Results 61 to 70 of about 529,784 (113)

盐胁迫下囊果碱蓬和陆地棉硝态氮低亲和吸收速率的差异及其生理分析/DIFFERENCE BETWEEN SUAEDA PHYSOPHORA AND GOSSYNIUM HIRSUTUM IN LOW AFFINITY ABSORPTION RATE UNDER SALT STRESS AND ITS PHYSIOLOGICAL ANALYSIS[J]

, 2011
采用常规离子耗竭方法,以陆地棉(Gossypium hirsutum L.)为对照,在不同Cl-和NO3 - -N营养状况下,研究了盐生植物囊果碱蓬(Suaeda physophora Pall.)NO3 -低亲和吸收动力学特征,探讨了盐胁迫下囊果碱蓬NO3-高效吸收的调控机制.结果表明:两种植物NO3-的低亲和吸收动力学呈线性吸收,且囊果碱蓬NO3-的净吸收速率和硝酸还原酶的活性显著高于陆地棉,说明囊果碱蓬具有较高的氮需求；10 mmol L-1KNO3预处理2h后 ...
中国科学院研究生院,北京100049, 冯固, 中国农业大学资源与环境学院,北京,100094, Tian Changyan, Ma Haiyan, 原俊凤, 荒漠与绿洲生态国家重点实验室(中国科学院新疆生态与地理研究所),乌鲁木齐,830011, 马海燕, 田长彦, Feng Gu, Yuan Junfeng, 荒漠与绿洲生态国家重点实验室(中国科学院新疆生态与地理研究所),乌鲁木齐830011   +11 more
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[Determination of ergot alkaloids toxins in forage grass by ultra performance liquid chromatography-tandem mass spectrometry coupled with solid-phase supported liquid-liquid extraction]. [PDF]

Se Pu
Ren CX, Wang XM, Sheng WL, Han YZ, Zhang CY, Zheng SZ.   +5 more
europepmc   +1 more source

氰化尾渣中有价元素回收现状与展望

, 2016
氰化尾渣是我国的大宗危险固体废物。这种固体废物含有可回收的有价元素,如铜、铅、锌、金、银、硫、铁等。对氰化尾渣的综合利用既可以回收这些有价元素,实现矿石资源的最大化利用,又可以减少氰化尾渣中残存的药剂对环境的危害。本文从氰化尾渣的性质出发,总结了氰化尾渣的预处理方法,介绍了回收铜铅锌、硫铁、金银的研究现状,并指出现阶段存在的主要问题。针对研究现状和存在的问题,提出新工艺的开发、新药剂的研制、尾矿的再利用等发展方向。氰化尾渣的顺利解决将为社会带来一定经济效益和环境效益。
付国燕, 刘娅, 丁剑, 鲁永刚, 钱鹏, 叶树峰, 吕翠翠   +6 more
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[Simultaneous determination of glycerol， acetic acid， and sodium bisulfite in compound amino acid injection （14AA） using ion exclusion chromatography]. [PDF]

Se Pu
Gu YS, Zuo LM, Gao XL, Shan GZ, Zhao J.
europepmc   +1 more source

[Clinical diagnosis and treatment of four cases of Castleman disease in children]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Wu PQ, Wang HL, Xiong LY, Gong ST, Geng LL.   +4 more
europepmc   +1 more source

[Screening and genetic variation analysis of fatty acid oxidation disorder in neonates in Qingdao City]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Lyu JF, Wang HQ, Wang WQ, Chen YP.
europepmc   +1 more source

碱浸预处理提高某含砷锑难处理金精矿回收率的试验研究

, 2013
内蒙古某黄金矿山金精矿中,金主要包裹在黄铁矿及砷黄铁矿中,同时还有锑金属硫化物的存在。氰化浸出生产工艺中金的回收率比较低,只有76.63%。通过常规氰化工艺条件优化试验,金的回收率最高可达到80.15%。对该低品位含砷、锑难处理金精矿进行碱浸预处理,优先除砷、锑,以提高金氰化浸出率。确定了生产操作的最佳工艺条件,金的氰化回收率由原来的76.63%提高到92 ...
李勇, 徐忠敏, 张治磊, 吕翠翠
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[Determination of eight ultraviolet absorbers in surface water and wastewater by ultra performance liquid chromatography-triple quadrupole mass spectrometry]. [PDF]

Se Pu
Sun HJ, Zhang BB, Huang MQ, Wang H, Hu GJ, Chen HM.   +5 more
europepmc   +1 more source

[Determination of 16 organic ultraviolet absorbers in drinking water by solid phase extraction-ultra-high performance liquid chromatography-tandem mass spectrometry]. [PDF]

Se Pu
Wang Z, Zhao C, Ye BX, Chen YY.
europepmc   +1 more source

[Determination of 65 synthetic cannabinoids in whole blood by QuEChERS-ultra performance liquid chromatography- mass spectrometry]. [PDF]

Se Pu
Xi Z, Ye Y, Li SP, Kang J, Liu WQ, Zhang J, Li DX.   +6 more
europepmc   +1 more source