Zhongguo youzhi, 2023 为提高茶皂苷的提取率，扩大茶皂苷的应用范围，以脱脂油茶籽饼为原料，采用超声-微波辅助法提取茶皂苷。以油茶皂苷提取率为考察指标，在单因素试验的基础上，采用Plackett-Burman试验设计筛选出具有显著影响的试验因素，再通过响应面法对茶皂苷提取工艺进行优化。另外，将超声-微波辅助法提取茶皂苷的工艺与超声辅助法和微波辅助法提取工艺进行了对比。结果表明：超声-微波辅助法提取茶皂苷的最佳工艺条件为乙醇体积分数59%、料液比1∶ 12、提取液pH 7、超声功率475 W、超声时间4 min、超声工作2 ...
司喜艳，王香玉，皇甫新燕，王琦，赵仁勇SI Xiyan, WANG Xiangyu, HUANGFU Xinyan, WANG Qi, ZHAO Renyong
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Optimization of Solanum lyratum Crude Polysaccharide Extraction Process Using Response Surface Methodology and Analysis ofIts In Vitro Antioxidant Activity [PDF]
, 2023 To optimize the extraction process of polysaccharide form Solanum lyratum and investigate its in vitro antioxidative activity. In this study, response surface methodology was employed to optimize the ultrasonic-assisted extraction process of ...
Lijuan DENG, Minghao HUANG, Taiqi HUANG
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Research progress on preparation and physicochemical properties of coal-based graphene quantum dots [PDF]
, 2023 Graphene quantum dots (GQDs) have attracted great research interest due to their remarkable quantum confinement and edge effects. In addition to exhibiting stable photoluminescence, it also has many advantages such as low cytotoxicity, good solubility ...
Jidun SHA +5 more
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Design and experimental research of pipeline stress measurement system based on alternating current field [PDF]
, 2023 Ferromagnetic pipelines are prone to stress distortion during service, which will likely cause destructive defects, such as fatigue damage and cracks, and even major safety accidents in severe cases.
Anquan WANG +7 more
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Novel Antifouling Technology Research: Progress and Prospects [PDF]
, 2016 海洋生物污损问题给海洋事业的发展带来了许多危害,传统防污技术已日渐不能满足要求,研发新型环境友好型防污剂迫在眉睫.用仿生学原理和化学生态学的方法发展新型无毒仿生防污材料和技术是解决海洋污损问题的新思路.本文综述了污损生物防除技术的发展,并重点介绍了基于化学生态学发现的仿生抗生物附着先导化合物和防污材料 ...
chxia@yic.ac.cn +6 more
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Analysis on flow characteristics and aerodynamic-force-induced vibration of supersonic rocket-sled
Xibei Gongye Daxue Xuebao, 2022 目前, 火箭橇试验是飞行器空气动力学重要试验手段, 然而强烈的地面与轨道干扰会影响试验的精度, 甚至导致试验失败。采用尺度自适应SAS方法和基于铺层算法的动网格技术对不同马赫数下的超声速火箭橇滑行过程进行数值模拟, 探究了超声速火箭橇的气动力致振机理。采用了数值风洞模拟方法对超声速火箭橇无限空间绕流和仅包含地面的橇体绕流进行仿真, 分析了不同环境条件下的激波特征。结果表明: 超声速火箭橇的头激波传播至轨道和地面时会发生激波反射, 反射激波的存在会导致超声速火箭橇产生升力, 并带来阻力的略微增加 ...
YU Yuanyuan +5 more
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Zhongguo youzhi, 2023 为解决富硒米糠蛋白提取率低、提取时间长及提取后功能特性下降等问题，以脱脂富硒米糠粉为原料，通过单因素试验和正交试验对超声-微波协同提取富硒米糠蛋白的工艺进行优化，通过与超声辅助法、微波辅助法和碱提法比较，探究该提取方法对富硒米糠蛋白的提取效果、抗氧化活性以及提取后米糠颗粒表面形貌变化的影响。结果表明，超声-微波协同提取富硒米糠蛋白的最佳工艺条件为超声功率600 W、微波功率500 W、提取时间20 min、料液比1∶ 40，在此条件下富硒米糠蛋白的提取率为86.94%，与超声辅助法、微波辅助法 ...
贺远锐1，谢勇1，陈朝军1，刘雄1,2，王群3HE Yuanrui1, XIE Yong1, CHEN Zhaojun1, LIU Xiong1,2, WANG Qun3
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A Method Study on Determination of Sediment Content in Water Samples Based on Self-made Differential Pressure Device [PDF]
, 2022 [Objective] The method for quickly and accurately measuring sediment concentrations in water samples in the field based on differential pressure was studied.
Chen Lin +5 more
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Effects of Different Modification Methods on the Functional Properties and Structure of Chlorella Protein [PDF]
The study employed three methods—odium tripolyphosphate method, neutral protease method, and ultrasonic treatment to modify the Chlorella protein in this paper.
DING Hao +5 more
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Zhongguo youzhi, 2023 为进一步提高辣木籽蛋白资源的开发利用，采用盐提法提取辣木籽蛋白，再采用超声波辅助酶法制备辣木籽ACE抑制肽。以水解度和ACE抑制率为评价指标，通过单因素实验探究超声波功率、超声酶解时间、超声酶解温度及料液比对制备ACE抑制肽的影响,采用响应面法对制备工艺条件进行优化。结果表明：超声波辅助酶法制备辣木籽ACE抑制肽的最佳酶解工艺条件为碱性蛋白酶添加量5.5 mg/mL、pH 9、超声波功率500 W、超声酶解时间1.7 h、超声酶解温度55 ℃、料液比1∶ 45，在此条件下制备的酶解物ACE抑制率达到78.
钟玉旺，安姝璇，王雪峰，范江平，黄艾祥，田洋 ZHONG Yuwang, AN Shuxuan, WANG Xuefeng , FAN Jiangping, HUANG Aixiang, TIAN Yang
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