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Carbon Dioxide Concentrations and Light Levels on Growth and Mineral Nutrition of Juvenile Cacao Genotypes

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American Journal of Plant Sciences 2021年第5期12卷 818-839页

作者： Virupax C. Baligar Marshall K. elson Alex-Alan F. Almeida Quintino R. de Araujo Dario Ahnert Zhenli He USDA-ARS-Beltsville Agricultural Research Center Beltsville USA Department of Biological Science State University of Santa Cruz Ilhéus Brazil Indian River Research and Education Center IFAS University of Florida Fort Pierce USA

In many countries cacao (Theobroma cacao L.) is invariably grown as an understory crop in agroforestry types of cropping systems and subjected to low levels photosynthetic photon flux density (PPFD) due to presence of large number of upper story shade trees with poorly managed canopy structure. In recent years carbon dioxide concentration in the atmosphere is steadily increasing and it is unclear what impact this will have on performance of cacao grown under shade of upper story shade trees. A climatically controlled greenhouse experiment was undertaken to evaluate the effects of ambient and elevated carbon dioxide (400 and 700 μmol·mol-1) and three levels of PPFD (100, 200, and 400 μmol·m-2·s-1) on growth, and macro- and micronutrient use efficiency of three genetically contrasting cacao genotypes (CCN 51, VB 1117 and NO 81). Intraspecific variations were observed in cacao genotypes for growth parameters at ambient to elevated carbon dioxide and low to adequate levels of PPFD. With the exceptions of total root length and leaf area, irrespective of carbon dioxide and PPFD levels, all three genotypes showed significant differences in all the growth parameters. For all the cacao genotypes, increasing PPFD from 100 to 400 μmol·m-2·s-1 and carbon dioxide from 400 to 700 μmol·mol-1

关键词： Relative Growth Rate Net Assimilation Rate Mineral Nutrient Influx and Transport Mineral Nutrient Uptake Efficiency

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用X射线系统检测三叉戟火箭发动机

固体火箭技术 1981年第2期 56-59页

作者： Benjamin M.elson 刘富刚

洛克希德公司研制了一种X射线实时显像系统,用于检测海军C4三叉戟固体火箭发动机。此法比普通X射线系统检测更完全、更均匀、效率高且费用明显降低。这一看法为生产三叉戟导弹第一级发动机的赛奥科尔公司、生产该导弹第二、三级发动机... 详细信息

洛克希德公司研制了一种X射线实时显像系统,用于检测海军C4三叉戟固体火箭发动机。此法比普通X射线系统检测更完全、更均匀、效率高且费用明显降低。这一看法为生产三叉戟导弹第一级发动机的赛奥科尔公司、生产该导弹第二、三级发动机的赫克利斯公司和航空喷气战术系统公司的实验所证明。航空喷气公司利用该系统检测了陆军的霍克导弹发动机和海军通用动力标准导弹发动机。

关键词：实时显像海军军队发动机

比色法测定N-乙酰葡糖胺和N-乙酰半乳糖胺

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食品与药品 2010年第9期12卷 374-378页

作者： Morgan W T J elson L A 陈祥娥

乙酰葡糖胺与对二甲氨基苯甲醛的反应最初由Müller发现,即当戊-乙酰葡糖胺溶液与稀氢氧化钾共热后,加入盐酸酸化的对二甲氨基苯甲醛溶液（Ehrlich试剂）可产生强紫红色。

关键词：葡糖胺比色法测定乙酰对二甲氨基苯甲醛半乳糖甲醛溶液氢氧化钾盐酸酸化

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比色法测定葡糖胺和半乳糖胺

食品与药品 2010年第5期12卷 I0002-I0004页

作者： elson L A Morgan W T J 陈祥娥

Zuckerkandl和Messiner-Klebermass报道了一种用于测定葡糖胺的比色法。按其操作，被检液应含盐酸葡糖胺1～4mg，蒸发至于并用新鲜配制的甲氧基钠溶液处理，然后用醋酸酐将游离葡糖胺碱乙酰化以生成N-单乙酰化衍生物。N-单乙酰化衍生物... 详细信息

