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Rare earth based MgPm_(2)X_(4)(X=S,Se) spinel chalcogenides for spintronic and thermoelectric applications

Journal of Rare Earths 2024年第8期42卷 1577-1585,I0006页

作者： Tariq M.Al-Daraghmeh omar zayed Ghulam M.Mustafa Taharh Zelai Bisma Younas Hind Albalawi S.Bouzgarrou Othman Hakami Q.Mahmood Khaild I.Hussein Basic Sciences Department King Abdullah II School of EngineeringPrincess Sumaya University For TechnologyPO.Box 1438Al-jubaiha11941AmmanJordan Department of Physics Division of Science&TechnologyUniversity of EducationLahorePakistan Department of Physics Faculty of ScienceJazan University JazanSaudi Arabia Department of Physics The University of LahoreLahorePakistan Department of Physics College of SciencesPrincess Nourah bint Abdulrahman University(PNU)PO.Box 84428Riyadh11671Saudi Arabia Department of Physics College of ScienceQassim UniversityPo.64BuraidahSaudi Arabia Laboratoire de Microelectronique et Instrumentation(UR 03/13-04)Faculte des Sciences de Monastir Avenue de I'Environnement 5000MonastirTunisia Department of Chemistry Faculty of ScienceJazan University JazanSaudi Arabia Basic&Applied Scientifc Research Center Department of PhysicsCollege of ScienceImam Abdulrahman Bin Faisal UniversityPO.Box 1982Dammam 31441Saudi Arabia Department of Radiological Sciences College of Applied Medical SciencesKing Khalid UniversityAbha61421Saudi Arabia

In current report,the structural,magnetic,and thermoelectric properties of RE doped MgPm_(2)X_(4)(X=S,Se) spinels were *** energy difference in ferromagnetic and antiferromagnetic states reveals the stability of MgPm_(2)(S/Se)_(4) in the ferromagnetic *** co mputation of enthalpy of formation also ascertains thermodynamic stability of crystal ***-dependent band structure and density of states analysis reveal ferromagnetic semiconducting character showing different electronic behavior in both spin *** room temperature ferromagnetism,spin polarization and Curie temperature are estimated from exchange energies *** addition,exchange constants(N_(0)α and N_(0)β),exchange energy Δ_(x)(pd),crystal ifeld energy,and double exchange mechanism were studied to explore the magnetic ***,the electrical conductivity,thermal conductivity,Seebeck co-efficient,and power factor show effect on electrons spin and their potential for thermoelectric devices.

关键词： Rare earth elements Spintronic applications Thermoelectric effects Exchange energies

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The LRXs-RALFs-FER module controls plant growth and salt stress responses by modulating multiple plant hormones

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National Science Review 2021年第1期8卷 40-55页

作者： Chunzhao Zhao Wei Jiang omar zayed Xin Liu Kai Tang Wenfeng Nie Yali Li Shaojun Xie Yuan Li Tiandan Long Linlin Liu Yingfang Zhu Yang Zhao Jian-Kang Zhu Shanghai Center for Plant Stress Biology and Center of Excellence in Molecular Plant Sciences Chinese Academy of Sciences Department of Horticulture and Landscape Architecture Purdue University Key laboratory of Plant Stress Biology School of Life SciencesHenan University National Center for Soybean Improvement Key Laboratory of Biology and Genetics and Breeding for Soybean Ministry of Agriculture State Key Laboratory of Crop Genetics and Germplasm Enhancement Nanjing Agricultural University Genetics Department Faculty of AgricultureMenofia University University of the Chinese Academy of Sciences State Key Laboratory of Plant Physiology and Biochemistry College of Biological SciencesChina Agricultural University State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China Sichuan Agricultural University

