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20世纪初金敦·沃德对滇藏交界怒族人群的考察述论

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怀化学院学报 2024年第2期43卷 12-18页

作者：李亚锋长江师范学院重庆408100

20世纪初,英国博物学家金敦·沃德数次前往滇藏交界的怒江一带进行旅行和考察,他在收集植物种子的同时,对该地区的民族文化予以较多的关注,尤其是对分布于该地区的怒族人群作了大量的记录和描述,为我们了解20世纪初滇藏交界一带怒族人... 详细信息

20世纪初,英国博物学家金敦·沃德数次前往滇藏交界的怒江一带进行旅行和考察,他在收集植物种子的同时,对该地区的民族文化予以较多的关注,尤其是对分布于该地区的怒族人群作了大量的记录和描述,为我们了解20世纪初滇藏交界一带怒族人的生活样貌提供了重要的资料参考。金敦·沃德根据自己的观察,把地处滇藏交界地区的怒族人群从文化特征上分为“黑”怒族和“白”怒族两个亚群体,这两个怒族的亚群体之间,虽然存在生态环境与文化特征上的巨大差异,但经济上仍保持着紧密联系与互相依赖的关系。从金敦·沃德的考察和记录中,我们能够看到地处滇藏交界地区的怒族在20世纪初的基本生活样貌及其与毗邻民族及内地民族间的交往与交融情况。

关键词：金敦·沃德滇藏交界怒江 “黑”怒族 “白”怒族

Reductive leaching of manganese from low-grade pyrolusite ore in sulfuric acid using pyrolysis-pretreated sawdust as a reductant

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International Journal of Minerals,Metallurgy and Materials 2016年第3期23卷 241-246页

作者： ya-li feng Shi-yuan Zhang Hao-ran li School of Civil and Environmental Engineering University of Science and Technology Beijing National Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences

Manganese （Mn） leaching and recovery from low-grade pyrolusite ore were studied using sulfiaric acid （H2SO4） as a leachant and pyrolysis-pretreated sawdust as a reductant. The effects of the dosage of pyrolysis-pretreated sawdust to pyrolusite ore, the concentration of sulfuric acid, the liquid/solid ratio, the leaching temperature, and the leaching time on manganese and iron leaching efficiencies were inves- tigated. Analysis of manganese and iron leaching efficiencies revealed that a high manganese leaching efficiency was achieved with low iron extraction. The optimal leaching efficiency was determined to be 20wt% pyrolysis-pretreated sawdust and 3.0 mol/L H2SO4 using a liq- uid/solid ratio of 6.0 mL/g for 90min at 90℃. Other low-grade pyrolusite ores were tested, and the results showed that they responded well with manganese leaching efficiencies greater than 98%.

关键词： manganese ore treatment pyrolusite sawdust pyrolysis leaching manganese

Fluidized roasting reduction kinetics of low-grade pyrolusite coupling with pretreatment of stone coal

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International Journal of Minerals,Metallurgy and Materials 2013年第3期20卷 221-227页

作者： ya-li feng Zhen-lei Cai Hao-ran li Zhu-wei Du Xin-wei liu School of Civil and Environmental Engineering University of Science and Technology Beijing State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences

Based on the fluidized roasting reduction technology of low-grade pyrolusite coupling with pretreatment of stone coal, the manganese reduction efficiency was investigated and technical conditions were optimized. It is found that the optimum manganese reduction efficiency can be up to 98.97% under the conditions that the mass ratio of stone coal to pyrolusite is 3：1, the roasting temperature of stone coal is 1000℃, the roasting temperature of pyrolusite is 800℃, and the roasting time is 2 h. Other low-grade pyrolusite ores in China from Guangxi, Hunan, and Guizhou Provinces were tested and all these minerals responded well, giving -99% manganese reduction efficiency. Meanwhile, the reduction kinetic model has been established. It is confirmed that the reduction process is controlled by the interface chemical reaction. The apparent activation energy is 36.397 kJ/mol.

