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국내 자생 배향초의 화학형 분류와 수집지역에 따른 화학형의 분포
채영암 서울대학교 농업개발연구소 1999 농업생명과학연구 Vol.3 No.-
Equilibrium headspace analysis connected with gas chromatography/mass spectrometry was used to identify volatile compounds released from the leaves of 73 individual plants of Agastache rugosa collected from 11 sub-regions in South Korea. Chemometric investigation of the infra-specific variability in volatiles led to identify five main chemotypes; elaborated estragole (Type 1) as the major component, and the other four chemotypes, characteristically contain monoterpenois compounds, isomenthone (Type 2), pulegone (Type 3), limonene (Type 4) and isomenthone+pulegone (Type 5), In these chemotypes, pulegone, limonene and isomenthone+pulegone types revealed that the diversity of new chemotypes were present in Korea.
南基桓,金容岩 충북대학교 엽연초연구소 1988 煙草硏究 Vol.13 No.-
This experiment was conducted with three varieties (Hicks, Burley 21, Sohyang) to analyze growth kinetics by means of growth function involving its inflection points of various phases of growth curve in total dry accumulation. The baric growth data were obtained by harvest method at interval of ten days from transplanting to hundred days and analyzed by differential, regression equation, and three model s of growth phases. Three growth phases were classified by two inflection points of growth acceleration and composed of logarithmic growth phase, linear growth phase, and asymptotic growth phase.
6개 원소로 이루어진 짝이중결합화합물과 R_2AsCI와의 반응
주완철,이용암,유응철 성균관대학교 기초과학연구소 1986 論文集 Vol.37 No.2
From the reactions of orthohydroxy-6-membered conjugated system, benzil-mono-orthohydroxyanil, with Me_2AsCl and chloro [Toluene-(2, 3)-dithiolato(2)] arsenic (Ⅲ), reaction products was isolated. From the IR and NMR-spectroscopic analysis for these reaction products, it is confirmed that reaction products are charge-transfer complexes of As. From these results, we found that the chemical behaviour of trivalent As is not analogous to trivalent P.
카드뮴 장기간 투여에 따른 흰쥐의 신장내 카드뮴 축적량과 뇨중 배설량의 변화
송인순,조영채,김수영,박암,손경선,이태용,이동배 大韓産業醫學會 1997 대한직업환경의학회지 Vol.9 No.1
This study was performed to compare the cadmium accumulation levels in kidney with urinary cadmium excretion levels according to the duration of cadmium exposure in rats. Total 120 male rats, 6 weeks of age, were administered 0.5 mg/day of Cd to subcutaneously, intraperitoneally and orally 6 times per week for 12 weeks. The animals were sacrificed in the 1st day of 2nd, 4th, 6th, 8th, 10th and 12th week after beginning of cadmium administrations. Body weight, hematologic values, enzyme activities, renal Cd levels, urinary Cd and proteins were calculated and each value was compared according to the Cd administration routes. The Cd accumulation levels in the kidney of rats increased remarkably for 6-8th weeks which were experimented and urinary Cd excretion levels and urinary protein levels showed the tendency of increasing with the Cd accumulations in kidneys, especially in the subcutaneous injected rats. On the other hand, there was a significant positive correlation among the total Cd administration, the Cd accumulation in the kidneys, the urinary Cd excretion and protein.
Yong Am Chae(蔡永岩),Jung Il Lee(李正日) 한국육종학회 1985 한국육종학회지 Vol.17 No.3
Past progress of varietal improvement and current systems for seed production and distribution of several important industrial crops were discussed. Main problems for seed production and distribution appeared in this review are legal restriction of the number of industrial crops involved in the major crop seed law, registered seed production without financial support by govermental base, two-way systems for distribution of certified seed and incomplete seed production systems for F₁ variety of rape. The alternative ways to solve the problems are the legal involvement of more industrial crops needed pure seed production, financial support by governmental base for seed production like as rice and corn, unification of certified seed distribution systems, and F₁ seed production of rape by seed company or by governmental institution.
