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Rational manipulation of electrolyte to induce homogeneous SEI on hard carbon anode for sodium-ion battery

Journal of Energy Chemistry 2024年第7期94卷 414-429页

作者： Lu Liu Lingling Xiao Zhi Sun Shahid Bashir ramesh Kasi Yonghong Gu ramesh subramaniam Research Center for Clean Utilization Technology Phosphorous Resources Hubei Three Gorges PolytechnicYichang 443000HubeiChina Department of Physics Faculty of ScienceUniversiti MalayaKuala Lumpur 50603Malaysia UM Power Energy Dedicated Advanced Centre(UMPEDAC) Level 4Wisma R&DUniversiti MalayaKuala Lumpur 59990Malaysia Department of Chemistry Saveetha School of EngineeringInstitute of Medical and Technical ScienceSaveetha UniversityChennai 602105TamilnaduIndia

Sodium-ion batteries (SIBs) have great potential to be the next major energy storage devices due to their obvious advantages and developing advanced electrodes and electrolytes is urgently necessary to promote its future ***,hard carbon as a state-of-the-art anode of SIBs still suffers from the low initial Coulomb efficiency and unsatisfactory rate capability,which could be improved by forming desirable solid electrolyte interphases (SEI) to some ***,the chemistry and morphology of these interfacial layers are fundamental parameters affecting the overall battery operation,and optimizing the electrolyte to dictate the quality of SEI on hard carbon is a key ***,this review summarizes the recent research on SEI design by electrolyte manipulation from solvents,salts,and *** also presents some potential mechanisms of SEI formation in various electrolyte ***,the current advanced characterization techniques for electrolyte and SEI structure analyses have been comprehensively ***,current challenges and future perspectives of SEI formation on hard carbon anode for SIBs are provided from the viewpoints of its compositions,evolution processes,structures,and characterization techniques,which will promote SEI efficient manipulation and improve the performance of hard carbon,and further contribute to the development of SIBs.

关键词： SEI Electrolyte optimization Hard carbon Electrochemical performance Sodium-ion batteries

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Why is graphene an extraordinary material? A review based on a decade of research

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Frontiers of Materials Science 2022年第2期16卷 1-39页

作者： Sachin Sharma Ashok KUMAR Shahid BASHIR Kasi ramesh subramaniam ramesh Centre for Ionics University of Malaya Department of PhysicsFaculty of ScienceUniversiti MalayaKuala Lumpur 50603Malaysia Higher Institution Centre of Excellence(HICoE) UM Power Energy Dedicated Advanced Centre(UMPEDAC)Level 4Wisma R&DUniversiti MalayaJalan Pantai BaharuKuala Lumpur 59990Malaysia

During this decade,graphene which is a thin layer of carbon material along at ease with synthesis and functionalization has become a hot topic of research owing to excellent mechanical strength,very good current density,high thermal conductivity,superior electrical conductivity,large surface area,and good electron *** research on graphene has exponentially accelerated specially when Geim and Novoselov developed and analyzed *** this basis,for industrial application,researchers are exploring different techniques to produce high-quality ***,reviewed in this article is a brief introduction to graphene and its derivatives along with some of the methods developed to synthesize graphene and its prospective applications in both research and *** this work,recent advances on applications of graphene in various fields such as sensors,energy storage,energy harvesting,high-speed optoelectronics,supercapacitors,touch-based flexible screens,and organic light emitting diode displays have been summarized.

关键词： graphene graphene oxide electrochemical sensor fuel cell supercapacitor dye-sensitized fuel cell lithium battery energy storage

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Laboratory Implementation of Direct Torque Controller based Speed Loop Pseudo Derivative Feedforward Controller for PMSM Drive

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CES Transactions on Electrical Machines and Systems 2024年第1期8卷 12-21页

作者： Prabhakaran Koothu Kesavan Umashankar subramaniam Dhafer J.Almakhles IEEE Renewable Energy Laboratory Department of Electrical EngineeringPrince Sultan UniversityRiyadh 12435Saudi Arabia

This paper,evaluate the effectiveness of a proposed speed loop pseudo derivative feedforward(PDFF)controller-based direct torque controller(DTC)for a PMSM drive against the performance of existing PI speed controller-based DTC and hysteresis current controller(HCC).The proposed PDFF-based speed regulator effectively reduces oscillation and overshoot associated with rotor angular speed,electromagnetic torque,and stator *** case studies,one using forward-to-reverse motoring operation and the other involving reverse-to-forward braking operation,has been validated to show the effectiveness of the proposed control *** proposed controller's superior performance is demonstrated through experimental verification utilizing an FPGA controller for a 1.5 kW PMSM drive laboratory prototype.

