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Nutritional support in chronic liver disease and cirrhotics

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World Journal of Hepatology 2018年第10期10卷 685-694页

作者： Ravi Shergill Wajahat Syed Syed Ali rizvi Ikjot Singh Radiology Department McMaster UniversityHamiltonON L8S4L8Canada McMaster University HamiltonON L8S4L8Canada

The liver is a major organ and an essential componentin maintaining an appropriate nutritional status in healthy individuals through metabolism of protein, carbohydrates, and fat. In individuals with chronic liver disease(CLD), along with a number of other essen-tial functions that the liver serves, its role in nutrition maintenance is severely impaired. Common causes of CLD include hepatitis C, alcoholic liver disease, and non-alcoholic liver disease. Amongst this population, the most common manifestation of impaired nutritional maintenance is protein-calorie malnutrition. Aside from inherent abnormalities in metabolism, such as malab-sorption and maldigestion, CLD can be associated with anorexia as well as increased metabolic requirements, all of which contribute to a state of malnutrition. Given the systemic implications and impact on prognosis of malnutrition, proper nutritional assessment is essential and can be achieved through a thorough history and physical, as well as biochemical investigations and anthropometry as needed. Following an appropriate assessment of a patient's nutritional status, an approach to management can be decided upon and is based on the extent of malnutrition which directly reflects the severity of disease. Management options can be grossly separated into enteral and parenteral nutrition. The former is usually sufficient in the form of oral supplements in less severe cases of malnutrition, but as the CLD worsens, parenteral nutrition becomes necessary. With appropriate assessment and early intervention, many of the complications of CLD can be avoided, and ultimately better outcomes can be achieved.

关键词： Chronic liver disease Cirrhosis Energy requirements Nutrition Malnutrition Anthropometry Liver

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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套筒灌浆密实度直接冲击振动检测方法

中南大学学报（自然科学版） 2021年第3期52卷 848-858页

作者：王奎华郑茗旺涂园项驰轩刘鑫谭婕 rizvi Faheem 杨学林余亚超浙江大学软土与环境工程教育部重点实验室浙江杭州310058 浙江大学建筑工程学院滨海和城市岩土工程研究中心浙江杭州310058 浙江省建筑设计研究院浙江杭州310006 浙江宝业现代集团浙江绍兴312030

装配式建筑结构一般由多个预制构件,通过钢筋套筒灌浆连接形成。然而,目前工程上对套筒内的灌浆密实度还没有可靠的检测和分析判断方法。本文设计一种带有全桥应变片的装置,可对套筒内钢筋产生短脉冲激振,然后对振动信号的时域和频域进... 详细信息

装配式建筑结构一般由多个预制构件,通过钢筋套筒灌浆连接形成。然而,目前工程上对套筒内的灌浆密实度还没有可靠的检测和分析判断方法。本文设计一种带有全桥应变片的装置,可对套筒内钢筋产生短脉冲激振,然后对振动信号的时域和频域进行分析,从而实现对套筒灌浆密实度的定性及定量判断。结合室内原型试验,分析不同灌浆密实度的钢筋套筒受冲击后的振动信号,研究冲击信号时域曲线中的波峰幅值A_(Peak)、半峰全宽Δt_(FWHM)和峰宽比R_(Pt)以及频域信号曲线中的峰值频率Ω_(Peak)等特征参数的变化规律。研究结果表明:随着套筒灌浆密实度n增加,冲击信号的时域曲线衰减速率增大,包括波峰幅值APeak、半峰全宽Δt_(FWHM)和峰宽比R_(Pt)等特征参数也均随之增大;随着套筒灌浆密实度n增加,冲击信号的频域曲线的峰频率Ω_(Peak)趋于减小;对于未知灌浆密度的套筒,将冲击信号所得的峰宽比RPt或峰频率Ω_(Peak)代入曲线拟合的计算公式,可直接计算套筒灌浆密实度n,从而实现灌浆密实度的定量判断。

关键词：灌浆密实度检测钢筋套筒直接冲击振动法装配式建筑定量判断

A Meta-Learning Approach for Aircraft Trajectory Prediction

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Communications and Network 2023年第2期15卷 43-64页

作者： Syed Ibtehaj Raza rizvi Jamal Habibi Markani René Jr. Landry É cole de technologies supérieure (&#201TS) Montréal Canada