Salt stress is a major environmental factor limiting plant growth and productivity. We recently discovered an important new salt tolerance pathway, where the cell wall leucine-rich repeat extensins LRX3/4/5, the RAPID ALKALINIZATION FACTOR (RALF) peptides RALF22/23 and receptor-like kinase FERONIA(FER) function as a module to simultaneously regulate plant growth and salt stress tolerance. However, the intracellular signaling pathways that are regulated by the extracellular LRX3/4/5-RALF22/23-FER module to coordinate growth, cell wall integrity and salt stress responses are still unknown. Here, we report that the LRX3/4/5-RALF22/23-FER module negatively regulates the levels of jasmonic acid (JA), salicylic acid(SA) and abscisic acid (ABA). Blocking JA pathway rescues the dwarf phenotype of the lrx345 and fer-4mutants, while disruption of ABA biosynthesis suppresses the salt-hypersensitivity of these mutants. Many salt stress-responsive genes display abnormal expression patterns in the lrx345 and fer-4 mutants, as well as in the wild type plants treated with epigallocatechin gallate (EGCG), an inhibitor of pectin methylesterases,suggesting cell wall integrity as a critical factor that determines the expression pattern of stress-responsive genes. Production of reactive oxygen species (ROS) is constitutively increased in the lrx345 and fer-4mutants, and inhibition of ROS accumulation suppresses the salt-hypersensitivity of these ***, our work provides strong evidence that the LRX3/4/5-RALF22/23-FER module controls plant growth and salt stress responses by regulating hormonal homeostasis and ROS accumulation.

关键词： salt stress cell wall integrity growth LRX RALF FER hormone

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A multidisciplinary approach to sphincter pharyngoplasty for correction of velopharyngeal dysfunction following repair of cleft palate

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Chinese Journal Of Plastic and Reconstructive Surgery 2022年第3期4卷 105-109页

作者： Nabil Mokhter Mohamed Ahmed Mohamed zayed Ayman Mohamed Amer Ahmed Hassan El-Sabbagh omar Osama Shouman Plastic Surgery Center Faculty of MedicineMansoura UniversityMansoura 35516Egypt Phoniatric Unit Department of ENTFaculty of MedicineMansoura UniversityMansoura 35516Egypt

Background:Management of severe velopharyngeal dysfunction is best performed by a multispecialty *** team could include a speech-language pathologist,otolaryngologist,prosthodontist,and a plastic *** most commonly performed surgical procedures in complicated cases with scarred soft palate are sphincter pharyngoplasty and pharyngeal *** this study,a multidisciplinary approach was applied for proper assessment and surgical intervention using sphincter pharyngoplasty for velopharyngeal insufficiency after cleft palate ***:Twenty patients underwent sphincter *** diagnosis was performed using auditory perceptual assessment,nasoendoscopy assessment,nasometry,and ***:There were statistically significant differences between the preoperative and postoperative *** occurred in two *** sleep apnea occurred in three patients and was resolved spontaneously within three months,and one patient experienced slight wound ***:Velopharyngeal dysfunction after cleft palate repair is best treated by a multidisciplinary team through speech therapy together with sphincter pharyngoplasty.

关键词： Velopharyngeal insufficiency Clinical diagnostic tools Sphincter pharyngoplasty

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MAP激酶级联通过调节ICE1蛋白质稳定性来调节冷应答

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科学新闻 2018年第4期 102-102页

作者： Chunzhao Zhao Pengcheng Wang Tong Si Chuan-Chih Hsu Lu Wang omar zayed Zheping Yu Yingfang Zhu Juan Dong W.Andy Tao 朱健康中国科学院上海植物逆境生物学研究中心

文章简介丝裂原活化蛋白激酶(MAPK)级联信号通路是将环境信号转化为细胞应答反应的重要信号模块。本研究发现,冷处理后MPK3、MPK4和MPK6可被迅速激活。mpk3和mpk6突变体的CBF基因表达升高及耐寒性增强,而组成型激活植物MKK4/5-MPK3/6信... 详细信息

文章简介丝裂原活化蛋白激酶(MAPK)级联信号通路是将环境信号转化为细胞应答反应的重要信号模块。本研究发现,冷处理后MPK3、MPK4和MPK6可被迅速激活。mpk3和mpk6突变体的CBF基因表达升高及耐寒性增强,而组成型激活植物MKK4/5-MPK3/6信号级联则导致CBF基因表达

关键词：基因表达 MAP

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Towards hepatitis C virus elimination:Egyptian experience,achievements and limitations

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World Journal of Gastroenterology 2018年第38期24卷 4330-4340页

