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Association between Supraventricular Tachycardia and Necrotizing Enterocolitis: A Case-Control Study

Open Journal of Pediatrics 2022年第5期12卷 793-801页

作者： ali Omar Jimale Zakaria ahmed mohamed Dongchi Zhao Department of Pediatrics Zhongnan Hospital of Wuhan University Wuhan China

Background: Necrotizing enterocolitis (NEC) is the most common and fatal gastrointestinal disease encountered in the Neonatal Intensive Care Unit. Several case reports have shown an association between supraventricular tachycardia and necrotizing enterocolitis. This study aimed to determine the association between supraventricular tachycardia and necrotizing enterocolitis. Methods: This study was conducted from April 1st, 2016 to March 31st, 2022, at the Department of Pediatrics, Zhongnan Hospital of Wuhan University, Hubei, China. The records of 74 subjects with the diagnosis of necrotizing enterocolitis (NEC) were obtained from the hospital’s medical data records. Consequently, 74 gender, gestational age, and birth weight-matched controls (babies without NEC) were recruited as controls. Results: Of the 74 cases, 47.3% of the cases were males, and 52.7% were females. Regarding the birth weight and gestational age, 77% of the cases had low birth weight (LBW) and 86.5% were premature. In terms of Apgar score, 93.2% of NEC cases had an Apgar score of >7 at five minutes. The median values of white blood cells, platelets, and hemoglobin of cases were 10.90 (8.09, 13.80), 227 (169.75, 295.50), and 155.6 (130.53, 170.95), respectively. No Association between supraventricular tachycardia and necrotizing enterocolitis (P = 1.00). Conclusion: No association between necrotizing enterocolitis and supraventricular tachycardia was found. Further multicenter-based studies examining whether there is a potential relationship exists between supraventricular tachycardia and the development of necrotizing enterocolitis are required.

关键词： Supraventricular Tachycardia Neonatal Arrhythmias Necrotizing Enterocol-itis

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The Recurrence of Natural Disasters in Jowhar, Middle Shabelle Region, Somalia: The Causes and Impacts

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Journal of Environmental Protection 2022年第9期13卷 657-670页

作者： mohamed ali ahmed mohamed Hassan mohamed Mst. Mahmuda Parvin Predrag Ilić Department of Environmental Science Stamford University Bangladesh Dhaka Bangladesh Department of Public and Environmental Health Somali International University Mogadishu Somali PSRI Institute for Protection and Ecology of the Republic of Srpska Banja Luka Bosnia and Herzegovina

Natural disasters usually involve a phenomenon with consequences that exceed the response capabilities of local communities and have a significant impact on the region’s socioeconomic development. Droughts, floods, and hurricanes are all natural disasters that jeopardize the environment and the lives of Somalis. Severe floods have devastated the south and central parts of the country multiple times, destroying infrastructure and homes and killing many vulnerable people. Droughts in the south and central parts of the country, particularly in the Middle Shebelle region, have killed a number of children and mothers. It also had a negative influence on crops and cattle. Objective of this study is to know the recurrence of Natural Disasters in Jowhar, Middle Shabelle region, Somalia: The Causes and Impacts. The Somali people are completely aware of natural disasters such as droughts and floods, and they are self-sufficient in dealing with the consequences of these disasters. Furthermore, the Somali government has not fully created environmental laws to protect and conserve the environment, and the majority of laws, rules, acts, and regulations are not used or administered effectively. We also found that the Somali government is not yet financially prepared to deal with these crises, and that there are no strategic plans in the central government or even state administrations to prevent or at least control these disasters from causing extreme harm to the community and the environment.

关键词： Natural Disasters Floods and Droughts Causes Impacts of the Environment

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纳米润滑添加剂改善摩擦磨损提高发动机性能的研究

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润滑与密封 2018年第6期43卷 1-5页

作者：侯献军王士成 mohamed KAMAL ahmed ali 现代汽车零部件技术湖北省重点实验室(武汉理工大学) 湖北武汉430070 汽车零部件技术湖北省协同创新中心湖北武汉430070

以5W-30润滑油为基础油,Al_2O_3/TiO_2为纳米添加剂,配制添加剂质量分数为2%的纳米润滑油。通过摩擦学性能试验台模拟缸套-活塞环摩擦副实际工作过程,研究Al_2O_3/TiO_2纳米添加剂对摩擦学性能的改善;通过场发射扫描电镜(FESEM)对活塞... 详细信息

