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Nonequilibrium Phase Transition in spin-s Ising Ferromagnet Driven by Propagating and standing Magnetic Field Wave

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Communications in Theoretical Physics 2017年第11期67卷 600-610页

作者： Ajay halder Muktish Acharyya Department of Physics Presidency University

The dynamical response of spin-s(s=1, 3/2, 2, 3) Ising ferromagnet to the plane propagating wave, standing magnetic field wave and uniformly oscillating field with constant frequency are studied separately in two dimensions by extensive Monte Carlo simulation. Depending upon the strength of the magnetic field and the value of the spin state of the Ising spin lattice two different dynamical phases are observed. For a fixed value of s and the amplitude of the propagating magnetic field wave the system undergoes a dynamical phase transition from propagating phase to pinned phase as the temperature of the system is cooled down. similarly in case with standing magnetic wave the system undergoes dynamical phase transition from high temperature phase where spins oscillate coherently in alternate bands of half wavelength of the standing magnetic wave to the low temperature pinned or spin frozen phase. For a fixed value of the amplitude of magnetic field oscillation the transition temperature is observed to decrease to a limiting value as the value of spin s is increased. The time averaged magnetisation over a full cycle of the magnetic field oscillation plays the role of the dynamic order parameter. A comprehensive phase boundary is drawn in the plane of magnetic field amplitude and dynamic transition temperature. It is found that the phase boundary shrinks inwards for high value of spin state *** in the low temperature(and high field) region the phase boundaries are closely spaced.

关键词： Ising model dynamic phase transition Monte-Carlo algorithm propagating wave standing wave

Robust Nonlinear Analytic Redundancy for Fault Detection and Isolation in Mobile Robot

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International Journal of Automation and computing 2007年第2期4卷 177-182页

作者： Bibhrajit halder Nilanjan sarkar Department of Mechanical Engineering Vanderbilt UniversityNashvilleTN-37212USA

A robust nonlinear analytical redundancy （RNLAR） technique is presented to detect and isolate actuator and sensor faults in a mobile robot. Both model-plant-mismatch （MPM） and process disturbance are considered during fault detection. The RNLAR is used to design primary residual vectors （PRV）, which are highly sensitive to the faults and less sensitive to MPM and process disturbance, for sensor and actuator fault detection. The PRVs are then transformed into a set of structured residual vectors （sRV） for fault isolation. Experimental results on a Pioneer 3-DX mobile robot are presented to justify the effectiveness of the RNLAR scheme.

关键词： Fault detection fault isolation nonlinear systems robustness uncertainty.

Rhyolites in continental mafic Large Igneous Provinces: Petrology,geochemistry and petrogenesis

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Geoscience Frontiers 2021年第1期12卷 53-80页

作者： Mahesh halder Debajyoti Paul sarajit sensarma Department of Earth sciences Indian Institute of Technology KanpurKanpur 208016India Centre of Advanced study in Geology University of LucknowLucknow 226007India

We present a detailed review of the petrological and geochemical aspects of rhyolite and associated silicic volcanic rocks(up to 20 vol%of all rocks)reported to date from twelve well known Phanerozoic continental mafic Large Igneous Provinces(LIPs).These typically spread oversesive silicic rocks,erupted either during or after the main basaltic eruption withinsome eruption(s)continuing for≤30 *** rhyolites and associated silicic volcanic rocks(60-81 wt.%of siO2)are mostly metaluminous to peraluminous and are formed via(ⅰ)fractional crystallization of parental mafic magma with negligible crustal contamination,and(ⅱ)melting of continental crust or assimilation and fractional crystallization(AFC)of mafic magma with significant crustal *** formed by extensive fractional crystallization are characterized by the presence of clinopyroxene phenocrysts,exhibit steep negative slopes in bivariate major oxides plots and weak to no Nb-Ta anomaly;these typically have temperature>900℃.Rhyolites formed by significant crustal contribution are characterized by strong negative Nb-Ta anomalies,absence of clinopyroxene phenocrysts,and are likely to have a magma temperaturesignatures suggest rhyolite melt generation in the plagioclase stability field with a minor fraction originating from lower crustal depths.A large part of the compositional variability in rhyolites,particularly the srNd-Pb-O isotope ratios,suggests a significant role of continental crust(upper crustal melting or AFC)in the evolution of these silicic rocks in the continental mafic LIPs.

