High-temperature compression behavior of W-10wt.%Cu composite

Lin, D.,Han, J.S.,Kwon, Y.S.,Ha, S.,Bollina, R.,Park, S.J. MPR Pub. Services 2015 INTERNATIONAL JOURNAL OF REFRACTORY METALS AND HAR Vol.53 No.2

Hot deformation behavior of tungsten-copper (W-Cu) composite at elevated temperature was investigated by hot-compression testing using a Gleeble 3500 thermo-mechanical simulator. W-10%Cu composite was fabricated by copper infiltration on porous tungsten skeleton (CIT) method. The porous tungsten skeleton was prepared by powder injection molding (PIM) process using tungsten powders and wax-polymer binder system. The hot deformation equations for W-10%Cu composite were determined through strain-stress relations at elevated temperatures, where the strain rate is related to static stress, deformation temperature and activation energy. The effects of deformation temperature and strain rate on the mechanical properties of W-10wt.%Cu composite were investigated through flow strain-stress curves at elevated temperatures and its microstructures before and after deformation.

Preparation of Ti-6Al-4V feedstock for titanium powder injection molding

Lin, D.,Chung, S. T.,Kwon, Y. S.,Park, S. J. Springer Science + Business Media 2016 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.30 No.4

<P>Titanium powder injection molding (Ti-PIM), combining the advantages of both powder metallurgy and plastic injection molding, is an effective manufacturing technology for a near net shape production of titanium parts. In this work, titanium feedstock was fabricated by mixing the pre-alloyed Ti-6Al-4V powder with a wax-polymer binder system after determining their critical solid loading percentage. The rheological and binder decomposition behaviors of prepared feedstock were investigated. The results showed that the feedstock had a critical solid loading of 71 vol. % and the flow activation energy for fabricated feedstock was 64 kJ/mol. The binders were decomposed with two sigmoids functions, where the activation energies for the first and second sigmoid decomposition were 68 kJ/mol and 224 kJ/mol, respectively. The results indicated that the Ti-6Al-4V feedstock was well prepared and would provide good rheological and thermal decomposition behaviors for injection molding and thermal debinding process in Ti-PIM.</P>

Uppsala Consensus Statement on Environmental Contaminants and the Global Obesity Epidemic

Lind, Lars,Lind, P. Monica,Lejonklou, Margareta H.,Dunder, Linda,Bergman, Å,ke,Guerrero-Bosagna, Carlos,Lampa, Erik,Lee, Hong Kyu,Legler, Juliette,Nadal, Angel,Pak, Youngmi Kim,Phipps, Richard P. National Institute of Environmental Health Science 2016 Environmental health perspectives Vol.124 No.5

<P>Summary: From the lectures presented at the 2nd International Workshop on Obesity and Environmental Contaminants, which was held in Uppsala, Sweden, on 8–9 October 2015, it became evident that the findings from numerous animal and epidemiological studies are consistent with the hypothesis that environmental contaminants could contribute to the global obesity epidemic. To increase awareness of this important issue among scientists, regulatory agencies, politicians, chemical industry management, and the general public, the authors summarize compelling scientific evidence that supports the hypothesis and discuss actions that could restrict the possible harmful effects of environmental contaminants on obesity.</P>

Are Persistent Organic Pollutants Linked to Lipid Abnormalities, Atherosclerosis and Cardiovascular Disease? A Review

P. Monica Lind,Lars Lind 한국지질동맥경화학회 2020 지질·동맥경화학회지 Vol.9 No.3

The term persistent organic pollutants (POPs) denotes chemicals with known or suspected adverse health effects in animals or humans and with chemical properties that make them accumulate in the environment, including animals or humans. Lipid-soluble POPs, like dioxins, polychlorinated biphenyls (PCBs) and organochlorine pesticides are transported by lipoproteins and accumulate in adipose tissue. High levels of these compounds in the circulation have been associated with elevated cholesterol and triglycerides in cross-sectional studies and with an increase in mainly low-density lipoprotein cholesterol in a longitudinal study. Also, non-lipid-soluble POPs, such as perfluoroalkyl substances (PFASs) compounds have been associated with increased total cholesterol levels. Carotid artery atherosclerosis has been related to elevated levels of mainly highly chlorinated PCBs and to highly fluorinated PFASs, but in this case only in women. Both cross-sectional and prospective studies have shown dioxins, PCBs, as well as PFASs to be linked to cardiovascular disease (CVD) and mortality. In conclusion, as highlighted in this review, several lines of evidence support the view that POPs of different chemical classes could be linked to lipid abnormalities, carotid atherosclerosis and overt CVD like myocardial infarction and stroke.

