Materials Literature
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For practical applications of carbon dots (CDs), a major challenge is to prevent the notorious aggregation-caused quenching (ACQ) effect. Herein, a new type of CDs (CD1) has been developed that can transform from ACQ to an enhancement of fluorescence by aggregation-induced emission (AIE). The blue fluorescence of the…
We identify states favored by Coulomb interactions projected onto the Wannier basis of the four narrow bands of the "magic angle" twisted bilayer graphene. At the filling of 2 electrons/holes per moiré unit cell, such interactions favor an insulating SU(4) ferromagnet. The kinetic terms select the ground state in whic…
Rare earth permanent magnets constitute a mature technology, but the shock of the 2011 rare earth crisis led to the re-evaluation of many ideas from the 1980s and 1990s about possible new hard magnets containing little or no rare earth (or heavy rare earth). Nd–Fe–B magnets have been painstakingly and skillfully optim…
To ensure reinforced concrete bars applications in more severe loading conditions, the contact between the steel bar and concrete must be strongly adhesive. This adhesion constitutes an important property for the use of reinforced concrete. That is why many techniques were developed with the aim of determining this pr…
Decision making for investing in a new pipeline project can be a long and costly process. This is usually due to the uncertainty and missing information regarding the interactions of parameters (e.g. brine chemistry, flow conditions or scale deposition) during internal corrosion assessment. In addition, these interact…
A combined method of the sensitivity-based and random sampling-based methodologies is proposed for efficient uncertainty quantification calculations. The proposed method is based on the control variates (CV) method, in which a mean value of a target parameter can be estimated efficiently with a help of a mockup parame…
The recycling of asphalt materials is increasing every year in the paving industry, mainly for economical reasons because it reduces the consumption of raw materials such as aggregates and asphalt binders. The use of higher contents of reclaimed asphalt pavement (RAP) is a challenge, since they are typically aged and…
The significance of this work is the direct synthesis of gold nitride films for surface plasmonic applications. Nanocrystalline gold nitride thin films were fabricated by reactive radio frequency (RF) magnetron sputtering on Phynox alloy substrates at room temperature and 250 °C for 1 and 2 h under a fixed power densi…
Two dimensional anomalous small-angle scattering measurement at K absorption edge of Mg has been successfully demonstrated for concentrated Al-Mg binary alloys and MgO nanoparticles. Enhancing the contrast between Mg-rich precipitates and Al matrix was explained by the anomalous dispersion of Mg, and anisotropic SAXS…
Abstract Aiming at exploring how high pressure processing (HPP) affects the fibrinolytic activity of fruit bromelain (FB) in vivo, the obtained FB was subjected to HPP treatment (300 MPa, 20°C for 20 min) before advanced structure was determined; then six groups of rats were fed with various dosages of enzymes (0.5–1.…
We demonstrate the polarization-dependent torque on rhombohedral calcite in an optical trap. Our precipitate technique produces regular crystals approximately 10μm on all edges. The regularity of the crystal shape makes it possible to visually identify the optical axis as well as the orientation of the polarization ax…
In the current work, poly(4-vinylpyridine) (P4VP) was grafted on a macroporous polystyrene resin via free-radical polymerization by using the pendent vinyl group. The grafting conditions such as swelling agent, initiator concentration, reaction temperature, and amount of 4-vinylpyridine (4VP) monomer were optimized, a…
Abstract Crystal and molecular structures of new triorganotin complexes have been determined via X-ray diffraction. These complexes include, among others, the second polymorph of Ph3Sn(thiocytosine), the double complex salt Ph3Sn(methimazole)2·Ph3SnCl2, and five-coordinated triphenyltin chloride with methimazole, te…
Abstract Sand particulate ingestion into modern gas turbine engines for fixed wing and vertical lift aircraft is a significant challenge for both military and civilian missions. ARL as part of a DoD funded Laboratory University Collaborative Initiative (LUCI) and Vannevar Bush Fellowship at UCSD are investigating the…
We demonstrate two broadband multispectral infrared (3.5-11.5 μm), zoom (3×) systems with focal lengths adjustable from 50 mm to 150 mm. Both systems are successful in meeting the modulation transfer function (MTF) requirement of 20 lp/mm. The difference between the two designs is that one employs novel infrared-trans…
Improving the robustness of decommissioning decision making will provide greater confidence in the decision and ensure stronger commitment to its execution. This can be achieved by putting some key principles into practice, including comparing a wide range of options against each other using a ‘decision model’ and act…
The flesh of the Pinctada radiata pearl oyster from coastal Tunisia is considered as a high source of n-3 and n-6 and its shell nacre layer is a promising osteogenic biomaterial. Fatty acid (FA) analysis showed that the major components found in total FA (TFA) were 14:0, 16:0, and 18:0 saturated FA (SFA); 16:1, 18:1,…
We study the femtosecond carrier dynamics of n-type doped and biaxially strained Ge-on-Si films which occurs upon impulsive photoexcitation by means of broadband near-IR transient absorption spectroscopy. The modeling of the experimental data takes into account the static donor density in a modified rate equation for…
Nucleosome Assembly Protein (NAP) is a highly conserved family of histone chaperones present in yeast, animals, and plants. Unlike other organisms, plants possess an additional class of proteins in its NAP family, known as the NAP1-related proteins or NRP. Arabidopsis thaliana possesses two NRP isoforms, namely AtNRP1…
Abstract An assemble‐type plate reactor was developed and its intensified heat transfer compared to that of a conventional tubular reactor in methane reforming was confirmed. This characteristic enables accurate reaction kinetic analysis because of quasi‐isothermal operation with mild pressure loss. Reduced experiment…