The Relationship of X-Ray Induced Recessive Lethals to Chromosomal Breakage

1946 ◽  
Vol 80 (794) ◽  
pp. 588-592 ◽  
Author(s):  
Irwin H. Herskowitz
Keyword(s):  
Chromosomal Breakage ◽  
X Ray ◽  
Relationship Of ◽  
The Relationship

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.

Synthese und Röntgenstrukturanalyse von KCuGd2Mo4O16 und KCuTb2Mo4O16/Synthesis and X-Ray Analysis of KCuGd2Mo4O16 and KCuTb2Mo4O16

1995 ◽  
Vol 50 (12) ◽  
pp. 1794-1798 ◽  
Author(s):  
Hk. Müller-Buschbaum ◽  
St. Gallinat
Keyword(s):  
Lattice Energy ◽  
Rare Earth Ions ◽  
Monoclinic Symmetry ◽  
X Ray ◽  
Coulomb Term ◽  
Relationship Of ◽  
The Relationship ◽  
Symmetry Space ◽  
Oxidation State Of Copper ◽  
Symmetry Space Group

Single crystals of the so far unknown compounds KCuGd2Mo4O16 (I) and KCuTb2Mo4O16 (II) have been prepared by flux technique. The compounds crystallize with monoclinic symmetry. space group C62h-C2 /c with (I): a = 5.278(2), b = 12.666(5), c = 19.604(14) Å; β = 92.76(6)°; (II): a = 5.259(13), b = 12.616(3), c = 19.556(9) Å, β = 92.93(4)°, Z = 4. Molybdenum exhibits tetrahedral coordination. The surroundings of copper can be described by distorted tetrahedra, capped by two more distant oxygen atoms, and the rare earth ions show a square antiprism. Potassium is inside an irregular polyhedron. The relationship of the structures of (I) and (II) is discussed with respect to the KLnMo2O8 type compounds. Coulomb term calculations of the lattice energy indicate an oxidation state of copper higher than CuI.

X-ray diffraction studies of vivianite, metavivianite, and barićite

1985 ◽  
Vol 49 (350) ◽  
pp. 81-85 ◽  
Author(s):  
T. Sameshima ◽  
G. S. Henderson ◽  
P. M. Black ◽  
K. A. Rodgers
Keyword(s):  
Monoclinic Phase ◽  
Amorphous State ◽  
Twin Plane ◽  
Coarse Grained ◽  
X Ray Diffraction ◽  
X Ray ◽  
Triclinic Phase ◽  
Type Lattice ◽  
Relationship Of ◽  
The Relationship

AbstractVivianite specimens from various world localities yield X-ray powder patterns of two types: one corresponds with that shown by synthetic Fe3(PO4)2· 8H2O and is not readily distinguished from that of barićite; the second shows reflections of monoclinic vivianite and triclinic metavivianite along with reflections of a bobierrite-type phase. The triclinic phase occurs as two twin-related lattices with twin plane 110 being the structural equivalent of 010 in the monoclinic phase. The relationship of the bobierrite-type lattice to the other two has not been established. The ternary pattern is produced by some coarse-grained vivianites on natural oxidation. Finer grained vivianites oxidise to an X-ray amorphous state without passing through a triclinic intermediate.

Synthesis and Characterization of the First 1:2 Ordered Perovskite Ruthenate

2002 ◽  
Vol 718 ◽  
Author(s):  
Job Rijssenbeek ◽  
Sylvie Malo ◽  
Takashi Saito ◽  
Vincent Caignaert ◽  
Masaki Azuma ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Neutron Diffraction ◽  
Structure Type ◽  
Synthesis And Characterization ◽  
Neutron Diffraction Data ◽  
X Ray ◽  
Relationship Of ◽  
The Relationship ◽  
Perovskite Lattice

