Pub Date : 2024-07-12DOI: 10.9734/ajopacs/2024/v12i3227
Berto D. Marcedonio, Mary Jane Madario, Flyndon Mark S. Dagalea, Judy Ann H. Brensis, M. G. Vicencio
Bacterial infection is not only a nationwide problem but a global health concern facing communities and populations across the world. The impact of bacterial infections extends beyond just the health sectors, affecting economies, healthcare systems, and overall societal well-being. This study developed and evaluate ointment from Hyptis capitata Jacq. (Burunganon) flower crude extract and its antibacterial potential. The phytochemical screening was to determine the presence of Alkaloids, phenolic, and cardiac glycosides. The physicochemical properties were analyzed to determine their appearance, homogeneity, odor, pH, spreadability, and water number, and the antibacterial properties were determined. Results showed that the Burunganon flower crude extract revealed the presence of alkaloids, flavonoids, phenolic and cardiac glycoside. Result in physicochemical screening of the formulated ointment showed that it had a yellowish color, good homogeneity, menthol like fragrance, slightly acidic, had a good spreadability, and the base had a good absorption of water. Meanwhile, the formulated ointment from burunganon flower crude extract showed inhibitory effect against E. coli and P. aeruginosa. Therefore, the Burunganon flower crude extract showed a presence of secondary metabolites that can be used in a wide range of pharmaceutical application, a promising candidate for development of bacterial agents, providing a natural and potentially effective alternative for combatting infections. Additionally, it shows that it has an good physicochemical properties that can be used in development of bactericidal ointment. More physicochemical test, different base used in formulation, further characterization, and incorporation of antibacterial were recommended.
{"title":"Extraction, Evaluation, and Formulation of Hyptis capitata Jacq. (Burunganon) Flower Crude Extract as Bactericidal Ointment","authors":"Berto D. Marcedonio, Mary Jane Madario, Flyndon Mark S. Dagalea, Judy Ann H. Brensis, M. G. Vicencio","doi":"10.9734/ajopacs/2024/v12i3227","DOIUrl":"https://doi.org/10.9734/ajopacs/2024/v12i3227","url":null,"abstract":"Bacterial infection is not only a nationwide problem but a global health concern facing communities and populations across the world. The impact of bacterial infections extends beyond just the health sectors, affecting economies, healthcare systems, and overall societal well-being. This study developed and evaluate ointment from Hyptis capitata Jacq. (Burunganon) flower crude extract and its antibacterial potential. The phytochemical screening was to determine the presence of Alkaloids, phenolic, and cardiac glycosides. The physicochemical properties were analyzed to determine their appearance, homogeneity, odor, pH, spreadability, and water number, and the antibacterial properties were determined. Results showed that the Burunganon flower crude extract revealed the presence of alkaloids, flavonoids, phenolic and cardiac glycoside. Result in physicochemical screening of the formulated ointment showed that it had a yellowish color, good homogeneity, menthol like fragrance, slightly acidic, had a good spreadability, and the base had a good absorption of water. Meanwhile, the formulated ointment from burunganon flower crude extract showed inhibitory effect against E. coli and P. aeruginosa. Therefore, the Burunganon flower crude extract showed a presence of secondary metabolites that can be used in a wide range of pharmaceutical application, a promising candidate for development of bacterial agents, providing a natural and potentially effective alternative for combatting infections. Additionally, it shows that it has an good physicochemical properties that can be used in development of bactericidal ointment. More physicochemical test, different base used in formulation, further characterization, and incorporation of antibacterial were recommended.","PeriodicalId":8541,"journal":{"name":"Asian Journal of Physical and Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141654015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-15DOI: 10.9734/ajopacs/2024/v12i3226
Amadou Kane, Issa Samb, Cheikh Ahmed Tidiane Ndiaye, Silver Boucar Diouf, Saloly Ndiaye, Seydina Cheikhou Omar Ly, Mohamed Lamine Gaye
Sulfur dioxide is an acidifying gaseous pollutant. It contributes to the acidification of the environment. When emitted into the air and in the presence of water, sulfur dioxide forms sulfuric acid, which contributes to the phenomenon of acid rain. Acidifying substances disrupt the composition of air, surface water and soil. Sulphur dioxide (SOx) emissions are closely linked to the use of fuels containing sulphur, and the maximum permitted sulphur content is one of the most closely monitored fuel parameters. In this article, we determined the sulfur content of gasoline samples taken from four service stations belonging to the most representative groups in terms of light petroleum product distribution in Senegal. The aim is to assess the environmental impact of sulfur dioxide emissions resulting from the use of gasoline by vehicles, and to reduce upstream sulfur content.
