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Agglomeration and leaching behaviors of copper oxides with different chemical binders

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International Journal of Minerals,Metallurgy and Materials 2021年第7期28卷 1127-1134页

作者： Sheng-hua Yin lei-ming wang Xun Chen Ai-xiang Wu Key Laboratory of the Ministry of Education of China for High-Efficient Mining and Safety of Metal Mines University of Science and Technology BeijingBeijing 100083China School of Civil and Resource Engineering University of Science and Technology BeijingBeijing 100083China Department of Materials Engineering University of British Columbia309-6350 Stores RoadVancouverBC V6T 1Z4Canada

The chemical binder is one of the critical factors affecting ore agglomeration behavior and leaching *** this study,we in-vestigated the effect of the type of binder and mass fraction of the H_(2)SO_(4)solution used on the curing,soaking,and leaching behavior of *** results revealed that Portland cement(3CaO·SiO_(2),2CaO·SiO_(2),and 3CaO·Al_(2)O_(3))was the optimal binder for obtaining a well-shaped,stable agglomeration structure.A higher extraction rate was achieved when using Portland cement than that obtained using sodi-um silicate,gypsum,or acid-proof *** excessive geometric mean size is not conducive to obtaining well-shaped agglomerations and desirable *** computed tomography(CT)and MATLAB,the porosity of two-dimensional CT images in sample concentrations L1-L3 was observed to increase at least 4.5vol%after acid *** agglomerations began to be heavily destroyed and even to disinteg-rate when the sulfuric acid solution concentration was higher than 30 g/L,which was caused by the excessive accumulation of reaction products and residuals.

关键词： agglomeration binder acid leaching copper oxide sulfuric acid solution

Research progress in enhanced bioleaching of copper sulfides under the intervention of microbial communities

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International Journal of Minerals,Metallurgy and Materials 2019年第11期26卷 1337-1350页

作者： Sheng-hua Yin lei-ming wang Ai-xiang Wu Xun Chen Rong-fu Yan Key Laboratory of the Ministry of Education of China for High-Efficient Mining and Safety of Metal Mines University of Science and Technology BeijingBeijing 100083China School of Civil and Resource Engineering University of Science and Technology BeijingBeijing 100083China Department of Materials Engineering University of British ColumbiaVancouver V6T 1Z4Canada

Compared with the traditional pyrometallurgical process, copper bioleaching has distinctive advantages of high efficiency and lower cost, enabling efficiently extracts of valuable metal resources from copper sulfides. Moreover, during long-term industrial applications of bioleaching, many regulatory enhancements and technological methods are used to accelerate the interfacial reactions. With advances in microbial genetic and sequencing technologies, bacterial communities and their mechanisms in bioleaching systems have been revealed gradually. The bacterial proliferation and dissolution of sulfide ores by a bacterial community depends on the pH, temperature, oxygen, reaction product regulation, additives, and passivation substances, among other factors. The internal relationship among the influencing factors and the succession of microorganism diversity are discussed and reviewed in this paper. This paper is intended to provide a good reference for studies related to enhanced bioleaching.

关键词： bioleaching copper sulfide heap leaching microbial community succession enhanced mechanism

Branched fibrous amidoxime adsorbent with ultrafast adsorption rate and high amidoxime utilization for uranium extraction from seawater

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Nuclear Science and Techniques 2023年第6期34卷 79-90页

作者： Wan-Ning Ren Xin-Xin Feng Yu-Long He ming-lei wang Wan-Feng Hong Hong-Wei Han Jiang-Tao Hu Guo-Zhong Wu School of Physical Science and Technology ShanghaiTech UniversityShanghai200031China Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai201800China University of Chinese Academy of Sciences Beijing100049China College of Science University of Shanghai for Science and TechnologyShanghai200093China College of Science Shanghai UniversityShanghai200444China

Direct collection of uranium from low uranium systems via adsorption remains *** sorbent materials with amidoxime(AO)groups are promising adsorbents for uranium extraction from ***,low AO adsorption group utilization remains an *** herein fabricated a branched structure containing AO groups on polypropylene/polyethylene spun-laced nonwoven(PP/PE SNW)fibers using grafting polymerization induced by radiation(RIGP)to improve AO *** chemical structures,thermal properties,and surface morphologies of the raw and treated PP/PE SNW fibers were *** results show that an adsorptive functional layer with a branching structure was successfully anchored to the fiber *** adsorption properties were investigated using batch adsorption experiments in simulated seawater with an initial uranium concentration of 500μg·L^(−1)(pH 4,25℃).The maximum adsorption capacity of the adsorbent material was 137.3 mg·g^(−1)within 24 h;moreover,the uranyl removal reached 96%within 240 *** adsorbent had an AO utilization rate of 1/3.5 and was stable over a pH range of 4–10,with good selectivity and reusability,demonstrating its potential for seawater uranium extraction.

