We have introduced a novel solvent-based method to roughen polymer surfaces and characterized treated polypropylene (PP). The consists of three main steps: solvent treatment, drying, peeling. investigated the effects process parameters such as time immersion in solvent, temperature, drying temperature on surface morphology created. structure formed is mainly influenced by temperature. also wett...

In the mid-twentieth century, Dr. Donald Stookey identified the importance and usability of nucleating agents and mechanisms for the development of glass-ceramic materials. Today, a number of various internal and surface mechanisms as well as combinations thereof have been established in the production of glass-ceramic materials. In order to create new innovative material properties, the presen...

Smectic-A nucleating in the

Isolated centrosomes nucleate microtubules when incubated in pure tubulin solutions well below the critical concentration for spontaneous polymer assembly (approximately 15 microM instead of 60 microM). Treatment with urea (2-3 M) does not severely damage the centriole cylinders but inactivates their ability to nucleate microtubules even at high tubulin concentrations. Here we show that centros...

We study the viscosity corrections to the growth rate of nucleating bubbles in a slightly supercooled first order phase transition in 1 + 1 and 3 + 1 dimensional scalar field theory. We propose a microscopic approach that leads to the non-equilibrium equation of motion of the coordinate that describes small departures from the critical bubble and allows to extract the growth rate consistently i...

Quaternary glasses with the composition 50SiO2 – 25TiO2 5La2O3 (20-x) Na2O xY2O3 where x : (0 ≤ ≥ 10) were synthesized using melt-quench technique. XRD examined nature of prepared glasses. UV-spectroscopic investigated glass system studied at room temperature. Both optical bandgap and refractive index present have been increased. The polarizability basicity determined. Thermal parameter values ...

This manuscript presents the characterization of individual ice nucleating and ice residual particles using SEM/EDX analysis. The ice nucleating particle and ice particle residuals were collected by three different instruments. This study provides very useful information/insights on the comparison of sampling instruments/techniques for ice nuclei. The subject of the manuscript is suitable for p...

Automotive windshield represents a large volume of solid waste due to limited recycling. Glass-ceramics were produced from discarded windshields with Nb2O5 as nucleating agent at concentrations 0, 5, 10, and 15 wt% 700 800 °C sintering temperatures. Mechanical electrical characterizations glass-ceramics performed. Equibiaxial flexural strength was performed related porosity. At °C, favors the m...

Epiphytic populations of Pseudomonas syringae and Erwinia herbicola are important sources of ice nuclei that incite frost damage in agricultural crop plants. We have cloned and characterized DNA segments carrying the genes (ice) responsible for the ice-nucleating ability of these bacteria. The ice region spanned 3.5 to 4.0 kilobases and was continuous over this region in P. syringae Cit7R1. The...