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2<sup>k</sup>Factorial Experiments on Factors that Influence the Recovery of Gold during the Upgrade of Ilesha-Itagunmodi Gold Ore through Froth Flotation

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Journal of minerals and materials Characterization and Engineering 2014年第1期2卷 32-39页

作者： Kayode Emmanuel Oluwabunmi Abraham Adewale Adeleke Adelana Razak Adetunji samson Olaitan Jeje Abiodun Ayodeji Abioye Olusola Adedayo Adesina Fatai Afolabi Ayeni Folahan Peter Ibitoye Department of Chemical Engineering Landmark University Omu-Aran Nigeria materials Science and Engineering Obafemi Awolowo University (O.A.U.) Ile-Ife Nigeria Prototype Engineering Development Institute (PEDI) Ilesa Nigeria Prototype Engineering Development Institute (PEDI) Ilesa Nigeria materials Science and Engineering Obafemi Awolowo University (O.A.U.) Ile-Ife Nigeria

A low-grade gold ore from Ilesha-Itagunmodi, south western Nigeria was panned, dried and ball-milled before sieving into fractions. The morphological, mineralogical and chemical composition was studied by optical micro-scopy (Reflected and Transmission), X-ray diffraction (XRD) and Energy Dispersive X-ray fluorescence (XRF), respectively. The sieved fractions were subjected to chemical analysis (AAS). The +106 μm sieve had the highest concentration of the mineral and was then selected for the upgrade through froth flotation using standard reagents. In this paper a report on a 2k factorial experiment that provides an understanding of the impact of operational variables on the quantity of gold mineral obtained from the ore during froth flotation is presented. Analysis results showed that Ilesha-Itagunmodi gold ore is non-refractory with fine grain particles, amenable to froth flotation and contained about 20 other associated minerals, gold had a concentration of about 0.0024%. A com-bination of P-Xanthate and amine glycol collectors at a pH of 9.2 only produced a considerable increase in gold yield. This translated to about 87.13% increase in recovery of gold from the ore. Analysis of variance (ANOVA) was carried out and the model equation obtained was subsequently optimised to obtain a model equation that could be used in predicting the recoverable quantity of gold, indicating that F11,1-values for Collector concentration, Frother concentration, pH and Conditioning time were 156.86, 6.96, 43.81, and 56.77 respectively. A model with an F value of 88.41 was obtained which indicated that the model was significant. The model equation obtained was subsequently optimised to be able to predict the recoverable quantity of gold. A “Pred R-Squared” value of 0.9365 (93.65%) was also obtained and is in reasonable agreement with the “Adj R-Squared” value of 0.9534 (95.34%). It was established that Ilesha placer gold ore is amenable to froth flotation using standard reagents.

关键词： Factorial Froth Flotation Collector Frother Concentration Surface Graph Conditioning Time

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Immunopathology and the myeloid Response to Neurotropic Flavivirus Infection

Immunopathology and the Myeloid Response to Neurotropic Flav...

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第八届全国免疫学学术大会

作者： Rachael L Terry Daniel R Getts Caryn van Vreden Ariane m Davison Amanda Yeung Paula Niewold Zheng Lung Ling Shane R Thomas iain L Campbell Nicholas JC King Discipline of Pathology School of Medical SciencesUniversity of Sydney School of molecular Biosciences University of Sydney Bosch Institute University of Sydney Centre for Vascular Research School of Medical Sciences The University of New South Wales

We have shown that infection with flaviviruses is accompanied by heightened immune responses leading to *** activation of microglia and accumulation of macrophages in the brain are hallmarks of viral encephalitis and could also contribute to this,however mechanisms of recruitment,differentiation and function in neurotropic viral infection are poorly *** investigating the myeloid lineage in encephalitis caused by the mosquito-borne flavivirus,West Nile Virus(WNV),in an in vivo murine model,we have shown-fold increase in CD45int/CD11b+/CD11c-microglial numbers by d6-7 post-infection,with up to 50%of leukocytes of macrophage *** marrow(Bm)reconstitution experiments and adoptive transfer

