scholarly journals Supercritical Fluid Applications in the Design of Novel Antimicrobial Materials

Molecules ◽  
2020 ◽  
Vol 25 (11) ◽  
pp. 2491 ◽  
Author(s):  
Irena Zizovic
Keyword(s):  
Antimicrobial Activity ◽  
High Pressure ◽  
Supercritical Fluid ◽  
Supercritical Fluids ◽  
Bacterial Resistance ◽  
Environmentally Friendly ◽  
Modern World ◽  
Resistance To Antibiotics ◽  
Antimicrobial Materials ◽  
The World

Bacterial resistance to antibiotics is one of the biggest problems in the modern world. The prevention of bacterial spreading from hospitals to the community and vice versa is an issue we have to deal with. This review presents a vast potential of contemporary high-pressure techniques in the design of materials with antimicrobial activity. Scientists from all over the world came up with ideas on how to exploit extraordinary properties of supercritical fluids in the production of advantageous materials in an environmentally friendly way. The review summarizes reported methods and results.

scholarly journals Helicobacter pyloriAntibiotic Resistance: Trends Over Time

2000 ◽  
Vol 14 (10) ◽  
pp. 895-899 ◽  
Author(s):  
Raymond G Lahaie ◽  
Christiane Gaudreau
Keyword(s):  
Bacterial Infections ◽  
Bacterial Resistance ◽  
Reliable Data ◽  
Asian Countries ◽  
Resistance To Antibiotics ◽  
Treatment Regimens ◽  
The World ◽  
Trends Over Time ◽  
H Pylori ◽  
Resistance Rates

Resistance to antibiotics can be a major problem in the treatment of bacterial infections. As the use of antibiotics increases, bacterial resistance to these agents is rising and in many cases is responsible for the failure of treatment regimens. Although the treatment ofHelicobacter pyloriinfection requires the use of more than one antibiotic to obtain adequate eradication rates, the efficacy of the currently used antibiotic combinations has been shown to be decreased by resistance to one of the antibiotics. The use of antibiotics in regimens for the treatment ofH pyloriis increasing in many countries, including Canada. This increase is both in the use of these antibiotics alone for the treatment of nongastrointestinal infections and in their use in association with proton pump inhibitors for the treatment ofH pyloriinfection. In several European and Asian countries, where resistance to antibiotics is being monitored, it has been demonstrated thatH pyloriresistance to metronidazole and to clarithromycin increased throughout the 1990s. Thus far, the data available in Canada do not show increased resistance to either of these antibiotics. As for other antibiotics used in the treatment ofH pyloriinfection, such as tetracycline and amoxicillin, the rate of resistance to these agents is still very low and does not constitute a significant problem. Because the efficacy of the regimens used in the treatment ofH pyloriinfection is compromised by resistance to the antibiotics used, it is important thatH pyloriresistance rates in Canada and throughout the world continue to be monitored. Only with such reliable data can the most optimal regimens be recommended.

scholarly journals Antimicrobial Activity of Wine in Relation to Bacterial Resistance to Medicinal Antibiotics

OENO One ◽  
2021 ◽  
Vol 55 (1) ◽  
pp. 45-48
Author(s):  
Mladen Boban ◽  
Nataša Boban ◽  
Marija Tonkić ◽  
Mia Grga ◽  
Ana Marija Milat ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Antimicrobial Activity ◽  
Salmonella Enteritidis ◽  
Bacterial Resistance ◽  
Bacterial Suspension ◽  
Antimicrobial Drugs ◽  
Principal Mechanism ◽  
E Coli ◽  
Resistance To Antibiotics ◽  
Time Kill

Although antimicrobial properties of wine have been extensively studied, antimicrobial effects of wine in relation to bacterial resistance to medicinal antibiotics have not been examined. Therefore, our aim was to determine whether bacterial resistance to antibiotics can be related to their resistance to red wine as an unspecific antimicrobial medium. The organisms studied were Salmonella enteritidis (ATCC 13076), Escherichia coli (ATCC 25922), and two clinical isolates which exhibited different resistance to antibiotics, ESBL - producing Escherichia coli UR 3612 and Salmonella enteritidis KK 962. The time-kill curves method was used. The minimal incubation time of the bacterial suspension with wine, necessary for prevention of bacterial growth, was 3 and 20 min for E. coli ATCC and ESBL E. coli respectively. This was associated with susceptibility testing in which E. coli ATCC proved highly sensitive in contrast to ESBL-producing E. coli, which exhibited resistance to a spectrum of antimicrobial drugs of different classes regarding their principal mechanism of action. In the case of S. enteritidis strains, they were similar in their susceptibility against test antibiotics and time-kill curves following exposure to wine. Bacterial resistance to wine is closely associated with bacterial resistance to antimicrobial drugs. The exact mechanisms of antimicrobial activity of wine are still a matter of debate. However, wine might be less susceptible to bacterial resistance development and may include mechanisms different from those of medicinal antibiotics. The present study represents an initial contribution to this important subject which has been practically unexplored.

