Study on Property of Diamond Mobile Telephone Windows

Liu Tie-Lin,Yang Guang-Sheng,Zhou Jian-Wu,Sun Yi-Ning 한국진공학회(ASCT) 2002 Journal of Korean Vacuum Science & Technology Vol.6 No.2

a-C:H films were coated on windows of mobile telephone by RF plasma chemical vapor deposition equipment made in our company. Thickness of the coatings is about 0.7 micrometers and they have high hardness, low friction coefficient, good adhesion, high optical transparency and chemical inertness. Knoop hardness of the diamond-like carbon films on glass substrate is 2328 ㎏/㎣. The adherence between films and substrate is good and shows to be 69 N by scratching test. The optical performance is improved obviously owing to coat the film on it. The index of the coated windows is 2.5, transmission of visible light is larger than 90%, and transmission of ultraviolet light decreases by 30% and the ultraviolet light can be obstructed obviously. The coated glass also has self-clean effect and decontamination ability. The films have hydrophobic character and the soakage angle of water drop is larger than 90 degrees. The windows have fog-proof ability owing to eliminate the capillary phenomena in the inner surface. The physics and chemical properties of the coated windows are steady. Study indicates that the performance of a-C:H coated mobile phone windows are improved notably on wear-resistance, corrosion-proof and optical properties and it is excellent mobile windows protective coatings.

21세기 해상 실크로드 중국 취안저우 항만활성화에 관한 연구

까오티에린 ( Tie Lin Gao ),고현정 ( Hyun Jeung Ko ) 한국로지스틱스학회 2015 로지스틱스연구 Vol.23 No.4

중국은 일대일로(一대一路) 정책을 추진하고 있는 가운데 21세기 해상 실크로드의 시발점으로 푸젠성의 취안저우 항만을 선정하였다. 하지만 중국 남부의 항만물류 체계는 푸젠성의 성도에 위치한 푸저우항과 대만과 인접한 샤먼항을 중심으로 구축되어 왔다. 따라서 본 연구는 중국의 일대일로 정책 이후 인근 항만과의 치열한 경쟁에 직면하고 있는 취안저우항의 활성화에 영향을 미치는 평가요인들을 파악하고, 세부 평가요소의 우선순위에 따른 경쟁력을 강화하기 위한 항만정책의 방향을 규명하고자 하였다. 이를 위해 항만 경쟁력을 평가하고자 의사결정기법인 Fuzzy-AHP와 ELECTRE III기법을 적용하여 항만규모, 항만입지, 배후경제, 항만비용, 운영관리, 성장잠재력의 6가지 주요 평가요인과 18가지 세부평가 요소에 대한 중요도를 분석하였다. 그 결과 경쟁력 순위는 카오슝항, 샤먼항, 푸저우항, 타이중항, 취안저우항으로 나타났고, 취안저우항은 총체적인 경쟁력 강화 전략이 필요한 것으로 나타났다. 특히 항만 기반시설 확충을 통해 항만비용 절감방안이 필요하며 지속적인 물동량 확보 노력이 필요한 것으로 분석되었다. The port of Quanzhou became the origin of the 21st Century Maritime Silk Road based upon the One Belt and One Road Initiative. The development of port logistics in the south China sea has however been implemented by around the port of Fuzhou and the port of Xiamen since Fuzhou is the capital city of Fujian Sheng and Xiamen is located near to Taiwan. Therefore, this paper aims to evaluate the competitiveness of the port of Quanzhou facing fierce port competition in south Chain sea based on the criteria selected by experts and then suggests the policy direction for promoting port activation. Using Fuzzy-AHP and ELECTRE III, port competitiveness is evaluated according to the total weights obtained based on the different criteria used. The key criteria consisting of 6 factors(size, location, hinterland, costs, operations, and growth potential) that are divided into 18 sub-criteria is identified, and six competing ports are selected with respect to geographical neighboring. The ranking orders by ELECTRE III are as follows: Kaohsiung port, Xiamen port, Fuzhou port, Taichug port, and Quanzhou port. The findings show that the port of Quanzhou appears last in the ordering sequence resulting in the need of integrative approaches to elevate its competitiveness. In particular, it is required to focus on the development of port infrastructure for reducing total logistics costs and to develop marketing strategies for the inducement of firm investment in the port hinterland.

