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Soft Nanoscience Letters 2013年第1期3卷 1-6页

作者： Rasha Ata Alaa Gurum.rthy Hegde arun m.Isloor Boodappa Chandrakantha Shridhar m.lladi m.m. Yusoff Lachezar Kom.tov Faculty of Industrial Sciences and Technology University Malaysia Pahang 26300 Gambang Malaysia Liquid Crystal Group Department of Physics Kemivagen 9 University of Goteborg Goteborg Sweden SE-412 96 Organic Chem.stry Division De- partment of Chemistry National Institute of Technology Karnataka Surathkal Mangalore-575 025 India Syngene International Ltd. Biocon park plot No 2 & 3 Bommasandra 4th Phase Jigani Link Rd Bangalore 560 100

In order to investigate the photoalignm.nt m.chanism.of nem.tic liquid crystals on an oxadiazoles, new 1,3,4-oxadiazole having fluorine atom. as term.nal, as well as sideways was synthesized. Linearly polarized UV light shined in these nano-layered film. causes the preferential direction of the liquid crystal m.lecules either perpendicular (in the case of term.nal fluoro substitution) or parallel (in the case of sideways fluorine substitution) to the polarized direction. A powerful indication about the relationship between m.lecular structure and alignm.nt properties where just by changing fluorine atom.can change the entire alignm.nt direction is proposed. Such inform.tion is indispensable for the design and synthesis of photoalignm.nt m.terials for liquid crystal displays of high quality.

关键词： Liquid Crystals Fluorine Parallel Perpendicular Irradiation

Efficient Perform.nce Analysis of Spectrum.Sensing for Cascaded m.ltihop Network over Nagakam.-m.Fading Channels

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Engineering（科研） 2014年第2期6卷 71-77页

作者： Deepti Kakkar arun Khosla m.in Uddin Departm.nt of Electronics and Com.unication Dr B R Ambedkar NIT Jalandhar India Jam.a Ham.ard University Delhi India

Perform.nce evaluation of spectrum.sensing in infrastructure based m.ltihop network is very hard to achieve because of the adverse effects of channel fading. In this paper, perform.nce of a m.ltihop link is studied over Nakagam.-m.distribution. It provides the exact theoretical m.thodology for the perform.nce analysis of spectrum.sensing by evaluating detection probability. Using a cascaded m.ltihop m.del, the end-to-end Signal to Noise Ratio (SNR) is given over Nakagam.-m.distribution. In the analysis, m.ltihop m.del based on relays are considered over independent and not identically distributed (i.n.i.d) wireless channels. Sim.lation results show the effect of increase in num.er of hops on probability of detection for m.ltihop links. Subsequent to the thorough fading severity analysis, it has been accom.lished that spectrum.hole detection is m.re crucial at lower SNR values with large num.er of hops.

关键词： Spectrum Sensing Energy Detection Nakagam.-m Wireless Link Probability of Detection Relay Protocol Cascaded m.ltihop Com.unication

m.chine-learned im.urity level prediction for sem.conductors:the exam.le of Cd-based chalcogenides

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npj Com.utational m.terials 2020年第1期6卷 1346-1359页

作者： arun m.nnodi-Kanakkithodi m.chael Y.Toriyam. Fatih G.Sen m.chael J.Davis Robert F.Klie m.ria K.Y.Chan Center for Nanoscale m.terials Argonne National LaboratoryArgonneIL 60439USA Chem.cal Sciences and Engineering Division Argonne National LaboratoryArgonneIL 60439USA Departm.nt of Physics University of Illinois at ChicagoChicagoIL 60607USA

The ability to predict the likelihood of im.urity incorporation and their electronic energy levels in sem.conductors is crucial for controlling its conductivity,and thus the sem.conductor’s perform.nce in solar cells,photodiodes,and *** difficulty and expense of experim.ntal and com.utational determ.nation of im.urity levels m.kes a data-driven m.chine learning approach *** this work,we show that a density functional theory-generated dataset of im.urities in Cd-based chalcogenides CdTe,CdSe,and CdS can lead to accurate and generalizable predictive m.dels of defect properties.

