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Densities and excess molar volumes of mixtures containing diesel,biodiesel and alkanols at temperatures from 288.15 to 313.15 K

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Chinese Journal of Chemical Engineering 2021年第6期34卷 198-207页

作者： Sunita malik Poonam Jangra Darolia S.K.Garg V.K.Sharma Department of Chemistry Maharshi Dayanand UniversityRohtakHaryanaIndia J.C.Bose University of Science and Technology YMCAFaridabadHaryanaIndia

The present work is focusing on the synthesization and physico-chemical properties of Jatropha curcas biodiesel with diesel and *** densities of binary diesel(2)+1-alkanols(C_(3) or C_(4))(3)and ternary Jatropha curcas biodiesel(1)+diesel(2)+1-alkanols(C_(3)or C_(4))(3)blends have been reported over full range of composition at temperatures within range 288.15 to 313.15 *** densities of Jatropha curcas biodiesel(1)+diesel or 1-alkanols(C_(3) or C_(4))(2)blends have been measured at 313.15 *** molar volumes,V^E,V^E_(123)of binary and ternary blends were calculated from the measured data and the derived properties were correlated to composition using redlich-Kister equation.A reasonable agreement was found between the measured and estimated ***,densities and excess molar volumes data were reasoned to discuss molecular interactions taking into consideration effect of composition and temperature.

关键词： Jatropha curcas biodiesel Diesel Alcohols Blends Density Excess molar volumes

review of enhancement for ocean thermal energy conversion system

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Journal of Ocean Engineering and Science 2023年第5期8卷 533-545页

作者： Safaa malik Abbas HendDakhelSkhaal Alhassany David Vera Francisco Jurado Department of Electrical Engineering University of Jaen23700EPS LinaresJaenSpain

Ocean thermal energy conversion(OTEC)is a renewable energy source that uses differences in ocean water temperature between warm surface and cold depth to generate *** is an essential link in the carbon neutrality chain and one of the rising sectors of the ocean *** paper provides an overview of studies on closed thermodynamic cycles and the numerous difficulties that OTEC technology faces.A description of the thermodynamic cycles incorporating mixed or pure working fluids,as well as the implications of different working fluids on cycle efficiency were also *** in condensing and evaporating temperatures induced by variations in heat resources affect the efficiency of cycles with pure working *** strategies,such as intermediate extraction regeneration and heat recovery of ammonia-depleted solution can increase the thermal efficiency with mixed working *** addition,the impact of the ejector on the cycle’s performance is ***,the efficiency-improving strate-gies are described and *** efficiency can increase using suitable working fluids and taking steps to maximize the rate of ocean thermal *** establish which approach is the most effective,different methods have been evaluated and compared under identical operating conditions.

关键词： Ocean thermal energy conversion Organic rankine cycle Ammonia-water Liquid-vapor ejector Vapor-vapor ejector

Outcomes after combined excisional goniotomy and manual small incision cataract surgery

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International Journal of Ophthalmology(English edition) 2022年第10期15卷 1707-1713页

作者： Daniela Alvarez-Ascencio Gabriel Lazcano-Gomez malik Y Kahook Department of Glaucoma Asociación Para Evitar la Ceguera en México(APEC)Mexico City 04030Mexico Department of Ophthalmology University of Colorado School of MedicineAuroraColorado 80145United States

AIM: To report the long-term outcomes of combined excisional goniotomy and manual small incision cataract surgery(MSICS).METHODS: This is a retrospective case series of patients with open angle glaucoma and visually significant cataracts that underwent combined excisional goniotomy and MSICS with one-year follow-up. The medical history, demographic information, and clinical characteristics of each case were recorded. Data regarding changes in vision, intraocular pressure(IOP), the number of glaucoma medications, and the evolution of the disease after surgery were reported. rESULTS: Three patients, with open angle glaucoma and cataracts underwent combined excisional goniotomy and MSICS without adverse events. All patients had improvement in vision compared to baseline measurements. The range of IOP at baseline was from 14 to 18 mm Hg and decrease to a range of 10 to 14 mm Hg after one year of follow-up. Additionally, two patients also decreased their dependence on IOP-lowering medications at the last follow up visit with one patient maintaining baseline level of medication ***: A combination of excisional goniotomy and MSICS illustrates both the safety and efficacy to treat patients with visually significant cataract and glaucoma. This procedure allows for a more cost-effective surgical approach that matches the needs of resource strained territories around the globe.

