상악 후방의 부분 무치악부에 Sintered porous surface implant의 적용에 관한 문헌고찰 및 증례보고

최희준,이광호,이영석,손경준 조선대학교 구강생물학연구소 2002 Oral Biology Research (Oral Biol Res) Vol.26 No.2

Implant therapy based on the principle of osseointegration has seen a remarkable expansion of its application in dentistry in recent years. This article is a consideration of an endosseous dental implant device(Endopcre, Innova) that uses a sintered porous surface geometry to achieve implant fixation by bone ingrowth. Its implant is documented excellent survival rate(97.2% after a mean functional time of 34.6 months) in Partially edentulous maxillae and insignificant crestal bone loss from baseline. The combination of an innovative, minimally invasive, indirect sinus elevation procedure with a porous-surfaced dental implant system may allow the routine treatment of posterior maxillary site in patients who would otherwise require much more sophisticated and expensive reconstructive surgery to receive longer dental implants .

Determination of trace level carbonate ion in Mg–Al layered double hydroxide: Its significance on the anion exchange behaviour

Jui Chakraborty,Swapankumar Ghosh,Somoshree Sengupta,Sudip Dasgupta,Manjusha Chakraborty,Sudipta Mallik,Kamal Lal Das,Debabrata Basu 한국공업화학회 2012 Journal of Industrial and Engineering Chemistry Vol.18 No.6

The presence of trace level (<1 ppm) carbonate ion in the interlayer space of MgAl-LDH has been estimated by ion chromatography technique using a novel inverse chemical suppression method using 0.5 mM H2SO4 as mobile phase and 25 mM LiCl as regenerating solution. The presence of carbonate ion in the LDH structure was found to affect the anion exchange capacity of MgAl-LDH. This has been illustrated by carrying out anion exchange of nitrate ion in the MgAl-LDH structure with chloride ion. The importance of this simple but accurate technique for the carbonate ion estimation is demonstrated and reported in this communication.

The Credit Channel of Monetary Transmission in a Small Open Economy

Jui-Chuan Chang - Email 한국국제경제학회 2008 International Economic Journal Vol.22 No.2

This paper studies the credit channel of monetary transmission in a small open economy. We develop a simple general equilibrium model by extending Bernanke and Blinder’s (1988) CC-LM framework and Edwards and Végh’s (1997) banking specification. Under a floating exchange rate regime and with imperfect capital mobility, we establish that bank-lending behavior may amplify, neutralize or attenuate the impact of monetary policy on output, price and the nominal exchange rate as compared to the standard interest rate channel. An important explanatory factor is the sensitivity of banks and firms to loans and market interest rates. This examination is important to consider in light of the standard AD-AS model at the policy-making level, and in light of recent empirical evidence regarding the credit channel as an important element of the monetary transmission mechanism.

Sequential pattern load modeling and warning-system plan in modular falsework

Jui-LinPeng,Cheng-LungWu,Siu-LaiChan 국제구조공학회 2003 Structural Engineering and Mechanics, An Int'l Jou Vol.16 No.4

Probabilistic Multiobjective Optimization of Sustainable Engineering Design

Jui-Sheng Chou,Thanh-Son Le 대한토목학회 2014 KSCE JOURNAL OF CIVIL ENGINEERING Vol.18 No.4

As the global population reaches 7 billion and standards of living are increasing, engineers are being pressured to use limitednatural resources to satisfy ever-increasing demand. Project engineers are currently charged with achieving a balance between costand duration, and must consider environmental factors to reach sustainable development. This work proposes a novel probabilisticmulti-objective optimization algorithm to attain sustainable construction cost, project duration, and CO2 emissions simultaneously inan uncertain project environment. The novel algorithm, which is based on Particle Swarm Optimization integrated with Monte Carlosimulation, is applied to generate a low-carbon economy and cleaner production. A typical construction project is selected todemonstrate the application of proposed algorithm for making sustainable decisions under multi-objectives. The proposed methoddemonstrated its risk analysis capacity by obtaining non-dominant optimized solutions for cleaner construction. This papercontributes to facilitating project managers in achieving a design that satisfies technical and quality requirements with lowest cost,shortest duration, and minimal adverse impacts on the environment.

