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Analytical Model for Underwater Wireless Sensor Network Energy Consumption Reduction

Computers, Materials & Continua 2022年第7期72卷 1611-1626页

作者： Huma Hasan rizvi Sadiq ali Khan Rabia Noor Enam Kashif Nisar Muhammad Reazul Haque Computer Science Department UBIT Karachi UniversityKarachi75270Pakistan Sir syed University of Engineering and Technology Karachi75300Pakistan Faculty of Computing and Informatics University Malaysia SabahJalan UMS88400Kota KinabaluSabahMalaysia Faculty of Computing&Informatics Multimedia UniversityPersiaran Multimedia63100CyberjayaSelangorMalaysia

In an Underwater Wireless Sensor Network(UWSN),extreme energy loss is carried out by the early expiration of sensor nodes and causes a reduction in efficiency in the submerged acoustic sensor *** based on clustering strategies,instead of each node sending information by itself,utilize cluster heads to collect information inside the clusters for forwarding collective information to *** can effectively minimize the total energy loss during *** environment of UWSN is 3D architecture-based and follows a complex hierarchical clustering strategy involving its most effecting unique parameters such as propagation delay and limited transmission *** base clustering strategy works in rounds,where each round comprises three fundamental stages:cluster head selection,grouping or node association,and data aggregation followed by forwarding data to the *** UWSN,the energy consumed during the formation of clusters has been considered casually or completely evaded in the previous *** this paper,the cluster head setup period has been considered the main contributor to extra energy utilizer.A numerical channel model is proposed to compute extra *** is performed by using a UWSN broad *** results have shown that extra maximum energy consumption is approximately 12.9 percent of the system total energy consumed in information transmissions.

关键词： Analytical model submerged acoustic sensor systems energy loss round base clustering UWSN extra energy

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Comparative assessment of clinical profile and outcomes after primary percutaneous coronary intervention in young patients with single vs multivessel disease

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World Journal of Cardiology 2020年第4期12卷 136-143页

作者： Atif Sher Muhammad Tariq Ashraf Ayaz Mir syed alishan Faiza Farooq ali Ammar Musa Karim syed Nadeem Hassan rizvi Tahir Saghir Jawaid Akbar Sial Naveed Ullah Khan Department of Adult Cardiology National Institute of Cardiovascular DiseasesKarachi 75510Pakistan Department of Clinical Research National Institute of Cardiovascular DiseasesKarachi 75510Pakistan

BACKGROUND Even though percutaneous coronary intervention(PCI)improved the survival of patients with acute myocardial infarction,still multivessel coronary artery disease remains an important factor burdening prognosis and it is being associated with a worse prognosis compared to single-vessel disease(SVD).AIM To compare the clinical profile and outcomes after the primary PCI in young patients with SVD vs multivessel disease(MVD).METHODS The retrospective cohort of patients were divided into two groups:SVD and MVD *** study population consisted of both male and female young(≤45 years)patients presented with ST-elevation myocardial infarction(STEMI)at the National Institute of Cardiovascular Disease,Karachi,Pakistan and undergone primary PCI from 1 st July 2017 to 31 st March *** and postprocedure management of the patients was as per the guidelines and institutional *** A total of 571 patients with STEMI,≤45 years were stratified into two groups by the number of vessels involved,342(59.9%)with SVD and 229(40.1%)with *** average age of these patients was 39.04±4.86 years.A lower prevalence of hypertension and diabetes was observed in SVD as compare to MVD group(25.1%vs 38%,P<0.01;11.7%vs 27.5%,P<0.001)***,smoking was more prevalent among the SVD group as compare to MVD group(36.3%vs 28.4%,P=0.05).The high-C Lesion was observed in a significantly higher number of younger patients with MVD as compared to SVD group(48.8%vs 39.2%,P=0.021).Post-procedure thrombolysis in myocardial infarction flow grade was found to be not associated with the number of diseased vessels with a P value of 0.426 and thrombolysis in myocardial infarction flow grade III was observed in 98%vs 96.5%of the patients is SVD vs MVD *** The MVD comprised of around 40%of the young patients presented with ***,this study shows that diabetes and hypertension have a certain role in the pathogenesis of multivessel diseases,therefore,preventive

关键词： Young Multivessel disease Primary percutaneous coronary intervention STelevation myocardial infarction Premature coronary artery diseases Single-vessel disease

