Results 21 to 30 of about 52,467 (200)
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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Dizhen xuebao, 2019 为提高震害信息获取时效性，对基于我国国产高分遥感影像的建筑物震害信息提取方法进行深入研究，本文以2017年5月11日新疆塔县MS5.5地震为例，利用该地震前后极灾区高分遥感影像，利用结合纹理和形态学特征的方法进行了建筑物震害信息提取，通过变化检测分析获取了极灾区建筑物震害信息，并与基于像元级和基于目标级的信息提取结果进行对比，采用震后无人机影像目视解译结果对本文结果进行了精度验证。结果表明：通过缩减研究区范围可大力提高数据提取精度和速度；运用灰度共生矩阵、二值化、数学形态学等方法对影像进行迭代运算 ...
Jinxiang Li +4 more
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Study on Polysaccharide Extraction and Protein Removal from Ziziphus jujuba Mill. cv Junzao(骏枣的多糖提取及其蛋白脱除研究) [PDF]
Shipin kexue jishu xuebao, 2020 Taking Hetian Junzao as raw material, response surface methodology (RSM) was used to optimize the extraction conditions of jujube polysaccharide. Three methods of removing protein of polysaccharide were compared to determine the final method for protein ...
CAO Zehong(曹泽虹) +3 more
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Zhongguo youzhi, 2023 为了高值化综合开发裂殖壶藻，以未破壁的裂殖壶藻粉为原料，优化三相分离（TPP）法联产提取裂殖壶藻中油脂、蛋白质和多糖的工艺。结果表明，采用TPP法联产提取裂殖壶藻中油脂、蛋白质和多糖的最佳条件为悬浮液中硫酸铵质量浓度5 g/15 mL，叔丁醇与悬浮液体积比3∶ 1，液料比120∶ 1。在上述优化的条件下，TPP法提取裂殖壶藻油脂的最佳提取温度和提取时间分别为90 ℃和3 h，提取蛋白质和多糖的最佳提取温度和提取时间分别为60 ℃和0.5 h。此外，评估不同策略下TPP法联产提取裂殖壶藻油脂 ...
魏登枭1,车丹丹1,陈必链1,2,何勇锦1,2,3，周志华1 WEI Dengxiao1, CHE Dandan1, CHEN Bilian1,2, HE Yongjin1,2,3, ZHOU Zhihua1
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Study on Extraction and Thermal Stability of Conjugated Linoleic Acid from Sheep Waist Fat(羊腰部脂肪中共轭亚油酸提取及热稳定性) [PDF]
Shipin kexue jishu xuebao, 2013 The sheep waist was chosen as raw material for grease extraction in this paper. The effect of different solvents,and temperature on extraction of grease and conjugated linoleic acid-CLA- was studied.
HOU Jian-jun(侯建军) +4 more
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Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract The stoichiometric imbalance caused by nitrogen (N) deposition typically exacerbates phosphorus (P) limitation in plants. However, it remains unclear whether this effect extends to soil microbes, particularly those in the rhizosphere.
Jipeng Wang +5 more
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Strangers on the ladder of the party‐state: Women in teaching in Nationalist Taiwan, 1940s–1980s
Gender &History, EarlyView.Abstract As the ruling party of a party‐state in China and Taiwan, the Nationalist Party (Kuomintang/Guomindang) built a close relationship with the teaching profession. Many teachers joined the party and there was a well‐trodden pathway from teaching into local representative politics and civil service.
Joseph Lawson
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亚洲临床医学杂志, 2020 目的： 优选白花蛇舌草中多糖的最佳提取方法。 方法： 比较微波提取、超声提取、碱水提取、酶法提取、加热回流提取白花蛇舌草，以多糖的提取率为指标，筛选出较优提取工艺，并测定对 Hep G2、A549 两种肿瘤细胞的抑制率。 结果： 白花蛇舌草的最佳提取工艺为微波辅助提取法，其白花蛇舌草多糖的提取率在 11.25~13.58%，其对 Hep G2、A549 两种肿瘤细胞的抑制率均大于 16%。 结论： 优选的白花蛇舌草微波提取法工艺稳定可行、操作简便，所得的白花蛇舌草多糖有一定的抑瘤效果。
敬骞 冯, 姜言 李, 建刚 汪
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One‐Sidedness and the Inferior Function in Coriolanus and Timon of Athens
Journal of Analytical Psychology, EarlyView.Abstract For both Jung and Shakespeare, one‐sidedness is the fundamental tragic trait. Jung proposed that as an individual develops, they inevitably associate their identity with certain modes of perception and interaction, and that this leads to psychological polarization.
Sofie Qwarnström
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Zhongguo youzhi, 2022 蛋黄卵磷脂样品经微波消解，采用电感耦合等离子体质谱法测定样品中15种金属元素含量，对检测条件进行了优化，并进行了方法学考察。结果表明，在射频功率1.55 kW、载气（高纯氩气）流速 1.03 L/min、等离子气体流速15.0 L/min、蠕动泵转速 0.1 r/s、采样深度 10 mm、重复次数 3 次条件下，通过在线加入内标钪(Sc)、锗(Ge)、铟(In)、铼(Re)元素可校正基体效应和干扰，测定汞元素时，加入金元素可降低测定误差；该方法的15 种金属元素线性关系良好，线性相关系数（R）均大于0 ...
陈秋玲，祝芷琦，李咏华，王小妹，梁北梅，温恺嘉，许一靖，曾还雄，林元亨，唐顺之 CHEN Qiuling, ZHU Zhiqi, LI Yonghua,WANG Xiaomei,LIANG Beimei, WEN Kaijia,XU Yijing,ZENG Huanxiong,LIN Yuanheng,TANG Shunzhi
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