نتایج جستجو برای: pixe
تعداد نتایج: 469 فیلتر نتایج به سال:
Abstract To extract information on elemental components and PM characteristics from smoke number (SN) filter paper, we were performed analysis by micro-PIXE. As a result of the SN filter, composition jet engine exhaust was obtained. Regarding have been collected for each difference in thrust various aircraft engines at turbine test cells around world. By periodically analyzing such it is possib...
The particle induced X-ray emission method is perfectly adapted to the study, by external beam, of art objects (like paintings) and allows non-destructive analysis of the atomic composition of the target. However, a strange phenomenon occurs during irradiation on some pigments: dark brownish stains appear, and this could be due to the formation of color centers. In fact, these darkening spots p...
در این مقاله توزیع عنصر اورانیوم و عناصر دیگر موجود در کانیهای اورانیومدار در مقیاس میکرونی با استفاده از میکروسکوپ روبشی پروتون (Micro-PIXE) بررسی شده است. با استفاده از توزیع عنصری بدست آمده برای عناصر موجود در کانیها، همبستگی توزیع عنصر اورانیوم و عناصر دیگر موجود در نمونهها مشخص شده است. این نتایج نشان میدهد که در این کانیها، کانیهای اورانیومدار با کانیهای آهن احاطه شدهاند. همچنین...
Commercial grapefruit seed extracts (GSE) were extracted with chloroform. The solvent was evaporated, and the resulting solid was subsequently analyzed by high-performance liquid chromatography, electrospray ionization mass spectrometry, nuclear magnetic resonance (NMR) spectroscopy, and elemental analysis (by proton-induced X-ray emission [PIXE] analysis). The main constituent was identified a...
In this work, PIXE experiments were performed for measuring heavy and light elements' (ranging from aluminium to lead) concentrations inside various polluted and unpolluted soils as well as liquid samples collected from different phosphate factory sewers in the El Jadida-Safi Atlantic coastal region (Morocco). In addition, uranium ((238)U) and thorium ((232)Th) contents were evaluated in the sa...
accumulation, 71, 110, 111 non-ideal, 81 agarose, 33, 35, 44 pore size, 59 alkalinity, 35, 176, 183 aluminium, 44, 67, 176, 238 ammonia, 35, 176 ammonium persulphate, 33, 266 analytical techniques, 285 colorimetry, 181–182 computer imaging densitometry (CID), 181–182, 185, 202, 285 hyperspectral imaging, 182 laser ablation – ICPMS, 185–188, 285 PIXE, 175, 176 antimony, 44, 67, 135 area of windo...
Seed germination is considered a critical phase in plant development and relatively sensitive to heavy metals. White poplar (Populus alba) trees tend to accumulate Cd and Zn in their tissues. We tested if soil contamination can affect P. alba progeny, reduced seed germination and explored the distribution of mineral elements in the seed. For this purpose, fruits and seeds from female P. alba tr...
Dye sensitized solar cells (DSCs) have received considerable attention once this technology offers economic and environmental advantages over conventional photovoltaic (PV) devices. The PV performance of a DSC relies on the characteristics of its photoanode, which typically consists of a nanocrystalline porous TiO2 film, enabled with a large adsorptive surface area. Dye molecules that capture p...
PURPOSE To determine whether iron homeostasis disorder accompanies retinal degeneration in Royal College of Surgeons (RCS) rats. METHODS The presence of iron was revealed directly by proton-induced X-ray emission (PIXE) and indirectly by electron microscopy (EM). Ferritin, transferrin (Tf), and transferrin receptor (Tf-R) were localized by immunohistochemistry. Ferritin and Tf proteins were a...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید