Results 131 to 140 of about 227,979 (276)

Optical and Visual Performance of PWM Controlled InGaN and InGaAlP LEDs for Automotive Lighting Applications

open access: yesIEEE Photonics Journal
This research investigates the light quality and thermal management of InGaN and InGaAlP Light Emitting Diodes (LEDs) under various light regulation methods.
Miroslav Slouka   +3 more
doaj   +1 more source

Results of photometry of selected asteroids from the Hilda group

open access: yesВісник Астрономічної школи, 2013
This paper presents the first results of CCD photometry of selected Hilda group asteroids. These observations are part of a program carried out in the Institute of Astronomy of the Kharkiv National University, that is aimed to receive the parameters of ...
I. G. Slyusarev   +4 more
doaj   +1 more source

A Personalized 4D Workflow for the Manufacturing of Functional and Removable Esthetic Devices: A Technical Report

open access: yesJournal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objective This technical report describes a fully digital workflow for the manufacturing of a functional removable esthetic device (FRED) that addresses multiple clinical scenarios before prosthetic rehabilitation. The proposed method integrates advanced digital tools to achieve functional and esthetic outcomes while ensuring reversibility and
Mauro Merli   +6 more
wiley   +1 more source

OPTICAL OBSERVATIONS OF SMALL SPACECRAFT AND SPACE DEBRIS AT ISTP SB RAS SAYAN OBSERVATORY

open access: yesSolar-Terrestrial Physics, 2019
Launch of several thousands of small spacecraft as part of satellite groups of various companies (OneWeb, SpaceX, etc.) is expected in the coming years. They will significantly increase the “population” in the low-orbit region.
Korobtsev I.V., Mishina M.N.
doaj   +1 more source

Galactic Globular and Open Clusters in the Sloan Digital Sky Survey. I. Crowded Field Photometry and Cluster Fiducial Sequences in ugriz

open access: yes, 2008
We present photometry for globular and open cluster stars observed with the Sloan Digital Sky Survey (SDSS). In order to exploit over 100 million stellar objects with r < 22.5 mag observed by SDSS, we need to understand the characteristics of stars in ...
Audrey Simmons   +28 more
core   +1 more source

Neuroendocrine mechanisms responsible for elevated gonadotrophin‐releasing hormone and luteinising hormone pulses in polycystic ovary syndrome

open access: yesJournal of Neuroendocrinology, EarlyView.
Abstract Polycystic ovary syndrome (PCOS) is the leading cause of anovulatory infertility in premenopausal individuals with ovaries worldwide. Despite the diagnostic features of anovulation, ovarian cysts, and hyperandrogenemia, which indicate that ovary dysfunction is the cause of the syndrome, changes in central neuroendocrine circuits are a ...
Aleisha M. Moore
wiley   +1 more source

Interstellar extinction from photometric surveys: application to four high-latitude areas

open access: yesOpen Astronomy, 2018
Information on interstellar extinction and dust properties may be obtained from modern large photometric surveys data. Virtual Observatory facilities allow users to make a fast and correct cross-identification of objects from various surveys. It yields a
Malkov Oleg   +13 more
doaj   +1 more source

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