Effect of Body Condition Score (BCS) on In Vivo Embryo Production and Pregnancy Rate Following Superovulation in Hanwoo

Gyu-Tae Yeom,Hae-Geum Park1,Nam-Tae Kim,Sung-Woo Kim,Hyun Kim,Yoon-Jung Do,Young-Sin Kim,Soo-Bong Park,Jae-Hwan Kim,Sang-Rae Cho,Jae-Hyeon Cho,Yeoung-Gyu Ko 韓國受精卵移植學會 2013 한국동물생명공학회지 Vol.28 No.1

Body condition score (BCS) is a useful management tool for distinguishing differences in nutritional needs of cows in the herd. Although it is not always possible to quantify the nutrient content of the feed supplied to the donor cow, the nutritional status can be determined by the BCS. The objective of this study was to evaluate in vivo embryo production, return to estrous of donor and pregnancy rate of recipients following BCS in Hanwoo superovulation. Sixty nine Hanwoo donor cows were flushed on day 7 of estrus cycle with same FSH and artificial insemination by the same technicians. Embryos were recovered on 7 days after the third insemination by flushing the uterus with Embryo Collection Medium. The results obtained were as follows: No differences were observed in the efficiency of superovulation rates regardless of BCS (≤2.0, 2.5 to 3.0, and ≥3.5). The mean number of total embryos was each 5.20±0.86, 11.56±1.04, and 6.23±1.07. The mean number of transferable embryo from ≤2.0, 2.5 to 3.0, and ≥3.5 of BCS was 2.60±0.87, 7.94±0.89, and 4.75±1.32, respectively (p<0.05). Return to estrous regardless of donor BCS was no difference. The pregnancy rates of recipient were BCS ≤2.0 11.76%, 2.5 to 3.0 40.79%, and ≥3.5 11.11%, following transfer of fresh embryos produced in vivo, respectively. These results indicate that if the Hanwoo with BCS 2.5 to 3.3 are used for donor and recipient, the embryo production and the conception rate will be greater.

지리산 등산로변의 수목조사 : 동부지역을 중심으로

추갑철,김봉규,박삼봉 진주산업대학교 산업과학기술연구소 2005 산업과학기술연구소보 Vol.- No.12

지리산 동부지역 등산로 8구간(1;거림매표소-세석대피소, 2;중산리매표소-칼바위-로타리대피소, 3;세석대피소-장터목대피소, 4;장터목대피소-천왕봉, 5;로타리대피소-천왕봉, 6;자연학습원-로타리산장, 7;중산리-자연학습원, 8;장터목대피소-백무동매표소)의 목본식물을 조사한 결과 37과 66속 99종 13변종 2품종으로 총 114종류가 조사되었다. 이들 중 상록침엽수는 주목, 개비자나무, 잣나무, 소나무, 구상나무, 가문비나무, 등 6종이고, 낙엽침엽수는 낙엽송 1종만 나타났다. 한국 특산종으로는 개비자나무, 잣나무, 구상나무, 매자나무, 매화말발도리, 산앵도나무, 노각나무, 딱총나무 등이 조사되었다. 전 구간에 걸쳐 나타나는 수종으로는 신갈나무, 함박꽃나무, 철쭉 등이 조사되었고, 가장 수종이 많은 구간은 제 1조사구로 32과 49속 72종류이고, 종의 수가 가장적은 구간은 제 4조사구로 11과 20속 23종류가 조사되었다. 본 연구에서 제시된 결과는 국립공원 탐방로 관리방안에 있어 유용한 기초정보를 제공 할 것으로 기대된다. The woody plants species were investigated as 114 taxa; 37 families, 66 genus, 99 species, 13 varieties, 2 forms in the whole 8 trails surveyed areas of eastern parts of Chirisan(1; Georim valley~Sesok shelter, 2; Jungsanri valley~Rotari shelter, 3; Sesok shelter~Jangtomok shelter, 4; Jangtomok shelter~Chonwangbong, 5; Chonwangbong~Rotari shelte, 6; Jayeonhagsubwon~Rotari shelter, 7; Jungsanri Valley~ayeonhagsubwon, 8; Jangtomok shelter~Baengmudong). The narrow-leaved evergreens were 6 species. There are Taxus cuspidata, Cephalotaxus koreana, Pinus koraiensis, Pinus densiflora, Abies koreana, Picea jezoensis. The narrow-leaved deciduous was Larix leptolepis. The endemic woody plants to korea of Chirisan were 8 species. There are Cephalotaxus koreana, Pinus koraiensis, Abies koreana, Berberis koreana, Deutzia coreana, Vaccinium koreanum, Stewartia koreana, Samvucus williamsii var. coreana. In all area surveyed woody plants were Quercus mongolica, Magnolia sieboldii, Rhododendron schlippenbachii. Findings of the study expect to be used as fundamentals in trail management strategy making for Korean national parks.