关键词： excisional goniotomy microincisional glaucoma surgery manual small incision cataract surgery Kahook Dual Blade

A Deep Learning Based Sentiment Analytic Model for the Prediction of Traffic Accidents

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Computers, Materials & Continua 2023年第11期77卷 1599-1615页

作者： Nadeem malik Saud Altaf Muhammad Usman Tariq Ashir Ahmed Muhammad Babar University Institute of Information Technology PMAS Arid Agriculture UniversityRawalpindi46000Pakistan Department of Marketing Operationsand Information SystemAbu Dhabi UniversityAbu Dhabi6844United Arab Emirates College of Computer and Information Sciences Prince Sultan UniversityRiyadh11442Saudi Arabia robotics and Internet of Things Lab Prince Sultan UniversityRiyadh11442Saudi Arabia

The severity of traffic accidents is a serious global concern,particularly in developing *** the main causes and contributing circumstances may reduce the severity of traffic *** exist many machine learning models and decision support systems to predict road accidents by using datasets from different social media forums such as Twitter,blogs and *** such approaches are popular,there exists an issue of data management and low prediction *** article presented a deep learning-based sentiment analytic model known as Extra-large Network Bi-directional long short term memory(XLNet-Bi-LSTM)to predict traffic collisions based on data collected from social ***,a Tweet dataset has been formed by using an exhaustive keyword-based searching *** the next phase,two different types of features named as individual tokens and pair tokens have been obtained by using POS tagging and association rule *** output of this phase has been forwarded to a three-layer deep learning model for final *** experiment has been performed to test the efficiency of the proposed XLNet-Bi-LSTM *** has been shown that the proposed model achieved 94.2%prediction accuracy.

关键词： Accident XLNet Bi-LSTM association rule mining Twitter

Developing Engagement in the Learning Management System Supported by Learning Analytics

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Computer Systems Science & Engineering 2022年第7期42卷 335-350页

作者： Suraya Hamid Shahrul Nizam Ismail Muzaffar Hamzah Asad W.malik Department of Information System Faculty of Computer Science and Information TechnologyUniversiti MalayaKuala LumpurMalaysia Faculty of Computing and Informatics Universiti Malaysia SabahSabahMalaysia Department of Computing School of Electrical Engineering and Computer Science(SEECS)National University of Sciences and Technology(NUST)IslamabadPakistan

Learning analytics is an emerging technique of analysing student par-ticipation and *** recent COVID-19 pandemic has signiﬁcantly increased the role of learning management systems(LMSs).LMSs previously only complemented face-to-face teaching,something which has not been possible between 2019 to *** date,the existing body of literature on LMSs has not analysed learning in the context of the pandemic,where an LMS serves as the only interface between students and ***,productive results will remain elusive if the key factors that contribute towards engaging students in learning are notﬁrst identiﬁ***,this study aimed to perform an exten-sive literature review with which to design and develop a student engagement model for holistic involvement in an *** required data was collected from an LMS that is currently utilised by a local Malaysian *** model was validated by a panel of experts as well as discussions with *** is our hope that the result of this study will help other institutions of higher learning determine factors of low engagement in their respective LMSs.

关键词： Engagement analysis learning analytics learning management system student engagement

Variable stars in M37

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research in Astronomy and Astrophysics 2018年第12期18卷 111-122页

作者： Ajaz Ahmad Dar Padmakar Singh Parihar Parvej Saleh Manzoor Ahmad malik Department of Physics University of KashmirHazratbal 190006Srinagar-J&KIndia Department of Physics Islamia College of Science and CommerceHawalSrinagar-19002J&KIndia Indian Institute of Astrophysics Koramagala-560034BangaloreIndia Applied Sciences Department GowhatiUniversity of AssamIndia

The CCD photometric observations of open star cluster M37(NGC 2099) were carried out up to a limiting magnitude of V ～ 20 in both B and V filters to search for variable stars using a 2k×4k CCD and the 1.3 m telescope at the Vainu Bapu Observatory, Kavalur.A total of 314 stars were in the first observing run, out of which 60 were identified as *** out of the identified 60 variables are classified as W UMa binary *** model fitting, we used PHOEBE based on the W-D code to estimate the physical parameters of these newly detected W UMa binaries that theoretically best match the observed light curves.