The aviation industry has seen significant advancements in safety procedures over the past few decades, resulting in a steady decline in aviation deaths worldwide. However, the safety standards in General Aviation (GA) are still lower compared to those in commercial aviation. With the anticipated growth in air travel, there is an imminent need to improve operational safety in GA. One way to improve aircraft and operational safety is through trajectory prediction. Trajectory prediction plays a key role in optimizing air traffic control and improving overall flight safety. This paper proposes a meta-learning approach to predict short- to mid-term trajectories of aircraft using historical real flight data collected from multiple GA aircraft. The proposed solution brings together multiple models to improve prediction accuracy. In this paper, we are combining two models, Random Forest Regression (RFR) and Long Short-term Memory (LSTM), using k-Nearest Neighbors (k-NN), to output the final prediction based on the combined output of the individual models. This approach gives our model an edge over single-model predictions. We present the results of our meta-learner and evaluate its performance against individual models using the Mean Absolute Error (MAE), Absolute Altitude Error (AAE), and Root Mean Squared Error (RMSE) evaluation metrics. The proposed methodology for aircraft trajectory forecasting is discussed in detail, accompanied by a literature review and an overview of the data preprocessing techniques used. The results demonstrate that the proposed meta-learner outperforms individual models in terms of accuracy, providing a more robust and proactive approach to improve operational safety in GA.

关键词： Trajectory Prediction General Aviation Safety Meta-Learning Random Forest Regression Long Short-Term Memory Short to Mid-Term Trajectory Prediction Operational Safety

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

Sulfidation and selenidation of nickel nanoparticles

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Carbon Energy 2021年第4期3卷 582-589页

作者： Brian B.Lynch Andrew P.Kelliher Bryan D.Anderson Alexander Japit Michael A.Spencer Mehedi H.rizvi Mehmet F.Sarac Veronica Augustyn Joseph B.Tracy Department of Materials Science and Engineering North Carolina State UniversityRaleighNorth CarolinaUSA

NPs using elemental sulfur,1-hexadecanthiol,thiourea,trioctylphosphine sulfide,elemental selenium,and *** maintaining mole ratios of 2 mmol sulfur/selenium precursor:mmol Ni,products with phases of Ni_(3)S_(2),Ni_(9)S_(8),NiS,NiSO_(4)·6H_(2)O,Ni_(3)S_(4),Ni_(3)Se_(2),and NiSe have been *** products have voids that form through the Kirkendall effect during *** relating the chemical properties of the precursors to the phases of the products have been *** some precursors contained phosphorus,there was no significant incorporation of phosphorus in any of the *** increase of the NP size during sulfidation and selenidation is consistent with *** application of Ni sulfide and selenide NPs as electrocatalysts for the hydrogen evolution reaction is also demonstrated.

关键词： conversion chemistry electrocatalysis nanoparticles nickel selenide sulfide

Status and strategies in breeding for rust resistance in wheat

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Agricultural Sciences 2013年第6期4卷 292-301页

作者： Mudasir Hafiz Khan Asifa Bukhari Zahoor Ahmad Dar Syed Mudasir rizvi Division of Plant Breeding and Genetics Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir Srinagar India

Wheat along with rice and maize is fulfilling half of the calories demands of the world. Global Wheat production has increased tremendously since green revolution in 1960’s and helped in minimizing hunger and malnutrition. Developing countries, which consume 60% of the global wheat production, have shown a higher yield increase than the developed countries in the past [1]. It was driven by the hunger prevalence in these countries and was attributable to the introduction of high yielding and rusted resistant semi dwarf varieties developed under the collaborative efforts of International and National research systems during the last 50 years. Whereas, climate change and the emergence of new pests and diseases are threatening the food sustainability. The evolution of new races of disease pathogens like stem rust (Ug 99) is of serious concern. In order to feed the ever increasing population we have to increase wheat production at the rate 1.6% which can be achieved by developing high yielding varieties having a good tolerance level for biotic and abiotic stresses.

