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Perspectives on Higgs boson and su.ersymmetry

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Frontiers of physics 2013年第3期8卷 294-301页

作者： Pran nath Department of Physics Northeastern University Boston MA 02115-5005 USA

We review the recent discovery of the Higgs like particle at - 125 GeV and its implications for par- ticle physics models. Specifically the implications of the relatively high Higgs mass for the discovery of su.ersymmetry are discu.sed. Several related topics su.h as natu.alness and su.ersymmetry, dark matter and u.ification are also discu.sed.

关键词： 125 GeV Higgs su.ersymmetry (Su.Y) dark matter u.ification

Stru.tu.al reliability analysis u.ing a hybrid HDMR-ANN method

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Jou.nal of Central Sou.h u.iversity 2017年第11期24卷 2532-2541页

作者： Bhaw nath Jha LI Hong-shu.ng Key Laboratory of Fu.damental Science for National Defense-Advanced Design Technology of Flight Vehicles Nanjing University of Aeronautics and AstronauticsNanjing 210016China

A new hybrid method is proposed to estimate the failu.e probability of a stru.tu.e su.ject to random parameters. The high dimensional model representation(HDMR) combined with artificial neu.al network(ANN) is u.ed to approximate implicit limit state fu.ctions in stru.tu.al reliability analysis. HDMR facilitates the lower dimensional approximation of the original limit states fu.ction. For evalu.ting the failu.e probability, a first-order HDMR approximation is constru.ted by deploying sampling points along each random variable axis and hence obtaining the stru.tu.al responses. To redu.e the compu.ational effort of the evalu.tion of limit state fu.ction, an ANN su.rogate is trained based on the sampling points from HDMR. The component of the approximated fu.ction in HDMR can be regarded as the inpu. of the ANN and the response of limit state fu.ction can be regarded as the target for training an ANN su.rogate. This trained ANN su.rogate is u.ed to obtain stru.tu.al ou.pu.s instead of directly calling the nu.erical model of a stru.tu.e. After generating the ANN su.rogate, Monte Carlo simu.ation(MCS) is performed to obtain the failu.e probability, based on the trained ANN su.rogate. Three nu.erical examples are u.ed to illu.trate the accu.acy and efficiency of the proposed method.

关键词： high dimensional model representation stru.tu.al reliability artificial neu.al network failu.e probability

Post-bu.king of angle-ply laminated plates u.der thermal loading

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Commu.ications in Nonlinear Science and Nu.erical Simu.ation 2001年第1期6卷 1-16页

作者： Y.nath and K. K. SHu.LA (Department of Applied Mechanics, Indian Institu.e of Technology, Delhi, New Delhi 110016, India Department of Applied Mechanics, Motilal Nehru.Regional Engineering College, Allahabad 211004 (u. P.), India) Department of Applied Mechanics Indian Inst. of Technology Delhi New Delhi 110016 India Department of Applied Mechanics Motilal Nehru Reg. Eng. College Allahabad 211004 (U. P.) India

The present investigation deals with the post bu.kling analysis of the moderately thick angle-ply laminated composite rectangu.ar plates u.der in-plane u.iform temperatu.e indu.ed loading. von Karman type geometrical nonlinearity and first order shear deformation theory are employed in the formu.ation of the problem. Nonlinear governing differential equ.- tions of equ.libriu. are linearized by qu.dratic extrapolation techniqu. and resu.ting linear differential equ.tions are solved iteratively, u.ing Chebyshev polynomials. The bou.dary con- ditions consisting of clamped. simply su.ported and their combinations are considered. An incremental iterative approach is employed to estimate the critical/bu.kling temperatu.es. The effects of b/a, a/h, bou.dary conditions, Iamination scheme, You.g's modu.i ratio and ratio of coefficients of thermal expansion on post bu.kling behaviou. are investigated.

关键词： composite plates thermal bu.kling shear deformation Chebyshev series

A new approach to the design of su.face su.systems of polymeric insu.ators for HV and MV apparatu. u.der AC voltage

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High Voltage 2023年第4期8卷 651-658页

作者： Gian Carlo Montanari Debasish nath Pasqu.le Cambareri Center for Advanced Power Systems Florida State UniversityTallahasseeFloridaUSA Dipartimento di Elettronica Informazione e BioingegneriaPolitecnico di MilanoMilanoItaly

The design of high voltage and mediu. voltage AC and DC standoff insu.ators,and,in general,of insu.ation systems where su.face and interface properties are predominant factors,is based on specifications and standards that rely u.on long-term experiences and lab *** insu.ating properties depend on electrical and thermal stresses,besides environmental factors,and the inception of extrinsic ageing phenomena,su.h as partial discharges,can be already a cau.e of redu.ed reliability and prematu.e failu.e(for organic insu.ating materials).An innovative approach,based on field simu.ation,discharge modelling,and partial discharge inception measu.ements is presented by the au.hors,which can establish a solid basis to optimise insu.ation design for any type of su.ply voltage *** method,the three-leg approach,is applied here to a cable system u.der AC sinu.oidal voltage,bu. it can work for any type of insu.ation system,su.h as bu.hings,switch gears,transformers,rotating machines,and power electronics boards.

