Hydrophilic self-assembly monolayers for pentacene-based thin-film transistors

A series of hydrophilic alkanethiols, HS(CH₂)_nOH with n = 3, 4, 6, 8, 9 and 11, have been self-assembled on gold electrodes of pentacene-based thin-film transistors. The multi-parametric and ultra-sensitive response of these devices allows us to characterize both charge–injection and electrical stability moving from vacuum to air. The decay exponent β of charge injection is found to be 0.7–1.1 Å^?1 in agreement with earlier measurements of charge tunneling done by electrochemistry and large-area molecular junctions. We find that the intermediate chain lengths (n = 4 and 6) yield an optimum response as they represent the best compromise in terms of decrease of the contact-resistance and bias stress.     

Tag-less back-translation

An effective method to generate a large number of parallel sentences for training improved neural machine translation (NMT) systems is the use of the back-translations of the target-side monolingual data. The standard back-translation method has been shown to be unable to efficiently utilize huge amounts of existing monolingual data because of the inability of translation models to differentiate between authentic and synthetic parallel data during training. Tagging, or using gates, has been used to enable translation models to distinguish between synthetic and authentic data, improving standard back-translation and also enabling the use of iterative back-translation on language pairs that underperformed using standard back-translation. In this work, we approach back-translation as a domain adaptation problem, eliminating the need for explicit tagging. In our approach—tag-less back-translation—the synthetic and authentic parallel data are treated as out-of-domain and in-domain data, respectively, and through pre-training and fine-tuning, the translation model is shown to be able to learn more efficiently from them during training. Experimental results have shown that the approach outperforms the standard and tagged back-translation approaches on low resource English-Vietnamese and English-German NMT.

     

高压蒸汽燃煤锅炉控制系统改造总结

利用FOXBORO公司I/A Series 51D集散控制系统(DCS)对天脊煤化工集团有限公司高压蒸汽锅炉控制系统进行技术改造,确保锅炉的安全、高效运行.     

Novel esterification reaction from biomass product by coupled acetate membrane and catalysts for ethyl lactate separation

This study presents the effect of combined membrane separation and heterogeneous catalysts for the production of ethyl lactate solvent. The enhanced process is a flat sheet cellulose acetate membrane and cation-exchange resin catalysts. A methodology based on catalyst and acetate membrane impregnation in the presence of a sweep gas at low pressure with the aim of obtaining a higher yield of the ester product have been developed. The esterification reaction was carried out at the temperature of 60 °C. The ester product gave a percentage yield of up to 75%. The ion chromatogram of the ester product obtained in the catalyst and membrane impregnation was compared with the esterification product of the batch esterification reaction. The gas chromatograph NIST library spectra of the ester product indicated the structure of ethyl lactate (45) on the mass spectra which was in accordance with the commercial ethyl lactate. Products obtained on dowex 50W8x and amberlyst 36 resin catalysts were found to elute faster at 1.503 and 1.527 min respectively in contrast to those using amberlyst 15 and amberlyst 16. In all, the percentage yield of the ethyl lactate can be improved using cellulose acetate membrane. Amberlyst 36 and dowex 50W8x cation-exchange resins were revealed as the most effective catalysts for the esterification process involving lactic and ethanol to produce ethyl lactate in contrast to other cation-exchange resins that were used in the study. The results further confirms effectiveness of cellulose acetate membrane in the selective removal of the water from the esterification product.     

国外轮胎帘子布浸胶机的发展现状

轮胎帘子布浸胶机是生产轮胎骨架材料的专用机械。40多年前,轮胎帘子布浸胶机只是单浴式,由于浸胶机运行速度低,温度及张力误差大,能耗高．浸胶布运行中易偏离中心,成型质量差,浸胶帘布质量一致性较差。随着世界科学技术的不断发展．随着轮胎骨架材料的多样化,轮胎帘子布浸胶机已发生了巨大的改变。目前,如瑞士贝宁格泽尔公司（benninger）、德国GBE公司、美国利兹勒（1itzler）、日本中外炉工业株式会社等公司在提高浸胶帘子布产量和质量方面,以及在轮胎帘子布浸胶机智能化、人性化和精细化设计方面都有了历史性的飞跃。现今轮胎帘子布浸胶机主要是双浴式．它具有速度高、低能耗、工艺变通性强、浸胶帘子布成型质量好、易于清洁,所生产的浸胶帘布质量稳定等优点,完全能够满足高性能轮胎骨架材料生产的需求。现将全球轮胎帘子布浸胶机关键部位的特点作一简要概述。     

Nonlinear iterative methods for solving the split common null point problem in Banach spaces

In this work, we study the split common null point problem in the framework of Banach spaces. We propose an iterative scheme for solving the problem and then prove strong convergence theorem of the sequences generated by our iterative scheme under suitable conditions. We finally provide some numerical examples to support the main theorem.     

Extragradient Algorithm for Solving Pseudomonotone Equilibrium Problem with Bregman Distance in Reflexive Banach Spaces

Networks and Spatial Economics - Using the Bregman distance technique, we study the approximation of solution of pseudomonotone equilibrium problem using modified extragradient method in a real...     

A strong convergence theorem for a general split equality problem with applications to optimization and equilibrium problem

The purpose of this paper is to introduce and study an iterative algorithm for solving a general split equality problem. The problem consists of finding a common element of the set of common zero points for a finite family of maximal monotone operators, the set of common fixed points for a finite family of demimetric mappings and the set of common solutions of variational inequality problems for a finite family of inverse strongly monotone mappings in the setting of infinite-dimensional Hilbert spaces. Using our iterative algorithm, we state and prove a strong convergence theorem for approximating a solution of the split equality problem. As special cases, we shall utilize our results to study the split equality equilibrium problems and the split equality optimization problems. Our result complements and extends some related results in literature.