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2023年Renison锡矿产量有望达9000吨 005

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2023年Renison锡矿产量有望达9000吨

Time-dependent diffusive interactions between dark matter and dark energy in the context of k-essence cosmology

中国有色金属报

作者： ita

本报讯近日，Metals X Limited宣布，其位于塔斯马尼亚州的Renison锡矿第二季度业绩强劲，矿石品位和回收率均有提高。在2023年第二季度，该公司共交付了2292吨锡精矿，比第一季度增长15%。尽管第一季度滑石和硫含量的升高造成了不...

本报讯近日，Metals X Limited宣布，其位于塔斯马尼亚州的Renison锡矿第二季度业绩强劲，矿石品位和回收率均有提高。在2023年第二季度，该公司共交付了2292吨锡精矿，比第一季度增长15%。尽管第一季度滑石和硫含量的升高造成了不利因素，但干预措施成功将第二季度的回收率

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Research in Astronomy and Astrophysics 2021年第1期21卷 15-24页

作者： Abhijit bandyopadhyay Anirban Chatterjee Department of Physics Ramakrishna Mission Vivekananda Educational and Research InstituteBelur MathHowrah 711202India

We investigated the scenario of time-dependent diffusive interaction between dark matter and dark energy and showed that such a model can be accommodated within the observations of luminosity distanceredshift data in Supernova la(SN la)observations.We obtain constraints on different relevant parameters of this model from the observational data.We consider a homogeneous scalar field(t)driven by a k-essence Lagrangian of the form L=V(φ)F(X)with constant potential V(φ)=V,to describe the dynamics of dark energy in this model.Using the temporal behaviour of the FRW scale factor,the equation of state and total energy density of the dark fluid,extracted from the analysis of SN la(JLA)data,we have obtained the time-dependence of the k-essence scalar field and also reconstructed the form of the function F(X)in the k-essence Lagrangian.

关键词： Dark Energy Dark Matter k-essence

The Fabrication of Water-Soluble Chitosan Capsule Shell Modified by Alginate and Gembili Starch(Dioscorea esculenta L)

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Journal of Renewable Materials 2022年第9期10卷 2365-2376页

作者： Yatim Lailun Ni’mah Suprapto Suprapto harmami ita Ulfin Puput Asmaul Fauziyah Chemistry Department Faculty of Science and Analytical DataInstitut Teknologi Sepuluh NopemberSurabayaIndonesia

Capsule shells have been successfully fabricated from water-soluble chitosan(WSC)with the addition of alginate and Gembili starch.WSC was synthesized from crab shell chitosan by depolymerization reaction.The capsule shells were made with the composition of WSC:Alginate,2:1,3:1 and 4:1(w/w)with and without the addition of Gembili starch.Gembili starch was added with a ratio of Alginate:Starch,1:1(w/w).The capsule shell properties were evaluated according to Indonesian Pharmacopoeia standard.The solubility test showed that the capsule shells were comply with the standard.The highest degrees of swelling in water and HCl 0.1 N solution were 491.93%and 410.51%,respectively.The highest degradation percentages in water and HCl 0.1 N solution were 57.80%and 21.44%,respectively.The observation of physical appearance indicated that the capsule shell with WSC:Alginate:Starch in ratio of 3:1:1 has appearance close to commercial capsule shell.

关键词： Capsule shell water soluble chitosan capsule shell degradation capsule shell solubility

From occupants to occupants:A review of the occupant information understanding for building HVAC occupant-centric control

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Building Simulation 2022年第6期15卷 913-932页

作者： tao Yang Arkasama bandyopadhyay Zheng O’Neill Jin Wen Bing Dong mike walker’66 department of mechanical engineering texas a&m universitycollege stationtx77843usa department of civil architectural&environmental engineeringdrexel universityphiladelphiapa19104usa department of mechanical and aerospace engineering syracuse universitysyracuseny13244usa

Occupants are the core of the built environment.Traditional heating,ventilation,and air-conditioning(HVAC)systems operate with predefined schedules and maximum occupancy assumptions with no consideration of specific occupant information.These generalized assumptions usually do not align with the actual demand and result in over-conditioning and occupant discomfort.In recent years,with the aid of Information&Communication Technology(ICT)and Computer Science(CS),it is possible to acquire real-time and accurate occupant information to satisfy the exact thermal requirement through specific HVAC control in one particular built environment.This mechanism is called HVAC“Occupant-centric Control(OCC).”HVAC OCC strategy starts with collecting the occupant’s information(e.g.,presence/absence)and then applies it to meet the occupant’s requirement(e.g.,thermal comfort).However,even though some research studies and field pilot demonstrations have been devoted to the field of OCC,there is a lack of systematic knowledge about occupant data,which is the principal component of OCC for HVAC researchers and practitioners.To fill this gap,this review paper discusses OCC with a particular emphasis on occupant information and investigates how this information can assist HVAC operation in providing an acceptable built environment in required spaces during the required time.We provide a fine-grained,comprehensive picture of occupant information,discuss its features,the modalities of information feed-in into the HVAC control,and the application of commonly utilized occupant information for OCC.

