Materials Literature
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Beton merupakan salah satu bahan konstruksi bangunan, yang terdiri dari semen, agregat, air dan bahan tambah (admixture dan additive). Beton banyak digunakan dalam berbagai jenis konstruksi karena memiliki banyak kelebihan dan yang tinggi, ekonomis, dan mudah dibentuk. Kuat. Modulus halus butir (MHB) adalah suatu inde…
Synthesis, characterization and biodegradability of copolyesteramide: poly[L-lactic acid-co-(-caprolactam)] by (ring-opening/condensation) polymerization Chapter 2 25 Synthesis, characterization and biodegradability of copolyesteramide: poly[acrylamide-co-(-caprolactone)] by (ring-opening/hydrogen transfer) polymeri…
A Fabry–Perot model is proposed to analyze the resonance behaviors of a metal–dielectric–metal waveguide with a rectangular side-coupled cavity that has a horizontal width below one wavelength. Two vertically propagating waveguide modes in the cavity are introduced in the model, and the vertical resonances in the cavi…
Abstract Objective: The aim of the study was a comparative investigation by spectral and thermal analysis in order to asses a number of characteristics of different varieties ofrawmaterials of ursodeoxycholic acid and ibuprofen. The different dissolution behavior of two ursodeoxycholic acid pharmaceutical product by c…
The liquid crystals (LC), due to their naturally high bulk ordering, strong birefringence and easy electrooptical driving, serve as matrix in the nanocomposites doped with non-mesogenic or mesogenic nanoparticles. The nanocomposite's structural units exhibit very complex molecular form indicating the strength and the…
Polypropylene composites containing carbon black fillers were produced by vibration assisted extrusion process. Solid (unfoamed) composite samples were molded by conventional injection molding method, while structural foams were molded by a low pressure process. The foamed samples were evidenced to have a solid skin-f…
Presented at the Nano@Tech Meeting on February 9, 2016 at 12:00 p.m. in room 1116 of the Marcus Nanotechnology Building, Georgia Tech.
La tesi di dottorato è focalizzata sullo studio e sullo sviluppo di materiali innovativi e avanzati a base di zirconia. Il progetto può essere diviso in due parti, la prima basata sullo studio dei polimorfi cristallini della zirconia in presenza di cationi aliovalenti (Y, Eu, Ta) e la seconda sulla preparazione di n…
Nanostructures tend to comprise distinct and measurable forms, which can be referred to in this context as nanopatterns. Far from being random, these patterns reflect the order of well-understood chemical and physical laws. Under the aegis of said physical and chemical laws, atoms and molecules coalesce and form discr…
Carbon-based solid acid catalysts have shown significant potential in a wide range of applications, and they have been successfully synthesized using simple processes. Magnetically separable mesoporous carbon composites also have enormous potential, especially in separation and adsorption technology. However, existing…
L’objectiu del present treball ha consistit en l’obtencio i caracteritzacio d’hidrogels i materials porosos d’acid hialuronic (HA) entrecreuat amb butanediol diglicidil eter (BDDE) per a ser utilitzats com a sistemes d’alliberament controlat de farmacs. La seleccio de l’HA per a l’obtencio dels materials ha sigut moti…
The electro-optical (EO) response of planar single layers of polymer-dispersed liquid crystal (PDLC) composites of relatively large nematic microdroplets modified by layers of teflon (PTFE), was studied. The PDLC films were prepared from liquid crystal E7 and photopolymer NOA-65 in cells assembled with parallel or ort…
In the present work, low energy Ga+ ion beam implantation was used for the structural and optical properties modification of tetrahedral amorphous carbon (ta-C) thin films, using gallium (Ga + ) as the ion species. Thin film samples (d∼40nm) of ta-C, deposited by filtered cathodic vacuum arc (FCVA), have been implante…
Three - dimensional poly (e- caprolactone) (PCL) scaffolds as suitable biocompatible material for manufacturing tissue replacements are utilized for tissue engineering purposes. The porous structures are fabricated by rapid prototyping method (Bioscaffolder) based on hypodermic dispensing process. The consecution of e…
Superantiwettability, including superhydrophobicity, is an enhanced effect of surface ruggedness via the Cassie-Baxter wetting state, and has many applications such as antifouling, drop manipulation, and self-cleaning. However, superantiwettability is easily broken due to Cassie-Baxter to Wenzel wetting state transiti…
Here we question the generality of the conventional definition of a native conformation –as the 3-dimensional conformation of an entire globular polypeptide molecule. Although considered common knowledge, and thus not explicitly stated in modern writings, this definition of native conformations has a history as old as…
Abstract Rb2Hg3Se4, orthorhombic, Ibam (no. 72), a = 6.4183(9) Å, b = 11.626(2) Å, c = 14.454(2) Å, V = 1078.5(3) Å3, Z = 4, R gt (F) = 0.038, wR ref (F 2 ) = 0.142, T = 173 K.
The structural stabilities and electronic structures of graphene sheets laid on stepped SiC(0001) surfaces are theoretically investigated by density functional theory calculations. To precisely estimate the van der Waals (vdW) binding energy between graphene sheets and SiC surfaces, the vdW density functional (vdW-DF)…
En el presente trabajo se ha estudiado la permeabilidad de peliculas polimericas que presentaron un nucleo y coraza compuesto por poliestireno y poli(acrilato de butilo) respectivamente, en proporcion 40:60. Se realizo mediciones de coeficientes de permeabilidad a peliculas de polimero nucleo-coraza PSt/PBA = 40/60 em…
The Surface Renewal Theory (SRT) is one of the most unfamiliar models in order to characterize fluid-fluid and fluid-fluid-solid reactions, which are of considerable industrial and academicals importance. In the present work, an approach to the resolution of the SRT model by numerical methods is presented, enabling th…