{"title":"Determination of the Sulfur Content of Gasoline from Four Major Fuel Distributors in Dakar","authors":"Amadou Kane, Issa Samb, Cheikh Ahmed Tidiane Ndiaye, Silver Boucar Diouf, Saloly Ndiaye, Seydina Cheikhou Omar Ly, Mohamed Lamine Gaye","doi":"10.9734/ajopacs/2024/v12i3226","DOIUrl":"https://doi.org/10.9734/ajopacs/2024/v12i3226","url":null,"abstract":"Sulfur dioxide is an acidifying gaseous pollutant. It contributes to the acidification of the environment. When emitted into the air and in the presence of water, sulfur dioxide forms sulfuric acid, which contributes to the phenomenon of acid rain. Acidifying substances disrupt the composition of air, surface water and soil. \u0000Sulphur dioxide (SOx) emissions are closely linked to the use of fuels containing sulphur, and the maximum permitted sulphur content is one of the most closely monitored fuel parameters. In this article, we determined the sulfur content of gasoline samples taken from four service stations belonging to the most representative groups in terms of light petroleum product distribution in Senegal. The aim is to assess the environmental impact of sulfur dioxide emissions resulting from the use of gasoline by vehicles, and to reduce upstream sulfur content.","PeriodicalId":8541,"journal":{"name":"Asian Journal of Physical and Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141337467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-10DOI: 10.9734/ajopacs/2024/v12i2224
Gabriel Barceló
Over the last forty years we have conducted a methodical investigation process with a view to better understanding the behavior of rigid solid bodies that are simultaneously subject to accelerations owing to non-coaxial rotations. We have taken part in a long and complex investigation and examination procedure by way of applying the scientific method to try and explain our observations that are not in keeping with the accepted paradigm or pattern.
{"title":"Dynamics of Planets and Other Celestial Bodies","authors":"Gabriel Barceló","doi":"10.9734/ajopacs/2024/v12i2224","DOIUrl":"https://doi.org/10.9734/ajopacs/2024/v12i2224","url":null,"abstract":"Over the last forty years we have conducted a methodical investigation process with a view to better understanding the behavior of rigid solid bodies that are simultaneously subject to accelerations owing to non-coaxial rotations. We have taken part in a long and complex investigation and examination procedure by way of applying the scientific method to try and explain our observations that are not in keeping with the accepted paradigm or pattern.","PeriodicalId":8541,"journal":{"name":"Asian Journal of Physical and Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141361152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-07DOI: 10.9734/ajopacs/2024/v12i2223
G. A. Sotade, Samuel Ifidon Ojeaburu, Ozi Salami Abdulrahim Onimisi, Ahmed U. Otokiti, Paul Temidayo Duile, A. Azees, Rotimi Elijah Abioye, Victor A. C. Biodun
Enantia chlorantha (EC) is a dense forest tree found in the Eastern and Southern forests of Cameroon, Southern part of Nigeria, Gabon, Guinea, Ivory Coast, Liberia, Angola (Cabinda) and DR Congo (Province Bas-Congo) and it is mostly used for the treatment of malaria and typhoid fever. Despite its widespread use, the phytochemical and the Gas Chromatography-Mass Spectrometry (GC-MS) analysis remains largely undetermined. This study was carried out with the aim to evaluate the phytochemical composition of EC. The proximate and phytochemical tests were carried out using standard methods while the identification and the quantification of the bioactive components were determined by GC-MS single-phase ion mode and the spectra from THE detected compounds were matched with known compounds of the National Institute of Standards and Technology (NIST). The proximate analysis reveals that the plant is richest in crude fibre (47.30 ± 0.54% by dry mass), followed by total carbohydrate (28.13 ± 0.43%), crude protein (9.67 ± 0.32%), moisture content (8.30 ± 0.54%), ash content (3.00 ± 0.24%) and lastly lipids (1.60 ± 0.04%). The qualitative phytochemical composition reveals the presence of alkaloids, cardiac glycosides, flavonoids, steroids and trace amount of tannins. Forty-seven (47) bioactive chemical constituents and forty (40) fatty acid compounds were identified by GC-MS. These include Oleic acid (17.70 %), n-Hexadecanoic acid (9.31%), 1-Hexyl-2-nitrocyclohexane (3.71%), Kauran-18-al, 17-(acetyloxy)-, (4. beta.) - (3.05%) as the predominant. The study revealed that Enantia chlorantha could be a useful source of nutrients and the bioactive chemical constituents may serve as potential drug target needed for drug discovery and development to cure a particular ailment and the brand of the carbonated drink may also be used as solvent of choice apart from water and alcohol.
