Antimicrobial Activity Of New Synthetic Derivative Of Sesamol And Sesamum Indicum Seeds Extract Against Meningitis Causing Bacteria

The facts over S. aureus and E. coli to cause meningitis, and the antimicrobial potential of Sesame seeds and Sesamol were motivation for present study to compare the antibacterial potential of new synthetic derivativeof Sesamol (SDS) and Sesamum indicum seeds extract against meningitis causing bacteria (MCB). Present study involved synthesis of SDS and preparation of sesame seeds extract. The SDS was characterized using ATR-IR, 1H-NMR and Mass spectrometric data. Both SDS and sesame extract were tested for the inhibitory potential against MCB, namely: S. aureus and E. coli. Among both, the SDS exhibited higher inhibitory potential when compared with sesame extract. Based on the results present study concludes that SDS possess high inhibition potential against MCB and recommends that SDSmust be further evaluated for its clinical significance

Impersonation Attack Detection in VANET Using Kalman Filter and Watermarking

VANET is a Vehicular ad-hoc Network where short rage network is formed among the VANET node. VANET nodes is to connect and share messages with other network nodes in infrastructure or infrastructure less network. Due to absence of secure infrastructure, VANET is prone to wide-ranging attacks. In Impersonation attack, attacker can easily capture the origin node. Attacker breach will impact on integrity, confidentiality and authenticity. In this paper, establishing a secure connection in VANET using Kalman filter against impersonation attack by detecting accurate position of the legitimate node. Watermarking is used to secure the data during the communication in the network. The proposed scheme is analyzed using metrices like node detection, SNR, PDR, delay. Once the false node is found, it will be isolated from other networks in the environment. These protocol aims to protect VANET against impersonation attack

Investigations of the conversion of inorganic carbonates to methane

Inorganic carbonates, which occur abundantly on earth, constitute an inexpensive natural source of carbon. Therefore, the direct conversion of these carbonates into methane is of considerable importance. Thermal decomposition of transition metal carbonates with the composition MCa(CO<SUB>3</SUB>)<SUB>2</SUB> (where M=Co, Ni, or Fe, and M/Ca is 1:1) and M<SUP>1</SUP>M<SUP>2</SUP>Ca(CO<SUB>3</SUB>)<SUB>3</SUB> (where M<SUP>1</SUP>M<SUP>2</SUP>=CoNi, NiFe, or FeCo, and M<SUP>1</SUP>/M<SUP>2</SUP>/Ca is 1:1:2) shows that the reduced transition metals in combination with metal oxide nanoparticles (e.g., Co/CoO/CaO) act as catalysts for the conversion of CO<SUB>2</SUB> (produced from the carbonates) into methane. The favorable decomposition conditions include heating at 550°C in an H<SUB>2</SUB> atmosphere for 5-6 h. These catalysts are found to be excellent for the methanation of CaCO<SUB>3</SUB>, exhibiting high efficiency in the utilization of H<SUB>2</SUB> with 100 % conversion and 100 % selectivity. The best catalyst for conversion of CaCO<SUB>3</SUB> into CH<SUB>4</SUB> is Co/CoO/CaO. There are also indications that similar catalysts based on Fe may yield higher hydrocarbons

Use of amorphous carbon nanotube brushes as templates to fabricate GaN nanotube brushes and related materials

Amorphous carbon nanotube brushes were prepared by a simple method using glucose as the carbon precursor. The functional surfaces of these nanotubes were covered with gallium ions and then calcined to get gallium oxide nanotube brushes. The gallium oxide nanotube brushes were successfully converted to crystalline GaN nanotube brushes by treatment of ammonia at 800°C. The method is applicable to make other nanobrushes as well

Construction of bi-functional inorganic–organic hybrid nanocomposites

Single system bi-functional inorganic–organic hybrid nanocomposites, PB@SiO<SUB>2</SUB>@BTC@Ln (PB = Prussian blue, BTC = benzene tricarboxylate; Ln = Tb(III)/Sm(III)) having a PB magnetic core and a luminescent lanthanide probe, show superparamagnetic behavior and significant enhancement in luminescence intensities

Demonstration of a plant-microbe integrated system for treatment of real-time textile industry wastewater

The real-time textile dyes wastewater contains hazardous and recalcitrant chemicals that are difficult to degrade by conventional methods. Such pollutants, when released without proper treatment into the environment, impact water quality and usage. Hence, the textile dye effluent is considered a severe environmental pollutant. It contains mixed contaminants like dyes, sodium bicarbonate, acetic acid. The physico-chemical treatment of these wastewaters produces a large amount of sludge and costly. Acceptance of technology by the industry mandates that it should be efficient, cost-effective and the treated water is safe for reuse. A sequential anaerobic-aerobic plant-microbe system with acclimatized microorganisms and vetiver plants, was evaluated at a pilot-scale on-site. At the end of the sequential process, decolorization and total aromatic amine (TAA) removal were 78.8% and 69.2% respectively. Analysis of the treated water at various stages using Fourier Transform Infrared (FTIR), High Performance Liquid Chromatography (HPLC)) Gas Chromatography-Mass Spectrometry (GC-MS) Liquid Chromatography-Mass Spectrometry (LC-MS) indicated that the dyes were decolourized and the aromatic amine intermediates formed were degraded to give aliphatic compounds. Scanning Electron Microscope (SEM) and Atomic Force Microscopy (AFM) analysis showed interaction of microbe with the roots of vetiver plants. Toxicity analysis with zebrafish indicated the removal of toxins and teratogens

ATP driven clathrin dependent entry of carbon nanospheres prefer cells with glucose receptors

Abstract Background Intrinsically fluorescent glucose derived carbon nanospheres (CSP) efficiently enter mammalian cells and also cross the blood brain barrier (BBB). However, the mechanistic details of CSP entry inside mammalian cells and its specificity are not known. Results In this report, the biochemical and cellular mechanism of CSP entry into the living cell have been investigated. By employing confocal imaging we show that CSP entry into the mammalian cells is an ATP-dependent clathrin mediated endocytosis process. Zeta potential studies suggest that it has a strong preference for cells which possess high levels of glucose transporters such as the glial cells, thereby enabling it to target individual organs/tissues such as the brain with increased specificity. Conclusion The endocytosis of Glucose derived CSP into mammalian cells is an ATP dependent process mediated by clathrin coated pits. CSPs utilize the surface functional groups to target cells containing glucose transporters on its membrane thereby implicating a potential application for specific targeting of the brain or cancer cells.</p

Earth Abundant Iron-Rich N‑Doped Graphene Based Spacer and Cavity Materials for Surface Plasmon-Coupled Emission Enhancements

We demonstrate for the first time the use of Fe-based nanoparticles on N-doped graphene as spacer and cavity materials and study their plasmonic effect on the spontaneous emission of a radiating dipole. Fe–C–MF was produced by pyrolizing FeOOH and melamine formaldehyde precursor on graphene, while Fe–C–PH was produced by pyrolizing the Fe-phenanthroline complex on graphene. The use of the Fe–C–MF composite consisting of Fe-rich crystalline phases supported on N-doped graphene presented a spacer material with 116-fold fluorescence enhancements. On the other hand, the Fe–C–PH/Ag based cavity resulted in an 82-fold enhancement in Surface Plasmon-Coupled Emission (SPCE), with high directionality and polarization of Rhodamine 6G (Rh6G) emission owing to Casimir and Purcell effects. The use of a mobile phone as a cost-effective fluorescence detection device in the present work opens up a flexible perspective for the study of different nanomaterials as tunable substrates in cavity mode and spacer applications