检索结果-南通市图书馆

Journal of Materiomics 2022年第3期8卷 669-677页

作者： Rahul Singh Shiv Kumar a.jain Mahima Singh Labanya Ghosh A.Singh Soma Banik A.Lakhani S.Patil E.F.Schwier K.Shimada S.M.Yusuf Sandip Chatterjee Solid State Physics Division Bhabha Atomic Research CenterTrombayMumbai400085India Hiroshima Synchrotron Radiation Center HiroshimaJapan Homi Bhabha National Institute AnushaktinagarMumbai400094India Department of Physics Indian Institute of Technology(BHU)Varanasi221005India Synchrotrons Utilization Section Raja Ramanna Centre for Advanced TechnologyIndore452013India UGC-DAE Consortium for Scientific Research IndoreMadhya Pradesh452017India Department of CMP&MS Tata Institute of Fundamental ResearchMumbai400005India

The topological insulators Bi_(2-x)Fe_(x)Se_(3-x)S_(x) have been investigated by the dc-magnetization,magnetotransport and angle resolved photoemission spectroscopy(ARPES)*** doping of Fe and S,a negative giant magneto-resistance(MR)is observed for parallel electric and magnetic fields(H||E).The MR behavior at lower magnetic field can be explained with the semi-classical theory whereas the MR behavior at higher field has been attributed to the axial ***,the system reached to the quantum limit at low magnetic field(~4.5T).The magnetic ordering can be explained with the presence of both the RKKY(surface)and van-Vleck(bulk)*** ARPES study reveals that a surface gap is suppressed when the magnetic ordering changes from ferromagnetic to anti-ferromagnetic *** ARPES study and the appearance of quantum oscillations(SdH)in the resistivity pattern reveal that the topological surface property is preserved with the co-doping of Fe and S.

关键词： Spintronics Magnetoresistance Magnetism Topological insulators RKKY interaction ARPES study

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

吡嗪酰胺对结核病人利福平动力学的影响

国际结核病与肺部疾病杂志 1996年第3期 111-114页

作者： a.jain V.L.Mehta S.Kulshrestha 张崇贤 Department of Pharmacology Maulana Azad Medical CollegeNew DelhiINDIA

利福平和吡嗪酰胺,与INH、链霉素或乙胺丁醇一道,构成了对结核病治疗中所提倡的药物方案中的一个重要部分。国际防痨和肺病联合会业已建议采用这两个药物作为结核病短程化学治疗的一部分。因此,本研究承担起评价两药同时给予时,吡嗪酰... 详细信息

利福平和吡嗪酰胺,与INH、链霉素或乙胺丁醇一道,构成了对结核病治疗中所提倡的药物方案中的一个重要部分。国际防痨和肺病联合会业已建议采用这两个药物作为结核病短程化学治疗的一部分。因此,本研究承担起评价两药同时给予时,吡嗪酰胺对利福平动力学的影响。在一项随机化的、交迭法的、单一剂量的研究中,未经治疗的16名肺结核病人,经过过夜的禁食后,给予利福平450mg+INH 300mg(研究A组)或利福平450mg+INH300mg+吡嗪酰胺1500mg(研究B组)。为检测血清中利福平于0.5、2、4、6、和8小时进行血样采集。各种药物动力学的参数(利福平的Cmax、Tmax、t1/2、Kel、血浆浓度-时间曲线下的面积(AUC)、Vd和Cpl)均予以计算。已经观察到,研究A组利福平的浓度于6小时(P<0.01)、8小时(P<0.05),与研究B组相反,明显地较高,而于0.5、2和4小时的血清中利福平浓度没有显著差异。AUC和Cpl也有显著差异。与研究B组相比,研究A组的AUC较高(P<0.05),而Cpl较低(P<0.02)。从以上数据可见,在用利福平治疗的病人中合并给予吡嗪酰胺,利福平的AUC减少,而它的廓清率增加。

关键词：利福平药物动力学结核病人廓清率平均值 B组化学治疗生物可利用性吡嗪酰胺

肝移植术后免疫抑制治疗方案中激素的撤离——匹兹堡中心长期随访经验

在线全文

学校读者我要写书评

暂无评论

中华肝胆外科杂志 2004年第12期10卷 799-801页

作者：江春平朱岳丁义涛 a.jain J.J.Fung 南京大学医学院附属鼓楼医院普外科南京市210008 美国匹兹堡大学Thomas E.Starzl器官移植研究所 15213

肾上腺糖皮质激素类药物是临床上最常用的免疫抑制剂.长期应用免疫抑制剂包括激素的毒副作用一直是进一步提高肝移植术后长期存活率不可忽视的障碍.因此有关肝移植术后激素撤离的研究已引起诸多移植中心的重视,但迄今尚无成熟统一的方案.

