Some new 2-alkyl-5-mercapto-1,3,4-Oxadiazoles and 3-alkyl-5-mercapto-1,2,3-4H triazoles were synthesized from hydrazides of acid oil and oil recovered from spent bleaching earth. These newly synthesized compounds were characterized on the basis of elemental analysis and evaluated for biological properties. Certain derivatives exhibited fairly high antibacterial and antifungal activities when co...

UNLABELLED This study evaluated color change, stability, and tooth sensitivity in patients submitted to different bleaching techniques. MATERIAL AND METHODS In this study, 48 patients were divided into five groups. A half-mouth design was conducted to compare two in-office bleaching techniques (with and without light activation): G1: 35% hydrogen peroxide (HP) (Lase Peroxide - DMC Equipments,...

UNLABELLED Light-activated tooth bleaching with a high hydrogen peroxide (HP; H2O2) concentration has risks and the actual role of the light source is doubtful. The use of conventional light might result in an increase in the temperature and cause thermal damage to the health of the tooth tissue. OBJECTIVE This study investigated the efficacy of tooth bleaching using non-thermal atmospheric p...

Abstract This essay considers the multiscalar manifestations of loss and destruction through material-semiotic figure “spent earth,” a toxic waste by-product generated by industrial bleaching crude oils into edible oils. Drawing on two distinct encounters with spent earth in Indonesian palm oil sector, reflects substance's unevenly distributed effects across peoples, places, generations; its as...

Iron oxide/activated carbon (FeO/AC) composite adsorbent material, which was used to modify the coal-based activated carbon (AC) 12 x 40, was prepared by the special ferric oxide microcrystal in this study. This composite can be used as the adsorbent to remove arsenic from drinking water, and Langmuir isotherm adsorption equation well describes the experimental adsorption isotherms. Then, the a...

Refining of edible and cosmetic oil consists various steps which include bleaching process. Bleaching is an important step as it removes colour pigments resulting in improvement taste appearance. In this work, activated bentonite marula shells were used to refine crude oil. Fresh was using H2SO4 whilst both KOH. Vacuum performed the shells. Fresh, activated, spent bentonites analysed X-ray Diff...

Normal pregnancy is associated with reduced blood pressure (BP) and decreased pressor response to vasoconstrictors, even though the renin-angiotensin system is upregulated. Angiotensin II (ANG II) activates both angiotensin type 1 receptors (AT(1)Rs) and angiotensin type 2 receptors (AT(2)Rs). Although the role of the AT(1)R in vascular contraction is well documented, the role of the AT(2)R in ...