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급성 세균성 감염증에 대한 Cefotetan(Yamatetan^ⓡ)의 임상적 효과
김주옥,안원전,박종훈,노흥규,박종우 충남대학교 의과대학 지역사회의학연구소 1987 충남의대잡지 Vol.14 No.1
Total 20 cases of infectious diseases were treated with Cefotetan at the Dept. of internal medicine, Chung Nam National University Hospital, Dae Jeon, Korea, from January 1985 to April 1985. Among 20 cases, 6 were the patients with acute pyelonephritis, 7 were pneumonia, 2 were acute cholecystitis, 2 were chronic bronchitis, 2 were cellulitis and 1 was lung abscess. The response was good in 16 cases, and poor in 4 cases. The laboratory tests were normal except I which was reversible. (mild elevation of SGOT and SGPT) The side effects were noted in 2 cases, such as skin eruption and drug fever, which were improved with supportive care. Cefotetan was thought to be useful against acute bacterial infections of respiratory, urinary, biliary tracts and cutaneous tissue.
Effects of Green Manure and Carbonized Rice Husk on Soil Properties and Rice Growth
Weon-Tai Jeon(전원태),Ki-Yeong Seong(성기영),Jong-Ki Lee(이종기),In-Seok Oh(오인석),Young-Han Lee(이영한),Yong Sik Ok(옥용식) 한국토양비료학회 2010 한국토양비료학회지 Vol.43 No.4
작부체계내로의 녹비작물의 도입은 토양의 건전성 향상으로 농업생산성의 지속성 유지에 중요한 역할을 한다. 그러나 벼 재배를 위해 호밀 같은 화본과 녹비작물이 다량으로 투입 될 경우 환원장해 등의 부작용이 발생한다. 본시험은 녹비작물 헤어리베치와 호밀의 혼파를 이용하여 벼 재배 시 왕겨숯의 처리 효과를 구명하고 수행하였다. 시험장소는 농촌진흥청 국립식량과학원 답작시험 포장이었고 시험토양은 식양질인 신흥통이었다. 시험기간은 2007년 10월 녹비파종에서 벼 수확기인 2008년 10월까지였다. 시험처리는 왕겨숯 처리, 무처리 및 관행시비구를 두었고 왕겨숯 처리구는 혼파 녹비작물의 지상부 제거와 전체 식물체의 투입구로 구분하였다. 이앙 후 8일과 37일의 산화환원전위는 왕겨숯 무처리에 비하여 처리한 구에서 증가하였다. 이앙 후 17일과 49일의 토양 암모니아태 질소의 함량은 전식물체 투입구의 왕겨숯 처리구에서 가장 높았다. 벼의 주요 생육특성인 초장과 경수도 토양의 산화환원전위와 암모니태질소 함량 영향으로 이앙 후 48일에 전식물체 투입한 왕겨숯 처리구에서 가장 양호하였다. 쌀 수량은 전식물체 투입구의 왕겨숯 처리 (5,290 kg ha<SUP>-1</SUP>)와 무처리 (5,140 kg ha<SUP>-1</SUP>)간 유의적 차이가 없었다. 그러나 벼 재배 후 왕겨숯 처리구에서 토양물리성인 공극률과 용적밀도가 개선되었다. 따라서 왕겨숯 처리는 쌀 수량의 유의적 증가에 기여하지는 못하였지만 벼 생육기간 및 벼 수확 후 토양 이화학성의 개선효과가 있어 토양개량제로 이용할 수 있을 것으로 판단된다. The cultivation of green manure crops plays an important role in soil quality and sustainability of agricultural system. However, the incorporation of green manure crops may be of concern because it can lead to strongly reducing conditions in the submerged soil. This study was conducted to evaluate the effects of rice husk carbon on rice (Oryza sativa L.) cultivation using green manure mixtures (hairy vetch + rye) in rice paddy. Field experiments were conducted in rice paddy soil (Shinheung series, fine loamy, mixed, nonacid, mesic family of Aeric Fluventic Haplaquepts) at the National Institute of Crop Science (NICS), Korea from October 2007 to October 2008. The experiments consisted of three treatments: application or no application of carbonized rice husk, and conventional fertilization. These treatments were subdivided into whole incorporation and aboveground removal of green manure mixtures. The redox potential (Eh) was higher upon application of the carbonized rice husk when compared to no application at 8 and 37 days after transplanting (DAT). The ammonium-N (NH4-N) in soil was highest upon the application of carbonized rice husk + whole green manure incorporation at 17 and 49 DAT. Plant height and tiller number of rice were similar to the NH4-N concentration in soil. Rice yields of application and no application of carbonized rice husk treatment were not significant. However, application of carbonized rice husk improved the soil physical properties such as bulk density and porosity after rice harvest. Therefore, the results of this study suggest that carbonized rice husk could be used as soil amendment for environmentally-friendly rice production under a green manure mixture-rice cropping system.
