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1.
Summary DCP increases IAA destruction by bothLens andPhaseolus root breis. H2O2 inhibits catabolism byLens extracts but activates it whenPhaseolus is used, mainly when roots are cultivated in the dark and contain inhibitors of IAA destruction. DCP 1·10–3 M and H2O2 1·10–4 or 1·10–3 volume forLens and DCP 1·10–4 M and H2O2 1·10–3 volume forPhaseolus nullify auxin catabolism.  相似文献   

2.
Summary The space-group of Cu(NH3)4SO4·H2O isD 2h 16 orD 2h 13 (D 2h 5 , D 2h 1 ) with a=7,07, b=12,12, c=10,66 Å ± 1%.  相似文献   

3.
Summary Superoxide dismutase, catalase and methional proved capable of inhibiting the microsomal oxidation of thiobenzamide, which is most probably catalyzed by the flavin-containing monooxygenase. This indicates that excited oxygen species (e. g.·O 2 , H2O2, ·OH) are involved in the catalytic cycle of this enzymatic reaction. CO, which inhibits the cytochrome P-450-dependent oxygen radical formation, had no effect on the oxidation reaction, suggesting that the source of the reactive oxygen species is not the microsomal mixed-function oxidase.  相似文献   

4.
Summary The catalytic mutation of the ions Al3+ and MoO 4 2– on the mixed carrier Cd(OH)2/Co(OH)2(Tr) is recognizable by the fact that the combination Tr+Al3++MoO 4 2– is more active in the decomposition of H2O2 than the combination Tr+MoO 4 2– +Al3+.  相似文献   

5.
Résumé La valeur deGh+Goh peut être obtenue en utilisant des solutions aqueuses de certains composés organiques contenant Cu2+ et/ou Fe3+. Les ions métalliques sont réduits par H et par les radicaux produits par l'oxydation des composés organiques par OH. A concentration convenable des réactifs, on a;G Fe 2+ =G H+G OH.  相似文献   

6.
Zusammensetzung des Borax-Puffers Stammlösung A: Borsäure H3BO3MG 61,83, 0,2M=12,3 g/l 50 Teile Stammlösung B: Natriumborat NaBO2–4 H2O, MG 137,86 0,2M=27,57 g/l 50 TeileSusammenselzung des Sörensen-Puffers Sörensen-Puffer (nachSchnedl für Bandfärbung M/15 KH2PO4/Na2HPO4 mit einem pH von 6,8). KH2PO4 MG=136,09–1/15M=20,41 g/l Na2HPO4·2H2O MG=177,99–1/15M=26,69 g/l.Der Gehalt an Methylen Violet Bernthsen in Giemsalösung ist von Bedeutung und kann durch leichtes Aufkochen aktiviert werden.
Simple chromosome banding technique for farm animal investigations
Summary For routine cytogenetic investigations, a simple banding technique on chromosomes is described. Used on different cell material, avisible banding appearance is produced which makesthe typing of chromosomes precise and fast. On 2 examples of cattle and rabbit chromosomes, the identification of a centric fusion and a trisomic is shown.
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7.
Zusammenfassung Eine neue Lignansubstanz, Arctigenin-4--gentiobiosid C33H44O16·H2O wurde als weisses Pulver von Smp. 174–176° aus Stengeln vonTrachelospermum asiaticum Nakai var.intermedium Nakai gewonnen.  相似文献   

8.
Zusammenfassung Die Zusammensetzung von in wässeriger Lösung gebildeten Ionenpaaren des Anions [W(CN)4(OH)4]4- mit Cr3+ bzw. Fe3+ wird amperometrisch ermittelt.

Acknowledgment. The authors are grateful to Dr.S. M. F. Rahman for providing necessary facilities and C.S.I.R. (India) for awarding a Junior Fellowship to one of them (K. U.).  相似文献   

9.
    
Summary Eglestonite has been investigated by powder and rotation photographs;a=8,02±0,02 Å,Z=3; the space-group is O h 9 . The Hg-atoms form Hg2-groups as in Hg2Cl2, and therefore the formula must be written Hg4Cl2O. It was not yet possible to find the positions of Cl and O, because their scattering-power is too low.  相似文献   

10.
Zusammenfassung Die Struktur von Tl2Cl3 gehört wahrscheinlich der Raumgruppe D 3d 2 an. Die hexagonale Zelle hat die Dimensionena=14·3 k X,c=25·1 k X und enthält 32 Einheiten Tl2Cl3.  相似文献   

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