{"title":"Proximate, Phytochemical and Gas Chromatography-mass Spectrometry (GC-MS) Analysis of the Carbonated Drink (Soft drink) Extract of Enantia chlorantha Stem Bark","authors":"G. A. Sotade, Samuel Ifidon Ojeaburu, Ozi Salami Abdulrahim Onimisi, Ahmed U. Otokiti, Paul Temidayo Duile, A. Azees, Rotimi Elijah Abioye, Victor A. C. Biodun","doi":"10.9734/ajopacs/2024/v12i2223","DOIUrl":"https://doi.org/10.9734/ajopacs/2024/v12i2223","url":null,"abstract":"Enantia chlorantha (EC) is a dense forest tree found in the Eastern and Southern forests of Cameroon, Southern part of Nigeria, Gabon, Guinea, Ivory Coast, Liberia, Angola (Cabinda) and DR Congo (Province Bas-Congo) and it is mostly used for the treatment of malaria and typhoid fever. Despite its widespread use, the phytochemical and the Gas Chromatography-Mass Spectrometry (GC-MS) analysis remains largely undetermined. This study was carried out with the aim to evaluate the phytochemical composition of EC. The proximate and phytochemical tests were carried out using standard methods while the identification and the quantification of the bioactive components were determined by GC-MS single-phase ion mode and the spectra from THE detected compounds were matched with known compounds of the National Institute of Standards and Technology (NIST). The proximate analysis reveals that the plant is richest in crude fibre (47.30 ± 0.54% by dry mass), followed by total carbohydrate (28.13 ± 0.43%), crude protein (9.67 ± 0.32%), moisture content (8.30 ± 0.54%), ash content (3.00 ± 0.24%) and lastly lipids (1.60 ± 0.04%). The qualitative phytochemical composition reveals the presence of alkaloids, cardiac glycosides, flavonoids, steroids and trace amount of tannins. Forty-seven (47) bioactive chemical constituents and forty (40) fatty acid compounds were identified by GC-MS. These include Oleic acid (17.70 %), n-Hexadecanoic acid (9.31%), 1-Hexyl-2-nitrocyclohexane (3.71%), Kauran-18-al, 17-(acetyloxy)-, (4. beta.) - (3.05%) as the predominant. The study revealed that Enantia chlorantha could be a useful source of nutrients and the bioactive chemical constituents may serve as potential drug target needed for drug discovery and development to cure a particular ailment and the brand of the carbonated drink may also be used as solvent of choice apart from water and alcohol.","PeriodicalId":8541,"journal":{"name":"Asian Journal of Physical and Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141371489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-22DOI: 10.9734/ajopacs/2024/v12i2222
B. Dianda, Labayè Yves Japhet Koussoubé, Lareba Adélaïde Ouédraogo, M. Ousmane, D. Bathiébo
Post-harvest losses represent a significant cause of food insecurity worldwide. These losses not only affect the availability of food, but they also impact the economic stability of farmers and communities dependent on these crops. Food drying presents itself as a viable solution to reduce these post-harvest losses and ensure greater availability of food for human consumption. It is in this context that our work on the creation of an indirect solar dryer with forced convection, integrating an automatic temperature control system, takes place. This study consisted of creating a prototype and subsequently carrying out drying experiments on onions in order to evaluate the performance of the device. Our experiments took place from October 25 to October 29, 2023 at Joseph KI-ZERBO University. After 8 hours of drying, only 12% of the initial mass of the onions remained. The solar thermal collector presented an efficiency of 62%. And a drying efficiency, estimated at 17% with an average sunshine of 600W/m2.
