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The study of laws， regulations and policies for Taiwanese in entrepreneurship and employment in Guan
【Abstract】According to the new trend of regional development， from the perspective of encouraging Taiwanese to start th......
一、单项填空（共15小题；每小题1分，满分15分） 1. They got up very early that morning they wouldnt miss the first bus. A. i......
【Abstract】This paper proposes the word order of the noun phrases in Qinzhou Zhuang and presents the c-/f-structures of......
Apatite Fission-Track Datings on Hercynian Granites from Rehamna and Jebilet Massifs(Western Meseta,
This work is based on apatite fission-track analysis of samples(mostly granites)from the basement of the Cretaceous-Tert......
SHRIMP U-Pb zircon dating gives ages of 260.6 ± 3.5 Ma and 260.7 ± 5.6 Ma for serpentinised wehrlite and plag-hornblen......
Distribution characteristics of heavy metals in surface sediments and core sediments of the Shenzhen
The concentration of zinc,chromium,cadmium,nickel,lead and copper was measured on both surface sediments and core sedime......
Let X be a set of v elements (v≥3). A transitive triple from X is a collection of three ordered pairs (x, y), (y, z)and......
<正> The radiation-induced solid state polymerization of formaldehyde and acetaldehyde belongs to the explosive type of ......
THE MEASUREMENT OF EXCESS CARRIERS’ LIFETIME IN SEMICONDUCTORS BY PHOTOCONDUCTIVE PHASE SHIFT OF THE
<正> Up to date, there are nearly 30 methods for measuring the excess carriers’ lifetime in semiconductors. They are in......
<正> A thorough investigation on the constitution of Mn-Ga alloys has been made by means of X-rays incorporated with dif......
<正> Annulenes are monocyclic conjugated polyenes with alternating single and double bonds. The π-electron current, cop......
<正> In 1980, we found a metallic mineral in a Cu-Ni deposit in Xinjiang. After X-ray powder study and microprobe analys......
一些同学常对下面这道题感到困惑;____is the best singer in your class?A.Whom do you think B.Who do you thinkC.Do you thin......
Coordination compounds of lanthanide trichloroacetates with 1,10-phenanthroline weresynthesized and characterized as Ln......
This colored burial figu rine was unearthed from a tomb in Yanshi City, Henan Province and dates back to Tang Dynasty (......
Synthesis, Crystal Structure, and Antitumor Activity of 1-(4-Methoxybenzylidene)-2-(1-phenyl-6-trifl
The novel title compound 1-(4-methoxybenzylidene)-2-(1-phenyl-6-trifluoromethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)hydrazi......
Synthesis and Characterization of 8-Chloro-7-(4-(3-chloropropanoyl)piperazin-1-yl)-1-cyclopropyl-6-f
A new compound 8-chloro-7-(4-(3-chloropropanoyl)piperazin-1-yl)-1-cyclopropyl-6-fluoro-4-oxo-1,4-dihydroquinoline-3-carb......
The title complexes based on 4(3H)-quinazolinone ligand have been synthesized and characterized by elemental analysis, I......
Synthesis,Crystal Structure and Properties of a Novel Decavanadate Complex with One-dimensional Chai
By using a flexible multidentate ligand,bis(2-hydroxyethyl)iminotris(hydroxyhydroxylmethy)methane(’bis-tris’:H5L),the ......
A new skeleton bisabolane-type sesquiterpene curcuminoid,bisabocurcumin(1),along with 5 known compounds,curcumin(2), dem......
Two polymorphic forms (forms I and IV) of antidepressant bupropion hydrobro- mides were prepared and characterized by po......
Synthesis, Crystal Structure and Antitumor Activity of 6,7,8-Trimethoxy-1-(4-methoxy-3-nitrophenyl)-
A novel class of 3,4-dihydroisoquinolines (7a～e) was designed, synthesized and characterized by IR, NMR and ESI-MS. The c......
Solvothermal reaction of lanthanide(Ⅲ) salts with fluorescein (2-(6-hydroxy3-oxo-3H-xanthen-9-yl)benzoic acid) led to a......
A new tri-nuclear mixed metal thiolate complex [Ag(PPh3)2]2[Ni(edtO2)2] 1 has been synthesized and structurally characte......
The title compound N-(2,6-difluorobenzoyl)-N’-[5-(4-trifluoromethylphenyl)-1,3,4-thiadiazol-2-yl]urea(C17H9F5N4O2S,Mr =......
A novel coordination complex [Zn(bipy)2(H2O)4]·L·3H2O (1, bipy = 4,4’-bipyridine, LHNa = aniline-2,5-disulfonic acid ......
A novel polyoxometalate {[AgI(4,4’-bipy)]3[PW12O40]}·(4,4’-bipy)·4H2O 1 has been synthesized hydrothermally and char......
The title complex,6,6-(3,3,5,5-tetra-tert-butylbiphenyl-2,2-diyl)bis(oxy)di-di-benzo[d,f]-[1,3,2] dioxaphosphepine(C52H5......
Synthesis, Crystal Structure and Luminescence Property of a 2D Mn(Ⅱ) Coordination Polymer Based on I
A novel 2D Mn(Ⅱ) coordination polymer [Mn(CH3COO)2(INH)]n(INH=isoniazid) has been synthesized in DMF solution with ison......