What Drives China’s 2015 Stock Market Surges and Turmoil?

Jui-Jung Tsai,Yang-Chao Wang,Xiongwei Li 한국증권학회 2019 Asia-Pacific Journal of Financial Studies Vol.48 No.3

Using high-frequency data, we investigate China’s stock market surges and turmoil from 2014 to 2015 by employing GARCH family models to evaluate the effects of government policies, economic factors, and related announcements. The results indicate that China’s stock market has primarily been driven by government policies rather than economic factors. During the period, the commentaries of the People’s Daily further amplified the direction of market movements in the market surges and turmoil. In addition to individual policies and announcements, we explore the structural changes in volatility in different market stages and provide explanations for the distinct features of each stage.

Polymer/layered silicate nanocomposite anticorrosive coatings

Jui-Ming Yeh,Kung-Chin Chang 한국공업화학회 2008 Journal of Industrial and Engineering Chemistry Vol.14 No.3

Polymer/layered silicate (PLS) nanocomposites have recently drawn intense attention from polymer scientists, physicists, and material scientists because of their unique properties resulted from the combining characteristics of both components at nanoscaled level. No matter the measure-journal articles, patents as well as industry research and development (R&D) funding-efforts in PLS nanocomposite had been exponentially growing worldwide for the past 10 years. Aside from the understanding in fabrication, characterization, and improved mechanical and other properties, the measurement of corrosion protection effects of PLS nanocomposites in the form of coating is crucial to gain fundamental understanding of anticorrosion mechanism of these materials. In the case of PLS nanocomposites, the measurements of anticorrosive properties are also helpful to find out the gas barrier properties of polymer–layered silicate interactions and the structure–property relationship in nanocomposites. This is because anticorrosive performances are strongly influenced by their nanoscale structure and interfacial characteristics. In this article, recent advances in PLS nanocomposite anticorrosive coatings are highlighted.

Physiological influences on drug transport across human stratum corneum in vivo

( Jui Chen Tsai ),( Hamm Ming Sheu ),( Ming Kai Lin ) 한국피부장벽학회 2008 한국피부장벽학회지 Vol.10 No.2

This paper discusses the influences of physiological factors including anatomical sites and sebum secretion on drug transport across human stratum corneum (SC) in vivo by utilizing noninvasive, quantitative attenuated-total-reflectance Fourier-transform infrared spectroscopy (ATR-FTIR) technology. 4-Cyanophenol (CP) and cimetidine (CM) were selected as two model compounds of different lipophilicity and molecular size. To investigate regional variation, saturated solutions of CP and CM were applied to the skin surface of Chinese males, at five anatomical sites, including forearm, back, thigh, leg, and abdomen, followed by sequential tape-stripping of SC. The drug concentration profiles in the tape-stripped SC were determined using ATR-FTIR spectroscopy. Thickness of the SC was estimated simultaneously using two-point measurements of transepidermal water loss before and after completion of tape stripping. Estimation of partition, diffusion and permeability coefficients was achieved by analysis of the data using the unsteady-state diffusion equation. The results demonstrated the rank order of regional variation in permeability coefficients was similar for both drugs and decreased in the order of back > forearm > thigh > leg ≥ abdomen, but the variation was more prominent for CM. Regional variation in SC transport of CP was mainly influenced by its intrinsic diffusivity across the SC, whereas variation in transport of CM could be attributed to both thermodynamic and kinetic differences among different anatomical skin sites. Similar methodology was applied to study the effects of sebum on SC drug transport. We found that sebum supplement increased the SC permeability of CM at the forearm for more than three fold, but not that of CP. The increase in SC permeability of CM was mainly attributed to the enhanced SC diffusivity. Sebum removal at the forehead has small, but significant effect on the SC permeability of CM. SC permeability of CM was linearly correlated to the frequency shift of CH2 asymmetric/symmetric stretching in the ATR-FTIR spectra of the SC due to sebum treatment. Sebum treatment increased the SC permeability of relatively hydrophilic drug and altered the barrier function of stratum corneum by disordering structures of the intercellular lipid molecules.

