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Misconceptions in global reactions and formula writing

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Defence Technology（防务技术） 2016年第5期12卷 419-421页

作者： stig R. JOHANSSON The Swedish Section for Detonics and Combustion Sweden

The frequently used concept of "global reaction" is discussed and the reason for the confusion behind explained. The misconception is cleared by formula writing based on the donor–acceptor(donac) reaction concept and... 详细信息

关键词： Global reaction Donac reactions Formula writing Pyrotechnics Chlorate manufacture

Vapour retarders in wood frame walls and their effect on the drying capability

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Frontiers of Architectural Research 2013年第1期2卷 42-49页

作者： stig Geving Jonas Holme Norwegian University of Science and Technology Trondheim NO-7491 Norway SINTEF Building and Infrastructure Trondheim NO-7465 Norwoy

Wood frame wails typically need a vapour barrier at the warm side to avoid interstitial condensation due to vapour diffusion and air leakages from the interior. A more vapour open material than the traditional vapour barriers, here calted vapour retarder, could allow condensed moisture, buiLt-in-moisture or moisture from minor leakages to dry to the interior in addition to the outward drying. The application of permeable vapour retarders in wood frame wails have been investigated in this study by the use of a hygrothermat simulation tool. A traditional wood frame wail usually has good drying possibilities to the exterior. If a vapour retarder should have an effect on the total drying, it must not be too vapour tight. The purpose of this study was to find some threshold value for the maximum vapour resistance of a vapour retarder--when a requirement is that it should have a relatively large effect of the total drying of the wail. The increased risk for condensation as the vapour resistance decreases has however not been investigated in this study. In general it was found that permeable vapour barriers have retatively littte effect on the total drying of ordinary wood frame waits in a Nordic ctimate.

关键词： Vapour barrier Vapour retarder Wood frame watt Drying Moisture

Electromembrane extraction–Recent trends and where to go

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Journal of Pharmaceutical Analysis 2017年第3期7卷 141-147页

作者： stig Pedersen-Bjergaard Chuixiu Huang Astrid Gjelstad School of Pharmacy University of Oslo Faculty of Health and Medical Sciences School of Pharmaceutical Sciences University of Copenhagen

Electromembrane extraction(EME) is an analytical microextraction technique, where charged analytes(such as drug substances) are extracted from an aqueous sample(such as a biological fluid), through a supported liquid membrane(SLM) comprising a water immiscible organic solvent, and into an aqueous acceptor solution. The driving force for the extraction is an electrical potential(dc) applied across the SLM. In this paper, EME is reviewed. First, the principle for EME is explained with focus on extraction of cationic and anionic analytes, and typical performance data are presented. Second, papers published in 2016 are reviewed and discussed with focus on(a) new SLMs,(b) new support materials for the SLM,(c) new sample additives improving extraction,(d) new technical configurations,(e) improved theoretical understanding, and(f) pharmaceutical new applications. Finally, important future research objectives and directions are defined for further development of EME, with the aim of establishing EME in the toolbox of future analytical laboratories.

关键词： Sample preparation Microextraction Electromembrane extraction

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谈构建风景园林新自然观的重要性

风景园林 2024年第1期31卷 80-88页

作者： [丹麦]斯蒂格·L.安德森贾绿媛(译) 王晞月(校) SLA事务所北京林业大学园林学院

当前人类的发展状态被视为是不可持续的,若不进行相应的调整,局势将难以逆转。为实现这一改变,我们亟须调整对本体论及自然的认知方式。首先,我们需要认识到人类本身就是自然的一部分。其次,我们需要修正对历史经验及自然观的理解。实... 详细信息

