502 results on '"Muhammad Israr"'
Search Results
2. Impact of coriander (Coriandrum sativum), garlic (Allium sativum), fenugreek (Trigonella foenum-graecum) on zootechnical performance, carcass quality, blood metabolites and nutrient digestibility in broilers chickens
- Author
-
Abdul Hafeez, Said Shahid Ali, Junaid Akhtar, Shabana Naz, Abdulwahed Fahad Alrefaei, Mohammed Fahad Albeshr, Muhammad Israr, and Rifat Ullah Khan
- Subjects
Digestibility ,broiler ,phytogenics ,nutrients digestability ,Growth ,alternative to antibiotics ,Veterinary medicine ,SF600-1100 - Abstract
AbstractThe study investigated the impact of incorporating a specific herbal blend comprising coriander, garlic, and fenugreek (CGF) at various levels on the zootechnical performance, blood metabolites and nutrient digestibility in broiler chickens. The 42-day experiment involved 360 broilers (Cobb 500), organized into four distinct treatment groups. The dietary interventions included a control group consisting of a basal diet and the same diet was supplemented with CGF at rates of 1, 2, and 3%. Broilers receiving a 1% phytogenic mixture exhibited significantly increased live weight and carcass weight. Moreover, the digestibility of crude protein and crude fat significantly improved in broilers supplemented with a 1% phytogenic mixture. On the other hand, the digestibility of calcium and phosphorus showed a notable increase in broilers fed with a 3% phytogenic mixture. Regarding serum metabolites, the 1% phytogenic mixture group displayed significantly higher levels of high density lipoprotein and triglycerides. The supplementation of the broiler diet with a herbal mixture of coriander, fenugreek, and garlic at a 1% rate resulted in improved growth performance, carcass quality, nutrient digestion, and lipid profile.
- Published
- 2024
- Full Text
- View/download PDF
3. Additive effect of Moringa oleifera leaf meal and pomegranate (Punica granatum) peel powder on productive performance, carcass attributes and histological morphology of ileum in Japanese quails
- Author
-
Saira Maqsood, Shabana Naz, Areesha Sikandar, Sajida Arooj, Abdulwahed Fahad Alrefaei, and Muhammad Israr
- Subjects
Moringa ,pomegranate ,organoleptic ,growth ,carcass ,sensory ,Veterinary medicine ,SF600-1100 - Abstract
ABSTRACTThe experiment aimed to evaluate the combined effects of supplementing Japanese quail diets with Moringa oleifera leaf meal (MOLM) and pomegranate peel powder (PPP) on growth, carcass quality and ileum histology. Four groups were formed: a control group, MOLM (0.2%), PPP (7.5%) and a combination of both (0.2% MOLM + 7.5% PPP). The control group exhibited the highest weight gain, followed by the MOLM group, with no significant differences in feed intake or conversion ratio. Carcass analysis showed significant differences in liver, heart and gizzard weights, with the mixed diet group having the highest values. However, wings and dressed weight percentages were unaffected by the treatments. Sensory evaluation revealed improved organoleptic properties in the mixed diet group. Histological examination demonstrated enhanced ileum morphology in the mixed diet group, with significant improvements in villi length and villus/crypt depth ratio. Overall, supplementation with 0.2% MOLM and 7.5% PPP positively impacted carcass quality, sensory attributes and bird health. These findings suggest the potential benefits of combining MOLM and PPP in quail diets to enhance growth and overall health, highlighting the importance of further research in poultry nutrition.
- Published
- 2024
- Full Text
- View/download PDF
4. Mapping annual soil loss in the southeast of Peshawar basin, Pakistan, using RUSLE model with geospatial approach
- Author
-
Abid Sarwar, Muhammad Ali, Muhammad Israr, Shazia Gulzar, Muhammad Ismail Khan, Muhammad Akmal Sardar Ali, Abdul Majid, and Shah Rukh
- Subjects
GIS ,remote sensing ,RUSLE ,soil loss ,weighted sum ,Ecology ,QH540-549.5 ,Geology ,QE1-996.5 - Abstract
Soil erodibility is challenging for agricultural soils, sustainable farming systems and water-food security in developing countries. Regional scale precise estimation of soil erosion is vital to save fertile soils. For this purpose, geospatial technology is the researchers’ top choice. The Revised Universal Soil Loss Equation (RUSLE) has the potential plausible estimates of soil erosion in the region. The study area comprises parts from two basins (Peshawar and Nizampur) having distinct land surface characteristics. This difference made the applicability of RUSLE model challenging. The influencing factors were combined using weighted sum in GIS. The study area was categorized into five soil erosion zones: very low (0–0.1 t ha−1 year−1), low (0.1–0.50 t ha−1 year−1), moderate (0.50–0.7 t ha−1 year−1) high (0.7–1 t ha−1 year−1), and very high (>1 t ha−1 year−1). The 1,748 km2 (174800 hectares) study region has an annual soil loss of 0.1 to > 1.0 t ha−1 year−1. The overall accuracy of the estimated soil erosion was found to be 90% with Kappa coefficient of 87.25% and receiver operating characteristics area under the curve (ROC-AUC) score of 0.819. This study’s will help to address the climate change-induced challenges of soil erosion in agricultural lands.
- Published
- 2024
- Full Text
- View/download PDF
5. Exploring the uncommon: Unusual instance of retained fractured needles in a patient of intravenous drugs abuse
- Author
-
Tejas Phaterpekar, Muhammad Israr Ahmad, Hugue Ouellete, Peter Munk, Paul Mallinson, Savvas Nicolaou, and Adnan Sheikh
- Subjects
IV Drug abuse complications ,Fracture needles ,Foreign bodies ,Recurrent infections ,Sepsis risk ,Medical physics. Medical radiology. Nuclear medicine ,R895-920 - Abstract
Retained needle fragments commonly serve as sources of recurrent infections with a potential to embolize to the heart and lungs and can lead to life-threatening consequences. Here, we report a case of a 46-year-old male with a history of intravenous drug user and chronic forearm wounds, presenting with sepsis. Several retained needles are identified on CT scan, several days postadmission. This case highlights the importance of timely assessment of infectious sources in patients with history of intravenous drug abuse.
- Published
- 2024
- Full Text
- View/download PDF
6. Unlocking plant defense: Exploring the nexus of biochar and Ca2+ signaling
- Author
-
Rubab Sarfraz, S.V.G.N. Priyadarshani, Ali Fakhar, Muhammad Israr Khan, Zohaib Ul Hassan, Pil JooKimae, and Gil WonKimabe
- Subjects
Biotic stress ,Calcium-binding protein ,Ion channels ,Cell wall barriers ,Exchangeable Ca2+ ,Omics approaches ,Plant ecology ,QK900-989 - Abstract
The interaction between biochar application and calcium ions (Ca2+) in plants, in terms of activating plant defense mechanism would be useful to improve plant resilience and sustainable agriculture. This review aims to highlight the possible connection between biochar-induced changes in soil physicochemical properties, microbial interactions, and Ca2+ dynamics, ultimately leading to promote the plant defense mechanisms. We are also interested to discuss the role of Ca2+ signaling in coordinating plant responses to various biotic and abiotic stresses such as pathogen and insects attacks, cold or heat stress and drought stress as well as how Ca2+ fluxes, calcium-binding proteins, and ion channels are influenced by biochar application in the soil environment. Furthermore, we examine the impact of biochar on plant Ca2+ signaling pathways and how it can prime defense genes and strengthen call wall barriers to improve plant immunity. Despite significant progress, there is a need for interdisciplinary collaboration to fully sort out the mechanism of Ca2+ signaling in plants and induction of Ca2+ ions by biochar induction in soil environment. Advanced imaging techniques, proteomics and omics approaches could be helpful to unlock the complex interaction between biochar application and Ca2+ signaling. Overall, this review contributes substantially to the literature by describing the relationship between biochar and Ca2+ signaling and providing insights into novel approaches for enhancing plant defense mechanisms and development of sustainable agricultural solutions.
- Published
- 2024
- Full Text
- View/download PDF
7. Effect of Azolla pinnata meal on growth, immunity, faecal E. coli, antioxidant capacity and gut histomorphology in Japanese quails
- Author
-
Abdul Hafeez, Darwish Khan, Shabana Naz, Rasha Alonaizan, Rasha K. Al-Akeel, Muhammad Israr, and Rifat Ullah Khan
- Subjects
Growth ,intestinal histology ,carcase ,MDA ,immunity ,faecal E. coli ,Veterinary medicine ,SF600-1100 - Abstract
ABSTRACTAmidst increasing concerns regarding the incorporation of non-traditional protein sources in poultry diets as replacements for protein sources vital for human consumption, such as soybean meal, the utilization of Azolla leaf meal has garnered significant attention and popularity. The experiment commenced with 192 Japanese quail chicks (one day old), originated from a single hatch. Each chick was individually weighed and then randomly assigned to one of four treatment groups, namely control, supplementation of Azolla at the rate of 20 g/kg (Azolla 20), 40 g/kg (Azolla 40), and 60 g/kg (Azolla 60). Weight gain, feed conversion ratio (FCR) and dressing percentage were significantly (P 0.05) difference was found in antibody titre against New Castle disease virus, maleanodialdehyde (MDA) and faecal E. coli excretion. Further, villus height, crypt depth and ratio between them improved significantly (P
- Published
- 2024
- Full Text
- View/download PDF
8. The association and interactions of malnutrition, micronutrients, and drug therapy in the management of tuberculosis
- Author
-
Muhammad Maaz, Muhammad T. Sultan, Stanley I.R. Okoduwa, Muhammad U. Khalid, Amna Asif, Mueeza Rafique, Muhammad Israr, and Muhammad Ahmad
- Subjects
Tuberculosis ,Malnutrition ,Micronutrient ,Immunity ,Drug therapy ,Hepatotoxicity ,Nutrition. Foods and food supply ,TX341-641 ,Food processing and manufacture ,TP368-456 - Abstract
Tuberculosis is an infectious lung disease that is the leading cause of death worldwide. Globally, over 3,500 people lose their lives to tuberculosis each day – totalling 1.3 million deaths each year. Mycobacterium tuberculosis is the acid-fast bacteria that causes tuberculosis. Fever, coughing, exhaustion, and weight loss are among the symptoms that patients with tuberculosis display. Tuberculosis is transmitted from person to person by inhaling airborne droplets. Immune compromised individuals are at high risk for developing tuberculosis. Direct microscopy of sputum smears and solid media cultures are used as tuberculosis diagnostic techniques. The global effort to combat tuberculosis has so far saved an estimated 75 million lives since 2000. The present review focuses on the association between malnutrition and tuberculosis, micronutrient status, and drugs used in tuberculosis therapy. The greatest risk factor for TB is malnutrition, which weakens immunity by lowering the cells' ability to fight off infections. Many micronutrients are useful in controlling tuberculosis and boosting the host's immunity. These include copper, zinc, selenium, iron, vitamin A, vitamin C, vitamin D, vitamin B6, and vitamin E. Furthermore, the longevity of patients in intensive care units (ICUs) depends on their micronutrient status. Several medications, such as isoniazid, ethambutol, rifabutin, levofloxacin, amikacin, streptomycin, and capreomycin, are used to treat tuberculosis for a certain period of time. Anti-tuberculosis medications can cause vitamin B6 deficiency, arthralgias, gastrointestinal issues, hepatotoxic effects, and allergic reactions as adverse effects. The United Nations Sustainable Development Goals (SDGs) aimed to end the global tuberculosis epidemic by 2023 but more work remains to be done.
