induction of systemic resistance to cucumber against marginal leaf blight disease caused by pseudomonas marginalis using silicon application (as 1 &2 mm of sodium silicate) was studied under greenhouse conditions. results indicated that application of 2 mm of sodium silicate remarkably increased resistance in cucumber against the pathogen. according to the results, disease severity in plants tr...

Determination of silicate concentration in seawater without addition of liquid reagents was the key prerequisite for developing an autonomous in situ electrochemical silicate sensor (Lacombe et al., 2007) [11]. The present challenge is to address the issue of calibrationless determination. To achieve such an objective, we chose chronoamperometry performed successively on planar microelectrode (...

The development of phytoplankton communities was studied in floating enclosures. The enclosures were supplied with either surface water or water from 40 m depth. Nutrients with or without silicate were added in some of the experiments, while others recieved no artificial fertilization. It is shown that diatom dominance occurred irrespective of season if silicate concentration exceeded a thresho...

We report the spectroscopic detection of silicate emission at 10 and 18μm in five PG quasars, the first detection of these two features in galaxies outside the Local Group. This finding is consistent with the unification model for Active Galactic Nuclei (AGNs), which predicts that an AGN torus seen pole-on should show a silicate emission feature in the mid-infrared. The strengths of the detecte...

BACKGROUND: Silicon is a suitable solution to alleviate salinity stress and improve crop production. OBJECTIVES: Investigation physiological and biochemical traits of Single Cross 704 corn affected foliar application of silicon (from a Sodium silicate source) under salinity stress. METHODS: This research was carried out according sp...

Yam (Dioscorea alata) is a tropical plant that considered critical for food security. The use of high fertilizer, low soil fertility, and insect pest infestation reduce yam tuber yield quality. present study was performed to determine the effect potassium silicate arbuscular mycorrhizal fungi (AMF) on cultivated under salinity stress. This revealed combination Rhizophagus irregularis Potassium ...

The high activity of metallic zinc particles with water, and consequently the short pot lift a mixed waterborne organic zinc-rich paint, are most well-known problem for their application. In this study, powders were modified by silane-crosslinked potassium silicate paint’s life was prolonged. Electron microscopy analysis showed that spheres in paint encapsulated shell consisted resin. modificat...

Recently, the demolition of old houses and the construction of new buildings in Kathmandu valley are in the peak which in turn generates a huge amount of construction waste. This construction waste is rich source of alumino-silicate and thus used as raw material for the synthesis of geopolymer in this study. Geopolymers have been synthesized from construction waste using NaOH and Na2SiO3 as act...

Silicate hydration is prevalent in natural and technological processes, such as, mineral weathering, glass alteration, zeolite syntheses and cement hydration. Tricalcium silicate (Ca3SiO5), the main constituent of Portland cement, is amongst the most reactive silicates in water. Despite its widespread industrial use, the reaction of Ca3SiO5 with water to form calcium-silicate-hydrates (C-S-H) s...

First principles calculations are employed to provide a fundamental understanding of the relationship between the reactivity of synthetic calcium silicate phases and their electronic structure. Our aim is to shed light on the wide range of hydration kinetics observed in different phases of calcium silicate. For example, while the dicalcium silicate (Ca2SiO4) phase slowly reacts with water, the ...