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551.
Quantitative and qualitative studies on the bacteriological quality of Indian white shrimp (Penaeus indicus) stored in dry ice 总被引:1,自引:0,他引:1
Indian white shrimp (Penaeus indicus) stored in dry ice at the 1:1 ratio were found to be organoleptically suitable for consumption when they were stored for 24 h without reicing. Shrimp stored in water ice at the 1:1 ratio (as control) were acceptable up to 18 h. Shrimp stored in a combination of dry ice and water ice at the ratio of 1:0.2:0.5 were also found to be acceptable up to 24 h. Total bacterial load ranged from 10(6) to 10(9) cfu g(-1), while total psychrophiles ranged from 10(3) to 10(6) cfu g(-1). Total lactics were found in the levels of 10(2)-10(6) cfu g(-1). H(2)S producers were from 10(3) to 10(5) cfu g(-1). Lowest temperature of -4.8 degrees C was observed in shrimps stored in dry ice at 1:1 ratio. Bacterial flora associated with fresh raw shrimp were Aeromonas, Pseudomonas, Vibrio, Flavobacterium and Serratia. Aeromonas constituted 38% of the flora in raw shrimp. Flavobacterium (43%), Pseudomonas (47%) and Pseudomonas (38%) were the dominant bacterial flora in the shrimp stored in dry ice at 1:1 ratio, in the combination package, and in water ice at 1:1 ratio, respectively. 相似文献
552.
Sung-Min Won Eunju Park Jin-Ju Jeong Raja Ganesan Haripriya Gupta Yoseph Asmelash Gebru SatyaPriya Sharma Dong-Joon Kim Ki-Tae Suk 《International journal of molecular sciences》2021,22(15)
In chronic liver disease, the causative factor is important; however, recently, the intestinal microbiome has been associated with the progression of chronic liver disease and the occurrence of side effects. The immune system is affected by the metabolites of the microbiome, and diet is the primary regulator of the microbiota composition and function in the gut–liver axis. These metabolites can be used as therapeutic material, and postbiotics, in the future, can increase or decrease human immunity by modulating inflammation and immune reactions. Therefore, the excessive intake of nutrients and the lack of nutrition have important effects on immunity and inflammation. Evidence has been published indicating that microbiome-induced chronic inflammation and the consequent immune dysregulation affect the development of chronic liver disease. In this research paper, we discuss the overall trend of microbiome-derived substances related to immunity and the future research directions. 相似文献
553.
ABSTRACT Ambient air oxidation leads to lower Fischer assay oil yields and often lower process yields from retorting of eastern oil shales. Slight changes in the kerogen and mineral matter of the oil shale and in its pyrolysis products, both liquid and gaseous, were evident following autoxidation. Experimental observations suggest that the hydrogen deficiency of eastern kerogen, as compared to western kerogen, makes its synfuel potential (by Fischer assay) a more sensitive function of the degree of oxidation. A better yield of oil from oxidized eastern oil shale could be obtained by dissolving away sulfates and other water soluble oxidized materials prior to retorting. The air oxidation of pyrite was demonstrated by SEH, and addition of iron(II) sulfate was shown to reduce assay oil yields. Such observations suggest that combusted shale may not always be a suitable heat transfer agent for atmospheric pressure retorting applications. 相似文献
554.
The present work deals with removal of hexavalent chromium from synthetic effluents in a batch stirred electrocoagulation cell with iron-aluminium electrode pair coupled with adsorption using granular activated carbon (GAC). Several working parameters such as pH, current density, adsorbent concentration and operating time were studied in an attempt to achieve higher removal capacity. Results obtained with synthetic wastewater revealed that most effective removal capacities of chromium (VI) could be achieved when the initial pH was near 8. The removal of chromium (VI) during electrocoagulation, is due to the combined effect of chemical precipitation, coprecipitation, sweep coagulation and adsorption. In addition, increasing current density in a range of 6.7-26.7mA/cm2 and operating time from 20 to 100min enhanced the treatment rate to reduce metal ion concentration below admissible legal levels. The addition of GAC as adsorbent resulted in remarkable increase in the removal rate of chromium at lower current densities and operating time, than the conventional electrocoagulation process. The method was found to be highly efficient and relatively fast compared to existing conventional techniques. 相似文献
555.
K. Manimaran M.V. Ananth M. Raju N.G. Renganathan M. Ganesan G. Nithya 《International Journal of Hydrogen Energy》2010
Cobalt coatings were applied over lanthanum process-rich MmNi2.38Al0.82Co0.66Si0.77Fe0.13Mn0.24 alloy particles by an autocatalytic electroless deposition process. Electrode characteristics such as electrochemical capacity and cycle life were studied for the uncoated and coated alloys. The structure and morphology of the surface modified samples were characterized with XRD and SEM/EDAX techniques. The cobalt coating forms a thin layer on the surface of the core material and the coated alloys exhibit a 15% improvement in performance over the bare alloy. A comparison of the electrochemical impedance behaviour of the bare and cobalt-coated metal hydride electrodes at different states-of-charge reveals that the relaxation period is distinct for different SOCs. The cobalt microencapsulations influence the apparent activation energy of the dehydriding process. The calculated equivalent rate constant (keq) values confirm the improvement in reversibility for the cobalt-coated alloy as compared to the bare alloy. 相似文献
556.
Subhashree Das Priyanka Priyadarshini Devarajan Alagarasan Selvaraj Vardhrajperumal Rajamanickam Ganesan Ramakanta Naik 《Journal of the American Ceramic Society》2022,105(5):3469-3484
The tellurium (Te)-doped Ag60-xSe40Tex (x = 0%, 5%, 10%, 15%) thin films of thickness ∼800 nm were prepared from the bulk sample by thermal evaporation method on a glass substrate. The X-ray diffraction study revealed the amorphous nature of the films whereas the change in vibrational modes was noticed from the Raman spectroscopy. The composition of the films was verified by energy dispersive X-ray analysis and the surface morphology pictures were taken by field emission scanning electron microscopy and atomic force microscope. The changes in optical properties (linear and non-linear) with Te addition were studied from UV-Visible spectroscopy data and related empirical formulas. The addition of Te reduced the bandgap values significantly and the reduction in transmission resulted in the increase of the linear refractive index. The decrease in optical bandgap is due to an increase in disorder while the width of the tail in the gap increased with Te%. The optical density, dispersion energy, extinction coefficient, carrier concentration, dielectric constant, oscillator wavelength increased while the oscillator energy, oscillator strength, optical electronegativity decreased with Te content. The electrical susceptibility increased with Te content. The non-linear susceptibilities and the non-linear refractive index increased which is good for the nonlinear photonic devices. 相似文献
557.
A. Parida D. Alagarasan R. Ganesan S. Vardhrajaperumal R. Naik 《Journal of the American Ceramic Society》2022,105(10):6217-6231
The current paper reports the changes in the structural and optical properties of antimony-doped tin sulfide ternary (SbxSn1-xS) (x = 0, 0.05, 0.1, 0.15, 0.2) thin films synthesized by the thermal evaporation technique on a glass substrate. Structural characterization techniques such as X-ray diffraction and Raman spectroscopy of the prepared sample revealed that the thin films are crystalline in nature. The nanoflake-like structure was found from the surface morphological analysis performed by field emission scanning electron microscopy. The concentration of the compositional elements was confirmed from the energy dispersive X-ray analysis. The linear and nonlinear optical parameters were calculated by using the transmission data obtained from UV–vis spectroscopy in the range of 800–1100 nm. The optical measurements showed an increase in transmittance and shifting of the absorption edge. The optical bandgap increased (1.239–1.378 eV) and the refractive index decreased with the increase of Sb concentration, satisfying the Moss rule. The nonlinear susceptibility and the nonlinear refractive index (n2) decreased with Sb content. The changes in both linear and nonlinear parameters by varying the antimony doping concentration could be helpful for controlling the optical properties of SbxSn1-xS thin films and could be a suitable candidate for many photonics and optoelectronic applications. 相似文献
558.
Alagarasan Devarajan Hegde S. S. Varadharajaperumal S. Arun Kumar K. Deva Naik R. Panjalingam Sathiya Priya Massoud Ehab El Sayed Ganesan R. 《Journal of Materials Science: Materials in Electronics》2022,33(8):4794-4805
Journal of Materials Science: Materials in Electronics - Tin sulfide (SnS) thin films were deposited at room temperature (RT) by thermal evaporation method and subsequently annealed at... 相似文献
559.
Shah Ankit Ganesan Rajesh Jajodia Sushil Cam Hasan 《International Journal of Information Security》2022,21(3):637-651
International Journal of Information Security - The level of operational effectiveness (LOE) is a color-coded performance metric that is monitored by the cybersecurity operations center (CSOC). It... 相似文献
560.