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There is a big difference between “place” and“landscape”， even though the words are often used interchangeably1. The ......
Global environmental governance was initiated at the 1972 UN Conference on the Environment. The 2012 UN Conference on Su......
I grew up in a small mountain village in central Anhui Province in east China,which was almost isolated from the rest of......
New phenomenon in early development of sporelings in Gracilaria asiatica Chang et Xia(Gracilariaceae
Study on the early development of sporelings from carpospores of Gracilaria asiatica Chang et Xia was conducted indoors ......
<正> Perfluoro-capryl-amido-propyl-triethoxy-silane, CF3 （CF2）6 CONH （CH2）3 Si（OC2H5）3, is a new type of organic fluoro-silieo......
QUANTITATIVE FORMULATION OF THE RULE OF ORIENTATION FOR THE IONIC ADDITION REACTION OF NONCONJUGATIV
<正> A large body of facts has shown that, for the ionic addition reactions of an unsymmetrical reagent onto an unsymmet......
Gold nanoparticles attached NH~(2+) ion implantation-modified indium tin oxide electrode:Characteriz
An NH2+ ion implantation-modified indium tin oxide film was prepared and the implantation of amino groups on the indium ......
Synthesis and Crystal Structure of a New Two-dimensional Manganese Coordination Polymer:[Mn(L)(1,4-b
A new coordination polymer,[Mn(L)(1,4-bdc)] (L=11-fluoro-dipyrido[3,2-a:2,3-c]phenazine,1,4-bdc=benzene-1,4-dicarboxylat......
In order to improve the performance of the Wells turbine for wave energy conversion,the effect of end plates onthe turb......
The Dragon Boat Festival,one of China’s traditions,has a long history and many legends attached to it The Dragon Boat F......
New Solution Method of Pi-Orbital Axis Vector and Its Applications in Fullerenes and Carbon Nanotube
A new solution method to perform the pi-orbital axis vector analysis was developed in this paper. The model of circular ......
Synthesis and Electrochemical Behavior of Electroactive Bistetrathiafulvalene-attached Thiacalix[4]a
Tetrabromoalkylthiacalix[4]arenes(1a and 1b) reacted with excess bis(tetraethylammonium)-bis(1,3- dithiole-2-thione-4,5-......
The effect of cation size(H~+, Li~+, Na~+, and K~+) on McLafferty-type rearrangement of even-electro
Protonation and alkali-metal cation adduction are the most important ionization processes in soft-ionization mass spectr......
Colorimetric detection of glucose using a boronic acid derivative receptor attached to unmodified Au
A simple, cheap and non-enzymatic colorimetric strategy for glucose detection has been designed based on the interaction......
Chemoselective hydrogenolysis of tetrahydrofurfuryl alcohol to 1,5-pentanediol over Ir-MoO_x/SiO_2 c
In this work, MoOx promoted Ir/SiO2 catalysts were prepared and used for the selective hydrogenolysis of tetrahydrofurfu......
Synthesis and antitumor and antibacterial evaluation of fluoroquinolone derivatives(Ⅲ):Mono- and bis
To further explore an efficient modified route for the shift from an antibacterial fluoroquinolone to an antitumor one,m......
Optimal gear shift control strategy for positive independent mechanical split path transmission with
An improvement strategy which controls the shift effort and the power summing planetary gear set of steering clutches an......
Computational Investigation of the Substituent Effect on the Intramolecular Proton Transfer Reaction
The effects of substituent type and position on the proton transfer reaction of 3-hydroxytropolone(3-OHTRN) have been in......
Synthesis, Crystal Structure, Theoretical Studies and Sensitive Response toward Fe~(3+) of a Novel T
A novel pyrazole derivative ligand, BTA(BTA = bis-(4-ethoxy-phenyl)-[4-(tripyrazol-1-yl-methyl)-phenyl]-amine), was synt......
Two series of novel derivatives of imidazo[4,5-b]pyridine were synthesized.These compounds could be used as side chains ......
Simplified aminocoumarin analogues as anticancer agents:Amino isosteric replacement in the noviose m
Simplified aminocoumarin analogues,either noviosylated or simple basic heterocycle attached 3-amido-coumarin compounds,a......
