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  • radiotherapy
  • The effective use of radiotherapy in cancer cure and palliation is compromised by the side-effects resulting from radiosensitivity of bordering normal tissues, which are invariably exposed to the cytotoxic effects of ionizing radiation during treatment. (isharonline.org)
  • Radiotherapy is one of the basic therapeutical tools in the management of malignant tumors: 50-60% is susceptible to radiation in the course of their evolution, either for curative or palliative purposes. (sld.cu)
  • proteins
  • In their recent publication in Nano Letters ( 'Reduced radiation damage in transmission electron microscopy of proteins in graphene liquid cells' ), Sercan Keskin and Niels de Jonge from the INM-Leibniz Institute for New Materials now demonstrate, that the radiation tolerance is increased by an order of magnitude compared to a sample in ice. (nanowerk.com)
  • exposure
  • According to a review published in the American Scientist, these microscopic invertebrates can survive extreme variations in temperature from near absolute zero (-459 deg F) up to +302 deg F. They can also tolerate pressures that are 6 times greater than the deepest ocean, exposure to ionizing radiation (UV and x-ray) and the vacuum of space, as well as exposure to carbon dioxide and monoxide, nitrogen and sulfur dioxide. (scienceblogs.com)
  • To survive exposure to temperatures below the freezing point of their body fluids, cold tolerant organisms mainly use either the freeze avoidance or freeze tolerance strategy ( Storey and Storey, 1996 ). (biologists.org)
  • Freeze tolerance in the tardigrade Richtersius ( Adorybiotus ) coronifer , originating from polar regions, has been reported previously by Westh and colleagues ( Westh and Kristensen, 1992 ), with survival of freezing of more than 80% of the body water during exposure to subzero temperatures. (biologists.org)
  • glioblastoma
  • METHODS AND MATERIALS: U-251 MG or U-87 MG human glioblastoma cells were implanted into the brains of athymic rats, and the resulting tumors were irradiated once daily with various doses of ionizing radiation for 5 consecutive days or for 10 days with a 2-day break after Day 5. (isharonline.org)
  • dose
  • Duration of scopy, kinetic energy released per unit mass (kerma) and dose area product (DAP) were assessed as radiation parameters during embolization procedures. (amegroups.com)
  • double strand breaks
  • Here, we show that increased levels of heterochromatin in 3D cell cultures characterized by histone H3 deacetylation and induced heterochromatin protein 1alpha expression result in increased radiation survival and reduced numbers of DNA double strand breaks (DSB) and lethal chromosome aberrations. (biomedsearch.com)
  • reliability
  • These results suggest a rationale for designing new radiation tolerant polymer, paving the way for the effective utilisation of such class of semiconductors in space and avionics applications, and more generally for improving the reliability of this class of materials. (london-nano.com)
  • SiGe electronics have intrinsic tolerance to space radiation and reduce the need for housing the electronics in warm boxes, conserving energy, reducing launch weight and improving reliability. (webwire.com)
  • research
  • Scientists at the London Centre for Nanotechnology, in the research group of Professor Franco Cacialli, in collaboration with Dr Garcia Sakai at ISIS - Neutron and Muon Source, have conducted the first study on the neutron radiation hardening of organic-based devices, which has proven to be a crucial step in assessing material damage following neutron-nucleus collisions. (london-nano.com)
  • influences
  • Understanding the molecular mechanisms by which chromatin structure influences the processing of radiation-induced DNA lesions is of high relevance for normal tissue protection and optimization of cancer therapy. (biomedsearch.com)
  • readily
  • But critters that readily withstand radiation didn't develop their defensive tools out of nowhere after the dawn of the Atomic Age: they built on the exactly the same kind of mechanisms they'd been using for eons to repair damage from oxygen. (blogspot.com)
  • Manufacturing specifications for the radiation-induced losses are not readily available and empirical test data is required for all components in order to optimize the system performance. (spie.org)
  • damage
  • We also estimate an upper and lower bound on the melting temperatures of each glass, then for each glass, we simulate radiation damage cascades at 4 keV. (lboro.ac.uk)
