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Determining Osteogenic Differentiation Efficacy of Pluripotent Stem Cells by Telomerase Activity

Zhang S, Sun Y, Sui Y, Li Y, Luo Z, Xiao X, Zhou P, Wei S

BACKGROUND: Bone tissue engineering based on pluripotent stem cells (PSCs) is a new approach to deal with bone defects. Protocols have been developed to generate osteoblasts from PSCs. However, the...
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Systemic sclerosis due to crystalline silica exposure among jewelry workers in Korea: two case reports

Kim JY, Do SY, Moon YH, Lee CG, Kim YS, Choi BS, Kim EA, Song HS

BACKGROUND: Occupational exposure to crystalline silica is a potential risk factor for various systemic autoimmune diseases including systemic sclerosis. The etiology of systemic sclerosis is not conclusively known, but there...
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Validation of a method for the determination of thiocyanate in human plasma by UV/VIS spectrophotometry and application to a Phase I clinical trial of GDC-0425

Shin YG, Meijering , van Heuveln FH, Wieling J, Halladay J, Sahasranaman S, Hop CE

The development and validation of a method for the determination of concentrations of thiocyanate in human plasma are described here. A modified colorimetric method of Bowler was used with the...
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Temperature changes under demineralized dentin during polymerization of three resin-based restorative materials using QTH and LED units

Mousavinasab SM, Khoroushi , Moharreri , Atai M

  • KMID: 2316889
  • Restor Dent Endod.
  • 2014 Aug;39(3):155-163.
OBJECTIVES: Light-curing of resin-based materials (RBMs) increases the pulp chamber temperature, with detrimental effects on the vital pulp. This in vitro study compared the temperature rise under demineralized human tooth...
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Dental fiber-post resin base material: a review

Lamichhane A, Xu C, Zhang FQ

Teeth that have short clinical crown, which are not alone enough to support the definitive restoration can be best treated using the post and core system. The advantages of fiber...
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A Case Report of Lung Cancer in a Horse Trainer Caused by Exposure to Respirable Crystalline Silica: An Exposure Assessment

Yoon JH, Kim B, Choi BS, Park SY, Kwag HS, Kim IA, Jeong JY

  • KMID: 2317084
  • Saf Health Work.
  • 2013 Mar;4(1):71-74.
Here, we present a case of lung cancer in a 48-year-old male horse trainer. To the best of our knowledge, this is the first such case report to include an...
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Exposure Assessment Suggests Exposure to Lung Cancer Carcinogens in a Painter Working in an Automobile Bumper Shop

Kim B, Yoon JH, Choi BS, Shin YC

  • KMID: 2317106
  • Saf Health Work.
  • 2013 Dec;4(4):216-220.
A 46-year-old man who had worked as a bumper spray painter in an automobile body shop for 15 years developed lung cancer. The patient was a nonsmoker with no family...
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Two Cases of Lung Cancer in Foundry Workers

Jeong I, Ryu I, Kim B, Park I, Won JU, Kim EA, Kim I, Roh J

  • KMID: 2379962
  • Ann Occup Environ Med.
  • 2013 ;25(1):16.
BACKGROUND: Iron and steel foundry workers are exposed to various toxic and carcinogenic substances including crystalline silica, polycyclic aromatic hydrocarbons, and arsenic. Studies have been conducted on lung cancer in...
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Influence of modification in core building procedure on fracture strength and failure patterns of premolars restored with fiber post and composite core

Kim YH, Lee JH

PURPOSE: The influence of the modified process in the fiber-reinforced post and resin core foundation treatment on the fracture resistance and failure pattern of premolar was tested in this study. MATERIALS...
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Characteristics of New Estrogen Biosensor Employing Taste Principles

Kwon SB, Lee CH, Kim KN

  • KMID: 2170739
  • Int J Oral Biol.
  • 2011 Jun;36(2):103-108.
Measurement of estrogen concentration in bio-samples are very important for differential diagnosis of various disease or evaluation of health status. However, it is difficult to collect immediate data of estrogen...
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Comparison of the degree of conversion of light-cured resin cement in regard to porcelain laminate thickness, light source and curing time using FT-IR

