Parthenogenetic Activity of Porcine Sperm Factor to In Vìtro Matured tured Porcine Oocyte

Park, Chun_Gyu,Jin-Ki Parκ,Sung-Woo Kim,Ju-Young Lee,Joo-hee Han,Seung-Eun Lee,Kyung-Nye Baek,Won-Chung Chang 한국동물생명공학회(구 한국동물번식학회) 2004 Reproductive & Developmental Biology(Supplement) Vol.28 No.2s

부신피질 자극호르몬 단독결핍 1례

박경식,이승현,최석영,박태규,이동화,이찬우,정성복,이인규 啓明大學校 醫科大學 1997 계명의대학술지 Vol.16 No.3

부신피질 자극호르몬 단독결핍은 국내에서 7례만이 보고된 희귀 질환이며 병인 및 경과 등 아직 불분명한 측면이 많다. 이는 질환지체의 희귀성도 있지만 치료후 자연경과에 대한 장기적인 추적검사가 이루어진 경우가 드물기 때문이기도 하다. 저자들은 비특이적인 전신증상을 주소로 내원한 폐경기후의 56세 여자 환자에서 자가면역질환의 증거없이 고프로릭틴혈증을 보인 부신피질 자극호르몬 단독결핍 1례를 경험하고 1년간의 부신피질호르몬 대치요법후 추적검사를 실시하였기에 문헌 고찰과 함께 보고하는 바이다. Isolated ACTH deficiency is a rare disorder which shows secondary adrenal insufficiency with normal states of other pituitary hormones. A 56-year-old postmenopausal woman complaining general weakness and intermittent mental confusion presented negligible serum cortisol and ACTH level with hyperprolactinemia and mild hyponatremia. Rapid ACTH stimulation test did not show significant increase of serum cortisol level. Combined pituitary stimulation test showed negligible response of cortisol and ACTH, and slightly decreased response of prolactin and gonadotropin. But the responses of TSH and GH were normal. There was no evidence of organic pituitary of hypothalamic lesion in brain MRI and antithyroid autoantibody was not detected in serum. After receiving 12 months of glucocorticoid replacement therapy, she skipped the medicine for 3 weeks and we performed follow-up endocrinologic tests. Serum ACTH and cortisol level was also negligible and prolonged ACTH simulation test showed normal response of serum cortisol. CRF stimulation test showed no response of serum ACTH. Basal prolactin level was decreased to near normal and combined pituitary stimulation test showed normal response of prolactin with slightly blunted response of TSH and GH. We concluded that the case was nonautoimmune origined isolated ACTH deficiency which was accompanied by hyperprolactinemia and resultant deficiency of gonadotropin, so we report this case with review of literatures.

관동맥질환에서 저밀도 지단백 입자 크기의 분포

임효영,김인숙,승기배,강동헌,전두수,장기육,박준철,이수영,홍순조,최규보 대한순환기학회 1998 Korean Circulation Journal Vol.28 No.8

조건단일화를 이용한 한국어 구문 분석

이용석,황이규,양승원 全北大學校 1995 論文集 Vol.39 No.-

Korean, which is classified as a non-structural language, has a simple grammar structure but it has a lot of structural ambiguities in its grammar itself. As the role of extra-grammatical information is much more important than that of grammar rules in the syntactic analysis of Korean, an analysis mechanism is required to check dynamically the grammatical relationship between each of constituents. In this paper, we define the conditional unification the method that selectively performs unifications which are satisfied with some conditions in the unification-based analysis. In order to support this kind of analysis method, we extend the PATRⅡ by adding the various condition check devices. We adopt the tree unification to solve the problem of the DAG unification when we implement the conditional unification. In order to show that our presented method is suitable for Korean analysis, we explain that it can solve difficult problems easily, such as ellipsis and inversion. In addition, we show that it is possible to process the coordinate clause that the predicate of the first clause is omitted in the presented method.

