نتایج جستجو برای: radium content
تعداد نتایج: 417502 فیلتر نتایج به سال:
Exploration of oil and natural gas from shale deposits can bring to the surface radioactivity. Naturally occurring Uranium-238 and Thorium-232 as part of their decay chains can produce radium isotopes, which are themselves precursors of radon gas. Due to the solubility of radium and its contaminated impact on the environments and health concerns, regulations on the levels of Ra226 and Ra228 in ...
Radium has been described (I have forgotten by whom,) as the most potent element which has been yet discovered for the production of discontent in the medical profession. It was hailed at first as a panacea for all ills. Although it has not fulfilled the hopes based upon it by those early enthusiasts, it has opened up new fields in the treatment of disease, especially malignant disease, but eve...
I t is well known that radium rays, as well as x-rays, are capable of affecting the living cell. Bergoni~ and Tribondeau 1 from extensive experimental studies made the generalization 2,3 that: "Immature cells and cells in an active state of division are more sensitive to the x-rays than are cells which have already acquired their fixed adult, morphological or physiological characters. ''2 Subse...
In the present paper, an investigation on natural and anthropic radioactivity heavy metals content in a basalt aggregate for concrete from Sicily, Southern Italy, was performed as case study. particular, evaluation of specific activity radium-226, thorium-232, potassium-40 caesium-137 radionuclides by using High-Purity Germanium (HPGe) γ-ray spectrometry, together with estimation several indexe...
Background and Purpose. Radium-223 dichloride (Xofigo®, Bayer HealthCare Pharmaceuticals Inc.) is the first α-particle emitter therapeutic agent approved by the FDA, with benefits in overall survival and delay in symptomatic skeletal event for patients with metastatic castrate-resistant prostate cancer (CRPC). Recent post hoc analyses of the phase III ALSYMPCA trial support the previously estab...
BACKGROUND The economic value of unconventional natural gas resources has stimulated rapid globalization of horizontal drilling and hydraulic fracturing. However, natural radioactivity found in the large volumes of "produced fluids" generated by these technologies is emerging as an international environmental health concern. Current assessments of the radioactivity concentration in liquid waste...
Improving options for patients with metastatic castration-resistant prostate cancer (mCRPC) provide latitude in designing treatment plans that meet patients' medical needs and personal goals. The field's rapid evolution opens avenues for contributions by multiple medical specialties and requires considering more options to ensure that each patient receives the most appropriate care. A multidisc...
background: radon is an odourless, colourless and tasteless gas and it is the first cause of lung cancer among non- smokers. the assessment of the level of radium in building materials helps in understanding the radiological implications. it has been observed that everyone has some levels of exposure to them. therefore measurement of radium and radon in the soil samples are important from publi...
Many pyrotechnic devices contain barium nitrate which is used as an oxidizer and colouring agent primarily for green-coloured fireworks. Similarly, strontium nitrate is used for red-coloured pyrotechnic effects. Due to their chemical similarities to radium, barium and strontium ores can accumulate radium, causing a remarkable activity in these minerals. Radium in such contaminated raw materials...
Samples of ferromanganese nodules from several localities in Lake Michigan have been analyzed for their minor element content utilizing neutron activation techniques. The thorium and uranium levels in Lake Michigan nodules exhibit marked dissimilarities with marine nodules. The radium content of these freshwater nodules is substantially higher than the reported marine values. The concentrations...
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