- Published
- 2024
- Full Text
- View/download PDF
9. Impact of Baseline Characteristics on Stroke Outcomes in Pakistan: A Longitudinal Study Using the Modified Rankin Scale
- Author
-
Muhammad Shabbir, Abdurrahman M. Alshahrani, Dushad Ram, Ambreen Liaqat, Feras M. Almarshad, Abdulrahman Saad Alfaiz, Muath A. Alammar, Altaf Husain Banday, Muhammad Israr, and Muhammad Mohsin Sajjad
- Subjects
stroke ,pakistan ,modified rankin scale ,comorbidities ,long-term outcomes ,healthcare ,rehabilitation ,Medicine - Abstract
Introduction. Stroke is a leading cause of disability and mortality globally, with a significant impact on healthcare systems. Various factors, including age, gender, comorbidities, and the type of stroke, influence the burden of stroke and its outcomes. The study was conducted with an objective to determine the impact of baseline characteristics on the long-term functional outcome of stroke patients. Methods. This prospective observational study was conducted between April 6, 2022 - December 31, 2023, at a tertiary hospital. The study included patients with radiologically confirmed stroke, selected through convenience sampling. Stroke patients of any gender and all age groups, with any comorbidity, were included. The Modified Rankin Scale (mRS) assessed disability on admission and three months post-stroke. Results. Of the 213 patients, 122 (57.3%) were males and the majority, 199 (93.4%) individuals, had acute ischemic stroke. The median age of the participants was 60 years (range: 13-97 years; IQR=18 years). The mRS score on admission was poor (5.0; IQR=1.0) for patients ≥ 60 years. In 74 (34.74%) participants, the left middle cerebral artery was a frequently involved site. Age of ≥ 60 years (mRS=4.0; IQR=4.0; p=0.001) and the presence of ≥ 3 comorbidities (mRS=5.0; IQR=1.0; p=0.001) were significantly associated with poor outcomes three months post-stroke. Ordinal logistic regression revealed that a mRS score of 4 (OR=14.20; 95% CI=1.70-145.25; p=0.02) and a mRS score of 5 (OR=78.84; 95% CI=9.35-820.25; p < 0.001) on admission were associated with poor outcomes. In addition, the presence of ≥ 3 comorbidities (OR=4.59; 95% CI=14.65; p < 0.01) and increasing age (OR=1.04; 95% CI=1.01-1.07; p=0.02) were predictors of poor outcomes three months post-stroke. Conclusions. The study underscores the importance of early intervention and effective management of comorbidities to improve functional outcomes in stroke patients. It highlights the need for targeted stroke care and rehabilitation strategies.
- Published
- 2024
- Full Text
- View/download PDF
10. Cross-species immunoprotective antigens (subolesin, ferritin 2 and P0) provide protection against Rhipicephalus sanguineus sensu lato
- Author
-
Ismail Zeb, Luís Fernando Parizi, Muhammad Israr, Itabajara da Silva Vaz, and Abid Ali
- Subjects
Anti-tick vaccine ,Cross-protection ,Cocktail ,Rhipicephalus sanguineus sensu lato ,Infectious and parasitic diseases ,RC109-216 - Abstract
Abstract Background Tick control is mostly hampered by the rise of acaricide-resistant tick populations. Significant efforts have focused on developing alternative control methods, including cross-species protective and/or cocktail-based anti-tick vaccines, to achieve protection against various tick species. Methods In this study, full-length open reading frames encoding subolesin (SUB) from Rhipicephalus microplus and ferritin 2 (FER2) from Hyalomma anatolicum as well as the partial 60S acidic ribosomal protein (P0) from R. microplus were cloned, expressed in Escherichia coli and used as vaccine antigens against Rhipicephalus sanguineus sensu lato (R. sanguineus s.l.) infestation in rabbits. Results In silico analyses revealed that the SUB, P0 and FER2 proteins were antigenic and displayed limited similarity to the host's homologous proteins. The proteins shared identities of 97.5%, 100% and 89.5% with their SUB, P0 and FER2 R. sanguineus s.l. orthologous sequences, respectively. Antibodies against each recombinant protein cross-recognized the native proteins in the different tissues and developmental stages of R. sanguineus s.l. Overall efficacy of the SUB, FER2 and cocktail (SUB+FER2+P0) vaccines against R. sanguineus s.l. infestation was 86.3%, 95.9% and 90.9%, respectively. Conclusions Both mono-antigen and the cocktail anti-tick vaccines affected the biological parameters of R. sanguineus s.l. infestation in the rabbit model, which could be extrapolated to its infested host under natural conditions. These findings support the possibility of using mono-antigenic and cocktail-based vaccines for large-scale anti-tick vaccine development against multiple tick species. Graphical Abstract
- Published
- 2024
- Full Text
- View/download PDF
11. Synthesis of Plant-Mediated Iron Oxide Nanoparticles and Optimization of Chemically Modified Activated Carbon Adsorbents for Removal of As, Pb, and Cd Ions from Wastewater
- Author
-
Ali Rehman, Abdul Naeem, Ijaz Ahmad, Fozia Fozia, Mikhlid H. Almutairi, Madeeha Aslam, Muhammad Israr, Bader O. Almutairi, and Zia Ullah
- Subjects
Chemistry ,QD1-999 - Published
- 2023
- Full Text
- View/download PDF
12. Water resources and their management in Pakistan: A critical analysis on challenges and implications
- Author
-
Shakeel Ahmad, Haifeng Jia, Anam Ashraf, Dingkun Yin, Zhengxia Chen, Changqing Xu, Wang Chenyang, Qimeng Jia, Zhang Xiaoyue, Muhammad Israr, and Rasheed Ahmed
- Subjects
Water resources management ,Water scarcity ,Water governance ,Climate change ,Sustainable development ,Conceptual framework ,River, lake, and water-supply engineering (General) ,TC401-506 ,Water supply for domestic and industrial purposes ,TD201-500 ,Energy industries. Energy policy. Fuel trade ,HD9502-9502.5 - Abstract
Water is one of the essential natural resources for human beings. However, rising worldwide water demand and a significant decline in availability due to a lack of dynamic management and over-extraction have resulted in a complex scenario in terms of water availability. The current paper examines water resources and their management, methodologies, aims, and scope. Through the perspective of water resources and their management in Pakistan, 93 research publications were critically analyzed using a systematic review technique. The technique includes a systematic review of existing literature on water resource management, with particular emphasis on policy, governance, and environmental challenges. The study results demonstrate gaps and weaknesses in existing laws and regulations, alongside the threats to water resource management due to population expansion, urban development, climate change, and water contamination. To properly address these problems, the current study proposed a comprehensive framework for water resource management. This framework includes a national water policy that argues for sustainability and improves institutional strength. Infrastructure development, climate change adaptation, and examining social and environmental variables are all emphasized as important problems. Furthermore, it is essential to emphasize the importance of education and raising knowledge about water resource management among the general public and relevant stakeholders. By following these recommendations and the proposed OECD key principles on water governance, Pakistan may make significant progress towards achieving sustainable water management, aligning with its development objectives, and ensuring clean and safe water availability for future generations.
- Published
- 2023
- Full Text
- View/download PDF
13. Garlic (Allium sativum), fenugreek (Trigonella foenum-graecum) and coriander (Coriandrum sativum): performance, nutrient digestibility and blood metabolites in broilers
- Author
-
Abdul Hafeez, Said Shahid Ali, Junaid Akhtar, Shabana Naz, Ibrahim A. Alhidary, Muhammad Israr, and Rifat Ullah Khan
- Subjects
Broiler ,digestibility ,feed additives ,performance ,blood ,Veterinary medicine ,SF600-1100 - Abstract
The effects of the inclusion of a selected herbal mixture consisting of fenugreek, garlic and coriander (FGC) in different levels of growth performance, digestibility of nutrients and blood biochemicals in broiler chickens (Cobb 500) were studied in a 42-day experiment on 360 broilers, which were grouped into 4 treatments. The dietary treatments consisted of a basal diet (control) and the same diet with the addition of FGC at rates of 1%, 2%, and 3%. The results showed that the treatment groups exhibited a significantly lower feed intake (P
- Published
- 2023
- Full Text
- View/download PDF
14. Classification of normal and abnormal heart by classifying PCG signal using MFCC coefficients and CGP-ANN classifier
- Author
-
Muhammad Israr, Muhammad Zia, Naveed Ur Rehman, Imran Ullah, and Khushal Khan
- Subjects
Technology ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Science - Abstract
Globally, A leading cause of death is heart disease and a serious public health concern. The anomalies in heart sound appears before the heart disease symptoms. The sounds are type of auscultation, which is a process dealing with sounds in a body that generates due to mechanical vibrations of organs, Auscultation is a potential method in medical science to detect abnormalities in heart sounds and in case of suspicion The patient follows up with a referral for other evaluations, such as an electrocardiogram. In medical sciences early detection of symptoms are of major importance, this research work is a good step toward the detection of abnormalities in heart before symptom appearing by processing the phonocardiogram (PCG) signal. In this paper PCG signals are classified by utilizing the features of Mel frequency cepstral coefficients (MFCC) through Cartesian Genetic Programming - Artificial Network (CGP-ANN) Classifier. The diagnostic accuracy of proposed methodology is found 99.50% which is more than other classifiers like Support Vector Machine (SVM) and Convolutional Neural Network (CNN). The accuracy of model as compared to other models can prove the performance superiority of the proposed system.
