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진동만과 가막만에 서식하는 잘피 개체군의 생장 동태 및 탄소고정량 추정
김태환,박상률,김영균,김종협,김승현,김정하,정익교,이근섭,Kim, Tae-Hwan,Rark, Sang-Rul,Kim, Young-Kyun,Kim, Jong-Hyeob,Kim, Seung-Hyeon,Kim, Jeong-Ha,Chung, Ik-Kyo,Lee, Kun-Seop 한국조류학회(藻類) 2008 ALGAE Vol.23 No.3
Since seagrasses in the coastal and estuarine ecosystems achieve high levels of production, they require high inorganic carbon and nutrient incorporation. Thus, seagrasses may play a significant role in carbon and nutrient cycling in the coastal and estuarine ecosystems. To examine growth dynamics of Zostera marina L. environmental factors such as underwater irradiance, water temperature, and salinity, and biological parameters such as shoot density, biomass, shoot morphology, and leaf productivity were measured in two bay systems (Jindong Bay and Gamak Bay) on the southern coast of Korea. While underwater irradiance did not show distinct seasonal trend, water temperature at both sites exhibited clear seasonal trend throughout the experimental period. Shoot density increased dramatically during winter due to the increased seedlings through germination of seeds in Jindong Bay and due to the increased lateral shoots in Gamak Bay. Eelgrass biomass increased during winter and decreased during summer. Maximum biomass in Jindong Bay and Gamak Bay was 250.2 and 232.3 g dry weight m–a2, respectively. Carbon incorporation into the eelgrass leaf tissues was estimated from productivity and leaf tissues carbon content. The calculated annual carbon incorporations at the Jindong Bay and Gamak Bay sites were 163 and 295 g C m–`2 y–`1, respectively. This high carbon incorporation into seagrass tissues suggests that seagrass habitats play an important role as a carbon absorber in the coastal and estuarine ecosystems.
하치조신경 전달 마취 시 알칼리화 된 리도카인의 마취 효능에 관한 임상적 연구
김태환,김경욱,김철환,Kim, Tae-Hwan,Kim, Kyung-Wook,Kim, Chul-Hwan 대한악안면성형재건외과학회 2005 Maxillofacial Plastic Reconstructive Surgery Vol.27 No.3
Inferior alveolar nerve block using lidocaine is the most frequent local anesthetic method in the dental treatment, but clinically it is not always successful. The 2% lidocaine cartridge has been used commonly in dental anesthesia. It contains vasoconstrictor and antioxidant, which presents low pH which provides chemical stability and longer shelf life. But alkalinized local anesthetics has less tissue trauma, easier dissociation of the non-ionized base which penetrates nerve sheath, rapid onset and more intensity. In this study, in inferior alveolar nerve block, alkalinized lidocaine using sodium bicarbonate (experimental group) is compared with plain lidocaine (control group) about injection pain, anesthetic onset, duration and postinjection discomfort. In inferior alveolar nerve block, alkalinized lidocaine using sodium bicarbonate showed lower injection pain. There was significant difference statistically from plain lidocaine(p=0.019). Comparing with plain lidocaine, alkalinized lidocaine produced more rapid onset (lip & pulp anesthetic onset), there was no significant difference(p>0.05). but there was boundary significance (0.05<p=0.094<0.1). Alkalinized lidocaine produced higher anesthetic success rate than plain lidocaine, there was significant difference (p=0.016). There was no significant difference in duration and postinjection discomfort between alkalinized and plain lidocaine(p>0.05). These results suggest that addition of sodium bicarbonate to 2% lidocaine(1:100,000 epinephrine) for inferior alveolar nerve block is more effective for reduction of injection pain and onset time.
