INFLUENCE OF SODIUM ON ASSIMILATION PROCESS OF Cr(VI) AND Cu BY ARTHROBACTER GLOBIFORMIS 151B CHROMIUM-RESISTANT BACTERIUM

This paper aimed to study the content of the concept of wife in Russian and English-speaking linguocultures. The research will broaden the understanding of linguistic consciousness of Russian and English native speakers as well as identify some peculiarities of their world image. It is important to study the national world image today, as it can help to improve mutual understanding between cultures and simplify the assimilation process for those who decide to immigrate for some reason or other. The author utilized the methods of linguocultural and comparative analysis, as well as of associative-verbal nets study suggested by Yu.N. Karaulov. They include comparing associative-verbal nets by respondents’ first two reactions, identifying the most frequent types of answers, and grouping the responses into semantic zones. Further, the article analyses the synonymic chains of the word wife and explains the significance of this concept in Russian and English-speaking linguocultures, as well as identifies common semantic groups for the concept (wedding, household) and determines a common response to the stimulus in the two linguocultures. In addition, the paper traces differences in the perception of the concept of wife and singles out various semantic zones and their key elements. The research found that for many Russian native speakers, this concept contains such features as faith and belonging to someone, while in English linguistic consciousness it includes gender and partnership.

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DEER and RIDME Measurements of the Nitroxide-Spin Labelled Copper-Bound Amine Oxidase Homodimer from Arthrobacter Globiformis

Applied Magnetic Resonance ◽

10.1007/s00723-021-01321-6 ◽

2021 ◽

Author(s):

Hannah Russell ◽

Rachel Stewart ◽

Christopher Prior ◽

Vasily S. Oganesyan ◽

Thembaninkosi G. Gaule ◽

...

Keyword(s):

Dipolar Coupling ◽

Amine Oxidase ◽

Spin Labels ◽

Arthrobacter Globiformis ◽

Copper Amine Oxidase ◽

Dipole Interactions ◽

Nitroxide Spin Labels ◽

Double Electron Electron Resonance ◽

Dipolar Modulation ◽

Paramagnetic Centres

AbstractIn the study of biological structures, pulse dipolar spectroscopy (PDS) is used to elucidate spin–spin distances at nanometre-scale by measuring dipole–dipole interactions between paramagnetic centres. The PDS methods of Double Electron Electron Resonance (DEER) and Relaxation Induced Dipolar Modulation Enhancement (RIDME) are employed, and their results compared, for the measurement of the dipolar coupling between nitroxide spin labels and copper-II (Cu(II)) paramagnetic centres within the copper amine oxidase from Arthrobacter globiformis (AGAO). The distance distribution results obtained indicate that two distinct distances can be measured, with the longer of these at c.a. 5 nm. Conditions for optimising the RIDME experiment such that it may outperform DEER for these long distances are discussed. Modelling methods are used to show that the distances obtained after data analysis are consistent with the structure of AGAO.

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Microbacterium sp. MRS-1, a potential bacterium for cobalt reduction and synthesis of less/non-toxic cobalt oxide nanoparticles (Co3O4)

Beni-Suef University Journal of Basic and Applied Sciences ◽

10.1186/s43088-020-00070-y ◽

2020 ◽

Vol 9 (1) ◽

Author(s):

Sathyavathi Sundararaju ◽

Manjula Arumugam ◽

Prakash Bhuyar

Keyword(s):

Heavy Metal ◽

Cobalt Oxide ◽

Metal Oxide Nanoparticles ◽

Industrial Effluent ◽

Industrial Applications ◽

Resistant Bacterium ◽

Oxide Nanoparticles ◽

Cobalt Metal ◽

Cobalt Oxide Nanoparticles ◽

Heavy Metal Resistant

Abstract Background Detoxification of heavy metal pollutants in wastewater has become a serious problem to surrounding environment. This research was conducted to utilize a potential heavy metal-resistant bacterium for the remediation of cobalt metal and simultaneous synthesis of cobalt oxide nanoparticles in the form of powder for various industrial applications. Metal oxide nanoparticles have great applications in electrochemical devices such as supercapacitors, biosensors, and batteries. Method A heavy metal-resistant bacterium Microbacterium sp. MRS-1 isolated from electroplating industrial effluent reduced cobalt ions from an initial concentration of 200 mg/L to 26 mg/L were analyzed by atomic absorption spectroscopy. Instrumental analysis of bacterially synthesized Co3O4 has been characterized. Cytotoxicity of synthesized nanoparticles was assessed by MTT assay. Results Microbacterium sp. MRS-1 isolated from electroplating industrial effluent was found to be suitable for cobalt oxide nanoparticles as it showed tolerance towards high concentration of metal. The nutrient broth containing metal solution and Microbacterium sp. MRS-1 showed color change from light pink to dark pink indicated the formation of extracellular nanoparticles. It also converted soluble cobalt salts into less soluble cobalt oxide nanoparticles outside the cell which allows easy recovery of nanoparticles without the destruction of cells and simultaneous detoxification of toxic metal ions. Electron microscopic imaging verified that nanoparticles were predominantly surrounding the bacterial cells and SEM imaging revealed that the produced particles were in the range of 10–100 nm in size. XRD spectrum exhibited 2θ values were corresponding to cubic face-centered cobalt oxide (Co3O4) nanoparticles. Conclusion The present study investigated new prospective for eco-friendly detoxification of toxic heavy metal Co from metal-polluted sites and the production of cobalt oxide nanoparticles in powder form for clinical and other industrial applications.

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Mainstream Flavor: Ethnic Cuisine and Assimilation in the United States

Social Currents ◽

10.1177/2329496520948169 ◽

2020 ◽

Vol 8 (1) ◽

pp. 64-85

Author(s):

Anna Boch ◽

Tomás Jiménez ◽

Katharina Roesler

Keyword(s):

United States ◽

Ethnic Groups ◽

Cultural Change ◽

Culture Change ◽

Contextual Factors ◽

The United States ◽

Factors Associated ◽

Assimilation Process ◽

Restaurant Reviews ◽

Mexican Populations

Assimilation theories posit that cultural change is part and parcel of the assimilation process. That change can register in the symbols and practices that individuals invoke as part of an ethnic experience. But cultural change also includes the degree to which the mainstream takes up those symbols and practices as part of its composite culture. We develop a way to examine whether cuisine, an important component of ethnic culture, is part of the mainstream’s composite culture and the contextual factors associated with the presence of ethnic cuisine in the composite culture. We begin with a comparison of 761,444 reviews of Mexican, Italian, Chinese, and American restaurants across the United States from Yelp!, an online customer review platform. We find that reviews of Mexican restaurants mention ethnicity and authenticity much more than reviews of Italian and American restaurants, but less than reviews of Chinese restaurants, suggesting intermediate mainstreaming of Mexican cuisine. We then examine Mexican restaurant reviews in the 82 largest U.S. core-based statistical areas (CBSAs) to uncover the contextual factors associated with Mexican cuisine’s local mainstream presence. We find that Mexican food is less defined in ethnic terms in CBSAs with larger and more culturally distinct Mexican populations and at less-expensive restaurants. We argue that regional versions of the composite culture change as ethnic groups come to define a region demographically and culturally.

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