利用“四联四级”促进英语“教—学—评”一体化的实践

英语课程标准要求教师以发展学生核心素养为导向,推动实施单元整体教学。教师可通过“四联(指立德树人、核心素养、大单元整体教学、英语学习活动观)四级(指学、思、用、创)”促进英语“教—学—评”一体化的实施,实施英语大单元整体教学,开展“学、思、用、创”的层次性和进阶性教学活动,以达到发展学生的英语核心素养的目的。

四级医联体模式下湖北省松滋市农村老人健康状况和护理需求

目的了解湖北省松滋市农村老人的健康状况和护理需求。方法采用一般资料调查问卷、健康状况调查问卷(SF-36)和护理需求问卷对湖北省松滋市10个乡镇753名农村老人进行健康状况和护理需求调查并分析其影响因素。结果农村老人慢性病发病率为89.71%。SF-36总得分为(55.49±19.16)分,处于较低水平。排名前5的护理需求是健康咨询热线电话、健康档案、紧急救护服务、定期健康检查和安全用药指导。结论农村老人健康状况较差,应集中力量将上级医疗机构卫生资源下沉到基层,为农村老人提供针对性的优质护理服务,实现健康老龄化。

液相色谱三重四级杆质谱联用法同时测定豆芽中2,4-滴和6-苄基腺嘌呤

建立一种超声提取-液相色谱三重四级杆联用法（LC-MS/MS）同时测定豆芽中2,4-滴、6-苄基腺嘌呤2种植物生长调节剂的方法。酸化甲醇作为提取溶剂,涡旋2 min,超声波提取10 min,酸化甲醇定容;反相色谱柱分离,电喷雾离子化（ESI＋/-）和多离子反应监测（MRM）方式定量测定;加标回收试验2,4-滴添加浓度分别为5,10,20μg/kg,6-苄基腺嘌呤添加浓度为5,10,20μg/kg,平均回收率为85.0%-105.3%,相对标准偏差（RSD）1.0%-3.2%;2,4-滴,6-苄基腺嘌呤检出限分别为1.0、2.0μg/kg。方法快捷、简便、样品前处理时间少,适合食品监管中大批量样品快速测定使用。

新型CQ微带交叉耦合滤波器的设计与研究

提出了一种新型CQ微带交叉耦合带通滤波器结构的设计方法,并实现了工作于Ku波段的新型CQ交叉耦合滤波器。为进一步改善滤波器带外特性,通过对其中某些谐振器加入调谐枝节来实现对阻带第三个传输零点的灵活控制,可满足通信系统的应用。仿真与实验证实该滤波器带外的第三个传输零点可控,滤波器具有良好的选择性,相对带宽5.7%,具有良好的窄带效果;实测结果表明,第三个传输零点处的抑制度可达40 dBc,具有很好的阻带特性。

Rapid analysis and identification for the alkaloids from Ranunculus japonicus by UPLC /Q-TOF-MS

To establish a rapid and effective method for analysis and identification of the alkaloids from Ranunculus japoni- cus Thunb by ultra-performance liquid chromatogaraphy with quadruple-time-of-flight mass spectrometry （UPLC/Q-TOF- MS） and discuss their fragmentation regularity, the UPLC/Q-TOF-MS was used to identify the alkaloids from Ranunculus japonicus Thunb by their MS data, tandem characteristic fragment ions and standards. In the end, 12 alkaloids were identi- fied from Ranunculus japonicus for the first time, and their fragmentation regularity was discussed. Thus, a rapid and effec- tive analysis and identification method for the alkaloids from Ranunculus japonicus by UPLC/Q-TOF-MS is established.

Signal-Pressure Curves of Cascaded Four-Wave Mixing in Gas-Filled Capillary by fs Pulses

The theoretical framework for the cascaded four waves mixing (CFWM) in gas-filled capillary by fs pulses is constructed. Based on the theoretical framework, the signal-pressure curves (SPC) of the CFWM in gas-filled capillary by fs pulses are calculated. With a comparison between the theoretical and experimental SPC we have discussed the influence of the walk-off and Phase modulation on the SPC. At the same time, we have discussed the possible origin of the first three peaks of the SPC.