检索结果-南通市图书馆

Sludge reduction with Tubificidae and the impact on the performance of the wastewater treatment process

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2007年第3期19卷 257-263页

作者： GUO xue-song liu jun-xin WEI Yuan-song LI Lin Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China

To reduce excess sludge, a Tubificidae reactor was combined with an integrated oxidation ditch with vertical circle （IODVC）, and a new integrated system was developed for wastewater treatment, A pilot-scale of this integrated system was tested to investigate the sludge reduction with Tubificidae and the impact on effluent quality and sludge production. The dominant worm was Branchnria Sowerbyi in the Tubificidae reactor after inoculation of Branchnria Sowerbyi and Limnodrilns sp., and the maximal volume density of wet Tubificidae in vessels of the Tubificidae reactor was 17600 g/m^3. Two operational modes, treating the excess sludge （first mode） and the returned sludge （second mode） of IODVC by the Tubificidae reactor, were used in this experiment. The results showed that the excess sludge reduction rate was 46.4% in the first mode, and the average sludge yield of the integrated system was 6.19× 10^-5 kg SS/kg COD in the second mode. Though the sludge returned to IODVC via the Tubificidae reactor, it had little impact on the effluent quality and the sludge characteristics of the IODVC. No new type of recalcitrant substance in the supernatant was discharged into the environment when the sludge was treated by Tubificidae. The experimental results also indicated that no significant changes occurred on the viscosity, specific resistance, and the floc size distribution of the sludge.

关键词： integrated wastewater treatment system sludge reduction wastewater treatment Tubificidae

Monolith free-standing plasmonic PAN/Ag/AgX(X = Br, I)nanofiber mat as easily recoverable visible-light-driven photocatalyst

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2019年第5期38卷 361-368页

作者： Meng-Mo Ping Shu-jun Qiu Gui-Juan Wei jun-xue liu Zhao-Jie Wang Shu-Tao Wang Chang-Hua An Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion School of Chemistry and Chemical EngineeringTianjin University of TechnologyTianjin 300384China School of Materials Science and Engineering China University of PetroleumQingdao 266580China

Most efficient visible-light-responsive photocatalysts are in the form of powder,leading to the tedious separation from the reaction ***,we developed a versatile method for the general synthesis of free-standing polyacrylonitrile(PAN)/Ag/AgX(X=Br,I)nanofiber mats,where fibrous PAN/Ag precursor was firstly prepared via an electroless plating strategy,followed by a direct elemental halogenation with Br2/H2O or I2/ethanol *** as-obtained PAN/Ag/AgX nanofiber mats exhibit exceptional photocatalytic activity toward degradation of organic ***,the flexibility enables it to be easily recovered after the reaction was *** work provides new insights into the fabrication of membrane-based photocatalysts on a large scale.

关键词： Free-standing PAN/Ag/AgX(X = Br,Ⅰ) Nanofiber Photocatalysts

Synthesis of 1-[(O,O-diphenyl phosphonyl)arylmethyleneamino carbonylmethyl]uracils

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 1999年第9期10卷 739-740页

作者： xue jun liu Guo Chen CHI Ru Yu CHEN(Institute and National Key Laboratory of Elemento-Organic Chemistry, Nankai UniversityTianjin 300071) Nankai Univ Inst Elementoorgan Chem Tianjin 300071 Peoples R China Nankai Univ Natl Key Lab Elementoorgan Chem Tianjin 300071 Peoples R China

A new series of compounds, 1-[(O,O-diphenyl phosphonyl)arylmethylene aminocarbonylmethyl]uracils, were synthesized in yield of 54.6-72.0% with DCC/BtOH as the coupling reagent, and their biological activities are bein... 详细信息

关键词： uracil alpha-aminophosphonic acid

Targeting cholesterol trafficking to mitigate axonal degeneration in hereditary spastic paraplegia

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第5期20卷 1397-1398页

作者： Zhenyu Chen xue-jun Li Department of Biomedical Sciences University of Illinois College of Medicine RockfordRockfordILUSA Department of Bioengineering University of Illinois at ChicagoChicagoILUSA

Axonal degeneration underlies many debilitating diseases including hereditary spastic paraplegia(HSP),a genetically and clinically diverse group of disorders characterized by spasticity and weakness of the lower *** is one significant cause of chronic neurodisability due to the lack of effective treatments and a wide range of onset ages from early childhood to 70 years.

