Results 91 to 100 of about 79,847 (122)
, 2006 运用电感耦合等离子体质谱(ICP-MS)、X射线荧光光谱(XRF)、带能谱仪的扫描电镜(SEM-EDX)、逐级化学提取(SCEP)和光学显微镜等方法,对贵州大方煤田11号煤层的地球化学和矿物学进行了研究。结果表明,大方煤田11号煤层中有高含量的脉状石英(11.4%)和脉状铁白云石(10.2%),铁白云石周边常被针铁矿所包裹,在脉状石英中发现有热液成因的黄铜矿、闪锌矿和硒方铅矿,此外,还有少量高岭石充填在脉中,这7种矿物常常同脉共存。脉状石英和脉状铁白云石分别来源于硅质和富铁的钙质低温热液流体 ...
李丹, 雒昆利, 任德贻, 代世峰
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[Research progress on calcification mechanism and anti-calcification strategies of vascular grafts]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiSu X, Qiu F, Wang H, Han Q.
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, 1999 某仓砷难选金矿石的工艺矿物学研究表明，金矿物有４２．３％以次显微不可见金包裹于毒砂与黄铁矿中，其余以显微可见金分布于脉石矿物粒间。显微可见金的载体主要是绢云母等硬度较低的脉石矿物，且金的粒度极细，９０．５４％小于１０μｐ。针对其矿石性质，采用泥砂分选，粗砂浮选，细泥氰化提金联合流程，获得了金总回收率９２．０６％的较高指标，其中近４０％可实现就地产金。细泥氰化作业回收率达９６．２８％。获得的金精矿品位为Ａｕ３７．５６ｇ／ｔ，Ａｓ４．５％，Ｓ１７．６９％，金回收率５１．７％。该工艺流程结构简单 ...
苏平, 谷立刚
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[Toxicity of lunar dust simulant exposure via the digestive system: Microbiota dysbiosis and multi-organ injury]. [PDF]
Zhong Nan Da Xue Xue Bao Yi Xue BanChen Y +8 more
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, 2011 对我国某高硅低品位镍磁黄铁矿进行直接酸浸、焙烧--酸浸和细菌浸出比较,并考察硫酸用量及氧化亚铁硫杆菌对浸出率的影响.以稻壳为硫酸盐还原菌固定化载体构建连续上升流固定填充床反应器,以连续上升流方式处理浸出液.结果表明:焙烧使矿物发生烧结,镍被包裹,不利于浸出;细菌浸出Ni2+浸出率为92.16%,质量浓度可达973.22 mg·L-1·T·f.菌在矿物表面形成生物膜,直接与矿物发生作用使矿物溶解,将浸液中Fe2+氧化为Fe3+,Fe3+进一步溶解矿物·
冯雅丽 +3 more
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[Research progress on metal pollutants inducing neurotoxicity through ferroptosis]. [PDF]
Zhejiang Da Xue Xue Bao Yi Xue BanQin Z, Chen Y, Zhao X, Yu S.
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Association of whole blood copper, zinc, calcium, magnesium, and iron with non-alcoholic fatty liver disease in overweight and obese children. [PDF]
Zhong Nan Da Xue Xue Bao Yi Xue BanHuang Z +9 more
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[Association between umbilical cord blood proteome and early infant neurodevelopmental risk]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanMo J, Wang H, Liu J, Li Q, Su T, Ji Y.
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[Advances in Mendelian randomization studies on autism spectrum disorder]. [PDF]
Zhongguo Dang Dai Er Ke Za ZhiHu YY, Tian GC, Liu M, Wang H.
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[Frontier research on smart delivery biomaterials in the field of oral tissue engineering]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiWu Y, Liao J.
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