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57篇 您的检索式:作者名="HAARBERG"
    题名 作者 年代 出处 被引量
1新型碳材料作为直接醇类燃料电池催化剂载体的评述显示文摘电催化反应过程涉及固、液、气传输以及电子和质子传导,为确保反应的顺利进行和提高催化剂中贵金属的利用率及延长催化剂的寿命,理想的电催化剂载体必须同时具备高比表面积、导电性好、合适的孔结构、耐腐蚀以及合适的表面基团等.为此,碳载体的改性工作受到关注,常用的方法是通过酸、碱、氧化和高分子等手段改变载体的结构和表面性质,以期接近理想电催化剂载体的要求;同时在开发新型碳载体方面做了更大量的工作.本文简要评述了商品炭载体如碳黑Vulcan XC-72R以及其它的乙炔黑、黑珍珠-2000、Printex XE-2和Ketjen Black EC等碳材料在直接醇燃料电池中的应用,但对纳米碳纤维、碳纳米管、有序多孔碳、中间相碳小球、碳纳米角、碳纳米卷和碳气凝胶等新型碳载体则进行了较全面的评述.与商品碳载体相比,新型碳载体在一定程度上都表现出比XC-72R更优的性能,这主要是因为新型碳材料具有特殊的结构、更高的结晶性能(导电性)和更好的传质能力.唐水花 孙公权 齐静 孙世国 郭军松 辛勤 Geir Martin HAARBERG 2010催化学报2010,31,1:14
2Orally administered extract from Prunella vulgaris attenuates spontaneous colitis in mdr1a^(-/-) mice显示文摘AIM: To investigate the ability of a Prunella vulgaris(P. vulgaris) ethanolic extract to attenuate spontaneous typhlocolitis in mdr1a-/- mice. METHODS: Vehicle(5% ethanol) or P. vulgaris ethanolic extract(2.4 mg/d) were administered daily by oral gavage to mdr1a-/- or wild type FVBWT mice from 6 wk of age up to 20 wk of age. Clinical signs of disease were noted by monitoring weight loss. Mice experiencingweight loss in excess of 15% were removed from the study. At the time mice were removed from the study, blood and colon tissue were collected for analyses that included histological evaluation of lesions, inflammatory cytokine levels, and myeloperoxidase activity. RESULTS: Administration of P. vulgaris extracts to mdr1a-/- mice delayed onset of colitis and reduced severity of mucosal inflammation when compared to vehicle-treated mdr1a-/- mice. Oral administration of the P. vulgaris extract resulted in reduced(P < 0.05) serum levels of IL-10(4.6 ± 2 vs 19.4 ± 4), CXCL9(1319.0 ± 277 vs 3901.0 ± 858), and TNFα(9.9 ± 3 vs 14.8 ± 1) as well as reduced gene expression by more than two-fold for Ccl2, Ccl20, Cxcl1, Cxcl9, IL-1 α, Mmp10, VCAM-1, ICAM, IL-2, and TNFα in the colonic mucosa of mdr1a-/- mice compared to vehicle-treated mdr1a-/-mice. Histologically, several microscopic parameters were reduced(P < 0.05) in P. vulgaris-treated mdr1a-/-mice, as was myeloperoxidase activity in the colon(2.49 ± 0.16 vs 3.36 ± 0.06, P < 0.05). The numbers of CD4+ T cells(2031.9 ± 412.1 vs 5054.5 ± 809.5) and germinal center B cells(2749.6 ± 473.7 vs 4934.0 ± 645.9) observed in the cecal tonsils of P. vulgaris-treated mdr1a-/- were significantly reduced(P < 0.05) from vehicle-treated mdr1a-/- mice. Vehicle-treated mdr1a-/- mice were found to produce serum antibodies to antigens derived from members of the intestinal microbiota, indicative of severe colitis and a loss of adaptive tolerance to the members of the microbiota. These serum antibodies were greatly reduced or absent in P. vulgaris-treated mdr1a-/- mice. CONCLUSION: The anti-inflammatory activity of P. vulgaris ethanolic extract effectively attenuated the severity of intestinal inflammation in mdr1a-/- mice.Kelley MK Haarberg Meghan J Wymore Brand Anne-Marie C Overstreet Catherine C Hauck Patricia A Murphy Jesse M Hostetter Amanda E Ramer-Tait Michael J Wannemuehler 2015World Journal of Gastrointestinal Pharmacology and Therapeutics2015,6,4:8
