기-액흐름 연속누출에 의한 개방공간 증기운 폭발사고를 중심으로 중,소규모 사업장을 위한 사고 영향평가 방법

장서일,이헌창,조지훈,김태옥 한국산업안전학회 2003 한국안전학회지 Vol.18 No.1

For the unconfined vapor cloud explosion(UVCE) accident by the continuous release of gas-liquid flow of various saturated liquids in a vessel at ground level, overpressures were estimated by TNT equivalency model with two estimation methods, such as UVCE Ⅰ model based on a constant release time and UVCEⅡ model based on a real travel time of vapor by dispersion and analyzed with various release conditions. As a simulation result, the simple, easy, and correct method of evaluation of consequences of the UVCE accident was proposed by using consequences of UVCEⅠ model and correlation equations for differences of overpressures between UVCE models, so that this evaluation method could be used easily in the small and medium size enterprises without using the dispersion model.

煙草를 加害하는 진딧물에 關한 硏究

安長憲 충북대학교 엽연초연구소 1982 煙草硏究 Vol.9 No.-

This experiment was conducted to study the control methods of aphids injuring to tobacco plants. 1.The most injurious aphids against tobacco were M yzus percicae(84.67%) and Aphis gossypii(9.90%). 2.Most insecticides used in this experiment showed remarkable killing effects above 95% on each aphids. 3.Harmoniaaxyridis among ladybug of prey ate 44.54 aphids a day, and especially about 100 aphids during old age of Harmonia axyridis. 4.Spider species in tobacco field were very simple, occupied about 90% of all species by Pardosa sp and Pardosa astrigera.

昆忠의 人工飼料 開發에 關한 硏究

安長憲,金周읍 충북대학교 농업과학기술연구소 1988 農業科學硏究 Vol.6 No.1

In order to develop additives to silkworm artificial diet, total of 70 herb medicines and other medicinal compounds were tested for feeding response and growth promoting effects. The results were summarized as follows : 1.Only Seontae (Oncotympana coreana KATO) showed significantly positive effects on feeding and growth promoting, while Jinpi (Citrus unshiu Marc.), Whanggi(Astragalus membranaceus Bunge.), Mawhang(Ephedra sinica Stapf.) and Pilbal(Piper longun L.) appealed to be more or less effective. The other materials tended to suppress feeding. 2.In general, the survival ratio was higher where tested compounds showed positive effects on feeding and growth. 3.Protein and amylase electrophoresis of hemolymph and digestive juice were not significantly different among herb medicines and other medicinal compounds.

API-581에 의한 위험기반 검사에서 가연성 물질의 사고결과 분석

이헌창,유준,김환주,장서일,김태옥 한국안전학회 2004 한국안전학회지 Vol.19 No.4

Consequence analysis of flammable materials that affect to a risk of facilities was studied at the risk based inspection using API-581. We found that consequence areas (damage area of equipment and fatality area) by release accident of flammable materials showed high value for the case of liquid phase and auto-ignition likely, and that consequence areas of flammable gases decreased as temperature increased and the pipe diameter and pressure decreased at continuous release.

거미류의 生態에 관한 硏究 : 인삼밭 거미相에 관한 硏究

安長憲 충북대학교 농업과학기술연구소 1992 農業科學硏究 Vol.10 No.1

This surrey was conducted to investigate the distribution and seasonal fluctuation for the spiders of the Ginseng fields in chung-buk The Results obtained are sammariyed as follow. 1. The spiders collected in the Ginseng fields were 19 species belonging 20P families. 2. The Three species such as Theridion sp. Pardosa astrigera and Theridion subadultum, were the most abundant and regard as useful natural-enimies. 3. The Ecological habits of the above three species will be studied in the future.

苗令 및 硬化處理가 黃色種 담배의 初期生育 및 收量에 미치는 影響

盧載榮,安長憲,裵吉寬,申周植,李炅珉 충북대학교 엽연초연구소 1984 煙草硏究 Vol.11 No.-

This experiment was conducted to investigate the effect of seedling age, hardening time and hard-ening degree on the growth and yield components of flue-cured tobacco. Variety used was NC 2326. The results are summarized as follow; 1.Time of period from setting to topping, that from setting to the end of harvest, and that from topping to the end of harvest were longer in 50-day seedling than in 60-day seedling. And there was little difference of the time of period from sowing to the end of harvest between 50-day seedling and 60-day seedling. 2.C.G.R. was high in 50-day seed]ins than in 60-day seedling until the late maximum growing stage. In the 60-day seedling, growth continued late, and as a result of this, the stem height and number of leaves per a plant at topping time were higher in 60-day seedling. 3.The growth was most desirable in the recommended hardening(4.5ℓ/3.3㎡ ㆍ day ). The growth rate of severe hardening(1.5ℓ/3.3㎡ ㆍ day ) was high during the period from establishing to middle part of maximum growth. Se there was little difference of glowing characters among the plots of different hardening degree. 4.The leaf area of lugs and cutters was larger, and the weight of unit leaf area and percentage of dry matter in the plot of 60-day seedling were lower than those in other plots. 5.The leaf weight per plant, in the plot of recommended hardening was higher than that in the plots of without hardening and severe hardening. 6.There were little effects of tome of hardening on the growth and yield components.

