Science Archives最新文献

{"title":"Assessment of the annual dose of the occupational workers involved in dry decontamination of NORM contaminated equipment in Egyptian oil and gas industry","authors":"W. A. Khalil, N. Helal, Mahrous Elsayed","doi":"10.47587/sa.2021.2308","DOIUrl":"https://doi.org/10.47587/sa.2021.2308","url":null,"abstract":"Processing activities for oil and gas production have been known to produce a large amounts NORMs (Naturally Occurring Radioactive Materials) at elevated concentrations as by-product waste streams. This means that TE-NORM (technologically enhanced naturally occurring radioactive materials) can pose Radiation exposure levels that are generated by waste from the oil & gas industry. which necessitate constant monitoring and attention during NORM decontamination of oil and gas equipment. The most common source of exposure is external and internal radiation coming from the Ra & Ra (U-238 and Th-232 series) radionuclides and their progenies. In this study, we focus on the yearly dose of workers who are working in recently established dry decontamination facility as a dedicated tool for NORM contaminated tubing and other small installation’s decontamination using abrasive blasting machines instead of High-Pressure Jetting Water facilities, in purpose to minimize the waste volume produced as well as reduce the exposure time of workers involved in the decontamination process. Workers were monitored for one year on three months’ basis using the TLD badges. Two groups of workers were formed of 5 persons for each group, working back-to-back 15 days on 15 days off in field basis, for around 10 working hours/day. All recorded personal doses were within the occupationally acceptable dose limits (20mSv/Year). Most of the workers were exposed to doses range of 700 1000 μSv/ 3 months, two readings were away of this range, but even though still within the occupationally acceptable dose limits. It was found that used protective measures against external and internal contamination help enhancement of workers’ protection against NORM hazards as well as minimizing the NORM contaminated wastes using the dry decontamination technique to a very far extent in comparison to high pressure jetting water technique which had positive impact on the environment in terms of the radioactive decontamination in oil and gas working environment.","PeriodicalId":273863,"journal":{"name":"Science Archives","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126341919","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}

{"title":"Trichomonas vaginals: a review on pathogenicity, diagnosis and treatment","authors":"Luma Foad Manher AL-ETHAFA","doi":"10.47587/sa.2021.2202","DOIUrl":"https://doi.org/10.47587/sa.2021.2202","url":null,"abstract":"The parasite Trichomonas vaginalis is one of the primary parasites that cause vaginitis and causes Trichomoniasis and is considered a sexually transmitted disease, and it is widespread all over the world. This parasite is an anaerobic flagellar parasite that affects the urinary genital tract in humans and the symptoms associated with it vary between the sexes, and severe infection may cause infertility or delayed childbearing for both sexes. According to WHO reports, there are about 170 million annual cases of this parasite around the world. Due to the risks posed by venereal diseases to society and the lack of studies on such. Diseases This study was conducted to increase knowledge and methods of prevention and treatment of this parasite.","PeriodicalId":273863,"journal":{"name":"Science Archives","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125472043","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}

{"title":"Impairment of uterine wall structure by Chocolate Brown HT in rats","authors":"A. Khatun, Mukti Mondal, Sanghamitra Pal, S. Parvin, G. Paul","doi":"10.47587/sa.2021.2206","DOIUrl":"https://doi.org/10.47587/sa.2021.2206","url":null,"abstract":"Chocolate Brown HT, the bis-azo dye which is extensively used to color different types of foods. We aimed to evaluate the role of Chocolate Brown HT on the functions of the uterus. Studies were carried out on adult female albino rats of the Charles Foster strain. For this study rats were randomly separated into four groups: one was the control group, and the other three groups were exposed to three different effective dosages (100mg/kg body weight/day, 200mg/kg body weight /day, and 400mg/kg body weight /day) of Chocolate Brown HT for 30 days. After the termination of this period, alterations to body weight, the weight of uterus, activities of different antioxidant enzymes, and histomorphology of uterine wall structure were measured. We have observed a significant decrease in mean body weight and weight of uterus in exposed rats. The activities of different antioxidant enzymes such as superoxide dismutase (SOD), catalase (CAT), glutathione reductase (GR), glutathione-s-transferase (GST), and glutathione peroxidase (GPx) were decreased and the level of malondialdehyde (MDA), a biomarker of lipid peroxidation was increased significantly in Chocolate Brown HT exposed rats compared to control group of rats in a dose-dependent manner. From the histomorphological study, significant degeneration and lesions in the wall structure of the uterus have also been detected in Chocolate Brown HT exposed rats. From our study, it may be concluded that Chocolate Brown HT impairs the function of the uterus probably by producing oxidative stress-induced damages of uterine tissues.","PeriodicalId":273863,"journal":{"name":"Science Archives","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125734162","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}

