Groundwater contaminant transport modeling using Visual MODFLOW: a case study of corporation sewage farm in South Madurai, Tamil Nadu, India

Sundararaj, Chandran; Muthukaruppan, Kaarmegam; Mariappan, Dhanasekarapandian; Veluswamy, Kumar

doi:10.1007/s12517-022-10804-0

Cited by 3 publications

(2 citation statements)

References 36 publications

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“…Differential media are used to cultivation more than one bacteria of interest but distinguish between them whose growth they support, usually by means of a coloured indicator such as MacConkey agar (5) . Enriched media are used to support the growth of fastidious bacteria such as blood agar (3) and the selective media are preferentially support the growth of specific bacteria, such as mannitol salt agar (6) .…”

Section: Introductionmentioning

confidence: 99%

Test Some New Media for Cultivation of Gram Positive and Gram Negative Bacteria

2020

IJFMT

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Possibility of using the wastes of used paper to prepare a culture medium for bacterial growth was carried out in this study, five experimental culture media (paper waste extract agar, glucose paper waste extract agar, yeast extract paper waste extract agar, NaCl paper waste extract agar and GYN paper waste extract agar) that made from the extract of used papers were prepared to cultivation two species of Gram positive bacteria (Staphylococcus aureus and Streptococcus spp.) and two species of Gram negative bacteria (Escherichia coli and Pseudomonas aeruginosa) in comparison with readymade media (nutrient agar and brain-heart infusion agar). Heavy growth of bacteria was appeared on yeast extract paper waste extract agar and GYN paper waste extract agar media, while no growth was happen on the other three experimental culture media. The results of statistical analysis found that there is no significant different at P≤0.05, using LSD test among yeast extract paper waste extract agar , GYN paper waste extract agar and nutrient agar or brain-heart infusion agar media .These results indicate likelihood of using two experimental culture media instead of nutrient agar or brain-heart infusion agar to cultivation of bacteria.

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Section: Introductionmentioning

confidence: 99%

Test Some New Media for Cultivation of Gram Positive and Gram Negative Bacteria

2020

IJFMT

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“…The outer membrane does not allow large molecules such as protein to permeate into cells, but allow small molecules such as monosaccharides peptides and amino acids permeate through channels called porins. Porins span the membrane and are specific for different kinds of small molecules [26].…”

Section: Bacteriamentioning

confidence: 99%

Quaternary ammonium chitin nanoparticles for antibacterial nanomedicine

Kumpanead

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This research was purposed to synthesize quaternary ammonium chitin as an antibacterial agent for biomedical applications such as wound dressing, nanomedicine or drug carrier. (Carboxymethyl)trimethyl ammonium chloride (CMA) was selected to modified onto chitin (CT) via acylation resulted in carboxymethyl trimethyl ammonium chitin (CTCMA). CTCMA possessed positive charges to interact with negatively charged bacterial cell membrane, leading to cell death. In order to study the effect of material size and shape to antibacterial activity with an expectation that an increasing in surface area should enlarge positively charged exposure in a consequence of enhancing antibacterial activity, thus, CTCMA nanoparticles and hydrogels were fabricated in this research via ultra-sonication technique and self-assembly. From FTIR spectra, CTCMA exhibited the characteristic peak of ester linkage at 1735 cm-1 shifted from carboxylic ester of CMA at 1726 cm-1 and from 13C-NMR spectra, CTCMA exhibited the chemical shift of CH2- at 66.85 ppm and +NCH3 at 63.85 ppm, indicating the successful acylation. The degree of acylation or degree of substitution was determined as 1.67. Dynamic light scattering technique showed that particle size and surface charged of CTCMA were about 284.8±65.42 nm and 0.61±0.06, respectively. CTCMA was prepared into colloidal nanoparticles dispersed in distilled water and nanoparticles dried on glass slide. Besides, hydrogel was prepared via solvent exchange method. Antibacterial activity of samples was tested against both Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) by %reduction under ASTM E2149-10. It was found that CTCMA after fabrication into nanoparticles and hydrogels did not exhibited antibacterial activities. This might due to the hydrolysis of ester linkage during fabrication. Besides, the antibacterial activity of CTCMA nanoparticles dried on glass slide was also evaluated under AATCC100. It was found that CTCMA showed antibacterial activity against S. aureus around 14.62%. Degradation of CTCMA and CT hydrogels were investigated against lysozyme. CTCMA showed faster degradability than unmodified chitin. Explained from X-ray diffractogram of CTCMA, it represented crystallinity index about 68.79% which less than CT that represented about 82.94%. Thus, quaternary ammonium chitin could be applied for antibacterial biomedical applications. But, it has to be fabricated into ready to use applications instantly after synthesis for preserving its antibacterial activity.

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Environmental impact assessment of acidic coal gangue leaching solution on groundwater: a coal gangue pile in Shanxi, China

Guo,

Li,

et al. 2024

Environ Geochem Health

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Groundwater contaminant transport modeling using Visual MODFLOW: a case study of corporation sewage farm in South Madurai, Tamil Nadu, India

Cited by 3 publications

References 36 publications

Test Some New Media for Cultivation of Gram Positive and Gram Negative Bacteria

Test Some New Media for Cultivation of Gram Positive and Gram Negative Bacteria

Quaternary ammonium chitin nanoparticles for antibacterial nanomedicine

Environmental impact assessment of acidic coal gangue leaching solution on groundwater: a coal gangue pile in Shanxi, China

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