Subjects: Library Science，Information Science >> Library Science submitted time 2023-07-26 Cooperative journals: 《图书情报工作》
Abstract： [Purpose/significance] This paper aims to construct a PROV provenance model and user credibility evaluation index for information dissemination process, quantify the credibility of information, and enrich and improve the method of credibility evaluation of socialized Q&A community platform.[Method/process] The paper analyzed the credibility of the data origination concept assessment information from the perspective of the information dissemination process, traced and recorded the source and dissemination of the information by establishing the relevant PROV data provenance model. The process, combined with the user credibility scores involved in the information dissemination process, was used to calculate the quantitative results of the credibility of the information.[Result/conclusion] Through the evaluation of the credibility of information, the information credibility evaluation method is further improved, which provides a new idea for optimizing the quality of community information.
Subjects: Psychology >> Social Psychology submitted time 2023-03-28 Cooperative journals: 《心理科学进展》
Abstract： From the perspective of social media group polarization, how should enterprises with strong stereotypes deal with the damage causing by weak stereotyped consumers? Previous studies have focused on enterprises harm to consumers and their responses, less attention has been paid to how enterprises responses after being harmed by consumers. The difference lies in the shifting of the roles of harmer and victim, as well as the shifting of the contrast between strength and weakness. In view of this, based on the theory of group polarization, this paper conducts research on the core issue of “how to deal with damaged brands to obtain/eliminate polarized support/opposition of onlooker consumer groups in the social media environment”, and explore the double valence coping strategies.According to the logical framework of group polarization theory: information persuasion strategy-group emotional resonance-group polarization results, we carry out three studies in general. (1) From the perspective of damaged brands, how should enterprises with strong stereotypes express their sad expression in order to gain polarized support from onlooker consumer groups? The conclusion is expected to be that enterprises adopted anthropomorphism (vs. non-anthropomorphic) and expressed group sympathy play a continuous mediating role in the context of social media, when infringing consumers cause brand harm. (2) From the perspective of onlooker consumer groups, how can enterprises with strong stereotypes unite with onlooker consumer groups to gain support from their group polarization? Expected conclusion is that the enterprise appealing for victim transfer (vs. no victim transfer) will make onlookers consumer groups have group polarization support, and the group-hate resonance of onlookers consumer groups to infringing consumers plays a mediating role in the social media environment, when infringing consumers cause damage to the brand. (3) From the perspective of infringing consumers, how to eliminate the polarization of onlooker consumer groups caused by enterprises punishing infringing consumers? Expected conclusion is that in the context of social media, victim significance (vs.no victim significance) will weaken or even eliminate the group polarization of onlooker consumer groups to brands, and the group anger resonance of onlookers to brands plays a significant mediating role. Overall, the theoretical contributions of this study are mainly reflected in the following three aspects First, from the perspective of research questions, this study puts forward a new research direction on how enterprises should deal with consumers' brand damage in the social media environment, filling in the theoretical system of brand crisis response; Second, from a theoretical perspective, this study proposes group polarization as an effective test basis and explanation mechanism support for damaged brand coping strategies, which expands the theoretical construction and explanation of brand crisis response. Third, from the perspective of individual infringing consumers, based on the theory of group polarization, in this study different appeal methods are proposed from the perspectives of victims, victims and onlookers, which will enrich the specific strategies for brand crisis response. In addition, based on the conclusions expected of this study, the management implications can be summarized as the following points. First, from the perspective of enterprises, this study provides valuable guidance on how damaged brands with strong stereotypes can "obtain/eliminate" the polarized "support/opposition" of onlooker consumer groups in the social media environment. Second, from the viewpoint of industry, conclusions of this study have reference significance for how the strong party should respond after being hurt by the weak party in the fields of government, education, and medical care . Finally, from a social perspective, the expected conclusions in this study can alleviate or eliminate the huge risks and adverse consequences brought by the negative polarization of groups in the social media environment to the whole society.
