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国际图书馆学研究:亚洲前景

国外社会科学 1997年第1期 88-89页

作者：Ｒ．Ｄ．斯图埃特

国际图书馆学研究：亚洲前景〔泰〕Ｒ．Ｄ．斯图埃特亚洲是世界上发展最快的地区之一，伴随着经济的发展和人口的增长，亚洲国家正在稳步进入信息时代。大多数国家，包括那些不太发达的国家已意识到信息的价值，并且着手考虑制定教育和... 详细信息

国际图书馆学研究：亚洲前景〔泰〕Ｒ．Ｄ．斯图埃特亚洲是世界上发展最快的地区之一，伴随着经济的发展和人口的增长，亚洲国家正在稳步进入信息时代。大多数国家，包括那些不太发达的国家已意识到信息的价值，并且着手考虑制定教育和更广泛的信息政策。这种发展使亚洲的...

关键词：图书馆学研究斯图信息时代亚洲

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谁之罪？

太平洋十年涛动对全球地表气温变化的影响足迹

2019年

作者： (俄)赫尔岑

来源：南通市图书馆图书评论

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Science Bulletin 2024年第4期69卷 445-448页

作者：梁莉莉 Alan d.Ziegler 陈德亮 Philippe Ciais 李肇新梁时婧王大山徐荣嵘曾振中 School of Environmental Science and Engineering Southern University of Science and TechnologyShenzhen 518055China SUSTech Energy Institute for Carbon Neutrality Southern University of Science and TechnologyShenzhen 518055China Faculty of Fisheries Technology and Aquatic Resources Mae Jo UniversityChiang Mai 50000Thailand Regional Climate Group Department of Earth SciencesUniversity of GothenburgGothenburg 40530Sweden Laboratoire des Sciences du Climat et de l’Environnement UniversitéParis-SaclayGif-sur-Yvette 91191France Laboratoire de Météorologie dynamique Centre national de la recherche scientifiqueSorbonne UniversitéÉcole Normale SupérieureÉcole PolytechniqueParis 75000France Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China

Sea surface temperature modes have been found to modulate anthropogenic global warming rates on annual and decadal timescales,sometimes leading to periods of“slowdown”despite increasing greenhouse gas emissions^([1]).

关键词：太平洋十年涛动地表气温 greenhouse

Carbene chemistry for unnatural biosynthesis

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Science China(Life Sciences) 2024年第1期67卷 204-207页

作者： Jing Huang Jay d.Keasling department of Chemical and Biomolecular Engineering University of CaliforniaBerkeley 94720USA Joint BioEnergy Institute Lawrence Berkeley National LaboratoryEmeryville 94608USA Biological Systems and Engineering division Lawrence Berkeley National LaboratoryBerkeley 94720USA Novo Nordisk Foundation Center for Biosustainability Technical University of DenmarkKongens Lyngby 2800Denmark department of Bioengineering University of CaliforniaBerkeley 94720USA Synthetic Biochemistry Center Institute for Synthetic BiologyShenzhen Institutes for Advanced TechnologiesShenzhen 518055China

Previously,chemists working in synthesis were jealous of biologists since the enzymes found in nature usually exhibited great catalytic properties(e.g.,high catalytic efficiency,excellent selectivity such as substrate selectivity,regioselectivity and stereoselectivity).However,biological systems lack many counterparts of reactions widely used in chemical synthesis.

关键词： synthesis selectivity catalytic

Numerical calculation of Z-scan measurements for nonlinear media with large phase shift

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Optoelectronics Letters 2024年第3期20卷 177-182页

作者： M.d.Zidan A.Allahham department of Physics Atomic Energy Commission of SyriaP.O.Box 6091DamascusSyria

We have reported the characteristics of a Z-scan for the poly(azaneylylidene-acylene)(dAZA) polymer, as nonlinear medium with a large nonlinear phase shift using continuous-wave(CW) laser beam. It has been verified that the Fresnel diffraction model is applicable for analyses of Z-scan measurements with dAZA polymer at high laser power. It was found that Z-scan curves with peak-to-valley features appear as the applied light intensity increases in the case of a large nonlinear phase shift. The Z-scan experiments were carried out using a CW laser to verify the theoretical calculations in the case of a large nonlinear phase shift model. Our results show good agreements between the experimental data and the proposed theoretical models.

