83 research outputs found
Exercise-induced mechanical hypoalgesia in musculotendinous tissues of the lateral elbow
The aim of this study was to investigate mechanical sensitivity responses at the lateral elbow to repeated weekly bouts of low load exercise in healthy subjects. Thirteen young men (n = 6) and women participated in 4 weeks of exercise. Arms were randomly allocated to an eccentric-only exercise protocol (ECC: 5 sets of 20 contractions) or to a concentric–eccentric protocol (CON-ECC: 5 sets of 10 eccentric/10 concentric contractions) performed at 30% maximal wrist extension force. Arms were exercised consecutively within each supervised weekly session. Quantitative measures of pressure pain threshold (PPT) recorded at three sites and maximal force for grip and wrist extension were assessed at baseline, and immediately pre/post exercise at each session. Muscle endurance during 100 maximal grip contractions force was assessed at baseline and one week following the final exercise session. Results showed that regardless of protocol, repeated low load exercise resulted in a time-dependent increase in PPT at all sites post exercise Weeks 3 and 4 and persisting at follow up Week 5 (P \u3c 0.02). No significant difference between protocols was evident for any measure. Muscle force and endurance were not significantly augmented compared with baseline. In conclusion mechanical hypoalgesia is induced by repeated low load exercises regardless of exercise mode, and this may prove beneficial if replicated clinically
Reaction and proton-removal cross sections of Li, Be, B, C, ^{12N, O and Ne on Si at 15 to 53 MeV/nucleon
Excitation functions for total reaction cross sections, , were
measured for the light, mainly proton-rich nuclei Li, Be, B,
C, N, O, and Ne incident on a Si telescope
at energies between 15 and 53 MeV/nucleon. The telescope served as target,
energy degrader and detector. Proton-removal cross sections, for
Ne and for most of the other projectiles, were also measured.
The strong absorption model reproduces the -dependence of , but
not the detailed structure. Glauber multiple scattering theory and the JLM
folding model provided improved descriptions of the measured values.
radii, extracted from the measured using the optical limit of
Glauber theory, are in good agreement with those obtained from high energy
data. One-proton removal reactions are described using an extended Glauber
model, incorporating second order noneikonal corrections, realistic single
particle densities, and spectroscopic factors from shell model calculations.Comment: 16 pages, 6 figure
No Ljungan Virus RNA in Stool Samples From the Norwegian Environmental Triggers of Type 1 Diabetes (MIDIA) Cohort Study
Human Enterovirus RNA in Monthly Fecal Samples and Islet Autoimmunity in Norwegian Children With High Genetic Risk for Type 1 Diabetes: The MIDIA study
The Buffer Gas Beam: An Intense, Cold, and Slow Source for Atoms and Molecules
Beams of atoms and molecules are stalwart tools for spectroscopy and studies
of collisional processes. The supersonic expansion technique can create cold
beams of many species of atoms and molecules. However, the resulting beam is
typically moving at a speed of 300-600 m/s in the lab frame, and for a large
class of species has insufficient flux (i.e. brightness) for important
applications. In contrast, buffer gas beams can be a superior method in many
cases, producing cold and relatively slow molecules in the lab frame with high
brightness and great versatility. There are basic differences between
supersonic and buffer gas cooled beams regarding particular technological
advantages and constraints. At present, it is clear that not all of the
possible variations on the buffer gas method have been studied. In this review,
we will present a survey of the current state of the art in buffer gas beams,
and explore some of the possible future directions that these new methods might
take
High gain, low noise 1550 nm GaAsSb/AlGaAsSb avalanche photodiodes
High sensitivity avalanche photodiodes (APDs) operating at eye-safe
infrared wavelengths (1400–1650 nm) are essential
components in many communications and sensing systems. We report the
demonstration of a room temperature, ultrahigh gain (
M
=
278
,
λ
=
1550
n
m
,
V
=
69.5
V
,
T
=
296
K
) linear mode APD on an InP substrate
using a
G
a
A
s
0.5
S
b
0.5
/
A
l
0.85
G
a
0.15
A
s
0.56
S
b
0.44
separate absorption, charge, and
multiplication (SACM) heterostructure. This represents
∼
10
×
gain improvement (
M
=
278
) over commercial, state-of-the-art
InGaAs/InP-based APDs (
M
∼
30
) operating at 1550 nm. The
excess noise factor is extremely low (
F
<
3
) at
M
=
70
, which is even lower than Si APDs.
This design gives a quantum efficiency of 5935.3% at maximum gain.
This SACM APD also shows an extremely low temperature breakdown
sensitivity (
C
b
d
) of
∼
11.83
m
V
/
K
, which is
∼
10
×
lower than equivalent InGaAs/InP
commercial APDs. These major improvements in APD performance are
likely to lead to their wide adoption in many photon-starved
applications.</jats:p
Technical Report on the Design, Construction, Commissioning and Operation of the Super-FRS of FAIR
HLA-DRB1*03 as a risk factor for microalbuminuria in same duration of type 1 diabetes: a case control study
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