关键词： insu.ation approach insu.ator

Exploring the merits of geographical diversification of solar PV power plants for a resilient PV-dominated electricity grid in India

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Clean Energy 2023年第4期7卷 885-910页

作者： Saikat Ghosh Jatindra nath Roy Chandan Chakraborty Advanced Technology Development Centre Indian Institute of Technology Kharagpur721302India Department of Electrical Engineering Indian Institute of Technology Kharagpur721302India

India is highly dependent on solar photovoltaics(PV)to harness its vast solar resou.ce potential and combat climate ***,∼90%of the installed PV capacity in India is concentrated in the top nine states,with the remaining states lagging *** research reveals that du.ing monsoons,heavy clou. cover and rain lead to high solar resou.ce variability,intermittency and the risk of very low PV generation,which can resu.t in reliability issu.s in fu.u.e PV-dominated electricity *** energy storage can help in overcoming high intermittency,there are mu.tiple challenges associated with *** novelty of this stu.y lies in demonstrating the benefits of combining mu.tiple PV sites in variou. regions to mitigate the risks of low PV generation and high *** variability of individu.l sites was fou.d to be u. to∼3.5 times higher than the variability of combined *** noon,prominent solar park sites like Bhadla and NP Ku.ta experience a decrease in power generation to valu.s as low as∼10%of the rated PV ***,the minimu. generation of the large-scale dispersed PV generation is>30%.Fu.thermore,the research identifies other benefits of dispersing PV generation across the cou.try,viz.,redu.tion of seasonal variability by adding PV capacity in the sou.hern region,widening of the PV generation span,more room for PV capacity addition,redu.tion in storage and ramping needs,u.ilization of hydroelectric potential of the north-east and PV potential of Ladakh,and creating opportu.ities for su.tainable development in ru.al agrarian regions throu.h agrivoltaics.

关键词： decarbonization PV-based resilient grid PV variability and intermittency solar PV power plants

On Generalized Non-commu.ing Graph of a Finite Ring

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Algebra Colloqu.u. 2018年第1期25卷 149-160页

作者： Ju.irekha Du.ta Dhiren K. Basnet Rajat K. nath Department of Mathematical Sciences Tezpur University Napaam-784028 Sonitpur Assam India

Let S and K be two su.rings of a finite ring R. Then the generalized non- commu.ing graph of su.rings S, K of R, denoted by [＇S,K, is a simple graph whose vertex set is （S u.K）／（CK（S） u.Cs（K））, and where two distinct vertices a, b are adjacent if and only if a E S or b E S and ab ≠ ba. We determine the diameter, girth and some dominating sets for FS, K. Some connections between Fs,K and Pr（S, K） are also obtained. Fu.ther, Z-isoclinism between two pairs of finite rings is defined, and we show that the generalized non-commu.ing graphs of two Y_~isoclinic pairs are isomorphic u.der some conditions.

关键词： non-commu.ing graph commu.ing probability Z-isoclinism

Evalu.tion of au.itory working memory in Bharatanatyam dancers

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Jou.nal of Otology 2022年第2期17卷 95-100页

作者： Praveen Prakash Anjana M.nath Mereena Joy Prashanth Prabhu Department of Au.iology All India Institute of Speech and HearingManasagangothriMysuru570006India Department of Speech Pathology and Au.iology Amrita Institute of Medical SciencesKochi682041India

Backgrou.d:Neu.oplasticity is a phenomenon exhibited by ou. nervou. system as an indicator of overall development and in response to training,inju.y/loss of particu.ar fu.ction,treatment/dru.s and as a resu.t of stimu.ation from the su.rou.ding ***:The aim of the cu.rent stu.y was to assess the au.itory working memory capacities in Bharatanatyam ***:The participants comprised fifty-fou. females with normal hearing sensitivity who belonged to two ***-I consisted of 27 individu.ls who u.derwent formal training in Bharatanatyam for a minimu. period of three ***-II consisted of the age-matched control grou.,consisting of 27individu.ls who were *** au.itory working memory tasks inclu.ed arranging the English digits presented binau.ally in forward,backward,ascending,and descending *** maximu. valu.s(for the length of sequ.nce arranged),midpoint valu.s(average score),and response time for each task were noted down and compared among ***:The scores were compared u.ing the Mann-Whitney u.test,which revealed enhanced working memory exhibited by dancers for maximu. valu.s and midpoint scores for all three tasks except ascending *** was also noted that the dancers exhibited a shorter response time compared to nondancers for all the tasks except ascending ***:The cu.rent stu.y highlights an enhanced au.itory working memory capacity in Bharatanatyam dancers,which cou.d be perceived as evidence of neu.oplastic changes indu.ed in the au.itory and motor cortex as a consequ.nce of extensive stimu.ation for au.itory processing abilities and motor planning resu.ting from long-term dance training and regu.ar practice.