- Published
- 2023
- Full Text
- View/download PDF
15. Clinical Insights: Prevalence of β-Thalassemia Mutations (IVSI-5, FSC8/9, and CD41/42) in the Swat District
- Author
-
Sumaia Saif, Shah Lila, Gulalai Ghani, Murad Ali Rahat, Akhtar Rasool, and Muhammad Israr
- Subjects
Medicine ,Biology (General) ,QH301-705.5 - Abstract
Background: Thalassemia is a prevalent condition characterized by decreased production or absence of hemoglobin globin chains. There are 2 types of thalassemia, alpha thalassemia and beta thalassemia (β-thalassemia), classified according to defects in the alpha or beta protein chain. β-Thalassemia results from a diverse range of mutations in the β subunit of the hemoglobin gene (HBB). This results in severe reductions in erythrocyte and hemoglobin levels. Worldwide, more than 40,000 babies are born with β-thalassemia annually. There are approximately 80 million β-thalassemia carriers. In Pakistan, the annual birth rate of β-thalassemia major carriers is approximately 6,000, and 50,000 to 100,000 patients suffer from this common inherited disorder. IVSI-1, IVSI-5 (G>C), Fr 8/9 (+G), Fr 41/42 (-TTCT), and del 619 are the 5 most common mutations that account for 90% of β-thalassemia cases in Pakistan. This study aimed to investigate the prevalence of β-thalassemia mutations (IVSI-5, Fr 41/42, and Fr 8/9) in the Swat district and to analyze the blood morphology of different mutant thalassemia blood samples. Methods: A cross-sectional study was performed at the Forensic Research Lab University of Swat from December 2021 to March 2022. The study included a total of 150 blood samples. Comparative analysis of blood morphology through microscopy was carried out on samples from patients with different β-thalassemia mutations and normal individuals. Genomic DNA extraction was performed according to the Sambrook protocol, and DNA was quantified via agarose gel electrophoresis. Thalassemia mutations were detected by amplification refractory mutation system (ARMS)-polymerase chain reaction (PCR). The frequencies of different β-thalassemia mutations were analyzed. Results: Thalassemia blood cells were more hypochromic and microcytic than normal blood cells, although no differences were detected in the morphology of IVSI-5, Fr 8/9, or CD41/42 mutant blood cells. The IVSI-5, Fr 8/9, and CD41/42 mutations were analyzed through agarose gel electrophoresis of the ARMS-PCR data. The IVSI-5 mutation was the most prevalent mutation, identified in 52.2% (78/150) of the patients. The prevalence of Fr 8/9 and CD41/42 mutations was 22.6% (34/150) and 18.6% (28/150), respectively. A total of 5.33% (8/150) of patients had double mutations, and only 1 patient (0.666%) had all 3 mutations. Conclusion: This study provides a reliable reference for the detection of different mutations in β-thalassemia and will help to formulate different strategies for improving the awareness of the general public. For a more thorough analysis of common β-thalassemia mutations, the investigation should be extended to more ethnic regions of Pakistan.
- Published
- 2024
- Full Text
- View/download PDF
16. Initial Risk Assessment To Find Risky Slopes
- Author
-
Muhammad Israr Khan and Shuhong Wang
- Subjects
dynamics ,rocks/rock mechanics ,slopes-stabilization ,numerical methods ,dams ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Chemical engineering ,TP155-156 ,Physics ,QC1-999 - Abstract
Identification of potential landslides and evaluation of landside risk during impounding and operation are deemed necessary to ensure the safety of the project operations. The scope of the current studies for the accomplishment of the aforementioned purposes is to review of published materials, interpretation of satellite images and topographic maps, site reconnaissance and preparation of geological map and preliminary assessment of hazard and risk of identified landslides. The interpretations presented herein are based on study of satellite (Quick Bird Google TM Earth) images, Survey of Pakistan (SOP) sheets, previously published geological maps and reports pertaining to the project area followed by ground verification in the field. This paper presents a preliminary assessment of the reservoir slopes, briefly discussing physiography, geology, potential and active reservoir landslides and a preliminary landslides risk assessment. The conclusions and recommendations provided at the end of this report summarises the studies conducted, potential and active landslides, their subsequent risk assessment and further need of detailed studies.
- Published
- 2023
- Full Text
- View/download PDF
17. A Novel GIS-SWMM-ABM Approach for Flood Risk Assessment in Data-Scarce Urban Drainage Systems
- Author
-
Shakeel Ahmad, Haifeng Jia, Anam Ashraf, Dingkun Yin, Zhengxia Chen, Rasheed Ahmed, and Muhammad Israr
- Subjects
urban flooding ,climate change ,low-impact development (LID) ,storm water management model (SWMM) ,log-Pearson type III (LPT-III) ,alternating block method (ABM) ,Hydraulic engineering ,TC1-978 ,Water supply for domestic and industrial purposes ,TD201-500 - Abstract
Urbanization and climate change pose a critical challenge to stormwater management, particularly in rapidly developing cities. These cities experience increasingly impervious surfaces and more intense rainfall events. This study investigates the effectiveness of the existing drainage system in Lahore, Pakistan, a megacity challenged by rapid urbanization and the impacts of climate change. To address the lack of predefined storm patterns and limited historical rainfall records, we employed a well-established yet adaptable methodology. This methodology utilizes the log-Pearson type III (LPT-III) distribution and alternating block method (ABM) to create design hyetographs for various return periods. This study applied the stormwater management model (SWMM) to a representative community of 2.71 km2 to assess its drainage system capacity. Additionally, geographic information systems (GISs) were used for spatial analysis of flood risk mapping to identify flood-prone zones. The results indicate that the current drainage system, designed for a 2-year return period, is inadequate. For example, a 2-year storm produced a total flood volume of 0.07 million gallons, inundating approximately 60% of the study area. This study identified flood risk zones and highlighted the limitations of the system in handling future, more intense rainfall events. This study emphasizes the urgent need for infrastructure improvements to handle increased runoff volumes such as the integration of low-impact development practices. These nature-based solutions enhance infiltration, reduce runoff, and improve water quality, offering a sustainable approach to mitigating flood risks. Importantly, this study demonstrates that integrating LPT-III and ABM provides a robust and adaptable methodology for flood risk assessment. This approach is particularly effective in developing countries where data scarcity and diverse rainfall patterns may hinder traditional storm modeling techniques. Our findings reveal that the current drainage system is overwhelmed, with a 2-year storm exceeding its capacity resulting in extensive flooding, affecting over half of the area. The application of LPT-III and ABM improved the flood risk assessment by enabling the creation of more realistic design hyetographs for data-scarce regions, leading to more accurate identification of flood-prone areas.
- Published
- 2024
- Full Text
- View/download PDF
18. Correlations between factor of safety with distributed load and crest length – Zariwam landslide as case study
- Author
-
Muhammad Israr Khan
- Subjects
Slope stability ,factor of safety ,numerical modelling ,surcharge load ,correlations ,Ecology ,QH540-549.5 ,Geology ,QE1-996.5 - Abstract
ABSTRACTThis paper examines the impact on Factor of Safety (FS) value due to the variation in distributed load (LD), Crest length (CL), shear strength (τ), and shear stress (σ) both in seismic and non-seismic conditions. The main purpose of this paper is to develop correlations between these parameters, which can be used in any slope stability analysis design project. Forty number of analyses are performed by considering different soil material properties. Slope stability analysis is performed using Slide software and correlations are developed using Statistical Package for Social Sciences (SPSS) software as well as with the help of Microsoft Excel. The analysis results indicate that the seismic slope stability analysis gives optimum value for slope FS and therefore it is highly recommended to perform and give preference to seismic slope stability analysis of any soil slope to compute and recommend FS value. The main novelty of this paper are the eight new correlations. These correlations can be used in slope stability projects like earthfill dams design, embankments, or any slope design project or case study to know about the slope factor of safety in detail.
- Published
- 2023
- Full Text
- View/download PDF
19. Population genetic analyses inferred a limited genetic diversity across the pvama-1 DI domain among Plasmodium vivax isolates from Khyber Pakhtunkhwa regions of Pakistan
- Author
-
Ibrar Ullah, Sahib Gul Afridi, Muhammad Israr, Hizbullah Khan, Sulaiman Shams, Komal Zaib, Huong Giang Le, Jung-Mi Kang, Byoung-Kuk Na, and Asifullah Khan
- Subjects
Plasmodium vivax ,Apical membrane antigen-1 ,Genetic diversity ,Khyber Pakhtunkhwa ,Pakistan ,Infectious and parasitic diseases ,RC109-216 - Abstract
Abstract Background Plasmodium vivax apical membrane antigen-1 (pvama-1) is an important vaccine candidate against Malaria. The genetic composition assessment of pvama-1 from wide-range geography is vital to plan the antigen based vaccine designing against Malaria. Methods The blood samples were collected from 84 P. vivax positive malaria patients from different districts of Khyber Pakhtunkhwa (KP) province of Pakistan. The highly polymorphic and immunogenic domain-I (DI) region of pvama-1 was PCR amplified and DNA sequenced. The QC based sequences raw data filtration was done using DNASTAR package. The downstream population genetic analyses were performed using MEGA4, DnaSP, Arlequin v3.5 and Network.5 resources. Results The analyses unveiled total 57 haplotypes of pvama-1 (DI) in KP samples with majorly prevalent H-14 and H-5 haplotypes. Pairwise comparative population genetics analyses identified limited to moderate genetic distinctions among the samples collected from different districts of KP, Pakistan. In context of worldwide available data, the KP samples depicted major genetic differentiation against the Korean samples with Fst = 0.40915 (P-value = 0.0001), while least distinction was observed against Indian and Iranian samples. The statistically significant negative values of Fu and Li’s D* and F* tests indicate the evidence of population expansion and directional positive selection signature. The slow LD decay across the nucleotide distance in KP isolates indicates low nucleotide diversity. In context of reference pvama-1 sequence, the KP samples were identified to have 09 novel non-synonymous single nucleotide polymorphisms (nsSNPs), including several trimorphic and tetramorphic substitutions. Few of these nsSNPs are mapped within the B-cell predicted epitopic motifs of the pvama-1, and possibly modulate the immune response mechanism. Conclusion Low genetic differentiation was observed across the pvama-1 DI among the P. vivax isolates acquired from widespread regions of KP province of Pakistan. The information may implicate in future vaccine designing strategies based on antigenic features of pvama-1.
- Published
- 2022
- Full Text
- View/download PDF
20. Evaluation of Biochar and Inorganic Fertilizer on Soil Available Phosphorus and Bacterial Community Dynamics in Acidic Paddy Soils for Different Incubation Temperatures
- Author
-
Rubab Sarfraz, Faisal Nadeem, Wenhao Yang, Muhammad Tayyab, Muhammad Israr Khan, Rashid Mahmood, Xingjie Guo, Shihe Xing, and Gil Won Kim
- Subjects
paddy soil ,PLS-DA ,MANOVA ,Illumina sequencing ,correlation ,Agriculture - Abstract
The composition of microbial communities and the functioning of ecosystems are greatly influenced by the nutrient inputs. Despite this fact, our knowledge regarding the impact of phosphorus (P) inputs on soil P availability and microbial community structures in subtropical acidic soils remains limited. We hypothesized that diverse P inputs, incubation temperatures, and soil types could significantly alter soil P availability and microbial communities. To address this gap, we conducted a laboratory incubation experiment, investigating the effects of biochar and inorganic P amendments on soil available P, soil pH, acid phosphatase enzymes, and bacterial abundance. We employed two different incubation temperatures (15 °C and 25 °C) using acidic paddy soil and red soil from the subtropical Southern China region. Our results indicate a notable increase in soil pH, reaching 37% and 39% at 15 °C and 40% and 40.6% at 25 °C, respectively, following the application of biochar and inorganic P amendments in paddy soil. In the case of red soil, we observed pH increases of 41% and 43% at 15 °C and 44% and 45% at 25 °C after the application of biochar and inorganic P amendment, respectively. The addition of inorganic P amendment resulted in the highest available P contents in paddy soil, reaching 111.47 mg/kg at 15 °C and 100.17 mg/kg at 25 °C, respectively. However, Proteobacteria decreased after inorganic P addition, which showed that P might not be the only limiting nutrient for various bacterial communities. Bacterial diversity and richness indices were found to be higher after biochar application in both soils. Gemmatimonadetes, Acidobacteria, and Actinobacteria were found to be strongly influenced by incubation temperatures, whereas most of the top abundant bacterial phyla, such as Gemmatimonadetes, Actinobacteria, Chloroflexi, Acidobacteria, Planctomycetes, Firmicutes, Patescibacteria, and Bacteroidetes, were highly dependent on soil type. At the genus level, various important P solubilizing genera (Pseudomonas, Bradyrhizobium, Streptomyces jietaisiensis, Massilia) significantly increased after biochar and inorganic P addition in both soils. The correlation analysis proved that P-solubilizing genera were significantly associated with changes in soil pH, as well as soil available P after biochar and inorganic P addition. Conclusively, in a short-term incubation experiment, inorganic P amendment greatly increased the soil pH and available phosphorus contents compared to biochar and control treatments; however, the microbial community was observed to be strongly associated with biochar application, soil type, and incubation temperature.
- Published
- 2023
- Full Text
- View/download PDF
21. Dynamic Deformation Analysis Of The Upstream And Downstream Slope Of The Rockfill Nauseri Dam
- Author
-
Muhammad Israr Khan and ShuhongWang
- Subjects
rocks ,slopes ,displacements ,numerical modelling ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Chemical engineering ,TP155-156 ,Physics ,QC1-999 - Abstract
A detailed study on dynamic deformation analysis of the upstream and downstream slope of the rockfill dam at the Nauseri Dam site is performed to address dynamic stability of the slope under the Operating Basis Earthquake (OBE), 475-year and Maximum Credible Earthquake (MCE). The dynamic deformation analysis in this computation package includes Newmark deformation analysis, Makdisiseed deformation analysis and BrayTravasarou deviatoric slope displacement analysis. The site response analysis is carried out using GeoStudio 2012 QUAKE/W to predict motions propagating through slopes from the underlying bedrock. In this study, the deterministic methods developed by Newmark and Makdisi-Seed and the probabilistic method proposed by Bray and Travasarou were used to evaluate the dynamic deformation of the upstream and downstream slope of the rockfill dam. It is concluded that the estimated displacements of the upstream and downstream slope by two deterministic methods, such as Newmark and Makdisi-Seed while one probabilistic method that is Bray and Travasarou used are consistent and give better results compare to other methods.
- Published
- 2022
- Full Text
- View/download PDF
22. DENGUE FEVER OUTBREAK IN TWIN CITIES; A TERTIARY CARE CENTER EXPERIENCE
- Author
-
Taimoor Ashraf Khan, Shazia Nisar, Muhammad Mahad Qureshi, Muhammad Samiullah, and Muhammad Israr
- Subjects
alanine aminotransferase ,alkaline phosphatase ,dengue fever ,dengue hemorrhagic fever ,liver enzymes ,Medicine ,Medicine (General) ,R5-920 - Abstract
Objective: To characterize the clinical presentations and laboratory markers (as disease predictors and markers) and severity of disease in patients admitted with dengue fever. Study Design: Prospective observational study. Place and Duration of Study: Department of Infectious Diseases, Pak Emirates Military Hospital Rawalpindi, from May to Oct 2018 Methodology: In our study, we included the patients treated for dengue fever. Data were recorded on predesigned proforma and analyzed using Microsoft excel 365 and Social Package for Statistical Sciences version 23. Results: A total of 160 patients were included in this study, all were males. All cases were positive for Nonstructural Protein 1 Antigen. Symptoms seen in abundance were fever with rigors, chills, backache, retro-orbital pain, nausea and vomiting. Manual platelet count at admission ranged from 15-396 x 103 (mean 107.5 ± 6.8 x 103). Platelet count on discharge ranged from 102-577 x 103 (mean 207.9 ± 95.4 x 103). A total of 34 (21.25%) patients out of 160 confirmed and admitted dengue fever cases had Dengue Hemorrhagic Fever (Nonstructural Protein 1 Antigen positive, thrombocytopenia and leukopenia) and 2 patient went into dengue shock syndrome. The derangement in alanine aminotransferase and alkaline phosphatase levels were shown in 98 (61.2%) and 62 (31.2%) of patients. All these patients were immunoglobulin M and Nonstructural Protein 1 Antigen positive. Conclusion: Raised serum alanine aminotransferase and alkaline phosphatase levels along with early positive Nonstructural Protein 1 Antigen is a marker of disease severity.
- Published
- 2021
23. Phenotypic Classification of Eye Colour and Developmental Validation of the Irisplex System on Population Living in Malakand Division, Pakistan
- Author
-
Murad Ali Rahat, Fazal Akbar, Akhtar Rasool, Muhammad Ilyas, Allah Rakha, Sulaiman Shams, Musharraf Jelani, Fehmida Bibi, Bader H. Shirah, Angham Abdulrhman Abdulkareem, Muhammad Imran Naseer, and Muhammad Israr
- Subjects
eye colour ,Irisplex ,genotypes ,Pakhtoon population ,Malakand Division ,Biology (General) ,QH301-705.5 - Abstract
The core objective of forensic DNA typing is developing DNA profiles from biological evidence for personal identification. The present study was designed to check the validation of the IrisPlex system and the Prevalence of eye colour in the Pakhtoon population residing within the Malakand Division. Methods: Eye colour digital photographs and buccal swab samples of 893 individuals of different age groups were collected. Multiplexed SNaPshot single base extension chemistry was used, and the genotypic results were analysed. Snapshot data were used for eye colour prediction through the IrisPlex and FROG-kb tool. Results: The results of the present study found brown eye colour to be the most prevalent eye colour in comparison to intermediate and blue coloured. Overall, individuals with brown-coloured eyes possess CT (46.84%) and TT (53.16%) genotypes. Blue eye-coloured individuals are solely of the CC genotype, while individuals of intermediate eye colour carry CT (45.15%) and CC (53.85%) genotypes in rs12913832 SNP in the HERC2 gene. It was also revealed that brown-coloured eyes individuals were dominant among all age groups followed by intermediate and blue. Statistical analysis between particular variables and eye colour showed a significant p-value (SLC45A2 gene, rs12913832 SNP in HERC2 gene, rs1393350 SNP in SLC45A2, districts and gender. The rest of the SNPs were non-significant with eye colour, respectively. The rs12896399 SNP and SNP rs1800407 were found significant with rs16891982 SNP. The result also demonstrated that the study group differs from the world population based on eye colour. The two eye colour prediction results were compared, and it was discovered that IrisPlex and FROG-Kb had similar higher prediction ratios for Brown and Blue eye colour. Conclusions: The results of the current study revealed brown eye colour to be the most prevalent amongst members of the local population of Pakhtoon ethnicity in the Malakand Division of northern Pakistan. A set of contemporary human DNA samples with known phenotypes are used in this research to evaluate the custom panel’s prediction accuracy. With the aid of this forensic test, DNA typing can be supplemented with details about the appearance of the person from whom the sample was taken in cases involving missing persons, ancient human remains, and trace samples. This study may be helpful for future population genetics and forensics studies.
- Published
- 2023
- Full Text
- View/download PDF
24. Biological Characterization of Polystichum lonchitis L. for Phytochemical and Pharmacological Activities in Swiss Albino Mice Model
- Author
-
Jan Sher, Gul Jan, Muhammad Israr, Muhammad Irfan, Nighat Yousuf, Fazal Ullah, Abdur Rauf, Abdulrahman Alshammari, and Metab Alharbi
- Subjects
analgesic ,anti-inflammatory ,antipyretic ,antispasmodic ,antioxidant ,phytochemistry ,Botany ,QK1-989 - Abstract
Polystichum lonchitis L. is a fern belonging to the family Dryopteridaceae. The present study was conducted to evaluate its pharmacological, antioxidant, and phytochemical properties, and to conduct GC–MS screening of P. lonchitis. The acetic acid-induced writhing test, yeast-induced hyperpyrexia method, carrageenan-induced rat paw edema model, and charcoal meal test model were carried out to assess analgesic, antipyretic, anti-inflammatory, and antispasmodic activity, respectively. DPPH was used as an antioxidant, while the phytochemical screening was conducted using standard scientific methods. Among the pharmacological activities, the most significant effects were observed in the analgesic and anti-inflammatory activities, followed by the antipyretic and antispasmodic activities, at a dose of 450 mg/kg after the 4th hour, compared with 150 mg/kg and 300 mg/kg. For the evaluation of antioxidant activities, the most significant results were detected in the methanolic and aqueous extracts. The detection of flavonoids and phenol occurred most significantly in the methanolic extract, and then in the ethanolic and aqueous extracts. The main compounds detected using GC–MS analysis with a high metabolic rate was 𝛼-D-Galactopyranoside, which had a metabolic rate of 0.851, and methyl and n-hexadecanoic, which had a metabolic rate of 0.972. Overall, the results suggested that P. lonchitis had a strong potential for pharmacological activities. The suggested assessment provided a way to isolate the bioactive constituents and will help to provide new medicines with fewer side effects. Due to the fern’s effectiveness against various diseases, the results provide clear evidence that they also have the potential to cure various diseases.
- Published
- 2023
- Full Text
- View/download PDF
25. Evaluation of the anti-diarrheal effects of the whole plant extracts of Cuscuta reflexa Roxb in pigeons
- Author
-
Naveed Muhammad, Sana Ullah, Abdur Rauf, Muhammad Atif, Seema Patel, Muhammad Israr, Sajid Akbar, Omer Shehzad, Muhammad Saeed, Saud Bawazeer, Md. Sahab Uddin, Marina Derkho, Mohammad Ali Shariati, and Mohammad S. Mubarak
- Subjects
Cuscuta reflexa ,Antidiarrheal ,Charcoal ,castor oil ,Magnesium sulfate ,Toxicology. Poisons ,RA1190-1270 - Abstract
Background: Cuscuta reflexa (dodder) belonging to the family Convolvulaceae has many ethno-medicinal uses such as antidiarrheal and antiemetic. This plant has been employed to treat diarrhea, where the antidiarrheal use of this plant is well established in different communities around the world without scientific bases. In addition, the antibacterial, anthelmintic, anticholinergic, and antihistaminic effects of this parasitic vine are partly responsible for the folkloric antidiarrheal use of this plant. In the present study, the antidiarrheal activity of C. reflexa was evaluated in pigeons (Columba livia) using the juice (JCR), aqueous (CRAE), and methanol (CRME) extracts. Methods: The antidiarrheal effect of C. reflexa was evaluated using different reported research models, with few modifications. In pigeons, diarrhea was induced by administration of castor oil (6 mL/kg, PO), ampicillin (250 mg/kg, IP), magnesium sulfate (2 gm/kg, PO), and cisplatin (6 mg/kg, IV). In these experiments, loperamide (2 mg/kg, IM) was used as a positive control, whereas JCR (1 mL/kg (1%) and 1 mL/kg (2%), CRAE (50, 100 and 200 mg/kg) and CRME (50, 100 and 200 mg/kg) were administered intramuscularly at different doses into each pigeon in the test groups. Results: In addition to cisplatin-induced diarrhea, all paradigms tested gave significant results (P < 0.01). The JCR, at different doses, exhibited a significant (p < 0.01) a dose-dependent antidiarrheal effect on both the frequency and the onset of diarrhea. Similarly, CRAE and CRME, at doses of 100 and 200 mg/kg, showed considerable (p < 0.001) inhibition against the onset and frequency of diarrhea. On the other hand, JCR, CRAE, and CRME exerted significant effects (p < 0.001) on the percentage inhibition (PI) of diarrhea and gastrointestinal charcoal transit in a dose-dependent manner. In this respect, the maximum PI (p < 0.01) of JCR, CRAE, and CRME in different experimental paradigms was 43.13, 49.14, and 55.99 %, respectively. Conclusions: Taken all together, results from this study reveal that the juice, aqueous, and methanol extract of C. reflexa exhibit significant anti-motility and anti-secretory potential. These findings may explain the medicinal use of C. reflexa in folk medicine as an antidiarrheal medicinal plant.
- Published
- 2021
- Full Text
- View/download PDF
26. SEISMIC ANALYSIS OF A SOIL SLOPE TO DEVELOP CORRELATIONS FOR FACTOR OF SAFETY CONSIDERING HORIZONTAL AND VERTICAL SEISMIC COEFFICIENTS
- Author
-
Muhammad Israr Khan and Shuhong Wang
- Subjects
factor of safety ,seismic analysis ,correlations ,slope stability ,seismic coefficients. ,Engineering (General). Civil engineering (General) ,TA1-2040 - Abstract
Seismic analysis of soil slopes is required to get safe value for slope design. Especially in earthquake zones. Normally a variation in factor of safety values is observed in normal analysis of a slope where seismic coefficients are kept zero as compare to seismic analysis where seismic coefficients are considered in the analysis. In this research, seismic horizontal coefficients are used to find the factors of safety. Correlations are developed between factor of safety values and seismic coefficients. The correlation can be used to find the factor of safety in any slope stability project for a homogenous slope. The outcome of this work are the correlations. These correlations can be used to find the factor of safety values considering horizontal seismic coefficient, vertical seismic coefficient and both.
- Published
- 2020
- Full Text
- View/download PDF
27. ANALYSIS OF EARTH FILL HYDRAULIC DAM WITH VARYING CREST LENGTH AND PERMEABILITY TO DEVELOP CORRELATIONS
- Author
-
Muhammad Israr Khan, Shuhong Wang, and Zhangze
- Subjects
slope stability analysis ,crest length ,correlations ,factor of safety ,seepage ,Engineering (General). Civil engineering (General) ,TA1-2040 - Abstract
In this paper, an earthen dam is analysed using different soil layers having different soil properties and dimensions. Normally a slope fail when the shear strength reduces from the minimum required value which keeps it stable. Internal erosion is the main cause which causes a dam to fail and it is mainly due seepage with time. A detail analysis of a predefined dam slope is performed in different layers to check the seepage variation as well as the factor of safety. Different soil layers and properties were used such that it is investigated from a fail condition to a complete stable condition. Limit equilibrium and finite element approaches are used. Correlations for factor of safety between these two approaches are also developed. These correlations and results could be used as guidelines in any dam or slope safety calculation.
- Published
- 2020
- Full Text
- View/download PDF
28. Bending mechanics model and value of transverse joints in precast prestressed utility tunnel
- Author
-
Pengyu Wang, Shuhong Wang, Muhammad Israr Khan, and Chengjin Zhu
- Subjects
precast prestressed utility tunnel ,transverse joint ,high-strength bolts ,bending mechanical model ,Architecture ,NA1-9428 ,Building construction ,TH1-9745 - Abstract
Joints lead to the uneven distribution of structural rigidity of a precast prestressed utility tunnel (PPUT) and changes in internal forces and deformation. From research perspective, bending stiffness is important as an important indicator to evaluate the performance of PPUT joints and an important factor to evaluate the overall mechanical properties of PPUT structures. After considering the actual structural form of a transverse joint section and the characteristics of force deformation, a mechanical model that can characterize the joint section from force to failure and the corresponding analytical expressions were established using the internal force balance and deformation coordination conditions. A sensitivity analysis of the factors affecting the bending stiffness of joints was carried out using numerical simulation methods. The theoretical calculation results were compared with the numerical simulation results. Finally, according to the obtained trend of bending stiffness change, a two-stage bending stiffness method is proposed for the transverse joints of PPUT. The results of the study provide a reference for the design and theoretical analysis of PPUT.
- Published
- 2020
- Full Text
- View/download PDF
29. Bifurcation analysis and chaos control in discrete-time modified Leslie–Gower prey harvesting model
- Author
-
Muhammad Bilal Ajaz, Umer Saeed, Qamar Din, Irfan Ali, and Muhammad Israr Siddiqui
- Subjects
Modified Leslie–Gower model ,Stability analysis ,Period-doubling bifurcation ,Neimark–Sacker bifurcation ,Chaos control ,Mathematics ,QA1-939 - Abstract
Abstract We investigate the dynamical behavior of a modified Leslie–Gower prey–predator model with harvesting in prey population. In order to explore rich dynamics of the model, Euler approximation is implemented to obtain a discrete-time modified Leslie–Gower model. Existence of equilibria and their local asymptotic stabilities are carried out. Furthermore, with the help of bifurcation theory and center manifold theorem, existence and directions of period-doubling and Neimark–Sacker bifurcations are investigated at positive steady-state. In order to control chaos and bifurcations, the Ott–Grebogi–Yorke (OGY) method and the hybrid control strategy are introduced. Numerical simulations are also provided to illustrate the theoretical discussions.
- Published
- 2020
- Full Text
- View/download PDF
30. Synthesis of difluoromethylated allenes through trifunctionalization of 1,3-enynes
- Author
-
Munira Taj Muhammad, Yihang Jiao, Changqing Ye, Mong-Feng Chiou, Muhammad Israr, Xiaotao Zhu, Yajun Li, Zhenhai Wen, Armido Studer, and Hongli Bao
- Subjects
Science - Abstract
Fluorinated or fluoroalkylated allenes are versatile building blocks for medicinal and material chemistry. Here, the authors show a regioselective trifunctionalization of 1,3-enynes proceeding through double C-F bond formation and concomitant installation of a -NSO2Ph group to the allene moiety.
- Published
- 2020
- Full Text
- View/download PDF
31. Genomic miscellany and allelic frequencies of Plasmodium falciparum msp-1, msp-2 and glurp in parasite isolates
- Author
-
Ibrar Ullah, Asifullah Khan, Muhammad Israr, Mohibullah Shah, Sulaiman Shams, Waliullah Khan, Muzafar Shah, Muhammad Siraj, Kehkashan Akbar, Tahira Naz, and Sahib Gul Afridi
- Subjects
Medicine ,Science - Abstract
Introduction The genomic miscellany of malaria parasites can help inform the intensity of malaria transmission and identify potential deficiencies in malaria control programs. This study was aimed at investigating the genomic miscellany, allele frequencies, and MOI of P. falciparum infection. Methods A total of 85 P. falciparum confirmed isolates out of 100 were included in this study that were collected from P. falciparum patients aged 4 months to 60 years in nine districts of Khyber Pakhtunkhwa Province. Parasite DNA was extracted from 200µL whole blood samples using the Qiagen DNA extraction kit following the manufacturer’s instructions. The polymorphic regions of msp-1, msp-2 and glurp loci were genotyped using nested PCR followed by gel electrophoresis for amplified fragments identification and subsequent data analysis. Results Out of 85 P. falciparum infections detected, 30 were msp-1 and 32 were msp-2 alleles specific. Successful amplification occurred in 88.23% (75/85) isolates for msp-1, 78.9% (67/85) for msp-2 and 70% (60/85) for glurp gene. In msp-1, the K1 allelic family was predominantly prevalent as 66.66% (50/75), followed by RO33 and MAD20. The frequency of samples with single infection having only K1, MAD20 and RO33 were 21.34% (16/75), 8% (6/75), and 10.67% (8/75), respectively. In msp-2, both the FC27 and 3D7 allelic families revealed almost the same frequencies as 70.14% (47/67) and 67.16% (45/67), respectively. Nine glurp RII region alleles were identified in 60 isolates. The overall mean multiplicity of infection for msp genes was 1.6 with 1.8 for msp-1 and 1.4 for msp-2, while for glurp the MOI was 1.03. There was no significant association between multiplicity of infection and age groups (Spearman’s rank coefficient = 0.050; P = 0.6) while MOI and parasite density correlated for only msp-2 allelic marker. Conclusions The study showed high genetic diversity and allelic frequency with multiple clones of msp-1, msp-2 and glurp in P. falciparum isolates in Khyber Pakhtunkhwa, Pakistan. In the present study the genotype data may provide valuable information essential for monitoring the impact of malaria eradication efforts in this region.
- Published
- 2022
32. Engineering of phenylalanine dehydrogenase from Thermoactinomyces intermedius for the production of a novel homoglutamate.
- Author
-
Muhammad Tariq, Muhammad Israr, Muslim Raza, Bashir Ahmad, Azizullah Azizullah, Shafiq Ur Rehman, Muhammad Faheem, Xinxiao Sun, and Qipeng Yuan
- Subjects
Medicine ,Science - Abstract
The dramatic increase in healthcare costs has become a significant burden to this era. Many patients are unable to access medication because of the high price of drugs. Genetic engineering has made advances to increase the yield, titer, and productivity in the bio-based production of chemicals, materials of interest, and identification of innovative targets for drug discovery. Currently, the production of homoglutamate (α-Aminoadipic acid) involves petrochemical routes that are costly with low yield and often not suitable for industrial production. Here, we established the development of NADH-dependent homoglutamate by engineering NADH-dependent phenylalanine dehydrogenase (PDH) from Thermoactinomyces intermedius, which provides a novel tool for in-vivo metabolic engineering and in-vitro catalysis. Based on computational insight into the structure, we proposed the site-specific directed mutagenesis of the two important residues of PDH through docking simulations by AutoDock Vina which elucidated the binding mode of PDH with α-Ketoadipic acid and ligands. Our results demonstrated that the catalytic efficiency Km/Kcat of the final mutant Ala135Arg showed a 3-fold increase amination activity towards the ketoadipic acid as compared to the other mutant Gly114Arg, a double mutant Gly114Arg/Ala135Arg, and wild type TiPDH. Furthermore, we have introduced formate dehydrogenase as a cofactor regenerative system in this study which further made this study economically viable. Our study unfolds the possibility of biosynthesis of other non-proteinogenic amino acids that might be valuable pharmaceutical intermediaries.
- Published
- 2022
- Full Text
- View/download PDF
33. In vitro antifungal potential of surfactin isolated from rhizospheric Bacillus thuringiensis Berliner 1915 against maize (Zea mays L.) fungal phytopathogen Fusarium graminearum Schwabe
- Author
-
Muddasir KHAN, Muhammad SALMAN, Syed Hussain SHAH, and Muhammad ISRAR
- Subjects
surfactin ,Bacillus ,biological control ,HPLC ,Fusarium graminearum ,Agriculture - Abstract
Fusarium graminearum fungus cause significant loss in maize (Zea mays L.) and other cereal crops all over the world. The usage of chemical agents cause severe environmental problems. Bacillus species and other plant growth-promoting bacteria (PGPR) play key role in biopesticide development. A wide range of environmentally safe antimicrobial agents are already being manufactured. The current investigation was focused on exploring the antifungal activity of Bacillus thuringiensis lipopeptide surfactin against fungal phytopathogen Fusarium graminearum. B. thuringensis was isolated from the rhizosphere of maize crop and cultivated to produce lipopeptides. Surfactin was identified by high-performance liquid chromatography (HPLC) from the extract at 210 nm, retention time 3-5 minutes and the obtained peaks area was 3.990. The growth of F. graminearum was successfully inhibited by surfactin at different concentrations. Among these, 80 % concentration showed the highest zone of inhibition in comparison to 60 %, 40 % and 20 % concentrations (p < 0.005), respectively. The current study concludes B. thuringensis lipopeptide surfactin has a high potential to inhibit the growth of F. graminearum.
- Published
- 2021
- Full Text
- View/download PDF
34. Urate Crystals; Beyond Joints
- Author
-
Muhammad Israr Ahmad, Salman Masood, Daniel Moreira Furlanetto, and Savvas Nicolaou
- Subjects
hyperuricemia ,gout ,DECT ,extra-articular ,MSU crystal deposition ,Medicine (General) ,R5-920 - Abstract
Gout is the most common inflammatory arthropathy caused by the deposition of monosodium urate (MSU) crystals. The burden of gout is substantial with increasing prevalence of gout globally. The prevalence of Gout in the United States has increased by over 7% in the last two decades. Initially, it was believed that MSU crystal deposits occur only in the joints with the involvement of the periarticular soft tissues, but recent studies have shown the presence of MSU crystal deposition in extra-articular sites as well. Human plasma becomes supersaturated with uric acid at 6.8 mg/dl, a state called hyperuricemia. Beyond this level, uric acid crystals precipitate out of the plasma and deposit in soft tissues, joints, kidneys, etc. If left untreated, hyperuricemia leads to chronic gout characterized by the deposition of tophi in soft tissues such as the joints, tendons, and bursae. With the advent of newer imaging techniques such as DECT, MSU crystals can be visualized in various extra-articular sites. Extra-articular deposition of MSU crystals is believed to be the causative factor for the development of multiple comorbidities in gout patients. Here, we review the literature on extra-articular deposition of urate crystals and the role of dual-energy computed tomography (DECT) in elucidating multi-organ involvement. DECT has emerged as an invaluable alternative for accurate and efficient MSU crystal deposition detection. Future studies using DECT can help determine the clinical consequences of extra-articular deposition of MSU in gout patients.
- Published
- 2021
- Full Text
- View/download PDF
35. Taxonomic and functional responses of soil microbial communities to slag-based fertilizer amendment in rice cropping systems
- Author
-
Suvendu Das, Hyo Suk Gwon, Muhammad Israr Khan, Joy D. Van Nostrand, Muhammad Ashraful Alam, and Pil Joo Kim
- Subjects
Environmental sciences ,GE1-350 - Abstract
The effective utilization of slag-based Silicon fertilizer (silicate fertilizer) in agriculture to improve crop productivity and to mitigate environmental consequences turns it into a high value added product in sustainable agriculture. Despite the integral role of soil microbiome in agricultural production and virtually all ecosystem processes, our understanding of the microbial role in ecosystem functions and agricultural productivity in response to the silicate fertilizer amendment is, however, elusive. In this study, using 16S rRNA gene and ITS amplicon illumina sequencing and a functional gene microarray, i.e., GeoChip 5, we report for the first time the responses of soil microbes and their functions to the silicate fertilizer amendment in two different geographic races of Oryza sativa var. Japonica (Japonica rice) and var. Indica (Indica rice). The silicate fertilizer significantly increased soil pH, photosynthesis rate, nutrient (i.e., C, Si, Fe, P) availability and crop productivity, but decreased N availability and CH4 and N2O emissions. Moreover, the silicate fertilizer application significantly altered soil bacterial and fungal community composition and increased abundance of functional genes involved in labile C degradation, C and N fixation, phosphorus utilization, CH4 oxidation, and metal detoxification, whereas those involve in CH4 production and denitrification were decreased. The changes in the taxonomic and functional structure of microbial communities by the silicate fertilizer were mostly regulated by soil pH, plant photosynthesis, and nutrient availability. This study provides novel insights into our understanding of microbial functional processes in response to the silicate fertilizer amendment in rice cropping systems and has important implications for sustainable rice production. Keywords: Microbial responses/feedbacks, Silicate fertilization, GeoChip, Functional genes, Illumina sequencing
- Published
- 2019
- Full Text
- View/download PDF
36. Health risk assessment of heavy metals via consumption of dietary vegetables using wastewater for irrigation in Swabi, Khyber Pakhtunkhwa, Pakistan
- Author
-
Fawad Ali, Muhammad Israr, Shafiq Ur Rehman, Azizullah Azizullah, Hussain Gulab, Muhammad Idrees, Rashid Iqbal, Aishma Khattak, Majid Hussain, and Fahad Mohammed Al-Zuaibr
- Subjects
Medicine ,Science - Abstract
Health assumptions to the population due to the utilization of contaminated vegetables have been a great concern all over the world. In this study, an investigation has been conducted to ascertain metal concentrations in the wastewater, soil and commonly consumed vegetables from the vicinity of Gadoon Industrial Estate Swabi, Khyber Pakhtunkhwa Pakistan. Physicochemical parameters such as pH, electrical conductivity (EC), total dissolved solids (TDS), total suspended solids (TSS) and total solids (TS) and heavy metals such as Pb, Cr, Cd, Ni, Zn, Cu, Fe, Mn were determined using Atomic Absorption Spectrophotometer (AAS). Moreover, possible health risks due to the consumption of vegetables have also been estimated. pH and TSS in wastewater were found to be higher than the permissible limit set by WHO (1996). These results revealed that Cr concentration in the wastewater was above the permissible limits of United States Environmental Protection Agency (USEPA) which may lead to a detrimental effect on soil quality deterioration, ultimately leading to food contamination. ANOVA analysis demonstrated a significant difference in soil samples for Pb, Cr, Cd, Ni, Zn and Cu at p ≤ 0.001, for Mn at p ≤ 0.05 while no significant difference was observed for Fe respectively. ANOVA analysis also exhibited the highest mean value for Pb, Cr, Cd and Zn in vegetables. A substantial positive correlation was found among the soil and vegetable contamination. The transfer factor for Cr, Pb, Zn, Mn, Ni, Cd and Cu was greater than 0.5 due to contamination caused by domestic discharges and industrial effluents. Health assessment via consumption of dietary vegetables revealed a higher level than the permissible limit (HRI > 1) for Pb and Cd in children and adults. Enrichment factor (EF) due to consumption of vegetables was found higher for Pb and Cr respectively. Based on the findings of this study, there would be a significant risk to the consumers associated with consumptions of vegetables being cultivated in Gadoon Industrial Estate area of district Swabi. Therefore, strict regulatory control measures are highly recommended for the safety of vegetables originated from the study area.
- Published
- 2021
37. Acclimation of cadmium-induced genotoxicity and oxidative stress in mung bean seedlings by priming effect of phytohormones and proline.
- Author
-
Meher Hassan, Muhammad Israr, Simeen Mansoor, Syeda Amna Hussain, Faiza Basheer, Azizullah Azizullah, and Shafiq Ur Rehman
- Subjects
Medicine ,Science - Abstract
In this research, eight local mung bean (Vigna radiata) varieties were analyzed for their performance against two levels of CdCl2 solution (0.3 and 0.5 mM) alone and priming with gibberellic acid (GA3) (100 μM), salicylic acid (SA) (50 μM) and proline (5 mM) solution prior to Cd exposure. Mung bean seedlings were analyzed for disturbance in cytological, morphological, biochemical and enzymatic parameters under cadmium stress. For cytological studies, 48 h grown mung bean seedlings root tips were used to prepare slides and studied for percent mitotic index (MI%) and to calculate percent C-mitosis, laggard, sticky and fragmented chromosomes, pictures were captured by a Nikon camera (DS-Fi 1 Japan) attached with a microscope. One-week grown mung seedlings were studied for growth traits, malondialdehyde (MDA), protein, proline and antioxidant enzymes. ANOVA and DMR test of this research revealed that all the tested mung bean varieties and treatments were significantly different regarding mitotic index and number of chromosomal aberrations. Both the Cd treatments exhibited increased total chromosomal aberrations with different types and a maximum decrease in MI%. In pretreated samples, GA3, SA and proline serve as mitigating agents that reduce mutagenic effects of Cd in mung bean by increasing MI% and decreasing chromosomal aberrations as compared to non-pretreated samples. Both the Cd treatments showed a decrease in all growth traits. Total proteins were also found to be significantly reduced in a dose-dependent manner in all genotypes. Cd treatment increased the activities of all antioxidant enzymes tested. Cd caused oxidative damage as indicated by elevated levels of MDA content in treated samples in comparison to control. Proline content levels were also high in Cd treated seedlings indicating stress. Results demonstrated that pretreatment with phytohormones and proline before Cd were found to improve all morphological parameters, by altering antioxidant enzymes activities along with a decrease in MDA and proline contents as well. It was further noticed that the performance of GA3 was better at 0.3 mM Cd treatment while SA was found to be a good mitigating agent at 0.5 mM Cd stress in all tested mung bean varieties. This research concluded less deleterious effects of Cd on AZRI-2006 while more sensitivity to NM-51 towards Cd. Priming with phytohormones and proline is a user-friendly, economical, and simple mitigation strategy to reduce Cd toxicity in plants and get better yield from contaminated lands.
