نتایج جستجو برای: dose accumulation
تعداد نتایج: 452555 فیلتر نتایج به سال:
background: radiation dose knowledge through xray examinations and their distribution in iran provides useful guidance on patient dose reduction. the results of the entrance skin dose (esds) of five common radiographies in all radiology centers in yazd province were reported in our previous study (2003). in the present study we have evaluated the collective effective dose of conventional x-ray ...
background: with the introduction of computed tomography in diagnostic radiology a new and fundamentally different imaging modality has become available. meanwhile, it is clear that the absorbed doses by the patients during ct were relatively high in comparison with those of other diagnostic radiology techniques. the aim of this survey was to determine the average absorbed dose in yazd province...
background: for an effective treatment planning in brachytherapy, it is necessary to know the accurate source dosimetric information such as air kerma strength, exposure rate constant, dose rate constant and redial dose distribution. the usual method to determine these factors is thermo luminescent dosimeter (tld) dosimetry. nowadays, another more accurate method is known to be the monte carlo ...
this study was designed to evaluate the detrimental effect of atrazine (atr) on germinal epitheliums (ge) cytoplasmic carbohydrate (ch) and unsaturated fatty acids (ufa) ratio and to clarify the effect of atr on serum levels of fsh, lh, testosterone and inhibin-b (inh-b). the impact of atr exposure on total antioxidant capacity (tac), sperm dna packing and integrity were also investigated. seve...
The research entitled the "Effect of different nitrogen levels on growth and yield spring maize" was conducted in agriculture farm Lovely Professional University, Phagwara. Three doses used at concentrations from lowest to highest. Nitrogen are denoted as N1, N2 N3 viz 80kgN2ha-1, 120 kg N2ha-1and 160 N2ha-1 respectively. All compared with each other for measurement morphological parameters lik...
Beam damage caused by energetic electrons in the transmission electron microscope is a fundamental constraint limiting the collection of artifact-free information. Through understanding the influence of the electron beam, experimental routines may be adjusted to improve the data collection process. Investigations of CeO2 indicate that there is not a critical dose required for the accumulation o...
Antibiotics are considered an important primary therapy for bacterial diseases in aquaculture. This study evaluated the influence of oral administration oxytetracycline (OTC) on feed intake, growth, mortality, residue accumulation and clearance, histopathological changes vital organs six groups Nile tilapia Oreochromis niloticus when fed at 0–10 times therapeutic dose (1×: 80 mg/kg biomass/day)...
Blocking autophagy with hydroxychloroquine (HCQ) augments cell death associated with alkylating chemotherapy in preclinical models. This phase I study evaluated the maximum tolerated dose (MTD), safety, preliminary activity, pharmacokinetics, and pharmacodynamics of HCQ in combination with dose-intense temozolomide (TMZ) in patients with advanced solid malignancies. Forty patients (73% metastat...
We have previously shown that post-transcriptional mechanisms involving the 26S proteasome regulate the cyclin-dependent kinase inhibitors (CKIs), p21(Cip1) and p27(Kip1) during preadipocyte proliferation. Earlier studies further demonstrated that the anti-inflammatory, anti-carcinogenic phytochemical, helenalin is a potent inhibitor of periodic Skp2 accumulation, an F-box protein mediating SCF...
The present study was an attempt to investigate whether the renal accumulation of Cu observed in the kidneys of rats and guinea-pigs exposed to arsenite (As-III) was an effect of arsenite alone or also shared by its metabolites--arsenate (As-V), dimethylarsinic acid and monomethylarsonic acid. The four arsenic compounds were administered subcutaneously and separately to rats for 12 days in incr...
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