FORMULASI DAN EVALUASI HAND SANITIZER SPRAY EKSTRAK BUAH BELIMBING WULUH (Averrhoa bilimbi L)

The tendency of society at this time to return to nature (Back to nature) is by using plants as treatment. The use of star fruit as the main ingredient in the manufacture of a hand sanitizer spray on the basis of star fruit has flavonoid compounds that have the potential as antibacterial. Hand sanitizer spray is made into 3 formulas with a concentration ratio of F1 (10%), F2 (12%), and F3 (15%). Each formula was subjected to physical tests in the form of organoleptic tests, pH tests, homogeneity tests and freeze and thaw stability tests for 6 storage cycles at 4°C and 40°C. The organoleptic results showed that the preparation did not change during four weeks of storage. On examination, the pH of the preparation decreased for F1 with a pH of 5.25 to 4.88; F2 with a pH of 5.14 becomes 4.77, and F3 with a pH of 4.87 becomes 4.60 but this value is still included in the specified range. The homogeneity of the preparations F1, F2, and F3 was only homogeneous in the first week and for the stability of the preparations F1, F2 and F3 were only stable in cycle 1 and cycle 2.

The Level of the Functional Movement Screen Among Traditional Dancers

Movement assessments are commonly used to assess athlete’s risk of injury as well as basic and specific skill movement patterns; however, dance is identified to be differing from sports because the average dancer’s training load is higher than the athletes. This study aims to identify the difference in the Functional Movement Screen (FMS) level among traditional dancers in Malaysia. A quasi-experimental study design was adopted, which involved 66 dancers (M = 33; F = 33). The study comprised traditional dancers from three ethnic backgrounds, namely, Malay, Chinese and Indian. The descriptive analysis described the level of the dancers’ FMS, as follows: Malay (M = 16.18, SD = 2.062), Chinese (M = 18.50, SD = 1.102), Indian (M = 18.23, SD = 1.445). The ANOVA analysis found a significant difference in the FMS scores among all three groups of dancers, F (2,63) = 14.026, p >.000. The deep squat, hurdle step, shoulder mobility, active straight leg raise and trunk stability tests for push-up indicated a significant difference, whereas the inline lunges test and rotational stability tests showed no significance difference. However, the Post Hoc analysis showed no significant difference between the Chinese and Indian dancers. It can be concluded that there is a difference in FMS scores between Malay, Chinese and Indian dancers. FMS may be a useful tool to help identify dancers about the risk of injury and improve their movement quality.

SAFETY OF TRANSPORT OPERATIONS PERFORMED USING PALLET LOAD UNITS

During transport operations, even under normal operating conditions, the loading unit is subject to inertial forces, which may cause deformation of the unit, and in extreme cases, its disintegration. Stretch film wrapping is the most commonly used method of securing a load unit. This paper presents a new simplified simulation model of a class A load unit, with a layered structure, secured with stretch film. Between the layers of packaging, stick-slip friction was applied. A method of estimating the containment force was also proposed. This model can be used to pre-determine the number of film layers necessary to ensure load stability. Simulations can reduce the amount of film used and the number of stability tests performed experimentally.

FMS assessment and core stability in a group of amateur climbers

Background: The objective of the study was to assess the functional status of people who regularly climb for recreational purposes, using the FMS (Functional Movement Screen) and core stability tests (McGill's torso muscular endurance tests). This paper also attempts to determine the relation between the assessment of functional efficiency and the results obtained in core stability tests. Material and methods: The study group were consisted of 30 amateur climbers (aged 26 ±3), who were compared to a control group of 30 people who don’t climb but recreationally practice volleyball (aged 22 ±3). All participants performed each of the seven FMS trials and the three McGill's tests. Results: Amateur climbers, in comparison to non-climbers, were achieved higher scores in each of the core stability trials (p<0,05). Climbers also scored significantly higher results in all FMS trials as well as in the final average (19,0 3 ±1,54 vs. 16,60 ±3,60; p<0,01). In addition, there were found positive correlations between FMS and core stability trials in the group of climbers (Deep Squad vs. Side bridge test; In-Line Lunge vs. Side bridge test; Rotational Stability vs. all trials of the core stability test). Conclusions: People recreational practicing climbing are characterized by a high level of functional efficiency and above-average levels of deep trunk muscles endurance, responsible for the proper functioning of the central stabilization. Relationship between the overall results of the FMS and the core stability tests in the climbers' group shows that proper stability training, which is a part of the climbers training, may result in higher athletes’ performance.

