중합방법의 차이가 PU/organoclay 나노복합체의 미세 구조 및 열적/기계적 특성에 미치는 영향

신나리,권병철,박기호,이한섭,Shin, Na-Ri,Kwon, Byung-Chol,Park, Ki-Ho,Lee, Han-Sup 한국섬유공학회 2007 한국섬유공학회지 Vol.44 No.1

Two different polymerization methods were used to synthesize the PU/organoclay nanocomposite by either 'one step addition' or 'two step addition' method. In two step addition method, the modified clay was reacted with isocyanate-terminated prepolymer to anchor the polymer chains to the silicate layers before the chain extension reaction occurred. On the other hand, the modified clay and chain extender were added simultaneously in the one step addition method. The effect of polymerization method on the exfoliated/intercalated structure of silicate layers as well as on the microphase separated structure of PU matrix has been studied with FTIR, SAXS and TEM methods. The PU/organoclay nanocomposite prepared with one step addition reaction showed better exfoliated structure which is effectively retarding the micro-phase separation process of PU. However, compared with two step addition one, one step addition method was more effective to enhance the initial modulus and tensile strength of the nanocomposites. The role of modified clay for the segmental orientation process was also studied by infrared dichroism method. The orientation process was hindered by the silicate layers and its effect was more pronounced in the nanocomposite by one step addition method.

돼지 폐렴병소로부터 분리한 Pasteurella multocida에 관한 연구 : 항균제 감수성, plasmid profile 및 toxA 유전자 분포

신나리,박주연,박용호,유한상,Shin, Na-ri,Park, Joo-youn,Park, Yong-ho,Yoo, Han-sang 대한수의학회 1999 大韓獸醫學會誌 Vol.39 No.6

Antimicrobial susceptibility, plasmid profiles and distribution of toxA gene were investigated in Pasteurella multocida isolated from pneumonic lung lesions of swine. The bacteria were highly susceptible to norfloxacin, cabenicillin, enrofloxacin and chloramphenicol, but resistant to colistin, sulfamethoxawle/trimethoprime, bacitracin, streptomycin. Sixty percentage of the isolates was resistant more than 2 drugs used in this experiment and 21 strains (23.6%) were resistant more than 5 drugs. This phenomenon meant that they had highly multi-drugs resistance. In the analysis of plasmid profiles, nineteen strains (47.5%) of 40 P multocida isolates harbored plasmids, ranging from 53.3kb to 2.49kb in size and the plasmid profiles could be classified into 5 groups. However, there was no relationship between the size and the profile of plasmid and the resistance pattern of antimicrobial agents. Thirty strains of 39 P multocida isolates (77%) investigated by PCR harbored toxA gene. This result suggested involvement of the ToxA protein expressed from the gene in pneumonic pasteurellosis of swine.

난황항체를 이용한 돼지 호흡기 질병 방제 관한 연구 I. Bordetella bronchiseptica, Pasteurella multocida 및 Actinobacillus pleuropneumoniae의 주요 면역원 분석 및 IgY의 생산

신나리,김종만,유한상,Shin, Na-ri,Kim, Jong-man,Yoo, Han-sang 대한수의학회 2000 大韓獸醫學會誌 Vol.40 No.3

Swine respiratory diseases have induced severe economic losses in swine industry worldwide. Several methods have been developed and applied to prevent and control the disease. However, those are still problematic in swine industry. Recently, the use of egg yolk antibodies with several advantages was introduced and applied to control diseases in animal as well as human. As the first step of the use of egg yolk antibodies in the control of the swine respiratory diseases, we investigated the immunogens of the causative agensts of the diseases and immune response in egg yolk of hens immunized with them. Bacterial antigens prepared from Bordetella bronchiseptica, Pasteurella multocida 3A and 4D, and Actinobacillus pleuropneumaniae serotype 2 and 5 were analyzed by sodium dodecyl sulfate-polyacrylamide gel electrophoresis, Western blot and toxicity test in mice. The antigens were injected into laying hens in order to produce antibodies against them in egg yolk. After chickens were immunized three times in 2 weeks interval, the profile of antibody production was examined by ELISA. The production of antibody in egg yolk was started in 2 weeks after the first injection, reached peak in 6-8 weeks and maintained until 12 weeks. Of two adjuvants used in this study, ISA70 was more effective than aluminum hydroxide gel in enhancing immunogenecity, laying rates and safety in hens. These results suggested that egg yolk antibodies could be a good source for production of antibodies specific to pathogenic bacteria inducing respiratory diseases of swine.

