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Alkaline phosphatase activity in the phosphorus-limited southern Chinese coastal waters

Journal of Environmental Sciences 2019年第12期31卷 38-49页

作者： wei kang Zhao-Hui Wang Lei LiuXin Guo Key and Open Laboratory of Marina and Estuary Fisheries Ministry of Agriculture of ChinaEast China Sea Fisheries Research InstituteChinese Academy of Fishery SciencesShanghai 200090China College of Life Science and Technology Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education InstitutesJinan UniversityGuangzhou 510632China

Three fractions of alkaline phosphatase activity(APA),including phytoplankton APA(phyto-APA),bacterial APA(bact-APA),and free-APA,were examined in the sea surface microlayer(SML)and the subsurface water(SSW)from Daya Bay,Guishan Island,and Guanghai Bay of southern *** between APA and environmental parameters were *** growth of phytoplankton was significantly limited by dissolved inorganic phosphorus(DIP)in the three sea areas,especially in Daya *** ranged between 1.41 and 35.26 nmol/L/hr,and the highest value was found in Daya *** increased APA in Daya Bay was the result of the increase of phytoplankton biomass and the response of phytoplankton to P ***-APA was the main contributor in Daya Bay,while phyto-and free-APA co-dominated in Guishan Island and Guanghai ***-,phyto-,and total-APA showed a significant inverse power function relationship with DIP,and 0.2μmol/L was the threshold for DIP on particulates and *** correlation analysis suggested that DIP limitation together with high N levels enhanced *** water temperature and freshwater input accelerated APA as *** component analysis clearly separated samples from the three sea areas,as well as from the SML and the SSW,which indicated the differences in environmental parameters and APA *** results highlight the influence of phosphorus limitation and environmental parameters on APA.

关键词： Alkaline phosphatase Phosphorus limitation Southern Chinese coast Phytoplankton The sea surface microlayer Daya Bay

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Optimal design of a multi-mode interference splitter based on SOI

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Optoelectronics Letters 2008年第2期4卷 92-95页

作者： SONG wei XIE kang School of Optoelectronic Information University of Electronic Science and Technology of China Chengdu 610054 China

In this paper, the multimode waveguide lengths and the output port locations of a SOI （silicon on insulator） material-based 1×4 MMI （multimode interference） optical splitter are optimized by means of FD-BPM （finite difference - beam propagation method）. An improved 1×4 MMI optical splitter is designed. Compared with an usual optical splitter, a smaller loss 0. 12dB and a better output port power uniformity 0.11dB are achieved for the optical signal transmission.

关键词：多模式干涉分路器最优设计 SOI 透射

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Precision micro-milling process:state of the art

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Advances in Manufacturing 2021年第2期9卷 173-205页

作者： Lorcan O’Toole Cheng-wei kang Feng-Zhou Fang Center of Micro/Nano Manufacturing Technology(MNMT-Dublin) University College DublinDublin 4Ireland State Key Laboratory of Precision Measuring Technology and Instruments Center of Micro/Nano Manufacturing Technology(MNMT)Tianjin UniversityTianjin 300072People’s Republic of China

Micro-milling is a precision manufacturing process with broad applications across the biomedical,electronics,aerospace,and aeronautical industries owing to its versatility,capability,economy,and efficiency in a wide range of *** particular,the micro-milling process is highly suitable for very precise and accurate machining of mold prototypes with high aspect ratios in the microdomain,as well as for rapid micro-texturing and micro-patterning,which will have great importance in the near future in bio-implant *** is particularly true for machining of typical difficult-to-machine materials commonly found in both the mold and orthopedic implant ***,inherent physical process constraints of machining arise as macromilling is scaled down to the *** leads to some physical phenomena during micromilling such as chip formation,size effect,and process *** dynamic physical process phenomena are introduced and discussed in *** is important to remember that these phenomena have multifactor effects during micro-milling,which must be taken into consideration to maximize the performance of the *** most recent research on the micro-milling process inputs is discussed in detail from a process output perspective to determine how the process as a whole can be ***,newly developed processes that combine conventional micro-milling with other technologies,which have great prospects in reducing the issues related to the physical process phenomena,are also ***,the major applications of this versatile precision machining process are discussed with important insights into how the application range may be further broadened.

