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世界科学 1997年第7期 29-30页

作者： RichardO’mara

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阿尔塔洛克公司熔化岩石,钻地热井

科技纵览 2020年第3期 12-13页

作者： mara Gallucci 不详

无聊探测器教授讲完课后查看了一下他的电脑。软件程序显示,大部分学生在30分钟后就没兴趣了。教授记了下来,以便修改讲课内容。科学家们正在努力让这一虚构场景成为现实。最近在《IEEE可视化与计算机图形学汇刊》发表的一篇文章中,研... 详细信息

无聊探测器教授讲完课后查看了一下他的电脑。软件程序显示,大部分学生在30分钟后就没兴趣了。教授记了下来,以便修改讲课内容。科学家们正在努力让这一虚构场景成为现实。最近在《IEEE可视化与计算机图形学汇刊》发表的一篇文章中,研究人员介绍了一个可以根据学生面部表情录像分析他们情绪的人工智能(AI)系统。该系统“向教师提供了一个掌握学生课堂参与度的快速且便捷的办法”,中国香港科技大学的计算机科学家屈华民说道。

关键词：计算机图形学计算机科学家面部表情软件程序讲课内容地热井阿尔塔录像分析

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烟草科研人员当选使工程院蒙羞

烟草科研人员当选使工程院蒙羞

Efficient Mimics for Elucidating Zaxinone Biology and Promoting Agricultural Applications

作者： mara Hvistendahl

译稿:12月8日,在谢剑平当选为中国工程院院士的几个小时之内,网上一片哗然,网站上激起了一片谴责声。在备受欢迎的腾迅微博上,刘志峰第一个跳起来,质疑这位"神圣"科学家的研究,他所负责的研究被用于"更有效的杀人"。一些杰出的科学家们...

译稿:12月8日,在谢剑平当选为中国工程院院士的几个小时之内,网上一片哗然,网站上激起了一片谴责声。在备受欢迎的腾迅微博上,刘志峰第一个跳起来,质疑这位"神圣"科学家的研究,他所负责的研究被用于"更有效的杀人"。一些杰出的科学家们也加入这个质疑的队伍。陈君石是我国食品安全专家,同时也是中国工程院院士,对于谢剑平当选院士,他在博客中说:"我感觉很羞惭"。前卫生部副部长王陇德在接受京华时报时表示,谢剑平是郑州烟草研究院副院长,他的研究"低焦油"卷烟是烟草营销的骗术,很显然违背了我国于2005年签署的国际《烟草控制框架公约》。原预防医学科

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Molecular Plant 2020年第11期13卷 1654-1661页

作者： Jian You Wang Muhammad Jamil Pei-Yu Lin Tsuyoshi Ota Valentina Fiorilli mara Novero Randa A.Zarban Boubacar AKountche Ikuo Takahashi Claudio Martinez Luisa Lanfranco Paola Bonfante Angel R.de Lera Tadao Asami Salim Al-Babili King Abdullah University of Science and Technology Division of Biological and Environmental Science and Engineeringthe BioActives LabThuwal 23955-6900Saudi Arabia Graduate School of Agricultural and Life Sciences The University of TokyoTokyoJapan Department of Life Sciences and Systems Biology University of TorinoTorinoItaly Universidade de Vigo Facultade de Quimica and CINBIOVigoSpain

Zaxinone is an apocarotenoid regulatory metabolite required for normal rice growth and *** addition,zaxinone has a large application potential in agriculture,due to its growth-promoting activity and capability to alleviate infestation by the root parasitic plant Striga through decreasing strigolactone(SL)***,zaxinone is poorly accessible to the scientific community because of its laborious organic synthesis that impedes its further investigation and *** this study,we developed easy-to-synthesize and highly efficient mimics of zaxinone(MiZax).We performed a structure-activity relationship study using a series of apocarotenoids distinguished from zaxinone by different structural *** the obtained results,we designed several phenyl-based compounds synthesized with a high-yield through a simple *** tests showed that MiZax3 and MiZax5 exert zaxinone activity in rescuing root growth of a zaxinone-deficient rice mutant,promoting growth,and reducing SL content in roots and root exudates of wild-type ***,these compounds were at least as efficient as zaxinone in suppressing transcript level of SL biosynthesis genes and in alleviating Striga infestation under greenhouse conditions,and did not negatively impact *** together,MiZax are a promising tool for elucidating zaxinone biology and investigating rice development,and suitable candidates for combating Striga and increasing crop growth.

