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1.
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Permeable reactive barrier for groundwater remediation 总被引:4,自引:0,他引:4
R. Thiruvenkatachari S. Vigneswaran R. Naidu 《Journal of Industrial and Engineering Chemistry》2008,14(2):145-156
This article aims to provide an overview of the upcoming technology of permeable reactive barriers for groundwater remediation. A comprehensive list of references and web-links are also provided for further in-depth understanding. A brief discussion on the Australian perspective on this emerging technology is also included. 相似文献
3.
D. Subbaram Naidu 《国际强度与非线性控制杂志
》2007,17(12):1155-1156
》2007,17(12):1155-1156
4.
Tejraj M. Aminabhavi Lakshmi C. Shetty B. Vijaya Kumar Naidu Nadagouda N. Mallikarjuna Vanajakshi M. Hanchinal 《应用聚合物科学杂志》2004,94(3):1139-1150
Sorption, diffusion, and swelling characteristics of sodium alginate and its blend membranes with poly(vinyl alcohol) were investigated for water–acetic acid mixtures by using a gravimetric method at 30, 40, and 50°C. The membranes were characterized by X‐ray diffraction and Fourier transform infrared techniques. Concentration‐independent diffusion coefficients were obtained by applying Fick's relationship before completion of equilibrium sorption. Permeation coefficients were calculated from sorption and diffusion coefficients. Concentration profiles of liquids were computed considering the sheet geometry for the membrane by solving Fick's equation under suitable boundary conditions. Arrhenius activation parameters were computed for the transport processes. Experimental results and calculated quantities were discussed to understand membrane–solvent interactions. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 94: 1139–1150, 2004 相似文献
5.
M. D. Kurkuri J. N. Nayak M. I. Aralaguppi B. V. K. Naidu T. M. Aminabhavi 《应用聚合物科学杂志》2005,98(1):178-188
Blend membranes of poly(vinyl alcohol) (PVA) and sodium alginate (NaAlg) were prepared by solution casting and crosslinked with glutaraldehyde (GA). Polymer blend compatibility was studied in water by measuring solution viscosity at 30°C. From the viscosity data, interaction parameters were determined to find the blend compatibility. Thickness of the membranes ranged between 35 and 40 μm. Circular disc‐shaped samples were cut from the thin membranes to perform gravimetric sorption experiments in water + 1,4‐dioxane and water + tetrahydrofuran mixtures at 30°C. Diffusion coefficients were calculated using Fick's equation. Concentration profiles of liquids were computed by solving Fick's equation under suitable boundary conditions. Diffusion coefficients show a dependence on the composition of the blends as well as composition of binary mixtures. A correlation was attempted between concentration profiles and diffusion coefficients of the transporting liquids. Degree of swelling and sorption coefficients were calculated from the gravimetric sorption data. Sorption kinetics was studied using an empirical equation to understand the nature of sorption–diffusion anomalies. Membrane selectivity for water + 1,4‐dioxane and water + tetrahydrofuran mixtures were calculated from the pervaporation experiments. A correlation between sorption and membrane selectivity was attempted. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 98: 178–188, 2005 相似文献
6.
Betal Atanu Bera Jayanta Alam Mahfooz Gandi Appala Naidu Sahu Satyajit 《Journal of Computational Electronics》2022,21(1):227-234
Journal of Computational Electronics - The strain- and electric field-dependent electronic and optical properties of monolayer GaInS2 have been calculated using density functional... 相似文献
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Madeneni Madhava Naidu P. V. Sujith Kumar B. N. Shyamala Guruguntla Sulochanamma Maya Prakash M. S. Thakur 《Food and Bioprocess Technology》2012,5(2):527-532
Vanilla planifolia Andrews is a perennial tropical vine and is an orchid grown for its pleasant flavor. There is an increasing trend world over
for using natural flavors. Vanilla being an important food flavoring ingredient, the demand for natural vanilla extract is
increasing. Hence, the aim of the present study was to prepare vanilla extract from green beans without going through the
elaborate and time-consuming conventional curing process. Vanilla beans after size reduction were mixed in a suitable proportion
with tea leaf enzyme extract (TLEE) and incubated to facilitate action of enzymes on vanilla flavor precursors. The beans
mix was squeezed, and the filtrate was treated with ethanol to extract the vanilla flavor. TLEE-treated extracts had higher
vanillin content (4.2%) compared to Viscozyme extract (2.4%). Also, it had higher intensity of vanilla flavor, sweet, and
floral notes. Further, electronic nose analysis confirmed the discrimination between extracts. It was concluded that the use
of TLEE is very much useful to obtain higher yield of vanilla extract and superior quality vanilla flavor, which avoids the
traditional laborious and time-consuming curing process. 相似文献
10.
A compact slot antenna with an overall dimension of 30 × 30 × 1.6 mm3 is proposed for dual band applications. The radiating element is a hexagonal shape patch which protrudes from a Co‐Planar Waveguide (CPW) feed into a step shape slot. The slot is basically rectangular in shape and is extended by inserting rectangular cuts of different sizes on the ground plane around it. The ultrawide impedance bandwidth is achieved using asymmetric feed line along with extended rectangular cuts around the slot. For realizing the second band for personal communication system applications (near 1.9 GHz), a metallic stub of quarter wave length is attached at the top of the slot. The measured impedance bandwidth (for S11 < ?10 dB) is 110 MHz (1.86–1.97 GHz) for the first band and 9 GHz (3.0–12.0 GHz) for the second band. The antenna is further characterized by omnidirectional radiation patterns in the H‐plane, dumb‐bell shape radiation patterns in the E‐plane and a peak gain of 3–5 dBi over the ultrawideband. All the measured results are found to be in good agreement with the simulated results. © 2014 Wiley Periodicals, Inc. Int J RF and Microwave CAE 25:243–254, 2015. 相似文献