نتایج جستجو برای: iodine isotope
تعداد نتایج: 54218 فیلتر نتایج به سال:
Iodine fortification of plants is a means improving the nutritional iodine status for humans. However, knowledge regarding absorption and accumulation in remains limited. Hence, we used nutrient culture isotope tracking methods, radioactivity 125I was measured by using multi-channel spectrometer to study characteristics an eggplant. The results showed that detected stems leaves after 20 min inc...
I131 is a famous radio-iodine isotope in use for diagnosis and treatment of hyper functioning and cancerous thyroid gland. It is a nuclear reactor product; however nuclear reactor may be unavailable in some areas. Replacement by I-124 may be possible, another iodine isotope producible by cyclotron; a system more available than reactor. Here absorbed fraction of Gamma and Beta rays of...
We report iodine and bromine concentrations in a total of 256 samples of pore waters collected from all nine sites of ODP Leg 204, Hydrate Ridge. In a subset of these samples, we have also determined iodine ages in the fluids using the cosmogenic isotope I (T1/2 = 15.7 Ma). The presence of this cosmogenic isotope combined with the strong association of iodine with methane allows the identificat...
All-trans-retinoic acid (ATRA) can enhance iodine uptake capability of thyroid tumors, but the mechanisms remain poorly understood. The aim of the present study was to investigate the effects of ATRA on isotope susceptibility, proliferation and invasion of anaplastic thyroid carcinoma (ATC) and potential mechanisms. SW1736 cells were treated with 1 µmol/l ATRA or 1% ethanol for 5 days. A cell l...
I131 is a famous radio-iodine isotope in use for diagnosis and treatment of hyper functioning and cancerous thyroid gland. It is a nuclear reactor product; however nuclear reactor may be unavailable in some areas. Replacement by I-124 may be possible, another iodine isotope producible by cyclotron; a system more available than reactor. Here absorbed fraction of Gamma and Beta rays of...
Trace elements often accumulate in keratin-rich tissues. Hair, nails, and horns grow steadily but once formed are metabolically inactive and provide an archive of trace element exposure when analyzed in segments. Here we demonstrate the use of laser ablation ICP-MS for the high-resolution monitoring of trace elements in the horns of seaweed-eating sheep from North Ronaldsay, which live on grass...
The determination of I in environmental samples at ultratrace levels is very difficult by ICP-MS due to a high noise caused by Xe impurities in argon plasma gas (interference of Xe), possible IH2 1 interference and an insufficient abundance ratio sensitivity of the ICP mass spectrometer for I/I isotope ratio measurement. A sensitive, powerful and fast analytical technique for iodine isotope rat...
Isotope therapy is one of the methods used in primary hyperthyroidism. The therapy is based on short-range beta radiation emitted from radioactive iodine. Radioiodine administration must always be preceded by pharmacological normalization of thyroid function. Otherwise, post-radiation thyrocyte destruction and thyroid hormones release may lead to hyperthyroidism exacerbation. Indications for ra...
The iodine content of several kinds of foods representing different product groups available on the Swiss market was analyzed by isotope dilution inductively coupled plasma mass spectrometry using the enriched long-lived nuclide I. Considerable variations in levels of iodine between single foodstuffs within food groups were found, which also applied for levels in different food groups. The cont...
1 During the last decade, there have been excellent and very rapid advances in “Nuclear Medicine and Molecular Imaging” throughout the world. The developments in radiopharmaceuticals induced evolution of nuclear medicine from imaging certain biologic features to targeted drug delivery designed for the specific characteristics of an individual patient’s disease. While the use of therapeutic radi...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید