Enhanced Reaction Kinetic of Fe3O4-graphite Nanofiber Composite Electrode for Lithium Ion Batteries

Wan Lin Wang,Hal-Bon Gu,박주영 한국전기전자재료학회 2014 Transactions on Electrical and Electronic Material Vol.15 No.6

A Fe3O4-graphite nanofiber composite for use as an anode material was successfully synthesized by calcining Fe2O3and graphite nanofiber (GNF) together in a N2 atmosphere. Using this Fe3O4-GNF composite in a lithium ion batteryresulted in a higher lithium storage capacity than that obtained using Fe3O4-graphite (Fe3O4-G). The Fe3O4-GNF (10wt%) electrode exhibited a higher lithium ion diffusion coefficient (2.29×10-9 cm2 s-1) than did the Fe3O4-G (10%)(3.17×10-10 cm2 s-1). At a current density of 100 mA g-1, the Fe3O4-GNF (10 wt%) anode showed a higher reversiblecapacity (1,031 mAh g-1) than did the Fe3O4-G (10%) anode (799 mAh g-1). Moreover, the Fe3O4GNF electrodes showedgood cycling performance without the addition of a conductive material.

Electrochemical Performance of Lithium Iron Phosphate by Adding Graphite Nanofiber for Lithium Ion Batteries

Wan Lin Wang,구할본,김은미 한국전기전자재료학회 2012 Transactions on Electrical and Electronic Material Vol.13 No.3

Olivine type LiFePO4 cathode material was synthesized by solid-state reaction method including one-step heat treatment. To improve the electrochemical characteristics, graphite nanofiber (GNF) was added into LiFePO4 cathode material. The structure and morphological performance of LiFePO4 were investigated by X-ray diffraction (XRD); and a field emission-scanning electron microscope (FE-SEM). The synthesized LiFePO4 has an olivine structure with no impurity, and the average particle size of LiFePO4 is about 200~300 nm. With graphite nanofiber added, the discharge capacity increased from 113.43 mAh/g to 155.63 mAh/g at a current density of 0.1 mA/cm2. The resistance was also significantly decreased by the added graphite nanofiber.

Structural Conservation and Food Habit-related Liver Expression of Uncoupling Protein 2 Gene in Five Major Chinese Carps

( Wan Qin Liao ),( Xu Fang Liang ),( Lin Wang ),( Ling Fang ),( Xiao Tao Lin ),( Jun Jie Bai ),( Qing Jian ) 생화학분자생물학회 2006 BMB Reports Vol.39 No.4

From Successful Family Planning to the Lowest of Low Fertility Levels: Taiwan’s Dilemma

Wan-I Lin,Shin-Yi Yang 한국사회복지학회 2009 Asian Social Work and Policy Review Vol.3 No.2

Since the implementation of family planning in the 1960s, Taiwan’s fertility rate has rapidlydecreased. This was praised as a family planning achievement. However, in the 21st century Taiwanhas become one of the lowest of low fertility countries like European countries [Kohler, H. P.,Billari, F. C., & Ortega, J. A. (2002). Population and Development Review, 28(4), 641–80]. Thegovernment has begun to worry that these extremely low birthrates will result in rapid populationaging and bring about other negative socio-economic effects. Thus, in its Mega Warmth SocialWelfare Program (MWSWP) of 2006, the Taiwanese government targeted the issue of low birthrates. Based on secondary data analysis, we found that the reasons for rapid decrease in Taiwanesebirthrates are: (i) a declining marriage rate; (ii) later marriage; (iii) changing attitudes towards childbearing; (iv) the burdens of child care; and (v) an increase in female labour participation rates. TheMWSWP includes maternity leave benefits, parental leave benefits, a childcare subsidy system andearly children education and care (ECEC). First, this article presents a chronological understandingof the demography in Taiwan. Second, we attempt to evaluate the reasons contributing to the lowbirthrates. The policy response to this is discussed next. Finally, the article provides a careful conclusion:that the extent to which these policies can significantly stop the population from decliningrequires further observation.

Does Spore Count Matter in Fungal Allergy?: The Role of Allergenic Fungal Species

Wan-Rou Lin,Yi-Hsing Chen,Mey-Fann Lee,Ling-Yi Hsu,Chih-Jen Tien,Feng-Ming Shih,Shih-Ching Hsiao,Pi-Han Wang 대한천식알레르기학회 2016 Allergy, Asthma & Immunology Research Vol.8 No.5

Purpose: Fungi have been known to be important aeroallergens for hundreds of years. Most studies have focused on total fungal concentration; however, the concentration of specific allergenic fungi may be more important on an individual basis. Methods: Ten fungal allergic patients and 2 non-fungal allergic patients were enrolled. The patients with a decrease in physician or patient global assessment by more than 50% of their personal best were considered to have an exacerbation of allergic symptoms and to be in the active stage. Those who maintained their physician and patient global assessment scores at their personal best for more than 3 months were considered to be in the inactive stage. The concentrations of dominant fungi in the patients’ houses and outdoors were measured by direct and viable counts at active and inactive stages. Results: The exacerbation of allergic symptoms was not correlated with total fungal spore concentration or the indoor/outdoor ratio (I/O). Specific fungi, such as Cladosporium oxysporum (C. oxyspurum), C. cladosporioides, and Aspergillus niger (A. niger), were found to be significantly higher concentrations in the active stage than in the inactive stage. Presumed allergenic spore concentration threshold levels were 100 CFU/m3 for C. oxysporum, and 10 CFU/m3 for A. niger, Penicillium brevicompactum and Penicillium oxalicum. Conclusions: The major factor causing exacerbation of allergic symptoms in established fungal allergic patients may be the spore concentration of specific allergenic fungi rather than the total fungal concentration. These results may be useful in making recommendations as regards environmental control for fungal allergic patients.

