نتایج جستجو برای: homogenous groups
تعداد نتایج: 737768 فیلتر نتایج به سال:
Background: Mitoxantrone (MXT) is a drug for cancer therapy and a hazardous pharmaceutical to the environment which must be removed from contaminated waste streams. In this work, the removal of MXT by the electro-Fenton process over heterogeneous and homogenous catalysts is reported. Methods: The effects of the operational conditions (reaction medium pH, catalyst concentration and utilized cur...
OBJECTIVES To assess if in chronic venous insufficiency, there is a seasonal variation of cytokines levels which could explain the typical worsening of symptoms during Spring and Summer. PARTICIPANTS From 193 chronic venous insufficiency patients, we selected 32 patients in clinical stage C2-C3 of the Clinical-Etiology-Anatomy-Pathophysiology classification. DESIGN A prospective, comparativ...
AIM To evaluate how the type of trauma is related to specific symptom patterns in patients with post-traumatic stress disorder (PTSD) according to the Diagnostic and Statistical Manual of Mental Disorders Fourth Edition (DSM-IV) criteria. METHODS A total of 136 PTSD patients exposed to war-related traumatic experiences were divided in four groups: 79 veterans, 18 former prisoners (who witness...
In this paper, in addition to some elementary facts about the ultra-groups, which their structure based on the properties of the transversal of a subgroup of a group, we focus on the relation between a group and an ultra-group. It is verified that every group is an ultra-group, but the converse is not true generally. We present the conditions under which, for every normal subultra-group of an u...
in this paper, the interface crack of two non-homogenous functionally graded materials is studied. subsequently, with employing the displacement method for fracture of mixed-mode stress intensity factors, the continuous variation of material properties are calculated. in this investigation, the displacements are derived with employing of the functional graded material programming and analysis o...
This study develops a framework that combines different management science methods to provide insights concerning the performance of retailing stores. First, the framework enables to specify appropriate targets for stores of a retail network using data envelopment analysis. This involves comparing stores within homogenous groups, that is, supermarkets and hypermarkets. Second, the framework com...
BACKGROUND A large percentage of autogenous and homogenous grafts are resorbed and replaced by the recipient's own tissue. It is generally believed that autogenous grafts are superior to homogenous ones. The aim of our study was to compare the effectiveness of autografts and allografts in achieving the healing of a non-union of forearm bones. MATERIAL AND METHODS Between 1976 and 2005, 56 pat...
Investment, the entry of foreign firms depends a large extent on country’s goodwill, which is reflected in various ratings. This representation situation approximate, as it does not estimate differences between values indicators with adjacent grades. can be avoided by dividing countries into homogeneous groups. It appropriate to do so basis non-linear grouping rather than linear grouping. based...
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