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金富植 상명대학교 논문집 1992 상명대학교논문집 Vol.30 No.-
The area and the number of tombs in Korea are increasing by degrees of 1% every year. It means about 10㎢ of precious land is occupying by cemetery each year and we have to establish fallowing 3 objects if we aims not to leave the land of tomb behind to our descendants. 1. Minimize the area of cemetery. 2. Collectivize the tombs scattered through out the country. 3. Make the cemetery land into the parkland. and to fulfill above mentioned objective, we must put the next article into practice. 1. Increase the percentage of crematory rate. 2, Induce the people to use the charnel house. 3. Practice the use tombs in limited time. 4. Arrange the potter's field scattered through out the country and make list of cemeteries in whole country. as the Habenstein described in his book "Funeral customs the world over" change comes to funeralization, but it is slow there is much cautious clinging to old ways, with many a backward glance, and much compromise between the old and new. But now our nation absolutely needs rapid change of funeral custom to use precious lands of country effectively.
人蔘이 卵巢摘出로 誘發된 흰쥐의 骨多孔症 예방에 미치는 효능
정국영,서부일,이은숙,변부형,신순식,박지하 대한본초학회 2004 大韓本草學會誌 Vol.19 No.1
Objectives : The present study has been undertaken to investigate the effects of Ginseng Radix on prevention of osteoporosis in ovariectomized rats. Methods : In this experiment, the rats were ovariectomized. Rats were administered by 2 kinds of medicine, Estradiol, Ginseng Radix. The levels of bone mineral density, osteocalcin, ALP, phosphorus, calcium in serum, deoxypyridinoline in urine, calcium, phosphorus, ash weight of bone, body weight and uterus weight were measured. Results : The levels of spinal bone mineral density was significantly increased in comparison with OVX group at 8 weeks in Ginseng Radix group. The levels of serum didn t show significant change in comparison with OVX group in Ginseng Radix group. The levels of urine deoxypyridinoline showed significant decrease in comparison with OVX group in Ginseng Radix group. The levels of femoral and fibula-tibial ash weight didn t show significant increase in comparison with OVX group in Ginseng Radix group. The levels of femoral and fibula-tibial calcium showed significant increase in comparison with OVX group in Ginseng Radix group. The levels of femoral and fibula-tibial phosphorus showed significant increase in comparison with OVX group in Ginseng Radix group. The levels of body weight didn t show significant changes in comparison with OVX group in Ginseng Radix group. The levels of uterus weight didn t show significant changes in comparison with OVX group in Ginseng Radix group. Conclusions : Reviewing these experimetal results, it appears that Ginseng Radix have efficacy on prevention of osteoporosis. And further study should be conducted to illustrate in depth the curing and prevention of osteoprosis.
수용성 및 가식성 콩 단백질/�틴 블렌드 필름 제조 및 물성 연구
김성철,신용섭,정세환,유성구,박인식,김봉식,신부영 한국공업화학회 2003 응용화학 Vol.7 No.2
The manufacture of edible/biodegradable films or coatings can potentially add value to soy protein, Such films can find using as edible or nonedible food packaging materials. The effect of soy protein film-forming solutions on film formation, tensile properties of soy protein/pectin blend films were changed significantly by the amount of glycerol and the ratio of soy protein/pectin. Moreover mechanical properties of soy protein/pectin-montmorillonite clay have been studied. Tensile strength and modulus decreases as the relative humidity increased while with increasing relative humidity elongation at break increased.
ANALYSIS OF THE VLASOV-POISSON EQUATION BY USING A VISCOSITY TERM
Boo-Yong Choi,Sun-Bu Kang,Moon-Shik Lee 충청수학회 2013 충청수학회지 Vol.26 No.3
The well-known Vlasov-Poisson equation describes plasma physics as nonlinear ¯rst-order partial di??erential equations. Be-cause of the nonlinear condition from the self consistency of the Vlasov-Poisson equation, many problems occur: the existence, the numerical solution, the convergence of the numerical solution, and so on. To solve the problems, a viscosity term (a second-order par-tial di??erential equation) is added. In a viscosity term, the Vlasov-Poisson equation changes into a parabolic equation like the Fokker-Planck equation. Therefore, the Schauder ¯xed point theorem and the classical results on parabolic equations can be used for analyz- ing the Vlasov-Poisson equation. The sequence and the convergence results are obtained from linearizing the Vlasove-Poisson equation by using a ¯xed point theorem and Gronwall s inequality. In nu- merical experiments, an implicit ¯rst-order scheme is used. The numerical results are tested using the changed viscosity terms.
Shin, Boo Young,Jang, Sang Hee,Kim, Bong Shik Wiley Subscription Services, Inc., A Wiley Company 2011 Polymer engineering and science Vol.51 No.5
<P><B>Abstract</B></P><P>In this study, poly(lactic acid) (PLA) was blended with chemically modified thermoplastic starch (CMPS) in a twin‐screw extruder. The characteristic properties of PLA/CMPS blends were investigated by observing the morphology, thermal, and mechanical properties, and biodegradability. Differential scanning calorimetry showed that the PLA/CMPS were thermodynamically immiscible. However, scanning electron microscopy and Fourier transform infrared studies revealed that the interfacial adhesion was improved by the PLA‐g‐starch copolymers that were formed at the interface through a transesterification reaction between PLA and CMPS. The crystallinity of the PLA component in the blend was increased by the addition of the CMPS and was highly affected by the morphology of the blend. The tensile strength and elongation were found to decrease in a linear trend with increasing CMPS content. The biodegradability of the blends increased with increasing CMPS content, while initial time lag decreased. POLYM. ENG. SCI., 2011. © 2011 Society of Plastics Engineers</P>