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52篇 您的检索式:作者名="Bowan"
    题名 作者 年代 出处 被引量
1Spectrofluorimetric determination of trace amounts of cadmium with 2,4-dihydroxyacetophenone benzoylhydrazone显示文摘A new fluorescent reagent 2,4-dihydroxyacetophenone benzoylhydrazone (DHAPBH) was synthesized and its ionization constants were established spectrophotometrically. The fluorescent reaction of this reagent with cadmium was studied. The cadmium ion can form a stable binary chelate with DHAPBH, having a mole ratio of 1:2 in the pH range of 3.6-4.4. Based on this chelation reaction, a highly sensitive spectrofluorimetric method was developed for determination of trace amounts of cadmium in a water-ethanol (7:3 in volume ratio) medium at pH = 4.0. Under these conditions, the Cd-DHAPBH complex has excitation and emission maxima at 306 and 437 nm, respectively. The linear range of the method is from 0.36 to 140 μg?L?1 and the detection limit is 0.27 μg?L?1 of cadmium. Interferences of other ions were stud- ied. The method was successfully applied to the determination of cadmium in mineral water, tap water, river water, and wastewater.LIU Jianning ZHANG Bing WU Bowan LIU Yongchun YU Xinqiao 2006Rare Metals2006,25,2:5
2Preparation and characterization of microcrack-free thick YBa_2Cu_3O_(7-δ) films显示文摘High quality epitaxial YBa2Cu3O7-δ (YBCO) superconducting films were fabricated on (00l) LaAlO3 substrates using the direct-current sputtering method. The attainment of an unusually high film thickness (up to 2.0 μm) without mi-crocracking was attributed in part to the presence of pores correlated with yttrium-rich composition in the films. The influ-ence of the film thickness on the microstructure was investigated by X-ray diffraction conventional scan (θ-2θ,ω-scan,pole figure) and high-resolution reciprocal space mapping. The films were c-axis oriented with no a-axis-oriented grains up to the thickness of 2 μm. The surface morphology and the critical current density (Jc) strongly depended on the film thickness. Furthermore,the reasons for these thickness dependences were elucidated in detail.XIONG Jie QIN Wenfeng TANG Jinlong TAO Bowan CUI Xumei LI Yanrong 2007Rare Metals2007,26,5:3
3Effects of precursor solution concentration on the properties and morphology of YBCO films deposited by TFA-MOD method显示文摘Epitaxial YBCO films were deposited on (100) LaAlO3 single-crystal substrates by metalorganic deposition ofmetal trifluoroacetate precursors with different concentrations. All the YBCO films have Tc around 91 K and Jc excess 2MA/cm2 at 77 K in zero field. XRD θ-2θscans show all the films have c-axis normal orientation. The FWHM (full width athalf-maximum intensity) values of X-ray ω-scans of (005) reflection are 0.379°, 0.283°, and 0.543° for the YBCO thin filmsdeposited with precursor solution concentrations of 1.52, 1.0, and 0.75 mol/L, respectively. With the concentration of theprecursors decreasing, the thickness of the films decreases linearly. SEM micrographs show that porosities in the films be-come bigger with the precursor solution concentration decreasing. The big porosities in the film with the lowest concentra-tion precursor deteriorate the superconducting property and make it have a wider superconducting transition and a lower Jc.CUI Xumei TAO Bowan LI Yanrong LIU Xingzhao CHEN Jiajun XIONG Jie 2005Rare Metals2005,24,3:2
4Effect of Synthetic Method and Reductant on the Morphology and Photocatalytic Hydrogen Evolution Performance of Ru Nanoparticles显示文摘KONG Chao HAN Yanxia HOU Lijie CHEN Dongping WU Bowan 2017Chemical Research in Chinese Universities2017,33,5:2
5Rapid and sensitive de- tection of methyl-parathion pesticide with an electropolymerized, molecularly imprinted polymer capacitive sensor 显示文摘Hui Li Zhihua Wang Bowan Wu et al 2012Electrochimica Acta2012,62,:1
6Mechanism and modeling of nitrogen chemistry in combustion 显示文摘Miller J A Bowan C T 1989Progress in Energy and Com- bustion Science1989,15,4:1
7Mechanism and Modeling of Nitrogen Chemistry in Combustion显示文摘Miller J A Bowan C T 1989Progress in Energy and Combustion Science1989,15,4:1
8Simple tools for assessment of avarian reserve (OR):individual ovarian dimensions are reliable predictors of OR显示文摘Bowan S Norian J Santoro N 2007Fertil Steril2007,88,2:1
9Synthesis and characteriza- tion of WC-VC-Co nanocomposite powders through thermal-process- ing of a core-shell precursor显示文摘Lin Hua Tao Bowan Xiong Jie 2013Ceramics International2013,39,8:1
10Linking customer management effort to customer profitability in business markets显示文摘Bowan D Journal of Marketing Research0,41,4:1
11Modulation of the folate receptor alpha gene by the estrogen receptor:mechanism and implications in tumor targeting显示文摘Kelley KM Bowan BG Ratnam M 2003Cancer Res2003,63,:1
12The use of enderspins inestracapsular fracture of the hip显示文摘Chapman M D Bowan M D Csongvadi M D 1991Bone Joint Surg(Am )1991,63,1:1
13Prevalence of obesity,diabetes,and obesity-related health risk factors显示文摘Mokdad AH Ford ES Bowan BA 2003JAMA2003,280,:1
14Prevalence of obesity,diabetes,and obesity-related health risk factors显示文摘Mokdad AH Ford ES Bowan BA 0,,:1
15A clinical study of the paramenters and effects of temporary arterial occlusion in the management of intracranial aneurysms显示文摘Samson D Batjer HH Bowan G 1994Neurosurgery1994,34,1:1
16The crystal structure of Cr23 C6显示文摘Bowan A L Arnold G P Storms E K 1972Acta Crystall B1972,28,10:1
17Mechanism and modeling of nitrogen chemistry in combustion显示文摘Miller J A Bowan C T 1989Progress in Energy and Combustion Science1989,15,4:1
18Activity-based disaggregate travel demand model system with activity schedules显示文摘Bowan J L Ben-Akiva M 2001Transportation Research Part A2001,35,1:1
19Polymerization reaction dynamics of ethylene glycol methacrylates and dimethacrylates by calorimetry显示文摘Scranton A B Christopher N Bowan J K 1992polymer1992,33,8:1
20Methanotrophic TCE biodegration in a multi - stage bioreactor显示文摘TschantzM F Bowan J P Donaldson T L 1995Environl Scil Technol1995,29,8:1
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