双分支时空关键点特征增强人体姿态迁移网络

为了充分利用动作序列之间的先验信息以提升姿态迁移模型的性能,提出了一个基于时空图卷积的双流关键点特征增强模块,即双分支时空图姿态迁移模块(dual-branch spatial temporal graph pose transfer block,DSTG-PTB)。DSTG-PTB从高帧率和低帧率2个不同的分支进行特征提取。输入的关键点数据首先经过位置嵌入和速度嵌入,然后构建人体骨骼关键点的时空图,并利用时空图卷积网络挖掘动作关键点之间的关联特征,最后将2个分支的特征进行融合并嵌入现有的姿态迁移模型中。对4个序列动作数据集进行了全面的定性和定量实验分析,结果表明,所提DSTG-PTB可以有效提升姿态迁移网络的性能,生成更符合用户审美的序列图像。

火电厂脱硫废水高效软化处理试验研究

对某火电厂脱硫废水的高效软化预处理工艺研究。脱硫废水因水量不稳定、水质复杂、含盐量高等特点成为电厂废水处理过程中的难题。通过管式微滤软化装置对脱硫废水进行软化处理,去除废水中所含的Ca^(2+)、Mg^(2+)、F^(-)、SiO_(2)等,为后续蒸发浓缩提供保障。系统研究工艺过程中预处理的加药量,管式微滤膜的结垢与通量衰减的情况,絮凝剂PAC对沉淀效率的影响,加药反应停留时间等关键问题。研究提出高效的软化处理工艺,降低经济成本和节能降耗。

Evaluation of Antitumor,Immunomodulatory and Free Radical Scavenging Effects of A New Herbal Prescription Seaweed Complex Preparation

Seaweed Complex Preparation(SCP) is a clinical traditional Chinese medicine preparation which is composed of seven traditional Chinese herbs,and it has been used for treatment of lung cancer,liver cancer and digestive cancer.However,little information is available about the pharmacodynamic basis.The antitumor,immunomodulatory and free radical scavenging effects of SCP were evaluated in this study.Transplanted tumor in vivo method was used to determine the antitumor effect.The effects on splenocyte proliferation and phagocytosis of macrophages in tumor-bearing mice were measured by the MTT method and the phagocytizing cock red blood cell(CRBC) method respectively.The scavenging activities of SCP on DPPH and hydroxyl radicals in vitro were investigated.It was found that the medium-dose and high-dose of SCP could significantly inhibit the growth of transplanted hepatic tumor of murine hepatocarcinoma cell line H22,and promote proliferation of splenocytes and phagocytosis of macrophages.SCP possessed noticeable scavenging activities on DPPH and hydroxyl radicals.The antitumor effects of SCP might be achieved by improving immune system and scavenging free radicals,which is in accordance with the viewpoint of traditional Chinese medicine in promoting the body resistance and eliminating pathogenic factors for cancer treatment.

Construction of a Metagenomic DNA Library of Sponge Symbionts and Screening of Antibacterial Metabolites

为了学习简历，活跃代谢物由导出海绵的未耕作的共生者生产了，海绵 Gelliodes gracilis 的共生者的一个 metagenomic DNA 图书馆被构造。DNA 的平均尺寸在图书馆插入是 20kb。这个图书馆用纸圆盘 assaying 为抗菌素活动被屏蔽。二克隆对小球菌 tetragenus 显示了抗菌剂活动。这二克隆的代谢物通过 HPLC 被分析。结果证明他们的代谢物与主人 E 的那些相当不同。包含向量 pHZ132 的关口 i DH5 α和主人。这研究可以介绍一条新途径给探索简历海绵共生者的活跃代谢物。

Extraction and purification of deguelin from Derris trifoliata Lour root

This article deals with extraction and purification of deguelin,which is a main rotenoid occurred in the root of Derris trifoliate Lour.Deguelin has gained much attention of scientists because of its potential ability to inhibit cancer cell proliferation.The dried root powder was extracted with ethanol by ultrasonic-assisted extraction for 30 min,and then filtrated and concentrated to give pasty concentrate.The concentrate was loaded onto silica gel column chromatography subsequently;and the chemical was eluted using a binary solvent mixture of petroleum ether(60-90ºC)-ethyl acetate(4:1,v/v).All tentative identification was carried out by high performance liquid chromatography(HPLC).Most crystal of deguelin was obtained after the fractions mainly containing deguelin were pooled and placed in the dark at 4ºC for three days.With recrystallization from carbon tetrachloride for three times,the purity of deguelin crystal was 99.15%and the yield was 0.55%of the dried weight of D.trifoliate Lour root.