132 Result(s)

Article

Untersuchung von Textilien und Textilrohstoffen

N. Ahmad, C. Nanjundayya, W. G. Chace, M. A. Ssobolew… in Zeitschrift für analytische Chemie (1938)

Chapter

Optical Rotatory Dispersion, Circular Dichroism, and the Pfeiffer Effect in Coordination Compounds

During the past decade there has been a considerable resurgence of interest in the optical rotatory dispersion and circular dichroism of coordination compounds.¹ In addition, there also has been a considerable re...

S. Kirschner, N. Ahmad in Coordination Chemistry (1969)

Article

Polar wandering path for India during the Precambrian

The recent radiometric dating on some Precambrian formations of India and the available paleomagnetic data have enhanced the possibility of deducing the Polar wander path for India during the remote past. The ...

Iqbal Hasnain, N. Ahmad, Rafi Ahmad in pure and applied geophysics (1973)

Article

Methods of measuring available nutrients in West Indian soils

Total K, exchangeable K (NH₄OAc method), CH₃COOH, cold H₂SO₄ and boiling HNO₃ extractable K were compared with dry matter yield response and K uptake from maize grown on 155 Commonwealth Caribbean soils in greenh...

N. Ahmad, I. S. Cornforth, D. Walmsley in Plant and Soil (1973)

Article

Taxonomic and ecological aspects of the distribution of glycinebetaine and related compounds in plants

The concentrations of the major inorganic ions and glycinebetaine, choline and proline and the osmotic pressure of extract sap have been determined in eight salt marsh species and four sand dune species from l...

R. Storey, N. Ahmad, R. G. Wyn Jones in Oecologia (1977)

Article

Isolation of di-N-2-propylpentyl phthalate from human urine

A higher percentage of di-N-2 propylpentyl phthalate isolated from the urine of the normals and a lower quantity in the patients suffering from Eales' disease accompanied with the occurrence in patients of ano...

N. Ahmad, S. A. Ahmad, A. A. Khan, A. Shoeb in Experientia (1979)

Article

Comparative disappearance of fonofos, phorate and terbufos soil residues under similar South Dakota Field conditions

N. Ahmad, D. D. Walgenbach, G. R. Sutter in Bulletin of Environmental Contamination an… (1979)

Article

Degradation rates of technical carbofuran and a granular formulation in four soils with known insecticide use history

N. Ahmad, D. D. Walgenbach, G. R. Sutter in Bulletin of Environmental Contamination an… (1979)

Article

Selective spectrophotometric determination of uranium(VI) using salicylaldimine antipyrine

S. A. Nabi, A. R. Siddiqi, M. Athar… in Fresenius' Zeitschrift für analytische Che… (1981)

Chapter

Report of the work group on sugarcane

We have considered the major aspects of N-cycling in sugarcane crops of Latin America. A general nitrogen balance for this crop is difficult to construct because of widely differing agronomic practices and gro...

A. P. Ruschel, F. R. Tamas, N. Ahmad… in Nitrogen Cycling in Ecosystems of Latin Am… (1982)

Chapter

Crop utilization and fixation of added ammonium in soils of the West Indies

NH₄ ⁺-fixation by inorganic and organic soil components and crop utilization of fertilizer nitrogen was studied in a number of Caribbean soils using ¹⁵N fertilizers.

N. Ahmad, E. D. Reid, M. Nkrumah… in Nitrogen Cycling in Ecosystems of Latin Am… (1982)

Article

Report of the work group on sugarcane

A. P. Ruschel, F. R. Tamas, N. Ahmad, H. H. Mendoza-Palacios… in Plant and Soil (1982)

Article

Crop utilization and fixation of added ammonium in soils of the West Indies

NH₄ ⁺-fixation by inorganic and organic soil components and crop utilization of fertilier nitrogen was studied in a number of Carbbean soils using¹⁵N fertilizers.

N. Ahmad, E. D. Reid, M. Nkrumah, S. M. Griffith, L. Gabriel in Plant and Soil (1982)

Article

Micellization of styrene/butadiene/styrene block copolymers in mixed solvents

Dilute solutions of three block copolymers, styrene/butadiene/styrene in the mixed selective solvents dioxane/different alcohols is studied at different temperatures. The molecular weight, second virial coeffi...

N. Ahmad, M. Kaleem, S. Noor in Colloid and Polymer Science (1983)

Article

Effect of soil acidity and saturating cation on adsorption of urea in soil

Elevating the pH of two extremely acid tropical soils from an initial pH of 4 to 5 with Ca(OH)₂ and NaOH solutions resulted in a sharp decrease in urea adsorption. Further increases in pH to 9 caused only slight ...

M. Subba Rao, N. Ahmad in Plant and Soil (1984)

Article

Evaluation of brodifacoum against house murids of Garhwal Himalaya (India)

Brodifacoum (WBA 8119) was tested at various concentrations (0·02, 0·01, 0·005, 0·0025 and 0·00125%) by choice tests in laboratory against house murids vizRattus rattus gangutrianus Hinton andMus musculus Linnaeu...

C Sheikher, N Ahmad, S S Guraya in Proceedings: Animal Sciences (1987)

Article

Lysimeter and field studies on¹⁵N in a tropical soil

Twenty four plots, each 2.0 m² in area, were established on St. Augustine loam soil series as field plots and microplots (containing lysimeters) in a completely randomised block design of four treatments (mulched...

M. Nkrumah, S. M. Griffith, N. Ahmad, F. A. Gumbs in Plant and Soil (1989)

Article

Lysimeter and field studies on¹⁵N in a tropical soil

Field plots and lysimeter (micro) plots were established on St. Augustine loam in a completely randomised block design with four fertilized, mulched and unmulched treatments, replicated three times. Labelled (¹⁵N...

M. Nkrumah, S. M. Griffith, N. Ahmad in Plant and Soil (1989)

Article

Organochlorine insecticide residues in fish and birds from three river systems on the North Coast Region of New South Wales

K. W. McDougall, N. Ahmad, C. R. Harris… in Bulletin of Environmental Contamination an… (1989)