查看更多>>摘要：Photocatalysis is viewed as perhaps the best-progressed treatment measures in eliminating numerous dangerous natural toxins from wastewater. It enjoys numerous benefits, however some downsides are: (i) Fast photogenerated electron-hole recombination productivity, (ii) they restricted noticeable light reaction capacity, (iii) low specific surface region, and (iv) the expense of reagents utilization. To improve the economy of the process, it is likewise needed to expand the catalyst's effectiveness. Consequently, there is an extraordinary requirement for the improvement of elite catalysts. This mini-review survey addresses the basics and uses of photocatalytic materials on metal tungstate-based nanocomposites. The mini-review shows how metal tungstate-based nanocomposites can help take care of ecological issues. This mini-review also expected survey gives outlines, synthesis, characterizations, and exploration discoveries in the field of metal tungstate-based nanocomposites for photocatalytic applications in the future examination.
查看更多>>摘要：The advancements in magnetic nanoparticle mediated hyperthermia give so many optimistic and fruitful results that make it a promising and complementary approach for the existing treatment modalities of cancer. This thermotherapy is gaining wide acceptance among the medical community compared to the conventional treatment methods. The former provides a local heat generation in the malignant tumor cells and remains non-invasive to the adjacent healthy cells. The increased heating efficiency of magnetic nanoparticles and the control of local therapeutic temperature are the main challenges of hyperthermia. Superparamagnetic Iron Oxide nanoparticles have been intensively studied and dominating in magnetic hyperthermia. Recently, many researchers successfully demonstrated high heating efficiency and biocompatibility of a wide variety of magnetic metal nanoparticles and proposed as the most promising alternative for traditional iron oxides, which opens up a new avenue for magnetic metal nanoparticles in magnetic hyperthermia. The review presents the recent advancements that occurred in the field of metal nanoparticle mediated magnetic hyperthermia. The theory underlying heat generation, synthesis methods, biofunctionalization, Specific Absorption Rate studies, challenges and future perspectives of magnetic metal nanoparticles are presented. This will inspire more in-depth research and advance practical applications of metal nanoparticles in magnetic hyperthermia.
Anil B. PatilUmesh. J. TupeVikas V. DeshmaneArun V. Patil...
8页
查看更多>>摘要：This paper reports the development of simple and economical reduced graphene oxide (rGO) based screen-printed electrodes (SPE) for five basic taste sensing applications. Twenty different test solutions for the five tastes of salty, sour, sweet, umami, and bitter at 1 ppm, 10 ppm, 100 ppm, 1000 ppm concentration levels were tested with the fabricated SPEs. From experimental results, electrical signals generated between the electrode and test solution interface were measured using the potentiometric method. Satisfactory potentiometric responses of SPEs to different ppm concentrations for each sample were used to analyze the sample data. Histogram using the statistical tool was used to analyze the changes in the conductivity response. A multivariate Principal Component Analysis (PCA) statistical tool correlated using loading plots between variables and factors of all the five basic tastes. The plot showed the interrelation between variables and test samples. The obtained experimental results from these rGO based SPEs make them suitable for their use in taste sensing applications such as for any taste disorder disability, food-producing industry, pharmaceutical industries, etc.
查看更多>>摘要：In this work, a simple but versatile sensing system for very accurate sensing of liquid level and liquid density is presented. The sensor works based on basic strain sensitivity of Fiber Bragg Grating (FBG) and principle of liquid obeying Archimedes' law of buoyancy. In this system, a cylindrical shaped mass suspended from a Fiber Bragg Grating and partially immersed in the liquid to be sensed. If the liquid level in the container or liquid density varies, that change the up thrust on the suspended mass and load on the Fiber will be changed accordingly. The change in the load on Fiber changes strain on the FBG and the reflected Bragg wavelength also changes. The proposed device with proper calibration should be able to carry out real time and nonstop liquid level and liquid density measurements. A mathematical analysis of the system considering liquid properties and geometrical structure of the suspended mass is presented here. Sensitivity of the system for liquid level monitoring is also reported. Achieved results shows the path for the utilization of the proposed sensor system for precise liquid density measurement and liquid level sensing in very large storage tanks used for commercial/residential applications.
A. SenthamizhanK. SambathkumarS. NithiyananthamA. A. Alagiriswamy...
6页
查看更多>>摘要：Slow evaporation was used to successfully generate single crystals of pure and La~(3+) doped Lalanine acetate from aqueous solution. The structural, vibrational, chemical analysis carried out through XRD, UV, FTIR with FTRaman Analysis. The Nd: YAG laser was used to confirm and estimate the sample's Second Harmonic Generation (SHG). The growing crystal's laser damage threshold was also discovered. Thermogravimetic (TG) and Differential theromogravimetric (DTA) studies were used to measure the thermal stability of the formed crystal. The generated LAIA crystals were also subjected to dielectric and photoconductivity tests. The dopant has boosted the efficiency of the L-alanine acetate crystal, according to nonlinear optical studies.
查看更多>>摘要：This research evaluates the impact of mass loading/perturbations on the characteristics of a micro-size cantilever bio-mass sensor. Design techniques are proposed through the application of the commercial, finite element modelling, and simulation package, i.e., COMSOL multiphysics. A finite element model and resulting simulations are provided for both the static and dynamic operation of a bio-mass sensor. In static mode, the obtained result provides the structural stress, strain, and displacement of a sensor against several mass loading conditions (point, edge, and boundary). In dynamic mode, shifts in the resonant frequencies of the sensor as a function of mass loading are obtained, which is another viable output of the biosensor. The proposed design and modelling techniques offer a guide in the rapid design and development of precise and efficient biomedical instrumentations and/or products.
Arjun SatheeshA. A. AlagiriswamyS. DevanandS. Nithiyanantham...
5页
查看更多>>摘要：Electrospinning of dispersions with higher viscosity and limited flow may be carried out, based on the solvent assisted coaxial technique, where the flow of the core dispersion is supported by a free flowing sheath solvent. In the present work, the sheath solvents used are chloroform, toluene and dimethyl formamide and we discuss the fiber formation of Poly Methyl Methacrylate (PMMA) (dispersion-25 wt%). PMMA dispersed in chloroform is taken as the core solution and the sheath is pure solvent. The In-Situ effect of different sheath solvents in fiber formation at two different tip to collector distances are studied. The fibers formed are subjected to SEM analysis and the characteristics are analysed. The fiber formation of high viscos polymer dispersions makes the same materials subjectable to electrospinning and further applications.
查看更多>>摘要：Mine fire is a very common and serious problem in mining engineering, and often causes casualties, equipment losses, mine shutdown, resource destruction, and even sulphide dust explosion. So it is of vital importance to monitor mine fire in the engineering projects in order to prevent economic losses and casualties. Actually, we have done a lot of engineering projects on mine fire monitoring and have seen a variety of monitoring systems in underground metal mines. Unmodestly speaking, we are experts in this field, therefore, in this viewpoint paper, we mainly introduce a few mine fire monitoring methods and technologies according to our practical engineering experience, especially the ZigBee WSN technology and sensors. And in the end of the paper, we have explained "Why is ZigBee WSN technology the best choice in the fire monitoring in the underground metal mines at the present stage?".
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