A FIELD‐ORIENTED TECHNIQUE FOR PRODUCING HIGH‐QUALITY PREPARATIONS OF PLANT SURFACES FOR SCANNING ELECTRON MICROSCOPY

Taxon ◽  
1986 ◽  
Vol 35 (2) ◽  
pp. 295-297 ◽  
Author(s):  
Curtis Clark ◽  
Donald L. Sanders ◽  
Nancy Charest
1997 ◽  
Vol 5 (4) ◽  
pp. 14-15
Author(s):  
John F. Mansfield

The current imaging trend in optical microscopy, scanning electron microscopy (SEM) or transmission electron microscopy (TEM) is to record all data digitally. Most manufacturers currently market digital acquisition systems with their microscope packages. The advantages of digital acquisition include: almost instant viewing of the data as a high-quality positive image (a major benefit when compared to TEM images recorded onto film, where one must wait until after the microscope session to develop the images); the ability to readily quantify features in the images and measure intensities; and extremely compact storage (removable 5.25” storage devices which now can hold up to several gigabytes of data).


2019 ◽  
Vol 187 (1) ◽  
pp. 117-142 ◽  
Author(s):  
Petra Sierwald ◽  
Derek A Hennen ◽  
Xavier J Zahnle ◽  
Stephanie Ware ◽  
Paul E Marek

Abstract The species of the eastern North American millipede genus Pseudopolydesmus are reviewed. Synonyms and comprehensive literature citations are provided for each of the eight recognized species. Diagnostic morphology of the genus, including clarification of male gonopod terminology, is reviewed and defined using scanning electron microscopy and high-quality macrophotographic images, including those in which ultraviolet fluorescence was induced to produce detailed images of morphological structures. Based on the examination of available type material, the following eight species are recognized: (1) Pseudopolydesmus erasus; (2) Pseudopolydesmus canadensis; (3) Pseudopolydesmus collinus; (4) Pseudopolydesmus pinetorum; (5) Pseudopolydesmus minor; (6) Pseudopolydesmus caddo; (7) Pseudopolydesmus paludicolus; and (8) Pseudopolydesmus serratus. The species names Polydesmus neoterus and Polydesmus euthetus are here placed as junior subjective synonyms of Ps. minor (both syn. nov.), and Polydesmus natchitoches is placed as a junior subjective synonym of Ps. pinetorum (syn. nov.).


2012 ◽  
Vol 531 ◽  
pp. 379-382 ◽  
Author(s):  
Wei Lin Shi ◽  
Ye Fei Jin ◽  
Qian Xu

We present the surface microstructure of pearls in bionic materials investigated by means of scanning electronic microscopy (SEM). We found that surface microstructure of pearls in bionic materials with superior luster and quality are built up by aragonite blocks with regular shape, such as around, polygon or diamond, while pearls high luster are composed of by spindly shaped blocks, and pearls with weak luster and quality are made of some undefined aragonite blocks. Clearly, the regular shaped aragonite blocks are the most idea blocks in crystallography for building high quality pearls. The study of surface microstructure pearl in bionic materials will be helpful for the development of bionic materials.


2005 ◽  
Vol 19 (15n17) ◽  
pp. 2763-2768 ◽  
Author(s):  
GUOBIN MA ◽  
XIAONING ZHAO ◽  
JIANMIN ZHU

We present in this paper the synthesis of rutile TiO 2 nanorods using an efficient microwave hydrothermal method. The product was characterized by X-ray diffraction, scanning electron microscopy and transmission electron microscopy, and the results indicated the growth of high quality rutile nanorods along the c-axis of rutile TiO 2 and the radial aggregation of them into spherical secondary nanoparticles.


2011 ◽  
Vol 399-401 ◽  
pp. 569-572
Author(s):  
Zao Ming Chen ◽  
Xi Rong Chen ◽  
De Yuan Hu

High quality NaYF4and NaYF4:Er3+materials were prepared using EDTA-assisted hydrothermal method. The effects of doping of Er3+on the shape of samples were discussed. The samples were characterized by X-ray powder diffraction (XRD), and scanning electron microscopy (SEM). XRD patterns show that the samples are hexagonal phase of NaYF4and NaYF4:Er3+with good crystallization. SEM images present that the samples of NaYF4are homogeneous nanorods with a diameter of 342 nm and a length of 1043nm,the NaYF4:Er3+(5%) sample with a diameter of180.7nm and a length of 1220nm, and NaYF4:Er3+(10%) with a diameter of 139.4nm and a length of 939.9nm.The sizes of the NaYF4and NaYF4:Er3+nanoparticles are basically consistent with that calculated from XRD peak via the Scherrer equation.


2013 ◽  
Vol 734-737 ◽  
pp. 189-193
Author(s):  
Qing Guo Zhang ◽  
Yi He Li

Shuguang lower hill is buried 3500 metres below the band, the exploration difficulty is big and high quality recognition is difficult. According to its complex lithology characteristics, poor porosity and strong heterogeneity, with the application of comprehensive conventional coring, thin-section analysis, scanning electron microscopy and conventional curve data for analysis of reservoir characteristics of the lower hill, lithology and reservoir criterion are established, more over the fracture strata section of the hill is identified. The reservoirs are mainly composed of carbonate rocks and quartzite, the accurate lithology identification provides geological basis for the next step of well deployment.


Author(s):  
P. Dayanandan ◽  
P. B. Kaufman

Previous studies and our own observations of surface features in more than 80 species show that the SEM can be of great value in determining the nature and distribution of stomata, trichomes, wax, cuticular ridges, silica bodies, spores and other particulate pollutants as well as meristems and their derivatives. We suggest applications of surface studies to the fields of taxonomy and plant water relations.Many epidermal surfaces can be observed with or without coating at 15 KeV with no detectable alterations in the wax pattern. Wax is deposited as granular, rod-like, thread-like or plate-like structures. Of particular interest are the wax patterns around stomatal apparatuses.


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