关键词： Precision machining Micro-milling Size effect Deflection Runout Tool wear

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Xiaotan Sanjie decoction inhibits interleukin-8-induced metastatic potency in gastric cancer

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World Journal of Gastroenterology 2015年第5期21卷 1479-1487页

作者： Jun Shi Pin-kang wei Department of Traditional Chinese Medicine Shanghai Changzheng HospitalThe Second Military Medical University

AIM:To investigate the interaction between Xiaotan Sanjie(XTSJ) decoction and interleukin-8(IL-8) and its effect on adhesion,migration and invasion of SGC-7901 gastric cancer ***:SGC-7901 gastric cancer cells were exposed to serum containing XTSJ decoction and/orIL-8(1 ng/m L).SGC-7901 cell adhesion to fibronectin,an extracellular matrix component,was detected using the Cell Counting *** and invasion abilities of SGC-7901 cells were detected by scratch wound and Transwell chamber ***,protein(immunofluorescence and Western blot) and m RNA levels(quantitative polymerase chain reaction) of cluster of differentiation 44(CD44),a cell adhesion molecule,were measured in 72-h-cultured SGC-7901 ***:Cell adhesion was promoted by IL-8(P = 0.001),but was inhibited by XTSJ decoction(P = 0.0001).Similarly,IL-8 promoted SGC-7901 cell invasion(P = 0.003),and XTSJ decoction inhibited cell invasion(P = 0.001).IL-8 induced SGC-7901 cell migration,but this was inhibited by XTSJ ***-8 up-regulated CD44 protein(P = 0.028) and m RNA expression(P = 0.002),whereas XTSJ decoction inhibited CD44 protein expression(P = 0.0001),but not m RNA expression(P = 0.275).An interaction between XTSJ decoction and IL-8 was confirmed in the invasion(P = 0.001) and CD44 m RNA expression of SGC-7901 cells(P = 0.010),but not in cell adhesion(P = 0.051).CONCLUSION:XTSJ decoction may inhibit adhesion,migration and invasion of gastric cancer cells,which is partly associated with down-regulation of IL-8.

关键词： Xiaotan Sanjie decoction Interleukin-8 Migration A

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EXPERIMENTAL RESEARCH ON RADIATION FROM DOUBLE CYLINDRICAL STRUCTURES

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Journal of Hydrodynamics 2006年第2期18卷 156-160页

作者： JI Gang ZHANG wei-kang ZHOU Qi-dou Department of Naval Architecture and Ocean Engineering Naval University of Engineering Wuhan 430033China

An experiment on radiation from double cylindrical structures was held in an open-air pond. Radiation responses from one-point harmonic force driven model and two-point stochastic forces driven model were measured. Nu... 详细信息

关键词： acoustic radiation experiment double cylindrical structure

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Deep vein thrombosis in patient with left-sided inferior vena cava draining into the hemiazygos vein: A case report

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World Journal of Clinical Cases 2021年第3期9卷 672-676页

作者： Li Zhang wei-kang Guan Department of Vascular Surgery Dazhou Central HospitalDazhou 635000Sichuan ProvinceChina

BACKGROUND Abnormalities of the inferior vena cava(IVC)are uncommon,and in many cases they are *** so,it is vital that clinicians be aware of such anomalies prior to surgery in affected *** the present report,we describe a rare anatomical variation of the *** SUMMARY A 66-year-old male was admitted to the hospital due to deep vein thrombosis of the right lower *** contrast-enhanced computed tomography imaging,we found that this patient presented with a case of left-sided IVC draining into the hemiazygos vein,while his hepatic vein was directly draining into the *** Cases of left-sided IVC can increase patient susceptibility to thromboembolism owing to the resultant changes in blood flow and/or associated vascular compression.

关键词： Left-sided inferior vena cava Deep vein thrombosis Hemiazygos vein Anatomic variation Case report

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Preparation and Characterization of Poly(γ-glutamic acid) Hydrogels as Potential Tissue Engineering Scaffolds

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Chinese Journal of Polymer Science 2014年第11期32卷 1507-1514页

作者： Wen Zeng wei-kang Hu Hao Li Yi-han Jing Hua kang Qing Jiang 张超 School of Engineering Sun Yat-sen University

In this paper, methacrylated γ-PGA（m PGA） precursor was synthesized via reaction between γ-PGA and glycidyl methacrylate（GMA）. Hydrogels from this precursor were prepared under 365 nm ultraviolet irradiation. The swelling behavior and mechanical properties were studied in detail as functions of the degree of substitution（DS）, precursor concentration, and environmental p H. Results showed that the crosslink density, swelling kinetics and mechanical properties of the hdyrogel could be tailored by adjusting the DS and concentration of the precursor as well as the environmental p H. Three-dimensional photo-encapsulation of swine cartilage chondrocytes and Live/Dead assay proved the cytocompatibility of the hydrogel.

