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Reclamation of CO_(2) sodium silicate used sands by steam leaching

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China Foundry 2023年第6期20卷 537-544页

作者： Ji-jun Lu Wei He Lei Yang hua-fang Wang School of Mechanical Engineering and Automation Wuhan Textile UniversityWuhan 430200China

The bond film on the surface of the CO_(2) sodium silicate used sands is not easy to decompose,therefore,it is difficult to reclaim used sands.A new reclamation method of CO_(2) sodium silicate used sands was developed by steam leaching,which can reduce the water consumption of reclamation and improve the removal effect of sodium silicate bond ***,the leaching effect of the sodium silicate sands after 20/200/400/600/800/1,000℃ heat preservation treatment was ***,the influence of the leaching time on the removal effect of the sodium silicate bond film was ***,the casting properties of the reclaimed sands after the leaching reclamation treatment were *** results show for simulated used sands after 30 min of steam leaching,the removal ratio of the alkali exceeds 84.1%,the removal ratio of silicate is 86.2%,and the removal ratio of carbonate is 93.6%.The removal rate of alkali,silicate and carbonate is relatively low in the leaching time of 30-50 *** the reclamation effect and cost,the leaching time is controlled in 30 *** consumption is only 60%of the mass of used sands for 30 min steam leaching,while it is 200%for wet *** analysis shows that most of the hazardous substances in the used sands are removed in 30 min steam leaching,and the reclaimed sands surface after steam leaching in 50 min is as smooth as new *** 30 min of steam leaching,the alkali removal effect of the factory used sands can reach 81.5%,the water consumption by the steam leaching reclamation is 58%of the mass of the used sand,which is similar to the result of simulated used *** performance of reclaimed sands obtained after 30 min steam leaching is better than that of new sands when the amount of sodium silicate added is 6%of the mass of the reclaimed sands and the CO_(2) blowing time is 15 s:the 24 h ultimate compressive strength of reclaimed sands is 5.6 MPa(equated with new sands),and the collapsibil

关键词： sodium silicate sands steam leaching simulated temperature reclamation

Enhancement of effect of risperidone on cognitive function of schizophrenic mice by fluoxetine

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上海交通大学学报（医学版） 2015年第10期35卷 1436-1442页

作者： QIAO Ying ZHANG Lei HE Shen SHENG Jian-hua WANG Hui-fang LI hua-fang Shanghai Mental Health Center Shanghai Jiao Tong University School of Medicine Shanghai 200030 China Basic MedicineFaculty of Shanghai Jiao Tong University Shanghai 200025 China

Objective To explore the molecular mechanism of enhancing the effect of risperidone on the cognitive function of schizophrenic mice by fluoxetine. Methods Schizophrenic mice were injected with M K-801 and drugs( fluoxetine and / or risperidone) were adm inistrated orally 30 min before the injection of M *** of the control group adm inistrated the same dose of norm al saline. The cognitive function, distance of activity, and stereotyped behavior of mice were observed. The expressions of key param eters of MEK / ERK pathway in hippocam pus were detected by Western blotting or real-time qPCR. The participation of MEK / ERK pathway in isolated hippocam palneuron injuries induced by M K-801 mediation was also analyzed. Results The mice of M K-801 group showed prolonged activity distance, increased stereotyped behavior scores, and cognitive im pairm ent. Expressions of pMEK/MEK, pERK/ERK1 /2, MMP2 /9, and TIMP1 /2 of the MK-801 group increased. The aforem entioned proteins of drug adm inistration groups decreased dram atically. For schizophrenic m ice, fluoxetine enhanced effects of risperidone in norm alizing abnorm al behaviors, affecting cognitive function, and unusual protein expressions( P < 0. 05). Results of in vitro experim ents were sim ilar to those of in vivo experim ents. Conclusion Fluoxetine enhances the anti-schizophrenic effect of risperidone by norm alizing the activated MEK / ERK signaling pathway.

