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張瑛燾 단국대학교 대학원 1982 學術論叢 Vol.6 No.-
The cotton, and Bast fiber fabrics were dyed with reactive dye and direct dye, and the change of the tensile strengh and the elongation were measured. And the loss of the tensile strength and elongation and color fastness with Ultra Violet radiation (carbon are Fade O-meter. 100hrs) were measured, and the following results were obtained. (1) For the cotton fabric, the tensile strength was increased but for other fabrics were decreased by dyeing. (2) The elongation of all samples were decreased by dying. (3) Little change in the rate of tensile strength and elongation loss with U.V radiation of the reactive dyed fabric was better than direct dyed one.
尹文求,張瑛燾 건국대학교부설 산업기술연구소 1980 논문집 Vol.5 No.-
Some characteristics of the isotactic polypropylene that contain 0.2%∼0.6% trilauryl trithiophosphite(TLTTP) and subjected to heat treatment above melting point under nitrogen atmosphere have been investigated. After melt processing, there were considerable decrease of molecular weight of the polymer when compared with that of without TLTTP. IR test of the sample showed that there was no evidence of any chemical combination with TLTTP. It was observed that TLTTP promoted depolymerisation of polypropylene when melted above the temperature of 240∼260℃. Although there were some increase of extractable low molecular weight fraction after melt processing, depolymerisation occured mainly on the main chain of the polypropylene and the structure of the polymer has not changed.
綿經編布의 精鍊漂白 및 反應性染料에 의한 物性變化에 關한 硏究
張瑛燾 건국대학교 부설 산업기술연구소 1983 논문집 Vol.8 No.-
Effect of pH and temperature on shirnkage of greyknits(Slip) and effects of scouring conditions on shrinkage, reflectance, handle and reactive dyeing properties of cotton warp knits were studied. The result are as follows. In solution at room temperature and pH 7∼13. The maximum area shrinkage was about 20% pH has no effect on area shrinkage but on linear shrinkage. Temperature has no effect on area shrinkage of grey knits. in mixed solution of sodium hydroxide and soda ash. The decrease of concentration ratio of soda ash made the reflectance decrease and the softness increase. The maximum equilibrium absorption obtained at pH8, but the fixation was obtained at pH10. Scouring conditions has a small effect on the rate of fixation but a large effect on the rate of absorption.
尹文求,張瑛燾 건국대학교 부설 산업기술연구소 1983 논문집 Vol.8 No.-
The morphology of polymers crystallized from oriented melt is distinctly different from classical solution-grown single crystals or from the spherulitic texture growing out of quiescent melts. In practice, most polymer processing operation involve crystallization from an oriented state. Melt spinning, blowing and injection moling of crystalline polymers are good examples of such processes. From a technological point of view, therefore, these phenomena are important ones for study because they are closly related to the final properties of the products. The present paper deals with the requirments of an appratus for measuring flow-induced crystallization of polymers and the development of morphology in the crystalline structure associated with flow-induced molecular orientation.
선택적 수술에서 교차시험/수혈비를 활용한 혈액요청의 적정성 평가에 관한 연구
장영도 ( Young Do Chang ),김재수 ( Jae Soo Kim ),김민중 ( Min Jung Kim ),노태준 ( Tae Jun Rho ),이상일 ( Sang Il Lee ) 대한임상검사과학회 2004 대한임상검사과학회지(KJCLS) Vol.36 No.2
The over-preparation of blood for elective surgery causes some problems such as returning of blood, inefficient task and loss of reagents. In recent blood transfusion practice, there has been changing patterns of blood use in elective surgery as various side effects of transfusion have become known and operation techniques are developed. This study was performed to evaluate the optimal utilization of blood for various elective and/or emergency surgery. We surveyed the quantity of blood transmitted to wards, returned to blood bank, and the number of crossmatching test done for the elective surgery of the patients at the D. University Hospital, the tertiary teaching hospital from August 1, 2001 to October 31, 2001. Crossmatched to transfusion ratio (C/T ratio) was calculated, in which C means the unit of accomplished crossmatching test and T means the unit of transfused blood component. The unit of transfused blood was analysed in terms of issuing time, sex, age, clinical department, and blood component type. The usage of bloods for the emergency surgery was also analyzed. In our study, C/T ratio was highest on Monday (1.54) and Tuesday (1.53), and higher in female patients(1.54) than in male patients (1.32). No significant relationship was observed between age groups. Among clinical departments, thoracic and cardiovascular surgery showed the highest C/T ratio (1.54). From above results, we could be sure that the management of transfusion practice was relatively appropriate in recent years, although the entire introduction of type and screen (T&S) method was desirable. If the T&S method is performed, the C/T ratio would be almost 1.00 and it would also relieve the duty of blood bank.
添加劑에 의한 綿織物의 防炎性 및 物理的 性質에 미치는 影響에 關한 硏究
張瑛燾 건국대학교 1982 學術誌 Vol.26 No.2
In this study, the flame retardancy, physical properties, and the thermal behavior, phosphorus and nitrogen contents of cotton fabrics finished with incorporating some additive was investigated. Breaking strength was almost constant for all treated fabrics, but tearing strength was decreased as the conc. of treating solution was increased, and the fabric treated with 40% and 35% solution lost 36% of it's original tearing strength. Dry flex abrasion strength was remarkably decreased and sample treated with 40%, solution retained 38.5% of it's original strength. It shows that if the fabric treated with above 35% solution of THPC-Urea (mole ratio 1:1), it is to be passed DOC FF 3∼71 flame test. Generally, the monsanto's crease resistance of all treated fabrics was increased. TGA analysis shows that the temperature of initial weight loss of treated fabrics were lower than that of untreated fabric by about 80-100℃ and major weight loss temperature was also lower about 40℃. The weight of the residues left at 500℃ for flameretardant finished fabrics were much larger. Phosphorus and nitrogen content of treated fabric was increased as the conc. of treating solution, and decreased against number of washes. It phosphorus content was above 3% or nitrogen content was above 2.7%, it is to be passed DOC FF 3-71 flame test.