Results 1 - 10 of 35732
Results 1 - 10 of 35732. Search took: 0.051 seconds
|Sort by: date | relevance|
[en] Full text : Recently in order to protect organisms from the of radiation effect radio protectors have been applied principally concerning to sulfur compounds, aminothioles and indolilalkins. Due to the long-term exploitations and misuse of soil under man-made factor the area of eroded soils has significantly increased. Consequently, cultivation and pasture areas have decreased. Recently the use of synthetic medicinal preparations has increased in order to meet the demands of people. Race mates are not observed in natural substances. The presence of race mates and isomers in human organism causes different diseases. Therefore its required to set new soils in operation and cultivate highly-productive species. The seeds and seed oil have been used as a diuretic, appetitive, hemorrhagic and anti dandruff therapy in folk medicine. The seeds have also been used traditionally for centuries in the Middle East, Far East, and some Mediterranean and European countries for the treatment of deferent ailments such as diabetes, hypertension, cardiac diseases, hemorrhoids, and sexual diseases and a s an abortifacient. Essential oil plants are potential radio protectors. Many plants are applied according to radio protector features of essential oils. Radiotherapy is one of the most common therapies for treating human cancers. Several studies have indicated that irradiation induces reactive oxygen species which play an important role in radiation damage of the cell. In the scientific literature there results as alcoholic and non-alcoholic beverages have been used to treat burns radioactive substances and their removal from the body. Our progress in the preparation of liqueurs, sadofos, soft drinks from plants, will allow the successful use. Clean oil of sea buck thorn, black cumin and basil have strong radio protective properties. The production of these oils without determinant of impurities has been tested in laboratory conditions, the implementations of this technology
[en] Full text:Usually crystals sensitive to X-ray radiation manifest the sensitivity like this at room temperature and low temperatures. Given X-ray detector unlike the familiar ones has a positive temperature coefficient of roentgen sensitivity. It is made of mixed crystals GaSxSe1-x. In suggested GaSxSe1-x for roentgen sensors doped by 0,003 wt percent ytterbium with the increase of temperature from 300 to 410 K the growth of dark current comparing with the roentgen one is slight. As a result the sensitivity of suggested materials to roentgen radiation rises with the increase of temperature in mentioned temperature range. By the values of sensitivity the optimal composition is GaS0,4Se0,6 doped by 0,003 wt. ytterbium. By temperature rise the roentgen current and sensitivity of GaS0,4Se0,6 (Yb) single crystals have been increased. The increase of roentgen sensitivity with the temperature rise is characteristic of all GaSxSe1-x crystal compositions except gallium selenide. In GaSe unlike the rest of crystals by series of GaSxSe1-x solid solutions roentgen sensitivity with the temperature rise has been decreased. It indicated that Yb is included in gallium selenide lattice in different way than in GaSxSe1-x crystals of other composition. By maximum value of radiation power in GaS0,4Se0,6(Yb) detectors at T=410 K roentgen current saturation has not been observed. Suggested detectors GaS0,4Se0,6(Yb) allow doses from 1.10-4 up to 700 R/min to be measured. The investigations carried out for 8 months show that temperature dependence of roentgen sensitivity in GaS0,4Se0,6(Yb) having a sufficient stability does not change. For crystals of composition x=0,4 the roentgen sensitivity at T=300 K, 343 K, 410 K and operating voltage 0,8 has the values 50,70 and 83 mkA.min/R, respectively. Measurements at different temperatures have been carried out at direct-current voltage (V=0,8V), constant intensity of roentgen radiation (E=15 R/min) and anode current on X-ray tube J=3mA. Parameters of suggested detectors enable them to be used in medicine: clinic, intracavitary dosimetry, beam therapy and other fields where penetrating radiation at T=300-410K is used including industrial inspection, radiation safety service.
[en] In order to improve the knowledge of Colombian flora, particularly that belonging to the llanos orientales region, Strychnos schultesiana Krukoff was chosen for a chemical composition in-depth study to establish a potential utility in medicinal or industrial fields. For this analysis, a preliminary phytochemical study of three organs of the plant -steams, seeds and leafs- was made; the purpose was to find the main secondary metabolites associated with biological activities: alkaloids, flavonoids, tannins, saponins, antracenic derivates, steroids, coumarins, cardiotonic glycosides and terpenic lactones. The main compounds were alkaloids. This fact was expected, as this species belongs to the genus Strhychnos, widely known because of its high alkaloid content. In addition, the existence of flavonoids in the studied organs of the plant is very remarkable. These compounds are well known as scavengers, useful in prevention of diseases related with oxidative processes. Finally, the results of this work are very useful as a first approach to the knowledge and utility of the vegetal species found in this location. Furthermore, this plant has big agronomical advantages related with the culture establishment, which improves the rational use of natural resources in our country, as a means of regional and national development.