중국전자산업에서의 환경, 전략 및 기업성과간의 관계

박봉규,김영대 대한경영학회 2003 大韓經營學會誌 Vol.16 No.6

Based on a survey of the top managers in the China electronics industry, this study examined the strategy-environment-performance paradigm in a regulated economy. This study investigated in an exploratory way the relationship between perceived environments and strategy types, and its performance implications. The results of canonical correlation analysis showed that even in a regulated economy, firms exhibited distinctive strategies, and these strategies were significantly related to perceived environmental uncertainty. Specifically, managers' perceptions of increased environmental uncertainty were found to be negatively related to proactive strategies and positively related to defensive strategies. Although the results showed partly significant, we observed that strategies were different between high and low performance firms. Implications and the limitations of this study are discussed.

호텔종사원의 자기유능감이 자발적 행동에 미치는 영향

박봉규 동명정보대학교 2002 사이버 비지니스 Vol.1 No.-

Though the concepts of self-efficacy and discretionary behavior of hotel employees are very important in the theoretical and practical perspective, the extant study has not studied yet. Based upon social exchange theory and norm of reciprocity, we predict that self-efficacy of hotel workers will influence discretionary behavior. Also we expect that perceived support from the hotel and affective commitment have moderating effects between self-efficacy and discretionary behavior. This paper thus explores empirically the effect of self-efficacy of hotel workers on discretionary behavior, and the moderating effects of perceived support from the hotel and affective commitment. To examine hypotheses, we collected 421 questionnaires from customer encountered employees of five hotels in Busan. Hierarchical regression analysis was employed as an analytical tool. The results show that self-efficacy of hotel workers significantly influences discretionary behavior. In addition, affective commitment has moderating effects between self-efficacy and discretionary behavior. But perceived support from the hotel has no significant moderating effects between self-efficacy and discretionary behavior. We discuss the implications of these results for theory and practice. Further research suggestions are also made and limitations of this study are mentioned.

