Materials Literature
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Abstract The excess pressure losses due to end effects (mainly entrance) in the capillary flow of several types of polyethylenes were studied both experimentally and numerically under slip and no-slip conditions. These losses were first measured as a function of the contraction angle ranging from 15° to 90°. It was fo…
Many algorithms that compare protein structures can reveal similarities that suggest related biological functions, even at great evolutionary distances. Proteins with related function often exhibit differences in binding specificity, but few algorithms identify structural variations that effect specificity. To address…
LSi−SiL (L = PhC(N t Bu) 2 ) ( 4 ) was reacted with benzil in toluene at room temperature to afford a compound that contains two siladioxolene rings connected by a Si−Si bond. This is the first reactivity study of 4 where the central Si−Si bond was not cleaved during the reaction. Furthermore, LSiCl (L = PhC(N t Bu) 2…
We have studied the degradation of well-characterized soluble heteropolymeric chitosans by a novel family 46 chitosanase, ScCsn46A from Streptomyces coelicolor A3(2), to obtain insight into the enzyme's mode of action and to determine its potential for production of different chitooligosaccharides. The degradation of…
Estimation of profiles of the effective ion charge at ASDEX Upgrade with Integrated Data Analysis, Rathgeber, S K, Fischer, R, Fietz, S, Hobirk, J, Kallenbach, A, Meister, H, Pütterich, T, Ryter, F, Tardini, G, Wolfrum, E, the ASDEX Upgrade Team
BACKGROUND: Recently the use of colloidal carriers as drug delivery systems is gaining more attention. Evaluation of the in vitro drug release is considered an important step during the development and quality control of such systems. Therefore, there is a need for a standard test technique to study in vitro drug rele…
A novel simultaneous flue gas desulfurization and denitrification (FGDD) process using sodium humate (HA-Na) solution was proposed. This study relates to the SO2/NO2 absorption efficiency and products of simultaneous removing SO2 and NO2 in a bubbling reactor, especially the effect of recycled water on the SO2/NO2 abs…
The current article makes a comparative analysis between the biodegradation of natural and synthetic polyethylene by three different species of Pseudomonas. The three Pseudomonas spp. (P1, P2, and P3) were indigenous to locations: (1) domestic waste disposal site dumped with household garbage and vegetable waste; (2)…
Several key enzymes in lignin biosynthesis of Populus have been down-regulated by transgenic approaches to investigate their role in wood lignification and to explore their potential for lignin modification. Cinnamate 4-hydroxylase is an enzyme in the early phenylpropanoid pathway that has not yet been functionally an…
A pioneering class of proccessable thermoplastic/thermosetting crossover polymers made of commercially available chemicals has been developed. The striking feature of this class of polymers is its inherently low viscosity at room temperature that facilitates the processability. The polymers have been synthesized from…
Concerns about climate change, security of supply, and depleting fossil fuel reserves have spurred a revival of interest in nuclear power generation in Europe and North America, while other regions continue or initiate an expansion. We suggest that the first stage of this process will include replacing or extending th…
The Purcell effect, acceleration of a spontaneous emission recombination rate, has been observed in InN/In nanocomposites with buried nanoparticles of metallic In. This effect, associated with localized plasmons, is characterized by the averaged Purcell factor as high as 30--40 in the structures with large enough part…
We have developed a unique metal nanoparticle (mNPs)-based assay to detect sequence-specific interactions between transcription factor and its corresponding DNA-binding elements. This assay exploits the interparticle-distance dependent optical properties of noble mNPs as sensing element and utilizes specific protein-D…
We present a fully flexible and ab initio-derived molecular mechanics force field for the ubiquitous copper paddle-wheel building block Cu 2 (O 2 C) 4 in metal−organic frameworks. The force field expression is based on the established MM3 force field, extended by additional cross terms and specific bond-stretching and…
We studied the photophysics of regioregular polythiophene/${\text{C}}_{61}$ (RR-P3HT/PCBM) blend films utilized for organic photovoltaic applications using the femtosecond transient and steady-state photomodulation techniques with above-gap and below-gap pump excitations and electroabsorption spectroscopy. We provide…
Ionic liquids have gained worldwide attention as green solvents in the past decade. This study explores, for the first time, the fundamental science and engineering of using ionic liquids as a new generation of solvents to replace traditional organic solvents for the fabrication of flat sheet membranes and hollow fibe…
This work reports the synthesis and characterization of a series of functional aromatic polyimides (OXTA-PI)s containing triphenylamine and 1,3,4-oxadiazole moieties. All the polyimides exhibit high glass transition temperatures of 309−319 °C. A resistive switching device with the sandwich structure of indium−tin oxid…
This paper reports the first use of a linker-free covalent approach for immobilizing an enzyme mixture. Adsorption from a mixture is difficult to control due to varying kinetics of adsorption, variations in the degree of unfolding and competitive binding effects. We show that surface activation by plasma immersion ion…
We have studied the influence of three different fullerene derivatives on the charge generation and recombination dynamics of polymer/fullerene bulk heterojunction (BHJ) solar cell blends. Charge generation in APFO3/[70]PCBM and APFO3/[60]PCBM is very similar and somewhat slower than charge generation in APFO3/[70]BTP…
Electron density of states (DOS) and recombination kinetics of bulk heterojunction solar cells consisting of a poly(3-hexylthiophene) (P3HT) donor and two fullerene acceptors, either [6,6]-phenyl-C 61 -butyric acid methyl ester (PCBM) or 4,4′-dihexyloxydiphenylmethano[60]fullerene (DPM 6 ), have been determined by mea…