作者： Dalia Omran Mohamed Alboraie Rania A zayed Mohamed-Naguib Wifi Mervat Naguib Mohamed Eltabbakh Mohamed Abdellah Ahmed Fouad Sherief Sahar Maklad Heba Hamdy Eldemellawy omar Khalid Saad Doaa Mohamed Khamiss Mohamed El Kassas Department of Endemic Medicine and Hepatology Faculty of MedicineCairo UniversityCairo 11651Egypt Department of Endemic Medicine Faculty of MedicineHelwan UniversityCairo 11599Egypt Department of Internal Medicine Al-Azhar UniversityCairo 11651Egypt Department of Clinical and Chemical Pathology Faculty of MedicineCairo UniversityCairo 11651Egypt Department of Internal Medicine Faculty of MedicineCairo UniversityCairo 11599Egypt Department of Tropical Medicine Faculty of MedicineAin Shams UniversityCairo 11566Egypt National Hepatology and Tropical Medicine Research Institute Cairo 11599Egypt Department of Internal Medicine Faculty of MedicineBeni-Suef UniversityBeni-Suef 62511Egypt Faculty of Medicine Ain Shams UniversityCairo 11566Egypt Department of Clinical and Chemical Pathology El-monera hospitalMinistry of HealthCairo 11562Egypt

Worldwide, more than one million people die each year from hepatitis C virus(HCV) related diseases, and over 300 million people are chronically infected with hepatitis B or C. Egypt used to be on the top of the countries with heavy HCV burden. Some countries are making advances in elimination of HCV, yet multiple factors preventing progress; remain for the majority. These factors include lack of global funding sources for treatment, late diagnosis, poor data, and inadequate screening. Treatment of HCV in Egypt has become one of the top national priorities since 2007. Egypt started a national treatment program intending to provide cure for Egyptian HCV-infected patients. Mass HCV treatment program had started using Pegylated interferon and ribavirin between 2007 and 2014. Yet, with the development of highly-effective direct acting antivirals(DAAs) for HCV, elimination of viral hepatitis has become a real possibility. The Egyptian National Committee for the Control of Viral Hepatitis did its best to provide Egyptian HCV patients with DAAs. Egypt adopted a strategy that represents a model of care that could help other countries with high HCV prevalence rate in their battle against HCV. This review covers the effects of HCV management in Egyptian real life settings and the outcome of different treatment protocols. Also, it deals with the current and future strategies for HCV prevention and screening as well as the challenges facing HCV elimination and the prospect of future eradication of HCV.

关键词： Hepatitis C virus Egypt Direct acting antivirals screening elimination Limitations

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Eosinophilic esophagitis in Egyptian adult patients presenting with upper gastrointestinal symptoms

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Open Journal of Gastroenterology 2014年第2期4卷 88-95页

作者： Shereen Shoukry Hunter Dina omar Helmy Naglaa Aly zayed Tamer Mohamed El-Tayeb Magdy Amin El-Serafy Endemic Medicine Department and Gastrointestinal Endoscopy and Liver Unit Faculty of Medicine Cairo University Cairo Egypt Endoscopy Unit New Kasr El-Ainy Teaching Hospital Cairo Egypt Pathology Department Faculty of Medicine Cairo University Cairo Egypt

Background and Study Aim: Eosinophilic esophagitis (EoE) is a clinicopathological disease characterized by esophageal dysfunction and marked esophageal eosinophilic infiltration. It shows a marked increase in incidence and prevalence and has been associated with gastroesophageal reflux disease (GERD). The aim of this work was to detect the prevalence of EoE in Egyptian adult patients presenting with upper gastrointestinal symptoms and to clarify its clinical pattern and the possibility of its overlap with GERD. Patients and Methods: The study included 91 adult patients presenting with various upper gastrointestinal symptoms. Upper gastrointestinal endoscopy was done and esophageal biopsies were taken. The presence of >15 eosinophils per high power field together with a history of intake of proton pump inhibitors for at least 3 weeks without improvement was used as prerequisite diagnostic criteria for EoE. Results: Classification of the patients was based on both endoscopic and histo-pathological findings. Accordingly, out of the 91 patients, 70 had GERD (76.9%);58 of them had erosive reflux disease (ERD) and 12 had endoscopically normal esophagus but with histopathological changes compatible with reflux esophagitis and were classified as non erosive reflux disease (NERD). Eighteen patients had normal endoscopic and histopathological esophagus (19.8%), and 3 patients had EoE (3.3%), with an overlap between ERD and EoE in one patient. The mean age of EoE patients was 41.6 ± 11.7 years. Two of them were males and one was a female. All of the 3 patients complained of dysphagia and none complained of heartburn. The endoscopists did not report any endoscopic findings characteristic of EoE. Conclusion: The prevalence of EoE is low in adult Egyptian patients presenting with upper gastrointestinal symptoms. Dysphagia is the main presenting symptom of EoE while heartburn is not characteristic of the disease. Normal esophagus endoscopically does not exclude EoE.

