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Chinese Chemical Letters 2015年第10期26卷 1273-1277页

作者： yogesh B.Wagh yogesh A.Tayade Swapnil A.Padvi Bhupesh S.Patil Nilesh B.Patil Dipak S.Dalal School of Chemical Sciences North Maharashtra University

A rapid, one-pot and highly efficient protocol for the synthesis of pharmaceutically interesting functionalized 2-amino-3-cyano-4H-pyran and spirooxindole derivatives has been developed using commercially available Cs F as a catalyst in the reaction of malononitrile and aryl aldehydes or isatins with 1,3-cyclohexanediones. The major advantages of this methodology are excellent yield at ambient temperature, very short reaction time（5–10 min）, and use of an inexpensive catalyst.

关键词： Cesium fluoride 2-Amino-3-cyano-4H-pyrans Spirooxindoles Rapid synthesis Multicomponent reactions

A study of knowledge,attitude and practices about otitis media in parents in Navi-Mumbai

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Journal of Otology 2021年第2期16卷 89-94页

作者： yogesh G.Dabholkar Anmol Wadhwa Atul Deshmukh Department of ENT School of MedicineD.Y.Patil UniversityNavi MumbaiIndia Centre for Interdisciplinary Research D.Y.Patil UniversityNavi MumbaiIndia

Although otitis media poses a serious health risk in developing countries,being a frequent occurrence in children below five years of age,parental awareness and practices about otitis media have not been adequately *** cross-sectional study was undertaken in Navi Mumbai schools,from October 2019 to December 2019,wherein parents with children<5 years of age answered a questionnaire which gathered data on their knowledge,attitude and practices about otitis media in their ***-square tests,Cramer’s V were used to study association between gender,age-group and education of parents with their knowledge,practice and attitude about otitis *** of 425 valid responses,overall most parents displayed adequate knowledge(77%),positive attitude(61%)and good care-seeking practices(70%).There was a positive correlation of knowledge and practice with level of *** study shows acceptable levels of knowledge,attitude and practices in parents about otitis *** who did not seek treatment from health centre attributed the behaviour to poverty,ignorance and lack of health *** positive correlation of knowledge and practices with level of education highlights the importance of role of education in modifying parental awareness and care seeking *** findings call for a need to further strengthen community-based healthcare and improve parental confidence in healthcare services for early detection and adequate treatment of otitis media.

关键词： Otitis media Middle ear infections Children Knowledge Attitude Practices

A novel reconfiguration of the solar array to enhance peak power and efficiency under partial shading conditions:experimental validation

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Clean Energy 2023年第4期7卷 824-842页

作者： Vijay Laxmi Mishra yogesh K.Chauhan K.S.Verma EED KNIT SultanpurU.P.Pin-228118India

Non-homogeneous irradiation patterns and temperature levels immensely affect the performance of solar photovoltaic *** shading conditions on solar arrays reduce the peak power and *** paper provides a new remedy called a novel Ramanujan reconfiguration(NRR)to eliminate this physical shading problem in solar photovoltaic *** is a static-based reconfigured technique that is built using a three-diode model with the help of the MATLAB®/Simulink®*** special feature of the proposed NRR technique is that when shade occurs on the solar modules,it gets realigned in a particular row,column,diagonal,corner,centre and middle peripheral *** helps over a wide range of shade dispersion on the solar *** novel topology is tested against the conventional total cross-tied(TCT)model and recently introduced advanced reconfigured models,namely odd–even topology(OET)and Kendoku topology(KDT).The results are tested under certain shading *** proposed NRR technique increases the peak power by 4.45,2.15 and 2.17 W under the first shading condition regarding TCT,OET and *** efficiency is improved by 0.51–2.18%under the third shading condition compared with other considered models in this *** addition,NRR leads to smooth output curves under the second,third and fourth shading conditions,effectively mitigating the local power *** experimental results show the proposed enhanced performance of the novel model against the other *** Abstract Remedy for physical problem correlated with solar photovoltaics Comparison with traditional and recent solar models Conclusion:NRR has effectively handled the problem related with solar *** has improved the efficiency up to 31.44%under ***,smooth output curves under S2-S4 shows its effectiveness in mitigating the local power *** power gain at 3.94%under S4 is achieved by novel ***-time verification proves the supremacy of novel proposed model over o

