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Abstract The emergence of drone-based innovative cyber security solutions integrated with the Internet of Things (IoT) has revolutionized navigational technologies with robust data communication services across multiple platforms. This advancement leverages machine learning and deep learning methods for future progress. In recent years, there has been a significant increase in the utilization of IoT-enabled drone data management technology. Industries ranging from industrial applications to agricultural advancements, as well as the implementation of smart cities for intelligent and efficient monitoring. However, these latest trends and drone-enabled IoT technology developments have also opened doors to malicious exploitation of existing IoT infrastructures. This raises concerns regarding the vulnerability of drone networks and security risks due to inherent design flaws and the lack of cybersecurity solutions and standards. The main objective of this study is to examine the latest privacy and security challenges impacting the network of drones (NoD). The research underscores the significance of establishing a secure and fortified drone network to mitigate interception and intrusion risks. The proposed system effectively detects cyber-attacks in drone networks by leveraging deep learning and machine learning techniques. Furthermore, the model's performance was evaluated using well-known drones’ CICIDS2017, and KDDCup 99 datasets. We have tested the multiple hyperparameter parameters for optimal performance and classify data instances and maximum efficacy in the NoD framework. The model achieved exceptional efficiency and robustness in NoD, specifically while applying B-LSTM and LSTM. The system attains precision values of 89.10% and 90.16%, accuracy rates up to 91.00–91.36%, recall values of 81.13% and 90.11%, and F-measure values of 88.11% and 90.19% for the respective evaluation metrics.

Abstract Tungsten disulfide (WS2) nanotubes exhibit various unique properties depending on their structures, such as their diameter and wall number. The development of techniques to prepare WS2 nanotubes with the desired structure is crucial for understanding their basic properties. Notably, the synthesis and characterization of multi-walled WS2 nanotubes with small diameters are challenging. This study reports the synthesis and characterization of small-diameter WS2 nanotubes with an average inner diameter of 6 nm. The optical absorption and photoluminescence (PL) spectra of the as-prepared nanotubes indicate that a decrease in the nanotube diameter induces a red-shift in the PL, suggesting that the band gap narrowed due to a curvature effect, as suggested by theoretical calculations.

Introduction: Dyspepsia is a common problem in regular outpatient clinical practice. In Kashmir province of North India little research has been done on studying clinically important endoscopic findings in non resolving dyspeptic patients of different ages and ethnicities. The purpose of this study was to assess the diagnostic value of Upper Gastrointestinal Endoscopy (UGIE) in patients with non resolving dyspepsia who had not undergone endoscopic evaluation previously. Aim: To determine the diagnostic value of endoscopy in patients with non resolving dyspepsia and to correlate the endoscopic findings with clinical perspective of patients with or without alarming symptoms and signs. Materials and Methods: This retrospective cross-sectional, single-centre study was done in the Department of General Medicine, SKIMS Medical College and Hospital (tertiary care hospital), Srinagar, Jammu and Kashmir, India, from July 2017 to June 2022. Study involved 1600 patients who presented with non resolving dyspepsia and underwent endoscopic evaluation. Non resolving dyspepsia was defined as persistent upper abdominal discomfort associated with heart burn or bloating after three to six weeks of adequate proton pump inhibitor therapy. Data was gathered and analysis was done based on demographics, clinical symptoms with or without alarming features by using Statistical Package for the Social Sciences (SPSS) software version 22.0. Results: A total of 1600 patients were incorporated in the study. The mean±Standard Deviation (SD) age of the study group was 52±10 years, and 63% of the patients were males. Epigastric pain was the predominant symptom (61%) followed by heartburn (22%). Abnormal endoscopic findings were noted in 47.75% of the patients involved in this study. Gastritis (19.4%) was the most common finding observed. Gastric carcinoma was the least common diagnosis, seen in 2.93% subjects mostly in the elderly age group. Conclusion: In the present study, patients with dyspepsia frequently had normal or clinically insignificant upper gastrointestinal endoscopic findings regardless of age. Based on the present study conducted in a large number of patients invasive procedure like UGIE should be reserved for patients having definite alarming features as majority of patients don’t have clinically significant findings and should be treated adequately on Functional Dyspepsia (FD) protocol before a definitive investigative procedure is performed. The present study strongly indicates overuse of UGIE especially in the absence of alarming features.

