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      • SCIESCOPUSKCI등재

        Effects of Bedding Material Composition in Deep Litter Systems on Bedding Characteristics and Growth Performance of Limousin Calves

        Meng, J.,Shi, F.H.,Meng, Qingxiang,Ren, L.P.,Zhou, Z.M.,Wu, H.,Zhao, L.P. Asian Australasian Association of Animal Productio 2015 Animal Bioscience Vol.28 No.1

        The objective of this study was to evaluate the effects of different litter mixture compositions on bedding system temperature, pH and volatile fatty acid and ammonia-N ($NH_3$-N) content, and the serum physico-chemical parameters and growth indices of calves. Thirty-two Limousin calves ($280{\pm}20kg$) were randomly assigned to four groups (n = 8 for each group) according to the bedding system used: i) control with soil only (CTR); ii) mixture with 50% paddy hulls (PH), 30% saw dusts (SD), 10% peat moss (PM) and 10% corn cobs (CC) (TRT1); iii) mixture with 15% PH, 15% SD, 10% PM, 40% CC, and 20% corn stover (CS) (TRT2); iv) mixture with 30% PH, 10% PM, 40% CC, and 20% CS (TRT3). The litter material combinations of different treatments were based on the cost of bedding system materials in China. The cost of four treatments from low to high: Control<TRT1<TRT2<TRT3. The control was no-cost treatment. The diet consisted of 60.8% silage and 39.2% concentrate (dry matter [DM] basis). The $NH_3$-N level (271.83 to 894.72 mg/kg) was lowest for TRT1 (p<0.0001) and highest for TRT2 (p<0.0001). The acetate, propionate and butyrate levels were highest for the control group (p<0.0001). In all the groups, the pH value (6.90 to 9.09) increased at the beginning and later remained stable at below 9.09. The temperature of deep litter increased at the first week and reached the maximum ($42.1^{\circ}C$) on day 38. 3,5,3'-Triiodothyronine ($T_3$) levels in the TRT1 group animals (p<0.0001) were lower than those in the control and TRT2 animals. 3,5,3',5'-Tetraiodothyronine ($T_4$) in the TRT1 group (p = 0.006) was lower than that in the other treatment groups. Cortisol (COR) in the control and TRT1 group was lower (p<0.0001) than that in the TRT2 and TRT3 groups. Corticosterone (CORt) in the control group was higher (p<0.0001) than that in the treatment groups. The findings indicate that the deep litter bedding systems provided better conditions for animal health and growth performance compared with the control system. Furthermore, the litter composition of TRT1 was found to be optimal among the three treatment groups.

      • Genetic Variations in TERT-CLPTM1L Genes and Risk of Lung Cancer in a Chinese Population

        Zhao, Meng-Meng,Zhang, Yue,Shen, Li,Ren, Yang-Wu,Li, Xue-Lian,Yin, Zhi-Hua,Zhou, Bao-Sen Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.6

        Background: This study was conducted to investigate the association between single nucleotide polymorphisms (SNPs) in telomerase reverse transcriptase (TERT) and cleft lip and palate transmembrane1-like (CLPTM1L) and lung cancer risk in a Chinese population. Methods: We performed a hospital-based case-control study, including 980 lung cancer cases and 1000 cancer-free controls matched for age and sex. Each case and control was interviewed to collect information by well-trained interviewers. A total of 5 ml of venous blood was collected for genotype testing of TERT rs2736098 and CLPTM1L rs401681 using TaqMan methodology. Results: The results revealed that the variant homozygote TERT rs2736098TT was associated with an increased risk of lung cancer (OR=2.017, 95%CI=1.518-2.681), especially lung adenocarcinoma (OR=2.117, 95%CI=1.557-3.043) and small cell carcinoma (OR=1.979, 95%CI: 1.174-3.334), compared with the TERT rs2736098CC genotype. Similar results were observed in non-smokers. Conclusion: The TERT rs2736098 polymorphism might affect the susceptibility to lung cancer in Chinese populations. The associations need to be verified in larger and different populations.

