Subjects: Biology >> Botany submitted time 2022-12-01 Cooperative journals: 《广西植物》
Abstract：
In order to determine the optimal harvesting period and the application value of each part of Pueraria lobata var. thomsonii and to explore the correlation between the main nutrients and the isoflavones, Tengxian County P. lobata var. thomsonii was used as the material,the contents of isoflavones in different parts , the contents of main nutrients and isoflavones in different growth periods were determined by test box method, enzyme gravimetric method, Soxhlet extraction method, high performance liquid chromatography and other physiological and biochemical techniques，and the relationship between the accumulation of various nutrients and isoflavones was analyzed to clarify the accumulation rule of main nutrients and isoflavonoids and their relationship in P. lobata var. thomsonii. The results were as follows: (1)At the mature stage, the content of genistein in different parts of P. lobata var. thomsonii was not significantly different, but the content of daidzein in leaves was significantly lower than that in middle vine, and the content of total isoflavones, puerarin and daidzein in roots and vines was significantly higher than that in leaves and roots, and the content of puerarin in roots and vines was more than 1.00%. (2)The accumulation of starch, polysaccharide, crude protein, soluble protein and soluble dietary fiber reached the maximum in November and December, the accumulation of insoluble dietary fiber reached the minimum in December, the accumulation of soluble dietary fiber was the largest in August and December, and the accumulation of total isoflavones and puerarin reached the maximum in August and September. (3)The correlation analysis results showed that the accumulation of isoflavones and puerarin was negatively correlated with the accumulation of starch and polysaccharide; The accumulation of isoflavones and puerarin was positively correlated with the accumulation of insoluble dietary fiber. Therefore, it can be concluded that the root head and vine of pueraria powder contain rich total isoflavones, puerarin, daidzein, which has good value for medicinal development. The best harvest time for medicinal using is from August to September, and the best harvest time for edible using are November and December. The accumulation of starch and polysaccharide of P. lobata var. thomsonii is positively correlated with the accumulation of isoflavones and puerarin, while the accumulation of insoluble dietary fiber is negatively correlated with the accumulation of isoflavones and puerarin.This study clarify the accumulation rule and correlation of the main nutrients and isoflavones in P. lobata var. thomsonii, and provides a reference for the comprehensive development and utilization of P. lobata var. thomsonii and the determination of the harvest time.
Subjects: Computer Science >> Integration Theory of Computer Science submitted time 2022-05-10 Cooperative journals: 《计算机应用研究》
Abstract： Action recognition(AR) is a hot research area in computer vision field, and has an extensive application prospect for security monitoring, autopilot, production safety etc. Firstly, this paper analysed the connotation and denotation of AR and put forward the technical challenges; Secondly, the paper analysed and compared the working principles of AR from three aspects: time feature extraction, efficient optimization and long-term feature capture; Thirdly, in order to select suitable AR models for different application scenarios, this paper compared the performance characterization of 43 benchmark AR methods in recent ten years based on UCF101, HMDB51, Something-Something and Kinetics400 data sets. Finally, this paper pointed out the future development direction of AR field, and the research results can provide theoretical reference and technical support for video feature extraction and visual content understanding.
Subjects: Energy Science >> Energy Science （General） submitted time 2017-05-15
Abstract：河盆地有无天然气一直是地学界研究的热点问题之一，而该问题的关键是有无气源岩的存在。为进一步评价因缺乏有效烃源岩而停顿多年的渭河盆地的油气地质前景，结合区域地质背景，通过二维地震反射特征、地热井伴生气及油气化探的CH4、CO2碳同位素数据和钻探成果综合分析，认为渭河盆地深部残留有晚古生代含煤地层：①二维地震反射剖面揭示，渭河盆地深部发育类似鄂尔多斯盆地石炭系—二叠系煤系地层特有的强反射特征（T9），对应于太原组9#、8#和山西组4#、3#主力煤层反射；②地热井伴生气及油气化探样品中δ13CH4在-24.5‰ ~ -40.2‰之间，属于煤型热解—裂解气，大多数样品δ13 Cco2＜-10‰，属有机成因气；③渭参3井揭示盆内存在上古生界二叠系石盒子组，推测下部存在山西组和太原组地层；④渭河盆地在晚古生代为大华北克拉通的一部分，沉积有煤系地层，三叠纪末期开始遭受一定的隆升剥蚀，至新生代渭河断陷盆地开始形成，盆地周缘发生大规模隆升剥蚀，而渭河盆地内这一时期接受了巨厚沉积，前新生代地层（上古生代煤系地层等）得以保存和深埋，即构造演化的差异造成了不同构造单元地层剥蚀和残留程度的差异。综合认为晚古生代煤系地层甚至更晚层位存在于渭河盆地的西安凹陷、固市凹陷和咸渭凸起的部分区域。渭河盆地晚古生代含煤地层可作为油气及氦气载体气的气源岩，为渭河盆地油气及富氦天然气勘探提供了物质基础，同时可为鄂尔多斯周缘断陷盆地群油气资源调查提供借鉴。
Peer Review Status:
Awaiting Review
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