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国际医学放射学杂志 2021年第5期 608-608页

作者： G.dar S.N.Goldberg N.Hiller N.Caplan J.Sosna L.Appelbaum 卢福麟

摘要目的确定使用双源CT(DECT)低能量成像的影像学特征和严重程度指数能否提高急性胰腺炎的诊断率和预后预测。方法对有急性胰腺炎临床和影像学征象的病人

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Prevalence of Pre-operative Anxiety and Predictors among Elective Surgical Patients and Their Pre-operative Hemodynamic Changes at Muhimbili National Hospital

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open Journal of Medical Psychology 2023年第2期12卷 55-70页

作者： Rukia Abdul-Ghany Himid Msoma Ramadhani H. Khamis Laurean P. Rwanyuma Larry o. Akoko Araika-Zawadhafsa Mkulo Peter Msinde MMed (General Surgery) Dissertation Muhimbili University of Health and Allied Sciences Dar es Salaam Tanzania

Background: Surgery is a traumatic process that may subject patients to physiological and psychological responses leading to pre and post-operative effects. Preoperative anxiety, if severe may be associated with several complications including cancellation of surgery, poor intra- and post-operative analgesic control, altered post-operative healing, and longer hospital stays to mention a few. objective: The main purpose was to determine the prevalence and predictors of pre-operative anxiety among elective surgical patients and their hemodynamic changes in these patients in the Surgical department in MNH. Methodology: This was a prospective descriptive and analytical study performed at MNH which involved patients admitted for elective surgical procedures from June 2021 to February 2022. Information was gathered in a structured questionnaire along with APAIS scores. Results: 169 patients for elective surgery in General Surgery and Urology units were included in the study. Among them, 94 males and 74 females. The overall pre-operative anxiety was 11.8%, 80.5% had moderate to severe Information-Related anxiety, while 26% and 17.2% had moderate-to-severe surgery-related and anesthesia-related types of anxiety respectively. Conclusion: Pre-operative anxiety was comparatively lower in our settings as well no factor was found with a significant relation to pre-operative anxiety, hence further and broader evaluation is recommended to result in the assessment and management of patients before elective surgery.

关键词： Anxiety Elective Surgery Predictors APAIS

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保幼激素类似物对黄胸散白蚁兵蚁分化的诱导

昆虫学报 1974年第2期17卷 161-165页

作者：朱湘雄戴季达陈志辅金美文上海昆虫研究所

本文报道保幼激素类似物诱导黄胸散白蚁兵蚁分化的作用。试验证明:用保幼激素类似物处理的滤纸喂食工蚁组成的实验群体,可以引起工蚁向前兵蚁方向分化,发生这种分化的工蚁数量最高达45％。三种保幼激素类似物具有明显的作用,它们是:3,7,... 详细信息

本文报道保幼激素类似物诱导黄胸散白蚁兵蚁分化的作用。试验证明:用保幼激素类似物处理的滤纸喂食工蚁组成的实验群体,可以引起工蚁向前兵蚁方向分化,发生这种分化的工蚁数量最高达45％。三种保幼激素类似物具有明显的作用,它们是:3,7,11-三甲基十二碳-2,4-二烯酸乙酯、11-甲氧基-3,7,11-三甲基十二碳-2,4-二烯酸硫代乙酯和11-甲氧基-3,7,11-三甲基十二碳-2,4-二烯酸异丙酯。

关键词：保幼激素类似物白蚁激素杀虫剂兵蚁工蚁

The Shift of Traditional Agroecosystems in the in Eastern Arc Catchments of Tanzania

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Agricultural Sciences 2019年第10期10卷 1343-1358页

作者： Agnes G. Kapinga Abimbola Sangodoyin olayinka o. ogunkoya Marko B. Sulley Franco J. Mbegallo Gordon T. Madamombe Department of Environmental Management Pan Africa University Life and Earth Sciences Institute (PAULESI) University of Ibadan Ibadan Nigeria Department of Agriculture and Environmental Engineering University of Ibadan Ibadan Nigeria Department of Department of Geography Obafemi Awolowo University Ile-Ife Nigeria Pan Africa University Life and Earth Sciences Institute (PAULESI) University of Ibadan Ibadan Nigeria Department of Agricultural Economics and Business University of Dar es Salaam Dar es Salaam Tanzania Environmental Management Renewable Energy and Climate Change Research Centre Harare Institute of Technology Harare Zimbabwe.

