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Red luminescent Eu3+ activated CaSiO3 phosphor has been prepared by facile green synthesis hydrothermal route using biomass. Future technologies will be required to synthesize on a massive scale using quick, easy, and affordable ways. The current study deals with the preparation of CaSiO3:Eu3+ using egg shell and rice husk ash. The synthesized powders had a single phased monoclinic structure with space group P1 21/C1. It has been found that addition of Eu3+ ion dopant causes decrease in the optical energy band gap. The phosphor exhibits the intense peak at 612 nm corresponds to 5D0 → 7F2 of the Eu3+ anions upon excitation at 392 nm. The lifetimes ranged from 1.90 to 3.53 ms. With an increase in Eu3+ concentration, emission was tuned towards the red area of the CIE diagram. In order to detect hidden fingerprints on flat surfaces using the powder dusting approach, the CaSiO3:Eu3+ effectiveness was also evaluated. The nontoxicity of CaSiO3:Eu3+ was validated by carrying out a cell viability test on MG 63 cell lines. These outcomes demonstrated that the luminescent CaSiO3:Eu3+ can be used as potential material for display, security encoding, and latent fingerprint applications.

Recent advancements in additive manufacturing (AM), which includes both three-dimensional (3D) and four-dimensional (4D) printing, have revolutionized manufacturing processes across the board. Fused deposition modeling (FDM) is one of the most widespread 3D printing technique that enables the use of a wide range of virgin polymers and polymer-based composites to meet the demand for high-performance, intelligent, and self-assembling structures. Although polymer-based composites offer a variety of multifunctional properties, it is essential to comprehend the mechanical and microstructural properties of parts printed with virgin polymers to analyze and design the additives and reinforcements required to achieve the optimal desired functionalities. Overall, this review focuses on the adoption and applications of virgin FDM polymers and highlights different virgin polymers and equipment used in 3D and 4D printing. A comparative study on the mechanical and microstructural properties of various FDM polymers is also performed. In addition, this work also covers the state-of-the-art approaches and practices used for 4D printing of polymer-based systems and future directions for this field.

Bad breath, or halitosis, is a common medical condition that affects a significant portion of people worldwide. The cause of it is volatile molecules that might come from extra-oral or oral sources, both diseased and non-pathological. Halitosis can be caused by a variety of other factors, many of which are ignored, although poor dental hygiene is frequently the primary offender. These include disorders associated to the nose, throat, and bodily systems as a whole, which result in a production of odorous gasses released through the mouth. Halitosis can result from a number of illnesses, including tonsillitis, sinusitis, and some systemic conditions. In addition to these illnesses, halitosis can also be caused on by a few drugs and lifestyle behaviors including drinking alcohol and smoking. The majority of people who complain about halitosis seek therapy at a clinic because it has an adverse effect on their daily activities. However, some people with halitosis are not even aware that they have the condition. Numerous methods can be used to determine halitosis. Treatment and management of halitosis effectively require an understanding of its numerous causes. Key words: ENT, etiology, extra-oral, halitosis, pseudohalitosis, systemic

Abstract Background Hypertensive patients are more susceptible to develop hypotension after the induction of general anesthesia (GA), most likely due to hypovolemia. An inferior vena cava collapsibility index (IVCCI) > 40–50% can predict hypotension after the induction of GA in the general population by variable accuracies. The current study aimed to investigate IVCCI% as a predictor of postinduction hypotension in hypertensive patients undergoing noncardiac surgery. Methods Ultrasound IVCCI % was assessed for all controlled hypertensive patients immediately before induction of GA. After induction of GA, patients were diagnosed with postinduction hypotension if their systolic arterial pressure (SAP) dropped by ≥ 30% of the baseline value and/or mean arterial pressure (MAP) dropped to 39% predicted the occurrence of postinduction hypotension with high accuracy (84%) (AUC 0.908, P 39% before anesthetic induction can be a simple noninvasive reliable predictor of hypotension after the induction of GA for hypertensive patients not treated with angiotensin-converting enzyme inhibitors (ACEIs) or angiotensin receptor blockers (ARBs) and undergoing noncardiac surgery. Trial registration This clinical trial was approved by the Institutional Review Board (IRB) at Zagazig University (ZUIRB #9424 dated 03/04/2022), and patients’ informed consent for participation in the study was obtained during the period from May 2022 to May 2023. All study procedures were carried out in accordance with the ethical standards of the Helsinki Declaration of 2013.

