时效处理对 TiNi 合金相变与性能的影响

通过用ＴＥＭ等方法研究热处理制度（固溶处理、时效处理）对ＴｉＮｉ合金相变组织和性能的影响，找出了最佳热处理制度。结果表明，在４５０～５００℃进行时效处理，Ｔｉ－５０．８ａｔ％Ｎｉ的合金出现了大量的Ｔｉ３Ｎｉ４相，且恢复率最高。     

实时可视决策系统在渤海湾旅大油田开发中的应用

实时可视决策系统可以将接收到的现场数据实时传输到陆地，井眼轨迹和随钻测井资料可实时在三维地质油藏模型中显示，供钻完井和地质油藏专家综合分析、判断并及时下达指令指导现场施工。旅大油田运用实时可视决策系统成功钻成了6口水平井和4口水平分支井，实现了不钻领眼、井眼轨迹在最佳油层内成功着陆，并使水平井段尽可能沿着油层最佳位置钻进。例如在LD10—1-A25m水平分支井段的钻井过程中，利用实时可视决策系统，控制水平井眼轨迹在油层最佳位置钻进，获得了日产810M^3。的高产油气流。     

EO/EG装置生产过程中有机酸的生成原因分析

分析了环氧乙烷，乙二醇装置工艺系统中有机酸生成的原因．指出在银催化剂作用下，乙烯氧化过程有机酸生成主要成分是甲酸和乙酸，银催化剂不是影响氧化反应器出口醛含量的主要因素；杂质、温度等对反应器出口气中的醛含量有重要影响，也直接影响到装置前系统的有机酸含量；乙二醇后系统中有机酸的增加仅取决于两级吸收及解析工艺的稳定操作。     

空分设备氮水预冷系统改进

分析 6 0 0 0m3 /h空分设备原氮水预冷系统存在的问题及原因 ,将水循环由原制氧站大循环改为氮水预冷系统内部的自循环 ,只增加水换热器和蓄水器 ,效果明显。     

电力物联网D2D通信中模式预选的多播重传技术

针对电力物联网D2 D通信中的模式预选问题,提出多播重传机制.首先,通过分析D2 D传输的集中式和分布式2种重传方案的优势和不足,提出一种新的基于重传模式预选的D2 D多播重传方案.新方案通过簇头汇总D2 D多播ACK状态和簇内链路质量,避免了集中式方案中上行汇报信令开销太大的问题;同时,通过让簇头来决定重传方案后再上报基站的方式,避免了分布式重传方案中预留资源带来的资源浪费问题.簇头充分考虑D2 D链路差异,根据D2 D链路质量自适应地选择最优传输节点,可充分利用D2 D链路的多信道分集增益.理论分析和计算机仿真验证方案在信令开销和传输效率方面的有效性.     

基于Web services的WebGISVisA体系结构研究与实现*

针对目前网络地理信息系统体系结构难以实现Internet环境下的异构空间信息的互操作问题,深入分析其主要原因,在对现有网络地理信息系统的三层体系结构进行深入分析的基础上,提出一种基于Web services的网络地理信息系统体系结构(Web-based geographical information services visualization architecture,WebGISVisA).WebGISVisA体系结构通过Web services对各个地理信息系统组件进行包装,实现各个组件的跨平台操作,从技术上使得客户端和服务端达到了负载平衡,完成了WebGIS三维的虚拟现实,实现了在Internet下空间数据互操作和跨平台的功能,最大限度地达到数据共享.     

玻璃纤维分束器工艺技术改进研究与应用

为了降低玻璃纤维生产成本,提升分束纱产品质量,增加市场竞争优势,根据分束纱生产工艺线特点,从分束器设计开发及工艺技术调整应用方面进行攻关,研制开发出了特殊的拉丝分束装置,解决了拉丝过程中玻璃纤维在分束器处飞丝和浸润剂浪费的问题.     

The miR-106b/NR2F2-AS1/PLEKHO2 Axis Regulates Migration and Invasion of Colorectal Cancer through the MAPK Pathway

Increasing numbers of miRNAs have been observed as oncogenes or tumor suppressors in colorectal cancer (CRC). It was recently reported that hsa-miR-106b-5p (miR-106b) promoted CRC cell migration and invasion. However, there were also studies showing contradictory results. Therefore, in the present study, we further explore the role of miR-106b and its downstream networks in the carcinogenesis of CRC. We observed that the expression of miR-106b is significantly increased in Pan-Cancer and CRC tissues compared with normal tissues from The Cancer Genome Atlas (TCGA) database. Furthermore, we used Transwell, Cell Counting Kit-8, and colony formation assays to clarify that miR-106b promotes the migratory, invasive, and proliferative abilities of CRC cells. For the first time, we systematically screened the target mRNAs and lncRNAs of miR-106b using TCGA database and the bioinformatics algorithms. Dual-luciferase reporter assay confirmed that NR2F2-AS1 and PLEKHO2 are the direct targets of miR-106b. Furthermore, NR2F2-AS1 acts as a competing endogenous RNA (ceRNA) to regulate PLEKHO2 expression by sponging miR-106b. The results of Gene set enrichment analysis (GSEA) and Western blot indicated that they play important roles in CRC progression by regulating MAPK pathway. Thus, miR-106b/NR2F2-AS1/PLEKHO2/MAPK signaling axis may suggest the potential usage in CRC treatment.     

Boron Nitride Nanosheets Strengthened PVA/Borax Hydrogels with Highly Efficient Self-Healing and Rapid pH-Driven Shape Memory Effect

Self-healing hydrogels often possess poor mechanical properties which largely limits their applications in many fields. In this work, boron nitride nanosheets are introduced into a network of the poly(vinyl alcohol)/borax (PVA/borax) hydrogels to enhance the mechanical properties of the hydrogel without compromising the self-healing abilities. The obtained hydrogels exhibit excellent mechanical properties with a tensile strength of 0.410 ± 0.007 MPa, an elongation at break of 1712%, a Young's Modulus of 0.860 ± 0.023 MPa, and a toughness of 3.860 ± 0.075 MJ m⁻³. In addition, the self-healing efficiency of the hydrogels is higher than 90% within 10 min at room temperature. Benefiting from the excellent self-healing properties, the shapeability of the hydrogel fragments is observed using different molds. In addition, the hydrogels display rapid pH-driven shape memory effects and can recover to their original shape within 260 s. Overall, this work provides a new approach to hydrogels with integrated excellent mechanical properties, self-healing abilities, and rapid pH-driven shape memory effects.