- Published
- 2021
- Full Text
- View/download PDF
38. Seroepidemiology and associated risk factors of hepatitis B and C virus infections among pregnant women attending maternity wards at two hospitals in Swabi, Khyber Pakhtunkhwa, Pakistan.
- Author
-
Muhammad Israr, Fawad Ali, Arif Nawaz, Muhammad Idrees, Aishma Khattak, Shafiq Ur Rehman, Azizullah Azizullah, Bashir Ahmad, Syeda Asma Bano, and Rashid Iqbal
- Subjects
Medicine ,Science - Abstract
Background & aimHepatitis B and C infections are global issues that are associated with a massive financial burden in developing countries where vertical transmission is the major mode and remains high. This cross-sectional study was designed to investigate the seroepidemiology and associated risk factors of hepatitis B virus (HBV) and hepatitis C virus (HCV) infections among 375 pregnant women attending antenatal care health facilities at Bacha Khan Medical Complex (BKMC) Shahmansoor and District Head Quarter (DHQ) Hospital Swabi, Khyber Pakhtunkhwa, Pakistan.MethodologyFrom a total of 375 pregnant women selected using systematic random sampling from both hospitals, 10 ml of blood samples were collected and alienated serum was examined for indicators identification through the Immuno-Chromatographic Test (ICT) and 3rd Generation Enzyme-Linked Immunosorbent Assay (ELISA). A pre-structured questionnaire was used to collect the socio-demographic data and possible risk factors. The data was analyzed via SPSS 23.0 statistical software. A chi-square analysis was performed to determine the association between variables. P-value < 0.05 was set statistically significant.ResultsThe overall frequency of HBV and HCV among 375 pregnant women involved in the study was 3.7% and 2.1% respectively. None of the pregnant women were co-infected with HBV and HCV. Dental extraction (P = 0.001) and blood transfusion (P = 0.0005) were significantly allied with HBV infection while surgical procedure (P = 0.0001) was significantly associated with HCV infection. Moreover the sociodemographic characteristics: residential status (P = 0.017) and educational level (P = 0.048) were found significant risk factors of HBsAg and maternal age (P = 0.033) of anti-HCV, respectively.Conclusion & recommendationHBV and HCV infections are intermediary endemic in the study area. A higher prevalence of HBV was detected among pregnant mothers with a history of dental extraction, history of blood transfusion, resident to the urban area and low educational level. The age and surgical procedures were the potential risk factors found significantly associated with HCV positivity among pregnant mothers in our setup. Future negotiations to control vertical transmission should include routine antenatal screening for these infections early in pregnancy and the requirement of efficient preventive tools including the birth dose of the hepatitis B vaccine in combination with hepatitis B immune globulins to the neonate.
- Published
- 2021
- Full Text
- View/download PDF
39. Environmental impacts, water footprint and cumulative energy demand of match industry in Pakistan.
- Author
-
Najeeb Ullah, Syeda Asma Bano, Ume Habiba, Maimoona Sabir, Andleeb Akhtar, Samreen Ramzan, Ayesha Shoukat, Muhammad Israr, Sher Shah, Syed Moazzam Nizami, and Majid Hussain
- Subjects
Medicine ,Science - Abstract
A comprehensive life cycle assessment (LCA) was conducted for the matchsticks industry in the Khyber Pakhtunkhwa province of Pakistan to quantify environmental footprint, water footprint, cumulative energy use, and to identify improvement opportunities in the matchsticks manufacturing process. One carton of matchsticks was used as reference unit for this study. Foreground data was collected from the matchsticks industry through questionnaire surveys, personal meetings, and field measurements. The collected data was transformed into potential environmental impacts through the Centre for Environment Studies (CML) 2000 v.2.05 method present by default in the SimaPro v.9.1 software. Water footprint was calculated using methodology developed by Hoekstra et al., 2012 (water scarcity index) V1.02 and cumulative energy demand by SimaPro v.9.1 software. The results showed that transport of primary material (wood logs), sawn wood for matchsticks, red phosphorous, acrylic varnish, and kerosene fuel oil contributed to the overall environmental impacts. Transport of primary materials and sawn timber for matchsticks contributed significantly to abiotic depletion, global warming, eutrophication potential, ozone depletion, corrosion, human toxicity, and aquatic ecotoxicity effects. The total water footprint for manufacturing one carton of matchsticks was 0.265332 m3, whereas the total cumulative energy demand was 715.860 Mega Joules (MJ), mainly sourced from non-renewable fossil fuels (708.979 MJ). Scenario analysis was also conducted for 20% and 30% reduction in the primary material distance covered by trucks and revealed that reducing direct material transport distances could diminish environmental impacts and energy consumption. Therefore, environmental footprint could be minimized through diverting matchsticks industries freight from indigenous routes to high mobility highways and by promoting industrial forestry close to industrial zones in Pakistan. Many industries did not have emissions control systems, exceeding the permissible limit for emissions established by the National Environmental Quality Standards (NEQS) of Pakistan. Thus, installation of emissions control system could also diminish emissions from match industry in Pakistan.
- Published
- 2021
- Full Text
- View/download PDF
40. Iron fertilization and soil carbon sequestration in rice paddies
- Author
-
Galgo, Snowie Jane C., Estrada, Lorraine Joule B., Park, So Yeong, Canatoy, Ronley C., Khan, Muhammad Israr, Turner, Benjamin L., and Kim, Pil Joo
- Published
- 2024
- Full Text
- View/download PDF
41. Antibacterial activity of different fractional extracts of cerastium glomeratum
- Author
-
Himayat Ullah, Muhammad Hubaib, Muhammad Israr, Muhammad Mushtaq, Muhammad Zeeshan, and Muhammad Mustafa
- Subjects
Antibacterial activity, different fractions of extract, well diffusion, S.aureus and E.coli ,Pharmacy and materia medica ,RS1-441 ,Chemistry ,QD1-999 - Abstract
Every plant available in the universe is not produced to be the part of biodiversity, but is also produced to obtain medicinal purposes. The medicinal value of the plant is due to the availability of various chemical compounds [1]. Since prehistoric time, the crude extract of plant is used to cure various diseases, although the biologically active components of the plant were unidentified [2]. In the present study the antibacterial activity is performed for various extracts of cerastium glomeratum. The plant cerastium glomeratum was collected from near kalpani river Mardan, Pakistan and was identified by lecturer Israr department of botany GPGC Mardan, Pakistan. The plant was dried under shade and grinded into powder form. The extraction process was done by using soxhlet apparatus, reflux condenser and maceration process using ethanol as a solvent. The extract was divided into different fractions of n-hexane, DCM, ethyl acetate and water. These four extracts were tested against gram positive (staphylococcus aureus) and gram negative (E.coli) bacteria using well diffusion technique. The water extract show a wide range inhibition zone against both gram positive and gram negative bacteria while n-hexane, DCM and ethyl acetate fractions show no zone of inhibition against bacteria. In effort to find new antibacterial compounds cerastium glomeratum seems to be a good plant for additional phytochemical studies.
- Published
- 2020
- Full Text
- View/download PDF
42. Antibacterial Activity of Different Extract of Medicinal Plant Antirrihnum Orontium.
- Author
-
Himayat Ullah, Shehzad Saleem, Wisal Ahmad, Muhammad Hanif, Zahid Ali, and Muhammad Israr
- Subjects
Antirrhinum Orontium, Antibacterial, Plantaginaceae, Escherichia coli, Staphylococcus aureus ,Pharmacy and materia medica ,RS1-441 ,Chemistry ,QD1-999 - Abstract
Antirrhinum Orontium is belonging to the family Plantaginacea commonly known as lesser snapdragon which is a flowering plant belong to genus Antirrhinum. It was traditionally used in treatment of Tumor, Eye inflammation and Ulcer. Antirrhinum Orontium is contain mostly tertiary alkaloids bases one of them is identified as 4-methyl-2, 6-naphthyridine and Choline is identified as quaternary base. The recent study is to investigate the antibacterial activity of Ethyl acetate, Dichloromethane, Hexane and Water extracts of Antirrhinum Orontium, against the pathogen like Escherichia coli and Staphylococcus aureus. Both the Soxhlet and Maceration water extract were found most active from the other extract against Escherichia coli and Staphylococcus aureus by using agar well diffusion method. The measured zone of inhibition for Soxhlet water extract is 21±0.05mm and Maceration water extract is 20±0.05mm against gram positive Staphylococcus aureus, while for gram negative Escherichia coli 23±0.05mm is measured for Soxlet and 21±0.05mm measured for Maceration water extracts
- Published
- 2020
- Full Text
- View/download PDF
43. Preparation and Characterization of Controlled-Release Floating Bilayer Tablets of Esomeprazole and Clarithromycin
- Author
-
Muhammad Israr, Nicola Pugliese, Arshad Farid, Shakira Ghazanfar, Alessandro Di Cerbo, Muhammad Muzammal, Abdulhakeem S. Alamri, Syed Mohammed Basheeruddin Asdaq, Ashfaq Ahmad, and Kamran Ahmad Khan
- Subjects
clarithromycin ,esomeprazole ,floating bilayer tablets ,Organic chemistry ,QD241-441 - Abstract
Controlled-release effervescent floating bilayer tablets reduce dosage frequency and improve patient compliance with enhanced therapeutic outcomes. Generally, two different tablets of clarithromycin and esomeprazole, respectively, are given for the treatment of Helicobacter pylori infection and it might be worth incorporating both in a single tablet. In the current study, controlled-release floating bilayer tablets of clarithromycin and esomeprazole (F1–F4) were developed with different rates of polymeric materials by a direct compression method. During the formulation, Fourier-transform infrared spectroscopy (FTIR) analysis was performed for possible interactions between drugs and excipients. No interactions between drugs and excipients were noted. Moreover, the bilayer tablets’ thickness, diameter, friability, hardness, weight variation, dissolution, and percent purity were found within the acceptable limits. The floating lag time and total floating time of all formulations were found to be < 25 s and 24 h, respectively. The release of both the clarithromycin and esomeprazole started at the same time from the controlled-release floating bilayer tablets by anomalous non-Fickian diffusion, and the polymeric materials extended the drug release rate up to 24 h. In the case of F1, the results approached ideal zero-order kinetics. The dissolution profiles of the tested and reference tablet formulations were compared, but no significant differences were observed. It can be concluded that such controlled-release effervescent floating bilayer tablets can be efficiently used in clinical practice to reduce dosage frequency and increase patient compliance with continuous drug release for 24 h, which ultimately might enhance therapeutic efficacy.
