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School,Museum and University:A New Synergy in Science Education

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地学前缘 2009年第S1期16卷 118-119页

作者： Bruno Filipe C.B.Silva ribeiro A.Neves j.Cascalho r.Barata T.Antunes F.Serralheiro Department of Mineralogy and Geology National Natural History Museum Department of Botany National Natural History Museum Department of Zoology and Anthropology National Natural History Museum

In the last couple of years the Museum developed a project financed by the National Agency for Culture and Technology in partnership with four schools from *** guidelines of this project were the climate change and its influence on human lives in our society and on other living beings."Changing climate, changing lives",our project,evolved 8 months work of about 150 high school grade students,in which

关键词： climate change school university museum science education

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Superconductivity well above room temperature incompressed MgH6

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Frontiers of physics 2016年第6期11卷 103-107页

作者： r. Szczesniaki A. P. Durajski Institute of Physics Jan Dtugosz University Ave. Armii Krajowej 13/15 42-200 Czestochowa Poland Institute of Physics Czestoehowa University of Technology Ave. Arrnii Krajowej 19 42-200 Czestochowa Poland

It has been suggested that hydrogen-rich systems at high pressure may exhibit notably high super-conducting transition temperatures. One of the more interesting theoretical predictions was that hydrogen sulfide can be metallized and the high-temperature superconducting state can be induced. A record critical temperature (203 K) was later confirmed for H3S in an experiment. In this paper, we investigated, within the framework of the Eliashberg formalism, the properties of compressed MgH6, which is expected to be a very good candidate for room-temperature superconductivity. This applies particularly to the pressure range from 300 to 400 GPa, where the transition temperature is close to 400 K. Moreover, the estimated thermodynamic properties and the resulting dimensionless ratios exceed the predictions of the Bardeena€“Coopera€“Schrieffer theory. This behavior is attributed to the strong electrona€“phonon coupling and retardation effects existing in hydrogen-dominated materials under high pressure.

关键词： superconductors hydrogen-rich compounds high pressure thermodynamic properties 74.20.Fg 74.25.Bt 74.62.Fj

Molecularly defined adult-type hypolactasia among working age people with reference to milk consumption and gastrointestinal symptoms

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World journal of Gastroenterology 2007年第8期13卷 1230-1235页

作者： Sari r Anthoni Heli A rasinper Antti j Kotamies Hanna A Komu Harri K Pihlajamki Kaija-Leena Kolho Irma E jrvel Hospital for Children and Adolescents University of Helsinki Finland Department of Medical Genetics University of Helsinki Finland Helsinki Centre of Economic research Helsinki Finland Central Military Hospital Helsinki Finland Helsinki University Central Hospital Laboratory of Molecular Genetics Helsinki Finland

AIM: To study milk consumption and subjective milk- related symptoms in adults genotyped for adult-type hypolactasia. METHODS: A total of 1900 Finnish adults were genotyped for the C/T-13910 variant of adult-type hypolactasia and filled in a structured questionnaire concerning milk consumption and gastrointestinal problems. rESULTS: The C/C-13910 genotype of adult-type hypolactasia was present in 18% of the study population. The prevalence of the C/C-13910 genotype was higher among subjects who were undergoing investigations because of abdominal symptoms (24%, P rank less milk than subjects with either the C/T-13910 or the T/T-13910 genotype of lactase persistence (18% vs 38%; 18% vs 36%, P jects with the C/C-13910 genotype had experienced more gastrointestinal symptoms (84%) during the preceding three-month period than those with the C/T-13910 (79%, P r the T/T-13910 genotype (78 %, P jects with the C/C-13910 genotype consumed milk and reported no symptoms from ***: Gastrointestinal symptoms are more common among adults with the C/C-13910 genotype of adult-type hypolactasia than in those with genotypes of lactase persistence.

关键词： Lactase persistence Lactose malabsorption C/T-13910 genotype Abdominal symptoms Milk consumption

Longitudinal Structure Function FL from Charm Structure Function F2^c

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Communications in Theoretical Physics 2013年第4期59卷 462-466页

作者： B. rezaei G.r. Boroun Physics Department Razi University

We predict the effect of the charm structure function on the longitudinal structure function at small x. In NLO analysis we find that the hard Pomeron behavior gives a good description of FL and Fk^c （k = 2, L） at small x values. We conclude that a direct relation between FL∝ F2^c would provide useful information on how to measure longitudinal structure function at high 0,2 values. Having checked that this model gives a good description of the data, when compared with other models.

关键词： charm structure function gluon distribution quantum chromodynamics small-x

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A Novel Cluster Analysis-Based Crop Dataset recommendation Method in Precision Farming

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Computer Systems Science & Engineering 2023年第9期46卷 3239-3260页

作者： K.r.Naveen Kumar Husam Lahza B.r.Sreenivasa Tawfeeq Shawly Ahmed A.Alsheikhy H.Arunkumar C.r.Nirmala Department of Computer Science&Engineering Bapuji Institute of Engineering&TechnologyDavangereKarnatakaIndia Department of Information Technology Faculty of Computing and Information TechnologyKing Abdulaziz UniversityJeddahSaudi Arabia Department of Information Science&Engineering Bapuji Institute of Engineering&TechnologyDavangereKarnatakaIndia Department of Electrical Engineering Faculty of Engineering at RabighKing Abdulaziz UniversityJeddahSaudi Arabia Department of Electrical Engineering College of EngineeringNorthern Border UniversityArarSaudi Arabia

