Derivation of parent fracture population statistics from trace length measurements of fractal fracture populations

The ribonucleic acid (RNA) of paramyxoviruses has been characterized by biochemical and physiochemical methods. However, paramyxovirus RNA molecules have not been studied by electron microscopy. The molecular weights of these single-stranded viral RNA molecules are not known as yet. Since electron microscopy has been found to be useful for the characterization of single-stranded RNA, this investigation was initiated to examine the morphology and length measurements of paramyxovirus RNA's.Sendai virus Z strain and Newcastle disease virus (NDV), Milano strain, were used. For these studies it was necessary to develop a method of extracting RNA molecules from purified virus particles. Highly purified Sendai virus was treated with pronase (300 μg/ml) at 37°C for 30 minutes and the RNA extracted by the sodium dodecyl sulfate (SDS)-phenol procedure.

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Nucleic Acid Molecules Prepared by Monolayer Techniques

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100094140 ◽

1972 ◽

Vol 30 ◽

pp. 178-179

Author(s):

Dimitrij Lang

Keyword(s):

Electron Microscopy ◽

Standard Deviation ◽

Nucleic Acid ◽

Cytochrome C ◽

Nucleic Acids ◽

Contour Length ◽

Sample Standard Deviation ◽

Molecular Weights ◽

Length Measurements ◽

Protein Monolayer

The success of the protein monolayer technique for electron microscopy of individual DNA molecules is based on the prevention of aggregation and orientation of the molecules during drying on specimen grids. DNA adsorbs first to a surface-denatured, insoluble cytochrome c monolayer which is then transferred to grids, without major distortion, by touching. Fig. 1 shows three basic procedures which, modified or not, permit the study of various important properties of nucleic acids, either in concert with other methods or exclusively:1) Molecular weights relative to DNA standards as well as number distributions of molecular weights can be obtained from contour length measurements with a sample standard deviation between 1 and 4%.

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Sonographic longitudinal cervical length measurements in nulliparous women at term; prediction of spontaneous onset of labour

Zeitschrift für Geburtshilfe und Neonatologie ◽

10.1055/s-2007-1002958 ◽

2007 ◽

Vol 211 (S 2) ◽

Author(s):

M Meijer-Hoogeveen ◽

C Van Holsbeke ◽

I van der Tweel ◽

P Stoutenbeek ◽

GHA Visser

Keyword(s):

Cervical Length ◽

Term Prediction ◽

Nulliparous Women ◽

Length Measurements ◽

Spontaneous Onset

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Prospects of development of the reference base of the Russian Federation in the field of length measurements

Izmeritel`naya Tekhnika ◽

10.32446/0368-1025it.2020-2-3-5 ◽

2020 ◽

pp. 3-5

Author(s):

Y. G. Zakharenko ◽

N. A. Kononova ◽

V. L. Fedorin ◽

Z. V. Fomkina ◽

K. V. Chekirda

Keyword(s):

High Precision ◽

Russian Federation ◽

Reference Base ◽

Length Measurements ◽

Laser Sources ◽

The Russian Federation ◽

Unit Of Length ◽

Further Development ◽

532 Nm

The results of the work to create a complex of high-precision hardware for the unit of length reproduction and transferring carried out at “D. I. Mendeleyev Institute for Metrology (VNIIM)” are represented. This complex will serve as the basis for the further development of the reference base of the Russian Federation in the field of length measurements and will allow reproduction of the unit of length at two wavelengths of 633 nm and 532 nm, as well as measurements of the wavelength of laser sources in vacuum in the range from 500 to 1050 nm.

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