Combination and optimization of the cyclic NAA modes at the Dalat research reactor for determination of selenium in biological materials using 77mSe

2016 ◽  
Vol 309 (1) ◽  
pp. 185-188 ◽  
Author(s):  
Van Doanh Ho ◽  
Manh Dung Ho ◽  
Quang Thien Tran ◽  
Thi Sy Nguyen ◽  
Nhi Dien Nguyen
Keyword(s):  
Research Reactor ◽  
Biological Materials ◽  
Dalat Research Reactor

Determination of elemental concentrations in biological and geological samples using PGNAA facility at the Dalat research reactor

2019 ◽  
Vol 319 (3) ◽  
pp. 1165-1171
Author(s):  
Nguyen Canh Hai ◽  
Nguyen Nhi Dien ◽  
Vuong Huu Tan ◽  
Tran Tuan Anh ◽  
Pham Ngoc Son ◽  
...  
Keyword(s):  
Research Reactor ◽  
Geological Samples ◽  
Elemental Concentrations ◽  
Dalat Research Reactor

Enhanced information from biological materials through technological improvements in cryo-electron microscopy

1992 ◽  
Vol 50 (1) ◽  
pp. 788-789
Author(s):  
Marc J.C. de Jong ◽  
Wim M. Busing ◽  
Max T. Otten
Keyword(s):  
Electron Microscopy ◽  
Electron Beam ◽  
Biological Materials ◽  
Electron Crystallography ◽  
Cryo Electron Microscopy ◽  
Transmission Electron ◽  
The Many ◽  
Technological Improvements ◽  
Beam Damage

Biological materials damage rapidly in the electron beam, limiting the amount of information that can be obtained in the transmission electron microscope. The discovery that observation at cryo temperatures strongly reduces beam damage (in addition to making it unnecessaiy to use chemical fixatives, dehydration agents and stains, which introduce artefacts) has given an important step forward to preserving the ‘live’ situation and makes it possible to study the relation between function, chemical composition and morphology.Among the many cryo-applications, the most challenging is perhaps the determination of the atomic structure. Henderson and co-workers were able to determine the structure of the purple membrane by electron crystallography, providing an understanding of the membrane's working as a proton pump. As far as understood at present, the main stumbling block in achieving high resolution appears to be a random movement of atoms or molecules in the specimen within a fraction of a second after exposure to the electron beam, which destroys the highest-resolution detail sought.

Separation and determination of Cd in biological materials by continuous-flow fluid extraction coupled to flow-injection ICP-AES

1995 ◽  
Vol 351 (8) ◽  
pp. 802-804 ◽  
Author(s):  
E. Vereda Alonso ◽  
M. T. Siles Cordero ◽  
A. Garc�a de Torres ◽  
J. M. Cano Pav�n
Keyword(s):  
Flow Injection ◽  
Continuous Flow ◽  
Biological Materials ◽  
Fluid Extraction

Spectrometric determination of trace boron in biological materials after alkali fusion decomposition

1984 ◽  
Vol 56 (4) ◽  
pp. 839-842 ◽  
Author(s):  
Kazuo. Yoshino ◽  
Makoto. Okamoto ◽  
Hidetake. Kakihana ◽  
Takabumi. Nakanishi ◽  
Masamitsu. Ichihashi ◽  
...  
Keyword(s):  
Biological Materials ◽  
Alkali Fusion
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