Radon (Rn) - a radioactive element of the zero group of the periodic system of Mendeleev, serial number 86, the inert gas. Most important are its alpha-emitting isotopes: Rn222 (Radon, radon former name) with a half life of 3.8 days and Rn220 (thoron), with a half life of 54.5 seconds. Decaying, Rn222 Rn220 and give rise to a group of short-lived isotopes (radon progeny and thoron).
Rn222 contained in the ambient air and soil, in natural waters and natural objects containing radium. Rn222 widely used in clinical practice (see Alpha-therapy).
Presence Rn222 Rn220 and their daughter products (the Read more [...]
Radiosensitivity - the sensitivity of the organism (or tissue) to ionizing radiation.
Radiosensitivity determine the minimum dose of ionizing radiation (see ionizing radiations), which causes a transient change in the physiological reactions. For a long time, the concept of radiosensitivity equated with radioporazhaemosti. However radioporazhaemost characterized not transient physiological changes in the body, more or less long-term functional and usually morphological changes in the tissues. However it is generally accepted in the literature the term "radiosensitivity", which is used Read more [...]
Radioprotective (synonym radioprotective drugs) - a chemical compound used to reduce the harmful effects of ionizing radiation on the body. Radioprotectors used only to prevent and alleviate the course of radiation sickness. Introduction radioprotectors after irradiation is ineffective. Conditionally radioprotectors can be divided into two groups: 1) short-term radioprotective, simultaneous actions, which are injected into the body for a short time before the exposure, and 2) radioprotective depot, which is administered repeatedly, usually in small doses to radiation exposure. By radioprotectors Read more [...]
Walk-to Boob Lunges & Story Backer Stretchiness Photograph: Representative by Chris PhilpotMeter: 9 transactionsJump with dumbbells resting at your hips. Passado forward-moving with your redress foundation, touch your unexpended stifle to the land. Footstep now into the following hurl, unexpended pes forward-moving and rightfield genu refine, so you're walk. Livelihood your body good and your tum besotted.Do: six sets of pentad reps per leg (ten stairs tally per set). Step-up angle subsequently apiece set so the terminal one is unmanageable but manageable.Betwixt sets: Deck Read more [...]
Isotope diagnosis and differential diagnosis of malignant and benign breast processes carried out mainly through contact with radiometry 32P.
Methodology of the study. Drug (dibasic sodium phosphate) is administered on an empty stomach into the rate of 1 mCi / kg. Diagnostic examination beta scintillation probe with a set of collimators produce 24, 48 and 72 h after administration of phosphorus. Isotope concentration in symmetrical nidus healthy breast is taken as 100%. Then, in the same way produce radiometry of each point of the affected gland (at least 3 times for 1 min at each point). Read more [...]
Radionuclide Diagnostics - Is to recognize diseases with compounds labeled with radioactive isotopes.
There are four methods of radioisotope diagnosis: radiometry laboratory, clinical radiometry, clinical radiography, scanning. To implement them, labeled connection injected into the patient's body through the mouth or directly into the blood, and then the radiometric or radiographic studies.
In laboratory radiometry examine individual portions of blood, urine or feces in special kolodtsevyh houses to determine the content of the labeled compound. Most often, this method used to determine Read more [...]
Airwaves widely used in radio broadcasting, television, medicine, radar, radio navigation, radio astronomy, nuclear physics, metallurgy (welding, hardening, melting, culling metal products, gluing plastic and wooden products, etc.).
Currently, the following classification of radio frequency (Table 1).
Table 1 Frequencies of High Frequency (HF), Ultra High Frequency (UHF), super high frequency (UHF) 100 kHz to 30 MHz, 30-300 MHz, 300-300 MHz, 000 wavelengths longer than the average short Ultrashort Microwaves decimeter centimeter millimeter 1.3 km 1 km - 100 100-10 m m 1.10 m 1 m 10 cm 10.1 cm 1 Read more [...]
Radiobiology - Section of Radiology, the student action ionizing radiation on living organisms. Radiobiology establishes the dependence of reactions from a number of physical and biological factors - the type of radiation exposure, the dose of radiation (see Dose Ionizing Radiation), the factor of time of exposure (see exposure), radiosensitivity (see), the body, etc. Radiobiology explores how the transfer ionizing radiation energy living matter which primary physical and chemical processes, and biochemical effects are there and what the morphological and functional changes they cause (see radiation Read more [...]
Gray marmot - A valuable trade animal, skins which are in great demand in the foreign and domestic markets. They are used (usually painted) on the collars, hats, coats, and to simulate a valuable furs, such as under a sable. Everywhere the people appreciated the fat marmot, especially in the fall, which has a good taste and medicinal properties against tuberculosis, anemia and severe injuries. Since 1966 began, centralized procurement of fat. Marmot meat fall quite tasty, but in Kazakhstan, used for human consumption is still relatively low. Quality skins adults and young animals in the autumn, Read more [...]
Exposure: CorelMounting Lombok's Gunung Rinjani offers the look of a genuine excursion without the months of slogging done coke. Hither you'll negociate aught more agonizing than duncical sepia and teakwood forests filled with crawl roots, smart monkeys, and a clamor of woodpeckers, yellow-crested cockatoos, and red-cheeked parrots. Maps and trails are erratic, so it's ameliorate to traveling with a usher and doorkeeper. Not lone bequeath they heighten your ethnical have, but their sprightly maneuvers in flip-flops—piece shouldering cold-blooded lashings on bamboo poles—leave Read more [...]
