On the Microstructure of Different Types of Particles in PM10 in Beijing-Tianjin-Tangshan City Group Agglomeration Atmosphere

2013 ◽  
Vol 448-453 ◽  
pp. 341-348 ◽  
Author(s):  
Shi Hong Cen ◽  
Xiao Yan Song ◽  
Long Yi Shao ◽  
Bing Yan ◽  
Yan Li Wu ◽  
...  
Keyword(s):  
Research Result ◽  
Urban Agglomeration ◽  
Spherical Particles ◽  
Distribution Characteristics ◽  
Analysis Software ◽  
Image Analysis Software ◽  
Mineral Particles ◽  
Different Types ◽  
City Group ◽  
Scanning Electron

This paper analyses the microstructure of different types of particles in PM10in Beijing-Tianjin-Tangshan urban agglomeration atmosphere in spring and summer by using field emission scanning electron microscopy (FESEM), in which the distribution characteristics of the size and number of the different types of particles in PM10are specifically analyzed by using image analysis software. The research result shows that the types of particles in Beijing-Tianjin-Tangshan urban agglomeration atmosphere are unknown particles, soot aggregates, mineral particles and spherical particles. According to the proportion of the three partials in the atmosphere, the three cities ranks as follows: in the aspect of unknown particles, Tianjin ranks first, which is followed by Tangshan and Beijing; in the aspect of soot aggregates, Tangshan ranks first ,which is followed by Beijing and Tianjin; in the aspect of mineral particles, Beijing ranks first ,which is followed by Tangshan and Tianjin; in the aspect of spherical particles, Beijing ranks first ,which is followed by Tangshan and Tianjin;

A technique to quantify and characterize the density of fibres and follicles in the skin of sheep

1995 ◽  
Vol 46 (8) ◽  
pp. 1525 ◽  
Author(s):  
BN Nagorcka ◽  
AE Dollin ◽  
DE Hollis ◽  
CD Beaton
Keyword(s):  
Low Cost ◽  
Skin Surface ◽  
Analysis Software ◽  
Sem Images ◽  
Fibre Bundles ◽  
Image Analysis Software ◽  
Skin Biopsies ◽  
The Cost ◽  
Non Destructive ◽  
Scanning Electron

A description is given of a non-destructive technique to count fibres and quantify their relative positions in the skin of sheep by making impressions of the skin surface of live sheep. Each impression contains within it clear morphological structures caused by individual wool fibres as they emerge from individual follicles, and clusters of wool fibres emerging from follicle bundles. Individual fibres and clusters of fibres can also be seen to be grouped together forming 'follicle groups'. The detailed accuracy of the impressions is confirmed by examining scanning electron microscope (SEM) images of a model of the skin obtained using the skin impression, and by examining SEM images of the impression itself. The impressions of individual fibres and clusters of fibres (produced from follicle bundles) appear to be countable using image analysis software. The new technique provides a low cost method (i.e. low relative to the cost of analysing skin biopsies) for measuring the density of fibres and fibre bundles, and the number of fibres per bundle in the skin. The measurements are expected to be of significant commercial interest to wool breeders.

scholarly journals First report of Diplostomidae metacercariae (Trematoda: Digenea) in African catfish Clarias gariepinus (Siluriformes: Clariidae) in Brazil

2019 ◽  
Vol 28 (4) ◽  
pp. 677-684
Author(s):  
Juliana Souza Ribeiro ◽  
Francisco Carlos Rodrigues de Oliveira ◽  
Nicole Brand Ederli
Keyword(s):  
Clarias Gariepinus ◽  
Paratenic Host ◽  
Body Cavity ◽  
African Catfish ◽  
Analysis Software ◽  
First Report ◽  
Image Analysis Software ◽  
The Family ◽  
The City ◽  
Scanning Electron