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病斑桑叶和喷布过内吸杀真菌剂对蚕儿饲育的影响

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中国蚕业 1982年第4期 44-45页

作者： A.K.Sikda m.V.samson Y.R.madhavaRaomurthuzaBaig B.Nataraju 李锡坤

用病斑桑叶和喷布过内吸杀真菌剂桑叶作为饲料,分别进行两季养蚕试验,从而调查和研究这两种类型叶对蚕儿的影响。发觉用病斑桑叶饲育的蚕儿其平均全茧量、茧层量和出丝率等与健康叶相比都受到不良的影响。在另外一种情况下,用喷布过两... 详细信息

用病斑桑叶和喷布过内吸杀真菌剂桑叶作为饲料,分别进行两季养蚕试验,从而调查和研究这两种类型叶对蚕儿的影响。发觉用病斑桑叶饲育的蚕儿其平均全茧量、茧层量和出丝率等与健康叶相比都受到不良的影响。在另外一种情况下,用喷布过两种杀真菌剂(多菌灵、苯菌灵)的桑叶养蚕,发现所用的浓度即使高达0.1%,喷布后三天用叶也并不影响蚕儿的生长发育和茧质。

关键词：蚕儿出丝率杀真菌剂茧层量桑叶辛凉解表药病斑内吸

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用植被分布的光谱信息进行土壤数值分类

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土壤学进展 1992年第4期20卷 26-29,48页

作者： S.A.samson D.T.Lewis 徐彬彬

应用牧区植被的光谱信息特征来识别和描述土壤图中与水分系列有关的制图单元。用单联接聚类分析法把由机载光谱仪获得的光谱数据进行了相对客观和自然的分组。类似的数值分类方法,以往常用于选择某些理化性质以进行土壤分类。本文将1.2-... 详细信息

应用牧区植被的光谱信息特征来识别和描述土壤图中与水分系列有关的制图单元。用单联接聚类分析法把由机载光谱仪获得的光谱数据进行了相对客观和自然的分组。类似的数值分类方法,以往常用于选择某些理化性质以进行土壤分类。本文将1.2-2.4μm范围内的128个光谱段信息作为聚类分析的变量。从显示在枝状图上的各联线,可以看出9个土壤图单元和2个水体间在形态上的相似点或不相似处。从图上还能看到石灰性土,非石灰性土,钠质土和沼泽土等各类土壤以及无堤水体均明显地相聚成类。

关键词：土壤数值分类光谱信息植被分布

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慢性肾脏病患者铁剂应用的争议：来自改善全球肾脏病预后组织(KDIGO)会议的结论

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肾脏病与透析肾移植杂志 2016年第4期25卷 363-370页

作者： iain C.macdougall Andreas J.Bircher Kai-Uwe Eckardt Gregorio T.Obrador Carol A.Pollock Peter Stenvinkel Dorine W.Swinkels Christoph Wanner Gü nter Weiss Glenn m.Chertow 陈佩玲(翻译) 龚德华(审校) Department of Renal medicine King's College Hospital London UK Allergy Unit Dermatology Clinic University Hospital Basel Basel Switzerland Department of Nephrology and Hypertension Friedrich-Alexander-Universitat Erlangen-Numberg Erlangen Germany Universidad Panamericana School of medicine Mexico City Mexico University of Sydney Sydney Australia Royal North Shore Hospital Sydney Australia Division of Renal medicine Department of Clinical Science Intervention and Technology Karolinska University Hospital Stockholm Sweden Department of Laboratory medicine Translational Metabolic Laboratory Radboud University Medical Center Nijmegen the Netherlands Renal Division University Hospital of Wiirzburg Wiirzburg Germany Department of Internal medicine VI Infectious Disease Immunology Rheumatology Pneumology Medical University of Innsbruck Innsbruck Austria Division of Nephrology Stanford University School of Medicine Palo Alto California USA 南京军区南京总医院肾脏科国家肾脏疾病临床医学研究中心全军肾脏病研究所南京210016 不详

慢性肾脏病和终末期肾病患者常需补铁治疗。但近年来铁剂的使用逐年增加,带来了铁超载、氧化应激和超敏反应等新问题,并可能促进感染的发生,其使用的安全性受到关注。为此,改善全球肾脏病预后组织(KDIGO)召开专家组会议,全面评估铁剂使... 详细信息

慢性肾脏病和终末期肾病患者常需补铁治疗。但近年来铁剂的使用逐年增加,带来了铁超载、氧化应激和超敏反应等新问题,并可能促进感染的发生,其使用的安全性受到关注。为此,改善全球肾脏病预后组织(KDIGO)召开专家组会议,全面评估铁剂使用的利和弊,并且提供合理使用方案以减轻急性反应及其他毒副作用。

