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    Wyświetlanie 1-5 z 5
    Tytuł:
    Bacteriological profile of cut fruits sold in Calabar Metropolis
    Autorzy:
    Edeghor, U.
    John, G. E.
    Origbu, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/1076796.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Calabar Metropolis
    Foodborne illness
    Fruits
    Microbial contaminants
    Pathogens
    Opis:
    The increase in cases of food borne illnesses related to street vended fruit salad in developing countries is of serious public health concern. This study was, therefore, conducted on street-vended fruit salad, to determine their microbial quality. A total of twenty (20) fruit samples, comprising five each of fresh Apple (Malus domestica Borkh), Pineapple (Ananas comosus L.), Pawpaw (Carica papaya) and Watermelon (Citrullus lanatus) were collected from 3 different locations (Watt, Marian and Goldie) in Calabar and were evaluated by way of standard plate techniques, for microbial contaminants. The specific microbial genera were enumerated on appropriate selective media and identified using standard identification parameters with the aid of identification and taxonomic manuals. The results revealed that the mean total bacterial counts of all the fruit samples ranged from 1.07 × 103 to 3.4 × 103CFU/g, whereas, the mean total coliform counts ranged from 0.9 × 103 to 2.05 × 103 CFU/g, respectively. The differences in the mean total heterotrophic counts and coliform counts recorded for the fruits collected from the respective food vendors was statistically insignificant (P>0.01). Bacteria isolated include Staphylococcus aureus, Pseudomonas aeruginosa, Salmonella sp, Shigella sp, Proteus mirabilis and Escherichia coli. The presence of coliform bacteria and other microbial contaminants in numbers exceeding the recommended microbiological standards is a reflection of unwholesome product, hence the need for proper microbiological safety analysis of fruit salad prepared for human consumption. Therefore, consumer’s awareness on the dangers of consuming pathogen contaminated foods and the need to insist on properly processed/stored sliced produce, needs to be re-awakened.
    Źródło:
    World News of Natural Sciences; 2019, 23; 43-55
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect on magnetic properties of zinc doped nano ferrites synthesized by precursor or metod
    Autorzy:
    Anjaneyulu, T.
    Murthy, P. N.
    Rafi, Sk. Md.
    Bademiya, Sk.
    John, G. S.
    Powiązania:
    https://bibliotekanauki.pl/articles/412213.pdf
    Data publikacji:
    2013
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Nanoferrites
    Cu-Zn ferrite
    Precursor Method
    Magnetic properties
    Opis:
    Nanocrystalline Cu-Zn ferrites have been synthesized using precursor method. Cu-Zn ferrites were formed at low temperature without any impurities. The particle sizes were observed to decrease from 60 nm to 50 nm with increasing non-magnetic Zn doping. Cu is used to decrease the sintering temperature. The X-ray diffraction (XRD) and IR analysis of Cu-Zn revealed the formation of Single-Phase Spinel structure at very low annealing temperature. The particle sizes observed from XRD is very well in agreement with SEM analysis. Cu-Zn ferrite nanoparticles were observed to be dependent on the particle size. Saturation (Ms) and Remanence (Mr) magnetization of ferrites increases due to the modifications occurred among the A-B, A-A and B-B interactions of Spinel structure. The Coercive force (Hc) decreases with increase of Zn ions concentration.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2013, 14; 37-43
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bacteriological quality assessment of two sources of water supplies in Mubi, North-eastern Nigeria
    Autorzy:
    Tula, M. Y.
    Onyeje, G. A.
