In this work we have evaluated the dielectric properties of Poly Vinylidene fluoride (PVDF) thin films thickness (≈20 μm) as a function temperature from 40–70° C and frequency varying 500 Hz to 100 kHz respectively for Al‐Al Cu‐Cu electrode configuration. The constant values increases with increase in temperature. A broad peak is found at around (70±5)° C. maximum value losses were attributed phase transition polymer. variation loss tangent suggest net effect some internal field within...

Surface enhanced Raman spectroscopy (SERS) is a promising molecular imaging modality capable of simultaneously detecting multiple biomarkers. With the biocompatibility and functionalizability Au, Au-nanoparticle based tags possess potential for in vivo SERS cancer biomarker detection. Here, we report large scale synthesis new type Au nanoparticles, Porous Hollow Nanoparticles (PHAuNPs), demonstrate their application as tags. PHAuNPs feature sub-20 nm porous shell 50 void core. Such unique...

.In this paper, we consider 3-D Navier–Stokes equations with almost axisymmetric initial data, which means that by writing \(\boldsymbol{u}_0 =u^r_0\boldsymbol{e}_r+u^\theta _0\boldsymbol{e}_\theta +u^z_0\boldsymbol{e}_z\) in the cylindrical coordinates, then \(\partial _\theta u^r_0,\,\partial u^\theta _0\) and u^z_0\) are small some sense (recall these three quantities vanish). Then additional smallness assumption on \(u^\theta , prove global existence of a unique strong solution...

Elevated CA-125 levels, polyserous effusions (such as pleural effusion, ascites, etc.) in young women with systemic lupus erythematosus (SLE) may signal pseudo-pseudo Meigs’ syndrome (PPMS), after excluding other causes. We describe a 32-year-old SLE patient recurrent bilateral and unexplained hypercalcemia for 10 months. Extensive evaluations revealed no infections or tumors. Cytokine analysis showed elevated interleukin (IL) especially IL-6 effusion. Treatment immunosuppressive therapy...

Purpose The purpose of this paper is to investigate the impact mechanical vibration on heat transfer and pressure drop characteristics semicircular channel printed circuit exchangers (PCHEs), while also establishing correlations between parameters thermal performance. Design/methodology/approach By combining experimental numerical simulation methods, coefficient supercritical carbon dioxide (S-CO 2 ) in a with diameter mm under conditions were studied. Reinforce research by conducting...

Tensile strength of the viscose fibers is significantly influenced by environment moisture. In this paper, single-fiber tester and single-yarn were adopted to test fiber filament with different moisture contents. The results showed that property was decreased after absorption. When content yarn increases, improved gradually increments tend be stable.

Fibers extracted from Kudzu have unique anti-bacterial, anti-inflammatory functions, and are promising to be fabricated into skin-care textiles. The effective way in de-gumming of the kudzu is alkali-oxidation process. Firstly, an optimized process was proposed consideration three parameters including concentration NaOH H 2 O immersing time. residual pectin content tensile properties fiber were tested characterize retting degree. best routine is: 5% NaOH, 4% hydrogen peroxide, treating for 3...

In order to investigate the static pressure loss of maize deep-bed drying related ratio air flux grain mass, experiments based on theory thermal engineering and were engaged in. These conducted ventilation test stand indicate relationship between loss, depth bed, ventilative dimensions mass. The investigation results that during drying, increases increased mass with constant bed depth. good linear was indicated. With control dimensions, decreased it will dramatically when is small enough. To...

Various heat treatment conditions with temperature scans of 300-700 °C, and annealing time 1-4 hours were adopted in the Ti-49.5at.%-Ni shape memory alloy ultra thin wires. The mechanical hysteretic curves crystal morphology obtained by tensile-recovery testing scan electric microscopes (SEM). result shows that effect Ni-Ti first decline after rising increases. Alloy 500°C, presents best. Time is not a significant factor for treatment.

For the UUV heading control, linear PD control is a simple and effective strategy, however, under most circumstances too large initial torque output often provided to rudder, maximum rudder can bear limited, which thus making increase of controller parameters as further improve effects unavailable. In this paper, an adaptive robust for system designed avoid excessive torque. The computer simulation demonstrated that eliminate external disturbance. Furthermore, experiment in Lake shows...

Concerning the nonuniformity problem when sampling in current single grain moisture on-line inspection devices, this paper designed a new device by analysing physical property parameters of grains. The design is optimized combining computer mode and experiments. In condition ensuring sampling, fixed structure rollers for South grains North-east roller groove length 18mm, width 2.5mm, depth 3mm. 15mm, 4mm, 4mm.

The structure analysis of extremely thin thermally grown SiO2 (< 25 Aå) indicates that most silicon atoms share two the four tetrahedrally-coordinated oxygen with adjacent atoms. Molecular mechanics simulation single chain tetrahedrons is presented. oxide film composed close-packed short chains perpendicular to Si substrate. Diffusion experiment an acid vapor through non-oxide polyhydroxystyrene films de-convolutes prototropic states fluoresceinamine monolayer resemble change intermediate...

The paper analyses and studies the feasibility of fountain which replaces cooling tower. we think landscape-type is used for treating water could not only reduce electricity consumption cooling-water pump tower, but also can beautify environment. Then it sets one projects in Anhui, a central air conditioning system as an example, it. Finally puts forward concrete implementation plan replace