의복설계를 위한 중국 남·북 지역과 한국의 체형 비교 연구 - 30대 성인 여성을 중심으로 -

추가용 ( Jia Rong Zou ),남윤자 ( Yun Ja Nam ),김경선 ( Kyoung Sun Kim ) 한국의류산업학회 2018 한국의류산업학회지 Vol.20 No.2

This study compares body types among the Korean, Northern Chinese and South Chinese women in their thirties. The subjects of this study are 30-39 year old females that consisted of 200 people from Southern China, 200 people from Northern China, and 202 people from Korea. The results are as follows. There are differences among Northern Chinese, Southern Chinese and Korean women. Korean women are taller than both regions of Chinese women, hip height measurement and waist height measurement of Korean women's are higher than Chinese women, it means that Korean women's lower body parts are longer than Chinese women. Northern Chinese women have the highest circumference measurements and depth measurements; however, Southern Chinese women have similar measurements with Korean women. The body type classification according to the GB/T 1335.2-2008 shows that Northern and Southern Chinese women have different body types. Southern Chinese women are mainly in “A body type” and Northern Chinese women are mainly in “B body type”. The body type classification according to the KS K 0051 shows that Chinese women are all mainly “H body type”, Korean women are mostly in “A body type”. This study articulated specific differences in body types among Southern Chinese, Northern Chinese, and Korean women, especially between Northern and Southern Chinese women. This study provides basic data for Chinese female somatotype research and Korean fashion brands.

Influence of overhead transmission line on grounding impedance measurement of substation

Zeng, Rong,He, Jinliang,Lee, Jaebok,Chang, S.,Tu, Youping,Gao, Yanqing,Zou, Jun,Guan, Zhicheng IEEE 2005 IEEE transactions on power delivery Vol.20 No.2

How to precisely measure the grounding impedance of large-scale substations is a fundamental guarantee for the safe operation of power systems. If the ground wires were connected to the grounding grid, these ground wires would shunt a part of the injected measuring current and allow the measured grounding impedance to be smaller than the actual impedance of the grounding system. Based on an actual 500-kV grounding system, this paper discusses how to analyze the influence of the overhead ground wire on the measured grounding impedance and how to obtain the real grounding impedance of the grounding system. A numerical analysis model considering the grounding system, the transmission lines, towers, and their grounding devices, based on the multilayer soil model analyzed from field test data of apparent soil resistivity, was constructed to analyze the influence of ground wires and tower grounding resistances on grounding impedance, and the general effects of different parameters, such as tower impedance, grounding impedance, and circuits of transmission lines, were analyzed. The real grounding impedance of the substation with connected overhead ground wires was validated, and some useful results have been obtained, based on the field-measured values and numerical analysis.

Comparison of antibiotic resistance and copper tolerance of Enterococcus spp. and Lactobacillus spp. isolated from piglets before and after weaning

Xueting Zou,Mengwei Weng,Xu Ji,Rong Guo,Weijiang Zheng,Wen Yao 한국미생물학회 2017 The journal of microbiology Vol.55 No.9

In China, antimicrobials and copper are used extensively as growth-promoting agents for piglets. This study aimed to characterize the role of in-feed copper in the emergence of copper-tolerant and antibiotic-resistant Enterococcus and Lactobacillus isolates in Chinese pig farms. Feces of the same eight piglets from four litters at 7 and 55 days old and their mothers were traced in order to isolate Enterococcus spp. and Lactobacillus spp.. The minimum inhibitory concentrations of 10 antimicrobials and copper sulfate were determined using an agar dilution method. The feed levels of Cu2+ for lactating sows, suckling piglets, and weaned piglets were 6, 177, and 18 mg/kg, respectively. All the 136 Enterococcus isolates were sensitive to vancomycin; and the resistance rates to penicillin, enrofloxacin, and high level streptomycin resistance increased significantly after weaning. For the 155 Lactobacillus isolates, the resistance rates to ampicillin, chloramphenicol, tetracycline, and enrofloxacin were significantly higher in weaned piglets. The ratios of copper tolerant Enterococcus and Lactobacillus isolates both increased significantly after weaning (P < 0.05). A phenotypic correlation was observed after classifying the isolates into two groups (CuSO4 MIC50 < 16 or 16 for enterococci; CuSO4 MIC50 < 12 or 12 for lactobacilli) and comparing the antimicrobial-resistant percentage of two groups. On species level, a significant increase of E. faecalis to enrofloxacin was observed in line with the increase of copper MIC (P < 0.05). The findings revealed the changes of the antibiotic resistance and copper tolerance level of enterococci and lactobacilli between suckling and weaned piglets and demonstrated that there might be a strong association between in-feed copper and increased antibiotic resistance in enterococci and lactobacilli in Chinese intensive swine farms.