AC PDP 네 투명 유전층의 절연내력과 투과율에 관한 연구

박정후,이성현,손재봉,김규섭,조정수 釜山大學校生産技術硏究所 1998 生産技術硏究所論文集 Vol.54 No.-

AC PDP(plasma display panel)는 40인치 이상의 대화면 디스플레이 장치로서, AC PDP내 투명 유전층은 방전플라즈마중의 양이온 충격에 의해서 금속전극이 스파터되는 것을 보호하고, 유전층 표면에 벽전하를 형성하여 대화면 구동에 필요한 메모리기능을 부가하므로 방전 cell구조에서 필수적인 부분이다. 이러한 유전층은 우수한 절연내력을 가져야할 뿐 아니라 가시광을 투과시키기 위한 높은 투과율이 요구된다. 따라서 본 연구에서는 여러 조건들 하에서 유전층의 절연내력과 투과율에 관하여 논하였다. 그 결과 15μm 두께를 가지고 570℃에서 소성을 행한 유전층의 경우 최소 29V/μm의 절연 내력을 가졌고, 80%정도의 투과율을 나타내었다. 그러므로 AC PDP에서 적정유전층의 두께는 최고인 가전압에 대해서 약 80V 정도의 마진을 가지는 15μm정도가 적당하다고 생각된다. AC PDP(plasma display panel) is large display panel over 40 inch. The transparent dielectric layers in AC PDP are essential to the discharge cell structure, because they protect metal electrodes from sputtering by positive ion bombarding in discharge plasma and form a sheath of wall charges which are essential to memory function necessary to drive large panel. This layer should have high dielectric strength, and also be transparent because visiable light must pass through this layer. Therefore in this paper, we discussed the dielectric strength and transmittance coefficient of the dielectric layer under various conditions. As a result, on the 15μm thickness, the minimum dielectric strength was 29V/μm and the transmittance coefficient was about 80% after 570℃ firing process. It is considered that the resonable dielectric thickness in AC PDP is 15μm because it has about 80V margin on the maximum applied voltage.

중재제도유용성과 부산지역기업들의 인식도에 관한 실증적 연구

박봉규,신군재 韓國仲裁學會 2005 중재연구 Vol.15 No.3

In the era of globalization firms must operate all useable resources into marketing activities to survive on the unlimited competition. However, firms face many kinds of disputes with counterparts because of aggressive marketing activities. There are two ways of solving these disputes : litigation and arbitration. As compared to litigation, arbitration is more popular because of such merits as the enforcement of arbitral award in foreign countries, the single trial system, the settlement by specialists, and the confidential proceedings. This paper examines trade firms' perception on the arbitration system and the effects of the advantages of arbitration and quality of arbitrators on the outcome of arbitration. The results show that the advantages of arbitration and quality of arbitrators influenced positively on the outcome of arbitration, but influenced nagatively on the colsed-door of arbitration procedures and a fair procedure of arbitrator. Though this paper has several limitations, this paper may contribute to figure out the relationship between arbitration merits and quality of arbitrator and outcomes as a first empirical paper and to suggest future research method and direction.

우리나라 은행산업에서의 환경변화에 따른 전략변화의 경로 및 결정요인과 성과에 관한 종단적 연구

박봉규 대한경영학회 2003 大韓經營學會誌 Vol.16 No.7

The purpose of this study is to examine the pathways and determinants of strategic change on environmental change and performance in the Korea bank industry. Though the extant study has been examined the relationship between financial index and performance, the scope was limited. To fill this cap this study tries to examine the relationship strategic change and its determinants: Past performance, organizational slack, and chief executive bankers succession. Based upon the theoretical and empirical extant study four hypotheses have been suggested. Hypotheses testing was conducted for 15 Korean banks during 1987-97 periods. The results show that the two stable periods came out: Period Ⅰ(1987-91) and Period Ⅱ (1992-97). Each strategic group has unique strategic characteristics and performance differences. The statistically significant determinants of strategic change were past performance and chief executive bankers. The performance difference between strategically changed banks and no-change banks were not statistically significant. The limitation and suggestions of this study are presented.

한국산 감잎의 Polyphenol 화합물의 생리활성물질의 화학구조 및 효소저해효과

안봉전,최희진,손준호,우희섭,한호석,박정혜,손규목,최청 한국식생활문화학회 2003 韓國食生活文化學會誌 Vol.18 No.5

The lyophilization of the solution extracted from 60 percent of acetone applied to persimmon leaves, the compounding process in accordance with the solution's concentration, and the gel filteration through Sephadex G-50 of biologically activated substances obstructing enzyme activity, such as tyrosinase, xanthine oxidase, and angiotesin converting enzyme (ACE) led to the assumption that polyphenol was the compound serving as biologically activated substances obstructing enzyme activity. Xanthine oxidase involved in pruine metabolism oxidizes hypoxanthine to xanthine and xanthine to uric acid. In the continuous study for natural compound, nine flavan-3-ois have been isolated from the persimmon leaves. The structures of (+)-catechin, (+)-gallocatechin, procyanidin B-1, pyrocyanidin C-1, prodelphinidin B-3, gallocatechin-(4α→8)-catechin, procyanidin B-7-3-O-gallate, procyanidin C-1-3'-3''-3'''-O-trigallate and (-)-epigallocatechin-(4β→8)-epigallocatechin-(4β→8)-catechin were established by NMR and their inhibitory effect on xanthine oxidase activity was investigated. Procyanidin C-1-3'-3''-3'''-O-trigallate showed 94%, 90.69%, 80.90% inhibition at 100(μ)M and inhibited on the angiotension converting enzyme respectively. Procyanidin B-7-3-O-gallate and procyanidin 1-3'-3''-3'''-O-trigallate showed 66%, 63% inhibition at 100(μ)M and inhibited on the xanthine oxidase competitively. Procyanidin C-1-3'-3''-3'''-O-trigallate showed 70% inhibition at 100(μ)M inhibited on the thyrosinase competitively.

3상 유도전동기 구동을 위한 전압원 인버터의 새로운 과변조 PWM 기법

신흥교,박종규,김봉식,신휘범 慶尙大學校 工科大學 自動化및컴퓨터應用技術硏究所 1997 自動化 및 컴퓨터應用技術 Vol.4 No.1

The novel PWM(pulsewidth modulation) strategy of three-phase voltage source inverter in the overmodulation range is proposed. Generally, the space vector PWM strategy in the overmodulation range is widely utilized due to its simple and effective digital implementation and increased voltage transfer ratio. A unique algorithm manages the transition form the onset of overmodulation to six-step operation. This proposed technique maximizes the utilization of the dc-link voltage and maintain the voltage linearity between the reference and output voltages, and it decreases the necessary memory quantity for the look-up table of the angle.

人體에서 分離한 葡萄糖 非醱酵菌의 抗菌劑 耐性에 關한 硏究

李淵台,崔承求,朴哲熙,曺圭鳳 단국대학교 대학원 1991 學術論叢 Vol.15 No.-

This experiment was conducted to classify for the 82 strains of glucose nonfermentative bacteria obtained from K hospital, in 1988, on the biological differentials and to test the resistance reaction on the drugs for those strains. The results were as follows : 1. Eighty two strains were classified into 65 strains of 79.3% of Ps. aeruginosa, 10 strains of 12.2% of Ps. cepacia, and 7 strains of 8.5% of Ac. calcoaceticus as results of 0 F sugar test, oxidase test, and DNase test. 2. It showed that Ps. aeruginosa was coincided with AP, CM, GM, KM, CF, and TC from the disk and MIC methods in the test of resistance reaction to antimicrobial agent, and especially, that AK and TOB KM and GM were observed high resistance reactive from MIC method. Resistnace to antibiotics for Ps. cepacia showed the identical reaction to AP, CB, CM, AK, SPT, CF, TC, TOB, KM and GM were observed high resistance reative from MIC method. Ac. calcoaceticus was identified the same resistance reaction to antibiotics to CB, KM, GM, AK, CF, and TOB, AP, SPT and TC showed high resistance reaction from the disk method. 3. CF and AP were observed the highest resistance reactions among 10 kinds of drugs used in this experiment and following was CM, KM and TC in order. 4. Ps. aeruginosa, Ps. cepacia, and Ac. calcoaeticus showed all multiple resistance reactions in the test of resistance to drugs, and Ps. aeruginosa was identified high resistance reaction to 6 drugs in 24.6%, Ps. cepacia was 9 drugs in 60%, and Ac. calcoaceticus showed resistance reaction to various kinds of drugs. 5. It showed important question in result of these studies that resistance percentage of NFB decreased by optimal antimicrobial selection and effective treatment established from serious antimicrobial treatment.