关键词：肝移植术术后长期随访肾上腺糖皮质激素撤离免疫抑制治疗免疫抑制剂成熟

Image smog restoration using oblique gradient profile prior and energy minimization

在线全文

学校读者我要写书评

暂无评论

Frontiers of Computer Science 2021年第6期15卷 147-153页

作者： Ashok KUMAR Arpit jain College of Computing Science and Information Technogy TeerthankerMahaveer UniversityMoradabad 244001India

Removing the smog from digital images is a challenging pre-processing tool in various imaging ***,many smog removal(i.e.,desmogging)models are proposed so far to remove the effect of smog from *** desmogging models are based upon a physical model,it means it requires efficient estimation of transmission map and atmospheric veil from a single smoggy ***,many prior based restoration models are proposed in the literature to estimate the transmission map and an atmospheric ***,these models utilized computationally extensive minimization of an energy ***,the existing restoration models suffer from various issues such as distortion of texture,edges,and ***,in this paper,a convolutional neural network(CNN)is used to estimate the physical attributes of smoggy *** gradient channel prior(OGCP)is utilized to restore the smoggy ***,a dataset of smoggy and sunny images are ***,we have trained CNN to estimate the smog gradient from smoggy ***,based upon the computed smog gradient,OGCP is utilized to restore the still smoggy *** analyses reveal that the proposed CNN-OGCP based desmogging model outperforms the existing desmogging models in terms of various performance metrics.

关键词： convolutional neural networks desmogging smog oblique gradient channel prior

＂NEW＂ resource recovery from wastewater using bioelectrochemical systems： Moving forward with functions

在线全文

学校读者我要写书评

暂无评论

Frontiers of Environmental Science & Engineering 2018年第4期12卷 3-15页

作者： Akshay jain Zhen He Department of Civil and Environmental Engineering Virginia Polytechnic Institute and State University Blacksburg VA 24061 USA

Bioelectrochemical systems （BES） have been extensively studied ｜br resource recovery from wastewater. By taking advantage of interactions between microorganisms and electrodes, BES can accomplish wastewater treatment while simultaneously recovering various resources including nutrients, energy and water （＂NEW＂）. Despite much progress in laboratory sit, dies, BES have not been advanced to practical applications. This paper aims to provide some subjective opinions and a concise discussion of several key challenges in BES-based resource recovery and help identil- the potential application niches that may guide further technological development. In addition to further increasing recovery efficiency, it is also important to have more lbcus on the applications of the recovered resources such as how to use the harvested electricity and gaseous energy and how to separate the recovered nutrients in an energy-efficient way. A changc in mindset fur energy performance of BES is necessary to understand overall energy production and consumption. Scaling up BES can go through laboratory scale, transitional scale, and then pilot scale. Using functions as driving forces lbr BES research and development will better guide the investment of efforts.

关键词： Bioelectrochemical systemsResource recoveryWastewater treatmentEnergy Nutrients

Real-Time Analysis of COVID-19 Pandemic on Most Populated Countries Worldwide

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computer Modeling in Engineering & Sciences 2020年第12期125卷 943-965页

作者： Meenu Gupta Rachna.jain Akash Gupta Kunal jain Department of Computer Science and Engineering Chandigarh UniversityPunjab140301India Department of Computer Science and Engineering Bharati Vidyapeeth’s College of EngineeringNew Delhi110063India

The spread of the Severe Acute Respiratory Syndrome Coronavirus 2(SARS-CoV-2)has already taken on pandemic extents,influencing even more than 200 nations in a couple of ***,regulation measures in China have decreased new cases by over 98%,this decrease is not the situation everywhere,and most of the countries still have been affected by *** objective of this research work is to make a comparative analysis of the top 5 most populated countries namely United States,India,China,Pakistan and Indonesia,from 1st January 2020 to 31st July *** research work also targets to predict an increase in the number of deaths and total infected cases in these five *** our research,the performance of the proposed framework is determined by using three Machine Learning(ML)regression algorithms namely Linear Regression(LR),Support Vector Regression(SVR),andRandom Forest(RF)*** proposed model is also validated upon the infected and death cases of further *** performance of these three algorithms is compared using the RootMean Square Error(RMSE)*** Forest algorithm shows best performance as compared to other proposed algorithms,with the lowest RMSE value in the prediction of total infected and total deaths cases for all the top five most populated countries.