关键词： Neu.oplasticity Bharatanatyam dance Dance training Au.itory processing abilities

Diagnosis of Helicobacter pylori : What shou.d be the gold standard?

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World Jou.nal of Gastroenterology 2014年第36期20卷 12847-12859页

作者： Sau.abh Ku.ar Patel Chandra Bhan Pratap Ashok Ku.ar Jain Anil Ku.ar Gu.ati Gopal nath Department of Microbiology Institut of Medical Sciences Banaras Hindu University Varanasi U221005 India Department of Gastroenterology Institute of Medical Sciences Banaras Hindu University Varanasi UP221005 India Department of Microbiology Institutof Medical Sciences Banaras Hindu University Varanasi U221005 India

Since the discovery of Helicobacter pylori (H. pylori) in 1983, nu.erou. detection methods for the presence of the bacteriu. have been developed. Each one of them has been associated with advantages and disadvantages. Noninvasive tests su.h as serology, u.>13u.>C u.ea breath test (u.T) and stool antigen tests are u.u.lly preferred by the clinicians. Serology has its own limitation especially in endemic areas while u.>13u.>C u.T is technically very demanding. The stool antigen detection method, althou.h specific, is u.u.lly associated with poor sensitivity. The u.>13u.>C u.T is believed to be specific, bu. with present revelation of the fact that stomach is colonized by many other u.ease produ.ing bacteria makes it qu.stionable. Histology, cu.tu.e, rapid u.ease test and polymerase chain reaction (PCR) are the tests which are carried ou. on antral biopsies collected by invasive means. Histology has been proposed to be very sensitive and specific bu. the qu.stion is how by simply looking the morphology of the bacteria in the microscope, one can claim that the cu.ved bacteriu. is exclu.ively H. pylori. Rapid u.ease test (Ru.), the doctor’s test, is also challenged becau.e the presence of other u.ease produ.ing bacteria in the stomach cannot be denied. Moreover, Ru. has been reported with poor sensitivity specially, when density of the bacteriu. is low. Isolation of H. pylori is essential to investigate its growth requ.rements, antibiotic su.ceptibility testing, stu.ying viru.ence factor to develop vaccine and many more explorations. It has also got several disadvantages i.e., special condition for transporting, media, incu.ation and few days waiting for the colonies to appear, apart from the speed essentially needed to process the specimens. Till date, majority of the microbiological laboratories in the world are not equ.pped and trained to isolate su.h fastidiou. bacteriu.. The option left is PCR methods to detect H. pylori’s DNA in gastr

关键词： Helicobacter pylori review Invasive tests Non-invasive tests Gold standard Polymerase chain reaction detection Nested polymerase chain reaction

Silica Indu.ed Early Fibrogenic Reaction in Lu.g of Mice Ameliorated by Nyctanthes arbortristis Extract

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Biomedical and Environmental Sciences 2002年第3期15卷 215-222页

作者： BHOLA nath PAu. ANAND PRAKASH SIRISH Ku.AR AJAY KYADAV u.ANI ASHOK KSAXENA ANAND PRAKASH SAHu.KEWAL LAL KALYAN KDu.TA Immu.obiology Laboratory Industrial Toxicology Research CentreM.G.MargLucknow 226001U.P.India Inhalation Toxicology Laboratory Industrial Toxicology Research CentreM.G.MargLucknow 226001U.P.India Preventive Toxicology Laboratory Industrial Toxicology Research CentreM.G.MargLucknow 226001U.P.India

Objective To investigate the pharmacological effect of Nyctanthes arbortristis (NAT) leaf extract in the prevention of lu.g inju.y indu.ed by silica particles. Method Lu.g inju.y was indu.ed in Swiss mice throu.h inhalation exposu.e to silica particles (u.ing a Flow Past Nose Only Inhalation Chamber at the rate of -10 mg/m3 respirable mass for 5 h. Lu.g bronchoalveolar lavage (BAL) flu.d collected between 48 and 72 h was su.jected to protein profiling by electrophoresis and cytokine evalu.tion by solid phase sandwich ELISA. Lu.g histopathology was performed to evalu.te lu.g inju.y. Resu.ts Inhalation of silica increased the level of tu.or necrosis factor-a (TNF-a), and of the 66 and 63 kDa peptides in the BAL flu.d in comparison to sham-treated control. Pre-treatment of silica exposed mice with NAT leaf extract significantly prevented the accu.u.ation of TNF-a in the BAL flu.d, bu. the 66 and 63 kDa peptides remained u.changed. The extract was also effective in the prevention of silica-indu.ed early fibrogenic reactions like congestion, edema and infiltration of nu.leated cells in the interstitial alveolar spaces, and thickening of alveolar septa in mou.e lu.g. Conclu.ion NAT leaf extract helps in bypassing silica indu.ed initial lu.g inju.y in mice.

关键词： Nyctanthes arbortristis Lu.g-inju.y Silica Mice prevention