Effect of Different Cooking Methods on the Composition of Intramuscular Fatty Acids of Hyla Rabbit

Xue, Shan,Xiao, Xia,He, Zhifei,Li, Hongjun Korean Society for Food Science of Animal Resource 2016 한국축산식품학회지 Vol.36 No.2

The influence of three cooking methods (stewing, microwaving and Aluminium (Al) foil-baking) was evaluated on the content of intramuscular lipid and the composition of intramuscular fatty acids of Hyla rabbit. The percentage of intramuscular lipid in cooked-longissimus dorsi (LD) (dry weight %) were in the order mentioned below: microwaving > foil-baking > stewing. All treated samples showed decrease in the proportion of polyunsaturated fatty acids (PUFA) and monounsaturated fatty acids (MUFA), whilst increase in the proportion of saturated (SFA) and n-6/n-3 value during processing. All of the cooked samples had the n-6/n-3 ratio within the recommended range (5-10). By the analysis of partial least squares regression (PLSR), the microwaving treatment was better to keep the stability of unsaturated fatty acids (UFA), whilst the long-time Al foil-baking did the most serious damage to UFA, especially the PUFA. In addition, the heating method showed greater influence on the samples than the processing time. The shorter processing time was better to retain the intramuscular PUFA of Hyla rabbit, especially the LC-PUFAs (C20-22). Considering all the factors, microwaving showed the superiority in reserving the composition of intramuscular fatty acids of Hyla rabbit.

Effect of Growth on Fatty Acid Composition of Total Intramuscular Lipid and Phospholipids in Ira Rabbits

Xue, Shan,He, Zhifei,Lu, Jingzhi,Tao, Xiaoqi,Zheng, Li,Xie, Yuejie,Xiao, Xia,Peng, Rong,Li, Hongjun Korean Society for Food Science of Animal Resource 2015 한국축산식품학회지 Vol.35 No.1

The changes in fatty acid composition of total intramuscular lipid and phospholipids were investigated in the longissimus dorsi, left-hind leg muscle, and abdominal muscle of male Ira rabbits. Changes were monitored at 35, 45, 60, 75, and 90 d. Analysis using gas chromatography identified 21 types of fatty acids. Results showed that the intramuscular lipid increased and the intramuscular phospholipids (total intramuscular lipid %) decreased in all muscles with increasing age (p<0.05). An abundant amount of unsaturated fatty acids, especially polyunsaturated fatty acids, was distributed in male Ira rabbits at different ages and muscles. Palmitic acid (C16:0), stearic acid (C18:0), oleic acid (C18:1), linoleic acid (C18:2), and arachidonic acid (C20:4) were the major fatty acids, which account to the dynamic changes of the n-6/n-3 value in Ira rabbit meat.

Synthesis and characterizations of graphene–copper nanocomposites and their antifriction application

Xueshan Li,Guangwen Chu,Wei Wu,Yibo Zhao,Jianfeng Chen,Haikui Zou 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.4

In this work, a facile one-pot reduction method was used to prepare graphene–copper nanocomposites using graphite oxide and copper sulfate. The nanocomposites were characterized by transmission electron microscope, X-ray diffraction, Raman spectrum, thermal gravimetric analysis, UV–vis analysis and Fourier transform infrared spectrum. It was found that the as-synthesized graphene sheets have few layers and less defects with oxygen functional group on it. The copper nanoparticles with an average diameter of 20 nm were uniformly deposited on the graphene sheets. The aggregation of the copper nanoparticles was effectively prevented. The nanocomposites can evenly disperse in base oil. The antifriction performance of the base oil added with GNS–Cu was firstly investigated. It was found that the GNS–Cu nanocomposites as additive in proper ratio showed better antifriction properties with an improvement of the load-carrying capacity by 50%.

Generalized Chen’s Conjecture for Biharmonic Maps on Foliations

Xueshan Fu,정승달 경북대학교 자연과학대학 수학과 2023 Kyungpook mathematical journal Vol.63 No.4

In this paper, we prove the generalized Chen’s conjecture for (F, F')-biharmonic maps, such maps are critical points of the transversal bienergy functional.

Dynamic Equivalent Modeling of Motors Based on Improved Hierarchical Clustering Algorithm

Xueshan Lin,Hongbin Wu,Bin Ye,Bin Xu,Weiqing Tao 대한전기학회 2019 Journal of Electrical Engineering & Technology Vol.14 No.3

As the most important part of the power system load, the dynamic characteristics of motors are very important for power system simulation. The calculation is very large if all motors are modeled respectively. In order to reduce the amount of calculations, a dynamic equivalent modeling method of motors based on the improved hierarchical clustering algorithm is proposed in this paper. The two state parameters, the load rate and the product of inertia time constant and rotor resistance, are taken as clustering indexes. The improved hierarchical clustering algorithm is used to cluster dynamically the motors. And with the pseudo t 2 statistics, it can obtain the best clustering results. Then it establishes the dynamic multi-machine equivalent model after each motor group equivalent. With the example system, the simulation results show that the proposed dynamic equivalent method can keep the dynamic characteristics of models and improve the equivalent accuracy.