Objective: To assess the knowledge of physicians working in the emergency department in choosing appropriate diagnostic imaging in different clinical scenarios. Method: The cross-sectional study was conducted at the Emergency Department of the Aga Khan University Hospital, Karachi, from January 3 to July 2, 2018, and comprised registered medical officers, residents, and consultants of either gender involved in emergency care decision-making. Data was collected using a structured questionnaire that had 10 clinical scenarios based on the American College of Radiology Appropriateness Criteria guidelines. Data was analysed using SPSS 17. Results: Of the 82 participants, 50(61%) were males and 32(39%) were females. The overall mean age was 34.06±6.42 years. Of the total, 50(61%) subjects had appropriate knowledge regarding imaging. The overall mean number of correct responses was 6.90±1.20. Those belonging to the Emergency Medicine specialty had significantly higher odds of having appropriate knowledge compared to participants belonging to other specialties when adjusted for age, gender, position of practice and years of Emergency Medicine training (Odds ratio: 4.73; 95% confidence interval: 1.07-20.91). Conclusion: Physicians belonging to the Emergency Medicine specialty were more likely to have adequate knowledge regarding imaging appropriateness compared to other specialties. Key Words: Appropriateness criteria, Emergency medicine, American College of Radiology, Resident education, Guidelines.

Pterostilbene (PTS) is a naturally occurring phytoalexin. PTS displays limited water solubility, which consequently results in its diminished oral bioavailability. Therefore, a ternary inclusion complex (TIC) of PTS with β-cyclodextrin (βCD) in the presence of ternary substance Pluronic® F-127 (PLF) was prepared using microwave technology. The PTS-TIC was characterized by dissolution performance. Further, the prepared TIC was characterized by DSC, FTIR, NMR, XRD, and SEM analysis. Additionally, the antioxidant activity of PTS and PTS-TIC was also evaluated. Phase-solubility studies revealed that PTS’s solubility in water was increased by 6.72 times when βCD/PLF was present. In comparison with PTS, prepared PTS-TIC produced a considerable improvement in PTS release. After 1 h, 74.03 ± 4.47% of PTS was released from PTS-TIC. Outcomes of DSC, FTIR, NMR, XRD, and SEM analysis revealed that the PTS was enclosed in the βCD cavity. In terms of antioxidant properties, the PTS-TIC formulation demonstrated superior activity compared to PTS, possibly attributed to the improved solubility of PTS resulting from the formation of TIC using microwave technology. It was concluded that microwave technology proved to be an extremely beneficial means of interacting PTS with βCD. In addition to increasing the solubility of PTS, the findings are also expected to improve its bioavailability by increasing its solubility. As a result, this study could provide insight into potential methods for enhancing the solubility of polyphenolic substances like PTS.

BACKGROUND: Congestive cardiac failure (CCF) and deep vein thrombosis (DVT) may coexist in a patient. The prevalence of DVT has been reported up to 34.1% in CCF patients, and its presence may increase the morbidity and mortality of CCF patients. The presence of DVT may increase the morbidity and mortality of CCF patients. With this background in mind, we conducted a study to know the prevalence of DVT in CCF patients from our part of the world. MATERIALS AND METHODS: An analytical cross-sectional study was carried out over a period of 1 year from March 2015 to February 2016 on 50 patients admitted with CCF to our hospital. After obtaining information on underlying comorbid illness, duration of CCF symptoms, and preliminary investigations, the patients were subjected to venous Doppler ultrasound. RESULTS: A total of 50 patients admitted with the diagnosis of CCF were enrolled in this study. The mean age of patients was 63.28 ± 9.5 years. The mean body mass index of the patients was 24.48 ± 2.8 kg/m2. Five out of 50 patients were found to have deep vein thrombosis in our study. The duration of symptoms of more than 10 days before seeking medical consultation was statistically significant in patients of CCF with DVT. CONCLUSION: In our study, 10% of patients with CCF had DVT on venous Doppler ultrasound. A longer duration of CCF symptoms before seeking medical consultation was significantly associated with DVT in our patients.