关键词： efficiency partial shading conditions peak power Ramanujan reconfiguration solar array total cross-tied three-diode model

Physical Characterization of Ionic Liquid-Modified Polyvinyl Alcohol and Sodium Thiocyanate Polymer Electrolytes for Electrochemical Double-Layer Capacitor Application

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Journal of Shanghai Jiaotong university(Science) 2023年第2期28卷 161-171页

作者： AZEMTSOP Manfo Theodore MEHRA Ram Mohan KUMAR yogesh GUPTA Meenal Material Research Laboratory Department of PhysicsSBSRSharda UniversityGreater Noida 201310India Department of Electronics and Communication Engineering Sharda UniversityGreater Noida 201310India Department of Physics Atma Ram Sanatan Dharma CollegeUniversity of DelhiNew Delhi 110021India

Novel gel polymer electrolytes(GPEs)composed of polyvinyl alcohol(PVA)and sodium thiocyanate were developed via a solution casting *** ionic liquid(IL),1-ethyl-3-methyl-imidazolium tricyanomethanide([EMIM][TCM]),was doped into a polymer–salt complex system(PVA+NaSCN)to further enhance the ***-doped polymer electrolyte(ILDPE)films were characterized using X-ray diffraction(XRD),polarized optical microscopy(POM),Fourier-transform infrared(FTIR)spectroscopy,and conductivity *** was performed to check the degree of crystallinity and amorphicity of the ILDPE films,and the amorphicity of GPEs increased with the increase of the IL *** was employed to evaluate the changes in the surface morphology due to the inclusion of salt and IL in the *** compositional nature of the GPE films was examined via FTIR *** electrical and electrochemical properties were characterized by cyclic voltammetry and electrochemical impedance *** maximum conductivity for the GPE film was estimated to be 1.10×10^(-5) S/cm for 6%(mass fraction)of IL in the polymer–salt *** ionic transference number was approximately *** electrochemical double-layer capacitor(EDLC)was built from optimized GPE films and reduced graphene oxide-based *** specific capacitance calculated from the cyclic voltammograms of the EDLC cells was 3 F/g.

关键词： ionic conductivity ionic liquid(IL) mobility transference number cyclic voltammetry polymer electrolyte

A novel sub 20 nm single gate tunnel field effect transistor with intrinsic channel for ultra low power applications

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Journal of Semiconductors 2016年第5期37卷 30-34页

作者： Pranav Kumar Asthana yogesh Goswami Bahniman Ghosh Department of Electrical Engineering Indian Institute of Technology Kanpur Microelectronics Research Center University of Texas at Austin

We propose a nanoscale single gate ultra thin body intrinsic channel tunnel field effect transistor using the charge plasma concept for ultra low power applications. The characteristics of TFETs （having low leakage） are improved by junctionless TFETs through blending advantages of Junctionless FETs （with high on current）. We further improved the characteristics, simultaneously simplifying the structure at a very low power rating using an InAs channel. We found that the proposed device structure has reduced short channel effects and parasitics and provides high speed operation even at a very low supply voltage with low leakage. Simulations resulted in Iovv of - 9 × 10-16A/um, IoN of ,-20uA/um, ION/IoFF of--2× 1010, threshold voltage of 0.057 V, subthreshold slope of 7 mV/dec and DIBL of 86 mV/V for PolyGate/HfO2/InAs TFET at a temperature of 300 K, gate length of 20 nm, oxide thickness of 2 nm, film thickness of 10 nm, low-k spacer thickness of 10 nm and VDD of 0.2 V.