난황항체를 이용한 돼지 호흡기 질병 방제에 관한 연구 II. 면역된 산란계로부터 생산된 난황항체의 특이성 분석

신나리,김종만,최인수,유한상,Shin, Na-ri,Kim, Jong-man,Choi, In-soo,Yoo, Han sang 대한수의학회 2001 大韓獸醫學會誌 Vol.41 No.2

Although several methods have been developed and applied to control swine respiratory diseases, the disease induces severe economic impact to swine industry worldwide. As one of the new trials, application of egg yolk antibody(IgY) was attempted for the purposes and immune response in sera and egg yolk was analysed with ELISA in previous study. In this study, immunological specificity of the IgY was analysed by Western blot analysis. In the analysis of causative agents of atrophic rhinits, B bronchiseptica and P multocida 4D, proteins of 33, 40, 43, 67 and 141 kDa were specifically reacted with IgY Also, 40 and 110 kDa proteins were identified as the major immunogens in P multocida 3A. In A pleuropneumoniae serotypes 2 and 5, 40 kDa and 47 kDa proteins were found to be the major reactive ones. These results suggested that egg yolk antibodies from immunized hens was specific with antigens injected into hens and partially purified antigens, outer membrane proteins and dermonecrotic toxin, were more effective than bacterin for the production of specific antibody.

사회불안과 연인관계 친밀감의 관계: 정서표현성의 조절효과

신나리,임지준,임성문,Shin, Nari,Lim, Jijun,Lim, Sungmoon 충북대학교 교육개발연구소 2018 한국교육논총 Vol.38 No.3

본 연구는 사회불안이 연인관계 친밀감에 영향을 미치는 과정에서 정서표현성의 조절효과를 정서유형과 성차에 주목하여 탐색해보고자 하였다. 즉 사회불안과 연인관계 친밀감 간의 관계에서 긍정 또는 부정 정서표현성이 다른 양상의 조절효과를 갖는지 알아보고, 이때 남녀에 따른 성차가 나타나는지 알아보았다. 이를 위해 현재 연애중인 대학생을 대상으로 사회불안, 정서표현성, 연인관계 친밀감 설문지를 조사하여 얻은 270명(남 131, 여 139)의 자료로 위계적 중다회귀분석을 하였다. 분석결과, 사회불안이 연인관계 친밀감에 미치는 경로에서 정서표현성의 조절효과는 긍정 또는 부정 정서에 따라, 또한 성별에 따라 다른 양상으로 나타났다. 첫째, 남성의 경우 긍정정서 표현성은 사회불안과 연인관계 친밀감의 관계를 유의미하게 조절하는 것으로 나타났고, 부정정서 표현성의 조절효과는 나타나지 않았다. 즉 사회불안이 낮은 남성은 긍정정서 표현이 많으면 긍정정서 표현이 적을 때 보다 연인관계 친밀감이 대폭 상승하지만, 사회불안이 높은 남성은 긍정정서 표현을 많이 해도 연인관계 친밀감이 그다지 증가하지 않았다. 둘째, 여성의 경우 부정정서 표현성은 사회불안과 연인관계 친밀감의 관계를 유의미하게 조절하는 것으로 나타났고, 긍정정서 표현성의 조절효과는 나타나지 않았다. 즉 부정정서 표현이 많을 때는 여성의 사회불안 수준의 높고 낮음에 따라 연인관계 친밀감은 큰 차이를 보이지 않으나, 부정정서 표현이 적을 때는 사회불안이 높은 여성보다 사회불안이 낮은 여성의 연인관계 친밀감이 크게 높았다. 이 결과에 대한 의의와 후속연구를 위한 시사점이 논의에 제시되었다. This was explorative study to exam whether the moderating effects of emotional expressiveness on the relationship between social anxiety and intimacy in romantic relationship were with classificaton of emotional type(positive, negative) and gender(male, female). Data of 270 students were analysed with hierarchical multiple regression analysis. The results were as follow. First, In case of male, positive emotional expressiveness had moderating effect between social anxiety and intimacy in romantic relationship, though negative emotional expressiveness had not. Second, In case of female, negative emotional expressiveness had moderating effect between social anxiety and intimacy in romantic relationship, though positive emotional expressiveness had not. The meaning of results, implications of results, and suggestions for following researches were discussed.