3Electrochemical Behavior of Dissolved Fe_2O_3 in Molten CaCl_2-KF显示文摘The electrochemical behavior of dissolved Fe2O3 in 82.5CaCl2-17.5KF(mole percent,%)was studied using cyclic voltammetry,chronoamperometry,and galvanostatic electrolysis at 827 ℃,and the deposits were characterized by XRD and SEM.Pure iron was deposited on a rotating cylinder(210 r/min)with a cell voltage less than-1.0 V.Deposition rate was controlled by diffusion on a molybdenum electrode.The diffusion coefficient of iron species Fe(Ⅲ)in the melt at 827 ℃ was found to be 9.7×10-5 cm2/s.WANG Shu-lan Geir Martin Haarberg Eirin Kvalheim 2008Journal of Iron and Steel Research(International)2008,15,6:4
4熔盐电解精炼提纯金属硅(英文)显示文摘对熔盐电解质中硅的沉积过程进行电化学研究。在 973~223K,在硅氯化物熔盐中采用电解精炼提纯金属硅。结果表明,液态硅铜合金阳极有利于 CaCl2-NaCl-CaO-Si 熔盐体系的电解精炼。ICP-AES 分析结果显示,通过电解精炼可有效去除原料中大量的钛、铝、铁等金属杂质,硅中的硼和磷含量分别由 36×106和 25×106降低至 4.6×10 6和 2.8×10 6,电解能耗约为 9.3 kW·h/kg。蔡靖 罗学涛 卢成浩 Geir Martin HAARBERG Annabelle LAURENT Ole Edvard KONGSTEIN 王淑兰 2012Transactions of Nonferrous Metals Society of China2012,22,12:4
5甲醇浓度对Pt/C催化剂氧还原活性的影响(英文)显示文摘采用半池考察了Pt/C催化剂在含不同浓度甲醇的0.5mol/L硫酸中的氧还原活性(ORR).研究发现,当甲醇浓度为0.1mol/L时,Pt/C催化剂的ORR活性最高,在催化层上热压商品NafionNRE-212膜后也出现同样趋势.线性扫描伏安曲线显示,压膜前后的Pt/C催化剂的ORR活性在含0.1mol/L甲醇的0.5mol/L硫酸中几乎没有变化.电化学阻抗谱结果表明,在该溶液中,Nafion膜的电阻比在其它电解液中低,这可能是导致Pt/C催化剂ORR活性提高的主要原因.有必要关注Nafion膜的这一异常性质并通过特殊设计后用于电池堆,以提高燃料电池性能.唐水花 林文锋 Paul A.CHRISTENSEN Geir Martin HAARBERG 2013催化学报2013,34,6:2
6Pharmacologic inhibition of PKCct and PKC0 prevents GVHD while preserving GVL activity in mice显示文摘Haarberg KM Li J Heinrichs J 2013Blood2013,122,14:1
7Electrodeposition of titanium from chloride melts 显示文摘Haarberg G M Rolland W Stertern A 1993Appl Electrochem1993,23,3:1
8Measurement of Electr onic Conduction in Cryolite Alumina Melts and Estima-tion of Its Effect on Cu rrent Efficiency 显示文摘 Osen K S Thonstad J 1993Metall Trans1993,24,10:1
9Electronic Trans-port in Molten Salt Rich Na-NaX Solutions (X=Br, I) 显示文摘 Osen K S Heus R J 1988Ber Bunsenges Phys Che m1988,92,1:1
10The Movement of Electr ons in Molten Salts 显示文摘 Osen K S Heus R J 1990J Electrochem Soc1990,137,9:1
11Electrodeposi- tion of titanium from chloride metals 显示文摘Haarberg G M Rolland W Sterten A 1993J Appl Electro- chem1993,23,3:1
12Electrowinning of iron in aqueous alkaline solution using rotating disk electrode 显示文摘Yuan Boyan Haarberg G M 2009Revue de Metallurgie2009,,10:1
13Cyclic and linear voltammetry on Ti/IrO2-Ta2O5-MnOx electrodes in sulfuric acid containing Mn^2+ ions显示文摘Nijjer S Thonstad J Haarberg G M 2001Electrochimica Acta2001,46,:1
14Electrodeposition of titanium diboride from fused salts 显示文摘Makyta M Danek V Haarberg G M 1996Journal of Applied Electrochemistry1996,26,:1
15Cyclic and linear vohammetry on Ti/IrO2-Ta2O5 -MnOx electrodes in sulfuric acid containing Mn^2+ ions 显示文摘NIJJER S THONSTAD J HAARBERG G M 2001Electrochim ica Acta2001,46,:1
16Oxidation of manganese(Ⅱ) and reduction of manganese dioxide in sulphuric acid显示文摘Nijjer S Thonstad J Haarberg G M 2000Electrochimica Acta2000,46,23:1
17Cyclic and linear voltammetry on Ti/IrO2-Ta2O5-MnOx electrodes in sulfuric acid containing Mn^2+ ions 显示文摘Nijjer S Thonstad J Haarberg G M 2001Electrochim Acta2001,46,23:1
18Electrodeposition of magnesium from the eutectic LiCl–KCl melt显示文摘A.M. Martínez B. B?rresen G.M. Haarberg Y. Castrillejo R. Tunold 2004Journal of Applied Electrochemistry2004,,12:1
19Pharmacologic inhibition of PKCct and PKCO prevents GVHD while preserving GVL activity in mice显示文摘Haarberg KM Li J Heinrichs J 2013Blood2013,122,14:1
20Electrorefining of silicon in molten calcium chloride显示文摘KONGSTEIN O E WOLLAN C SULTANA S HAARBERG G M 0,,:1
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