Hersteller-Artikelnummer: RJH-TS120W230C/XE/R7 - Halogenlampe Xenon klar RJH-TS120W230C/XE/R7 Energieeffizienzklasse D, Energieeffizienzklassen-Spektrum A++ bis E, Lampenleistung 120W, Lampenspannung 230 ... 230V, Lichtstrom 2250lm, Sockel R7s, Lampenform Röhre, zweiseitig gesockelt, Durchmesser 12mm, Gesamtlänge 114,2mm, UV-Schutz, Ausführung klar, Farbtemperatur 2950K, Gewichteter Energieverbrauch in 1.000 Stunden 120kWh, Mittlere Nennlebensdauer 2000h, Hochvolt-Halogenlampe klar, Röhrenform, Netzspannung 230V, zweiseitig gesockelt, Sockel R7s, stufenlos dimmbar, 2 000h mittlere Lebensdauer 𪛤
Hersteller-Artikelnummer: RJH-TS160W230C/XE/R7 - Halogenlampe Xenon klar RJH-TS160W230C/XE/R7 Energieeffizienzklasse C, Energieeffizienzklassen-Spektrum A++ bis E, Lampenleistung 160W, Lampenspannung 230 ... 230V, Lichtstrom 3160lm, Sockel R7s, Lampenform Röhre, zweiseitig gesockelt, Durchmesser 12mm, Gesamtlänge 114,2mm, UV-Schutz, Ausführung klar, Farbtemperatur 2950K, Gewichteter Energieverbrauch in 1.000 Stunden 160kWh, Mittlere Nennlebensdauer 2000h, Hochvolt-Halogenlampe klar, Röhrenform, Netzspannung 230V, zweiseitig gesockelt, Sockel R7s, stufenlos dimmbar, 2 000h mittlere Lebensdauer 𪛤
Hersteller-Artikelnummer: RJH-TS230W230/C/XE/R - Halogenlampe Xenon klar RJH-TS230W230/C/XE/R Energieeffizienzklasse C, Energieeffizienzklassen-Spektrum A++ bis E, Lampenleistung 230W, Lampenspannung 230 ... 230V, Lichtstrom 5000lm, Sockel R7s, Lampenform Röhre, zweiseitig gesockelt, Durchmesser 12mm, Gesamtlänge 114,2mm, UV-Schutz, Ausführung klar, Farbtemperatur 2950K, Gewichteter Energieverbrauch in 1.000 Stunden 230kWh, Mittlere Nennlebensdauer 2000h, Hochvolt-Halogenlampe klar, Röhrenform, Netzspannung 230V, zweiseitig gesockelt, Sockel R7s, stufenlos dimmbar, 2 000h mittlere Lebensdauer 𪛤
High Quality Content by WIKIPEDIA articles! A nuclear poison, also called a neutron poison is a substance with a large neutron absorption cross-section in applications, such as nuclear reactors, when absorbing neutrons is an undesirable effect. However neutron-absorbing materials, also called poisons, are intentionally inserted into some types of reactors in order to lower the high reactivity of their initial fresh fuel load. Some of these poisons deplete as they absorb neutrons during reactor operation, while others remain relatively constant. The capture of neutrons by short-halftime fission products is known as reactor poisoning, neutron capture by long-lived or stable fission products is called reactor slagging. Some of the fission products generated during a nuclear reaction have a high neutron absorption capacity, such as xenon-135 (Xe-135, 2,000,000 barns) and samarium-149 (Sm-149, 74,500 ). Because these two fission product poisons remove neutrons from the reactor, they will have an impact on the thermal utilization factor and thus the reactivity. The poisoning of a reactor core by these fission products may become so serious that the chain reaction comes to a standstill.
