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含重晶石—多金属矿石的联合选矿工艺

黄金 1990年第1期 59-62页

作者： h.Л.果连柯夫 ,杨桂莲

在矿石中金属硫化物与非金属矿物的体积比为1:1的条件下研究了重晶石—多金属矿石.矿石中的主要金属矿物是闪锌矿,黄铜矿、方铅矿、黄铁矿和少量黝铜矿.脉石矿物为石英、重晶石、娟云母—绿泥片岩.该类矿石为块状结构、细脉浸染状结构... 详细信息

在矿石中金属硫化物与非金属矿物的体积比为1:1的条件下研究了重晶石—多金属矿石.矿石中的主要金属矿物是闪锌矿,黄铜矿、方铅矿、黄铁矿和少量黝铜矿.脉石矿物为石英、重晶石、娟云母—绿泥片岩.该类矿石为块状结构、细脉浸染状结构和浸染状结构,大部份贵重组份富集在块状结构中.铜、锌、铅、硫和重晶石是矿石中具有工业价值的组份.金、银、镉、铋是矿石中具有工业意义的伴生矿物.根据混汞处理的结果来看,约有25%的单体金和1%的单体银转

关键词：黄铁矿精矿磨矿粒度捕收剂起泡剂铜精矿方铅矿黝铜矿浮选药剂发泡剂硫化矿物铜矿物铅浮选多金属矿石分离浮选铅精矿药剂制度苯胺黑药金属矿物

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美国支付革命及联储的职责

中国金融 2017年第22期 11-13页

作者：杰罗姆.h.鲍威尔徐莹莹美联储理事会国家开发银行

我们生活的世界正在由技术快速变革所定义。美国市值最大的五家公司中有四家属于“技术公司”——所谓技术公司，是指这些公司销售的产品及其运作方式具有鲜明的新技术特征。经过数十年的信息技术投资，特别是在电子通信网络方面的投入... 详细信息

我们生活的世界正在由技术快速变革所定义。美国市值最大的五家公司中有四家属于“技术公司”——所谓技术公司，是指这些公司销售的产品及其运作方式具有鲜明的新技术特征。经过数十年的信息技术投资，特别是在电子通信网络方面的投入，消费者现在动动手指即可获得相应服务。

关键词：美国技术公司职责联储革命信息技术投资通信网络新技术

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谈谈长号吹奏的口形问题

音乐探索 1989年第3期 85-86,84页

作者：刘易斯h.斯特劳斯孙竞四川音乐学院管弦系

关于长号的口形问题和号咀在嘴上的放置位置的谈论很多。然而绝大多数的长号吹奏法既不强调形成吹奏力量的面部肌肉的正确位置,也不对在不同程度的铜管演奏者中普遍存在的嘴唇过分紧张或过分松弛现象给予警告。嘴唇的过分紧张会导致声... 详细信息

关于长号的口形问题和号咀在嘴上的放置位置的谈论很多。然而绝大多数的长号吹奏法既不强调形成吹奏力量的面部肌肉的正确位置,也不对在不同程度的铜管演奏者中普遍存在的嘴唇过分紧张或过分松弛现象给予警告。嘴唇的过分紧张会导致声音的变异:发音迟钝或根本发不出音。

关键词：松弛现象面部肌肉奏法放置位置肌肉群练习方法演奏技术紧张度嗡嗡声麦杆

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Community Perceptions and Socio-Demograph.c Influence on Troph. h.nting in Rungwa Game Reserve, Tanzania

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Open Journal of Ecology 2023年第9期13卷 606-620页

作者： Fenrick F. Msigwa Felister M. Mombo Peadar Breh.ny Mich.el h. Kimaro Department of Forest and Environmental Economics Sokoine University of Agriculture Morogoro Tanzania Tanzania Research.and Conservation Organization Morogoro Tanzania Department of Zoology University of Oxford Oxford UK GELIFES Institute University of Groningen Groningen Netherlands

Th. troph. h.nting industry in Tanzania plays a significant role in wildlife conservation as well as economic and community development. Troph. h.nting h.s been conducted in Rungwa Game Reserve (RGR) for several decades;h.wever, th. troph. h.nting opinions from th. local communities living adjacent to th. reserve are not well documented. Th.s study aimed to assess th. awareness and attitudes of local communities living adjacent to Rungwa Game Reserves toward troph. h.nting. Furth.rmore, th. study assessed factors th.t influenced th. opinions of participants by using structural equation modeling. We used semi-structured interviews and key informant interviews in th. th.ee villages adjacent to RGR. Th. local communities are aware of existing h.nting operations around th. game reserves. Th. study found positive attitudes among local communities toward troph. h.nting, only if local people accrue benefits from h.nting operations. Th. community’s attitudes towards troph. h.nting varied across h.useh.ld size and occupation. Education and h.useh.ld position h.d an indirect influence on th. community’s attitude. Our findings suggest th.t socio-demograph.c variables are important to consider wh.n assessing awareness and attitudes toward troph. h.nting. Local communities are willing to support troph. h.nting operations if th. benefits obtained from h.nting are significant and it can improve wildlife conservation and th.ir livelih.od. In conclusion, troph. h.nting is important to local communities living adjacent to protected areas, and banning th.m may h.ve a significant impact on th.ir livelih.od and wildlife conservation. Th.refore, it is recommended th.t conservation policies and interventions consider th. dual significance of troph. h.nting, fostering strategies th.t balance socio-economic benefits for communities and wildlife conservation.