Removal of aqueous vanadium(V) by green synthesized iron nanoparticles supported on corn straw biochar

Kun Rong,Xueping Li,Qian Yang,Ruimin Li,Zaiwang Zhang,Meiling Zou,Huanqiang Zheng,Juanjuan Liu 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.120 No.-

Iron nanoparticles supported on corn straw biochar (PE-FeNPs@BC) were used to remove V(V). This materialwas prepared by using Yali pear peel extract-supported iron nanoparticles (PE-FeNPs) as the functionalbody and corn straw biochar (BC) as the support. The synthesis conditions such as Fe/C massratio and synthesis temperature were optimized. The material was characterized by SEM-EDS, FTIR,XRD, and XPS. The results showed that particle agglomeration was reduced, and the dispersion wasimproved after PE-FeNPs were supported on BC. The removal effect was better in the pH range of 2–6,and the removal efficiency was the highest at pH 3.7. At 25 ℃ and pH 3.7, the maximum adsorptioncapacity qm of V(V) was 362.7 mg/g, and 95.1 % of 90 mg/L V(V) was removed. The coexisting NaCl orNaNO3 had a weaker effect on the removal of V(V). The adsorption reactions followed the pseudosecond-order model and Langmuir model, and chemical adsorption was the dominant process. The mainreaction mechanism of PE-FeNPs@BC with V(V) was as follows: adsorbed V5+ was reduced to V4+ by Fe0and Fe2+ and then removed by co-precipitation in the forms of xFe2O3yV2O5zH2O and VO2H2O. Thisstudy promotes the reuse of waste pear peel and can provide an environmentally friendly method forremoving V(V) pollution.

Effects of miR-155 Antisense Oligonucleotide on Breast Carcinoma Cell Line MDA-MB-157 and Implanted Tumors

Zheng, Shu-Rong,Guo, Gui-Long,Zhai, Qi,Zou, Zhang-Yong,Zhang, Wei Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.4

Diverse studies have shown that miR-155 is overexpressed in different tumor types. However, the precise molecular mechanism of the ectopic expression of miR-155 in breast cancer is still poorly understood. To further explore the role of miR-155 in breast tumorigenesis, we here assessed the influence of miR-155 antisense oligonucleotide (miR-155 ASO) on MDA-MB-157 cell viability and apoptosis in vitro. Furthermore, the effects of inhibitory effects of miR-155 on the growth of xenograft tumors in vivo were determined with performance of immunohistochemistry to detect expression of caspase-3, a pivotal apoptosis regulatory factor, in xenografts. Transfection efficiency detected by laser confocal microscope was higher than 80%. The level of miR-155 expression was significantly decreased (P<0.05) in the cells transfected with miR-155 ASO, compared with that in cells transfected with a negative control. After being transfected with miR-155 ASO, the viability of MDA-MB-157 cells was reduced greatly (P<0.05) and the number of apoptotic cells was increased significantly. Additionally, miR-155 ASO inhibited the growth of transplanted tumor in vivo and significantly increased the expression of caspase-3. Taken together, our study revealed that miR-155 ASO can induce cell apoptosis and inhibit cell proliferation in vitro. Moreover, miR-155 ASO could significantly repress tumor growth in vivo, presumably by inducing apoptosis via caspase-3 up-regulation. These findings provide experimental evidence for using miR-155 as a therapeutic target of breast carcinoma.

