Results 61 to 70 of about 1,908,179 (350)

Flat lens criterion by small-angle phase

open access: yesOptics Express, 2014
We show that a classical imaging criterion based on angular dependence of small-angle phase can be applied to any system composed of planar, uniform media to determine if it is a flat lens capable of forming a real paraxial image and to estimate the image location.
Ott, Peter   +3 more
openaire   +3 more sources

Cycle-to-cycle control of swing phase of paraplegic gait induced by surface electrical stimulation [PDF]

open access: yes, 1995
Parameterised swing phase of gait in paraplegics was obtained using surface electrical stimulation of the hip flexors, hamstrings and quadriceps; the hip flexors were stimulated to obtain a desired hip angle range, the hamstrings to provide foot ...
Baardman, G.   +4 more
core   +3 more sources

SmallTalk: a novel small‐sized fusion tag for peptide expression and purification

open access: yesFEBS Open Bio, EarlyView.
The SmallTalk fusion tag allows for the efficient expression and purification of soluble recombinant proteins or peptides in Escherichia coli. Testing with SmallTalk‐GFP confirmed that the proteins were soluble and folded correctly, while SmallTalk‐Bin1b maintained its antimicrobial activity against various bacterial isolates. This streamlined workflow
Atika Tariq   +3 more
wiley   +1 more source

Association between serum uric acid and phase angle in patients with type 2 diabetes mellitus: A cross-sectional study

open access: yesFrontiers in Endocrinology, 2023
BackgroundThe purpose of this analysis was to investigate the associations between serum uric acid and phase angle in patients with type 2 diabetes mellitus.MethodsIn this retrospective cross-sectional study, we included 200 type 2 diabetes mellitus ...
Yezi Hu, Jie Liu, Hui Jin
doaj   +1 more source

Relation of leg phase angle from bioelectrical impedance analysis with voluntary and evoked contractile properties of the plantar flexors [PDF]

open access: gold, 2023
Kosuke Hirata   +6 more
openalex   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

open access: yesFEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

ELECTRIC PHASE ANGLE OF CELL MEMBRANES [PDF]

open access: yesJournal of General Physiology, 1932
From the theory of an electric network containing any combination of resistances and a single variable impedance element having a constant phase angle independent of frequency, it is shown that the graph of the terminal series reactance against the resistance is an arc of a circle with the position of the center depending upon the phase angle of the ...
openaire   +2 more sources

Determinants of bioelectrical phase angle in disease [PDF]

open access: yesBritish Journal of Nutrition, 2011
Phase angle (PhA), a parameter of bioelectrical impedance analysis, is a well-known predictor of morbidity and mortality in various diseases. The causes of decreased PhA are, however, not yet completely understood. We therefore investigated determinants of PhA in 777 hospitalised patients in a retrospective analysis.
Nicole, Stobäus   +4 more
openaire   +2 more sources

Granular discharge and clogging for tilted hoppers

open access: yes, 2009
We measure the flux of spherical glass beads through a hole as a systematic function of both tilt angle and hole diameter, for two different size beads.
C. Mankoc   +29 more
core   +1 more source

Lesion Location and Functional Connections Reveal Cognitive Impairment Networks in Multiple Sclerosis

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Cognitive impairment, fatigue, and depression are common in multiple sclerosis (MS), potentially due to disruption of regional functional connectivity caused by white matter (WM) lesions. We explored whether WM lesions functionally connected to specific brain regions contribute to these MS‐related manifestations.
Alessandro Franceschini   +7 more
wiley   +1 more source

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