Comparative study with scanning electron microscopy on the antennal sensilla of two main castes of Coptotermes formosanus Shiraki (Blattaria:Rhinotermitidae)

Purpose. To compare the capsule edges ultrastructure obtained by two femtosecond laser-assisted cataract surgery (FLACS) platforms and manual continuous curvilinear capsulorhexis (CCC) using scanning electron microscopy (SEM). Setting. Eye Clinic, University of Trieste, Italy. Design. Experimental comparative study. Methods. 150 anterior capsules were collected and divided into three groups as follows: Group 1 (50 capsules) obtained with manual CCC, Groups 2 and 3 (each with 50 capsules) obtained with the Catalys Laser and the LenSx Laser, respectively. All samples were imaged by means of SEM and regularity of the cut surface, and thickness of the capsule edge were evaluated and compared. Results. All femtosecond laser (FSL) capsules were perfectly circular, whereas some alteration of the circular shape was observed in the manual ones. Group 1 showed a smooth and regular capsule edge without any surface irregularity, conversely Groups 2 and 3 showed postage-stamp perforations on the capsule edge. The cut surface irregularity value in Group 2 was 1.4 ± 0.63, while it was 0.7 ± 0.49 in Group 3 (p<0.05). Group 1 had a significantly lower thickness of the capsule edge than the FSL groups (p<0.05). No statistically significant difference in the capsule edge thickness between the FSL groups was found (p=0.244). Conclusions. Despite the presence of slight cut surface irregularities, both FSL capsulotomies showed a better geometry and circularity than the manual ones. Capsulotomy specimens obtained using both FSL capsulotomies showed laser-induced alterations of the capsule edge when compared with smooth and regular edges obtained using manual CCC.

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A Comparative Study of Trichomes in Angophora Cav. And Eucalyptus L'hérit. - A Question of Homology

Australian Journal of Botany ◽

10.1071/bt9840561 ◽

1984 ◽

Vol 32 (5) ◽

pp. 561 ◽

Cited By ~ 14

Author(s):

PY Ladiges

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Comparative Study ◽

Light Microscopy ◽

Evolutionary Trends ◽

Oil Glands ◽

Ancestral Condition ◽

Scanning Electron

The trichomes of Angophora and Eucalyptus are illustrated from scanning electron microscopy and light microscopy, and evolutionary trends are discussed. Bristle glands of Angophora and Eucalyptus subgen. Blakella and Corymbia are emergent oil glands of varying lengths. Emergent oil glands occur in all other Eucalyptus subgenera but they are most conspicuous in Blakella, Corymbia and Angophora, in which they are characterized by four cap cells each ornamented with micropapillae. Hairs in Angophora are unique, being multicellular; they are also uniseriate and scattered on the epidermis. In contrast, hairs in Eucalyptus are simple extensions, short or long, of the cells on the sides of or the cap cells of the emergent oil glands, and they are not homologous with those of Angophora. Eucalyptus setosa (subgen. Blakella) and E. brockwayi (subgen. Symphyomyrtus) are two exceptions, having unicellular hairs on the epidermis, not associated with oil glands. It is suggested that this is an ancestral condition (or secondary reversal to it).

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Comparative Study of Field Emission-Scanning Electron Microscopy and Atomic Force Microscopy to Assess Self-assembled Monolayer Coverage on Any Type of Substrate

Microscopy and Microanalysis ◽

10.1017/s1431927699990475 ◽

1999 ◽

Vol 5 (6) ◽

pp. 413-419 ◽

Cited By ~ 10

Author(s):

Bernardo R.A. Neves ◽

Michael E. Salmon ◽

Phillip E. Russell ◽

E. Barry Troughton

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Atomic Force Microscopy ◽

Comparative Study ◽

Field Emission ◽

Self Assembled Monolayer ◽

Force Microscopy ◽

Atomic Force ◽

Self Assembled ◽

Scanning Electron

Abstract: In this work, we show how field emission–scanning electron microscopy (FE-SEM) can be a useful tool for the study of self-assembled monolayer systems. We have carried out a comparative study using FE-SEM and atomic force microscopy (AFM) to assess the morphology and coverage of self-assembled monolayers (SAM) on different substrates. The results show that FE-SEM images present the same qualitative information obtained by AFM images when the SAM is deposited on a smooth substrate (e.g., mica). Further experiments with rough substrates (e.g., Al grains on glass) show that FE-SEM is capable of unambiguously identifying SAMs on any type of substrate, whereas AFM has significant difficulties in identifying SAMs on rough surfaces.

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A comparative study of techniques for the examination of biofilms by scanning electron microscopy

Water Research ◽

10.1016/0043-1354(84)90173-8 ◽

1984 ◽

Vol 18 (6) ◽

pp. 767-773 ◽

Cited By ~ 48

Author(s):

S.R. Richards ◽

R.J. Turner

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Comparative Study ◽

Scanning Electron

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Antennal Sensilla of Chrysis shanghalensis (Hymenoptera: Chrysididae), a Larval Ectoparasite of Monema flavescens (Lepidoptera: Limacodidae)

Journal of Entomological Science ◽

10.18474/0749-8004-56.1.1 ◽

2021 ◽

Vol 56 (1) ◽

pp. 1-11

Author(s):

Shu Z. Yang ◽

Mei H. Yang ◽

Yun Xu ◽

Jin T. Zhang

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Natural Enemy ◽

Tree Species ◽

External Morphology ◽

Antennal Sensilla ◽

Sensilla Basiconica ◽

Sensilla Trichodea ◽

Males And Females ◽

Scanning Electron

Abstract Chrysis shanghalensis Smith (Hymenoptera: Chrysididae) is an ectoparasitoid and important natural enemy of Monema flavescens Walker (Lepidoptera: Limacodidae), a serious defoliator of a number of tree species. The external morphology of the antennal sensilla of this parasitoid was examined by scanning electron microscopy, and types and distribution of sensilla were recorded. The antennae of C. shanghalensis were geniculate in shape and composed of a scape with radicula, a pedicel, and a flagellum divided into 11 flagellomeres in males and females. Cuticular pore and 14 types of sensilla were identified on the antennae of both sexes. These included aporous Böhm's bristles, sensilla trichodea 1, 2, and 3 (nonporous), sensilla trichodea 4 (multiporous), two types of sensilla chaetica (nonporous), four morphological types of sensilla basiconica (multiporous), two morphological types of sensilla coeloconica (multiporous), and one type of sensillum campaniforme (nonporous).

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