Loading...
在线办公
Reader Center
Visited
    Total visitors:
    Visitors of today:
    Now online:

Table of Content

    25 December 2014, Volume 42 Issue 6
    Previous Issue    Next Issue
    Uncertainty Evaluation and Analysis of D 50 Parameters of Atomized
    SHI Ling， HAN Shuyong， YANG Chengwu，CHEN Wen
    2014, 42(6):  5-8. 
    Asbtract ( 270 )   PDF (446KB) ( 341 )  
    Related Articles | Metrics
    Nozzle is widely applied in the devices of wet desulphurization，dust removal and others ，the D50 of the atomized droplets is the key parameter to evaluate the nozzle. Atomization experiments of different pressure and distance for the nozzle with the apertures of 1 . 44 μm and 0 . 46 μm were carried on ，and the uncertainty values of the D50 of the atomized droplets are calculated with uncertainty evaluation method. The experiment and evaluation results indicate，the D50 value of the atomized droplets changes a lot with the change of atomized conditions ，but the deviation of the D50 values inthe same conditions is small with the maximum value of measure of uncertainty being 5 μ m.And the further conclusion is that the D50 of the atomized droplets is determined by the structure of nozzle，and it is reliable to guide these lection of nozzle with D50.
    Research Progress of Chemical Composition Analysis Technology for Atmospheric Particulates
    TAN Jing ，LIU Qiongyu ，JIANG Junting ，LIAi hua
    2014, 42(6):  9-14. 
    Asbtract ( 493 )   PDF (497KB) ( 1495 )  
    Related Articles | Metrics
    The research progress of off-line and on-line analysis technology in chemical compositions analysis of atmospheric particles are discussed. The sampling technology and sample pretreatment technology of atmospheric particulates are compared.The off-line analysis technology，including atomic absorption spectrometry （AAS ），inductively coupled plasma mass spectrometry（ICP-MS），X-ray fluorescence spectrometer（XRF ），ion chromatography（IC ），gas chromatography-masss pectrometry （GC-MS），thermal optical carbonanalyzer（TOT/TOR）are discussed deeply. The developing tendency of on-line analysis technology in chemical compositions analysis of at mospheric particulates is forecasted. The on-line analysis technology including water-soluble ions，OC/EC ，chemical composition，particle mass concentration ，single particle feature monitoring are also expounded. The research provides a scientific basis for chemical compositions analysis of at mospheric particles and controlling of mist.
    Visible Photocatalytic Degradation of Methyl Orange Catalized with Polypyrrole - Cuprous Oxide Composites
    PENG Wangming，ZHU Xiuyun
    2014, 42(6):  15-20. 
    Asbtract ( 375 )   PDF (675KB) ( 529 )  
    Related Articles | Metrics
    Cuprous oxide was prepared with copper sulfate and glucose under ultrasonic condition ，the polypyrrole - cuprous oxide composites were synthesized by using in-situ polymerization of pyrrole and cuprous oxide with ferric chloride as oxidant. Some factors that influenced the degradation of methyl orange catalized with polypyrrole - cuprous oxide composites were studied. The results indicated that the photocatalytic degradation rate of methyl orange was up to 95. 23% when the composites amount was 0.10g，the methyl orange initial concentration was 20mg/L，the illumination time was 2h，the solution pH of methyl orange solution was 9 to 10. The infrared spectra showed the characteristic absorption peak of polypyrrole were at 3433.36、3319.55、3003～3077 and 1655.15cm-1，which is consistent with reports.
    Correlation Research of Scavenging Free Radicals and Flavones/Iron Content of Several Medical and Edible Plants
    GUO Yanhua
    2014, 42(6):  21-26. 
    Asbtract ( 194 )   PDF (521KB) ( 234 )  
    Related Articles | Metrics
    The flavonoids were extracted effectively from purslane ，houttuynia，glycyrrhiza ，wild chrysanthemum ，pueraria，mulberry leaves，the flavonoids content is determined with colorimetric method；Iron element of the six kind of medical and edible plants were extracted with wet digestion method，and the iron content was determined with atomic absorption spectrometry ；Researched the correlation of scavenging effect of DPPH free radicals and flavones/iron content of the plants. The results showed the six medical and edible plants all contain a certain amount of flavonoids and iron ，and the scavenging effect of DPPH free radicals has a certain correlation with flavonoids and iron content.
    Preparation of PVA ，PVP and β -CD Modified Regenerated Cellulose Membrane and Pervaporation Separation of Caprolactam- Water Mixtures
    ZHU Tianrong，LI Zhongming，LIU Jiyan，WANG Liang ，HU Si qian ，TANG Kai
    2014, 42(6):  27-34. 
