Biological response to 5 years of operations of cascade rubber dams in a plateau urban river, China

2020 ◽  
Author(s):  
Xufeng Mao ◽  
Xiaoyan Wei ◽  
Bernard Engel ◽  
Wenying Wang ◽  
Xin Jin ◽  
...  
Keyword(s):  
Biological Response ◽  
Urban River ◽  
Rubber Dams

Biological assessment of an urban river using algal indices

2006 ◽  
Vol 8 (1) ◽  
pp. 19-31 ◽  
Author(s):  
N. Jafari Ghavzan ◽  
V. R. Gunale ◽  
R. K. Trivedy
Keyword(s):  
Urban River ◽  
Biological Assessment

A Case of Malignant Melanoma Treated with a Combination of Anti-Cancer Drugs and Biological Response Modifiers.

1993 ◽  
Vol 55 (1) ◽  
pp. 43-46
Author(s):  
Jun YOSHIDA ◽  
Juichiro NAKAYAMA ◽  
Nobuyuki SHIMIZU ◽  
Shonosuke NAGAE ◽  
Yoshiaki HORI
Keyword(s):  
Malignant Melanoma ◽  
Biological Response ◽  
Biological Response Modifiers ◽  
Cancer Drugs ◽  
Anti Cancer

Biological response of the organism to the introduction of metal nanocomposites

2020 ◽  
pp. 761-762
Author(s):  
L. M. Sosedova ◽  
V. S. Rukavishnikov ◽  
E. A. Titov
Keyword(s):  
Cell Death ◽  
Programmed Cell Death ◽  
Biological Response ◽  
Brain Cell ◽  
Metal Nanocomposites ◽  
The Brain

The results of a study on rats toxicity of nanoparticles of metals bismuth, gadolinium and silver encapsulated in a natural biopolymer matrix arabinogalactan are presented. When intake of nanocomposite of silver revealed the readiness of the brain cell to apoptosis. The effect of bismuth and gadolinium nanocomposites did not cause an increase in the process of programmed cell death.

Study of Alnus incana L. Moench fruit extract biologically active substances influence on resistance development in mls-resistant staphylococci skin isolates

2018 ◽  
Vol 22 (2) ◽  
pp. 263-266
Author(s):  
R.V. Kutsyk ◽  
O.I. Yurchyshyn
Keyword(s):  
Selective Pressure ◽  
Biological Response ◽  
Biologically Active Substances ◽  
Biologically Active ◽  
Alnus Incana ◽  
Fruit Extract ◽  
Antimicrobial Drugs ◽  
Resistance Development ◽  
Subinhibitory Concentrations ◽  
Active Substances

The emergence of microorganisms resistant strains is a natural biological response to the use of antimicrobial drugs that creates selective pressure, contributing to pathogens selection, survival and reproduction. The purpose of the investigation was to study the resistance development of staphylococci skin isolates to erythromycin and influence on it Alnus incana L. fruit extract subinhibitory concentrations. Development of resistance to erythromycin and influence on it Alnus incana L. fruit extract (extraction by 90% ethanol) subinhibitory concentrations were conducted with S epidermidis strains: sensitive and resistant to 14 and 15-membered macrolides. The study was carried out within 30 days by multiple consecutive passages of staphylococci test strains (concentration 1×107 CFU/ml) into test tubes containing broth and erythromycin ranging from 3 doubling dilutions above to doubling dilutions below the minimum inhibitory concentration. Statistical analysis of the results was carried out by one-and two-factor analysis of variance (ANOVA) and Microsoft Office Excel 2011. Rapid increase of resistance from 32 to 1024 μg/ml (F=34.2804; F> Fstand. max = 5.9874; p=0.0011) for S.epidermidis with a low level of resistance to 14 and 15-membered macrolides resistance to the erythromycine was observed. In the presence of Alnus incana L. fruit extract subinhibitory concentrations (¼ MIC), the initial MIC of erythromycin was decreased by 32 times to 1 μg/ml (F = 9.7497; F> Fstand. max = 5.9874; p = 0.0205). The sensitive strain after 30 passages did not develop resistance to erythromycin. Under the influence of erythromycin selective pressure, S.epidermidis strain with low initial level of MLS-resistance rapidly reaches a high-level resistance. Biologically active substances of the Alnus incana L. fruit extract significantly inhibit the resistance development in S. epidermidis to macrolides and eliminate it phenotypic features.

Impact of Organic Matter from Stormwater on Water Quality in an Urban River

2015 ◽  
Vol 2015 (9) ◽  
pp. 1462-1481
Author(s):  
Jacob Richardson ◽  
R. Ryan Dupont ◽  
Joan E McLean
Keyword(s):  
Water Quality ◽  
Organic Matter ◽  
Urban River
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