现在的社会,越来越凸显城市生活,而汽车、火车、飞机、电视、电脑、手机、网络的创造发明,极大地方便了人们的生活。古人在诸多方面受到约束,这也表现在他们的诗歌里。虽然他们是
1929年于美国爆发的经济危机,对美国甚至是整个世界经济产生了巨大的影响。对于这次经济灾难的产生,笔者认为有一定的历史必然性。本文将从以下几个观点进行阐述。
The econ
Using a simple damped slab model, it was possible to show that a local wind induced 88%(15 of 17) of the near-inertial oscillations (NIO) observed in the mixed
In an attempt to synthesize an indole derivative, methyl 5-nitro-lH-indole-2-carboxylate, an isomeric change of methyl 2-[2-(4-nitrophenyl) hydrazono] propanoat
A new cyanide-bridged bimetallic assembly [Mn(3-meosalpn)(H2O)]2[Fe(CN)5NO](1) was obtained by the reaction of [Fe(CN)5NO]2- with [Mn(3-meosalpn)]+, and charact
TiO2 colloid was prepared by the sol-gel method and was bladed on transparent conduction glass to made nanoporous electrode.The impedance performance of TiO2 el
The title compound formulated as Cu2(C13H11N6OF2)(N3)3CH3OH was synthesized and structurally characterized by elemental analysis, IR and single-crystal X-ray di
The possibility of direct analytical applications of ferrate (Ⅵ) solution,which was freshly electrogenerated in low-concentration NaOH electrolyte,was studied
One-step method for the synthesis of secondary aliphatic amine substituted nitrobenzaldehyde was developed.In the presence of Pd catalyst,halogenated nitrobenza
Eudistalbin A was isolated from marine tunicate eudistoma album and possess cytotoxic activity (ED503.2μg/mL) in vitro against the growth of KB human buccal ca