    Asbtract ( 232 )   PDF (1387KB) ( 387 )  
    Related Articles | Metrics
    Caprolactam（C6H11NO）is one of the most important material in the polymer industry, dehydration is the most important edulcoration technology in the final caprolactam purification. However ，caprolactam is heat-sensitive substance, for prevention of degradation under high temperature, the dehydration of caprolactam with pervaporation (PVP) is studied. Cotton as membrane material and is firstly dessloved in the alkaline solution, then the regenerated cellulose（RC）is prepared by phase inversion method. The influence of concentration of casting solution on the membrane structure is investigated. The results show that the 4 wt % cellulose concentration is suitable to prepare the PV membrane. But the flux and separation factor of pure RC membrane are not ideal. Therefore ，polyvinyl alcohol（PVA ），Polyvinyl-Py-rrolidone（PVP ）and β -cyclodextrin （β-CD ）are selected to modify the RC membrane. The degree of swelling ，contact angle and PV performance of the modified membranes are tested. RC-PVA has better properties and the strength ，the flux and the separation factor are improved. With the addition of β -CD ， the separation factor of membrane is enhanced, and it has a little influence on flux.
    A New Method of Synthesis of 1 , 3 , 5 -phloroglucin
    XIE Fang
    2014, 42(6):  35-39. 
    Asbtract ( 360 )   PDF (613KB) ( 423 )  
    Related Articles | Metrics
    With trimethoxy benzene as material, after hydrolysis with concentrated hydrochloric acid, prepared phloroglucin, the yield reached 80%. The process route has the feature of easy material obtaining, short synthesis route, preparing method simpleness ，high yield, low cost and few three wastes. Tested and analysed the sample with IR ，UV，NMR and MS，the results showed the product is consistent with the chemical structure of the substance.
    Treatment Technology of Production Waste of Benzophenone Hydrazone
    DAI Fei，XUE Fei，HUANG Peng，LI Zhongming
    2014, 42(6):  40-44. 
    Asbtract ( 178 )   PDF (590KB) ( 295 )  
    Related Articles | Metrics
    Taking benzophenone hydrazone（BPH ）as an example ，explores the method of purifying BPH waste residue to BPH complying with industrial standard. With the decoloring and edulcorating feature of active carbon，chooses the amount of solvent ，the amount of active carbon，the reflux time ，obtains the white highly purified product from yellow waste residue and the suitable technological conditions ：solvent cyclohexane 13∶1（mass ratio with waste residue），active carbon 5 %（mass fraction of waste residue），reflux time 2 hours.
    Spectral Moment Formula of Graphs
    WU Yaping ，FU Jie
    2014, 42(6):  45-51. 
    Asbtract ( 307 )   PDF (616KB) ( 308 )  
    Related Articles | Metrics
    One problem of the reconstruction conjecture is：find a complete set of invariants of a graph. The spectral moment sequence is an important invariant of a graph，since the kth spectral moment of a graph is equal to the number of closed walks of length k. On the structure feature of a graph，first finds all connected subgraphs which can generate closed walks of length eight ，then provides 8th spectral moment calculation formula.
    Permanence of "Food-limited" Discrete System with Infinite Delays
    RUAN Yuqing
    2014, 42(6):  52-56. 
    Asbtract ( 197 )   PDF (460KB) ( 245 )  
    Related Articles | Metrics
    A"food-limited"discretemodelwithinfinitedelaysisstudied.Bygivingthedetailanaly?sisofthesystem ，obtainsthatthesystemispermanentunconditionally.
    Investigation of Pathomorphology and Biologic Characteristics ofTriple-Negative Breast Cancer and Basal-Like Breast Cancer
    WANG Chengxin，HUANG Xuan，FENG Hua
    2014, 42(6):  57-61. 