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Bilateral Retractile Testis: A Possible Risk Factor for Male Infertility

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Advances in Sexual Medicine 2022年第1期12卷 9-17页

作者： syed Intesar Burni Shazia R. Khan Fareena Khalil Ahmed Sameera ali rizvi Tazeen Saeed ali National Research Institute for Fertility Care Ministry of Health Karachi Pakistan Research Institute of Fertility Care M/O Health Karachi Pakistan Sir syed College of Medical and Dental Science Karachi Pakistan Department of Public Health Faculty of Life Sciences SZABIST Karachi Pakistan School of Nursing and Midwifery Department of Community Health Sciences Aga Khan University Karachi Pakistan

Healthy youth is an asset and strength for economic and social growth of any society. Developmental changes during puberty of youngsters need proper guidance to avoid future physical, physiological and psychological ailments. Bilateral Retractile Testis (BRT) is a health problem if remains unnoticed till adolescence can lead to tribulations. BRT may affect testicular parenchyma and spermatogenesis. Cremasteric muscles (muscles attached with testes) pull the testes up into groin so it randomly moves up and down and do not reside in its natural pouch always. It has been a controversial issue in male infertility as retraction may affect infertility. Objective: To estimate the prevalence of male infertility among patients with Bilateral Retractile Testis. Methodology: A total of 200 male patients were enrolled after the power calculation, with different reproductive health problems between the age of 18 - 40 years during the year 2016 at Reproductive health clinic Jinnah Post Graduate Medical Center (JPMC), Karachi. 25 male patients were reported with infertility and BRT. The data was collected using self-developed questionnaire including outdoor patients’ physical check-up, manual testicular examination as size and shape were done. Patient height, weight, blood pressure, their lifestyle, and dressing regarding wearing tight jeans habits were asked. Semen analysis was c

关键词： Bilateral Retractile Testis Male Infertility Lifestyle Karachi

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Finite Element Analysis of Laterally Loaded Fin Monopiles for Offshore Wind Turbine Foundation in Plaxis 3D

Finite Element Analysis of Laterally Loaded Fin Monopiles fo...

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作者：瑞兹（syed Muhammad Faheem rizvi）东南大学

学位级别：硕士

The effort has been made in recent years to increase the generation of sustainable power energy,such as wind *** wind turbine industry expands quickly and wind turbines keep on growing in both size and ***,new construction sites are incorporated as large areas are required in order to construct the wind turbine *** means that onshore area will not fulfill the requirement and offshore wind farms are being built increasingly farther from the coast and in deeper *** offshore wind turbines are often placed at water depths of *** most effectively and efficient offshore foundation for wind turbines are *** monopiles foundation often have an embedded length of 20-35 m and a diameter of 4m-8 *** a brief outline of the current state-of-the-art of the wind energy industry and an explanation about the significance of monopiles on offshore wind industry,the specificities of their geotechnical design,specifically the lateral-load design of these piles,is *** interaction between the soil and pile is usually characterized by a load-displacement curve,to which several theories were established over the years and is the basis of current lateral-load design of offshore *** aim of this thesis is to evaluate and compared experimental results of laterally loaded large scale monopiles located in East China Sea with same parameter of finite element model（FEM）of Plaxis3D,which is characterized by its flexible behavior,used as foundations for offshore wind turbines in different layers of *** this thesis,a 3D analysis of nonlinear with an elastic plastic soil model,an elastic pile material and interface elements are used to model the pile and soil *** study involves an investigation of the laterally loaded hollow steel monopile piles with 2.8 m outer diameter,with its displacements,followed by an interpretation and validation of the results with the existing theoretical principles of soil mechanics

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Restless Legs Syndrome in Liver Transplant Recipients

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International Journal of Clinical Medicine 2013年第3期4卷 145-151页

作者： Rose Franco syed rizvi Jose Franco Farhan rizvi Department of Ophthalmology Medical College of Wisconsin Milwaukee USA. Division of Gastroenterology and Hepatology Medical College of Wisconsin Milwaukee USA Division of Pulmonary and Critical Care Medical College of Wisconsin Milwaukee USA