Self-adaptive and Bidirectional Dynamic Subset Selection Algorithm for Digital Image Correlation

( Wenzhuo Zhang ),( Rong Zhou ),( Yuanwen Zou ) 한국정보처리학회 2017 Journal of information processing systems Vol.13 No.2

The selection of subset size is of great importance to the accuracy of digital image correlation (DIC). In the traditional DIC, a constant subset size is used for computing the entire image, which overlooks the differences among local speckle patterns of the image. Besides, it is very laborious to find the optimal global subset size of a speckle image. In this paper, a self-adaptive and bidirectional dynamic subset selection (SBDSS) algorithm is proposed to make the subset sizes vary according to their local speckle patterns, which ensures that every subset size is suitable and optimal. The sum of subset intensity variation (η) is defined as the assessment criterion to quantify the subset information. Both the threshold and initial guess of subset size in the SBDSS algorithm are self-adaptive to different images. To analyze the performance of the proposed algorithm, both numerical and laboratory experiments were performed. In the numerical experiments, images with different speckle distribution, different deformation and noise were calculated by both the traditional DIC and the proposed algorithm. The results demonstrate that the proposed algorithm achieves higher accuracy than the traditional DIC. Laboratory experiments performed on a substrate also demonstrate that the proposed algorithm is effective in selecting appropriate subset size for each point.

Residual Stress in Oil and Gas Pipelines with Two Types of Dents during Different Lifecycle Stages

Ying Wu,Rong Zou,Yihuan Wang,Guojin Qin 대한토목학회 2020 KSCE JOURNAL OF CIVIL ENGINEERING Vol.24 No.6

The residual stress at a dented area is critical to oil and gas pipelines’ integrity and safe operation. A three-dimensional (3D) finite element-based model was developed to investigate the residual stresses in two typical dented areas during the lifecycle stages (pipeline construction and pipeline operation stages). Use of this model enables study of the distribution of the maximum residual stress (σRS) in the dented area. The effects of indenter size, pipeline size, internal pressure and dent depth on the residual stress of two types of dented pipelines were analyzed. A nonlinear regression analysis was used to obtain multi-factor formulas for predicting the σRS for different dents during different lifecycle stages. The results show that the σRS distribution in the dented area changes with dent depth. With σRS for a transversal dent being almost always greater than that for a longitudinal dent. During the pipeline construction stage, the influence of indenter size or pipeline size on σRS is almost the same for the two types of dent, whereas, during the pipeline operation stage, the influences are distinct. The tendency for pipeline size to affect σRS differs slightly as the dent depth increases. Multivariate fitting formulas can provide a reference for estimating σRS.

A New Large-Scale Plane-Strain Permeameter for Gravelly Clay Soil under Stresses

Yu-Hua Zou,Qun Chen,Chang-Rong He 대한토목학회 2013 KSCE JOURNAL OF CIVIL ENGINEERING Vol.17 No.4

A large-scale plane-strain permeameter was designed to investigate the hydraulic characteristics of gravelly clay base soil and a filter under various stresses and different water heads. The apparatus provides a specimen size about 80 cm long, 40 cm wide and 40cm high. It is equipped with a horizontal and vertical loading system with capacities of 1000 kN in the horizontal direction and 2000kN in the vertical direction and a water pressure system which can provide water head up to 300 m. The components of the planestrain permeameter are described in detail in this paper. The performance of the permeameter is demonstrated through a group of tests on specimens combining gravelly clay soil and a filter.

Modelling the Construction of a High Embankment Dam

Qun Chen,Yu-Hua Zou,Min Tang,Chang-Rong He 대한토목학회 2014 KSCE Journal of Civil Engineering Vol.18 No.1

Appropriate layer quantity has been considered to model the sequential construction of a high embankment dam over 300 m and its effect on the predicted settlement of the 314 m high Shuangjiangkou dam has been discussed. The simulation results have demonstrated that at least 25 layers are required to accurately model the stage construction of a high embankment dam over 300 m. The stress and deformation within the dam and the foundation during the dam construction and reservoir filling have been simulated using finite element analysis. Saturated-unsaturated seepage theory is used to analyse the transient seepage field in the dam and in the foundation. Two different cases about the construction and the operation are modelled. One involves gradual reservoir filling after the completion of sequential construction, whereas the other involves sequential construction and reservoir impounding by several interleaved stages. The simulation results for both cases have been compared and discussed.