Abstract Clarias gariepinus is a fish from North of South Africa and was later introduced in several countries, including Brazil. The present study aimed to describe the first report of Diplostomidae metacercariae in C. gariepinus in Brazil. For this, 30 C. gariepinus were captured in a lake in the city of Campos dos Goytacazes, RJ, Brazil. Fishes were euthanized using freezing and necropsied for collection of parasites. The organs were dissected and analyzed for the presence of parasites that were processed for light and scanning electron microscopy. Trematodes were stained with Semichon’s Carmine and Gomori’s Trichrome, observed and schematized under a light microscope with image analysis software. A total of 190 trematodes were collected from the gills, suprabranchial organs, heart, stomach, intestinal mesentery, liver and body cavity of the fish. The parasites had a foliaceous body divided by a discrete constriction, without genital primordia, and a holdfast organ present at the posterior region, typical of metacercariae of the family Diplostomidae. It was classified as the 'Diplostomulum' morphotype, based on the morphology of the reserve bladder structure. This is the first report of the metacercariae of Diplostomidae parasitizing C. gariepinus in the Americas. This fish acts as an intermediate or paratenic host of this digenean in Brazil.

Ciliary count in chronic suppurative otitis media: comparative quantitative study between mucosal and squamous types using scanning electron microscopy and image analysis

2004 ◽  
Vol 118 (5) ◽  
pp. 343-347 ◽  
Author(s):  
Ahmed Atef ◽  
Essam Ezat Ayad
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Image Analysis ◽  
Otitis Media ◽  
Quantitative Study ◽  
Chronic Suppurative Otitis Media ◽  
Analysis Software ◽  
Suppurative Otitis Media ◽  
Image Analysis Software ◽  
Scanning Electron

The objective of this study was to prove ciliary destruction in the middle-ear mucous membrane in cases of chronic suppurative otitis media (CSOM) and to compare both types of chronic suppurative otitis media with regard to the degree of ciliary destruction and ciliary count using objective quantitative techniques. The mucosa of the anterior mesotympanum over the promontory was sampled in 10 patients with mucosal CSOM and in another 10 patients with squamous type CSOM. Specimens were examined by scanning electron microscopy in combination with image analysis software techniques in order to study the cilia under higher magnifications and to calculate the ciliary area. Five patients with otosclerosis, no history suggestive of otitis media and normal ear drum appearance served as controls. Samples were taken and studied at the Faculty of Medicine of Cairo University. CSOM was found to be associated with significant ciliary destruction and this was more evident in the squamous type than in the mucosal type.

Effect of P and Ge doping on microstructure of Sn-0.3Ag-0.7Cu/Ni-P solder joints

2016 ◽  
Vol 28 (4) ◽  
pp. 215-221 ◽  
Author(s):  
Xingchen Yan ◽  
Kexin Xu ◽  
Junjie Wang ◽  
Xicheng Wei ◽  
Wurong Wang
Keyword(s):  
Design Methodology ◽  
Solder Bump ◽  
Solder Joints ◽  
Diffusion Rate ◽  
Analysis Software ◽  
Content Type ◽  
Image Analysis Software ◽  
Interfacial Intermetallic Compound ◽  
Ge Doping ◽  
Scanning Electron

Purpose The purpose of this paper is to comparatively investigate the microstructure and interfacial intermetallic compound (IMC) layer of Cu/SACPG/Ni and Cu/SAC0307/Ni solder joints after thermal aging. Design/methodology/approach The specimens were thermally aged at 150°C for 0, 24, 168 and 500 h. The microstructure and morphology of the interface IMC layer were observed by means of scanning electron microscope. The IMCs and the solder bump surface were analyzed by EDS. Moreover, the thickness of IMC layer was measured by using the image analysis software. Findings The morphology of IMC of Cu/SAC0307/Ni solder joint was consistent with that of the Cu/SACPG/Ni joint, which indicates that the addition of P and Ge had little effect on the IMC formation. The needle-like (Cu,Ni)6Sn5 was formed at the interface of solder/Ni solder joints. Meanwhile, the tiny particles inferred as Ag3Sn phase attached to the surface of (Cu,Ni)6Sn5. The growth rate of IMC layer of the Cu/SACPG/Ni joint was smaller than that of Cu/SAC0307/Ni joint with aging time increasing, which means the addition of trace P and Ge can slightly suppress the diffusion rate of the interfacial IMC. Originality/value There are no previous studies on the formation mechanism of the IMC layer of SAC0307 solder alloys with P and Ge addition.

