Comparative analysis of AC and DC distribution system with respect to harmonic distortion considering daily load profile

Electrical energy is the most efficient and the cleanest form of energy at the moment that is being transmitted and distributed amongst end-users. From its earlier days, the AC system was preferred as an economical solution for transmission and distribution. However, the development in the power electronics technology and the evolution of highly efficient power electronic converters have established the resurgence of DC power system. Furthermore, the trend is shifting towards DC loads as various energy efficient appliances, such as DC inverter air conditioners, operate on DC nowadays. This further advocates the shift towards the DC power system. This research works is an effort to perform the comparative analysis of AC Distribution System (ACDS) and DC Distribution System (DCDS), with regards to power quality and harmonic distortion in particular. The comparison is performed considering load profile and load variation on daily basis. Simulations are performed in MATLAB. It has been concluded at the end that ACDS is better than DCDS in terms of power quality as total harmonic distortion of the DCDS under the same loading and same load variation during the whole day was significantly higher than that of ACDS

Evaluation of disaster medicine preparedness among healthcare profession students: A cross-sectional study in pakistan

Background: Disasters are devastating incidents, especially when occurring suddenly and causing damage, great loss of life, or suffering. Disasters can affect health and the social and economic development of a nation. The article analyzes the knowledge (K), attitude (A), and readiness to practice (rP) of healthcare professional students in universities in Pakistan. Methods: We carried out a cross-sectional study using a pretested and validated self-administered disaster medicine and preparedness questionnaire. The study recruited 310 students. Responses were scored and categorized as high (75th quartile), moderate (75–25th quartiles), and low (25th quartile). Independent t-test, one-way ANOVA, Pearson correlation, and regression analyses were performed at an alpha level of 0.05. Results: The study found that most of the students had moderate knowledge, attitude, readiness to practice, and total KArP scores. All K, A, and rP scores were significantly correlated with overall KArP scores. Knowledge and attitude factors were significant predictors of readiness to practice. Conclusions: We strongly believe that educators and health policymakers should build a strong curriculum in disaster medicine management and preparedness to prepare competent future healthcare professionals for the nation.This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors. The publication of this article was funded by the Qatar National Library

Perspective of key healthcare professionals on antimicrobial resistance and stewardship programs: A multicenter cross-sectional study from Pakistan

Copyright © 2020 Hayat, Rosenthal, Gillani, Chang, Ji, Yang, Jiang, Zhao and Fang. Background: Antimicrobial resistance (AMR) is an increasing global threat, and hospital-based antimicrobial stewardship programs (ASPs) are one of the effective approaches to tackle AMR globally. This study was intended to determine the attitude of key healthcare professionals (HCPs), including physicians, nurses, and hospital pharmacists, towards AMR and hospital ASPs. Methods: A cross-sectional study design was used to collect data from HCPs employed in public teaching hospitals of Punjab, Pakistan, from January 2019 to March 2019. A cluster-stratified sampling method was applied. Descriptive statistics, Mann Whitney and Kruskal Wallis tests were used for analysis. Results: A response rate of 81.3% (881/1083) for the surveys was obtained. The majority of the physicians (247/410, 60.2%) perceived AMR to be a serious problem in Pakistani hospitals (p \u3c 0.001). Most of the HCPs considered improving antimicrobial prescribing (580/881, 65.8%; p \u3c 0.001) accompanied by the introduction of prospective audit with feedback (301/881, 75.8%; p \u3c 0.001), formulary restriction (227/881, 57.2%; p = 0.004) and regular educational activities (300/881, 75.6%; p = 0.015) as effective ASP methods to implement hospital ASPs in Pakistan. A significant association was found between median AMR and ASP scores with age, years of experience, and types of HCPs (p \u3c 0.05). Conclusions: The attitude of most of the HCPs was observed to be positive towards hospital-based ASPs regardless of their poor awareness about ASPs. The important strategies, including prospective audit with feedback and regular educational sessions proposed by HCPs, will support the initiation and development of local ASPs for Pakistani hospitals

Perspective of Pakistani physicians towards hospital antimicrobial stewardship programs: A multisite exploratory qualitative study

© 2019 Raha Orfali et al. Plicosepalus is an important genus of the Loranthaceae family, and it is a semiparasitic plant grown in Saudi Arabia, traditionally used as a cure for diabetes and cancer in human and for increasing lactation in cattle. A flavonoid quercetin (P1), (-)-catechin (P2), and a flavane gallate 2S,3R-3,3′,4′,5,7-pentahydroxyflavane-5-O-gallate (P3) were isolated from the methanol extract of the aerial parts of P. curviflorus (PCME). The PCME and the isolated compounds were subjected to pharmacological assays to estimate peroxisome proliferator-activated receptors PPARα and PPARγ agonistic, anti-inflammatory, cytotoxic, and antimicrobial activities. Results proved for the first time the dual PPAR activation effect of the PCME and catechin (P2), in addition to the promising anti-inflammatory activity of the flavonoid quercetin (P1). Interestingly, both PCME and isolated compounds showed potent antioxidant activities while no antimicrobial effect against certain microbial strains had been reported from the extract and the isolated compounds. Based on the pharmacological importance of these compounds, an HPTLC validated method was developed for the simultaneous estimation of these compounds in PCME. It was found to furnish a compact and sharp band of compounds P1, P2, and P3 at Rf = 0.34, 0.47, and 0.65, respectively, using dichloromethane, methanol, and formic acid (90: 9.5: 0.5, (v/v/v)) as the mobile phase. Compounds P1, P2, and P3 were found to be 11.06, 10.9, 6.96 μg/mg, respectively, in PCME. The proposed HPTLC method offers a sensitive, precise, and specific analytical tool for the quantification of quercetin, catechin, and flavane gallates in P. curviflorus

Effectiveness of the Administrative Performance of Directly Selected Executive District Officers in Elementary and Secondary Education of KHYBER PUKHTUNKHWA PAKISTAN

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Herd Immunity against Severe Acute Respiratory Syndrome Coronavirus 2 Infection in 10 Communities, Qatar.

We investigated what proportion of the population acquired severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and whether the herd immunity threshold has been reached in 10 communities in Qatar. The study included 4,970 participants during June 21-September 9, 2020. Antibodies against SARS-CoV-2 were detected by using an electrochemiluminescence immunoassay. Seropositivity ranged from 54.9% (95% CI 50.2%-59.4%) to 83.8% (95% CI 79.1%-87.7%) across communities and showed a pooled mean of 66.1% (95% CI 61.5%-70.6%). A range of other epidemiologic measures indicated that active infection is rare, with limited if any sustainable infection transmission for clusters to occur. Only 5 infections were ever severe and 1 was critical in these young communities; infection severity rate of 0.2% (95% CI 0.1%-0.4%). Specific communities in Qatar have or nearly reached herd immunity for SARS-CoV-2 infection: 65%-70% of the population has been infected

A Qualitative Study Exploring the Management of Medicine Shortages in the Community Pharmacy of Pakistan

Managing medicine shortages consumes ample time of pharmacists worldwide. This study aimed to explore the strategies and resources being utilized by community pharmacists to tackle a typical shortage problem. Qualitative face-to-face interviews were conducted. A total of 31 community pharmacists from three cities (Lahore, Multan, and Dera Ghazi Khan) in Pakistan were sampled, using a purposive approach. All interviews were audio taped, transcribed verbatim, and subjected to thematic analysis. The analysis yielded five broad themes and eighteen subthemes. The themes highlighted (1) the current scenarios of medicine shortages in a community setting, (2) barriers encountered during the shortage management, (3) impacts, (4) corrective actions performed for handling shortages and (4) future interventions. Participants reported that medicine shortages were frequent. Unethical activities such as black marketing, stockpiling, bias distribution and bulk purchasing were the main barriers. With respect to managing shortages, maintaining inventories was the most common proactive approach, while the recommendation of alternative drugs to patients was the most common counteractive approach. Based on the findings, management strategies for current shortages in community pharmacies are insufficient. Shortages would continue unless potential barriers are addressed through proper monitoring of the sale and consumption of drugs, fair distribution, early communication, and collaboration