关键词： Large Igneous Province silicic rock Rhyolite Geochemistry Petrogenesis AFC

strategies for translating proteomics discoveries into drug discovery for dementia

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Neural Regeneration Research 2024年第1期19卷 132-139页

作者： Aditi halder Eleanor Drummond school of Medical sciences and Brain&Mind Center University of SydneyNSWSydneyAustralia Department of Aged Care Prince of Wales HospitalSydneyNSWAustralia

Tauopathies,diseases characterized by neuropathological aggregates of tau including Alzheimer's disease and subtypes of fro ntotemporal dementia,make up the vast majority of dementia *** there have been recent developments in tauopathy biomarkers and disease-modifying treatments,ongoing progress is required to ensure these are effective,economical,and accessible for the globally ageing *** such,continued identification of new potential drug targets and biomarkers is critical."Big data"studies,such as proteomics,can generate information on thousands of possible new targets for dementia diagnostics and therapeutics,but currently remain underutilized due to the lack of a clear process by which targets are selected for future drug *** this review,we discuss current tauopathy biomarkers and therapeutics,and highlight areas in need of improvement,particularly when addressing the needs of frail,comorbid and cognitively impaired *** highlight biomarkers which have been developed from proteomic data,and outline possible future directions in this *** propose new criteria by which potential targets in proteomics studies can be objectively ranked as favorable for drug development,and demonstrate its application to our group's recent tau interactome dataset as an example.

关键词： Alzheimer's disease biomarkers drug development drug discovery druggability frontotemporal dementia interactome proteomics tau tauopathies therapeutics

Measurement of the integrated luminosity of the Phase 2 data of the Belle Ⅱ experiment

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Chinese Physics C 2020年第2期44卷 1-12页

作者： F.Abudinén I.Adachi P.Ahlburg H.Aihara N.Akopov A.Aloisio F.Ameli L.Andricek N.Anh Ky D.M.Asner H.Atmacan T.Aushev V.Aushev T.Aziz K.Azmi V.Babu s.Baehr s.Bahinipati A.M.Bakich P.Bambade sw.Banerjee s.Bansal V.Bansal M.Barrett J.Baudot A.Beaulieu J.Becker P.K.Behera J.V.Bennett E.Bernieri F.U.Bernlochner M.Bertemes M.Bessner s.Bettarini V.Bhardwaj F.Bianchi T.Bilka s.Bilokin D.Biswas G.Bonvicini A.Bozek M.Bračko P.Branchini N.Braun T.E.Browder A.Budano s.Bussino M.Campajola L.Cao G.Casarosa C.Cecchi D.Červenkov M.-C.Chang P.Chang R.Cheaib V.Chekelian Y.Q.Chen Y.-T.Chen B.G.Cheon K.Chilikin H.-E.Cho K.Cho s.Cho s.-K.Choi s.Choudhury D.Cinabro L.Corona L.M.Cremaldi s.Cunliffe T.Czank F.Dattola E.De La Cruz-Burelo G.De Nardo M.De Nuccio G.De Pietro R.de sangro M.Destefanis s.Dey A.De Yta-Hernandez F.Di Capua s.Di Carlo J.Dingfelder Z.Doležal I.Domínguez Jiménez T.V.Dong K.Dort s.Dubey s.Duell s.Eidelman M.Eliachevitch T.Ferber D.Ferlewicz G.Finocchiaro s.Fiore A.Fodor F.Forti A.Frey B.G.Fulsom M.Gabriel E.Ganiev M.Garcia-Hernandez R.Garg A.Garmash V.Gaur A.Gaz U.Gebauer A.Gellrich J.Gemmler T.Geßler R.Giordano A.Giri B.Gobbo R.Godang P.Goldenzweig B.Golob P.Gomis P.Grace W.Gradl E.Graziani D.Greenwald C.Hadjivasiliou s.halder K.Hara T.Hara O.Hartbrich K.Hayasaka H.Hayashii C.Hearty M.T.Hedges I.Heredia de la Cruz M.Hernández Villanueva A.Hershenhorn T.Higuchi E.C.Hill H.Hirata M.Hoek s.Hollitt T.Hotta C.-L.Hsu Y.Hu K.Huang T.Iijima K.Inami G.Inguglia J.Irakkathil Jabbar A.Ishikawa R.Itoh M.Iwasaki Y.Iwasaki s.Iwata P.Jackson W.W.Jacobs D.E.Jaffe E.-J.Jang H.B.Jeon s.Jia Y.Jin C.Joo J.Kahn H.Kakuno A.B.Kaliyar G.Karyan Y.Kato T.Kawasaki H.Kichimi C.Kiesling B.H.Kim C.-H.Kim D.Y.Kim s.-H.Kim Y.K.Kim Y.Kim T.D.Kimmel K.Kinoshita C.Kleinwort B.Knysh P.Kodyš T.Koga I.Komarov T.Konno s.Korpar D.Kotchetkov N.Kovalchuk T.M.G.Kraetzschmar P.Križan R.Kroeger J.F.Krohn P.Krokovny W.Kuehn T.Kuhr M.Kumar R.Kumar K.Kumara s.Kurz A.Kuzmin Y.-J.Kwon s.Lacaprara Y.-T.Lai C.La Licata K.Lalwani L.Lanceri J.s.Lange K.Lautenbach I.-s.Le Beihang University Beijing 100191 Brookhaven National Laboratory UptonNew York 11973 Budker Institute of Nuclear Physics sB RAs Novosibirsk 630090 Centro de Investigacion y de Estudios Avanzados del Instituto Politecnico Nacional Mexico City 07360 Faculty of Mathematics and Physics Charles University12116 Prague Chiba University Chiba 263-8522 Consejo Nacional de Ciencia y Tecnología Mexico City 03940 Deutsches Elektronen–synchrotron 22607 Hamburg Duke University DurhamNorth Carolina 27708 Earthquake Research Institute University of TokyoTokyo 113-0032 Forschungszentrum Jülich 52425 Jülich Department of Physics Fu Jen Catholic UniversityTaipei 24205 Key Laboratory of Nuclear Physics and Ion-beam Application(MOE)and Institute of Modern Physics Fudan UniversityShanghai 200443 II.Physikalisches Institut Georg-August-Universität Göttingen37073 Göttingen Gifu University Gifu 501-1193 The Graduate University for Advanced studies(sOKENDAI) Hayama 240-0193 Gyeongsang National University Jinju 52828 Department of Physics and Institute of Natural sciences Hanyang UniversitySeoul 04763 High Energy Accelerator Research Organization(KEK) Tsukuba 305-0801 J-PARC Branch KEK Theory CenterHigh Energy Accelerator Research Organization(KEK)Tsukuba 305-0801 Indian Institute of science Education and Research Mohali SAS Nagar140306 Indian Institute of Technology Bhubaneswar Satya Nagar 751007 Indian Institute of Technology Hyderabad Telangana 502285 Indian Institute of Technology Madras Chennai 600036 Indiana University BloomingtonIndiana 47408 Institute for High Energy Physics Protvino 142281 Institute of High Energy Physics Vienna 1050 Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049 Institute of Particle Physics(Canada) VictoriaBritish Columbia V8W 2Y2 Institute of Physics Hanoi Instituto de Fisica Corpuscular Paterna 46980 INFN Laboratori Nazionali di Frascati I-00044 Frascati INFN sezione di Napoli I-80126 Napoli INFN sezione di Padova I-35131 Padova INFN sezione di Perugia I-06123 Perugia

