Ultrasonic Rheology of Mixed-Phase Systems

2011 ◽  
pp. 145-174 ◽  
Author(s):  
Thomas J. Lane
Keyword(s):  
Mixed Phase ◽  
Phase Systems

scholarly journals A Study on the Emergence of P-Type Behaviour in Sr-Cu-O Mixed Phase Systems

2019 ◽  
Vol 1172 ◽  
pp. 012008
Author(s):  
Arathy Mariya Thomas ◽  
Shifa Salam ◽  
M C Santhoshkumar ◽  
Sebin Devasia ◽  
E.I. Anila
Keyword(s):  
Mixed Phase ◽  
Phase Systems ◽  
P Type

Gas Chromatographic Resolution of Organochlorine Insecticides on Mixed Phase Systems. II. OV-1/OV-25, OV-210/OV-25, and OV-225/OV-25 Systems

1976 ◽  
Vol 59 (5) ◽  
pp. 1180-1183
Author(s):  
Yasuhiro Yamato ◽  
Manabu Suzuki ◽  
Tadao Watanabe
Keyword(s):  
Mixed Phase ◽  
Heptachlor Epoxide ◽  
Organochlorine Insecticides ◽  
Chromatographic Resolution ◽  
Phase Systems ◽  
Related Compounds ◽  
Phase Column

Abstract The resolution of organochlorine insecticides and related compounds on OV-1/OV-25, OV-210/OV-25, and OV-225/OV-25 mixed phase column systems was investigated. α-BHC, β-BHC, and γ-BHC (lindane) were resolved on the 0.5% OV-210/2% OV-25 system; α-BHC, β-BHC, and γ-BHC were separated on the 0.5% OV-225/2% OV-25 or 1% OV-1/2% OV-25 system. Heptachlor, heptachlor epoxide, aldrin, and endrin were resolved on the 0.5% OV-1/2% OV-25 system. Dieldrin was separated on the 5% OV-210/2% OV-25 or 5% OV-225/2% OV-25 system. DDT and its related compounds except p,p′-DDE and o,p′-DDE were resolved on the 5% OV-210/2% OV-25 or 0.5% OV-225/2% OV-25 system.

Gas Chromatographic Resolution of Organochlorine Insecticides on OV-l/OV-17, OV-210/OV-17, and OV-225/OV-17 Mixed Phase Systems

1975 ◽  
Vol 58 (2) ◽  
pp. 297-300
Author(s):  
Manabu Suzuki ◽  
Yasuhiro Yamato ◽  
Tadao Watanabe
Keyword(s):  
Mixed Phase ◽  
Heptachlor Epoxide ◽  
Organochlorine Insecticides ◽  
Chromatographic Resolution ◽  
Phase Systems ◽  
Related Compounds ◽  
Phase Column

Abstract The resolution of organochlorine insecticides and their related compounds on OV-l/OV-17, OV-210/OV-17, and OV-225/OV-17 mixed phase column systems was investigated. Four BHC isomers and p,p'-DDT, its isomer, and their metabolites (except p,p'-DDE and o,p'-DDE) were resolved on the OV-210/OV-17 system. Heptachlor and heptachlor epoxide were separated on 5% OV-1/2% OV-17 or 5% OV-225/2% OV-17. Resolution of aldrin, dieldrin, and endrin was obtained on 5% OV-210/2% OV-17. p,p'-DDE and o,p'-DDE could not be separated by any of the systems studied.

scholarly journals High temperature/pressure MAS-NMR for the study of dynamic processes in mixed phase systems

2019 ◽  
Vol 56 ◽  
pp. 37-44 ◽  
Author(s):  
Ali Chamas ◽  
Long Qi ◽  
Hardeep S. Mehta ◽  
Jesse A. Sears ◽  
Susannah L. Scott ◽  
...  
Keyword(s):  
High Temperature ◽  
Mas Nmr ◽  
Mixed Phase ◽  
Dynamic Processes ◽  
Phase Systems

Quantitative nano-characterization of heterogeneous catalysts

1995 ◽  
Vol 53 ◽  
pp. 398-399
Author(s):  
P.A. Crozier ◽  
M. Pan
Keyword(s):  
Heterogeneous Catalysts ◽  
Low Dose ◽  
Imaging Techniques ◽  
Structural Features ◽  
Catalyst Characterization ◽  
New Developments ◽  
Double Phase ◽  
Phase Systems ◽  
Dose Imaging

Heterogeneous catalysts can be of varying complexity ranging from single or double phase systems to complicated mixtures of metals and oxides with additives to help promote chemical reactions, extend the life of the catalysts, prevent poisoning etc. Although catalysis occurs on the surface of most systems, detailed descriptions of the microstructure and chemistry of catalysts can be helpful for developing an understanding of the mechanism by which a catalyst facilitates a reaction. Recent years have seen continued development and improvement of various TEM, STEM and AEM techniques for yielding information on the structure and chemistry of catalysts on the nanometer scale. Here we review some quantitative approaches to catalyst characterization that have resulted from new developments in instrumentation.HREM has been used to examine structural features of catalysts often by employing profile imaging techniques to study atomic details on the surface. Digital recording techniques employing slow-scan CCD cameras have facilitated the use of low-dose imaging in zeolite structure analysis and electron crystallography. Fig. la shows a low-dose image from SSZ-33 zeolite revealing the presence of a stacking fault.