Stability Assessment of Four Chimeric Proteins for Human Chagas Disease Immunodiagnosis

The performance of an immunoassay relies on antigen-antibody interaction; hence, antigen chemical stability and structural integrity are paramount for an efficient assay. We conducted a functional, thermostability and long-term stability analysis of different chimeric antigens (IBMP), in order to assess effects of adverse conditions on four antigens employed in ELISA to diagnose Chagas disease. ELISA-based immunoassays have served as a model for biosensors development, as both assess molecular interactions. To evaluate thermostability, samples were heated and cooled to verify heat-induced denaturation reversibility. In relation to storage stability, the antigens were analyzed at 25 °C at different moments. Long-term stability tests were performed using eight sets of microplates sensitized. Antigens were structurally analyzed through circular dichroism (CD), dynamic light scattering, SDS-PAGE, and functionally evaluated by ELISA. Data suggest that IBMP antigens are stable, over adverse conditions and for over a year. Daily analysis revealed minor changes in the molecular structure. Functionally, IBMP-8.2 and IBMP-8.3 antigens showed reactivity towards anti-T. cruzi antibodies, even after 72 h at 25 °C. Long-term stability tests showed that all antigens were comparable to the control group and all antigens demonstrated stability for one year. Data suggest that the antigens maintained their function and structural characteristics even in adverse conditions, making them a sturdy and reliable candidate to be employed in future in vitro diagnostic tests applicable to different models of POC devices, such as modern biosensors in development.

Test-Retest Reliability of Low-Cost Posturography for Assessing Postural Stability Control Performance during Standing

Postural stability control performance assessment is necessary in providing important information for individuals who are at risk of falling or who have balance impairment. Instrumented assessment is suggested as a valid and reliable test, but the cost and the difficulty of setup are significant limitations. The aim of this cross-sectional (test-retest reliability) study was to develop and determine the reliability of a low-cost posturography for assessing postural stability control performance during standing. The low-cost posturography was developed with four load cells and an acrylic platform. The center of pressure (COP) displacement and velocity were analyzed using written software. Test-retest reliability was performed with six different standing postural stability tests in twenty healthy volunteers on two different days. Intraclass correlation coefficient (ICC), standard error of measurement (SEM), coefficient of variation (CV), and Bland–Altman plot and limits of agreements (LOA) were used for analyses. The low-cost posturography was accurate (ICC = 0.99, p < 0.001 ; SEM = 0.003 cm) when compared to the true with calculated X and Y coordinates, with a moderate to excellent test-retest reliability for both COP displacement (ICCs ranged 0.62–0.91, p < 0.05 ; SEMs ranged 17.92–25.77%) and COP velocity (ICCs ranged 0.62–0.91, p < 0.05 ; SEMs ranged 18.09–27.69%) in all standing postural stability tests. Bland–Altman plots and LOAs suggested good agreement of tested parameters from the developed low-cost posturography between different days. In conclusion, the developed low-cost posturography had adequate reliability for assessing COP displacement and velocity during standing postural control stability performance tests.

Impact of Exchange Rate Volatility on Unemployment in Pakistan

Unemployment is an alarming issue for bothdeveloped and developing countries, which sometimesvaries from region to region as well. Unemployment accompaniedwith Exchange Rate Volatility (ERV, hereafter) worsens thesituation. This paper tries to explore the relationship between ERVand unemployment and other selected factors in the case ofPakistan from 1980 to 2018. After necessary simulation, the studysupported the analyses through the autoregressive distributed lagmodel. Where, long-run coefficient reveals that ERV and exportsboth are positively affecting unemployment; whereas, import isinversely related to unemployment. Alternatively, export and GDPare inversely affecting unemployment in the short run; further,stability tests also support the relationship between the selectedvariables to achieve the long-run equilibrium. The study furthersuggests that the Government of Pakistan need to stabilizeexchange rate to control unemployment, which is 8 percent in thelong-run and 11 percent in the short run.

Sol Gel Technique to Prepare Composite Material of Glass-Dye-Polymers

Herein we describe the synthesis and in-depth characterization of chemically blended hybrid glasses in which polymer molecules are uniformly distributed and covalently bonded to inorganic matrices. This approach uses a monomer with double bonds, which are hydrosilylated with triethoxy silane and co-condensed with silicon tetraalkoxide to afford a molecular composite of SiO2 glass and the polymer. The generated coposites were characterized using SEM, TGA and XRD as well as a host of stability tests. They showed increased stability and uniform distribution of the blend. <br>

Sol Gel Technique to Prepare Composite Material of Glass-Dye-Polymers

Herein we describe the synthesis and in-depth characterization of chemically blended hybrid glasses in which polymer molecules are uniformly distributed and covalently bonded to inorganic matrices. This approach uses a monomer with double bonds, which are hydrosilylated with triethoxy silane and co-condensed with silicon tetraalkoxide to afford a molecular composite of SiO2 glass and the polymer. The generated coposites were characterized using SEM, TGA and XRD as well as a host of stability tests. They showed increased stability and uniform distribution of the blend. <br>