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Search Results: 1 - 10 of 1298 matches for " Adzitey Frederick "
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Genetic Diversity of Escherichia coli Isolated from Ducks and the Environment Using Enterobacterial Repetitive Intergenic Consensus
Frederick Adzitey
Pakistan Journal of Biological Sciences , 2013,
Abstract: Escherichia coli are mostly free living bacteria that harbour the gastrointestinal tract of poultry. Howbeit, pathogenic Escherichia coli are very important foodborne pathogens that can cause severe complications, illnesses and deaths in humans. The objective of this study was to determine the genetic diversity or relatedness of 62 Escherichia coli strains isolated from ducks and the environment using Enterobacterial Repetitive Intergenic Consensus (ERIC). The analysis of the Escherichia coli strains by ERIC produced DNA bands of different sizes for differentiation purposes and cluster analysis at a coefficient of 0.85 grouped the strains into different clusters and singletons. At this coefficient the Escherichia coli strains were grouped into thirteen clusters and eleven singletons with discriminatory index (D value) of 0.946. The ERIC PCR adapted in this study showed to be a useful genotyping tool for determining the genetic relatedness of the duck Escherichia coli strains. Comparison of the genetic relatedness among foodborne pathogens is important for foodborne diseases outbreak investigations.
Microbial quality of chevon and mutton sold in Tamale Metropolis of Northern Ghana
Adzitey Frederick, Teye G Ayum, Ayim A Gifty, Addy Samuel
Journal of Applied Sciences and Environmental Management , 2010,
Abstract: The microbial quality of 80 meat samples made up of 40 chevon and 40 mutton were collected from the Aboabo, Central-internal, Central-external, and Sakasaka meat shops in Tamale Metropolis and assessed in order to ascertain it safety. Chevon from Aboabo and mutton from the Central market-internal had the highest mean total aerobic bacterial count of 3.9 X 10 6 cfu/cm2 and 3.7 X 106 cfu/cm2 , respectively. The lowest total aerobic count in chevon was found in the Central-internal (6.0 X 105 cfu/cm2) and that of mutton was found in Sakasaka market meat shop (6.0 X 10 5 cfu/cm2). Bacteria isolated from the samples were Escherichia coli, Streptococcus species, Salmonella species , Enterococcus species, and Staphylococcus species, some of which harbor human pathogens of public health concern. The isolation of various bacteria in chevon and mutton sold in the Tamale Metropolis indicates that, lower standard of operating systems in the slaughtering, processing and sale of meats are adhered to. The Government of Ghana, Ministry of Health and Ministry of Food and Agriculture should enforce the laws that prohibit the illegal slaughtering of animals without veterinary inspection, unstandardized methods of handling animals, slaughtering and selling of meats on the open market. @JASEM J. Appl. Sci. Environ. Manage. December, 2010, Vol. 14 (4) 53 - 55
Genotyping of Salmonella strains isolated from ducks, their rearing and processing environments in Penang, Malaysia, using RAPD
Frederick Adzitey,Gulam Rusul Rahmat Ali,Nurul Huda,Rosma Ahmad
3 Biotech , 2013, DOI: 10.1007/s13205-013-0115-7
Abstract: Salmonella species are important foodborne pathogens that can cause illness and death in humans. The objective of this study was to determine the genetic relatedness of 115 Salmonella strains isolated from ducks and their environment using random amplified polymorphic deoxyribonucleic acid (RAPD). The analysis of Salmonella strains by RAPD produced DNA fingerprints of different sizes for differentiation purposes, and cluster analysis at a coefficient of 0.85 grouped the Salmonella strains into various clusters and singletons. S. Typhimurium were grouped into nine clusters and ten singletons, S. Hadar were grouped into seven clusters and nine singletons, S. Enteritidis were grouped into four clusters and five singletons, S. Braenderup were grouped into five clusters and four singletons, S. Albany were grouped into two clusters and seven singletons, and S. Derby were grouped into two clusters and four singletons at a coefficient of 0.85 with discriminatory index (D) ranging from 0.879 to 0.957. With the exception of S. Typhimurium strains which were grouped into three major groups (genotypes) by RAPD analysis, the rest were grouped into two major genotypes. RAPD was a useful genotyping tool for determining the genetic relatedness of the duck Salmonella strains. Comparison of the genetic relatedness among foodborne pathogens and their sources of isolation are important to trace their source and possibly the source of human infection.
Effects of Post-Slaughter Carcass Handling on Meat Quality
F. Adzitey§ and N. Huda*
Pakistan Veterinary Journal , 2012,
Abstract: The quality of meat from the processing plant or as found on the market will have an influence on its processing properties and eating qualities. The processing properties and eating qualities will also influence consumers’ acceptability and profits to be realized by producers, processors and retailers. A number of factors including the genetics of the animal, production practices, age of the animal at slaughter and how live animals are handle prior to and during slaughter contribute significantly to meat quality. Apart from these, post-slaughter practices also influence meat quality to an appreciable extent. In recent times, various processing conditions and addition of ingredients/additives have been manipulated to improve upon the quality of processed meat products. This mini-review discusses the effects of post-slaughter practices on meat quality.
Disequilibrium Pricing Theory—Bubbles and Recessions  [PDF]
Frederick Betz
Theoretical Economics Letters (TEL) , 2014, DOI: 10.4236/tel.2014.41009
Abstract:

How can one track a financial bubble as a likely precursor to bank panics and subsequent recessions? We model the Minsky-Keynes depiction of a financial marketby extending the “equilibrium-price” model to a “disequilibrium-price” model, through adding a third dimension of time. In this way, we use a topological graphic approach to see how the models from the two schools of economics, exogenous and endogenous, relate to each other as complementary models of production and financial sub-systems. These economic models are partial models in an economynot a model of the whole economy. However, such partial models can be used to anticipate financial bubbleshence bank runs and recessions due to bank runswhich typically follow.