Abstract Background: The occurrence of native coronary artery vasospasm after coronary artery bypass grafting (CABG) is a rare phenomenon with potentially catastrophic outcomes. The absence of a clear understanding of contributing factors and an undetermined occurrence rate underscores the importance of coronary angiography as the primary diagnostic tool for this condition. Case Presentation: We present the case of a 70-year-old Asian male with a 14-year history of diabetes mellitus, seven years of Giant Cell Arteritis (GCA), and Ischemic Heart Disease (IHD). The patient experienced severe native coronary artery vasospasm following conventional CABG, prompting intervention through coronary angiography. Management & Results: The patient underwent coronary angiography, revealing multivessel coronary artery vasospasm. Intracoronary administration of nitroglycerin and diltiazem was initiated promptly. The swift identification and treatment of vasospasm were instrumental in preventing severe myocardial injury. Conclusion: Coronary artery vasospasm post-CABG poses a significant threat, emphasizing the need for early identification and intervention. The successful management presented in this case underscores the importance of timely recognition and the administration of vasodilators in mitigating potential myocardial damage. This report contributes to the growing understanding of this rare but critical complication, highlighting the necessity for vigilance in post-CABG patient care.

Abstract This retrospective case–controlled study was performed to evaluate whether Epileptiform Activity, suspected clinical seizures, and/or 2HELPS2B/S after nontraumatic Intraparenchymal Hemorrhage or Subarachnoid Hemorrhage can predict Epilepsy. Hundred and thirty‐two patients were included—29 (Epilepsy), 103 (Control Group). After matching, the average effect for all three risk factors was significant as follows: (1) Epileptiform Activity (p = 0.012, odds ratio 3.14), (2) suspected seizures (p = 0.021, odds ratio 3.78), and (3) 2HELPS2B/S score (p

A series of Eu3+ and Eu2+ doped wollastonite is produced with a modified sol–gel technique using agricultural‐food waste materials. Rice husk ash (RHA) and eggshell (ES) are used as an usher for silica and calcium oxide, appropriately, at different concentrations (0.0, 0.2, 0.4, 0.6, 0.8, and 1 mol%). Most investigations have documented photoluminescence (PL) from Eu3+ ions caused by electronic transitions between 4f levels (5D0 → 7FJ) but there is limited information on emissions from Eu2+ ions. Fourier transform infrared (FTIR) spectra and X‐ray diffraction (XRD) studies reveal that varying amounts of europium ions do not have any effect on the structure of the host. PL spectra display that europium ions exist in both trivalent and divalent forms. A valence change from Eu3+ to Eu2+ ion is investigated using luminescence measurements. As‐prepared Eu3+ activated β‐wollastonite emitted as red and reduction atmosphere using argon gas produced Eu2+ activated phosphor gives off blue light. X‐Ray photoelectron spectroscopy reveals that throughout the processing of the samples, Eu3+ cations are partially reduced to Eu2+ cations in argon gas atmosphere. These findings prove the feasibility of fabricating white light‐emitting diodes (white‐LEDs) for three‐band type (RGB) phosphors utilizing only one host crystal.