关键词： Poly(γ-glutamic) acid Hydrogel Tissue engineering scaffold.

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Statistical studies of optically dark gamma-ray bursts in the Swift era

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Research in Astronomy and Astrophysics 2009年第10期9卷 1103-1118页

作者： wei-kang Zheng Jin-Song Deng Jing Wang National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 China Graduate University of Chinese Academy of Science Beijing 100049 China

We compare the properties of optically dark GRBs, defined by the optical-to-X- ray spectral indexβox 〈 0.5, and normal ones discovered by the Swift satellite before the year 2008 in a statistical way, using data collected from the literature and online databases. Our sample includes 200 long bursts, 19 short bursts, and 10 with measured high redshifts （z ≥ 4）. The ratio of dark bursts is found to be -10% - 20%, and is similar among long bursts, short ones, and the high-z sub-sample. The result for long bursts is consistent with both the pre-Swift sample and studies by other authors on smaller Swift samples. The existence of dark short GRBs is pointed out for the first time. The X-ray derived hydrogen column densities of dark GRBs clearly prefer large values compared with those of normal bursts. This supports the dust extinction scenario as the main cause of dark GRBs. Other possibilities like very high redshifts and non-standard emission mechanisms are less likely, although not fully excluded.

关键词： gamma rays bursts -- gamma rays observations

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Pt and Te codoped ultrathin MoS_(2) nanosheets for enhanced hydrogen evolution reaction with wide pH range

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Rare Metals 2022年第2期41卷 378-384页

作者： Cui-Hua An wei kang Qi-Bo Deng Ning Hu National Engineering Research Center for Technological Innovation Method and Tool School of Mechanical EngineeringHebei University of TechnologyTianjin 300401China Key Laboratory of Advanced Energy Materials Chemistry(MOE) College of ChemistryNankai UniversityTianjin 300071China Institute for New Energy Materials&Low-Carbon Technologies School of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China State Key Laboratory of Reliability and Intelligence Electrical Equipment Hebei University of TechnologyTianjin 300130China

Transition metal dichalcogenides,especially MoS_(2),have been examined as promising catalysts for hydrogen evolution reaction(HER).Meanwhile,MoS_(2)with various nanostructures and exposed more active sites has been broadly explored for boosting the HER performances at wide pH ***,a synergistic Pt and Te codoping strategy has been used to enhance the catalytic performance(including reducing the overpotential and promoting the HER reaction kinetics)of ultrathin MoS_(2)nanosheets in alkaline and acid electrolytes,which has delivered better than single Pt doping or single Te doping.

关键词： doping kinetics synergistic

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Multiple gouty tophi in the head and neck with normal serum uric acid:A case report and review of literatures

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World Journal of Clinical Cases 2022年第4期10卷 1373-1380页

作者： Yang Song Zi-wei kang Yan Liu Department of Otorhinolaryngology The First Affiliated Hospital of Dalian Medical UniversityDalian 116000Liaoning ProvinceChina

BACKGROUND Gouty tophus is rarely reported in the head and neck *** the best of our knowledge,this is the first report on multiple gouty tophi in the head and neck with normal serum uric acid(SUA)*** SUMMARY We report a case of multiple gouty tophi in the nasal dorsal and auricle regions with normal SUA *** patient was admitted to the hospital with a chief complaint of recurrent nasal swelling and pain for 3 years,which was aggravated for 3 *** patient’s SUA level had been regularly reviewed in the outpatient department and had been successfully controlled for several *** of the nasal masses was *** from the right ear cavity was used to repair the nasal *** pathological report confirmed a nasal gouty *** recurrence or deformity was found after a 1 year *** Normal SUA cannot completely negate the diagnosis of gouty tophus,especially in some rare regions.

关键词： Gout Multiple gouty tophi Serum uric acid Hyperuricemia Nasal Case report

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