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Chinese Journal of Chemical Engineering 2024年第4期68卷 27-34页

作者： xi quan Jun Zhang Linlin Yin Wei Zuo Yu Tian State Key Laboratory of Urban Water Resource and Environment(SKLUWRE) School of EnvironmentHarbin Institute of TechnologyHarbin 150090China

In this work,a novel composite material based on β-cyclodextrin-immobilized sodium alginate aerogel(β-CD/NaAlg) was developed utilizing cross-linker of epichlorohydrin and applied as an adsorbent to remove tetracycline antibiotics from reclaimed wastewater.A series of characterizations were utilized to confirm the successful synthesis of the adsorbent and this β-CD/NaAlg presented a three-dimensional network at the nanoscale or *** optimal conditions(pH=4,t=8 h,β-CD:NaAlg=9,adsorbent dosage = 1.5 g·L-1),the maximum removal rate of β-CD/NaAlg to tetracycline was 70%.The adsorption behavior of tetracycline on β-CD/NaAlg conformed to the Freundlich isotherm model(R2=0.9977) and the pseudo-second-order kinetic model(R^(2)=0.9993).Moreover,the adsorbent still removed 55.3% of tetracycline after five ***,the adsorbent was integrated with ultrafiltration to adsorb tetracycline antibiotics from simulated reclaimed wastewater,and the removal rate of tetracycline reached 78.9% within 2 *** existence of Cr(Ⅵ) had a negligible impact on tetracycline removal,while the presence of humic acid exhibited a promoting *** possible adsorption mechanisms were also elucidated through X-ray photoelectron spectroscopy and density functional theory *** summary,β-CD/NaAlg represents an environmentally friendly,efficient,and sustainable adsorbent for removing tetracycline antibiotics from reclaimed water.

关键词： b-CD/NaAlg aerogel Covalent grafting Tetracycline antibiotics Ultrafiltration Selective adsorption Reclaimed water

Formation of the Fertilization Pore during Oogenesis of the Fern Ceratopteris thalictroides

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Journal of Integrative Plant Biology 2010年第6期52卷 518-527页

作者： Jian-Guo Cao quan-xi Wang Wen-Mei Bao College of Life and Environment Sciences Shanghai Normal University Shanghai 200234 China

The development of the fertilization pore during oogenesis of the fern Ceratopteris thalictroides was followed using transmission electron microscopy. The newly formed egg is appressed closely to the adjacent cells. There are well-developed plasmodesmata between the egg and the ventral canal cell, but none between the egg and the jacket cells of the archegonium. During maturation, a separation cavity is formed around the egg. However, a pore region persistently connects the egg and the ventral canal cell. The extra egg membrane is formed by deposition of sheets of endoplasmic reticulum （ER）, but no ER is deposited on the inner surface of the pore region. Thus, a fertilization pore, covered by a layer of plasmalemma, is formed. The ventral canal cell undoubtedly participates the formation of the fertilization pore, probably by absorbing the sheets of ER beneath the pore region. The functional significance of the ventral canal cell in formation of the fertilization pore is discussed. The features of the mature egg include that abundant concentric membranes and osmiophilic vesicles occur in the cytoplasm of the mature egg. The initial, round nucleus of the egg eventually becomes cup-shaped. This investigation gives some new insights about the cells participating oogenesis in ferns.

关键词： FERTILIZATION of plants OOGENESIS CERATOPTERIS thalictroides TRANSMISSION electron microscopy PLASMODESMATA ENDOPLASMIC reticulum CELL membranes CELL interaction (Biology)

Ultrastructure of the Mature Egg and Fertilization in the Fern Ceratopteris thalictroides

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Journal of Integrative Plant Biology 2009年第3期51卷 243-250页

作者： Jian-Guo Cao Nai-Ying Yang quan-xi Wang College of Life and Environment Sciences Shanghai Normal University Shanghai 200234 China

The ultrastructure of the mature egg and fertilization in the fern Ceratopteris thafictroides （L.） Brongn. were observed by transmission electron microscopy. The results revealed that the mature egg possesses an obvious egg membrane at the periphery of the egg. Furthermore, a fertilization pore was identified in the upper egg membrane of the mature egg. The structure of the pore is described for the first time. The fertilization experiment indicated that spermatozoids crowd into the cavity above the egg through the neck canal of the archegonium; however, only one of these can penetrate into the egg through the fertilization pore. Immediately on penetration of the spermatozoid, the egg begins to shrink. The volume of the fertilized egg decreases to almost one-half that of the unfertilized egg. As a result, the protoplasm of the fertilized egg becomes dense and opaque, which may lead to a situation where the organelles of both the egg and the fertilizing spermatozoid become indistinguishable. Simultaneously, abundant vesicles containing concentric membranes or opaque materials appear near the fertilization pore in the cytoplasm of the fertilized egg. These vesicles are considered to act as a barrier that prevents polyspermy. The present study provides a new insight into the ultrastructure of the mature egg and the cytological mechanism of fertilization in ferns.

关键词： Ceratopteris thalictroides fern fertilization fertilization pore.