关键词： degeneration diseases hereditary

Accelerated Interfacial Charge Transfer in Br-Gradient MAPbI_(3-x)Br_(x) Perovskite Thin Films

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Physics 2021年第5期34卷 613-620,I0003页

作者： Ye-jun Xiao jun-xue liu Jing Leng Bo-ning Wu Shengye Jin State Key Laboratory of Molecular Reaction Dynamics and Collaborative Innovation Center of Chemistry for Energy Materials(iChEM) Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China

Mixed halide perovskites(MHPs)are a class of semiconductor materials with great promise for many optoelectronic applications due to their outstanding photophysical *** and tailoring the photogenerated carrier dynamics is essential for further improvement of perovskite ***,we report a study about the carrier transport and interfacial charge transfer dynamics in Br-gradient MAPbI_(3-x)Br_(x) perovskite thin films prepared by surface ion-exchange *** by the bandgap gradient in MAPbI_(3-x)Br_(x) films,the accelerated internal hole transport and enhanced interfacial extraction efficiency were both ***,the interfacial electron transfer was also found to be evidently facilitated due to the surface modification during *** findings suggest the possibility of simultaneous acceleration of interfacial electron and hole transfer processes in halide perovskite films via surface post-treatment technique,which is of great importance in further improving the power conversion efficiency of perovskite solar cells.

关键词： Perovskite Charge transfer Halogen gradient Surface treatment

Posterior gut development in Drosophila:a model system for identifying genes controlling epithelial morphogenesis

在线全文

学校读者我要写书评

暂无评论

Cell Research 1998年第4期8卷 273-284页

作者： LENGYEL JUDITH A xue jun liu (Department of Molecular, Cell and Developmental Biology University of California at Los Angeles, Los Angeles, CA USA, 90095-1606 USA) Department of Molecular Cell and Developmental Biology University of California at Los Angeles Los Angeles CA USA 90095-1606 USA

The posterior gut of the Drosophila embryo, consisting of hindgut and Malpighian tubules, provides a simple,well-defined system where it is possible to use a genetic approach to define components essential for epithelial *** review here the advantages of Drosophila as a model genetic organism, the morphogenesis of the epithelial structures of the posterior gut, and what is known about the genetic requirements to form these *** overview, primordia are patterned by expression of hierarchies of transcription factors; this leads to localized expression of cell signaling molecules, and finally, to the least understood step: modulation of cell adhesion and cell shape. We describe approaches to identify additional genes that are required for morphogenesis of these simple epithelia, particularly those that might play a structural role by affecting cell adhesion and cell shape.

关键词： Organogenesis cell rearrangement convergent extension hindgut Malpighian tubule

Pathogenesis of acute lung injury in rats with severe acute pancreatitis

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Hepatobiliary & Pancreatic Diseases International 2005年第4期4卷 614-617页

作者： xue-Min liu, jun Xu and Zi-Fa Wang Department of Hepatobiliary Surgery, First Hospital, Xi’an Jiaotong University, Xi’an 710061 , China Department of Hepatobiliary Surgery First Hospital Xi'an Jiaotong University Xi'an 710061 China. a1090224@***

BACKGROUND: Acute lung injury (ALI) is the most common and severe complication of severe acute pancreatitis (SAP). The elucidation of the mechanism of ALI contributes to the diagnosis and treatment of the illness. In this study, we studied the pathogenesis of ALI in rats with severe acute pancreatitis. METHODS: The rats were sacrificed at 1, 3, 5, 6, 9 and 12 hours after the establishment of the model of SAP. Pancreas and lung tissues were obtained for pathological study, and examination of microvascular permeability and myeloperoxidase (MPO) examination. The gene expressions of tumor necrosis factor-α (TNF-α) and intercellular adhesion molecule-1 (ICAM-1) in the pancreas and lung tissues were detected by reverse transcriptase-polymerase chain reaction (RT-PCR). RESULTS: After the establishment of the SAP model, the degree of pancreatic and lung injury increased gradually along with the gradual increase of MPO activity and micro-vascular permeability. Gene expressions of TNF-α and ICAM-1 in the pancreas rose at 1 hour and peaked at 7 hours. In contrast, their gene expression in the lungs rose slightly at 1 hour and peaked at 9-12 hours. CONCLUSION: An obvious time window existed between SAP and lung injury, which is beneficial to the early prevention of the development of ALI.

