检索结果-南通市图书馆

过硫酸盐氧化聚合技术深度处理有机废水研究进展

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

化工环保 2024年第4期44卷 455-462页

作者：王骏王孟佳贾方晴张曦露林雅洁谭小耀天津工业大学环境科学与工程学院天津300387 沧州市天津工业大学研究院河北沧州061000 天津工业大学化学工程系天津300387 中国通用咨询投资有限公司北京100071

基于过硫酸盐活化的氧化聚合技术在有机废水定向氧化和深度处理方面受到广泛关注。非均相催化过硫酸盐能使酚类等污染物通过氧化转移反应形成有价值的聚合物,在大幅削减氧化剂用量的同时减少碳排放,有望实现减污降碳和资源回收的双重目... 详细信息

基于过硫酸盐活化的氧化聚合技术在有机废水定向氧化和深度处理方面受到广泛关注。非均相催化过硫酸盐能使酚类等污染物通过氧化转移反应形成有价值的聚合物,在大幅削减氧化剂用量的同时减少碳排放,有望实现减污降碳和资源回收的双重目标。本文主要概述了矿质和碳质材料耦合过硫酸盐定向氧化有机污染物的性能、构-效关系和影响因素,着重介绍了可能的氧化聚合机理和产物回收分析方法,并对该领域未来的研究方向进行了展望。

关键词：过硫酸盐非均相催化废水资源化氧化聚合反应机理

同方期刊数据库

微血管吻合器辅助游离组织瓣移植修复颌面部肿瘤术后缺损的临床应用

在线全文

学校读者我要写书评

暂无评论

中国美容整形外科杂志 2024年第8期35卷 488-491页

作者：明华伟袁宗毅张兴安贾佳欣王华东陈方园谭小尧何芸川北医学院第二临床医学院南充市中心医院口腔颌面外科川北医学院第二临床医学院南充市中心医院口腔科

目的探讨游离组织瓣在颌面部肿瘤术后缺损修复中应用微血管吻合器吻合血管的临床效果。方法回顾性分析自2018年3月至2021年3月，南充市中心医院口腔颌面外科采用游离组织瓣修复118例颌面部肿瘤术后缺损患者，同期选择微血管吻合器辅... 详细信息

目的探讨游离组织瓣在颌面部肿瘤术后缺损修复中应用微血管吻合器吻合血管的临床效果。方法回顾性分析自2018年3月至2021年3月，南充市中心医院口腔颌面外科采用游离组织瓣修复118例颌面部肿瘤术后缺损患者，同期选择微血管吻合器辅助完成游离组织瓣血管吻合，记录微血管吻合器直径、血管吻合时长及吻合后即刻通畅率，术后随访组织瓣成活率。其中前臂皮瓣58例、股前外侧穿支皮瓣57例、腓骨瓣3例。结果 118例患者均完成游离组织瓣移植修复，术中使用微血管吻合器234枚，其中233枚用于静脉吻合（3例为单静脉端侧吻合，其余115例均为双静脉端端吻合），吻合单根血管耗时为3.0～8.0 min，平均5.4 min;1枚用于动脉端端吻合，耗时12.0 min。所有借助微血管吻合器吻合后的血管即刻通畅率为100%。术后随访3个月，118例游离组织瓣成活117例，其中2例于术后第2天发生血管危象，经急诊探查抢救，1例组织瓣成活，另1例坏死后清创，改用胸大肌肌皮瓣修复创面。结论微血管吻合器辅助游离组织瓣移植修复颌面部肿瘤术后缺损，可明显缩短血管吻合时间，操作简便、快捷，吻合口质量较为可靠，是游离组织瓣血管吻合的一种理想选择。

关键词：微血管吻合器游离组织瓣血管吻合显微外科修复重建

Preparation of microtubular solid oxide fuel cells based on highly asymmetric structured electrolyte hollow fibers

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science China Chemistry 2011年第5期54卷 850-855页

作者： LIU Yang LIU Nan tan xiaoyao School of Chemical Engineering Shandong University of TechnologyZibo 255049China School of Environmental and Chemical Engineering Tianjin Polytechnic UniversityTianjin 300160China

A simple and cost-effective method has been developed for the fabrication of microtubular solid oxide fuel cells (MT-SOFCs). Highly asymmetric electrolyte hollow fibers composed of a thin dense skin layer and a thick porous substrate are first prepared by a modified phase inversion/sintering technique. The porous substrate is then formed into the anode by deposition of a Ni catalyst via an electroless plating method inside the pores while the thin dense skin layer serves directly as the electrolyte film of the fuel cells. A porous cathode layer is produced on the outer surface of the Ni-deposited hollow fibers by slurry coating and subsequent sintering to form a complete micro tubular fuel cell. The process has been employed to fabricate yttrium stabilized zirconia (YSZ) supported Ni-YSZ-YSZ-La0.6Sr0.4Co0.2Fe0.8O3-(LSCF) microtubular fuel cells. The maximum output of the resulting cells is 159.6 mW cm-2 at 800 °C when using H2 as the fuel feed and air as the oxidant.