以5W-30润滑油为基础油,Al_2O_3/TiO_2为纳米添加剂,配制添加剂质量分数为2%的纳米润滑油。通过摩擦学性能试验台模拟缸套-活塞环摩擦副实际工作过程,研究Al_2O_3/TiO_2纳米添加剂对摩擦学性能的改善;通过场发射扫描电镜(FESEM)对活塞环样本微观形貌进行观察,确定表面磨损情况;通过发动机台架实验研究确定实际使用工作过程中,纳米添加剂对发动机动力性能的影响。结果表明,润滑油中加入Al_2O_3/TiO_2纳米添加剂后,缸套-活塞环摩擦副摩擦磨损性能得到明显改善,摩擦因数和活塞环磨损率显著下降,摩擦因数最大下降50.6%,平均下降42%;活塞环磨损率最大下降34.8%,平均下降27.2%;活塞环表面微观形貌得到明显改善,磨损表面得到修复,划痕显著减少;在转速为4 400 r/min时随着负荷逐渐增大,发动机台架实验输出功率最高提升24.2%,低负荷功率增幅显著,高负荷范围内功率平均提升3.3%,动力性能得到较大提升。

关键词：润滑油纳米添加剂摩擦磨损

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High prevalence of chronic viral hepatitis B and C in Minnesota Somalis contributes to rising hepatocellular carcinoma incidence

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World Journal of Gastroenterology 2022年第35期28卷 5217-5229页

作者： Essa A mohamed Nasra H Giama Abubaker O Abdalla Hassan M Shaleh Abdul M Oseini Hamdi A ali Fowsiyo ahmed Wesam Taha hager ahmed Mohammed Jessica Cvinar Ibrahim A Waaeys Hawa ali Loretta K Allotey Abdiwahab O ali Safra A mohamed William S Harmsen Eimad M Ahmmad Numra A Bajwa Mohamud D Afgarshe Abdirashid M Shire Joyce E Balls-Berry Lewis R Roberts Division of Gastroenterology and Hepatology Mayo ClinicRochesterMN 55905United States Center for Clinical and Translational Science Mayo ClinicRochesterMN 55905United States School of Nursing University of MinnesotaMinneapolisMN 55455United States Division of Digestive Diseases Emory School of MedicineAtlantaGA 30322United States Department of Laboratory Medicine and Pathology Mayo ClinicRochesterMN 55905United States Department of Internal Medicine NewYork-Presbyterian QueensFlushingNY 11355United States Department of Pediatrics University of Nevada Las VegasLas VegasNV 89154United States Department of Quantitative Health Sciences Mayo ClinicRochesterMN 55905United States Department of Medicine Gargar Urgent Care and ClinicMinneapolisMN 55406United States Office of the Director Shire ScientificMinneapolisMN 55405United States Department of Neurology Washington University School of Medicine in St LouisSt LouisMO 63130United States Knight Alzheimer Disease Research Center Washington University School of MedicineSt LouisMO 63130United States

BACKGROUND Chronic hepatitis B virus(HBV)and hepatitis C virus(HCV)infections are known risk factors for liver disease,cirrhosis and hepatocellular carcinoma(HCC).There is substantial global variation in HBV and HCV prevalence resulting in variations in cirrhosis and *** previously reported high prevalence of HBV and HCV infections in Somali immigrants seen at an academic medical center in *** To determine the prevalence of chronic viral hepatitis in Somali immigrants in Minnesota through a community-based screening *** We conducted a prospective community-based participatory research study in the Somali community in Minnesota in partnership with community advisory boards,community clinics and local mosques between November 2010 and December 2015(data was analyzed in 2020).Serum was tested for hepatitis B surface antigen,hepatitis B core antibody,hepatitis B surface antibody and anti-HCV *** Of 779 participants,15.4%tested positive for chronic HBV infection,50.2%for prior exposure to HBV and 7.6%for chronic HCV *** age-adjusted frequencies in males and females for chronic HBV were 12.5%and 11.6%;for prior exposure to HBV were 44.8%and 41.3%;and for chronic HCV were 6.7%and 5.7%,*** participants developed incident HCC during follow *** Chronic HBV and HCV are major risk factors for liver disease and HCC among Somali immigrants,with prevalence of both infections substantially higher than in the general United States ***-based screening is essential for identifying and providing health education and linkage to care for diagnosed patients.