      • KCI등재

        Effects of Bedding Material Composition in Deep Litter Systems on Bedding Characteristics and Growth Performance of Limousin Calves

        J. Meng,F.H. Shi,Q.X. Meng,L.P. Ren,Z.M. Zhou,H. Wu,L.P. Zhao 아세아·태평양축산학회 2015 Animal Bioscience Vol.28 No.1

        The objective of this study was to evaluate the effects of different litter mixture compositions on bedding system temperature, pH and volatile fatty acid and ammonia-N (NH3-N) content, and the serum physico-chemical parameters and growth indices of calves. Thirty-two Limousin calves (280±20 kg) were randomly assigned to four groups (n = 8 for each group) according to the bedding system used: i) control with soil only (CTR); ii) mixture with 50% paddy hulls (PH), 30% saw dusts (SD), 10% peat moss (PM) and 10% corn cobs (CC) (TRT1); iii) mixture with 15% PH, 15% SD, 10% PM, 40% CC, and 20% corn stover (CS) (TRT2); iv) mixture with 30% PH, 10% PM, 40% CC, and 20% CS (TRT3). The litter material combinations of different treatments were based on the cost of bedding system materials in China. The cost of four treatments from low to high: Control<TRT1<TRT2<TRT3. The control was no-cost treatment. The diet consisted of 60.8% silage and 39.2% concentrate (dry matter [DM] basis). The NH3-N level (271.83 to 894.72 mg/kg) was lowest for TRT1 (p<0.0001) and highest for TRT2 (p<0.0001). The acetate, propionate and butyrate levels were highest for the control group (p<0.0001). In all the groups, the pH value (6.90 to 9.09) increased at the beginning and later remained stable at below 9.09. The temperature of deep litter increased at the first week and reached the maximum (42.1°C) on day 38. 3,5,3′-Triiodothyronine (T3) levels in the TRT1 group animals (p<0.0001) were lower than those in the control and TRT2 animals. 3,5,3′,5′-Tetraiodothyronine (T4) in the TRT1 group (p = 0.006) was lower than that in the other treatment groups. Cortisol (COR) in the control and TRT1 group was lower (p<0.0001) than that in the TRT2 and TRT3 groups. Corticosterone (CORt) in the control group was higher (p<0.0001) than that in the treatment groups. The findings indicate that the deep litter bedding systems provided better conditions for animal health and growth performance compared with the control system. Furthermore, the litter composition of TRT1 was found to be optimal among the three treatment groups.

      • KCI등재

        콘텐츠 내부요인과 현지시장 외부요인을 활용한 대중문화 콘텐츠 소비 결정요인 분석

        임몽로 ( Ren Meng-lu ),조혁수 ( Cho Hyuk-soo ),백설 ( Bai Xue ),번영 ( Fan Rong ) 한국통상정보학회 2018 통상정보연구 Vol.20 No.1

        본 연구는 대중문화 콘텐츠 소비 결정요인에 대한 분석을 실시하였다. 한국 드라마를 시청하는 중국소비자에 초점을 맞추어 실증분석을 진행하였다. 종속변수(대중문화 콘텐츠 소비) 관련 8개의 독립변수가 설정되었다. 이 중 내용 완성도, 유교적 전통요소, 현대적 감각, 출연자의 인지도는 내부적인 요인을 설명하고 있으며, 접근 용이성, 기술적 진보, 현지 정부 규제, 대중적 관심은 외부적 요인을 반영하고 있다. 이와 함께 조절변수(문화적 근접성) 관련 영향력도 분석하였다. 한국 드라마를 시청하는 중국소비자로부터 자료를 수집하였으며, 구체적으로 447개의 응답 자료가 활용되었다. 구조방정식 분석 결과, 내용 완성도, 현대적 감각, 출연자의 인지도, 기술적 진보, 대중적 관심이 대중문화 콘텐츠 소비에 긍정적인 영향을 미칠 수 있음이 확인되었다. 흥미로운 사실은 정부 규제는 오히려 대중문화 콘텐츠 소비 상승으로 연결될 수 있었다. 문화 근접성 관련 조절효과는 제한적으로만 확인되었다. The purpose of this study is to investigate determinants of consuming popular culture contents with content’s characteristics and external environments. The case of Chinese consumers who enjoy Korean dramas was empirically examined. Based on the previous studies, we set internal factors of consuming popular culture contents such as performance quality, confucian value, modern style, and actor popularity. External factors including accessibility, technology advancement, government regulation, and isomorphism among consumers were determined. The eight variables are independent variables in terms of the dependent variable, consumption of popular culture contents. Also, the moderating effects of cultural proximity were discussed regarding the relationships between the dependent variable and eight independent variables. This study collected data from Chinese consumers who enjoy Korean dramas. In specific, 447 responses were used to verify hypotheses based on previous studies and theoretical foundations. The collected data were empirically tested by SEM(Structural Equation Modeling) with SPSS and AMOS statistical programs. According to the empirical findings, performance quality, modern style, and actor popularity did play an important role to increase the consumption of popular culture contents. Also, technology advancement and isomorphism among consumers may increase the consumption. Increasingly, unlike the hypothesis, government regulation can be positive to increase the consumption. Limited moderating effects could be supported by the empirical findings.

