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( Yuying Wang ),( Xue Yan ),( Weiwei Zhang ),( Yuanyuan Liu ),( Deping Han ),( Kedao Teng ),( Yunfei Ma ) 한국미생물생명공학회(구 한국산업미생물학회) 2019 Journal of microbiology and biotechnology Vol.29 No.6
Farm animals such as piglets are often affected by environmental stress, which can disturb the gut ecosystem. Antibiotics were commonly used to prevent diarrhea in weaned piglets, but this was banned by the European Union due to the development of antibiotic resistance. However, the use of probiotics instead of antibiotics may reduce the risk posed by pathogenic microorganisms and reduce the incidence of gastrointestinal diseases. Therefore, this study was conducted to investigate the effects of Lactobacillus casei Zhang on the mechanical barrier and immune function of early-weaned piglets infected using Escherichia coli K88 based on histomorphology and immunology. Fourteen-day-old weaned piglets were divided into a control group and experimental groups that were fed L. casei Zhang and infected with E. coli K88 with or without prefeeding and/or postfeeding of L. casei Zhang. The L. casei Zhang dose used was 107 CFU/g diet. Jejunum segments were obtained before histological, immunohistochemical, and western blot analyses were performed. In addition, the relative mRNA expression of toll receptors and cytokines was measured. Piglets fed L. casei Zhang showed significantly increased jejunum villus height, villus height-crypt depth ratio, muscle thickness, and expression of proliferating cell nuclear antigen and tight junction proteins ZO-1 and occludin. The use of L. casei Zhang effectively reduced intestinal inflammation after infection. We found that L. casei Zhang feeding prevented the jejunum damage induced by E. coli K88, suggesting that it may be a potential alternative to antibiotics for preventing diarrhea in early-weaned piglets.
Yan‐xin Zhang,Wei Hua,Lin‐han Wang,Zhuo Che,Xiu‐rong Zhang 한국유전학회 2010 Genes & Genomics Vol.32 No.3
The molecular genetic diversity of 404 indigenous landraces from sesame core collection in China were evaluated by 11SRAP and 3 SSR markers, 175 fragments were generated, of which 126 were polymorphic with an average polymorphism rate of 72%. Jaccard’s genetic similarity coefficients (GS=0.7130), Nei's gene diversity (h=0.2418) and Shannon's Information index (I=0.3847) were calculated, a dendrogram of the 404 landraces was made, landraces from various zones were distributed throughout the dendrogram, accessions from different agro‐ecological zones were indistinguishable by cluster analysis, geographical separation did not generally result in greater genetic distance, a similar pattern was obtained using principal coordinates (PCO) analysis. As to seven agro‐ecological zones, the maximum Nei’s gene diversity (h = 0.2613)and Shannon index (I = 0.3980) values in zone VII indicated that they were genetically more diverse than those in other zones, while the least genetically diverse region was zone III (h = 0.1772, I = 0.2858). Nei's genetic identity and genetic distance among landraces from seven agro‐ecological zones were also analyzed, the genetic relationship of seven zones was inferred using the UPGMA method. This study demonstrated that SRAP and SSR markers were appropriate for evaluation of sesame genetic diversities. There existed extensive genetic diverse among indigenous landraces and the abundance of genetic diversity of landraces in different agro‐ecological zones was various. Understanding of these characteristics of indigenous landraces in China can provide theoretical foundation for further collection, effective protection and reasonable utilization of these sesame landraces in breeding.
Xiaozhong Zhang,Jian-Feng Li,Yan Cui,Mostafa Habibi,H. Elhosiny Ali,Ibrahim AlBaijan,Tayebeh Mahmoudi 국제구조공학회 2023 Steel and Composite Structures, An International J Vol.49 No.3
This article focuses on the study of the buckling behavior of two-dimensional functionally graded (2D-FG) nanosize tubes, including porosity, based on the first shear deformation and higher-order theory of the tube. The nano-scale tube is simulated using the nonlocal gradient strain theory, and the general equations and boundary conditions are derived using Hamilton’s principle for the Zhang-Fu’s tube model (as a higher-order theory) and Timoshenko beam theory. Finally, the derived equations are solved using a numerical method for both simply-supported and clamped boundary conditions. A parametric study is performed to investigate the effects of different parameters, such as axial and radial FG power indices, porosity parameter, and nonlocal gradient strain parameters, on the buckling behavior of the bi-dimensional functionally graded porous tube. Keywords: Nonlocal strain gradient theory; buckling; Zhang-Fu’s tube model; Timoshenko theory; Two-dimensional functionally graded materials; Nanotubes; Higher-order theory.
객체 관계형 데이타베이스 관리 시스템을 이용한 디지털 앨범의 설계 및 구현
이준서,장염승,한기준 건국대학교 산업기술연구원 2000 건국기술연구논문지 Vol.25 No.-
As the storage capacity of a computer system is rapidly increasing and the cost of computer hardware is decreasing continuously, users can easily manage multimedia data on the personal computer. Especially, various image view programs are widely used to manage image files at the present time. However, since most of these programs do not use a database management system(DBMS), it is very difficult for users to use them efficiently. In this paper, we designed and implemented a Digital Album by using an object-relational database management system, called PARODY(Persistent, Almost, Relational Object Database sYstem) that implements a persistent object database with a relatively simple interface to its C++ class library. Since PARODY is used as a data storage manager of the Digital Album, users can manage(i.e., insert, update, and delete) an image database and search for the required image data from the image database easily. In addition, we use OWL(Object Windows Library) of Borland C++ to implement the user interface of the Digital Album efficiently.