关键词： Radiation graft technology Branching structure High amidoxime utilization Seawater uranium extraction Ultrafast adsorption

Benign giant-cell tumor of the common bile duct:A case report

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World Journal of Gastroenterology 2014年第41期20卷 15448-15453页

作者： Dan-Dan wang Ya-Min Zheng Liang-Hong Teng Yan-Ni Sun Wei Gao lei-ming wang Yue-Hua wang Fei Li De-Hong Lu Department of Pathology Xuanwu Hospital Capital Medical University Department of General Surgery Xuanwu Hospital Capital Medical University

Primary giant-cell tumors rarely arise in the common bile duct. We herein report a case of primary giant-cell tumor of the common bile duct. The patient was an 81-year-old male who was diagnosed with a well-defined 1.2-cm mass projecting into the lumen of the middle common bile duct. Excision of the gallbladder and extrahepatic bile duct and a Roux-en-Y cholangiojejunostomy were performed. Histologically, the tumor had no association with carcinomas of epithelial origin and was similar to giant-cell tumors of the bone. The tumor consisted of a mixture of mononuclear and multinucleated osteoclast-like giant cells. The mononuclear cells showed no atypical features, and their nuclei were similar to those of the multinucleated giant cells. CD68 was expressed on the mononuclear and multinucleated osteoclast-like giant cells, whereas CD163 immunoreactivity was restricted to the mononuclear cells. Six months after the operation, the patient was still alive and had no recurrence. The interest of this case lies in the rarity of this entity, the difficulty of preoperative diagnosis, and this tumor’s possible confusion with other malignant tumors.

关键词： Giant-cell tumor Common bile duct CD163 Surgical resection

Partial response to Chinese patent medicine Kangliu pill for adult glioblastoma: A case report and review of the literature

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World Journal of Clinical Cases 2021年第12期9卷 2845-2853页

作者： Ge Sun Wei Zhuang Qing-Tang Lin lei-ming wang Yu-Hang Zhen Sheng-Yan Xi Xiao-Lan Lin Department of Pharmacy Xuanwu Hospital of Capital Medical UniversityBeijing 100053China Department of Neurosurgery Xuanwu Hospital of Capital Medical UniversityBeijing 100053China Department of Traditional Chinese Medicine School of Medicine and Cancer Research CenterXiamen UniversityXiamen 361102Fujian ProvinceChina

BACKGROUND Glioblastoma is the most common type of brain tumor and is invariably fatal,with a mean survival time of 8-15 mo for recently diagnosed tumors,and a 5-year survival rate of only 7.2%.The standard treatment for newly diagnosed glioblastoma includes surgery followed by concurrent chemoradiotherapy and further adjuvant ***,the prognosis remains poor and longterm survival is *** report aimed to demonstrate a new therapeutic strategy for the treatment of *** SUMMARY A patient was referred to the Department of Neurosurgery with an intracranial space-occupying lesion with a maximum diameter of approximately 5 *** tumor was compressing functional areas,and the patient accordingly underwent partial resection and concurrent *** imaging and pathological findings were consistent with a diagnosis of glioblastoma with oligodendroglioma differentiation(World Health Organization IV).The patient was finally diagnosed with ***,the patient discontinued treatment due to intolerable side effects,and was prescribed Kangliu pill(KLP)7.5 g three times/d,which he has continued to *** shrinkage of the tumor(maximum diameter reduced from about 3.5 to about 2 cm)was found after 3 mo of KLP therapy,and the tumor was further reduced to about 1 cm after 3 *** patient’s symptoms of headache,limb weakness,and left hemiplegia were relieved,with no side *** KLP has been a successful intervention for glioblastoma, and the current caseindicates that traditional Chinese medicine may offer effective alternativetherapies for glioblastoma.

关键词： Glioblastoma Kangliu pill Traditional Chinese medicine Therapeutic effect Adjunct therapy Chinese patent medicine Case report

Alkaloids from the Roots of Saccopetalum prolificum

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Chinese Chemical Letters 2000年第2期11卷 129-130页

作者： ming lei wang Jiang DU Ruo Yun CHEN De Quan YU (Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050) Chinese Acad Med Sci Inst Mat Med Beijing 100050 Peoples R China Peking Union Med Coll Beijing 100050 Peoples R China

A new alkaloid, named prolifine (1), was isolated along with four known alkaloids, liriodenine (2), 6-hydroxyonychine (3), isooncodine (4) and discretamine (5) from the roots of Saccopetalum prolificum. The structure ... 详细信息

