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1. Evidence for a Transcarboxylase Reaction in Maize Chloroplast Extracts

Author:
Tan, Kim H.,   et al.   ; Pan, David;     Show all 2 Author
Source:
Zeitschrift für Naturforschung 2014 v.36 no.7-8 pp. 688-691
ISSN:
1865-7125
Subject:
NAD (coenzyme); chloroplasts; corn; magnesium; malates; pH; pentoses; phosphates; thermal stability
Abstract:
... The authors have suggested (Can. J. Bot. 49, 631 (1971) that the — COOH group of the C4-P carbonyl compound of the thermostable P-enolpyruvate acid carboxylase reaction may transcarboxylase with a pentose phosphate as ac­ ceptor. We now have considerable evidence supporting this consideration. In an assay system (0.8 ml) containing soni­ cated chloroplast extract in 0.1 m Tris-HCl, pH 6.3; and PEP ...
DOI:
10.1515/znc-1981-7-830

2. Mineralogy and Micromorphology of Soils from Volcanic Tuffs in the Humid Tropics

Author:
Tan, Kim H.,   et al.   ; Goenadi, Didiek H.;     Show all 2 Author
Source:
Soil Science Society of America journal 1989 v.53 no.6 pp. 1907-1911
ISSN:
0361-5995
Subject:
A horizons; B horizons; Hapludults; Paleudults; argillic horizons; cation exchange capacity; clay; clay fraction; fabrics; humid tropics; kaolinite; microstructure; sand; silt; Indonesia
Abstract:
... An investigation was conducted to study mineralogy, chemical characteristics, and micromorphology of three pedons from andesito-dacitic volcanic tuffs in Banten, West Java, Indonesia. The soils were strongly acid, had clayey textures, argillic horizons, and base saturations <35% in the control sections. The clay distribution suggested two of the soils to be Hapludults whereas the third was a Paleu ...
DOI:
10.2136/sssaj1989.03615995005300060049x

3. Micromorphology and Mineralogy of Illuviated Clay in a Davidson Soil

Author:
Tan, Kim H.,   et al.   ; Goenadi, Didiek H.;     Show all 2 Author
Source:
Soil Science Society of America journal 1989 v.53 no.3 pp. 967-971
ISSN:
0361-5995
Subject:
A horizons; Paleudults; X-ray diffraction; argillic horizons; clay; fabrics; feldspar; illuviation; iron oxides; kaolinite; leaching; microstructure; piedmont; saprolite; soil fabric; weathering
Abstract:
... Clay illuviation was studied in a highly weathered soil of the Southern Piedmont by macro- and micromorphological techniques. Five pedons of a Davidson soil (Rhodic Paleudult) were sampled from four counties for preparation of thin sections and analysis of soil matrix, illuviated clay and argillans. The related distribution pattern of the soil fabric in the epipedon was different than that in the ...
DOI:
10.2136/sssaj1989.03615995005300030056x

4. High pH Treatments and the Alleviation of Soil Hydrophobicity on Golf Greens

Author:
Tan, Kim H.,   et al.   ; Karnok, Keith A.; Rowland, Everett J.;     Show all 3 Authors
Source:
Agronomy journal 1993 v.85 no.5 pp. 983-986
ISSN:
0002-1962
Subject:
Agrostis stolonifera var. palustris; hydrophobicity; soil pH; humic acids; fulvic acids; soil treatment; phytotoxicity; abiotic stress; air temperature; wettability; athletic fields; Georgia
Abstract:
... Hydrophobic soil associated with localized dry spots (LDS) on creeping bentgrass (Agrostic palustris Huds.) putting greens has been shown to be caused by a humic and/or fulvic acid coating of the sand particles. Under laboratory conditions, humic acid begins to solubilize at pH 7.0 and is completely soluble at pH 9.5 or greater. The purpose of this study was to determine the potential of high pH t ...
DOI:
10.2134/agronj1993.00021962008500050004x