A New ent-Kaurane type Diterpenoid Glycoside from Inula japonica Thunb
Jiang Jiang Qin,Jia Xian Zhu,Wei Dong Zhang1,2,Yan Zhu,Jian Jun Fu,Xiao Hua Liu,Hui Zi Jin 대한약학회 2009 Archives of Pharmacal Research Vol.32 No.10
A new ent-kaurane type diterpenoid glycoside, 17-O-β-D-glucopyranosyl-16α-ent-kauran-19-oic acid (1), together with 17-hydroxy-16α-ent-kauran-19-oic acid (2), 16α,17-dihydroxyl-ent-kauran-19-oic acid (3), and 16α-hydroxy-17-acetoxy-ent- kauran-19-oic acid (4) were isolated from the aerial parts of Inula japonica Thunb. The structure of 1 was determined mainly by use of 1D and 2D NMR spectroscopic techniques including HSQC, 1H-1H COSY, HMBC, and NOESY. In addition, 4 exhibited significant inhibitory activity on NO production in LPS-stimulated RAW264.7 cells with IC50 value of 14.3 μg/mL.
쾌락과 실용적 혜택으로부터 추출된 중국 여성 소비자의 격정적 브랜드소비에 대한소비감정적 영향의 효과에 관한 연구
( Yan Jie Zhang ),( Moon Hong Kim ) 한국유통경영학회(구 한국유통정보학회) 2013 유통정보학회지 Vol.16 No.2
본 연구는 중국여성소비자들의 소비행동을 이해하고자 브랜드격정적 소비(BPC)에 대해 연구한다. 연구는 쾌락과 실용적 혜택이 긍정적 혹은 부정적 소비 감성으로 연결된다는 것과, 그리고 중국여성 소비자들의 브랜드격정적 소비를 발생시키는 것을 파악하였다. 선행연구를 보완하기 위해, 본 연구는 중국여성소비자들이 선호하는 브랜드에 대한 브랜드격정적 소비의 모든 과정을 포함하여 검토하는데 목적을 두고 있다. 연구는 실증적 연구를 통하여 약간의 공헌을 하고 있다. 학술적으로, 본 연구는 BPC프로세스를 설명하기 위한 확고한 이론적 틀과 함께 여성소비지들의 BPC연구를 제공한다. 둘째, 본 연구에서는 각 영역에 속한 변수의 효과에 대해 비교한다. 셋째, 본 연구는 이전의 연구에 비해서 기업의 경영자들에게 중국여성소비자들에 대한 좀 더 완전한 정보를 제공한다. 넷째, 본 연구의 결과는 브랜드격정적 소비가 충동적 구매와 다르다는 것을 알 수 있게 해준다. 마지막으로, 본 연구의 결과는 마케터와 디자아너들에게 의미 있는 함축적 의미를 제공해준다. 이러한 연구결과는 BPC을 형성하기 위한 소비감성의 중요성을 나타내고 있다. This article researched brand passionate consumption (BPC) for under standing Chinese female consumer`s behavior, the study revealed that hedonic/utilitarian benefits lead 10 positive or negative consumption emotions, and then generate brand passionate consumption on Chinese female consumers. To address the voids of previous research, this research aims to examine Chinese female consumers BPC process toward a consumer beloved apparel brand, incorporating the antecedents and a consequence of the process. This research makes several contributions through empirical study. Academically, the study provides female consumers BPC research with a stronger theoretical framework to explain the BPC process. Second, this study compares effect of dimensions of variable to each other. Third, finding of this Study provides firm managers with more definitive information on Chinese female consumers than previous studies have. Fourth, finding of this study provides BPC difference with impulsive purchase. Finally, the findings of this study provide meaningful implications for marketers and designers. This finding indicates the importance of consumption emotions for forming BPC.
Zhang, Xiong,Jin, Fen-Shu,Zhang, Li-Guo,Chen, Rui-Xue,Zhao, Jin-Hui,Wang, Yan-Nan,Wang, En-Fu,Jiang, Zhen-Dong Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.7
Increasing scientific evidence suggests that ribonucleotide reductase M1 (RRM1) may be a powerful predictor of survival in patients with pancreatic cancer treated with adjuvant gemcitabine-based chemotherapy after operative resection, but many existing studies have yielded inconclusive results. This meta-analysis aimed to assess the prognostic role of RRM1 in predicting survival in patients with pancreatic cancer treated with gemcitabine. An extensive literature search for relevant studies was conducted on PubMed, Embase, Web of Science, Cochrane Library, and CBM databases from their inception through May 1st, 2013. This meta-analysis was performed using the STATA 12.0 software and crude hazard ratios (HRs) with 95% confidence intervals (CIs) were calculated. Eight clinical studies were included in this meta-analysis with a total of 665 pancreatic cancer patients treated with adjuvant gemcitabine-based chemotherapy, including 373 patients in the high RRM1 expression group and 292 patients in the low RRM1 expression group. Our meta-analysis revealed that high RRM1 expression was associated with improved overall survival (OS) of pancreatic cancer patients (HR=1.56, 95%CI=0.95-2.17, P<0.001). High RRM1 expression also was linked to longer disease-free survival (DFS) than low RRM1 expression (HR=1.37, 95%CI=0.25-2.48, P=0.016). In conclusion, our meta-analysis suggests that high RRM1 expression may be associated with improved OS and DFS of pancreatic cancer patients treated with adjuvant gemcitabine-based chemotherapy. Detection of RRM1 expression may be a promising biomarker for gemcitabine response and prognosis in pancreatic cancer patients.