Materials Literature
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Les polymeres conducteurs organiques presentent des proprietes electriques qui offrent de nombreuses possibilites de materiaux, tels que les batteries, les diodes electroluminescentes, les dispositifs microelectroniques, les cellules photovoltaiques, les inhibiteurs de corrosion, les capteurs, etc. Parmi eux, la PANI…
Poly(Ionic Liquid)s (PILs) are a class of ionic liquids that feature polymerizable groups in either the cation, the anion or both. PILs can be used in various applications, including solid ion conductors or for CO2 absorption. Several PILs show the presence of a lower critical solution temperature (LCST), making them…
BACKGROUND: Due to its extraordinary chemical properties, the cysteine amino acid residue is often involved in protein folding, electron driving, sensing stress, and binding metals such as iron or zinc. Lactococcus lactis, a Gram-positive bacterium, houses around one hundred cysteine-rich proteins (with the CX2C motif…
Several applications of nanotechnology in the food industry are reviewed with a special emphasis on its use in the food packaging and processing sector. Nanomaterials are used as high-barrier packaging materials and as potent antimicrobial agents in food packaging. Other applications of nanoparticles include their use…
Analyse expérimentale et numérique du comportement électromagnétique de pompe à induction linéaire annulaire La recherche actuelle dans le domaine des pompes à induction électromagnétique s’oriente sur la question de l'instabilité MagnétoHydroDynamique (MHD) avec un intérêt particulier pour les régimes à haut nombre d…
A highly strained BiFeO3 (BFO) thin film is transformed between phases with\ndistinct structures and properties by nanosecond-duration applied electric\nfield pulses. Time-resolved synchrotron x-ray microdiffraction shows that the\nsteady-state transformation between phases is accompanied by a dynamical\ncomponent tha…
Henry and William Lawrence Bragg 'for their services in the analysis of crystal structure by means of X-rays'. In celebrating the centennial of this award, it is useful to reflect on the achievements of a century ago. In the brief but astonishingly productive period after the discovery of X-rays by Ro ntgen (1895), we…
We report low-temperature measurements of scanning tunneling spectroscopy (STS) on the quasi-two-dimensional organic superconductor $\kappa$-(BEDT-TTF)$_2$Cu[N(CN)$_2$]Br. By the application of an in situ cleaving technique we are able to perform a combined topographical and spectroscopical study and find clear eviden…
Examples of the selective leaching of components in carbonate rocks are considered. The microgranular calcite of cement is dissolved in bioclastic limestones with the interstitial cement. Owing to the presence of protein-type material, shells and microbial clots are not subjected to leaching. In contrast, shells of th…
Di Industri manufaktur, peningkatan kebutuhan akan penggunaan pahat semakin meningkat. Penelitian di bidang pengembangan pahat juga sangat berkembang luas. Banyak sekali penelitian tentang material dari pahat. Hal ini dituntut agar material baru dari pahat mempunyai efektifitas dan efisiensi yang lebih tinggi. Penelit…
Взаимодействие фитиновой кислоты в водной среде с гидрохлоридом глюкозамина приводит к образованию комплексов фитиновой кислоты и глюкозамина InsP6 • 5ГА, состав которых доказан элементным анализом по содержанию углерода, водорода, азота и фосфора. Методами ИК, 1H, 13C и 31P ЯМР спектроскопии и потенциометрического ти…
We study the coherent mixing between two-particle (single exciton) and four-particle (biexciton) states of a semiconductor nanocrystal resulting from the coulomb coupling between states with different numbers of electron-hole pairs. Using a simple model of the nanocrystal wave functions and an envelope function approa…
The algae of three lakes of volcanic origin, Laguna Hule, Congo and Bosque Alegre (740 m. above see leve!) were studied frorn 1989 to 1993. Five Trachelomonas (Euglenophyta ) species and sorne of their varieties are described. Descriptions and drawings for the following se ven taxa are presented: Trachelomonas volvoci…
Abstract : This report summarizes the major results obtained in the studies of gas-generating compositions involving novel nanocomposite and mechanically alloyed reactive materials, produced by arrested reactive milling. An experimental setup that allows laser ignition, high-speed and infrared video recording, and mas…
Beta-amyloid (Aβ) is a well-known pathological marker for Alzheimer's disease. Cell surface glycans such as sialic acid are known to play important roles in facilitating the aggregation of Aβ and the formation of amyloid plaques. Mimicking this process, researchers have synthesized a variety of sialic acid-coated nano…
Porous or "nanoporous" materials have thus far found applications in glycan enrichment, separation, detection, drug delivery, and supported synthesis. This chapter presents a survey of applications of porous materials in glycoscience, including mesoporous silica, mesoporous carbon, porous alumina, porous titania, poro…
This chapter presents some closing thoughts pertaining to the concepts discussed in the chapters of this book. It presents information on toxicology of nanomaterials, cytotoxicity of carbohydrate-modified nanomaterials, and toxicity-related application of carbohydrate nanomaterials. Recently, manufactured nanomaterial…
Food-borne diseases are a global public health issue, resulting in medical expenses and productivity losses and affecting global health, trade and food market. In addition, consumer‘s demand for more natural and minimally processed foods as well as awareness of environmental issues have also led researchers to develop…
The purpose of this work was the elaboration by pulsed laser deposition (PLD) and the characterization of thin films of oxides in the K-Nb-O system, and more precisely that of a tetragonal tungsten bronze phase (TTB) as nanorods, of potential interest as a new lead free piezoelectric. In spite of a strong growth compe…
As the nuclear industry moves to advanced ceramic based materials for cladding and core structural materials for a variety of advanced reactors, new standards and test methods are required for material development and licensing purposes. For example, General Atomics (GA) is actively developing silicon carbide (SiC) ba…