Angelica sinensis Supercritical Fluid CO2 Extract Attenuates D-Galactose-Induced Liver and Kidney Impairment in Mice by Suppressing Oxidative Stress and Inflammation

Zhi-Zhun Mo,Zhi-Xiu Lin,ZiRen Su,Lin Zheng,Hui-Lin Li,JianHui Xie,Yan-Fang Xian,Tie-Gang Yi,Shui-Qing Huang,Jian-Ping Chen 한국식품영양과학회 2018 Journal of medicinal food Vol.21 No.9

Angelica sinensis (AS, Danggui in Chinese) is an important herbal component of various traditional formulae for the management of asthenia and its tonic effects. Although AS has been shown to ameliorate cognitive damage and nerve toxicity in D-galactose (D-gal)-elicited senescent mice brain, its effects on liver and kidney injury have not yet been explored. In this work, mice were subjected to hypodermic injection with D-gal (200 mg/kg) and orally gavaged with AS (20, 40, or 80 mg/kg) once a day for 8 successive weeks. Results revealed that AS significantly improved liver and kidney function as assessed by organ index and functional parameters. In addition, AS pretreatment effectively ameliorated the histological deterioration. AS attenuated the MDA level and markedly enhanced the activities and gene expressions of antioxidative enzymes, namely Cu, Zn-SOD, CAT, and GPx. Furthermore, AS markedly inhibited the D-gal-mediated increment of expressions of inflammatory cytokines iNOS, COX-2, IκBα, p-IκBα, and p65 and promoted the IκBα expression level in both hepatic and renal tissues. In sum, AS pretreatment could effectively guard the liver and kidney of mice from D-gal-induced injury, and the underlying mechanism was deemed to be intimately related to attenuating oxidative response and inflammatory stress.

Research on flexible dynamics of a 6-DOF industrial robot and residual vibration control with a pre-adaptive input shaper

Tie Zhang,Kangyu Lin,Aimin Zhang 대한기계학회 2019 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.33 No.4

The residual vibration caused by joint flexibility tends to be nonlinear and time-varying due to the complicated dynamics characteristics of 6-DOF industrial robot. To address the time-varying residual vibration problem, this paper proposes a pre-adaptive input shaping method. By simplifying the 6-DOF industrial robot standard flexible dynamics equation, the flexible dynamical parameters can be identified without additional joint encoders or other measuring instrument, while the natural frequency of each joint can also be calculated from the identified dynamical parameters. Then by setting the calculated natural frequency as the initial condition, an iterative learning scheme based on the secant method can be applied to obtain a better natural frequency estimate. Finally, using the iteration results, the input shaper’s parameters can be updated, which makes the shaper adapt to the variation of system parameters. The results of model validation show that the simplified dynamic model can reflect the robot dynamic characteristics accurately. The vibration experimental results demonstrate the effectiveness of the proposed pre-adaptive input shaper in suppressing the residual vibration.

An Improved RAHP/DEA Method and the Application of the Physical Education Teaching Quality Assessment

Hao Lin,Tie Ru 보안공학연구지원센터 2015 International Journal of u- and e- Service, Scienc Vol.8 No.3

The teaching quality assessment of physical education for the undergraduates has a very important role for the development of the college physical education teaching. In the age of information, we can improve effectively the speed and accuracy of the assessment through using rationally the computer technology. The AHP method and the DEA method are two kinds of evaluation methods which are used widely by the scholars. However, whether we use AHP or DEA, there are some defects on the using and scope. In order to overcome these shortcomings, we propose the RAHP/DEA method. This method combines the advantages of the RAHP method and the DEA methods. And we enlarge the range of use. Finally, in the computer simulation experiment, we adopt the method to evaluate the teaching quality of college physical education. The experimental results verify the rationality of the project evaluation and the decision making process. This shows that the evaluation system and the evaluation method meet the decision making ideas and the practical requirements.