Diabetes treatment requires focused administration with quality systemic circulation to determine the optimal therapeutic window. Intestinal distribution through oral administration with nanoformulation provides several benefits. Therefore, the purpose of this study is to create plumbagin enclosed within niosomes using the quality by design (QbD) strategy for efficient penetration and increased bioavailability. The formulation and optimization of plumbagin-loaded niosomes (P-Ns-Opt) involved the use of a Box–Behnken Design. The particle size (PDI) and entrapment efficiency of the optimized P-Ns-Opt were 133.6 nm, 0.150, and 75.6%, respectively. TEM, DSC, and FTIR were used to analyze the morphology and compatibility of the optimized P-Ns-Opt. Studies conducted in vitro revealed a controlled release system. P-Ns-Opt’s antioxidant activity, α-amylase, and α-glucosidase were evaluated, and the results revealed a dose-dependent efficacy with 60.68 ± 0.02%,90.69 ± 2.9%, and 88.43 ± 0.89%, respectively. In summary, the created P-Ns-Opt demonstrate remarkable potential for antidiabetic activity by inhibiting oxygen radicals, α-amylase, and α-glucosidase enzymes and are, therefore, a promising drug delivery nanocarrier in the management and treatment of diabetes.

Objectives: To determine the frequency of Temporary epicardial pacing wires usage and its predictors in the immediate postoperative period in isolated coronary artery bypass graft surgery. Method: The longitudinal study was conducted at the Aga Khan University Hospital, Karachi, from September 2019 to August 2020, and comprised adult patients of either gender who underwent isolated coronary artery bypass graft in the Department of Cardiothoracic Surgery. Demographic, peri-operative and post-operative Temporary Epicardial Pacing Wires use data was extracted from patient's files and the institutional electronic database. Logistic regression models were built to explore predictors of Temporary epicardial pacing wires usage. Data was analysed using SPSS 22. Results: Of the 322 cases evaluated, 27(8.4%) required the use of Temporary Epicardial Pacing Wires. Mean age of the patients requiring temporary epicardial pacing wires was 66.3±8.9 years compared to 58.7±8.9 years in those who did not require it (p

The current study investigated “pharmacodynamics and pharmacokinetics interactions” of losartan with Curcuma longa (CUR) and Lepidium sativum (LS) in hypertensive rats. Hypertension was induced by oral administration of L-NAME (40 mg/kg) for two weeks. Oral administration of CUR or LS shows some substantial antihypertensive activity. The systolic blood pressure (SBP) of hypertensive rats was decreased by 7.04% and 8.78% 12 h after treatment with CUR and LS, respectively, as compared to rats treated with L-NAME alone. LS and CUR display the ability to potentiate the blood pressure-lowering effects of losartan in hypertensive rats. A greater decrease in SBP, by 11.66% and 13.74%, was observed in hypertensive rats treated with CUR + losartan and LS + losartan, respectively. Further, both the investigated herbs, CUR and LS, caused an increase in plasma concentrations of losartan in hypertensive rats. The AUC0-t, AUC0-inf and AUMC0-inf of losartan were increased by 1.25-fold, 1.28-fold and 1.09-fold in hypertensive rats treated with CUR + losartan. A significant (p < 0.05) increase in AUC0-t (2.41-fold), AUC0-inf (3.86-fold) and AUMC0-inf (8.35-fold) of losartan was observed in hypertensive rats treated with LS + losartan. The present study affirms that interactions between CUR or LS with losartan alter both “pharmacokinetics and pharmacodynamics” of the drug. Concurrent administration of losartan with either CUR or LS would require dose adjustment and intermittent blood pressure monitoring for clinical use in hypertensive patients. Additional investigation is necessary to determine the importance of these interactions in humans and to elucidate the mechanisms of action behind these interactions.

