Sentences with phrase «as radiation damage»

In this study, the scientists showed that subtle differences between the two ceramics they investigated led to drastically different structural and mechanical response as radiation damage accumulates.

Not exact matches

This changes a lot of what scientists thought they knew about how water bears deal with radiation, as they were previously thought to have proteins that repaired damaged DNA, rather than proteins that halt damage altogether.

@Chad: I. Mutations in DNA sequences generally occur through one of two processes: A. Environmental factors: DNA damage from environmental agents such as ultraviolet light (sunshine), nuclear radiation or certain chemicals B. Mistakes that occur when a cell copies its DNA in preparation for cell division.

In addition to experimental research on cancer, there are over 1000 peer reviewed, published papers showing other harmful biological effects from microwave radiation exposure such as damage to sperm, pregnancy and nervous systems.»

If a mom is going through cancer treatments such as chemotherapy or radiation, those drugs can severely damage the growth of the baby.

But while chemotherapy and radiation are associated with temporary changes, such as hair loss and tissue swelling, the treatments can have an unseen, permanent effect: infertility due to irreparably damaged sperm or egg cells.

In tomorrow's issue of the Proceedings of the National Academy of Sciences, two researchers point the finger at chemical changes in the molecule transurocanic acid — which at one time was thought to protect against ultraviolet (UV) radiation damage — as a possible controlling agent in the process.

Among those are proteins that contribute to the production of seeds, as well as proteins involved in defending cells from heavy metal and radiation damage.

The detector developed at UNH, known as DoSEN, short for Dose Spectra from Energetic Particles and Neutrons, measures and calculates the absorbed dose in matter and tissue resulting from the exposure to indirect and direct ionizing radiation, which can change cells at the atomic level and lead to irreparable damage.

Even as far away as Mars, one of the instruments aboard the Odyssey spacecraft — an instrument designed to assess radiation risk to humans — was damaged.

Current astronauts are not as exposed to the damaging effects of radiation, Davis says, because the International Space Station flies in an orbit low enough that the Earth's magnetic field continues to provide protection.

Conventional transplant conditioning employs radiation and / or high - dose cytotoxic drugs (also known as alkylators) to destroy the bone marrow and blood and immune cells; it also causes widespread cellular damage throughout the body.

At the same time, avoiding radiation and alkylators — which cause widespread cellular damage throughout the body — should reduce the risk of long - term HSCT - related complications, such as organ failure and cancer.

Laboratory experiments on animals indicate that as doses decrease, less and less damage escapes DNA - repair mechanisms, says Yoshihisa Matsumoto, a radiation biologist at the Tokyo Institute of Technology.

According to previous simulations, UV - B radiation at the end of the Permian may have increased from a background level of 10 kilojoules (just above current ambient levels) to as much as 100 kilojoules, due to large concentrations of ozone - damaging halogens spewed from volcanoes (SN: 1/15/11, p. 12).

In extreme cases, the application of X-rays is limited by these side effects, known as «radiation damage».

These pigments protect against the damaging effects of solar radiation, but as Cook discovered, they also give cryoconite grains impressive ice - carving powers.

Astrobiologists, who will be presenting their work at the European Planetary Science Congress (EPSC) 2013 in London on Monday 9 September, have shown that Raman spectroscopy can be used to detect micro-organisms even after they have been damaged by exposure to very high levels of radiation, as is encountered on the Martian surface.

After the catastrophe of 11 March 2011, the first task for robots was to survey damage, radiation, and variables such as temperature and humidity in areas that were too hazardous for workers.

If the deep microbes spend as much on maintenance as surface microbes do, he says - repairing radiation damage to their DNA, keeping their membranes intact — they should have nothing left for the microbial prime directive: divide and multiply.

Ionizing radiation damages cells by producing very reactive compounds known as free radicals.

The ozone layer helps shield Earth from potentially harmful ultraviolet radiation that can cause skin cancer, cataracts, and suppress immune systems, as well as damage plants.

But as Resnikoff pointed out, many of the radiation sensors are located on the nuclear plant's site and may well have been damaged during or since the March 11 magnitude 9.0 earthquake.

For example, earlier research suggested that Neanderthal DNA influenced skin cells known as keratinocytes that help protect the skin from environmental damage such as ultraviolet radiation and germs.

That makes it useful for UV - blocking windows and sunglasses, as well as for protecting X-ray equipment from radiation damage.

This type of exploration — muon radiography — is perfect for sensitive historical sites as it uses naturally occurring radiation and doesn't damage the structure.

One possibility, says Chao, is that high numbers of CNVs somehow cause DNA damage by making dads less able to protect themselves from environmental insults such as radiation.

But until he understands how the cells are stressed in the first place, he won't know much: «We frankly don't have a clue as to how much microwave radiation is needed to cause irreversible damage to cellular proteins.

Damage of the kind duplicated in the laboratory occurs naturally after exposure to radiation and perhaps also after ingestion of toxic chemicals such as those used in chemotherapy.

The ozone layer acts as Earth's sunscreen by absorbing harmful ultraviolet radiation from incoming sunlight that can cause skin cancer and damage plants, among other harmful effects to life on Earth.

During such hybridisation events, and after other genetic disruptions suffered by plants, such as damage to chromosomes by radiation, there are extensive rearrangements of plant DNA (Gorbunova and Levy 1999, Shirley and others 1992).

Other recent research areas have included the structural characterization of lattice - mismatched epitaxial metal films on oxide substrates for radiation damage studies, and the development of new complex oxides as high temperature, radiation - resistant piezoelectrics for use in advanced in situ sensors.

The ozone layer helps shield life on the planet from potentially harmful ultraviolet radiation that can cause skin cancer, cataracts, and suppress immune systems, as well as damage plant life.

Both chemotherapy and radiation damage healthy cells, leading to common side effects such as hair loss and nausea / vomiting.

In humans, melanocytes function to protect skin from damaging environmental stresses such as ultraviolet radiation exposure (UVR).

In humans, these cells function to protect skin from damaging environmental stresses such as ultraviolet radiation exposure.

We simulate a CCD readout with CTI such as that caused by charged particle radiation damage.

Damage to the testes can result from infections such as mumps, treatments for cancer such as radiation or chemotherapy, trauma, or surgery.

Melanin molecules absorb ultraviolet radiation from the sun, protecting you from tissue damage as a result of sun exposure.

Chemotherapy and radiation can have side effects such as loss of appetite, nausea, vomiting, diarrhoea, tingling as a result of nerve damage, physical fatigue, mental fatigue, muscular pain, joint and pain and other forms of pain.

As the plant matures and grows this bright red fruit, it has to develop these powerful antioxidants to protect the fruit from the damage caused by the powerful doses of the sun's radiation and photosynthesis.

Radiation damage has been shown to happen in cancer patients who receive radiation therapy as a form of treatment, though it may also happen if the person is exposed to nuclear power, nuclear fallout from nuclear weapons, and x-ray imaging.

UV radiation causes free - radical activity in the skin cells, which triggers inflammation as well cellular DNA damage (which can lead to cancer).

Orientin and vicenin are two water - soluble flavonoids that have been of particular interest in basil, and in studies on human white blood cells; these components of basil protect cell structures as well as chromosomes from radiation and oxygen - based damage.

Niacinamide also acts as an antioxidant and has been studied for its effectiveness in helping to support healthy cartilage and joint function, helping to promote joint comfort and mobility, and helping to provide support for healthy skin in various ways including protection from the damaging effects of ultraviolet radiation.

And, as we all know, plants contain so much potential for optimal human health because they help us withstand a host of destructive forces, such as radiation, oxidative damage and chemical toxins that could be lethal — if ignored.

Olive leaf extract may increase your skin's resistance to UV radiation, preventing burns and damage and effectively acting as a natural sunscreen.

According to Mark Sircus, in Transdermal Magnesium Therapy, a deficiency of magnesium increases free radical generation in the body and «causes glutathione loss, which is not affordable because glutathione helps to defend the body against damage from cigarette smoking, exposure to radiation, cancer chemotherapy, and toxins such as alcohol and just about everything else.»

The past century has unveiled a plethora of preclinical data that has suggested the potential of a ketogenic diet as an aid in cancer treatment.7, 8 The benefits of a ketogenic diet, and dietary manipulation in general, may be a potent adjunct to current cancer treatments by synergistically working with chemotherapy and radiation therapy to starve cancer cells, leaving them more susceptible to damage from these treatments.7 - 10

Polyphenols, including flavonoids, flavonols, catechins, and stilbenes are present in the human diet in plant materials, where they act as antioxidants and protect the plant from damage from bacteria, fungi, and ultraviolet radiation.