Search

يتبوّأ العمل التفسيريّ مرتبة شريفة, فقد كثر الكلام في الإعجاز القرآنيّ وكثرت الاتجاهات التفسيريّة التي اهتمت بالوقوف على ما جاء به الله عزّ وجل في كتابه الحكيم, ومن بينها كتاب الكشاف للزمخشري, وقد اهتمّ كثير من العلماء بوضع شروح لكتاب الكشاف, فظهرت العديد من الكتب التي عنيت بتحقيقه, والحواشي الّتي ألفت عليه ومن بينها حاشية الكشاف لعبد الكريم بن عبد الجبار التبريزي, وقد قام البحث بتحقيق على الحاشية بعد أن عرّف بكتاب الكشاف للزمخشري وما جاء فيه.

In our investigation, we subjected eleven reinforced concrete beams to a four-point bending system to explore the impact of varying fibre and ferrocement contents on their structural behaviour. These beams, measuring 1.7 m in length, featured a rectangular cross-section with dimensions of 150 mm by 300 mm. Our study focused on three key variables: steel fibre content (at levels of 0.5%, 1%, and 1.5%), glass fibre content (also at 0.5%, 1%, and 1.5%), and ferrocement content (evaluated with one or two layers of welded or expanded wire mesh). Our findings revealed that incorporating fibres with minimal shear reinforcement significantly enhanced the beams' performance. Specifically: The specimen reinforced with 1.5% steel fibres exhibited the highest ultimate failure load, surpassing the control beam by an impressive 41.87%. The 0.5% glass fibre specimen experienced the least deflection at the ultimate load compared to the control beam. The 1.5% glass fibre specimen demonstrated superior energy absorption compared to the control specimen. Notably, using two layers of welded wire mesh proved most effective in enhancing the ultimate failure load when compared to both the control specimen and other ferrocement-strengthened beams. [ABSTRACT FROM AUTHOR]

Objectives: To determine the predictive value of lactate dehydrogenase (LDH) in diagnosis of septic shock and its association with other prognostic scores in critical pediatric patients. Methods: A cross-sectional study was performed at Children’s Hospital of Cairo University between June 2019 and December 2019. A total of 200 pediatric patients were divided into the septic shock group [100 critically ill patients with septic shock from the pediatric intensive care unit (PICU)] and the control group (100 patients with only sepsis). LDH was determined in the first 24 hours of admission. The sensitivity and specificity of LDH in diagnosis of septic shock were assessed; the levels of related indicators of patients with different etiologies were compared; correlations between LDH, Paediatric Index of Mortality Π, and Pediatric Sequential Organ Failure Assessment (PSOFA) were analyzed. Results: LDH was 512 μL (406.50-663.00) in the septic shock group and was significantly higher than that (190 μL, range 160.00-264.50) in the control group (P

Helicobacter pylori (H. pylori) is the most prevalent etiology of gastritis worldwide. H. pylori management depends mainly on antibiotics, especially the triple therapy formed of clarithromycin, amoxicillin, and proton pump inhibitors. Lately, many antibiotic-resistant strains have emerged, leading to a decrease in the eradication rates of H. pylori. Polaprezinc (PZN), a mucosal protective zinc-L-carnosine complex, may be a non-antibiotic agent to treat H. pylori without the risk of resistance. We performed a systematic review and meta-analysis to evaluate the efficacy and safety of a PZN-based regimen for the eradication of H. pylori. This study used a systematic review and meta-analysis synthesizing randomized controlled trials (RCTs) from WOS, SCOPUS, EMBASE, PubMed, and Google Scholar until 25 July 2022. We used the odds ratio (OR) for dichotomous outcomes presented with the corresponding 95% confidence interval (CI). We registered our protocol in PROSPERO with ID: CRD42022349231. We included 3 trials with a total of 396 participants who were randomized to either PZN plus triple therapy (n = 199) or triple therapy alone (control) (n = 197). Pooled OR found a statistical difference favoring the PZN arm in the intention to treat and per protocol H. pylori eradication rates (OR: 2.01 with 95% CI [1.27, 3.21], p = 0.003) and (OR: 2.65 with 95% CI [1.55, 4.54], p = 0.0004), respectively. We found no statistical difference between the two groups regarding the total adverse events (OR: 1.06 with 95% CI [0.55, 2.06], p = 0.85). PZN, when added to the triple therapy, yielded a better effect concerning the eradication rates of H. pylori with no difference in adverse event rates, and thus can be considered a valuable adjuvant for the management of H. pylori. However, the evidence is still scarce, and larger trials are needed to confirm or refute our findings.

Purpose: To compare the changes in quality of life in edentulous patients with single implants supporting mandibular overdentures with two different attachment types before implant placement and after 6 and 24 months. Materials and Methods: Eighty edentulous patients were recruited, and all patients completed the validated Oral Health Impact Profile (OHIP)-EDENT-19 questionnaire before implant surgery. A single implant was placed in the midline of the edentulous mandibles. All implants were allowed to heal for 3 months. After the healing period, randomization into one of two groups was accomplished using sealed envelopes: group A (ball attachment) and group B (locator attachment). The same questionnaire was completed 6 and 24 months postplacement. Mann-Whitney U test for independent samples was used to compare the two groups, while Freidman test was used for comparison within each group. Two-sided P values less than .05 were considered statistically significant. Results: There was an improvement in all domains of the OHIP-EDENT-19 scores at the 6- and 24-month follow-ups for both groups. The social disability domain showed a statistically significant improvement for group A at 6 and 24 months postplacement (P = .004, .005). Within group A, there was a statistically significant improvement within all seven domains (P = .001); while in group B, four domains (functional limitation, physical pain, psychosocial discomfort, and physical disability) and the total score (P = .001) showed a statistically significant improvement. Conclusion: Both attachments improved the patients' quality of life at 24 months postplacement. The ball attachment demonstrated a significant improvement regarding the social effects of the prostheses. [ABSTRACT FROM AUTHOR]

The aim of this study was to study the effect of destruction treatments of aflatoxins contaminated corn by dual purpose oven (microwave and heating). Aflatoxins B1and G1 destruction on chemical constitutes treatments were as follows: 100:0, 80:20, 60:40, 40:60, 20:80 and 0:100 for 3, 5 and 10 minutes. The percentage of the two aflatoxins destruction and the effect of aflatoxin destruction treatments on chemical properties of corn were calculated. These were included moisture, protein, fat, ash, and carbohydrates %. Data show that treatment of the corn by dual purpose oven resulted in reduction of aflatoxin B1 and G1 by 25.4 – 100 and 32-100 %, respectively. The reduction percent was increased with increasing the percentage of using microwaves energy and exposure period. There was a significant (p

Schistosomiasis is a common parasitic infestation that affects 200 million people worldwide. There are more than 76 endemic countries that suffer from this infestation, leading to 200,000 deaths annually. Intestinal schistosomiasis is known to cause a variety of serious gastrointestinal complications. Thus, it is important to diagnose it early to prevent such complications and relieve symptoms early. A typical infection with intestinal schistosomiasis tends to present with chronic diarrhea, abdominal pain, dysentery, and in severe cases portal hypertension and hepatosplenomegaly. However, in this study the authors report two cases that came with unusual presentations of intestinal schistosomiasis during their outpatient clinic evaluation. Case Presentation: The first patient is a 33-year-old male Yemeni national who was referred for investigation of a pedunculated rectal polyp. The patient was otherwise asymptomatic with no significant medical history. The second patient is a 39-year-old male Saudi national who presented with constipation, abdominal pain, and bloating. The patient was initially diagnosed as a case of irritable bowel syndrome and was managed conservatively for 2 years with no improvement. Conclusion: Histopathological evidence via biopsies revealed intestinal schistosomiasis in both patients. Therefore, in endemic areas it remains important to keep intestinal schistosomiasis in the differentials when dealing with vague intestinal signs and symptoms. It is also important to not rule out schistosomiasis from a negative stool egg screening alone as this tool tends to yield false negative results during acute infections and low-intensity chronic infections.