关键词： COVID-19 SARS COV-2 country-wise analysis most populated countries pandemic mortality rate

Tracking Control of Uncertain Nonlinear Systems With Unknown Constant Input Delay

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

IEEE/CAA Journal of Automatica Sinica 2020年第2期7卷 420-425页

作者： Ashish Kumar jain Shubhendu Bhasin Department of Electrical Engineering Indian Institute of Technology DelhiNew Delhi-110016India

A robust delay compensator has been developed for a class of uncertain nonlinear systems with an unknown constant input *** control law consists of feedback terms based on the integral of past control values and a novel filtered tracking error,capable of compensating for input *** Lyapunov-Krasovskii functionals are used to prove global uniformly ultimately bounded(GUUB)tracking,provided certain sufficient gain conditions,dependent on the bound of the delay,are *** results illustrate the performance and robustness of the controller for different values of input delay.

关键词： Global uniformly ultimately bounded stability Lyapunov-Krasovskii functionals nonlinear systems tracking control unknown input delay

Performance evaluation of deep neural networks for forecasting time-series with multiple structural breaks and high volatility

在线全文

学校读者我要写书评

暂无评论

CAAI Transactions on Intelligence Technology 2021年第3期6卷 265-280页

作者： Rohit Kaushik Shikhar jain Siddhant jain Tirtharaj Dash Department of Computer Science and Information Systems Birla Institute of Technology and Science PilaniK.K.Birla Goa CampusZuarinagarGoaIndia

The problem of automatic and accurate forecasting of time-series data has always been an interesting challenge for the machine learning and forecasting community.A majority of the real-world time-series problems have non-stationary characteristics that make the understanding of trend and seasonality *** applicability of the popular deep neural networks(DNNs)as function approximators for non-stationary TSF is *** following DNN models are evaluated:Multi-layer Perceptron(MLP),Convolutional Neural Network(CNN),and RNN with Long Short-Term Memory(LSTM-RNN)and RNN with Gated-Recurrent Unit(GRU-RNN).These DNN methods have been evaluated over 10 popular Indian financial stocks ***,the performance evaluation of these DNNs has been carried out in multiple independent runs for two settings of forecasting:(1)single-step forecasting,and(2)multi-step *** DNN methods show convincing performance for single-step forecasting(one-day ahead forecast).For the multi-step forecasting(multiple days ahead forecast),the methods for different forecast periods are *** performance of these methods demonstrates that long forecast periods have an adverse effect on performance.

关键词： networks neural forecasting

Revisiting the Epoch of Cosmic Acceleration

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Research in Astronomy and Astrophysics 2023年第9期23卷 1-11页

作者： David Dahiya Deepak jain Technische Universität Dresden D-01069 DresdenGermany Deen Dayal Upadhyaya College University of DelhiDwarkaNew DelhiIndia

We revisit the epoch of cosmic speed-up characterized by the redshift of transition from a decelerated to an accelerated *** redshift is termed the transition redshift(z_(t)).We use the spatially flat and non-flat variants of the most commonΛCDM and XCDM models to put constraints on the transition redshift along with the other model *** data for this analysis come from the recent and updated Pantheon+supernova(SN)data set and the Hubble parameter measurements obtained from Cosmic *** consider both data sets with their respective covariance matrices incorporating all statistical and systematic *** observe that using the combined data sets of H(z)and SNe,the best fit value of transition redshift lies in the range 0.61

关键词： (cosmology )dark energy-(cosmology )cosmological parameters-cosmology observations

Effect of Buchanania lanzan *** extract on cyclophosphamide induced genotoxicity and oxidative stress in mice

在线全文

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Medicine 2012年第3期5卷 187-191页

作者： Ritesh jain Sanmati Kumar jain SLT Institute of Pharmceutical Sciences Guru Ghasidas Vishwavidyalaya(Central University) Bilaspur495009ChhattisgarhIndia

Objective:To elucidate the effect of ethanolic extract of Buchanania lanzan Spreng.(***) bark against cyclophosphamide induced genotoxicity and oxidative stress in ***: The prevalence of micronuclei in bone marrow,the extent of lipid peroxidation,reduced glutathione and the status of the antioxidant enzymes,superoxide dismutase and catalase in liver of mice were used as intermediate biomarkers for *** peroxidation and associated compromised antioxidant defenses in cyclophosphamide treated mice were observed in the ***:Pre-treatment with *** 250,500 and 1 000 mg/ kg,p.o.,daily for 7 days significantly reduced the chromosomal damage and lipid peroxidation with concomitant changes in antioxidants and detoxification ***:These results point out the presence of chemopreventive phytoconstituents in the crude extract offering protection against cyclophosphamide induced genotoxicity and oxidative stress in mice.

关键词： Genotoxicity Antioxidant Antimutagenic Anticancer Buchanania lanzan