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闪锌矿常压酸浸制取硫酸锌除铁工艺研究 被引量:3
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作者 LIU Jun-feng DENG Wen-yan +3 位作者 LIU Sheng-zi 刘俊峰 邓文艳 刘胜姿 《矿冶工程》 EI CAS CSCD 北大核心 2001年第1期53-55,共3页
研究了闪锌矿常压酸浸制取硫酸锌的除铁工艺 ,实验结果表明 ,闪锌矿酸浸液经过滤 ,调节溶液pH值为 1 5~ 2 0 ,控制温度在 90℃以上 ,加入NH+4以及少量活性炭 ,同时通氧气 ,反应 4h ,通过生成黄钾铁矾可以初步除去溶液中的铁 ;过滤分... 研究了闪锌矿常压酸浸制取硫酸锌的除铁工艺 ,实验结果表明 ,闪锌矿酸浸液经过滤 ,调节溶液pH值为 1 5~ 2 0 ,控制温度在 90℃以上 ,加入NH+4以及少量活性炭 ,同时通氧气 ,反应 4h ,通过生成黄钾铁矾可以初步除去溶液中的铁 ;过滤分离黄钾铁矾 ,控制溶液温度为 80~ 85℃ ,pH值为 4,再加双氧水溶液深度氧化除铁 ,氧化 4h ,除铁率大于 99% ,溶液中最终铁离子浓度低于 0 0 1g L。 展开更多
关键词 闪锌矿 硫酸锌 黄钾铁矾 双氧水 除铁 常压酸浸
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Neuroprotective effect of epigallocatechin-3-gallate on hemisection-induced spinal cord injury in rats 被引量:4
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作者 Fengjun Deng Rubing Li +3 位作者 Yingbao Yang Dan Zhou Qian Wang Jiangping Xu 《Neural Regeneration Research》 SCIE CAS CSCD 2011年第6期405-411,共7页
Epigallocatechin-3-gallate (EGCG), a naturally occurring compound in green tea, has been widely used as an antioxidant agent. In the present study, model rats with acute spinal cord injury were intraperitoneally inj... Epigallocatechin-3-gallate (EGCG), a naturally occurring compound in green tea, has been widely used as an antioxidant agent. In the present study, model rats with acute spinal cord injury were intraperitoneally injected with 25, 50, and 100 mg/kg EGCG, and spinal cord ultrastructure, oxidative stress reaction, inflammatory factors, and apoptosis-associated gene expression were observed. Results showed that EGCG attenuated neuronal and axonal injury 24 hours post injury. It also decreased serum intedeukin-113, tumor necrosis factor-a, and intercellular adhesion molecule-1 release, and decreased apoptosis-associated gene expression. Furthermore, it increased the level of the superoxide anion (O2-), superoxide dismutase, and B-cell lymphoma/leukemia-2, and reduced malondialdehyde levels. Furthermore, it reduced the expression of the pro-apoptotic protein Bax. Noticeably, EGCG at the 100 mg/kg dosage exhibited similar effects as methylprednisolone sodium succinate, which has been frequently used for clinical acute spinal cord injury. The results demonstrated that EGCG can significantly inhibit inflammation, suppress oxidation, and reduce apoptosis in acute spinal cord injury. 展开更多
关键词 epigallocatechin-3-gallate spinal cord injury neuroprotective effect oxidative stress INFLAMMATION apoptosis
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The Distribution and Morphological Diversity of GABA-containing Neurons in The Prefrontal Cortex of Human Newborn Baby Infant
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作者 Zheng Deshu Gai Weiping 《解剖学报》 CAS 1987年第4期348-348,共1页
The prefrontal cortex of a human full termnewborn infant just after accidental death was studies by mcans of immunocytochemical technique with antibody directedagainst GABA(Immunonuclear Corp.)and ABC kit(Vector)。GAB... The prefrontal cortex of a human full termnewborn infant just after accidental death was studies by mcans of immunocytochemical technique with antibody directedagainst GABA(Immunonuclear Corp.)and ABC kit(Vector)。GABA-containing neurons were found over all layers and all were nonpyramidal cells.The laminar distribution of GABA-containing ne-urons was not even between different layers,density in laye Ⅱ was prominently higher than any other layers,density in layer Ⅲ and layer Ⅳ was higher than that in layer V and Ⅵ. 展开更多
关键词 GABA The Distribution and Morphological Diversity of GABA-containing Neurons in The Prefrontal Cortex of Human Newborn Baby Infant
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Study on bone morphology and development of children based on digital three dimensional reconstruction
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作者 Mi Sirong Xie Liang +11 位作者 Hu Luying Zhang Feng He Wenyan Liu Guangxing Zhang Zhenwu Yu Huan Zhan Meizhi Liu Yating Sheng Ting Peng Wen Liu Qiangsheng Rao Libing 《解剖学杂志》 CAS 2021年第S01期241-241,共1页
This study aims to construct the skeletal system of children at different ages through digital modeling techniques,explore the law of morphological development of childen's skeletal system,so as to provide a refer... This study aims to construct the skeletal system of children at different ages through digital modeling techniques,explore the law of morphological development of childen's skeletal system,so as to provide a reference for the study of children's bone development and digital anatomy.In this study,12 normal boys were selected from 6 age stages(0-6 months,6-12 months,1-3 years old,3-5 years old,5-7 years old,7-10 years old).All patients underwent CT plain scan with a slice thickness of 0.625 mm.The collected CT data was imported into Mimics 19.0 software for three dimensional reconstruction of children's whole body bones.3D printing of children's bone model was used to construct children's bone system.T wo dissected bone specimens were randomly selected and compared with 3D printed models for specific bony landmarks to verify the accuracy of modeling. 展开更多
