This study deals with microwave properties of glass foams prepd. from glass industrial waste. Two types of cullets (one from soda-lime silicate glasses and the other from cathodic ray tubes - CRT) ...have been combined with different foaming agents (C, SiC, AlN). Glass foams electromagnetic properties are primarily detd. by their apparent d. as well as by the nature of the foaming agent. Foams, blown with carbon as foaming agent, present high dielec. loss and could be used as green electromagnetic absorbent in building industry.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UL, UM, UPCLJ, UPUK
Background. Diarrhea is the most common illness associated with international tourism. We evaluated the efficacy of a probiotic preparation of nonviable Lactobacillus acidophilus (hereafter referred ...to as LA) for the prevention of traveler's diarrhea. Methods. We conducted a randomized, double-blind, controlled trial. Travelers were randomized to receive either LA or placebo twice daily from 1 day before their departure to 3 days after their return. On each day of the trip and the week following the return, travelers had to record the number and consistency of stools and their adherence to the treatment. Diarrhea was defined as ⩾3 unformed stools in a 24-h period. Results. From January 2001 to September 2004, a total of 174 subjects were randomized to each treatment group. Half of the travelers went to West Africa, and organized tours or backpacking were the most common modes of traveling. The incidence of diarrhea did not differ between the 2 groups; it was 61.4 cases per 100 person-months in the LA group (95% confidence interval CI, 44.1–85.5) and 43.4 cases per 100 person-months in the placebo group (95% CI, 30.0–62.9) (P = .14). Adjustment for travel duration and other variables did not reveal any difference between the 2 groups (adjusted hazard ratios comparing the LA and placebo groups were 1.43 95% CI, 0.87–2.36 in an intent-to-treat analysis and 1.38 95% CI, 0.79–2.39 in an efficacy analysis). Conclusions. There was no beneficial effect of treatment with LA for the prevention of travelers' diarrhea. More studies are required to assess the efficacy of other specific probiotics (e.g., a Lactobacillus rhamnosus GG preparation) for preventing traveler's diarrhea.
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BFBNIB, NUK, PNG, UL, UM, UPUK
Purpose: Single-neutron adding data was collected in order to determine the distribution of the single-neutron strength of the \(0f_{7/2}\), \(1p_{3/2}\), \(1p_{1/2}\) and \(0f_{5/2}\) orbitals ...outside of \(Z=16, N=18\), \(^{34}\)S. Methods: The \(^{34}\)S(\(d\),\(p\))\(^{35}\)S reaction has been measured at 8 MeV/u to investigate cross sections to excited states in \(^{35}\)S. Outgoing proton yields and momenta were analyzed by the Super-Enge Split-Pole Spectrograph in conjunction with the CeBrA demonstrator located at the John D. Fox Laboratory at Florida State University. Angular distributions were compared with Distorted Wave Born Approximation calculations in order to extract single-neutron spectroscopic overlaps. Results: Spectroscopic overlaps and strengths were determined for states in \(^{35}\)S up through 6~MeV in excitation energy. Each orbital was observed to have fragmented strength where a single level carried the majority. The single-neutron centroids of the \(0f_{7/2}\), \(1p_{3/2}\), \(1p_{1/2}\) and \(0f_{5/2}\) orbitals were determined to be \(2360^{+90}_{-40}\)~keV, \(3280^{+80}_{-50}\)~keV, \(4780^{+60}_{-40}\)~keV, and \(\gtrsim7500\)~keV, respectively. Conclusion: A previous discrepancy in the literature with respect to distribution of the neutron \(1p_{1/2}\) strength was resolved. The integration of the normalized spectroscopic strengths, up to 5.1~MeV in excitation energy, revealed fully-vacant occupancies for the \(0f_{7/2}\), \(1p_{3/2}\), and \(1p_{1/2}\) orbitals, as expected. The spacing in the single-neutron energies highlighted a reduction in the traditional \(N=28\) shell-gap, relative to both the \(1p\) spin-orbit energy difference (\(N=32\)) and the lower limit on the \(N=34\) shell spacing.