Impact of image analysis software on quantitation of 1D gel electrophoresis analysis/Einfluss der Bildanalysesoftware auf die Bewertung von 1D Gelelektrophoresen

2012 ◽  
Vol 36 (3) ◽  
Author(s):  
Franka Kahlenberg ◽  
Ulrich Sack ◽  
Andreas Boldt
Keyword(s):  
Image Analysis ◽  
Serum Protein ◽  
Gel Electrophoresis ◽  
Reference Data ◽  
Reference Standard ◽  
Analysis Software ◽  
Image Analysis Software ◽  
Wide Range ◽  
Different Types ◽  
Incorrect Data

AbstractImage analysis of 1D gel electrophoresis can be performed by numerous types of software. The results are used, e.g., to create reference data or for association with diseases. In this study, we analyzed statistical differences between two types of established image analysis software. The aim was to inform customers that different types of software may produce various results which may lead to different data interpretations.Automated serum protein electrophoresis (albumin, α1-globulin, α2-globulin, β-globulin and γ-globulin) was performed with sera from 25 patients (randomized). Gel bands were quantitatively analyzed by TotalLab 120 (TL120), LabImage 1D (L340) and Phoresis (reference standard). Finally, the degree of deviation (vs. reference standard) of obtained data was investigated by statistical methods (Bland-Altman, Passing-Bablok, reliability).Passing-Bablok analysis: in L340 and TL120 linearity of test data vs. reference data was passed (p<0.01; L340: y=0.00+1.00x vs. TL120: y=–0.01+1.02x). Bland-Altman analysis: L340 exhibited a lower deviation and standard deviation to reference (mean: –1.5%; SD: 23.0% to –25.9%) vs. TL120 (mean: –8.2%; SD: 32.6% to –48.6%). Reliability: L340 (k=0.404; 95% CI=0.315–0.493) vs. TL120 (k=0.105; 95% CI=0.105–0.245). Detailed serum protein analysis revealed that most data (except α1-globulin) obtained by L340 were within 5% tolerance range, in contrast to data from TL120 (mean%±SEM%: albumin: 0.68±0.49 vs. 6.26±1.44; α1-globulin: –10.80±3.02 vs. –33.72±4.78; α2-globulin: –2.19±1.75 vs. –16.51±2.13; β-globulin: 0.99±1.67 vs. –9.84±2.78; γ-globulin: –1.44±1.73 vs. 5.00±5.67).In this study, it was shown that 1D electrophoresis data varied in a wide range depending on the type of image software. Awareness of these facts and sensible choice of 1D electrophoresis image software may help avoid incorrect data analysis.

Scanning electron microscopy of asbestos-containing material where the asbestos fibers are considered locked in a binder

1993 ◽  
Vol 51 ◽  
pp. 472-473
Author(s):  
J. R. Millette ◽  
R. S. Brown
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Environmental Protection Agency ◽  
Building Materials ◽  
The United States ◽  
Protection Agency ◽  
Asbestos Fibers ◽  
Different Types ◽  
Binder Material ◽  
Scanning Electron

The United States Environmental Protection Agency (EPA) has labeled as “friable” those building materials that are likely to readily release fibers. Friable materials when dry, can easily be crumbled, pulverized, or reduced to powder using hand pressure. Other asbestos containing building materials (ACBM) where the asbestos fibers are in a matrix of cement or bituminous or resinous binders are considered non-friable. However, when subjected to sanding, grinding, cutting or other forms of abrasion, these non-friable materials are to be treated as friable asbestos material. There has been a hypothesis that all raw asbestos fibers are encapsulated in solvents and binders and are not released as individual fibers if the material is cut or abraded. Examination of a number of different types of non-friable materials under the SEM show that after cutting or abrasion, tuffs or bundles of fibers are evident on the surfaces of the materials. When these tuffs or bundles are examined, they are shown to contain asbestos fibers which are free from binder material. These free fibers may be released into the air upon further cutting or abrasion.

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