The TOP-SCOPE Survey of <i>Planck</i> Galactic Cold Clumps: Survey Overview and Results of an Exemplar Source, PGCC G26.53+0.17

Liu, Tie,Kim, Kee-Tae,Juvela, Mika,Wang, Ke,Tatematsu, Ken’ichi,Francesco, James Di,Liu, Sheng-Yuan,Wu, Yuefang,Thompson, Mark,Fuller, Gary,Eden, David,Li, Di,Ristorcelli, I.,Kang, Sung-ju,Lin, Yuxin Published by the University of Chicago Press for t 2018 The Astrophysical journal Supplement series Vol.234 No.2

<P>The low dust temperatures (< 14 K) of Planck Galactic cold clumps (PGCCs) make them ideal targets to probe the initial conditions and very early phase of star formation. 'TOP-SCOPE' is a joint survey program targeting similar to 2000 PGCCs in J = 1-0 transitions of CO isotopologues and similar to 1000 PGCCs in 850 mu m continuum emission. The objective of the 'TOP-SCOPE' survey and the joint surveys (SMT 10 m, KVN 21 m, and NRO 45 m) is to statistically study the initial conditions occurring during star formation and the evolution of molecular clouds, across a wide range of environments. The observations, data analysis, and example science cases for these surveys are introduced with an exemplar source, PGCC G26.53+0.17 (G26), which is a filamentary infrared dark cloud (IRDC). The total mass, length, and mean line mass (M/L) of the G26 filament are similar to 6200 M-circle dot, similar to 12 pc, and similar to 500 M-circle dot pc(-1), respectively. Ten massive clumps, including eight starless ones, are found along the filament. The most massive clump as a whole may still be in global collapse, while its denser part seems to be undergoing expansion owing to outflow feedback. The fragmentation in the G26 filament from cloud scale to clump scale is in agreement with gravitational fragmentation of an isothermal, nonmagnetized, and turbulent supported cylinder. A bimodal behavior in dust emissivity spectral index (beta) distribution is found in G26, suggesting grain growth along the filament. The G26 filament may be formed owing to large-scale compression flows evidenced by the temperature and velocity gradients across its natal cloud.</P>

Tranexamic Acid Ameliorates Skin Hyperpigmentation by Downregulating Endothelin-1 Expression in Dermal Microvascular Endothelial Cells

Liu Lin-Xia,Liao Zhi-Kai,Dong Bing-Qi,Jiang Shan,Lei Tie-Chi 대한피부과학회 2024 Annals of Dermatology Vol.36 No.3

Background: Although reports suggest that tranexamic acid (TXA) has clinical benefits for melasma patients by oral, intralesional and topical treatment, the optimal route of TXA therapy and the underlying mechanism involved remain poorly defined. Objective: To compare the skin lightening effect between oral TXA and topical TXA and to dissect the molecular mechanisms using ultraviolet B (UVB)-induced hyperpigmentation mouse model, ex vivo cultured human skin explant, and cultured melanocytes (MCs) and endothelial cells. Methods: Melanin content and cluster of differentiation 31 (CD31)-positive cell numbers were measured in tail skins from UVB-irradiated mice treated by intragastral or topical TXA using immunofluorescent and Fontana-Masson staining. The conditioned medium (CM) was har vested from human umbilical vein endothelial cells treated with or without 3 mM TXA and was used to treat MCs for 48 hours. mRNA and protein levels of tyrosinase and microphthalmia-associated transcription factor were measured using quantitative real-time reverse transcription polymerase chain reaction and western blotting assays. HMB45- and CD31-positive cell numbers as well as melanin content were also examined in ex vivo cultured human skin explants. Results: The hyperpigmented phenotype were significantly mitigated in UVB-irradiated tail skin plus intragastral TXA-treated mice compared with mice treated with UVB only or with UVB plus topical TXA. CD31-positive cell numbers correlated with the anti-melanogenic activity of TXA ther- apy. The data from cultured cells and skin tissues showed that suppression of endothelin-1 (ET-1) in vascular endothelial cells by TXA reduced melanogenesis and MC proliferation. Conclusion: Oral TXA outperforms topical TXA treatment in skin lightening, which contributes to suppression of ET-1 in dermal microvascular endothelial cells by TXA.