关键词： Saccopetalum prolificum alkaloid prolifine

A New Bislabdane-type Diterpenoid from cunninghamia lanceolata

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Chinese Chemical Letters 2000年第2期11卷 133-134页

作者： Jiang Da ming lei wang Ruo Yun CHEN De Quan YU (Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050) Chinese Acad Med Sci Inst Mat Med Beijing 100050 Peoples R China Peking Union Med Coll Beijing 100050 Peoples R China

A new bislabdane-type diterpenoid lanceolactin (I), was isolated from the roots of Cunninghamia lanceolata. Its structure was elucidated on the basis of spectroscopic methods, especially 2D-NMR techniques.

关键词： Cunninghamia lanceolata bislabdane-type diterpenoid lanceolatin

Interpretation of data and treatment of Jing-well point temperatures test

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TMR Theory and Hypothesis 2019年第4期2卷 260-266页

作者： lei-ming wang Kang Tan Li-Hao Chen Hunan University of Chinese Medicine HunanChina

The Jing-well point temperatures test method is a method to diagnose and guide the treatment of diseases by measuring the subjects' symmetrical well point temperature. it is improved from the method of knowing heat sensitivity. The application of Jing-well point temperatures test method is wide, and it can be used in internal and external gynecology and pediatrics and facial features department. at the same time, it has the advantage of objective and accurate diagnosis. The old law has some shortcomings, such as poor intuition, unavoidable omission of information, incomplete interpretation of information and so on. In this paper, Excel software is used to transform the data into line chart form, which improves the intuition and comprehensiveness of this method, so that the data can be better interpreted and used. It is newly proposed in this article that in addition to observing the longitudinal di fference of well point temperature, more attention should be paid to the horizontal contrast difference of well point temperature in different meridians. The article also summarizes a number of treatment methods, including acupuncture, moxa moxibustion, cupping and scraping, and the selection of acupoints, including mother acupoints, tenderness points and heat-sensitive moxibustion, so that doctors can combine traditional Chinese medicine professional knowledge in clinic.

关键词： Jing-well point temperatures test Meridian diagnostic methods Line graphs Data Teatment

Efficacy of liver transplantation for acute hepatic failure:asingle-center experience

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Hepatobiliary & Pancreatic Diseases International 2011年第4期10卷 369-373页

作者： Xian-Jie Shi,Hong-Bin Xu,Wen-Bin Ji,Yu-Rong Liang,Wei-Dong Duan,lei He,ming-Jun wang and Zhi-ming Zhao Department of Hepatobiliary Surgery Department of Anesthesiology General Hospital of PLA,Beijing 100853,China [a] Department of Hepatobiliary Surgery General Hospital of PLA Beijing 100853 China [b] Department of Anesthesiology General Hospital of PLA Beijing 100853 China

BACKGROUND:Acute hepatic failure (AHF) is a devastating clinical syndrome with a high mortality *** outcome of AHF varies with etiology,but liver transplantation (LT) can significantly improve the prognosis and survival rate of such *** study aimed to detect the role of LT and artificial liver support systems (ALSS) for AHF patients and to analyze the etiology and outcome of patients with this ***:A retrospective analysis was made of 48 consecutive patients with AHF who fulfilled the Kings College Criteria for LT at our *** analyzed and compared the etiology,outcome,prognosis,and survival rates of patients between the transplantation (LT) group and the non-transplantation (N-LT) ***:AHF was due to viral hepatitis in 25 patients (52.1%;hepatitis B virus in 22),drug or toxic reactions in 14 (29.2%;acetaminophen in 6),Wilson disease in 4 (8.3%),unknown reasons in 3 (6.3%),and miscellaneous conditions in 2 (4.2%).In the LT group,36 patients (7 underwent living donor LT,and 29 cadaveric LT) had an average model for endstage liver disease score (MELD) of ***-eight patients survived with good graft function after a follow-up of 27.3± 4.5 *** the waiting time,6 patients were treated with ALSS and 2 of them died during *** 30-day,12-month,and 18-month survival rates were 77.8%,72.2%,and 66.7%,*** the N-LT group,12 patients had an average MELD score of *** patients were treated with ALSS and all died during *** 90-day and 1-year survival rates were only 16.7% and 8.3%,***:Hepatitis is the most prominent cause of AHF at our *** patients with AHF,who fulfill the Kings College Criteria for LT,did not survive longer without *** did not improve the prognosis of AHF patients,but may extend the waiting time for a ***,LT is still the most effective way to improve the prognosis of AHF patients.

关键词： acute hepatic failure liver transplantation artificial liver support prognosis survival rate etiology