SENSIBILIDAD DE LA GARRAPATA COMÚN DEL BOVINO Rhipicephalus (Boophilus) microplus A IVERMECTINA ESTIMADA CON EL MODELO SIGMOIDEO DE RESPUESTA MÁXIMA O DE HILL

The aim of this study was to obtain pharmacodynamics parameters to detect resistance or susceptibility of R. microplus strains to ivermectin (IVM). Two larvae samples; a susceptible strain (S) and field isolation (T) were treated with increasing concentrations of IVM using the larvae immersion technique the efficacy values measured at 24 hours were analysed with the sigmoidal maximum response so called Hill model as statistical analysis. The results obtained showed that the IVM have an all or nothing response represented by the Hill coefficient value >1 in both samples. Additionally, a low concentration effect was observed as E0 de 12.83% (S) and 9.91% (T). The field isolation larvae were susceptible to IVM in comparison with the susceptible strain by the resistance ratio (RR) which in one case was not significantly greater that one (RR50= 0.756 and RR90=1.009).

Antimicrobial textile modified with silver nanoparticles in-situ synthesized using weed leaves extract

Silver nanoparticles (AgNPs) presence has considerable impact on microbial growth. In this paper, AgNPs was deposited on surface of four textiles to enhance the anti-microbial properties using immersion technique. Immersion technique was selected since it was simple, no need high energies, and no additional equipment required. In addition, AgNPs was synthesized using in situ-bio technique which is non-toxic, harmless and eco-friendly approach. Four textiles were evaluated, such as TA, TB, TC and TD. The finding projected that antifungal ability was correlated to the type of the textiles. TC textile has the significant antimicrobial activity with 12.33 ± 2.08 of inhibition zone which followed by TD (16.00 ± 3.46), TB (17.67 ± 7.09), and TA (17.67 ± 6.65). In addition, the surface bonding AgNPs on textile was possibility caused by the -OH group. It has a lone pair of electrons on the O atom that can interact with AgNPs to form –OAg bonds.

Surface doping of non-fullerene photoactive layer by soluble polyoxometalate for printable organic solar cells

The non-fullerene photoactive layer can be induced an effective surface p-doping via polyoxometalate (PMA) solution immersion technique, making the device work efficiently although without an additional evaporated MoO3 hole-collecting layer.

Effect of Temperature and Frequency on the Acoustic Properties of Konjac Glucomannan-Agar Gels as Tissue Mimicking Materials

In this study, we determine the effect of temperature and frequency on the acoustic properties of konjac glucomannan (KGM)-agar gels to confirm their compatibilities as tissue mimicking materials (TMMs). The acoustic properties of four samples; A (KGM-0.10 g agar), B (KGM-0.20 g agar), C (KGM-0.30 g agar) and D (KGM-0.40 g agar) were measured using pulse echo immersion technique. Findings indicated that the longitudinal velocities of all samples were increased while their attenuation coefficients were decreased as the temperature increased from 27.0 to 37.0°C. It also showed that the phase velocities of all samples were independent to frequency but their attenuation coefficients were increased as the frequency increased from 4.0 to 6.0 MHz. KGM-agar gels are compatible as soft TMMs since their acoustic properties are comparable with the acoustic properties of soft tissue.

Teknik Desinfeksi Perendaman dan Penyemprotan Ekstrak Mengkudu (Morinda Citrifolia Liin), Terhadap Perubahan Stabilitas Dimensi Cetakan Alginat

Dental material that is often used in dentistry is alginate. Alginate molding material has imbibition properties that absorb water when it comes into contact with water so that the shape is easier to expand and syneresis is the loss of water content through evaporation, causing shrinkage of the alginate mold when left too long in the open air. It is recommended that the printed product be disinfected first to avoid cross infection. One of the herbs that has antibacterial properties is noni. The purpose of this study was to determine differences in immersion and spraying techniques with 0.5% sodium hypochlorite and noni extract 50%, 25% and 12% for 5 minutes. Data were analyzed by ANOVA test. The conclusion of this study is that there is a change in the stability of the dimensions of the alginate mold in the AB (anteroposterior) and BC distance inter junction techniques, at concentrations of 12% and 25%, experiencing a higher increase compared to the concentration of 50% but still within the clinical tolerance limit ie below 0.5%. The spraying technique has a smaller percentage change compared to the immersion technique. There is a change in dimensional stability of alginate molds with a significant difference in the immersion and spraying technique, soaking causes an increase indimensional changes compared to the spraying technique.