돼지 위축성 비염, 파스튜렐라성 폐렴 및 흉막폐렴 원인균의 주요 항원에 대한 IgG 와 IgY 의 상관 관계 분석

신나리,김종만,유한상,Shin, Na-Ri,Kim, Jong-Man,Yoo, Han-Sang 대한수의학회 2002 大韓獸醫學會誌 Vol.42 No.3

Swine respiratory diseases have induced severe economic lasses in swine industry worldwide. Therefore, several methods have been made and applied to prevent and control the diseases. However, these methods still have a problem and also induce side effects. Recently, the use of egg yolk antibody was introduced to control and prevent the diseases as one of new trials. As a study of using egg yolk antibody, antibody titers against several different antigens of major pathogens in swine respiratory diseases were compared in egg yolk and serum of hens immunized with those antigens. The titers were measured by ELISA using the antigens as coating antigens. The relationship in antibody titers between egg yolk and serum were identified by analysis of variance for linear regression. Almost of antigens used in this study showed the high relationship in antibody titers between egg yolk and serum (r = 0.87 ~ 0.93) even though the relationship in antibody titers against P. multocida A:3 IROMP was slightly low (r = 0.74)(P<0.01). These results indicated that antibody titer in egg yolk could be useful to predict the titer in serum of chicken.

난황항체를 이용한 돼지 호흡기 질병 방제에 관한 연구 III. 마우스에서의 방어 효과

신나리,김종만,유한상,Shin, Na-Ri,Kim, Jong-man,Yoo, Han-Sang 대한수의학회 2001 大韓獸醫學會誌 Vol.41 No.3

As an attempt to control respiratory disease in swine, specific immunologloblin Ys(IgYs) against bacterial pathogens of the diseases were produced and specificity of the IgYs was analysed with Western blot in the previous studies. In this studies, the immunoprotective effects of produced IgY were evaluated in the mice. Mice were challenged with minimal lethal doses of P multocida 3A and 4D, B bronchiseptica and A pleuropneumoniae serotype 2 after intraperitoneal administration of IgY and the protectivity by IgY was dose-dependent at the concentration of 100, 200 and 400 mg/ml. These results suggested that IgY could be a potential immunoprophylactic candidates against those pathogens in swine and apply and effective source of passive immunity for other disease in animals.

어머니의 취업여부에 따른 양육스트레스와 자기효능감 간의 인과적 종단관계 분석

신나리(Na Ry Shin),안재진(Jae Jin Ahn) 한국아동학회 2014 아동학회지 Vol.35 No.5

This study examined the causal relationships between parenting stress and self-efficacy of Korean mothers with an infant according to employment status using the second through fourth wave data of the Panel Study of Korean Children (PSKC). Autoregressive cross-lagged modeling was performed to test the longitudinal reciprocal relationships between the two constructs. Our results indicated that both maternal parenting stress and self-efficacy were consistent over time. The results also indicated that there was a significant cross-lagged effect of maternal parenting stress on their self-efficacy, rather than vice versa. No differences between working and non-working mothers were found in the relationship between the two constructs.

기혼여성의 취업 여부에 따른 둘째자녀 출산의도

신나리(Shin, Nary) 한국생활과학회 2013 한국생활과학회지 Vol.22 No.3

산전후 우울 변화-성장혼합모형을 이용한 단기종단연구

신나리 ( Na Ry Shin ) 대한가정학회 2011 Family and Environment Research Vol.49 No.9

This study examined whether there are underlying latent classes of growth trajectories of maternal depression in the Korean population. Data from the first phase of the Panel Study of Korean Children (PSKC) of the Institute of Child Care and Education (KICCE) were used for this study. The final sample of participants included 1,471 mothers, who completed three interviews: at birth, at one month, and at four months. A two-class model consisting of depression (12.3%) and non-depression (87.7%) was considered the best-fitting solution using Mplus 3.13. The changes in postnatal depression in the Korean population within four weeks after childbirth, which is the period of "postpartum onset", seem to be important. Logistic regression analysis showed that duration of breast-feeding and planned pregnancy effects were significantly associated with trajectory class membership.