关键词： pyrolusite ore roasting ore reduction fluidized beds kinetics stone coal

Reductive leaching of low-grade manganese ore with pre-processed cornstalk

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International Journal of Minerals,Metallurgy and Materials 2015年第12期22卷 1245-1251页

作者： Ai-fei Yi Meng-ni Wu Peng-wei liu ya-li feng Hao-ran li School of Civil and Environment Engineering University of Science and Technology Beijing State Key Laboratory of High-Efficient Mining and Safety of Metal Mines (Ministry of Education) State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences

Cornstalk is usually directly used as a reductant in reduetive leaching manganese. However, low utilization of cornstalk makes low manganese dissolution ratio, In the research, pretreatment for cornstalk was proposed to improve manganese dissolution ratio. Cornstalk was preprocessed by a heated sulfuric acid solution （1.2 M of sulfuric acid concentration） for 10 min at 80℃. Thereafter, both the pretreated solution and the residue were used as a reductant for manganese leaching. This method not only exhibited superior activity for hydrolyzing cornstalk but also enhanced manganese dissolution. These effects were attributed to an increase in the amount of reductive sugars resulting from lignin hydrolysis. Through acid pretreatment for cornstalk, the manganese dissolution ratio was improved from 50.14% to 83.46%. The present work demonstrates for the first time the effective acid pretreatment of cornstalk to provide a cost-effective reductant for manganese leaching.

关键词： manganese ore treatment cornstalk reductants leaching

肾穿刺活检术后合并腰动脉出血1例并文献复习

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临床肾脏病杂志 2024年第7期24卷 609-613页

作者：原晓丽武凤卿剑波韩慧敏李亚峰山西医科大学第五临床医学院肾内科太原030012 河津市人民医院肾内科运城043300 山西医科大学第五临床医学院中心实验室太原030012

病例资料患者樊某,女,35岁,山西运城人,主因“双下肢水肿2年余,加重2个月余”于2023年8月11日入住河津市人民医院。病史:2年前患者因“双下肢水肿”于2021年5月30日在河津市人民医院肾内科查两次24 h尿蛋白定量:1597 mg、2739 mg,尿红细... 详细信息

病例资料患者樊某,女,35岁,山西运城人,主因“双下肢水肿2年余,加重2个月余”于2023年8月11日入住河津市人民医院。病史:2年前患者因“双下肢水肿”于2021年5月30日在河津市人民医院肾内科查两次24 h尿蛋白定量:1597 mg、2739 mg,尿红细胞31.6个/μL,血清白蛋白31.9 g/L,传染病免疫、免疫球蛋白、补体、抗核抗体谱、抗中性粒细胞胞浆抗体系列均阴性。抗磷脂酶A2受体抗体(antiphospholipase A2 receptor antibody,anti-PLA2R)11450 U/L,阴性。

关键词：特发性膜性肾病肾穿刺活检术腰动脉

The synthesis of porphyrin-anthraquinone dyad via an azo-rearrangement

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Chinese Chemical Letters 2011年第5期22卷 539-542页

作者： Cheng Jie li ya Qing feng Xiu Jun liu Tian Yi Zhang School of Chemical Engineering and Technology Tianjin University Tianjin 300072 China

One novel porphyrin P-Q2 is planned to be synthesized by condensation between ATPP and ***,after separation by chromatography and characterization with IR,~1H NMR,HR-MS and X-ray,P-Q1 is obtained *** the structure of P-Q1 with that of P-Q2,it is realized that an intramolecular cyclization rearrangement takes place when the azo group is situated in the O-position to the amido *** rearrangement offers a new way to prepare indazole *** addition,the spectral properties of P-Q1 have been studied by UV-vis and steady state fluorescence *** fluorescence quenching is observed in the preliminary emission spectrum due to the proposed electron transfer from the excited porphyrin to the anthraquinone moieties.