关键词：慢性肾脏病超敏反应感染铁超载氧化应激

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杨嘉辉:声临其境

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艺术与设计 2020年第6期9卷 132-135页

作者：理耕杨嘉辉(图) m+(图) 无不详芝加哥大学斯马特美术馆

中国香港艺术家杨嘉辉凭借其装置作品《消音状况#22:消音的柴可夫斯基第五交响曲》得到首届希克奖评审委员会一致赞赏,于今年5月荣获首届希克奖得主殊荣。在他的创作中,声音是通向某种哲学性思考的现象。此现象通过他的"编曲",进而作为... 详细信息

中国香港艺术家杨嘉辉凭借其装置作品《消音状况#22:消音的柴可夫斯基第五交响曲》得到首届希克奖评审委员会一致赞赏,于今年5月荣获首届希克奖得主殊荣。在他的创作中,声音是通向某种哲学性思考的现象。此现象通过他的"编曲",进而作为带着审美可能性的艺术被呈现在我们面前。但倘若我们仅仅将其视作所谓的"纯艺术",只关心那些可听、可见、可感知的成分.

关键词：第五交响曲装置作品评审委员会希克柴可夫斯基中国香港纯艺术消音

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Fiscal Policy and Inflation in Nigeria

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Journal of Sustainable Business and Economics 2023年第2期6卷 1-11页

作者： Bredino samson Fiderikumo Peter Dikeogu Cynthia Department of Economics Faculty of Social SciencesUniversity of Port HarcourtRivers State500004Nigeria School of Commerce and management Bayelsa State PolytechnicAleibiriP.M.B 168Nigeria Alvan Ikoku Federal College of Education Owerri Imo State460281Nigeria

This paper empirically examined the impact of fiscal policy on inflation in *** series data on inflation,government revenue,government expenditure,and gross domestic product were sourced from the Central Bank of Nigeria(CBN).The aforementioned secondary data cover the period from 1981 to *** Augmented Dickey Fuller(ADF)unit root test and Johansen co-integration test were used to testing for data stationarity and the existence or otherwise of co-integrating equations ***,data were analyzed using Ordinary Least Square and Parsimonious Error Correction *** from the study show that government expenditure and revenue both have a positive relationship with the rate of inflation,though the latter is not statistically ***,there is a positive but insignificant relationship between inflation and gross domestic *** line with the above findings,we,therefore,recommend that the Nigerian government at all levels(local,state,and federal)should be tactful in the use of fiscal policy tools to avoid triggering inflationary pressure and its negative multiplier effects on the welfare of its citizenry.

关键词： Inflation Fiscal policy Gross domestic product Government expenditure Government revenue

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Healthy soils for sustainable food production and environmental quality

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Frontiers of Agricultural Science and Engineering 2020年第3期7卷 347-355页

作者： Xia LIANG Jizheng HE Fusuo ZHANG Qirong SHEN Jinshui WU lain mYOUNG Anthony GO'DONNELL Ligang WANG Enli WANG Julian HILL Deli CHEN School of Agriculture and Food The University of MelbourneVictoria 3010Australia College of Resources and Environmental Sciences National Academy of Agriculture Green DevelopmentKey Laboratory of Plant Soil Interactions(Ministry of Education)China Agricultural UniversityBeijjng 100193China Jiangsu Provincial Key Laboratory for Organic Solid Waste Utilization National Engineering Research Center for Organic-Based FertilizersJiangsu Collaborative Innovation Center for Solid Organic Waste Resource UtilizationCollege of Resources and Environmental ScienceNanjing Agricultural UniversityNanjing 210095China Key Laboratory of Agro-Ecological Processes in Subtropical Regions Institute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125China School of Life and Environmental Sciences and Sydney Institute of Agriculture Faculty of ScienceThe University of SydneyCamperdownNSW 2006Australia University of Western Australia CrawleyWA 6009Australia Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural SciencesBeijing 100081China CSIRO Agriculture and Food CanberraACT 2601Australia Ternes Scientific UpweyVictoria 3158Australia