Subjects: Psychology >> Social Psychology submitted time 2023-03-28 Cooperative journals: 《心理科学进展》
Abstract： HPA axis (Hypothalamic - Pituitary - Adrenal, HPA) dysfunction determines the formation or deterioration of stress-related emotional disorders. As a special stress-related disease, premenstrual syndrome (PMS) appears before menstruation and disappears after menstruation. This stable and explosive phenomenon reflects acute stress. On the other hand, the premenstrual discomfort symptoms are considered chronic stress, which may last about 30 years. In order to provide a more comprehensive understanding of the pathological mechanisms of PMS, we relied on two types of the activity patterns of HPA axis, namely activity patterns at the baseline level and activity patterns after experimental manipulations on stress levels. The current meta-analysis study included 32 studies (total sample size N = 1280) from 1990 to 2021. We investigated the difference of cortisol levels in luteal phase and follicular phase between PMS women and controls. In addition, we investigated the moderating roles of the cortisol measurement method, cortisol measurement time, PMS/PMDD sample size, and diagnostic type. Because of age-related changes in female hormone secretion and regional differences in menstruation attitude, we further investigated the moderating roles of age and area. 牋We found that the cortisol of PMS individuals in the luteal phase was significantly lower than that of the controls at the baseline level. This effect was moderated by the time of cortisol measurement. At follicular stage, there was no significant difference in cortisol content between PMS women and controls. Similarly, in the experimental studies manipulating stress levels, the cortisol content of PMS women in the luteal phase was significantly lower than that of the controls, but the two groups did not differ in the cortisol content of the follicular phase. The moderating roles of cortisol measurement method, PMS/PMDD sample size, diagnostic type, age and area were not significant. 牋The findings suggested that the persistent changes of the HPA axis and blunted reactivity of HPA axis to pressure might be pathological mechanisms of PMS. The inactivation of the HPA axis at the baseline reflected the lasting change of the neurobiological system due to long-term ineffective activation, while the inactivation of the HPA axis in the experimental studies directly showed blunted reaction to subsequent stressors. Blunted baseline cortisol response may be a risk factor to the development of PMS. Thus, future studies need to further clarify the role of blunted baseline cortisol response on the occurrence of PMS using a longitudinal design. 牋In addition, the results of the follicular phase were unstable in both the baseline and experimental studies, influenced by depression history and trauma experience. 牋The study responds to the controversy of the existing research findings on the topic and provides a deeper understanding for the pathological mechanisms of PMS. Based on the findings of this study, the roles of the time effect of cortisol measurement and stress regulation strategies should be considered in future research.
submitted time 2023-03-25 Cooperative journals: 《心理科学进展》
Abstract： From the perspective of social media group polarization, how should enterprises with strong stereotypes deal with the damage causing by weak stereotyped consumers? Previous studies have focused on enterprises harm to consumers and their responses, less attention has been paid to how enterprises responses after being harmed by consumers. The difference lies in the shifting of the roles of harmer and victim, as well as the shifting of the contrast between strength and weakness. In view of this, based on the theory of group polarization, this paper conducts research on the core issue of “how to deal with damaged brands to obtain/eliminate polarized support/opposition of onlooker consumer groups in the social media environment”, and explore the double valence coping strategies.According to the logical framework of group polarization theory: information persuasion strategy-group emotional resonance-group polarization results, we carry out three studies in general. (1) From the perspective of damaged brands, how should enterprises with strong stereotypes express their sad expression in order to gain polarized support from onlooker consumer groups? The conclusion is expected to be that enterprises adopted anthropomorphism (vs. non-anthropomorphic) and expressed group sympathy play a continuous mediating role in the context of social media, when infringing consumers cause brand harm. (2) From the perspective of onlooker consumer groups, how can enterprises with strong stereotypes unite with onlooker consumer groups to gain support from their group polarization? Expected conclusion is that the enterprise appealing for victim transfer (vs. no victim transfer) will make onlookers consumer groups have group polarization support, and the group-hate resonance of onlookers consumer groups to infringing consumers plays a mediating role in the social media environment, when infringing consumers cause damage to the brand. (3) From the perspective of infringing consumers, how to eliminate the polarization of onlooker consumer groups caused by enterprises punishing infringing consumers? Expected conclusion is that in the context of social media, victim significance (vs.no victim significance) will weaken or even eliminate the group polarization of onlooker consumer groups to brands, and the group anger resonance of onlookers to brands plays a significant mediating role. Overall, the theoretical contributions of this study are mainly reflected in the following three aspects First, from the perspective of research questions, this study puts forward a new research direction on how enterprises should deal with consumers' brand damage in the social media environment, filling in the theoretical system of brand crisis response; Second, from a theoretical perspective, this study proposes group polarization as an effective test basis and explanation mechanism support for damaged brand coping strategies, which expands the theoretical construction and explanation of brand crisis response. Third, from the perspective of individual infringing consumers, based on the theory of group polarization, in this study different appeal methods are proposed from the perspectives of victims, victims and onlookers, which will enrich the specific strategies for brand crisis response. In addition, based on the conclusions expected of this study, the management implications can be summarized as the following points. First, from the perspective of enterprises, this study provides valuable guidance on how damaged brands with strong stereotypes can "obtain/eliminate" the polarized "support/opposition" of onlooker consumer groups in the social media environment. Second, from the viewpoint of industry, conclusions of this study have reference significance for how the strong party should respond after being hurt by the weak party in the fields of government, education, and medical care . Finally, from a social perspective, the expected conclusions in this study can alleviate or eliminate the huge risks and adverse consequences brought by the negative polarization of groups in the social media environment to the whole society.
