In situ technique for monitoring the gelation of UV curable polymers

1992 ◽  
Vol 31 (2) ◽  
pp. 151-160 ◽  
Author(s):  
S. A. Khan ◽  
I. M. Plitz ◽  
R. A. Frantz
Keyword(s):  
Uv Curable ◽  
In Situ Technique

Investigation of the Intestinal Permeability of Ciclosporin Using the in situ Technique in Rats and the Relevance of P-Glycoprotein

2011 ◽  
Vol 58 (04) ◽  
pp. 188-192
Author(s):  
Parvin Zakeri-Milani ◽  
Hadi Valizadeh ◽  
Ziba Islambulchilar ◽  
Sanaz Damani ◽  
Maryam Mehtari
Keyword(s):  
Intestinal Permeability ◽  
P Glycoprotein ◽  
In Situ Technique

Use of the in situ technique in the study of degradation of lucerne and smooth bromegrass genotypes

1988 ◽  
Vol 43 (3) ◽  
pp. 231-238 ◽  
Author(s):  
G. W. MATHISON ◽  
H. G. JAHN ◽  
P. D. WALTON ◽  
L. P. MILLIGAN
Keyword(s):  
Smooth Bromegrass ◽  
In Situ Technique

scholarly journals X-Ray Single Crystal Structural Analysis of Magnetically Oriented Microcrystals

2014 ◽  
Vol 70 (a1) ◽  
pp. C1138-C1138
Author(s):  
Chiaki Tsuboi ◽  
Kazuki Aburaya ◽  
Shingo Higuchi ◽  
Fumiko Kimura ◽  
Masataka Maeyama ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Single Crystal ◽  
Three Dimensional ◽  
Diffraction Measurement ◽  
X Ray Diffraction ◽  
Data Set ◽  
Uv Curable ◽  
X Ray

We have developed magnetically oriented microcrystal array (MOMA) technique that enables single crystal X-ray diffraction analyses from microcrystalline powder. In this method, microcrystals suspended in a UV-curable monomer matrix are there-dimensionally aligned by special rotating magnetic field, followed by consolidation of the matrix by photopolymerization. From thus achieved MOMAs, we have been succeeded in crystal structure analysis for some substances [1, 2]. Though MOMA method is an effective technique, it has some problems as follows: in a MOMA, the alignment is deteriorated during the consolidation process. In addition, the sample microcrystals cannot be recovered from a MOMA. To overcome these problems, we performed an in-situ X-ray diffraction measurement using a three-dimensional magnetically oriented microcrystal suspension (3D MOMS) of L-alanine. An experimental setting of the in-situ X-ray measurement of MOMS is schematically shown in the figure. L-alanine microcrystal suspension was poured into a glass capillary and placed on the rotating unit equipped with a pair of neodymium magnets. Rotating X-ray chopper with 10°-slits was placed between the collimator and the suspension. By using this chopper, it was possible to expose the X-ray only when the rotating MOMS makes a specific direction with respect to the impinging X-ray. This has the same effect as the omega oscillation in conventional single crystal measurement. A total of 22 XRD images of 10° increments from 0° to 220° were obtained. The data set was processed by using conventional software to obtain three-dimensional molecular structure of L-alanine. The structure is in good agreement with that reported for the single crystal. R1 and wR2 were 6.53 and 17.4 %, respectively. RMSD value between the determined molecular structure and the reported one was 0.0045 Å. From this result, we conclude that this method can be effective and practical to be used widely for crystal structure analyses.

scholarly journals IN SITU DETERMINATIONS OF pH IN SOME LAKES

1971 ◽  
Vol 2 (3) ◽  
pp. 133-145 ◽  
Author(s):  
OLAV GRÖTERUD
Keyword(s):  
Water Samples ◽  
And Storage ◽  
In Situ Technique

pH has been determined in some lakes by using an in situ technique. pH has also been measured in the usual way in the field and in the laboratory. These measurements, together with the determinations in situ, made it possible to get information about changes of pH in the water samples during sampling, measuring, and storage. The microstratification of pH has also been investigated by means of in situ determinations.

The In-Situ Technique for Preparing Al-TiB2 and Al-Al3Ti Composites

2012 ◽  
pp. 283-289
Author(s):  
Jun Wang ◽  
Pan Li ◽  
Chong Chen ◽  
Jing Xue
Keyword(s):  
In Situ Technique

Ureterostomy in situ Technique for temporary urinary diversion

Urology ◽  
1976 ◽  
Vol 8 (5) ◽  
pp. 447-449 ◽  
Author(s):  
Milton Pokorny ◽  
J. Edson Pontes ◽  
James M. Pierce
Keyword(s):  
Urinary Diversion ◽  
In Situ Technique
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