{"title":"Gold nanoparticles that are protective for complexes of fenugreek and clove extract and assess their impact on isolated bacteria from diabetic foot","authors":"Rasha Khazal Al-Lateef, R. Hassan","doi":"10.47587/sa.2021.2411","DOIUrl":"https://doi.org/10.47587/sa.2021.2411","url":null,"abstract":"Diabetes is a very common disease that led researchers to pay attention to diabetes as it accompanies the events of many secondary diseases associated with diabetes such as cardiovascular diseases, visual diseases, general weakness, and health problems. The current study was completed in Samarra, Salah al-Din province, from 15 October 2020 to 2021/7/15. The incidence of diabetes in males was 62.5%, 37.5%, respectively, while for the age groups where the highest incidence was in the 51-60 age group. It gave 28 bacterial growth samples and 70% while 12 samples did not give bacterial growth and by 30%. The inhibition effect of two types of hot and cold aquatic plant extracts for cloves and the fenugreek was studied on isolated bacteria at 200, 100, 50, 25, 12.5, 6.25 mg/ml Inhibition rates for extracts with inhibition diameters of gold nanoparticles were based on the same bacterial species at 200, 100, 50, 25, 12.5, 6.25 mg/ml, It is also compared with a combination of gold nanoparticles and extracted at 6.25mg/ml clove with + 1mm nanoparticles and mg/ml 0 20 circuit With +1 mM nanoparticles). The results of the current study also showed that hot and cold clove water extracts outperformed hot and cold-water ring extracts in inhibiting the growth of bacterial insulation causing diabetic foot injury ulcers, and clove extracts outperformed gold nanoparticles, which did not give any inhibition effectiveness. in inhibiting bacterial growth compared to ring plant and gold nanoparticles.","PeriodicalId":273863,"journal":{"name":"Science Archives","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134209809","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}

{"title":"In vitro antibacterial characterization of Streptosporangium sp. (AI-21) a new soil isolate against food borne bacteria","authors":"A. Dimri, A. Chauhan, M. Aggarwal","doi":"10.47587/sa.2020.1103","DOIUrl":"https://doi.org/10.47587/sa.2020.1103","url":null,"abstract":"In the present investigation, Streptosporangium sp. (AI-21) a new soil borne isolate was characterized against food borne bacteria isolated from thirty-five food samples. Based on the morphological and biochemical characteristics, it was found that all food borne bacteria belong to Escherichia, Pseudomonas, Salmonella, Staphylococcus and Bacillus group of microorganisms. Colony morphology and biochemical characterization was the base of identification of actinomycete species. The actinomycete isolate was grown at a mass level by inoculum build up in mother flasks. Extraction of antibacterial substance from isolated actinomycetes was done by solventextraction method. Ethyl acetate extract exhibited activity against Staphylococcus sp. and Escherichia sp. The MICs of this extract was recorded in the range of 512 μg/ml to 2048 μg/mL. A maximum zone of 23.15mm was observed against Staphylococcus sp. The study not only targeted food borne isolates but also suggested how soil could be explored for the extraction of bioactive molecules by actinomycetes. This study could be a platform for new drug discovery.","PeriodicalId":273863,"journal":{"name":"Science Archives","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128934482","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}

{"title":"Prevalence of human immunodeficiency virus among women assessing ante-natal care at a tertiary health facility in Enugu State, Nigeria","authors":"Hope O. Nwoga, M. Ajuba, C. Igweagu","doi":"10.47587/sa.2021.2312","DOIUrl":"https://doi.org/10.47587/sa.2021.2312","url":null,"abstract":"Human Immunodeficiency Virus (HIV) is a pandemic with high prevalence rates worldwide with Sub-Saharan Africa's worst hit. This study aimed to determine the prevalence of HIV among pregnant women attending Ante-Natal Clinic (ANC) at a tertiary health facility in Enugu State Nigeria. This was a prospective hospital-based study that involved all the women that attended ANC of a tertiary health facility in Nigeria. All the data were retrieved from the patient’s ante-natal cards and entered into a pro forma. Data were analyzed using SPSS version 25 and variables were presented as frequencies, percentages, means, and standard deviation. Chi-square test was used to determine factors that affected the prevalence of HIV, and this was performed with the level of significance set at p ≤ 0.05. All the women that attended ANC in the hospital were tested for HIV and the prevalence was 1.8%. Women between ages 21 – 30 years, married, had secondary education and with 3-4 children had the highest prevalence of HIV. The occupation was the only factor that significantly affected the prevalence of HIV with unskilled workers having the highest prevalence of 12.5%. HIV prevalence among pregnant women was relatively low.","PeriodicalId":273863,"journal":{"name":"Science Archives","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130981066","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}

{"title":"Antagonist effect of Lactococcus on Pseudomonas aeruginosa isolated from milk and curd","authors":"Eswari Beeram, C. Silpa","doi":"10.47587/sa.2021.2208","DOIUrl":"https://doi.org/10.47587/sa.2021.2208","url":null,"abstract":"","PeriodicalId":273863,"journal":{"name":"Science Archives","volume":"150 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134503360","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}

