Multi-parameters measurement based on cascaded Bragg gratings in magnetic fluid-infiltrated photonic crystal fibre

Simultaneous measurement of multi-parameters is demonstrated quantitatively using two fibre Bragg gratings inscribed on a high birefringence photonic crystal fibre (PCF) and common PCF, respectively. The birefringence coefficient and the Bragg wavelengths corresponding to the fast-axis mode and slow-axis can be magnetic-controlled by filling magnetic fluid (MF) into several cladding air-holes. Based on the dependence of the MF refractive index on temperature and magnetic field, the sensitivity of the spectral response of the device to longitudinal strain, magnetic field and temperature are characterized, and the results of its application as a multi-parameter sensor are also presented.     

基于Ethereum的房地产供应链系统设计与实现

以太坊区块链技术是当今互联网时代的一项具有创新性、革命性的综合型分布式数据库账本技术,具有去中介化、自治性、数据不可篡改、可追溯、可编程等特点。分析了传统房地产供应链存在的不足,运用新兴的区块链技术,设计了基于以太坊智能合约的房地产供应链系统。给出了该系统的系统模型,包括系统流程和系统架构两部分。具体说明了系统所涉及到的四个功能模块。展示了系统的工作流程,并讨论了区块链+房地产供应链存在的问题。对区块链应用于房地产供应链领域进行总结,旨在为未来更好地将区块链应用于房地产供应链提供参考。     

以太网串口服务模块的光端机监控系统设计

设计了以太网串口服务模块,移植了TCP/IP协议,具有一个IP地址、多个端口号.系统具有多个套接字地址,每个套接字地址分配给一台终端设备,客户端通过套接字地址寻址终端设备,实现了客户端对设备的一对一的管理.该模块同时支持多连接,将其安装在局端光端机内,引出监控网口连接到以太网交换机土,能够分布式管理系统中的各个终端设备.     

液相沉淀反应在管式微通道反应器中的流动行为研究

以碳酸钙水相合成为模型反应,借助对流动反应过程的放大观测,从沉淀悬浮液的流变特性分析了液相沉淀反应在毫米级管式微通道中的流动行为特征以及通道堵塞的过程机理。结果表明,碳酸钙-水悬浮体系的黏度在低剪切速率下随固含率的增加而飙升,而反应通道堵塞的本质可归因于在壁面和流动主体区形成了固含率较高的局部高黏区,使流动性严重恶化。提高反应的流速加快了壁面沉积层和沉淀颗粒团聚体的形成,反而加快了堵塞;其中团聚体的形成远快于沉积层的积累,使团聚体的“架桥”虽晚于沉积层出现,却成为管路堵塞的主要因素。基于破坏流动壁面和主体的局部高黏区,设计了两种新型的微通道反应器模型,有可能为解决反应通道堵塞这一难题提供新的思路。     

Photogenerated cathodic protection and invalidation of silane/TiO<Subscript>2</Subscript> hybrid coatings

Silane/TiO₂ hybrid coatings were prepared on 304 stainless steel (304 SS) by a simple dipping method, where the silane is d-γ-methylacryloxy propyl trimethoxyl silane (CH₂=C(CH₃)COO(CH₂)₃Si(OCH₃)₃, MPMS). The photogenerated cathodic protection and invalidation of the hybrid coatings were evaluated by microstructure and electrochemical characterization. The coupling agent MPMS reduced the agglomeration of the nanosized TiO₂ powders and promoted the adhesion of the coatings. Barrier protection of the coupled metal was promoted for the hybrid coatings in a short corrosion time. However, MPMS decreased the carrier concentration of the TiO₂ electrode due to the large interface resistance. As a result, the corrosion potential shifted positively and the photogenerated cathodic protection decreased. In long-time corrosion, the hybrid coatings became invalid because of the accumulation of electropositive holes that may weaken the Ti–O bond and destroy the barrier effect.     

构建经济体系是西部小城镇建设的关键

加快西部地区小城镇的发展,在科学规划、结构调整、产业开发、农转非等问题上做文章,大量的农民劳动力转移到小城镇中来,大力发展小城镇的第三产业,推进西部地区的城镇化步伐。客观地说,这些思路都有一定的决策参考价值,但这些观点并没有揭示出我国西部地区小城镇建设的特殊性和本质问题。不论是从长远来看,还是从国内外城市化发展的规     

Vertical Phase Separation in Small Molecule:Polymer Blend Organic Thin Film Transistors Can Be Dynamically Controlled

Blending of small‐molecule organic semiconductors (OSCs) with amorphous polymers is known to yield high performance organic thin film transistors (OTFTs). Vertical stratification of the OSC and polymer binder into well‐defined layers is crucial in such systems and their vertical order determines whether the coating is compatible with a top and/or a bottom gate OTFT configuration. Here, we investigate the formation of blends prepared via spin‐coating in conditions which yield bilayer and trilayer stratifications. We use a combination of in situ experimental and computational tools to study the competing effects of formulation thermodynamics and process kinetics in mediating the final vertical stratification. It is shown that trilayer stratification (OSC/polymer/OSC) is the thermodynamically favored configuration and that formation of the buried OSC layer can be kinetically inhibited in certain conditions of spin‐coating, resulting in a bilayer stack instead. The analysis reveals here that preferential loss of the OSC, combined with early aggregation of the polymer phase due to rapid drying, inhibit the formation of the buried OSC layer. The fluid dynamics and drying kinetics are then moderated during spin‐coating to promote trilayer stratification with a high quality buried OSC layer which yields unusually high mobility >2 cm² V^?1 s^?1 in the bottom‐gate top‐contact configuration.     

LRGCPND: Predicting Associations between ncRNA and Drug Resistance via Linear Residual Graph Convolution

Accurate inference of the relationship between non-coding RNAs (ncRNAs) and drug resistance is essential for understanding the complicated mechanisms of drug actions and clinical treatment. Traditional biological experiments are time-consuming, laborious, and minor in scale. Although several databases provide relevant resources, computational method for predicting this type of association has not yet been developed. In this paper, we leverage the verified association data of ncRNA and drug resistance to construct a bipartite graph and then develop a linear residual graph convolution approach for predicting associations between non-coding RNA and drug resistance (LRGCPND) without introducing or defining additional data. LRGCPND first aggregates the potential features of neighboring nodes per graph convolutional layer. Next, we transform the information between layers through a linear function. Eventually, LRGCPND unites the embedding representations of each layer to complete the prediction. Results of comparison experiments demonstrate that LRGCPND has more reliable performance than seven other state-of-the-art approaches with an average AUC value of 0.8987. Case studies illustrate that LRGCPND is an effective tool for inferring the associations between ncRNA and drug resistance.     

分层自动剩余校正

目前流行的自动剩余校正方法常以一标准反射层的剩余时差为基础,因而对此标准层以外的、具有不同产状的反射层的校正效果就不满意。分层自动剩余校正方法则是根据地震记录不同的反射时间和产状,选取若干不同的时窗,分别求出剩余校正量,对记录进行分层剩余校正。