AbstractPerovskite-like mixed metal ruthenates are of interest owing to their varied electronic and magnetic properties, which are heavily dependent on the ordering of the transition metals. We report the synthesis and structural characterization of the first 1:2 ordered perovskite ruthenate, Sr3CaRu2O9. The structure was determined from a combination of powder X-ray, electron and neutron diffraction data and is characterized by a 1:2 ordering of Ca2+ and Ru5+ over the sixcoordinate B-sites of the perovskite lattice. Sr3CaRu2O9 is the first example of this structure-type to include a majority metal with d electrons (Ru(V), d3). The relationship of this material to the K2NiF4-type Sr1.5Ca0.5RuO4 (i.e., Sr3CaRu2O8) highlights the dramatic effects of the ruthenium valence on the resultant structure. Remarkably, these two structures can be quantitatively interconverted by the appropriate choice of reaction temperature and atmosphere.

The Oblique Lateral Jaw Radiograph

1974 ◽  
Vol 1 (4) ◽  
pp. 139-142
Author(s):  
C. P. Adams
Keyword(s):  
Present Article ◽  
Third Molar ◽  
Third Molars ◽  
X Ray ◽  
The Third ◽  
Molar Teeth ◽  
Relationship Of ◽  
The Relationship ◽  
Film Area

The Oblique Lateral Jaw Radiograph has been used as a routine diagnostic x-ray view for many years as an aid to orthodontic diagnosis and for the assessment of the positions of unerupted third molar teeth. Many methods for obtaining clear undistorted views of the teeth have been suggested from a freehand setting up of film, patient and x-ray tube, to the use of simple orientated devices. The present article describes a method of standardizing the relationship of film and x-ray tube to one another so that it is only necessary for the radiographer thereafter to place the patient on the film area in a manner depending on whether a view. is required of the third molars only or of the complete upper and lower buccal segments.

Collaboration or Appropriation? Examining a 17th c. Panel by David Teniers the Younger and Jan Brueghel the Younger Using Confocal X-Ray Fluorescence Microscopy

2007 ◽  
Vol 1047 ◽  
Author(s):  
Jennifer L. Mass ◽  
Arthur R. Woll ◽  
Noelle Ocon ◽  
Christina Bisulca ◽  
Tomasz Wazny ◽  
...  
Keyword(s):  
Fluorescence Microscopy ◽  
Cross Sections ◽  
Historical Research ◽  
Middle Ground ◽  
X Ray ◽  
Visual Elements ◽  
Bottom Left ◽  
Relationship Of ◽  
The Relationship

AbstractThe 17th c. Flemish painting on panel, The Armorer's Shop, has long been attributed to David Teniers the Younger (1610-1690). The painting depicts an opulent pile of parade armor at the bottom left foreground, a seated armorer at the bottom right foreground, and a forge surrounded by workers in the middle ground. The Teniers attribution is derived from his signature at the bottom right as well as figural groups and other visual elements that are commonly associated with him and executed in his style. During dendrochronological examination of the painting, a portion of the oak plank comprising the overall structure was found to have been carved out so that a smaller plank (containing the parade armor) could be inserted into the resulting depression. This unusual construction, combined with the identification of several paintings by Jan Brueghel the Younger (1601-1678) depicting the same parade armor, raised questions about the attribution and chronology of construction of the painting. Art historical research suggests that the smaller plank with the armor was painted by Brueghel and that the remainder of the panel with the workers and forge was painted by his brother-in-law Teniers. While Brueghel writes of collaborating with Teniers in his journal, this appears to be the only identified collaboration of the two artists. Conventional microanalysis methods did not resolve the painting's construction chronology. However, confocal x-ray fluorescence microscopy (CXRF) revealed the composition and location of buried paint layers at the panel interfaces by combining depth scans at a number of adjacent lateral positions to produce virtual cross-sections over 20 mm in length. The relationship of the paint layers at the panel interfaces provided evidence for the armor panel having been painted separately and prior to the rest of the composition. This data, along with dendrochronological and IRR data, provided a chronology of construction for the painting that provided additional evidence for a Brueghel attribution. An overview of the CXRF technique will be provided along with a discussion of how CXRF data relates to data collected using SEM-EDS, FTIR, Raman, conventional XRF, x-radiography, IRR, and dendrochronology.

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