摘要：Background:Total mesorectum excision(TME)is considered the standard surgical procedure for rectal-cancer *** TME(taTME)is a new procedure to treat low rectal *** published studies have proven that taTME can provide a better-quality resected specimen in low-rectal-cancer patients in comparison to the transabdominal procedure,yet long-term outcomes must be *** designed this non-inferiority trial(TaLaR trial)to compare short-term and long-term outcomes between taTME and laparoscopic TME(lapTME)for rectal ***:The TaLaR trial is a phase III open-labeled multicenter randomized-controlled *** who are diagnosed with rectal cancer with no more than T3N2 stage,and with the tumor location below the peritoneal reflection by magnetic resonance imaging scan,digital rectal examination,or colonoscopy,qualify for this *** calculating,a total of 1,114 patients(557 per group)will be randomly allocated to either the taTME or the lapTME *** endpoints are the 3-year disease-free survival(DFS)rate and the 5-year overall survival(OS)*** endpoints include specimen quality,perioperative results,pelvic and anal function,and quality of ***:The TaLaR trial is expected to clarify whether taTME can achieve comparable oncological outcomes,as well as improve specimen quality and recovery conditions in rectal-cancer patients compared with lapTME.

摘要：LRG型地铁钢轨打磨车设计最高运行速度为100 km/h。文章对该车的总体布局、主要性能参数、车体、动力系统、走行系统、牵引动力传动系统、电气控制系统、轨道打磨系统等设计进行系统阐述。应用实践表明,LRG型地铁钢轨打磨车3~15 km/h的低恒速和高速旋转砂轮设计,可有效消除钢轨轨头表面病害,满足线路钢轨打磨作业要求。

摘要：介绍了为高铁客运专线研制的国内首台160km/h交流传动重型轨道车的主要技术特点、总体布置及技术参数等。根据样车设计完成了相关型式试验项目。

摘要：针对现有音乐合成器不能兼顾体积小,灵活与多音色调节等问题,设计了一种新型低成本、易操作的便携式数控模拟电子音乐合成器。该合成器由音序器、压控振荡器、音频功率放大和录音,四个模块构成。其中,音序器使用定时器芯片NE555结合脉冲分配器CD4017输出音序;压控振荡器模块使用施密特触发器和运算放大器产生稳定的波形并对其进行转换;音频功率放大模块使用AB类音频功放芯片TDA2030对波形进行放大;录放音模块采用集成录放音芯片ISD1820实现对一定时长的音频录制与播放。实验结果表明,该合成器实现了16路音序的输出和锯齿波、矩形波、正弦波三种振荡波形的生成,音频功放输出功率最大可达2W,输出波形无明显失真,音量可调,录制音频时长可达20 s。

摘要：湘辣712是以NO4583-5-2-4A(CMS)为母本、自交系R0767-1-1-1-1为父本育成的杂交一代中熟大果朝天椒品种;果实指形单生朝天,果长8.6cm、果宽1.3cm、果肉厚0.16cm,青熟果深绿色,红熟果鲜红光亮,一致性好,单果质量5.8g左右,鲜干比约4.8;辛辣味浓,丰产性好,易干制、油分高、干物质含量高,适合作干椒或鲜椒酱制;综合抗性和适应性强,耐寒性、耐旱性、耐湿热性强,尤其表现为耐涝性强,高抗疫病、炭疽病和病毒病,适合南方雨水多的区域栽培。

摘要：星秀是以R0971AB细胞核雄性不育系(GMS)为母本,R0997为父本配制而成的杂交一代小米辣类型辣椒品种,果实小指形,果长7.5 cm左右,果宽1.4 cm左右,青熟果白色,老熟果红色,单生朝天,果尖较尖,单果质量4.9 g左右,果实辣味浓,单株挂果多,丰产潜力大,抗性强,适合作干椒或泡辣椒。

摘要：湘研红爪是以R07166-2-3A为母本,A30为父本配制而成的中晚熟干鲜两用簇生朝天椒杂交一代品种。该品种果实簇生,朝天,小指形,每簇结果7~10个,果长6.0~6.5 cm,果宽1.0 cm左右,青熟果绿色,红熟果鲜红色,光亮,果皮薄,辣味浓,品质好,商品性好,耐寒能力中等,耐旱、耐病毒病能力强,坐果能力强,连续结果性好,丰产稳产性好,每667 m^2产量1300 kg左右,高产可达1800 kg,深受广大消费者和菜农朋友的喜爱,适合作春夏季露地地膜覆盖丰产栽培。

摘要：湘辣706是以细胞核质互作雄性不育系R07166-2-3A为母本、自交系R0766-4-4为父本配制的中晚熟杂交一代小果单生朝天椒品种.该品种果实小指形,果长6~8 cm,果宽1.0 cm左右,单果质量5~6 g;青果绿色,老熟果红色,果表光亮,水分含量低,味辛辣,香味浓,适宜作鲜红椒上市或泡制、干制加工;植株生长势较强,株型高大,分枝多,叶色深绿;连续挂果能力强,前后期果实一致性好,采收期长,产量1400~1600 kg/667 m2;综合抗性强,耐湿热、耐干旱、耐涝,抗炭疽病和疫病,适合露地栽培.

摘要：A series of novel self-dispreading phenoxy carboxylic acid derivatives were designed and synthesized by I2 catalyzed one-step reaction. Their structures were confirmed by IR, NMR, and HRMS. The derivatives can self-spread and float on the water surface. Preliminary bioassays showed that some compounds, 3i–3p, had excellent herbicidal activities against water hyacinth. This strategy provided a novel approach for the water hyacinth control.

摘要：电磁铁是电磁超声传感器的重要组成部分,它与钢管构成的磁场是电磁超声传感器产生超声波的基础。本文建立磁感应强度与分子振动幅值的关系函数,用均匀实验设计对电磁超声传感器进行优化设计,实现了电磁超声传感器的小型化。实验研究证明,优化设计方法是正确的。