Data mining and analytics involve inspecting and modeling large pre-existing datasets to discover decision-making *** agriculture uses datamining to advance agricultural *** farmers aren’t getting the most out of their land because they don’t use precision *** harvest crops without a well-planned recommendation *** crop production is calculated by combining environmental conditions and management behavior,yielding numerical and categorical *** existing research still needs to address data preprocessing and crop categorization/***,statistical analysis receives less attention,despite producing more accurate and valid *** study was conducted on a dataset about Karnataka state,India,with crops of eight parameters taken into account,namely the minimum amount of fertilizers required,such as nitrogen,phosphorus,potassium,and pH *** research considers rainfall,season,soil type,and temperature parameters to provide precise cultivation recommendations for high *** presented algorithm converts discrete numerals to factors first,then reduces ***,the algorithm generates six datasets,two fromCase-1(dataset withmany numeric variables),two from Case-2(dataset with many categorical variables),and one from Case-3(dataset with reduced factor variables).Finally,the algorithm outputs a class membership allocation based on an extended version of the K-means partitioning method with lambda *** presented work produces mixed-type datasets with precisely categorized crops by organizing data based on environmental conditions,soil nutrients,and ***,the prepared dataset solves the classification problem,leading to a model evaluation that selects the best dataset for precise crop prediction.

关键词： Data mining crop prediction k-prototypes k-means cluster machine learning

Status of flood vulnerability area in an ungauged basin,southwest Nigeria

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International journal of Agricultural and Biological Engineering 2013年第2期6卷 28-36页

作者： A.Sobowale j.A.Oyedepo south west regional center for national water resources capacity building network federal university of agriculturep.m.2.2240abeokuta 110001nigeria institute for food security environmental resources and agricultural researchfederal university of agriculturep.m.2.2240abeokuta 110001nigeria

Many rivers in Nigeria had been ungauged in the last three decades;this worrisome scenario has impacted negatively on the livelihood of people who live in flood *** general lack of up to date streamflow data has made river basin management problematic especially in the area of flood risk management and the development of a real time flood warning *** studies were carried out in the Ogun river Basin in the southwest Nigeria using synthetic data generated by rainfall-runoff Modeling using a combination of the Natural resources Conservation Service(NrCS)curve number model and digital terrain modeling using ArcGIS®9.3 software to identify vulnerable areas in relation to synthesized flood waves generated from the basin,extent of inundation and ranking of the flash points that was equally done using proximity to hazard source as a *** total area in the basin covered by fresh water swamps,salt marsh,and tidal flats at the lower course of Ogun river is 49 km2,while the spatial extent of the entire wetland is 556 km2 *** a peak flood volume of 4270 million m3 generated in September is routed into the fresh water swamp,about 33.4 m of flood depth was left unaccommodated,which will cause inundation of the entire flood plain and severe damage on its *** 1.4 million inhabitants were identified to be at risk in the *** the entire wetland was considered,the flood wave was reduced to an average depth of 8.5 m which is still capable of causing grave damages in the remaining parts of the flood *** flood wave was found to have a residence time of about 45 *** recommendations were given for practical adaptations.

关键词： flood modeling vulnerability management basin Nigeria

Solid-state batteries:from 'all-solid' to 'almost-solid'

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National Science review 2023年第6期10卷 57-59页

作者： Hanyu Huo jürgen janek Institute of Physical Chemistry Justus Liebig University Giessen Center for Materials research (ZfM) Justus Liebig University Giessen

Lithium-ion batteries (LIBs) have been the undisputed leading technology in electrochemical energy storage since they were commercialized in *** then,the mass manufacturing of LIBs has reached maturity,and we have also seen the realization of high energy density,long cycling stability and low *** technology enabled the huge success of mobile consumer electronics,with its usage in electric vehicles and other advanced *** to the use of organic solvents for the ele ctrolytes,LIBs are sensitive to high temperatures,lose performance at low temperatures and show inherent safety risks with increasing energy density (Fig.1a).As the performance of current LIBs is also limited,next-generation battery technologies are being intensively investigated,especially given the ever-increasing demand for high energy density as well as high power density.

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G.W.S.人造上的研究

农业机械学报 1991年第1期22卷 26-32页

作者：陈翠英 r.H.麦克米伦 j.r.斯迪尔江苏工学院墨尔本大学

介绍了作者开发的一种人造土。这种人造土由聚醋酸乙烯(P.V.A.)胶(G)、水(W)和硅砂(S)按一定比例混合而成,称为G.W.S.人造土,用以模拟田间土壤供小型土槽用。通过大量的样本试验及试验数据的处理,给出了G.W.S.人造土的成分比例、干燥方... 详细信息

介绍了作者开发的一种人造土。这种人造土由聚醋酸乙烯(P.V.A.)胶(G)、水(W)和硅砂(S)按一定比例混合而成,称为G.W.S.人造土,用以模拟田间土壤供小型土槽用。通过大量的样本试验及试验数据的处理,给出了G.W.S.人造土的成分比例、干燥方式、干燥时间与强度的关系曲线及回归方程,使用者可以根据需要选择使用。

关键词：农业机械试验小土槽人造土

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Keep quiet—how stress regulates hair follicle stem cells

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Signal Transduction and Targeted Therapy 2021年第11期6卷 3161-3162页

作者： Sven r.Quist jennifer Quist Department of Dermatology University HospitalOtto-von-Guericke UniversityMagdeburgGermanyl Dermatology ClinicHelix Medical Excellence CenterMainzGermany

In a recent paper published in Nature,Choi et al.1 demonstrated that corticosterone,the mouse equivalent to human cortisol,controls the activity of hair follicle stem cell(HFCS)quiescence by regulating the gene expression of *** stem cells have the unique ability to repair,generate and maintain tissues throughout their *** cells under autonomous and non-autonomous regulators are located in specific niches where this regulation can be synchronized.2 The hair follicle is a highly interactively regulated mini-organ that enables the study of stem cell functions.

关键词： autonomous hair maintain