3종의 가지과식물종자유중(料植物種子油中)의 Sterol 조성

정태명,양민석,나효환 한국농화학회 1978 Applied Biological Chemistry (Appl Biol Chem) Vol.21 No.1

Sterol compositions of three solanaceous plant seed oils i.e., tobacco(Nicotiana tabacum L.), datum (Datura stramonium L.) and Chinese lycium (Lycium chinerise Mill.) were analyzed by thin layer chromatography, gas liquid chromatography and gas liquid chromatography-mass spectrometry. Cholesterol, cholest-7-enol, campesterol, 24-methylenecholesterol, stigmasterol, sitosterol, and 28-isofucosterot were identified in 4-des-methylsterol fraction. 31-Norlanost-8-enol, 4α-methylcholest-8-enol, lophenol, 31-norlanosterol, obtusifoliol, 31-norcycloartenol, cyloeucalenol, gramisterol (24-methylenelophenol), and citrostadienol in 4-monomethylsterol fraction, and lanost-8-enol, cycloartanol, lanosterol, β-amyrin, 24-methylenelanost-8-enol, cycloartenol, lupeol and 24-methylenecycloartanol in 4,4-dimethylsterol fraction were identified respectively.

[특집④ 제언] 전통적 콘텐츠 생산방식 버릴 때

정태명 (사)방송기자연합회 2014 방송기자 Vol.16 No.-

HTTP Get Flooding 기술을 이용한 APT(지능적 지속 위협)공격 도구의 설계와 구현

정태명,천우봉,박원형 한국컴퓨터교육학회 2011 컴퓨터교육학회 논문지 Vol.14 No.6

최근 사이버공격을 보면 전세계 해킹공격 트랜드로 APT 공격이 지속 발생하고 있다. 특히, HTTP Get Flooding 공격은 사이버공격기법 중 가장 효과적인 공격 중 하나이다. 기존의 HTTP Get Flooding 공격 기술에 대해 알아보고 ATP 공격 특성을 결합한 새로운 공격 기술을 제안한다. 본 논문은 HTTP Get Flooding 기술을 이용하여 효과적인 APT 공격 도구 제작 관한 내용이다. 이 공격도구를 통해 지속적인 DDoS 공격에 대한 적극적 방어 대책이 필요하다. As we can see from the recent cyber attack, APT(Advanced Persistent Threat) is trend of hacking attack in the World. Thus, HTTP Get Flooding attack is considered to be one of the most successful attacks in cyber attack method. In this paper, designs and implements new technique for the cyber attack using HTTP get flooding technology. also, I need a defence about DDoS attack through APT Tools.

인터넷에서의 시스템 보안은 어떻게 할 것인가

정태명,Jeong, Tae-Myeong 한국정보통신집흥협회 2000 정보화사회 Vol.142 No.-

미강유중(米糠油中)의 Sterol조성(組成)

정태명,양민석,하봉석,Jeong, Tae-Myoung,Yang, Min-Suk,Hah, Bong-Suk 한국응용생명화학회 1984 Applied Biological Chemistry (Appl Biol Chem) Vol.43 No.3