关键词： sem.conductors prediction im.urity

Sem.conductor m.tal oxide com.ounds based gas sensors： A literature review

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Frontiers of m.terials Science 2015年第1期9卷 14-37页

作者： Sunil Jagannath PATIL arun Vithal PATIL Chandrakant Govindrao DIGHAVKAR Kashinath Shravan THAKARE Ratan Yadav BORASE Sachin Jayaram.NANDRE Nishad Gopal DESHPANDE Rajendra Ram.as AHIRE Departm.nt of Physics S. G. Patil Arts Science & Commerce College Sakri-424304 Dist. Dhule India Departm.nt of Physics L. V. H. College Panchavati Nashik-422003 India Thin and Thick film.Laboratory M. S. G. College Malegaon Camp Malegaon-423105 Dist. Nashik India Departm.nt of Physics Uttamrao Patil College Dahivel Dist-Dhule India Departm.nt of Physics Shivaji University Kolhapur-416004 India

This paper gives a statistical view about im.ortant contributions and advances on sem.conductor m.tal oxide （Sm.） com.ounds based gas sensors developed to detect the air pollutants such as liquefied petroleum.gas （LPG）, H2S, NH3, CO2, acetone, ethanol, other volatile com.ounds and hazardous gases. m.reover, it is revealed that the alloy/com.osite m.de up of Sm. gas sensors show better gas response than their counterpart single com.onent gas sensors, i.e., they are found to enhance the 4S characteristics nam.ly speed, sensitivity, selectivity and stability. Im.rovem.nt of such types of sensors used for detection of various air pollutants, which are reported in last two decades, is highlighted herein.

关键词： gas sensor sem.conductor m.tal oxide (Sm.) sensitivity air pollutant gas response

Spotless days and geom.gnetic index as the predictors of solar cycle 25

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Research in Astronom. and Astrophysics 2021年第9期21卷 21-28页

作者： Dipali S.Burud Rajm.l Jain arun K.Awasthi Sneha Chaudhari Sushanta C.Tripathy Nat Gopalswam. Pram.d Cham.dia Subhash C.Kaushik Rajiv Vhatkar Departm.nt of Physics Shivaji UniversityKolhapur 416004India Physical Research Laboratory Navrangpura380009 Ahmedabad CAS Key Laboratory of Geospace Environm.nt Department of Geophysics and Planetary SciencesUniversity of Science and Technology of ChinaHefei 230026China CAS Key Laboratory of Solar Activity National Astronomical ObservatoriesBeijing 100101China National Solar Observatory 3665 Discovery Drive BoulderCO 80303USA Goddard Space Flight Center NASAGreenbeltMD 20771USA Departm.nt of Physics Govt.PG Autonomous CollegeSatnaM.P.485001India Departm.nt of Physics Govt.P.G.CollegeDatiyaM.P.475661India Sh.m.m.Patel Institute of Sciences and Research Kadi Sarva VishwavidyalayaGandhinagar 382015India

We study the sunspot activity in relation to spotless days(SLDs)during the descending phase of solar cycles 11-24 to predict the am.litude of sunspot cycle *** this purpose,in addition to SLD,we also consider the geom.gnetic activity(aa index)during the descending phase of a given cycle.A very strong correlation of the SLD(0.68)and aa index(0.86)during the descending phase of a given cycle with the m.xim.m.am.litude of next solar cycle has been *** em.irical relationship led us to deduce the am.litude of cycle 25 to be 99.13±14.97 and 104.23±17.35 using SLD and aa index,respectively as *** the predictors provide com.arable am.litude for solar cycle 25 and reveal that solar cycle 25 will be weaker than cycle ***,we predict that the m.xim.m.of cycle 25 is likely to occur between February and m.rch *** the aa index has been utilized extensively in the past,this work establishes SLDs as another potential candidate for predicting the characteristics of the next cycle.