关键词： Viral hepatitis Liver disease Community engagement African Immigrant health

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Knowledge, Attitude and Practice on Common Diabetic Patients among Diabetic Complications at Egyptian Hospital in Mogadishu, Somalia

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Journal of Biosciences and Medicines 2021年第9期9卷 87-99页

作者： mohamed Hassan mohamed Maryan ahmed Farah mohamed Abdulkadir ali Najma Abdirahman mohamed Abdiqafar mohamed Hassan Department of Public Health College of Health Science Somali International University Mogadishu Somalia Somali International University Mogadishu Somalia Faculty of Medicine and Surgery Somali International University Mogadishu Somalia

Diabetes is a chronic illness that occurs when the pancreas stops producing insulin or when the body cannot use the produced insulin. Insulin is a hormone produced by the pancreas that helps glucose from meals enters the body’s cells for energy. The overall goal is to assess diabetes patients’ knowledge, attitudes, and behaviors about prevalent diabetic complications. This research used a descriptive qualitative methodology to assess diabetes complication knowledge, attitude, and practice. Ninety-eight diabetic patients were visiting the Egyptian Hospital in Mogadishu for four weeks. The data was collected using questionnaires. Finally, SPSS 20 was utilized for analysis. The research was performed from May to July 2020 with a non-probability sample size of 98 diabetics. The bulk of responders were aged 40 - 60 (36.7%). Type 2 was the most common (47.96%). 44.9% of respondents had diabetes for more than ten years. 60.2% had regular checkups, and 54.1 percent had therapy. 52% of participants were on a diet. 63.3% of respondents do not exercise often. However, most responders know the common issues (75%). Less than half of those polled had problems (41.8%). 22% incidence of Diabetic ketoacidosis. 78.6% of respondents know variables that decrease diabetes complications, whereas 22.4% do not. 37.8% of respondents saw a doctor for diabetes problems, whereas 62.2% did not. Diabetic patients’ knowledge, attitude, and practice were satisfactory for fundamental illness entanglements and self-testing. These findings may also be due to patient notification and, therefore, long-term illness that leads them to get acquainted with things alone. However, the tendency for regular exercise was low, which may produce more specific consequences of illness. Conclusion: We find that DM patients’ KAP was adequate in terms of knowledge of diabetic complications. These results may explain the patients’ long-standing illness, which forces them to discover t

关键词： Blood Sugar Level Diabetes Complications Diabetes Mellitus Diabetic Patient Knowledge

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Effective Mass Model Reduced to Ordinary Mass Using Newton’s, Quantum and Generalized Special Relativity

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Natural Science 2021年第9期13卷 398-406页

作者： Nagwa Idriss ali ahmed mohamed Idriss ahmed Mubarak Dirar Abd-Alla Department of Physics Faculty of Science and Art (Dariah) Qassim University Almulid KSA Department of Physics and Mathematics Hantoub Faculty of Education Gezira University Hantoub Sudan Department of Physics Faculty of Science Sudan University of Science and Technology Khartoum Sudan

The concept of the effective mass in crystals shows that the electron mass is affected by the crystal field and was experimentally verified. A useful expression for effective mass was obtained. Unfortunately this expression showed that the effective mass vanishes in the ab-sence of the external field. This is in conflict with observations which show that it reduces to the ordinary mass. To cure this defect a new model is developed assuming the existence of vacuum force as verified experimentally as shown by Casimir effect. Using Newton’s second law and the quantum expression of momentum, useful expressions were found. The same expression was found using generalized special relativity. Strikingly the three models reduced to the conventional one in the absence of vacuum, they also reduced to the ordinary electron mass in the absence of all forces.

关键词： Effective Mass Newton’s Second Quantum Momentum Generalized Special Relativity

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Efficacy and safety of once daily tacrolimus compared to twice daily tacrolimus after liver transplantation

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World Journal of Hepatology 2021年第3期13卷 375-383页

作者： Khalid Ibrahim Bzeizi ali Albenmousa Abdulhaleem mohamed Shawkat Zidan ahmed Saleh Alabbad Waleed Alhamoudi Roberto Troisi Deiter Broering Department of Liver Transplantation King Faisal Specialist Hospital and Research CenterRiyadh 12713Saudi Arabia Department on Internal medicine Faculty of MedicineMinia UniversityMina 1234Egypt Department of Liver and Small Bowel Transplantation and Hepatobiliary-Pancreatic Surgery King Faisal Specialist Hospital and Research CenterRiyadh 12713Saudi Arabia Organ Transplant Center King Faisal Specialist Hosp and Res CtrRiyadh 11211Saudi Arabia

