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<正> Herschbach’s electronegativity ordering rule is a very useful empirical one. According to the rule, a reaction bet......
EFFECT OF PLANT HORMONES ON RESTORATION OF NITRATE REDUCTASE (NR 1.6.6.2) ACTIVITY OF MOLYBDENUM-DEF
<正> Mo-deficiency exercises a conspicuous effect on the NR activity of plant tissues, and little detectable NR activity......
A marine geophysical survey was carried out, on the R/V Science 1 of the Institute of Oceanography, Chinese Academy of S......
The stability analysis is one of the chief problems at hydropower stations.The Tengzigou Hydropower Station is a signifi......
Two new diterpenoids,3,4,18β-cyclopropa-ent-abieta-8(14),13(15)-dien-16,12-olide(1) and 3-oxojolkinolide B(2),were isol......
A new triterpenoid saponin.3 β-O-{ β-D-glucopyranosyl-(1—4)-[ β-D-glucopyranosyl-[1-2)]- α-L-arabinopyranosyl}-16α......
There are increasing evidences for the presence of an endogenous digitalis-like substance (EDLS) which interacts with th......
A new lignan glycoside was isolated from the n-butanol extract of the roots and rhizomes of Sinopodophyllum emodi.On the......
The detailed structure of catalytic center of water oxidation, Mn4Ca-cluster, in photosystem ⅡI (PSII) has been reporte......
Two new phenylethanoid glycosides,himalosides A(1) and B(2),were isolated from the whole plant of Boschniakia himalaica,......
Management of difficult wounds can be a complex,challenging and expensive task,especially for wounds showing a slow heal......
One new sesquiterpene lactone,1 α,8 α,9 α-trihydroxyeudesman-3(4),7(11)-dien-8 β,12-olide(1) and two new phenylpropa......
Objective To investigate the distribution and drug sensitivity of pathogens isolated from diabetic foot ulcer(DFU) secre......
The phytochemical investigation on the ethanolic extracts of thebarks of Taxus yunnanensis (Taxaceae) led to the isolat......
For the various copper deposits studied during the year 1940 in the three southwestern provinces of Szechuan, Sikang an......
Observations on the tectonic of the upper Val Seria and Val di Càtsola(Adamello Group).The Author examines the structu......
This work provides some evidences for the saponinproduction of Panax notoginseng callus by using biologi-cally active,wa......
A New Triterpenoid from “Gualou-xiebai-baijiu-tang” Consisting of Fructus trichosanthis and Bulbus a
A new triterpenoid saponin was isolated by bioactivity-guided isolation from 揋ualou-xiebai-baijiu-tang?consisting of Fr......
Recently, Dr. GU Jiang, director of the School of BasicMedical Science of Peking University, and his colleagueshave mad......
In this paper,we propose a novel Intrusion Detection System (IDS) architecture utilizing both the evidence theory and Ro......
Higher production of tumor necrosis factor alpha in hemozoin-fed human adherent monocytes is depende
Objective:To investigate whether the increase of tumor necrosis factor alpha is dependent on lipidic component of malari......
Call for papers on seismo-electromagnetics:Earthquake-related phenomena,laboratory evidences and the
The seismo-electromagnetics,a new terminology in Earth science in 1960’s,has become quite popular now,especially in the......
Preface to the special issue on seismoelectromagnetics:Earthquake-related phenomena,laboratory evide
The earthquake prediction is commonly recognized as one of the most difficult problems in natural science with globaliza......
目的 确证从伊贝母中分离得到一种新的生物碱的结构。方法 IR,MS及 NMR。结果 其结构被鉴定为N- ( 1′,4′-二羟基 - 1′,2′,......
Prunus persica(peach)is an economically important deciduous tree in the Rosaceae family that produces20 million tons of ......
A new iridoid was isolated from the 80% ethanol extract of the whole plant of Incarvillea delavayi.Its structure was def......
A new polyhydroxysteroidal glycoside,(20R,24R)-16-O-(4-O-methyl-2-acetamido-2-deoxy-β-D-galactopyranosyl)-24-ethyl- 5α......
One new triterpenoid saponin,quinquenoside L_(17)(1),was isolated from the leaves and stems of Panax quinquefolium L.,an......
One new monoterpenoid indole alkaloid,11-methoxyburnamine-17-O-3’,4’,5’-trimethoxybenzoate(1),was isolated from Rauvo......
Two new chalcones,β,2′,4′,5′-tetramethoxychalcone 1,andβ,2′,5′-trimethoxyfurano[4″,5″:3′,4′]-chalcone 2 were ......
From the acetone extract of the root of Euphorbia sieboldiana,a new ent-atis-16-ene typediterpenol was isolated and its......
STUDY OF REDOX PROPERTIES OF TETRANUCLEAR DENUM CLUSTER COMPOUND {Mo_4(μ_3-S)(μ_3-O)[S_2P(OEt)_2]_6}
The redox properties of tetranuclear molybdenum cluster {Mo4(μ3-S)3(μ3-O)CS2P(OEt)2D6}(1)have been investigated by li......
Electrophysiological evidences for the contribution of NMDA receptors to the inhibition of clonidine
The main objective of this study is to test the hypothesis that N-methyl-D-aspartate(NMDA) receptors within the rostral ......
The present study investigated the chemical constituents of the roots and rhizomes of Panax notoginseng.Compounds were i......
A new coumarin glycoside was isolated from the ethanol extract of the barks of stem of Daphne giraldii Nitsche. Its stru......
Dear Editor: The recent report on the“Risk assessment on the epidemics of human infection with a novel avian in- fluenz......
Two new bromophenols were isolated from Rhodomela confervoides. Their structrues were elucidated as 2, 2’, 3-tribromo-......
Two new steroidal glycosides were isolated from the Chinese medicinal plantCaryopteris terniflora. The spectroscopic an......
Every day,we experience action events in which we must remember whether we have done something or not.Previous evidences......
Huperzine V, a new Lycopodium alkaloid, was isolated from the whole plant of Huperzia serrata, and the absolute stereoch......
Many evidences show that China has hope of entering WTO in the second half of 2001, which will influence Chinese indust......
A new isochroman-4-one,7,8-dihydroxy-3-methylisochroman-4-one was isolated from water soluble fraction of Musa sapientum......
A pair of diastereoisomeric furostanol saponins was obtained from the n-butanol fraction of methanol extract from Tupist......
From the roots ofPicrorhiza scrophulariiflora,two new secoiridoid glycosides,named picrosecosidcsⅠandⅡ(1,2)have been i......
A new cafferic ester,(+)-2-(1-hydroxyl-4-oxocyclohexyl)ethyl caffeate,was isolated from the 80% ethanol extract of the w......
A new hopane triterpenoid,hopane 22,29-diol-29-formate (1),has been isolated from the whole herbs of Saxiglossum angusti......
A new phenolic compound was isolated from the ethanol extract of the bulbs of Crinum asiaticum L.var.sinicum Baker.Its s......
A new anthraquinone glycoside 1,along with a known anthraquinone glycoside aurantio-obtusin-6-O-β-D-glucopyranoside 2, ......
