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37篇 您的检索式:作者名="D.Miller"
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1Sulphidization flotation for recovery of lead and zinc from oxide-sulfide ores显示文摘A new flowsheet was developed to recover the valuable minerals from oxide or oxide-sulfide ores of lead and zinc. The flowsheet consisted of flotation of sulfide minerals, desliming and sulphidization-flotation of oxide minerals. The corresponding reagent system and techniques to the flowsheet were investigated. Batch and continuous tests show that the dosage of sodium sulfide, temperature, and collector type are main affecting factors on the recovery of smithsonite and cerussite. For the flotation of cerussite, there is an appropriate dosage of sodium sulfide at which the recovery reaches its maximum value. The required sodium sulfide for smithsonite flotation is higher than that for cerussite and the recovery of smithsonite flotation increases with the dosage of sodium sulfide at low level and becomes insensitive at high dosage. The appropriate temperature for smithsonite and cerussite flotation is found to be 2540℃. Amines are found to be the effective collectors for the flotation of smithsonite after sulphidization. Investigation also shows that desliming prior to sulphidization-flotation is essential to the effective recovery of smithsonite and cerussite, and the desliming process of two-stage hydrocyclon is well feasible and effective for the treatment of lead-zinc oxide ores. A further treatment on the cerussite flotation concentrate by shaking table is proposed to obtain higher lead grade.FA Keqing Jan D.Miller 姜涛 李光辉 2005中国有色金属学会会刊:英文版2005,15,5:11
2混合铜渣的微波浸出(英文)显示文摘在微波炉中采用双氧水和乙酸溶液浸出由转炉和闪速炉渣组成的混合铜渣。该混合铜渣含51%Fe_2O_3、3.8%CuO、3.2%Zn。研究表明,对混合渣浸出率影响较大的因素有:浸出时间,液固比,双氧水浓度和乙酸浓度。在最优的浸出条件下:乙酸浓度4 mol/L,双氧水浓度4 mol/L,微波功率900 W,浸出时间30 min,液固比25 mg/L,浸出温度100°C,铜、铁、锌的浸出率分别可达到95%、1.6%和30%。与传统的浸出工艺相比较,微波浸出可缩短浸出时间,同时,可选择性浸出渣中的金属元素。动力学研究表明,渣中金属元素的浸出可用一收缩未反应核模型来描述,浸出反应的表观活化能为16.64 kJ/mol,反应级数为1.09.M.Deniz TURAN Z.Abidin SARI Jan D.MILLER 2017Transactions of Nonferrous Metals Society of China2017,27,6:9
3Parkes脉冲星数据库使用方法(英文)显示文摘Parkes脉冲星数据库目前已经收集了从1991年至今由Parkes望远镜观测的165755个数据文件。数据文件及其存取方法遵循虚拟天文台协议。介绍了脉冲星数据库的使用方法,以及使用在线界面进行数据获取的例子。J.Khoo G.Hobbs R.N.Manchester D.Miller J.Dempsey 2012天文研究与技术2012,9,3:8
4The role of vitamin D in cancer prevention显示文摘Vitamin D,also known as cholecalciferol,is the precursor to the active steroid hormone 1,25-dihydroxyvitamin D3(calcitriol; 1,25(OH)2D3).The main physiological role for 1,25(OH)2D3 is to regulate calcium and inorganic phosphate homeostasis for bone health.More recently,vitamin D has been investigated for its effects in the prevention and treatment of a variety of diseases such as cancer,autoimmune disorders,and cardiovascular disease.Preclinical data strongly support a role for vitamin D in the prevention of cancer through its anti-proliferative,pro-apoptotic,and anti-angiogenic effects on cells.Epidemiologic and clinical studies have shown mixed data on the correlation between serum vitamin D levels and cancer risk.This report seeks to outline results from the most recent preclinical and clinical studies investigating the potential role of vitamin D in cancer prevention.Rachel A.Ness Duane D.Miller Wei LI 2015Chinese Journal of Natural Medicines2015,13,7:7
