1.The effort of various mixing methods on dynamic viscoelasticity of a temporary soft lining material; coe-comfort.
Hyun Ju RYU ; Hanna Eun Kyong BAE ; June Sung SHIM ; Seok Hyung LEE ; Hong Suk MOON ; Mun Kyu CHUNG
The Journal of Korean Academy of Prosthodontics 2004;42(6):641-646
STATEMENT OF PROBLEM: Temporary soft relining materials are used in a diverse clinical situations such as tissue conditioner, relining material, functional impression by varying its viscoelasticity. However, reproduction of consistent viscoelasticity has been not possible. MATERIALS AND METHODS: Considering setting mechanism of this material, this study has measured the effect of varying amount of void in dynamic viscoelasticity of soft relining material, with three different mixing methods. In each methods 10 specimens were made and subjected to dynamic viscoelastic test which were measured at specific times over period of 72 hours. RESULTS: The analysis of the result shown that there was no statistically significant differences between different mixing methods. CONCLUSION: Different mixing methods had no effect over control of viscoelasticity of soft lining material. Further research is recommended for under similar oral environmental condition.
Reproduction
2.Endocrine Disrupters and Reproduction.
Chang Joo LEE ; Ho Joon LEE ; Yong Dal YOON
Journal of Korean Society of Endocrinology 2001;16(6):596-623
No abstract available.
Reproduction*
3.A study on the contact angle and wettability of the dental stones.
Lee Ra CHO ; Kyung Ho CHUNG ; Kyoung Nam KIM
The Journal of Korean Academy of Prosthodontics 2003;41(1):61-70
The purpose of this study was to investigate the contact angles and wettability of conventional dental stones and improved dental stones and newly developed dental stones on several impression materials. Materials included in this study were several dental stones and newly developed dental stone; 2 type III stones (Snow Rock, New Diastone), 6 type IV stones(Crystal Rock, Vel Mix, Fuji Rock, Tuff Rock, Resin Rock and newly developed dental stone) and 1 type V stone (Die Keen). Contact angles on the impression materials were measured with contact angle measuring device. Ten specimens for each material, total 180 specimens were made on void entrapment model. The two impression materials (Handae, GC) were used to produce 9 groups of die stone casts form void entrapment model. Voids in the stone casts were counted under a stereoscopic microscope. The grad for the reproduction ability of each materials on the void entrapment model was calculated from the casts by one examiner. From the experiment, the following results were obtained : 1. The newly developed stones showed smallest contact angle. Type III dental stone had larger contact angles than type IV and V stones. Contact angle was much affected by the impression materials. 2. Resin containing die materials such as Tuff Rock and Resin Rock had smallest void number than any other groups. 3. In comparing reproduction parameters, Tuff Rock and Resin Rock presented superior results, while Vel Mix showed lowest reproduction ability.
Reproduction
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Wettability*
4.Some effects of community on reproductive and contraceptive decision of women
Journal of Practical Medicine 1998;344(1):78-80
This report presented results of a retrospective study that assessed the role of the community in women’s contraceptive decisions. Participants were 1.469 women who has used and/or were using combined oral contraceptives (COCs). The results showed that FP collaborators have greatest role in advising them to use COCs, followed by the health care workers, their husbands and relatives. However, their husbands and relatives play an important role in their discontinuation of the methods. IN order to improve the quality of counseling for COC users, more attention need to be paid for counseling to their husbands and families.
Reproduction
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Contraception
5.A Study on the Void Formation And Detail Reproduction According to The Various Impression Materials And Mixing Methods.
Hyeong Seon RYU ; Heon Song LIM ; Ju Hwan LIM ; In Ho CHO
The Journal of Korean Academy of Prosthodontics 2002;40(2):140-155
Void-free impression taking is important for the fabrication of accurate dental restorations.One of the essential properties of an impression material used for indirect fabrication of precision castings is the reproduction of the fine detail. The objective in this study was to determine the influence of mixing methods on the number of voids and surface detail reproduction.The number of voids and surface detail reproduction were evaluated with the stereomicroscope SZ-PT and photographed. The results were as follows; 1.In comparison of the void formation according to mixing methods of all impression materials,mechanical mixing was better than hand mixing and there was significant difference(P<0.05). 2.In comparison of the void formation according to hand mixing of alginate impression materials(TOKUSO A-1 alpha ,CAVEX IMPRESSIONAL ,AROMA FINE DF III), there was no significant difference among alginate groups.But the number of void was increased in the order of Panasil contact,TOKUSO A-1alpha , Permlastic light bodied and there was significant difference(P<0.05). 3.In comparison of the void formation according to mechanical mixing of alginate impression materials(TOKUSO A-1 alpha, CAVEX IMPRESSIONAL, AROMA FINE DF III), there was no significant different among alginate groups.But the number of void was decreased in order of TOKUSO A-1 alpha, Permlastic light bodied,Panasil contact and there was significant difference(P<0.05). 4.In comparison of the surface detail reproduction according to mixing methods of 3 types of impression materials(TOKUSO A-1 alpha, Permlastic light bodied,Panasil contact), there was no significant difference between hand mixing and mechanical mixing method 5.The surface detail reproduction was only influenced by impression materials,and produced better in order of TOKUSO A-1alpha, Panasil contact,Permlastic light bodied.There was significat difference among 3 type of impression materials(P<0.05). From the above results,void formation is influenced by mixing methods and surface detail reproduction is influenced by impression materials than mixing methods.Therefore,to fabricate accurate restorations,proper impression material and mechanical mixing method are more effective and available clinically.