关键词 ANATOMY CHILDREN PRINTING
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Quantitative analysis of the difference of lesion degree between male and female COVID-19 based on digital modeling
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作者 Yu Huan Liu Guangxing +9 位作者 Zhan Meizhi Zhang Zhenwu Sheng Ting Liu Yating Mi Sirong Xie Liang Zhang Feng Hu Luying He Wenyan Rao Libing 《解剖学杂志》 CAS 2021年第S01期241-241,共1页
The purpose of this study is to research the difference of lesion volume and its constituent ratio of lung volume of Novel Coronavirus Pneumonia(NCP)between male and female by digital technology.In this study,the CT i... The purpose of this study is to research the difference of lesion volume and its constituent ratio of lung volume of Novel Coronavirus Pneumonia(NCP)between male and female by digital technology.In this study,the CT imaging data and clinical data of 40 NCP patients in Huaihua were collected and divided into two groups:male(n=22)and female(n=18)according to gender. 展开更多
关键词 FEMALE technology. LUNG
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A NEW HOME-MADE FLUORESCENT RETROGRADE NEURONAL TRACER——TITAN YELLOW
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作者 苏鸿森 《Chinese Science Bulletin》 SCIE EI CAS 1985年第5期709-710,共2页
A number of fluorescent retrograde neuronal tracers have been introduced recently. However, they all have some shortcomings. We have found that a home-made anion fluorescent dye, Titan Yellow (TY; CP; Ting Xiu, Shangh... A number of fluorescent retrograde neuronal tracers have been introduced recently. However, they all have some shortcomings. We have found that a home-made anion fluorescent dye, Titan Yellow (TY; CP; Ting Xiu, Shanghai), was transported retrogradely through axons to their parent cell bodies, with neither migration out of labeled neurons nor tissue damage. Twenty-seven adults albino rats were used in this study. 展开更多
关键词 migration RETROGRADE TITAN SHORTCOMINGS NEURONAL PARENT TITAN YELLOW labeled YELLOW transported
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Le^a-LIKE SUBSTANCES SCREENED IN 120 KINDS OF HERBS
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作者 汪秀明 叶雨文 +2 位作者 钟慧平 杨晓慧 M.S.PARK 《Chinese Science Bulletin》 SCIE EI CAS 1985年第9期1262-1265,共4页
It has been reported that substances cross-reactive with ABH(O) or Lewis blood group antigens have been detected in plants, microbes, animals and parasites. Substances cross-reactive with ABH(O)blood group or bacteria... It has been reported that substances cross-reactive with ABH(O) or Lewis blood group antigens have been detected in plants, microbes, animals and parasites. Substances cross-reactive with ABH(O)blood group or bacterial antigens have also been detected in Chinese medicinal herbs; in 2 kinds of herbs, namely, Leonurus sibiricus L. and Carthamus tinctorius L., Le^a-like substances cross-reactive with 展开更多
关键词 CARTHAMUS Leonurus microbes HERBAL MEDICINAL EXTRACTS filtered mostly FLOWER filtration
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EFFECTS OF ZHISHI AND ITS ACTIVE PRINCIPLES——SYNEPHRINE AND N-METHYLTYRAMINE ON THE CONTRACTILITY AND AUTOMATICITY OF CAT PAPILLARY MUSCLE
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作者 贾宏钧 冯清泉 郭兆贵 《Chinese Science Bulletin》 SCIE EI CAS 1980年第7期616-620,共5页
Injectio Zhishi (枳实) as an extraction from Zhishi (Citrus Aurantium L.) has proved of its marked pressor and cardiac inotropic effects. Its active principles as isolated were identified as synephrine and N-methy... Injectio Zhishi (枳实) as an extraction from Zhishi (Citrus Aurantium L.) has proved of its marked pressor and cardiac inotropic effects. Its active principles as isolated were identified as synephrine and N-methyltyramine, the former acting directly on the adrenergic receptors while the latter indirectly by releasing catecholamine in the body(1,2)Its effectiveness and obvious advantages in the treatment of shock of various etiology have been proved by clinical applications(3,4)But according to experimental observations, with large dosages it occasionally causes arrhythmia such 展开更多
关键词 OCCASIONALLY ADRENERGIC arrhythmia Citrus pressor latter MARKED indirectly releasing stimulation
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