نتایج جستجو برای: 21 metallic waste
تعداد نتایج: 366933 فیلتر نتایج به سال:
Gamma irradiation is a form of pure energy which is currently used most widely for food and waste irradiation. To evaluate the potential of gamma irradiated sludge for its suitability as a soil amendment in agriculture, field experiments were carried out in a root crop, carrot (Daucus carota). Treatments consisting of three sources of manure (Farmyard Manure (FYM), gamma-irradiated sewage sludg...
INTRODUCTION Metallosis is a condition characterized by an infiltration of periprosthetic soft tissues and bone by metallic debris resulting from wear or failure of joint arthroplasties. PRESENTATION OF CASE Authors describe a case of a 45-year-old man treated for an osteosarcoma of the distal femur with a modular prosthesis when he was 18 years old, he developed massive metallosis with skin ...
Percutaneous coronary intervention (PCI) of saphenous vein grafts (SVG) with metallic stents is associated with a high rate of restenosis (19–21%) and target vessel failure in the long-term follow-up [1]. Potentially, implantation of a bioresorbable vascular scaffold (BVS) (ABSORB, Abbott Laboratories) into the stenotic SVG may be an alternative to metallic stents [2]. Although the effectivenes...
16 Multilayered structures with 14 to 50 nm periods composed of titanium and two different 17 titanium oxides, TiO and TiO2, were accurately produced by DC magnetron sputtering 18 using the reactive gas pulsing process (RGPP). Structure and composition of these 19 periodic TiO2/TiO/Ti stacks were investigated by X-ray diffraction (XRD) and 20 transmission electronic microscope (TEM) techniques....
Heterogeneous transesterification of vegetable oils offers an environmentally more attractive option for biodiesel production compared with the conventional homogeneous processes. Thus, double metallic methoxide catalyst was developed in the present study, aiming to improve the transesterification of low-cost palm stearin (PS) and reduce waste generation. The physicochemical properties of the s...
This paper presents a novel approach for guiding mobile robots inside greenhouses demonstrated by promising preliminary physical experiments. It represents a comprehensive attempt to use the successful principles of AGVs (auto-guided vehicles) inside greenhouses, but avoiding the necessity of modifying the crop layout, and avoiding having to bury metallic pipes in the greenhouse floor. The desi...
This study examines the bioleaching of municipal solid waste incineration fly ash by Aspergillus niger, and its effect on the fungal morphology, the fate of the ash particles, and the precipitation of metallic salt crystals during bioleaching. The fungal morphology was significantly affected during one-step and two-step bioleaching; scanning electron microscopy revealed that bioleaching caused ...
During the last two decades, extensive attention has been paid on the management of environmental pollution causal by hazardous materials such as heavy metals. Decontamination of heavy metals in the soil and water around industrial plants has been a challenge for a long time. A number of methods have been developed for the removal of heavy metals from liquid wastes such as precipitation, evapor...
Almost all heavy metals are serious toxicants as carcinogens. However, due to their chemical and physiological properties, heavy metals are useful in industrial areas including alloy, smelting and production of commercial products. Such applications increase the opportunity for heavy metal exposure. Waste from industrial processes is also a major source of environmental contamination and accumu...
Metals and metal compounds have been used for many years in the manufacture of plastic products. The metallic compounds added to plastics although encapsulated in polymer matrix are usually not chemically bound to polymer molecules and consequently can gradually be released to environment over the service life of a plastic made object. Similarly, when disposing of plastic waste either by incine...
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