关键词： techniques:photometric astronomical instrumentation methods and techniques astrometry and celestial mechanics (stars:) binaries:eclipsing

Deep Neural Network Based Visual Human Fall Detection

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Deep Neural Network Based Visual Human Fall Detection

作者： Arif Hussain malik 华南理工大学

学位级别：硕士

Currently,falls represent a significant concern in the healthcare sector due to their potential to cause both physical and mental harm,especially among the elderly *** are many research interests in human activity recognition,especially falls which is the major cause of serious injury for the *** our general public is transforming into a maturing society,it is turning out to be considerably more *** elderly persons fall without assistance and caretakers nearby,they may face catastrophic conditions such as unconsciousness and severe *** the rare event that an isolated old individual has a fall,the individual might be laying down on the ground for quite a while with practically no ***,fall detection systems,which detect a fall automatically very quickly,would be very important for lonely elderly persons as well as play an important part in the health care system for elderly *** part of helping the elderly to lead their normal lives at home,smart monitoring systems,have been proposed that detect falls and give alerts to health care *** this work,we present an instance of this system,which attempts to address the problem of fall detection through Vision-Based Deep Learning(DL)techniques.In this work,we presented an automatic vision-based fall detection system that detects falls by using motion history images to capture temporal features of a video sequence,then extracting spatial features efficiently for classification using a depthwise convolution neural network and bottleneck layer reduces the amount of data that flows through the *** Motion History Image(MHI)is used to represent depth sequence,which is a significant *** construct the MHI,we optimize the condition by applying certain image processing techniques to extract the motion information from the video frames,like frame difference,thresholding,accumulation,and *** enables us to collect more essential data,allowing us

关键词： MHI's CNN Mobile Nets Motion tracking Backpropagation

Photocatalytic removal of heavy metal ions and antibiotics in agricultural wastewater:A review

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Journal of Semiconductors 2023年第11期44卷 26-41页

作者： Jiaxin Song malik Ashtar Ying Yang Yuan Liu Mingming Chen Dawei Cao School of Physics and Electronic Engineering Jiangsu UniversityZhenjiang 212013China

In recent years,the treatment of agricultural wastewater has been an important aspect of environmental *** purpose of photocatalytic technology is to degrade pollutants by utilizing solar light energy to stimulate the migration of photocarriers to the surface of photocatalysts and occur reduction-oxidation reaction with pollutants in agricultural *** technology has the characteristics of high efficiency,sustainability,low-energy and free secondary *** is an environmental and economical method to recover water quality that only needs *** this paper,the mechanism and research progress of photocatalytic removal of heavy metal ions and antibiotics from agricultural water pollution were reviewed by combining photocatalytic degradation process with agricultural treatment *** mechanism of influencing factors of photocatalytic degradation efficiency was discussed in detail and corresponding strategies were proposed,which has certain reference value for the development of photocatalytic degradation.

关键词： photocatalysis agricultural pollution water quality remediation heavy metals antibiotics

reabsorption of iron into acutely damaged rat liver:A role for ferritins

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World Journal of Gastroenterology 2017年第41期23卷 7347-7358页

作者： Ihtzaz Ahmed malik Jorg Wilting Giuliano ramadori Naila Naz Institute of Anatomy and Cell Biology University Medical Center Department of Gastroenterology and Endocrinology University Medical Center Faculty of Life Sciences The University of Manchester

AIM To studied iron metabolism in liver, spleen, and serum after acute liver-damage, in relation to surrogate markers for liver-damage and *** rats received intraperitoneal injection of the hepatotoxin thioacetamide(TAA), and were sacrificed regularly between 1 and 96 h thereafter. Serum levels of transaminases and iron were measured using conventional laboratory assays. Liver tissue was used for conventional histology, immunohistology, and iron staining. The expression of acute-phase cytokines, ferritin light chain(FTL), and ferritin heavy chain(FTH)was investigated in the liver by q rT-PCr. Western blotting was used to investigate FTL and FTH in liver tissue and serum. Liver and spleen tissue was also used to determine iron *** After a short initial decrease, iron serum concentrations increased in parallel with serum transaminase(aspartate aminotransferase and alanine aminotransferase) levels, which reached a maximum at 48 h, and decreased thereafter. Similarly, after 48 h a significant increase in FTL, and after 72 h in FTH was detected in serum. While earliest morphological signs of inflammation in liver were visible after 6 h, increased expression of the two acute-phase cytokines IFN-γ(1 h) and IL-1β(3 h) was detectable earlier, with maximum values after 12-24 h. Iron concentrations in liver tissue increased steadily between 1 h and 48 h, and remained high at 96 h. In contrast, spleen iron concentrations remained unchanged until 48 h, and increased mildly thereafter(96 h). Although tissue iron staining was negative, hepatic FTL and FTH protein levels were strongly elevated. Our results reveal effects on hepatic iron concentrations after direct liver injury by TAA. The increase of liver iron concentrations may be due to the uptake of a significant proportion of the metal by healthy hepatocytes, and only to a minor extent by macrophages, as spleen iron concentrations do not increase in parallel. The temporary increase of iron, FTH an

关键词： Iron metabolism Ferritin Liver Cytokines Acute liver damage