김용진,이주홍,박용기,김진도,송근암,서경덕,임권조,구대영,이경윤,신용훈,감복규 대한소화기내시경학회 1998 Clinical Endoscopy Vol.18 No.3
Gastritis Cystica Profunda is a rare condition showing multiple small cysts in the mucosa and submucosa of the stomach. These lesions have been found not only at the site of a gastroenterostomy but also in tbe stomchs of patients without any previous surgery. Recently, We witnessed a 56-year old e wale gastritis cystica profunda who had not undergone previous gastric surgery. The UGI and EGD revealed a 3.0 * 4.5 cm sized submucosal mass on the posterior wall of the antrum, and endoscopic ultrasonography(EUS) discovered a thickening of the third layer in which well-defined, round and nearly anechoic areas with posterior enhancement were gathered. They were thought to be cystic lesions. We report a case of gastritis cystica profunda without having had any previous surgery, the diagnosis was made based on findings from the EUS and histologic findings through surgery.
Jang Ho Am,Park Ki Beom,Kim Bo Bae,Ali Mohammadie Kojour Maryam,Bae Young Min,Baliarsingh Snigdha,Lee Yong Seok,Han Yeon Soo,Jo Yong Hun 한국곤충학회 2020 Entomological Research Vol.50 No.12
Defensins are a major family of antimicrobial peptides that serve as the innate immune defense of both vertebrates and invertebrates. Due to their antimicrobial, chemotactic, and regulatory activities, Defensins have been exploited for their therapeutic potential. Insect Defensins are cysteine‐rich and contain an N‐terminal loop, α‐helix, and antiparallel β‐sheet, forming a “cysteine‐stabilized alpha beta (CSαβ)” or “loop–helix‐sheet” structure. In this study, we identified the full‐length open reading frame (ORF) sequences of Defensin (TmDef) and Defensin‐like (TmDef‐like) genes from the mealworm beetle Tenebrio molitor using in silico methods. TmDef and TmDef‐like genes encode the peptides of 72 and 71 amino acid residues, respectively. TmDefensin is comprised of a Defensin domain and the TmDefensin‐like is comprised of a signal peptide of 21 amino acid residues. Phylogenetic analysis revealed close similarities of TmDefensin with the Defensin of Acalolepta luxuriosa of the longhorn beetle family. The expression of TmDef mRNA was found to be greater than that of TmDef‐like mRNA and was mostly expressed in the pupal and adult stages. Tissue distribution showed high expression of TmDef‐like mRNA in larval hemocytes, gut, integument, and fat body, while in adults, the expression was high in gut and hemocytes. Following bacterial and fungal stimulation in vivo, TmDef was upregulated at 24 h post‐infection in whole body, fat body, and hemocytes of the larvae. Even TmDef‐like mRNA was upregulated in the gut and hemocytes at 12 and 9 h post‐infection respectively. These results suggest that TmDef and TmDef‐like genes play important roles in protecting T. molitor from microbial contact.
Jang Ho Am,Park Ki Beom,Kim Bo Bae,Ali Mohammadie Kojour Maryam,Bae Young Min,Baliarsingh Snigdha,Lee Yong Seok,Han Yeon Soo,Jo Yong Hun 한국곤충학회 2020 Entomological Research Vol.50 No.9
Antimicrobial peptides (AMPs) are effector candidates that elicit humoral immunity in invertebrates. AMPs facilitate bacterial clearance by either physically disrupting the microbial membranes or the intracellular targets. In the Coleopteran pest, Tenebrio molitor, transcriptional regulation of AMPs has been studied in the context of innate immune signaling cascades and antimicrobial immunity. Here, we report the transcriptional response of three AMP genes, Coleoptericin A, B, and C (TmCole A, B and C) in T. molitor in response to bacterial (Escherichia coli, Staphylococcus aureus), and fungal (Candida albicans) challenges. These genes were expressed essentially in the gut and hemocytes followed by the integument tissue of the T. molitor larva. Further, these genes were highly expressed in the late-larval, pupal, and early adult stages. Furthermore, while all of these transcripts were highly upregulated in the fat body and Malpighian tubules after bacterial challenge, TmCole B and TmCole C were induced in the gut after E. coli challenge. Fungal stimulation was not required for the upregulation of the transcription of Coleoptericin genes in T. molitor.