cu2o nanoparticles were synthesized by thermal treatment in liquid paraffin without any inert gas protection using nano structures of schiff base copper (ii) complex (1) as precursor. liquid paraffin was used as solvent and reductant. span 80 was applied to control the morphology of cuprous oxide nanoparticles. the nano structure of the complex was characterized by x-ray diffraction measurement...

Introduction: Dust aerosols are observed to extend to high altitudes during planetary-scale dust storms [1-4]. Most recent GCM modeling of vertically extensive dust loading over the course of such storms indicates that dust particles with radii of 1-2 µm may be lifted to altitudes above 40 km, and their vertical distributions strongly affected by vigorous meridional transport which is intensifi...

The goal of infrared (IR) scene projection is to provide realistic testing and evaluation of ihfrared-imaging sensors in a controlled laboratory environment. For a valid test, a dynamic spatial and temporal scene that accurately represents real-world targets over a specified wavelength band must be generated. Requirements for scene projection are determined by the sensor under test and can be b...

phenolic resins have been widely used for selective high technology applications due to their excellent ablative properties, structural integrity and thermal stability that make them appropriate for thermal insulation materials, wood products industry, coatings, moulding compounds and composite materials. polymer layered silicate nanocomposites based on montmorillonite (mmt) have attracted a gr...

The authors proposed a novel approach to non-uniformity correction (NUC) of microbolometer focal plane arrays in microbolometer thermal cameras. This approach includes thermal drift correction without interrupting the thermal observation. For this purpose a translucent shutter is used instead of an opaque one. The authors provide detailed description of the proposed thermal drift correction app...

We describe sensor-based and signal-processing-based techniques for improving the detection of buried land mines in thermal infrared imagery. Results of experimental studies using MWIR (2.2-4.6 μm) and LWIR (8-12 μm) imaging systems are reported. Thermal clutter due to surface reßected sunlight and skylight are investigated and shown to be the dominant clutter component for both MWIR and LWIR i...

High brightness mid-IR sources have matured and are becoming viable solutions to many medical, defense, and sensing demands. Recently, super-continuum from 3.6-4.8μm with an average power of 22W has been demonstrated using a ZGP optical parametric oscillator [1]. To fully utilize the power and bandwidth of sources like these, passive optical components possessing both high optical and high ther...

The photometric accuracy of WFC3’s IR Channel was examined during thermal vacuum testing in September October, 2004. The measured signal levels from various incident flux levels and sample sequences were compared in order to determine the relative accuracy of FPA64. Significant deviations in measured versus expected flux levels were observed at some illumination levels. Introduction The purpose...

Hydroxyapatite bio-ceramic powder was synthesized using waste eggshells as calcium source by a straight forward thermal method. The process is carried out at high temperature. Different calcium phosphate phases were obtained just by changing the thermal treatment. HAp is the only apatite present in the reaction products, along with minute fractions of other calcium compounds. The final product ...