정상 관동맥을 가진 심장 점액종 환자에서 발생한 급성 심근 경색증 1예

이정민,이현승,전은정,윤호중,정욱성,오용석,김철민,김재형,최규보,홍순조,이교영,심상인 대한순환기학회 1998 Korean Circulation Journal Vol.28 No.9

포사맥스 정(알렌드론산나트륨 70mg)에 대한 대웅 알렌드로네이트 정 70mg의 생물학적 동등성

이예리,정선경,양승권,최기호,신용철,전형규,강승우,이희주 한국약제학회 2006 Journal of Pharmaceutical Investigation Vol.36 No.2

목재펠릿과 주택용 목재펠릿보일러의 품질기준에 관한 국내외 비교연구

이승록, 한규성 충북대학교 농업과학기술연구소 2022 農業科學硏究 Vol.38 No.2

Wood pellets, a representative bioenergy source, are actively used world widely. Wood pellets made in the domestic volume were around 0.65 million tons in 2021 and the scale was generally grow- ing up, which implies that South Korea’s wood pellet processing technology has reached a significant level. To guarantee a reasonable supply of wood pellet fuels as carbon-neutral sources, quality standards for related products and combustion equipment standards must be clearly established. In line with this, the authors compared major changes in domestic wood pellet quality standards with ISO standards. South Korea's wood pellet quality standards policy has undergone various changes over a period of a decade and has been improved to an equivalent level to the internationally. In addition, it was confirmed that the ‘Clean Air Conversion Act’ to be discharged for biomass-using facilities such as wood pellets have been gradually strengthened as the times change. Also comparing domestic and foreign quality standards based on small-scale combustion equipment which is using wood pellets as fuel, the authors found that domestic standards need to make improvements to meet the EU's combustor emission gas quality stan- dard level.

