scholarly journals Application of biological safety index in two Japanese watersheds using a bioassay battery

Chemosphere ◽  
2008 ◽  
Vol 72 (9) ◽  
pp. 1303-1308 ◽  
Author(s):  
Dongbin Wei ◽  
Zhifen Lin ◽  
Takashi Kameya ◽  
Kohei Urano ◽  
Yuguo Du
2004 ◽  
Author(s):  
D. Sassone ◽  
A. Jin ◽  
S. Kawalewsky ◽  
K. Groves

2020 ◽  
Vol 10 (1) ◽  
pp. 66-69
Author(s):  
Natalia Zhavoronkova ◽  
Vyacheslav Agafonov

The article is devoted to the study of modern theoretical and legal problems of ensuring biological security in the Arctic zone of the Russian Federation. The published Draft of Federal law No. 850485-7“On biological security of the Russian Federation”provides an opportunity to take a closer look at the problem of legal provision of biological security in relation to the most vulnerable ecosystems, and, first of all, the Arctic. The article considers the most important features and potential risks of the Arctic zone of the Russian Federation of critical importance from the point of view of biological hazards, the features (specificity) of biological safety problems from the point of view of organizational-legal features and, in particular, from the perspective of environmental law. It is proved that, given the special situation of the Arctic zone of the Russian Federation, in addition to the base Federal law“About biological safety” required a specific law on biological and ecological safety of the Arctic zone of the Russian Federation, which should be generated on a slightly different model than the draft Federal law «On biological safety”, to wear the most specific, applied nature.


Author(s):  
L.V. Kataeva ◽  
T.F. Stepanova ◽  
O.V. Posoyuznykh ◽  
V.V. Tashlanova ◽  
N.F. Karpukhina ◽  
...  

The analysis of cases of detection of bacteria of the genus Aeromonas in clinical material from various loci of patients of medical organizations was carried out. Their species diversity, isolation in monoculture and associations, resistance to antibiotics and spring-autumn rises indicate the etiological significance of these microorganisms in the infectious process. To improve the biological safety of aquatic biotopes, it is important to study their microbiocenosis, in particular, the circulation of bacteria of the genus Aeromonas, in order to obtain information on pathogenic properties, antibiotic resistance, and seasonal fluctuations. To prevent the spread of Aeromonas infections, it is necessary to carry out sanitary and bacteriological studies of water bodies, environmental objects and food products.


Author(s):  
M.I. Chubirko ◽  
O.V. Klepikov ◽  
G.P. Dubova ◽  
E.M. Studenikina

The article considers problematic practical moments of compliance with the rules and methods of research of safety indicators of non-food products in accordance with the requirements of the Technical Regulations of the Customs Union. The authors give examples of the inconsistency of the measurement procedures presented in the lists, indicated in the lists of various technical regulations for the study of non-food products, directly affects the work of laboratories and limits their ability to conduct research. Using the example of methods for determining the concentration of formaldehyde in air extracts indicated in different technical regulations for non-food products, it is shown that in practice there are situations when the same safety index for different groups of goods is investigated according to different measurement methods. It has been shown that until now in the lists of documents in the field of standardization, containing rules and methods of research (testing) and measurements, there are methods that do not meet the sensitivity requirements specified in the same technical regulations, as well as certain documents that have become invalid. Proposals on synchronization of rules and methods for researching the safety indicators of non-food products for timely provision of sanitary and epidemiological surveillance with objective data on valid up-to-date documents have been developed.


Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 731
Author(s):  
Yoshimitsu Okazaki ◽  
Shin-ichi Katsuda

We performed biological safety evaluation tests of three Ti–Zr alloys under accelerated extraction condition. We also conducted histopathological analysis of long-term implantation of pure V, Al, Ni, Zr, Nb, and Ta metals as well as Ni–Ti and high-V-containing Ti–15V–3Al–3Sn alloys in rats. The effect of the dental implant (screw) shape on morphometrical parameters was investigated using rabbits. Moreover, we examined the maximum pullout properties of grit-blasted Ti–Zr alloys after their implantation in rabbits. The biological safety evaluation tests of three Ti–Zr alloys (Ti–15Zr–4Nb, Ti–15Zr–4Nb–1Ta, and Ti–15Zr–4Nb–4Ta) showed no adverse (negative) effects of either normal or accelerated extraction. No bone was formed around the pure V and Ni implants. The Al, Zr, Nb, and Ni–Ti implants were surrounded by new bone. The new bone formed around Ti–Ni and high-V-containing Ti alloys tended to be thinner than that formed around Ti–Zr and Ti–6Al–4V alloys. The rate of bone formation on the threaded portion in the Ti–15Zr–4Nb–4Ta dental implant was the same as that on a smooth surface. The maximum pullout loads of the grit- and shot-blasted Ti–Zr alloys increased linearly with implantation period in rabbits. The pullout load of grit-blasted Ti–Zr alloy rods was higher than that of shot-blasted ones. The surface roughness (Ra) and area ratio of residual Al2O3 particles of the Ti–15Zr–4Nb alloy surface grit-blasted with Al2O3 particles were the same as those of the grit-blasted Alloclassic stem surface. It was clarified that the grit-blasted Ti–15Zr–4Nb alloy could be used for artificial hip joint stems.


2021 ◽  
Vol 25 (4) ◽  
pp. 1144-1162
Author(s):  
Milad Alipour-Bashary ◽  
Mehdi Ravanshadnia ◽  
Hamidreza Abbasianjahromi ◽  
Ehsan Asnaashari

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