22 research outputs found
كروس رف والبيانات الوصفية: رؤى متقدمة (Crossref and Metadata: Advanced Insights)
No full textتُستخدم بيانات كروسريف الوصفية في خدمات مثل أنظمة تتبع المخطوطات وخدمات البحث وبرامج الإدارة الببليوغرافية وأنظمة المكتبات وأدوات تحديد سمات المؤلفين وقواعد بيانات الموضوعات المتخصصة وشبكات المشاركة العلمية وغيرها. انضم إلينا لإلقاء نظرة معمقة على البيانات الوصفية التي يمكن تسجيلها معنا، بما في ذلك إلقاء نظرة على أداة تقارير المشاركة الخاصة بنا حيث يمكنك/ي تحديد أي فجوات في البيانات الوصفية الخاصة بك
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Experimental investigation of new compound adsorption on carbon steel in 1M HCl
No full text117-123The effect of new compounds named, 6,6'-(((2,2-dimethylpropane-1,3-diyl)bis(azanediyl))bis(methylene))bis(2-
methoxyphenol) (RSH) on the corrosion inhibiting of ST- 37 low carbon steel in 1.0 M HCl has been studied. The inhibitor
effects on the corrosion behaviour of the samples have been determined at three different concentrations, 0.5, 1.0, 1.5 and
2.0 mg/L. Weight loss, polarization curves, AC impedance measurements and Atomic Force Microscopy (AFM) have been
utilized to study the corrosion behaviour of carbon steel in corrosive environment in the presence and absence of new ligand.
Results show that the inhibition occurs through adsorption of the inhibitors molecules on the metal surface. The inhibition
efficiency was found to increase with increasing inhibitor’s concentration. Polarization data indicated that this compounds
act as mixed-type inhibitors. The corrosion efficiency of RSH at an optimal concentration of 2mg/L is 86. The adsorption of
inhibitors follows the Langmuir isotherm. The values of free energy of adsorption in the presence of the corrosion inhibitor
are around -32 KJmol-1, which indicate chemiosorption of the molecules. Powerful Atomic Force microscopy is used for the
surface morphology studies
Global 30-Day Morbidity and Mortality of Primary Bariatric Surgery Combined With Another Procedure: the Blend Study
No full textBackground: No robust data are available on the safety of primary bariatric and metabolic surgery (BMS) alone compared to primary BMS combined with other procedures. Objectives: The objective of this study is to collect a 30-day mortality and morbidity of primary BMS combined with cholecystectomy, ventral hernia repair, or hiatal hernia repair. Setting: This is as an international, multicenter, prospective, and observational audit of patients undergoing primary BMS combined with one or more additional procedures. Methods: The audit took place from January 1 to June 30, 2022. A descriptive analysis was conducted. A propensity score matching analysis compared the BLEND study patients with those from the GENEVA cohort to obtain objective evaluation between combined procedures and primary BMS alone. Results: A total of 75 centers submitted data on 1036 patients. Sleeve gastrectomy was the most commonly primary BMS (N = 653, 63%), and hiatal hernia repair was the most commonly concomitant procedure (N = 447, 43.1%). RYGB accounted for the highest percentage (20.6%) of a 30-day morbidity, followed by SG (10.5%). More than one combined procedures had the highest morbidities among all combinations (17.1%). Out of overall 134 complications, 129 (96.2%) were Clavien-Dindo I–III, and 4 were CD V. Patients who underwent a primary bariatric surgery combined with another procedure had a pronounced increase in a 30-day complication rate compared with patients who underwent only BMS (12.7% vs. 7.1%). Conclusion: Combining BMS with another procedure increases the risk of complications, but most are minor and require no further treatment. Combined procedures with primary BMS is a viable option to consider in selected patients following multi-disciplinary discussion. Graphical Abstract: (Figure presented.) © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2024.Hamoud Subhi Zahi Al-issawi Hamza Al-Naggar Hamzeh Ibrahim Al-Qazakzeh Manar Al-Shami Omer Al-Taan Nadeem Bilal Alabdallah Nigar Allahverdiyeva Aiman Nuri Allawgalli Marwa Aloulou Bourhan Mohammad Hassan Alrayes Entisar Ahmed Alshareea Ahmad Malek Alsheikh Patrícia F.N. Amaral Ahmed Y Ammar Luciano Antozzi Ahmad Yamen Arnaout Jabra Arraf Aiman Assaf Ali Awad Sajeda Awadi; Leon Ballesteros Jonathan Abraham Demma Angel Diaz Agron Dogjani Anne Sophie Dulac Agustin Duro Mohamad Hayssam ElFawal; Mahafdah Ahmed Salah Mahdi Ravikrishna Mamidanna Gad Amram Marom Ruqaya Masri Jean Claude Mbonicura Adnan Mohammed Vasilios Mousafeiris Norberto Muñoz Montes Celso Nabais Mohannad Nasani Pueya Abdulrashid Nashidengo Ionut Negoi Negoi Aleksandr Neimark Mourad Niazi Abdallah Omari Mouaqit Ouadii Mehmet Faik Özçelik Mahir Ozmen Mykola Paranyak Chetan Parmar Giovanna Pavone Plamen Petkov Tadeja Pintar Yashasvi Rajeev Gopi Ramu Fahd S Saleh Prashant H Salvi Cláudia S.F. Santos Varun Sarodaya Mohammad Ahmad Sawaftah Marah Ahmad Sawaftah Mohamad Nabhan Sawas Asim Shabbir Azhar Shabbir Aamir Shahzad; Kimutai Ronoh Sylvester Safwan Taha Samuel Tay Pinky M Thapar Anisse Tidjane Carlos T. Toro-Huamanchumo Elena Ruiz Úcar Muhammad Burhan Ulhaq Server Sezgin Uludağ Octavio Viveiros Kelvin Voon Maciej Walędziak Haowei Wang Cacio Ricardo Wietzycoski Bryan Yeoh Sercan Yüksel Hussein Zayat Kağan Zengin Mauricio Zuluaga Homayoon Federico Pint
Depression, Anxiety, and Stress Among Patients with COVID-19: A Cross-Sectional Study
Get PDF© 2021, The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland AG. Aim: Patients with confirmed COVID-19 infection can develop several psychological consequences. Epidemiological data on mental health and psychological disorder inpatients infected with COVID-19 pneumonia are not available in Iranian patients. The purpose of this study was to evaluate the anxiety, stress, and depression of patients with COVID-19. Material and Methods: This cross-sectional survey was conducted in 2020. All confirmed patients with COVID-19 were included in the study by census sampling. Assessment of depression, stress, and anxiety was performed using the DASS-21 questionnaire. All statistical analyses were performed using R version 3.5.1. Results: The questionnaires were completed by 221 patients with COVID-19 infection (204 males, 17 females). The mean age was 45.90 ± 7.73 years. Our results indicated that the mean scores of depression and anxiety were at “extremely severe” levels, while stress levels were “severe.” The prevalence of “extremely severe” symptoms of depression and anxiety was 54.29% and 97.29%, respectively. The prevalence of severe stress was 46.61%. Conclusion: In this study, patients infected with COVID-19 reported severe and extremely severe experience psychological distress. Further studies should focus on the combined use of psychological and molecular biomarker testing to increase accuracy. Overall, the findings demonstrate the necessity of special intervention programs for the confirmed patients with emerging infectious disease COVID-19 to promote mental health needs
Author Correction: Mapping local patterns of childhood overweight and wasting in low- and middle-income countries between 2000 and 2017
No full textExperimental investigation of new compound adsorption on carbon steel in 1M HCl
Get PDFThe effect of new compounds named, 6,6'-(((2,2-dimethylpropane-1,3-diyl)bis(azanediyl))bis(methylene))bis(2- methoxyphenol) (RSH) on the corrosion inhibiting of ST- 37 low carbon steel in 1.0 M HCl has been studied. The inhibitor effects on the corrosion behaviour of the samples have been determined at three different concentrations, 0.5, 1.0, 1.5 and 2.0 mg/L. Weight loss, polarization curves, AC impedance measurements and Atomic Force Microscopy (AFM) have been utilized to study the corrosion behaviour of carbon steel in corrosive environment in the presence and absence of new ligand. Results show that the inhibition occurs through adsorption of the inhibitors molecules on the metal surface. The inhibition efficiency was found to increase with increasing inhibitor’s concentration. Polarization data indicated that this compounds act as mixed-type inhibitors. The corrosion efficiency of RSH at an optimal concentration of 2mg/L is 86. The adsorption of inhibitors follows the Langmuir isotherm. The values of free energy of adsorption in the presence of the corrosion inhibitor are around -32 KJmol-1, which indicate chemiosorption of the molecules. Powerful Atomic Force microscopy is used for the surface morphology studies
Exploring the cost-effectiveness of high versus low perioperative fraction of inspired oxygen in the prevention of surgical site infections among abdominal surgery patients in three low- and middle-income countries
No full textBackground: This study assessed the potential cost-effectiveness of high (80–100%) vs low (21–35%) fraction of inspired oxygen (FiO2) at preventing surgical site infections (SSIs) after abdominal surgery in Nigeria, India, and South Africa. Methods: Decision-analytic models were constructed using best available evidence sourced from unbundled data of an ongoing pilot trial assessing the effectiveness of high FiO2, published literature, and a cost survey in Nigeria, India, and South Africa. Effectiveness was measured as percentage of SSIs at 30 days after surgery, a healthcare perspective was adopted, and costs were reported in US dollars (216 compared with 6 (95% confidence interval [CI]: −1) difference in costs. In India, the average cost for high FiO2 was 195 for low FiO2 leading to a −15 to −1164 compared with 93 (95% CI: −65) difference in costs. The high FiO2 arm had few SSIs, 7.33% compared with 8.38% for low FiO2, leading to a −1.05 (95% CI: −1.14 to −0.90) percentage point reduction in SSIs. Conclusion: High FiO2 could be cost-effective at preventing SSIs in the three countries but further data from large clinical trials are required to confirm this. © 2023 The Author
