Biochemical Composition of Artemia Cysts Used as Food for Juvenile Fish from Different Hypersaline Lakes of the Altai Territory
Irina V. Moruzi, Lubov V. Vesnina, Vladimir S. Tokarev, Elena V. Pishchenko, Ekaterina E. Djakovskay, Dmitriy V. Kropachev, Rajabov M. Farhod, Ivan V. Вibikov
Issue: 102, Pages: 1-4, Article No: e102001, Year: 2017
[Abstract]
Full Text: (PDF)
[References]
ABSTRACT
Artemia it is widely used as a launching feedstuff for the cultivation of fish larvae and Crustaceans. We studied the biochemical composition of cysts from different hyperhaline [do mean hypersaline] reservoirs, small lakes (Dushnoe, Malinovoe) as well as in the large Bolshoe and Maloe Jarovoe lakes, Kulundinsky, district located in the territory of Western Siberia in the Altai region. The relative quantitative analysis of interchangeable and essential amino acids, fatty acid contents, mineral substances and vitamins was carried out. Nonessential amino acids were dominant in most of the cysts from lake Maloe Jarovoe and Dushnoe. In lake Dushnoe, Bolshoe Jarovoe and Kulundinsky, lysine was the dominant amino acid.The dimension of lakes and their salinity authentically did not influence the composition of amino acids in the cysts.
Keywords: cysts, hypersaline lake, live feed, biochemical composition, amino acids, fatty acids
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Rapid Antimicrobial Susceptibility Testing of Yersinia Pestis Strains from Kazakhstan Plague Foci
Tatyana V. Meka-Mechenko, Zaurbek A. Sagiyev, Elmira Zh. Begimbayeva, Larissa E. Nekrassova, Galina G. Kovaleva, Uinkul A. Izbanova, Larissa Y. Lukhnova, Tatyana K. Kunitsa, Saule K. Umarova
Issue: 102, Pages: 5-11, Article No: e102002, Year: 2017
[Abstract]
Full Text: (PDF)
[References]
ABSTRACT
As far as new antibiotic-resistant Yersinia pestis strains appear in the climate of bioterrorism threats, plague susceptibility to antibacterials requires regular testing. Yersinia pestis should be put through rapid antimicrobial susceptibility tests. Since it grows slowly on agar media, the rapid in vivo test is especially required. The purpose of this research is to study Yersinia pestis strains from different Kazakhstan plague foci and to design an easy and fast method of antibiotic susceptibility estimation. All Y.pestis strains were susceptible to antibacterial agents traditionally recommended for plague treatment. All isolates were susceptible to ß-lactam antibacterials, including imipenem, fluoroquinolones, aminoglycosides and doxycycline. We have not detected any resistant Y.pestis strains during a 10-year investigation. We showed that preliminary rapid AST allows getting indices in 3-6 hours from the moment of Y. pestis isolation. Therefore, we recommend it for making a preliminary choice of antibacterial agents for plague treatment using HiComb MIC test for getting results that are more accurate. Strains resistant to antibacterials have not been detected during the 10-year research. The V.I. Ilyukhin’s method and the HiComb MIC test are recommended for rapid assessment of microorganism sensitivity to chemotherapy and should be out by anti-plague institutions into practical contexts.
Keywords: Y.pestis, antibiotic susceptibility, plague foci, minimum inhibitory concentration, antibacterial agent
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Planned Behavior Theory-based Study on the Influencing Factors in Construction Waste Reducing Willingness——with Construction Workers as an Example
Jingkuang Liu, Guokai Li, Huichong Li, Zhenshuang Wang
Issue: 102, Pages: 13-28, Article No: e102003, Year: 2017
[Abstract]
Full Text: (PDF)
[References]
ABSTRACT
China’s economy has developed rapidly over the past four decades of reform and opening up. With Pearl River Delta urban agglomerations as the core representative, the urbanization has been promoted, witnessing massive construction of modern urban infrastructure and resulting in continuous accumulation of construction waste. Advocating circular economy development model is generally regarded as one effective way to solve the problem of construction waste, as it can alleviate resource shortage and environmental pressure caused by the continuously increased construction waste. Meanwhile, issues concerning construction waste reducing have attracted wide attention. According to the review of relevant literature, this paper analyzes the influencing factors in construction worker’s willingness to reduce construction waste based on planned behavior theory, and constructs a preliminary research model. The results show that: (1) Perceived usefulness, perceived ease of use, compatibility, and personal responsibility exert positive effect on construction workers’ attitudes toward construction reducing, with effect of perceptual usefulness most significant, compatibility second, and responsibility the weakest. (2) Interpersonal influence and external influence exert increasingly stronger effect on construction workers’ reducing willingness in subjective normative perception. (3) Perceptual behavior control and behavioral intention in construction reducing have a direct impact on actual construction reducing behavior of construction workers. Where, perceptual behavior control in construction reducing exerts more significant effect on the actual construction reducing behavior compared to behavioral intention. (4) Self-efficacy, facility conditions, and financial incentives have a positive impact on construction workers’ perceptual behavior control in construction reducing, which has a gradually increasing influence degree. (5) Subjective norms and behavioral attitudes towards construction waste have a direct impact on behavioral intention in construction reducing, perceived behavioral control has no significant effect on construction workers’ behavioral intention in reducing, and subjective norms exert a more significant effect on behavioral intention in reducing compared to behavioral attitude. The research conclusions can serve as theoretical basis and decision-making reference for construction workers’ reducing management on the construction site.
Keywords: construction waste, construction workers, planned behavior theory, reducing, behavioral willingness
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