Changes of Soil Properties and Temperature by Green Manure under Rice-based Cropping System
Weon-Tai Jeon,Min-Tae Kim,Ki-Yeong Seong,Jong-Ki Lee,In Seok-Oh,Sung-Tae Park 韓國作物學會 2008 Korean journal of crop science Vol.53 No.4
The cultivation of green manure crop is considered as a good management practice by increasing soil organic matter and fertility levels. This experiment was conducted to improve the soil environment under rice-based cropping system at paddy soil (fine loamy, mixed, nonacid, mesic, family of Aeric Fluventic Haplaquepts) in National Institute of Crop Science (NICS), Korea in 2006 to 2007. The variation of soil temperature in green manure plots was lower than without green manure (control) during spring season (April to May). The temperature variation of no tillage plot (broadcast before rice harvest) was the lowest among treatments. After green manure cropping, the soil bulk density and porosity ratio were improved at the top soil. The production of green manure was the highest athairy vetch and barley mixture plot by partial tillage. However, mixture treatment had no improvement on soil organic matter. After rice cropping with green manure application, soil quality was improved such as soil physical properties except mixture treatment. Therefore, we suggest that soil quality should be improved by green manure cultivation under rice-based cropping system.
Changes of Soil Properties and Temperature by Green Manure under Rice-based Cropping System
Jeon, Weon-Tai,Kim, Min-Tae,Seong, Ki-Yeong,Lee, Jong-Ki,Oh, In-Seok,Park, Sung-Tae The Korean Society of Crop Science 2008 Korean journal of crop science Vol.53 No.4
The cultivation of green manure crop is considered as a good management practice by increasing soil organic matter and fertility levels. This experiment was conducted to improve the soil environment under rice-based cropping system at paddy soil (fine loamy, mixed, nonacid, mesic, family of Aeric Fluventic Haplaquepts) in National Institute of Crop Science (NICS), Korea in 2006 to 2007. The variation of soil temperature in green manure plots was lower than without green manure (control) during spring season (April to May). The temperature variation of no tillage plot (broadcast before rice harvest) was the lowest among treatments. After green manure cropping, the soil bulk density and porosity ratio were improved at the top soil. The production of green manure was the highest athairy vetch and barley mixture plot by partial tillage. However, mixture treatment had no improvement on soil organic matter. After rice cropping with green manure application, soil quality was improved such as soil physical properties except mixture treatment. Therefore, we suggest that soil quality should be improved by green manure cultivation under rice-based cropping system.
( Jong Min Jeon ),( Rajesh Thangamani ),( Eun Jung Song ),( Hyuk Won Lee ),( Hong Weon Lee ),( Yung Hun Yang ) 한국미생물 · 생명공학회 2013 Journal of microbiology and biotechnology Vol.23 No.2
Corynebacterium glutamicum is one of the well-studied industrial strain that is used for the production of nucleotides and amino acids. Recently, it has also been studied as a possible producer of organic acids such as succinic acid, based on its ability to produce organic acids under an oxygen deprivation condition. In this study, we conducted the optimization of medium components for improved succinate production from C. glutamicum under an oxygen deprivation condition by Plackett-Burman design and applied a response surface methodology. A Plackett-Burman design for ten factors such as glucose, ammonium sulfate, magnesium sulfate, potassium phosphate (K2HPO4 and KH2PO4), iron sulfate, manganese sulfate, biotin, thiamine, and sodium bicarbonate was applied to evaluate the effects on succinate production. Glucose, ammonium sulfate, magnesium sulfate, and dipotassium phosphate were found to have significant influence on succinate production, and the optimal concentrations of these four factors were sequentially investigated by the response surface methodology using a Box-Behnken design. The optimal medium components obtained for achieving maximum concentration of succinic acid were as follows: glucose 10 g/l, magnesium sulfate 0.5 g/l, dipotassium phosphate (K2HPO4) 0.75 g/l, potassium dihydrogen phosphate (KH2PO4) 0.5 g/l, iron sulfate 6 mg/l, manganese sulfate 4.2 mg/l, biotin 0.2 mg/l, thiamine 0.2 mg/l, and sodium bicarbonate 100 mM. The parameters that differed from a normal BT medium were glucose changed from 40 g/l to 10 g/l, dipotassium phosphate (K2HPO4) 0.5 g/l changed to 0.75 g/l, and ammonium sulfate ((NH4)2SO4) 7 g/l changed to 0 g/l. Under these conditions, the final succinic acid concentration was 16.3 mM, which is about 1.46 fold higher than the original medium (11.1 mM) at 24 h. This work showed the improvement of succinate production by a simple change of media components deduced from sequential optimization.
Numerical Prediction of Maximum Load-Carrying Capacity of Cracked Alloy 690TT Steam Generator Tubes
Jeon, Jun-Young,Kim, Yun-Jae,Kim, Jin-Weon,Lee, Kuk-Hee,Kim, Jong-Sung AMERICAN SOCIETY MECHANICAL ENGINEERS 2016 Journal of Pressure Vessel Technology Vol.138 No.4
<P>This paper presents a finite element (FE) simulation technique to predict maximum load-carrying capacity of cracked steam generator tubes and its application to Alloy 690TT tubes. The simulation method is based on a simplified version of the stress modified fracture strain model. The damage model is determined from tensile test and one cracked tube test data. Predicted maximum pressures are compared with 23 test data of axial through-wall and surface cracked Alloy 690TT steam generator tubes. Comparison with experimental data shows good agreement.</P>