关键词： Direct torque control Pseudo derivative feedforward controller Permanent magnet synchronous motor(PMSM)

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Improved Integrated Deep Model for Pap-Smear Cell Analysis

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Journal of Systems Science and Information 2024年第1期12卷 113-124页

作者： Somasundaram DEVARAJ Nirmala MADIAN Gnanasaravanan subramaniam Rithaniya CHELLAMUTHU Muralitharan KRISHANAN School of Electronics Engineering Vellore Institute of TechnologyVellore 632014India Department of Biomedical Engineering Dr.N.G.P Institute of TechnologyCoimbatore 641045India Karunya Institute of Technology and Sciences Coimbatore 641114India Department of Computer Science Institute of Mathematical ScienceSungkyunkwan UniversitySuwon 16419South Korea

Cervical cancer is the fourth most common malignancy to strike a woman *** discovered early enough,it can be effectively *** there is a chance of error owing to human error,the Pap smear is a good tool for first screening for cervical *** also takes a lot of time and effort to *** aim of this study was to reduce the possibility of error by automating the process of classifying cervical cancer using Pap smear *** the purpose of this study,dual convolution neural networks with LSTM were employed to classify images due to deep learning approaches inspire distinct features and powerful classifiers for many computer vision *** proposed deep learning model based on convolution neural networks(CNN)with the long short-term memory(LSTM)network is to learn features which give better recognition *** overall model is known as *** which‘smear’indicates‘pap-smear cancer cells’and‘net’refers to neural *** parameters such as,Accuracy,Precision,Recall,Accuracy,Sensitivity,and Specificity are used to validate the *** proposed method provides the improved accuracy of 99.57 percentage for classification of the pap-smear *** proposed approaches demonstrate the effectiveness of our contributions by testing and comparing with the state-of-the-art techniques.

关键词： pap-smear deep learning convolution neural network smear-net

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Pro-fertility effect of Ficus carica fruit extract in streptozotocin-induced male rats

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Asian pacific Journal of Reproduction 2024年第1期13卷 34-41页

作者： Mat Noor Mahanem subramaniam Puvaratnesh AbuBakar Umarqayum Shamsusah Nadia A Department of Biological Sciences and Biotechnology Faculty of Science and TechnologyUniversiti Kebangsaan Malaysia43600 BangiSelangorMalaysia Institute of Biological Sciences Faculty of ScienceUniversity Malaya50603 Kuala LumpurMalaysia Department of Earth Sciences and Environment Faculty of Science and TechnologyUniversiti Kebangsaan MalaysiaBangi 43600Malaysia

Objective:To explore the impact of Ficus carica fruit aqueous extract on fertility parameters in streptozotocin(STZ)-induced male ***:Twenty-four male Sprague-Dawley rats were divided into four different *** groups except a normal control group were induced with 50 mg/kg of streptozotocin(STZ)intravenously to induce diabetes.A positive control group was treated with an antidiabetic drug,metformin(500 mg/kg)whereas a negative control group remained untreated throughout the ***,another diabetic rat group received treatment with 400 mg/kg of aqueous Ficus carica fruit *** in the treatment group were administered Ficus carica fruit aqueous extract daily through forcefeeding via oral gavage for a 21-day *** included the sperm quality(count,motility and morphology),histology of the testes,serum testosterone and fasting blood glucose(FBG)***:The FBG level of the Ficus carica-treated rats exhibited a significant decrease compared to the negative control group(P<0.05).Sperm quality analysis also indicated that the aqueous Ficus carica extract had significant positive effects on sperm count and motility(P<0.05).The histology of the testes in Ficus caricatreated rats revealed an improved cell arrangement in the germinal cell ***,serum testosterone level showed an increment in the Ficus carica treatment group in comparison to the negative control ***:Our findings provide compelling evidence for the profertility and anti-hyperglycemic properties of aqueous Ficus carica fruit extract in diabetic-induced male rats.