조선시대 花鳥木版畵 연구

이승일,장규희 홍익대학교 산업디자인 연구소 2004 미술디자인 논문집 Vol.- No.9

The woodcut of flowers and birds is a field that has not been almost covered in studies of old prints. This seems related to the lack of modernistic studies on the paintings of flowers and birds (hwajohwa). During the Chosun Period, this painting genre was popular among high officials and commoners as well as in painters' circles. While having received influence from China and its neighboring countries, it is used to create unique painting styles with the change of the times. This suggests that the painting genre has played an important role in the Korean painting history-and so should not be easily ignored. Since there was much influence from Japan during the Japanese colonial period, however, those flowers-and-birds paintings were recognized to belong to a Japanese painting genre even after the restoration of Korea's independence in 1945. That would be why little attention is being paid to the painting genre today. As a result, such recognition has led to the lack of studies regarding the flowers-and-birds paintings, and in turn it has influenced a lack of understanding concerning the importance of those woodcuts, in addition to the reality that there are few remaining woodcuts of flowers and birds. Accordingly, this study is focused on the flowers-and-birds woodcut that has not been almost dealt with in the previous studies on old prints. Its purposes are to promote the understanding about the woodcut confirm its position as an old printing area and provide a new basis for the study of flowers-and-birds paintings. The woodcut of flowers and birds is a form of woodprint which is same as a pure colored style of flowers-and-birds paintings in its expression and includes all pieces of work created using wood-engraving techniques. In this study, the woodcut of flowers and birds is considered as including both of the simple flowers-and-birds paintings printed from woodblock and the ones colored in specific styles on the woodblock prints. This study focuses on the Chosun Period compared to other periods in the number of available pieces of flowers-and-birds woodcut. To examine their characteristics, it categorizes those woodblock prints into flowers-and-birds woodcut for space decoration, book, flowers-and-birds woodcut, writing paper with flowers and birds, envelopes with flowers and birds, and character paintings with flowers and birds according to the purposes for which they were used and into beast woodcut and floral woodcut according to what is the subject matter used with. Mostly, the flowers-and-birds woodcut for space decoration-in other words, produced for the purpose of decorating everyday living spaces-engraves the outlines forming its frame and the patterns of trees, flowers, birds, waves, and rocks infine lines emphasizing their characteristics, texture, and shapes and has a style colored with a brush on the engraving. The book flowers-and-birds woodcut is divided into two main types: One reveals its subject through its used subject matters, and the other focuses on documentary and decorative characteristics. When categorized as wiring paper or an envelope, most pieces of woodcut contain flowers and birds as their main subject matters. In particular, they were created as part of the way to express one's own unique personality, so there were many dilettantes who enjoyed working on them. Since most bear a engraver's signature, it is not difficult to infer when and where they were created and to find out information about their users. Shown in character paintings, flowers and birds are printed from their woodblock patterns engraved in black-colored letters. Their bold contrast of black and white makes a strong visual impression, and the rare overlaps between subject matters gives a weak sense of spatiality, but a strong sense of planarity. In the categorization based on the used subject matters, most of the floral woodcut works discovered have been made for a decorative purpose rather than with an incantatory intention, while a significant number of beast woodcut works with flowers and grass as their main subject matters seem to have come from an incantatory intention, even though they bear a decorative purpose in part. In general, the woodcut of flowers and birds is not a simple woodblock engraving print with a single color, but a piece of work colored and finished with a brush on the print. This way of creation would probably be attempted to avoid having to draw a rough sketch whenever it was produced in large quantities. This serves as a main factor that makes the woodcut distinct from the pure-colored paintings of flowers and birds. The patterns printed from the engraving give the iconographic contour accuracy and definition so that undesired expressions can be minimized. And the woodblock-printed book is planned precisely, but not created temporarily or impromptu, so the overall iconographic composition can maintain balance and stability. Therefore, the finished work could be equipped with refinement and delicacy, although there might be limits in liberal expressions. These are some of critical features shown in the woodcut of flowers and birds, which are why the woodcut works are balanced and stable in their iconographic composition. So far, this study has focused on the flowers-and-birds woodcut, which has been seldom discussed in the existing studies, reviewing its meanings and historical background as well as types and characteristics. Most of difficulties in conducting the study came from the lack of studies on the woodcut and the shortage of its remaining works. If this study leaves something to be desired, the reason is that those difficulties acted as obstacles to a comprehensive and detailed discussion.

글루코오스의 분해반응에 미치는 금속이온의 영향

이민규,이송우,허목,송승구 濟州大學校 工科大學 産業技術硏究所 1991 産業技術硏究報告 Vol.2 No.-

The objective of this research was to study the chemical kinetics of the decompo-sition of glucose in the presence of acid catalyst and metal ion. In this experiment. the range of variables investigated was covered temperature from 160℃ to 180℃ and concentration of 4% to 11% (W/V) sulfuric acid and metal sulfate concentrations, 1.0×10^(-3) to 2.5×10^(-2) gmol/l. It is shown that glucose disappearance follows a first-order reaction mechanism and the glucose decomposition reaction is dependent on both the reaction temperature and the catalyst concentration. And the presence of chromic ion accelerates the decompo-sition reaction of glucose, but presence of ferric and nickel ion rarely influence the reaction.

TiAIN 코팅공구를 사용한 Ti-6Al-4V 티타늄합급의 절삭특성에 관한 연구

이승철,박종남,조규재 한국공작기계학회 2004 한국공작기계학회 추계학술대회논문집 Vol.2004 No.-

The Titanium has many superior characteristics Which are specific strength, heat resistance, corrosion resistance, organism compatibility, non-magnetic and etc. and their quantity are abundant.this study performed turning operation of Ti-6AI-4V alloy using the TiAIN Coate Tool which treated PVD (Physical Vapor Deposition). Experimental works are also executed to measure cutting force, chip figuration and surface roughness for different cutting conditions. As a result of study. Tool wear was serious at over 100m/min of cutting speed and cutting condition was excellent at 1.0㎜ of cutting depth.