Author Correction: Mapping local patterns of childhood overweight and wasting in low- and middle-income countries between 2000 and 2017 (Nature Medicine, (2020), 26, 5, (750-759), 10.1038/s41591-020-0807-6)
No full textAn amendment to this paper has been published and can be accessed via a link at the top of the paper
Controversy and Consensus on the Management of Elevated Sperm DNA Fragmentation in Male Infertility: A Global Survey, Current Guidelines, and Expert Recommendations
No full textPurpose: Sperm DNA fragmentation (SDF) has been associated with male infertility and poor outcomes of assisted reproductive technology (ART). The purpose of this study was to investigate global practices related to the management of elevated SDF in infertile men, summarize the relevant professional society recommendations, and provide expert recommendations for managing this condition. Materials and Methods: An online global survey on clinical practices related to SDF was disseminated to reproductive clinicians, according to the CHERRIES checklist criteria. Management protocols for various conditions associated with SDF were captured and compared to the relevant recommendations in professional society guidelines and the appropriate available evidence. Expert recommendations and consensus on the management of infertile men with elevated SDF were then formulated and adapted using the Delphi method Results: A total of 436 experts from 55 different countries submitted responses. As an initial approach, 79.1% of reproductive experts recommend lifestyle modifications for infertile men with elevated SDF, and 76.9% prescribe empiric antioxidants. Regarding antioxidant duration, 39.3% recommend 4-6 months and 38.1% recommend 3 months. For men with unexplained or idiopathic infertility, and couples experiencing recurrent miscarriages associated with elevated SDF, most respondents refer to ART 6 months after failure of conservative and empiric medical management. Infertile men with clinical varicocele, normal conventional semen parameters, and elevated SDF are offered varicocele repair immediately after diagnosis by 31.4%, and after failure of antioxidants and conservative measures by 40.9%. Sperm selection techniques and testicular sperm extraction are also management options for couples undergoing ART. For most questions, heterogenous practices were demonstrated. Conclusions: This paper presents the results of a large global survey on the management of infertile men with elevated SDF and reveals a lack of consensus among clinicians. Furthermore, it demonstrates the scarcity of professional society guidelines in this regard and attempts to highlight the relevant evidence. Expert recommendations are proposed to help guide clinicians. © The Author(s), 2023
Mapping disparities in education across low- and middle-income countries
Get PDFEducational attainment is an important social determinant of maternal, newborn, and child health1–3. As a tool for promoting gender equity, it has gained increasing traction in popular media, international aid strategies, and global agenda-setting4–6. The global health agenda is increasingly focused on evidence of precision public health, which illustrates the subnational distribution of disease and illness7,8; however, an agenda focused on future equity must integrate comparable evidence on the distribution of social determinants of health9–11. Here we expand on the available precision SDG evidence by estimating the subnational distribution of educational attainment, including the proportions of individuals who have completed key levels of schooling, across all low- and middle-income countries from 2000 to 2017. Previous analyses have focused on geographical disparities in average attainment across Africa or for specific countries, but—to our knowledge—no analysis has examined the subnational proportions of individuals who completed specific levels of education across all low- and middle-income countries12–14. By geolocating subnational data for more than 184 million person-years across 528 data sources, we precisely identify inequalities across geography as well as within populations. © 2019, The Author(s)