Background: The prevalence of restless legs syndrome (RLS) is approximately 10% in general population. This condition is more prevalent in certain diseases and we previously reported the prevalence of RLS in chronic liver disease population to be 62%. Objectives: Our aim was to assess the self-reported prevalence of RLS using an RLS symptom specific questionnaire in liver transplant patients. Methods: Subjects were a convenience sample in transplant clinic. They completed a validated survey for core RLS symptoms and if positive went on to completed a telephone survey using the validated International RLS Severity Scale Questionnaire (IRLS) and the Johns Hopkins RLS QoL survey to measure the effect of RLS symptoms on daily activities. Results: 40 patients surveyed, RLS was found in 16 subjects (40%) with moderate severity {17 (SD + 7.2, high score 31)}. Hepatitis C as indication for liver transplant was more likely associated with RLS (p = 0.05). Calcium channel blockers were protective (p = 0.032) while antidopaminergic agent use was statistically significant for RLS symptom (p = 0.005). On multiple linear regression analysis, diabetes (p = 0.024) and use of antidepressants/antihistamines (p = 0.049) were associated with RLS. Quality of Life (QoL) surveys specific to RLS suggested RLS symptoms resulted in significantly diminished QoL, with an average QoL score of 80 (SD + 11.7). Conclusion: There was a very high prevalence of RLS in our liver transplant patients with majority experiencing moderate or severe symptoms. The explanation for this higher prevalence is likely due to combination of comorbidites as well as medications that can trigger RLS.

关键词： Restless Legs Syndrome (RLS) Liver Transplant Prevalence

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Pleural Fluid Alkaline Phosphate Levels to Differentiate between Tuberculosis and Malignant Pleural Effusion a Tertiary Care Experience

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Journal of Tuberculosis Research 2023年第2期11卷 86-94页

作者： syed Abdul Waheed Afshan Nisar Amanullah Lail Ghulamullah Lail Muhammad Imran Javid ali Mahboob ali Kamran Khan Nadeem rizvi Department of Chest Jinnah Postgraduate Medical Hospital Karachi Pakistan Department of Pediatrics Dow International Medical College (DIMC) Karachi Pakistan Department of Medicine and Allied Jinnah Medical and Dental College Karachi Pakistan Department of Nursing KulsoomBai Social Security Hospital Karachi Pakistan School of Nursing Liaquatabad University of Karachi Karachi Pakistan

Introduction: Pleural effusion (PF) is a common clinical presentation in several diseases. Tuberculosis is one of the most frequent causes of exudative pleural effusions in immunocompetent patients. Tuberculosis is the leading cause of morbidity and mortality from an infectious disease in developing countries. Pakistan is ranked fifth in the world in terms of tuberculosis high-burden countries. Various pleural fluid parameters have been used to identify the cause of pleural effusion. It has been discovered that tuberculous pleural effusions had a greater alkaline phosphatase (ALP) concentration than transudative effusions. This study used pleural fluid alkaline phosphatase levels to distinguish between tuberculous pleural effusion and malignant pleural effusion because there is little information from tuberculosis-high burden nations like Pakistan. Study Design: A descriptive cross-sectional study conducted at the Jinnah Postgraduate Medical Center in Karachi between October 2016 and October 2017. Material and Methods: The study comprised all patients who were admitted to the department of chest medicine at Jinnah post graduate medical centre (JPMC) of either gender between the ages of 18 and 70 who had exudative lymphocytic pleural effusions lasting two weeks or more included in the study. Non probability consecutive sampling was used to collect data. Patients who have tonsillitis, pharyngitis, pneumonia, asthma, Chronic obstructive pulmonary disease (COPD), or a history of hemoptysis, Bleeding disorders like, platelet function disorder, thrombocytopenia, Liver cirrhosis and Pregnant women were excluded. Parents’ informed consent was obtained after being informed of the study’s protocol, hazards, and advantages. Each patient had their level of pleural fluid alkaline phosphate (PALP) assessed. In order to evaluate the patient’s pleural effusion, a pre-made questionnaire was used. All the collected data were entered into the SPSS 20. An independent sample t-test was

关键词： Pleural Fluid (PF) Alkaline Phosphatase (ALP) Tuberculosis Malignant

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Association of genetic variants with diabetic nephropathy

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World Journal of Diabetes 2014年第6期5卷 809-816页

作者： Saliha rizvi syed Tasleem Raza Farzana Mahdi Department of Biochemistry Era’s Lucknow Medical College and Hospital