{"title":"Realization and Experimental Study of a Forced Convection Solar Dryer","authors":"B. Dianda, Labayè Yves Japhet Koussoubé, Lareba Adélaïde Ouédraogo, M. Ousmane, D. Bathiébo","doi":"10.9734/ajopacs/2024/v12i2222","DOIUrl":"https://doi.org/10.9734/ajopacs/2024/v12i2222","url":null,"abstract":"Post-harvest losses represent a significant cause of food insecurity worldwide. These losses not only affect the availability of food, but they also impact the economic stability of farmers and communities dependent on these crops. Food drying presents itself as a viable solution to reduce these post-harvest losses and ensure greater availability of food for human consumption. It is in this context that our work on the creation of an indirect solar dryer with forced convection, integrating an automatic temperature control system, takes place. This study consisted of creating a prototype and subsequently carrying out drying experiments on onions in order to evaluate the performance of the device. Our experiments took place from October 25 to October 29, 2023 at Joseph KI-ZERBO University. After 8 hours of drying, only 12% of the initial mass of the onions remained. The solar thermal collector presented an efficiency of 62%. And a drying efficiency, estimated at 17% with an average sunshine of 600W/m2.","PeriodicalId":8541,"journal":{"name":"Asian Journal of Physical and Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140676738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-19DOI: 10.9734/ajopacs/2024/v12i2221
Shrilekha S. Mutyala, Urvashi P. Manik, Paritosh L. Mishra
The Manuscript aims to show the noticeable and remarkable nature of intermolecular interaction that exists in the aqueous solution of Vitamin C + Glucose/Glycine at 2 MHz frequency. The Major data of ultrasonic velocity and density in Vitamin C+ Glucose /Glycine at various temperatures like (283K-298K) at different concentrations ranging from (0.02 to 0.2 Mol/kg). Experiment data have been used to evaluate some important parameters like Adiabatic compressibility, acoustic impedance, Relative Association, Relaxation strength, Internal pressure, and solubility Parameters which provide valuable information. The result explains the structure-making breaking tendency and confirms the existence of solute-solvent interaction in (Vitamin C+ Glucose + H2O) rather than (Vitamin C + Glycine + H2O) because of the H-bonding present in their solution. A higher mass fraction is given stronger molecular interaction. According to these the proper combination of Vitamin C + glucose repair the human body cell and fast recovery from disease.
这篇论文旨在以 2 MHz 频率显示维生素 C + 葡萄糖/甘氨酸水溶液中存在的分子间相互作用的显著性。在不同温度（283K-298K）、不同浓度（0.02-0.2 Mol/kg）下，维生素 C+ 葡萄糖/甘氨酸的超声波速度和密度的主要数据。实验数据用于评估一些重要参数，如绝热可压缩性、声阻抗、相对联系、松弛强度、内压和溶解度参数，这些参数提供了有价值的信息。 结果解释了结构形成的破坏趋势，并证实了（维生素 C + 葡萄糖 + H2O）中存在溶质-溶剂相互作用，而不是（维生素 C + 甘氨酸 + H2O），因为它们的溶液中存在 H 键。质量分数越高，分子间的相互作用越强。因此，维生素 C + 葡萄糖的适当组合能修复人体细胞，并快速从疾病中恢复过来。