Sub-Tenon's urokinase injection-assisted vitrectomy in early treatment of suprachoroidal hemorrhage: Four cases report

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World Journal of Clinical Cases 2018年第15期6卷 1059-1066页

作者： Fang Chai Hua Ai Jin Deng xi-quan Zhao xi'an No.4 Hospital Shaanxi Ophthalmic Medical Center Affiliated Guangren Hospital School of Medicine Xi'an Jiaotong University

BACKGROUND Suprachoroidal hemorrhage(SCH) is a rare but potentially catastrophic ocular event. Surgery for SCH is often challenging because of the difficulty in resolving the retinal and choroidal detachment. Here, we describe a novel surgical technique in which urokinase is administered by sub-Tenon's injection to target an organized clot in SCH prior to *** SUMMARY A consecutive case series of four eyes with serous and hemorrhagic choroidal detachments secondary to cataract surgery or trauma was documented to evaluate the feasibility of using a sub-Tenon's urokinase injection-assisted 23-gauge and 20-gauge incision to drain choroidal detachments. Urokinase(2000 IU) was given by sub-Tenon's injection one day before surgery for clot liquefaction. A 23-gauge infusion line was placed in the anterior chamber. A 20-gauge incision was created in the suprachoroidal space 3.5 mm from the limbus. After drainage, pars plana vitrectomy was performed because of concomitant pathology that demanded this additional procedure. Visual acuity, ocular findings, the timing of surgical interventions, surgical procedures, and outcomes were retrospectively reviewed in four patients. Postoperative follow-up of the patients ranged from 6 to 24 mo(mean, 13 mo). After the treatment, all patients achieved excellent anatomical recovery. CONCLUSION Sub-Tenon's urokinase injection-assisted vitrectomy makes clot liquefaction happen in the early treatment stage, resulting in marked stability during the procedure.

关键词： Urokinase Suprachoroidal hemorrhage Choroidal detachments Vitrectomy Case report

Cytological Events during Zygote Formation of the Fern Ceratopteris thalictroides

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Journal of Integrative Plant Biology 2010年第3期52卷 254-264页

作者： Jian-Guo Cao quan-xi Wang Nai-Ying Yang Wen-Mei Bao College of Life and Environment Science Shanghai Normal University Shanghai 200234 China

The cytological events, including nuclear fusion, digestion of male organelles and rebuilding of the plasmalemma and cell wall, during zygote formation of the fern Ceratopteris thalictroides （L.） Brongn. are described based on the observations of transmission electron microscopy. When the spermatozoid enters the egg and contacts the cytoplasm, the male chromatin relaxes continually. The microtubular ribbon （MTr） is separated from the male nucleus and then an envelope reappears around the male nucleus. During nuclear fusion, the egg nucleus becomes highly irregular and extends some nuclear protrusions. It is proposed that the protrusions fuse with the male nucleus actively. After nuclear fusion the irregular zygotic nucleus contracts gradually. It becomes spherical before the zygote divides. The male chromatin is identifiable as fibrous structure in the zygotic nucleus in the beginning, but it gradually becomes diffused completely. The male organelles, including the MTr, multilayered structure, flagella and the male mitochondria are finally digested in the zygotic cytoplasm. Finally a new plasmalemma and cell wall are formed outside the protoplast. The organelles in the zygote are rearranged, which produces a horizontal polarity zygote. The zygote divides with an oblique-vertical cell plate facing the apical notch of the gametophyte.

关键词： EMBRYOLOGY FERNS CERATOPTERIS thalictroides MALE reproductive organs CHROMATIN FLAGELLA (Microbiology) PLANT reproduction

A spherical parameterization approach based on symmetry analysis of triangular meshes

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2009年第7期10卷 1009-1017页

作者： Jian-ping HU xiu-ping LIU Zhi-xun SU xi-quan SHI Feng-shan LIU School of Mathematical Sciences Dalian University of Technology Dalian 116024 China Department of Applied Mathematics and Theoretical Physics Delaware State University Dover DE 19901 USA

We present an efficient spherical parameterization approach aimed at simultaneously reducing area and angle dis-tortions. We generate the final spherical mapping by independently establishing two hemisphere parameterizations. The essence of the approach is to reduce spherical parameterization to a planar problem using symmetry analysis of 3D meshes. Experiments and comparisons were undertaken with various non-trivial 3D models, which revealed that our approach is efficient and robust. In particular, our method produces almost isometric parameterizations for the objects close to the sphere.