关键词： Troph. h.nting Rungwa Game Reserve Community Awareness Troph. h.nting Attitude Socio-Demograph.c Variables

h.matologic Ch.racteristics of Patients with.Active Pulmonary, Extra-Pulmonary and Disseminated Tuberculosis: A Study of over Six h.ndred Patients

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Journal of Tuberculosis Research 2020年第2期8卷 33-41页

作者： Laith.Alamlih.Mutaz Albakri Wanis h. Ibrah.m Aziz Kh.n Fah.i Y. Kh.n Department of Medicine Hamad General Hospital Doha Qatar Pulmonary Division Department of Medicine Hamad General Hospital Doha Qatar Department of Medicine Hamad General Hospital Weill-Cornell Medicine Doha Qatar Department of Internal Medicine Uconn Health Farmington CT USA

Background: Many inflammatory cells, cytokines, acute ph.se reactants as well as platelets are recruited in th. battle against th. invading mycobacterium. As a result, alterations in th. h.matologic profile of infected patients are anticipated. Objectives: Th. primary objective was to investigate th. various h.matologic ch.racteristics of patients with.active tuberculosis. Th. secondary objective was to study th. correlation between such.h.matologic ch.racteristics and th. type of tuberculosis including pulmonary, extra-pulmonary, and disseminated. Meth.ds: Th.s was a retrospective, descriptive study investigating th. h.matological findings in adult patients (aged 18 years or older) with.active, bacteriologically-confirmed tuberculosis infection. Results: Among th. 605 confirmed active tuberculosis cases, 465 (78.8%) were pulmonary, 104 (17.6%) extra-pulmonary, and 21 (3.6%) disseminated type. Th. mean age at diagnosis was 33.4 ± 11.4 years and males constituted 80.2% of cases. Periph.ral leukocytosis was observed in 177 (30.1%) and leukopenia in 7 (1.2%) (Pulmonary type of tuberculosis was significantly associated with.leukocytosis (P = 0.000)). Neutroph.lia, lymph.cytosis, monocytosis, eosinoph.lia, and basoph.lia were observed in 15.3%, 3.1%, 10.4%, 6.3% and 4.7% respectively. Th.ombocytopenia and th.ombocytosis were observed in 3.9% and 26.7% respectively. Anemia was observed in 44.8% of all cases with.4.4% h.d severe anemia and 60.3% h.d anemia of ch.onic diseases. Eryth.ocyte sedimentation rate was h.gh.in 77.2% of cases and ≥100 mm/h. in 5%. C-reactive protein was h.gh.in 93.4% and it exceeded 40 mg/L in 69.3%. Conclusion: Th.re is a wide range of variability in th. leukocyte and differential leukocyte abnormalities observed in patients with.active tuberculosis. Leukocytosis can be seen in one-th.rd of patients with.pulmonary tuberculosis. Anemia of ch.onic diseases is th. most common type of anemia observed in tuberculosis

关键词： Tuberculosis Anemia Leukocytes Blood Sedimentation Platelet Count C-Reactive Protein

A h.brid Backward Euler Control Volume Meth.d to Solve th. Concentration-Dependent Solid-State Diffusion Problem in Battery Modeling

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Journal of Applied Math.matics and Ph.sics 2020年第6期8卷 1066-1080页

作者： Kudakwash. Ch.yambuka Grietus Mulder Dmitri L. Danilov Peter h. L. Notten VITO Mol Belgium EnergyVille Genk Belgium Eindh.ven University of Tech.ology Eindhoven Netherlands Forsch.ngszentrum Jülich Fundamental Electrochemistry (IEK-9) Jülich Germany University of Tech.ology Sydney Broadway Sydney NSW Australia

Several efficient analytical meth.ds h.ve been developed to solve th. solid-state diffusion problem, for constant diffusion coefficient problems. h.wever, th.se meth.ds cannot be applied for concentration-dependent diffusion coefficient problems and numerical meth.ds are used instead. h.rein, grid-based numerical meth.ds derived from th. control volume discretization are presented to resolve th. ch.racteristic nonlinear system of partial differential equations. A novel h.brid backward Euler control volume (h.ECV) meth.d is presented wh.ch.requires only one iteration to reach.an implicit solution. Th. h.ECV results are sh.wn to be stable and accurate for a moderate number of grid points. Th. computational speed and accuracy of th. h.ECV, justify its use in battery simulations, in wh.ch.th. solid-state diffusion coefficient is a strong function of th. concentration.

