Fertilization exceeding crop requirements causes an accumulation of phosphorus (P) in soils, which might increase concentrations of dissolved and colloidal P in drainage. We sampled soils classified as Typic Haplorthods from four fertilization experiments to test (i) whether increasing degrees of phosphorus saturation (DPS) increase concentrations of dissolved and colloidal P, and (ii) if criti...

We present a constant-round unconditional black-box compiler, that transforms any ideal straightline extractable commitment scheme, into an extractable and equivocal commitment scheme, therefore yielding to UC-security [Can01]. We exemplify the usefulness of our compiler providing two (constantround) instantiations of ideal straight-line extractable commitment using (malicious) PUFs [OSVW13] an...

The lipids of Bacteroides melaninogenicus were readily extractable with chloroform-methanol. Three per cent of the fatty acids were not extractable. The neutral lipids contained 4% of the extractable fatty acids, the stench characteristic of these organisms, and 0.5 mumole of vitamin K(2) isoprenologues K(2)-35, K(2)-40, and K(2)-45 per g (dry weight). This is one-fifth to one-tenth of the vita...

Thyroxine, if not truly the active thyroid hormone ( 1, 2) is clearly the principal iodine-containing compound released by the thyroid gland, and ordinarily comprises the largest fraction of the plasma's protein-bound iodine (3-6). Many investigators have, therefore, attempted to assess thyroidal function by measuring the concentration of protein-bound I'll (PB1181) in the plasma following the ...

Fiji’s agricultural sector, and within it, the sugar industry, has been the driving force behind the country’s development. The sugar industry, however, is facing a number of challenges of which production efficiency is one of them. This paper examines farm productivity, efficiency and profitability in the industry. It suggests that without improving farm level efficiency and productivity the i...

the effects of waterlogging, sewage sludge and animal manure on the concentrations of dtpa extractable copper, iron, manganese and zinc were investigated in two different types of soil. a factorial experiment based upon a completely randomized design of two replications containing duration of waterlogging at six levels (0, 1, 3, 7, 15, 30 days), source of organic fertilizer at three levels (con...

This paper compared the effectiveness of four organic materials for decreasing the amounts of soil extractable Cr(VI) in Cr(VI)-contaminated soils using the DOWEX M4195 resin-extraction method. Organic matters were added into Cr(VI)-spiked soils [500 mg Cr(VI)(kgsoil)(-1)] in the form of sugarcane dregs compost (SCDC), cattle-dung compost (CDC), soybean meal (SBM) and rice bran (RB), in the amo...

Toxicity of cadmium to Folsomia candida was determined in soils at different pHs (3.5, 5.0, and 6.5). The Langmuir sorption constant (K(L)), based on pore-water or water-extractable concentrations, showed a pH-related increase of cadmium sorption that was most pronounced when using free Cd2+ ion activities ([Cd2+]s). Two-species Langmuir isotherms that used total cadmium concentration ([Cd]) or...