Institution
Czechoslovak Academy of Sciences
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About: Czechoslovak Academy of Sciences is a based out in . It is known for research contribution in the topics: Catalysis & Adsorption. The organization has 13227 authors who have published 17335 publications receiving 272882 citations.
Topics: Catalysis, Adsorption, Polymerization, Antigen, Population
Papers published on a yearly basis
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TL;DR: A review on ion-selective electrodes (ISEs) is arranged in the same way as earlier reviews of this series as mentioned in this paper, which covers the theory of membrane processes, technology, fixed-site electrodes, potentiometric biosensors and miscellaneous systems.
70 citations
TL;DR: Principal factors affecting both standing crop and production are climate, chemical inputs into the wetland, the presence of bryophytes in the ground layer, density, species life history, fire and water depth.
70 citations
TL;DR: Although significant progress in system identification has been made, many problems remain, and among them is the determination of modeling accuracy especially for non-linear, noisy systems.
70 citations
TL;DR: Hydroxylation of the phenyl ring of bzl6Ado inortho, meta, andpara positions significantly decreased cytokinin activity in four bioassays based on stimulation of growth of tobacco callus, retention of chlorophyll in excised wheat leaves, dark induction of betacyanin synthesis inAmaranthus cotyledons, and release of lateral buds of pea from apical dominance.
Abstract: Cytokinin activities ofN
6-benzyladenosine (bzl6Ado) and its derivatives hydroxylated on the side chain phenyl ring inortho, meta, andpara positions were compared in four bioassays based on stimulation of growth of tobacco callus, retention of chlorophyll in excised wheat leaves, dark induction of betacyanin synthesis inAmaranthus cotyledons, and release of lateral buds of pea from apical dominance. In all these bioassays hydroxylation of the phenyl ring of bzl6Ado inortho andpara positions significantly decreased cytokinin activity. Compared with bzl6Ado, the activity was decreased about 10× in the tobacco callus bioassay and wheat leaf chlorophyll retention test, 100× in theAmaranthus betacyanin bioassay, and 20× and 200×, respectively, in the pea bud test. Hydroxylation of the phenyl ring inmeta position increased activity in the tobacco callus, and wheat leaf chlorophyll retention bioassays, 9× and 1.7×, respectively, decreased activity about 2.4× in the pea bud test and was without effect in theAmaranthus bioassay. Cytokinin activity of themeta hydroxy derivative,N
6-(m-hydroxybenzyl) adenosine, was as high as that oftrans-zeatin in all four bioassays. Possible regulation of biological activities of cytokinins by positionally specific hydroxylation of the side chain phenyl ring is discussed with respect to the reported occurrence of natural purinyl cytokinins with aromatic side chains.
70 citations
TL;DR: In this paper, the authors studied the kinetics of the Fe3+/Fe2+ reaction on Pt and Au rotating disk electrodes in 0.5 M HClO4 solutions and found that the reaction rate is trongly affected by adsorption of traces of anionic impurities.
69 citations
Authors
Showing all 13227 results
| Name | H-index | Papers | Citations |
|---|---|---|---|
| Milos Lokajicek | 139 | 1511 | 98888 |
| Bo K. Siesjö | 113 | 469 | 46151 |
| Pavel Hobza | 107 | 564 | 48080 |
| Robin A. Weiss | 94 | 332 | 36744 |
| Frantisek Svec | 92 | 416 | 25688 |
| Stefano Schiaffino | 86 | 233 | 33691 |
| Farooq Azam | 85 | 219 | 36142 |
| Jan Vilcek | 82 | 353 | 26148 |
| David C. Klein | 80 | 343 | 24219 |
| David L. Denlinger | 78 | 338 | 19283 |
| Josef Michl | 77 | 852 | 28731 |
| Henry C. Pitot | 76 | 464 | 25024 |
| Jindřich Kopeček | 76 | 343 | 19913 |
| Lynn Nadel | 75 | 214 | 30376 |
| Petr Novák | 75 | 519 | 30962 |