담배거세미나방과 파밤나방에 활성이 있는 Bacillus thuringiensis subsp. aizawai CAB109 균주의 특성
김태환,김다아,김기수,서미자,윤영남,유용만,Kim, Tae-Hwan,Kim, Da-A,Kim, Ki-Su,Seo, Mi-Ja,Youn, Young-Nam,Yu, Yong-Man 한국응용곤충학회 2009 한국응용곤충학회지 Vol.48 No.4
국내에서 분리된 Bacillus thuringiensis subsp. aizawai CAB109균주가 난방제 해충으로 알려진 담배거세미나방과 파밤나방에 동시에 높은 독성을 보이는 것으로 나타났다. B.t. CAB109 균주의 활성을 평가하기 위해 혈청형이 aizawai이면서 미생물농약으로 시판중인 TB-WP제품 및 SC제품과의 살충활성을 비교한 결과, B.t. CAB109균주, TB-WP제품, SC제품은 담배거세미나방 2령충에 대한 반수치사농도($LC_{50}$)가 각각 $1.3{\times}10^5cfu/ml$, $2.3{\times}10^6cfu/ml$, $5.2{\times}10^5cfu/ml$으로 나타났고 파밤나방 2령충에 대한 반수치사농도는 $1.8{\times}10^4cfu/ml$, $1.3{\times}10^6cfu/ml$, $1.5{\times}10^6cfu/ml$으로 나타나 두 종 해충 모두에서 B.t. CAB109 균주가 독성이 더 높은 것을 볼 수 있었다. B.t. CAB109균주가 이미 알려져 있는 aizawai와 비교해 차이가 나는 새로운 유전자를 소유하는지 확인하기 위해 Plasmid DNA를 추출하여 전기영동 한 결과 B.t. subsp. aizawai HD-133과 다른 패턴을 보이는 것을 확인 할 수 있었고 Cry1-Cry5의 primer를 사용하여 PCR을 진행한 결과 B.t. subsp. aizawai CAB109균주는 Cry1Aa, 1Ab, 1C, 1D를 B.t. subsp. aizawai HD-133은 Cry1Aa, 1Ab를 가지고 있음을 확인 할 수 있었다. Bacillus thuringiensis subsp. aizawai CAB109 isolated in Korea is known active against Spodoptera sp.. Especially, B. thuringiensis aizawai CAB109 isolates showed 100% mortality against Spodoptera litura and Spodoptera exigua. To screen highly active B. thuringiensis, the pathogenicity of B. thuringiensis CAB109 was compared with that of commercialized B. thuringiensis products. $LC_{50}$ values of CAB109, product TB-WP and product SC strains of B. thuringiensis were $1.3{\times}10^5$, $2.3{\times}10^6$ and $5.2{\times}10^5\;cfu/ml$ against the 2nd larva of S. litura and $1.8{\times}10^4$, $1.3{\times}10^6$ and $1.5{\times}10^6\;cfu/ml$ against the 2nd larva S. exigua, respectively. To determine new gene's existence and absence, the plasmid DNA was extracted, and compared to that of B.t. aizawai HD-133. Both B. thuringiensis were not like plasmid DNA pattern. PCR technique was used to predict both plasmid DNA's cry gene. PCR products analysis showed that B.t. CAB109 harbor Cry1Aa, Cry1Ab, Cry1C and Cry1D and B.t. HD-133 has Cry1Aa and Cry1Ab, respectively.
김태환,김현호,임은철,김은이,Kim, Tae-Hwan,Kim, Hyun-Ho,Lim, Eun-Chul,Kim, Eun-Yl 사상체질의학회 2005 사상체질의학회지 Vol.17 No.1
1. Objectives The purpose of this study is to give an account of the effects of the Korean herbal medicine therapy which is based on the Sasang constitutional medicine for the patient who has suffered from Soeum-disease(少陰病). 2. Methods The subject is a 73-year old woman who has the symptoms caused by sequella of cerebral infarction and depression mood which are headache, dizziness, ostalgia, chilling, anorexia, general weakness. 3. Results We have diagnosed her as Soeumin(少陰人), and have prescribed Kwankae bujaijung-tang(官桂附子理中湯). 4. Conclusions The consequence is the accompanied headache, dizziness, ostalgia, chilling, anorexia, and general condition has improved.
침술에 의한 합병증으로 발생한 저작간극 농양: 증례보고 및 문헌 고찰
김태환,이춘호,박준우,박영욱,김민근,김성곤,Kim, Tae-Hwan,Lee, Choon-Ho,Park, Jun-Woo,Park, Young-Wook,Kim, Min-Keun,Kim, Seong-Gon 대한악안면성형재건외과학회 2009 Maxillofacial Plastic Reconstructive Surgery Vol.31 No.6
The masticatory space abscess caused by the acupuncture is a rare condition. A 27-year-old Korean man presented right buccal and submandibular space abscess induced by the acupuncture during his treatment of the temporomandibular disorder. The case was presented with review of literatures.