Evaluation of coat color inheritance and production performance for crossbreed from Chinese indigenous Chenghua pig crossbred with Berkshire

Li Yujing,Yuan Rong,Gong Zhengyin,Zou Qin,Wang Yifei,Tang Guoqing,Zhu Li,Li Xuewei,Jiang Yanzhi 아세아·태평양축산학회 2022 Animal Bioscience Vol.35 No.10

Objective: This work was to determine coat inheritance and evaluate production performance for crossbred pigs from Berkshire×Chenghua (BC) compared with Chinese indigenous Chenghua (CH) pigs. Methods: The coat color phenotypes were recorded for more than 16,000 pigs, and the genotypes of melanocortin 1 receptor (MCIR) gene were identified by sequencing. The reproductive performance of 927 crossbred BC F4 gilts and 320 purebred CH gilts was recorded. Sixty pigs of each breed were randomly selected at approximately 60 days of age to determine growth performance during fattening period, which lasted for 150 days for BC pigs and 240 days for CH pigs. At the end of the fattening period, 30 pigs of each breed were slaughtered to determine carcass composition and meat quality. Results: The coat color of BC pigs exhibits a “dominant black” hereditary pattern, and all piglets derived from boars or sows genotyped ED1ED1 homozygous for MC1R gene showed a uniform black coat phenotype. The BC F4 gilts displayed a good reproductive performance, showing a higher litter and tear size and were heavier at farrowing litter and at weaning litter than the CH gilts, but they reached puberty later than the CH gilts. BC F4 pigs exhibited improved growth and carcass characteristics with a higher average daily live weight gain, lower feed-to-gain ratio, and higher carcass lean meat rate than CH pigs. Like CH pigs, BC F4 pigs produced superior meat-quality characteristics, showing ideal pH and meat-color values, high intramuscular fat content and water-holding capacity, and acceptable musclefiber parameters. C18:1, C16:0, C18:0, and C18:2 were the main fatty acids in M. longissimus lumborum in the two breeds, and a remarkably high polyunsaturated/saturated fatty acid ratio of ~0.39 was observed in the BC F4 pigs. Conclusion: The BC F4 pigs exhibit a uniform black coat pattern and acceptable total production performance. Objective: This work was to determine coat inheritance and evaluate production performance for crossbred pigs from Berkshire×Chenghua (BC) compared with Chinese indigenous Chenghua (CH) pigs.Methods: The coat color phenotypes were recorded for more than 16,000 pigs, and the genotypes of melanocortin 1 receptor (MCIR) gene were identified by sequencing. The reproductive performance of 927 crossbred BC F4 gilts and 320 purebred CH gilts was recorded. Sixty pigs of each breed were randomly selected at approximately 60 days of age to determine growth performance during fattening period, which lasted for 150 days for BC pigs and 240 days for CH pigs. At the end of the fattening period, 30 pigs of each breed were slaughtered to determine carcass composition and meat quality.Results: The coat color of BC pigs exhibits a “dominant black” hereditary pattern, and all piglets derived from boars or sows genotyped E^D1E^D1 homozygous for MC1R gene showed a uniform black coat phenotype. The BC F4 gilts displayed a good reproductive performance, showing a higher litter and tear size and were heavier at farrowing litter and at weaning litter than the CH gilts, but they reached puberty later than the CH gilts. BC F4 pigs exhibited improved growth and carcass characteristics with a higher average daily live weight gain, lower feed-to-gain ratio, and higher carcass lean meat rate than CH pigs. Like CH pigs, BC F4 pigs produced superior meat-quality characteristics, showing ideal pH and meat-color values, high intramuscular fat content and water-holding capacity, and acceptable musclefiber parameters. C18:1, C16:0, C18:0, and C18:2 were the main fatty acids in M. longissimus lumborum in the two breeds, and a remarkably high polyunsaturated/saturated fatty acid ratio of ~0.39 was observed in the BC F4 pigs.Conclusion: The BC F4 pigs exhibit a uniform black coat pattern and acceptable total production performance.