Experimental Study on Load-Bearing Capacities of Frame-Type Scaff olds Used in Precast Construction

Jui-LinPeng,Pao-Li Wang,Siu-Lai Chan,Po-Kai Wu 한국강구조학회 2020 International Journal of Steel Structures Vol.20 No.2

In precast construction, because the precast beams are broader and the frame-type steel scaffolds need to bear more weight, such as that of the precast slabs and precast beams, the dimensions and load-bearing capacities of the frame-type steel scaffolds are different from those of traditional door-type steel scaffolds. The results of this study show that based on the load-bearing capacities of the five different combined setups of frame-type steel scaffolds used in this study, the horizontal members of the square-type and rectangle-type steel scaffolds are able to enhance the load-bearing capacities of the combined setups of the frame-type steel scaffolds. Therefore, when adopting combined setups of frame-type steel scaffolds, it is advisable to refrain from using only door-type steel scaffolds on construction sites. The ability of jack bases to enhance the load-bearing capacities of frame-type steel scaffolds is not significant. Under the condition of an eccentric load located at one-third of both the x-axis and y-axis, the load-bearing capacity of the frame-type steel scaffolds reduces to 60% of that when no eccentric load is involved. When a lateral force is applied, the critical load of frame-type steel scaffolds decreases with increasing lateral forces.

Projected Rainfall and Temperature Changes over Malaysia at the end of the 21st Century based on PRECIS Modelling System

Jui Le Loh,Fredolin Tangang,Liew Juneng,David Hein,이동인 한국기상학회 2016 Asia-Pacific Journal of Atmospheric Sciences Vol.52 No.2

This study investigates projected changes in rainfall and temperature over Malaysia by the end of the 21st century based on the Intergovernmental Panel on Climate Change (IPCC) Special Report on Emission Scenarios (SRES) A2, A1B and B2 emission scenarios using the Providing Regional Climates for Impacts Studies (PRECIS). The PRECIS regional climate model (HadRM3P) is configured in 0.22o × 0.22o horizontal grid resolution and is forced at the lateral boundaries by the UKMO-HadAM3P and UKMOHadCM3Q0 global models. The model performance in simulating the present-day climate was assessed by comparing the modelsimulated results to the Asian Precipitation - Highly-Resolved Observational Data Integration Towards Evaluation (APHRODITE) dataset. Generally, the HadAM3P/PRECIS and HadCM3Q0/PRECIS simulated the spatio-temporal variability structure of both temperature and rainfall reasonably well, albeit with the presence of cold biases. The cold biases appear to be associated with the systematic error in the HadRM3P. The future projection of temperature indicates widespread warming over the entire country by the end of the 21st century. The projected temperature increment ranges from 2.5 to 3.9oC, 2.7 to 4.2oC and 1.7 to 3.1oC for A2, A1B and B2 scenarios, respectively. However, the projection of rainfall at the end of the 21st century indicates substantial spatio-temporal variation with a tendency for drier condition in boreal winter and spring seasons while wetter condition in summer and fall seasons. During the months of December to May, ~20-40% decrease of rainfall is projected over Peninsular Malaysia and Borneo, particularly for the A2 and B2 emission scenarios. During the summer months, rainfall is projected to increase by ~20-40% across most regions in Malaysia, especially for A2 and A1B scenarios. The spatio-temporal variations in the projected rainfall can be related to the changes in the weakening monsoon circulations, which in turn alter the patterns of regional moisture convergences in the region.