From April to July 2018,a data sample at the peak energy of the T(4 s) resonance was collected with the Belle Ⅱ detector at the superKEKB electron-positron *** is the first data sample of the Belle Ⅱ *** Bhabha and digamma events,we measure the integrated luminosity of the data sample to be(496.3±0.3±3.0) pb-1,where the first uncertainty is statistical and the second is *** work provides a basis for future luminosity measurements at Belle Ⅱ.

关键词： luminosity Bhabha digamma Belle II

structural,dielectric and electrical properties of bismuth magnesium tantalate electronic system

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Journal of Magnesium and Alloys 2019年第4期7卷 628-636页

作者： sarbasri halder satyanarayan Bhuyan R.N.P.Choudhary Department of Electronics and Communication Engineering Siksha‘O’AnusandhanDeemed to be UniversityBhubaneswar 751030India Department of Physics Siksha‘O’AnusandhanDeemed to be UniversityBhubaneswar 751030India

The lead-free dielectric compound Bi(Mg2/3Ta1/3)O3(BMT)has been synthesized at high temperature by a low-cost solid-state *** X-ray diffraction(XRD)technique reveals that the fabricated sample has an orthorhombic crystal *** scanning electron microscope(sEM)image displays the uniform distribution of grains on the surface of the *** dielectric parameters(permittivity(εr),and loss tangent(tanδ)are studied over a wide range of temperature(150-500℃)and frequency(1 kHz-1 MHz).The temperature dependent conductivity plot follows Universal Johnson’s power *** complex impedance and modulus spectrum illustrate the electrical behavior of the compound at various frequency and *** Nyquist spectra show the presence of the effect of grain and grain boundary in the synthesized *** grain resistance value declines with the rise in temperature that shows the presence of a negative temperature coefficient(NTCR)behavior in the *** complex modulus spectra display the occurrence of the conduction mechanism in the *** reported compound has a relative dielectric constant and loss of 22×10^3 and 1.8 respectively at 1 kHz frequency and 500℃,thus becoming an efficient applicant for dielectric applications that can operate at higher temperatures.