关键词： Eosinophilic Esophagitis (EoE) Adults Gastroesophageal Reflux Disease (GERD) Egypt

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Umbilicoplasty: An Important Step in Abdominoplasty Surgery for Massive Weight Loss Cases

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Modern Plastic Surgery 2023年第4期13卷 106-117页

作者： Medhat Emil Habib omar Alameri Anoud Alqaydi Dalal Al Mansoori Aysha Al Naqbi Shamsa Alameri Dalia Medhat Habib Department of Plastic and Reconstructive Surgery Zayed Military Hospital Abu Dhabi UAE

Aim: Excessive increase of weight followed by massive weight loss distorts the shape of the umbilicus as part of the affected skin of the abdomen. There is usually discrepancy between the elongated umbilicus at the time the patient was gaining excessive weight and the thinned abdominal wall after the massive weight loss. This study discusses a procedure that aims at restoring the shape of the umbilicus to its original shape as much as possible. Patients and Methods: In 4 years retrospective study from the 1st of March 2016 till the end of February 2020, the files of the patients who underwent abdominoplasty after massive weight loss with umbilicoplasty performed, as part of the procedure, were reviewed. In these patients the caudal part of the umbilicus at 6 o’clock site was excised in an oblique direction with slanting cut going to both 3 and 9 o’clock directions to shorten the elongated umbilicus keeping the cephalic part at 12 o’clock intact. This residual elongated cephalic part was utilized to make the shape of the hood of the umbilicus. A bolster suture was used at 12 o’clock to add a small depression above the hood. This technique gave the umbilicus the vertical “T” triangular shape with hooding. A questionnaire to assess patients’ satisfaction regarding the shape, depth, location, size, scarring and overall result of the umbilicoplasty procedure was conducted. The questionnaire used a five-point Likert-type scale as follows: 1 (poor), 2 (fair), 3 (good), 4 (very good), and 5 (excellent). Results were collected and evaluated. Results: 197 patients underwent full abdominoplasty surgery during this 4 years study. Those who underwent umbilicoplasty during the abdominoplasty procedure were 34 patients. The results of the questionnaire could be obtained from 23 patients of them. Each patient gave a number from 1 - 5 for each aspect of the questionnaire of the umbilicus shape, depth, location, size, scarring and overall result. This resulted in total number of poin

关键词： Umbilicoplasty Hooding Abdominoplasty Massive Weight Loss

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Clinical Outcome of Abdominoplasty Cases—A Five-Year Retrospective Study

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Modern Plastic Surgery 2023年第1期13卷 1-15页

作者： omar Alameri Medhat Emil Dalal Al Mansoori Anoud Al Qaydi Aysha Al Naqbi Ibrahim Al Marzooqi Dalia Medhat Habib Shamsa Alameri Department of Plastic and Reconstructive Surgery Zayed Military Hospital Abu Dhabi United Arab of Emirates

Aim: The aim of this study is to analyze the outcome of cases who underwent abdominoplasty surgery in our facility for the last five years. Patients and Methods: This is a retrospective study analyzing the outcome of patients who underwent abdominoplasty from the beginning of January 2015 till the end of December 2019 in zayed Military Hospital, Abu Dhabi, United Arab of Emirates. Postoperative complications were recorded. The effects of risk factors including age, sex, smoking, body mass index, associated comorbidity, previous bariatric surgery and combined procedures were evaluated. Results: 213 patients were included in this five-year study. Majority of the patients were females 161 cases (75.6%) while males presented 52 cases (24.4%). The mean age was 38.3 years. The mean BMI was 27 Kg/m2. 127 patients had previous bariatric surgery (59.6%) while 86 patients had not (40.4%). There were no major systemic complications in the cases as deep venous thrombosis, pulmonary embolism or paralytic ileus. There was no mortality in the study cases. Out of the 213 cases included in the study, 23 patients developed haematoma (10.8%), 8 patients developed seroma formation (3.8%), 3 patients had wound infection (1.4%) and one patient had tissue necrosis (0.5%). The complication rate was higher in males 36.4% compared to females 9.9% (p 2 or less had less complications 14.3% compared to those above that level 21.2% although it was not a significant difference (p = 0.231). 55.7% of the smokers had complications while the incidence among non smokers was 8.5% (p < 0.005). Those who underwent previous bariatric surgery had more complications 19.7% compared to those who had not undergone this surgery 11.6% but it was not statistically significant (p = 0.372). Those who had li