Effects of abiotic stressors on kelp early life-history stages

Lind, Alyssa C.,Konar, Brenda The Korean Society of Phycology 2017 ALGAE Vol.32 No.3

Kelp forests and the many vital ecosystem services they provide are threatened as the severity of climate change and other anthropogenic stressors continues to mount. Particularly in the North Pacific, sea surface temperature is warming and glacial melt is decreasing salinity. This study explored the resiliency of early life-history stages of these foundation species through a factorial laboratory experiment. The effects of rising sea surface temperature under low salinity conditions on kelp spore settlement and initial gametophyte growth in Eualaria fistulosa, Nereocystis luetkeana, and Saccharina latissima were investigated. Decreased settlement and growth were observed in these species at elevated temperatures and at low salinity. Eualaria fistulosa spores and gametophytes were the most negatively impacted, compared to the more widely distributed N. luetkeana and S. latissima. These results suggest that N. luetkeana and S. latissima could potentially outperform E. fistulosa under projected conditions. However, despite decreased performance among all species, our findings indicate that these species are largely resilient to temperature changes when exposed to a low salinity, even when the temperature changes are immediate and extreme. By exploring how early life-history stages of several key kelp species are impacted by dual stressors, this research enhances our understanding of how kelp forests will respond to projected and extreme changes in temperature when already stressed by low salinity.

FUNCTIONAL MODELLING FOR FAULT DIAGNOSIS AND ITS APPLICATION FOR NPP

Lind, Morten,Zhang, Xinxin Korean Nuclear Society 2014 Nuclear Engineering and Technology Vol.46 No.6

The paper presents functional modelling and its application for diagnosis in nuclear power plants. Functional modelling is defined and its relevance for coping with the complexity of diagnosis in large scale systems like nuclear plants is explained. The diagnosis task is analyzed and it is demonstrated that the levels of abstraction in models for diagnosis must reflect plant knowledge about goals and functions which is represented in functional modelling. Multilevel flow modelling (MFM), which is a method for functional modelling, is introduced briefly and illustrated with a cooling system example. The use of MFM for reasoning about causes and consequences is explained in detail and demonstrated using the reasoning tool, the MFMSuite. MFM applications in nuclear power systems are described by two examples: a PWR; and an FBR reactor. The PWR example show how MFM can be used to model and reason about operating modes. The FBR example illustrates how the modelling development effort can be managed by proper strategies including decomposition and reuse.

AMERICA'S PERMANENT PARTIES : THE CONTINUITIES IN U.S. POLITICS, 1776-2000

Lind, Michael 한국아메리카학회 1998 美國學論集 Vol.30 No.2

IS JAPAN BACK? MEASURING NATIONALISM AND MILITARY ASSERTIVENESS IN ASIA'S OTHER GREAT POWER

Lind Jennifer,Ueki Chikako Kawakatsu 동아시아연구원 2021 Journal of East Asian Studies Vol.21 No.3

Observers of East Asia frequently claim that Japanese nationalism is on the rise, and that Tokyo is abandoning its longtime military restraint. To determine whether these trends are indeed occurring, we define and measure Japan's nationalism and military assertiveness; we measure whether they are rising relative to Japan in the past, and relative to seven other countries.Drawing from social identity theory, we distinguish between “nationalism” and a more benign “patriotism.” We find in Japan (1) strong patriotism that is stable over time, and no evidence of rising nationalism. Furthermore we find that (2) military assertiveness remains generally low, but it has risen in terms of decreased institutional constraints and peacekeeping activities. Our findings have important implications for academic debates about nationalism and Japanese security policy, and for policy debates about a nascent balancing effort against China.

Moral Competence and Public Value

Georg Lind 한국공공가치학회 2021 공공가치연구 Vol.1 No.1

Moral competence and public value are closely related. The core public value is democracy, which is actually a bundle of the four moral principles: freedom, justice, truth, and cooperation. Moral competence is the ability to apply these principles, that is, the ability to solve conflicts and problems inevitably resulting from applying these principles to real-life decision-making. As empirical and experimental evidence show, the moral principles of democracy are shared by most, if not all, people. However, most people do not have the opportunity to develop a minimum moral competence. Thus they cannot behave according to their moral principles without requiring (expensive) external control. Therefore, society must spend much money on their control. If society would foster the moral competence of all citizens, it could save much expenditure. Today, we can foster moral competence very effectively with methods like the Konstanz Method of Dilemma-Discussion (KMDD). The KMDD can be used with almost all age groups (3rd grade upwards). It is not only very effective but requires little time and money and no change of the curriculum. However, it is only effective if it is used by well trained and certified KMDD-Teachers. In my presentation I will explain in detail the new concept of moral competence, how it can be made visible through the experimentally designed Moral Competence Test (MCT), how relevant moral competence is for various kinds of behavior, and how it can be effectively fostered by the KMDD, which is used in various educational settings like grade school, secondary school, university, professional training, army academy, prison, and theater.

Beware the Tomb of the Known Soldier

Jennifer Lind 동아시아재단 2013 Global Asia Vol.8 No.1