Primordial Black Holes evaporate due to Hawking radiation. We find that the evaporation time of primordial black holes increase when accretion of radiation is included. Thus depending on accretion efficiency more and more number of primordial black holes are existing today, which strengthens the idea that the primordial black holes are the proper candidate for dark matter. PACS numbers : 98.80....

Current progress in nanomedicine has exploited the possibility of designing tumor-targeted nanocarriers being able to deliver radionuclide payloads in a site or molecular selective manner to improve the efficacy and safety of cancer imaging and therapy. Radionuclides of auger electron-, alpha-, beta-, and gamma-radiation emitters have been surface-bioconjugated or after-loaded in nanoparticles ...

The understanding of the processes that control the behavior of radionuclides in crops can support policymakers to take actions to protect the environment and safeguard human health. Data concerning the behavior of radionuclides in fruits are limited. Strawberry (Fragaria x ananassa Duchesne) plants were contaminated on the aboveground part by sprinkling an aqueous solution of 134Cs and 85Sr at...

Radionuclides existing in the environment, both natural and artificial, are accumulated in plants and animals and transferred through the trophic chain. That is the way which more and more wakes up to the interest of longterm impact on living organisms and the possibility of their transfer through feed way to human body. Basing on their high radiotoxicity to living organisms the alpha emitting ...

objective: growth differentiation factor 9b (gdf9b) is an oocyte-derived growth factor. this protein is essential for the development of ovarian follicles and acts mainly by binding to its receptor on the surface of granulosa cells. the effect of gdf9b on the growth of follicles in various developmental stages, particularly primordial and primary follicles, is unknown. thus the aim of this stud...

Characterization of commercially available instruments for measurement and identification of unknown radionuclides was carried out in support of the development and testing of the American National Standards Institute (ANSI) standard, N42.34, "Performance Criteria for Hand-held Instruments for the Detection and Identification of Radionuclides." Measurements were based on the performance of the ...

This paper reviews some aspects and recent developments in the use of antibodies to target radionuclides for tumor imaging and therapy. While radiolabeled antibodies have been considered for many years in this context, only a few have reached the level of routine clinical use. However, alternative radionuclides, with more appropriate physical properties, such as lutetium-177 or copper-67, as we...

BACKGROUND Pain from skeletal metastases represents a major burden of advanced disease from solid tumors. Analgesic medications, bisphosphonates, hormonal agents, cytotoxic chemotherapy, and external beam radiotherapy are all effective treatments. However, patients often suffer from diffuse painful metastases and respond poorly to these standard therapies. Bone-seeking radionuclides can specifi...

Accelerator mass spectrometry (AMS) is the analytical technique of choice for the detection of long-lived radionuclides that cannot be practically analysed with decay counting or conventional mass spectrometry. AMS has been used for the analysis of C, Be, Cl and other cosmogenic radionuclides in archaeology, geology and environmental science. In addition, the ultrasensitivity of AMS is being ap...