scholarly journals Optimization of Medium Fermentation for Production of Antimicrobial Compounds by Endofit Bacteria Andalas Plant (Morus macroura Miq.) B.J.T.A-6 Isolate

BioScience ◽  
2019 ◽  
Vol 3 (1) ◽  
pp. 79
Author(s):  
Nada Nafion ◽  
Dwi Hilda Putri ◽  
Irdawati Irdawati
Keyword(s):  
Staphylococcus Aureus ◽  
Antimicrobial Activity ◽  
Endophytic Bacteria ◽  
Bacterial Resistance ◽  
Inhibition Zone ◽  
Fermentation Medium ◽  
Luria Bertani ◽  
Antimicrobial Compounds ◽  
Luria Bertani Broth ◽  
The World

Cases of bacterial resistance to antibiotics are discussed with serious problems in the world of health. New antimicrobial compounds are needed which are more effective in treating infectious diseases. Isolate B.J.T.A-6 is an endophytic bacteria from Andalas plants (Morus macroura Miq.) which is known to be able to produce antimicrobial active compounds. Antimicrobial compounds can be produced by growing them on fermented media. The purpose of this study was to optimize the medium fermentation of Andalas endophytic bacteria of B.J.T.A-6  isolates in producing antimicrobial compounds. While medium fermentation is Nutrient Broth (NB), Muller Hinton (MH), and Luria Bertani Broth (LB). Antimicrobial activity tests were carried out by means of diffusion. The parameters used were the diameter of the inhibition zone against Staphylococcus aureus around the disc paper. The profile of medium fermentation optimization was analyzed statistically. The results showed that B.J.T.A-6  isolates could inhibit the highest growth of S. aureus by using LB fermentation medium. 

Application of Supercritical Technologies in Clean Energy Production

2021 ◽  
pp. 792-821
Author(s):  
Valdimir Anikeev ◽  
Khaled A. M. Gasem ◽  
Maohong Fan
Keyword(s):  
Supercritical Fluids ◽  
Vegetable Oils ◽  
Thermal Cycle ◽  
Environmentally Friendly ◽  
Clean Energy ◽  
Motor Fuels ◽  
The World ◽  
Biodiesel Fuels ◽  
Energy Processes ◽  
Supercritical Technologies

In this chapter the authors seek to acquaint the reader with unusual properties of supercritical fluids, and how these properties are used for various applications in the synthesis of biofuels and the intensification of energy processes and thermal cycles. The review includes the studies of leading scientists from around the world related to effective and environmentally friendly methods and technologies of energy acquisition and conversion involving the synthesis of motor fuels, materials and chemicals, solar energy conversion, and thermal cycle efficiencies using supercritical fluids. A special place in the chapter is occupied by studies of the transformation of vegetable oils, algae, and wood in supercritical alcohols, esters, and water to produce biodiesel fuels and hydrogen.

Application of Supercritical Technologies in Clean Energy Production

2017 ◽  
pp. 588-616
Author(s):  
Vladimir Anikeev ◽  
Khaled A. M. Gasem ◽  
Maohong Fan
Keyword(s):  
Supercritical Fluids ◽  
Vegetable Oils ◽  
Thermal Cycle ◽  
Environmentally Friendly ◽  
Clean Energy ◽  
Motor Fuels ◽  
The World ◽  
Biodiesel Fuels ◽  
Energy Processes ◽  
Supercritical Technologies

In this chapter the authors seek to acquaint the reader with unusual properties of supercritical fluids, and how these properties are used for various applications in the synthesis of biofuels and the intensification of energy processes and thermal cycles. The review includes the studies of leading scientists from around the world related to effective and environmentally friendly methods and technologies of energy acquisition and conversion involving the synthesis of motor fuels, materials and chemicals, solar energy conversion and thermal cycle efficiencies using supercritical fluids. A special place in the chapter is occupied by studies of the transformation of vegetable oils, algae and wood in supercritical alcohols, esters and water to produce biodiesel fuels and hydrogen.

Globalization and interconfessional communications

2001 ◽  
pp. 13-17
Author(s):  
Serhii Viktorovych Svystunov
Keyword(s):  
21St Century ◽  
Global Economy ◽  
Modern World ◽  
The World ◽  
Target Set ◽  
Almost All ◽  
Over Time ◽  
Rapid Appearance

In the 21st century, the world became a sign of globalization: global conflicts, global disasters, global economy, global Internet, etc. The Polish researcher Casimir Zhigulsky defines globalization as a kind of process, that is, the target set of characteristic changes that develop over time and occur in the modern world. These changes in general are reduced to mutual rapprochement, reduction of distances, the rapid appearance of a large number of different connections, contacts, exchanges, and to increase the dependence of society in almost all spheres of his life from what is happening in other, often very remote regions of the world.

