scholarly journals Determination of Fe and Zn Accumulation in Leafy Vegetables and Mushrooms Using Energy Dispersive X-Ray Fluorescence Technique

2011 ◽  
Vol 68 (2) ◽  
Author(s):  
Claudia STIHI ◽  
Gabriela BUSUIOC ◽  
Cristiana RADULESCU ◽  
Carmen ELEKES ◽  
Sorin CIULEI
Keyword(s):  
Leafy Vegetables ◽  
Energy Dispersive ◽  
Wild Edible Mushrooms ◽  
X Ray ◽  
Zn Uptake ◽  
Edxrf Technique ◽  
Armillariella Mellea ◽  
Relationship Of ◽  
The Relationship

The aim of this study was to determine the Fe and Zn concentrations in some leafy vegetables (cabbage, spinach, celery and lettuce) and in their growing soil collected from sites with different industrial activity; in fruiting body of wild edible mushrooms (Armillariella mellea) and in their substrate (soil) collected at different distances by a metal smelter, by using energy dispersive X-ray fluorescence (EDXRF) technique. A quantitative evaluation of the relationship of Fe and Zn uptake by the vegetables and mushrooms from soil was made by calculating the coefficient accumulation Ka. The results reveal that lettuce is a accumulator of Fe and Armillariella mellea is a accumulator of Zn.

Determination of iron in uranium matrix using energy dispersive X-ray fluorescence (EDXRF) technique

2015 ◽  
Vol 306 (2) ◽  
pp. 543-548 ◽  
Author(s):  
Sujoy Biswas ◽  
V. H. Rupawate ◽  
K. N. Hareendran ◽  
S. B. Roy
Keyword(s):  
Energy Dispersive ◽  
X Ray ◽  
Edxrf Technique ◽  
Uranium Matrix

Preparation And elemental analysis of ancient fibers

1987 ◽  
Vol 45 ◽  
pp. 410-411
Author(s):  
Allen Angel ◽  
Kathryn A. Jakes
Keyword(s):  
Cross Sections ◽  
Physical Structure ◽  
Energy Dispersive ◽  
Archaeological Sites ◽  
X Ray ◽  
Long Term Storage ◽  
Backscattered Electron ◽  
Electron Imaging

Fabrics recovered from archaeological sites often are so badly degraded that fiber identification based on physical morphology is difficult. Although diagenetic changes may be viewed as destructive to factors necessary for the discernment of fiber information, changes occurring during any stage of a fiber's lifetime leave a record within the fiber's chemical and physical structure. These alterations may offer valuable clues to understanding the conditions of the fiber's growth, fiber preparation and fabric processing technology and conditions of burial or long term storage (1).Energy dispersive spectrometry has been reported to be suitable for determination of mordant treatment on historic fibers (2,3) and has been used to characterize metal wrapping of combination yarns (4,5). In this study, a technique is developed which provides fractured cross sections of fibers for x-ray analysis and elemental mapping. In addition, backscattered electron imaging (BSI) and energy dispersive x-ray microanalysis (EDS) are utilized to correlate elements to their distribution in fibers.

Calculating the aerodynamics of vertical axis wind turbines

2012 ◽  
Vol 34 (3) ◽  
pp. 169-184 ◽  
Author(s):  
Hoang Thi Bich Ngoc
Keyword(s):  
Wind Turbine ◽  
Incidence Angle ◽  
Vertical Axis ◽  
Rotor Blades ◽  
Vertical Axis Wind Turbine ◽  
Horizontal Axis Wind Turbine ◽  
Velocity Triangle ◽  
Relationship Of ◽  
The Relationship

Vertical axis wind turbine technology has been applied last years, very long after horizontal axis wind turbine technology. Aerodynamic problems of vertical axis wind machines are discussible. An important problem is the determination of the incidence law in the interaction between wind and rotor blades. The focus of the work is to establish equations of the incidence depending on the blade azimuth, and to solve them. From these results, aerodynamic torques and power can be calculated. The incidence angle is a parameter of velocity triangle, and both the factors depend not only on the blade azimuth but also on the ratio of rotational speed and horizontal speed. The built computational program allows theoretically selecting the relationship of geometric parameters of wind turbine in accordance with requirements on power, wind speed and installation conditions.

Evaluation on determination of iodine in coal by energy dispersive X-ray fluorescence

2005 ◽  
Vol 39 (4) ◽  
pp. 391-394 ◽  
Author(s):  
Binbin Wang ◽  
John C. Jackson ◽  
Curtis Palmer ◽  
Baoshan Zheng ◽  
Robert B. Finkelman
Keyword(s):  
Energy Dispersive ◽  
X Ray

Tire Treadwear — A Comprehensive Evaluation of the Factors: Generic Type, Aspect Ratio, Tread Pattern, and Tread Composition Part I: Introduction and Details on the Organization of the Program

1986 ◽  
Vol 14 (4) ◽  
pp. 201-218 ◽  
Author(s):  
A. G. Veith
Keyword(s):  
Aspect Ratio ◽  
Comprehensive Evaluation ◽  
Test Method ◽  
Interactive Effects ◽  
Data Analyses ◽  
Main Effect ◽  
Systematic Determination ◽  
Relationship Of ◽  
The Relationship

Abstract This four-part series of papers addresses the problem of systematic determination of the influence of several tire factors on tire treadwear. Both the main effect of each factor and some of their interactive effects are included. The program was also structured to evaluate the influence of some external-to-tire conditions on the relationship of tire factors to treadwear. Part I describes the experimental design used to evaluate the effects on treadwear of generic tire type, aspect ratio, tread pattern (groove or void level), type of pattern (straight rib or block), and tread compound. Construction procedures and precautions used to obtain a valid and functional test method are included. Two guiding principles to be used in the data analyses of Parts II and III are discussed. These are the fractional groove and void concept, to characterize tread pattern geometry, and a demonstration of the equivalence of wear rate for identical compounds on whole tread or multi-section tread tires.

Determination of small concentrations of hafnia in zirconia by selective excitation energy dispersive X-ray emission spectrometry

1994 ◽  
Vol 349 (6) ◽  
pp. 434-437 ◽  
Author(s):  
R. M. Agrawal ◽  
S. N. Jha ◽  
Rugmini Kaimal ◽  
S. K. Malhotra ◽  
B. L. Jangida
Keyword(s):  
Excitation Energy ◽  
Selective Excitation ◽  
Energy Dispersive ◽  
Emission Spectrometry ◽  
X Ray

ANALYSIS OF INDIAN SILVER COINS BY EDXRF TECHNIQUE

2009 ◽  
Vol 19 (03n04) ◽  
pp. 167-173 ◽  
Author(s):  
B. B. TRIPATHY ◽  
T. R. RAUTRAY ◽  
SATYA R. DAS ◽  
MANAS R. DAS ◽  
V. VIJAYAN
Keyword(s):  
Major Elements ◽  
Energy Dispersive ◽  
Fluorescence Technique ◽  
X Ray ◽  
British Rule ◽  
Edxrf Technique ◽  
Minor Concentration

The analysis of some of the Indian silver coins during British rule were analysed by Energy Dispersive X-Ray Fluorescence Technique. Eight elements namely Cr , Fe , Ni , Cu , Zn , As , Ag and Pb were estimated in this study which also seems to indicate the fragmentation as well as the impoverishment of the power for the regimes that had produced the studied coins. While Cu and Ag were present as major elements, other elements were found to be present in minor concentration.

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