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| 1 | Combined Chemical and Mineralogical Evidence for Heavy Metal Binding in Mining- and Smelting-Affected Alluvial Soils显示文摘The binding of metallic contaminants (Pb, Cd, and Zn) and As on soil constituents was studied on four highly con-taminated alluvial soil profiles from the mining/smelting district of Píbram (Czech Republic) using a combination of mineralogical and chemical methods. Sequential extraction analysis (SEA) was supplemented by mineralogical investi-gation of both bulk samples and heavy mineral fractions using X-ray diffraction analysis (XRD) and scanning electron microscopy with an energy dispersive X-ray spectrometer (SEM/EDS). The mineralogy of Fe and Mn oxides was studied by voltammetry of microparticles (VMP) and diffuse reflectance spectrometry (DRS). Zinc and Pb were predominantly bound in the reducible fraction attributed to Fe oxides and Mn oxides (mainly birnessite, Na4Mn14O27·9H2O), which were detected in soils by XRD and SEM/EDS. In contrast, Cd was the most mobile contaminant and was predominantly present in the exchangeable fraction. Arsenic was bound to the residual and reducible fractions (corresponding to Fe oxides or to unidentified Fe-Pb arsenates). SEM/EDS observations indicate the predominant affnity of Pb for Mn oxides, and to a lesser extent, for Fe oxides. Thus, a more suitable SEA procedure should be used for these mining-affected soils to distinguish between the contaminant fraction bound to Mn oxides and Fe oxides. | A. VANEK V. ETTLER T. GRYGAR L. BORUVKA O. EBEK O. DRBEK | 2008 | Pedosphere2008,18,4: | 8 |
| 2 | 杨梅叶挥发油的季节变化规律及其药用价值分析显示文摘目的:分析不同季节杨梅叶挥发油(Myrica rubra leaves volatile oils,MVO)的化学成分变化规律,探讨其抗癌抑菌等生物活性及药用价值。方法:通过水蒸气蒸馏法提取挥发油,利用GC-MS技术表征挥发油的季节差异性,并通过MTT法分析对人肺癌细胞A549增殖抑制作用,琼脂扩散法分析对6种细菌的抑菌活性。结果:春、夏、秋和冬四季杨梅叶挥发油提取得率为每100 g 0.09∽0.13 m L,分别鉴定出39、30、28和41种成分,其中有16种萜烯、醇、醛、酮、酸和酯类物质存在于所有的叶片中。β-石竹烯和α-葎草烯是杨梅叶挥发油的主要成分,β-石竹烯含量的季节变化规律为冬季(43%)〉春季(28.9%)〉秋季(22.9%)〉夏季(19.02%),α-葎草烯含量的季节变化规律为秋季(39.8%)〉春季(31.5%)〉冬季(26.02%)〉夏季(25.1%)。另外挥发油中含量超过15%的成分有秋季挥发油中的γ-雪松烯和夏季挥发油中的喇叭烯氧化物-(Ⅱ),此2种成分在不同的季节中含量变化差异显著,氧化石竹烯含量在春冬两季含量大于4%,秋季未检出,除此以外其他成分含量均较低。MTT实验结果表明,杨梅叶挥发油对细胞A549增殖的抑制随作用时间增加而增强,且冬季挥发油对肿瘤细胞具有较强的细胞毒活性。抑菌实验表明杨梅叶挥发油对革兰氏阳性菌的抑制作用强于对革兰氏阴性菌,而冬季挥发油抑菌效果强于其他3个季节,对变形杆菌和沙门氏菌的抑制能力较弱。结论:杨梅叶挥发油具有抑菌、抗癌等药物开发前景,且在冬季杨梅叶挥发油作用最为显著。 | 吴俊清 朱丽云 尹洁 杨君 高永生 张拥军 张春苗 Lenka Langhansova Tomas Vanek 楼纪东 | 2015 | 药物分析杂志2015,35,7: | 5 |
| 3 | Guidelines for the provision and assessment of nutrition support therapy in the adult critically ill patient: Society of Critical Care Medicine and American Society for Parenteral and Enteral Nutrition: Executive Summary*显示文摘 | Robert G. Martindale Stephen A. McClave Vincent W. Vanek Mary McCarthy Pamela Roberts Beth Taylor Juan B. Ochoa Lena Napolitano Gail Cresci | 2009 | Critical Care Medicine2009,,5: | 3 |
| 4 | 杨梅叶水溶性提取物的抗氧化、抗菌活性与防腐应用显示文摘以杨梅叶精油提取后的料渣为原料,对料渣的水溶性提取物进行了抗氧化分析,并将水溶性提取物经石油醚、二氯甲烷、乙酸乙酯和正丁醇分级萃取,并测定了其抗菌能力,在此基础上将抑菌效果明显的萃取层添加于肉糜进行防腐试验.结果表明,杨梅叶水溶性提取物在o.1~ 5mg/mL的浓度范围内对DPPH自由基和羟基自由基的清除能力均随着浓度升高而提高,且达到80%以上,具有较强的自由基清除能力.通过抑菌实验发现乙酸乙酯层和正丁醇层萃取液具有较强的抗菌性和较宽的抗菌谱,通过对肉糜的防腐添加实验发现乙酸乙酯层萃取液优于同浓度的山梨酸钾防腐效果,正丁醇层萃取液与同浓度的山梨酸钾防腐作用无显著差异. | 杨君 朱丽云 吴俊清 尹洁 Lenka Langhansova Tomas Vanek 高永生 楼纪东 | 2014 | 中国食品添加剂2014,25,2: | 3 |
| 5 | The differences in the interpolation methods for mapping spatial variability of soil properties显示文摘 | Brodsky L Vanek V Bazalova M Balik J | 2001 | Rostlinna Vyroba2001,47,12: | 2 |