Yuh CS, Kim JH, Kim SJ, Lee YK, Shim JS

STATEMENT OF PROBLEM: The degree of light attenuation at the time of cementation of the PLV restoration depends on characteristics such as thickness, opacity and shade of the restorations, which...
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The amounts and speed of polymerization shrinkage and microhardness in LED cured composites

Park SH, Kim SS, Cho YS, Lee SY, Kim DH, Jang YJ, Mun HS, Seo JW, Noh BD

This study evaluated the effectiveness of the light emitting diode(LED) units for composite curing. To compare its effectiveness with conventional quartz tungsten halogen (QTH) light curing unit, the microhardness of...
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Comparison of linear polymerization shrinkage in composites and compomer polymerized by plasma arc or conventional visible light curing

Lee JI, Park SH

The purpose of this study was to evaluate the effectiveness of plasma arc curing (PAC) unit for composite and compomer curing. To compare its effectiveness with conventional quartz tungsten halogen...
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Mechanical Properties of Quartz Fiber Post

Lee YS, Kang IJ

  • KMID: 2118661
  • J Korean Acad Prosthodont.
  • 2002 Feb;40(1):68-78.
The post core system has been used for reconstructon of severely damaged crown by caries or trauma.But problems such as crown exfoliation,post core fracture and root fracture have been reported....
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Effect of resin matrix on degree of conversion and fracture toughness of dental composites

Lee YS, Choi KK, Park SJ

Current composites are made with dimethacrylate monomers and silane-treated silica microfillers, either alone or with silane treated glass fillers. The main reasons for clinical failure of dental composites are secondary...
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Autoregulation of Quartz-induced iNOS by iNOS-derived Hydrogen Peroxide in Rat2 Fibroblast

Kim KA, Nam HY, Mun JH, Jeong JS, Lim Y, Chung CK

  • KMID: 2028163
  • Korean J Occup Environ Med.
  • 2001 Dec;13(4):385-392.
OBJECTIVES: This study was performed in order to investigate the molecular mechanism regulating nitric oxide synthase(NOS) induced by alpha-quartz in Rat2 fibroblast. METHODS: alpha-quartz-induced nitric oxide(NO) and H2O2 formation and...
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The Effect of Silica Dust on Ventilatory Function in Foundry Workers

Koo JW, Kim KA, Chung CK

  • KMID: 2028006
  • Korean J Occup Environ Med.
  • 1998 Feb;10(1):94-104.
In order to study the exposure level of silica dust and the effects of silica dust on ventilatory function, respirable dust samples were collected by personal air samplers using NIOSH...
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Treatment of Potassium Titanyl Phosphate Laser and Radiation Therapy for Tracheal Stenosis

Kim KT, Kim MH, Kim CY, Lee IS, Kim HM, Kim HJ

  • KMID: 2061988
  • Korean J Thorac Cardiovasc Surg.
  • 1997 Dec;30(12):1237-1241.
Tracheal stenosis is a difficult disease entity to manage. Laser ablation is one effective treatment for treacheal stenosis and can be utilized if tracheal reconstructive surgery is impossible. Potassium titanyl...
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Quantitative Analysis of Quartz, Mica, and Feldspar in Respirable Coalmine Dust in Taebaek Area by Fourier Transform Infrared Spectrophotometry

Choi HC, Cheon YH, Kim HJ, Lee JJ

  • KMID: 2282338
  • Korean J Prev Med.
  • 1988 Nov;21(2):271-283.
A Fourier transform infrared spectrophotometric method was described for the determination of quartz, mica(sericite) and feldspar(potassium feldspar) in respirable dust in Taebaek area. The results were as follows; 1) The...
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Quartz Concentration and Respirable Dust of Coal Mines in Taeback and Kangneung Areas

Choi HC, Cheon YH, Yoon YN, Kim HJ

  • KMID: 2282274
  • Korean J Prev Med.
  • 1987 Nov;20(2):261-269.
In order to investigate working conditions of underground coal mines, this work was undertaken to evaluate the respirable dust and the concentration of quartz in Taeback and Kangneung areas. The...
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