4,406 Result(s)

Article

Enzymatic synthesis of deshexapeptide insulin

The semisynthesis of deshexapeptide insulin (DHI) from desoctapeptide insulin (DOI) reported earlier¹ showed that DHI was biologically active. However, the product was not quite homogeneous, mainly due to the est...

Q. P. Cao, D. F. Cui, Y. S. Zhang in Nature (1981)

Article

The **gaze ophiolite (Tibet): a peculiar oceanic lithosphere

The **gaze ophiolite which outcrops along the Yarlung Zangbo river, southern Tibet, locally displays a complete ophiolitic sequence from marine sedimentary cover over basaltic volcanics to the north, to fresh ...

A. Nicolas, J. Girardeau, J. Marcoux, B. Dupre, Wang **bin, Cao Yougong… in Nature (1981)

Article

The Tibetan side of the India–Eurasia collision

Results are reported from the 1980 joint French–Chinese field expedition in Tibet. The area covered was from the High Himalaya in the south, to the region of Nagqu ∼250 km north of Yangbajain. Ophiolites in th...

P. Tapponnier, J. L. Mercier, F. Proust, J. Andrieux, R. Armijo, J. P. Bassoullet… in Nature (1981)

Article

Intensity of the geomagnetic field near Loyang, China between 500 BC and AD 1900

There are remarkably few data on the intensity of the geomagnetic field in early China. New results reported here indicate that the total intensity of the magnetic field of the Earth in the region near Loyang ...

Q. Y. Wei, D. J. Li, G. Y. Cao, W. S. Zhang, S. P. Wang in Nature (1982)

Article

Structure and evolution of the Himalaya–Tibet orogenic belt

The 1981 French–Chinese expedition to Tibet focused on the Lhasa block, extending earlier coverage 400 km north of the Tsangpo suture. The Lhasa block stood between 10 and 15° N latitude over most of the Upper...

C. J. Allégre, V. Courtillot, P. Tapponnier, A. Hirn, M. Mattauer, C. Coulon… in Nature (1984)

Article

Strategy by which nitrogen-fixing unicellular cyanobacteria grow photoautotrophically

Among nitrogen-fixing microorganisms, nitrogen-fixing cyanobacteria are unique in their ability to carry out oxygen-evolving photosynthesis and oxygen-labile nitrogen fixation within the same organisms^1–3. These ...

A. Mitsui, S. Kumazawa, A. Takahashi, H. Ikemoto, S. Cao, T. Arai in Nature (1986)

Chapter

Seismicity Simulation with a Rate- and State-Dependent Friction Law

The dynamic motions and stabilities of a single-degree-of-freedom elastic system controlled by different friction laws are compared. The system consists of a sliding block connected to an elastic spring, drive...

Tianqing Cao, Keiiti Aki in Friction and Faulting (1987)

Chapter

Effect of Slip Rate on Stress Drop

Recent observations made by Kanamori and Allen about earthquake recurrence time and average stress drop revealed a very interesting relation: earthquakes with longer recurrence times have higher average stress...

Tianqing Cao, Keiiti Aki in Friction and Faulting (1987)

Article

Independent binding of the retinoblastoma protein and p107 to the transcription factor E2F

THE cellular protein p107 and the retinoblastoma protein (pRB) have many features in common. Most strikingly, they contain homologous protein domains that mediate interaction with the oncoproteins of several s...

Liang Cao, Barbara Faha, Marlene Dembski, Li-Huei Tsai, Ed Harlow, Nicholas Dyson in Nature (1992)

Chapter

Cellular Effects of Extremely Low Frequency (ELF) Electromagnetic Fields

Epidemiological studies have revealed a possible association of cancer risk (predominently leukemia and brain center) with environmental and occupational exposure to low intensity, extremely low frequency (ELF...

Stephen F. Cleary, Li-Ming Liu, Guanghui Cao in Charge and Field Effects in Biosystems—3 (1992)

Article

Flexible light-emitting diodes made from soluble conducting polymers

THE recent fabrication of light-emitting diodes (LEDs) from conjugated polymers^1,2demonstrates the technological potential of this class of electronic materials. A variety of colours are possible, because the wav...

G. Gustafsson, Y. Cao, G. M. Treacy, F. Klavetter, N. Colaneri, A. J. Heeger in Nature (1992)

Article

Elevated blood pressure and craniofaclal abnormalities in mice deficient in endothelin-1

The endothelin-1 (ET-1) gene was disrupted in mouse embryonic stem cells by homologous recombination to generate mice deficient in ET-1. These ET-1^-/- homozygous mice die of respiratory failure at birth and have ...

Yukiko Kurihara, Hiroki Kurihara, Hiroshi Suzuki, Tatsuhiko Kodama, Koji Maemura… in Nature (1994)

Article

A matrix metalloproteinase expressed on the surface of invasive tumour cells

GELATINASE A (type-IV collagenase; M_r 72,000) is produced by tumour stroma cells and is believed to be crucial for their invasion and metastasis, acting by degrading extracellular matrix macro-molecules such as t...

Hiroshi Sato, Takahisa Takino, Yasunori Okada, Jian Cao, Akira Shinagawa… in Nature (1994)

Article

Partial activation of CD8⁺ T cells by a self-derived peptide

T CELLS are normally activated when the peptide for which they are specific is presented to them in the context of the appropriate major histocompatibility complex (MHC) (class I and Class II for CD8⁺ and CD4⁺ T ...

Wuxiong Cao, Scott S. Tykodi, Mark T. Esser, Vivian L. Braciale… in Nature (1995)

Article

Scavenger receptor-mediated adhesion of microglia to β-amyloid fibrils

A PATHOLOGICALhallmark of Alzheimer's disease is the senile plaque, containing β-amyloid fibrils, microglia and astrocytes¹. β-amyloid fibrils exert a cytotoxic effect on neurons², and stimulate microglia to pro...

Joseph El Khoury, Suzanne E. Hickman, Christian A. Thomas, Long Cao… in Nature (1996)

Article

TRAF6 is a signal transducer for interleukin-1

MANY cytokines signal through different cell-surface receptors to activate the transcription factor NF-κB (ref. 1). Members of the TRAF protein family have been implicated in the activation of NF-κB by the tu...

Zhaodan Cao, Jessie **ong, Masahiro Takeuchi, Takeshi Kurama, David V. Goeddel in Nature (1996)

Article

Effect of static magnetic field on activity of immobilized α-amylase

Liushui Yan, Yuanbao Zhu, Shuang’e He, Zhixiang Cao in Chinese Science Bulletin (1997)