• Title/Summary/Keyword: receptivity

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Effect of Sexual Partners on the Oestrous Behaviour Response in Zebu Cattle (80S Indicus) Following Synchronisation with a Progestagen (Synchro-Mate B)

  • Cortes, R.;Orihuelal, J.A.;Galina, C.S.
    • Asian-Australasian Journal of Animal Sciences
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    • v.12 no.4
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    • pp.515-519
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    • 1999
  • With the purpose of determining the influence of sexual partners on the oestrous behaviour and to evaluate the accuracy of predicting the time from implant withdrawal to sexual receptivity following a treatment with Synchromate B (SMB), 15 adult Brahman cows were used in each of three phases. During phase I and n, random pairs of animals were induced to display oestrus one pair after the other at daily intervals, while in phase III, cows were induced alternately, every other day, one cow on the 1st day, two on the 3rd, one on the 5th, two on the 7th until all cows were treated. Sixty six percent of the cows in phases I and II, and 80% in phase III came into oestrous after treatment. The interval between implant withdrawal and, expected and observed oestrous was statistically different in all phases. Clustering of oestrous was evident. Cows displayed sexual receptivity within a. range of -24 to +96; -24 to +72 and -216 to +192 hours after implant withdrawal for the three phases, respectively, with a tendency for cows treated first (within treatments), to delay their oestrus signs and vice versa. In phase III, four cows showed oestrous behaviour with the implant in place. These in spite of not observing pre-ovulatory follicles. Correlation values of 0.99, 0.93 and 0.90 (P<0.05) were found respectively among treatments, between the number of cows coming into oestrus and the number of mounts observed. These findings suggest that there are social and behavioural factors in a herd that may override exogenous synchronisation treatments.

A Study on the receptivity to Social Computing in International Trade (국제무역의 소셜 컴퓨팅 수용 가능성에 관한 연구)

  • Lim, Jae-Wook
    • International Commerce and Information Review
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    • v.13 no.3
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    • pp.55-74
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    • 2011
  • Web Service applications based on the social relation such as Social Network Service(SNS), Social Medias are making strong blast. Social Computing which is widely spreading to worldwide is affecting to our life including policies, economies, societies and culture. Based on Web 2.0, various services like as Social Collaboration, Social Publishing, Social Feedback are supplied, more evolved social computing services, Social Connection, Augmented Reality, will be served for the next days from now. These network based services, Social Network Service or Social Media frequently used terms, are not defined exactly and their characteristics are not gotten to the bottom yet. Theoretical and systematic studies on these themes are not made also. Applications to business area, especially the receptivity to social computing in international trade is barely made to these days. This study focuses on the concepts, characteristics and sorts of social computing and purposes to consider its possibilities of application of social computing to international trade. Considering the advantage of Social network service, it can be used in international trade, a kind of B2B transaction, while existing social network is mainly applied to B2e transaction.

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Behavioral Characteristics of Bos indicus Cattle after a Superovulatory Treatment Compared to Cows Synchronized for Estrus

  • Jimenez, A.;Bautista, F.;Galina, C.S.;Romero, J.J.;Rubio, I.
    • Asian-Australasian Journal of Animal Sciences
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    • v.24 no.10
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    • pp.1365-1371
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    • 2011
  • The intensity and duration of sexual behavior in Bos indicus was assessed through the continuous observation of sexual receptivity. Two groups of cows were formed: only synchronized (n = 50) and other group further superovulated (n = 20). An intravaginal implant that released progesterone over 9 d was used. After removing the implant, 25 mg of $PGF_{2{\alpha}}$ was administered. In the superovulated group, the administration of 280 mg (Follicle stimulant hormone) FSH-P1 per cow with a decreasing dosage over 4 d was utilized. In both groups, behavioral observations began at the moment of implant removal. Sexual behavior was analyzed using a Kruskal-Wallis test to compare the mean of hours in estrus, effective mountings and number of mounts/hour during estrus. A nonparametric survival analysis was performed using the time in two ways: i) when an event happened it was placed in a 24 h timeframe and, ii) the time of observation in continuous form (96 h) assessing the difference between curves by the log rank test Chi-square. The only significant difference was the number of mounts/h during receptivity (p<0.05). In the superovulated group three periods of sexual activity during the day were identified, with these events being of greater frequency and duration than the synchronized group (p = 0.02); besides, the superovulated group began estrus before the synchronized group (p = 0.0035) when using the total period. In a simulation study, when the number of observations went from two (06:00-18:00) to three periods (06:00, 12:00 and 18:00) cows detected accurately (<6 h after the onset) increased more than 20%. The results show that superovulated cows presented greater intensity and duration of sexual activity in contrast with only synchronized animals.

Effects of Base Papers Containing Nonwood Pulp on the Properties and Printabilities of Coated Papers(II) -Rice Straw Bleached Kraft Pulp- (비목재펄프를 이용한 도공원지의 특성이 도공지의 물성 및 인쇄적성에 미치는 영향(II) -볏짚 표백 크라프트펄프-)

  • 임현아;강진하;이용규
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.32 no.4
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    • pp.49-57
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    • 2000
  • This study was carried out to investigate the effect of the type of base papers containing rice straw-BKP on the properties and printabilities of coated papers. Also, it was intended to evaluate the effect of coated paper prepared with anionic and amphoteric latex based coating color. The results obtained from this study were as follows. The fiber length of rice straw-BKP was observed much shorter than those of the wood pulps(Sw-BKP, Hw-BKP). This has effect on physical properties. Therefore, the results of measured physical properties were much lower than those of wood pulps. Also, physical properties tended to increase slightly with the increase of the mixing ratio of Sw-BKP. Opacity of the base paper containing rice straw-BKP, was higher than that of the wood pulps. As the mixing ratio of Sw-BKP increases the opacity tended to decrease. On the other hand, smoothness and roughness to rice straw-BKP were similar with Sw-BKP and its air permeability was lower than those of wood pulps. The optical properties of coated papers containing rice straw-BKP tended to be similar to those of other base papers. The ink receptivity of coated papers containg rice straw-BKP was higher than those of wood pulps and printing gloss was similar to wood pulps. The mixing ratio of Sw-BKP, the ink receptivity and printing gloss of rice straw-BKP were showed no difference irrespective the mixing ratio of Sw-BKP. Meannwhile, amphoteric latex improved the optical properties and printability of coated papers.

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Hormonal regulation of uterine chemokines and immune cells

  • Park, Dong-Wook;Yang, Kwang-Moon
    • Clinical and Experimental Reproductive Medicine
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    • v.38 no.4
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    • pp.179-185
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    • 2011
  • The ultimate function of the endometrium is to allow the implantation of a blastocyst and to support pregnancy. Cycles of tissue remodeling ensure that the endometrium is in a receptive state during the putative 'implantation window', the few days of each menstrual cycle when an appropriately developed blastocyst may be available to implant in the uterus. A successful pregnancy requires strict temporal regulation of maternal immune function to accommodate a semi-allogeneic embryo. To preparing immunological tolerance at the onset of implantation, tight temporal regulations are required between the immune and endocrine networks. This review will discuss about the action of steroid hormones on the human endometrium and particularly their role in regulating the inflammatory processes associated with endometrial receptivity.

An Evaluation on the Activity of Public Involvement in Ko-Yang Light Rail Project (고양시 경량철도사업의 국민참여(PI) 활동의 평가)

  • Kim, Yeon-Kyu;Kim, Hyun
    • Proceedings of the KSR Conference
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    • 2007.11a
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    • pp.1787-1795
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    • 2007
  • The objectives of this paper are to introduce the PI(Public Involvement) in railway project and case study about public participation in decision making process for Ko-Yang light rail line development, besides to emphasize the importance of information considering the difference of resident location, regional character and so on are investigated before and after public participation. As the results, it was clarified about PI activities styles that consensus is not achieved in Ko-Yang public participation, the psychological factor such as the knowledge and satisfaction, receptivity about light rail project strongly is affected to making decision.

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Qualitative Research on the Experiences of Children in Interethnic Immigrant Families (결혼이민자 가정 유아의 유아교육기관 생활 경험에 대한 질적 연구)

  • Park, Mi Kyung;Ohm, Jung Ae
    • Korean Journal of Child Studies
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    • v.28 no.2
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    • pp.115-136
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    • 2007
  • In South Korea, some interethnic families result from prearranged marriages where 1 spouse is an immigrant. In this study, traits of children in families of interethnic immigrant marriages were studied by individual interviews of ten kindergarten teachers responsible for them and 8 observations of their preschool classes. Subjects were 21(13 male, 8 female) 3- to 5-year-old children. Results showed the diverse traits of these children : they adapted to the environment by changing and getting along, but some of them exhibited problematic behavior such as delayed language development, confused identity, and aggression. The attitude of their peers included passive reaction, discord and receptivity regarding their difference. The attitude of the teachers was a sense of responsibility and worry.

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Evaluation of the Signal Word Cognition using Quantification Methods (수량화 분석을 이용한 신호단어의 인식도 평가)

  • 고병인;김동하;임현교
    • Journal of the Korean Society of Safety
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    • v.15 no.4
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    • pp.134-138
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    • 2000
  • Signal words such as DANGER, WARNING, CAUTION, etc. have been used in order to transmit a potential hazard easily and quickly. But they were applied to a number of the sites without consistency. Thus, this study took Quantification Method and Cluster Analysis in order to judge the signal words corresponding to the urgency of situations, and to analyze whether signal words are used properly or not. According to the result of Quantification Method II signal words were most affected by Understanding, Severity and Likelihood in both student group and industrial worker group. And in Quantification Method III CAUTION corresponded to Immediacy and Understanding whereas NOTICE did to Receptivity, WARNING, DEADLY and DANCER did to Likelihood, Dangerousness and Severity. Finally, Cluster Analysis showed that CAUTION and NOTICE were recognized as similar words.

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A Review of Mechanisms of Implantation

  • Kim, Su-Mi;Kim, Jong-Soo
    • Development and Reproduction
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    • v.21 no.4
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    • pp.351-359
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    • 2017
  • Implantation is a highly organized process that involves an interaction between a receptive uterus and a competent blastocyst. In humans, natural fecundity suggests that the chance of conception per cycle is relatively low (~30%) and two-third of lost pregnancies occur because of implantation failure. Defective implantation leads to adverse pregnancy outcomes including infertility, spontaneous miscarriage, intrauterine fetal growth restriction and preeclampsia. With use of advanced scientific technologies, gene expression analysis and genetically-engineered animal models have revealed critical cellular networks and molecular pathways. But, because of ethical restrictions and the lack of a mechanistic experiment, comprehensive steps in human implantation have still not been completely understood. This review primarily focuses on the recent advances in mechanisms of implantation. Because infertility is an emerging issue these days, gaining an understanding the molecular and hormonal signaling pathway will improve the outcome of natural pregnancy and assisted reproductive technology.