Introduction: Diagnosis of extrapulmonary tuberculosis (EPTB) has been challenging owing to its paucibacillary nature and diverse clinical manifestations. Immunohistochemistry (IHC) on biopsy specimens has presented a new perspective toward improving tuberculosis diagnosis. MPT64 is a unique antigen that has shown high sensitivity and specificity compared to other conventional techniques in its ability to diagnose tuberculosis as well as differentiate it from nontubercular mycobacteria. In this study, we aimed to analyze the utility of anti-MPT64 in the diagnosis of EPTB. Methods: In this cross-sectional study, conducted over a period of 1 year, 52 nonrepetitive samples from 52 participants with a presumptive diagnosis of EPTB were collected and processed. The specimens were subjected to Ziehl–Neelsen staining, GeneXpert, tissue culture by mycobacterium growth indicator tube, H and E staining, and IHC with anti-MPT64. The sensitivity and specificity of anti-MPT64 was computed against a composite diagnostic criterion. Results: Fifty-two consecutive participants satisfying the study criteria were recruited. The mean age of the study population was 37.35 ± 18.71 years. Lymph node specimen accounted for majority of the specimen processed (n = 20, 38.5%). The sensitivity of anti-MPT64 in the diagnosis of EPTB was 68.29%, specificity was 90.90%, positive predictive value was 96.55%, and negative predictive value was 43.47%, when composite criteria were considered standard for diagnosis. Conclusion: Immunohistochemical staining by anti-MPT64 is useful in establishing microbiological diagnosis of EPTB on biopsy specimens.

This research work focuses on augmenting the power conversion efficiency of the polycrystalline silicon solar cell with the aid of antireflection coating (ARC) of synthesized molybdenum disulphide (MoS2). The sol-gel technique and electrospraying method were preferred for synthesizing and depositing MoS2 as transparent thin films on the surface of the solar cells. The optical, electrical, structural, and thermal properties of the coated solar cells were analyzed for understanding the influence of the MoS2 coating. Five different samples (A-II, A-III, A-IV, A-V, and A-VI) were coated with varying coating time. Among them, 120 min coated sample experienced a maximum power conversion efficiency (PCE) of 17.96% and 18.82% under direct sunlight and neodymium light with resistivity as low as 2.79×10−3 Ω−cm. The investigation of optical properties of the coated solar cells revealed a maximum transmittance of 93.6% and minimum reflectance of 6.3%, achieved for A-IV sample in the visible UV spectrum. Sample A-IV showed prominent results in the temperature analysis with temperatures as low as 38.9°C in uncontrolled and 43.2°C in controlled source environments. The results from various analyses proved that MoS2 was an appropriate material for an antireflection coating to enhance the performance of polycrystalline solar cell.

Objective: To compare the effects of silymarin and coffee on liver enzymes in acetaminophen-induced hepatotoxicity in rats. Study Design: Experimental-randomized control study. Place and Duration of Study: The research was conducted from October 2018 to October 2019 in Pharmacology Department at IIMCT in mutual collaboration with National Institute of Health (NIH) Islamabad. Material and Methods: At day 0 after initial blood sampling, Acetaminophen (300 mg/kg) by intraperitoneal route was given to 30 rats to induce hepatotoxicity. These rats were further divided into three experimental groups on day 8. Group 2 was a disease control group, Silymarin (100mg/kg) was given to group 3 rats and group 4 rats were treated with Coffee (200 mg/kg) through intragastric gavage for fourteen days. Terminal blood sampling was done at day 21 through cardiac puncture for biochemical estimation on same day. Mean± SEM was calculated and analyzed through SPSS 20. P value less than 0.05 was considered statistically significant. Results: Our results showed major elevation (p

Objective: To evaluate the activity of Ranitidine at neuromuscular junction with and without Pancuronium. Study Design: Experimental randomized control study. Place and Duration of Study: Department of Pharmacology, Islamic International Medical College, RIU Rawalpindi from October 2018 to September 2019. Materials and Methods: Changes in the length (contraction) of rectus abdomininis muscle of frog were recorded using students oscillograph and cumulative dose response curve with Acetylcholine was obtained (control group). The effect of Ranitidine before and after adding Pancuronium was observed using three groups. Statistical analysis of variance (ANOVA) between the groups was performed by using the student’s ‘t’ test and a P-value < 0.05 was considered statistically significant. Results: Ranitidine in a dose of 1mM concentration produced a shift of the curve to the left with mean deviation of 61.5% (SEM ± 20.5) showing an enhancement of effects of Acetylcholine. Ranitidine also produced a shift of the curve to the left in the presence of 1µg Pancuronium with the mean deviation of 104.5% (SEM ± 39.7). The shift was statistically significant (P < 0.05) showing the antagonistic effect of Ranitidine on neuromuscular junction (NMJ) blockers like Pancuronium at this concentration. Conclusion: Ranitidine in a concentration of 1mM increases the effects of Acetylcholine at neuromuscular junction (NMJ) and antagonizes the effects of NMJ blockers like Pancuronium at this concentration.