{"title":"Thermo-Acoustical Study of Ascorbic Acid Interactions in Aqueous Solutions with Glycine and Glucose","authors":"Shrilekha S. Mutyala, Urvashi P. Manik, Paritosh L. Mishra","doi":"10.9734/ajopacs/2024/v12i2221","DOIUrl":"https://doi.org/10.9734/ajopacs/2024/v12i2221","url":null,"abstract":"The Manuscript aims to show the noticeable and remarkable nature of intermolecular interaction that exists in the aqueous solution of Vitamin C + Glucose/Glycine at 2 MHz frequency. The Major data of ultrasonic velocity and density in Vitamin C+ Glucose /Glycine at various temperatures like (283K-298K) at different concentrations ranging from (0.02 to 0.2 Mol/kg). Experiment data have been used to evaluate some important parameters like Adiabatic compressibility, acoustic impedance, Relative Association, Relaxation strength, Internal pressure, and solubility Parameters which provide valuable information. The result explains the structure-making breaking tendency and confirms the existence of solute-solvent interaction in (Vitamin C+ Glucose + H2O) rather than (Vitamin C + Glycine + H2O) because of the H-bonding present in their solution. A higher mass fraction is given stronger molecular interaction. According to these the proper combination of Vitamin C + glucose repair the human body cell and fast recovery from disease.","PeriodicalId":8541,"journal":{"name":"Asian Journal of Physical and Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140685712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-13DOI: 10.9734/ajopacs/2024/v12i1219
Igomah, G.O, Osahon, O, Eze, B.E, Ekong, I. B, Azogor, W.E
Human exposure to ionizing radiation from natural and artificial sources is unpreventable phenomenon on earth. Radiation profile and dose at for some markets in Cross River State, Nigeria have been ascertained using 451p ion chamber survey meter and the following indices of radiation absorb dose, annual effective dose equivalent, and excess life cancer risk, were calculated. the dose rate measures at the seven market are as follows; Biase 0.02(mu)sv/h to 0.09(mu)sv/h, Akamkpa 0.02(mu)sv/h to 0.09(mu)sv/h, Odukpani 0.02(mu)sv/h to 0.09(mu)sv/h marian market 0.06(mu)sv/h to 0.19(mu)sv/h, Calabar South, 0.05(mu)sv/h to 0.30(mu)sv/h, Akpabuyo 0.02(mu)sv/h to 0.19(mu)sv/h, Bakassi 0.02(mu)sv/h to 0.16(mu)sv/h. The mean value for dose is mean 0.047 (pm) 0.018 for Biase, 0.043 (pm) 0.018 for Akamkpa, 0.043 (pm) 0.017 for Odukpani, 0.110 (pm) 0.036 for Marian, 0.106 (pm) 0.059 sv/h for Calabar South, 0.104 (pm) 0.056 sv/h for Akpabuyo and 0.053 (pm) 0.031 sv/h for Bakassi. Mean values of 0.073 (pm) 0.026msvy-1, 0.067 (pm) 0.029msv/y, 0.095 (pm) 0.08msv/y, 0.158 (pm) 0.072msv/y, 0.134 (pm) 0.114msv/y, 0.159 (pm) 0.084msv/y and 0.223 (pm) 0.654 for AEDE were observed respectively for within the markets. Similarly, 0.259 (pm) 0.092 x 10-3, 0.235 (pm) 0.095 x 10-3, 0.338 (pm) 0.265 x 10-3, 0.552 0.252 x 10-3, 0.470 (pm) 0.397 x 10-3, 0.558 0.29 x 10-3, and 0.265 (pm) 0.097 x 10-3 were recorded for ELCR, with the marketer the AEDE values are with the permissible limit as recommended by the international bodies, the ELCR values are also within permissible limit. The implication of the AEDE & ELCR values is that the markets sides is radiation safe for any radiological health burdens that might arise due to absorb dose from BIR, but the probability of are developing cancer over a life time exposure in market places is high. It’s recommended that periodic BIR monitory and evaluation and radioactive concentration of nuclides in soil and rocks of the area be carried out by local authority.