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Neutron absorbers are isotopes of certain elements that absorb free neutrons creating heavier isotopes of the same element. The most prolific neutron absorbers are elements that become stable by absorbing a neutron such as xenon-135 (Xe-135, half life 9.1 hours), which absorbs a neutron to become Xe-136. Xe-135 is formed in nuclear reactors through the splitting of actinide metals indirectly as a decay product of iodine-135 (I-135), which also has a short half-life. Other isotopes that are major neutron absorbers include Helium-3 (He-3), which becomes tritium and boron-10 (B-10) which becomes Li-7. Samarium-149 formed during the fission process is also a highly effective neutron absorber, with its very long half life it last effectively forever in the fuel until it absorbs a neutron and transmutes into Sm-150, which is stable. Other neutron absorbers used in nuclear power plants include cadmium and gadolinium, both of which consist of mixed isotopes some of which are voracious neutron absorbers.
High Quality Content by WIKIPEDIA articles! The noble gases (often mistakenly referred to as inert gases) are a group of chemical elements with very similar properties: under standard conditions, they are all odorless, colorless, monatomic gases, with a very low chemical reactivity. The six noble gases that occur naturally are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and the radioactive radon (Rn).For the first six periods of the periodic table, the noble gases are exactly the members of group 18 of the periodic table. However, this no longer holds in the seventh period (due to relativistic effects): The next member of group 18, ununoctium, is probably not a noble gas. Instead, group 14 member ununquadium exhibits noble-gas-like properties.
Characterized by destruction of distal parenchymal airspaces, emphysema is a good candidate for the application of new magnetic resonance (MR) diffusion imaging techniques that use hyperpolarized helium-3 (He-3) and xenon-129 (Xe-129) gases to probe the restricted diffusion of gas in the lung. Besides the importance of detecting and diagnosing emphysema at early stages, which could reduce disease severity and maximize the effectiveness of treatment, the scientific community also needs a better biomarker for emphysema with a higher sensitivity than the gold standard, pulmonary function tests, and without the ionizing radiation of computed tomography. A primary goal of this project was to create a reproducible animal model of emphysema disease, and with it demonstrate the efficacy, sensitivity and reproducibility of hyperpolarized He-3 and Xe-129 diffusion (ADC) measurements. Both He-3 and Xe-129 ADC measurements demonstrated excellent reproducibility, and strong correlations were found between these values and the distal airspace size as measured by lung morphometry. The last goal of this project was to investigate the characteristics of diffusion sensitization based on multiple bipolar gradient waveforms, which have the potential to extend access to much shorter diffusion times.
Thermally and hyperpolarized Xe-129 NMR spectroscopy are used to investigate gas transfer and adsorption between aqueous and lipid bilayer phases via changes in the Xe-129 chemical shift. The large electron cloud of the xenon atom is very sensitive to even slight modifications in its local environment, manifesting as changes in the experimentally observed chemical shift value. Thermodynamic and kinetic information are extracted by monitoring this shift with changing external variables and fit to a mathematical model in order to extract pertinent parameters. Partitioning behavior as related to increasing molecular stress and changing lipid morphology is studied in addition to the potential existence of intermediate lipid phases. Lastly, Anodic Aluminum Oxide (AAO) substrate was utilized to stabilize bilayers in the magnetic field, facilitating the study of Xe diffusivity between phases using 2D-exchange NMR methods. Results are discussed in context of anesthetic action and the lateral pressure profile.
High Quality Content by WIKIPEDIA articles! All syntheses start from the perxenates, which are accessible from the xenates through two methods. One is the disproportionation of xenates to perxenates and xenon: 2 XeO2 4 XeO4 6 + Xe + O2 The other is oxidation of the xenates with ozone: 2 XeO2 4 + 4 e + 2 O3 2 XeO4 6 + 2 O2 Barium perxenate is reacted with sulfuric acid and the unstable perxenic acid is dehydrated to give xenon tetroxide:Ba2XeO6 + 2 H2SO4 2 BaSO4 + (H4XeO6 2 H2O + XeO4) The unstable perxenic acid slowly undergoes a disproportionation reaction to the xenic acid and oxygen:H4XeO6 1/2 O2 + H2XeO4 + H2O