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The antibacterial activities of H.

() • Antibacterial / Seeds: Study evaluated various extracts of leaves and seeds for antibacterial activity against S.

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Antibacterial activity of plant extracts ..

Abstract:
We present studies of three electrons confined in a triple quantum dot with one of the dots connected to metallic electrodes which is modeled by a three-impurity Anderson Hamiltonian. It is focused on the pairwise quantum entanglement of a three-spin system and its relation to the thermodynamic and transport properties. It is shown that two many-body phenomena compete with each others, the Kondo effect and the inter-dot exchange interactions. In fact, coupling triple quantum dots to the electrodes results a formation of the Kondo singlet which can switch the entanglement due to the interplay between the interdot spin-spin correlations and various Kondo-like ground states. The quantum phase transition between unentangled and entangled states is studied quantitatively and the corresponding phase diagram is explained by exactly solvable four spin model. Although the work concentrates on the system of quantum dots, the model is more general and can be applied to the Kondo physics in molecules with a triangular symmetry.

Extraction, Isolation and characterization of bioactive compounds from plant’s extracts.

Antimicrobial Activity of Harmal Plant i Peganum i i i i Antimicrobial Activity Table Antimicrobial Testing MIC values represent the minimum amount of extract measured

Antimicrobial activity from plant extracts against susceptible (6) ..

Designing and in-vitro antibacterial activity of new benzotriazole compounds.

The antimicrobial activity was attributed to the presence of active constituents like alkaloids or tannins.
: Study showed intraperitoneal use of Mimosa pudica decoction protected mice against pentylentetrazol and strychnine-induced seizures.
• Plant extracts showed the plant to be a moderate diuretic, depressed duodenal contractions (similar to atropine), promoted nerve regeneration and reduce menorrhagia.
• Also shown to have antidepressant activity.
: Studies on the root extract of M.

The antimicrobial activities were assessed using the agar diffusion method, and the thermal stabilities of extracts were examined after heat treatment at 60, 70, 80, and

Antimicrobial activity of plant extracts thesis

Title of Talk: Electrochemical Template Synthesis of Ni-Co Nanowires with Tunable Properties

Abstract:
Biofilms are three-dimensional structures that contains billions of genetically identical bacteria submerged in a self-produced extracellular matrix, which protect bacteria from antibiotics and the human immunological defenses. More than 85 % of chronic and/or recurrent human infections are linked to bacterial biofilms. In addition, spore-forming pathogenic bacteria represent an additional community threat because of their intrinsic refractory behavior against antibiotics, phagocytes and their easy utilization in bioterrorist attacks. Therefore, every day the available microbicide arsenal against biofilms and spores becomes scarcer. Accordingly, nano-material biotechnology emerges as a promising alternative for reducing the detrimental effects of microbial-related diseases. Here we describe the development of novel nanostructured coating systems with improved photocatalytic and antibacterial activities. These systems comprise, in one case, layers of SiO2 followed by layers of mesoporous or dense TiO2-anatase, and doping with silver nanoparticles (Ag NPs). In the other case, we developed Copper NPs and its oxides by a chemical method based on a bottom up approach and its stabilization using aminosilanes as surface modifiers. The activity of CuNPs and AgNPs (MNPs) was measured against spores and vegetative (planktonic and sessile) forms of the relevant human pathogens Enterohemorrhagic Escherichia coli (etiological agent of Hemolytic Uremic Syndrome), Listeria monocytogenes (etiological agent of septic abortion), Bacillus anthracis (etiological agent of Anthrax), Clostridium perfringens (etiological agent of food-associated diarrhea and Gas Gangrene), cystic-fibrosis related Pseudomona aeruginosa and methicillin-resistant Staphylococcus aureus ( etiological agent of sepsis and myocardiopathies). The planktonic and sessile growth (measured as the final cellular yield at 600 nm and crystal violet staining, respectively) of each pathogen, as well as the sporocide effect on C. perfringens and B. anthracis spores, was very significant at submillimolar concentrations of MNPs (95 % of vegetative growth inhibition and sporocide effect, p

Ayyappadhas R, Jestin C, Kenneth N, Dayana N, Dhanalekshmi UM “Preliminary Studies on Antimicrobial Activity of Swietenia macrophylla Leaf Extract” in International Journal of Pharmaceutical Sciences Review and Research, , Malaysia.

