Measurement of the W-boson mass ABE, F; AMIDEI, D; BEHRENDS, S ...
Physical review letters,
10/1990, Letnik:
65, Številka:
18
Journal Article
Recenzirano
We have determined {ital m}{sub {ital W}}=79.91{plus minus}0.39 GeV/{ital c}{sup 2} from an analysis of {ital W}{r arrow}{ital e}{nu} and {ital W}{r arrow}{mu}{nu} data from the Collider Detector at ...Fermilab in {ital {bar p}p} collisions at a c.m. energy of {radical}{ital s} =1.8 TeV. This result, together with the world-average {ital Z} mass, determines the weak mixing angle to be sin{sup 2}{theta}{sub {ital W}}=0.232{plus minus}0.008. Bounds on the top-quark mass are discussed.
In the current study we aim to investigate the effects of vitamin C and profol on red blood cell deformability in diabetic rats.
Twenty- eight Wistar Albino rats were included in the study after ...streptozocin (60 mg/kg) treatment for 4 weeks of observation for diabetes presence. Twenty-eight rats were allocated to 4 groups. In group DP (n = 7) 150 mg.kg-1 of propofol was injected intraperitoneally. In group DP-vit C (n = 7) rats 100 mg/kg of vitamin C (Ascorbic acid, Redoxon® 1000 mg/5 mL - Roche) were applied one hour before administrating 150 mg.kg-1 of propofol, while rats in control group (n = 7), and diabetic control group (n = 7) received intraperitoneally physiological saline. Deformability measurements were achieved by using erythrocyte suspensions with hematocrit level of 5 % in PBS buffer.
Erythrocyte deformability was significantly higher in diabetic control group than in control and vitamin C plus propofol groups (p = 0.00, p = 0.025, respectively). Erythrocyte deformability indexes were found similar in control group and vitamin C plus propofol group (p = 0.949). Relative resistance was increased in diabetic rat model.
Erythrocyte deformability was damaged in rats with diabetes. This injury might lead to further problems in microcirculation. Application of propofol did not alter red cell deformability in diabetic rats. Vitamin C supplementation seems to reverse those negative effects and variations in erythrocyte deformability (Fig. 2, Ref. 57).
We describe the status of our effort to realize a first neutrino factory and the progress made in understanding the problems associated with the collection and cooling of muons towards that end. We ...summarize the physics that can be done with neutrino factories as well as with intense cold beams of muons. The physics potential of muon colliders is reviewed, both as Higgs factories and compact high-energy lepton colliders. The status and time scale of our research and development effort is reviewed as well as the latest designs in cooling channels including the promise of ring coolers in achieving longitudinal and transverse cooling simultaneously. We detail the efforts being made to mount an international cooling experiment to demonstrate the ionization cooling of muons.
The rate capability of solid state photomultipliers has been studied for various combinations of temperature and bias voltage. Using a 635
nm laser diode flasher measurements were made up to a single ...photoelectron rate of 12MHz. Only a slight decrease, less than several per cent, of the quantum efficiency was observed at this rate whereas a 10% drop of the gain was observed.
Earrings are very popular jewelry and ear piercing is performed in very young children. Complications that have been reported in the literature are mainly dermatologic, ranging from embedded foreign ...body to pressure sores in the post-auricular region. During panoramic radiographic evaluation, precise examination of this area can be used to determine the presence of foreign bodies. In this case, a patient referred to our clinic with panoramic film for an impacted third molar who was not aware of an earring clip impacted in her ear lobe is presented.
Breakdowns were optically and electronically observed in drift tubes and drift chambers. They occur at a critical gain for given intensity in a gas mixture when ultraviolet photons are not completely ...quenched. It was observed that the breakdowns depended critically on average current for a given gas mixture independent of the size of the drift tubes used. Using 4.6% ethyl alcohol vapor mixed into 50/50 argon ethane gas, breakdowns are eliminated up to 7 μA average current drawn by pulses on a 1 cm section of an anode wire under an intense source. Pulses with an avalanche size of 106 electrons, rates above 106 pulses per centimeter per wire may be obtained with the elimination of breakdowns.
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