Materials Literature
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A bola-phospholipid probe, carrying a tetrafluorophenylazido chromophore in the middle of the transmembrane diacyl chain, was synthesized and characterized with a view to studying biomembranes by a photolabeling approach. This probe shows the advantageous stability of bola-lipids in giant vesicle formation alongside e…
The reinforcement distribution of metal matrix composites (MMCs) plays an important role in low cycle fatigue. Thus, it is essential to study the effect of reinforcement clustering on the crack initiation mechanism of MMCs. In this study, the effect of reinforcement clustering on the microcrack initiation mechanism in…
Large-area reduced graphene oxide (rGO) is demonstrated to emit sound for the first time. The whole device is flexible. The sound emission from rGO has a linear relationship with frequency in wide sound range (1 kHz ∼ 50 kHz). It is suggested that the physic mechanism is fundamentally different from conventional louds…
This paper explains the basic principles related to design prediction for stress-and-strain state of load-bearing structures taken into account the stage-wise closing of the load-bearing structures system and changing the stiffness properties for members of the design model, external constraints, time histories of the…
A new mixed finite element method is proposed and analyzed for simulating two-phase droplet motion in a microscale device driven by electrowetting-on-dielectric. The new feature of the method is that the finite element scheme is based on a weak formulation of the problem which includes the position of the moving inter…
The assembly of cubic hollow microcapsules in an aqueous buffer solution had been studied in comparison with the traditional spherical microcapsules with both microcapsules assembled from identical components and having identical surface charges. We observed that the cubic microcapsules mainly form the highly compacte…
This paper is concerned with the development of approaches for assessment of core debris heat transfer and Control Rod Guide Tube (CRGT) cooling effectiveness in case of a Boiling Water Reactor (BWR) severe accident. We consider a hypothetical scenario with stratified (metal layer atop) melt pool in the lower plenum.…
The hydrolysis of borohydride salts represents one of the most promising processes for the generation of high purity molecular hydrogen under mild conditions. In this work we show that the sodium borohydride hydrolysis exhibits a fingerprinting periodic oscillatory transient in the hydrogen flow over a wide range of e…
This paper presents a new concept to implement a tunable filter metamaterial with dual negative refraction composed of ferrite slabs and metallic resonators, including split-ring resonators (SRR), and short wire pairs. The ferrite slabs under an applied magnetics bias provide one magnetic resonance frequency band and…
Gradient copolymers of styrene–methyl acrylate (poly(St-grad-MA)) were synthesized by semi-batch organostibine-mediated controlled/living radical polymerization (SBRP) in bulk at 60 °C. The number-average molecular weights of the copolymers increase linearly with the total conversion, and the polydispersity indices of…
In tunnel construction, workers exposed to dust from blasting, gases, diesel exhausts, and oil mist have shown higher risk for pulmonary diseases. A clear mechanism to explain how these pollutants determine diseases is lacking, and alveolar epithelium's capacity to ingest inhaled fine particles is not well characteriz…
The use of an integrative analytical approach allowed us to establish the intrinsic solid state stability of bethanechol chloride (BC), an active pharmaceutical ingredient used in the treatment of urinary retention. First, the crystal structure of the monoclinic form has been described using single crystal X-ray diffr…
Bis-ketal-protected diethyl galactarate was condensed with different diamines to prepare sugar-based polyamides. Ketal-protected polyamides, which are soluble in organic solvents, were deprotected with 90% trifluoroacetic acid to yield water insoluble materials. FTIR, NMR, GPC, MALDI-TOF, ESI and TGA techniques were u…
Herein we report the characterization and photoelectrochemical behavior of nanocrystalline TiO2 films modified with some alizarin derivatives. Particularly, alizarin complexone (3-[N,N-bis(carboxymethyl)-aminomethyl]-1,2-dihydroxyanthraquinone) and its Fe(II) and Fe(III) metal complexes have been examined. Based on UV…
This present work deals with the design of a set of dies employed to manufacture a connecting rod by forging a billet of nanostructured aluminum alloy. Nanostructured parts exhibit excellent mechanical properties compared to the non- nanostructured alloys. Moreover, the forgeability of nanostructured materials is high…
The reactions of a zirconium salt with 1,2,4,5-benzenetetracarboxylate (btec), bathophenanthroline (Bphen) and thiocyanate ions were synthesized and studied by changing the mole ratio, the order of reactant and their pH. It is found that the coordination mode of btec acid depends on the control of reaction conditions.…
The paper presents three new ball forming methods which have been developed at Lublin University of Technology, Poland. These methods include: cross-wedge rolling (CWR), multi-wedge cross rolling (MWCR), and cross rolling with upsetting (CRWU). The processes have been discussed using an example of a simultaneous formi…
A phenomenological theory is presented to describe the isotropic micellar to lamellar (I–LD) phase transition in lyotropic liquid crystals. The model free energy is written in terms of the coupled order parameters including the micellar concentration. The conditions for the I–LD phase transition and the stability cond…
To investigate the multi-functional ceramics with both high permittivity and large nonlinear coefficient, we have prepared rare-earth Tb -and- Co doped ZnO and TiO 2-rich CaCu3Ti4O12 (TCCTO) powders by chemical co-precipitation and sol–gel methods respectively, and then obtained the TCCTO/ ZnO composite ceramics, sint…
Intracellular delivery is a prerequisite for the efficacy of many pharmaceutical proteins. Herein, vitamin B6 (pyridoxal-5′-phosphate, PLP) functionalized calcium phosphate (CP) is used as the bio-recyclable nanocarrier for delivery of proteins into cells. Proteins could be loaded on/released from PLP-CP via formation…