Materials Literature
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Pulsed supersonic expansion is now a ubiquitous technique used in all laboratories interested in spectroscopic and reaction dynamics studies. The conversion of enthalpy to mass flow leads to the production of low temperature flows with well-defined kinetic energy. High speed valves are used to make short pulses allowi…
A distribuição de pesos moleculares (DPM) de um polímero afeta as propriedades mecânicas, térmicas e reológicas do material. Além disso, a análise em tempo real de uma reação de polimerização é uma tarefa complicada e, consequentemente, os procedimentos de controle devem ser baseados em valores gerados pelos modelos.…
Οι σύγχρονες τάσεις στην σχεδίαση πολυπύρηνων επεξεργαστών επικεντρώνονται στην επιθετική ενσωμάτωση πολλαπλών πυρήνων εντός του ίδιου κυκλώματος, αποσκοπώντας σε οφέλη επίδοσης και ισχύος μέσω του αυξημένου παραλληλισμού επιπέδου νήματος. Σε τέτοια περιβάλλοντα, η αξιοπιστία αποκτά ολοένα και αυξανόμενο ενδιαφέρον, κ…
The passing of the Australian native - The Wanmaring group from the head of the Great Australian Bight at Ilgamba water became extinct in 1918 or 1920.
Gemcitabine containing pH sensitive liposomes (PSL) has been prepared using a Small Volume Incubation (SVI) method. The entrapment efficiency (EE) and drug loading (DL) were 29.5 ± 0.2% and 4.2 ± 0.2%, a respective 7- and 70-fold increase compared to the thin film hydration extrusion (TFHE) method. The particle size a…
Berbagai penelitian dan percobaan dibidang beton dilakukan sebagai upaya untuk meningkatkan kualitas beton, teknologi bahan dan teknik-teknik pelaksanaan yangdiperoleh dari hasil penelitian dan percobaan tersebut dimaksudkan untuk menjawabtuntutan yang semakin tinggi terhadap pemakaian beton serta mengatasi kendalaken…
International audience
To ensure self-form cutting elements in the operation of a technology manufacturing business with the use of concentrated energy flows. It is shown that the application of technology, a reduction in manufacturing operations and improve the reliability and durability of parts. The changes shape and size of the work wea…
A new experimental technique has been developed for dynamically measuring the thermomechanical properties of fissile materials. The speed of sound, modulus of elasticity, and coefficient of thermal expansion as a function of temperature for uranium alloys can be determined using the heating conditions that exist in a…
Flame spread over solid samples has been studied from many points of view, as it is key for fire safety, yet it is a complex phenomenon that involves processes occurring in both the solid and the gas phases. This Ph.D. thesis studies the flame spread over thin solid samples in processes more complex than the classical…
Classification of fibers
Future of nanotechnology In 2000, Roco et al . [1] estimated that there would be two million nanotechnology workers worldwide (800 000 in the United States) and the product value would reach $1 trillion, of which $800 billion would be in the United States, by 2015, with a 25% rate growth. The initial estimation for th…
Mechanical components fulfilling the functions expected of them, the inside surfaces of the parts greater than the high stress and are exposed to abrasive forces. This stress limit is exceeded the material strength and surface forces on the surface of the material starts cracking. Variable forces if they are a load of…
A photo-isomerization of azobenzene and its opto-mechanical effect on the photoactive liquid crystalline polymer is investigated via molecular dynamics (MD) simulation. In order to describe the cis-state of the azobenezene in classical MD model, an additional dihedral potential parameter of N=N bond is implemented int…
In this study, a hierarchical multiscale modeling approach to characterize the elastoplastic behavior of polymer nanocomposites is proposed. Molecular dynamics simulation and a continuum nonlinear two-scale homogenization method are merged into the proposed multiscale modeling. The characterization of the condensed in…
Azobenzene liquid crystal elastomers (LCE) is well known for its high contraction under UV (365nm) light and goes back to original shape when visible light (400nm) is added. The main reason for this photo deformation of the azobenzene LCE is due to the photo-isomerization of the azobenzene, which turns from trans to c…
Four new and several known cardiotonic steroids were discovered from Streblus asper Lour. (Moraceae) collected in South Vietnam. The structures of the new compounds were established by analysis of their CD, IR, UV, NMR, and mass spectra, with those of the known compounds being determined by comparison of their spectro…
F igure 2 in the original article shows the geometry of a local energy minimum and the adsorption energy profile of the global energy minimum for benzene on Au(111).While it was not stated there that the shown geometry and the energy profile refer to the same adsorbed structure, we have realized that their juxtapositi…
Hippocratea celastroides is used in Mexican Traditional Medicine for the treatment of gastric and intestinal infections, systemic and skin inflammation, injuries and gastritis. A methanolic (MeOH) extract was prepared from the root-bark, then subjected to an acid-base extraction obtaining the total alkaloid and the no…
Ternstroemia pringlei is a medicinal plant widely distributed in Mexico. Since , a series of antioxidative phenylethanoid glycosides have been isolated in the Asiatic species T. japonica [1], we decided to study the antioxidative action of T. pringlei extracts obtained from various organs, and to investigate the prese…