Experimental and Theoretical Studies of Bidirectional Variable Curvature Friction Pendulum Bearing

Shu-Chao Lin,Jian-Qiang Han,Hong-tie Zhao 대한토목학회 2020 KSCE JOURNAL OF CIVIL ENGINEERING Vol.24 No.5

In this study, to satisfy the base isolation demand of large-scale building structures under different earthquake records, a new bidirectional variable curvature friction pendulum bearing (BD-VCFPB) is proposed. The VCFPB is designed in detail based on the basic principle of a friction pendulum system. Moreover, the sliding interface function, gap between the slider and the sliding interface, and polytetrafluoroethylene (PTFE) plate stress are studied. Finally, a dynamic cyclic test is conducted to study the influence of the slider size, contact pressure on the PTFE plate, and loading frequency on the hysteretic behavior of the VCFPB. The results indicate that the hysteretic curves of the horizontal force and the displacement are regular, symmetrical, stable, and full, and clearly reflect the variable curvature convex and concave characteristics and the excellent behavior of energy dissipation of the BD-VCFPB. The sliding friction coefficient varies significantly with the contact pressure on the PTFE plate and the loading frequency; however, it has little relation with the slider size. A hysteretic model is proposed based on the results of a unidirectional test, and it is in good agreement with the hysteretic curves of the horizontal force and the displacement from a bidirectional test.

SCOPE: SCUBA-2 Continuum Observations of Pre-protostellar Evolution - survey description and compact source catalogue

Eden, D J,Liu, Tie,Kim, Kee-Tae,Juvela, M,Liu, S-Y,Tatematsu, K,Francesco, J. Di,Wang, K,Wu, Y,Thompson, M A,Fuller, G A,Li, Di,Ristorcelli, I,Kang, Sung-ju,Hirano, N,Johnstone, D,Lin, Y,He, J H,Koch, Oxford University Press 2019 MONTHLY NOTICES- ROYAL ASTRONOMICAL SOCIETY Vol.485 No.2

Calculation of Life-Time Death Probability due Malignant Tumors Based on a Sampling Survey Area in China

Yuan, Ping,Chen, Tie-Hui,Chen, Zhong-Wu,Lin, Xiu-Quan Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.10

Purpose: To calculate the probability of one person's life-time death caused by a malignant tumor and provide theoretical basis for cancer prevention. Materials and Methods: The probability of one person's death caused by a tumor was calculated by a probability additive formula and based on an abridged life table. All data for age-specific mortality were from the third retrospective investigation of death cause in China. Results: The probability of one person's death caused by malignant tumor was 18.7% calculated by the probability additive formula. On the same way, the life-time death probability caused by lung cancer, gastric cancer, liver cancer, esophageal cancer, colorectal and anal cancer were 4.47%, 3.62%, 3.25%, 2.25%, 1.11%, respectively. Conclusions: Malignant tumor is still the main cause of death in one's life time and the most common causes of cancer death were lung, gastric, liver, esophageal, colorectal and anal cancers. Targeted forms of cancer prevention and treatment strategies should be worked out to improve people's health and prolong life in China. The probability additive formula is a more scientific and objective method to calculate the probability of one person's life-time death than cumulative death probability.