submitted time 2023-03-25 Cooperative journals: 《心理科学进展》
Abstract： HPA axis (Hypothalamic - Pituitary - Adrenal, HPA) dysfunction determines the formation or deterioration of stress-related emotional disorders. As a special stress-related disease, premenstrual syndrome (PMS) appears before menstruation and disappears after menstruation. This stable and explosive phenomenon reflects acute stress. On the other hand, the premenstrual discomfort symptoms are considered chronic stress, which may last about 30 years. In order to provide a more comprehensive understanding of the pathological mechanisms of PMS, we relied on two types of the activity patterns of HPA axis, namely activity patterns at the baseline level and activity patterns after experimental manipulations on stress levels. The current meta-analysis study included 32 studies (total sample size N = 1280) from 1990 to 2021. We investigated the difference of cortisol levels in luteal phase and follicular phase between PMS women and controls. In addition, we investigated the moderating roles of the cortisol measurement method, cortisol measurement time, PMS/PMDD sample size, and diagnostic type. Because of age-related changes in female hormone secretion and regional differences in menstruation attitude, we further investigated the moderating roles of age and area. 牋We found that the cortisol of PMS individuals in the luteal phase was significantly lower than that of the controls at the baseline level. This effect was moderated by the time of cortisol measurement. At follicular stage, there was no significant difference in cortisol content between PMS women and controls. Similarly, in the experimental studies manipulating stress levels, the cortisol content of PMS women in the luteal phase was significantly lower than that of the controls, but the two groups did not differ in the cortisol content of the follicular phase. The moderating roles of cortisol measurement method, PMS/PMDD sample size, diagnostic type, age and area were not significant. 牋The findings suggested that the persistent changes of the HPA axis and blunted reactivity of HPA axis to pressure might be pathological mechanisms of PMS. The inactivation of the HPA axis at the baseline reflected the lasting change of the neurobiological system due to long-term ineffective activation, while the inactivation of the HPA axis in the experimental studies directly showed blunted reaction to subsequent stressors. Blunted baseline cortisol response may be a risk factor to the development of PMS. Thus, future studies need to further clarify the role of blunted baseline cortisol response on the occurrence of PMS using a longitudinal design. 牋In addition, the results of the follicular phase were unstable in both the baseline and experimental studies, influenced by depression history and trauma experience. 牋The study responds to the controversy of the existing research findings on the topic and provides a deeper understanding for the pathological mechanisms of PMS. Based on the findings of this study, the roles of the time effect of cortisol measurement and stress regulation strategies should be considered in future research.
Subjects: Psychology >> Personality Psychology submitted time 2023-01-06
Abstract：
HPA axis (Hypothalamic - Pituitary - Adrenal, HPA) dysfunction determines the formation or deterioration of stress-related emotional disorders. In order to provide a more comprehensive understanding of the pathological mechanisms of PMS, we relied on two types of the activity patterns of HPA axis, namely activity patterns at the baseline level and activity patterns after experimental manipulations on stress levels. The current meta-analysis study included 32 studies (total sample size N = 1280) from 1990 to 2021. We found that the cortisol of PMS individuals in the luteal phase was significantly lower than that of the controls at the baseline level. This effect was moderated by the time of cortisol measurement. At follicular stage, there was no significant difference in cortisol content between PMS women and controls. Similarly, in the experimental studies manipulating stress levels, the cortisol content of PMS women in the luteal phase was significantly lower than that of the controls, but the two groups did not differ in the cortisol content of the follicular phase. The findings suggested that the persistent changes of the HPA axis and blunted reactivity of HPA axis to pressure might be pathological mechanisms of PMS. Future research should focus on stress regulation strategies to improve PMS.