Zuckerkandl和Messiner-Klebermass报道了一种用于测定葡糖胺的比色法。按其操作，被检液应含盐酸葡糖胺1～4mg，蒸发至于并用新鲜配制的甲氧基钠溶液处理，然后用醋酸酐将游离葡糖胺碱乙酰化以生成N-单乙酰化衍生物。N-单乙酰化衍生物经稀碱预处理后加入对二甲氨基苯甲醛的酸溶液（Ehrlich试剂）可以显现强的紫红色。

关键词：比色法测定葡糖胺半乳糖对二甲氨基苯甲醛碱预处理乙酰化溶液处理衍生物

用于空调和热泵的涡旋式压缩机的设计及应用特性

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家用电器科技 2001年第3期 51-52页

作者： J.P elson G.F.Hungy 等谷轮公司

涡旋式压缩机的概念在近百年前已被提出，但仅在近三十年内才发展成可以高效率、大批量生产的工业产品，其应用领域在1－75KW功率范围内。从开发涡旋压缩机之初，其发展方向就已确定了－－即沿着提高能源效率和改善噪音特性的方向进行... 详细信息

涡旋式压缩机的概念在近百年前已被提出，但仅在近三十年内才发展成可以高效率、大批量生产的工业产品，其应用领域在1－75KW功率范围内。从开发涡旋压缩机之初，其发展方向就已确定了－－即沿着提高能源效率和改善噪音特性的方向进行。产品可靠性也是一个重要设计评判准则，尤其是对液体制冷剂的允许极限和对系统污染物和摩损的适应性。这些参数构成了有优良运行特性和可靠性的涡旋压缩机产品开发的基础。从机械及传热学角度来看，涡旋式压缩机具备了以下优点：①在涡旋式压缩机机构中所有接触点的滑动速度均较低，这就有可能利用直接接触来实现密封，而不需用油作密封剂。这种接触排除了间隙的存在，从而使泄漏减少到了绝对最小量。

关键词：涡旋式压缩机空调热泵噪声振动

Metals Complexes Formed with Oleanolic Acid

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International Journal of Organic Chemistry 2018年第1期8卷 160-169页

作者： Nilton C. Ribeiro Antonio J. Demuner Marcelo H. dos Santos Célia R. A. Maltha elson A. de Alvarenga Slavko Komarnytsky Chemistry Department Universidade Federal de Vi&ccedil osa Avenida Peter Henry Rolfs s/n Campus Universitário Vi&ccedil osa Minas Gerais Brazil IFMT Rondonópolis Brazil North Carolina State University Research Campus Kannapolis NC USA

The oleanolic acid possesses diverse pharmacological properties, it is considered as a good starting material for creating new compounds. The oleanolic acid isolated of Plumeria obtusa leaves was used as raw material to obtained calcium, magnesium, zinc, nickel and copper complexes. The structures of complexes were confirmed by HRMS, 1H NMR, and 13C NMR. Five new compounds were synthesized to promote increased biological activity of oleanolic acid and PCR assays for the different type of cancer.

关键词： Oleanolic Acid Complex PCR

Neurocognitive and mental health outcomes in children with tungiasis:a cross-sectional study in rural Kenya and Uganda

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Infectious Diseases of Poverty 2023年第6期12卷 98-98页

作者： Berrick Otieno Lynne elson Abneel K.Matharu Naomi Riithi Esther Chongwo Khamis Katana Carophine Nasambu Francis Mutebi Herman Feldmeier Jürgen Krücken Ulrike Fillinger Amina Abubakar Kenya Medical Research Institute (KEMRI)-Wellcome Trust Programme Hospital Road Kilifi Kenya Centre for Tropical Medicine and Global Health Nuffield Department of Medicine University of Oxford Oxford UK International Centre of Insect Physiology and Ecology (ICIE) Human Health Theme Nairobi Kenya Institute for Parasitology and Tropical Veterinary Medicine Freie Universität Berlin Berlin Germany Institute for Human Development Aga Khan University Nairobi Kenya School of Veterinary Medicine and Animal Resources College of Veterinary Medicine Animal Resources and Biosecurity Makerere University Kampala Uganda Charité University Medicine Berlin Germany