Iran Counseling at Workplace: An emerging Human Resource Management Practice

Abstract: Employees are the strongest pillars of any organization. They can play an effective role in building any organization. However, sometimes antagonistic views, alleged reluctance, and angry protestations of the workers / employees may lead to the destruction of the whole infrastructure of any organization. There are no doubt many reasons of workers of not being able to perform up to the mark on personal, social, psychological, professional and interpersonal grounds. However, immediate and consistent counseling, guidance and mentoring can attract the anticipated attention of the employees. The present study throws lights on the concept, importance and the theoretical framework of counseling. It is an axiomatic truth that workers, if interested and motivated well, can bring forth prosperity and integrity in any organization. And, counseling is the very effective tool to invoke interest and motivation among employees

Antibiotic Self-Medication among Non-Medical University Students in Punjab, Pakistan: A Cross-Sectional Survey

Background: Antibiotic resistance is a global threat. Scarce knowledge about safe and appropriate antibiotic use is coupled with frequent self-administration, e.g., in China. This repeated self-medication poses potential risk in terms of antibiotic resistance. Low-resource countries are facing an elevated burden of antibiotic self-medication as compared to developed ones. Thus, this study focused on evaluating the pervasiveness of antibiotic self-medication in 3 universities of Southern Punjab, Pakistan. Methods: We conducted a descriptive cross-sectional survey in three government sector universities of Southern Punjab, Pakistan. The study was carried out with self-administered paper-based questionnaires. Data was analyzed using SPSS version 18.0 (IBM, Chicago, IL, USA). Results: Seven hundred twenty-seven students out of 750 (response rate 97%) with a mean age ± SD of 23.0 ± 3.4 years agreed to participate in the study. The proportion of females was slightly greater (52%) compared with males (48%), and almost one-third of the respondents (36%) were in their 2nd year of university. Out of the total, 58.3% practiced self-medication in the preceding six months, and 326 (45%) confirmed the use of antibiotics. Metronidazole was the most frequently self-medicated antibiotic (48%). Out of the total, 72% demonstrated awareness regarding the side effects of antibiotics. Diarrhea was the well-known adverse effect (38%). Forty-three percent affirmed having antibiotic resistance knowledge, and 30% knew that the irregular use of antibiotics would lead to increased antibiotic resistance. Conclusion: Despite having ample awareness of the adverse antibiotic reactions, self-medication among the university students was high and antibiotic resistance was a fairly unknown term

Should We Focus More on Teaching and Training Disaster Management in Health-care Colleges? An Insight into the Students' Knowledge, Attitude, and Readiness to Practice.

The critical aspects of risk management for students are providing knowledge, building positive attitudes, and readiness to practice. Our study aimed to assess Chinese health-care university students' knowledge (K), attitude (A), and readiness to practice (rP) regarding disaster medicine and preparedness. A survey was carried out using a self-administered disaster medicine and preparedness questionnaire. Three main outcome measures were K (22 items), A (16 items), and rP (11 items). Responses were scored and classified as high, moderate, and low. Descriptive and inferential statistics were performed for data analysis. A total of 769 valid questionnaires were collected. The associations between K, A, and rP scores was significant, i.e., K-A scores ( = 0.449, = 0.000), K-rP scores (r = 0.312, = 0.000), and A-rP scores ( = 0.656, = 0.000). Multiple linear regression analysis indicated direct low-to-moderate effects of gender, age, attitude, and knowledge on readiness to practice ( = 0.198; < 0.001). The study discovered that most of the students had a moderate level of knowledge, moderate level of attitude, high level of readiness to practice, and a moderate level of total KArP. K, A, and rP were significantly correlated, and K and A were predictors for rP among the health-care students. The findings indicate the importance of health-care colleges for building students' knowledge, attitudes, and readiness to practice disaster medicine and preparedness before joining the profession