BACKGROUND Once daily tacrolimus regimen was found to exhibits similar bioavailability,safety and efficacy properties compared to twice-daily tacrolimus in kidney transplantation *** To compare the efficacy and safety of once-daily prolonged release tacrolimus compared to twice-daily tacrolimus in liver transplantation *** MEDLINE,EMBASE,CENTRAL databases were searched for clinical trials until December *** outcome measured as the rate of treatment failure indicated by biopsy-proven acute rejection,Serum creatinine,graft loss,or *** reviewers independently selected studies,collected data and assessed risk of *** results are reported as risk ratio with 95%confidence interval(CI)for dichotomous *** Seven studies included with 965 *** the included studies were of moderate quality according to the risk of bias assessment using Cochrane Risk of Bias ***-proven acute rejection was reported in four studies,and pooled analysis of those studies indicated similar rejections in both twice daily and once daily tacrolimus groups(risk ratio:1.06,95%CI:0.84-1.34,n=758,I2=0%)and also we found no significant difference between both groups for renal outcome(serum creatinine;mean difference,0.001 mg/dL,95%CI:-0.042 to 0.043,n=846,I2=18.6%).Similarly,there was similar number of adverse events such as hypertension,headache,back pain,blood related disorders,infections and nausea observed in both *** The analysis findings confirm that both once daily and twice daily tacrolimus formulations are comparable in terms of efficacy and safety outcomes.

关键词： Prolonged release Tacrolimus Liver transplantation Graft rejection Renal impairment FK level

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A New Thioamide Derivative for Separation and Preconcentration of Multi elements in Aquatic Environment by Cloud Point Extraction

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American Journal of Analytical Chemistry 2011年第6期2卷 697-709页

作者： mohamed M. Hassanien ali M. Hassan Wael I. Mortada ahmed A. el-Asmy 不详

2-(pyridine-2-yl)-N-p-chlorohydrazinecarbothioamide (HCPTS) was synthesized, characterized and successfully applied for the preconcentration of Cu(II), Ni(II), Zn(II), Cd(II), Co(II), Pb(II), Fe(II), and Hg(II) in water, blood, and urine samples prior to graphite furnace atomic absorption determination (GFAAS);Hg was determined by cold vapor technique. Under the optimum experimental conditions (i.e. pH = 8, 10–4 M of HCPTS, 0.05% w/v of Triton X-114), calibration graphs were linear in the range of 0.02 to 200 ng?mL–1 for Co(II), Cd(II), Pb(II) and Ni(II);0.03 to 200 ng?mL–1 for Cu(II);0.07 to 200 ng?mL–1 for Fe(II) and Zn(II) and 0.02 to 150 ng?mL–1 for Hg(II). The enrichment factors were 43, 51, 41, 46, 54, 40, 45 and 52 for Cu(II), Ni(II),Zn (II), Cd(II), Co(II), Pb(II), Fe(II), and Hg(II), respectively. The limit of detection were found to be 0.019, 0.094, 0.0514, 0.052, 0.0165, 0.047, 0.068 and 0.041 ng?mL–1 for Cu(II), Ni(II), Zn(II), Cd(II), Co(II), Pb(II), Fe(II), and Hg(II), respectively. The developed method was applied to the determination of these metal ions in water, blood and urine samples with satisfactory results.

关键词： Heavy Metals Preconcentration Cloud Point Extraction 2-(Pyridine-2-Yl)-N-P-Chlorohydrazinecarbothioamide

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Performance Analysis with Channel Estimation and Adaptive Equalization in Slow Rayleigh Fading Channel for8-QPSK and256-QAM

Performance Analysis with Channel Estimation and Adaptive Eq...

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作者： ahmed mohamed ali Abdelrahman 湖南大学

学位级别：硕士

在过去的几十年里,因为在对抗多径衰落信道中支持高数据速率和有效性,人们已经对多载波系统进行广泛的研究。多载波调制(MCM)是将数据流分成几个并行的比特流,每个比特率要低得多,并通过使用这些比特流传输数据。多载波调制(MCM)代表目... 详细信息

