conclusions it was shown that the removal efficiency of nitrate was directly proportional to the amount of chaff, temperature, and contact time but inversely to the ph. this study showed that nitrate removal by chaff is a promising technique. results the result of this study revealed that chaff as an absorbent could remove nitrate from solutions, and the efficiency of adsorption increased as co...

This paper investigates the influence of adding vegetal fibers on thermal and acoustic performance based natural hydraulic lime. Mortar samples with 10% weight were fabricated water to obtain easily workable mortars good consistency; their was compared mortar without fibers. The different types (rice husk, spelt bran, Khorasan (turanicum) wheat chaff) size (as-found ground form). Thermal measur...

BACKGROUND In Uganda, the chaff remaining from threshed panicles of millet and sorghum is a low value, lignocellulose-rich agricultural by-product. Currently, it is used as a substrate for the cultivation of edible Oyster mushrooms (Pleurotus ostreatus). The aim of this study was to assess the potential to exploit the residual post-harvest compost for saccharification and fermentation to produc...

A pot trial was conducted with 52 rice cultivars of different types collected from different origins. The results showed that there were great differences in Cd concentrations in straw, brown rice and grain chaff among the rice cultivars grown in a soil containing a Cd concentration of 100 mg kg−1; the Cd concentrations in brown rice ranged from 0.22 to 2.86 mg kg−1. The great genotypic differe...

Citric acid is mainly produced by solid state fermentation by the filamentous fungus Aspergillus niger. Production of citric acid depends strongly on an appropriate strain and on operational conditions such as aeration, type and concentration of carbon source, nitrogen and phosphate limitation, pH, temperature, concentration of trace elements and morphology of the producer organism. The yield o...

In order to verify the chaff jamming performance, according to the time-frequency distribution and statistical characteristics of chaff echo, this paper presents a modeling and simulation method of chaff echo based on its mechanism of generation, Also it presents a simulation study of chaff echo signal based on LFM signals. The simulation results indicate that the generated chaff echo of this m...

In Modern warfare scenario, thin conducting chaff fibers with very high aspect ratio are used as passive electronic countermeasure. Radar Cross Section (RCS) of chaff cloud is an important parameter deciding its performance as electronic countermeasure. The chaff cloud is a dynamic target as when it is dispensed, it blooms in the atmosphere depending upon the atmospheric conditions and the plat...

Rice chaff (Variety: Devamallige) is used as the substrate for the production of fibrinolytic enzyme by Penicilliumchrysogenum AGSF16 in solid state fermentation. The optimized moisture content of the medium is 35-45 %( v/w) an inoculumof 5-10% (v/v) and an average particle size of 400μm of the substrate were optimum for productivity and enzyme activity of 65-70 IU per ml filtrate was achieved ...

Chaff is one of the most widely used and effective expendable electronic attack (EA) devices. It is a form of volumetric radar clutter consisting of multiple metalized radar reflectors known as chaff fibers designed to confuse hostile radar operation. It is dispensed into the atmosphere to deny radar acquisition, generate false targets. To understand the dynamics of chaff cloud, a software has ...