365,381 Result(s)

Article

The lie algebra of invariant group of the KdV, MKdV, or Burgers equation

Let (E): u _t=H(u) denote the KdV, MKdV or Burgers equation, and U(s)=Σ(D^j _s)∂/∂u _j, where D=d/dx, u _i=Dⁱ _u, s=s(u, u ₁, ..., u _n) is a polynomial of u _i with constant coefficients, be the generator of invariant g...

Tu Gue-Zhang in Letters in Mathematical Physics (1979)

Article

Les experiences des amenagements hydro-agricoles et hydro-electriques dans les regions karstiques au sud-ouest de la Chine

Dans le Sud-ouest de la Chine les terrains karstiques sont en grande majorité. Dans ces régions, de nombreux aménagements hydro-agricoles et hydro-électriques ont été affectés par des fuites d'eau à travers de...

Lu Hong, Mo **lin, Zhang Ruqing in Bulletin of the International Association … (1979)

Article

A commutativity theorem of partial differential operators

Letu=u(x, t) be a function ofx andt, andu _i =D ⁱ u,D=d/dx,i=0, 1, 2, ..., be its derivatives with respect tox. Denote byW

Gui-zhang Tu in Communications in Mathematical Physics (1980)

Article

A study of raindrop size distributions in central and northwest China and their effects on some propagation parameters for wavelengths from 0.86 cm to 10 cm

The effect of rain on radio propagation depends on the raindrop dimensions and shapes. For spherical raindrops, results of a statistical analysis of measurements are presented: the parameters of the raindrop s...

H. J. Li, Z. W. Zhang in Annales des Télécommunications (1980)

Article

Loess in China

Zhang Zunghu in GeoJournal (1980)

Article

Karst types in China

In this paper an attempt is made to better understand the regularities of karst development and karst distribution in China on the basis of analyses of karst morphogenetic types in China. The different associa...

Zhang Zhi gan in GeoJournal (1980)

Article

The forced response of the lamped dynamic systems

This paper deals with the forced harmonie responses of the discrete or continuous damped systems to harmonic excitation, where the viscous dam** matrix cannot be diagonalized. The explicit expressions of the...

Zhang Wen in Applied Mathematics and Mechanics (1980)

Article

Precambrian microfossils from the Sinian of South China

The discovery of previously unknown microfossils from the Sinian of western Hubei Province, South China (Fig. 1) is reported here. The Sinian there, up to 1,000 m thick, is naturally divisible into four format...

Zhang Zhongying in Nature (1981)

Article

A statistical analysis of the power law and the logarithmic law using wind data from a 164 m tower

The wind speed distribution with height is analysed by using hourly data for a full year recorded at 6 levels of a 164 m tower at Nan**g. A statistical error analysis shows that power law and logarithmic law ...

Shi Feng Zhang in Boundary-Layer Meteorology (1981)

Article

Das linksatriale Myxom

Chen **afeng, Ge Youxin, Chen Qifu, Zhang Lianghua… in Acta Academiae Medicinae Wuhan (1981)

Article

Effects of electro-acupuncture and exogenous transmitters applied microiontophoretically on pain discharges in mesencephalic reticular formation

This work was performed on 72 albino rats immobilized by tubocurarine. Our results suggest that electro-acupuncture might evoke a release of neurotransmitters including noradrenaline and 5-hydroxytryptamine at...

Huang Chengjun, Zhang Zidong, Liu Zuoyan, Tu Zongpin… in Acta Academiae Medicinae Wuhan (1981)

Article

Relationship between column efficiency and column length in chromatography: Efficiency of small-bore HPLC columns of different length

The relationship between column length and efficiency is theoretically derived. Based on experimental data, the validity of the relationships between peak width and retention time, and between plate height, co...

Yukui Zhang, Guimin Zhou, Miansheng Bao, **uzhen Li, Peichang Lu in Chromatographia (1981)

Article

Über Isolierung und Identifizierung eines neuen Typs von Enterovirus aus akuten epidemischen hämorrhagischen Konjunktivitisfällen

Aus akuten hämorrhagischen Konjunktivitisfällen wurden 3 Virusstämme isoliert. Ihre Resistenz gegen Äther, Säure, Iododeoxyuridine spricht für ihre Zugehörigkeit zum Enterovirus. Weil ein Vertreterstamm (Hu) d...

Deng Ruilin, Xu Huitang, Chen **uzhu, Zhang Ren**g in Acta Academiae Medicinae Wuhan (1981)

Article

Semi-microscopic optical potential calculation by the nuclear matter approach

In this paper the semi-microscopic nuclear matter approach has been introduced to calculate the microscopic optical potential. The first- and second-order mass operators in asymmetric nuclear matter have been ...

Shen Qingbiao, Zhang **gshang, Tian Ye… in Zeitschrift für Physik A Atoms and Nuclei (1981)

Article

Second-rank tensors inSU _n gauge theory

H. Mitter, Yi-Cheng Zhang in Lettere al Nuovo Cimento (1971-1985) (1981)

Article

Diagnose und Differentialdiagnose der Conjunctivitis vernalis: klinische und zytologische Beobachtungen

Im Gebiet von Hubei haben wir 86 Fälle von Conjunctivitis vernalis klinisch und zytologisch genau untersucht und erkannten dabei, daß diese Krankheit in der täglichen Praxis ziemlich häufig falsch diagnostizie...

Ji Minsheng, Zhang Shujuan in Acta Academiae Medicinae Wuhan (1981)

Article

Sn In silicon carbide: A mossbauer and channeling study

Implantation of Sn at ∼550°C into SiC and post-annealing at 1120°C has been demonstrated to lead to a predominant population of the substitutional Si sites. The electronic structure of the Sn atoms in substitu...

J. W. Petersen, J. U. Andersen, S. Damgaard, F. O. Lu… in Hyperfine Interactions (1981)

Article

Resonant and gap modes due to B in GaP

G. A. Gledhill, S. S. Kudhail, R. C. Newman… in International Journal of Infrared and Mill… (1981)

Article

Comments on ‘on the determination of boundary-layer parameters using velocity profile as the sole information’ by LO (1979)

Shi F. Zhang in Boundary-Layer Meteorology (1981)