Background Tungiasis,a neglected tropical parasitosis,disproportionately afects *** empirical studies have reported neurocognitive and mental health outcomes of children with ectoparasitic skin diseases like *** of tungiasis suggests it could detrimentally afect cognition and *** study pioneered the investigation of neurocognitive and mental health outcomes in children with *** This was a multi-site cross-sectional study including 454 quasi-randomly sampled school-children aged 8-14 from 48 randomly selected schools in two counties in Kenya and a district in *** participants were stratifed into infected and uninfected based on the presence of *** infected were further classifed into mild and severe infection groups based on the intensity of the ***,validated,and standardized measures of cognition and mental health such as Raven Matrices and Child Behaviour Checklist were used to collect *** tests including a multilevel,generalized mixed-efects linear models with family link set to identity were used to compare the scores of uninfected and infected children and to identify other potential risk factors for neurocognitive and behavioural *** When adjusted for covariates,mild infection was associated with lower scores in literacy[adjustedβ(aβ)=−8.9;95%confdence interval(CI)−17.2,−0.6],language(aβ=−1.7;95%CI−3.2,−0.3),cognitive fexibility(aβ=−6.1;95%CI−10.4,−1.7)and working memory(aβ=−0.3;95%CI−0.6,−0.1).Severe infection was associated with lower scores in literacy(aβ=−11.0;95%CI−19.3,−2.8),response inhibition,(aβ=−2.2;95%CI−4.2,−0.2),fne motor control(aβ=−0.7;95%CI−1.1,−0.4)and numeracy(aβ=−3;95%CI−5.5,−0.4).Conclusions This study provides frst evidence that tungiasis is associated with poor neurocognitive functioning in *** tungiasis is a chronic disease with frequent reinfections,such negative efects may potentially impair their development and l

关键词： Tungiasis Tunga penetrans Neglected tropical disease Neurocognition Mental health School-aged children Africa

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裂缝之上

建筑实践 2014年第8期 24-27页

作者：杨一石 elson Yabiku Bruno Cesar S.Santos

船到桥头自然直。Marcelo Sodre建筑事务所的设计师Marcelo先生应该会认同这句中文在建筑设计中包含的意义。因为,他说他相信,当设计遇到难题时,肯定是存在解决办法的,且办法往往不止一个。而设计师需要做的,就是选出最具可持续性并且... 详细信息

船到桥头自然直。Marcelo Sodre建筑事务所的设计师Marcelo先生应该会认同这句中文在建筑设计中包含的意义。因为,他说他相信,当设计遇到难题时,肯定是存在解决办法的,且办法往往不止一个。而设计师需要做的,就是选出最具可持续性并且合乎客户要求的那个方法。所以,当遇到一个对角线上有六米裂缝的地块时,他依然能在反复比较后,冷静决策出一个颇有创意又合情合理的设计方案。

关键词：休闲空间设计师

产蛋母鸡育成期中各种因素与损伤性啄羽倾向的关系(续完)

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国外畜牧学（猪与禽） 2007年第6期27卷 22-25页

作者： H.A. Van de Weerd A. elson 陈平（译）覃矜（校）英国ADAS有限公司不详

【上期回顾】：上期介绍了啄羽的基本概念、各种饲养条件下的啄羽流行情况和影响啄羽行为的因素,使读者对产蛋鸡的啄羽情况及其原因有了初步的认识。

关键词：啄羽行为产蛋母鸡育成期损伤流行情况饲养条件产蛋鸡