Peer Review Status:
Awaiting Review
Subjects: Biology >> Genetics submitted time 2022-12-22
Li, Meimei
Zhang, Ting
Liu, Yunteng
Li, Yupei
Fong, J Jonathan
Yu, Yangfei
Wang, Jichao
Shi, Haitao
Lin, Liu
Abstract：
The Green Sea Turtle (Chelonia mydas) is an umbrella species in the South China Sea, a Chinese national first-level protected wild animal, and the only sea turtle that nests in Chinese waters. The largest C. mydas nesting ground is distributed in the Xisha (Paracel) Islands, which plays a vital role in the survival of sea turtle populations in China. This study reveals the genetic diversity and population structure of the breeding population of C. mydas on the Xisha Islands using three mitochondrial markers. A total of 15 D-loop, 5 Cytochrome b (Cyt b), and 7 Cytochrome C Oxidase subunit I (COI) haplotypes were identified in the breeding population of C. mydas on the Xisha Islands. D-loop haplotypes are distributed in clades III, IV, and VIII of the C. mydas mitochondrial control region. Clade IV is first clade to be discovered in this C. mydas population, and five D-loop haplotypes were also newly identified. The haplotype and nucleotide diversity were calculated for each marker: D-loop (0.415 haplotype diversity, 0.00204 nucleotide diversity), Cyt b (0.140, 0.00038) and COI (0.308, 0.00083). The average genetic distance (p) of each molecular marker was less than 0.01. Neutral detection and nucleotide mismatch analysis suggested that the breeding population of C. mydas in the Xisha Islands did not experience a population expansion event in recent history. It is recommended that a sea turtle protection area be established in the Xisha Islands area to strengthen protection and effectively protect the uniqueness and sustainability of the breeding population of C. mydas in the South China Sea.
Peer Review Status:Awaiting Review
Subjects: Management Science >> Enterprise Management submitted time 2022-12-01
Abstract：
From the perspective of social media group polarization and facing the harm brought by consumers with the stereotype of the weak, how should the enterprises with stereotype of the strong deal with it? According to the logical line of group polarization theory: information persuasion strategy - group emotional resonance - group polarization results, we conducted three studies: from the perspective of the injured brand, how do enterprises express that they are a victim so that the injured brand will win the group polarization support of bystanders? From the perspective of bystanders, how should enterprises cooperate with bystanders to gain their group polarization support? And from the perspective of infringing party, how can enterprises eliminate the group polarization opposition from bystanders caused by punishing infringing party?
Peer Review Status:Awaiting Review
Subjects: Biology >> Botany submitted time 2022-11-24 Cooperative journals: 《广西植物》
Abstract：
To explore the influence of topographic factors on the diversity and spatial distribution of plant species around FAST (Five-hundred-meter Aperture Spherical radio Telescope), three typical plant communities (tree layer, shrub layer, vine layer) in the Karst peak-cluster depression around FAST were selected as the study objects, and ANOVA and Canonical Correspondence Analysis (CCA) were used to investigate the species diversity and spatial distribution of plant communities under different topographic factors (altitude, slope, aspect, and gradient). The results were as follows: (1) The α-diversity index of plant communities around FAST shows a trend of shrub layer > tree layer > vine layer, and the α-diversity index of plants in the tree layer and vine layer gradually increases with altitude (P<0.05), while the topographic factor has no significant effect on the α-diversity of plants in shrub layer. (2) The spatial distribution of plant community species around FAST was most influenced by the altitude, followed by the slope. (P<0.05) (3) The β-diversity indices of the plant communities around FAST show a trend of vine layer > shrub layer > tree layer along the altitude and slope. The Jaccard similarity index above 70% is extremely dissimilar and moderately dissimilar at altitude and slope gradients. The Jaccard similarity index of the three plant communities tended to increase with altitude and then decrease along the slope. In summary, species differ in their habitat selection, and altitude and slope are key factors affecting the spatial distribution of plant communities in the Karst depressions around FAST. Species diversity can better reflect the differences in plant communities in terms of species composition. Species diversity is not only influenced by topographic factors, but also related to biotic and abiotic factors, such as temperature, precipitation, human activities, and functional plant traits. Therefore, corresponding environmental factors need to be added in future studies to further investigate the intrinsic mechanisms of plant species diversity and species spatial distribution at the regional scale and to strengthen the ecological protection of the surrounding area, improve the forest composition, and provide a good natural environment around FAST and in the Karst peak-cluster depression.