BACKGROUND & OBJECTIVE: As Rota virus leads to significant morbidity in children 2 months to 5 years, this study was done to observe the effect of one dose of nitazoxanide on the total duration of rotavirus diarrhea. The primary objective was to evaluate the reduction in the mean duration of viral diarrhea in children after administration of first dose of Nitazoxanide. METHODLOGY: This descriptive study was done in the Department of Pediatric Medicine Unit I, Mayo Hospital, Lahore from Jan 2016 to June 2016 after approval from the ethical review committee. Sample size calculated was 175 using WHO sample size calculator. Patients of 4–5 years were given 200 mg nitazoxanide twice daily for 3 days; 100 mg nitazoxanide was given twice daily to 12–47 months age group, and patient of

The development of Clostridium difficile infection in COVID-19 patients is an understudied complication of the disease. Herein, we present the case of a 46-year-old man who developed severe healthcare-associated C. difficile infection leading to toxic megacolon and perforation in the setting of COVID-19 infection. It is important to continue to follow guidelines regarding antibiotics in healthcare settings to prevent such complications.

Objective: To determine the association between Doppler Parameters of average peak portal vein velocity and flow direction and Child Pugh classes of patients suffering from the chronic liver disease. Study Design: It was a descriptive study. Place and Duration of Study: The study was conducted from December 2013 to January 2015 at the Radiology Department of Holy Family Hospital, Rawalpindi, Pakistan. Materials and Methods: Selected chronic liver disease (CLD) patients were examined with gray scale and Doppler USG for assessment of portal vein (PV). Average peak portal venous velocity (PVV) and direction of flow in the main portal vein were recorded. Doppler findings were correlated with clinical features and laboratory findings in three classes (A,B & C) of patients using Child Pugh criteria to establish any probable association between them (appendix: I). Results: Out of total 115 CLD patients studied, 47.8% were in Child Pugh class C. The main portal vein average PVV (cm/sec) in 24.34% patients with Child Pugh class A was 18.75 + 1.88, in 27.82% patients with Child Pugh class B was 14.25 + 0.98 and in 47.82% patients with Child Pugh class C was 8.15 + 1.84. This showed significant fall in portal vein average PVV with advancing Child Pugh class of cirrhosis. Only 10.4% patients showed continuous hepatofugal flow and 4.3% showed bidirectional flow. It was recorded only in Child Pugh class Cpatients. Conclusion: Doppler findings of average peak velocity in the main portal vein fall progressively with worsening of the Child Pugh class. In addition, the direction of flow is also reversed in cases of the Child Pugh class C cirrhosis.

SARS-CoV-2 infection, responsible for the coronavirus disease-2019 (COVID-19) has rapidly spread, causing a global pandemic. COVID-19 can affect any organ system in the body due to overwhelming dysregulated immune response and long-term effects of the disease is still unknown. Endocrine complications associated with COVID-19 is exceedingly rare. Here we present a unique case of a 44-year-old female who developed adrenal insufficiency and central diabetes insipidus following COVID-19 infection.

The ongoing COVID-19 pandemic is caused by SARs-CoV-2. The virus is transmitted from person to person through droplet infections i.e. when infected person is in close contact with another person. In January 2020, first report of detection of SARS-CoV-2 in faeces, has made it clear that human wastewater might contain this virus. This may illustrate the probability of environmentally facilitated transmission, mainly the sewage, however, environmental conditions that could facilitate faecal oral transmission is not yet clear. We used existing Pakistan polio environment surveillance network to investigate presence of SARs-CoV-2 using three commercially available kits and E-Gene detection published assay for surety and confirmatory of positivity. A Two-phase separation method is used for sample clarification and concentration. An additional high-speed centrifugation (14000Xg for 30 min) step was introduced, prior RNA extraction, to increase viral RNA yield resulting a decrease in Cq value. A total of 78 wastewater samples collected from 38 districts across Pakistan, 74 wastewater samples from existing polio environment surveillance sites, 3 from drains of COVID-19 infected areas and 1 from COVID 19 quarantine center drainage, were tested for presence of SARs-CoV-2. 21 wastewater samples (27%) from 13 districts turned to be positive on RT-qPCR. SARs-COV-2 RNA positive samples from areas with COVID 19 patients and quarantine center strengthen the findings and use of wastewater surveillance in future. Furthermore, sequence data of partial ORF 1a generated from COVID 19 patient quarantine center drainage sample also reinforce our findings that SARs-CoV-2 can be detected in wastewater. This study finding indicates that SARs-CoV-2 detection through wastewater surveillance has an epidemiologic potential that can be used as supplementary system to monitor viral tracking and circulation in cities with lower COVID-19 testing capacity or heavily populated areas where door-to-door tracing may not be possible. However, attention is needed on virus concentration and detection assay to increase the sensitivity. Development of highly sensitive assay will be an indicator for virus monitoring and to provide early warning signs.