Hand
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Reproduction*
6.R-based reproduction of the estimation process hidden behind NONMEM(R) Part 1: first-order approximation method.
Min Gul KIM ; Dong Seok YIM ; Kyun Seop BAE
Translational and Clinical Pharmacology 2015;23(1):1-7
NONMEM(R) is the most-widely used nonlinear mixed effects modelling tool introduced into population PK/PD analysis. Even though thousands of pharmaceutical scientists utilize NONMEM(R) routinely for their data analysis, the various estimation methods implemented in NONMEM(R) remain a mystery for most users due to the complex statistical and mathematical derivations underlying the algorithm used in NONMEM(R). In this tutorial, we demonstrated how to directly obtain the objective function value and post hoc eta for the first order approximation method by the use of R. We hope that this tutorial helps pharmacometricians understand the underlying estimation process of nonlinear mixed effects modelling.
Hope
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Reproduction*
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Statistics as Topic
7.Reproduction and Sexual Function in Aging Male.
Journal of the Korean Medical Association 1998;41(9):928-935
No abstract available.
Aging*
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Humans
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Male*
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Reproduction*
8.Assessment of the mother's knowledge and practice for reproductive care, who have a child under 1 year old at 3 communes of Phu Luong district, Thai Nguyen province
Journal of Practical Medicine 2004;490(10):50-54
Knowledge and practice of reproductive health care among mothers of under 1 year old age children in 3 communes of Phu Luong District, Thai Nguyen provine were evaluated, 88,8% subjects having under 11 moths infant had undergone 3 examinations before during and after delivery. In pregnant period, 94/105 subjects had used ferrous tablet, 2/3 did not use vitamin A concerning the knowledge of children care and nutrition, 12,4% subjects thrown away their colostrum, 75% used traditional medicine for treating children's fever, 39% for breathing difficulties, 35% for nubilical inflammation. Therefore, promoting health care knowledge and reproductive care education.. must be recommended.
Mothers
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Knowledge
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Child
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Reproduction
9.Improvement of body iron store in women at reproductive age by using fortified fish sauce
Journal of Vietnamese Medicine 2003;288(9):107-114
A double blind randomized study was conducted from December 2001 to December 2002 in 2 communes of Vu Ban district, Nam Dinh province, on 433 women aged 16-45 divided into 2 groups. Group 1 received fish sauce without fortified iron (15ml of fish sauce/person/daily). Group 2 received iron fortified fish sauce 7.5mg iron under the form of NaFeEDTA (15mg fish sauce/person/daily). Iron fortified sauce improved significantly the anemia and iron deficit status in women with a reduce rate of 8.3% (from 24.7% to 16.4%) reaching 33.6% of efficacy of the target of programme. The rate of exhaustly iron deficit reduced by 15% (from 20.6% to 5.6%) reaching 72.8% of efficacy. Body iron store enhanced with statistical significant in group 2 versus group 1 (p<0.0001)
Iron
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Women
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Reproduction
10.The epidemiological survey on the relationship between agent orange/dioxin exposure and reproductive anomalies and congenital deformities of inhabitants living in A luoi valley, Thua Thien Hue province
Journal of Vietnamese Medicine 2003;290(11):1-12
Study was conducted on 1048 households with 6068 persons in A Luoi district, Thua Thien Hue province, where herbicides were sprayed heavily in war. The relationship between the quantity of herbicide sprayed in war and the severity of environmental pollution at present was recorded. Epidemiological relationship between the pollution of the enviroment and abnormal reproductivity and congenital defects, which were 1.5-4 times higher after the spray versus before the spray with diverse levels among 3 communes exposed to the spray. The most common abnormal reproductivity was spontaneous abortion, then premature delivery with died infants and congenital defects, the stillbirth and hydratiform mole were with lower rate. Dioxine was transported from the enviroment to human body through the exposed food chain such as chicken, fish, duck
Reproduction
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Dioxins
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Herbicides