Subjects: Nursing >> Nursing submitted time 2022-09-06
Abstract：
Traditional Chinese medicine shi fu has been widely used in clinical practice, which is a common method for external treatment of Chinese medicine. Through literature review, this paper summarized the definition, historical origin and mechanism of TCM shi fu, and summarized the specific application of TCM shi fu from two aspects of cold and hot shi fu, providing reference for clinical research.
Subjects: Biology >> Zoology submitted time 2018-12-25 Cooperative journals: 《动物营养学报》
Abstract：本试验旨在研究饲粮不同油脂比例对冬毛期雄性银黑狐生长性能、血清生化指标及肠道形态结构的影响。试验选取48只157日龄、平均体重为（5 450±140） g的健康雄性银黑狐，随机分成4组，每组12个重复，每个重复1只。4种试验饲粮中油脂比例不同，但添加量均为14%，其中Ⅰ组试验饲粮中油脂由12.00%的鱼油和2.00%的豆油组成，Ⅱ组试验饲粮中油脂由9.38%的玉米油和4.62%的豆油，Ⅲ组试验饲粮中油脂由12.00%的玉米油和2.00%的豆油组成，Ⅳ组试验饲粮中油脂由1.50%的鱼油和12.50%的玉米油。预试期7 d，正试期40 d。结果表明：1）饲粮不同油脂比例对银黑狐的体长有显著影响（P0.05）。Ⅱ组体长显著高于Ⅳ组（P0.05）。2）饲粮不同油脂比例对血清甘油三酯（TG）和低密度脂蛋白胆固醇（LDL-C）含量有显著或极显著影响(P0.05）。Ⅱ组血清TG显著低于Ⅰ、Ⅲ和Ⅳ组（P0.05）。Ⅱ组血清GLOB含量显著高于Ⅲ和Ⅳ组（P0.05）。4）饲粮不同油脂比例对血清补体4（C4)含量有显著影响（P0.05）。Ⅲ组血清C4含量显著低于Ⅰ、Ⅱ和Ⅳ组(P0.05）。5）饲粮不同油脂比例极显著影响了肠道绒毛高度、隐窝深度和绒毛高度/隐窝深度（P0.05）；Ⅱ组绒毛高度/隐窝深度极显著高于Ⅰ组（P0.05）。综合本试验结果可知，饲粮油脂来源为9.38%玉米油和4.62%豆油时，降低了血清中TG和LDL-C的含量，升高了血清中GLOB的含量，改善了肠道形态结构，从而促进了冬毛期雄性银黑狐体长的增加。
Subjects: Biology >> Zoology submitted time 2018-12-25 Cooperative journals: 《动物营养学报》
Abstract：本试验旨在研究饲粮中添加半胱胺盐酸盐（CSH）对冬毛期雄性水貂毛皮品质、血清生化和激素指标及肝脏相关基因表达的影响。选择160日龄体重[（2.13±0.10） kg]相近的健康冬毛期雄性水貂56只，随机分为7组，每组8个重复，每个重复1只。各组分别饲喂在基础饲粮中添加0（Ⅰ组，对照组）、60（Ⅱ组）、90（Ⅲ组）、120（Ⅳ组）、60（Ⅴ组）、90（Ⅵ组）、120 mg/kg（Ⅶ组）CSH的试验饲粮；其中，Ⅱ、Ⅲ、Ⅳ组添加方式为连续添加，Ⅴ、Ⅵ、Ⅶ组添加方式为间隔添加（连续添加１周，间隔1周）。预试期7 d，正试期51 d。结果表明：1）Ⅵ和Ⅶ组水貂皮长、针毛长度和绒毛长度显著或极显著高于对照组（P<0.05或P<0.01）。2）Ⅱ、Ⅲ、Ⅴ、Ⅵ、Ⅶ组血清尿素氮含量显著或极显著低于对照组（P<0.05或P<0.01），Ⅱ、Ⅲ、Ⅴ、Ⅵ、Ⅶ组血清甘油三酯含量显著或极显著低于对照组（P<0.05或P<0.01）。3）Ⅵ组血清生长激素含量显著高于对照组和Ⅳ组（P<0.05），Ⅱ、Ⅲ、Ⅵ组血清生长抑素含量显著低于对照组和Ⅳ组（P<0.05），Ⅱ、Ⅲ、Ⅳ、Ⅴ、Ⅵ、Ⅶ组血清生长激素受体含量显著或极显著高于对照组（P<0.05或P<0.01），Ⅱ、Ⅲ、Ⅴ、Ⅵ、Ⅶ组血清胰岛素样生长因子-I含量显著高于Ⅳ组（P<0.05）。4）Ⅵ组肝脏胰岛素样生长因子-I基因表达量显著高于对照组和Ⅱ、Ⅳ、Ⅴ组（P<0.05），Ⅵ组肝脏胰岛素样生长因子-I受体基因表达量显著高于Ⅱ、Ⅳ、Ⅴ组（P<0.05），Ⅱ、Ⅲ、Ⅳ、Ⅴ、Ⅵ、Ⅶ组肝脏生长激素受体基因表达量显著或极显著高于对照组（P<0.05或P<0.01）。由此可见，在本试验条件下，冬毛期雄性水貂饲粮中CSH的适宜添加水平为90 mg/kg，适宜添加方式为间隔添加。