THE INNATE, ADAPTIVE AND LYMPHOCYTE DEVELOPMENT RELATED GENES EXPRESSION IN THE RED-SPOTTED GROUPER TREATED INJECTED KILLED BACTERIAL VACCINE

Wan Ching Kuo,Han Tzo Lin,Chin Chou Lin,John Han You Lin 한국수산과학회 양식분과 2015 한국수산과학회 양식분과 학술대회 Vol.2015 No.5

A Review on Remarriage in Later Adulthood

Wan I Lin,Yong Deuk Choi,Jin Hee Seomun 한국노인복지학회 2011 International Journal of Welfare for the Aged Vol.24 No.-

In this study, we review global trends of remarriage and meaningfulness of living arrangement in later life. In particular, we also review importance of emotional significance of attachment in old life. In old life, the need to love and be loved is ageless. Many people of all ages yearn for a committed companionship, for the daily connection with a loving partner, and for escaping loneliness. Due to the high rate of divorce in the U.S. and longer expected lifespan, many people face being alone later. The new marriage is structured very differently than the first one. While the first marriage was propelled by a drive to build a future for the new family, later years marriages are focused on ways to preserve what already exists. Younger marriages are future for the new family, later years marriages are focused on ways to preserve what already exists. Younger marriages are future oriented, later years marriages are present oriented. Comparing the later years marriage to the first one is inappropriate and unhelpful. Lack of estate planning can result in a new spouse receiving the assets that could have gone to adult children and grandchildren. In most states, a spouse is entitled to a certain percentage (usually a third) of the other spouse`s assets at death even if the other spouse has provided differently in a will. If you don`t want this to happen, the best way around it for your spouse to waive this right in a pre-nuptial or post-nuptial agreement.

The Coming of an Aged Society in Taiwan: Issues and Policies

Wan-I Lin 한국사회복지학회 2010 Asian Social Work and Policy Review Vol.4 No.3

For most advanced industrialized countries, an aging society has been a national issue since the1970s. However, Taiwan was not aware of this issue until 1993, the year when the old-age populationreached 7.0%. As an aging nation under the definition of the United Nations, the Taiwanesegovernment began to pay more attention to the aging population, and executed several policies inresponse to this demographic transition. First, this article examines Taiwan’s demographic transitionfrom an aging society to an aged society, and its impacts. Second, it demonstrates theresponses of Taiwan to the coming of an aged society and explores crucial issues that Taiwanesesociety is facing.

Reduction of Physical Strength and Enhancement of Anti-Protein and Anti-Lipid Adsorption Abilities of Contact Lenses by Adding 2-Methacryloyloxyethyl Phosphorylcholine

Wan-Hsin Chang,Pei-Yi Liu,Chien-Ju Lu,Dai-En Lin,Min-Hsuan Lin,Yuan-Ting Jiang,Yuan-Hao Howard Hsu 한국고분자학회 2020 Macromolecular Research Vol.28 No.12

Biocompatible 2-methacryloyloxyethyl phosphorylcholine (MPC) can enhance the adsorption of water molecules and is therefore used for manufacturing contact lenses. This study investigated the mechanical strength, anti-protein deposition, and anti-lipid adsorption effects of MPC addition to contact lenses. Experimental contact lenses produced by copolymerizing multiple ratios of MPC to 2-hydroxyethyl methacrylate (HEMA) were analyzed. Atomic force microscopy revealed that MPC addition increased surface roughness. The anti-protein deposition and anti-lipid adsorption effects on poly(HEMA-MPC) polymers of various phosphorylcholine quantities were experimentally confirmed. The water content of the contact lenses was proportional to the MPC content in the polymer. The hydrated PC moiety of MPC drastically altered the network of the poly-HEMA polymer by inserting water molecules, which were trapped in the concave region of the surface. MPC addition had negative effects on all examined strength factors because of structural destabilization of the copolymer through water insertion. The anti-deposition effects of MPC were verified by examining the lysozyme and lipid adsorption abilities of the prepared contact lenses. Our results revealed that MPC enhanced interactions of the poly(HEMA-MPC) copolymer with water molecules; these interactions weakened the mechanical strength of the copolymer but markedly improved the anti-adsorption property of the biomolecules. The optimal proportion of HEMA–MPC for contact lenses is in the range 14.9%-28.5%.

Design and Control of Tapping Mode Atomic Force Microscope in Liquid Utilizing Optical Pickup System

Wan-Lin Hu,Shao-Kang Hung,Li-Chen Fu 제어로봇시스템학회 2008 제어로봇시스템학회 국제학술대회 논문집 Vol.2008 No.10

In this work, we propose a fluid tapping mode atomic force microscopy (AFM) implemented by a DVD pickup head. The use of DVD pickup head minimizes the volume of the hardware system, and thus reduces the measurement error caused by heat expansion. In order to realize the system mentioned above, we design a Q-controller to modulate the interaction force between the tip and the sample. Increasing the quality factor will overcome the problem with high damping ratio in the fluid which makes the probe hard to oscillate. Because of the reduction of the tip-sample force, the sample surface will not be hurt by the tip. Therefore, we can use the AFM to scan soft sample, and obtain more realistic topography. Traditionally, people use proportion-integration controller to control the system. Users need to tune this kind of controller manually, and hence the quality of the scan images is highly related to users’experiences. To overcome this problem, we design an adaptive sliding-mode controller to improve the scanning capability and robustness.For testing the system capability, we will have a series of numerical simulations.