BACKGROUND & OBJECTIVE: Rats are commonly used in experimental studies as they have a smaller body size, they are easily available, and their genetic profiles are similar to each other as compared to humans. Kidney pathologies are the result of an imbalance between reactive oxygen species and antioxidants. Parsley aqueous extract is rich in polyphenolic contents and has nephroprotective effects. The objective of this study is to observe the effects of ramipril and parsley leaves aqueous extract in gentamicin induced nephrotoxicity. METHODOLOGY: An Experimental study consisting of 40 healthy male albino rats were randomly distributed into two categories after taking samples for baseline values of urea and creatinine: Category 1 consisted of a control group (Group 1) having 10 rats, while category 2 comprised of 30 rats, divided into three experimental groups after being given intraperitoneal injections of gentamicin (80mg/kg) per day. Group 2 was taken as disease control, while group 3 and group 4 were parsley treated and ramipril treated for 28 days, respectively. Biochemical markers (serum urea and creatinine) were done at day 35. SPSS version 22 was applied for Statistical analysis. One-way ANOVA test was used to determine any difference in mean values. Post hoc tuckeys test was applied for multiple comparisons amongst groups. p

Cardiovascular diseases are among the top leading causes of death worldwide. Most of the time, the patients present with no symptoms, or some symptoms resemble other diseases. This makes most cases challenging for physicians and healthcare workers to diagnose. Besides this, most of the time, not diagnosing the patient on time or delay in the start of intervention is the main cause of death in cardiovascular diseases. Proper history and examination can play a crucial role in this part. History taken in properly can help in reaching the diagnosis. Apart from this, it also helps in the start of empirical therapy. This is where most clinicians are lacking. Waiting for the labs is still time-wasting in other health issues, but it can be killing in cardiac patients. Thus the cardiologist needs to start with a good history and then go on with examinations. Then confirm their findings with the proper labs. This narrows down the diagnosis and saves a lot of time. History-taking is the most important clinical step in the management of patients. But most of the time, it is underrated, and most clinicians rely on labs rather than these basic skills. This article thus reviews the importance of history-taking in diagnosing patients with cardiovascular diseases. Besides this, it also addresses how a good history should be taken to narrow down the diagnosis and reach the proper diagnosis within time to save a patient's life.

Chronic Rhinosinusitis (CRS) is a common disease that affects a large percentage of the population, Nasal obstruction, nasal discharge, headache and the decline in quality of life are all symptoms that have social and economic consequences. CRS with nasal polyps is a common problem, it is a subgroup of CRS in which polyps in the middle meatus can be seen. It has a high social impact because of its chronic disease burden. Due to a large number of people with medically refractory rhinosinusitis, it is now widely accepted to use functional endoscopic sinus surgery (FESS) and the number of FESS procedures that are performed has increased. The study aimed to assess nasal polyps in chronic rhinosinusitis patients who underwent FESS. A retrospective study was conducted among patients aged between 18 and 86 years. The clinical records of patients who underwent functional endoscopic sinus surgery over the two years (2019-2020) were carefully reviewed and pertinent information was extracted from the database. Overall, 1671 patients underwent FESS, 1197 of them were for CRS. We found 165 (13.78%) patients with nasal polyps and 1032 (86.21%) of them were without nasal polyps. The study group’s mean age was 38.87±14.74 years. The mean age of patients for CRS with nasal polyps and without nasal polyps was 50.53±16.13 and 37±13.61 years respectively, which was statically significant (χ2 =216.303; p < 0.001). Most of the patients with nasal polyps (43%) were aged between 41-60 years. In the subgroup of CRS with nasal polyp females and males were 79 (47.88%) and 86 (52.12%) respectively. In our study, both CRS with nasal polyps and without nasal polyps showed significant age differences. In CRS with nasal polyp, males were more affected than females. More research is needed to assess demographic variables and outcomes of nasal polyps after FESS.