영어와 한국어의 외연과 함의의 의미표시에 관한 연구

이덕만,이영헌,허장융 조선대학교 외국문화연구소 1987 外國文化硏究 Vol.10 No.1

지금까지의 논의를 통하여 불의 대수체계를 자연언어(여기서는 영어와 한국어) 기술에 도입함으로써 보다 체계적인 형식화를 모색해 보았다. 특히 외연과 함의를 두 표현의 정보량에 의하여 정의으로써 종래 전체나 함의에 대한 논란의 해결점을 마련한 셈이다. 그러나 불의의 대수체계에 의한 다음의 몇가지 문제점은 자연언어 기술에 있어서 문제점으로 지적할 수 있다. 첫째 불의 대수체계에 의한 자연언어 기술에 있어서 두 표현의 결합은 그 표현의 부분을 함의하느냐하는 것이다. 예컨대 수식어 모조와 피수식어 권총이 결합하여 모조권총 이란 새로운 표현이 이루어질 때 모조권총은 그 부분표현인 권총을 참의해야 할 것이다. 바꾸어 말하면 모조권총의 외연을 f(g)라 한다면 권총의 외연은 g가 되므로 f(g)가 g보다더 많은 정보를 갖기 때문에 모조권총은 권총을 함의해야 할 것이다. 우리의 언어 직관에 비추어 보더라도 모조권총으로부터 권총을 추론해 낼 수 없다. 따라서 함의 기술에 대한 불의 대수체계 수정이 요구된다.

스티렌 현탁 중합반응에서 폭주반응 해석

박형일,신석주,이헌창,장서일,김태옥 한국산업안전학회 2002 한국안전학회지 Vol.17 No.3

The runaway reaction was analyzed experimently and theoretically at the batch styrene suspension polymerization process. In the experiments, the reaction temperature with time was measured at various experimental conditions. According to the experimental results, the risk of the runaway reaction was increased with increasing the ratio of the monomer(styrene, M) to the dispersion medium(water, W), the concentration of the initiator(BPO), and the monomer mass, respectively. And simulation results showed that the runaway reaction was significantly affected by the reaction rate constant of the propagation and that the phenomena of the runaway reaction occurred at about 70% conversion. Also, we found that the runaway reaction did not occur under the operation condition of below 0.5 for M/W, approximate 3 wt% BPO, and below 75℃ for the cooling temperature.

The Effects of the Humidity and Thickness on YBCO Film Prepared Using the TFA-MOD Method

Seok Hern Jang,Jun Hyung Lim,Kyung Min Yoon,Seung Yi Lee,Kyu Tae Kim,Eui Cheol Park,Jinho Joo,Seung-Boo Jung,Hyoungsub Kim Institute of Electrical and Electronics Engineers 2007 IEEE transactions on applied superconductivity Vol.17 No.2

<P>This study examined the epitaxial growth of YBa<SUB>2</SUB>Cu<SUB>3</SUB>O<SUB>7-x</SUB> (YBCO) films on (00l) LaAlO<SUB>3</SUB> substrates prepared by metal organic deposition (MOD) using a trifluoroacetate (TFA) solution. The effects of humidity (0-20% of P<SUB>H2O</SUB>) and film thickness (0.4-2.1 mum) on the phase formation, texture, and microstructures of the YBCO films were examined by X-ray diffraction, pole-figure, and scanning electron microscopy (SEM). The microstructure and resultant critical properties varied remarkably with humidity. With increasing humidity, the amount of the second phase (BaF<SUB>2</SUB>) decreased, the degree of texture was enhanced, and consequently the critical current (I<SUB>C</SUB>) and temperature (T<SUB>C</SUB> ) were improved. In the case of multi-coated films, the I<SUB>C</SUB> value increased from 35 to 152 A/cm-width with an increasing number of coatings from one to three, while the corresponding critical current density (J<SUB>C</SUB>) was in the range of 0.9-1.5 MA/cm<SUP>2</SUP> . Both the I<SUB>C</SUB> and J<SUB>C</SUB> decreased when an additional coating was applied due to microstructural degradation.</P>

The antinociceptive and anti-inflammatory effect of water-soluble fraction of bee venom on rheumatoid arthritis in rats

Lee, Jang-Hern,Kwon, Young-Bae,Lee, Jae-Dong,Kang, Sung-Keel,Lee, Hye-Jung KOREAN PHARMACOPUNCTURE INSTITUTE 2001 Journal of pharmacopuncture Vol.4 No.1

We recently demonstrated that bee venom (BV) injection into acupoint (i.e. Zusanli) produced more potent anti-inflammatory and antinociciptive effect in Freunds adjuvant induced rheumatoid arthritis (RA) model as compared with that of non-acupoint injection(i.e back). However, the precise components underlying BV-induced antinociceptive and/or anti-inflammatory effects have not been fully understood. Therefore, we further investigated the anti-arthritic effect of BV after extracting the whole BV according to solubility (water soluble: BVA, ethylacetate soluble: BVE). Subcutaneous BVA treatment (0.9 mg/kg/day) into Zusanli acupoint was found to dramatically inhibit paw edema and radiological change (i.e. new bone proliferation and soft tissue swelling) caused by Freunds adjuvant injection. In addition, the increase of serum interleukin-6 by RA induction was normalized by the BVA treatment as similar with that of non-arthritic animals. On the other hand, BVA therapy significantly reduced arthritis induced nociceptive behaviors (i.e., nociceptive score for mechanical hyperalgesia and thermal hyperalgesia). Furthermore, BVA treatment significantly suppressed adjuvant induced Fos expression in the lumbar spinal cord at 3 weeks post-adjuvant injection. However, BVE treatment (0.05 mg/kg/day) has not any anti-inflammatory and anti-nociceptive effect on RA. Based on the present results, we demonstrated that BVA might be a effective fraction in whole BV for long-term treatment of RA-induced pain and inflammation. However, it is clear necessary that further fraction study about BVA was required for elucidating an effective component of BVA.