关键词：固体氧化物燃料电池多孔中空纤维不对称结构电解质膜微管制备基础钇稳定氧化锆

Gas permeation properties of a metallic ion-cross-linked PIM-1 thin-film composite membrane supported on a UV-cross-linked porous substrate

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 2018年第12期26卷 2477-2486页

作者： Hongyong Zhao Lizhong Feng Xiaoli Ding xiaoyao tan Yuzhong Zhang State Key Laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes Tianjin Polytechnic UniversityTianjin 300387China School of Environmental and Chemical Engineering Tianjin Polytechnic UniversityTianjin 300387China Institute of Separation Matenal and Process Control School of Material Science and Engmeering Tianjin Polytechnic UniversityTianjin 300387China

Metallic ion-cross-linked polymer of intrinsic microporosity(PIM-1) thin-film composite(TFC) membranes supported on an ultraviolet(UV)-cross-linked porous substrate were fabricated. The UV-cross-linked porous substrate was prepared via polymerization-induced phase separation. The PIM-1 TFC membranes were fabricated via a dip-coating procedure. Metallic ion-cross-linked PIM-1 TFC membranes were fabricated by hydrolyzing the PIM-1 TFC membrane in an alkali solution and then cross-linking it in a multivalent metallic ion solution. The pore size and porous structures were evaluated by low-temperature N_2 adsorption–desorption analysis. The membrane structure was investigated by field-emission scanning electron microscopy. The effects of heat treatment and pore-forming additives on the gas permeance of the UV-cross-linked porous substrate are reported. The effects of different pre-coating treatments on the gas permeance of the metallic ion-cross-linked PIM-1 TFC membrane are also discussed. The metallic ion-crosslinked PIM-1 TFC membrane displayed high CO_2/N_2 selectivity(23) and good CO_2 permeance(1058 GPU).

关键词： Gas separation Polymerization-induced phase separation UV-cross-linked porous substrate Metallic ion-cross-linked PIM-1TFC membrane

Preparation and properties of PPSU/GO mixed matrix membrane

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 2017年第4期25卷 408-414页

作者： Shujuan Xiao Shouwu Yu Li Yan Ying Liu xiaoyao tan School of Material Science and Engineering Tianjin Polytechnic UniversityTianjin 300387China Qing gong College North China University of Sdence and TechnologyYangshan 063009China College of Materials Sdence and Engineering North China University of Science and TechnologyYangshan 063009China College of Foreign Languages North China University of Science and TechnologyTangshan 063009China

Polyphenylene sulfone/graphene oxide(PPSU/GO) mixed matrix membranes with different GO contents are prepared by phase inversion technique using, PEG-1000 as porogen, and N,N-dimethylacetamide(DMAC) as *** hydrophilicity and pure water flux of the membrane are investigated. The morphology, hydrophilicity, thermodynamic stability and compatibility of the membranes are characterized by various techniques such as SEM,TGA, FTIR and so on. The permeation properties of the membrane are measured in terms of pure water flux and bovine serum albumin(BSA) retention. The results indicate that when the GO content is 1.5 wt%, an evenly distributed finger structure has been formed in the mixed matrix membranes. Owing to the presence of GO,the hydrophilicity and the thermal stability of the membranes are improved, and the fouling resistance is also enhanced.

关键词： Graphene oxide Polyphenylene sulfone Mixed matrix membrane Antifouling

Improved multi-scale inverse bottleneck residual network based on triplet parallel attention for apple leaf disease identification

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Agriculture 2024年第3期23卷 901-922页

作者： Lei tang Jizheng Yi xiaoyao Li College of Computer&Information Engineering Central South University of Forestry and TechnologyChangsha 410004China Yuelushan Laboratory Carbon Sinks Forests Variety Innovation Center Changsha 410000China

