百度选择安森美半导体公司图像传感器用于Apolo自主驾驶平台

正安森美半导体公司已经加入了百度的Apollo自主驾驶平台,通过这项合作,生态系统合作伙伴可以获得由这两家公司联合开发的即插即用兼容的图像解决方案。Apollo提供了一个开源的、可靠的软件和硬件系统,能使汽车系统设计人员高效地开发自主驾驶系统,图像感应是支持增强自主驾驶功能的Apollo平台的关键组件。安森美半导体的完全合格的基于先进的CMOS的3μm图像传感器产品为客户立即开始设计开发用于自主驾驶     

用切断气缸法提高内燃机车用16ЧH26／26型柴油机的经济性

发动机在空 工况下，通过停止供油和供气来切断１／２气。可提高工作气缸内的循环温度，降低１小时耗油量２０－３０％，改善发动机的经济性。介绍了供气切断机构的结构件及其作用，提供了该机构的进怕和排气液力杆的动作时间与油湿关系的数据以及在机油温度和空载工况下转速改变时发动机一些数值的变化情况。     

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智能运输系统(ITS)是当前解决交通问题的最佳途径之一,而动态交通信息的发布与预测是ITS的关键所在。然而由于在各种外部因素下,道路交通状态呈现出随机变化的特性使得动态交通信息的发布与预测成为一大难点。结合某城市的实际情况,本文建立了在定位误差、采样间隔、车辆类型、道路类型等因素影响下的行程车速估计模型,并用实测数据对模型进行精度验证。结合出租车车辆的特殊信息,改进了低采样频率浮动车技术的估计算法,建立了空车数据处理模型;针对城市复杂和相似路段问题,提出了基于距离、方向角、连通性、历史数据以及车流方向等约束条件下的地图匹配算法;针对低采样频率浮动车数据,提出了考虑交叉口影响下的行程车速估计算法,通过实测数据评估了算法的性能;最后,针对不同检测技术的特征,提出了数据融合算法。     

LC-MS determination and pharmacokinetic study of salidroside in rat plasma after oral administration of suspensions of t

A simple,rapid and sensitive liquid chromatography-mass spectrometry（LC-MS）method was developed for the determination of salidroside in rat plasma and study of its pharmacokinetics after oral administration of suspension of Erzhi Wan and Fructus Ligustri     

Simultaneous determination of 12, 13-dihydroxyeuparin and glycyrrhizic acid in Yanyanfang mixture by high performance liquid chromatography

A reversed phase high performance liquid chromatography （HPLC） method was established for the simultaneous determination of 12, 13-dihydroxyeuparin and glycyrrhizic acid in Yanyanfang mixture. A Grace Apollo Cl8 column （250 mm × 4.6 mm, 5 μm） was used as the stationary phase and the mobile phase was composed of acetonitrile and aqueous phosphoric acid （0.2%, v/v）. Gradient elution was carried out at the flow rate of 1.0 mL/min and the column temperature was 30 ℃. An ultraviolet （UV） detector was used with a selected wavelength of 240 nm. Calibration curves were linear within the concentration range of 4.6-45.75 μg/mL for 12, 13-dihydroxyeuparin （r〉0.9999） and 106.9-1068.9μg/mL for glycyrrhizic acid （r〉0.9999）, respectively. Recoveries were 102.18% for 12, 13-dihydroxyeuparin and 101.17% for glycyrrhizic acid. The method developed could be applied to the simultaneous determination of 12, 13- dihydroxyeuparin and glycyrrhizic acid in Yanyanfang mixture.     

高职交通安全与智能控制专业英语教材建设研究

主要分析现在高职交通安全与智能控制专业英语教材建设中存在的实际问题,结合本专业的人才培养方案和专业特色,对本专业英语教材提出了建设性建议,对于其他高职专业英语教材建设具有一定的指导和参考价值。     

Study on chromatographic fingerprint of sarcandra glabra （Thunb.） by microwave-assisted extraction coupled to HPLC/DAD

Microwave-assisted extraction (MAE) was used for extraction of effective components of sarcandra glabra (Thunb.), and then chromatographic fingerprint of sarcandra glabra (Thunb.) was studied by high performance liquid chromatography/diode array detector (HPLC/DAD). The conditions of MAE were optimized by an orthogonal experiment, and then the authentication and validation of the chromatographic fingerprint were conducted. Nine peaks were identified as common peaks in the fingerprint chromatograms, and isofraxidin was considered as a reference compound and quantified. Relative standard deviations of retention time and peak area of each component were less than 3% and 8%, respectively. Similarity and difference analysis were conducted by use of PCA and relation coefficient. Twenty batches of sarcandra glabra (Thunb.) samples from two different producing areas could be classified into two different groups in the PCA model. The results showed that MAE-HPLC/DAD method was simple, efficient and stable for the study of complex chromatographic fingerprint of sarcandra glabra (Thunb.), which could provide more reliable and precise information for quality evaluation.