Chronic suppurative otitis media is a severe health condition that affects people worldwide. Perforation in the tympanic membrane reduces the surface area of the membrane available for sound transmission. It’s important to identify and treat tympanic membrane perforation as soon as possible, since untreated tympanic membrane perforation contributes to chronic disruptive changes in the middle ear, resulting in further hearing loss, which is a major physical and psychological issue that affects people’s lives. The study has been conducted to compare the relationship between the location and size of perforation of the tympanic membrane in chronic suppurative otitis media with the magnitude of hearing loss. The cross-sectional prospective study was conducted among 67 patients who visited the Otorhinolaryngology department for myringoplasty. The study period was from January to April 2021, the age group of patients was between 8 and 43 years old. The number of female participants was 35 (52.2%) and males – 32(47.8%) respectively. Average age ±SD was 21.93±9.47 years. Fifty (74.6%) patients had right ear perforation and seventeen (25.4%) with left ear perforation/ It was not statistically significant (χ2=22.891; p-value=0.290). Most of the patients were with subtotal of (all quadrants) 30 (44.77%), 2-3 quadrants, and one quadrant perforation were 23 (34.32%) and 14 (20.89%) respectively. Most of the patients, i.e.37 (55.22%), had hearing loss between 26-40dB. There was a significant connection between the perforation size and degree of hearing, (χ2=22.891; p-value

The intelligent management of power in electrical utilities depends on the high significance of load forecasting models. Since the industries are digitalized, power generation is supported by a variety of resources. Therefore, the forecasting accuracy of different models varies. The power utilities with different generation modalities (DGM) experience complexities and a noticeable amount of error in predicting future electrical consumption. To effectively manage the power flow with negligible power interruptions, a utility must utilize the forecasting tools to predict the future electricity demand with minimum error. Since the current literature supports individual and limited power sources involved in generation for load forecasting, thus the utilities with multiple power sources or DGM remain unexplored. Therefore, exploration of existing literature is required relating to analyzing the existing models which could be considered in load forecasting for DGM. This paper explores state-of-art methods recently utilized for electrical load forecasting highlighting the common practices, recent advances, and exposure of areas available for improvement. The review investigates the methods, parameters, and respective sectors considered for load forecasting. It performs in-depth analysis and discusses the strengths, weaknesses, and error percentages of models. It also highlights the peculiarities of methods used in residential, commercial, industrial, grid, and off-grid sectors aiming to help the researchers to appraise the common practices. Moreover, trends and research gaps are also discussed.

This novel study emphasizes to compare the properties of 100% cotton fabric printed with pigments and reactive dyes. For this purpose, a bleached cotton fabric was printed in light, medium, and dark shades with pigments and reactive dyes. In terms of fabric comfort properties (stiffness, pilling resistance, crease recovery angle) and tensile strength particularly in deep shades, pigment printing has better results than reactive printing. However, with respect to fabric performance properties (surface friction and tear strength) and rubbing fastness, pigment-printed fabric was found inferior to reactive printed fabric. It was observed that reactive printed fabric exhibits better one way moisture-transmitting capability and overall moisture management capability. Reactive printed fabric exhibits better air permeability as compared to pigment printed fabric. Both reactive and pigment printing have comparable color fastness.