{"title":"A systematic review of tapeworms (Plathelminthes, Cestoda) of Columba livia","authors":"Nuha Jabbar Alrikaby, Hasan Azaati Ibadi Abul-Doanej","doi":"10.47587/sa.2023.4206","DOIUrl":"https://doi.org/10.47587/sa.2023.4206","url":null,"abstract":"After conducting research and analyzing literature data, it was discovered that Iraq is home to tapeworms belonging to four distinct families, namely Davaineidae, Hymenolepididae, Dilepididae, and Anoplocephalidae. Within these families, several species of tapeworm have been identified in Iraq, including Cotugnia intermedia, Raillietina tetragona, Raillietina cesticillus, Raillietina echinobothrida, Aporina delafondi, and Davainea proglottina. Cotugnia intermedia is a tapeworm commonly found in the intestines of small rodents and is transmitted to cats and dogs through the ingestion of infected rodents. Raillietina tetragona and Raillietina cesticillus are two species of tapeworm that commonly infect chickens, while Raillietina echinobothrida is found in pigeons and doves. Aporina delafondi is a tapeworm that has been found in the intestines of cattle, sheep, and goats in Iraq. The adult worms attach to the host’s intestinal wall and can cause intestinal inflammation and blockages. Finally, Davainea proglottina is a tapeworm that infects the intestines of domestic and wild carnivores, including dogs, cats, and foxes. Infection occurs through ingestion of infected intermediate hosts such as rodents, birds, and reptiles. Identifying these tapeworm species in Iraq is important for developing effective control and prevention strategies, as many of these parasites can cause significant health problems in animals and humans. Proper sanitation and hygiene practices, as well as deworming programs for domestic animals, are important measures that can help to reduce the spread of these tapeworms and their associated diseases.","PeriodicalId":273863,"journal":{"name":"Science Archives","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115615650","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}

{"title":"Modeling the effect of crude oil production and other factors on Nigeria’s economy: an autoregressive distributed lag approach","authors":"Samuel Olorunfemi Adams, Jumoke Olamide Bello","doi":"10.47587/sa.2022.3109","DOIUrl":"https://doi.org/10.47587/sa.2022.3109","url":null,"abstract":"The overdependence on crude oil has produced susceptivity to every part of the Nigerian Gross Domestic Growth (GDP) and there was the need to examine the effect of crude oil on the economy of Nigeria. This study, therefore, investigates the long-run effect between oil revenue, oil price volatility, and economic growth in Nigeria. The data on oil revenue, non-oil revenue, oil price volatility, and per-capita income from the year 2006 – to 2020 extracted from the Central Bank of Nigeria (CBN) Statistical Bulletin was applied in this research work. The research applied Descriptive Statistics, Augmented Dickey-Fuller Unit Root test, Johansen cointegration, and Autoregressive Distributed Lag (ARDL) co-integration statistical method to examine the long-run effects of crude oil production on Nigeria’s economy. It was discovered from our result that; oil revenue plays a remarkable role in Nigeria‘s economy by its advancement of the country’s GDP. Furthermore, Nigeria has regulated oil revenue to accomplish economic growth in numerous ways. The study recommended that the Nigerian Government should diversify its export supply through downstream production and encouragement of more private sector participation.","PeriodicalId":273863,"journal":{"name":"Science Archives","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124637292","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}

{"title":"Potentiation of the contraction of duodenal visceral smooth muscle in rat through oxidative stress induced inhibition of AChE activity by Methylparaben","authors":"Raina Ghosh, Sourapriya Mukherjee, K. Sarkar, G. Paul","doi":"10.47587/sa.2021.2307","DOIUrl":"https://doi.org/10.47587/sa.2021.2307","url":null,"abstract":"Methylparaben, a synthetic chemical, is used as preservative to enhance the lifespan of different food items to be stored. So, humans are often exposed to methylparaben through foods preserved with methylparaben. The aim of the study was to examine the effect of methylparaben on contractile function of duodenum, the initial part of small intestine, which helps in digestion and absorption of ingested food. In our study, we have found significant increase in amplitude and frequency of the contraction of duodenum ex vivo in rats exposed to methylparaben dose dependently for all exposure durations in comparison with contraction of the duodenum of rats exposed to DMSO (vehicle control). Significant inhibition of the enzymatic activity of acetylcholinesterase (AChE) in duodenal smooth muscle of exposed rats has also been observed dose dependently in all exposure durations. These results suggest that methylparaben promotes the contraction of duodenum probably by potentiating the contraction of duodenal visceral smooth muscle (VSM). The methylparaben induced potentiation of duodenal VSM might be due to inhibition of AChE activity. The activities of antioxidant enzymes (GPx and GR) have significantly decreased and LDH activity and malondialdehyde (MDA) level have significantly increased in smooth muscle homogenates of rats exposed to methylparaben in our study. These observations suggest that methylparaben inhibits the AChE activity probably by producing oxidative stress in smooth muscle cells. In conclusion, methylparaben potentiates the contractile function of duodenal VSM probably by promoting oxidative stress induced inhibition of AChE activity at myoneural junctions.","PeriodicalId":273863,"journal":{"name":"Science Archives","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128598835","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}