5磨矿环境和晶格杂质对锂辉石浮选的影响(英文)显示文摘研究油酸钠体系中磨矿对锂辉石浮选行为的影响。不同磨矿环境导致锂辉石表面暴露的金属活性位点的含量有差异,从而显著影响锂辉石的可浮性。酸处理后金属活性位点脱离锂辉石表面,使得锂辉石的可浮性下降,进一步表明金属活性位点对锂辉石浮选的重要作用。金属离子杂质可能来源于磨矿环境或晶格杂质。密度泛函理论(DFT)计算表明,杂质铁、钙质点主要是以晶格取代的形式存在于锂辉石表面,镁难以发生晶格取代。与钙和镁相比,铁更易于与油酸钠发生相互作用。扫描电镜结果表明,锂辉石的粒度和解理特性不同,导致其暴露晶面的差异。在不同磨矿环境下,粒度、解理特性和金属离子杂质对油酸钠捕收剂浮选锂辉石起着重要作用。朱广丽 王毓华 王旭明 Jan D.MILLER 卢东方 郑霞裕 赵悦豪 郑海涛 2019Transactions of Nonferrous Metals Society of China2019,29,7:5
6肺叶袖状切除及其并发症的处理显示文摘邵凡 G.E.M.Young John D.Miller 2001中国综合临床2001,17,6:4
7宗教与政治:对欧洲和美国的比较分析显示文摘通过对美国和欧洲共10个国家(英国、法国、德国、意大利、西班牙、丹麦、荷兰、奥地利、波兰)的16,000名成年人进行的跨国调查(2002及2003年),本文考察了当地的宗教信仰状况,着重于他们对神权、生命的实质及生命的开始等三方面的理解认识,并进一步研究了他们的一些宗教行为(如祈祷及参与宗教活动的频率)和对宗教领袖的信任程度。本文的重点在于分析个人宗教价值观对其就新兴生化科技所持政治态度的影响。为此收集了广泛的研究数据,考察受访者对主要生化科技,如胚胎干细胞应用、转基因食品和克隆等的观点和态度。最后,使用多元回归研究模式的结构方程模型(SEM)分别描述了人们的宗教价值观、对生命的理解、年龄、性别和教育水平等几个变量对于堕胎、胚胎干细胞应用研究和安乐死等三项公共政策争论的影响。Jon D.Miller Rafael Pardo 宋长青 胡帆 2006开放时代2006,,4:4
8膝关节多发韧带损伤的手术时机选择和术后功能锻炼的系统性综述显示文摘背景:膝关节外伤性脱位导致的多发韧带损伤并不常见,相关研究也较少。由于缺乏前瞻性数据资料,所以对于手术时机选择以及术后康复方案的选择仍存在争议。本篇综述旨在对比早期、延期和分期手术的结果以及各种康复方案的疗效。方法:收集检索24篇回顺性研究,共计396个膝关节,侧重于严重多发韧带损伤的外科治疗。韧带损伤包括前、后十字韧带和(或)内单侧或内外双侧副韧带。数据采集后,按照手术时间(早期、延期和分期)将患者分组。同时我们也将术后早期功能锻炼和术后制动进行对比。William R.Mook, MD Mark D.Miller, MD David R. Diduch, MD JayHertel, PhD ATC, Yaw Boachie-Adjei, MD Joseph M.Hart, PhD, ATC 韦祎(译) 冯华(译) 2010中华骨科杂志2010,30,3:2
9Anion structural effects on interaction of rare earth element ions with Dowex 50W X8 cation exchange resin显示文摘The effect of the anion in the original rare earth element(REE) solution on the reversible ion exchange of Ce nitrate and Ce sulfate with the Dowex 50 W X8 was investigated using attenuated total reflection infrared(ATR-IR) spectroscopy, continuous flow reactor studies coupled with inductively coupled plasma mass spectroscopy(ICP-MS), and density functional theory(DFT). The simulated IR spectrum at the DFT B3 LYP/6-31 G(d) level was compared to the experimental results to characterize the IR spectrum, molecular interactions, and bonding of the ion exchanged species. The continuous liquid flow reactor studies show a capacity of 0.72 mmol/g sorbent for the Ce nitrateand 0.96 mmol/g sorbent for the Ce sulfate with the Dowex 50 W X8. The flow reactor studies reveal the type of solute anion(SO_4^((2-)) or NO_3^((-))) associated with the REE during cation exchange significantly affects the sorption capacity of the Dowex 50 W X8 ion exchange resin. The calculated REE binding energy(BE) and the DFT optimized structures suggest that the differences in sorption capacity is the result of the formation of different types of partially ionexchanged Ce_2^((3+))2 SO_4^((2-)) and Ce^((3+)) 3 NO_3^((-)). These results suggest that the solute anion affects the equilibrium constants of the Dowex resin by the formation of a charged layer capable of retaining the counterion. Modifying the sulfonic acid site(H+) in the Dowex 50 W X8 with the NH_4^+ counterion does not affect the sorption capacity and retention times of the Ce nitrate and Ce sulfate species. These results suggest that the counterions and co-ions having a finite size, may limit access to the Dowex sulfonate active site where the type of REE cation as a nitrate or sulfate in solution may significantly modify the sorption capacity of the ion exchange resin. Similar results are obtained during sorption with nitrates and sulfates of Sm and Yb.Duane D.Miller Ranjani Siriwardane Dustin Mcintyre 2018Journal of Rare Earths2018,36,8:2
10Economic exposure and integrated risk management显示文摘Kent D.Miller 1998Strat Mgmt J1998,,5:1