关键词： band-to-band tunneling (BTBT) tunnel field effect transistor (TFET) junctionless tunnel field effecttransistor (JLTFET) ION/IOFF ratio low power

Dominating expression of negative regulatory factors downmodulates major histocompatibility complex Class-Ⅱexpression on dendritic cells in chronic hepatitis C infection

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World Journal of Gastroenterology 2016年第22期22卷 5173-5182页

作者： Shallu Tomer yogesh K Chawla Ajay Duseja Sunil K Arora Department of Immunopathology Postgraduate Institute of Medical Education and Research Department of Hepatology Postgraduate Institute of Medical Education and Research

AIM: To elucidate the molecular mechanisms leading to development of functionally impaired dendritic cells(DCs) in chronic hepatitis C(CHC) patients infected with genotype 3 ***: This prospective study was conducted on the cohorts of CHC individuals identified as responders or non-responders to antiviral therapy. Myeloid DCs were isolated from the peripheral blood of each subject using CD1c(BDCA1)+ DC isolation Kit. Monocytes from healthy donor were cultured with DC growth factors such as IL-4 and GM-CSF either in the presence or absence of hepatitis C virus(HCV) viral proteins followed by LPS stimulation. Phenotyping was done by flowcytometry and gene expression profiling was evaluated by real-time ***: Non-responders [sustained virological response(SVR)-ve] to conventional antiviral therapy had significantly higher expression of genes associated with interferon responsive element such as IDO1 and PD-L1(6-fold) and negative regulators of JAK-STAT pathway such as SOCS(6-fold) as compared to responders(SVR+ve) to antiviral therapy. The downregulated genes in non-responders included factors involved in antigen processing and presentation mainly belonging to major histocompatibility complex(MHC) Class-Ⅱ family as HLA-DP, HLA-DQ(2-fold) and superoxide dismutase(2-fold). Cells grown in the presence of HCV viral proteins had genes downregulated for factors involved in innate response, interferon signaling, DC maturation and co-stimulatory signaling to T-cells, while the genes for cytokine signaling and Toll-like receptors(4-fold) were upregulated as compared to cells grown in absence of viral ***: Underexpressed MHC class-Ⅱ genes and upregulated negative regulators in non-responders indicate diminished capacity to present antigen and may constitute mechanism of functionally defective state of DCs.

关键词： Dendritic cells Hepatitis C Non-responders Negative regulators Major histocompatibility complex Class-Ⅱ genes

Partial genomic organization of ribosomal protein S7 gene from malaria vector Anopheles stephensi

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Insect Science 2007年第2期14卷 101-106页

作者： RAJNIKANT DIXIT SARITA DIXIT UPAL ROY yogesh S.SHOUCHE SURENDRA GAKHAR Department of Biosciences Maharshi Dayanand University RohtakPune University Campus Pune India National Centre for Cell Science Pune University Campus Pune India

In this study, we describe the partial genomic organization of ribosomal protein S7 gene isolated from the mosquito Anopheles stephensi. Initially a 558 bp partial cDNA sequence was amplified as precursor mRNA sequence containing 223 bp long intron. 5＇ and 3＇ end sequences were recovered using end specific rapid amplification of cDNA ends （RACE） polymerase chain reaction. The full-length cDNA sequence was 914 nucleotide long with an open reading frame capable of encoding 192 amino acid long protein with calculated molecular mass of 22174 Da and a pI point of 9.94. Protein homology search revealed 〉75% identity to other insect＇s S7 ribosomal proteins. Analysis of sequence alignment revealed several highly conserved domains, one of which is related to nuclear localization signal （NLS） region of human rpS7. Interestingly, intron nucleotide sequence comparison with A. gambiae showed a lesser degree of conservation as compared to coding and untranslated regions. Like this, early studies on the genomic organization and cDNA/ Expressed sequence tag analysis （EST） could help in genome annotation ofA. stephensi, and would be likely to be sequenced in the future.

