Subjects: Library Science，Information Science >> Information Science submitted time 2023-04-01 Cooperative journals: 《图书情报工作》
Abstract： [Purpose/significance] Through empirical research, this paper reveals the behavioral process and influencing factors of mental health information search of postgraduate students under academic pressure, and provides support for exploring the mental health status of postgraduate students and postgraduate training management. [Method/process] This study adopted semi-structured interview to collect data and grounded theory to conduct exploratory research on mental health information searching behavior under academic pressure. [Result/conclusion] It is found that under the academic pressure, the mental health information searching behavior process of postgraduate students mainly includes four stages: initiation, execution,acquisition and evaluation. The motivation of mental health information search mainly includes external drive and internal drive. Problem-solving information is the main content of mental health information search for master students. The factors that influence the mental health information searching behavior of postgraduate students include personal factors, objective conditions, information factors and confidentiality factors. Among them, information factor is the main factor that affects their mental health information search.
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中添加八角和杜仲叶提取物对断奶仔猪生长性能、血清酶活性及肝脏肿瘤坏死因子-α（TNF-α）分布和表达的影响。采用单因子试验设计，选择健康的“杜×长×大”断奶仔猪48头，随机分为4个组，每组3个重复，每个重复4头猪。对照组饲喂基础饲粮，试验组在基础饲粮的基础上分别添加八角提取物（500 mg/kg）、杜仲叶提取物（250 mg/kg）和金霉素（50 mg/kg）。预试期7 d，正试期42 d。结果表明：与对照组相比，饲粮中添加八角提取物、杜仲叶提取物和金霉素显著提高了断奶仔猪平均日增重（P<0.05），饲粮中添加八角和杜仲叶提取物显著降低了血清谷丙转氨酶、碱性磷酸酶活性和肝脏TNF-α mRNA相对表达量（P<0.05）。TNF-α免疫阳性结果主要见于肝脏的肝小叶间及肝血窦。由此可见，在饲粮中添加八角、杜仲叶提取物可提高断奶仔猪生长性能，并具有抵抗肝脏炎症反应及氧化应激的能力。
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