International Annals of Science
Not a member yet
110 research outputs found
Sort by
Determination of Ascorbic Acid Concentration of Some Commercial Fruits Juices Sold in Ugbokolo Benue State, Nigeria
Get PDFThis research was aimed at investigating the concentration of Ascorbic Acid (Vitamin C) in some commercial fruits juices: ‘5’ Alive, Hollandia yoghurt, Nutri milk, Ribena, Lacasera, Happy hour, Viju milk, Chi exotic and Chi vita sold in Ugbokolo, Benue State, Nigeria by titrimetric method using 2,6-dichlorophenolindophenol (DCPIP) as titrant. The ascorbic acid (AA) content in milligram per 100ml of the various juices investigated is in the order: ‘5’ Alive (11.25) > Ribena (5.47) > nutri milk (5.31) > Happy hour (4.38) > Hollandia yoghurt (1.25) > Lacasera (0.47) ≈ Chi exotic (0.47) >Viju milk (0.31) > Chi vita (0.16). It was observed that half a litre of ‘5’ Alive (56.25 mg AA) a day is suitable for adults and pregnant women, a litre each of Ribena (54.70 mg AA) and Nutri milk (53.10 mg AA) per day for adults, while a litre of Happy hour (43.80 mg AA) per day is suitable for adolescents. It can be concluded that commercial fruits juices when taken in large amount will add to the daily human dietary intake of the vitamin
Determining Chemical Composition of Cattle Urine and Indigenous Plant Extracts
Get PDF The study was conducted to determine the specific chemical constituents of cattle urine and indigenous plant extracts. Chemical analysis revealed that the specific chemical composition i.e., chloride, sulphate, nitrite and phosphorus pentaoxide contents of fresh and fermented cattle urine were 1556, 364, 2.0, 26.8 and 4514, 252, 22.4, 7.49 mg l-1, respectively. The proximate chemical compositions of neem seed kernel extracts, mahagoni seed extracts and allamanda leaves extracts were analyzed and it was found to contain chloride (144, 55.4, 141 mg l-1), sulphate (51.1, 5.03, ˂4.0 mg l-1), nitrite (˂1.0, ˂1.0, ˂1.0 mg l-1) and phosphorus pentaoxide (413, 410, 49.5 mg l-1), respectively. Chloride and nitrite in fermented cattle urine (4514 and 22.4 mg l-1) was found extremely higher than in fresh cattle urine (1556 and 2.0 mg l-1). There was numerically higher difference in sulphate and phosphorus pentaoxide concentrations in fresh cattle urine (364, 26.8 mg l-1) compared to fermented cattle urine (252, 7.49 mg l-1).These results revealed that indigenous plant extracts of neem seed kernel, mahagoni seed and allamanda leaves contents chloride, sulphate and nitrite were extremely lower than in both fresh and fermented cattle urine but there were great difference in phosphorus pentaoxide concentration (413, 410, 49.5 mg l-1) in both fresh and fermented cattle urine (26.8, 7.49 mg l-1) composition. It was evident from this study that as the fermented cattle urine contained higher concentration of chloride and nitrite can be considered as a good means of insect pest management
Impact of Effective Microorganisms on the Microbiological and Physicochemical Parameters of Produced Water
Get PDFThe study investigated the impact of effective microorganisms on the microbiological and physicochemical parameters of produced water. Produced water was obtained from Ebocha oil field within Rivers state. The spread plate method was used to determine the total heterotrophic bacterial counts, and pure isolates were subjected to biochemical characterization. Pure bacterial suspension of Lactobacillus plantarum, Aspergillus sp. and Penicillium italicum were obtained and subsequently inoculated into wastewater sample in consortium. Treated (with the consortium) wastewater sample was analyzed at interval for their physicochemical and microbiological parameters during the appropriate period of incubation (14 days) at room temperature. The bacterial load of produced water decreased from 1.3 x 108 cfu/ml to 3.6 x 107 cfu/ml, coliform counts increased from 2.0 x 105 cfu/ml to 1.4 x 106 cfu/ml, Staphylococcal counts decreased from 3.4 x 105 cfu/ml to 0 cfu/ml and Vibrio counts decreased from 8.0 x 105 cfu/ml to 2.0 x 105 cfu/ml. Biochemical characterization of bacterial isolates from the wastewater revealed the presence of Enterobacter sp, Bacillus sp, Klebsiella sp, Proteus sp, Escherichia coli and Staphylococcus sp. The pH and temperature ranges of water sample during the period of treatment varied. The BOD values decreased from 240 mg/L to 21 mg/L while the COD values decreased from 400 mg/L to 160 mg/L. The results of the heavy metal assessment revealed an appreciable reduction in the heavy metal concentrations of the sample. The concentration of zinc in produced water decreased from 0.113 mg/L to an undetectable level (< 0.01 mg/L), iron concentration decreased from 1.071 mg/L to 0.139 mg/L, Nickel decreased from 2.110 mg/L to 1.081 mg/L while copper and cadmium were undetected. The use of effective microorganisms in the treatment of produced water was effective in the reduction of microbial load, biochemical oxygen demand (BOD), chemical oxygen demand (COD) and removal of heavy metals
Color Origins in Langatate Crystals
Get PDFLangatate La3Ga5.5Ta0.5O14 is piezoelectric crystal from langasite family, commonly grown by Czochralski method from Ir crucible. Langatate crystals of different colors (colorless, orange, green) have been studied by optical spectroscopy in UV-Visible (200 – 800 nm) and IR (7000 – 1000 cm-1) ranges. Furthermore, the effects of irradiation by ultraviolet laser source (λ=266 nm) and post-growth annealing in N2+O2 atmosphere have been investigated. The yellow-orange is mainly due to an absorption centered in the ultraviolet that extends into the blue of the visible spectrum (250-500 nm). The IR optical absorption spectra of Langatate crystals exhibit an absorption band at 5370 cm-1. It seems linked to a point defect responsible for color. The intensity of the absorption band at 3430 cm-1 increases after annealing in oxygen containing atmosphere. We have discussed phenomenon that can occur simultaneously in langatate crystals and produce very similar colors which are related to structural defects. First, metal ions impurities (as Iron, Titanium…), whose presence is previously confirmed by femtosecond laser ablation coupled with ICP-MS spectroscopy, can contribute to langatate color. Second, ultraviolet absorption leads us to think about charge transfer phenomenon such as O2- → Fe3+ and/or Fe3+-Fe3+ pair transitions. Third, the irradiation by ultraviolet (λ=266 nm) laser source locally color the langatate sample by the creation of color centers. Origins of color centers, particularly those related to oxygen vacancies, ( , 2e′)x, are discussed. And, finally, point defects changes the band gap of langatate, leading to extend the absorption to visible light regions
A New Multidisciplinary Journal; International Annals of Science
Get PDFThe launch of International Annals of Science is motivated primarily by the rapid advances in cross-disciplinary research. International Annals of Science will serve as a forum for novel research featuring interdisciplinary and multidisciplinary areas across Physical Science, Chemical Science, Life Science, Computer Science, Environmental Science, Earth Science, Mathematics, and Engineering. This journal will follow the article-based publishing model with two volumes per year, which allows immediate publication of the final version of the article without waiting for other articles to be compiled into a full issue
Pro-embrionary Somatic Structure of Three Cacao Genotypes (Theobroma Cacao l.) Using Staminodes
Get PDFStaminodes of three cocoa genotypes (BT1, ICS-39 and CCN-51), were used to perform the characterization of somatic embryos induced and maintained by DKW culture medium enriched with 2% of sucrose, 10% of coconut water and 0.01% of cysteine, 2,5 mg/l 2,4 D, 5 µg/lTDZ respectively. The ANOVA and the comparison mean test, shown significant differences between globular-, heart-, torpedo- and cotyledonal-stages for each genotype. Additionally, the embryogenic stages and regenerants plants proportions were highest for Blanco Tarapotino 1 (BT1) genotype. A morphological comparison of somatic and zygotic embryos shows similarities in form and symmetry
Radon in the Dwellings: Causes and Prevention
Get PDFThe problem of radon in dwellings gained importance in 1984 after an incidence in Pennsylvania, USA; thereafter several measuring techniques have been developed and national survey programs were started throughout the world for monitoring radon levels by government authorities. The lots of work have done by researchers in this field throughout the world. Several developed countries have given guidelines for initiating action to reduce radon levels if found beyond permissible level. The main aim of this article to provide public awareness about the health hazards posed by radon, which is naturally occurring invisible inert gas in the dwellings that is not be detected by human senses
Spatio-Temporal Variation Study of Physico -Chemical Parameters Characterizing Water Quality of Oued M’zab Region, Algeria
Get PDFoai:ojs2.journals.aijr.org:article/70This work involves the study of hydrological characteristics of the groundwater of Oued M'zab, due to the domestic, agricultural, and industrial pollution. The different sampling points are located upstream and downstream of the river. Water samples of groundwater were taken monthly at stations spread over the flow of the river. The wells are distributed throughout the course of the flow of the river. The measured hydrological parameters (temperature, salinity, suspended particles) showed significant monthly variations with a high concentration of total suspended solids which reached 71.72 mg \ l. The same results indicate that the groundwater is rich in minerals and nutritious elements while on the set of sampled points only salinity showed significant variations. The maximum value of the sulphate with a concentration of approximately 2597mg \ l. The chlorides and sodium concentrations reach respectively the values of 1633 mg \ l and 1970 mg \ l. This indicates that the infiltration of water of M'zab contains several pollutants contributing to the degradation of the quality of groundwater, Hence the need for preventive measures, conservative and prospects to preserve our layer from pollution
Laser Irradiation Effect on the Optical Band Gap of Se-Te-Al Thin Films
Get PDFLaser irradiation effect on the optical band gap of Se-Te-Al thin films has been studied. Optical data Analysis of thin films indicates indirect allowed transition in the Se-Te-Al system. Analysis of the result reveals that the optical band gap decreases with increasing irradiation time as well as Aluminum content. However, laser irradiation does not show a significant effect at higher Aluminum concentration. It might be due to lack of weak Se-Te bond as Te content decreases with increasing Al content. It shows that alloy with rich Al content is more stable against laser irradiation. It is also observed that absorption coefficient and extinction coefficient increases with laser irradiation time
Existence and Stability of the Libration Points in the Circular Restricted Three Body Problem with Variable Masses
Get PDFWe have investigated the existence and stability of the libration points in the circular restricted three body problem with the variation of all the masses (primaries and infinitesimal body) with time. We have used the Meshcherskii transformation for finding the autonomized equations of motion and found at most nine libration points. We have drawn the zero velocity curves and Poincare surface of sections for the different values of parameter k. Finally, we have checked the stability and found that all the libration points are unstable