نتایج جستجو برای: killer of hamza
تعداد نتایج: 21167785 فیلتر نتایج به سال:
Continuous process improvement is a constant preoccupation of companies operating in strong competitive markets (Thawani, 2002; Cronemyr, 2007). The goal of process improvement projects is about increasing both efficiency and effectiveness of the business system (Brad, 2008). A widely used methodology for process improvement is Six Sigma DMAIC (Cascini et al., 2008; Hamza, 2008). Some researche...
The aim of this note is to show that the following difference equation xn+1 = α + xn−k ∑k−1 i=0 cixn−i , n = 0, 1, . . . , where k ∈ N, ci ≥ 0, i = 0, . . . , k− 1, ∑k−1 i=0 ci = 1, and α < −1, has solutions which monotonically converge to zero. This result shows the existence of such solutions which was not shown in the recently accepted paper: A. E. Hamza, On the recursive sequence xn+1 = α +...
The aim of this note is to show that the following difference equation: xn+1 = α+ xn−k ∑k−1 i=0 cixn−i , n= 0,1, . . . , where k ∈ N, ci 0, i = 0, . . . , k − 1, ∑k−1 i=0 ci = 1, and α < −1, has solutions which monotonically converge to zero. This result shows the existence of such solutions which was not shown in the recently accepted paper: A.E. Hamza, On the recursive sequence xn+1 = α+ xn−1...
background: natural killer (nk) cells play an important role in early stages of innate immune responses against viral and tumoral attacks. activation of nk cells by leishmaniasis results in secretion of cytokines such as interferon (ifn)-γ and tumor necrosis factor (tnf)-α, which enhances the phagocytosis and clearance of parasite. lipophosphoglycan 3 (lpg3), the leishmania homologous with grp...
The killer cell immunoglobulin-like receptors (KIR) are a recently discovered family of activating and inhibitory receptors which control natural killer (NK) cell function. KIR exist as a diverse family of receptors that have evolved rapidly by both gene duplication and recombination events. These findings were unexpected for a family of genes involved primarily in the innate immune response. H...
Background: Regarding the immunomodulatory effects of lactobacillus bacteria, this study aimed to evaluate the effect of oral administration of Lactobacillus reuteri, as probiotic bacteria, on natural killer cell cytotoxicity and tumor-specific lymphocyte proliferation in Balb/c mice with breast adenocarcinoma. Methods: A total of 30 female mice, aged 6- 8 weeks and with a weight of approximat...
Objectives: the purpose of the present study was to examine the relationship between natural killer cells and the clinical trend of depression before and after treatment. Methods: the subjects were 15 patients diagnosed with primary major depression, and 15 non-patients selected from among medical students and laboratory staff, matched in terms of age and sex. In the patient group, 6 out of 15 ...
Background: The innate immune system against malignancies is mainly orchestrated by natural killer cells, which carry out killing mechanisms by using their receptors, such as killer immunoglobulin-like receptors (KIRs). This study was designed to determine the diversity of KIR genes in non-melanoma skin cancers. Methods: A total of 160 subjects with skin cancer, including 60 cases of squamous c...
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