      • KCI등재

        Isolation and enzymatic characterization of the first reported hyaluronidase from Yak (Bos grunniens) testis

        Ru-ren Li,Qun-li Yu,Ling Han,Liang-yan Rong,Meng-meng Yang,Mai-rui An 한국화학공학회 2014 Korean Journal of Chemical Engineering Vol.31 No.11

        A novel hyaluronidase (BgHya1) from Yak testis was isolated and shown to have compara-tively high activity on sodium hyaluronate. However, surveys on BgHya1 are still limited. The enzyme was purifiedthrough gel filtration on Sephacryl S-100 and cation-exchange on SP Sepharose fast flow; the purity was confirmedby a reverse phase FPLC Shodex C4 column. The specific activity of the purified BgHya1 was 20.4 U/mg assayed bythe colorimetric method against 0.85 U/mg for the crude enzyme, representing a 24-fold purification. It was a monomericprotein of 55 kDa estimated by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) and SephacrylS-200. It exhibited maximum activity in the presence of 0.15 M NaCl at 37 oC, pH 3.8, and a specificity to sodiumhyaluronate higher than that of chondroitin-4-sulfate, chondroitin-6-sulfate, and dermatan. The Km value for BgHya1,using sodium hyaluronate as substrate, was 0.106 mg/mL. Activity of BgHya1 was inhibited mildly by Ca2+and Fe2+,and significantly by Fe3+, Mg2+, EDTA, urea, heparin, and 0.5 M NaCl. It was not affected by Cu2+,Zn2+,Co2+, ascorbicacid, PMSF, DTT, glutathione (reduced), or L-cysteine. BgHya1 was shown to be heat unstable in the range of 4-45 oC. In terms of storage stability, 92% of the activity was retained after four weeks at 4 oC, and 58% at room temperature. In addition, adding BSA (1.0 mg/mL) to the enzyme sample prior to freezing resulted in complete retention of enzymeactivity. This work yielded a high purity hyaluronidase, the first one isolated from by-product.

      • Study on Combustible Classification Method Based on Optimized BP Neural Network

        Meng ZHU,Lei ZHAO,Honge REN 보안공학연구지원센터 2016 International Journal of Hybrid Information Techno Vol.9 No.5

        In this paper, combustible classification method based on optimized BP neural network is applied by referring to existing combustible classification method and aiming at the vegetation in the region of Hannuo River in Greater Higgnan Mountains. Combustible classification method based on ground type and stand factor is used according to features of BP neural network model. The results indicate that the classification method proposed in this paper owns high precision and good robustness.

      • KCI등재

        Rapid Screening of Maize Inbred Lines Based on NIR-MIR Spectral Characteristics and Small-molecule Metabolites

        Meng Ting Li,Ren Jie Yang,Hai Xue Liu,Yang Liu,Xiao Qian Zhang,Xiao Dong Xie 한국작물학회 2018 Journal of crop science and biotechnology Vol.21 No.4

        Near-infrared (NIR), Mid-infrared (MIR) spectroscopy and Gas chromatography -mass spectrometry (GC-MS) combined with principal component analysis (PCA) were used to preliminarily select suitable maize parents that can be further employed in future breeding process. Especially, a new matrix was innovatively developed in terms of metabolic components, and used for PCA. Firstly, the quality maize seeds were selected based on the score plots from PCA of NIR, MIR, fusion of NIR and MIR, and GC-MS. Then, the potential biomarkers, including phenol, propionic acid, DL-malic acid, L-valine, which have great influence on the selection of quality maize seeds, were confirmed based on the loading plots from PCA of GC-MS and MIR spectral data. Finally, the quantitative analysis of partial biomarkers for selected parents was carried based on GC-MS method. The selected suitable maize parents were further confirmed by the difference of biomarkers contents. The results showed that NIR, MIR, and GC-MS combined with PCA are as rapid, convenient analysis methods, and can be thus employed for future maize breeding process.

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