The purpose of this study was to identify the drivers of the shift of traditional agro-ecosystems and their implication on catchment resources management of Eastern Arc Catchments of Tanzania. Lower Mngeta and Upper Zigi water catchments are situated within Eastern Arc Mountains of Tanzania. Household questionnaire, key informant interviews and focus group discussion were used for collecting primary data. The findings indicated that most of the participants (85.9% and 90.4% in Lower Mngeta and Upper Zigi catchments respectively) depend on subsistence rain-fed agriculture for their livelihoods. However, there are significant changes in production as a result of land fertility deteriorating and negative climatic changes (seasonal shift). This has become a major challenge for most of the farmers. To cope with agro-ecosystem dynamics, farmers in the study areas use both traditional and modern strategies as illustrated in the results section. While tradition always reported to be inexpensive, some modern agro-ecosystem practices reported to cause siltation, killing of fish and herbal plants, easy rotting of seeds (for maize) and bad aroma (for rice)in spite of having a high rate of return. It was also reported that depletion of traditions and norms of conduct, accelerated by multi-cultural interaction from immigrants, have led to deterioration of traditional agriculture practices. Moreover, arrival of agriculture companies and introduction of spice farming was reported to have caused manpower imbalance, unequal distribution of natural resources and less diversity of indigenous plants. The study concludes that communities are much into economic opportunity derived from agro-ecosystem than stewarding it. The study recommends that the effort restoring catchment ecosystem should come from both traditional and modern strategies so as to harmonize and accommodate environmental, economic and traditional values.

关键词： Agro-Ecosystem Culture and Diversity

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UV-3D打印材料研究进展

绿色包装 2021年第2期 33-37页

作者：袁昊蒋小珊林达理程光耀刘云轩王泰北京印刷学院机电工程学院北京102600 北京印刷学院数字化印刷装备北京市重点实验室北京102600 北京印刷学院印刷装备北京市高等工程研究中心北京102600 漳州理工职业学院漳州363000

UV-3D打印作为增材技术新的发展方向,具有设计自由,节约材料以及快速成型等优点,被广泛研究。本文通过分析立体光刻技术(SLA),数字光处理技术(DLP)和UV直写技术等,并研究了UV技术在3D打印领域的应用与发展。然后分析UV-3D打印常用的一... 详细信息

UV-3D打印作为增材技术新的发展方向,具有设计自由,节约材料以及快速成型等优点,被广泛研究。本文通过分析立体光刻技术(SLA),数字光处理技术(DLP)和UV直写技术等,并研究了UV技术在3D打印领域的应用与发展。然后分析UV-3D打印常用的一些材料,包括环氧树脂和丙烯酸树脂以及其发展现状。最后通过介绍UV技术在3D打印的应用现状提出发展对策。

关键词： 3D打印 UV固化光聚合材料

Variation in Catechin Composition of Popularly Cultivated Tea Clones in East Africa (Kenya)

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American Journal of Plant Sciences 2013年第3期4卷 628-640页

作者： Leonida Cherotich Samson M. Kamunya Amos Alakonya Solomon W. Msomba Marie A. Uwimana John K. Wanyoko Phillip o. owuor Department of Chemistry Maseno University Maseno Kenya Institute of Biotechnology Research (IBR) Jomo Kenyatta University of Agriculture and Technology Nairobi Kenya office Des Cultures Industrielles du Rwanda The’ (oCIR The’) Kigali Rwanda Tea Research Foundation of Kenya Kericho Kenya Tea Research Institute of Tanzania Dar Es Salaam Tanzania

Tea polyphenols and catechins have gained prominence in determination of tea quality. Tea leaves contain large amounts of catechins and their derivatives and these have shown positive effects on human health. An experiment was carried out to determine the level of catechins and polyphenols in 20 new clones found in two distinct tea growing areas. The trial comprising twenty clones was established in two distinct sites in Kenya using randomized complete block design with three replicates and consisted of 10 popular cultivars widely cultivated in the Lake Victoria Basin and additional 10 newly improved clones. Tea leaf samples were collected across two seasons;dry and wet seasons. Tea quality parameters entailing catechins, caffeine and total polyphenols was generated for the 20 clones across the two seasons and sites. The ISo 14502-1 and ISo 14502-1:2005 procedures were used for polyphenol and catechin analyses, respectively. The ANoVA results generated indicated that the level of catechins and polyphenols in tea were significantly different (p 0.05) and varietal dependent. Generally, the assam varieties had higher levels of catechins and polyphenols than the chinary and cambod varieties, indicating why they are popularly cultivated in the East African region and whose tea quality is highly regarded. Furthermore, the results from principle component analysis (PCA) grouped the clones into three major clusters with one comprising of high quality assam varieties, a mixture of moderate quality assam, cambod and chinary varieties and low catechin content assam anthocyanin-rich variety. It is concluded that the level of catechins in tea plants are varietal dependent, although environmental stress has effects on the synthesis of flavanoids. The results demonstrated that the differences in the accumulation of catechins among the tea clones could be important for the discrimination of clonal diversity.