BackgroundPakistan has been experiencing intervals of sporadic cases and localized outbreaks in the last two decades. No proper study has been carried out in order to find out the environmental burden of toxigenic V. cholerae as well as how temporal and environmental factors associated in driving cholera across the country.MethodsWe tested waste water samples from designated national environment surveillance sites in Pakistan with RT-PCR assay. Multistage sampling technique were utilized for samples collection and for effective sample processing Bag-Mediated Filtration system, were employed. Results were analysed by district and month wise to understand the geographic distribution and identify the seasonal pattern of V. cholera detection in Pakistan.ResultsBetween May 2019, and February 2020, we obtained and screened 160 samples in 12 districts across Pakistan. Out of 16 sentinel environmental surveillance sites, 15 sites showed positive results against cholera toxigenic gene with mostly lower CT value (mean, 34±2) and have significant difference (p < 0.05). The highest number of positive samples were collected from Sindh in month of November, then in June it is circulating in different districts of Pakistan including four Provinces respectively.ConclusionV. cholera detection do not follow a clear seasonal pattern. However, the poor sanitation problems or temperature and rainfall may potentially influence the frequency and duration of cholera across the country. Occurrence of toxigenic V. cholerae in the environment samples showed that cholera is endemic, which is an alarming for a potential future cholera outbreaks in the country.

Chikungunya virus (CHIKV) is considered a public health problem due to its rapid spread and high morbidity. In 2016-2017 an outbreak of CHIKV was occurred in Pakistan but the data regarding the genomic diversity of CHIKV was not reported. Hence, the current study aimed to determine the genetic diversity of CHIKVs in Pakistan. A cross sectional study was carried out using sera of infected CHIKV patients (n = 1549) during the outbreak in Pakistan (2016-2018). Nucleotide sequencing of non-structural genes of CHIKV from eight isolates were performed followed by phylogenetic analysis using Bayesian method. Phylogenetic analysis suggested that the Pakistani CHIKV strains belonged to Indian Ocean Lineage (IOL) of genotype ECSA and C1.3a clade. Furthermore, the Pakistani isolates showed several key mutations (nsP2-H130Y, nsP2-E145D, nsP4-S55N and nsP4- R85G) corresponding to mutations reported in 2016 Indian strains of CHIKV. The molecular analysis revealed high evolutionary potential of CHIKV strains as well as better understanding of enhanced virulence and pathogenesis of this outbreak. The study highlights the need to continue surveillance in order to understand viral diversity over time and to devise preventive measures to limit diseases transmission in the region.

Aim: Newcastle disease (ND) is an important viral disease for poultry caused by avian paramyxovirus which can be identified by its nature of agglutination activity with red blood cell (RBC) of different species. The study was aimed to characterize the hemagglutinating (HA) activity of ND virus (NDV) at three different temperatures using RBC of five avian species, six mammalian species, and eight different human blood groups. Materials and Methods: The study was conducted from January to December 2014 at Chittagong Veterinary and Animal Sciences University. Five avian and six different mammalian species were selected for the study. In each species, two blood samples were collected aseptically. Eight different blood groups (A+, A−, B+, B−, AB+, AB−, O+, and O−) were studied in human. HA test was performed using two virus strains ND lasota and field isolate of very virulent NDV (VVNDV) with mentioned species of RBC at chilling (4°C), incubating (37°C), and room temperature (24°C). Results: Avian RBC requires less time for agglutination than mammalian RBC. Incubation temperature (37°C) requires lowest time and chilling temperature requires highest time for agglutination of RBC. Duck RBC requires lowest time (17.81 min) while chicken RBC needs highest (57.5 min) time for HA at incubation temperature and at chilling temperature, respectively, against ND lasota virus and with field strain. Goat RBC requires significantly higher time for HA (184.68 min) at chilling temperature than other mammalian species. Human RBC requires almost similar time but O+ and O− blood group do not show any HA activity. Significant variation (p