11The Empirical Development of an Instrument to Measure Writing Apprehension显示文摘Daly John A Michael D.Miller 0,,:1
12Green Tea Ingestion by Rats Does Not Affect Iron Absorption but Does Alter the Composition? of the Saliva Proteome显示文摘Ariel B.Beverly LeZhu Tara L.Fish TheodoreThannhauser Mike A.Rutzke Dennis D.Miller 2012Journal of Food Science2012,,5:1
13The topological viewshed:embedding topological pointers into digital terrain models to improve GIS capability for visual landscape analysis显示文摘The effort to develop a Digital Earth has made dramatic progress in terms of visualisation and visual data integration for use-cases which demand semantically rich analysis.To provide this analysis and ensure legitimate representations of the spatial data from which visualisation are derived,it is necessary to provide more comprehensive analytical capabilities of the view.Questions of aesthetic valuation of landscape require a richer analytical response than simply‘whether and possibly how much of’an object or area of land can be seen.It requires interrogation of the scene as it appears and to distinguish between transient visual effects and those locally invariant to view point change.This paper explores a data structure to support scene analytics.As such,it first reviews the existing techniques from the fields of GIS and computer graphics as to their potential and limitations in providing a qualitatively more nuanced visual analysis.It then introduces a new method of encoding visually apparent relationships into terrain models.A prototype implementation is presented based on the Quad-Edge Triangular Irregular Network,though it is believed that raster or vector implementation would be possible.Although developed primarily with landscape analysis in mind,the method could have wider applicability.N.Sang C.Gold D.Miller 2016International Journal of Digital Earth2016,9,12:1
14Inflammatory Biomarkers and Physical Function in Older, Obese Adults with Knee Pain and Self‐Reported Osteoarthritis After Intensive Weight‐Loss Therapy显示文摘Gary D.Miller Barbara J.Nicklas Richard F.Loeser 2008Journal of the American Geriatrics Society2008,,4:1
15The role of CTLA‐4 in induction and maintenance of peripheral T cell tolerance显示文摘Todd N.Eagar Nitin J.Karandikar Jeffrey A.Bluestone Stephen D.Miller 2002Eur. J. Immunol2002,,4:1
16Molecular mimicry as an inducing trigger for CNS autoimmune demyelinating disease显示文摘Emily M. L.Chastain Stephen D.Miller 2011Immunological Reviews2011,,1:1
17Personality and Sexual Risk Taking: A Quantitative Review显示文摘Rick H.Hoyle Michele C.Fejfar Joshua D.Miller 2008Journal of Personality2008,,6:1
18Universal primers for fluorescent labelling of PCR fragments—an efficient and cost‐effective approach to genotyping by fluorescence显示文摘M. J.BLACKET C.ROBIN R. T.GOOD S. F.LEE A. D.MILLER 2012Molecular Ecology Resources2012,,3:1
19Activity of adefovir dipivoxil against all patterns of lamivudine‐resistant hepatitis B viruses in patients显示文摘C. E.Westland H.Yang W. E.Delaney M.Wulfsohn N.Lama C. S.Gibbs M. D.Miller J.Fry C. L.Brosgart E. R.Schiff S.Xiong 2005Journal of Viral Hepatitis2005,,1:1
20The validity of viral hepatitis and chronic liver disease diagnoses in Veterans Affairs administrative databases显示文摘J. R.KRAMER J. A.DAVILA E. D.MILLER P.RICHARDSON T. P.GIORDANO H. B.EL‐SERAG 2007Alimentary Pharmacology & Therapeutics2007,,3:1
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