Tb3+,Dy3+-co-doped Ca9TbxDy1-x(PO4)5(SiO4)F2 phosphors were prepared via high-temperature solidphase reaction method and......

Recently, the Tertiary red clay sequence underlying Pleistocene loess has attracted much attention. The remarkable progr......

Leaf nitrogen(N) and phosphorus(P) concentrations are critical for photosynthesis, growth, reproduction and other ecolog......

A buttress on the need for welfare program in Nigeria and the important obligation to consider the Economics’and CIA’s......

This paper was developed as part of an effort by the National Institute for Occupational Safety and Health(NIOSH)to iden......

Although the performance of membrane reactors (MR) is highly affected by the ratio of membrane area-toreaction volume, t......

A study has been reported on ²⁰⁸Pb/²⁰⁶Pb and ²⁰⁷Pb/²⁰⁶Pb ratio variations in......

It is urgent to develop excellent solid CO₂ sorbents with higher sorption capacity, simpler synthetic process......

对酒糟与棉籽壳不同比例的配方栽培平菇进行了初步探索．结果表明２５％的酒糟加７５％的棉籽壳栽平菇效果好；１００％的棉籽壳次之；酒糟和棉籽壳各占５０％产量第......

Geochemical ratios in coral reef skeletons could be used as proxies to reconstruct past climatological and environmental......

通过对1995～2005年海水样品的采集、检测及查阅相关文献资料获得渤海湾氮、磷营养盐的数据资料。讨论了渤海湾氮磷比的变化趋势、年......

根据1962年-1998年81个航次的调查和历史资料，讨论了胶州湾营养盐及其结构的长期变化和对生态环境的影响。近40年来，胶州湾无机N和P......

基于交叉口转弯比例列出路网流量守恒的线性方程组，其系数矩阵表示路网中路段问交通流向的逻辑关系，采用“点线变换”的方法给出这种......

对产自陕西的一种弱粘煤进行了实验室研究,探讨了高炉喷吹弱粘煤的可行性。结果证实,弱粘煤具有低硫、高发热值等特点,是高炉喷吹......

A new method for determining the partial melting depth of mantle-derived magma and lithospheric thickness in continental......

A recent review publication presented an extensive and comprehensive assessment of the phenomenological relations of Poi......

The copolymerization of DL-LA and 3-BMG was carried out in bulk with stannous 2-ethylhexanoate as the catalyst. A series......

The effect of F/M on acidification characteristics during anaerobic digestion of kitchen waste was investigated. Under d......

本文根据“薄弱环节”理论，利用概率统计的方法，分析了在相同材质，相同寿命，相同存活率下硬齿面齿轮接触疲劳和滚子接触疲劳强度之间的......

The characteristics of grain-size,total organic carbon（TOC） and total nitrogen（TN） contents,TOC/TN ratios,stable carbon isot......

The copolymerizations of methyl acrylate (MA) with different N- arylmethacrylamide (N-ArMA) were carried out in benzene ......

The monomer reactivity ratios of free radical copolymerization of styrene and methyl methacrylate in carbon dioxide at v......

The ageing of the population in Japan has become a problem. According to the research of different regions, where the ra......

The Precambrian rocks in Wadi Fatirah-Wadi Abu Zawal area, Eastern Desert of Egypt, are crosscut by numerous post-orogen......

The Kehdolan area is located at 20 kilometers to the?south-east of Dozdozan Town (Eastern Azarbaijan Province). Accordin......

Field studies (location Au pits, sampling of different layers of sedimentary sequences filling the pits, panning of sedi......

The utilization of carburizing materials in surface engineering has undergone many tremendous changes. Effective quality......

This study examines the issues in development of pharmacokinetic single compartment model for systems that obey free rad......

A frequency ratio RatioXH associated with two carrier frequencies in ppm is introduced for achieving auto-offsetting and......

The streambed sediments of the Suez Canal have been analyzed for determining the natural radionuclides and long-lived ra......

This study was undertaken to investigate the influence of Pb contaminant dispersal from an abandoned mine. For the study......

Raw and fried plantain chips obtained from the use and re-use of olive, refined palm olein and coconut oils were investi......

Two field experiments were conducted during two successive winter seasons of 2008/2009 and 2009/2010 to investigate the ......

We investigated the natural oscillations of dissipative inhomogeneous plate mechanical systems with point connections. B......

Chronic systemic inflammation is associated with many conditions of aging such as atherosclerosis. Lowering high n-6:n-3......

Dissolved gas analysis is the most widely used diagnostic test in power transformers. The aim of this paper is to introd......

Concentrations and distributions of Rb and Sr in loess and palaeosol samples from the Luochuan profile have been studied......

Warp knitting technology gets rapid development at present and becomes one of the most important parts of the textiles.B......

Redox potential has principal influences on formation and attribute of soils and it is necessary to research the measure......

FCNC processes offer important tools to test the Standard Model(SM)and to search for possible new physics.In this work,w......

This paper analyzes the basic characters ofoptimum open-pit limit.According to them,following gener-al rule for designin......

Discontinuities are an inherent part of the rock mass and majorly affect the stability of the excavation skin and pillar......

The reconstruction of sea surface temperature(SST) is a key issue in research on paleoceanography. The recently related ......

Through direct shear and triaxial compression tests, effects of expanded polystyrene (EPS) mass ratios in sand-EPS mixtu......

Molybdenum phosphide(MoP) catalyst has been widely applied in hydrogenation reactions, while the preparation of unsuppor......

The authors measured Pb isotope compositions of seven USGS rock reference standards, i.e. AGV-1, AGV-2, BHVO-1, BHVO-2, ......

【正】1 Introduction Lake Qinghai,famous as the largest inland saline lake in China,located on the high-altitude northea......

Pine wood nematode(PWN), Bursaphelenchus xylophilus, is a serious pathogen of pines throughout the world. Previous work ......

Traditionally, soil-testing laboratories have used a variety of methods to determine soil organic matter, yet they lack ......

It is well-known that the power of Cochran’s Q test to assess the presence of heterogeneity among treatment effects in ......