Soil is the foundation for sustainable foodproduction and environmental protection. Created byunsustainable land management practices and a range ofsocial, economic and environmental drivers, soil degrada-tion and pollution have been an ongoing threat tointernational food security and environmental *** degradation and pollution assessments are, however,often focused on the soil itself with little scope to devisenew soil management approaches that match foodproduction systems and/or *** study draws lessons from an Australia-China JointResearch Center Program, Healthy Soils for SustainableFood Production and Environmental Quality: a researchplatform that has brought together multi-disciplinaryapproaches fromworld-renowned universitiesandresearch organizations in Australia and China. To thisend, a framework is presented for future soil managementin a new way that combines excellence in research,industry and policymakers in a partnership that will ensurenot only the right focus of the research but also that high-quality outputs will be transferable to industry and end-users.

关键词： Australia China environmental quality food production healthy soils

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Nat Genet:单细胞分析解开结直肠癌细胞的神秘面纱

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现代生物医学进展 2017年第15期17卷 I0003-I0003页

作者： Huipeng Li, Elise T Courtois, Debarka Sengupta, Yuliana Tan Shyam Prabhakar Elise T Courtois, Yuliana Tan Paul Robson Debarka Sengupta Kok Hao Chen, Jolene Jie Lin Goh Paul Jongjoon Choi Say Li Kong, Axel m Hillmer iain Beehuat Tan Clarinda Chua iain Beehuat Tan Lim Kiat Hon Wah Siew Tan mark Wong Lawrence J K Wee iain Beehuat Tan Paul Robson Paul Robson Paul Robson Computational and Systems Biology Genome Institute of Singapore Singapore Developmental Cellomics Laboratory Genome Institute of Singapore Singapore Department of Computer Science and Engineering and Center for Computational Biology Indraprastha Institute of Information Technology Delhi India Synthetic Biology Genome Institute of Singapore Singapore Cancer Therapeutics and Stratified Oncology Genome Institute of Singapore Singapore Department of medical Oncology National Cancer Centre Singapore Singapore Department of Pathology Singapore General Hospital Singapore Department of Colorectal Surgery Singapore General Hospital Singapore Data Analytics Department Institute for Infocomm Research Singapore Program in Cancer and Stem Cell Biology Duke-NUS Medical School Singapore The Jackson Laboratory for Genomic medicine Farmington Connecticut USA Department of Genetics and Genome Sciences Institute for Systems Genomics University of Connecticut Farmington Connecticut USA Department of Biological Sciences National University of Singapore Singapore.

结合单细胞基因组学和计算机技术，一个研究团队（包括来自杰克逊实验室（JAx）单细胞生物学主任Paul Robson博士在内）鉴定出了11种结直肠癌肿瘤的癌细胞组成及邻近的非癌细胞。这对于更好的肿瘤靶向诊断和治疗很重要。”使用单细胞测... 详细信息

结合单细胞基因组学和计算机技术，一个研究团队（包括来自杰克逊实验室（JAx）单细胞生物学主任Paul Robson博士在内）鉴定出了11种结直肠癌肿瘤的癌细胞组成及邻近的非癌细胞。这对于更好的肿瘤靶向诊断和治疗很重要。”使用单细胞测序。”JAX科学家、这篇发表在Nature Genetics上的文章共同第一作者Elise Courtois说道。”我们可以根据肿瘤中的细胞组成将结直肠癌进一步分类。因为每种亚型的肿瘤病人生存率存在差别，我们的方法将为肿瘤医生提供更多的关于肿瘤预后和治疗的信息。”

关键词：单细胞分析结直肠癌癌细胞 Nat 细胞组成肿瘤病计算机技术细胞生物学

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功能性mRI与颈内动脉巴比妥钠盐试验(Wada试验):谁能更好地预测个体术后记忆力转归?

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国际医学放射学杂志 2010年第3期 281-281页

作者：张竞文 S. Dupont E. Duron S. samson m. Denos E. Volle C. Delmaire Epilepsy Unit Neurology Clinic Paul Castaigne Hpital de la Pitié-Salpêtrière APHP 47 boulevard de l'Hpital INSERmU739 Faculté de Médecine Pitié-Salpêtrière

摘要目的回顾性分析血氧水平依赖性功能mRI是否有助于预测癫病人颞叶术后的记忆力改变。材料与方法本研究经伦理审查

关键词： mRI 记忆力颈内动脉颈动脉 Wada 功能性

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