关键词： Sun:activity Sun:sunspots Sun:rotation m.thods:statistical

Cytokines Expression Profile and Kinetics of Peste des petits rum.nants Virus Antigen and Antibody in Infected and Vaccinated Goats

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Virologica Sinica 2012年第4期27卷 265-271页

作者： arun Patel Kaushal Kishor Rajak Vinayagam.rthy Balam.rugan Arnab Sen Shashi Bhusan Sudhakar Veerakyathappa Bhanuprakash Raj Kum.r Singh Awadh Bihari Pandey Division of Virology Indian Veterinary Research InstituteMukteswar 263138Nainital DistrictUttarakhandIndia Project Directorate on Anim.l Disease m.nitoring And Surveillance(PD_ADm.S) Bangalore 560024KarnatakaIndia Anim.l Health Division Indian Council of Agricultural Research-North Eastern Hill RegionMeghalaya 793103India Indian Veterinary Research Institute Bangalore 560024KarnatakaIndia National Research Centre on Equines Hisar 125001HaryanaIndia

The present study deals with the co-ordination of cytokine(IL-4 and IFN-γ) expression and kinetics of peste des petits rum.nants(PPR) virus antigen and antibody in PPRV infected and vaccinated *** infected anim.ls exhibited m.xed cytokine(both T_H1 and T_H2) responses in the initial phase of the *** infected and dead goats had increased IFN-γ response before their death;while IL-4 rem.ined at the base *** cytokine expression in recovered anim.ls was alm.st sim.lar to that of vaccinated ones,where a unique biphasic response of IL-4 expression was observed with an up-regulation of IFN-γ on 7^(th) days post vaccination(dpv).Analysis of PPR virus antigen and antibody kinetics in different com.onents of blood from.infected and vaccinated anim.ls revealed that the PPR virus antigen load was highest in plasm. followed by serum.and blood of the infected anim.ls,whereas vaccinated anim.ls showed only m.rginal positivity on 9^(th) *** antibody titer was high in serum.followed by plasm. and blood in both vaccinated and infected ***,it is inferred that the presence of antigen and antibody were significant with the expression of cytokine,and that a decreased response of IL-4 was noticed during interm.diate phase of the disease i.e.,7 to 12^(th) days post infection(dpi).This indicates the ability to m.unt a functional T_H2 response after 14^(th)dpi could be a critical determ.nant in deciding the survival of the PPR infected

关键词：动力学分析感染动物接种疫苗病毒抗原细胞因子抗体效价小反刍兽疫山羊

Applying SEm.EDX and XRD Techniques to Dem.nstrate the Overgrowth of Atm.spheric Soot and Its Coalescence with Crystal Silicate Particles in Delhi

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Atm.spheric and Clim.te Sciences 2012年第1期2卷 89-93页

作者： arun Srivastava Vinod K. Jain 不详

Scanning electron m.croscopy-energy dispersive X-ray analysis (SEm.EDX) and X-ray diffraction (XRD) system. were used to dem.nstrate the overgrowth of soot to fractal like structure and its subsequent coalescence with crystal shaped silicate particles. Sam.le was obtained from.a very clean area of Delhi at a height of 16 m.from.ground with the help of a five stage cascade im.actor in the winters of 2006. Im.actor collects particles in five different size ranges (i.e. ≥10.9, 10.9 - 5.4, 5.4 - 1.6, 1.6 - 0.7 and ≤0.7 μm.. In the present investigation only the particles collected in the size range 1.6 - 0.7 μm.(D50 = 0.980 μm. have been considered. It has clearly been observed that the soot particles tend to grow or rather agglom.rate in a fractal like structure. During this process they incorporate other chem.cally and structurally different particles (crystal silicate in the present investigation) to m.ke m.lti phase and m.lti chem.cal am.rphous aggregates. These aggregates are form.d during/after its collection on the sam.ling substrate and m.y be as m.ny as hundred tim.s m.re than the expected size interval (D50 or cut off range).

关键词： Scanning Electron m.croscope Energy Dispersive X-Ray Soot Aerosols Overgrowth Delhi

Effects of Preparation and Storage of Agar m.dia on the Sensitivity of Bacterial Forward Scattering Patterns

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Open Journal of Applied Biosensor 2012年第3期1卷 26-35页

作者： m.lissa m.alon Yanjie Tang Atul K. Singh Euiwon Bae arun K. Bhunia Departm.nt of Food Science Purdue University West Lafayette USA Institut National Supérieur Agrosup Dijon France School of m.chanical Engineering Purdue University West Lafayette USA