关键词： Anopheles malaria mosquito ribosomal protein vector

Automatic License Plate Recognition System for Vehicles Using a CNN

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Computers, Materials & Continua 2022年第4期71卷 35-50页

作者： Parneet Kaur yogesh Kumar Shakeel Ahmed Abdulaziz Alhumam Ruchi Singla Muhammad Fazal Ijaz Department of Computer Science Chandigarh Group of CollegesLandran140307India Department of Computer Science College of Computer Sciences and Information TechnologyKing Faisal UniversityAl-AhsaSaudi Arabia Department of Research InnovationsSponsored Projects&EntrepreneurshipChandigarh Group of CollegesLandran140307India Department of Intelligent Mechatronics Engineering Sejong UniversitySeoul05006Korea

Automatic License Plate Recognition(ALPR)systems are important in Intelligent Transportation Services(ITS)as they help ensure effective law enforcement and *** systems play a significant role in border surveillance,ensuring safeguards,and handling vehicle-related *** most effective approach for implementing ALPR systems utilizes deep learning via a convolutional neural network(CNN).A CNN works on an input image by assigning significance to various features of the image and differentiating them from each *** are popular for license plate character ***,little has been reported on the results of these systems with regard to unusual varieties of license plates or their success at *** present an efficient ALPR system that uses a CNN for character recognition.A combination of pre-processing and morphological operations was applied to enhance input image quality,which aids system *** system has various features,such as the ability to recognize multi-line,skewed,and multifont license *** also works efficiently in night mode and can be used for different vehicle *** overall accuracy of 98.13%was achieved using the proposed CNN technique.

关键词： Deep learning intelligent transportation services morphological convolutional neural network accuracy

Machine learning and evolutionary prediction of superhard BC-N compounds

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npj Computational Materials 2021年第1期7卷 1034-1041页

作者： Wei-Chih Chen Joanna N.Schmidt Da Yan yogesh K.Vohra Cheng-Chien Chen Department of Physics University of Alabama at BirminghamBirminghamALUSA Department of Computer Science University of Alabama at BirminghamBirminghamALUSA

We build random forests models to predict elastic properties and mechanical hardness of a compound,using only its chemical formula as *** model training uses over 10,000 target compounds and 60 features based on stoichiometric attributes,elemental properties,orbital occupations,and ionic bonding *** the models,we construct triangular graphs for B-C-N compounds to map out their bulk and shear moduli,as well as hardness *** graphs indicate that a 1:1 B-N ratio can lead to various superhard *** also validate the machine learning results by evolutionary structure prediction and density functional *** study shows that BC_(10)N,B_(4)C_(5)N_(3),and B_(2)C_(3)N exhibit dynamically stable phases with hardness values>40 GPa,which are superhard materials that potentially could be synthesized by low-temperature plasma methods.

关键词： prediction moduli occupation

All-optical active THz metasurfaces for ultrafast polarization switching and dynamic beam splitting

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Light(Science & Applications) 2018年第1期7卷 766-774页

作者： Longqing Cong yogesh Kumar Srivastava Huifang Zhang Xueqian Zhang Jiaguang Han Ranjan Singh Division of Physics and Applied Physics School of Physical and Mathematical SciencesNanyang Technological University21 Nanyang LinkSingapore 637371Singapore Centre for Disruptive Photonic Technologies The Photonics InstituteNanyang Technological University50 Nanyang AvenueSingapore 639798Singapore Center for Terahertz Waves and College of Precision Instrument and Optoelectronics Engineering Key Laboratory of Optoelectronic Information TechnologyMinistry of EducationTianjin University300072 TianjinPeople’s Republic of China

Miniaturized ultrafast switchable optical components with an extremely compact size and a high-speed response will be the core of next-generation all-optical devices instead of traditional integrated circuits,which are approaching the bottleneck of Moore’s *** have emerged as fascinating subwavelength flat optical components and devices for light focusing and holography ***,these devices exhibit a severe limitation due to their natural passive *** we introduce an active hybrid metasurface integrated with patterned semiconductor inclusions for all-optical active control of terahertz *** modulation of polarization states and the beam splitting ratio are experimentally demonstrated on a time scale of 667 *** scheme of hybrid metasurfaces could also be extended to the design of various free-space all-optical active devices,such as varifocal planar lenses,switchable vector beam generators,and components for holography in ultrafast imaging,display,and high-fidelity terahertz wireless communication systems.

关键词： polarization optical beam