Ossifying-Fibroma (OF) is a benign neoplasm histopathologically composed of fibrocellularstroma and variable amount of mineralized material. Generally, these tumours in jaw bones are found as solitary lesions. Occurrence of these tumours as Multiple Ossifying Fibromas (MOF) in jaw bones is very rare. The studies reported till now have found an association between MOF and Hyperparathyroid Jaw Tumour Syndrome (HPT-JT). HPT-JT is always associated with the genetic mutation in tumour suppressor gene HRPT2 which encodes protein parafibromin. The simultaneous presentation of ossifying fibroma and other features of HPTJT may or may not be present. Thus, the expression of parafibromin needs to be evaluated in MOF to rule out it’s association with HPT-JT. The present case of 24 years old female patient, showed bilateral maxillary Psammomatoid Juvenile Ossifying Fibroma (PsJOF). The patient was further investigated for association with HPT-JT. Other finding such as blood serum calcium and parathyroid assay were normal. A negative expression of parafibromin in the tumour tissue suggested an association with HPT-JT. Thus, evaluation of parafibromin can help in accurate diagnosis and treatment of MOF of jaws.

To determine the epidemiology of outbreaks of avian influenza A virus (subtypes H5N1, H9N2) in chickens in Bangladesh, we conducted surveys and examined virus isolates. The outbreak began in backyard chickens. Probable sources of infection included egg trays and vehicles from local live bird markets and larger live bird markets.

Escherichia coli O157 (EcO157) infection has been recognized as an important global public health concern. But information on the prevalence of EcO157 in cattle at the global and at the wider geographical levels is limited, if not absent. This is the first meta-analysis to investigate the point prevalence of EcO157 in cattle at the global level and to explore the factors contributing to variation in prevalence estimates.Seven electronic databases- CAB Abstracts, PubMed, Biosis Citation Index, Medline, Web of Knowledge, Scirus and Scopus were searched for relevant publications from 1980 to 2012. A random effect meta-analysis model was used to produce the pooled estimates. The potential sources of between study heterogeneity were identified using meta-regression.A total of 140 studies consisting 220,427 cattle were included in the meta-analysis. The prevalence estimate of EcO157 in cattle at the global level was 5.68% (95% CI, 5.16-6.20). The random effects pooled prevalence estimates in Africa, Northern America, Oceania, Europe, Asia and Latin America-Caribbean were 31.20% (95% CI, 12.35-50.04), 7.35% (95% CI, 6.44-8.26), 6.85% (95% CI, 2.41-11.29), 5.15% (95% CI, 4.21-6.09), 4.69% (95% CI, 3.05-6.33) and 1.65% (95% CI, 0.77-2.53), respectively. Between studies heterogeneity was evidenced in most regions. World region (p

Background: Microalbuminuria is a renal marker of generalized vascular endothelial damage and early atherosclerosis. Patients with microalbuminuria are at increased risk of microvascular and macrovascular complications of diabetes mellitus like myocardial infarction, stroke and nephropathy. Poor glycemic control increases the risk of microalbuminuria. This study was conducted to determine the frequency of microalbuminuria in type 2 diabetes and compare the frequency of microalbuminuria in poor and good glycemic control in type 2 diabetes. Material & Methods: One Hundred and twenty-two type 2 diabetic patients were included in the study. Data on age, gender, duration of diabetes, microalbuminuria and HbA1c were recorded. Urine and blood samples were collected and analyzed for microalbuminuria, blood glucose and HbA1c. All patients of both genders with type 2 diabetes for over 2 years were selected in this study. Patients with other causes of proteinuria were excluded. Results: Out of 122 cases 58(47.5%) were male and 64(52.5%) were female. Average age of patients was 46.87 years and average duration of diabetes was 7.16 years. Over all prevalence of microalbuminuria was 29.5%. Patients with poor glycemic control and good glycemic control have frequency of microalbuminuria of 35.9% and 10% respectively. Conclusion: Uncontrolled diabetes is strongly associated with prevalence of microalbuminuria. Screening for microalbuminuria and HbA1c test should be done both in newly and already diagnosed type 2 diabetic patients as an early marker of renal dysfunction and glycemic control.