| 6 | Multiple forms of prolactin receptor messenger ribonucleic acid are specifically expressed and regulated in murine tissues and the mammary cell line HC1 l显示文摘 | BUCK K VANEK M GRONER B et ol | 1992 | Endocrinology1992,130,3: | 1 |
| 7 | Posteromedial fracture of the tibial plataeu is not an avul-sion injury:A case report and experimental study显示文摘 | Vanek J | 1994 | J Bone Joint Surg Br1994,76,2: | 1 |
| 8 | Longitudinal motion control of a high-speed supercavitation vehicle 显示文摘 | VANEK B BOKOR J BALAS G J | 2007 | Journal of Vibration and Control2007,13,2: | 1 |
| 9 | The differ- ences in the interpolation methods for mapping spatial vari- ability of soil properties 显示文摘 | Brodsky L Vanek V Bazalova M Balik J | 2001 | Rostlinna Vyroba2001,47,12: | 1 |
| 10 | Correction of kyphotie deformity of the cervical spine in ankylosing spondylitis using pedicle subtraction osteotomy of the seventh cervical vertebra 显示文摘 | Vanek P Votavova M Ostry S | 2014 | Acta Chir Orthop Traumatol Cech2014,81,5: | 1 |
| 11 | Fibrinolytic inhibitors in off-pump coronary surgery: a prospective, randomized, double-blind TAP study (tranexamic acid, aprotinin, placebo)显示文摘 | Tomas Vanek Martin Jares Richard Fajt Zbynek Straka Karel Jirasek Miroslav Kolesar Petr Brucek Marek Maly | 2005 | European Journal of Cardio-Thoracic Surgery2005,,4: | 1 |
| 12 | Procedures for the selection of real components to characterize petroleum mixtures 显示文摘 | BA A ECKERT E VANEK T | 2003 | Chem Pap2003,57,1: | 1 |
| 13 | Off - pump versus on - pump coronary artery surgery显示文摘 | JARES M VANEK T BEDNAR F | 2007 | Int Heart J2007,48,1: | 1 |
| 14 | A multicenter, prospective, random- ized, single-blind, controlled clinical trial comparing VASER-as- sisted Lipoplasty and suction-assisted Lipoplasty 显示文摘 | Nagy MW Vanek PF Jr | 2012 | Plast Re- constr Surg2012,129,4: | 1 |
| 15 | Informality,Gender and Poverty:A Global Picture显示文摘 | Martha Chen Joann Vanek and James Heintz | 2006 | Economic and Political Weekly2006,,21: | 1 |
| 16 | Guidelines for the provi sion and assessment of nutrition support therapy in the adult critically ill patient :Society of Critical Care Medicine (SCCM) and American Society for Parenteral and Enteral Nutrition (ASPEN)显示文摘 | MeClave SA Martindale RG Vanek VW | 2009 | JPEN J Parenter Enteral Nutr2009,33,3: | 1 |
| 17 | Peripherally inserted central catheters may lower the incidence of catheter-related blood stream infections in patients in surgical intensive care units显示文摘 | Gunst M Matsushima K Vanek S | 2010 | Surg Infect (Larchmt)2010,,: | 1 |
| 18 | Guidelines for the provision and assessment of nutrition support therapy in the adult critically ill patient:Society of Critical Care Medicine(SCCM) and American Society for Parenteral and Enteral Nutrition (ASPEN) 显示文摘 | McClave SA Martindale RG Vanek VW | 2009 | J Parenteral Enteral Nutr2009,33,3: | 1 |
| 19 | Standardization of the earthquake magnitude scale显示文摘 | V. Kárník N. V. Kondorskaya Ju. V. Riznitchenko E. F. Savarensky S. L. Soloviev N. V. Shebalin J. Vanek A. Zátopek | 1962 | Studia Geophysica et Geodaetica1962,,1: | 1 |
| 20 | Cytokines and bio- trauma in ventilator-induced lung injury:a critical review of the literature显示文摘 | Halbertsma FJ Vaneker M Scheffer GJ | 2005 | Neth J Med2005,63,10: | 1 |