Results 91 to 100 of about 2,198,954 (282)

Evaluation of the Scintillation Loss for Optical Communication Systems with Direct Detection [PDF]

, 2006
In optical communications through the atmosphere, the evaluation of a link feasibility often requires the quantification of the scintillation penalty in terms of power loss. To find how much additional optical power is needed to reach the bit-error-rate (
Perlot, Nicolas
core  

Results of the School Children Ocular Biometry and Refractive Error Study in South India

, 2022
Objectives:Axial length (AL) is an important contributor to refraction, and growth curves are gaining importance in the prediction of myopia. This study aimed to profile the distribution of ocular biometry parameters and to identify correlates of ...
Bhavatharini Ramakrishnan, Deepika Sri J S, Sushil Arunachalam, Robin S, Aparna Gopalakrishnan, Manaswini Sahoo, Varsaharinya M, Vishnupriya S, Anuradha Narayanan, Romans Chaudhary, Akshaya C Balakrishnan, Jameel Rizwana Hussaindeen   +11 more
core   +1 more source

Biologics Adoption in CRSwNP and the Associated Decline in Endoscopic Sinus Surgery: A Longitudinal Claims Database Study

International Forum of Allergy &Rhinology, EarlyView.
ABSTRACT Background Biologic treatments were introduced for chronic rhinosinusitis with nasal polyps (CRSwNP) in 2019. Treatment algorithms for medically refractory CRSwNP remain open, with patients choosing among surgery, biologics, or both. Real‐world utilization of surgery and biologics remains incompletely characterized.
Stephanie Shintani Smith, Sam L. Kaefer, Harsh Duvvuru, Robert C. Kern, Brent A. Senior, Vijay R. Ramakrishnan   +5 more
wiley   +1 more source

Comparison of Optical versus Ultrasonic Biometry in Keratoconic Eyes

Journal of Ophthalmology, 2013
Purpose. To compare the measurements of optical versus ultrasonic biometry devices in keratoconic eyes.Materials and Methods. Forty-two eyes of 42 keratoconus (KC) patients enrolled in the study were examined. Clinical and demographic characteristics of the patients were noted, and detailed ophthalmological examination was performed. Following Pentacam
Yasin Çınar, Abdullah Kürşat Cingü, Muhammed Şahin, Alparslan Şahin, Harun Yüksel, Fatih Mehmet Türkcü, Tuba Çınar, İhsan Çaça   +7 more
openaire   +3 more sources

Blood Biomarkers of Alzheimer's Disease and Patterns of Structural Brain Changes in the Community

Annals of Neurology, EarlyView.
Objective We aimed to investigate the associations between Alzheimer's disease (AD)‐related blood biomarkers and changes in brain volumes and cerebrovascular burden in community‐dwelling older adults. Methods We included 361 dementia‐free participants with a Mini‐Mental State Examination (MMSE) score ≥ 27 and without prior cerebrovascular events from a
Martina Valletta, Davide Liborio Vetrano, Erika J. Laukka, Grégoria Kalpouzos, Javier Oltra, Debora Rizzuto, Marco Canevelli, Claudia Fredolini, Chengxuan Qiu, Bengt Winblad, Laura Fratiglioni, Giulia Grande   +11 more
wiley   +1 more source

Axial Biometry of the Full Eye Using Ultra-Long Scan Depth Optical Coherence Tomography (n = 32).

, 2016
Axial Biometry of the Full Eye Using Ultra-Long Scan Depth Optical Coherence Tomography (n = 32).
James T. Banta (2580628), Hong Jiang (79543), Jianhua Wang (159545), Bilian Ke (584231), Jichang He (2580631), Xinjie Mao (2580625), Che Liu (392607)   +6 more
core   +1 more source

Optical trapping with a perfect vortex beam [PDF]

, 2014
The authors would like to thank the UK Engineering and Physical Sciences Research Council (EPSRC) for funding.Vortex beams with different topological charge usually have different profiles and radii of peak intensity.
Arita, Yoshihiko, Ewan M. Wright, Wright, Ewan M., Michael Mazilu, Chen, Mingzhou, Mazilu, Michael, Dholakia, Kishan, Yoshihiko Arita, Mingzhou Chen, Kishan Dholakia   +9 more
core   +1 more source

Developmental morphology of claspers and clasper‐glands during maturation in Potamotrygon wallacei (Chondrichthyes: Potamotrygoninae)

The Anatomical Record, EarlyView.
Abstract The claspers are the copulatory organs in male elasmobranchs, responsible for directing the semen into the female cloaca (C). However, the microscopic morphology of the claspers remains poorly understood. This study describes the morphology of the claspers and clasper glands (CGs) of cururu stingray (Potamotrygon wallacei) at different ...
Matheus Samuel Cunha Braga, Grazyelle Sebrenski da Silva, Maria Inês Braga de Oliveira, Jaydione Luiz Marcon, Ruben Dario Morales Gamba   +4 more
wiley   +1 more source

OPTICAL BIOMETRY WITH IOL MASTER 700 IN PATIENTS WITH MACULAR PATHOLOGY

Офтальмохирургия, 2017
Purpose. To study the diagnostic capabilities of the IOLMaster 700 as a screening tool for the detection of macular pathology.Material and methods. Optical biometry was performed on 68 eyes of 68 patients, including 43 eyes with ocular fundus pathology ...
A. A. Shpak, B. E. Malyugin, E. E. Aiba
doaj   +1 more source

Morphophysiological dynamics of the proximal post‐testicular ducts in Crotalus durissus Linnaeus, 1758 (Squamata: Viperidae)

The Anatomical Record, EarlyView.
Abstract The organization and function of reptilian excurrent ducts remain poorly characterized, particularly in Neotropical snakes. We provide the first integrative morphological, histochemical, immunohistochemical, and ultrastructural analysis of the proximal post‐testicular ducts of Crotalus durissus across reproductive stages.
Flávia Cappuccio de Resende, Gustavo Caldeira Cotta, Clara d' Ávila Fonseca Paiva de Paula Freitas, Leonardo Carvalho, Heloísa Helena Marques Oliveira, Victória Gomes Carvalho Silva, Lívia de Fátima Moreira Silva, Luciana Maria Silva, Samyra Maria dos Santos Nassif Lacerda, Guilherme Mattos Jardim Costa   +9 more
wiley   +1 more source