关键词： schizophrenia cognitive dysfunction MK-801 MEK/ERK pathway matrix metaUoproteinase conncxins

Preparation of PVA/GO/h-BN Janus Film with High Thermal Conductivity and Excellent Flexibility via a Density Deposition Self-assembly Method

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Chinese Journal of Polymer Science 2024年第8期42卷 1217-1226页

作者： fang-hua Luo Zhi-Tao Dong Guo-hua Chen Chen Ma huai-Yuan Wang College of Chemistry and Chemical Engineering Northeast Petroleum UniversityDaqing 163318China College of Materials Science and Engineering Huaqiao UniversityXiamen 361000China School of Chemical Engineering and Technology and State Key Laboratory for Chemical Engineering Tianjin UniversityTianjin 300350China

Janus films with asymmetric physical/chemical properties have attracted con siderable attention due to their promising applications in personal thermal management,electronic skin s,sensors,actuators,***,traditional methods for fabricating Janus films conventionally need the assistance of an interface or auxiliary equipment,which are usually complex and ***,flexible poly(vinyl alcohol)(PVA)/graphene oxide(GO)/h-BN(recorded as PVA/GO/h-BN)Janus films with thermally,optically,and electrically anisotropic properties are fabricated by a simple density deposition self-assem bly method,which just utilizes the density difference between GO and h-BN during water *** results show that the two sides of the acquired Janus films have obvious asymmetric *** the original state of the PVA/GO/h-BN Janus films,the thermal conductivity of the GO side(10.06 W·m^(-1)·K^(-1))is generally lower than that of the h-BN side(10.48W·m^(-1)·K^(-1)).But after GO is reduced,the thermal conductivity of the rGO side reaches 12.17 W·m^(-1)·K^(-1),surpassing that of the h-BN *** addition,the relative reflectance of the h-BN side of Janus film is also significantly higher than that of the rGO side,and the su rface resistance difference between the two sides is about 4 orders of *** prepared PVA/GO/h-BN Janus films show great application potential in human thermal management,light conversion switches,and electronic *** study provides a simple and versatile strategy for fabricating Janus films with multifunctional(such as thermal,optical,and electrical)anisotropies.

关键词： Janus films PVA/GO/h-BN Density deposition self-assembly method

Fabrication and Visible Light Photocatalytic Activity of Co-doped ZnO Nanorods

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Chemical Research in Chinese Universities 2013年第6期29卷 1032-1035页

作者： LI Xue LI Jin-hua LI Shi-jun fang Xuan fang fang CHU Xue-ying WANG Xiao-hua HUJia-xin College of Information Technology Jilin Agriculture University Changchun 130118 P.R.China School of Science Changchun University of Science and Technology Changchun 130022 P.R.China

Co-doped ZnO nanorods were prepared by electrochemical deposition method in aqueous solution. lb study the as-grown samples, several characterizations were carried out. The scanning electron microscopy（SEM） images show that the samples present a rod-like shape with hexagonal cross sections and roughened surthce. There is a slight shift for （002） diffraction peak of Co-doped ZnO nanorods in XRD because Co2~ ions entered into the ZnO lattice. Energy-dispersive X-ray spectroscopy（EDS） and X-ray photoelectron spectroscopy（XPS） results also show the exist of Co in the sample. Photoluminescence（PL） spectra of the samples were observed at room tempera- ture, the UV emission of Co-doped ZnO shows a slight red shift compared with that of undoped ZnO. Thus, we can reach the conclusion that Zn2＋ ions have been substituted by Co2. ions in the ZnO samples. In addition, photocatalysis property of Co-doped ZnO nanorods was investigated under the irradiation of visible light. It was found that the degradation rate of methyl orange is increased greatly nanorods. by Co-doped ZnO nanorods in comparison to undoped ZnO

关键词： Co-doped ZnO Nanorod Electrochcmical deposition Visible light Photocatalysis

Bis(7)-tacrine protects retinal ganglion cells against excitotoxicity via NMDA receptor inhibition