在过去的几十年里,因为在对抗多径衰落信道中支持高数据速率和有效性,人们已经对多载波系统进行广泛的研究。多载波调制(MCM)是将数据流分成几个并行的比特流,每个比特率要低得多,并通过使用这些比特流传输数据。多载波调制(MCM)代表目前和未来的高速数字通信。许多新的有线和无线通信应用要求高数据速率和大的带宽。MCM通过正交频分复用(OFDM)的形式应用于在一些如数字音频广播(DAB),数字视频广播(DVB)和无线局域网(WLAN)的无线通信系统中。正交频分复用(OFDM)引入了有限的物理信道带宽内分配更多的交通信道的概念。因此,可用带宽分成几个同时传输的窄带通道。在频分复用,保护带提供个人之间的通道,分隔不同的渠道,能够使用特殊的频段检测通道。在相邻信道的OFDM中不同的频率划分重叠类似于相邻信道干扰,但子载波之间保持正交关系。通过采用OFDM,这是有可能实现对多径信道的高的频率利用率和鲁棒性。在OFDM系统中,调制技术,如BPSK(二进制相移键控)和多级正交调幅(M-QAM)映射到信号星座符号固定数量的信息比特。每个信号的星座符号代表在二维的基带信号空间的一个点。在这篇论文中,我们将测试三种不同的通道(AWGN信道,平坦衰落信道,频率选择性信道)下,数据和图像通过256-QAM和8-QPSK调制接收星座和误码率(BER)。为了比较模拟信道衰落和接收器的设计,我们首先需要选择的相应的标准。目前有很多的根据信道衰落和需要估计标准,如OFDM, CDMA RAKE接收机,MIMO技术等。在本文中,我们选择OFDM标准。我们首先使用MATLAB建立一个无线通信模拟器,包括灰度编码,调制,三通道模式,信道估计,自适应均衡和解调。在我们的模拟中,我们测试不同的信道模式下的256-QAM和8-QPSK的调制星座图和误码率(BER)。在此模型中,我们使用的基于导频信道估计。这是因为导频信息是由接收器使用以便更好地估计在传播符号的频率衰落下有者更高数据接收率。在我们的模型,试验数据的长度是数据总长度的8%,并插入到每个相干时间源数据的头节点。我们还可以使用最小均方(LMS),自适应均衡,以帮助消除无线通道的影响以方便解调。对于图像而言,我们比较在不同的渠道收到的图像和原始图像。在瑞利慢平坦衰落信道,我们比较接收和调整后的图像。另一方面,在瑞利慢衰落信道频率选择性,我们测试在两个不同的模式(判决引导和训练)下接受到的图像。在我们的模型,测试图像文件给我们不同的信道比较下直观的印象。最后,我们给出详细结果和分析在慢瑞利衰落信道下信道估计和自适应均衡的性能改善。仿真结果表明,不像8QPSK在随机数据下平坦衰落信道仿真结果,256-QAM的误码率性能几乎与理论误码率相同。此外,使用256-QAM编码,在频率选择性衰落信道的中决策指示比培训模式的误码率更好,大多数情况下接近理论值。此外,通过比较图像文件,我们可以得到,在频率选择性衰落信道中,决策指挥模式下的256-QAM几乎接近原始图像的质量。这意味着,在256-QAM,均衡的图像不受任何噪音影响。这是因为256-QAM可以发送8位符号这是非常有效率,不同于8-QPSK,受到一些随机噪声导致图像的重叠。

关键词：信道估计 AWGN 慢衰落平坦衰落和频率选择性衰落

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Total hip arthroplasty for post-firearm hip arthritis complicated by coloarticular fistula:A case report

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Chinese Journal of Traumatology 2023年第6期26卷 369-374页

作者： ahmed M.Abdelaal Mohammad Kamal Abdelnasser mohamed MA.Moustafa ahmed mohamed ali Haisam Atta ahmed A.Khalifa Orthopaedic and Traumatology Department Assiut University HospitalAssiutEgypt General Surgery Department Assiut University HospitalAssiutEgypt Radiology Department Assiut University HospitalAssiutEgypt Orthopedic Department Qena Faculty of Medicine and University HospitalSouth Valley UniversityQenaEgypt

Hip firearm injuries are rare injuries that could lead to serious complications,such as posttraumatic hip arthritis and coloarticular *** report a case of a 25-year-old male who sustained a pelvic injury caused by a single bullet which led to a bilateral acetabular fracture,concomitant with a colon injury treated on an emergency basis by a diverting colostomy;acetabular fractures were treated conservatively by *** the patient recovered from the abdominal injury,he was presented with bilateral hip pain and limited motion;plain radiographs showed bilateral hip arthritis with proximal migration of the femoral head and bilateral acetabular defect classified as Paprosky type *** of the hips was performed using the same technique:impaction bone grafting for acetabular defect reconstruction and a reversed hybrid total hip arthroplasty(THA)6 months *** patient presented with loosening of the left THA acetabular cup 3 years later,which was revised;then he presented with a discharging sinus from the left THA with suspicion of coloarticular fistula,which was confirmed using CT with contrast material.A temporary colostomy and fistula excision were performed,and a cement spacer was applied to the *** clearing the infection,a final revision THA for the left hip was *** post-firearm hip arthritis by THA is challenging,especially in the situation of neglected cases with the presence of an acetabular *** intestinal injury increases the risk of infection with the possibility of coloarticular fistula formation,which could present *** with a multidisciplinary team is paramount.

关键词： Hip firearm injury Total hip arthroplasty Secondary hip osteoarthritis Coloarticular fistula

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