关键词： apocarotenoids zaxinone zaxinone mimics strigolactone Striga root parasitic plants

The Importance of Three-Dimensional Imaging from CBCT in Elucidating a Well-Defined Radiolucency Image within the Maxillary Sinus: A Case Report

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Open Journal of Radiology 2014年第3期4卷 255-259页

作者： Ricardo Alves de Mesquita Cláudia Borges Brasileiro Tania mara Pimenta Amaral Department of Oral Surgery and Pathology School of Dentistry Universidade Federal de Minas Gerais Belo Horizonte Brazil lDepartment of Oral Surgery and Pathology School of Dentistry Universidade Federal de Minas Gerais Belo Horizonte Brazi

This study describes a case of antral septum with alveolar process extension that is identified using cone-beam computed tomography (CBCT). Periapical radiolucency was observed in the maxillary sinus, and clinical and radiographic examinations ruled out the possibility of odontogenic lesions. CBCT was performed to elucidate the radiolucency identified using periapical radiography. A 3-D image indicated that the maxillary sinus extended into the alveolar process toward the palatal cortical bone in the region of the maxillary right first molar, as well as an antral septum extending from the inferior and lateral wall of the right maxillary sinus. CBCT is an important tool for use in dental practice because CBCT images reveal the entire volume of the maxillary sinus and allow for identification of patient anatomy and anatomical variations, which is essential for planning appropriate surgical interventions.

关键词： Diagnostic Imaging Cone-Beam Computed Tomography Radiography Maxillary Sinus

滨河大道SAMUEL-DE CHAMPLAIN景观设计

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城市环境设计 2009年第2期 49-59页

作者： mara CRAMER 阿福中央美术学院北京798时代空间

多样性为了使河岸景观看起来更加舒适宜人,设计师对植物配置进行了精心地设计,利用当地的植物资源,种植在河的沿岸,丰富了河岸的景观。纵向巨型的自行车赛道和蜿蜒的人行道把人们从文化的一端带到了运动中心和另一端的表演中心。这段滨... 详细信息

多样性为了使河岸景观看起来更加舒适宜人,设计师对植物配置进行了精心地设计,利用当地的植物资源,种植在河的沿岸,丰富了河岸的景观。纵向巨型的自行车赛道和蜿蜒的人行道把人们从文化的一端带到了运动中心和另一端的表演中心。这段滨河由一些城市和景观设计相互结合的当代艺术景区点缀其中。这座工程的文化中心包括了4个当代花园。运动中心由两个足球场,

关键词：景观设计建筑设计 SAMUEL-DE CHAMPLAIN 本土植物

Storage of Campomanesia adamantium(Cambess.)*** Seeds:Influence of Water Content and Environmental Temperature

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American Journal of Plant Sciences 2014年第17期5卷 2555-2565页

作者： Daiane Mugnol Dresch Silvana de Paula Quintao Scalon Tathiana Elisa Masetto Rosilda mara Mussury Pos-Doutoranda em Agronomia(PNPD/CAPES) Universidade Federal da Grande Dourados(UFGD)DouradosBrasil Faculdade de Ciencias Agrarias Universidade Federal da Grande Dourados(UFGD)DouradosBrasil Faculdade de Ciencias Biologicas e Ambientais Universidade Federal da Grande Dourados(UFGD)DouradosBrasil

The present work evaluated the conservation of Campomanesia adamantium seeds under different conditions. The fruits used in the study were collected from matrices located in the city of Ponta Porã-MS, Brazil. After processing, the seeds were slowly dried to different water content levels and subsequently exposed to various environmental conditions: 25°C ± 2°C, 35% relative humidity (laboratory);16°C ± 1°C, 40% relative humidity (cold and dry);8°C ± 1°C, 35% relative humidity (refrigeration);and -18°C ± 1°C, 42% relative humidity (freezing). Each treatment was conducted for 0 (recently processed seeds, with superficial drying of 40 minutes), 30, 60, 90, 120, 150, and 180 days. Seed potential was physiologically evaluated based on radicle protrusion, percentage of normal seedlings, seedling length (primary root, shoot and total), and dry mass of the seedlings. The experimental design was a completely randomized factorial scheme with split-split plots (4 temperatures/environments × 5 water content × 7 storage periods). C. adamantium seeds tolerated a reduction in the water content to 15.3% but did not tolerate the storage period, confirming the recalcitrant behavior of the seeds.

关键词： Myrtaceae Brazilian Savanna Drying Conservation

Alternative Distributions to Estimate Usual Intake of Nutrients for Groups

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Journal of Life Sciences 2011年第7期5卷 569-574页

作者： Jose Eduardo Corrente Juliana M. Morimoto Dirce Maria Lobo Marchioni Regina mara Fisberg Department of Biostatistics Biosciences Institute UNESP Botucatu Sao Paulo 18618-900 Brasil Department of Nutrition Faculty of Public Health University of Sao Paulo Sao Paulo 18618-900 Brasil

When assessing food intake patterns in groups of individuals, a major problem is finding usual intake distribution. This study aimed at searching for a probability distribution to estimate the usual intake of nutrients using data from a cross-sectional investigation on nutrition students from a public university in Sao Paulo state, Brazil. Data on 119 women aged 19 to 30 years old were used. All women answered a questionnaire about their lifestyle, diet and demographics. Food intake was evaluated from a non-consecutive three-day 24-hour food record. Different probability distributions were tested for vitamins C and E, panthotenic acid, folate, zinc, copper and calcium where data normalization was not possible. Empirical comparisons were performed, and inadequacy prevalence was calculated by comparing with the NRC method. It was concluded that if a more realistic distribution for usual intake is found, results can be more accurate as compared to those achieved by other methods.