关键词： Ficus carica fruit Male fertility parameter Diabetes mellitus Anti-hyperglicemic

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Robotic complete mesocolic excision for right colon cancer:Learning curve,training,techniques,approach,platforms,and future perspectives

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Laparoscopic, Endoscopic and Robotic Surgery 2024年第2期7卷 53-59页

作者： Guglielmo NiccolòPiozzi Sentilnathan subramaniam Rauand Duhoky Werner Hohenberger Jim S.Khan Department of Colorectal Surgery Portsmouth Hospitals University NHS TrustPortsmouthUK Colorectal Surgery Unit Department of General SurgeryHospital SelayangSelangorMalaysia Faculty of Technology University of PortsmouthPortsmouthUK Department of General Surgery Universitatsklinikum ErlangenErlangenGermany Faculty of Science and Health University of PortsmouthPortsmouthUK

Colon cancer has the fifth highest incidence worldwide and has the sixth highest *** with rectal cancer,colon cancer currently has the worst 5-year overall survival for patients with stage II and III *** mesocolic excision has been developed as a standardized and optimized surgical technique for the excision of colon *** technique has traditionally been performed through an open approach since laparoscopy is generally considered technically *** robotic approach has been slowly implemented for colon cancer,but the newest robotic platforms allow for a safer and optimized approach for right colon *** robotic approaches have been developed and *** expansion of the current robotic platform ecosystem is gradually providing new outputs in the application of the robotic approach to complete mesocolic *** review gains an oversight of existing literature on robotic complete mesocolic excision for right colon cancer(learning curve,training,techniques,approach,platforms,and future perspectives).

关键词： Robotic surgery Complete mesocolic excision Robotic platform Colon cancer Colorectal surgery

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A Machine Learning Approach for MRI Brain Tumor Classification

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Computers, Materials & Continua 2017年第2期53卷 91-108页

作者： Ravikumar Gurusamy Vijayan subramaniam Assistant Professor/ECE Vivekanandha Institute of Engineering and Technology for Women ElayampalamTiruchengodeNamakkal(Dt)-637205 Principal Surya Engineering CollegeMettukkadaiErode-638107.

A new method for the denoising,extraction and tumor detection on MRI images is presented in this *** images help physicians study and diagnose diseases or tumors present in the *** work is focused towards helping the radiologist and physician to have a second opinion on the *** ambiguity of Magnetic Resonance(MR)image features is solved in a simpler *** MRI image acquired from the machine is subjected to analysis in the *** real-time data is used for the *** preprocessing is performed using various filters for noise *** de-noised image is segmented,and the feature extractions are *** are extracted using the wavelet *** compared to other methods,the wavelet transform is more suitable for MRI image feature *** features are given to the classifier which uses binary tree support vectors for *** classification process is compared with conventional methods.

关键词： MRI image brain pathology K-Means algorithm Feature extraction Wavelet transform SVM Neural network K nearest algorithm.

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Heterocyclic benzoxazole-based liquid crystals:Synthesis and mesomorphic properties

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Chinese Chemical Letters 2011年第10期22卷 1191-1194页

作者： Sie Tiong Ha Kok Leei Foo ramesh T.subramaniam Masato M.Ito S.Sreehari Sastry Siew Teng Ong Department of Chemical Science Faculty of ScienceUniversiti Tunku Abdul RahmanJln UniversitiBandar Barat31900 KamparPerakMalaysia Center for Ionics University Malaya Department of Physics Faculty of ScienceUniversity of Malaya50603 Kuala LumpurMalaysia Faculty of Engineering Soka University1-236 Tangi-choHachiojiTokyo 192-8577Japan Department of Physics Acharya Nagarjuna UniversityNagarjuna Nagar 522 510India

New Schiff base liquid crystals containing benzoxazole core and alkanoyloxy chain at the end group of the molecules （C_（n-1）H_（2n-1）COO-,n=14,16,18） was *** present compounds are enantiotropic smectic A liquid *** was also found that the end groups of the molecules and polar chloro substituent at the benzoxazole fragment had effect on the mesomorphic properties.

