Results 51 to 60 of about 118,093 (308)

Refraction in radioastronomy [PDF]

open access: yesSymposium - International Astronomical Union, 1979
In the last few years there was no paper in the astronomical literature reporting on new measurements of radioastronomical refraction. But there are some important review papers on different aspects of this topic, e.g. on the ionosphere by M.M. Komesaroff (1960) and T.
openaire   +1 more source

Agreement of wavefront-based refraction, dry and cycloplegic autorefraction with subjective refraction

open access: yes, 2020
Purpose: To evaluate the agreement of dry, and cycloplegic autorefraction and wavefront-based refraction with subjective refraction. Method: 83 subjects aged 19–57 years were included in this cross-sectional study.
Abdolahian, Milad   +3 more
core   +1 more source

Negative refraction and subwavelength focusing in two-dimensional photonic crystals [PDF]

open access: yes, 2007
Chapter 6We experimentally and theoretically demonstrate negative refraction and focusing on electromagnetic (EM) waves by using two-dimensional photonic crystal slabs at microwave frequencies. Negative refraction is observed both for transverse magnetic
Ekmel Ozbay   +3 more
core   +1 more source

Tumour‐proximal deep serum proteomics identifies biomarkers associated with ovarian cancer

open access: yesMolecular Oncology, EarlyView.
New biomarkers are needed for early ovarian cancer detection. Ovarian (tumour‐proximal) and peripheral vein serum from healthy women and patients with benign or malignant tumours underwent nanoparticle‐enriched deep proteomics. Ovarian serum yielded more protein identifications and revealed tumour‐reflective signatures.
Darren Lau   +9 more
wiley   +1 more source

Cooperative role of MDSCs and Tregs in alum-induced alloimmune tolerance in corneal transplantation

open access: yesScientific Reports
Alum, a widely used adjuvant, has recently been recognized for its capacity to modulate immune responses beyond classical activation. In this study, we investigated whether alum-induced expansion of myeloid-derived suppressor cells (MDSCs) and their ...
Lifang Li   +6 more
doaj   +1 more source

The effect of muzzle blast wave on light screen in external ballistic measurement

open access: yesFrontiers in Physics
IntroductionIn measuring initial velocity, light screen detectors (LSD) are positioned closer to the muzzle. The light screen of the LSD can be affected by the muzzle blast wave (MBW), resulting in an inaccurate initial velocity.MethodsA method for ...
Chenxi Duan   +4 more
doaj   +1 more source

Refractive Status of Mountain Aborigine Schoolchildren in Southern Taiwan

open access: yesKaohsiung Journal of Medical Sciences, 2008
Myopia is an epidemic health problem in Taiwan's schoolchildren. The prevalence of myopia has been increasing yearly, and the average age at which myopia develops has also become younger.
Shiuh-Liang Hsu   +5 more
doaj   +1 more source

ABCD matrix for reflection and refraction of laser beam at tilted concave and convex elliptic paraboloid interfaces and studying laser beam reflection from a tilted concave parabola of revolution [PDF]

open access: yesJournal of Electrical and Computer Engineering Innovations, 2015
Studying Gaussian beam is a method to investigate laser beam propagation and ABCD matrix is a fast and simple method to simulate Gaussian beam propagation in different mediums.
M. Mansour Abadi   +3 more
doaj   +1 more source

Peripheral refraction, peripheral eye length, and retinal shape in myopia [PDF]

open access: yes, 2016
Purpose: To investigate how peripheral refraction and peripheral eye length are related to retinal shape.\ud \ud Methods: Relative peripheral refraction RPR and relative peripheral eye length RPEL were determined in 36 young adults (M +0.75D to −5.25D ...
Katrina L. Schmid   +7 more
core   +1 more source

A new flow chip in combination with multiphoton microscopy as a protocol for longitudinal 3D imaging of tissue calcification under shear stress

open access: yesFEBS Open Bio, EarlyView.
Miniaturized flow chip platform enabling continuous perfusion and longitudinal multiphoton 3D imaging of vascular smooth muscle cell constructs under physiological flow. Brightfield imaging guides region selection, while CellTracker Green and mRuby‐labeled fetuin‐A visualize cells and mineral deposition, respectively. Magnesium supplementation markedly
Vytautas Kučikas   +6 more
wiley   +1 more source

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