Scanning Electron Microscopic Evidence of Spontaneous Heteropeptide Formation in Abiotic Solutions of Selected α-Amino Acid Pairs

2016 ◽  
Vol 56 (11-12) ◽  
pp. 1057-1066 ◽  
Author(s):  
Agnieszka Godziek ◽  
Anna Maciejowska ◽  
Ewa Talik ◽  
Mieczysław Sajewicz ◽  
Teresa Kowalska
Keyword(s):  
Amino Acid ◽  
Electron Microscopic ◽  
Microscopic Evidence ◽  
Scanning Electron Microscopic ◽  
Scanning Electron

Scanning electron microscopic evidence for physical segmental boundaries in the anterior presomitic mesoderm

2013 ◽  
Vol 195 (5) ◽  
pp. 484-487 ◽  
Author(s):  
Qin Pu ◽  
Ketan Patel ◽  
Jürgen Berger ◽  
Bodo Christ ◽  
Ruijin Huang
Keyword(s):  
Presomitic Mesoderm ◽  
Electron Microscopic ◽  
Microscopic Evidence ◽  
Scanning Electron Microscopic ◽  
Scanning Electron

Transmission and scanning electron microscopic evidence for cytoplasmic deposition of strontium sulphate crystals in colonial radiolaria

1990 ◽  
Vol 329 (1252) ◽  
pp. 81-86 ◽  
Keyword(s):  
Surface Chemistry ◽  
Crystal Morphology ◽  
Electron Microscopic ◽  
Microscopic Evidence ◽  
Square Prism ◽  
Scanning Electron Microscopic ◽  
Biological Structures ◽  
Mineral Interfaces ◽  
Scanning Electron

Colonial radiolaria are multicellular marine protozoa (Sarcodina) that reproduce by flagellated swarmers, each containing a vacuolar-enclosed crystal of celestite (SrSO 4 ). The crystal morphology (an elongated square prism with pairs of triangular end faces) is unusual compared with crystals produced directly from solution. The crystals of radiolarian swarmers are deposited within a cytoplasmic envelope, separate from the surrounding vacuolar wall, and are subsequently enclosed by an organic coat ( ca . 500-1000 ņ thick) apparently deposited by the cytoplasmic envelope. The enclosing biological structures may account for the unusual morphology of the crystals, and offer further evidence that the process of crystallization, and ultimate crystal morphology, can be influenced markedly by surface chemistry at organo-mineral interfaces.

Scanning electron microscopic evidence of bacterial overgrowth in intertrigo

1981 ◽  
Vol 8 (4) ◽  
pp. 273-276 ◽  
Author(s):  
Craig G. Burkhart ◽  
Mary Beth Mulholland ◽  
Jeffrey C. Burnham
Keyword(s):  
Bacterial Overgrowth ◽  
Electron Microscopic ◽  
Microscopic Evidence ◽  
Scanning Electron Microscopic ◽  
Scanning Electron

Scanning electron-microscopic evidence for attachment of a nonpersistently transmitted virus to its vector's stylets

Virology ◽  
1977 ◽  
Vol 79 (1) ◽  
pp. 121-128 ◽  
Author(s):  
W.L. Lim ◽  
G.A. De Zoeten ◽  
D.J. Hagedorn
Keyword(s):  
Electron Microscopic ◽  
Transmitted Virus ◽  
Microscopic Evidence ◽  
Scanning Electron Microscopic ◽  
Scanning Electron

Scanning electron microscopic evidence for neural differentiation in Ewing's sarcoma cell lines

1990 ◽  
Vol 416 (5) ◽  
pp. 383-391 ◽  
Author(s):  
Samuel Navarro ◽  
Manuel González-Devesa ◽  
Antonio Ferrández-Izquierdo ◽  
Timothy J. Triche ◽  
Antonio Llombart-Bosch
Keyword(s):  
Cell Lines ◽  
Neural Differentiation ◽  
Ewing’S Sarcoma ◽  
Ewing's Sarcoma ◽  
Sarcoma Cell ◽  
Electron Microscopic ◽  
Microscopic Evidence ◽  
Scanning Electron Microscopic ◽  
Scanning Electron

Scanning Electron Microscopic Study of the Cell Surface

1969 ◽  
Vol 27 ◽  
pp. 36-37 ◽  
Author(s):  
Toichiro Kuwabara
Keyword(s):  
Tissue Fluid ◽  
Biological Application ◽  
Biological Structure ◽  
Electron Microscopic ◽  
Surface Appearance ◽  
Minute Amount ◽  
Scanning Electron Microscopic Study ◽  
Scanning Electron Microscopic ◽  
True Structure ◽  
Scanning Electron

Although scanning electron microscopy has a great potential in biological application, there are certain limitations in visualization of the biological structure. Satisfactory techniques to demonstrate natural surfaces of the tissue and the cell have been reported by several investigators. However, it is commonly found that the surface cell membrane is covered with a minute amount of mucin, secretory substance or tissue fluid as physiological, pathological or artefactual condition. These substances give a false surface appearance, especially when the tissue is fixed with strong fixatives. It seems important to remove these coating substances from the surface of the cell for demonstration of the true structure.

A scanning electron microscopic study on dissolving process of cholesterol gallstones by chenodeoxycholic acid (CDCA)

1978 ◽  
Vol 36 (2) ◽  
pp. 522-523
Author(s):  
T. Kanetaka ◽  
M. Cho ◽  
S. Kawamura ◽  
T. Sado ◽  
K. Hara
Keyword(s):  
Electron Microscope ◽  
Chenodeoxycholic Acid ◽  
Outer Surface ◽  
Electron Microscopic ◽  
Cholesterol Gallstones ◽  
The Core ◽  
Scanning Electron Microscopic Study ◽  
Scanning Electron Microscopic ◽  
Acceleration Voltage ◽  
Scanning Electron

The authors have investigated the dissolution process of human cholesterol gallstones using a scanning electron microscope(SEM). This study was carried out by comparing control gallstones incubated in beagle bile with gallstones obtained from patients who were treated with chenodeoxycholic acid(CDCA).The cholesterol gallstones for this study were obtained from 14 patients. Three control patients were treated without CDCA and eleven patients were treated with CDCA 300-600 mg/day for periods ranging from four to twenty five months. It was confirmed through chemical analysis that these gallstones contained more than 80% cholesterol in both the outer surface and the core.The specimen were obtained from the outer surface and the core of the gallstones. Each specimen was attached to alminum sheet and coated with carbon to 100Å thickness. The SEM observation was made by Hitachi S-550 with 20 kV acceleration voltage and with 60-20, 000X magnification.

A Comparative Study of Fractographic Replicas

1974 ◽  
Vol 32 ◽  
pp. 566-567
Author(s):  
Loren Anderson ◽  
Pat Pizzo ◽  
Glen Haydon
Keyword(s):  
Electron Microscopy ◽  
Electron Microscopic Examination ◽  
Direct Examination ◽  
Electron Microscopic ◽  
Reliable Technique ◽  
Service Failures ◽  
Transmission Electron ◽  
Mode Of Failure ◽  
Scanning Electron Microscopic ◽  
Scanning Electron

Transmission electron microscopy of replicas has long been used to study the fracture surfaces of components which fail in service. Recently, the scanning electron microscope (SEM) has gained popularity because it allows direct examination of the fracture surface. However, the somewhat lower resolution of the SEM coupled with a restriction on the sample size has served to limit the use of this instrument in investigating in-service failures. It is the intent of this paper to show that scanning electron microscopic examination of conventional negative replicas can be a convenient and reliable technique for determining mode of failure.

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