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International Journal of Ophthalmology(English edition) 2011年第2期4卷 125-130页

作者： Zu-Hai Zhang, Jia-hua fang Department of Ophthalmology the First Hospital of Jingzhou Yangtze University Jingzhou 434000 Hubei Province China Wuhan Institute of Neuroscience & Drug Research Jianghan University Wuhan 430056 Hubei Province China Department of Ophthalmology Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430022 Hubei Province China

AIM: To investigate whether bis (7)-tacrine, a multifunctional drug, inhibits N-methyl-D-aspartate (NMDA) -activated current in retinal ganglion cells (RGC) and provides neuroprotection against retinal cell damage. METHODS: Purified RGC cultures were obtained from retinas of 1-3 days old Sprague-Dawley (SD) rats, following a two-step immunopanning procedure. After 7 days of cultivation, the inhibition of NMDA-activated current by bis(7) -tacrine was measured by using patch-clamp recording techniques. In animal experiments, RGCs were damaged after intravitreal injection of NMDA (5 mu L, 40nmol) in adult rats. Bis (7)-tacrine(0.05, 0.1, 0.2mg/kg) or memantine(20mg/kg) was intraperitoneal administered to the rats fifteen minutes before intravitreally injection of NMDA. RGC damage was analyzed by histologic techniques, TUNEL and retrograde labeling techniques. RESULTS: Whole-cell patch-clamp recordings demonstrated that NMDA (30 mu mol/L) resulted in approximately -50 pA inward currents that were blocked by bis (7)-tacrine (1 mu mol/L). Histological examination and retrograde labeling analysis revealed that bis (7)-tacrine induced a significant neuroprotective effect against NMDA-induced cell damage 7 days after NMDA injection. TUNEL staining showed that pretreatment with bis(7)-tacrine was effective in ameliorating NMDA-induced apoptotic cell loss in the retinal ganglion cell layer 18 hours after injection. CONCLUSION: Bis (7)-tacrine possesses remarkable neuroprotective activities against retinal excitotoxicity through inhibition of NMDA receptors.

关键词： bis(7)-tacrine N-methyl-D-aspartate receptors excitotoxicity neuroprotection

Probabilistic Robust Linear Parameter-varying Control of a Small Helicopter Using Iterative Scenario Approach

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IEEE/CAA Journal of Automatica Sinica 2015年第1期2卷 85-93页

作者： Zhou fang hua Tian ping Li the School of Aeronautics and Astronautics Zhejiang University the Department of Control Science and Engineering Zhejiang University

In this paper, we present an iterative scenario approach (ISA) to design robust controllers for complex linear parameter-varying (LPV) systems with uncertainties. The robust controller synthesis problem is transformed to a scenario design problem, with the scenarios generated by identically extracting random samples on both uncertainty parameters and scheduling parameters. An iterative scheme based on the maximum volume ellipsoid cutting-plane method is used to solve the problem. Heuristic logic based on relevance ratio ranking is used to prune the redundant constraints, and thus, to improve the numerical stability of the algorithm. And further, a batching technique is presented to remarkably enhance the computational efficiency. The proposed method is applied to design an output-feedback controller for a small helicopter. Multiple uncertain physical parameters are considered, and simulation studies show that the closed-loop performance is quite good in both aspects of model tracking and dynamic decoupling. For robust LPV control problems, the proposed method is more computationally efficient than the popular stochastic ellipsoid methods. © 2014 Chinese Association of Automation.

