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Called“case obus”,large huts made of sun dried clay mud stand as undeniable proof of the strength and architectural cr......
<正> According to what has been reported in the literature and our work, by using the method of two phase titration we h......
Leaching of a copper residue, pr0duced by selected oaldation leaching of aItickel matte, in oXygenated sulfUIic acid sol......
炎炎夏日,还有什么比清凉爽口和色彩斑斓的水果更能让人垂涎欲滴!并且不要以为水果就只能当餐间小点心,换个花样,多个步骤,你会发......
Extraction Technology of Total Alkaloids from RADIX ACONITI LATERALIS PREPARATA by the Uniform Desig
[Objective] To screen the optimal extraction technology of total alkaloids from RADIX ACONITI LATERALIS PREPARATA,so as ......
Lithium oxalyldifluoroborate (LiODFB) was synthesized in dimethyl carbonate solvent and purified by the method of solven......
[Objective] To study the effect of dry methods on the content of ligustilide in Miwu. [Methods]The content of ligustilid......
Two new phenylethanoid glycosides,himalosides A(1) and B(2),were isolated from the whole plant of Boschniakia himalaica,......
Two new isospirostanol sapogenins named(25R)-5β-spirostane-(1α,3α)-diol(1) and(25R)-5β-spirostane-(1α,2α,3α,4α)t......
Two new triterpenoids,named as 2 α,3 β,23-trihydroxylurs-12,20(30)-dien-28-oic acid β-D-glucopyranoside(1),and 2 α,3......
Estimation of the rational water area for controlling wind erosion in the dried-up basin of the Ebin
The Ebinur Lake region was described as a “Green Labyrinth” in “Xinjiang Map Records: Records of Rivers” published i......
A Novel Glucose Biosensor Based on Palladium Nanoparticles and Its Application in Detection of Gluco
A novel glucose biosensor was constructed by electrodeposition of highly dispersed palladium (Pd) nanoparticles on a gla......
By the Grignard reaction of 1, 1-di-deutero-1-bromobutane with phthalaldehydic acid 1’,1’-di-deutero-3-n-butyl phthal......
Methyl 9 ethylenedioxpyropheophorbide d was prepared from methyl pyropheophorbide a by protection of cyclic ketone wi......
A new strategy, a post coupling method to develop the polyphosphazene (P2) functionalized with carbazolyl groups and non......
In Lvjiang Village,a small place which faces North Korea across the meandering Yalu River,we can see water-soaked land.A......
[Objective] To investigate the effect of different methods on the extraction of rutin and quercetin in Rosa Laevigata Mi......
1,3-Dialkyl-5-fluorouracil compounds and polymers containing 5-fluorouracil in the main chain were synthesized by the r......
Studies on the structures and syntheses of arteannuin and related compounds——ⅩⅥ.Synthesis of arteann
Arteannuin E was synthesized from methyl β-epoxy arteannuinate by treatment withformic acid followed by hydrolysis and......
Studies on steroidal plant-growth regulator Ⅶ.Synthesis of 2α,3α-dihydroxy-7-oxa-6-oxo-23,24-dinor-B
Two brassinolide analogues,(2)and(3),have been synthesized from hyodeoxycholic acid(4)through a sequence of reactions a......
Perfluoroalkyl iodides 1a-1h reacted with sulfite radical anion(SO_3~-)generated fromthe Ce~(4+)-NaHSO_3 system in wate......
The title compound, C24H20As2(Mr=458.24), crystallizes in mono-clinic with space group P21/n and a=6.268(2), b=7.494(2)......
(Z)-Hexadenes,their epoxides and arylanalogs were prepared s’tereo-specifically by Wittig reaction of alkylidenetriphe......
Woods from Korean Larch, Chinese Fir, Aspens, Manchumian, and Fortunes Paulownia were chosen for investigation. Specime......
The permeability and the structure of heartwood and sapwood of the solvent-exchange dried and the air-dried greenwood o......
Duck fibrinopeptides A and B were purified by Dowex 50 W×2 ion exchange resin and DEAE-Sepharose CL-6B. The complete p......
The total synthesis of isodeoxyarteannuin 3 was achieved starting from norsesquiterpenoid lactone 5 which was obtained ......
Measurement of the longitudinal gas permeability was made for air-dried sapwood specimens from Masson pine (Pinus masson......
In order to further research bamboo cultivation and expand its application field, air-dried density and mechanical prope......
Plantation poplar is one of the most important resources for wood industry, its utilization field is vast. The wettabili......
With the increase of the utilization of bamboo, we must find out more in bamboo properties. According to the national st......
Ion beam sputtering profiling in combination with SIMS technique was employed toinvestigate the Al diffusion in Fe_(78)......
The mechanism of the interfacial reaction of Al_2O_3/medium Mn steel containing Nb was studied bymeans of the observati......
The Dissolving loss of Nd in the systems NdCl_3-MCl_n(M=Li,Na,K,Ca,Sr,Ba;n=1 or 2)and the NdCl_3-rich NdCl_3-LiF motlen......
The phosphors of ABF_4:Eu~(2+)and A_2SiF_6:Eu~(2+)(A=Na,K,Rb,Cs)have been synthesized,and thecrystallographic data obta......
The sorption behavior of benzothiophene on marine sediments treated by different procedures was studied. Linear sorption......
Studies of ultra-drying and accelerated aging on Hippophae rhamnoides seeds from the arid and semiarid areas of northwes......
In order to search for novel fungicides with high activity, a series of heteroaryl pyrazoles were synthesized from 5-py......
Gmeliniin A, a new pentacyclic triterpene of ursane series isolated from the aerial parts of Echinops gmelinii, is eluc......
Aldolase models derived from calix[4]arene were designed and synthesized. The aldol condensation of p-nitrobenzaldehyde ......
A new spirosecokaurenoid, enanderinanin F 1 and its C-6 epimer, angustifolin were isolated from the aerial parts of Isod......
Study on Synthesis of Nanometer SiC Precursors with Sol-Gel of SiO_2-Lignin in the Pulp Black Liquor
In the process of synthesis of nanometer SiC precursors with sol-gel of SiO2 and lignin , the products of all sizes req......
Optimization of reaction variables such as catalyst type and amount, reaction temperature and time, formaldehyde amount,......
Laser-induced breakdown spectroscopy(LIBS)has been applied to the analysis of heavy metals in liquid samples.A new appro......
Concentrations and distribution patterns of rare earth elements(REEs)in the intertidal flat of Tianjin were studied usin......
