نتایج جستجو برای: 19 th
تعداد نتایج: 489068 فیلتر نتایج به سال:
Abstract Background Early diagnostic indicators and the identification of possible progression to severe or critical COVID-19 in children are unknown. To investigate immune characteristics early SARS-CoV-2 infection key prognostic factors for COVID-19, a retrospective study including 121 with was conducted. Peripheral blood lymphocyte subset counts, T cell-derived cytokine concentrations, infla...
The 19th European Conference on Applications of Surface and Interface Analysis (ECASIA'22) was held at the University Limerick in Republic Ireland from 29 May – 3 June 2022. For many this first face-to-face meeting since end COVID 19 Pandemic for reason it is perhaps not surprising that numbers were somewhat lower than one would expect to see an ECASIA Meeting. meant possible run conference its...
The activation of antigen-specific B cell responses can be modulated by a number of T cell regulatory influences. It was first observed (1-3) that B cell responses to many antigens require the participation of T helper (Th) ~ cells. Studies (4, 5) using both heterogeneous and, more recently, cloned Th populations have shown that distinct B cell activation pathways exist in which Th cellB cell i...
This paper presents new U–Th/He crystallization and He exposure ages on olivine for a suite of basalt samples from the Snake River Plain, Idaho. The results provide the first demonstration that U–Th/He geochronology can be successfully applied to Late Quaternary basalts using measurements of olivine phenocrysts as opposed to U-rich minerals. The approach employs abrasion to remove the outer rin...
this in-vitro study sought to assess the push-out bond strength of a total etch and 2 self-etch bonding systems to intracanal dentin of primary anterior teeth (pat).thirty-six primary anterior teeth were randomly divided into 3 groups of 5(th) generation (single bond 2), 6(th) generation (clearfil se) and 7(th) generation (single bond universal) bonding agents. the canal orifice was restored wi...
background: seroma formation is a common complication after breast cancer surgery. several techniques such as tube drainage, fibrin sealant and suturing methods have been employed to prevent or reduce seroma formation. capitonnage, a suturing method widely used following hydatid cyst removal, has been used after breast surgery in limited studies. our aim was to compare the effectiveness of tube...
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