关键词： Leaf Rust Strip Rust Stem Rust Resistance Wheat

Rol genes enhance content of artemisinin and other secondary metabolites in Shennong hybrid of Artemisia annua

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Chinese Herbal Medicines 2019年第2期11卷 209-215页

作者： Sara Zafar Erum Dilshad Hammad Ismail Chahat Batool rizvi Bushra Mirza Department of Biochemistry. Faculty of Biological Sciences Quaid-i-Azam University Islamabad 44000 Pakistan Department of Bioinformatics and Biosciences Faculty of Health and Life Sciences Capital University of Science and Technology (CUST) Islamabad 44000 Pakistan Department of Biochemistry and Molecular Biology University of Gujarat Gujrat 50700 Pakistan

Objective: Artemisia annua is the chief source of artemisinin, a potent antimalarial agent, in which other bioactive phytochemicals are also present. Due to low levels of bioactive compounds including artemisinin and flavonoids, it is necessary to increase the level of the secondary metabolites by regulating the expression of rol genes in the ***: A hybrid variety of A. annua(Hyb1209 r, Shennong) developed by the Centre for Novel Agricultural Products, University of York, UK, was selected to produce transgenics of rolB and rolC genes. Genetic transformation was carried out via Agrobacterium tumefaciens GV3101 harboring rolB and rolC genes of Agrobacterium rhizogenes cloned separately. HPLC was used for the qualitative and quantitative analysis of flavonoids and artemisinin. Furthermore, thin layer chromatography(TLC) was also used to analyze artemisinin ***: Comparative analysis via HPLC revealed considerable enhancement in the phytochemical content of transgenic A. annua plants as compared to the wild type plant. Transgenics of rolB gene showed an average increase of 321% in rutin, 97.2% in caffeic acid, and 218.4% in myricetin, respectively. In the case of rolC gene transgenics, an average increase of 197.5% in rutin, 76.3% in caffeic acid, and 209.3%in myricetin was observed. Transgenics of rolB and rolC genes showed a 14.3%–28.6% and 2.8%–12.7% increase in artemisinin content respectively by HPLC analysis. TLC analysis showed that an average 142.2%and 110.2% enhancement in artemisinin for rolB and rolC transgenics respectively, compared with the wild type. An enhanced production of total flavonoids(average 30.2% and 25.5% increase in rolB and rolC transgenics, respectively) and total phenolics(average 34.3% and 25.8% increase in rolB and rolC transgenics, respectively) was observed as a result of transformation. Transformed A. annua plants showed improved free radical scavenging activity(average 46.5% and 29.1% increase in rolB and rolC tra

关键词： Artemisia annua L. artemisinin genetic transformation Hyb1209r rol genes

Risk Factors Associated with Birth Asphyxia in Rural District Matiari, Pakistan: A Case Control Study

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International Journal of Clinical Medicine 2014年第21期5卷 1430-1441页

作者： Farhana Tabassum Arjumand rizvi Shabina Ariff Sajid Soofi Zulfiqar A. Bhutta Department of Pediatrics and Child Health Aga Khan University Karachi Pakistan

Background: During the past two decades there has been a sustained decline in child mortality;however, neonatal mortality has remained stagnant. Each year approximately 4 million babies are born asphyxiated resulting in 2 million neonatal deaths and intrapartum stillbirths. Almost all neonatal deaths occur in developing countries, where the majority is delivered at homes with negligible antenatal care and poor perinatal services. Objectives: To identify socio-demographic and clinical risk factors associated with birth asphyxia in Matiari District of Sindh Province, Pakistan. Method: A matched case control study was conducted in Matiari District with 246 cases and 492 controls. Newborn deaths with birth asphyxia diagnosed through verbal autopsy accreditation during 2005 and 2006 were taken as cases. Controls were the live births during the same period, matched on area of residence, gender and age. Result: The factors found to be associated with birth asphyxia mortality in Matiari District of Sindh Province, Pakistan are maternal education, history of stillbirths, pregnancy complications (including smelly or excessive vaginal discharge and anemia), intrapartum complications (including fever, prolong or difficult labour, breech delivery, cord around child’s neck, premature delivery, large baby size) and failure to establish spontaneous respiration after birth. Conclusion and Recommendation: There is an immediate need to develop strategies for early identification and management of factors associated with birth asphyxia by involving women, families, communities, community health workers, health professionals and policy makers. Community health workers should be trained for emergency obstetric care, basic newborn care including preliminary resuscitation measures to provide skilled birth attendance and encourage early recognition and referral.

关键词： Birth Asphyxia Prolong Labor Antenatal Care