GEOMETRIC CHARACTERIZATIONS OF CANAL SURFACES IN MINKOWSKI 3-SPACE I

Fu, Xueshan,Jung, Seoung Dal,Qian, Jinhua,Su, Mengfei Korean Mathematical Society 2019 대한수학회보 Vol.56 No.4

The canal surfaces foliated by pseudo spheres $\mathbb{S}_1^2$ along a space curve in Minkowski 3-space are studied. The geometric properties of such surfaces are shown by classifying the linear Weingarten canal surfaces, the developable, minimal and umbilical canal surfaces are discussed at the same time.

Experimental Study on Fire Resistance Performance of Concrete-Filled Steel Plate Composite Walls

Ting Zhou,Xueshan Liu,Hongbo Liu,Yixuan Li,Pengfei Zhang,Huazhou Chen,Zhi-Hua Chen 한국강구조학회 2023 International Journal of Steel Structures Vol.23 No.2

Concrete-filled steel plate composite walls are increasingly used in high-rise buildings; their mechanical properties at room temperature have produced fruitful results. However, research on their mechanical properties in fire and at high temperatures is scarce. Moreover, published studies on the fire resistance of concrete-filled steel plate composite walls have not considered the impact of fire protection measures. Based on previous fire resistance research, a fire resistance test was designed in this study for four walls under the combined action of axial compression and a single-sided fire under the ISO-834 standard heating curve. Apart from that, the existing fire protections have the disadvantages of too thick, easy falling off and cracking or difficult to install. In order to eliminate the disadvantages of existing fire prevention measures, new composite fireproof structure using a rock wool board and a thin fire-retardant coating is proposed. The effects of no fireproof structures, autoclaved lightweight concrete plate fireproof structures, thick-coated fire-retardant structures, and new composite fireproof structures on the fire resistance of concrete-filled steel plate composite walls were studied experimentally. The results show that the fire resistance of the four test specimens meets the 3 h fire resistance limit of the primary load-bearing component in the specification. Based on the experimental results, reasonable fire protection methods are suggested for concrete-filled steel plate composite walls in actual projects, and an experimental basis is provided for further numerical simulation.

Analyze Requirements for PAIS with Best Practice

Juntao GAO,Xueshan Wang,Yongan WANG 보안공학연구지원센터 2016 International Journal of Hybrid Information Techno Vol.9 No.2

Traditional requirements analysis is focused on capture functions of the system that are being built from scratch. As the size and complexity of process-aware information system continues to grow, the use of COTS (Commercial off-the-shelf) software packages is being viewed as a solution. Use of COTS packages accelerates the implementation process to some extent, however, it puts enterprises into a dilemma: whether to adapt as-is business processes or to customize software packages. In order to help the enterprises get out of the dilemma, a methodology is proposed to automatically elicit software requirement using best practice as domain knowledge. The methodology involves three phases: business modeling, gap detecting and gap bridging. Firstly, VPML is employed to describe as-is business process, Secondly, semantics computing technology is employed to analyze the gap between enterprise needs and COTS software capacity. At last, Goal Reasoning Technology is employed to encourage enterprise users and software vendors take participate in decision making process together.

Medical Image Segmentation Based on Morphology Algorithm and FCM Algorithm

Shigang Wang,Zhinan Rong,Xueshan Gao 보안공학연구지원센터 2016 International Journal of Signal Processing, Image Vol.9 No.10

Fuzzy c-means algorithm is an unsupervised clustering algorithm, its clustering process can reduce the human intervention, and it is suitable for processing medical images of uncertainty and ambiguity. When simply using FCM algorithm in brain image segmentation will leads to the condition of low accuracy. On the basis of FCM algorithm, this paper proposes a new method which combines FCM algorithm and morphology algorithm. The result of simulation shows that this method can accurately and efficiently segment the brain image. The new algorithm is an effective method for image segmentation.

Optimal Configuration of Flexible Interconnection Devices for Transferring Photovoltaic Power in Active Distribution Network

Wu Hongbin,He Ye,Lin Xueshan,Bi Rui,Hua Yuting,Sun Ming,Xu Bin 대한전기학회 2023 Journal of Electrical Engineering & Technology Vol.18 No.2

With the increasing penetration of distributed photovoltaic in distribution network, it is more difficult to control active distribution network (ADN). A flexible interconnection device (FID) can realize regional interconnection of the ADN through transferring power. However, the influence of installation position and number of FIDs on the ADN varies, it is necessary to analyze its operational planning model. In this study, first, a photovoltaic power and load forecasting model is established, followed by reduction of the typical scenarios. Second, the ADN operational planning model is established according to the line load balance index to analyze the coordination and determine the power transfer value of the FID in different installation positions and numbers for the ADN. Third, the net income index of the distribution network in the entire life cycle is established to analyze the economy of the ADN and determine the optimal FID installation location and quantity. Finally, numerous simulations and comparisons are carried out on the actual example system, and the results show that the FID can effectively transfer the active power, strengthen the ADN power supply level, and solve the problem of power supply imbalance caused by distributed photovoltaic access.