Sikarwar, MB Patil, Hepatoprotective Activity of Ethanolic Extract of Leaves of Polyalthia longifolia, Plant Archives, 2009; 9(1): 181-182
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  • the antimicrobial activity of RC extracts was ..

    Biosynthesis of silver nanoparticles using mangosteen leaf extract and evaluation of their antimicrobial activities.

  • activity of select plant extracts.

    the federalists papers cowriter Phd Thesis On Antimicrobial Activity Of Medicinal Plants java ..

  • of medicinal plant antimicrobial activity.

    The antimicrobial activity of plant oils and extracts has been recognized for many years

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Antimicrobial activity of 115 extracts ..

Abstract:
In this work, we present experimental studies of two earth abundant thin film solar cell materials: Cu2ZnxFe1-xSnS4 and Zn(S,O). Cu2ZnxFe1-xSnS4 and Zn(S,O) are among the most promising candidates to substitute CIGS and CdS as aborber and buffer layers, respectively, in thin film solar cells. Using different characterization techniques such as UV-Vis-NIR spectroscopy, X-ray diffraction, atomic force microscopy, we demonstrate that both materials exhibit structural, morphological and optical properties that are suitable for solar cell applications. The optical constants of the films were calculated from the analysis of the transmittance and reflectance data in the spectral range 300-1800 nm. The band gap energy of both materials varied from 1.10 to 1.55 eV and from 3.27 to 3.08 eV depending on the sulphur and zinc content, respectively. X-ray diffraction patterns show that all Cu2ZnxFe1-xSnS4 and Zn(S,O) films were polycrystalline in nature with a preferential growth along (112) and (002) planes, respectively.

account of antimicrobial effects of plant extracts along with ..

Abstract:
In this work, we present experimental studies of two earth abundant thin film solar cell materials: Cu2ZnxFe1-xSnS4 and Zn(S,O). Cu2ZnxFe1-xSnS4 and Zn(S,O) are among the most promising candidates to substitute CIGS and CdS as aborber and buffer layers, respectively, in thin film solar cells. Using different characterization techniques such as UV-Vis-NIR spectroscopy, X-ray diffraction, atomic force microscopy, we demonstrate that both materials exhibit structural, morphological and optical properties that are suitable for solar cell applications. The optical constants of the films were calculated from the analysis of the transmittance and reflectance data in the spectral range 300-1800 nm. The band gap energy of both materials varied from 1.10 to 1.55 eV and from 3.27 to 3.08 eV depending on the sulphur and zinc content, respectively. X-ray diffraction patterns show that all Cu2ZnxFe1-xSnS4 and Zn(S,O) films were polycrystalline in nature with a preferential growth along (112) and (002) planes, respectively.

2.1 Antibacterial activity of crude extracts from ..

Biography:
Assoc. Prof. Mihaela Koleva is a researcher of multidisciplinary areas of expertise. She graduated a Chemical Engineering at the UCTM-Sofia and defends a PhD thesis in Physics in 2001 at the Institute of electronics – BAS. She was a Postdoc fellow in NIMS-Tsukuba, Japan and a visiting scientist in many worldwide leading laboratories for laser growing of nanomaterials. Her scientific interests cover metal and oxide thin films and nanostructures, fabricated by laser techniques. She conducted experiments on pulsed laser deposition and laser modification of ferrite and optical materials and investigation of their properties. Her recent research is focused on the composite nanostructures with plasmonic nanoparticles for different potential applications.

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