Best economy (lean of peak or LOP) operation of aircraft engines rather than best power (rich of peak or ROP) has been suggested as a means to reduce fuel consumption in light aircraft with modest speed reduction leading to reduced operating cost (increased miles per gallon), and to reduce cylinder head temperatures (CHTs) leading to improved engine longevity and reduced maintenance cost. A rec...

Cloud radar data collected at the Atmospheric Radiation Measurement (ARM) Program’s Southern Great Plains site were used to evaluate the properties of cirrus clouds that occurred in a cloud-resolving model (CRM) simulation of the 29-day summer 1997 intensive observation period (IOP). The simulation was ‘‘forced’’ by the large-scale advective temperature and water vapor tendencies, horizontal wi...

AIM The aim of this study was to establish a correlation between macular thickness on optical coherence tomography (OCT) and 2 visual functions (visual acuity and contrast sensitivity [CS]) in established cases of primary open angle glaucoma (POAG). MATERIALS AND METHODS A total of 50 consecutive patients of established POAG between 40 years and 70 years of age attending the glaucoma clinic o...

SD-OCT has become an essential tool for evaluating macular pathology; however several aspects of data collection and analysis affect the accuracy of retinal thickness measurements. Here we evaluated sampling density, scan centering, and axial length compensation as factors affecting the accuracy of macular thickness maps. Forty-three patients with various retinal pathologies and 113 normal subj...

Optically thin cirrus near the tropical tropopause regulate the humidity of air entering the stratosphere, which in turn has a strong influence on the Earth's radiation budget and climate. Recent high-altitude, unmanned aircraft measurements provide evidence for two distinct classes of cirrus formed in the tropical tropopause region: (i) vertically extensive cirrus with low ice number concentra...

We report improved detection of thin cirrus clouds over clear ocean in the Tropics using oblique camera stereo retrieval of cloud-top heights (CTH) from the Multiangle Imaging SpectroRadiometer (MISR) instrument on the Terra Satellite. MISR misses thin cirrus clouds of optical depth < 0.3 with its standard nadir stereo processing. Thin cirrus is transparent to incoming solar radiation but is se...

High-speed, high-resolution imaging of the retinal nerve fiber layer (RNFL) with spectral-domain optical coherence tomography (OCT) has become an essential tool for evaluation of glaucoma. The Cirrus HD-OCT (Carl Zeiss Meditec, Inc. Dublin, CA) is a spectral-domain OCT that provides visualization of the distribution pattern and measurement of RNFL abnormalities in a 6x6mm2 optic disc region. An...

OBJECTIVE To compare the glaucoma diagnostic capabilities offered by Stratus and Cirrus spectral-domain optical coherence tomography (OCT). METHODS One hundred subjects with glaucoma and 74 healthy subjects were tested by Stratus and Cirrus OCT. Areas under the receiver operating characteristic curves (AUCs) of average, 4-quadrant, and 12-sector retinal nerve fiber layer thicknesses and sensi...

Purpose. To describe the SD-OCT findings in patients with diffuse unilateral subacute neuroretinitis (DUSN) and evaluate CRT and RNFL thickness. Methods. Patients with clinical diagnosis of DUSN who were submitted to SD-OCT were included in the study. Complete ophthalmologic examination and SD-OCT were performed. Cirrus scan strategy protocols used were 200 × 200 macular cube, optic nerve head ...