Smart Grid (S.G.) is a digitally enabled power grid with an automatic capability to control electricity and information between utility and consumer. S.G. data streams are heterogenous and possess a dynamic environment, whereas the existing machine learning methods are static and stand obsolete in such environments. Since these models cannot handle variations posed by S.G. and utilities with different generation modalities (D.G.M.), a model with adaptive features must comply with the requirements and fulfill the demand for new data, features, and modality. In this study, we considered two open sources and one real-world dataset and observed the behavior of ARIMA, ANN, and LSTM concerning changes in input parameters. It was found that no model observed the change in input parameters until it was manually introduced. It was observed that considered models experienced performance degradation and deterioration from 5 to 15% in terms of accuracy relating to parameter change. Therefore, to improve the model accuracy and adapt the parametric variations, which are dynamic in nature and evident in S.G. and D.G.M. environments. The study has proposed a novel adaptive framework to overcome the existing limitations in electrical load forecasting models.

Background The 48,XXXY syndrome is a rare sex chromosome aneuploidy, presenting characteristic features such as prominent facial and skeletal malformations, intrauterine growth retardation, and psychomotor retardation. Psychological, endocrinological, auxological issues and orthopedic disorders constitute the major problems in this syndrome, which require long term clinical and biochemical follow-up. Materials and Methods In the present investigation, chromosomal analysis (standard chromosomal karyotyping) and fluorescence in situ hybridization (FISH) was performed according to the standard protocols. Results Here, we report a single affected individual (boy) having Saudi origin, suffering from rare sex chromosomal aneuploidy. The main presenting complaint is the obvious dysmorphic features associated with developmental delay, epicanthal folds, short nose, prominent philtrum, low seated ears, and overlapping toes. Chromosomal analysis and fluorescence in situ hybridization (FISH) revealed an extra two X chromosomes thus causing the 48,XXXY syndrome. Conclusion Patients with facial dysmorphism, developmental delay, unexplained hypotonia and accompanying behavioral disturbances must be tested for sex chromosome aneuploidies. Management and proper diagnosis require a multidisciplinary approach involving pediatric endocrinology, pediatric surgery, orthopedics, psychiatry, and clinical genetic evaluations. Considering 48,XXXY syndrome as a highly severe disorder, cytogenetic tests should be performed as the first diagnostic approach. [JBCGenetics 2018; 1(2.000): 53-56]

BackgroundDiagnosis of TB in pediatric population poses several challenges. A novel initiative was implemented in several major cities of India aimed at providing upfront access to free-of-cost Xpert MTB/RIF to presumptive pediatric TB cases. This paper aims to describe the experience of implementing this large initiative and assess feasibility of the intervention in high TB burden settings.MethodsData were drawn from the pediatric TB project implemented in 10 major cities of India between April 2014 and March 2018. In each city, providers, both public and private, were engaged and linked with a high throughput Xpert MTB/RIF lab (established in that city) through rapid specimen transportation and electronic reporting system. Rates and proportions were estimated to describe the characteristics of this cohort.ResultsOf the total 94,415 presumptive pediatric TB cases tested in the project, 6,270 were diagnosed positive for MTB (6.6%) on Xpert MTB/RIF (vs 2% on smear microscopy). Among MTB positives, 545 cases were rifampicin resistant (8.7%). The median duration between collection of specimens and reporting of results was 0 days (same day) and >89% cases were initiated on treatment. Approximately 50% of the specimens tested were non-sputum. The number of providers/facilities engaged under the project increased >10-fold (from 124 in Q2'14 to 1416 in Q1'18).ConclusionThis project, which was one of the largest initiatives globally among pediatric population, demonstrated the feasibility of sustaining rapid and upfront access to free-of-cost Xpert MTB/RIF testing. The project underscores the efficiency of this rapid diagnostic assay in tackling several challenges in pediatric TB diagnosis, identifies opportunities for further interventions as well as brings to light scope for effective engagement with healthcare providers. The findings have facilitated a policy decision by National TB Programme mandating the use of Xpert MTB/RIF as a primary diagnostic tool for TB diagnosis in children, which is being scaled-up.

