Effectiveness of ClassDojo Program in Modifying the Behavior of the Basic Stage Students in Privet Schools

The study investigates the impact of using the ClassDojo Program to modify the behavior of the basic stage students in Jordan. To achieve the study objectives, the quasi-experimental approach is adopted for one group. The study sample consisting of one group of (44) boys and girls from the 3rd grade at Al-Hoffaz Academy in the Capital Governorate Amman is purposefully selected. A study instrument is developed, and its validity and reliability are ensured. The study is applied in the second semester of the academic year 2021/2022. The findings of the study indicate that there is a statistically significant difference between the means of positive and negative behaviors in favor of the post-measurement, demonstrating the efficacy of using the ClassDojo Program to improve students\u27 positive behaviors and reduce negative ones. In light of the results, the study recommends using the Class Dojo Program in classrooms

Remote Sensing Based Analysis of Interactions between Tectonics and Landscapes in Rawanduz River, Northeastern Iraq

تعد منطقة الدراسة والتي تقع على طول الحدود الشمالية الشرقية للعراق موقعًا مثاليًا لاختبار فكرة وجود مؤشر للتنبؤ بالنشاط التكتوني النسبي. تُعتبر منطقة الدراسة هذه منطقة مميزة للغاية حيث تشمل ثلاثة أنطقة تكتونية رئيسية (نطاق الطيات العالية , نطاق التراكب ونطاق التصادم زاكروس) ، اضافة الى كونها تمتاز بمعدلات متغيرة من النشاط التكتوني الناتج عن تصادم الصفيحة العربية مع الإيرانية. تهدف هذه الدراسة إلى تسليط الضوء على إمكانية استخدام برامج أنظمة المعلومات في بناء قاعدة بيانات جغرافية مورفومترية لحوض نهر راوندوز، والذي يعد احد الأحواض الرئيسية لنهر الزاب الأكبر باستخدام نموذج الارتفاع الرقمي لبعثة المكوك الراداري (SRTM) ) , بيانات لتقييم حالة تصريف هذا النهر بمساعدة نظم المعلومات الجغرافية (GIS) والاستشعار عن بعد. تم إجراء التحليل المورفومتري لحوض الصرف راوندوز أثناء قياس الجوانب الخطية والمساحية والتضاريس ، كما نقدم عملية جديدة لتقدير النشاط التكتوني النسبي وفقًا لمؤشرات الجيومورفيك المفيدة في تقييم التشكل والطبوغرافيا. تم تحديد 26 حوضًا فرعيًا في حوض نهر رواندوز. تشمل المؤشرات  الجيومورفية المستخدمة ما يلي: عدم تناسق حوض الصرف (Af) ، ونسبة عرض أرض الوادي إلى ارتفاع الوادي (Vf) ، ومؤشر شكل حوض الصرف (Bs) ، ومؤشر تعرج الجبهة الأمامية الجبلية (Smf). يتم تجميع النتائج من التحليل والتعبير عنها كمؤشر للتكتونيات النشطة النسبية (Iat) ، والتي نقسمها إلى أربع فئات من النشاط التكتوني المنخفض نسبيا إلى العالي.             The study area along the northeast border of Iraq is a perfect location to test the notion of an index to predict relative tectonic activity, as well as being considered a very characteristic area as include three main tectonic zones (High Folded Zone, Imbricate Zone and Zagros Suture Zone). This study area has variable rates of active tectonics resulting from the collision of Arabian and Iranian plates. This study aims at highlighting the possibility of information systems programs in building a morphometric geographic database of the Rawanduz River Basin, which is one of the main basins of the Greater Zab River using Shuttle Radar Topographic Mission (SRTM), Digital Elevation Model (DEM 90 m) data to evaluate the drainage condition of this river with the help of Geographical Information Systems (GIS) and Remote Sensing. The morphometric analysis of the Rawanduz drainage basin has been executed during measurement of linear, areal and relief aspects as well as we offer a new process for estimate relative active tectonics according on geomorphic indices useful in evaluating morphology and topography. A total of 26 sub-basins were delineated in the Rawanduz River Basin. Geomorphic indices used include: drainage basin asymmetry (Af), ratio of valley-floor width to valley height (Vf), index of drainage basin shape (Bs), and index of mountain front sinuosity (Smf). Results from the analysis are accumulated and expressed as an index of relative active tectonics (Iat), which we divide into four classes from relatively low to higher tectonic activity

Characterization of silver nanoparticles prepared by wet chemical method and their antibacterial and cytotoxicity activities

Purpose: To investigate the efficiency of silver nanoparticles synthesized by wet chemical method, and evaluate their antibacterial and anti-cancer activities.Methods: Wet chemical method was used to synthesize silver nanoparticles (AgNPs) from silver nitrate, trisodium citrate dehydrate (C6H5O7Na3.2H2O) and sodium borohydride (NaBH4) as reducing agent. The AgNPs and the reaction process were characterized by UV–visible spectrometry, zetasizer, transmission electron microscopy (TEM) and scanning electron microscopy (SEM) equipped with energy dispersive spectroscopy (EDS). The antibacterial and cytotoxic effects of the synthesized nanoparticles were investigated by agar diffusion method and MTT assay respectively.Results: The silver nanoparticles formed were spherical in shape with mean size of 10.3 nm. The results showed good antibacterial properties, killing both Gram-positive and Gram-negative bacteria, and its aqueous suspension displayed cytotoxic activity against colon adenocarcinoma (HCT-116) cell line.Conclusion: The findings indicate that silver nanoparticles synthesized by wet chemical method demonstrate good cytotoxic activity in colon adenocarcinoma (HCT-116) cell lines and strong antibacterial activity against various strains of bacteria.Keywords: Wet chemical, Silver nanoparticles, Characterization, Diffusion method, Antibacterial, Cytotoxic activit

