Results 21 to 30 of about 248,303 (255)

Calculation of 3D Coordinates of a Point on the Basis of a Stereoscopic System

open access: yesOpen Engineering, 2018
The solution of three-dimensional (3D) coordinate calculation task for a material point is considered. Two flat images (a stereopair) which correspond to the left and to the right viewpoints of a 3D scene are used for this purpose.
Mussabayev R.R.   +4 more
doaj   +1 more source

Comparative Study of Thermal Lens Effect in End Pulsed-Pumped Ceramics and Single Crystal Yb3+ YAG- Cr4+ YAG Passively Q-switched Microchip Laser. [PDF]

open access: yesJournal of Bioscience and Applied Research, 2016
In this work, different thermal lens focal lengths with different pumping repetition rates for ceramic and single crystal Yb:YAGare calculated for controlling the thermal focal length without using additional optical elements .
Y. S. Nada, S. M. A. Maize
doaj   +1 more source

Adaptive Lenses Based on Soft Electroactive Materials

open access: yesApplied Sciences, 2018
Soft electroactive materials including dielectric elastomer actuators (DEAs) and polyvinyl chloride (PVC) gels have recently been extensively investigated. These smart materials can effectively respond to an electric field, resulting in shape deformation.
Hongwen Ren, Shin-Tson Wu
doaj   +1 more source

Determination of acoustic field parameters for high-frequency focusing ultrasonic transducers up to 100 MHz

open access: yesActa Acustica
High-frequency focused ultrasonic technology offers distinct advantages in microstructural inspection and high-resolution imaging owing to its short wavelength and superior acoustic field-focusing capability.
Lu Huanran   +6 more
doaj   +1 more source

Vari-Focal Light Field Camera for Extended Depth of Field

open access: yesMicromachines, 2021
The light field camera provides a robust way to capture both spatial and angular information within a single shot. One of its important applications is in 3D depth sensing, which can extract depth information from the acquired scene.
Hyun Myung Kim   +5 more
doaj   +1 more source

Are Fertility Preservation Procedures Before Gonadotoxic Therapy and Hematopoietic Stem Cell Transplantation Feasible and Safe in Very Young Children? A Retrospective Cohort Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Fertility preservation (FP) is increasingly integrated into the care of pediatric patients exposed to gonadotoxic therapy or conditioning for hematopoietic stem cell transplantation (HSCT), yet perioperative data in infants and toddlers remain scarce.
Kerstin Saalabian   +13 more
wiley   +1 more source

A Reflective Metalens With Tunable Focal Length for Millimeter Waves

open access: yesIEEE Access, 2023
A novel architecture of reconfigurable, flat metalens is proposed with an electrically tunable focal length for applications in wireless communication systems working at the frequencies of millimeter waves (i.e., 60 GHz).
Mohammad Ali Shameli   +5 more
doaj   +1 more source

Guidelines for Pediatric Radiotherapy Simulation: A Report From the Children's Oncology Group Radiation Oncology Discipline

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric radiation therapy presents unique challenges compared to adult treatments, including those of immobilization, potential need for sedation, and the critical importance of accurate, reproducible positioning. Additionally, heightened attention to imaging doses is necessary to minimize long‐term toxicity in survivors.
Parham Alaei   +17 more
wiley   +1 more source

Copper laser patterning on a flexible substrate using a cost-effective 3D printer

open access: yesScientific Reports, 2022
We studied the cost effective direct laser patterning of copper (Cu) on thin polyimide substrates (PI thickness: 12.5–50 µm) using a 405 nm laser module attached to an inexpensive 3D printer.
Sajal Chakraborty   +2 more
doaj   +1 more source

ASSIST: Refinement of a Benefits Navigator Intervention Among Low‐Income Pediatric Oncology Families

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background/Objectives Children with cancer living in poverty experience worse survival and quality of life. Interventions connecting low‐income families to benefits (e.g., Supplemental Nutrition Assistance Program [SNAP] improve health outcomes; yet nearly 50% of SNAP‐eligible pediatric oncology families are unenrolled.
Puja J. Umaretiya   +11 more
wiley   +1 more source

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