9,917 Result(s)

Article

Efficiency of small-bore HPLC-columns in different liquid chromatographs

It is demonstrated that small-diameter (2 mm) columns can provide their full efficiency only if the instrument is specially designed for them. In general purpose commercial instruments actual column performanc...

Hongwei Chen, Miansheng Bao, Shuhua Fang, Peichang Lu in Chromatographia (1981)

Article

Magnetic interactions possessing point group symmetry and their application to ruby

By utilizing the magnetic interactions possessingC _3v symmetry, the author has deduced the general expressions for theg-factors, zero-field splitting and effective magnetic moment...

Minguang Zhao, Zhongwei Ma, Zhenguo Yang in Geochemistry (1982)

Article

Magnetic properties, characteristic spectra and colors of turquoise

The unique bright bluish-green color of turquoise as a high-grade jade has long received wide attention. The relationship between the color of turquoise and its composition and structure is described in this p...

Huifen Zhang, Chuanyi Lin, Zhongwei Ma, Zhenguo Yang, Enlin Zhang in Geochemistry (1984)

Article

Periodic solutions for the semilinear spherical wave equation

Chang Kungching, Hong Chongwei in Acta Mathematica Sinica (1985)

Article

Free vibrations ofn-dimensional balls

Hong Chongwei in Acta Mathematica Sinica (1985)

Chapter and Conference Paper

The statistical analysis of Supernovae

Zongwei Li in Atmospheric Diagnostics of Stellar Evoluti… (1988)

Chapter and Conference Paper

A Study of the Cosmic Constant H₀ with SN1

To determine the accurate value of the Hubble constant H_o Is one of the most Important things of cosmology. Since 1929 the value has been revised from 550 km/s. Mpc to 50–100 km/s. Mpc.

Wu Shimin, Guo Wanwen, Li Zongwei in High Energy Astrophysics (1988)

Article

Geothermal observations in east Liaoning and haicheng seismic area

We have obtained altogether heat flux data of 23 drill holes including 2 observational holes of thermal flow in the Haicheng seismic area. These data show roughly thermal structure of the crust in eastern Liao...

Andong Wang, Yuhe Ren, Wenfu Sun, Longwei Yu, **gming Liang… in Acta Seismologica Sinica (1988)

Chapter and Conference Paper

Is NGC 22142 a New Planetary Nebula?

An interesting object was found on the IllaJ objective prism plate SP1270, taken on Jan. 12.6 UT, 1983 with the Bei**g Observatory 60/90-cm Schmidt telescope plus 5ọ3 objective prism with a dispersion of 580 ...

Liu Jiying, Huang Yongwei, Feng **ngchun in Planetary Nebulae (1989)

Article

The role of psychosocial stressors, personality and co** in the multifactorial origin, initiation and clinical course of neoplastic disease and in host-deffense

Retrospective and prospective biobehavioral cancer studies have revealed that psychosocial stressors may play a pivotal role in the initiation and progression of malignant neoplasia. In recent research, a patt...

Hans-Joachim F. Baltrusch, Zhang Zongwei in Chinese Journal of Cancer Research (1989)

Article

Artificial regeneration of Korean spruce in northeast China

Korean spruce (Picea koraiensis Nakai) has been included as a Chinese regeneration species since the 1960′s. In the 1970′s it became one of the four most important species in the northeast forest region of China....

Zhan Hongzhcn, Zhang Tongwei, Wang Fengyou in Journal of Northeast Forestry University (1990)

Article

A study on the structures of glasses based on CdCl₂ and PbCl₂

Jiang Haochuan, Yuan Biao, Sun Hongwei, Gan Fuxi in Journal of Materials Science Letters (1991)

Article

Gravitational field of a family of SU(5) dyons

By solving the coupled SU(5) Einstein-Yang-Mills-Higgs equations, we obtain the exact Reissner-Nordstrom type gravitational field of a family of spherically symmetric SU(5) dyons with magnetic charge 1/2e.

Hongwei Yu in General Relativity and Gravitation (1991)

Article

Millimeter wave beams diffracted from reflecting gratings

According to the angular-spectrum method, a radiation beam of an antenna horn in the Fresnal region is decomposed into the plane waves with the fast Fourier transform algorithm and the waves diffracted from a ...

**angdong Liu, Hongwei Liu, Kexu Yuan… in International Journal of Infrared and Mill… (1991)

Article

Determination and evaluation of some trace elements in Chinese foodstuffs

The concentrations of trace elements As, Br, Cd, Cr, Cu, Hg, Pb, Sb, Se and Zn in Chinese foodstuffs were determined by instrumental or radiochemical neutron activation analysis or atomic absorption spectromet...

Sun Laiyan, Lu Fengying, Su Rongwei… in Journal of Radioanalytical and Nuclear Che… (1991)

Article

Complex equilibria of molybdenum(V) and molybdenum(VI) witho-hydroxybenzylamine-N,N,O-triacetic acid (HBATA)

Complex reactions between Mo^V.VI ando-hydroxybenzylamine-N,N,O-triacetic acid (HBATA) have been investigated in the 1–3 and 2.8–6.5 pH range by potentiometric titration at 30° C in 0.5 mol dm⁻³ NaCl. The equilibr...

Zhang Hualin, Wang Yongwei in Transition Metal Chemistry (1991)

Chapter and Conference Paper

The X-Ray Scanning Microscope Beam Branch Line and Its Scanning System Design at BEPC

A VUV-SXR spherical grating monochromator beam line 4B9B has been completed and is now operating with the Bei**g Electron-Positron Collider (BEPC) in a 1.55 GeV colliding beam mode and 2.2 GeV SR dedicated mo...

Deming Shu, Wei Wang, Motuo Wang, **g Liu, Wei He, Yonghai Zhang… in X-Ray Microscopy III (1992)

Article

Climatic jumps in the flood/drought historical chronology of central China

Statistical series of flood/drought (F/D) grades and F/D variabilities were derived for the flood and drought chronology (2700 bc-1980 AD) of central China. Two types of climatic jumps were analyzed. The moving s...

Yan Zhongwei, Ye Duzheng, Wang Cun in Climate Dynamics (1992)

Chapter and Conference Paper

A Note on L ^p Estimates for Parabolic Systems in Lipschitz Cylinders

Let Ω be a bounded Lipschitz domain in R ⁿ. Consider the parabolic system (1) $$\frac{\partial\vec{u}}{\partial ...

Russell M. Brown, Zhongwei Shen in Partial Differential Equations with Minima… (1992)