In line with the need to better utilize agricultural resources, and valorize underutilized fractions, we have developed protocols to increase the use of wheat bran, to improve utilization of this resource to additional products. Here, we report sequential processing for extraction of starch, lipids, and proteins from wheat brans with two different particle sizes leaving a rest-material enriched in dietary fiber. Mild water-based extraction of starch resulted in maximum 81.7 ± 0.67% yield. Supercritical fluid extraction of lipids by CO2 resulted in 55.2 ± 2.4% yield. This was lower than the corresponding yield using Soxhlet extraction, which was used as a reference method, but allowed a continued extraction sequence without denaturation of the proteins remaining in the raw-material. Alkaline extraction of non-degraded proteins resulted in a yield corresponding to one third of the total protein in the material, which was improved to reach 62 ± 8% by a combination of wheat bran enzymes activation followed by Osborne fractionation. The remaining proteins were extracted in degraded form, resulting in maximum 91.6 ± 1.6% yield of the total proteins content. The remaining material in both fine and coarse bran had a fiber content that on average corresponded to 73 ± 3%. The current work allows separation of several compounds, which is enabling valorization of the bran raw-material into several products.

Background: The effect of revascularization by PCI for acute coronary syndrome (ACS) on the severity of ischemic mitral regurge (IMR) is still unclear. Objective: To evaluate the effect of successful total revascularization by PCI for ACS on the degree of IMR. Methods: A total of 240 patients presenting with ACS for the first time were studied by this an open-label, multicenter, prospective clinical trial between July 2015 to February 2017. All patients were subjected for clinical assessment, transthoracic echocardiographic assessment and coronary angiography. The patients divided into two groups: group A; those who had undergone successful total revascularization of a significant coronary artery disease using PCI, and group B; those who had optimal medical treatment with no total revascularization, failed PCI or for CABG. Group A patients subdivided into subgroup I, patients with improvement of the IMR; and subgroup II, patients with no improvement of IMR. Results: Only 65% of the patients showed IMR and 149 of them underwent successful complete revascularization by PCI; 68% of them showed IMR improvement and 32% showed no improvement. There was a significant improvement of the IMR degree after total revascularization by PCI. Moreover, this improvement was significant in subgroup I (p

In this paper, the authors have developed a hardware model for blocking even and odd harmonics of a power transformer. In the proposed hardware model, intelligent differential & over-current relays are used for the blocking of harmonics of a power transformer. The harmonic restraint function on the differential relay (7UT61) prevents the relay from tripping during transformer magnetizing inrush current. However, the over-current relays which are used for back up protection does not have a harmonic restraint element, and over-current relay trips due to magnetizing inrush current, causes unwanted interruptions and power failures. The establishment of harmonic blocking scheme for over-current protection in power transformers is an important finding of this research study. IEC61850 standard-Based GOOSE (Generic Object Oriented Substation Event) applications used in power transformer protection for fast detecting and clearing of faults is an interested study presented in the proposed work.

Friction stir processing (FSP) technology has received reasonable attention in the past two decades to process a wide range of materials such as aluminum, magnesium, titanium, steel, and superalloys. Due to its thermomechanical processing nature, FSP is used to alter grain structure and enhance mechanical and corrosion behavior in a wide range of steels. The refinement in grains and phase transformations achieved in steel after FSP affects hardness, tensile properties, fracture toughness, fatigue crack propagation rate, wear resistance, and corrosion resistance. A number of review papers are available on friction stir welding (FSW) or FSP of nonferrous alloys. In this article, a comprehensive literature review on the FSP/FSW of different types of steels is summarized. Specifically, the influence of friction stir processing parameters such as advancing speed, rotational speed, tool material, etc., on steels’ performance is discussed along with assessment methodologies and recommendations.

