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欧氏空间自映射零点的merrill重复开始算法

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中山大学学报(自然科学版)(中英文) 1986年第2期 73-78页

作者：王则柯中山大学数学系

本文以欧氏空间自映射零点计算问题为背景,采用整数标号,改造了merrill 重复开始算法,使其程序实施变得简单,并且建立保证计算收敛的一个充分条件.

关键词：单形所有单纯形 merrill 零点点(数学) 顶点自映射欧氏空间算法

加锌沉金法(merrill—Crowe法)的计算机控制

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黄金 1985年第1期 31-32页

作者： Robert M.Van Zyl,龙炳清湿法冶金工业公司董事长

美国蒙大那州诺立斯地区的格鲁布斯塔克金矿建立了一座完全自动化和计算机控制的从浸出母液中脱出金、银的加锌沉淀法工厂.这个系统是由湿法冶金工业公司研制出来的,其特点是:自动测量和记录贵液与贫液的含金浓度;自动控制锌的加入速度... 详细信息

美国蒙大那州诺立斯地区的格鲁布斯塔克金矿建立了一座完全自动化和计算机控制的从浸出母液中脱出金、银的加锌沉淀法工厂.这个系统是由湿法冶金工业公司研制出来的,其特点是:自动测量和记录贵液与贫液的含金浓度;自动控制锌的加入速度;用真空度检测溶液的含氧量;用打印机输出处理结果;自动控制各种泵的马达和阀门.精确计算所产的金银量,用来作为一种可靠的安全保障.

关键词：计算机控制电脑控制 merrill Crowe 计算机控制器计算机自动控制系统沉金加锌

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无需扰动的merrill算法

计算数学 1988年第2期 158-162页

作者：王则柯中山大学计算机科学系

1.引言记n维欧氏空间R~n的非空紧凸子集族为P(R~n).设F:R~n→P(R~n)是上半连续的集值映射.称x∈R~n为F的一个Kakutani不动点,如果x∈F(x). 考虑计算F:R~n→P(R~n)的Kakutani不动点的问题.熟知,merrill重复开始

关键词：单形定理单纯形 merrill 单纯剖分常值映射不动点固定点点(数学) 算法

Eocene fossil Alseodaphne from Hainan Island of China and its paleoclimatic implications

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Science China Earth Sciences 2009年第10期52卷 1537-1542页

作者： LI JingZhao QIU Jue LIAO WenBo JIN JianHua School of Life Sciences Sun Yat-Sen UniversityGuangzhou 510275China

Alseodaphne changchangensis sp. nov. (Lauraceae), with a perfectly preserved fossil leaf, was found in the Eocene Changchang Formation from the Changchang Basin of Hainan Island, China. This represents the earliest occurrence at the lowest latitude for the genus Alseodaphne, and offers important fossil evidence for further investigation of the origin and evolution of this genus and the paleoclimate of Hainan Island in the Eocene. Based on leaf morphology and cuticle characteristics, our fossil specimen is closest to the living species A. hainanensis merrill, which is distributed mainly in tropical lowland rain forests, tropical montane rain forests, and subtropical montane evergreen broad-leafed forests on Hainan Island, and also found on the Wanshan Islands of Zhuhai of Guangdong Province and in northern parts of Vietnam. In the above areas, the climate factors are similar, i.e., the mean annual temperature is 20–22.6°C, the mean annual range of temperature 12–12.6°C and the mean annual precipitation 1784–2500 mm. Based on the nearest living species analysis, we conclude that the climate of the Changchang Basin on Hainan Island during the Eocene was close to that of the distribution areas of the living A. hainanensis.

关键词： Alseodaphne changchangensis sp. nov. A. hainanensis merrill Eocene Changchang Basin Hainan Island Lauraceae paleoclimate

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Output Hypothesis： Its History and Its Future

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外语教学与研究 2008年第1期40卷 45-50页

作者： merrill Swain Yang Luxin (interviewer) University of Toronto Beijing Foreign Studies University

merrill Swain博士是加拿大多伦多大学安大略教育学院资深教授,曾任美国应用语言学协会主席(1998—1999),现任世界应用语言学协会副主席,是国际知名学者,发表过150多篇学术论文。她提出的输出假设已为我国外语教学工作者所熟悉。merrill... 详细信息

merrill Swain博士是加拿大多伦多大学安大略教育学院资深教授,曾任美国应用语言学协会主席(1998—1999),现任世界应用语言学协会副主席,是国际知名学者,发表过150多篇学术论文。她提出的输出假设已为我国外语教学工作者所熟悉。merrill Swain教授于2007年5月对北京外国语大学进行了为期20天的访问,期间举办了"浸入式教学和社会文化理论研讨会",介绍她在二语教学研究领域三十多年来的研究。本文是北京外国语大学中国外语教育研究中心杨鲁新副教授(下称Yang)对merrill Swain教授的专访,就输出假设学说的发展及其在我国外语教学中的应用等问题进行了广泛的探讨。

关键词：输出假设学说外语教学 merrill Swain 杨鲁新浸入式教学社会文化理论

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Kinetic Aspects of Gold and Silver Recovery in Cementation with Zinc Power and Electrocoagulation Iron Process

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Advances in Chemical Engineering and Science 2012年第3期2卷 342-349页

作者： Gabriela V. Figueroa Martinez José R. Parga Torres Jesús L. Valenzuela García Guillermo C. Tiburcio Munive Gregorio González Zamarripa Department of Chemical Engineering and Metallurgy University of Sonora Hermosillo México Department of Metallurgy and Materials Science Institute of Technology of Saltillo Saltillo México

The merrill-Crowe or Cementation process is used for concentration and purification of gold and silver from cyanide solutions. Among other available options for recovery of precious metals from cyanide solutions, Electrocoagulation (EC) is a very promising electrochemical technique for the recovery of this precious metals. In this work first, an introduction to the fundamentals of the merrill Crowe and EC process are given, then Kinetic aspects conditions and results of the both process, for the removal of gold and silver from cyanide solutions are presented, and finally the characterization of the solid products formed during the EC process with X-ray Diffraction and SEM are shown. Results suggests that The cementation of both gold and silver by suspended zinc particles conforms to well-behaved fist order kinetics and for the EC process the results show that is an excellent option to remove Au and Ag from cyanide solution by using iron electrodes. Finally, 99.5% of gold and silver were removed in the experimental EC reactor, and it was achieved in 5 minutes or less.

