• Applied Biological Chemistry
• /
• v.23 no.2
• /
• pp.131-139
• /
• 1980

TOK (2,4-Dichlolo-4'-nitrodiphenyl ether) was applied to two Korean soils possessing different physico-chemical properties at a certain concentration and incubated for a certain time under flooded conditions. The metabolites and the soil microorganisms involved in the degradation of TOK are studied. Chong Ju and Chung Ju soils treated with TOK at a concentration of 500 ppm and incubated for two, four, and six months at $30^{\circ}C$ yielded 4-chloro-4'-amino diphenyl ether, 2, 4-dichloro-4'-amino diphenyl ether(amino-TOK), N-[4'-(4-chloro-phenoxy)] phenyl acetamide, and N-[4'-(4-chloro-phenoxy)] phenyl formamide as the major metabolites. TOK underwent the reduction of nitrogroup to amino group, dechlorination, acetylation, and formylation. No cleavage at the ether linkage was recognized. TOK was more readily degraded in Chung Ju soil which is characterized by the higher pH (PH 6.43), clay loam in textural class, and the higher cation exchange capacity. The toxicity of TOK as a possible environmental contaminant is expected to be considerably reduced as a result of the above degradation Twelve strains of soil bacteria were isolated from the TOK-treated Chong Ju and Chung Ju soils. As a result of the incubation of TOK in pure cultures of the isolates, T-1-1 strain isolated from Chong Ju soil had almost no degradability, whereas T-2-3 strain turned out to be the most potent. The degradation of TOK by the isolates constituted mostly the reduction of the nitro group to amino group. The citrate buffer extract of Chung Ju soil reduced TOK more readily to amino-TOK than that of Chong Ju soil.

• Journal of the Korean Recycled Construction Resources Institute
• /
• v.6 no.2
• /
• pp.119-127
• /
• 2011

Objective of this study is to identify properties on strength increase of hardened concrete and fluidization of non-hardened concrete using waste ceramics generated by construction waste, which is a type of industrial waste, and by ceramics, which is a clay plastic, during its production process, and determine length change ratio caused by drying shrinkage during substitution of recycle aggregate and waste ceramics, and whether they can be used as concrete compounds. Slump of non-hardened concrete exhibited the best fluidization and formability at recycled aggregate's replacement ratio of 60% driven by higher substitution ratio of recycled aggregate and waste ceramics while air content met the KS requirement when substitution ratio of waste ceramics was $4,000cm^2/g$. Compressive strength of hardened concrete exceeded the requirements at early age and standard age and temperature dropped by roughly $6{\sim}10^{\circ}C$ less than the standard at maximum temperature in adiabatic temperature increase, which will hopefully result in stronger durability.

• The Journal of Churna Manual Medicine for Spine and Nerves
• /
• v.4 no.2
• /
• pp.85-98
• /
• 2009

Objectives : The purpose of this study was to find out tendency of traffic accident patients treated in korean medicine hospital. Methods : We investigated 77 patients who were treated in Semyung University Korean Medicine Hospital from 1 st, January, 2007 to the 30st September, 2009. Results and Conclusions : 1. In distribution of gender and age, the rate of male was 36.4%, that of female was 63.6% and majority of patients were twenties, thirties and forties. 2. In the traffic accident patterns, the most was car crash from behind(49.4%) and after traffic accident, 42 patients(54.6%) visited our hospital in less than 5 days. 3. 22 patients(28.6%) choose the oriental medical treatment for primary care. And 35 patients(45.4%) visited our hospital due to preference of oriental medicine. 4. In partial pain, most was the neck(76.6%), followed by low back(61.0%). 5. In radiation test(excluded sprain and straightening), the most was HIVD of L-SPINE(14.0%). 6. In the periods of admission, less than 7 days was the 1st(36.4%), 14 days was the 2nd(27.3%). 7. The treatment was effective to 67 patients out of 77 patients who had been hospitalized.

• Journal of Acupuncture Research
• /
• v.27 no.1
• /
• pp.129-135
• /
• 2010

Objectives : The purpose of this research was to examine that effect of Sosang($LU_1$)-Eunbaek($SP_1$) bloodletting was similar to effect of Sa-kwan $LI_4$) and Taechung($LR_3$)> acupuncture on pain and discomfort of acute dyspepsia in upper abdomen. Methods : We divided 36 patients with acute dyspepsia into two groups and treated Group A with Sosang($LU_{11}$)-Eunbaek($SP_1$) bloodletting and Group B with Sa-kwan $LI_4$) and Taechung($LR_3$)> acupuncture. Pain and discomfort in upper abdomen was measured by Visual Analogue Scale(VAS) scores of the two groups before treatment and after 15 minutes to treat. Results : Both group A and B represented effective improvement in VAS of pain and discomfort in upper abdomen. And there was no difference between A group and B group statistically. Conclusions : It is suggested that Sosang($LU_{11}$)-Eunbaek($SP_1$) bloodletting may have similar effect compared with Sa-kwan $LI_4$) and Taechung($LR_3$)> acupuncture on acute dyspepsia treatment.

• Proceedings of the Optical Society of Korea Conference
• /
• 2006.02a
• /
• pp.247-248
• /
• 2006

• Journal of Periodontal and Implant Science
• /
• v.17 no.1
• /
• pp.103.1-103.1
• /
• 1987

• Journal of Periodontal and Implant Science
• /
• v.17 no.1
• /
• pp.103.2-103.2
• /
• 1987

• Proceedings of the Korean Society of Medical Physics Conference
• /
• 2006.08a
• /
• pp.125-125
• /
• 2006

• The Bulletin of The Korean Astronomical Society
• /
• v.33 no.2
• /
• pp.26.2-26.2
• /
• 2008

• Proceedings of the Korean Society of Sericultural Science Conference
• /
• 2003.10a
• /
• pp.143-143
• /
• 2003

Among all animal species, a few have the remarkable capacity to regenerate a missing part of their body after amputation. The early process of epimorphic regeneration in which dedifferentiation and cell proliferation are involved, provides a useful model to investigate the mechanism of normal development as well as differentiation. To better understand early stage of head regeneration, we have generated 5'-end sequence of 1,592 expressed sequence tags (ESTs) from cDNA library of regenerating tissue. (omitted)