关键词： occupant information occupant-centric control smart building HVAC energy efficiency

试论当代作家对全球语境下人性变异的探索——以穆戈先生的短篇小说集《藏漂》为例

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中央民族大学学报（哲学社会科学版） 2015年第6期42卷 147-150页

作者：扎巴中央民族大学藏学研究院北京100081

就内容与主题而言,文学就是人性学,是一种反映人性,探究人性本质的艺术形式。穆戈先生创作的短篇小说集《藏漂》,从再现人格缺陷和品行变异的根源入手,揭示了影响人物性格特征和品德发展走向的三大因素:失去文化之根、失去故土之根和失... 详细信息

就内容与主题而言,文学就是人性学,是一种反映人性,探究人性本质的艺术形式。穆戈先生创作的短篇小说集《藏漂》,从再现人格缺陷和品行变异的根源入手,揭示了影响人物性格特征和品德发展走向的三大因素:失去文化之根、失去故土之根和失去精神之根。由此说明了"人是文化的动物"的深刻理念。在此意义上,穆戈先生的《藏漂》可以称得上文学人类学或曰文化哲学的新尝试。

关键词：藏族文学人性《藏漂》

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从情节解析故事与小说的区别

中国藏学（藏文版） 2021年第1期 122-131页

作者：扎巴中央民族大学中国少数民族语言文字学院

故事与小说都离不开情节,但其铺陈方式和目的都有区别。故事情节是按照时间顺序完整地交待一件事,其目的在于从故事背后说明一个道理。而小说的情节主要塑造人物形象,并从人物命运背后揭示某种道理。情节铺陈的差别主要在于,故事是以时... 详细信息

故事与小说都离不开情节,但其铺陈方式和目的都有区别。故事情节是按照时间顺序完整地交待一件事,其目的在于从故事背后说明一个道理。而小说的情节主要塑造人物形象,并从人物命运背后揭示某种道理。情节铺陈的差别主要在于,故事是以时间顺序展开,并通过叙事交代事件;小说情节则是按照逻辑顺序展开,并通过描写来塑造形象。

关键词：故事小说情节目的展开方式

Dependence of fluid flow on cleat aperture distribution and aperture–length scaling: a case study from Gondwana coal seams of Raniganj Formation, Eastern India

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International Journal of Coal Science & Technology 2020年第1期7卷 133-146页

作者： Krishanu bandyopadhyay Jyotirmoy Mallik Trishit Ghosh Indian Institute of Science Education and Research BhopalIndia Coal India Limited.Asansol.India

Dimensions and mutual relationships amongst fracture(cleat)parameters such as maximum aperture width,average aperture width,length,spacing etc.control the connectivity within a fracture network and the fluid flow in a coal seam as the matrix permeability,here,is negligible.In this paper,we document cleat size distributions and investigate length–aperture relationships from coals of Raniganj coalfield in Eastern India.This coalfield has a proven extractable reserve of six billion tons of coal and holds immense potential to be one of the largest coal bed methane fields serving India’s growing energy needs.Here,cleat length(L)correlates with corresponding maximum aperture width(Dmax)in a power-law function with an exponent of 0.84(DmaxαL0.84)instead of the commonly observed exponents of 1 or 0.5 applicable for other natural‘opening-mode’fractures.The conventional wisdom pertains that laminar fluid flow(Q)through an isolated,smooth-walled,parallel-plate fracture,embedded in an impermeable matrix,is directly proportional to the cube of its aperture width(b,equivalent to Davg;cubic law:Qαb3).This assumes a linear relationship between length and fracture aperture.However,the modified relationship between cleat length and average aperture width changes the cubic law applicable for Raniganj coal seam and now fluid flow correlates with aperture width in a power-law function with an exponent of 4.25(Qαb4.25)instead of 3(cube).Such simplifications will come handy for the modeling and estimation of fluid flow as it will reduce the effort of cleat length measurement which is anyway difficult and can be misleading due to the risk of undersampling.

关键词： CBM Cleat Coal Permeability Raniganj

Vitamin C and E supplementation and high intensity interval training induced changes in lipid profile and haematological variables of young males

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Sports Medicine and Health Science 2023年第2期5卷 137-145页

作者： Surojit Sarkar Swapan Kr Dey Gouriprosad Datta Amit bandyopadhyay Department of Physiology Rammohan College1021Raja Ram Mohan SaraniBaithakkhanaKolkata700009West BengalIndia Department of Sports Science University of CalcuttaUniversity Colleges of Science and Technology92A.P.C.RoadKolkata700009West BengalIndia Sports and Exercise Physiology Laboratory Department of PhysiologyUniversity of CalcuttaUniversity Colleges of Science and Technology92A.P.C.RoadKolkata700009West BengalIndia

High intensity interval training(HIIT)causes oxidative stress and haematological alteration.Present study was aimed to evaluate the effect of 8 weeks’supplementation of vitamin C and E on HIIT induced changes in lipid profile parameters and haematological variables.Hundred six male adolescent players were randomly assigned into five age-matched groups,i.e.,Control(no exercise+placebo),HIIT(placebo),HIIT+vitamin-C(1000mg/day),HIIT+vitamin-E 400 IU/day)and combined HIIT+vitamin C and E.Morning and evening sessions(90min)of HIIT included 4 phases(15min each)with 3 sets(4min each).Each 4min HIIT set consisted of 2min intense sprint workout(90%–95%of heart rate maximum[HRmax])followed by 1min active recovery(60%–70%HRmax)followed by 1min of complete rest(1:1 work-rest ratio).Lipid profile parameters,haematological variables,endurance capacity and vertical jump were evaluated by standard protocols.Significant decrease in body weight,fat%,total cholesterol,triglyceride,Total Cholesterol/High Density Lipoprotein-Cholesterol and significant increase in High Density Lipoprotein-Cholesterol,maximal oxygen consumption,vertical jump were observed for all four intervention groups.White blood cell count,red blood cell count,haemoglobin percentage and haematocrit values were significantly decreased while platelet count and platelet-to-leukocyte ratio(PLR)ratio were increased significantly only for HIIT group.Blood level of tocopherol and ascorbic acid was significantly increased(values were within the normal range)in all the respective vitamin supplemented groups.Supplementation of vitamin C and E secures health protection with suppressed haemolysis and improved inflammatory blood variables with enhanced explosive leg strength and lipid profile parameters without any concomitant change in endurance capacity.

关键词： Sprint interval training Lipid profile haematological indices haemolysis Athletes

Multimodal chemo-/magneto-/phototaxis of 3G CNT-bots to power fuel cells

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Microsystems & Nanoengineering 2020年第1期6卷 1149-1160页

作者： Shirsendu Mitra Nirmal Roy Surjendu Maity dipa.ka. bandyopadhyay Department of Chemical Engineering Indian Institute of Technology GuwahatiGuwahatiAssam 781039India Centre for Nanotechnology Indian Institute of Technology GuwahatiGuwahatiAssam 781039India

We report the development of a 3G microswimmer,namely,CNT-bot,capable of undergoing acid-,alkali-,magneto-and phototaxis inside acidic or alkaline baths of peroxide fuel and/or water.The use of carboxyl-functionalised multi-walled carbon nanotubes(MWCNTs)facilitated the propulsion of CNT-bots in an alkaline-water solution by ejecting carbon-dioxide bubbles.Furthermore,doping of magnetite nanoparticles(FeONPs),ferrous ions(Fe^(2+))and titanium dioxide nanoparticles(TiONPs)induces magnetic,chemical and photonic modes of propulsion.While FeONPs stimulated magnetotaxis at a rate of up to~10 body lengths per second under the influence of a bar magnet,chemotaxis of a similar speed in a peroxide fuel was achieved by bubble-propulsion of oxygen gas originating from the Fenton reaction.In addition,the light-stimulated photo-Fenton reaction led to phototaxis of CNT-bots.A thin coating of magnesium imparted a half-faced Janus appearance to the CNT-bots,which facilitated motion in normal or acidic water media through the ejection of hydrogen gas bubbles.This chemotaxis could be transformed into pH-stimulated directional motion by establishing an acid or alkali concentration gradient across the peroxide and/or water baths.The capacity of CNT-bots to produce oxygen(hydrogen)bubbles in peroxide(acidic water)fuel was exploited to power a PEM fuel cell to generate electricity.The pure oxygen and hydrogen gases generated by CNT-bots in separate chambers were fed directly into the fuel cell in which the incessant motions of the particle facilitated the creation and release of the pure gases to achieve on-demand electricity generation.The motor could also induce dye degradation through advanced oxidation owing to the production of intermediate hydroxyl radicals during the Fenton reaction.

关键词： alkali dioxide gases