关键词： Aircraft control Algorithms Computation theory Computational efficiency Controllers Design Helicopters Optimization Problem solving Robust control Scheduling Stochastic systems Uncertainty analysis

Papers featured in the World Journal of Gastroenterology from 2006 to 2007

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World Journal of Gastroenterology 2009年第35期15卷 4471-4475页

作者： hua Yang Jing-Hai Zhang fang Zhang Library ofShengjing Hospital China Medical University Shenyang110004 Liaoning Province China

AIM:To analyze papers published in the World Journal of Gastroenterology(WJG)from 2006 to *** investigated the highly cited papers for geographic distribution of the cited authors,as well as the distribution of the citing journals and year of citation. METHODS:Papers published in WJG from 2006 to 2007 and their citations were retrieved from the Science Citation Index Expanded(SCIE).The papers and their citations were analyzed according to bibliometric methods,including the number of citations for a given paper,the distribution of the highly cited papers,the geographic distribution of the cited authors,and the years of citation. RESULTS:Two thousand five hundred and six papers published in WJG from 2006 to 2007 were collected through SCIE,and 2335 of these were categorized as articles,reviews or *** 2006 and 2007, the average citation rate was 85.08%and 70.48%, respectively,and the average number of citations per paper was 4.33 and *** the 2506 papers, 1963 were cited 8788 times by other *** mean number of citations per paper was *** papers with over three citations accounted for 54.72% of all those that were cited,and the total number of citations accounted for 85.38%of the total of 8788 *** papers were cited over 30 times and the highest number of citations for any one paper was *** cited authors came from 70 differentcountries or regions,with China,Japan and the United States being the most *** highest average citation rate and number of citations per paper were for authors from Canada(96.30%,6.89),Hungary (92.31%,5.62),Australia(88.46%,5.46),Germany (87.04%,5.33),and Spain(87.50%,5.11).The impact factor was 2.081 and the self-citation rate was 9.41% in *** papers published in WJG in 2006-2007 were cited by 1597 ***:The papers in WJG have a high number of citations,and have been cited in numerous journals by authors from various *** results imply that WJG has an influenti

关键词： Citation analysis Bibliometrics World Journal of Gastroenterology

Multi-lens stereo reconstruction of wave surface in a wave basin

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Journal of Hydrodynamics 2019年第5期31卷 1069-1072页

作者： Qian Wang Yong-liu fang hua Liu Department of Engineering Mechanics Shanghai Jiao Tong UniversityShanghai 200240China Key Laboratory of Hydrodynamics(MOE) Shanghai Jiao Tong UniversityShanghai 200240China

A new method is developed to measure the wave surface elevation in a wave basin.A thin film of tiny granules floating on the free surface ensures the formation of the dot grid pattern on the wave *** dot grid pattern is generated by a high-brightness *** granule film has little influence on the wave propagation in a wave *** measuring system is validated by the experiments of the propagation of solitary wave in water of uniform *** turns out that the time series of the surface elevation measured by the multi-lens stereo reconstruction method agree well with that measured by wave *** errors of the measuring system are *** work sheds a light on measuring the local wave field with high precision and efficiency in laboratory.

关键词： Free surface deformation solitary wave image processing stereo reconstruction

Membrane Transporters for Nitrogen,Phosphate and Potassium Uptake in Plants

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Journal of Integrative Plant Biology 2008年第7期50卷 835-848页

作者： Yi-fang Chen Yi Wang Wei-hua Wu State Key Laboratory of Plant Physiology and Biochemistry College of Biological Sciences China Agricultural University National Plant Gene Research Centre Beijing 100094 China

Nitrogen, phosphorous and potassium are essential nutrients for plant growth and development. However, their contents in soils are limited so that crop production needs to invest a lot for fertilizer supply. To explore the genetic potentialities of crops （or plants） for their nutrient utilization efficiency has been an important research task for many years, in fact, a number of evidences have revealed that plants, during their evolution, have developed many morphological, physiological, biochemical and molecular adaptation mechanisms for acquiring nitrate, phosphate and potassium under stress conditions. Recent discoveries of many transporters and channels for nitrate, phosphate and potassium uptake have opened up opportunities to study the molecular regulatory mechanisms for acquisition of these nutrients. This review aims to briefly discuss the genes and gene families for these transporters and channels, in addition, the functions and regulation of some important transporters and channels are particularly emphasized.

关键词： Arabidopsis channel nitrate potassium phosphate transporter.