关键词： pathogenesis severe acute pancreatitis acute lung injury

Effects of Lanerkang-A on Immune Efficacy of PRRS Vaccines and Growth Performance Indicators of Piglets

在线全文

学校读者我要写书评

暂无评论

Animal Husbandry and Feed Science 2010年第4期2卷 32-33,35页

作者： LI xue-hua liu jun-wei GUO Yan-feng CUI Jin-zhong College of Animal Science Henan Institute of Science and Technology Xinxiang 453003 China

[ Objective] To study the effects of Lanerkang-A on the immunity and growth performance of piglets and lay a base for the development of green medicine on immunity stimulator, [ Method] A total of 50 healthy piglets were randomly divided into two groups, the control group （Group 1 ） and the test group （Group 2）, 25 piglets in each group. All the piglets were intramuscularly injected with 2 ml porcine reproductive and respiratory syndrome （PRRS） propolis inactivated vaccine at 25 days old. The piglets in the Group 2 were fed with feed containing Lanerkang-A （ 10 ml/kg） at 42 days old. After 7-d feeding, the antibody titer against PRRSV and the cytoimmunity were detected using ELISA and E-rosette, respectively. [ Result] Lanerkang-A increased antibody titer against PRRSV by 4 titers and increased E-rosette forming rate by 7%. The average daily weight gain increased by 15.68%. [ Conclusion] Lanerkang-A can greatly enhance the immunological function of body, increase the daily gain of piglets, as well as improve their growth performance.

关键词： Piglets PRRS vaccines Immune efficacy Growth performance

锂离子电池硅/碳纳米管/石墨烯自支撑负极材料研究

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

无机材料学报 2017年第7期32卷 705-712页

作者：白雪君刘婵侯敏王彪曹辉付俊杰上海航天电源技术有限责任公司上海201615 东华大学材料科学与工程学院上海201620 上海空间电源研究所上海201216 中石化海洋石油工程有限公司上海物探分公司上海201208

通过真空驱动自组装法及蒸汽处理得到结构疏松的硅/碳纳米管/石墨烯自支撑负极材料(Si/CNTs/GP)。纳米硅颗粒(50 nm)为活性物质,均匀分布在石墨烯片层结构中间;石墨烯作为碳基体,通过自组装构筑形成二维导电网络;碳纳米管(CNTs)具有超... 详细信息

通过真空驱动自组装法及蒸汽处理得到结构疏松的硅/碳纳米管/石墨烯自支撑负极材料(Si/CNTs/GP)。纳米硅颗粒(50 nm)为活性物质,均匀分布在石墨烯片层结构中间;石墨烯作为碳基体,通过自组装构筑形成二维导电网络;碳纳米管(CNTs)具有超高导电性和良好的力学强度,它通过吸附作用均匀分布在石墨烯基体上形成导电的支撑网络结构。经过蒸汽处理后,石墨烯层间距明显增大,层与层之间不再是紧密堆叠的结构,而是形成一种疏松、褶皱、内部空隙丰富的片层结构。Si/CNTs/GP负极材料中丰富的内部空穴和贯穿孔洞,提供了材料很高的比表面积,能有效提高电解液对材料的浸润性,极大缩短了离子传输距离。同时这些内部空穴也有效缓冲硅充放电时的体积膨胀,提高了材料的结构稳定性和电化学性能。该负极材料在4 A/g的大电流密度下容量维持在600 mAh/g,表现出良好的大电流循环稳定性能。

关键词：石墨烯硅锂离子电池自支撑蒸汽处理