BACKGROUND: Being a natural phenomenon, the knowledge learned by students is quickly forgotten. However, various factors are pertinent for one’s memory and knowledge retention ability. This ability is not investigated earlier among pass and fail students of a particular exam. OBJECTIVES: To determine and compare short term memory and Knowledge retention ability among pass and fail students of mid-term exam. METHODS: 103 first-year MBBS students were examined in 3 cycles after result of mid-term examination announced. These cycles consisted of 2 components related with short term memory (1st & 2nd cycles) & knowledge retention ability (3rd cycle) with one week duration apart. RESULTS: Class attendance of pass, fail and absentees groups demonstrated statistically significant (P fail > absentees and significant correlation with marks obtained. A comparison between short term memory & knowledge retention ability also demonstrated statistically significant (P

With the present demand on fast and inexpensive aerosol source apportionment methods, the Aethalometer model was evaluated for a full seasonal cycle (June 2014–June 2015) at a rural atmospheric measurement station in southern Sweden by using radiocarbon and levoglucosan measurements. By utilizing differences in absorption of UV and IR, the Aethalometer model apportions carbon mass into wood burning (WB) and fossil fuel combustion (FF) aerosol. In this study, a small modification in the model in conjunction with carbon measurements from thermal–optical analysis allowed apportioned non-light-absorbing biogenic aerosol to vary in time. The absorption differences between WB and FF can be quantified by the absorption Ångström exponent (AAE). In this study AAEWB was set to 1.81 and AAEFF to 1.0. Our observations show that the AAE was elevated during winter (1.36 ± 0.07) compared to summer (1.12 ± 0.07). Quantified WB aerosol showed good agreement with levoglucosan concentrations, both in terms of correlation (R2 = 0. 70) and in comparison to reference emission inventories. WB aerosol showed strong seasonal variation with high concentrations during winter (0.65 µg m−3, 56 % of total carbon) and low concentrations during summer (0.07 µg m−3, 6 % of total carbon). FF aerosol showed less seasonal dependence; however, black carbon (BC) FF showed clear diurnal patterns corresponding to traffic rush hour peaks. The presumed non-light-absorbing biogenic carbonaceous aerosol concentration was high during summer (1.04 µg m−3, 72 % of total carbon) and low during winter (0.13 µg m−3, 8 % of total carbon). Aethalometer model results were further compared to radiocarbon and levoglucosan source apportionment results. The comparison showed good agreement for apportioned mass of WB and biogenic carbonaceous aerosol, but discrepancies were found for FF aerosol mass. The Aethalometer model overestimated FF aerosol mass by a factor of 1.3 compared to radiocarbon and levoglucosan source apportionment. A performed sensitivity analysis suggests that this discrepancy can be explained by interference of non-light-absorbing biogenic carbon during winter. In summary, the Aethalometer model offers a cost-effective yet robust high-time-resolution source apportionment at rural background stations compared to a radiocarbon and levoglucosan alternative.

In this article, we report the development of a polyacrylonitrile-graphene oxide-silicon dioxide (PAN-GO-SiO2) hybrid membrane for separation of oil and water from their emulsified mixture. The membrane was successfully fabricated using a one-step electrospinning process. GO and SiO2 nanofillers were added in PAN in different concentrations to determine the optimized composition for the PAN-GO-SiO2 hybrid membrane. A scanning electron microscopy (SEM) examination showed that the nanofillers were uniformly embedded in the nanofibrous structure of the electrospun hybrid membrane. The GO was mainly embedded inside the PAN nanofibers, causing knots while SiO2 nanoparticles were found embedded on the nanofiber surface, resulting in the formation of micro-nano protrusions on the fiber surface. The formation of these hierarchical structures, together with enhanced hydrophilicity due to oxygen containing groups on both SiO2 and GO, resulted in a high rejection (>99%) of oil from oil-water emulsion. Membrane performance evaluation under gravity separation tests showed that the separation flux and phase rejection was enhanced with the incorporation of nanofillers. The inclusion of nanofillers also enhanced the mechanical properties of the membrane. The best flux and phase separation performance was obtained for an optimized concentration of 7.5 wt % SiO2 and 1.5 wt % GO in PAN. The flux of separated water was enhanced from 2600 L m−2 h−1 for pristine PAN to 3151 L m−2 h−1 for PAN-GO-SiO2. The hybrid membrane also showed good mechanical and chemical stability, and antifouling propensity.