Accurate diagnosis of apple leaf diseases is crucial for improving the quality of apple production and promoting the development of the apple industry. However, apple leaf diseases do not differ significantly from image texture and structural information. The difficulties in disease feature extraction in complex backgrounds slow the related research progress. To address the problems, this paper proposes an improved multi-scale inverse bottleneck residual network model based on a triplet parallel attention mechanism, which is built upon ResNet-50, while improving and combining the inception module and ResNext inverse bottleneck blocks, to recognize seven types of apple leaf(including six diseases of alternaria leaf spot, brown spot, grey spot, mosaic, rust, scab, and one healthy). First, the 3×3 convolutions in some of the residual modules are replaced by multi-scale residual convolutions, the convolution kernels of different sizes contained in each branch of the multi-scale convolution are applied to extract feature maps of different sizes, and the outputs of these branches are multi-scale fused by summing to enrich the output features of the images. Second, the global layer-wise dynamic coordinated inverse bottleneck structure is used to reduce the network feature loss. The inverse bottleneck structure makes the image information less lossy when transforming from different dimensional feature spaces. The fusion of multi-scale and layer-wise dynamic coordinated inverse bottlenecks makes the model effectively balances computational efficiency and feature representation capability, and more robust with a combination of horizontal and vertical features in the fine identification of apple leaf diseases. Finally, after each improved module, a triplet parallel attention module is integrated with cross-dimensional interactions among channels through rotations and residual transformations, which improves the parallel search efficiency of important features and the recogniti

关键词： multi-scale module inverse bottleneck structure triplet parallel attention apple leaf disease

Design and synthesis of Al-MOF/PPSU mixed matrix membrane with pollution resistance

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 2021年第1期34卷 110-120页

作者： Shujuan Xiao Xiaowen Huo Shuxin Fan Kui Zhao Shouwu Yu xiaoyao tan College of Material Science and Engineering North China University of Science and TechnologyTangshan 063210China School of Chemistry and Chemical Engineering Tiangong UniversityTianjin 300387China

To enhance the performance of the polyphenylene sulfone(PPSU) membrane,a novel mixed matrix membrane with hydrophilicity and antifouling properties was *** PPSU as the ba sic membrane material,polyvinyl pyrrolidone(PVP) as the porogen,N-Methyl pyrrolidone(NMP) as the solvent,and MOF-CAU-1(Al_(4)(OH)_(2)(OCH_(3))_4(H_2 N-BDC)_(3)·xH_(2) O) as the filler,PPSU/CAU-1 mixed matrix membrane(MMM) was prepared by an immersion precipitation and phase transformation *** changing the amount of MOF-CAU-1,the properties and performance of the MMM membrane were investigated in terms of hydrophilicity,pore morphology,surface roughness,and dye *** results show that the highest pure water flux of the mixed reached 47.9 L·m^(-2)·h^(-1), when the CAU-1 addition amount was 1.0 wt%, which was 23% higher than that of the pure PPSU *** the rejection rate and the antifouling performance of the MMM membrane also noticeably improved.

关键词： Mixed matrix membranes Antifouling Metal-organic frameworks Membrane separation technology

Synthesis and characterization of SrCe_(0.95)Y_(0.05)O_(3-δ) nano powders by low temperature combustion

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2006年第1期25卷 79-83页

作者： MENG Bo tan xiaoyao ZHANG Baoyan YANG Naitao College of Chemical Engineering and Technology Shandong University of Technology Zibo 255049 China College of Science Northeastern University Shenyang 110004 China

Nanosized SrCe0.95Y0.05O3-δ powders with homogeneous composition were synthesized by the low temperature combustion process based on the Pechini method. A polymeric precursor sol was formed by using citric acid and ethylene glycol as the chelating agents of metal ions. The perovskite-type SrCe0.95Y0.05O3-δpowders with uniform shape and smaller than 25 nm in size were obtained through the combustion of the polymeric precursor sol at the existence of nitric acid and ammonium hydroxide. It was found that modulating the quantifies of nitric acid and ammonium hydroxide could control the particle size, and the quantities of residue carbonate ions were also affected by the quantifies of citric acid and ethylene glycol.

关键词： inorganic nonmetal material perovskite-type oxides SrCe0.95Y0.05O3-δ combustion synthesis

Preparation of electrolyte membranes for micro tubular solid oxide fuel cells

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2008年第9期51卷 808-812页

作者： tan xiaoyao YIN WeiNing MENG Bo MENG XiuXia YANG NaiTao MA ZiFeng School of Chemical Engineering Shandong University of TechnologyZibo 255049China Department of Chemical Engineering Shanghai Jiaotong UniversityShanghai 200240China

Yttria-stabilized zirconia (YSZ) micro tubular electrolyte membranes for solid oxide fuel cells (SOFCs) were prepared via the combined wet phase inversion and sintering technique. The as-derived YSZ mi- cro tubes consist of a thin dense skin layer and a thick porous layer that can serve as the electrode of fuel cells. The dense and the porous electrolyte layers have the thickness of 3-5 μm and 70-90 μm, respectively, while the inner surface porosity of the porous layer is higher than 28.1%. The two layers are perfectly integrated together to preclude the crack or flake of electrolyte film from the electrode. The presented method possesses distinct advantages such as technological simplicity, low cost and high reliability, and thus provides a new route for the preparation of micro tubular SOFCs.

关键词： solid oxide fuel cell micro tube yttrium stabilized zirconia (YSZ) phase inversion