    Asbtract ( 279 )   PDF (1076KB) ( 330 )  
    Related Articles | Metrics
    Objective To investigate the pathomorphology ，biologic characteristics and the relation?ships of triple-negative breast cancer (TNBC)，non triple-negative breast cancer(NTNBC) and basal like breast cancer（BLBC）. Methods HER2 ，ER，PR，CK5 / 6 or EGFR protein were determined with immunohistochemistry（IHC ）in breast cancer, 3 cases of HER 2 IHC 3 + and 5 cases of HER2 IHC 2 + were analysed for HER2 gene amplification with fluorescent in situ hybridization（FISH）. CK5 / 6 or EGFR were checked in 22cases of TNBC. The cases were divided into the TNBC，NTNBC and BLBC groups according to the examination results.The pathomorphology and biologic characteristics of the three groups were compared. Results Of the 96cases，27. 08% （26/96）were confirmed to be TNBC in which grade Ⅱand Ⅲ caseswere 53. 85%（14/ 26）and 46. 15%（12/26）respectively ，lymph nodes metastasis rate was 61. 11%（11/ 18）；BLBC accounted for63. 64%（14/22）of TNBC ，in which grade Ⅱand Ⅲcases were 57. 14%（8 / 14）and 42. 86%（6 / 14）respectively ，lymph nodes metastasis rate was 55. 56%（5 / 9）；There were no grade Ⅰcases in TNBC andBLBC. 7 2 . 92%（70/ 96）wereconfirmedtobeNTNBCinwhichgradeⅠ，Ⅱand Ⅲcaseswere 28. 57%（20/ 70），57. 14%（40/ 70）and 14. 29%（10/ 70）respectively ，lymph nodes metastasis rate was 44. 44%（16/36）. The percentage of poorly differentiated cases and lymph nodes metastasis rate were higher inthe TNBC and BLBC group than those in NTNBC ，besides there was no gradeⅠcases in TNBC andBLBC group. Of the 5 HER2 IHC 2 + cases，one case there was gene amplification ，one equivocaland threenegativeand of 3 HER2 IHC 3 + cases,theFISH resultwasconsistentwith IHC.Conclusion More than 1 / 4 of breast cancer are TNBC or BLBC in our study.Compared with NTNBC，eventhough TNBC and BLBC share agreat dealof overlap and have a poor differentiation with aggressive behavior and increased local recurrence or distant metastasis，indicating a poor prognosis，theymaybe independent histopathologic entity. CK 5 / 6 or EGFR can be used to differentiate the BLBC fromTNBC.IHC 2 +cases should be examined with FISH in order to avoid misleading treatment.
    Exogenous Hyaluronic Acid Reduces R5 -HIVInfection of CD 4+T Cells
    LI Peilin
    2014, 42(6):  62-70. 
    Asbtract ( 220 )   PDF (791KB) ( 215 )  
    Related Articles | Metrics
    Objective To study whether exogenous HA can red uce macrophage-tropic (CCR 5 -dependent, R5 )HIV infectivity. Methods In this study，first using TZM-bl cell and unstimulated CD 4+T cells assays to assesswhether exogenous HA can reduce R5 -HIV infectivity. Next treat the un-stimulated CD4+T cells with hyaluroni?dase to study endogenous HA impact on R5 -HIV infectivity. At last measures both exogenous HA, and endogenous HA effect on R5 -HIV binding on CD 4+T cells.Results ( 1 ) 100 μg of exogenous HA treatment can reduce R5 -HIV infectivity on TZM-bl cells and un-stimualted CD 4+T cells (P < 0 . 001 ). (2) Hyaluronidase treatment can enhance HIV infectivity, by adding 100 μg of exogenous HA can reverse the function of hyaluronidase treatment(P<0. 001). (3) 100 μg of exogenous HA can reduce R5-HIV binding to CD4+ T cells, while hyaluronidase treatment can enhance R5-HIV binding to CD4+ T cells (P ＜0. 001). Conclusion Exogenous HA can reduce R5 -HIV in?fectivity on un-stimulated CD 4+T cells, while hyaluronidase treatment can enhance R 5 -HIV binding to CD 4+T cells,and R5 -HIV infectivity.
    Development and Evaluation of Clinical Effect of Ganciclovir OralDisintegrating Tablet
    ZHAO Mengxia, KE Guirong，HE Shengliang
    2014, 42(6):  71-74. 
    Asbtract ( 216 )   PDF (463KB) ( 237 )  
    Related Articles | Metrics
    Objective To develop the ganciclovir oral disintegrating tablet and evaluate the clinical utility. Methods Using ganciclovir as raw material medicine to develop orally disintegrating tablet，controlling the quality with ultraviolet spectrophotometric method and HPLC method，applying for the treatment of AIDS patients complicated with cytomegalovirus retinitis. Results The characters，identification，inspection，content determination indexes meet the quality control requirement，the effective rate for the curative treatment of AIDS patients with cytomegalovirus retinitis was 85. 71%.Conclusion The anciclovir oral disintegrating tablet developed had stable quality，and the quality analysis method is feasible. The adjuvant treatment of AIDS complicated with cytomegalovirus retinitis has obvious effect.
    Application and Nursing of Intraoperative Autotransfusion inOrthopedic Surgery
    HU Shuping，HAN Wanxia，LIN Zhiyu
    2014, 42(6):  75-77. 