关键词： Tea Health Camellia sinensis Catechins Variation Kenya

标准与简易便携式Co_2培养箱对牛体细胞核移植重构胚的体外发育能力影响的比较(英文)

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草食家畜 2001年第S2期 23-34页

作者： M.D. Varisanga 1, Y.J. Dong 2, N. R. Mtango 2,T. Suzuki 2 (1.Faculty of Science, Technology and Environmental Studies The open University of Tanzania dar es Salaam Tanzania 2.The United Graduate School of Veterinary Sciences, Yamaguchi University,

尽管利用克隆技术来扩大优良品种家畜的数量 ,以及生产以农业和生物医学为目的的转基因动物和拯救濒危动物品种的需求不断增加 ,克隆技术对于大规模应用仍然成功率太低 ,而且成本昂贵。为了探索培养因素对改进克隆效率的作用 ,我们比较... 详细信息

尽管利用克隆技术来扩大优良品种家畜的数量 ,以及生产以农业和生物医学为目的的转基因动物和拯救濒危动物品种的需求不断增加 ,克隆技术对于大规模应用仍然成功率太低 ,而且成本昂贵。为了探索培养因素对改进克隆效率的作用 ,我们比较了标准与简易便携式Co2 培养箱对通过融合胎儿成纤维细胞核与去核的体外成熟卵母细胞生产的牛重构胚。在这两种培养系统中 ,温度 ( 38.5℃ )和Co2 浓度( 5% )相同 ,便携式培养箱的Co2 浓度较低 ( 8%到 1 0 % ) ,该培养系统同时在负压影响下进行了操作。虽然两种培养系统对卵母细胞体外成熟 (MII)、融合率和第 7d发育囊胚的细胞数无显著差异 ,但便携式培养箱的卵裂率 (P o2 、o2

关键词：克隆静止期胎儿成纤维细胞电融合囊胚转基因

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吉如拉康文献《破除邪念》初探

攀登（藏文版） 2022年第3期 49-61页

作者：贡曲达桑西藏大学文学院

沃查纳吉如拉康(Lka khang)位于西藏自治区山南市乃东县沃结巴乡沃查纳村,是藏传佛教后弘期佛教文献的主要收藏地之一。藏文古典文献《破除邪念》正是藏于沃查纳吉如拉康,根据该文献的书写特点、所载内容、文法结构及版式设计,结合该文... 详细信息

沃查纳吉如拉康(Lka khang)位于西藏自治区山南市乃东县沃结巴乡沃查纳村,是藏传佛教后弘期佛教文献的主要收藏地之一。藏文古典文献《破除邪念》正是藏于沃查纳吉如拉康,根据该文献的书写特点、所载内容、文法结构及版式设计,结合该文献的作者信息、文献所载的相关地名、跋、题记等特征,进而推论出该文献的成书年代及其所属教派等问题,对于研究该文献本身及藏传佛教其他文献具有一定的参考意义。

关键词：沃查纳吉如拉康《破除邪念》文献尾跋题记特点

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圆弧焊接薄壁圆筒残余应力场的分析研究

钢结构 2009年第2期24卷 75-75页

作者： Afzaal M.Malik Ejaz M.Qureshi Naeem Ullah dar Iqbal Khan

由于圆弧焊接的薄壁圆筒在高科技工程,如航空机器、压力容器和核工程中的广泛应用,对焊接导致的如焊接变形和残余应力等缺陷的研究就显得非常重要。介绍了一个计算程序,用以分析低碳钢薄壁圆筒在圆弧焊接中的温度分布以及随后将产生的... 详细信息

由于圆弧焊接的薄壁圆筒在高科技工程,如航空机器、压力容器和核工程中的广泛应用,对焊接导致的如焊接变形和残余应力等缺陷的研究就显得非常重要。介绍了一个计算程序,用以分析低碳钢薄壁圆筒在圆弧焊接中的温度分布以及随后将产生的残余应力场。基于数值模拟的参数研究用于分析焊接所产生的残余应力中的关键参数的影响。考虑了低碳钢、焊丝和双椭圆热源模型的基于温度的热机械性能。通过全尺寸焊接试验中的瞬时温度分布和残余应力场证实了有限元模拟方法的精确性。其目的在于提供数据以证实薄壁圆筒现有焊接工艺的有效性,从而将预加应力导致的结构在使用期间失效的可能性降至最低。

关键词：数值模拟焊接模拟热力学分析残余应力薄壁圆筒

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桑给巴尔海峡的沉积物分布和输送

人类环境杂志 1995年第7期24卷 519-522页

作者： Yohanna W.Shaghude Kjell o.Wanns 郑斯中 Institute of Marine Sciences University of dar es Salaam Dept.of Geology and Geochemistry Stockholm University

引言坦桑尼亚的海岸带是一条沿着本土海岸的狭长地带,它包括三个岛屿,即奔巴岛、桑给巴尔岛和马菲亚岛。海岸的高原以厚的沉积岩为特征,断层大致呈南北方向。晚期地壳构造的发育影响了现在陆上和海内的地貌。桑给巴尔海峡的长度大约为12... 详细信息

引言坦桑尼亚的海岸带是一条沿着本土海岸的狭长地带,它包括三个岛屿,即奔巴岛、桑给巴尔岛和马菲亚岛。海岸的高原以厚的沉积岩为特征,断层大致呈南北方向。晚期地壳构造的发育影响了现在陆上和海内的地貌。桑给巴尔海峡的长度大约为120km,宽约35km(图1)。海峡底部以水的深度浅(10～50m)为特征,具有延伸的沙洲和有礁结构的小珊瑚台地。孤立的小礁石结构(块礁)也是常见的。

关键词：坦桑尼亚桑给巴尔海峡海峡沉积物