CONTRACEPTION BY AN INJECTABLE LONG-ACTING OESTROGEN-PROGESTOGEN AGENT. III

1972 ◽  
Vol 69 (1) ◽  
pp. 67-76
Author(s):  
Rolf Plesner
Keyword(s):  
Treatment Period ◽  
Treatment Cycle ◽  
Post Treatment ◽  
Mixed Phase ◽  
Discontinuation Of Treatment ◽  
Phase Type ◽  
Secretory Type ◽  
Pre Treatment ◽  
Long Acting ◽  
Fertile Women

ABSTRACT Twenty-two fertile women were treated cyclically in from 4–30 cycles (mean 15.5) with a total of 341 injections of Deladroxate®, an injectable, long-acting oestrogen-progestogen. The injections were administered on the 8th (7th–9th) day of each cycle. Before treatment, the last pre-treatment cycle was controlled by means of daily recordings of the basal body temperature (BBT), urinary excretion of pregnanediol and total pituitary gonadotrophins at certain intervals, and by endometrial biopsies obtained late in the cycle. The effects of Deladroxate® on ovulation, on pituitary gonadotrophic function, and on the endometrium were controlled by the above mentioned parameters during cycles 1, 3, and 6, and all assessments were repeated after discontinuation of treatment. During treatment, there was a statistically significant fall in gonadotrophin excretion values (as compared with the pre-treatment values), and the fall was found to be gradually progressive during treatment. After discontinuation of treatment, there seemed to be a tendency towards an increase in the excretion values. Suppression of ovulation as determined by means of the pregnanediol excretion during treatment, was effective in nearly all of the treatment cycles checked. The fall in pregnanediol excretion was also gradually progressive during treatment, while there was a slight increase in excretion values in the post-treatment period. During treatment, 79 BBT curves were recorded. Nearly 50 % were monophasic, indicating anovulatory cycles, 17 curves were biphasic, but with the rise in temperature occurring at non-characteristic times in the cycles, 18 curves were classified as thermogenic because of a rise in temperature occurring within 24 hours after the injection, and 5 curves were not assessable. During the first month after discontinuation of treatment, 8 out of 10 recorded curves were monophasic. Out of 53 endometrial biopsies obtained around the 23rd day of the cycle, 31 were of the mixed phase type, but showing a predominance of proliferative patterns, 15 were of the secretory type, and 7 were purely proliferative. Out of 15 biopsies obtained in the post-treatment period, only two were of the mixed phase type, 12 were proliferative and one was purely secretory.

Kinetics of Light-Induced Effects in Mixed-Phase Hydrogenated Silicon Solar Cells

2003 ◽  
Vol 762 ◽  
Author(s):  
Guozhen Yuea ◽  
Baojie Yan ◽  
Jeffrey Yang ◽  
Kenneth Lord ◽  
Subhendu Guha
Keyword(s):  
Solar Cells ◽  
Fill Factor ◽  
Equivalent Circuit Model ◽  
Open Circuit ◽  
Mixed Phase ◽  
Silicon Solar Cells ◽  
Initial Increase ◽  
Soaking Time ◽  
Hydrogenated Silicon ◽  
Kinetics Of

AbstractWe have observed a significant light-induced increase in the open-circuit voltage (Voc) of mixed-phase hydrogenated silicon solar cells. In this study, we investigate the kinetics of the light-induced effects. The results show that the cells with different initial Voc have different kinetic behavior. For the cells with a low initial Voc (less than 0.8 V), the increase in Voc is slow and does not saturate for light-soaking time of up to 16 hours. For the cells with medium initial Voc (0.8 ∼ 0.95 V), the Voc increases rapidly and then saturates. Cells with high initial Voc (0.95 ∼ 0.98 V) show an initial increase in Voc, followed bya Voc decrease. All light-soaked cells exhibit a degradation in fill factor. The temperature dependence of the kinetics shows that light soaking at high temperatures causes Voc increase to saturate faster than at low temperatures. The observed results can be explained by our recently proposed two-diode equivalent-circuit model for mixed-phase solar cells.

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