Search
Now showing items 1-10 of 14
Application of a sequential partial extraction procedure to investigate uranium, copper, zinc, iron and manganese partitioning in recent lake, stream and bog sediments, northern Saskatchewan / by Douglas Andrew Warren Lehto. --
(1981)
Sequential partial extractions show that partitioning of uranium,
copper, zinc, iron and manganese into lake, stream and bog sediments
are affected by the type and abundance of component fractions present
in sediments ...
Thermodynamic studies of the sorption of ammonia on natural and modified chrysotile asbestos
(1981)
The sorption of ammonia was studied at 273 and 298 K
on Californian and Quebec chrysotile heat-treated at 150,
300, 500 and 700 degrees C. Another ammonia sorption study involving
the two chrysotiles treated at 500 ...
Post logging succession and vegetation management with hexazinone herbicide in Picea glauca (Moench) Voss-Populus tremuloides Michx. forest
(1981)
The objectives were: to review the successional behaviour of
white spruce (Picea glauca (Moench) Voss) - trembling aspen (Populus
tremuloides Michxt) stands in the literature, to conduct field studies
of the successional ...
Characterization, distribution and pathogenicity of bacteria isolated from chlorotic white spruce (Picea glauca (Moench) Voss)
(1981)
Several genera of bacteria were isolated from the foliage,
twigs, bark and wood of stems of chlorotic 10 - 12 years old white
spruce (Picea glauca (Moench) Voss).
Most of the isolates were nonspore-forming, aerobic ...
Synthetic studies on chaksine
(1981)
This thesis is concerned with the studies in the synthesis of a monoterpenoid alkaloid, chaksine.
Ethyl 2-n~butyl-4-bromoacetoacetate (11) was treated with sodium azide to give ethyl 2-n-butyl-4-azidoacetoacetate (12), ...
Crown dynamics in Pinus resinosa Ait. : analysis and stochastic description of branch production, branch extension growth and foliage dry weight---branch length relationships
(1981)
The development of the crown structure of Pinus
resinosa Ait. was analysed in terms of three component
processes of tree growth: the number of first order
branches per whorl within the crown, the annual extension
increments ...
Reactions of Co(II) with sodium cyanotrihydroborate in the presence of a series of bidentate and some monodentate phosphines
(1981)
The reactions between Co(C10[subscript4])[subscript2].6H[subscript2]O or
CoCl[subscript2].6H[subscript2]O, NaBH[subscript3]CN and some monodentate (PPh[subscript3] and Pcy[subscript3]) and a series of bidentate phosphines ...
Photosynthetic efficiency of frozen-stored Picea glauca seedlings in relation to root pruning, root growth, and shoot moisture stress / by S. J. Colombo. --
(1981)
This study examines the influence of duration of frozen
storage (-2 C) and root pruning on photosynthetic efficiency,
shoot moisture stress and root growth of white spruce (Picea
glauca (Moench) Voss) seedlings planted ...
Bidentate phosphine complexes of copper (I) : their syntheses and interactions with sodium tetrahydroborate and sodium cyanotrihydroborate
(1981)
Copper(l) chloride and perchlorate complexes of the
types (L~L)CuCl, (L-L)[subscript 3]Cu[subscript2]X[subscript2] (X=Cl-,C10-4), C(L-L)[subscript2]Cu]C10[subscript4] (L-L=DPPM, DPPE, trans VPP, cis VPP, DPPP, DPPB,DPPPe,DPPH) ...