关键词： Schiff bases Benzoxazoles Mesomorphic Smectic A Structure-property relationship

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Synthesis and mesomorphic evaluation of new calamitic liquid crystals containing benzothiazole core

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Chinese Chemical Letters 2011年第5期22卷 619-622页

作者： Teck Ming Koh Sie Tiong Ha Teck Leong Lee Siew Ling Lee Guan Yeow Yeap Hong Cheu Lin ramesh T.subramaniam Department of Science Faculty of Engineering & ScienceUniversiti Tunku Abdul RahmanJln Genting KlangSetapak53300 Kuala Lumpur.Malaysia Department of Chemistry National University of SingaporeSingapore 117543Singapore Department of Chemical Science Faculty of ScienceUniversiti Tunku Abdul RahmanJln UniversitiBandar Barat31900 KamparPerakMalaysia Ibnu Sina Institute for Fundamental Science Studies Universiti Teknologi Malaysia81310 UTM SkudaiJohorMalaysia Liquid Crystal Research Laboratory School of Chemical SciencesUniversiti Sains Malaysia11800 MindenPenangMalaysia Department of Materials Science & Engineering National Chiao Tung UniversityHsinchu 300Taiwan Center for Ionics University Malaya Department of Physics Faculty of ScienceUniversity of Malaya50603 Kuala LumpurMalaysia

The design and synthesis of new calamitic benzothiazole-based liquid crystals,2-[4-（4-alkyloxybenzoyloxy）-phenyl]ben-zothiazoles are *** target compound was characterized using spectroscopic techniques,such as FT-IR,NMR（~1H and ^（13）C）,microanalysis and *** liquid crystalline behaviours of these compounds were thoroughly examined by differential scanning calorimetry and polarizing optical microscope *** materials exhibited enantiotropic nematic phase with high thermal stability（168℃）.Smectic A phase starts to emerge as monotropic（metastable） phase from C10 member and changes into enantiotropic（stable） phase from C12 and persists up to C16 members.

关键词： Benzothiazole Alkoxy chain Nematic Smectic A Liquid crystal

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Clays as dietary supplements for swine:A review

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Journal of Animal Science and Biotechnology 2016年第1期7卷 41-49页

作者： Mohana Devi subramaniam In Ho Kim Department of Animal Resource and Science Dankook University

Clays are crystalline, hydrated aluminosilicate molecules composed of alkali and alkaline earth cations along with small amounts of various other elements. The best-known are montmorillonite, smectite, illite, kaolinite, biotite and clinoptilolite. The molecules in these clays are arranged in three-dimensional structures creating internal voids and channels capable of trapping a wide variety of molecules. As a result of this structure, clay minerals are regarded as a simple and effective tool for the prevention of the negative effects of many toxic compounds. Dietary supplementation with clays has been shown to improve weight gain and feed conversion in pigs. Where improvements in performance have been noted, one of the most likely explanations for the improvement is the fact clays increase nutrient digestibility. Clays reduce the speed of passage of feed along the digestive tract which allows more time for digestion. Feeding clays also causes morphological changes in the intestina mucosa such as an increase in villus height and an increase in the villus height to crypt depth ratio. These changes increase the surface area of the gastrointestinal tract thus increasing nutrient digestibility, Several studies have indicated that feeding clay reduces the incidence, severity and duration of diarrhea in pigs. The mechanism for the reduction in diarrhea is likely due to increases in the numbers of Bifidobacteria and Lactobacillus and decreases in Clostridia and E. coil in the small intestine of pigs fed clays. In addition, the numbers of pigs born alive and weaned, birth weight and weaning weight have been shown to be higher for sows fed clays. Several studies have indicated that clays can help mitigate the effects of mycotoxins. The aim of the present review is to focus on the various clays which have been given attention in recent research and to discuss their potential to improve pig performance.

关键词： Animal production Clay Clinoptilolite Feed additive Montmorillonite Zeolite

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