Olivine and dolomite addition with some formulations clearly retarded the water absorption change in both bark (Type 1 boards) cone 2 based experimental panels. However, lowest value of 15.20% was found contain (40:60, dolomite-bark chip, w/w, %) sample which show approximately 169.6% lower than olivine at similar proportions. it is important to note that Type boards considerably conditions. Th...

We investigated the extent of osmotic adjustment and changes in transpiration rate that occur in response to repeated cycles of water deficit stress in 6-year-old Thuja occidentalis L. (eastern white cedar) trees. Groups of trees were water-stress conditioned by repeated exposure to predetermined thresholds of nonlethal water stress by withholding water until the predawn water potential fell to...

Abstract: The aim of this study was to analyze the regenerative capacity Eugenia involucrata seeds as a possible strategy ensure production new seedlings when they are going through period water deficit. Progressive deficit conditions over time (up 60 days for and 270 seedlings) in intensity -5 MPa -10 were simulated, seedling regeneration analyzed. results showed that these can survive even un...

The effect of bacterial secretion of an exopolysaccharide (EPS) on rhizosphere soil physical properties was investigated by inoculating strain NAS206, which was isolated from the rhizosphere of wheat (Triticum durum L.) growing in a Moroccan vertisol and was identified as Pantoea aglomerans. Phenotypic identification of this strain with the Biotype-100 system was confirmed by amplified ribosoma...

Chandler walnut (Juglans regia cv Chandler) on Northern California Black (Juglans hindsii) and Paradox (Juglans hindsii x Juglans regia) rootstocks were irrigated to achieve two levels of regulated deficit irrigation (RDI) in 2002 thru 2005. The RDI strategy was to maintain high midday stem water potential (MSWP) early in the growing season to favor shoot growth and nut size then gradually decr...

In this work, we characterised the thermophysical parameters of Thicky laterite as a function water content and also cement in mix. For with diameter less than or equal to 1.25 mm, thermal conductivity is 0.388 W/m.K for close 0%, increases 87.37% 3.46%. Laterite without has strength 2.309 MPa, by 4.80 %, 13.16 18.45 % 47.82 respectively when 4 6 8 10 added laterite. The flexural changes mix, f...

This paper reports the preparation of sulphur polymer cements (SPCs) incorporating waste ilmenite mud for use in concrete construction works. The ilmenite mud raw material and the mud-containing SPCs (IMC-SPCs) were characterised physico-chemically and radiologically. The optimal IMC-SPC mixture had a sulphur/mud ratio (w/w) of 1.05 (mud dose 20 wt%); this cement showed the greatest compressive...

The acoustic fields of a high intensity focused ultrasound (HIFU) transducer operating either at its fundamental (1.1 MHz) or third harmonic (3.3 MHz) frequency were measured by a fiber optic probe hydrophone (FOPH). At 1.1 MHz when the electric power applied to the transducer was increased from 1.6 to 125 W, the peak positive/negative pressures at the focus were measured to be p(+) = 1.7-23.3 ...

Previous work on the growth biophysics of maize (Zea mays L.) primary roots suggested that cell walls in the apical 5 mm of the elongation zone increased their yielding ability as an adaptive response to low turgor and water potential (psi w). To test this hypothesis more directly, we measured the acid-induced extension of isolated walls from roots grown at high (-0.03 MPa) or low (-1.6 MPa) p...

Vulnerability to xylem embolism by freeze-thaw cycles and water stress was quantified in ring-porous (Quercus gambelii Nutt.), diffuse-porous (Populus tremuloides Michx., Betula occidentalis Hook.), and conifer species (Abies lasiocarpa Nutt., Juniperus scopulorum Sarg.). Embolism was measured by its reduction of xylem hydraulic conductivity; it was induced by xylem tension (water-stress respon...