Subjects: Biology >> Zoology submitted time 2018-12-25 Cooperative journals: 《动物营养学报》
Abstract：本试验旨在研究饲粮添加维生素E（VE）和硒（Se）对育成期水貂生长性能、营养物质消化率及血清生化指标的影响。选取60只70日龄、平均体重为（1 030.64±85.50） g的健康雄性短毛黑水貂，随机分成4组，每组15个重复，每个重复1只，分别饲喂基础饲粮（对照组）、基础饲粮＋200 mg/kg VE（以DL-α-生育酚乙酸酯为VE源，含量为50%）（VE组）、基础饲粮＋0.2 mg/kg Se（以甘氨酸纳米硒为Se源，含量为1%）（Se组），基础饲粮＋200 mg/kg VE＋0.2 mg/kg Se（VE+Se组）。试验从2017年7月14日开始，至2017年9月14日结束。结果显示：1）与对照组相比，VE组和VE+Se组水貂平均日增重显著增加而料重比显著下降（P0.05）。3）VE+Se组水貂血清超氧化物歧化酶（SOD）和谷胱甘肽过氧化物酶（GSH-Px）活性显著或极显著高于对照组（P0.05）；与对照组相比，饲粮单独添加VE或同时添加VE和Se极显著降低水貂血清活性氧（ROS）水平（P0.05）。与对照组相比，饲粮同时添加VE和Se显著提高水貂血清白介素-2（IL-2）水平（P<0.05）。综合考虑得出，本试验条件下，饲粮中同时添加200 mg/kg VE和0.2 mg/kg Se可促进育成期水貂生长，提高脂肪消化率，同时增强机体抗氧化能力及免疫力。
Subjects: Biology >> Zoology submitted time 2018-12-24 Cooperative journals: 《动物营养学报》
Abstract：饲粮能量直接影响毛皮动物生产性能，如何真实评价动物对饲料能量的需要、利用及能量转化效率是能量代谢研究的重点。毛皮动物维持能量受动物的基础代谢、环境温度、饲养管理、品种、营养物质代谢热增耗等因素的影响。本文综述了毛皮动物能量代谢的研究进展，为毛皮动物精细化饲养和饲料的精准配制提供充足的理论依据。
Subjects: Biology >> Zoology submitted time 2018-12-24 Cooperative journals: 《动物营养学报》
Abstract：本试验旨在研究低蛋白质饲粮中苏氨酸（Thr）水平对越冬前期梅花鹿仔鹿生长性能、营养物质消化率的影响。选择20只健康、6月龄雄性梅花鹿，随机分为4组，每组5只。4组梅花鹿限量饲喂4种不同饲粮，通过补充过瘤胃赖氨酸、过瘤胃蛋氨酸和过瘤胃苏氨酸，各组饲粮赖氨酸（Lys）、蛋氨酸(Met)水平相同，均分别0.63%、0.18%，Thr水平分别为0.55%（Ⅰ组）、0.47%（Ⅱ组）、0.53%（Ⅲ组）、0.58%（Ⅳ组）。此外，Ⅰ组（对照组）饲粮为蛋白质水平为15.15%的高蛋白质饲粮，试验组（Ⅱ组、Ⅲ组和Ⅳ组）饲粮为蛋白质水平为13.46%的低蛋白质饲粮。预试期为15 d，正试期45 d。结果显示：1）对照组和Ⅱ组末重显著高于Ⅳ组（P＜0.05）；Ⅳ组平均日增重（ADG）极显著低于其他组（P＜0.01）；Ⅳ组料重比（F/G）极显著高于其他组（P＜0.01），Ⅱ组极显著低于对照组和Ⅲ组（P＜0.01）。2）Ⅳ组粗脂肪消化率极显著低于Ⅱ组（P<0.01）、显著低于Ⅲ组（P<0.05）；对照组中性洗涤纤维（NDF）消化率显著低于Ⅱ组（P<0.05）；对照组能量消化率极显著低于Ⅱ组（P<0.01）；Ⅱ组钙消化率极显著高于其他组（P<0.01），Ⅳ组极显著低于对照组和Ⅲ组（P<0.01）；Ⅱ组磷消化率极显著高于Ⅳ组（P<0.01）、显著高于对照组和Ⅲ组（P<0.05）。3）Ⅱ组蛋氨酸和苏氨酸消化率极显著高于对照组和Ⅳ组（P<0.01）、显著高于Ⅲ组（P<0.05）；Ⅱ组天冬氨酸消化率显著高于其他组（P<0.05）；对照组丝氨酸消化率极显著低于其他组（P<0.01）；对照组谷氨酸消化率极显著高于Ⅱ组和Ⅲ组（P<0.01）；对照组酪氨酸消化率显著低于Ⅱ组（P<0.05）；对照组脯氨酸消化率极显著低于Ⅱ组（P<0.01）、显著低于Ⅲ组（P<0.05）。由此得出，在饲粮Lys、Met水平相同的条件下，饲喂蛋白质水平为13.46%、Thr水平为0.47%的低蛋白质饲粮的梅花鹿仔鹿的生长性能、营养物质消化率与饲喂蛋白质水平为15.15%、Thr水平为0.55%的高蛋白质饲粮的梅花鹿仔鹿相当。
Subjects: Biology >> Zoology submitted time 2018-12-24 Cooperative journals: 《动物营养学报》