关键词： Porphyrin Anthraquinone Azo-rearrangement Fluorescence quenching

12-Ring Network Coordination Polymer——{[Cu(C_4N_2H_(10))_4]_2·H_4V_4O_(14)}_n Formed by linking cyclo-[H_4V_4O_(14)]^(4-) with Cu(C_4N_2H_(10))^(2+)_4 Cation Clusters

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Chemical Research in Chinese Universities 2006年第6期22卷 688-691页

作者： li ya-feng ZHANG li-mei WU Lei-lei WANG Sheng-hai WANG Hai-lian SHANG Xuan-xuan College of Chemistry and Molecular Engineering College of Mathematics and Physics Qingdao University of Science ＆ Technology 266042 Qingdao P. R. China

A novel 12-ring network coordination polymer, { [ Cu （ C4 N2 H10 ） 4 ]2 H4 V4 O14 } n （ denoted as QUST-4）, was hydrothermally synthesized and structurally determined by X-ray single-crystal diffraction analysis. QUST-4 was crystallized in a monoelinic system with space group P21/n. The parameters of the unit cell are a = 1. 0497（2） nm, b = 1.6728（3） nm, c=1.2857（3） nm, 3=94. 14（3）°, V=2.2517（8） nm^3, Z=4, Dcal = 1.841 Mg/m^3, R1 = 0. 1071, and wR3 =0. 2703. The largest difference peak and hole were 2284 and - 1040 c/nm^3, respectively. The SBU（ secondary building unit） of QUST-4 was a new cyclo- aggregate of polyoxovanadate cyelo-[ S4V4O14 ]^4 - , different from cyclo-[ V4O12 ]^4-, which was condensed from two tetrahedral and two trigonal bipyramids via ahernate arrangement. Cu（piper） 4 （ piper = piperazine ） group connected the cyclo- [ H4 V4 O14 ] ^4 - anions to form the 12-ring network. The adjacent layers were linked by van der Walls forces.

关键词： Coordination polymer Aggregate of polyoxovanadate Hydrothermal synthesis Network

Synthesis and Characterization of Titanosilicate with the Structure of Umbite

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Chemical Research in Chinese Universities 2002年第4期18卷 380-384页

作者： ZHAO Yong-nan li ya-feng ZOU Yong-chun MAI Zhen-hong PANG Wen-qin Institute of Physics&Center for Condensed Matter Physics Chinese Academy of SciencesBeijing 100080P.R.China Key Laboratory of Inorganic Synthesis and Preparative Chemistry Jinlin UniversityChangchun 130023P.R.China

A zeolitic titanosilicate with the composition of K_2TiSi_3O_9·H_2O, a structural analogue of natural mineral umbite K_2ZrSi_3O_9·H_2O, was hydrothermally synthesized in the SiO_2-TiO_2-K_2O-H_2O system and characterized by means of powder X-ray diffraction, SEM, IR and thermal analysis. The effects of TiO_2/SiO_2 and OH -/SiO_2 ratios on the crystallization of the umbite were discussed. The influence of the organic additives on the morphology of the crystal was also investigated and the crystals with different shapes were obtained.

关键词： Synthesis Titanosilicate Umbite

Recovery of valuable metals from a low-grade nickel ore using an ammonium sulfate roasting-leaching process

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International Journal of Minerals,Metallurgy and Materials 2012年第5期19卷 377-383页

作者： Xin-wei L iu ya-li feng Hao-ran L i Zhi-chao yang Zhen-lei Cai Civil and Environmental Engineering School University of Science and Technology Beijing 100083 China National Key State Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Science Beijing 100190 China

Metal leaching from a low-grade nickel ore was investigated using an ammonium sulfate roasting-water leaching process. The nickel ore was mixed with ammonium sulfate, followed by roasting and finally leaching with water. During the process the effects of the amotmt of ammonium sulfate, roasting temperature, and roasting time on the leaching recovery of metal elements were analyzed. The optimum technological parameters were determined as follows： ammonium sulfate/ore ratio, 0.8 g/g; roasting temperature, 400℃; and roasting time, 2 h. Under the optimum condition the leaching recoveries ofNi, Cu, Fe, and Mg were 83.48%, 76.24%, 56.43%, and 62.15%, respectively. Furthermore, the dissolution kinetics of Ni and Mg from the nickel ore was studied. The apparent activation energies for the leaching reaction of Ni and Mg were 18.782 and 10.038 ***1-1, which were consistent with the values of diffusion control reactions. Therefore, the results demonstrated that the leaching recoveries of Ni and Mg were controlled by diffusion.

关键词： nickel ore treatment ammonium sulfate roasting leaching kinetics diffusion