摘要：As a core part of subsea production systems,subsea control modules(SCMs)are costly,difficult,and expensive to install and inconvenient to use in underwater ***,performance and function tests must be carried out before launching *** study developed a testing device and an SCM test by investigating SCMs and their *** testing device includes four parts:a hydraulic station,an SCM test stand,a signal generating device,and an electronic test ***,the basic indices of the testing device were determined from the performance and working parameters of the ***,the design scheme of the testing device for the SCM was tentatively proposed,and each testing device was ***,a practical measurement of the SCM,in combination with the hydraulic station,SCM test stand,signal generator,electronic unit,and highpressure water tank,was carried out according to the test *** measurement mainly involved equipment inspection before testing and an experimental test for the *** validity and feasibility of the testing device and method were simultaneously verified through an association test.

摘要：Osmotic energy between river water and seawater has attracted interest as a new source of sustainable *** membranes in a reverse electrodialysis configuration can capture energy from salinity ***,current membrane materials suffer from high resistances,low stabilities,and low charge densities,which limit their further ***,we designed a high-performance nanofluidic membrane using carboxylic cellulose nanofibers functionalized with graphene oxide nanolamellas with cement-and-pebble microstructures and stable skeletons for enhanced ion transmembrane *** mixing artificial river water and seawater,the composite membrane achieved a high output power density up to 5.26 W m^(−2).Additionally,the membrane had an excellent acid resistance,which enabled long-term use with over 67 W m^(−2) of power *** performance of this composite membrane benefited from the mechanically strong cellulose fibers and the bonding between nanofibers and *** this work,we highlight promising directions in industrial waste treatment using energy extracted from chemical potential gradients.

摘要：随着道路维修养护任务的增加,RAP材料再利用技术在国内得到了新发展。通过多组高温车辙试验、低温弯曲试验、浸水马歇尔试验、冻融劈裂试验及力学性能试验对不同RAP掺量下泡沫温再生沥青混合料路用性能进行分析,研究结果表明:RAP材料经过分档处理后,可以减小材料的不均匀性,有利于保持级配的整体稳定;随着RAP掺量的增加,泡沫温再生混合料高温稳定性迅速提高,力学性能增强,低温抗裂性下降,水稳定性先小幅增大后大幅减小,推荐泡沫温再生沥青混合料适宜的RAP掺量为30%,以满足公路养护经济适用性要求。

摘要：为协助高校学生查找教室空座分布情况和辅助教师考勤,设计基于视频监控的教室人数统计方法。由于视频监控教室场景下的学生都是处于坐立状态,躯干部分被桌椅遮挡,无法进行全身轮廓检测,并且学生都是低头学习,也无法选择人脸识别进行计数,而选择人头这一部位作为检测目标更加适合教室场景。首先采用YOLOv5s网络作为人头检测识别的模型,在自制人头数据集上对网络进行训练,利用训练好的YOLOv5s网络提取不同视频监控下人头的特征和位置信息,实现对学生人头的识别,然后针对视频和图片分别设计人头计数方法。实验结果表明,所提出的人数统计方法能够很好地应用于教室场景中,在保证较高准确率的同时,能够实时准确地检测到摄像头范围内多个角度的人头,进而统计当前教室的人数。

摘要：针对普通治疗车操作流程繁琐、无菌面欠平整坚固等缺点,我们设计制作了床边调节式PICC穿刺专用车,其上层托盘可升降,下层托盘可360度旋转,无菌面大而稳固,且使PICC穿刺过程规范、流畅、安全,减少了相关并发症的发生,深化PICC专科护理,更好地体现患者利益第一的原则。

摘要：由于精神或生理等原因,住院患者坠床事件时有发生,但医院病床自带的护栏又不足以防止此类事件发生。为此研究者设计了一种新型防坠床装置,在没有护栏的空缺处做上防护,并通过蜂鸣器及时提醒陪护人员等人性化设计,期望降低高危坠床患者坠床发生率,提升患者安全及满意度,减少了医疗纠纷,同时减轻医护人员压力。经初步应用,效果明显。

摘要：平面交叉口是城市路网中交通问题最突出的部位。在大城市的中心区,由于用地十分紧张,改建互通式立体交叉已不可能。而由于这些地区车流量大,机动车与非机动车以及行人相互干扰严重。因此,平面交叉口的科学管制非常重要。我国比较常看到的,一般是对比单位时间里新旧方案的流量变化数值,比如较之前增加20%等说法,现在还有个趋势是比较流行用所谓的“大数据”分析做支撑来得到这个变化值。其实这种评价方式,对交叉口控制优化方案的实际效果评价,是很难充分和准确的。

摘要：超挖现象是软岩隧洞钻爆开挖的一大通病,对工程的安全、质量、成本和进度等会产生严重影响。以某中小断面引水隧洞钻爆开挖为例,首先描述其爆破设计和开挖效果,然后结合爆破参数和地质条件分析超挖的主要影响因素,最后从技术和管理层面提出优化爆破参数、改善地质条件、动态精细管理三大控制技术,建立以“周边孔、辅助孔、超前支护、超前注浆”为优化改善对象的递进式超挖控制技术。通过现场实践对比研究了不同技术下的超挖深度和各自贡献。结果表明:超挖控制无需同时对多个因素进行优化改善,可采用以“周边孔、辅助孔”为优化对象的爆破参数优化控制技术,一般优先通过该方法进行超挖控制;在爆破参数优化后仍无法控制超挖的情况下,可采用以“超前支护、超前注浆”为改善对象的地质条件改善控制技术,和爆破参数优化控制技术形成“递进式超挖控制技术”;按照超挖控制贡献大小依次为超前注浆、超前支护、周边孔和辅助孔,但地质条件改善成本较高,在满足工程要求的前提下,建议优先选用爆破参数优化控制技术。

摘要：采用自行设计的冲击摆实验系统对铝蜂窝夹芯板在爆炸载荷作用下的动力响应进行了系统实验研究,给出了面板和铝蜂窝不同区域的不同变形模态,得到了不同炸药当量对铝蜂窝夹芯板动态响应的影响规律,证实了铝蜂窝夹芯板产生较大塑性变形时,比一般的结构具有更好的能量吸收特性。并利用LS-DYNA对其动力响应进行了数值仿真,考察了炸药起爆、接触界面及上表面接触力对夹芯板变形影响的全过程,得到了板中心的最终变形和芯层的变形模式,与实验结果吻合较好。

摘要：According to the content of Ar^(39) in the sample to be tested,the age of the sample can be accurately *** method is used in the measurement of glacial age,the measurement of ancient fossils,*** the Ar39 ion source has been established to meet the requirement of ice age survey and fossil *** software of the Ar^(39) ion source control system is based on EPICS(Experimental Physics and Industrial Control System)*** mainly consists of two layers:IOC layer and an *** OPI layer also includes two layers:Channel Access(CA)client interface and application *** IOC layer includes six layers:Channel Access(CA)server interface,database access interface,dynamic database,record support module,device support module and device driver.