Heat cure denture base is the most commonly used material for fabrication of removable prosthesis to present day. However difficulties persist in satisfactory due poor mechanical properties which have resulted frequent repairs dental practice. The study aimed investigate effect Zirconium oxide nanoparticles (ZrO2NPs) on flexural strength and porosity its correlation. X-ray diffraction (XRD) was...

The abilities of various extractants to recover four arsenic species [As(iii), As(v), dimethylarsinic acid (DMA), and monomethylarsonic acid (MMA)] from soils spiked with 20 micro g g(-1) As were investigated. The extractants were water, buffer solutions (citrate and ammonium dihydrogen phosphate), acidic solutions (phosphoric acid and acetic acid), a basic solution (sodium hydroxide) and house...

Microencapsulation of model drug, acetylsalicylic acid into bio-based polymer, alginatepectin matrix and chitosan had been undertaken in this work to characterize the microcapsules based on their composition. Alginate-pectin with the proportion of 40:60 solution was prepared with 0.3 g of drug. This mix was homogenized and atomized using nitrogen gas into 1.0M calcium chloride solution to form ...

The conventional extraction method has low efficiency. This study aims to optimize the ultrasonic-assisted conditions of andrographolide from A. paniculata. A ½ inch ultrasonic probe sonicator was used extract effects time (X1), duty cycle (X2) and amplitude (X3) on yield (Y) were investigated by using response surface methodology. Experiments designed according 3-level 3-factor Box Behnken Des...

In recent years, industries have been investing to develop a potential alternative fuel substitute the depleting fossil fuels which emit noxious emissions. Present work investigated effect of ferrous ferric oxide nano-additive on performance and emission parameters compression ignition engine fuelled with chicken fat methyl ester blends. The was included various blends at different ppm 50, 100,...

Antioksidan merupakan suatu senyawa yang berperan penting dalam mekanisme pertahanan tubuh melawan radikal bebas yaitu menghambat reaksi oksidatif. Salah satu bahan alam memiliki aktivitas antioksidan biji kopi robusta. Biji robusta diketahui mengandung polifenol sebagai antioksidan. Nanooemulgel sediaan gel diinkorporasikan basis dan partikel berukuran nano. Penelitian ini bertujuan untuk 1) m...

Burr formation is a common and undesirable phenomenon in metal cutting operations, reducing the quality, accuracy, functionality of component. In micromachining, burrs are smaller but comparable to feature size difficult remove. Most traditional deburring operations cannot be applied micromachined components without proper scaling, as on part very small prone damage. Ultrasonic energy widely us...

Biodegradable polymeric nanoparticles are considered as promising drug delivery systems due to their high potential in tuning the release and alleviate side effects. However, particle greater than 200 nm can be detected by immune system. Thus, this paper focuses on elaboration of size-controlled poly (lactic-co-glycolic acid) smaller encapsulating a model drug. For purpose, biodegradable polyme...

This paper investigates the mixing of the graphene (GR) particles in the polyester (PE) resin by using two different dispersion techniques which are mechanical stirring and sonication method. This paper shows that the mixing method has a significant effect on the corrosive behavior of the coatings. Fourier Transform Infrared Spectroscopy (FT-IR) characterization technique is done to analyze...

Alkyd resins are amongst the most important and widely used resins in coating sectors. In this communication we report on preparation of alkyd resins emulsified by grafted acrylic resins on their fatty acid moieties. Both high-shear mechanical homogenizer and ultra-sonic sonicator were used step-wise to disperse the alkyd resin and acrylic based monomers in aqueous media. The resins are of nano...