161 research outputs found
The Effect of Jordanian Herbs on Gut Microflora, and Immunity of Broiler Chickens
The study aimed to examine and compare the influence of adding synthetic antioxidant butylated hydroxyanisole (BHA), with two herbal medical plants (Oregano germander) on broiler gut microflora, and its immunity. One hundred and forty broilers were raised for three weeks and were distributed into five treatment groups. The prepared dietary treatments were included (w/w):1). Control (without supplement) 2). Germander (GER; inclusion level 1.5 %) 3). Oregano (ORE; inclusion level 2.5 %) 4). Combination of GER and ORE (CM; inclusion levels 1.5 and 2.5 %, respectively)5). BHA (0.02 %). The highest total number of ileal lactobacilli counts was found in broilers fed CM dietary treatment. On the other hand, their disgust samples (i.e. in CM) showed the lowest total count of Escherichia coli compared to other treatments. Among different dietary treatments, CM treatment showed the best positive effect on broiler immune system response, where it showed the highest Bursa Fabricius relative weight, and IgG values. Overall, the results showed that such dietary treatment (i.e. Combination of GER and ORE)positively enhanced gut microflora, and bird's immunity response
Kinetics of Tannin Reduction in Soaked and Unsoaked Velvet Beans Treated by Microwave Treatment
The effect of microwave treatment on the kinetics of tannin reduction in black and white colored velvet bean (soaked and unsoaked) was evaluated. The objective of this study was to determine the association level and the kinetics of tannin reduction in velvet beans after being treated with microwave treatment in order to find the appropriate time treatment useful for poultry health. Tannin content reduction rate was nicely fitted by linear regression analysis with association value (r) ranging from 0.96-0.98. Linear regression analysis suggests a zero-ordered kinetics which means that the decline rate of tannins after exposure to microwave treatment is independent of the initial tannin concentration. In both colored velvet bean (black and white), the tannin reduction rate of unsoaked seeds was lower than that of soaked seeds. According to literature findings regarding the positive role of tannins level in poultry, it can be concluded from this study that the exposure of velvet bean to microwave treatment for more than 12 minutes may eliminate the positive effect of tannin on poultry
Evaluating Carbon Footprint in the Life Cycle Design of Residential Concrete Structures in Jordan
The construction industry is a significant source of greenhouse gas emissions, and there is a growing global interest in reducing the environmental impact of carbon dioxide emissions associated with building construction and operation. Concrete, the most commonly used material in construction, is known to release a substantial amount of environmentally harmful waste throughout its life cycle, including production, construction, operation, and demolition. The worldwide production and consumption of concrete contribute to approximately 5% of all human-related CO2 emissions each year. To assess the carbon footprint of concrete manufacturing and its application in construction projects, a comprehensive approach called life cycle assessment (LCA) is necessary. This paper presents a new process-based LCA approach to analyze carbon emissions and evaluate the carbon footprint of concrete from raw material extraction to the end-of-life stage. To address carbon emissions throughout the life cycle of concrete structures in the Middle East, the study adopts a case study approach, focusing on selected concrete structures in Jordan. The findings from these case studies highlight that the operational phase of concrete structures is the primary contributor to carbon emissions. By thoroughly examining the carbon cycle within structures and their interactions with the surrounding ecosystem, significant reductions in CO2 emissions, environmental deterioration, and its consequences can be achieved. Doi: 10.28991/CEJ-2023-09-07-07 Full Text: PD
Referral Physicians’ Knowledge of Radiation Dose: A Cross-sectional Study
AIM: The purpose of the study was to evaluate the knowledge of referring physicians of general practitioners, residents, and medical specialists in Jordan and the Middle East on radiation dose and its impact on vulnerable patients.
MATERIALS AND METHODS: The Institutional Review Board approved this study before data collection. A cross-sectional study employed questionnaire that was distributed to respondents (n = 293) of general practitioners, residents, specialists, and therapists. The questionnaire consisted of 29 questions. Nine questions concerned with demographics and the remaining 20 questions were divided into five sections: Radiation dose, ionizing radiation, pediatric radiation, pregnant women radiation, and radiation risks. The mean score was computed out of 20. Chi-squared test of independence was utilized to analyze each question. To compare the responses between the demographic variables groups, Kruskal–Wallis and Mann–Whitney tests were used.
RESULTS: Out of the 293 respondents, 128 (43.7%) were aware of radiation. The average score of the questionnaire was 9.5 out of 20 (47.5%). Within each section, the level of knowledge varied. Physicians had the highest level of knowledge in radiation risk (85.7%) followed by ionizing radiation (62.1%). The questionnaire revealed lower levels of knowledge in the areas of pediatric radiation, pregnant women radiation, and radiation dose. The percentages of respondents, (with fair to good level of knowledge), were 47.1%, 34.5%, and 24.6%, respectively.
