One of the most important problems encountered in cultivation cut flower gladiolus is soil-borne diseases and pests. This problem substantially reduces yield quality. Soilless culture very limited for it has not been studied extensively. The characteristics growing media used soilless either directly or indirectly affect Therefore, quite essential to determine appropriate cultivation. At same t...

-The reaction of kaolin with NaC1 was followed by dynamic thermal analysis and mass spectrometry under/'42, CO2, and air atmospheres and in a 10-5-torr vacuum. The weight loss was a function of the atmosphere used and, according to mass spectrometry, was due to the evolution of H20, HC1, and very small amounts of H2. HC1 was formed only after the release of 85% of the hydroxyl content of the ka...

Emulsions are the most common form of skin care products. However, these systems may exhibit some instability. Therefore, when developing emulsions for topical application it is interesting to verify whether they have suitable physical and mechanical characteristics and further assess their stability. The aim of this work was to study the stability of emulsion systems, which varied in the propo...

This study attempted to fill epoxy, a widely used industrial material, with pumice, cheap volcanic rock, in order form composite material. The objective was evaluate the worth of pumice and improve mechanical properties epoxy. Composite samples no filler, 10%, 20%, or 30% filler were produced. An ultrasonic mixer during manufacture made sure powder dispersed properly, vacuuming stopped air pock...

In order to study the effect of R2O/Al2O3 (where R=Na or K), SiO2/Al2O3, Na2O/K2O and H2O/R2O molar ratios on the compressive strength (CS) of Metakaolin base geopolymers, more than forty data were gathered from literature. To increase the number of data, some experiments were also designed. The resulted data were utilized to train and test the three layer artificial neural network (ANN). Bayes...

OBJECTIVE To evaluate the in vitro changes on the enamel surface after a micro-abrasion treatment promoted by different products. MATERIAL AND METHODS Fifty (50) fragments of bovine enamel (15 mm × 5 mm) were randomly assigned to five groups (n=10) according to the product utilized: G1 (control)= silicone polisher (TDV), G2= 37% phosphoric acid (3M/ESPE) + pumice stone (SS White), G3= Micropo...

This study presents a discussion on the effects of different solid-to-liquid (S/L) ratios (0.97 to 1.19) and nanoSiO2 (NS) percentages (0% to 3%) on some properties of metakaolin (MK)-based geopolymers. The setting time and compressive strength were investigated. Mercury intrusion porosimetry, fourier transform infrared spectroscopy, and scanning electron microscopy were used to determine the m...

Pumice quarried by LAVA MINING AND QUARRYING SA from Yali Island, Dodecanese, is used in domestic and foreign markets mainly as concrete lightweight aggregate, masonry unit constituents, road substrate, loose soil stabilization. It a porous natural volcanic rock with low density, thermal noise transmission, the highest strength among all or artificial materials of mineral origin. Nowadays, pumi...