Abstract A method for direct numerical analysis of three‐dimensional deformable particles suspended in fluid is presented. The flow computed on a fixed regular ‘lattice’ using the lattice Boltzmann (LBM), where each solid particle mapped onto Lagrangian frame moving continuously through domain. Instead bounce‐back method, an external boundary force (EBF) used to impose no‐slip condition at fluid–solid interface stationary or boundaries. EBF added directly equation. motion and orientation are...

Marinamide (1) and its methyl ester (2) have been previously reported as pyrrolyl 1-isoquinolone alkaloids, which were produced by co-cultures of two marine-derived mangrove endophytic fungi from the South China Sea coast. Recrystallisation marinamide pyridine forms known pesticide, quinolactacide (3). Treatment 3 with iodide to afford N-methyl (4) was identified X-ray crystallography. Thus, structures 1 2 revised 4-quinolone analogues. In MTT assays, both exhibited potent cytotoxic activity...

High-strength and high-modulus epoxy resins are key elements for preparing carbon-fiber-reinforced polymer composites, which play an irreplaceable role in aerospace. In this study, five optimal systems were developed utilizing the reverse design strategy. The strategy was based on ideal resin curing agent structures offered by AI platform, rules summarized to create optimum formulation. formulations used m-phenylenediamine (MPD) as principal agent, modified with 10 wt%...

A novel, efficient and durable two-dimensional ZrP@PDA/Ag nanocatalyst for the reduction of 4-nitrophenol.

Background: Dosimetry has been used to help identify when empiric dosages of 131-I treatment for suspected metastatic well-differentiated thyroid carcinoma (WDTC) may be increased or should decreased, but dosimetry is complex, and easier approaches would useful. The three objectives this study were assess the utility percent whole-body retention at 48 hours (%WBR48hr) in identifying patients with WDTC whom therapeutic prescribed activity might increased/decreased, evaluate thresholds...

Aliphatic polyesters and polycarbonates such as polylactide (PLA), polycaprolactone (PCL) poly(propylene carbonate) (PPC), are well known biodegradable, biocompatible environmental-friendly polymeric materials, which have been widely used in various areas ranging from packaging to biomedical materials. The production usage of biodegradable plastics can greatly alleviate the safety environmental concerns because fairly short degradation periods low toxicity catabolite. During process...

A recently developed particle-level numerical method is used to simulate flexible fibre suspensions in Newtonian simple shear flow. In this method, the flow computed on a fixed regular ‘lattice’ using lattice Boltzmann where each solid particle, or case, mapped onto Lagrangian frame moving continuously through domain. The motion and orientation of are obtained from dynamics equations. effect stiffness rheology investigated relation for relative viscosity obtained. We show that (bending...

The noise produced by rotating systems such as fans and turbo machines is of growing importance in the academic engineering communities.The prediction understanding physical mechanisms associated with generation are required order to develop innovative solutions able efficiently reduce radiated acoustics levels.The flow-induced related devices various complex, one them blade tip flow.The flow noise, or leakage particularly important for free-tip configurations, which induced pressure...

Abstract A CO 2 ‐based thermoplastic elastomer, poly(propylene carbonate)‐multiblock‐polyamide6 (PPC‐ mb ‐PA6) copolymer, was constructed through coupling amorphous/soft PPC blocks with crystalline/hard PA6 blocks. The PPC‐ ‐PA6 copolymers different block length pairs were designed and synthesized, then fully characterized by structural, thermal, mechanical analysis. proton nuclear magnetic resonance ( 1 H‐NMR), diffusion ordered spectroscopy (DOSY), heteronuclear multiple‐bond correlation...

The thrust of this project was to evaluate commercial conformal encapsulation candidates for low cost aerospace applications. candidate coatings evaluated in study included silicone elastomers, epoxies, and Parylenes with bi-layer or tri-layer designs. Properties characterized mobile ion permeation moisture ingress resistance, interfacial adhesion variation through thermal shock cycling 85/spl deg/C/85% RH aging. Surface Insulation Resistance (SIR), Triple Track (TTR) die shear strength were...

Abstract Fibre-level computer simulation is carried out to study the rotational diffusion and structural evolution of semidilute suspensions non-Brownian, rigid-rod-like fibres under shear flow in a Newtonian fluid. The analyses use hybrid approach where lattice-Boltzmann method coupled with external boundary force method. probability distribution orbit constant, $p({C}_{b} )$ , regime predicted this paper emphasizes assessment characteristics rotary model – anisotropic nature (Koch, Phys....

A hydroxamate siderophore, neoaspergillic acid (1), and a red pigment, ferrineoaspergillin (2) which is an Fe(III) complex of 1, were produced by co-cultures two epiphytic fungi from rotten fruit the mangrove Avicennia marina South China Sea, new Cu(II) designated as cuprineoaspergillin (3), was also prepared treatment 1 with cupric acetate. All compounds (1-3) characterized physical chemical techniques, including 1H NMR, ESIMS, photoelectron energy spectra. In bioassays, 1-3 showed...

Supported nano-silver composites, famous for large specific surface area, good dispersibility and high catalytic activity, have been widely used in chemistry chemical engineering, biomedicine new materials. In this paper, we report recent research progress on supported composites as reviewed from preparation techniques (chemical reduction, physical reduction in-situ formation), types of supporters (organic inorganic) anti-microbial/catalytic activity. Firstly, the principles merits/demerits...

The steel plate‐concrete structure, with its advantages of modular construction, good seismic capacity, and strong impact resistance, has been gradually replacing the reinforced concrete structure in containment vessel internal workshop nuclear power plants recent years. In this study, out‐of‐plane single‐point loading test parametric finite element simulation analysis were conducted on five wall slab specimens different stud spacings, shear span ratios, contents. Results showed that under...

Modification of the aerodynamic characteristics axisymmetric nacelles with use tangential Coanda jets is studied. It demonstrated that in leading edge (lip) region nacelle can increase entrainment air flowing into nacelle. also shown trailing laterally spread jet-fan exhaust, and may lead to a reduction exhaust velocity downstream. The jet slot position was found have significant effect on flow field. concluded be useful altering improving performance has been designed for cruise conditions.

Prosthetic heart valves have been used for over 50 years to replace diseased native but still lead severe complications such as hemolysis, platelet aggregation, and thromboembolic events. The most widely implanted design is the bileaflet mechanical valve (BMHV). Most modern BMHV designs better flow hemodynamics blood damage performance than their earlier-generation counterparts. However, element trauma events remain major of current designs. These problems linked caused by non-physiological...

Bileaflet mechanical heart valves (BMHVs) have been widely used to replace native valves. Unfortunately, the design of bileaflet MHVs produces flow fields that may cause damage blood elements, especially at hinge area. The objectives this study are analyze properties around area and through valve, further understand provide improved designs reduce adverse hemodynamic effects platelet activation elements. An important part improvement is produced by different valve designs, how surrounding...