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酸碱中和滴定的突变范围一定是4.3~9.7吗?
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作者 张强 张典俊 《理科考试研究》 2024年第21期55-57,共3页
酸碱中和滴定的突变范围是酸碱中和滴定曲线的重要参数,可用于指导选择指示剂并辅助判断滴定终点,从酸碱中和滴定的几种常见类型出发,诠释了突变范围的计算方法和影响因素,以期对教师的教学提供一定的启发和借鉴.
关键词 酸碱中和滴定 突变范围 计算方法 影响因素
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填料粒径对经编格栅界面作用特性影响试验研究 被引量:1
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作者 李超 陈志伟 +3 位作者 周勇 高逸成 魏军扬 郑澄锋 《河南科学》 2016年第4期537-541,共5页
加筋材料与填料间的界面抗剪摩擦强度特性指标在有关加筋土工程中非常关键,对加筋土工程的安全和稳定影响较大.分别选择粉土,砂土,碎石3种填料对应工程常用的细中粗3种不同粒径工程填料与经编土工格栅分别进行室内拉拔试验来研究其界面... 加筋材料与填料间的界面抗剪摩擦强度特性指标在有关加筋土工程中非常关键,对加筋土工程的安全和稳定影响较大.分别选择粉土,砂土,碎石3种填料对应工程常用的细中粗3种不同粒径工程填料与经编土工格栅分别进行室内拉拔试验来研究其界面作用特性.得到了抗剪摩擦强度与法向应力的关系,填料粒径对突变范围影响,颗粒粒径对拉拔试验峰值的影响,并对相关工程设计施工监测给出一定指导建议. 展开更多
关键词 经编土工格栅 填料粒径 拉拔试验 突变范围 指导建议
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Systemic treatment in EGFR-ALK NSCLC patients:second line therapy and beyond
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作者 Niki Karachaliou Rafael Rosell 《Cancer Biology & Medicine》 SCIE CAS CSCD 2014年第3期173-181,共9页
Lung cancer is the most frequently diagnosed cancer and a leading cause of cancer mortality worldwide, with adenocarcinoma being the most common histological subtype. Deeper understanding of the pathobiology of non-sm... Lung cancer is the most frequently diagnosed cancer and a leading cause of cancer mortality worldwide, with adenocarcinoma being the most common histological subtype. Deeper understanding of the pathobiology of non-small cell lung cancer(NSCLC) has led to the development of small molecules that target genetic mutations known to play critical roles in progression to metastatic disease and to influence response to targeted therapies. The principle goal of precision medicine is to define those patient populations most likely to respond to targeted therapies. However, the cancer genome landscape is composed of relatively few "mountains" [representing the most commonly mutated genes like KRAS, epidermal growth factor(EGFR), and anaplastic lymphoma kinase(ALK)] and a vast number of "hills"(representing low frequency but potentially actionable mutations). Low-frequency lesions that affect a druggable gene product allow a relatively small population of cancer patients for targeted therapy to be selected. 展开更多
关键词 Lung cancer epidermal growth factor(EGFR) anaplastic lymphoma kinase fusions(ALK fusions) tyrosine kinase inhibitors(TKIs) TKI resistance
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