当前人类的发展状态被视为是不可持续的,若不进行相应的调整,局势将难以逆转。为实现这一改变,我们亟须调整对本体论及自然的认知方式。首先,我们需要认识到人类本身就是自然的一部分。其次,我们需要修正对历史经验及自然观的理解。实现社会的可持续发展,不能仅依靠科学的论证,而要接纳自然的美学。这是一个感性的认知过程,并无科学的标准可言,需要通过人类自然体验的不断重复来实现。自然对人类的影响深远且意义重大,然而却常被我们忽视。人类接触自然、感受自然的好处众多,可简要概括为:提升人多角度理解世界的能力,从而让我们理解自己在自然中的位置以及与自然的关系。尽管自然危机日益严峻、生物多样性持续降低,当人们采取的行动都收效甚微,便更倾向于接受“事情本就是这样”,而失去了持续行动的意愿。然而,当我们视人类为自然的一部分,通过自然美学的感知,我们可以认识到人类的凝聚力,从而获得行动的动力。这意味着我们要接纳自然本真的面貌,包括其中不尽美观的、不尽宜人的部分,以及由人类农业生产和工业活动所带来的荒废的景观。通过自然的美学感知,我们有机会构建出一个与生物共存的绿色世界。作为风景园林设计师,我们的职责并非创造出一个有固定范式的成品,而更多在于为场地未来不可预测的且不受束缚的发展进程构建一套具有适应性的框架。自然的体验是个性化的、无法估量的,但也是可以与他人共享的,这些体验对于我们个人的福祉和人类的未来都至关重要。

关键词：美学新自然哲学气候适应绿色基础设施

基于旅游者视角的世界遗产文化与自然融合价值认知研究——以桂林喀斯特为例

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浙江大学学报（人文社会科学版） 2024年第1期54卷 112-128页

作者：张柔然 [英]王家宁玛丽·路易斯·斯蒂格·索伦森剑桥大学麦克唐纳考古研究所剑桥CB23ER 深圳大学建筑与城市规划学院广东深圳518060 约克大学考古系约克YO17EP

现有的世界遗产体系中,遗产的文化和自然融合价值评估标准仍不完善。以遗产思辨研究为分析框架,挖掘多元的利益相关者对融合价值的理解,有助于填补相关评估标准的空白。在中国的文化背景中,桂林山水的自然与文化价值相互融合、相辅相成... 详细信息

现有的世界遗产体系中,遗产的文化和自然融合价值评估标准仍不完善。以遗产思辨研究为分析框架,挖掘多元的利益相关者对融合价值的理解,有助于填补相关评估标准的空白。在中国的文化背景中,桂林山水的自然与文化价值相互融合、相辅相成,游客在游览过程中能够自我理解、阐释和创造桂林山水的文化与自然融合价值。游客不仅是桂林山水文化的体验者,更是其文化价值的创造者。他们的亲身感受与理解,证实并塑造了桂林的自然与文化价值。游客的话语为重新审视遗产的文化与自然价值提供了中国旅游者的智慧,强调在评估遗产价值时应采取更加民主的方式,尊重本土知识,并以文化与自然融合的视角解读遗产价值。确保民众的话语权对于全面理解和阐释遗产价值以及制定更加合理的世界遗产保护、申报和管理策略具有至关重要的意义。

关键词：遗产思辨研究文化与自然融合价值桂林喀斯特话语分析

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Mitigation measures of the electric field in the medium-voltage power module:Effect of voltage types and recommendations for designers

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High Voltage 2021年第5期6卷 836-849页

作者： Zhizhao Huang Cai Chen Yong Kang stig Munk-Nielsen Christian Uhrenfeldt State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and TechnologyWuhanChina Department of Energy Technology Aalborg UniversityAalborgDenmark

In the medium‐voltage silicon carbide device power module,the higher voltage level will induce higher electric field stress in critical internal points such as the edge of the conductor on the direct bonded copper(DBC)*** can lead to partial discharge and subsequently accelerated ageing of the insulating medium in the ***,it is important to reduce the high electric field ***,the related technical methods of electric field control are reviewed and compared by combining the ease of implementation in real power module and the field control *** addition,systematic explanations of the electric field drift and influencing factors of the electric field strength under different voltage types within different module structures are ***,for half‐bridge power modules with different substrates structures,sug-gestions on how to implement non‐linear field‐dependent materials to reduce the electric field strength are given.