关键词： Abdominoplasty Outcome Complications Risk Factors

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Incidence of Haematoma Formation in Relation to Smoking in Abdominoplasty Cases

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Modern Plastic Surgery 2023年第1期13卷 32-40页

作者： Dalal Al Mansoori Anood Alqaydi Shamsa Alameri Medhat Emil Ibrahim Al Marzooqi Aysha Al Naqbi Muhammad Tariq Ayub Dalia Medhat Habib omar Alameri Department of Plastic and Reconstructive Surgery Zayed Military Hospital Abu Dhabi United Arab of Emirates

Objective: This study aims at assessing the relation between smoking and the incidence of haematoma formation in abdominoplasty surgery cases. Patients and Methods: This is a 4 years retrospective study involving the patients who underwent abdominoplasty surgery between the period of May 2015 and April 2019 in zayed Military Hospital, Abu Dhabi, United Arab of Emirates. The incidence of haematoma formation was assessed in relation to tobacco use in these patients. Results: 164 patients met the inclusion criteria of the study. 35 patients were smokers (21.3%) and 129 patients were non-smokers (78.7%). The mean age was 38.4 (21 - 59 years). The mean BMI was 27 kg/m2 (21.4 - 34.7 kg/m2) and the mean hospital stay was 6.5 days (4 - 19). 23 patients in the study developed haematoma (14%). 11 of them had surgical evacuation of the haematoma (6.7%) while the rest were aspirated in the out-patient clinic. Out of the 23 patients who developed haematoma, 17 patients were smokers and 6 were non-smokers. The incidence of haematoma among smokers was 48.6% (17 out of 35 cases) while its incidence among nonsmokers was 4.7% (6 out of 129 cases) showing a clear relationship between smoking and hematoma formation (p Conclusion: Our study shows a direct relationship between smoking and haematoma formation in abdominoplasty cases. Cessation of smoking during the perioperative period is required before embarking on such a procedure.

关键词： Haematoma Smoking Abdominoplasty Surgery Tobacco Use

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Incidence of Haematoma in Post Bariatric Abdominoplasty Cases

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Modern Plastic Surgery 2023年第3期13卷 74-84页

作者： Anoud Al Qaydi Dalal Al Mansoori Medhat Emil Shamsa Alameri Aysha Al Naqbi Ibrahim Al Marzooqi Abdulla Tareq Al Hassani Muhammad Tariq Ayub Dalia Medhat Habib omar Alameri Department of Plastic and Reconstructive Surgery Zayed Military Hospital Abu Dhabi United Arab Emirates

Objective: This study aims at assessing the incidence of haematoma formation in abdominoplasty cases who had previous bariatric surgery and in those who did not have bariatric surgery before. Patients and Methods: This is a 4 years retrospective study involving patients who underwent abdominoplasty surgery between the period of July 2015 and June 2019. The incidence of haematoma formation was assessed in relation to history of previous bariatric surgery in these patients. Results: 164 patients met the inclusion criteria of the study;46 of them were males and 118 were females. The mean age of the patients included in the study was 38.6 (21 - 60 years). The mean BMI was 27 kg/m2 (21.4 - 34.7 Kg/m2). The mean hospital stay was 6.6 days (4 - 19 days). 107 patients had history of previous bariatric surgery performed and 57 had not. 21 patients developed haematoma (12.8%). 16 of the patients who had haematoma had previous bariatric surgery done (15% of post bariatric surgery cases) while 5 patients developed haematoma with no history of previous bariatric surgery (8.8%). Sixteen male patients out of the 46 male patients in the study developed postoperative haematoma (34.8% of the male patients) while only 5 of the 118 female patients developed postoperative haematoma (4.2% of the female patients) which shows a significant difference in haematoma formation when comparing males to females in general (p Conclusion: Our study shows that the incidence of post abdominoplasty haematoma formation is significantly higher in male patients who had bariatric surgery before when compared to those who had not (p < 0.05). The incidence was higher in males when compared to females (p < 0.001) indicating that males with previous history of bariatric surgery have the highest chance of developing haematoma formation. Combining liposuction of the lower flanks, plication of the recti muscles or both to the abdominoplasty procedure did not result significantly in an incre

关键词： Haematoma Abdominoplasty Surgery Postbariatric Surgery Liposuction Plication Recti Muscles

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