关键词： Triangular mesh Spherical parameterization Symmetry analysis

Effects of Clouds and Aerosols on Surface Radiation Budget Inferred from DOE AMF at Shouxian,China

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Atmospheric and Oceanic Science Letters 2013年第1期6卷 39-43页

作者： QIU Yu-Jun DONG xi-quan xi Bai-Ke WANG Zhen-Hui Key Laboratory of Meteorological Disaster of Ministry of Education(KLME) Nanjing University of Information Science & Technology(NUIST) School of Atmospheric Physics NUIST Global Change and Earth System Science(GCESS) Beijing Normal University Department of Atmospheric Sciences University of North DakotaGrand ForksNorth DakotaUSA

Based on data collected during the first U.S. Department of Energy （DOE） Atmospheric Radiation Measurement （ARM） field campaigns at Shouxian, east- ern China in 2008, the effects of clouds and aerosols on the surface radiation budget during the period Octo- ber-December 2008 were studied. The results revealed that the largest longwave （LW）, shortwave （SW）, and net Aerosol Radiative Effects （AREs） are 12.7, -37.6, and -24.9 W rn-2, indicating that aerosols have LW warming impact, a strong SW cooling effect, and a net cooling ef- fect on the surface radiation budget at Shouxian during the study period 15 October-15 December 2008. The SW cloud radiative forcing （CRF） is -135.1 W m-2, much cooler than ARE （about 3.6 times）, however, the LW CRF is 43.6 W m 2, much warmer than ARE, and resulting in a net CRF of-91.5 W m-2, about 3.7 times of net ARE. These results suggest that the clouds have much stronger LW warming effect and SW cooling effect on the surface radiation budget than AREs. The net surface radiation budget is dominated by SW cooling effect for both ARE and CRE. Furthermore, the precipitatable clouds （PCs） have the largest SW cooling effect and LW warming ef- fect, while optically thin high clouds have the smallest cooling effect and LW warming on the surface radiation budget. Comparing the two selected caseds, CloudSat cloud radar reflectivity agrees very well with the AMF （ARM Mobile Facility） WACR （W-band ARM Cloud Radar） measurements, particularly for cirrus cloud case. These result will provide a ground truth to validate the model simulations in the future.

关键词： aerosol clouds. ARE. CRF

The LB Films of Dansyl Chloride Labeled Octadecylamine and Its Fluorescence Lifetime

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Chinese Chemical Letters 2000年第10期11卷 921-924页

作者： Hai Ning CUI Guo Liang YUAN Wei LI Wen Yun WANG Shi quan xi Laboratory of Rare Earth Chemistry and Physics Changchun Institute of Applied Chemistrythe Chinese Academy of SciencesChangchun 130022 Changchun Institute of Post and Telecommunication Changchun 130012

Octadecylamine was derivatized with dansyl chloride (5-dimethylaminonaphthalene-1-sulfonyl chloride) In order to simplify and understand the LB films of fluorescent probe labeling proteins. its monolayer and multilayers in the absence and presence of stearic acid were deposited by LB technique. Fluorescence spectra and lifetimes of the fluorescent products were studied to elucidate the microenvironment of molecules in the LB films.

关键词： LB film fluorescent probe labeling fluorescent spectra and lifetime

THE ELECTROCHEMICAL BEHAVIOURS OF SOLUBLE POLYIMIDES

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Chinese Chemical Letters 1995年第2期6卷 139-140页

作者： Ying ZHU Wei xiNG Gong quan SUN Du GUO Meng xian DING Tian Hong LU Shi quan xi Laboratory or Fleclroanalylical Chemistry Changchun Institute of Applied ChemistryChinese Academy or SciencesChangchun130022

The electrochemical behaviours of three kinds of soluble polyimides were investigated for the first time. It was observed that the cyclic voltammograms(CVS) of these polyimides in nonaqueous solutions are obviously di... 详细信息

关键词：危?

Application of a Coupled Land Surface-Hydrological Model to Flood Simulation in the Huaihe River Basin of China

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Atmospheric and Oceanic Science Letters 2014年第6期7卷 493-498页

作者： LI Min LIN Zhao-Hui YANG Chuan-Guo SHAO quan-xi International Center for Climate and Environment Sciences (ICCES) Institute of Atmospheric Physics Chinese Academy of Sciences University of Chinese Academy of Sciences Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science & Technology Hohai University Commonweath Scientific and Industrial Research Organization (CSIRO) Computational Informatics

A hydrological simulation in the Huaihe River Basin(HRB) was investigated using two different models: a coupled land surface hydrological model(CLHMS), and a large-scale hydrological model(LSX-HMS). The NCEP-NCAR reanalysis dataset and observed precipitation data were used as meteorological inputs. The simulation results from both models were compared in terms of flood processes forecasting during high flow periods in the summers of 2003 and 2007, and partial high flow periods in 2000. The comparison results showed that the simulated streamflow by CLHMS model agreed well with the observations with Nash-Sutcliffe coefficients larger than 0.76, in both periods of 2000 at Lutaizi and Bengbu stations in the HRB, while the skill of the LSX-HMS model was relatively poor. The simulation results for the high flow periods in 2003 and 2007 suggested that the CLHMS model can simulate both the peak time and intensity of the hydrological processes, while the LSX-HMS model provides a delayed flood peak. These results demonstrated the importance of considering the coupling between the land surface and hydrological module in achieving better predictions for hydrological processes, and CLHMS was proven to be a promising model for future applications in flood simulation and forecasting.

关键词： coupled land surface-hydrological model flood simulation Huaihe River Basin flood detention and storage