Abstract：为了研究发酵白酒糟对断奶仔猪生长性能、消化代谢和氮排放的影响，选用21日龄断奶的去势杜×长×大公猪24头，随机分为4组，每组6个重复，每个重复1头猪。对照组饲喂基础饲粮，试验组分别用2%、4%和6%发酵白酒糟等比例替代基础饲粮。分别于平均体重为10和25 kg左右时，试验猪转入代谢笼内进行消化代谢试验。每个试验期为1周，前4 d为适应期，后3 d为粪尿收集期。记录仔猪的日采食量，并于每次试验开始和结束时称取空腹体重。采用全收粪法测定断奶仔猪对常规营养成分和氨基酸的表观消化率以及氮排放量。结果表明：与对照组相比，在10 kg断奶仔猪试验中，2%发酵白酒糟组的表观消化能和尿氮量显著降低（P0.05）；4%和6%发酵白酒糟组的总能、赖氨酸、蛋氨酸和脯氨酸的表观消化率、表观代谢能和表观消化能均显著降低（P0.05），平均日增重显著增加（P<0.05）；6%发酵白酒糟组的蛋氨酸表观消化率显著下降（P<0.05）；2%、4%和6%发酵白酒糟组的摄入氮量、吸收氮量、沉积氮量、粗蛋白质和总能的表观消化率、氮表观消化率、表观代谢能和消化能均显著降低（P<0.05），粪氮量显著增加（P<0.05）。由上可见，饲粮添加2%发酵白酒糟不影响断奶仔猪对干物质的表观消化率，可增加其生长性能；长期高剂量添加发酵白酒糟在一定程度上降低了断奶仔猪对常规营养成分的消化代谢。
Subjects: Biology >> Zoology submitted time 2018-12-24 Cooperative journals: 《动物营养学报》
Abstract：本试验旨在探讨饲粮添加亮氨酸和谷氨酸对肥育猪肌肉脂肪酸组成和脂质代谢相关基因表达的影响。选取平均体重为77 kg左右的三元杂交肥育猪60头，随机分为5个组，每组12头，公、母各占1/2。对照组饲喂基础饲粮，试验组分别在基础饲粮中添加2.05% L-丙氨酸（等氮对照组）、1.0%亮氨酸+1.37% L-丙氨酸（亮氨酸组）、1.0%谷氨酸+1.44% L-丙氨酸（谷氨酸组）、1.0%亮氨酸+1.0%谷氨酸（亮氨酸+谷氨酸组）。饲喂60 d后屠宰采集肌肉样品，检测其中脂肪酸含量以及脂质代谢相关基因mRNA的相对表达量。结果表明：与对照组相比，在背最长肌中，亮氨酸组C18:2n-6和C20:1含量显著增加（P<0.05），C18:0含量显著降低（P<0.05），谷氨酸组C14:0和C16:0含量显著降低（P<0.05），C17:0和C18:2n-6含量显著增加（P<0.05）；在股二头肌中，亮氨酸组C16:0含量显著降低（P<0.05），谷氨酸组C18:2n-6含量显著增加（P<0.05）。与对照组相比，亮氨酸组背最长肌中脂肪酸转运蛋白1（FATP-1）mRNA的相对表达量显著上调（P<0.05），亮氨酸+谷氨酸组背最长肌和股二头肌中脂肪酸转运蛋白4（FATP-4）mRNA的相对表达量表达显著下调（P<0.05）。与等氮对照组相比，谷氨酸组和亮氨酸+谷氨酸组背最长肌中脂蛋白脂酶（LPL）mRNA的相对表达量显著上调（P<0.05）。上述结果提示，饲粮添加1.00%亮氨酸或1.00%谷氨酸可调控肥育猪肌肉中脂肪酸组成及脂质代谢相关基因的表达。
Subjects: Computer Science >> Integration Theory of Computer Science submitted time 2018-08-13 Cooperative journals: 《计算机应用研究》
Abstract： Intelligent Internet of Vehicle (IIOV) gathers relative traffic information by all kinds of on-ground sensors. The gathered data often include irregular spatial and temporal resolution, so losing data is a common problem of IIOV. In order to solve this problem, this paper proposed a kind of new approach of losing data evaluation for IIOV which was named tensor low-rank approximation(VBPCA) based on the extracting the common traffic pattern and comparing the function estimation & tensor decomposition. The approach can get the traffic patterns under the cases of losing data and the expression of low-rank. In the experiments to test the approach, it select about 1000 road segments to do the analysis. The results show that this approach has good performance on evaluation accuracy, the bias of the data set, so it is very useful for the application of intelligent internet of vehicle.