[en] Guidelines conduce to establish consistent standards of therapy and contribute to the orientation and safeguard of the attending physician. Peripheral arterial disease (PAD) may be classified according to its stage as intermittent claudication, chronic critical limb ischemia or acute limb ischemia. Since these diseases are common and life-threatening, current guidelines are of major interest for the attending physician, not least because of forensic reasons. This overview describes the current principles of diagnosis and therapy as well as recent developments in peripheral endovascular intervention. Current national and international guidelines, particularly the Transatlantic Intersociety Consensus (TASC), were taken into account. (orig.)
[de]Leitlinien dienen zur Etablierung einheitlicher Behandlungsstandards und tragen zur Orientierung und Absicherung des behandelnden Arztes bei. Die periphere arterielle Verschlusskrankheit (pAVK) laesst sich in die Stadien Claudicatio intermittens, chronisch-kritische Ischaemie und akute Ischaemie unterteilen. Da diese Krankheitsbilder haeufig und auch vital bedrohlich auftreten, sind aktuelle Leitlinien zur Diagnostik und stadiengerechten Therapie fuer den behandelnden Arzt auch aus forensischen Gruenden von grosser Bedeutung. Die vorliegende Uebersicht stellt aktuelle Prinzipien der Diagnostik und Therapie sowie aktuelle Entwicklungen auf dem Gebiet der peripheren Gefaessintervention unter Beruecksichtigung aktueller nationaler und internationaler Leitlinien, insbesondere des Transatlantic Intersociety Consensus (TASC) dar. (orig.)
[en] X-radiography and ultrasound imaging are well established and widely used in veterinary practice, but it is not the same situation with radioisotope imaging. In veterinary practice the above mentioned methods of nuclear medicine are developed only in two countries in Europe. That is not doubt due, so bar, to the difficulties in obtaining satisfactory supply of radioisotopes and to the relatively high cost of scanning equipment. However, in collaboration with the Department of Radiation Protection and Nuclear Medicine of the Medical Faculty in Zagreb, Croatia, we have chance to develop the use of those methods in clinical veterinary practice in Zagreb. That is way in this paper an overview of the application of radioisotopes imaging in veterinary medicine is given. In small animals skeletal changes, lung perusions, brain lesions, space occupying lesions in the liver and its function and hearth function can be usefully searched by a gamma camera and its associated computer. In equine practice scintigraphy of bones, liver, hearth, pulmonary circulation and ventilation is described. The largest amount of radioactive material is used during gamma camera scanning of the skeletons of horses. In this cases the radiation dose 1-2 m from the animal is approximately 3 μSv/h. That is why the protection of personal involved in radioisotope scanning in veterinary medicine must be also regulated by low of radiation protection. Also, the animals should be confined to a controlled area for 2-3 days after scanning before being returned to their owners. After this period the area must be cleaned. (author)
[en] Good research practice is important to the scientific community. An awareness of what constitutes poor practice is important. Various types of research misconduct are defined in this article. The extent of research misconduct in the field of radiology has been assessed by contacting five English language radiology journals. Redundant or duplicate publication has been reported infrequently, Radiology (1), American Journal of Roentgenology (3), Clinical Radiology (3), British Journal of Radiology (2) and European Radiology (1). The issue of how the radiology community might tackle research misconduct is discussed with reference to guidance from the Medical Research Council, the Wellcome Trust and the Committee of Publication Ethics
[en] Nowadays SEIB has members of Spanish research groups in Bioelectronics, Physiological System Modelization, Telemedicine, Biomechanics, Biosignal Processing, Bioinformatics,…, besides other members froms Health institutions and companies. The main public activity of SEIB is the organization of a annual congress (CASEIB) that presents scientific papers in order to diseminate into research groups, students, companies and institutions the latest works and advances of Spanish researches that year. Together with this Conference, the Main Meeting of the Society and the Conference of the Thematic Network on Biomedical Engineering (REDINBIO) are hold, as a meeting point of the researchers belonging to this network.