Results 91 to 100 of about 861,931 (295)

Perceived Vertical and Lateropulsion: Clinical Syndromes, Localization, and Prognosis [PDF]

open access: yes, 2000
We present a clinical classification of central vestibular syndromes according to the three major planes of action of the vestibulo-ocular reflex: yaw, roll, and pitch.
Dieterich, Marianne, Brandt, Thomas
core   +1 more source

Flexural Behavior of 3D‐Printed Porous Bouligand‐Structured Polymers: Influence of Pitch Angle and Porosity

open access: yesAdvanced Engineering Materials, EarlyView.
This study examines how helicoidal architectures with different porosities respond to bending. Adjusting layer angle and spacing in 3D‐printed polymers reveals clear tradeoffs between stiffness, strength, and energy absorption. Experiments and simulations highlight designs that distribute stress effectively, offering pathways for optimizing lightweight
Praveenkumar Subhash Patil   +2 more
wiley   +1 more source

Diagnostic Criteria for Convergence Excess: Diagnostic Validity of Clinical Signs Associated with Near Esophoria

open access: yesJournal of Eye Movement Research
To propose which tests may be used for diagnosing convergence excess. A prospective study of a consecutive clinical sample was performed. Patients (18–35 years) attending optometric care underwent subjective refraction, cover test, and Symptom ...
Pilar Cacho-Martínez   +3 more
doaj   +1 more source

Prevalence of convergence insufficiency between 18 and 35 years and its relation to body mass index

open access: yesTNOA Journal of Ophthalmic Science and Research, 2019
Background: Convergence insufficiency (CI) is a common condition characterized by patient's inability to maintain binocular alignment on objects as they approach from distance to near. One study has found association between low body mass index (BMI) and
Ramesh Shruthy Vaishali   +2 more
doaj   +1 more source

Distinct Microstructural Characteristic Lengths Defining Notch Fatigue Crack Initiation and Propagation, and Defect Tolerance in Advanced Steels

open access: yesAdvanced Engineering Materials, EarlyView.
Schematic representation of modes of microcrack nucleation, growth and temporary arrestment at different boundaries, with the criteria for crack propagation in three scenarios: (1) large notch, (2) defect/small sharp notch, and (3) long crack. This work revisits and integrates results on the fatigue behavior of advanced bainitic steels (in particular ...
Lucia Morales‐Rivas
wiley   +1 more source

Microstructure Modification of Additively Manufactured Mo–9Si–8B by Annealing and Its Effects on High‐Temperature Mechanical Properties

open access: yesAdvanced Engineering Materials, EarlyView.
Postbuild annealing systematically modifies the phase fractions and morphology of EB‐PBF processed Mo–9Si–8B. Quantitative microstructure–property correlations reveal how controlled phase evolution enhances high‐temperature compressive strength and creep resistance.
Christopher Schmidt   +5 more
wiley   +1 more source

Sigma-Convergence Versus Beta-Convergence: Evidence from U.S. County-Level Data [PDF]

open access: yes
In this paper we outline (i) why ó-convergence may not accompany â- convergence, (ii)cite evidence of â-convergence in the U.S., (iii) and use USA county-level data containing over 3,000 cross-sectional observations to demonstrate that ó-convergence does
Daniel Levy   +2 more
core   +2 more sources

Ocular Oscillations

open access: yes, 1977
A variety of abnormal ocular oscillations consequent to brain stem and cerebellar dysfunction are described. The brain stem eye signs include: see-saw nystagmus, convergence-retraction nystagmus, down-beat nystagmus, ocular myoclonus, ocular bobbing, and
Robert B. Daroff
core  

An Explicit Constitutive Reconstruction Framework for Mechanical Characterization of Miniaturized 3D‐Printed Specimens

open access: yesAdvanced Engineering Materials, EarlyView.
An explicit constitutive reconstruction framework enables accurate tensile characterization of miniaturized additively manufactured specimens using only the grip‐to‐grip displacement measurements. Progressive validation through self‐consistency, analytical comparison, and inverse finite element method (iFEM) benchmarking demonstrates constitutive ...
Junqing Leng   +4 more
wiley   +1 more source

Relationship between mandibular deviation and ocular convergence

open access: yes, 2004
Recent studies have confirmed the relationship between head posture, mandibular position and visual focusing. A case-controlled study was conducted to assess the occurrence of ocular convergence defects between subjects with functional mandibular ...
MONACO, ANNALISA   +5 more
core  

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