Results 121 to 130 of about 13,463 (225)

Thermodynamic model for predicting mineral phase distribution in cement-stabilized kaolinite [PDF]

open access: yes
In this study, a new method based on a chemical thermodynamic model is proposed to quantitatively predict the phase distribution in cemented soil. Commercial kaolinite with simple phase composition is selected, and a series of cemented kaolinite samples ...
GE Jinyu1, 2 , XU Fei1 , HAN Xun1, HAN Xuesong1, QIAN Wenxun1, LI Huaisen1
core   +1 more source

Study on sugarcane bagasse pretreatment and high thermotolerable yeast strain [PDF]

open access: yes, 2010
纤维素燃料酒精技术的开发与利用一直是国内外研究的热点,而如何降低纤维素燃料酒精的生产成本越来越成为其产业化发展的关键。 本论文对纤维素预处理方法及耐高温酵母的选育进行了研究。提出酸、碱法预处理甘蔗渣,即甘蔗渣充分吸水后挤出多余水分,再分别浸泡酸、碱液20min,对多余的酸、碱回收,其用量降低90%。采用酸法对甘蔗渣进行预处理最佳处理条件为:1%的H2SO4,105℃处理40min。对预处理后的蔗渣进一步酶解,还原糖得率为16.3%。采用碱法对甘蔗渣进行预处理最佳处理条件为:2%的NaOH,105 ...
丛一博
core  

Screening of A β-Galactosidase-producing Pediococcus acidilactici Strain from Cheese and Its Characteristics for Galactooligosaccharides Synthesis [PDF]

open access: yes
This study aimed to provide a new lactic acid bacteria (LAB) enzyme source for synthesizing probiotic galactooligosaccharides (GOS). It screened β-galactosidase producing strains with high transglycosidase activity from traditional cheese in Xinjiang ...
Bo GUAN   +6 more
core   +1 more source

基于结构先验与多尺度残差聚合的大面积破损图像修复 [PDF]

open access: bronze
WEI Yun   +5 more
openalex   +1 more source

Separation and identification of auraptene from grapefruit peel oil [PDF]

open access: yes, 2011
橙油素是广泛存在于柑橘类果实中的天然抗癌活性成分。选用SP70大孔吸附树脂分离纯化葡萄柚精油中的橙油素,该树脂对于橙油素的吸附容量和解吸率分别达到14.53 Mg/g和83.32%,并成功地从树脂床层的洗脱液中结晶分离出橙油素晶体。对所得晶体分别采用差示扫描量热仪(dSC)、紫外吸收光谱(uV)、红外吸收光谱(Ir)、电喷雾质谱(ESI-MS)进行定性分析,分析结果与橙油素标准品相符合。进一步采用高效液相色谱(HPlC)对所得晶体进行定量分析,结果表明所得晶体中橙油素的质量分数可达85 ...
吴大鹏   +5 more
core  

Expression of Polysialic Acid in Throat Cancer and the Significance to Throat Cancer Metastasis [PDF]

open access: yes, 2010
恶性肿瘤是一种严重威胁人类健康的疾病,近年有增多的趋势。喉癌(Carci-nomaoflarynx)是来源于喉粘膜上皮组织的恶性肿瘤,喉癌的数量约占所有肿瘤的1.0%-5.0%,在耳鼻喉肿瘤中仅次于鼻咽癌和鼻腔鼻窦癌居第三位,易发生脑转移,其发生与吸烟、酗酒、长期吸入有害物质和乳头状瘤病毒感染等因素有关,其5年存活率超过70.0%,10年存活率达到50.0%左右。近年来其发病率有逐渐上升的趋势,因此,研究喉癌的发病机制,以及寻找判断喉癌转移和喉癌患者预后的标识物一直是该领域的热点问题 ...
兰春燕
core  

深度密集卷积神经网络协同检测的多聚焦图像融合方法

open access: bronze, 2022
杨威 Yang Wei   +5 more
openalex   +2 more sources

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