CONCLUSION: The results of this study were consistent with previous studies that demonstrated a poor level of general knowledge in referring physicians regarding radiation dose, ionizing radiation, pediatric radiation, pregnant women radiation, and radiation risks
The Effect of COVID-19 on Family Support for Home-Schooling in Urban Areas
The objective of the study is to clarify that the family participated in COVID-19 as a home-schooling family. The sample was selected according to the geographical distribution of schools in the eastern region of Khartoum. Data was collected through a questionnaire and interviews. The most important result is that there is an increasing interest from parents to support home-schooling despite the challenges of continuing learning, such as the widening digital divide in technology, previous experience, and poor network connectivity. This research paper focused on the point of view of parents in the city of Khartoum on supporting home-schooling according to social variables related to both mother and father, and the paper concluded that parents of students in private schools are more supportive of home education. Also, most of the parents of students who support home-schooling have reached their university level of education and post-university and belong to the youth age group. Although parents emphasize the importance of home-schooling during the COVID-19 infection, there are challenges associated with providing home-schooling for their children. Doi: 10.28991/ESJ-2023-07-05-021 Full Text: PD
Boundary value problems for nonlinear fractional integro-differential equations: theoretical and numerical results
SARS-CoV-2 infection in acute pancreatitis increases disease severity and 30-day mortality: COVID PAN collaborative study
Objective: There is emerging evidence that the pancreas may be a target organ of SARS-CoV-2 infection. This aim of this study was to investigate the outcome of patients with acute pancreatitis (AP) and coexistent SARS-CoV-2 infection. Design: A prospective international multicentre cohort study including consecutive patients admitted with AP during the current pandemic was undertaken. Primary outcome measure was severity of AP. Secondary outcome measures were aetiology of AP, intensive care unit (ICU) admission, length of hospital stay, local complications, acute respiratory distress syndrome (ARDS), persistent organ failure and 30-day mortality. Multilevel logistic regression was used to compare the two groups. Results: 1777 patients with AP were included during the study period from 1 March to 23 July 2020. 149 patients (8.3%) had concomitant SARS-CoV-2 infection. Overall, SARS-CoV-2-positive patients were older male patients and more likely to develop severe AP and ARDS (p<0.001). Unadjusted analysis showed that SARS-CoV-2-positive patients with AP were more likely to require ICU admission (OR 5.21, p<0.001), local complications (OR 2.91, p<0.001), persistent organ failure (OR 7.32, p<0.001), prolonged hospital stay (OR 1.89, p<0.001) and a higher 30-day mortality (OR 6.56, p<0.001). Adjusted analysis showed length of stay (OR 1.32, p<0.001), persistent organ failure (OR 2.77, p<0.003) and 30-day mortality (OR 2.41, p<0.04) were significantly higher in SARS-CoV-2 co-infection. Conclusion: Patients with AP and coexistent SARS-CoV-2 infection are at increased risk of severe AP, worse clinical outcomes, prolonged length of hospital stay and high 30-day mortality
MICA/B expression is inhibited by unfolded protein response and associated with poor prognosis in human hepatocellular carcinoma
Activation and clinical significance of the unfolded protein response in breast cancer
introduction: The tumour microenvironment is hypoglycaemic, hypoxic and acidotic. This activates a stress signalling pathway: the unfolded protein response (UPR). The UPR is cytoprotective if the stressor is mild, but may initiate apoptosis if severe.Activation of the UPR in breast carcinoma is induced by microenvironmental stress such as glucose and oxygen deprivation, but may also be linked to oestrogen stimulation. It may be clinically significant as it may alter chemosensitivity to doxorubicin.
methods: 395 human breast adenocarcinomas were immunohistochemically stained for UPR activation markers (glucose-regulated protein (GRP-78 and XBP-1). A model of UPR activation in vitro by glucose deprivation of T47D breast cancer cells was developed to determine how the UPR affects cellular sensitivity to doxorubicin and 5-fluorouracil. Cytotoxicity was assessed using a colorimetric cytotoxicity assay (MTT). The effect of oestrogen stimulation and tamoxifen exposure on UPR activation by T47D cells was determined by western blotting measurement of the key UPR protein, GRP-78.
results: Expression of GRP78 and XBP-1 was demonstrated in 76% and 90% of the breast cancers, respectively, and correlated with oestrogen receptor positivity (P=0.045 and 0.017, respectively). In vitro UPR activation induced resistance to both doxorubicin and 5-flurouracil, (P<0.05). Oestrogen stimulation induced GRP78 and XBP1 over-expression on western blotting. Tamoxifen did not block this response and may induce UPR activation in its own right.
conclusions: The UPR is activated in the majority of breast cancers and confers resistance to chemotherapy. In vitro oestrogen stimulates UPR induction. UPR activation may contribute to breast cancer chemoresistance and interact with oestrogen response elements
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