关键词： nonlinear phase media

Ion heat transport in electron cyclotron resonance heated L-mode plasma on the T-10 tokamak

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Plasma Science and Technology 2024年第4期26卷 52-60页

作者： V.A.KRUPIN M.R.NURGALIEV A.R.NEMETS I.A.ZEMTSOV S.d.SUNTSOV T.B.MYALTON d.S.SERGEEV N.A.SOLOVEV d.V.SARYCHEV d.V.RYJAKOV S.N.TUGARINOV N.N.NAUMENKO National Research Centre“Kurchatov Institute” Moscow 123182Russia Bauman Moscow State Technical University Moscow 105005Russia Institution“Project Center ITER” Moscow 123098Russia JSC“SOLAR” Minsk 220034Belarus

Anomalous ion heat transport is analyzed in the T-10 tokamak plasma heated with electron cyclotron resonance heating(ECRH) in second-harmonic extra-ordinary mode. Predictive modeling with empirical scaling for Ohmical heat conductivity shows that in ECRH plasmas the calculated ion temperature could be overestimated, so an increase of anomalous ion heat transport is required. To study this effect two scans are presented: over the EC resonance position and over the ECRH power. The EC resonance position varies from the high-field side to the low-field side by variation of the toroidal magnetic field. The scan over the heating power is presented with on-axis and mixed ECRH regimes. discharges with high anomalous ion heat transport are obtained in all considered regimes. In these discharges the power balance ion heat conductivity exceeds the neoclassical level by up to 10 times. The high ion heat transport regimes are distinguished by three parameters: the ratio Te/Ti, the normalized electron density gradient R/■, and the ion–ion collisionality νii~*. The combination of high Te/Ti, high νii~*, and R/■=6-10 results in values of normalized anomalous ion heat fluxes up to 10 times higher than in the low transport scenario.

关键词： tokamak L-mode electron cyclotron resonance heating ion heat transport

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答复d．布鲁尔的《反拉图尔论》

世界哲学 2008年第4期 71-81页

作者： B．拉图尔[法] 张敦敏(译) 不详中国社会科学院哲学研究所

本文是拉图尔就布鲁尔的批评(参见本刊今年第3期)作出的回应。他强调科学实践是主客体区分不发生作用的唯一领域,并反驳了布鲁尔对他混淆了自然与关于自然的信念或说明之间的区别的批评,指出这种区别仿佛是割断本想连接在一起的东西,即... 详细信息

本文是拉图尔就布鲁尔的批评(参见本刊今年第3期)作出的回应。他强调科学实践是主客体区分不发生作用的唯一领域,并反驳了布鲁尔对他混淆了自然与关于自然的信念或说明之间的区别的批评,指出这种区别仿佛是割断本想连接在一起的东西,即在原本为一个整体的树干中插入楔子,然后再把它们粘合起来,从而给联系制造了麻烦,而这也就是现代主义哲学难题的根源所在。拉图尔认为,布鲁尔等人没有资格对科学作出评价,他的强纲领已经变成了科学元研究的一个障碍。

关键词：知识社会学科学元研究科学大战自发自我指涉自成一格的

On the calibration of a shear stress criterion for rock joints to represent the full stress-strain profile

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第2期16卷 379-392页

作者： Akram deiminiat Jonathan d.Aubertin Yannic Ethier department of Construction Engineering École de Technologie Supérieure(ÉTS)MontréalCanada

Conventional numerical solutions developed to describe the geomechanical behavior of rock interfaces subjected to differential load emphasize peak and residual shear *** detailed analysis of preand post-peak shear stress-displacement behavior is central to various time-dependent and dynamic rock mechanic problems such as rockbursts and structural instabilities in highly stressed *** complete stress-displacement surface(CSdS)model was developed to describe analytically the pre-and post-peak behavior of rock interfaces under differential *** formulations of the CSdS model required extensive curve-fitting iterations which limited its practical applicability and transparent integration into engineering *** present work proposes modifications to the CSdS model aimed at developing a comprehensive and modern calibration protocol to describe the complete shear stressdisplacement behavior of rock interfaces under differential *** proposed update to the CSdS model incorporates the concept of mobilized shear strength to enhance the post-peak ***’s concepts of joint roughness coefficient(JRC)and joint compressive strength(JCS)are incorporated to facilitate empirical estimations for peak shear stress and normal closure ***/uniaxial compression test and direct shear test results are used to validate the updated model and exemplify the proposed calibration *** results illustrate that the revised model successfully predicts the post-peak and complete axial stressestrain and shear stressedisplacement curves for rock joints.

关键词： Full shear profile Post-peak shear behavior Rock joint Joint roughness coefficient(JRC) Axial stress-strain curve

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恶性肿瘤的药物治疗第4版 4版