Subjects: Computer Science >> Integration Theory of Computer Science submitted time 2018-04-19 Cooperative journals: 《计算机应用研究》
Abstract： Many malware families such as botnet utilize domain generation algorithms(DGAs) to evade detection at present. The mainstream detection algorithms based on artificial rules and machine learning have some limitations due to the fact that DGAs generate domain characters timely and rapidly. The former is somewhat blind to new DGA variants. The latter suffers from the lack of evolving training data. In order to solve these problems, domain encoder and decoder on account of the method of Ascall encoding was defined in this paper and they were combined with the concept of generative adversarial network(GAN) to construct domain character generator. Then the generator was used to predict and generate DGA variants. Experiment results show that the DGA variants generated by this method can act as real DGA samples when these variants are utilized to train and estimate classifiers . This verifies the validity of the generated data and they can be effectively utilized to train and estimate DGA domain detector.
Subjects: Biology >> Zoology submitted time 2017-10-23 Cooperative journals: 《动物营养学报》
Abstract：本试验旨在研究饲粮玉米油与棕榈酸配比对冬毛期蓝狐生产性能、营养物质消化率及氮代谢的影响。选取120日龄体重相近的健康雄性蓝狐60只，随机分成6组，每组10个重复，每个重复1只蓝狐。各组分别饲喂玉米油与棕榈酸配比为0:12（Ⅰ组）、3:9（Ⅱ组）、5:7（Ⅲ组）、7:5（Ⅳ组）、9:3（Ⅴ组）和12:0（Ⅵ组）的试验饲粮。预试期7 d，正试期67 d。结果表明：1）饲粮玉米油与棕榈酸配比对冬毛期蓝狐平均日增重有极显著影响（P0.05）。随着饲粮玉米油添加比例的升高，平均日增重逐渐升高。饲粮玉米油与棕榈酸配比对冬毛期蓝狐体长、针毛长度和绒毛长度均无显著影响（P>0.05），Ⅵ组鲜皮长显著高于Ⅰ组（P0.05）。3）饲粮玉米油与棕榈酸配比对冬毛期蓝狐食入氮、粪氮、尿氮、氮沉积、净蛋白利用率和蛋白质生物学价值均无显著影响（P>0.05）。然而，氮沉积随饲粮中玉米油添加比例的升高呈上升趋势，Ⅰ组最低，Ⅵ组最高；净蛋白质利用率和蛋白质生物学价值均以Ⅴ组最高。综合各指标，从保证蓝狐生产性能和营养物质消化率考虑，冬毛期蓝狐干饲粮中玉米油与棕榈酸的适宜比例应当维持在9:3（即亚油酸含量为3.76%）。
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