The facile chemical synthesis of silver sulphide nanocrystals from metal-loaded organic media, containing a silver-selective organophosphorous ligand as extract
It is reported the influence of the interstitial atoms doping on the FeSe superconductor. Polycrystalline samples with FeSeFx and FeSeBx nominal compositions we
关于商业模式创新动力的研究,众学者也从技术推动（Timmers,1998;Amit,Zott,2001）、需求拉动（Teece,2010）[1]、竞争逼迫（Venkatraman,Henderson,2008）、企业高管（Linder,Cantrell,200
Magnetic pulse welding process, one of high speed welding processes, uses electromagnetic force from discharged current through a working coil which develops a
The low-temperature sintered NiZn and NiCuZn ferrites with the composition of Ni0.40Zn0.60Fe2O4 and Ni0.35Cu0.05Zn0.60 Fe2O4 were respectively synthesized by th
To develop an improved method of reusing poly(ethylene terephthalate) (PET) waste in the production chain, it was chemically modified with pentaerythritol (PENT
1060年入京任三司度支判官的王安石向宋仁宗上《万言书》，倡言“改易更革”、变法图强。其中心内容即“因天下之力，以生天下之财。取天下之财，以供天下之费”，纾解国库空虚、财政拮据的危局。同时，王安石多年在地方为官，对贫苦农民抱有怜悯之心，也想变法惠民、以利百姓。他曾赋诗《兼并》言志： 三代子百姓，公私无异财。人主擅操柄，如天持斗魁。 赋予皆自我，兼并乃奸回。奸回法有诛，势亦无自来。 后世始倒持
社会阶层固化必然会对党的群众基础带来严峻的挑战。巩固党的群众基础、建立公平合理的阶层流动机制,需要在政府层面建立公平的阶层流动制度,在社会层面顺畅各阶层表达意见的
A partial substitution of Ni by Cu has been carried out in order to improve the hydrogen storage characteristics of the Mg2Ni-type alloys. The nanocrystalline M
For water and sewer pipes, PVC is considered to be one of the best row materials. Due to its physical, chemical and industrial significant properties, PVC is co