- Published
- 2022
- Full Text
- View/download PDF
44. Mini Hydel Power Generation From Over Head Tanks Using Pelton Turbine
- Author
-
Basit Ali, Abdul Attayyab Khan, Kiran Khalid, Muhammad Israr, and Madiha Nazim
- Subjects
pelton turbine ,power generation ,green energy ,low head ,hydro power ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 - Abstract
The electricity demand is increasing day by day all over the world. A lot of efforts are made to make the buildings productive and self sustainable. Saving a small amount of electricity can contribute huge to full fill the demand of electricity. Due to this fact it is proposed to get energy from overhead water tanks. Following this approach a 20 m high water tank is considered. Water in the pipeline rotates a mini-hydro turbine with appropriate rotation. The feasibility to generate electricity from the potential energy of water of the pipeline has been founded. The purpose of this system is to find the cost effective and environmental friendly solution of the power generation using low-cost mini-hydro turbine having negligible environmental effects. The experimental system of this idea consists of a mini-hydro turbine having diameter of 0.21 m which is coupled with a dc generator via chain-gear mechanism to obtain desired rotation. Sensor box is designed to monitor the technical parameters. Led bulbs are introduced in the system to indicate and validate the output and results. The calculations and theoretical concepts are presented using basic theory and equations of fluid mechanics and turbo-mechanics. The outputs are validated using numerical and experimental results.
- Published
- 2020
- Full Text
- View/download PDF
45. Dual solutions in MHD stagnation point flow of nanofluid induced by porous stretching/shrinking sheet with anisotropic slip
- Author
-
S. Nadeem, Muhammad Israr-ur-Rehman, S. Saleem, and Ebenezer Bonyah
- Subjects
Physics ,QC1-999 - Abstract
In this article, the steady three-dimensional stagnated flow induced by a porous moving system is investigated. The flow field and thermal distribution are subject to anisotropic slip and a magnetic field. The existing nonlinear equations are unraveled numerically using a bvp4c code in Matlab. The impact of various parameters on flow profiles temperature surface friction and surface heat transfer rate is put together in graphs and tables. The accomplished results depict that the velocity fields enhance for both S < 0 (suction) and S > 0 (injection). Similarly, it is noticed that surface shear stress and heat transfer possess stronger behavior for the case of injection. The behavior of temperature fields is opposite for upper and lower solutions when checked for the Prandtl number Pr. Stability analysis shows that the primary solution is stable and substantially feasible, whereas the second solution is not stable. The velocity h(η) decays with the magnetic field for both solutions.
- Published
- 2020
- Full Text
- View/download PDF
46. Copper(I)-catalyzed tandem reaction: synthesis of 1,4-disubstituted 1,2,3-triazoles from alkyl diacyl peroxides, azidotrimethylsilane, and alkynes
- Author
-
Muhammad Israr, Changqing Ye, Munira Taj Muhammad, Yajun Li, and Hongli Bao
- Subjects
alkyl diacyl peroxides ,azidotrimethylsilane ,click reaction ,copper catalysis ,radical ,1,2,3-triazoles ,Science ,Organic chemistry ,QD241-441 - Abstract
A copper-catalyzed azide–alkyne cycloaddition (CuAAC) reaction for the synthesis of 1,4-disubstituted 1,2,3-triazoles from alkyl diacyl peroxides, azidotrimethylsilane, and terminal alkynes is reported. The alkyl carboxylic acids is for the first time being used as the alkyl azide precursors in the form of alkyl diacyl peroxides. This method avoids the necessity to handle organic azides, as they are generated in situ, making this protocol operationally simple. The Cu(I) catalyst not only participates in the alkyl diacyl peroxides decomposition to afford alkyl azides but also catalyzes the subsequent CuAAC reaction to produce the 1,2,3-triazoles.
- Published
- 2018
- Full Text
- View/download PDF
47. Characteristics of buoyancy force on stagnation point flow with magneto-nanoparticles and zero mass flux condition
- Author
-
Iftikhar Uddin, Muhammad Altaf Khan, Saif Ullah, Saeed Islam, Muhammad Israr, and Fawad Hussain
- Subjects
Physics ,QC1-999 - Abstract
This attempt dedicated to the solution of buoyancy effect over a stretching sheet in existence of MHD stagnation point flow with convective boundary conditions. Thermophoresis and Brownian motion aspects are included. Incompressible fluid is electrically conducted in the presence of varying magnetic field. Boundary layer analysis is used to develop the mathematical formulation. Zero mass flux condition is considered at the boundary. Non-linear ordinary differential system of equations is constructed by means of proper transformations. Interval of convergence via numerical data and plots are developed. Characteristics of involved variables on the velocity, temperature and concentration distributions are sketched and discussed. Features of correlated parameters on Cf and Nu are examined by means of tables. It is found that buoyancy ratio and magnetic parameters increase and reduce the velocity field. Further opposite feature is noticed for higher values of thermophoresis and Brownian motion parameters on concentration distribution. Keywords: Stagnation point, MHD, Nanoparticles, Zero mass flux condition
- Published
- 2018
- Full Text
- View/download PDF
48. Dietary Grape (Vitis vinifera) Seed Powder and Zn–Gly Chelate Complex for Mitigating Heat Stress in Broiler Chickens: Growth Parameters, Malondialdehyde, Paraoxonase-1, and Antibody Titer
- Author
-
Muhammad Israr, Naila Chand, Rifat Ullah Khan, Ibrahim A. Alhidary, Mutassim M. Abdelrahman, Hani Hassan Al-Baddani, Vito Laudadio, and Vincenzo Tufarelli
- Subjects
broiler ,grape seeds ,heat stress ,zinc ,redox balance ,Agriculture (General) ,S1-972 - Abstract
A total of 300 day old broiler chicks (Hubbard) were assigned to 30 floor pens (10 birds per pen) under cyclic heat stress. Three diets including a control, as well as two levels of grape seed powder (GSP) and zinc (OZ) at the rates of 2.5 g/kg GSP + 50 mg/kg OZ and 5 g/kg GSP + 50 mg/kg OZ, were supplied to the broilers for 35 days. According to the results, broiler feed intake improved (p < 0.05) in GSP + OZ groups from 3–5 weeks and on an overall basis compared to the control diet. Body weight increased (p < 0.05) in GSP-5 + OZ-50 during weeks 2–5 and on an overall basis. The findings indicated that feed conversion ratio (FCR) decreased (p < 0.05) during week 5 in broilers supplemented with GSP-5 + OZ-50. The antibody titer (HI) against Newcastle disease (ND) was higher (p < 0.05) in GSP + OZ groups compared to control treatment. The value of malondialdehyde (MDA) decreased (p < 0.05) under GSP + OZ diets compared to control. Moreover, paraoxonase (PON1) was higher (p < 0.05) in GSP + OZ groups compared to untreated broilers. In conclusion, GSP + OZ positively supported growth traits, reduced MDA, and augmented PON1 and HI titer against ND in broilers exposed to heat stress.
- Published
- 2021
- Full Text
- View/download PDF
49. Heat Transport Phenomena for the Darcy–Forchheimer Flow of Casson Fluid over Stretching Sheets with Electro-Osmosis Forces and Newtonian Heating
- Author
-
Xianqin Zhang, Dezhi Yang, Muhammad Israr Ur Rehman, and Aamir Hamid
- Subjects
Darcy–Forchheimer porous medium ,electro-osmosis forces (EOFs) ,MHD ,Ohmic heating ,Casson fluid ,stretching sheet ,Mathematics ,QA1-939 - Abstract
In this study, an investigation has been carried out to analyze the impact of electro-osmotic effects on the Darcy–Forchheimer flow of Casson nanofluid past a stretching sheet. The energy equation was modelled with the inclusion of electro-osmotic effects with viscous and Joule dissipations. The governing system of partial differential equations were transformed by using the suitable similarity transformations to a system of ordinary differential equations and then numerically solved by using the Runge–Kutta–Fehlberg method with a shooting scheme. The effects of various parameters of interest on dimensionless velocity and temperature distributions, as well as skin friction and heat transfer coefficient, have been adequately delineated via graphs and tables. A comparison with previous published results was performed, and good agreement was found. The results suggested that the electric and Forchheimer parameters have the tendency to enhance the fluid velocity as well as momentum boundary layer thickness. Enhancements in temperature distribution were observed for growing values of Eckert number. It was also observed that higher values of electric field parameter diminished the wall shear stress and local Nusselt number.
- Published
- 2021
- Full Text
- View/download PDF
50. Potential Effects of Biochar Application for Improving Wheat (Triticum aestivum L.) Growth and Soil Biochemical Properties under Drought Stress Conditions
- Author
-
Muhammad Saqlain Zaheer, Hafiz Haider Ali, Walid Soufan, Rashid Iqbal, Muhammad Habib-ur-Rahman, Javaid Iqbal, Muhammad Israr, and Ayman El Sabagh
- Subjects
biochar ,drought ,enzymatic activities ,mineral nutrients ,soil properties ,Agriculture - Abstract
Different soil amendments are applied to improve soil properties and to achieve higher crop yield under drought conditions. The objective of the study was to investigate the role of biochar for the improvement of wheat (Triticum aestivum L.) growth and soil biochemical properties under drought conditions. A pot experiment with a completely randomized design was arranged with four replications in a wire house. Drought was imposed on two critical growth stages (tillering and grain filling) and biochar was applied to the soil 10 days before sowing at two different rates (28 g kg−1 and 38 g kg−1). Soil samples were collected to determine the soil properties including soil respiration and enzymatic parameters after crop harvesting. Results showed that water stress negatively affects all biochemical properties of the soil, while biochar amendments positively improved these properties. Application of biochar at 38 g kg−1 provided significantly higher mineral nutrients, Bray P (18.72%), exchangeable-K (7.44%), soil carbon (11.86%), nitrogen mineralization (16.35%), and soil respiration (6.37%) as a result of increased microbial activities in comparison with the 28 g kg−1 rate.
- Published
- 2021
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.