Inter-country inequality as a dynamic process and the problem of post-industrial development

2018 ◽  
pp. 5-29 ◽  
Author(s):  
L. M. Grigoryev ◽  
V. A. Pavlyushina
Keyword(s):  
Economic Growth ◽  
Political Institutions ◽  
Industrial Development ◽  
Modern World ◽  
New Approach ◽  
Development Level ◽  
The World ◽  
Long Time ◽  
The Difference ◽  
Post Industrial

The phenomenon of economic growth is studied by economists and statisticians in various aspects for a long time. Economic theory is devoted to assessing factors of growth in the tradition of R. Solow, R. Barrow, W. Easterly and others. During the last quarter of the century, however, the institutionalists, namely D. North, D. Wallis, B. Weingast as well as D. Acemoglu and J. Robinson, have shown the complexity of the problem of development on the part of socioeconomic and political institutions. As a result, solving the problem of how economic growth affects inequality between countries has proved extremely difficult. The modern world is very diverse in terms of development level, and the article offers a new approach to the formation of the idea of stylized facts using cluster analysis. The existing statistics allows to estimate on a unified basis the level of GDP production by 174 countries of the world for 1992—2016. The article presents a structured picture of the world: the distribution of countries in seven clusters, different in levels of development. During the period under review, there was a strong per capita GDP growth in PPP in the middle of the distribution, poverty in various countries declined markedly. At the same time, in 1992—2016, the difference increased not only between rich and poor groups of countries, but also between clusters.

Text Prophetism

2017 ◽  
Vol 7 (1) ◽  
pp. 40
Author(s):  
Elvira Lumi ◽  
Lediona Lumi
Keyword(s):  
Key Words ◽  
Literary Texts ◽  
Modern World ◽  
Greek Mythology ◽  
Divine Inspiration ◽  
Religious Doctrine ◽  
The World ◽  
Poetic Text ◽  
Poetic Diction ◽  
Life On Earth

"Utterance universalism" as a phrase is unclear, but it is enough to include the term "prophetism". As a metaphysical concept, it refers to a text written with inspiration which confirms visions of a "divine inspiration", "poetic" - "legal", that contains trace, revelation or interpretation of the origin of the creation of the world and life on earth but it warns and prospects their future in the form of a projection, literary paradigm, religious doctrine and law. Prophetic texts reformulate "toll-telling" with messages, ideas, which put forth (lat. "Utters Forth" gr. "Forthteller") hidden facts from fiction and imagination. Prometheus, gr. Prometheus (/ prəmiθprə-mee-mo means "forethought") is a Titan in Greek mythology, best known as the deity in Greek mythology who was the creator of humanity and charity of its largest, who stole fire from the mount Olympus and gave it to the mankind. Prophetic texts derive from a range of artifacts and prophetic elements, as the creative magic or the miracle of literary texts, symbolism, musicality, rhythm, images, poetic rhetoric, valence of meaning of the text, code of poetic diction that refers to either a singer in a trance or a person inspired in delirium, who believes he is sent by his God with a message to tell about events and figures that have existed, or the imaginary ancient and modern world. Text Prophetism is a combination of artifacts and platonic idealism. Key words: text Prophetism, holy text, poetic text, law text, vision, image, figure

To the discussion about the modern world order

2020 ◽  
pp. 35-41
Author(s):  
A. Mustafabeyli
Keyword(s):  
Soviet Union ◽  
Intergovernmental Relations ◽  
World System ◽  
Main Tool ◽  
World Order ◽  
Modern World ◽  
The Soviet Union ◽  
The World ◽  
And Behavior ◽  
Second World

In many political researches there if a conclusion that the world system which was founded after the Second world war is destroyed of chaos. But the world system couldn`t work while the two opposite systems — socialist and capitalist were in hard confrontation. After collapse of the Soviet Union and the European socialist community the nature of intergovernmental relations and behavior of the international community did not change. The power always was and still is the main tool of international communication.

Insights in Nanoparticle-Bacterium Interactions: New Frontiers to Bypass Bacterial Resistance to Antibiotics

2015 ◽  
Vol 21 (28) ◽  
pp. 4095-4105 ◽  
Author(s):  
Roudayna Diab ◽  
Bahman Khameneh ◽  
Olivier Joubert ◽  
Raphael Duval
Keyword(s):  
Bacterial Resistance ◽  
Resistance To Antibiotics
Sign in / Sign up

Export Citation Format

Share Document