关键词： Cyanidation merrill Crowe Electrocoagulation Kinetics

Interaction between Soybean Cultivars and Seed Density

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American Journal of Plant Sciences 2015年第9期6卷 1425-1434页

作者： Igor Oliveri Soares Pedro Milanez de Rezende Adriano Teodoro Bruzi Alan Mario Zuffo Everton Vinicius Zambiazzi Vanoli Fronza Cícero Monti Teixeira Department of Agriculture Federal University of Lavras (UFLA) Lavras Brazil Brazilian Agricultural Research Corporation (Embrapa-Soja) Londrina Brazil Agricultural Research Company of Minas Gerais (Epamig) Uberaba Brazil

Plant, environmental conditions and management type will determine final crop yield. Enhanced yield can be reached by using well-adapted and potentially productive genotypes;all of them ally to crop cultural practices and management. Among these, seed density stands out, once it interferes with plant morphology and competition for water and nutrients. Thus, this study aimed to evaluate the effect of varied seed densities on agronomic traits in soybean, besides identifying cultivars with wide adaptability to different environments and seed densities. Six soybean cultivars were assessed under four seed densities (100, 200, 300 and 400 thousand plants·ha-1), in nine different environments from Minas Gerais State, Brazil. The experimental design was a completely randomized block design with three replications. The BRSMG 760SRR and BRSMG 820RR cultivars had the best average performance independent of the environments and seed densities. The seed density of 300 thousand plants per hectare showed to be as the most adequate for soybean cultivation on the evaluated environments. Furthermore, seed density interacted with the agronomic traits in soybean.

关键词： Glycine max L. merrill Genotypes Yield Plant Population

Performance of Conventional and Transgenic Soybean Cultivars in the South and Alto Paranaiba Regions of Minas Gerais, Brazil

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American Journal of Plant Sciences 2015年第9期6卷 1385-1390页

作者： Isabela Pereira de Lima Adriano Teodoro Bruzi Flávia Barbosa Silva Botelho Everton Vinicius Zambiazzi Igor Oliveri Soares Alan Mario Zuffo Department of Agriculture Federal University of Lavras (UFLA) Lavras Brazil

The aim of this study was to compare transgenic and conventional soybean cultivars in regard to yield performance and agronomic traits. Six soybean cultivars were tested: three conventional cultivars and their three isogenic transgenic derivatives, in two locations, Lavras and Patos de Minas in Minas Gerais, Brazil, in the 2012/13 crop season. Data on yield (kg·ha-1), plant height (cm), and tolerance to lodging were collected. The cultivars had different responses. The cultivar BRS/MG46 Conquista had lower yields than its isogenic derivative BRS Valiosa RR, but this was not seen with the conventional cultivar M-SOY 6101, which produced more than its isogenic derivative M-SOY 7211 RR. Between the isogenic cultivars BRS/MG68 Vencedora and BRS Favorita RR, there were no significant differences. Nevertheless, the contrast between the mean values of the transgenic and conventional cultivars shows that the conventional cultivars had mean values greater than the transgenic cultivars.

关键词： Evaluation Glycine max L. merrill Isogenic Lines Transgenic Crops

Natural Distribution of <i>Nauclea diderrichii</i>(Rubiceae) in Semi Deciduous Forest of Togo (West Africa) and Implementation of Integrated Silviculture

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American Journal of Plant Sciences 2014年第9期5卷 1220-1235页

作者： Kossi Adjonou Yaovi Nuto Paul P. Bosu Stephen Adu-Bredu Adzo Dzifa Kokutse Kouami Kokou Département de Zoologie Faculté des Sciences Université de Lomé Lomé Togo Forest Research Institute of Ghana (FORIG) Kumasi Ghana Laboratoire de Botanique et Ecologie Végétale Faculté des Sciences Université de Lomé Lomé Togo

West African tropical forests spread from Senegal to Togo. They are considered as one of the world biodiversity hotspots. But these forests are disappearing very quickly because of human activities. In Togo, tropical forests degradation has been increased since 1980 because of improved coffee cultivation;about 67% of forests in the sub-humid mountains zone disappeared between 1978 and 2000. Facing this fast deterioration of the forests, populations begin to plant teak (an exotic species) that is the only choice proposed by local forest service. This survey consists in valuing the potentialities to restore the Togolese tropical forest using the local commercial species, recognized on the wood market. The first species retained is Nauclea diderrichii (De Wild. & Th. Dur.) merrill, that spreads in the African tropical forest from the Sierra Leonne to Uganda and through the Congo basin. In Togo, this plant species colonises the plain of the Litimé. The objective of the present study is to analyze the distribution of the natural populations in the plain of Litimé forest but also natural and artificial regeneration of the species. The perspective is to repeat this experiment with other local species in other regions of Togo in order to diversify the plantations and to protect the local forest biodiversity.

关键词： Litimé Tropical Forests Degradation Biodiversity Nauclea diderrichii (De Wild. & Th. Dur.) merrill