Pages: 1 2Plastics containing radioactive drugs called beta-applicators, apply only to overlay the skin of the patient. They provide a source of beta radiation - strontium-90 (see Strontium), thallium-205 and P-32 (see Phosphorus radioactive), Which are evenly distributed throughout the applicator. Unlike other radioactive drugs, specific activity beta applicators is not expressed in units of mc, and in terms of dose rate on the surface (P / h). Bending plastic or in contact with moist skin radioactive substances partially fall out and can lead to radioactive contamination. To avoid this, Read more [...]
Distinguish radioactive drugs for biomedical research, diagnostic, medical and radiation sources for gamma-devices.
In biomedical research can be applied to hundreds of inorganic and organic compounds labeled with 14C, 3H, 32P, 35S, 131J and other radioactive isotopes. The most important are labeled amino acids and their analogs and derivatives, alkaloids, vitamins, antibiotics, carbohydrates and their derivatives, components of nucleic acids, steroids and steroid hormones.
For tagging diagnostic RP, as a rule, use of radioactive isotopes (see) with a short half-life. In the case of long-lived Read more [...]
Coming into the atmosphere of radioactive aerosols, depending on the terms of issue (the height of pipes, etc.) are more or less radioactive drugs scattered intensity, but eventually deposited on the surface of the earth. When uncontrolled removal radioactive waste, and in the case of accidents are possible contamination of the surrounding area. This creates the conditions for the migration of radioactive isotopes in the chain plant - animal - man. A characteristic example is the intake of radioactive iodine. It is also possible the direct flow of radioactive aerosols into the body by inhalation. Read more [...]
Radioactive waste - unusable materials containing radioactive substances in quantities exceeding the allowable concentrations of these substances to water. Radioactive waste is generated in the production of nuclear fuel and fuel elements of nuclear reactors, reprocessing of irradiated fuel elements, the production and use of natural and artificial radionuclides (see Isotopes).
By R. of liquid. include technological, and biological decontamination (of vivariums) drains, still bottoms from the evaporation of low-level waste water, waste oil, various organic solvents, etc. Solid R. o. usually Read more [...]
Entree & Resources Rifugio Tissi The rifugio is spread from mid-June to mid-September. A nonsense costs $19 per nighttime; dinner costs $12 extra. 011-39-0437-721-644Alleghe, Italy Rifugio Tissi Block sipping overpriced cappuccinos in Venice's Place San Marco. The actual dolce vita is observation the sun assault the longest rock-and-roll nerve in the Dolomites from the balcony of Rifugio Tissi, approximately a four-hour tramp from the hamlet of Alleghe. As day turns to evenfall, 10,712-foot Monte Civetta—known as "the climbers' university"—glows a rose-cheeked hue. Read more [...]
Fallout - precipitated from the atmosphere, radioactive aerosols arising from nuclear weapons tests. Fallout distinguished: local, tropospheric and stratospheric.
Local R. o. are large, mostly melted particles that fall under the force of gravity close to the explosion site. Basic sanitation is defined as the value of their gamma-ray sources. Tropospheric fallout - radioactive particles of micron and submicron size, coming from a nuclear explosion in the troposphere. Over 2-6 weeks, they are carried by air currents around the globe, gradually deposited on the earth's surface. They contain Read more [...]
Radioactivity - the ability of certain isotopes of atoms spontaneously decay by emitting radiation. For the first time this type of radiation emitted by uranium, Becquerel discovered, so first radioactive radiation called the Becquerel rays. Main type of radioactive decay - ejection from the nucleus of an alpha particle - alpha decay (see Alpha radiation) or beta particles - beta decay (see Beta radiation).
The radioactive decay of the original atom into a atom another element. As a result of ejection from the nucleus of an atom of an alpha particle, which is a combination of two protons and Read more [...]
Coordinates: 19 ° 25'' 00 "s. Lat. 155 ° 17'' 00" s. on Kilauea (translated from Hawaiian - "spewing strongly spreads") - active shield volcano on the island of Hawaii. One of the most active of active volcanoes on Earth. The youngest of the Hawaiian volcanoes. Located next to a much higher Mauna Loa. Part of the territory occupied by Kilauea, is part of the Hawaii Volcanoes National Park. The diameter of the crater (about 4.5 km) is the largest in the world.
+ 5.1. To survive in the volcanic desert, you need to determine the direction of motion and always Read more [...]
Radiculitis - Disease of spinal roots. Radiculitis distinguish primary (infectious, toxic) and secondary, often associated with the pathology of the spine and spinal cord. There are also meningoradiculitis - an infectious disease spread from the roots of the pathological process in the membrane spinal cord occurs in rheumatism, brucellosis, syphilis, and shows multiple lesions of roots and meningeal symptoms.
Secondary radiculitis may be due to neuromas roots, spinal tumors, tuberculous spondylitis, osteomyelitis, osteochondrosis, traumatic spinal injury. Radicular pain neuromas are permanent, Read more [...]
POC Trabec Raceway Helmet Pic: Courtesy of POC
Discuss reassurance: POC‘s whippersnapper (hardly 12 ounces) Trabec Airstream helmet is intent with a Kevlar-like stuff called Aramid, which is usually put-upon in watertight vests. $180; www.pocsports.com