We report on a highly selective experimental setup for particle-$\gamma$
coincidence experiments at the Super-Enge Split-Pole Spectrograph (SE-SPS) of
the John D. Fox Superconducting Linear ...Accelerator Laboratory at Florida State
University (FSU) using fast CeBr$_3$ scintillators for $\gamma$-ray detection.
Specifically, we report on the results of characterization tests for the first
five CeBr$_3$ scintillation detectors of the CeBr$_3$ Array (CeBrA) with
respect to energy resolution and timing characteristics. We also present
results from the first particle-$\gamma$ coincidence experiments successfully
performed with the CeBrA demonstrator and the FSU SE-SPS. We show that with the
new setup, $\gamma$-decay branching ratios and particle-$\gamma$ angular
correlations can be measured very selectively using narrow excitation energy
gates, which are possible thanks to the excellent particle energy resolution of
the SE-SPS. In addition, we highlight that nuclear level lifetimes in the
nanoseconds regime can be determined by measuring the time difference between
particle detection with the SE-SPS focal-plane scintillator and $\gamma$-ray
detection with the fast CeBrA detectors. Selective excitation energy gates with
the SE-SPS exclude any feeding contributions to these lifetimes.
Background Half of all lower limb deep vein thromboses (DVT) are distal DVT that are equally distributed between muscular calf vein thromboses (MCVT) and deep calf vein thromboses (DCVT). Despite ...their high prevalence, MCVT and DCVT have never been compared so far, which prevents possible modulation of distal DVT management according to the kind of distal DVT (MCVT or DCVT). Methods Using data from the French, multicenter, prospective observational OPTimisation de l'Interrogatoire dans l'évaluation du risque throMbo-Embolique Veineux (OPTIMEV) study, we compared the clinical presentation and risk factors of 268 symptomatic isolated DCVT and 457 symptomatic isolated MCVT and the 3-month outcomes of the 222 DCVT and 390 MCVT that were followed-up. Results During the entire follow-up, 86.5% of DCVT patients and 76.7% of MCVT patients were treated with anticoagulant drugs ( P = .003). MCVT was significantly more associated with localized pain than DCVT (30.4% vs 22.4%, P = .02) and less associated with swelling (47.9% vs 62.7%, P < .001). MCVT and DCVT patients exhibited the same risk factors profile, except that recent surgery was slightly more associated with DCVT (odds ratio, 1.70%; confidence interval, 1.06-2.75), and had equivalent comorbidities as evaluated by the Charlson index. At 3 months, no statistically significant difference was noted between MCVT and DCVT in death (3.8% vs 4.1%), venous thromboembolism recurrence (1.5% vs 1.4%), and major bleeding (0% vs 0.5%). Conclusion Isolated symptomatic MCVT and DCVT exhibit different clinical symptoms at presentation but affect the same patient population. Under anticoagulant treatment and in the short-term, isolated distal DVT constitutes a homogeneous entity. Therapeutic trials are needed to determine a consensual mode of care of MCVT and DCVT.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
We report on a highly selective experimental setup for particle-\(\gamma\) coincidence experiments at the Super-Enge Split-Pole Spectrograph (SE-SPS) of the John D. Fox Superconducting Linear ...Accelerator Laboratory at Florida State University (FSU) using fast CeBr\(_3\) scintillators for \(\gamma\)-ray detection. Specifically, we report on the results of characterization tests for the first five CeBr\(_3\) scintillation detectors of the CeBr\(_3\) Array (CeBrA) with respect to energy resolution and timing characteristics. We also present results from the first particle-\(\gamma\) coincidence experiments successfully performed with the CeBrA demonstrator and the FSU SE-SPS. We show that with the new setup, \(\gamma\)-decay branching ratios and particle-\(\gamma\) angular correlations can be measured very selectively using narrow excitation energy gates, which are possible thanks to the excellent particle energy resolution of the SE-SPS. In addition, we highlight that nuclear level lifetimes in the nanoseconds regime can be determined by measuring the time difference between particle detection with the SE-SPS focal-plane scintillator and \(\gamma\)-ray detection with the fast CeBrA detectors. Selective excitation energy gates with the SE-SPS exclude any feeding contributions to these lifetimes.
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