Analyses of Physical Data to Evaluate the Potential to Identify Class I Injection Well Fluid Migration Risk  [PDF]
Frederick Bloetscher
Journal of Environmental Protection (JEP) , 2014, DOI: 10.4236/jep.2014.56057
Abstract:

Injection wells have been used for disposal of fluids for nearly 100 years. Design of injection well systems has advanced over the years, but environmental concerns due to the potential for migration of injected fluids remain. Fluids range from hazardous materials, to mining waste to treated wastewater. This paper presents an evaluation of wells injecting treated wastewater to assess which create the greatest risk to migration potential. Prior studies have looked at the risks of Class I injection wells for wastewater disposal, but limited data were available at that time. This research involved collecting data and evaluating the differences as a means to predict the potential for fluid migration in the wells. There were four issues that might portend migration: well depth-shallower wells tended to have more migration; the tightness of the confining unit immediately above the injection zone; well age; and the use of tubing and packers. Florida is moving away from tubing and packer wells which may be an indicative of this issue. The results provide a pathway to investigate injection wells in other states.

Disequilibrium Pricing—Greek Euro Crisis  [PDF]
Frederick Betz
Theoretical Economics Letters (TEL) , 2014, DOI: 10.4236/tel.2014.49113
Abstract: Financial instability in Greece began in 2009 when the interest rates on Greek sovereign bonds surged; and this can be graphed in a “price disequilibrium” model. To explain how this came about, we create a systems-dynamics model of the Greek fiscal system. Government fiscal systems are not a kind of a “causal” system, but a “structural-functional” system instead. This approach is in the spirit of the Keynes-Minsky model of a financial market as a “dynamic” of the value of capital assets. Financial bubbles occur from “perceptions”—cognitive “reflexivity” in Soros’ term—as expectations of the future values in a financial market. The Greek government fiscal crisis is a “Minsky moment”, which occurs at a time when traders in a financial market have moved from speculative finance to the unstable reflexivity in Ponzi finance. The governments in Greece had indulged in the dynamics of a budget policy of “Ponzi finance”. Unsound fiscal policy over many years had accumulated a very large and increasing government debt—until bond market “reflexive cognition” triggered the Greek fiscal crisis in 2010. The “reflexive perception” of bond traders was that either the Greek government must “default” or be “bailed out”.
Private and Public Debt Markets in Disequilibrium Theory  [PDF]
Frederick Betz
Theoretical Economics Letters (TEL) , 2015, DOI: 10.4236/tel.2015.55073
Abstract: In disequilibrium pricing of financial markets, excesses in either public debt or private debt can trigger a financial crisis, with attendant bank panics and recessions. For example, in the Euro crisis beginning in 2010, financial contagion in the sovereign bond market has spread among five nations: Greece, Ireland, Cyprus, Portugal, and Spain. But the reasons for the contagion was initially different for the countries, due to either disequilibrium pricing in public debt markets or disequilibrium pricing in private debt markets. In previous papers, we introduced a time-independent supply-demand model (three-dimensional model) for disequilibrium pricing in financial markets [1] and a steady-state disequilibrium systems model for the run-up of a financial crisis in a public debt market [2]. In this paper we construct a time-dependent disequilibrium systems model for the run-up of financial crises in a private debt market. We analyze the empirical case of the 2010-12 Euro crisis in Spain (private debt crisis) and then compare this to the empirical case of the 2010-2015 Euro crisis in Greece (public debt crisis).
Disequilibrium Systems Representation of Growth Models—Harrod-Domar, Solow, Le-ontief, Minsky, and Why the U.S. Fed Opened the Discount Window to Money-Market Funds  [PDF]
Frederick Betz
Modern Economy (ME) , 2015, DOI: 10.4236/me.2015.612113
Abstract: One of the intriguing puzzles from the Global Financial Crisis of 2007-08 was this one: To save the U.S. economy, why did the U.S. Federal Reserve System (under the chair, Ben Bernanke) open its central bank discount window to the unregulated money-market funds? The discount window of a central bank is usually only open to legitimate banks; and money-market funds are not banks. But the action proved correct, and the crisis slipped into an economic recession and not a depression. Yet how can one theoretically explain Bernanke’s economic reasoning underlying this critical decision? For explanation of that event, we integrate several traditional economic models: 1) the growth models of Harrod-Domar and of Solow, 2) the production-consumption model of Leontief, and 3) Minsky’s price-disequilibrium model. The integration of these models is methodologically possible through a system dynamics representation of the algebraic forms of the traditional economic models. In a system dynamics model, economic flows become explicit, as well as do the connections between institutions. In this explanation, we see evidence for the economic postulate that: it is financial crises which trigger depressions and not production business-cycles. Production business-cycles trigger recessions.
Model of the International Financial Grid and the Panama Papers  [PDF]
Frederick Betz
Theoretical Economics Letters (TEL) , 2017, DOI: 10.4236/tel.2017.74056
Abstract: One of the advantages of empirically-grounded theory is to provide a deeper understanding of natural events. This is true both of the physical and social sciences, and especially of economic theory. We examine an empirical event in economics in 2016, called the “Panama Papers. Reports on the event provide material for an empirical case study about the international financial grid, focused upon the use of dummy corporations in “dark money” international-capital-flows. We analyze the case though a topological model of the international financial grid.
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