미강유(米糠油)의 부(不)검화물(化物)을 분석(分析)하여 sterol조성(組成)을 살펴본 결과(結果)는 다음과 같았다. 4-Desmethylsterol로서는 10개가 동정(同定)되었으며 이 중(中) sitosterol이 주성분(主成分)을 이루고 있었다. 2개의 소량성분(少量成分)인 ${\Delta}^7$-stigmastenol(3%)과 ${\Delta}^7$-avenasterol(1%)를 제외(除外)하면 모두가 ${\Delta}^5$-sterol였으며 소위(所謂) ${\Delta}^5$형(型) sterol분포(分布)를 보이고 있었다. 4-monomethylsterol fraction에서는 9개가 확인(確認)되었으나 cycloeucalenol, citrostadienol, gramisterol가 주성분(主成分)이었다. 환계(環系)의 구조가 다양(多樣)하여 sterol의 생합성경로(生合成經路)의 중간단계(中間段階)임을 보여주고 있다. 4,4-Dimethylsterol(triterpene alcohol)로서는 4개가 동정(同定)되었으나 이들은 모두 9,19-cyclopropanering을 가지고 있다. 이들중(中) sterol생합성(生合成)의 초기단계(初期段階)의 물질(物質)인 cycloartenol와 24-methylenecyclo-artenol가 이 fraction의 96%를 점(占)하고 있는 것으로 봐서 미(米)강의 4,4-dimethylsterol는 짧은 경로(經路)를 거쳐 쉽게 4-monomethylsterol로 전환(轉換)되는 것 같다. Side chain에서 E-, Z-관계(關係)인 이성체(異性體)가 4-desmethylsterol로서는 fucosterol와 ${\Delta}^5$-avenasterol가 그리고 4-monomethylsterol로서는 28-isocitrostadienol와 citrostadienol로서 각각 1쌍식이 검출(檢出)된 것으로 미루어 볼때 sterol의 생합성과정(生合成過程)에서 side chain에서 보다 환계(環系)에서 먼저 변환(變換)이 일어나는 것으로 보아진다. The unsaponifiable from rice bran oil was fractionated into 4-desmethyl-'4-monomethyl- and 4, 4-dimethylsterol (triterpene alcohol) fraction by thin layer chromatography (TLC), and sterol composition of the each fraction was analyzed by gas liquid chromatography(GLC). The sterol peaks not well separated by GLC were further fractionated by $AgNO_3-TLC$, then analyzed using GLC. Each components in the three sterol fractions were identified by GLC and gas chromatography-maps spectrometry. As the results, ten sterols were confirmed as 4-desmethylsterol, nine as 4-monomethylsterol and four as 4, 4-dimethylsterol. Such uncommon phytosterols in higher plants as fucosterol, 24-ethyllophenol, 4${\alpha}$-methylstigmasta-7, 25-dienol and 28-isocitrostadienol were detected in rice bran oil and the biosynthetic pathways of the phytosterols were deduced with all the identified sterols.

韓國産 대나무類의 化學的 成分調査에 관한 硏究 (第1報) 智異山 갓대의 組成分析에 對하여

辛東韶,鄭泰明 진주농과대학 1962 진주농과대학 연구논문집 Vol.- No.1

1. 갓대의 年齡別에 따른 各組成分이 一般 竹類의 그것과 가까운 傾向을 나타내지 않았다. 水分은 竹類에 있어서 1年生이 大體로 많은데 供試材 갓대는 그렇지 않았다. 2. 全갓대를 通하여 그의 特徵은 灰分이 많음과 同時에 1年生이 많았다. 3. 갓대의 冷水 및 溫水抽出物은 年齡別에 따라 各各 달랐고 日本産 Sasa 보다 어느 것이든 그 量이 조금 많았다. 1% NaOH 抽出物은 木材나 대나무에 비해 많은 것이 特徵이다. Alcoho-Benzene 抽出物은 年齡間 平均 5.20%이 었다. 4. 갓대의 重要成分中 年齡別 Cellulose는 大差가 없었고 全體的으로 Lignin의 量이 比較的 적었다. 5. 粗蛋白質은 2年生과 3年生이 同等하였고 1年生이 많은 값을 갖이고 있다. 木材 0.7∼1.0% 前後에 比하면 갓대가 平均的으로 많은 것이다. There is no report on the chemical components of bamboo produced in Korea. First of all, we investigated the kat-tae (Sasa-amorpha chiisanensis Nakai) grown in the College Experimental Forest which is located in Samjang-myun, Sanchun-gun, Kyungsangnam-do. Up to date, the kat-tae is little used and is regarded as a kind of obstacle in the way of silviculture and forest management, and as yet we have scarcely done any research in connection with it. It is a real factor that the growing stock and increment of kat-tae is comparable with bamboo, so can be valuable for meeting the scarcity of pulp and fibre materials. Realizing the above mentioned facts, it is important to research into the chemical compositions of kat-tae as a matter of utilization. The method of analysis employed was the wood analyses. The time in which kat-tae was obtained was Nov., 9, 1961, from the above said place, and the number of samples was 90 specimen of kat-tae from first, second, third years each. The portion of the culm from which was taken is the part of 20-40cm from the ground. After air-drying, 60-80 mesh fraction is used for analyses. Results obtained are shown in table 10. The values given are averages of two or five analyses. 1. The composition of kat-tae between ages does not have a similar tendency to that of bamboo. One-year old of bamboo is generally rich in moisture content, while, in case of kat-tae, the moisture content of three-year old was higher than that of one-year old in the samples tested after being air-dryed. 2. The ash of the kat-tae is characterized by the facts that its value is much higher in comparition with bamboo, at the same time the value of one-year old kat-tae is much more than the two or three-year old. 3. The cold water and hot water extractives vary from one-year old to three-year old, as are shown in table 10. The high content of solubility in 1% NaOH is characteristic os kat-tae, compared with wood and bamboo. The alcohol-benzene extractives contain average of 5.20% between ages. 4. It reveals no apparent differences by aging in the total cellulose value of kat-tae, where as their lignin content is less than that of wood and bamboo. 5. The protein value of 2-year old and 3-year old is approximately equal, but the one-year old has relatively high value. It is established that kat-tae is high in protein value compared with no less than 0.7-1.8 of wood.

인터넷 모범상점 인증제도와 보안관리

정태명,Jeong, Tae-Myeong 한국정보통신집흥협회 1999 정보화사회 Vol.133 No.-

3-아실-1.3-티아졸리딘-2-티온을 이용한 아미드 및 아미드유도체 합성

박기훈,정태명 慶尙大學校 1989 論文集 Vol.28 No.2

3-아실 티아졸리딘-2-티온(ATT)의 가아민 분해반응은 아미드 및 아미드 유도체 합성에 효과적으로 이용 되었다. ATT와 아미노 알콜이 반응할때 화학 선택적인 반응이 관찰되었다. ATT를 이용하여 몇종의 아미드 알카리오디 화합물과 Li에 민감한 ionophore를 합성 하였다. 아울러 ATT유도체가 페니실린에 민감한 Bacillus Substilus에 생물학적 활성을 나타내었었다.

들깨의 含油量 定量에 關한 實驗

李東右,鄭泰明 진주농과대학 1964 진주농과대학 연구논문집 Vol.- No.3

1. Soxhlet 裝置를 使用하여 들깨 種子의 含油量 定量에 있어서 實用的 最短抽出時間을 알고자 時間別抽出實驗을 하였다. 2. 들깨 種子의 油分抽出은 4時間程度의 抽出處理로서 實用的인 含油量을 定量할 수 있다고 생각된다. 1. The experiments were carried out to determine the reasonable extraction of oil content on perilla seeds using Soxhlet's extractor at six different time intervals. 2. From the results the extraction of the four hour period was sufficient for the practical work on the determination of oil content in perilla seeds.

A Highly Stereoselective Reaction in Aminolysis of 3-Acyl-4-(S)-isopropyl-1,3-thiazolidine-2-thione with Racemic Amines

정태명,박기훈,Tae Myoung Jeong,Ki Hun Park Korean Chemical Society 1988 대한화학회지 Vol.32 No.6

키랄 보조제가 붙어있는 3-acyl-4(S)-isopropyl-1,3-thiazolidine-2-thione[4(S)-AITT]을 라세미 아민과 가아민 분해반응을 시켰을때 광학활성을 갖는 아미드(S-excess)와 아민(R-excess)이 얻어지는 입체 선택적인 반응이 관찰되었다. 이와같은 입체 선택적인 반응은 macrocyclic diamide, macrocylic sperimidine alkaloid, peptide 합성에 이용될 수 있다. 가아민 분해반응의 속도는 아민의 입체적인 영향을 많이 받았고 반응이 종료점은 노락색의 소실로 쉽게 관찰되었다. 4(S)-AITT는 4(S)-isopropyl-1,3-thiazolidine-2-thione과 carboxylic acid로부터 얻었다. A chiral recognition was observed in aminolysis of 3-acyl-4(S)-isopropyl-1,3-thiazolidine-2-thione by racemic amine to give an optically active amide (S-excess) and amine (R-excess). This procedure can be applied to synthesis of macrocyclic diamide macrocyclic spermidine alkaloid, and peptide. The rate of this aminolysis is remarkably affected by steric surrounding; completion of reaction can be easily judged by the disappearance of the original yellow color of 4(S)-AITT. These features of the aminolysis suggested a potential recognition racemic amines by a chiral 4 (S)-AITT derivative. Thus 4 (S)-AITT was synthesized from 4 (S)-isopropyl-1, 3-thiazolidine-2-thione and carboxylic acids.