1,064 research outputs found
Investigations of Concentrated (p, pi ̄ ) Reaction Strength on Ca Isotopes
This research was sponsored by the National Science Foundation Grant NSF PHY 87-1440
Investigations of Concentrated (p,Pi-) Reaction Strength on C and Ca Isotopes
This work was supported by the National Science Foundation Grant NSF PHY 81-14339 and by Indiana Universit
Electronic and Magnetic Properties of Febr2
Electronic and magnetic (e-m) properties of FeBr2 have been surprisingly well
described as originating from the Fe2+ ions and their fine electronic
structure. The fine electronic structure have been evaluated taking into
account the spin-orbit (s-o) coupling, crystal-field and inter-site
spin-dependent interactions. The required magnetic doublet ground state with an
excited singlet at D=2.8 meV results from the trigonal distortion. This effect
of the trigonal distortion and a large magnetic moment of iron, of 4.4 mB, can
be theoretically derived provided the s-o coupling is correctly taking into
account. The obtained good agreement with experimental data indicates on
extremaly strong correlations of the six 3d electrons in the Fe2+ ion yielding
their full localization and the insulating state. These calculations show that
for the meaningful analysis of e-m properties of FeBr2 the spin-orbit coupling
is essentially important and that the orbital moment (0.74 mB) is largely
unquenched (by the off-cubic trigonal distortion in the presence of the
spin-orbit coupling).Comment: 11 pages in RevTex, 5 figure
Positive Pion Production from the Bombardment of 11-B, 12-C, and 40-Ca by 146-159 MeV Polarized Protons
Supported by the National Science Foundation and Indiana Universit
The 3s Proton Occupancy in 206-Pb
This research was sponsored by the National Science Foundation Grant NSF PHY 87-1440
Measurement of Charged Pion Yields from Nuclei in (p,Pi+) Reactions Very Near Threshold
This work was supported by National Science Foundation Grants PHY 76-84033A01, PHY 78-22774, and Indiana Universit
Test of the DWBA Description of Transfer Reactions at Intermediate Energies by Measuring a Complete Set of Single Nucleon Transfer and Elastic Scattering Data
This research was sponsored by the National Science Foundation Grant NSF PHy 87-1440
Test of the DWBA Description of Transfer Reactions at Intermediate Energies by Measuring a Complete Set of Single Nucleon and Elastic Scattering Data
This research was sponsored by the National Science Foundation Grant NSF PHY 87-1440
Epidemiology of chronic inflammatory demyelinating polyradiculoneuropathy in The Netherlands
Chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) is a rare but disabling disorder that often requires long‐term immunomodulatory treatment. Background incidence rates and prevalence and risk factors for developing CIDP are still poorly defined. In the current study, we used a longitudinal population‐based cohort study in The Netherlands to assess these rates and demographic factors and comorbidity associated with CIDP. We determined the incidence rate and prevalence of CIDP between 2008 and 2017 and the occurrence of potential risk factors in a retrospective Dutch cohort study using the Integrated Primary Care Information (IPCI) database. Cases were defined as CIDP if the diagnosis of CIDP was described in the electronic medical file. In a source population of 928 030 persons with a contributing follow‐up of 3 525 686 person‐years, we identified 65 patients diagnosed with CIDP. The overall incidence rate was 0.68 per 100 000 person‐years (95% CI 0.45‐0.99). The overall prevalence was 7.00 per 100 000 individuals (95% CI 5.41‐8.93). The overall incidence rate was higher in men compared to woman (IRR 3.00, 95% CI 1.27‐7.11), and higher in elderly of 50 years or older compared with people <50 years of age (IRR 17 95% CI 4‐73). Twenty percent of CIDP cases had DM and 9% a co‐existing other auto‐immune disease. These background rates are important to monitor changes in the frequency of CIDP following infectious disease outbreaks, identify potential risk factors, and to estimate the social and economic burden of CIDP
Assessment of disease activity in patients with rheumatoid arthritis using optical spectral transmission measurements, a non-invasive imaging technique
Objectives: In rheumatoid arthritis (RA), treat-to-target strategies require instruments for valid detection of joint inflammation. Therefore, imaging modalities are increasingly used in clinical practice. Optical spectral transmission (OST) measurements are non-invasive and fast and may therefore have benefits over existing imaging modalities. We tested whether OST could measure disease activity validly in patients with RA. Methods: In 59 patients with RA and 10 patients with arthralgia, OST, joint counts, Disease Activity Score (DAS) 28 and ultrasonography (US) were performed. Additionally, MRI was performed in patients with DAS28<2.6. We developed and validated within the same cohort an algorithm for detection of joint inflammation by OST with US as reference. Results: At the joint level, OST and US performed similarly inproximal interphalangeal-joints (area under the receiver-operating curve (AUC) of 0.79, p<0.0001) andmetacarpophalangeal joints (AUC 0.78, p<0.0001). Performance was less similar in wrists (AUC 0.62, p=0.006). On the patient level, OST correlated moderately with clinical examination (DAS28 r=0.42, p=0.001), and US scores (r=0.64, p<0.0001). Furthermore, in patients with subclinical and low disease activity, there was a correlation between OST and MRI synovitis score (RAMRIS (Rheumatoid Arthritis MRI Scoring) synovitis), r=0.52, p=0.005. Conclusions: In this pilot study, OST performed moderately in the detection of joint inflammation in patients with RA. Further studies are needed to determine the diagnostic performance in a new cohort of patients with RA
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