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Concentrating Ge in zinc hydrometallurgical process with hot acid leaching-halotrichite method
Springer Science and Business Media LLC - Tập 10 - Trang 307-312 - 2003
In recovering Ge and Ag from the calcine and fume dusts mixture of Huidong Lead-zinc Mine, the flow sheet of hot acid leaching-halotrichite method mainly consists of neutral leaching, low-acid leaching, high acid leaching and jarosite precipitation. In the ten circulation periods, the technology flow sheet was carried out smoothly. The loss of Ge in halotrichite residue is less than 5.0%, when iro...... hiện toàn bộ
Displacement of polymer solution on residual oil trapped in dead ends
Springer Science and Business Media LLC - Tập 15 - Trang 84-87 - 2010
For waterflooding reservoir, oil trapped in pore’s dead ends is hardly flushed out, and usually becomes one typical type of residual oil. The microscopic displacement characteristics of polymer solution with varied viscoelastic property were studied by numerical and experimental method. According to main pore structure characteristics and rheological property of polymer solution through porous med...... hiện toàn bộ
Microscopic phase-field simulation of Cr atom substitution character during formation of Ll2 and DO22 phases in Ni-Cr-Al alloy
Springer Science and Business Media LLC - Tập 15 - Trang 588-592 - 2008
The simulations of Cr atom substitution character during the formation of Ll2 and DO22 phases in Ni-Cr-Al alloy were performed at 873 K based on microscopic phase-field model. It is found that the substitution of Cr is affected by Cr and Al contents and limits of occupation probabilities of Cr atom in Ll2 phase are present. The precipitate is single Ll2 phase when the component is less than the li...... hiện toàn bộ
Evaluation of effective elastic constants for polycrystalline PZT thin films by XRD patterns and pole figures
Springer Science and Business Media LLC - Tập 14 - Trang 130-133 - 2007
Polycrystalline PbZr0.52Ti0.48O3 (PZT) thin films with different thicknesses were prepared by metal-organic decomposition (MOD) at different thermal decomposition temperatures, and their effective elastic constants were evaluated with X-ray diffraction (XRD) techniques. The relative intensities of textures in the thin films were analyzed from XRD patterns, and the effective elastic constants were ...... hiện toàn bộ
Ảnh hưởng của đa hình thái CYP3A5 đối với nồng độ tacrolimus trong máu ở bệnh nhân ghép thận Dịch bởi AI
Springer Science and Business Media LLC - Tập 12 - Trang 310-312 - 2005
Mục tiêu Tacrolimus là một thuốc ức chế miễn dịch có khoảng trị liệu hẹp và có sự biến động lớn theo từng cá thể trong dược động học của nó. Tacrolimus là một chất nền của cytochrome P450 (CYP) 3A5. Mục tiêu nghiên cứu này là đánh giá xem đa hình A6986G có liên quan đến tỷ lệ nồng độ / liều tacrolimus hay không. Phương pháp Năm mươi hai bệnh nhân ghép thận người Trung Quốc đã được tham gia vào ngh...... hiện toàn bộ
#tacrolimus #CYP3A5 #đa hình gen #ghép thận #dược động học
Study on the separation of Co2+ from Zn2+, Cd2+ by anion-exchange chromatography
Springer Science and Business Media LLC - Tập 7 - Trang 88-91 - 2000
The separation of Co2+ from Zn2+, Cd2+ by anion-exchange chromatography was discussed. The chromatographic column containing anion resin 201 × 7 which was saturated with a solution of ammonium chloride. The effects of the eluant acidity and eluant composition on the separation were investigated. The results indicate that this anion-exchange chromatography is suitable to the separation of Co2+ from...... hiện toàn bộ
Property and metallogenic characteristics of alkali-rich porphyry in western margin of Yangtze Platform
Springer Science and Business Media LLC - Tập 5 - Trang 130-133 - 1998
The age of alkali-rich porphyries in the western margin of Yangtze Platform is 30–50 Ma; the minerals mainly are orthoclase, quartz, plagioclase; the chemical composition is alkali-rich [(K2O+Na2O)>8%], highpotash[(K2O+Na2O)=5.09%−8.30%]; the content of ΣREE is relatively low, LREE is concentrated, without anomaly of europium; the average initial ratio of 87Sr/86Sr is 0.7073; the value of δ34S sim...... hiện toàn bộ
Investigations and practices on green manufacturing in machining systems
Springer Science and Business Media LLC - Tập 12 - Trang 18-24 - 2005
A machining system is a typical manufacturing system. A green manufacturing function framework of machining systems is structured to describe the traits of input, output and control elements in the system. Based on the function framework, the green manufacturing problem framework of machining systems is presented. The green manufacturing problems in machining systems are classified into three clas...... hiện toàn bộ
Removal of Pb2+ and Cd2+ by adsorption on clay-solidified grouting curtain for waste landfills
Springer Science and Business Media LLC - Tập 13 - Trang 166-170 - 2006
Pb2+ and Cd2+ in leachate were adsorbed on clay-solidified grouting curtain for waste landfills with equilibrium experiment. The cation exchange capacity was determined with ammonium acetate. And the concentration of heavy metal cations in leachate was determined with atomic absorption spectrophotometer. Their equilibrium isotherms were measured, and the experimental isotherm data were analyzed by...... hiện toàn bộ
Effect of carboxymethylcellulose and xanthan gum on rheological profile of dried maize masa
Springer Science and Business Media LLC - Tập 14 - Trang 514-517 - 2007
Maize masa was obtained using a traditional nixtamalisation process, and then freeze-dried to obtain dried masa. Both masa dispersions with 10%(w/V) total solids control (DM), masa dispersions mixed with carboxymethylcellulose (CMC) and xanthan gum (0.2% and 0.5%(mass fraction) gum solids) named masa with hydrocolloid (DMH) were prepared by distilled water, and the rheological properties were test...... hiện toàn bộ
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