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马梅玉 《新疆教育学院学报》2004,20(2):119-121
中国古代汞化物的制备方法很多,本重点讨论与现代汞化物制备方法相似的硫化汞;氧化汞;氯化汞;氯化亚汞的制备方法及化学反应方程式。 相似文献
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从硫化铜矿制取硫酸铜工艺研究 总被引:1,自引:0,他引:1
硫化铜经粉碎,催化焙烧,浸取,铁屑置换制海绵铜,再制取符合GB473-93优等品的硫酸铜产品。 相似文献
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Personal Review: Sources of sulfide in waste streams and current biotechnologies for its removal 总被引:6,自引:0,他引:6
MAHMOOD Qaisar ZHENG Ping CAI Jing HAYAT Yousaf HASSAN Muhammad Jaffar WU Dong-lei HU Bao-lan 《浙江大学学报(A卷英文版)》2007,8(7):1126-1140
Sulfide-containing waste streams are generated by a number of industries. It is emitted into the environment as dis- solved sulfide (S2- and HS-) in wastewaters and as H2S in waste gases. Due to its corrosive nature, biological hydrogen sulfide removal processes are being investigated to overcome the chemical and disposal costs associated with existing chemically based removal processes. The nitrogen and sulfur metabolism interacts at various levels of the wastewater treatment process. Hence, the sulfur cycle offers possibilities to integrate nitrogen removal in the treatment process, which needs to be further optimized by appropriate design of the reactor configuration, optimization of performance parameters, retention of biomass and optimization of biomass growth. The present paper reviews the biotechnological advances to remove sulfides from various environments. 相似文献
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以硫脲作为硫源,在瓦特浴体系中通过电沉积方法获得Ni-S合金电极。阐述了电沉积过程中各工艺条件(硫脲浓度、电流密度、pH值及温度)对镀层中S含量的影响,指出硫脲浓度和电流密度为Ni-S合金镀层中S含量的主要影响因素,并用恒流充放电实验研究了电极的电化学性能。 相似文献
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硫化氢(hydrogen sulfide,H2S)是继一氧化氮(nitric oxide,NO)和一氧化碳(carbon monoxide,CO)之后的第三种气体信号分子,其在体内由特殊的酶倦化产生,有其特殊的代谢过程.其在中枢神经系统中发挥着重要的作用,在生理状态下参与海马长时程增强、神经胶质细胞作用的发挥,通过影响下丘脑-垂体-肾上腺轴而影响神经内分泌过程,参与神经元氧化应激反应和脑血管功能的调节;H2S还参与多种中枢神经系统疾病如阿尔茨海默病、热性惊厥、唐氏综合症、脑缺血、脑缺血再灌注等的病理生理过程.该文就H2S在中枢神经系统的研究概况做了综述. 相似文献
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