김태환,틸리나,김재훈,이광녕,박종현,김철중,이종수,Kim, Tae-Hwan,Herath, Thilina U. B.,Kim, Jae-Hoon,Lee, Kwang-Nyeong,Park, Jong-Hyeon,Kim, Chul-Joong,Lee, Jong-Soo 한국미생물학회 2017 미생물학회지 Vol.53 No.4
구제역 바이러스 연구가 BSL-3 시설에 제한되기 때문에 여러 가지 소독제나 항바이러스 제제에 대한 효력 및 효능 평가가 쉽게 이루어질 수 없다. 따라서 구제역 바이러스와 계통학적으로 유사한 bovine rhinovirus (BRV)와 human rhinovirus (HRV)의 특성을 열, pH 그리고 여러가지 소독제를 이용하여 평가하였다. 그 결과 구제역 바이러스의 성상과 매우 흡사한 것을 확인할 수 있었다. 이러한 결과로 BRV와 HRV는 구제역 바이러스를 대체할 수 있는 모델 바이러스로 이용이 가능하다. Researchers have comparatively fewer opportunities to conduct experiments on foot-and-mouth disease virus (FMDV), owing to the limited availability of biosafety level 3 facilities. Bovine rhinovirus (BRV) and human rhinovirus (HRV), which are genetically closely related to FMDV, have been evaluated in this study as model viruses for FMDV. To discover whether BRV and HRV have similar physicochemical properties as FMDV, virus susceptibility tests have been performed in different physical (pH and heat) and chemical (acidic/alkaline solutions and commercial disinfectants) conditions in vitro. Our data revealed that the physicochemical characteristics of BRV and HRV were nearly similar to those of FMDV.
김태환,백민호,이태형,Kim. Tae-Hwan,Back. Min-Ho,Lee. Tae-Hyung 한국방재학회 2009 한국방재학회 학술발표대회논문집 Vol.2009 No.1
방재교육의 수요증가에 따라 전문화가 요구되는 상황에서 방재학의 정체성 확립과 체계적인 교육을 위한 방재학의 표준교재가 요구되고 있다. 방재학 교재 프로그램 개발을 통하여 산 학 관 상호 연계와 방재학의 발전을 모색하고 방재관련 교과목을 개발하여 제시하고자 한다.
김태환,이차수,Kim, Tae-hwan,Lee, Cha-soo 대한수의학회 1990 大韓獸醫學會誌 Vol.30 No.4
In order to observe the distribution of mast cell on the stages of the mammary carcinogenesis, the numerical changes of mast cells in the mammary tumor development in rats treated with DMBA and compound 48/80 have been investigated by the light microscope. The results observed were summarized as follows: The appearance of tumor were not observed during the whole experimental period in the rats of the control group received injection of sterile saline, but tumors appeared in 100% of the animals, the tumor induction time that represented the number of days elapsing between the 3rd DMBA administration until a first tumor became $10{\times}10mm$ in diameter was $42.5{\pm}4.7$ days and the mean number of tumor masses per rat was $3.4{\pm}1.2$ in the DMBA treated group. And the majority of the DMBA-induced mammary neoplasms were appeared cervical mammary gland and thoracic mammary gland. The histological findings of mammary carcinoma were recognized adenocarcinoma in the DMBA treated group. Mast cells were distributed within the adipose tissues and the interglandular connective tissue in the control, but found to be randomly dispersed within the tumor cell masses, in the connective tissues adjacent to the periphery of the tumor, the adipose tissues and the subcutaneous tissues contiguous to the region of tumor development in the DMBA treated group. Numerical alterations of mast cells were observed in the mammary tumors that separated into three major classes of tumors: hyperplasia, atypical hyperplasia and carcinoma. The number of mast cells were distributed in the connective tissues adjacent to the mammary gland was $45.3{\pm}3.4$ cells in the control group, but was $50.2{\pm}4.9$ cells, $126.7{\pm}10.5$ cells and $340.3{\pm}19.2$ cells according to each stages of mammary tumorigenesis in the DMBA treated group.