    Asbtract ( 165 )   PDF (405KB) ( 301 )  
    Related Articles | Metrics
    Objective To explore the application effect of intraoperative autotransfusion in operation of orthopedics department. Methods Chose 62 cases of bone surgery from Mar. 2013toAug. 2014as research object ，divided them into observation group and control group according to the length oftail number of odd ，respectively 32cases and 30cases. The control group was treated with center suction for bleeding in operation field ，and the observation group was treated with intra operative auto transfusion. Results There were no statistical significance on Hct ，Hb and bleeding amount between observation group and control group before and after surgery （P > 0 . 05）；the allogeneic transfusion amount of observation group was obviously lower than that incontrol group （P < 0 . 05）；the allogeneic transfusion cases of observation group was obviously lower than that in control group （P <0 . 05）. Conclusion Application of intraoperative autotransfusion in orthopedic surgery， can effectively avoid or reduce allogeneic transfusion and the complications，it can be popularized in orthopedic department.
    Analysis on Micronucleus Formation Induced by Kidney Bean Lectin
    MOU Longmei，LIU Yizi ，LI Jianan
    2014, 42(6):  78-81. 
    Asbtract ( 186 )   PDF (588KB) ( 315 )  
    Related Articles | Metrics
    Objective To research the effect on micronucleus formation induced by lectin from varieties of kidney beans. Methods Giving the mice lectin of three kind of kidney beans by intraperitoneal injection for 6 days. Bone marrow cells were collected and microscope slides were prepared by Giemsa staining. Micronucleus ratio was analysed under a light microscope, then judged the mutagenic effect of different kidney bean lection. Results There was no significant difference between experiment group and negative control group， but positive group was obviously higher than experiment group and negative control group（P<0. 05） . Micronucleus ratio had a dose-effect relationship，but it was independent with gender.Conclusion The three levels of lectin of three kind of kidney beans have no effect on micronucleus formation of bone marrow cells in mice，they can be used for development of biological preparations.
    Application of Improved Hierarchy Model on Optimum Decision-Makingfor Design of Deep Foundation Pits
    ZHANG Haitao
    2014, 42(6):  82-84. 
    Asbtract ( 186 )   PDF (402KB) ( 246 )  
    Related Articles | Metrics
    The bracing engineering of deep foundation pit is a complicated system engineering，theoptimum decision-making on bracing schemes is a key link in design system. Scheme optimizationcan be considered asa multiple attribute decision-making analysisproblem ，analytic hierarchy pro?cess is a method of analysis and strategic decision for the complicated system with more influentialfactors ，itisoftenusedfortheoptimalevaluation.Establishesanoptimummodelofbracingschemesfor deep foundation pits through improved analytic hierarchy process with self-adjusting function ，acasestudyshowstheimprovedmethodispracticalandeasytoapply.
    Scene Path Planning Simulation System Design by Solvable-Space Algorithm
    ZHOU Jing，FU Xuchang
    2014, 42(6):  85-91. 
    Asbtract ( 192 )   PDF (1449KB) ( 251 )  
    Related Articles | Metrics
    A new particle swarm solvable-space pathfinding algorithm is proposed ，and the VegaPrime（VP）three-dimensionalvisualpathplanningsimulationsystemisachieved. Thealgorithmas ?sumesthateachinitialparticleisapotentiallyviablesolutionandcanreachtheterminalpoint.Dur ?ing the full iterations ，each particle updates its position continually and saves the numbers of pathpoints. Whenthesearch ended，findtheparticlewhosenumberofthepathpointsisfewest，andsetthisparticle ′ soptimalpositionineachiterationasthewayfindingroute.MeanwhileinVPlargemapscene，adding a circular gradient for the rectangular obstacles can easily solve the algorithm′ s de ?fect. The simulation system runs correctly proves the practicality of the algorithm and effectivenessofthesystem.
    Characteristics Analysis of Public Bus Transportation Network in Wuhanvia Complex Networks
    TU Lilan ，DING Junjun ，WANG Zijun，PAN Bingbing，HUANGBoxue
    2014, 42(6):  92-96. 
    Asbtract ( 251 )   PDF (977KB) ( 449 )  
    Related Articles | Metrics
    Based on the theory of complex networks and according to the Gephi software ，an adja?centsitenetwork，aroutenetworkandapublictransitnetworkareestablishedforthebustransporta ?tion systems in Wuhan ，and the topological structures are proposed and several static geometric pa?rameters for these three networks are obtained. Furthermore，topological characteristics which char ?acterizethesethreenetworksareanalysed.Accordingtothedataofthesethreenetworks，itcanfindthat the bus transportation system can meet the current demands. But there are also some problemswhich include uneven distribution，too long waiting time and unable to transfer for some individualsite.Finally ，proposessomesuggestionsonoptimization.