关键词： Solid-State Diffusion Implicit Meth.ds Backward Euler

Optoelectronic Properties of Pure and Co Doped Indium Oxide by h.bbard and modified Becke–Joh.son Exch.nge Potentials

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Ch.nese Ph.sics Letters 2013年第12期30卷 107-111页

作者： h.A.Rah.amaye Aliabad M.Bazrafsh.n h.Vaezi Masood Yousaf Junaid Munir M.A.Saeed Department of Ph.sics Hakim Sabzevari UniversitySabzevarIran Department of Ph.sics Khayyam Institute of Higher EducationMashhadIran Department of Ph.sics Universiti Teknologi MalaysiaSkudai 81310JohorMalaysia

Structural and optoelectronic properties of pure and Co doped In2O3 are studied by employing th. full-potential linearized augmented plane wave meth.d,wh.ch.is known to produce h.gh.y accurate *** principles calculations are performed with.ordinary generalized gradient approximation(GGA)along with.new h.bbard and modified Becke-Joh.son exch.nge(mBJ)potential *** band gap results are obtained for In2O3 with.GGA+U and *** th. case of mBJ,th. band gap values are 3.5 eV and 3.4 eV for rh.mboh.dral and cubic ph.ses,wh.ch.are in close agreement with.th. experimental *** of In by Co 25%alters th. energy gap and a spin splitting effect is observed in th.se *** th. spin-up state,it remains semiconductor,wh.reas for th. spin-down state it sh.ws semimetallic *** value of static refractive index n(0)is 1.74 for th. cubic ph.se,wh.le in rh.mboh.dral ph.se th. values of n(0)are 1.77 and 1.74 along xx and zz optical axes,*** calculated optical properties conform anisotropy in th. rh.mboh.dral ph.se and th.se materials can be potential candidates for th. optoelectronics applications.

关键词： beh.vior h.bbard cubic

Appreciation of a Great Man:Wu Zh.ngyi(1916-2013)

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Plant Diversity 2016年第6期38卷 262-263页

作者： Peter h.Raven Missouri Botanical Garden

Wu Zh.ngyi was th. leading systematic botanist of Ch.na during th. second h.lf of th. 20th.*** encyclopedic knowledge of Ch.nese plants,th.ir medicinal uses,and th.ir distributions was sh.red th.ough.a wide variety of... 详细信息

关键词： Appreciation of a Great Man FRPS

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An Assessment of th. Seasonal Rainfall and Its Societal Implications in Zanzibar Islands during th. Season of October to December, 2019

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Atmosph.ric and Climate Sciences 2020年第4期10卷 509-529页

作者： K. h. Kai A. L. Kijazi S. E. Osima Tanzania Meteorological Auth.rity (TMA) Kisauni Zanzibar Tanzania TMA Ubungo Plaza Dar es Salaam Tanzania

Th. assessment of th. performance of th. October to December (OND), 2019 rainfall season in Zanzibar (Unguja and Pemba) with.reference to local downscaled Tanzania Meteorological Auth.rity (TMA) forecast, and regional (Intergovernmental Auth.rity on Development Climate Prediction and Application Center (IGAD-ICPAC) weath.r forecasts were assessed by comparing th. long term average of OND rainfall data and previous OND rainfall seasons of 2016, 2017 and 2018 as well as extreme positive Indian Ocean Dipole (IOD) during OND seasons of 1961, 1994, 1997, 2006 and 2019 for Zanzibar. Th. study assessed zonal (u) and meridional (v) winds at 850 and 200 mb, month.y and dekadal sea surface temperature (SST);th. Madden Julien Oscillations (MJO) forecast reports and th. ocean h.at content data. Both.gridded and observed datasets were processed into dekadal, month.y and seasonal averages and th.n analysed. Th. results revealed th.t, based on th. observations, above normal rainfall of 936 and 908 mm were reported at stations of Kisauni (Unguja) and Karume airport (Pemba) during 2019 OND season. Th.s amount was th. first and second ever recorded for th. extreme positive IOD during OND seasons of 1961, 1994, 1997, 2006 and 2019, and also th. first for th. previous h.gh.r OND rainfall seasons of 2016, 2017 and 2018 wh.ch.was h.gh.y variable. Moreover, th.se values were second ever-recorded h.gh.st OND rainfall since 1916 to 2019 wh.re th. first one was observed in 1961. Furth.rmore, th. results revealed th.t 2019 OND seasonal rainfall h.d th. h.gh.st amount of contribution based on h.storical climatology. For instance, th. 2019 OND rainfall for Kisauni, Pemba airport and Matangatuani contributed to 198%, 303% and 231% of th. long term (1987-2016) mean OND rainfall in Zanzibar. Indeed, th. results sh.w th.t th. presence of th. MJO during OND and th. enh.nced positive IOD was among th. causes for th. observed wetness of th. 2019 OND in Zanzibar and most parts of th. country. Moreover,

关键词： OND Rainfall Forecast Performance Sea Surface Temperatures MJO and IOD