نتایج جستجو برای: c40
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از بین روش های مختلفی که برای تصفیه ی مواد آلی از هوای صنایع آلاینده ی محیط زیست وجود دارند، روش های زیستی به دلیل صرفه ی اقتصادی، عدم تولید پساب ثانویه، کارایی بالا برای غلظت های کم، ساده بودن و ایجاد افت فشار کم مورد توجه هستند. از جمله ی روش های زیستی می توان به استفاده از بیوفیلتر های چکنده اشاره کرد. در این نوع بیوراکتور، وجود لایه ی پیوسته ای از مایع ریزان، نرخ انتقال جرم را برای مواد به ...
1. Mori S, Endo M, Obata T, et al. Clinical potentials of the prototype 256-detector row CT-scanner. Acad Radiol 2005;12:148 –54. 2. Kondo C, Mori S, Endo M, et al. Real-time volumetric imaging of human heart without electrocardiographic gating by 256-detector row computed tomography: initial experience. J Comput Assist Tomogr 2005;29:694 – 8. 3. Cordeiro MAS, Lima JAC. Atherosclerotic plaque c...
Genes that encode for enzymes that can degrade petroleum hydrocarbons (PHs) are critical for the ability of microorganisms to bioremediate soils contaminated with PHs. Distributions of two petroleum-degrading genes AlkB and Nah in soils collected from three zones of the Dagang Oilfield, Tianjin, China were investigated. Numbers of copies of AlkB ranged between 9.1 × 10(5) and 1.9 × 10(7) copies...
The financial economics literature proposes dozens of performance measures to be used, for instance, to compare, analyse, rank and select assets. There is thus a problem: which measures should be considered? We extend the current literature by comparing a large set of performance measures over more than one thousand of equities included in the Standard & Poor’s 1500 index. We evaluate performan...
Evaluating Environmental Programs: The Perspective of Modern Evaluation Research Large-scale environmental programs generally commit substantial societal resources, making the evaluation of their actual effects on the relevant outcomes imperative. As the example of the subsidization of energy-saving appliances illustrates, much of the applied environmental economics literature has yet to confro...
Article history: Received 5 December 2008 Received in revised form 27 March 2009 Accepted 16 April 2009 Available online xxxx 0146-6380/$ see front matter 2009 Elsevier Ltd. A doi:10.1016/j.orggeochem.2009.04.005 * Corresponding author. Tel.: +61 2 6125 7946. E-mail address: [email protected] (J.J. Bro Please cite this article in press as: Brocks, J.J., e Creek Formation. Org. Geochem. (...
This paper focusses on survey expectations and discusses their uses for testing and modeling of expectations. Alternative models of expectations formation are reviewed and the importance of allowing for heterogeneity of expectations is emphasized. A weak form of the rational expectations hypothesis which focusses on average expectations rather than individual expectations is advanced. Other mod...
In order to develop a long-lifetime MCP-PMT under high rates of circumstance, we investigated the degradation of the quantum efficiency (QE) of PMT’s with a multialkali photocathode. We found that not only positive ions, but also neutral residual gases would damage the photocathode resulting in an enhancement of the work function; their countermeasures were established in newly manufactured squ...
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