Bioinspired Heterogeneous Ion Pump Membranes: Unidirectional Selective Pumping and Controllable Gating Properties Stemming from Asymmetric Ionic Group Distribution

Quantitative studies of the phenomenon associated with reactions induced by the electron beam between specimens and gases present in the electron microscope require precise knowledge and control of the local environment experienced by the portion of the specimen in the electron beam. Because of outgassing phenomena, the environment at the irradiated portion of the specimen is very different from that in any place where gas pressures and compositions can be measured. We have found that differential pumping of the specimen chamber by a 4" Orb-Ion pump, following roughing by a zeolite sorption pump, can produce a specimen-chamber pressure 100- to 1000-fold less than that in the region below the objective lens.

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Zero-loss omega-filtered REM and RHEED on the new Zeiss 912

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100087392 ◽

1991 ◽

Vol 49 ◽

pp. 616-617

Author(s):

J.C.H. Spence ◽

J. Mayer

Keyword(s):

Electron Microscopy ◽

Materials Science ◽

Surface States ◽

Ccd Camera ◽

Dark Field ◽

Ion Pump ◽

Magnetic Imaging ◽

Reflection Electron Microscopy ◽

Diffraction Patterns ◽

Large Background

The Zeiss 912 is a new fully digital, side-entry, 120 Kv TEM/STEM instrument for materials science, fitted with an omega magnetic imaging energy filter. Pumping is by turbopump and ion pump. The magnetic imaging filter allows energy-filtered images or diffraction patterns to be recorded without scanning using efficient parallel (area) detection. The energy loss intensity distribution may also be displayed on the screen, and recorded by scanning it over the PMT supplied. If a CCD camera is fitted and suitable new software developed, “parallel ELS” recording results. For large fields of view, filtered images can be recorded much more efficiently than by Scanning Reflection Electron Microscopy, and the large background of inelastic scattering removed. We have therefore evaluated the 912 for REM and RHEED applications. Causes of streaking and resonance in RHEED patterns are being studied, and a more quantitative analysis of CBRED patterns may be possible. Dark field band-gap REM imaging of surface states may also be possible.

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Interrelations of Thrombo-Embolic Diseases and Blood-Group Distribution

Thrombosis and Haemostasis ◽

10.1055/s-0038-1654999 ◽

1963 ◽

Vol 09 (02) ◽

pp. 472-474 ◽

Cited By ~ 12

Author(s):

W Dick ◽

W Schneider ◽

K Brockmüller ◽

W Mayer

Keyword(s):

Normal Distribution ◽

Blood Group ◽

Blood Groups ◽

The Other ◽

Other Hand ◽

Group Distribution

SummaryA comparison between the repartition of the blood groups in 461 patients suffering from thromboembolic disorders and the normal distribution has shown a statistically ascertained predominance of the group A1. On the other hand the blood groups 0 and A2 are distinctly less frequent than in the normal distribution.

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ABO and Rhesus (D) Blood Group Distribution among Blood Donors in Rural South Haryana (Mewat-Region): A 5 Years Retrospective Study

Annals of International medical and Dental Research ◽

10.21276/aimdr.2018.4.3.pt7 ◽

2018 ◽

Vol 4 (3) ◽

Author(s):

Sudheer Singh ◽

Shailesh Kumar Mishra ◽

Shivani Kalhan ◽

Puja Sharma ◽

Rahul N Satarkar ◽

...

Keyword(s):

Retrospective Study ◽

Blood Group ◽

Blood Donors ◽

Rural South ◽

Group Distribution

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Bootstrap and Order Statistics for Quantifying Thermal-Hydraulic Code Uncertainties in the Estimation of Safety Margins

Science and Technology of Nuclear Installations ◽

10.1155/2008/340164 ◽

2008 ◽

Vol 2008 ◽

pp. 1-9 ◽

Cited By ~ 14

Author(s):

Enrico Zio ◽

Francesco Di Maio

Keyword(s):

Confidence Interval ◽

Order Statistics ◽

Nuclear Reactor ◽

Safety Margin ◽

Fuel Cladding ◽

Complete Group ◽

Bootstrap Technique ◽

Safety Margins ◽

Group Distribution

In the present work, the uncertainties affecting the safety margins estimated from thermal-hydraulic code calculations are captured quantitatively by resorting to the order statistics and the bootstrap technique. The proposed framework of analysis is applied to the estimation of the safety margin, with its confidence interval, of the maximum fuel cladding temperature reached during a complete group distribution blockage scenario in a RBMK-1500 nuclear reactor.

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