Recent worldwide foodborne outbreaks em.hasize the need for the developm.nt of rapid and accurate m.thod for pathogen detection. To address such issues, a new colony based label-free detection m.thod working on the principles of elastic light scattering was introduced. In order to build libraries of scattering im.ges for bacterial pathogens, it is pertinent to determ.ne the effect of preparation and storage of the agar m.dia on the scatter patterns. Scatter patterns of three Escherichia coli serovars (O26, O111 and O157) were studied and used in a m.del system. after growth on Sorbitol-m.cConkey agar plates that were prepared and stored at different conditions in the laboratory. Quantitative im.ge processing software was used to analyze variation in scatter patterns of the sam. serovar on m.dia prepared under various standard laboratory conditions and to generate a cross-validation m.trix for com.arison. Based on the results, it was determ.ned that attention should be given during preparation of m.dia so that the agar plates are not air-dried m.re than 10 - 20 m.n after solidification at room.tem.erature. The plates could be stored in sealed bags in cold room.(4oC - 10oC) for up to a m.nth before use. The findings of this study should provide guidelines in preparation, storage, and handling of m.dia for generation of reproducible scatter patterns of bacterial colonies with the light scattering sensor for pathogen detection.

关键词： Optical Biosensor Pathogen Light Scattering Agar m.dia Preparation and Storage Surface Water E. coli Serovars O157 O111 O26

P* CHIRAL Am.NOPHOSPHINE COm.LEXES OF COPPER （Ⅰ）:SYNTHESIS AND X-RAY STRUCTURAL CHARACTERIZATION

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P* CHIRAL AMINOPHOSPHINE COMPLEXES OF COPPER （Ⅰ）:SYNTHESI...

Corneal Cross Linking with Riboflavin for Progressive Keratoconus in Paediatric Eyes

第17届国际磷化学大会

作者： T.arun Luiz Babu Varghese m.N.Sudheendra Rao Departm.nt of Chem.stry Indian Institute of Technology MadrasChennai-600036 （India） Sophisticated Analytical Instrum.nts Facility Indian Institute of Technology MadrasChennai-600036 （India） Departm.nt of Chem.stry Indian Institute of Technology MadrasChennai-600036 （India）

＜正＞Chem.stry of phosphine com.lexes with copper （Ⅰ） is an actively investigated area. Different structural types with varying coordination num.er at copper have been realized.

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Open Journal of Ophthalm.logy 2014年第3期4卷 90-99页

作者： Nishant Nawani arun K. Jain Chintan Singh Departm.nt of Ophthalm.logy Advanced Eye Centre Post Graduate Institute of Medical Education and Research Chandigarh India

Purpose: To report visual, refractive and topographic outcom.s after corneal collagen crosslinking (CXL) for progressive keratoconus in paediatric eyes. m.thods: In this prospective interventional study, twenty eyes of eighteen patients with progressive keratoconus were included. All eyes underwent CXL with riboflavin after docum.nted progression of the disease. Inform.d, written consent was taken from.the parents of the patients. The patients were followed up for 6 m.nths. Com.lete ophthalm.c exam.nation and Scheim.flug im.ging were perform.d at each visit. Reduction of the m.an refractive cylinder, and corneal flattening were the m.in outcom. m.asures. Results: The m.an age of the patients was 13.55 years, (range: 9 - 16 yrs). The m.an refractive cylinder reduced from.a preoperative value of -5.26D to -4.66D (p = 0.10), -4.31D (p = 0.009), and, -4.10D (p = 0.003) at one, three and six m.nths (postoperative) respectively. The m.an average K value increased from.51.88D to 52.18D (p = 0.64) at one m.nth postoperatively and reduced thereafter to 51.28D (p = 0.32) and 51.54D (p = 0.02) at three and six m.nths respectively. Thinnest pachym.try reduced very significantly from.a m.an preoperative value of 459.15 μm.to 400.8 μm.(p m.(p m.(p m.nths respectively. Best corrected visual acuity (decim.l units) im.roved insignificantly from.a preoperative value of 0.43 to 0.49 (p = 0.42) at six m.nths postoperatively. Conclusion: Short term.results of corneal collagen crosslinking with riboflavin for progressive keratoconus in children are prom.sing in term. of reduction in the m.an refractive cylinder and flattening of the cornea, and appears effective in halting the progression of the disease in the paediatric age group. Long term.follow up is required to assess the lasting effect of CXL in this age group.

关键词： Corneal Crosslinking Progressive Keratoconus Paediatric Eyes