关键词： Diet nutrients adequate intake measurement error models usual intake distribution.

Elastomer Composites with Enhanced Ice Grip Based on Renewable Resources

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Materials Sciences and Applications 2018年第4期9卷 412-429页

作者： Nikolai Dishovski Filis Mitkova mara Kandeva Yordan Angelov Ivan Uzunov Milcho Ivanov Dimitar Klissurski University of Chemical Technology and Metallurgy Sofia Bulgaria Ecopolymeric Systems Ltd. Sofia Bulgaria Technical University Sofia Bulgaria Institute of General and Inorganic Chemistry Bulgarian Academy of Sciences Sofia Bulgaria

Slips and falls on icy surfaces can cause serious injuries of people. The primary risk factor for slipping incidents is undoubtedly the decreased friction coefficient between the shoe sole and the ice or snow surface. Nowadays environmental protection has been gaining significance and becoming highly important for the various innovation strategies. In rubber industry the concept of environmental protection is more often associated with the maximum use of elastomers and ingredients from renewable sources in the manufacture of rubber products. The aim of this work is to investigate the possibilities of using elastomers and ingredients from renewable sources—epoxidized natural rubber, silica obtained by rice husks incineration and microcrystalline cellulose—as fillers and rapeseed oil as a process additive in compositions, intended for the manufacture of soles for winter footwear having an increased coefficient of friction to icy surfaces. The tribological tests based on the coefficient of friction evaluated the adhesion of the composites to the icy surfaces at different temperatures. The complex evaluation of developed composites revealed those containing microcrystalline cellulose and biogenic amorphous silica at a 1:1 ratio as the most suitable for making footwear soles because of the best combination of physicо-mechanical properties and coefficient of friction.

关键词： Elastomer Composite Epoxidized Natural Rubber Biogenic Amorphous Silica Microcrystalline Cellulose Tribological Measurements

Conversion of Malaysian low-rank coal to mesoporous activated carbon:Structure characterization and adsorption properties

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Chinese Journal of Chemical Engineering 2019年第7期27卷 1716-1727页

作者： Ali H.Jawad Khudzir Ismail Mohd Azlan Mohd Ishak lee D. Wilson Faculty of Applied Sciences Universiti Teknologi MARA40450 Shah AlamSelangorMalaysia Faculty of Applied Sciences Universiti Teknologi MARA02600 ArauPerlisMalaysia Department of Chemistry University of SaskatchewanSaskatoonSaskatchewan S7N 5C9Canada

Malaysian Selantik low-rank coal(SC)was used as a precursor to prepare a form of mesoporous activated carbon(SC-AC)with greater surface area(SA)via a microwave induced KOH-activation *** characteristics of the SC and SC-AC were evaluated by the iodine number,ash content,bulk density,and moisture content The structure and surface characterization was carried out using pore structure analysis(BET),scanning electron microscopy with energy dispersive X-ray spectroscopy(SEM-EDX),X-ray diffraction(XRD),Fourier Transform Infrared(FTIR),elemental analysis(CHNS),thermogravimetric analysis(TGA),and determination of the point of zero charge(pH(PZC)).These results signify a mesoporous structure of SC-AC with an increase of ca.1160 times(BET SA=1094.3 m^2·g^-1)as compared with raw SC without activation(BET SA=1.23 m^2·g^-1).The adsorptive properties of the SC-AC with methylene blue(MB)was carried out at variable adsorbent dose(0.2-1.6 g·L^-1),solution pH(2-12),initial MB concentrations(25-400 mg·L^-1),and contact time(0-290 min)using batch mode *** kinetic profiles follow pseudo-second order kinetics and the equilibrium uptake of MB conforms to the Langmuir model with a maximum monolayer adsorption capacity of 491.7 mg g^-1 at 303 *** functions revealed a spontaneous endothermic adsorption *** mechanism of adsorption included mainly electrostatic attractions,hydrogen bonding interaction,andπ-πstacking *** work shows that Malaysian Selantik low-rank coal is a promising precursor for the production of low-cost and efficient mesoporous activated carbon with substantive surface area.

关键词： Coal Activated carbon Mesoporous material KOH activation Microwave irradiation Methylene blue