Two novel thieno-[3,4-b]-pyrazine-based molecules,TP-E and TP-O,were designed and synthesized for potential application ......
Tandem intramolecular Diels–Alder/retro-Diels–Alder cycloaddition of 2H-chromen-2-one as dienes with
To study the intramolecular Diels-Alder cycloadditon of 2H-chromen-2-one as a diene,a series of chiral N-allyl-N-benzyla......
With the support by the National Natural Science Foundation of China and the National Basic Research Program of China,an......
A New Luminescent Cd(Ⅱ) Coordination Polymer Constructed by Mixed 1,4-Naphthalenedicarboxylate and N
In this work, we synthesized a new two-dimensional Cd(Ⅱ) coordination polymer, [Cd(1,4-NDC)(L)](1), by using mixed 1,4-......
Crystal Structure and Photoreactive Properties of 1-(2,5-Dimethyl-3-thienyl)-2-[2-methyl-5-(N-(quino
The photochromic title compound,C_(26)H_(18)F_6N_2OS_2,contains a 2,5-dimethylthiophene ring and a N-formyl aminoquinoli......
The specific binding of receptor to ligand covalently attached to surface with different surface densities was studied u......
Design, Synthesis, and Optical/Electronic Properties of a Series of Sphere-Rod Shape Amphiphiles Bas
A series of sphere-rod shape amphiphiles were designed and synthesized by connecting the rod-like oligofluorenes with di......
Synthesis and field emission properties of carbon nanotube films modified with amorphous carbon nano
Amorphous carbon nanoparticles(a-CNPs)on a multi-walled carbon nanotube(MWCNT)film,deposited on a silicon substrate,were......
Protection of criminals’human rights is an important issue that has received full attention at home and abroad. The Com......
Adsorption of poly(L-lysine) on surface-attached poly(methacrylic acid) monolayers formed through in situ free radical p......
SMTA(Surface mount Technology Association)是一个全球性的表面贴装技术协会。SMTA组织一年一次的
SMTA (Surface Mount Techno......
The simplest form of a polymer chain adsorbed on a solid surface is that the polymer chain has only one end group attach......
Synthesis of Dendritic Schiff Base Ligands for Titanium Catalyzed Enantioselective HDA Reaction of D
A new type of dendritic NOBIN derived Schiff base ligands hasbeen synthesized and applied to titanium catalyzed hetero-......
STUDY ON STRUCTURE OF SULFUR-BRIDGED TRANSITION METAL CLUSTERS——CRYSTAL AND MOLECULAR STRUCTURE OF (
The compound (C_5H_7S_2)_3[Mo_3 (μ_3--S)_2 (μ_2--Cl)_3 Cl_6] forms dark black octahedralcrystals with the following c......
Recent studies of the Late Palaeozoic floras of China have brought to light a comparatively great number of Pteridosper......
Along with thriving Sino-African economic and trade ties,Chinese companies have attached greater importance to their soc......
Six ent-kaurene type diterpenoids have been isolated from the leaves of Rabdosia nervosa.Among them, ganervosin A and B......
Studies on Cobalt-Carbon Cluster——Svntnesis of α-Naphthyl α-Thienyl and Substituted-Phonyl Phenylace
12 new diarylacet ylenedicobal t hexacarbonyl complexes were synthesized by complexation reaction of a-naphthyl,a-thien......
一、课文阅读(1)Lathe is a machine tool for holding andturning metal, wood, plastic or other materialagainst a cutting t......
In this paper, we studied in detail the mechanism of 1,2-cycloadditions of the first excited singletoxygen (O_2(~1Δ_g)......
O-Aryl O-ethyl N-isopropyl phosphoramidothioates (Ⅰ) have herbicidal activity. In order to study the relationship betw......
This paper summarized application and research advancement of the microwave-assisted extraction in the agriculture, food......
The authors analyze a piezoelectric energy harvester as an electro-mechanically coupled system.The energy harvester cons......
On the bases of practical investigation, the paper, through synthesizing lots of documents and materials, discusses the......
The collision vibration was widely applied to the collision machining device,since the great and accurate energy is comp......
The collision vibration was widely applied to the impact machining device,since the greatly accurate energy is comparati......
Contemporary Foreign Languages Studies is an international journal of linguistics,applied linguistics, language teaching......
