نتایج جستجو برای: radium concentration

تعداد نتایج: 383779  

Introduction Foodstuffs are known to contain natural and artificial radionuclides. Determination of radionuclide concentration is of great significance for the protection of human health. The main objective of the present study was the quantification of radionuclides in tea samples, cultivated in Guilan Province in North of Iran. Materials and Methods The activity concentrations of 226Ra, 232Th...

2015
Leong Ying Robert Brenna Richard Yuen Cory Hoskins

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 ...

2016
Sylvia B. Wigoder

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...

2003
KANEMATSU SUGIURA GIOACCHINO FAILLA

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...

Journal: :Nuclear Technology & Radiation Protection 2022

Radon exhalation rate is the of radioactive radon gas that escapes from soil into atmosphere. In this study was measured for 33 samples soil, in four districts Duhok province, using two different techniques: one concentration and other radium content, by both alpha gamma spectroscopy. For measurement, alpha-sensitive RAD7 detector used. While second method, expressed as a function concentration...

Journal: :Limnology and Oceanography 2021

Radium isotopes and radon are routinely used as tracers to quantify groundwater porewater fluxes into coastal freshwater systems. However, uncertainties associated with the determination of tracer flux often poorly addressed neglect all potential errors conceptualization system (i.e., conceptual uncertainties). In this study, we assess magnitude some key related radium inputs supplied by a wate...

2016
Nghi C Nguyen Muhammad Shah Leonard J Appleman Rahul Parikh James M Mountz

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...

2015
Joseph F Renzulli Jennifer Collins Anthony Mega

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...

2009
Georg Steinhauser Andreas Musilek

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...

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