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Nitrogen deposition as an important nutrient from the environment and its impact on ecosystems in Ch
[期刊论文] 作者：XueJun LIU,Ling SONG,ChunE HE,,
来源：干旱区科学 年份：2004
As an example of atmospheric nitrogen (N) deposition,the paper summarizes the definition,form and amount of nutrient from the environment (NFE) and the relation...
Estimating total nitrogen deposition in agroecosystems in northern China during the wheat cropping s
[期刊论文] 作者：ChunE HE,XueJun LIU,Christie P,
来源：干旱区科学 年份：2004
Atmospheric nitrogen (N) deposition has been poorly documented in northern China, an in-tensive agricultural and industrial region with large emissions of NHx a...
[期刊论文] 作者：Han Jun,He Minghao,Tang Zhikai,
来源：电子科学学刊 年份：2004
It is important to estimate the Signal-to-Noise Ratio (SNR) of unknown emitter signal accurately. In order to resolve the disadvantages of present algorithm, a...
The effects of temperature and acid number of crude oil on the wettability of acid volcanic reservoi
[期刊论文] 作者：Xie Quan,He Shunli,Pu Wanfeng,
来源：石油科学（英文版） 年份：2004
Wettability of acid volcanic reservoir rock from the Hailar Oilfield, China, was studied with crude oils of different acid numbers generated from an original cr...
[期刊论文] 作者：Xia Lihua,He Jianfeng,Zhang Fa,
来源：极地研究（英文版） 年份：2004
In order to study the adaptability of Arctic mieroalgae to different environmental temperatures, the growth curves and antioxidase system of three microalgae (...
[期刊论文] 作者：RuiXia He,HuiJun Jin,LanZhi L,,
来源：寒旱区科学（英文版） 年份：2004
The cold-region eco-environments along the China-Russia Crude Oil Pipeline(CRCOP)in northern Northeast China are in disequilibrium due to the combined influence...
[期刊论文] 作者：Wei Junfa,SHI Xianying,He Dipi,
来源：科学通报 年份：2004
The oxidation of cyclohexanol to cyclohexanone with 30% aqueous hydrogen peroxide by using peroxotungstate complexes formed in situ from sodium tungstate dihydr...
[期刊论文] 作者：HE Zejun,JIANG Weizhou,ZHANG J,
来源：核技术（英文版） 年份：2004
Initial values of thequark-gluon plasmasystem from relativistic nucleus-nucleus collisions are discussedunder thermodynamic equilibrium.From these initial value...
[期刊论文] 作者：ZHAO Dong-yan,ZHOU Lei,HE Ning,
来源：中国海洋工程（英文版） 年份：2004
Stability design of submarine pipelines is a very important procedure in submarine pipeline engineering design. The calculation of hydrodynamic forces caused by...
Rectifying control of wire diameter during dieless drawing by a deformation measuring method of inte
[期刊论文] 作者：Yong He,Xue-feng Liu,Fang Qin,,
来源：矿物冶金与材料学报 年份：2004
A deformation measurement method of interframe displacement was proposed in this paper.By online monitoring the shape dimensions of both the deformation zone an...
[期刊论文] 作者：DU Ailing,GUO Xiaofei,ZHANG He,
来源：稀有金属（英文版） 年份：2004
The chemical and electrochemical equilibria of the chlorine-titanium system in the presence of gaseous phase were investigated. Many species, which consisted of...
Finite difference time domain method forward simulation of complex geoelectricity ground penetrating
[期刊论文] 作者：DAI Qian-wei,FENG De-shan,HE J,
来源：中南工业大学学报（英文版） 年份：2004
The ground penetrating radar(GPR) forward simulation all aims at the singular and regular models, such as sandwich model, round cavity, square cavity, and so on...
[期刊论文] 作者：WANG Jianjun,LIN Heshan,HE Xue,
来源：海洋学报（英文版） 年份：2004
Field sampling of the macrobenthos from 23 stations in the Chukchi Sea was conducted during the 4th CHI-NARE (Chinese National Arctic Research Expeditions, July...
[期刊论文] 作者：Cai Han-Peng,He Zhen-Hua,Li Ya,
来源：应用地球物理（英文版） 年份：2004
Noise intensity distributed in seismic data varies with different frequencies or frequency bands; thus, noise attenuation on the full-frequency band affects the...
[期刊论文] 作者：Zhang Gu-Lan,Wang Xi-Ming,He Z,
来源：应用地球物理（英文版） 年份：2004
In order to obtain stable intervalQ factor, by analyzing the spectrum of monitoring wavelet and down-going wavelet of zero-offset VSP data and referring the spe...
[期刊论文] 作者：He Tao,Li Hong-Lin,Zou Chang-C,
来源：应用地球物理（英文版） 年份：2004
The bottom-simulating refl ector (BSR) is a seismic indicator of the bottom of a gas hydrate stability zone. Its depth can be used to calculate the seafl oor su...
Cyclooxygenase-2 promoter polymorphism -899G/C is associated with hepatitis B-related liver cancer i
[期刊论文] 作者：HE Jian-hong,LI Yu-min,ZHANG Q,
来源：中华医学杂志（英文版） 年份：2004
Background Hepatitis B virus infection is closely related to hepatocellular carcinoma (HCC).Cyclooxygenase-2 (COX-2) is overexpressed in HCC and considered to...
[期刊论文] 作者：ZHOU Lingli,ZHAI Guoqing,HE Bi,
来源：大气科学进展（英文版） 年份：2004
The Advanced Weather Research and Forecasting Model (ARW) is used to simulate the local heavy rainstorm process caused by Typhoon Matsa over the northeastern co...
[期刊论文] 作者：Dong-Ha LEE,Hong-Sic YUN,He HU,
来源：中国海洋工程（英文版） 年份：2004
The national benchmarks on islands were mostly established by trigonometric leveling in Korea. This method results in inaccuracy, which is a serious problem in...
[期刊论文] 作者：LIANG He,ZHAO Yong-long,ZANG B,
来源：中南大学学报（英文版） 年份：2004
To provide theoretical basis and practical guidance for preparing composite rods of external diameter no larger than 12 mm by directly continuous casting,low me...
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