Results 111 to 120 of about 2,141 (221)

Optics

open access: yes, 2004
This course is an introduction to optical science with elementary engineering applications. Topics covered include geometrical optics: ray-tracing, aberrations, lens design, apertures and stops, radiometry and photometry; wave optics: basic ...
Barbastathis, George
core  

Optical photometry of Sco X-2

open access: yesAstronomy & Astrophysics, 1997
We present optical photometry of the galactic bulge low-mass X-ray binary GX 349+2 (Sco X-2) obtained in July 1993 and March 1996. Short-term variations up to one magnitude are present on time scales of a few hours, which are related to the known X-ray behaviour of the source.
Barziv, O.   +7 more
openaire   +2 more sources

Performance of Automated Hematology Analyzer Criteria in Detecting Peripheral Blood Smear Abnormalities: A Systematic Literature Review

open access: yesInternational Journal of Laboratory Hematology, EarlyView.
ABSTRACT Objectives Criteria for visual examination of stained peripheral blood smear (PBS) differ among institutions in the United States and internationally. In an effort to standardize review criteria, the International Consensus Group for Hematology Review (ICGHR) proposed in 2005 a consensus list of rules for CBC findings that should trigger a ...
Elizabeth L. Courville   +14 more
wiley   +1 more source

Optics

open access: yes, 2001
Introduction to optical science with elementary engineering applications. Geometrical optics: ray-tracing, aberrations, lens design, apertures and stops, radiometry and photometry.
Barbastathis, George
core  

Key metabolites secreted by Chlorella vulgaris alleviate salt stress in soybean seedlings

open access: yesJournal of Integrative Plant Biology, EarlyView.
Chlorella vulgaris secretes exosome‐derived linolenic acid and inosine, which alleviate salt stress and enhance salt tolerance in soybean seedlings by activating stress‐responsive signaling networks. ABSTRACT Soil salinization is a major abiotic stress factor that reduces soybean production.
Yunyi Shi   +6 more
wiley   +1 more source

Keck Observations in the INfrared of Taurus and ρ Oph Exoplanets And Ultracool Dwarfs (KOINTREAU) I: A Planetary-mass Companion and a Disk-obscured Stellar Companion Discovered in Taurus

open access: yesThe Astronomical Journal
We present the first discoveries from Keck Observations in the Infrared of Taurus and ρ Oph Exoplanets and Ultracool dwarfs (KOINTREAU), an adaptive optics imaging survey of young stars in the Taurus and ρ Oph star-forming regions using the Keck infrared
Samuel A. U. Walker   +12 more
doaj   +1 more source

Optics

open access: yes, 2013
Optics: Eighth Edition covers the work necessary for the specialization in such subjects as ophthalmic optics, optical instruments and lens design. The text includes topics such as the propagation and behavior of light; reflection and refraction - their ...
Freeman, M H, Fincham, W H A
core  

Improvement of the real-time gesture analysis by a new mother wavelet and the application for the navigation inside a scale-one 3D system [PDF]

open access: yes, 2013
This paper proposes a navigation technique for traveling inside a real-scale 3D model based on human gesture analysis. In the first step, a simple threshold is used as a criterion to analyze gestures.
CHARDONNET, Jean-Rémy   +7 more
core   +1 more source

ALKBH3 m1A Demethylase Deficiency Reduces Alzheimer's Amyloid‐β Pathology

open access: yesAdvanced Science, Volume 13, Issue 32, 9 June 2026.
This study identifies that ALKBH3‐driven m1A demethylation orchestrates Alzheimer's disease progression by disrupting mitochondrial and synaptic homeostasis. This epitranscriptomic mechanism suppresses PINK1‐mediated mitophagy via m1A erasure, leading to mitochondrial dysfunction, oxidative stress, elevated Aβ production, and impaired microglial ...
Yueyang Li   +25 more
wiley   +1 more source

Electroacupuncture Ameliorates Learning and Memory Deficits in Vascular Cognitive Impairment Rats Through Activation of the Supramammillary Nucleus–Dentate Gyrus Circuit

open access: yesCNS Neuroscience &Therapeutics, Volume 32, Issue 6, June 2026.
Electroacupuncture at ST36 alleviates cognitive deficits and restores hippocampal synaptic plasticity in VCI rats by activating the SuMGlu‐DG circuit. This study identifies the SuMGlu‐DG circuit as an essential mediator for the therapeutic and neuroprotective effects of acupuncture in vascular‐induced cognitive decline.
Fang Wan   +4 more
wiley   +1 more source

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