This study develops a model to fit the surface tension of water/ethanol mixture for complete composition range from 0 1. The theoretical framework complements Van Der Waals theory on density gradient. modelling results overcome limitation Gibbs adsorption isotherm, which completely ignores interfacial layer. Furthermore, presents new method correctly calculate layer binary liquid and surfactant...

Abstract A perfect isotactic poly(methacrylic acid) ( it ‐PMAA) is synthesized and characterized by NMR spectroscopy. Surface pressure versus mean area per repeat unit π−A ) isotherms are recorded compared with atactic at ‐PMAA). ‐PMAA exhibits a isotherm, indicating the formation of stable Langmuir film. The isotherm has characteristic pseudo‐plateau π ≈11–14 m N −1 attributed to creation worm...

Equilibrium moisture content (EMC) as a function of relative humidity (RH) was measured in oriented strandboard. particleboard, medium-density fiberboard, hardboard, high pressure laminates, and solid wood. The measurements were made in both adsorption and desorption at 2 9 2 . The EMCRH data were fit to Nelson's sorption isotherm. It was found that Nelson's model can be used to describe the ex...

We quantitatively studied the hydration and dehydration behaviour of the three astrobiological model lichens Xanthoria elegans, Buellia frigida and Circinaria gyrosa by thermoanalysis and gravimetric isotherm measurements under close-to-Martian environmental conditions in terms of low temperature and low pressure. Additionally, the impact of UVC exposure on the isolated symbionts of B. frigida ...

probable poor cohesion. The upper surface might be slightly indurated [2]. The MER rover may have the opportunity to examine this deposit, which occurs near the center of the Gusev landing ellipse. The deposition of other airfall units in the Sinus Meridiani region coincides with increased erosional activity there, suggesting a role for airfall deposits in the delivery or mobilization of volati...

Abstract A new analytical framework that relies on minimal inputs and combines a number of existing techniques to estimate reversible drying shrinkage strain OPC-based materials is presented. This includes multiscale for estimating water (de)sorption isotherm (WSI), an homogenization technique bulk modulus, multi-mechanism based formulation. The needed are the cement composition, microstructura...

In this study, modeling of hydrogen, nitrogen, carbon monoxide, methane and carbon dioxide sorption on UTSA-16 framework extrudates in the pressure swing adsorption process was carried out. The pure gas adsorption of these gases at the pressure range (0 to 80) bars at (298, 313, and 338) K have also been measured in a fixed bed. Langmuir, Toth, Sips, UNILAN, Virial and Dubinin-Astakhov adsorpti...

The interfacial properties of bovine testicular hyaluronidase were investigated by demonstrating the association of hyaluronidase activity with membranes prepared from bovine testis. Protein adsorption to the air/water interface was investigated using surface pressure-area isotherms. In whichever way the interfacial films were obtained (protein injection or deposition), the hyaluronidase exhibi...

background: the aim of this study was to assess the predictive capacity of body composition estimated by bioelectrical impedance analysis (bia) to identify abnormal blood pressure in physical education and sport teaching students in the city of ankara. methods: data for this cross-sectional study were obtained in the city of ankara in 2014. a total of 133 students aged 20-35 yr participated in ...

background metabolic syndrome (mes) consists of central obesity, hypertension, reduced high density lipoprotein (hdl), elevated serum triglycerides and high fasting blood sugar (fbs). they are susceptible to cardio-vascular disease, and insulin resistance. the goal of present research was to assess any relation between the composition of the body in type 1 diabetes mellitus (t1dm) children and ...