    John, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1162572.pdf
    Data publikacji:
    2018
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Bacteriological
    Coliform
    Heterotrophic plate count
    Mubi
    water supplies
    Opis:
    Water is essential for all life forms and the provision of safe drinking water to the populace cannot be overemphasized. This study examined the bacteriological quality of two sources of water supplies in Mubi, North-eastern Nigeria. A total of 72 water samples were analysed. These include 30 from 10 brands of sachet water and 42 from 21 boreholes in seven different wards of Mubi. Heterotrophic plate count (HPC) was determined by pour plate technique and the total coliform count was determined by 3-3-3 regimen using most probable number (MPN) technique. Escherichia coli and other isolates were identified by standard protocols. The mean HPC for both borehole and sachet water samples were variable and ranged from 3.3 × 102 – 4.7 × 104 cfu/ml for sachet water and 1.1 – 6.0 × 104 cfu/ml for borehole water samples. The HPC of borehole water samples were significantly higher than those of sachet water (P = 0.006). The results showed that the mean MPN index for sachet water samples from brand HCM, KGN, OYM and YNS were zero (0). Brand UDS had the highest mean MPN index (1966.7), while other brands had low mean MPN index that ranged from 3.0 -9.1. In the same vein, the mean MPN index of borehole water samples were high, variable and ranged from 3.7 – 1750. Statistically, the mean MPN index/100ml of borehole water samples were significantly higher than those of sachet water samples (P = 0.006). A total of 49 non-repetitive bacterial species were isolated from the two sources of water. These include E. coli (30), Enterobacter spp (3), P. aeruginosa (5) and Citrobacter spp (11). The distributions of bacterial isolates from the two sources of water showed that E. coli was detected in two brands of sachet water SDK and DYJ and 20 representative boreholes in all the locations, while other organisms were variably distributed. The presence of these organisms constitutes public health significance.
    Źródło:
    World Scientific News; 2018, 111; 100-110
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Development of an Online Crime Management & Reporting System
    Autorzy:
    Ganiron Jr, Tomas U.
    Chen, John Stephen
    Dela Cruz, Ronalyn
    Pelacio, Jeromme G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1066218.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Biometric
    crime management
    online
    reporting system
    software quality
    Opis:
    Nowadays, much of the crimes committed were unreported to the authorities. Given this fact, the study presents the development of a Crime Management and Reporting System through online and even offline and at the same time is the active participation of the citizens. The idea draws its motivation from the inconvenience of going to the police station and personal belief of the weak investigative capabilities of the authorities to resolve petty crimes and limited spreading of crime information to the community. The project specifically looks into the crime detection and prevention. This study aims to provide an overview of the investigative process and, in doing so, identify effective and efficient approaches to the investigation and detection of the volume of crimes. The review is particularly aimed to highlight the research evidence those investigative practices and actions that are likely to lead to a positive outcome. The development of software includes the process of brainstorming and planning, requirements analysis, system analysis and designs, implementation and testing, deployment, and maintenance. The criteria of evaluation of software quality were adapted in ISO/IEC 25010:20011. This also shows that distance is also a factor that influences greatly how crimes are being handled with many crimes going unreported as a result. Crime Management and Reporting System would really help the complainant and the authority to communicate privately and easily with regards to the reported issue. In addition, it would be easier for the complainant to report a witnessed crime without the fear of getting involved in the problems because of the security that the only authorized user can see the report. Based on the findings, the researchers recommend the following for further study: widening the limit of the system by considering other cities; a generic platform for keeping human records from birth till death, deploying this sort of platform will serve as a source of information on persons from various states within the country and even those outside. Verification using Biometric is highly recommended to enhance the security of data stored in the system. This increases the restriction on access to the system, thus unauthorized users have no access to the system. Face recognition technology can be added.
    Źródło:
    World Scientific News; 2019, 131; 164-180
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Insect antifeedant potent halogen substituted phenyl chalcones
    Autorzy:
    Sundararajan, R.
    Arulkumaran, R.
    Vijayakumar, S.
    Kamalakkannan, D.
    Suresh, R.
    John, J. S.
    Ranganathan, K.
    Sakthinathan, S. P
    Vanangamudi, G.
    Thirunarayanan, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/412081.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Substituted styryl 2′,3′,4′-trichlorophenyl ketones
    sulfated Titania
    IR and NMR spectra
    Insect antifeedant activities
    Opis:
    Some 2′,3′,4′-trichlorophenyl chalcones [(E)-1-(2,3,4-trichlorophenyl)-3-(substituted phenyl)-2-propen-1-ones] have been synthesised using sulfated Titania catalyzed solvent-free aldol condensation between 2,3,4-trichloroacetophenone and substituted benzaldehydes. The purities of synthesised chalcones were checked by their analytical, physical and spectroscopic data reported in literature. The insect antifeedant activities of these chalcones have been studied using 4th instar larvae Achoea Janata L by castor leaf disc bio-assay method. The chloro substituted chalcones shows significant insect antifeedant activity.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 1; 67-73
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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