  • He points out that respiration (i.e., oxygen) causes damage that's biochemically the same thing as radiation poisoning, though most air-breathing creatures have evolved mechanisms for coping with oxygen damage that fall apart when subjected to too much of the same kind of damage, too quickly, from radiation. (blogspot.com)
  • treatment
  • b)those comprising technical and physical elements such as check-ins in simulation equipment, radiation equipment, and the daily correct application of the prescribed and planned treatment, and c)systematic reviews of treatment programs, follow-up of cases and obtained results. (sld.cu)
  • NSCLC may potentially be sensitized to radiation treatment by reducing those factors that continuously enhance the repair of damaged DNA. (semanticscholar.org)
  • effects
  • PURPOSE: We investigated the effects of fractionated radiation treatments on the life spans of athymic rats bearing intracerebral brain tumors. (isharonline.org)
  • The ISL71841SEH is a radiation hardened, 32-channel high ESD protected multiplexer that is fabricated using Intersil's proprietary P6SOI (Silicon On Insulator) process technology to mitigate single event effects. (intersil.com)
  • Further study is needed on the measurement, modeling, and effects of UV radiation. (springer.com)
  • and (3) the effects of global climate change on UV radiation. (springer.com)
  • cell
  • We measured stress of hematopoiesis in long-term marrow cultures and radiosensitivity in clonogenic survival curves, as well as comet tail intensity, total antioxidant stores and radiation-induced gene expression in hematopoietic progenitor compared to bone marrow stromal cell lines. (isharonline.org)
  • Early increase of radiation-induced γH2AX foci in a human Ku70/80 knockdown cell line characterized by an enhanced radiosensitivity. (semanticscholar.org)
  • attribute
  • The superior tolerance of PBTTT, which they attribute to its higher crystalline order, is also confirmed by spectroscopic investigations. (london-nano.com)
  • While they admit that this might be because different isotopes could, by being absorbed into the body differently, deliver different doses, they attribute this to birds having adapted to the radiation environment at Chernobyl. (blogspot.com)
  • areas
  • The Economist reports that a team compared birds found in a radiation area (0.5-35 microsieverts/hour) near Fukushima and those found in similar areas near Chernobyl. (blogspot.com)
  • Not perfectly--there's still a decrease in number relative to low-radiation areas. (blogspot.com)
  • better
  • Until recently, it debated whether the radiation tolerance of liquid samples would be better or worse compared to amorphous ice. (nanowerk.com)
  • These results expand our current understanding of freeze tolerance in tardigrades and will lead to a better understanding of their ability to survive subzero temperature conditions. (biologists.org)
  • human
  • ST. LOUIS, -- The Boeing Company [ NYSE: BA ] is part of a university-industry team that received a one-year, $2.75 million NASA contract to further develop a reliable, cost effective electronic technology that helps robotic and human space missions operate in environments of extreme cold and space radiation. (webwire.com)
  • space
  • For space applications, an added requirement is radiation hardening up to 300 krad over 5 to 15 years. (spie.org)
  • Growing concerns regarding the increased levels of UV-B radiation that reach the earth's surface have led to the development of ground- and space-based measurement programs. (springer.com)
  • environment
  • For these reasons, the performance of such a promising class of devices needs to be tested carefully under extreme conditions, such as a harsh-radiation environment. (london-nano.com)
  • rate
  • Considering freeze tolerance in tardigrades as a general feature, we studied the survival rate of nine tardigrade species originating from polar, temperate and tropical regions by cooling them at rates of 9, 7, 5, 3 and 1°C h -1 down to -30°C then returning them to room temperature at 10°C h -1 . (biologists.org)
  • injury
  • In this situation, use of radioprotective compounds that can protect normal tissues against radiation injury are of immense use. (isharonline.org)
  • small
  • The new IFOS gyro uses an open loop configuration, utilizes extremely small diameter radiation-hard fiber with customized all-digital signal processing. (spie.org)