人类暴露于自然和人工来源的电离辐射是地球上无法避免的现象。使用451p离子室测量仪确定了尼日利亚克罗斯河州一些市场的辐射概况和剂量，并计算了以下辐射吸收剂量指数、年有效剂量当量和超寿命癌症风险。02（mu）sv/h到0.09（mu）sv/h, Akamkpa 0.02（mu）sv/h到0.09（mu）sv/h, Odukpani 0.02（mu）sv/h到0.09（mu）sv/h marian市场 0.06（mu）sv/h到0.19 (mu)sv/h, Calabar South, 0.05 (mu)sv/h to 0.30 (mu)sv/h, Akpabuyo 0.02 (mu)sv/h to 0.19 (mu)sv/h, Bakassi 0.02 (mu)sv/h to 0.16 (mu)sv/h.剂量的平均值为：比亚斯 0.047 （/pm） 0.018；阿坎帕 0.043 （/pm） 0.018；奥杜卡帕尼 0.043 （/pm） 0.017；马里安 0.110 （/pm） 0.036；奥杜卡帕尼 0.110 （/pm） 0.017；马里安 0.110 （/pm） 0.018；奥杜卡帕尼 0.043 （/pm） 0.017；奥杜卡帕尼 0.110 （/pm） 0.018。Marian 为 0.036，Calabar South 为 0.106 （/pm） 0.059 sv/h，Akpabuyo 为 0.104 （/pm） 0.056 sv/h，Bakassi 为 0.053 （/pm） 0.031 sv/h。平均值分别为 0.073 （0.026msvy-1）、0.067 （0.029msv/y）、0.095 （0.08msv/y）、0.158 （0.072msv/y）、0.053 （0.056msv/h）和 0.053 （0.031msv/h）。在市场内部，分别观察到AEDE的0.134（0.114msv/y）、0.159（0.084msv/y）和0.223（0.654）。同样，0.259 （0.092 x 10-3）、0.235 （0.095 x 10-3）、0.338 （0.265 x 10-3）、0.552 （0.252 x 10-3）、0.470 （0.397 x 10-3）、0.558 （0.29 x 10-3）和 0.265 （0.销售商的 AEDE 值符合国际机构建议的允许限值，ELCR 值也在允许限值之内。AEDE 值和 ELCR 值的含义是，对于因吸收 BIR 辐射剂量而可能产生的任何辐射健康负担而言，市场边的辐射是安全的，但在市场内终生暴露于辐射的人患癌症的概率很高。建议地方当局定期进行 BIR 监测和评估，以及该地区土壤和岩石中核素的放射性浓度。
{"title":"Assessment of Background Gamma Radiation Levels Across Major Markets in Southern Senatoria District of Cross River State, Nigeria","authors":"Igomah, G.O, Osahon, O, Eze, B.E, Ekong, I. B, Azogor, W.E","doi":"10.9734/ajopacs/2024/v12i1219","DOIUrl":"https://doi.org/10.9734/ajopacs/2024/v12i1219","url":null,"abstract":"Human exposure to ionizing radiation from natural and artificial sources is unpreventable phenomenon on earth. Radiation profile and dose at for some markets in Cross River State, Nigeria have been ascertained using 451p ion chamber survey meter and the following indices of radiation absorb dose, annual effective dose equivalent, and excess life cancer risk, were calculated. the dose rate measures at the seven market are as follows; Biase 0.02(mu)sv/h to 0.09(mu)sv/h, Akamkpa 0.02(mu)sv/h to 0.09(mu)sv/h, Odukpani 0.02(mu)sv/h to 0.09(mu)sv/h marian market 0.06(mu)sv/h to 0.19(mu)sv/h, Calabar South, 0.05(mu)sv/h to 0.30(mu)sv/h, Akpabuyo 0.02(mu)sv/h to 0.19(mu)sv/h, Bakassi 0.02(mu)sv/h to 0.16(mu)sv/h. The mean value for dose is mean 0.047 (pm) 0.018 for Biase, 0.043 (pm) 0.018 for Akamkpa, 0.043 (pm) 0.017 for Odukpani, 0.110 (pm) 0.036 for Marian, 0.106 (pm) 0.059 sv/h for Calabar South, 0.104 (pm) 0.056 sv/h for Akpabuyo and 0.053 (pm) 0.031 sv/h for Bakassi. Mean values of 0.073 (pm) 0.026msvy-1, 0.067 (pm) 0.029msv/y, 0.095 (pm) 0.08msv/y, 0.158 (pm) 0.072msv/y, 0.134 (pm) 0.114msv/y, 0.159 (pm) 0.084msv/y and 0.223 (pm) 0.654 for AEDE were observed respectively for within the markets. Similarly, 0.259 (pm) 0.092 x 10-3, 0.235 (pm) 0.095 x 10-3, 0.338 (pm) 0.265 x 10-3, 0.552 0.252 x 10-3, 0.470 (pm) 0.397 x 10-3, 0.558 0.29 x 10-3, and 0.265 (pm) 0.097 x 10-3 were recorded for ELCR, with the marketer the AEDE values are with the permissible limit as recommended by the international bodies, the ELCR values are also within permissible limit. The implication of the AEDE & ELCR values is that the markets sides is radiation safe for any radiological health burdens that might arise due to absorb dose from BIR, but the probability of are developing cancer over a life time exposure in market places is high. It’s recommended that periodic BIR monitory and evaluation and radioactive concentration of nuclides in soil and rocks of the area be carried out by local authority.","PeriodicalId":8541,"journal":{"name":"Asian Journal of Physical and Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140707433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-13DOI: 10.9734/ajopacs/2024/v12i2220
Raymond Kaboré, Yacouba Sanou, Adama Konaté, S. Paré
In Burkina Faso, water resources in mining area are sometime polluted by cyanide. To mitigate this pollution, clays have been collected in Kaya and Koro and used as adsorbents to remove cyanide in waters. Experiments have been carried out using batch adsorption with synthetic cyanide solutions. The influence of operating conditions has been evaluated on adsorption capacity. From experimental results, the particle size did not have a great impact on the cyanide removal rate up to 150 µm in diameter. The increase of initial pH from 6.5 to 11 led to a decrease in the cyanide removal capacity adsorption from 9.5 to 7.6 and the volatility rate of cyanide from 6 to 2%. When the initial concentration was increased between 5.5 and 224 mg/L, this resulted an increase in adsorption capacity from 0.8 to 23.5 mg/g and a decrease in the removal rate from 95 to 47%. The contact time increased with the temperature, it was respectively 3; 4 and 8 H for Koro and 4; 6 and 12 H for Kaya respectively at 20; 30 and 40°C. The adsorption of cyanide was described by an exothermic and spontaneous process occurred on monolayer through a chemisorption following a pseudo-second order kinetic.
{"title":"Study of the Efficiency of Two Clays Soils for Cyanide Removal in Water: Kinetic and Equilibrium Modelling","authors":"Raymond Kaboré, Yacouba Sanou, Adama Konaté, S. Paré","doi":"10.9734/ajopacs/2024/v12i2220","DOIUrl":"https://doi.org/10.9734/ajopacs/2024/v12i2220","url":null,"abstract":"In Burkina Faso, water resources in mining area are sometime polluted by cyanide. To mitigate this pollution, clays have been collected in Kaya and Koro and used as adsorbents to remove cyanide in waters. Experiments have been carried out using batch adsorption with synthetic cyanide solutions. The influence of operating conditions has been evaluated on adsorption capacity. From experimental results, the particle size did not have a great impact on the cyanide removal rate up to 150 µm in diameter. The increase of initial pH from 6.5 to 11 led to a decrease in the cyanide removal capacity adsorption from 9.5 to 7.6 and the volatility rate of cyanide from 6 to 2%. When the initial concentration was increased between 5.5 and 224 mg/L, this resulted an increase in adsorption capacity from 0.8 to 23.5 mg/g and a decrease in the removal rate from 95 to 47%. The contact time increased with the temperature, it was respectively 3; 4 and 8 H for Koro and 4; 6 and 12 H for Kaya respectively at 20; 30 and 40°C. The adsorption of cyanide was described by an exothermic and spontaneous process occurred on monolayer through a chemisorption following a pseudo-second order kinetic.","PeriodicalId":8541,"journal":{"name":"Asian Journal of Physical and Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140707630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-12DOI: 10.9734/ajopacs/2024/v12i1218
A. Kouyaté, M’Bouillé Cissé, Koffi Jean-Paul Bohoussou, Kanvaly Bamba, M. A. Tigori, P. Niamien, Albert Trokourey, B. Dongui, B. Dibi
In the present work, glasses with molar composition 20.15[(2.038+x)SiO2-(1.457-x)Na2O]-2.6P2O5-26.905CaO-0.045ZnO were studied in order to contribute to the application of thermal analysis methods to the characterization of zinc-doped bioactive glasses. The aim is to provide answers to the expectations of practitioners before in vitro or in vivo tests on the physicochemical properties of these zinc doped bioactive glasses. Samples were produced by high temperature melting followed by quenching. The samples were characterized by X-Ray Diffraction (XRD), Differential Scanning Calorimetry (DSC) and pycnometry. The results show that the samples are amorphous, and the values for vitreous transition temperature and density are of the same order of magnitude as those for the system without addition of ZnO. Consequently, it appears that the addition of 0.045 % mol of ZnO to the base glass does not significantly alter the physicochemical and structural properties of the glass.
{"title":"Tg, Density and X-ray Diffraction of Zinc-doped Bioactive Glasses with Molar Formulation: 20.15[(2.038+x)SiO2-(1.457-x)Na2O]-2.6P2O5-26.905CaO-0.045ZnO System","authors":"A. Kouyaté, M’Bouillé Cissé, Koffi Jean-Paul Bohoussou, Kanvaly Bamba, M. A. Tigori, P. Niamien, Albert Trokourey, B. Dongui, B. Dibi","doi":"10.9734/ajopacs/2024/v12i1218","DOIUrl":"https://doi.org/10.9734/ajopacs/2024/v12i1218","url":null,"abstract":"In the present work, glasses with molar composition 20.15[(2.038+x)SiO2-(1.457-x)Na2O]-2.6P2O5-26.905CaO-0.045ZnO were studied in order to contribute to the application of thermal analysis methods to the characterization of zinc-doped bioactive glasses. The aim is to provide answers to the expectations of practitioners before in vitro or in vivo tests on the physicochemical properties of these zinc doped bioactive glasses. Samples were produced by high temperature melting followed by quenching. The samples were characterized by X-Ray Diffraction (XRD), Differential Scanning Calorimetry (DSC) and pycnometry. The results show that the samples are amorphous, and the values for vitreous transition temperature and density are of the same order of magnitude as those for the system without addition of ZnO. Consequently, it appears that the addition of 0.045 % mol of ZnO to the base glass does not significantly alter the physicochemical and structural properties of the glass.","PeriodicalId":8541,"journal":{"name":"Asian Journal of Physical and Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140711530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-29DOI: 10.9734/ajopacs/2024/v12i1217
D. R. Nathaniels, G. C. Sèmassou, R. Ahouansou
The current construction of residential buildings in Benin neglects the importance of thermal insulation of their envelopes. Instead, it relies on active systems as a solution to mitigate over-consumption of electrical energy and guarantee a certain level of thermal comfort inside these buildings. It should be noted that Beninese architects are generally unfamiliar with these thermal aspects. The main aim of this study is to assess the effects of thermal insulation on walls and roof, determine the optimum thickness of insulating materials, and integrate a controlled mechanical ventilation system to improve thermal comfort in a humid tropical climate. The investigations were carried out on an example of a typical residential building located in Cotonou, Benin, with precise geographical coordinates (latitude 6°38' North, longitude 2°34' East). To analyze the thermal behavior of this building, a series of dynamic thermal simulations were carried out using TRNSYS software, which was used both to model the building structure and to run the various simulations. The results of this study revealed that thermal insulation of the walls and roof, using polystyrene, significantly reduced the need for air conditioning. What's more, the integration of a controlled mechanical ventilation system not only ensured indoor air quality, but also helped regulate indoor humidity, reducing it from 67% to 76%.
{"title":"Analysis of the Influence of Envelope Heat Gain on Hygrothermal Comfort in Tropical Housing: The Case of Benin","authors":"D. R. Nathaniels, G. C. Sèmassou, R. Ahouansou","doi":"10.9734/ajopacs/2024/v12i1217","DOIUrl":"https://doi.org/10.9734/ajopacs/2024/v12i1217","url":null,"abstract":"The current construction of residential buildings in Benin neglects the importance of thermal insulation of their envelopes. Instead, it relies on active systems as a solution to mitigate over-consumption of electrical energy and guarantee a certain level of thermal comfort inside these buildings. It should be noted that Beninese architects are generally unfamiliar with these thermal aspects. \u0000The main aim of this study is to assess the effects of thermal insulation on walls and roof, determine the optimum thickness of insulating materials, and integrate a controlled mechanical ventilation system to improve thermal comfort in a humid tropical climate. The investigations were carried out on an example of a typical residential building located in Cotonou, Benin, with precise geographical coordinates (latitude 6°38' North, longitude 2°34' East). To analyze the thermal behavior of this building, a series of dynamic thermal simulations were carried out using TRNSYS software, which was used both to model the building structure and to run the various simulations. \u0000The results of this study revealed that thermal insulation of the walls and roof, using polystyrene, significantly reduced the need for air conditioning. What's more, the integration of a controlled mechanical ventilation system not only ensured indoor air quality, but also helped regulate indoor humidity, reducing it from 67% to 76%.","PeriodicalId":8541,"journal":{"name":"Asian Journal of Physical and Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140413795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：