关键词： XRD Impedance spectroscopy Conductivity Conduction

Indicators and tools for assessing sustainability impacts of the forest bioeconomy

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Forest Ecosystems 2017年第2期4卷 103-122页

作者： Jaakko Karvonen Pradipta halder Jyrki Kangas Pekka Leskinen Finnish Environment Institute Yliopistokatu 780100 JoensuuFinland Full list of author information is available at the end of the article University of Eastern Finland Faculty of Science and ForestrySchool of Forest SciencesP.O.Box 11180101 JoensuuFinland

The sustainable use of renewable resources has become an important issue worldwide in the move towards a less fossil-fuel-intensive *** method for fulfilling this aim is to increase the share of renewable energy and materials to substitute fossil fuels and to become fully independent from fossil fuels over the ***, the environmental sustainability of this endeavor has been *** addition,economic and social sustainability issues are also much debated topics in this particular *** resources are often thought to contribute partially to achieving a so-called ＂carbon-neutral society＂.In this review, we discuss sustainability issues of using forest *** present several sustainability indicators for ecological,economic and social dimensions and discuss the issues in applying them in sustainability impact assessments（sIAs）.We also present a number of tools and methods previously used in conducting *** approach our study from the perspective of the Finnish forestry; in addition, various aspects regarding the application of sIAs in a broader context are also *** of the key conclusions of the study is that although sufficient data are available to measure many indicators accurately, the impacts may be very difficult to assess（*** of greenhouse gases on biodiversity） for conducting a holistic ***, some indicators, such as ＂biodiversity＂, are difficult to quantify in the first ***, a mix of different methods, such as Multi-criteria Assessment, Life-cycle Assessment or Cost-Benefit Analysis, as well as different approaches（*** and strong/weak sustainability） are needed in aggregating the results of the *** are important in supporting and improving the acceptability of decision-making, but a certain degree of uncertainty will always have to be tolerated.

关键词： Forest bioeconomy sustainability Indicators Impact assessment Decision support

Tailoring in fungi for next generation cellulase production with special reference to CRIsPR/CAs system

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systems Microbiology and Biomanufacturing 2022年第1期2卷 113-129页

作者： subhadeep Mondal suman Kumar halder Keshab Chandra Mondal Center for Life sciences Vidyasagar UniversityMidnapore 721102West BengalIndia Department of Microbiology Vidyasagar UniversityMidnapore 721102West BengalIndia

Cellulose is the utmost plenteous source of biopolymer in our earth,and fungi are the most efcient and ubiquitous organism in degrading the cellulosic biomass by synthesizing *** through genetic manipulation has played a substantial role in constructing novel fungal strains towards improved cellulase production of desired ***,the traditional methods of genetic manipulation of fungi are time-consuming and *** the availability of the full-genome sequences of several industrially relevant flamentous fungi,CRIsPR-CAs(clustered regularly interspaced short palindromic repeats/CRIsPR-associated protein)technology has come into the focus for the profcient development of manipulated strains of flamentous *** review summarizes the mode of action of cellulases,transcription level regulation for cellulase expression,various traditional strategies of genetic manipulation with CRIsPR-CAs technology to develop modifed fungal strains for a preferred level of cellulase production,and the futuristic trend in this arena of research.

关键词： Cellulose Cellulase Fungi Genetic manipulation CRIsPR CAs

spectral coherence of white LEDs

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Photonics Research 2022年第11期10卷 2460-2470页

作者： ATRI halder JARI TURUNEN Institute of Photonics University of Eastern FinlandFI-80101 JoensuuFinland

We address space–frequency domain coherence properties of broadband light-emitting diodes(white LEDs) and fields radiated by them. Inverse-source techniques are employed to determine the spectral degree of spatial coherence of an effective planar source representing a real LED, and coherent elementary fields associated with *** fitting with experimental measurements, we formulate simple analytical coherence models that can be used as a basis for theoretical and experimental studies of the coherence of polychromatic stationary light in free space and in various optical systems. In particular, we find that radiation from white LEDs follows closely Wolf’s scaling law for spectral invariance [Phys. Rev. Lett. 56, 1370(1986)] in the blue and the phosphor-generated parts of the spectrum separately, but not across the entire white-light spectrum.

关键词： white spectral representing