关键词： power field measures

Developing a Pedagogy of Education for Sustainable Futures:Experiences and Observations from Danish Preschools

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ECNU Review of Education 2019年第4期2卷 475-496页

作者： stig Brostrom Thorleif Frøkjær Danish School of Education Aarhus UniversityTuborgvej 164Building D1062400 København NVDenmark University College Copenhagen

Purpose:This article aims to outline an approach to education for sustainability based on play and science ***/Approach/Methods:While deviated from traditional academic articles,this article has combined knowledge drawn from various action research projects and personal observations from a number of preschool ***:The article results in the development of an educational method:a scientific playworld to support emergent science and ***/Value:The constructed educational approach is value-oriented and challenges children to strike a balance between pessimism and optimism in addressing major societal themes.

关键词： Action research play playworld science sustainable development

Why Should We Bother on Measurement in Wastewater Treatment Operation?

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Journal of Water Resource and Protection 2016年第11期8卷 982-989页

作者： stig Morling Sweco Environment AB Stockholm Sweden

The question of wastewater treatment and control is reflected from a very specific viewpoint: the low priority given to accurate and useful measurements within wastewater treatment. The matter is discussed from four various perspectives, that may be labelled “Legal understanding”;“Needs for accurate measurement results already in the planning and design stage”;“The measurement problem and human behaviour”;“The understanding of the short term and long term dynamics and changes in pollution and flow loads on a wastewater treatment plant (WWTP)”. All these aspects bring about much improved needs for an accurate and frequent measurement scheme both for pollutants and flows entering a WWTP. The conclusion is stated as follows: A far more and well elaborated on-line measurement system at the plants would become a needed tool for improved water environment protection at lower costs.

关键词： Measurement Legal Issues On-Line Instruments Nitrogen Sludge Systems WWTP (Wastewater Treatment Plant)

Implications of a new, biostratigraphically well-controlled, radio-isotopic age for the lower Telychian Stage of the Llandovery Series （Lower Silurian, Sweden）

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Episodes 2008年第3期31卷 309-314页

作者： stig M. Bergstrom Funda Ozlem Toprak Warren D. Huff Roland Mundil School of Earth Sciences Division of Geological Sciences The Ohio State University 155 S. Oval Mall Columbus Ohio 43210 USA. Department of Geoiogy University of Cincinnati Cincinnati Ohio 45221 USA Berkeley Geochronology Center 2455 Ridge Road Berkeley California 94709 USA.

Radio-isotopic analysis of single zircons from two early Telychian K-bentonites, one of which is among the most widespread Lower Paleozoic volcanic ash falls in north- ern Europe, yields overlapping weighted mean 206pb/238U ages of 438. 7± 1.0 Ma and 437.8 ± 0.5 Ma, respectively. The former age is from zircons of the Osmundsberg K-bentonite from the type locality at Osmundsberget in the Siljan area of central Sweden where it occurs in the lower part of the Spirograptus tur- riculatus Graptolite Zone and in the lower part of the Angochitina longicollis Chitinozoan Zone. Zircons giv- ing the latter age are from a bed previously identified as the Osmundsberg K-bentonite at the Kallholn Quarry in the same area. Based on new biostratigraphic data, the latter bed is now considered to be slightly younger than the Osmundsberg K-bentonite. The dated stratigraphic level of the ash layers is slightly younger than the base of the Telychian Stage and thus represents a minimum age for the Aeronian/Telychian Stage boundary. A U-Pb age of 〉 438 Ma for the base of this stage, however, is older and in conflict with estimates in the most recent compilation of the Silurian time scale. In view of the fact that only three radio-isotopic dates from the entire Llan- dovery have been previously accepted, this new and biostratigraphically exceptionally well-controlled radio-isotopic date fills an important gap in the Lower Silurian geochronology.

关键词：无线电同位素蓝达夫里阶志留纪