Results 11 to 20 of about 459,482 (377)

Casimir interaction of rod-like particles in a two-dimensional critical system [PDF]

open access: yesPhys. Rev. E 94, 032130 (2016), 2016
We consider the fluctuation-induced interaction of two thin, rod-like particles or "needles" immersed in a two-dimensional critical fluid of Ising symmetry right at the critical point. Conformally mapping the plane containing the needles onto a simpler geometry in which the stress tensor is known, we analyze the force and torque between needles of ...
Burkhardt, T. W., Eisenriegler, E.
arxiv   +5 more sources

Three-dimensional neuroelectronic interface for peripheral nerve stimulation and recording: realization steps and contacting technology [PDF]

open access: yes, 1994
A three-dimensional array of microelectrodes for use in intraneural stimulation and recording is presented. The 128 electrodes are at the tips of silicon needles, which are electrically insulated from each other.
Frieswijk, T.A.   +2 more
core   +15 more sources

Randomised controlled trial of atraumatic versus standard needles for diagnostic lumbar puncture [PDF]

open access: yes, 2000
OBJECTIVE: To compare the ease of use of atraumatic needles with standard needles for diagnostic lumbar puncture and the incidence of headache after their use. DESIGN: Double blind, randomised controlled trial.
Jamieson, D.R.S.   +2 more
core   +2 more sources

Concepts for augmented reality visualisation to support needle guidance inside the MRI

open access: yesHealthcare Technology Letters, 2018
During MRI-guided interventions, navigation support is often separated from the operating field on displays, which impedes the interpretation of positions and orientations of instruments inside the patient's body as well as hand–eye coordination.
André Mewes   +5 more
doaj   +1 more source

The Effect of Corticosteroid Injection with and Without Dry Needling on Pain Intensity in Patients with Tennis Elbow: A Randomized Clinical Trial Study [PDF]

open access: yesمجله دانشکده پزشکی اصفهان, 2022
Background: Tennis elbow is a condition in which pain is felt in the lateral part of the elbow due to the excessive extension of the wrist. This study aimed to compare the local injection effect of the corticosteroid alone vs corticosteroid alongside dry
Mohammad Hossein Besharati   +3 more
doaj   +1 more source

Recovery kinetics of winter stressed conifers: The effects of growth light environment, extent of the season, and species. [PDF]

open access: yes, 2010
Evergreens undergo a dramatic reduction in their maximal photochemical efficiency (measured as Fv/Fm) during winter, which is largely due to increases in a sustained form of thermal energy dissipation.
Amy Verhoeven
core   +2 more sources

Anatomical differences between Pinus mugs Truro populations from the Tarts Mts.. expressed in needle traits and in needle and cone traits together

open access: yesActa Societatis Botanicorum Poloniae, 2014
Two-year-old needles were collected from 429 individuals of dwarf mountain pine (Pius mugn Turra) from 10 populations of this species growing in the Tatra Mts. (5 populations from calcareous and 5 from calcium-free undersoil).
Maria Bobowicz, Maria Kzrakowa
doaj   +1 more source

Effect of root canal geometry and needle type on apical extrusion of irrigant: an ex vivo study

open access: yesActa Odontologica Turcica, 2022
Objective: The aim was to evaluate the effect of root canal geometry on the amount of apical extrusion of irrigant, by testing different tapers and needle types.
Büşra Serçe Fikirli   +2 more
doaj   +1 more source

Localisation and mobility of trace metal in silver fir needles [PDF]

open access: yes, 2012
Trace metals (TM: Co, Ni, Cu, Zn, Cd, and Pb) as well as Al, Mn, and Fe content was measured in needles of a remote silver fir stand in the south of France. TM localisation and behaviour in needles was evaluated by measuring total and internal content of
Gandois, Laure, Probst, Anne
core   +2 more sources

The changes of colouring and content of photosynthetic pigments in unevenaged needles of Picea pungens Engelm. in conditions of urban plantings

open access: yesІнтродукція Рослин, 2019
Objective – is to analyze the content of chlorophylls and carotenoids in the 1–4-year-old blue-coloured needles of Picea pungens Engelm. trees in street plantings of Kryvyi Rih city exposed to emissions of large metallurgical combine as well growing in ...
I.I. Korshykov   +2 more
doaj   +1 more source

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