Super-oleophilicity Co-doping Co2+/F-/TiO2 one-dimensional nanotubes for photocatalytic denitrification of light oil

In this study, a simple hydrothermal synthesis method was adapted for the preparation of Co-doping Co²⁺/F^-/TiO₂ nanotubes photocatalyst, and the micro-nano structure of catalysts prepared by biomimetic technology which makes the catalyst have super-oleophilicity property. Co²⁺/F^-/TiO₂ revealed improved photocatalytic performance for denitrification of light oil compared to single TiO₂ photocatalysts. The enhance of photocatalytic activity can be attributed to narrowing the band gap, increasing the light response wavelength and exposing more highly active crystal surfaces due to synergistic effects of Co²⁺ and F^? in the photocatalyst.     

智能WEB信息提取系统的研究和设计

XML业已成为WEB数据发布与交换的标准,包装器技术为数据挖掘提供了重要实现步骤,智能代理技术以其智能、代理特性在控制协调挖掘上起着重要作用。本文将这三项标准和技术进行有机结合,应用于WEB数据挖掘上,借助J2EE三层体系结构思想,给出了智能WEB信息提取实现方案,并简要阐述了该系统处理用户挖掘请求的流程,体现了该系统较强的智能理解和概括能力。     

化学改性粉煤灰用于生活污水处理的研究

通过对粉煤灰进行酸处理和碱激发进行改性,测定改性前后粉煤灰对生活污水COD的去除率确定粉煤灰活性的改善程度。实验结果表明,经过1：20硫酸处理后粉煤灰吸附性能提高,对COD的去除率可达75%左右,而采用碱改性的效果不显著,酸、碱联合对粉煤灰改性的效果较好,并有利于出水pH值的改善。     

含3-氨基(N-氨基酞酰亚胺)的新型聚酰亚胺合成与表征

合成了一种不对称舍肼二胺单体3-氨基(N-氨基酞酰亚胺),通过1H NMR、IR确认了其结构,并用15N NMR证实了该化合物两种氨基活性存在差异.采用传统的一步法用对氯苯酚做溶剂,用该二胺单体与三酐4,4'-BPDA,4,4'-ODPA 4,4'-BTDA,4,4'-HQDPA和BPADA聚合得到一系列新型聚合物,并进行了表征.其中由4,4'-HQDPA和BPADA聚合得到的聚酰亚胺薄膜,有较好的机械性能.     

New Stability Condition of T-S Fuzzy Systems and Design of Robust Flight Control Principle

Unlike the previous research works analyzing the stability of the T-S (Takagi-Sugeno) fuzzy model, an extension on the stability condition of T-S fuzzy systems with a different strategy is provided. In the strategy a new variable, which is relative to the grade of fuzzy membership function, is introduced to the stability analysis and a new stability conclusion is deduced. The definition of stability condition in this paper is different from previous works, though they are similar in form. With the proposed method, the simulation in flight control law shows a better effectiveness.     

高半纤维素浆粕纺制Lyocell纤维的结构与性能

采用成本低、半纤维素含量高的浆粕纺制Lyocell纤维,重点对制得的高半纤维素Lyocell纤维的结晶、取向、力学性能、原纤化和染色性等进行了研究。研究表明:这种用高半纤维素浆粕纺制的Lyocell纤维与用高α-纤维素浆粕纺制的Lyocell纤维相比,它的模量、结晶度、取向度、抗原纤化能力和染色性等都好于后者。     

清洁生产审计方案评估与可持续发展的调整完善

清洁生产的可行性和科学性由于可持续发展战略目标的确立，有了新的审计评价的考虑因素。可持续发展使得清洁生产审计方案评估面临着新的形势和要求，文章试就清洁生产方案的审计评估的调整完善与相关的问题进行讨论。     

Silk materials for medical,electronic and optical applications

Silk derived from the silkworm Bombyx mori is among the most important fibrous protein biomaterials due to large-scale production from natural sources, excellent biocompatibility, unique mechanical properties and controllable degradation. Silk fibroin can be processed into a variety of formats to match different applications, such as tissue engineering, drug delivery or as the passive substrate of a bio-device. Advances in fabrication technologies provide new possibilities for the combination of silk fibroin with other nanomaterials to functionalize silk fibroin for specialized purposes, including sensing, cell visualization,resistance to ultraviolet light and provision of antibacterial properties. As the requirement for wearable and intelligent devices has become increasingly important over recent years, silk fibroin has been utilized as the active element in electronic and optical instruments. This review summarizes these recent advances in the innovative applications of silk fibroin.     

基岩潜山是渤海天然气勘探的重要领域

在渤海海域过去几十年的油气勘探中 ,潜山领域始终处于次要地位 ,但渤海周边陆区潜山领域的勘探成果相对比较突出 ,已发现了一些大、中型潜山气田。在总结渤海湾盆地陆、海探区潜山油气勘探成果的基础上 ,分析了海域潜山油气藏的类型、主要特点及潜山天然气成藏条件。以渤中凹陷为中心的中南部海域具备潜山天然气勘探的优势和潜力 ;渤中 2 0 2 2等潜山构造带是可能发现大、中型潜山气藏的有利区带。     

Nanoparticle-stabilized Alkenyl Succinic Anhydride (ASA) Emulsions: A Review

Alkenyl succinic anhydride (ASA) is a popular paper-sizing agent that is generally added to papermaking systems as an aqueous emulsion. Herein, we reviewed the recent work focusing on ASA emulsions stabilized by solid particles. Solid particle-stabilized ASA emulsions generally possess high ASA content and exhibit good sizing performance. The particles that have been used to stabilize ASA emulsions typically include montmorillonite, laponite, alumina, TiO₂, Fe₃O₄, polyaluminum sulfate (PAS), and cellulose nanocrystals (CNCs). Montmorillonite is the first extensively studied particle stabilizer for ASA emulsions. Laponite is undoubtedly the most competent particle stabilizer for preparing ASA emulsions with high sizing efficiency. Montmorillonite and laponite can be used individually as stabilizers after modification or as co-stabilizers with other particles or polymers. TiO2, alumina, PAS, and CNCs are commonly used as stabilizers either individually or with other particles.