Pseudomonas aeruginosa is an evolving pathogen which can cause serious infections especially to immunocompromised patients. Its high resistance profile to antibiotics results in difficulty, and sometimes impossibility, in treating afflicted patients. Developing an effective vaccine against P. aeruginosa is an important approach to tackle this problem. A similar problematic situation exists for Acinetobacter baumannii. Several vaccine candidates have been investigated up till now but still there is no approved vaccine in the market. One important antigen of P. aeruginosa is the outer membrane protein F (OprF) which functions as a porin with relevant important roles in virulence. Previous studies focused mainly on the C-terminal peptidoglycan binding domain of OprF as a vaccine candidate. In the current study, we have investigated the N-terminal porin domain of OprF as a potential vaccine candidate against P. aeruginosa. Histidine-tagged recombinant N-terminal OprF (amino acid range 25–200; OprF25-200) was overexpressed in Escherichia coli and purified using metal affinity chromatography. Swiss albino mice were immunized with OprF25-200 adjuvanted with Bacillus Calmette–Guérin (BCG) and alum and the immune response was evaluated. Immunized mice developed antigen-specific IgG1 and IgG2a and were protected against challenge by both P. aeruginosa and a clinical isolate of A. baumannii expressing OprF. Serum from OprF25-200-immunized mice showed cross-reactivity with both pathogens using western blotting and whole cell enzyme-linked immunosorbent assay (ELISA). To our knowledge, this is the first report to demonstrate that the N-terminal domain of OprF is sufficiently immunogenic to protect against the two pathogens.

The results show that Wood Chips of Acacia Nilotica trees available in Sudan lands can be successfully used in the gasification process and, on the same basis, as a bio-renewable energy resource. Simulation models were used to characterize the air gasification process integrated with a Regenerative Gas Turbine Unit. The results revealed that at a moisture content of 12%, gasification temperature of 1500 K, pressure of 20 bar, and air-like gasification medium, the biomass gasifier’s flow rate is higher at higher syngas rates. The results verified that there is an optimum ER for each syngas rate, in which the slow growth of the ER revealed the maximum gasifier biomass flow rate. For ER growth at lower levels, the specific fuel consumption (SFC) of the RGT Unit declines sharply from the maximum value reached at 0.27 kg/kW·h at an ER of 5% to the minimum value reached at 0.80 kg/kW·h at an ER of 25% for the lowest gasification temperature of 1000 K. Moreover, ER growths at low levels have a significant effect on the RGT plant’s performance, leading to increased RGT thermal efficiency. The increase in the biomass moisture content led to a sharp decrease in the RGT thermal efficiency. The RGT thermal efficiency remains high at higher gasification pressure. The results revealed that the syngas lower heating value remains high at lower produced syngas rates. At the optimum ER, the H2 mole fraction depicted a value of 1.25%, 0.85% of CO, and 10.50% of CH4 for a lower heating value of 38 MJ/kg syngas. It is shown that the gasification air entered into the gasifier decreases amid the increase in the biomass moisture content. At different syngas rates (3–10 kg/s) and optimum ER, the results predicted that the Wood Chip biomass flow rates decrease when the gasifier efficiency increases. The simulation model revealed that ER growths at lower levels have a significant effect on increasing the power of the RGT plant.

The current study concentrated on effect of red cabbage crude extracts, first: acidified methanol extract by 2.4 mM/L HCl, second: of methanol 80 %, on growth of Escherichia coli and Staphylococcus aureus in solid and liquid media. Each extract was added in 125, 250, and 500 µL/ treatment , it was added to the fixed sterilized disks in solid medium or added to liquid medium, however, the control treatment freed of extracts. All treatments were incubated for 24, 48, and 72 hours at 30 oC when inhibition percentages were calculated and the minimum inhibition concentration (MIC) was measured for both bacteria. The results appeared that red cabbage crude extracts showed significant (p