Diabetic nephropathy accounts for the most serious microvascular complication of diabetes mellitus. It is suggested that the prevalence of diabetic nephropathy will continue to increase in future posing a major challenge to the healthcare system resulting in increased morbidity and mortality. It occurs as a result of interaction between both genetic and environmental factors in individuals with both type 1 and type 2 diabetes. Genetic susceptibility has been proposed as an important factor for the development and progression of diabetic nephropathy, and various research efforts are being executed worldwide to identify the susceptibility gene for diabetic nephropathy. Numerous single nucleotide polymorphisms have been found in various genes giving rise to various gene variants which have been found to play a major role in genetic susceptibility to diabetic nephropathy. The risk of developing diabetic nephropathy is increased several times by inheriting risk alleles at susceptibility loci of various genes like ACE, IL, TNF-α, COL4A1, e NOS, SOD2, APOE, GLUT, etc. The identification of these genetic variants at a biomarker level could thus, allow the detection of those individuals at high risk for diabetic nephropathy which could thus help in the treatment, diagnosis and early prevention of the disease. The present review discusses about the various gene variants found till date to be associated with diabetic nephropathy.

关键词： Diabetes mellitus Diabetic nephropathy Genetic polymorphism Gene variants Nephropathy

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Cost saving by reloading the multiband ligator in endoscopic esophageal variceal ligation: A proposal for developing countries

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World Journal of Gastroenterology 2008年第14期14卷 2222-2225页

作者： Zaigham Abbas Lubna rizvi Umair syed Ahmed Khalid Mumtaz Wasim Jafri Department of Medicine The Aga Khan University Hospital Karachi 74800 Pakistan

AIM:To assess the cost savings of reloading the multiband ligator in endoscopic esophageal variceal ligation (EVL) used on the same patient for subsequent sessions. METHODS:This single centre retrospective descriptive study analysed patients undergoing variceal ligation at a tertiary care centre between 1st January, 2003 and 30th June, 2006. The multiband ligator was reloaded with six hemorrhoidal bands using hemorrhoidal ligator for the second and subsequent sessions. Analysis of cost saving was done for the number of follow-up sessions for the variceal eradication. RESULTS:A total of 261 patients underwent at least one session of endoscopic esophageal variceal ligation between January 2003 and June 2006. Out of 261, 108 patients (males 67) agreed to follow the eradication program and underwent repeated sessions. A total of 304 sessions was performed with 2.81 sessions per patient on average. Thirty-two patients could not complete the programm. In 76 patients (70%), variceal obliteration was achieved. The ratio of the costs for the session with reloaded ligator versus a session with a new ligator was 1:2.37. Among the patients who completed esophageal varices eradication, cost saving with reloaded ligator was 58%. CONCLUSION:EVL using reloaded multiband ligators for the follow-up sessions on patients undergoing variceal eradication is a cost saving procedure. Reloading the ligator thus is recommended especially for developing countries where most of the patients are not health insured.

关键词： Esophageal varices Reloading Multiband ligator Eradication Cost saving

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Microcontroller programming

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1000年

作者： rizvi syed R.

来源：畅想之星图书光盘版（南... 评论

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Power efficient scheme for self localization in wireless sensor networks

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通讯和计算机（中英文版） 2009年第10期6卷 37-43,53页

作者： Allon Rai Sangita Ale syed S. rizvi Aasia Riasat Computer Science and Engineering Department University of Bridgeport Bridgeport 06604 USA Computer Science Department Institute of Business Management Karachi 78100 Pakistan

With the tremendous applications of the wireless sensor network, self-localization has become one of the challenging subject matter that has gained attention of many researchers in the field of wireless sensor network. Localization is the process of assigning or computing the location of the sensor nodes in a sensor network. As the sensor nodes are deployed randomly, we do not have any knowledge about their location in advance. As a result, this becomes very important that they localize themselves as manual deployment of sensor node is not feasible. Also, in WSN the main problem is the power as the sensor nodes have very limited power source. This paper provides a novel solution for localizing the sensor nodes using controlled power of the beacon nodes such that we will have longer life of the beacon nodes which plays a vital role in the process of localization as it is the only special nodes that has the information about its location when they are deployed such that the remaining ordinary nodes can localize themselves in accordance with these beacon node. We develop a novel model that first finds the distance of the sensor nodes then it finds the location of the unknown sensor nodes in power efficient manner. Our simulation results show the effectiveness of the proposed methodology in terms of controlled and reduced power.

关键词：无线传感器网络网络定位传感器节点节点位置省电本地化仿真结果控制权

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