Synthesis,Crystal Structure and Electrochemical Property of a Dinuclear Manganese(Ⅱ) Complex [Mn_2(C
One dinuclear manganese(II)complex [Mn2(C12H8N2)4(C8H5O4)2](C8H4O4)·H2O has been synthesized with o-phthalic acid and 1......
Synthesis,Crystal Structure and Anti-tumor Activity of Ethyl 3-(4-methoxyphenyl)-4-oxo-3,3a,4,6-tetr
The title compound(ethyl 3-(4-methoxyphenyl)-4-oxo-3,3a,4,6-tetrahydro-1H-furo[3,4-c]pyran-3a-carboxylate) has been synt......
Synthesis,Bioactivity and Crystal Structure Analysis of Diisopropyl[(4-cyanopyrazol-3-ylamino)(2-hyd
The title compound,diisopropyl[(4-cyanopyrazol-3-ylamino)(2-hydroxylphenyl) -methyl] phosphonate was synthesized by the ......
The hydrolysis reaction of azoxystrobin in a methanol solution was studied, obtaining a novel compound 3,3-dimethoxy-2-(......
The title compound 2-oxo-3-phenyl-1-oxaspiro[4.5]dec-3-en-4-yl 4-chloro-benzoate 6 (C22H19ClO4, Mr = 382.82) has been sy......
Anti-tumor Metastasis and Crystal Structure of N~1-(1,3,4-Thiadiazole-2-yl)-N~3-m-chlorobenzoyl-urea
The title compound N 1-(1,3,4-thiadiazole-2-yl)-N 3-m-chlorobenzoyl-urea (C 9 H 7 N 4 OSCl,M r=254.70) was prepared by t......
A novel coordination polymer, [Cd2Cl4(bpme)]n·n(H2O) (1, bpme=2,5-bis(be-nzoimidazol-2-yl)pyrazine), has been synthesiz......
Synthesis, Crystal Structure, and Biological Activity of N-((1-cyclohexyl-1H-tetrazol-5-yl)(5-methyl
The title compound N-((1-cyclohexyl-1H-tetrazol-5-yl)(5-methyl-1,2,3-thiadiazol-4-yl) methyl)-4-nitrobenzenamine (C17H20......
A Cu(II) complex of tetra(3,5-diphenyl pyrazole) [Cu(C15H12N2)2Cl2]2 (1) was synthesized, and its structure was determin......
Synthesis,Structure and Physical Properties of Mn and Cd Complexes with 1,1,2,2-Tetracarboxyl-ethyle
Complex [Mn(tce) 0.5(H2O) 4](1) was obtained from Mn(OAc) 2 and tce,where tce is 1,1,2,2-tetracarboxyl-ethane. The struc......
Synthesis,Crystal Structure and Biological Activity of N-tert-butyl-N-(4-methyl-1,2,3-thiadiazole)-5
The title compound N-tert-butyl-N-(4-methyl-1,2,3-thiadiazole)-5-yl-N’-(4-me-thyl-1,2,3-thiadiazole)-5-formyl-N’-3,5-d......
An aminophenol ligand, N,N,N′-tri(2-hydroxy-5-methylbenzyl)-1,2-ethanediamine, was prepared through the Mannich reactio......
Synthesis,Crystal Structure,and Biological Activity of Naphthalen-2-yl4-methyl-1,2,3-thiadiazole-5-c
The title compound naphthalen-2-yl-4-methyl-1,2,3-thiadiazole-5-carboxylate (C 14 H 10 N 2 O 2 S,M r=270.31) was synthes......
The title compound 4-oxo-1,2,4-triazino[4,5-a]benzimidazole(C9H6N4O,Mr = 186.18) has been synthesized and structurally c......
Synthesis, Crystal Structure and Luminescent Property of the One-dimensional Chain Chlorodibenzyltin
A one-dimensional chain chlorodibenzyltin 2-quininate has been synthesized and characterized by IR, NMR spectra and elem......
Novel sulfur-containing compounds(3a–3c, 4a–4c) were obtained in ethanol with 1,3-diphenyl-2-propanone as the starting......
Synthesis, Structure and Norbornene Polymerization Catalyzed by Palladium Complex Bearing the 1,3-Di
The title complex 1,3-diphenyl-2-((quinolin-8-ylamino)methylene)propane-1,3-dione-palladium was synthesized by the react......
Synthesis and Crystal Structure of Novel Mixed-metal Alkoxide Clusters of Ytterbium and Sodium: Yb_4
The mixed-metal cluster Yb4O4(OiPr)16Na12 has been synthesized and structurally determined by IR, elemental analysis, an......
Syntheses, Crystal Structures and Thermal Stability of Two Complexes of La(Ⅲ)/Ce(Ⅲ) Assembled by H_2
Two 2D layer complexes {[La(TBTA)1.5(phen)2H2O]·3H2O}n (1) and {[Ce(TBTA)1.5(phen)2H2O]·3H2O}n (2) (H2TBTA = 2,3,5,6-t......
Synthesis and Characterization of a Sb(Ⅲ) Complex with α-Diimine Ligand and a C_(sp3)-C_(sp3) Coupli
A Csp3-Csp3 coupling production of the original ligand molecule [(CMeN(2,6-iPr2C6H3))2]2 (1) and an antimony ionic compo......