Isolation and identification of Streptococcus mutans from dental caries patients at Thi-Qar province/Iraq

Dental caries is one of an important common human infectious disease that can lead to loss of tooth structure, it is occur due to the metabolic activation of the plague microorganisms especially Streptococcus mutans bacterium. Eighteen samples from saliva and dental plaque were collected from patients with dental caries active at ages from (7-25) years from Specialized dental hospital and dental clinics at Thi-Qar province during the period from November to December 2016.Thirty-three isolates belong Streptococcus mutans were identified by cultural methods, biochemical tests and Api 20 Strep. system, while  twenty-eight  isolates identified by using Polymerase Chain Reaction (PCR) technique and sequencing of 16S rRNA gene with 507 bp, whereas by using  16S rRNA gene  the result confirmed that these isolates were belong to Streptococcus mutans. The aim of study is Isolation and identification of Streptococcus mutans bacterium from the dental caries and dental biofilm patients at Thi-Qar province by of 16S rRNA gene

Isolation and identification of Streptococcus mutans from dental caries patients at Thi-Qar province/Iraq

Dental caries is one of an important common human infectious disease that can lead to loss of tooth structure, it is occur due to the metabolic activation of the plague microorganisms especially Streptococcus mutans bacterium. Eighteen samples from saliva and dental plaque were collected from patients with dental caries active at ages from (7-25) years from Specialized dental hospital and dental clinics at Thi-Qar province during the period from November to December 2016.Thirty-three isolates belong Streptococcus mutans were identified by cultural methods, biochemical tests and Api 20 Strep. system, while  twenty-eight  isolates identified by using Polymerase Chain Reaction (PCR) technique and sequencing of 16S rRNA gene with 507 bp, whereas by using  16S rRNA gene  the result confirmed that these isolates were belong to Streptococcus mutans. The aim of study is Isolation and identification of Streptococcus mutans bacterium from the dental caries and dental biofilm patients at Thi-Qar province by of 16S rRNA gene

GENETIC PARAMETERS FOR GROWTH PERFORMANCE TRAITS OF EGYPTIAN BARKI LAMBS USING RANDOM REGRESSION MODEL

Variance components and genetic parameters for growth traits were estimated for Barki lambs using the average information REMLF90 (AIREMLF90). A total of 3205 Barki lambs’ records over the period from 1984 to 2017 from experimental Borg Al-Arab station belonging to Animal Production Research Institute (APRI) were analyzed by fitting Random Regression Model (RRM) with Legendre polynomials (LPs) for body weight traits from birth up to 480 days. Gender, type of birth, year, season and age of dam were considered as fixed effects in addition to the fixed regression on Legendre polynomials, while random regression of additive genetic and permanent environmental effects were considered as random factors in the model. The results showed that all fixed factors and some interactions were significant for all studied traits (P<0.05). Quadratic equation was the best description for growth curve. Additive genetic and permanent environment variances ranged from 0.88 to 6.08 and from 0.88 to 15.33 for birth and thirteen months weights, respectively. Additive genetic and permanent environment covariances ranged from 0.05 to 16.06 and from 0.08 to 9.20 for birth with six months weights and for weaning with ten months weights, respectively. Direct and total heritabilities ranged from 0.05 to 0.41 and from 0.08 to 0.74 for four months and birth weights, respectively. Additive, genetic and phenotypic correlation coefficients were the lowest between birth weight with other studied traits and  the highest between ten months weight with other studied traits. Phenotypic variances were oscillated between 2.27 for birth weight to 22.56 for seven months weight, while, residual variances were oscillated between 0.06 for birth weight to 14.05 for four months weight. Therefore, ten months of age recommended to be the best criterion for selecting Egyptian Barki lambs for meat production

Phage typing or CRISPR typing for epidemiological surveillance of Salmonella Typhimurium?

Objective: Salmonella Typhimurium is the most dominant Salmonella serovar around the world. It is associated with foodborne gastroenteritis outbreaks but has recently been associated with invasive illness and deaths. Characterization of S. Typhimurium is therefore very crucial for epidemiological surveillance. Phage typing has been used for decades for subtyping of S. Typhimurium to determine the epidemiological relation among isolates. Recent studies however have suggested that high throughput clustered regular interspaced short palindromic repeats (CRISPR) typing has the potential to replace phage typing. This study aimed to determine the efficacy of highthroughput CRISPR typing over conventional phage typing in epidemiological surveillance and outbreak investigation of S. Typhimurium. Results: In silico analysis of whole genome sequences (WGS) of well-documented phage types of S. Typhimurium reveals the presence of different CRISPR type among strains belong to the same phage type. Furthermore, different phage types of S. Typhimurium share identical CRISPR type. Interestingly, identical spacers were detected among outbreak and non-outbreak associated DT8 strains of S. Typhimurium. Therefore, CRISPR typing is not useful for the epidemiological surveillance and outbreak investigation of S. Typhimurium and phage typing, until it is replaced by WGS, is still the gold standard method for epidemiological surveillance of S. Typhimurium

Genome-wide association study identifies multiple susceptibility loci for pancreatic cancer

We performed a multistage genome-wide association study (GWAS) including 7,683 individuals with pancreatic cancer and 14,397 controls of European descent. Four new loci reached genome-wide significance: rs6971499 at 7q32.3 (LINC-PINT; per-allele odds ratio [OR] = 0.79; 95% confidence interval [CI] = 0.74–0.84; P = 3.0×10−12), rs7190458 at 16q23.1 (BCAR1/CTRB1/CTRB2; OR = 1.46; 95% CI = 1.30–1.65; P = 1.1×10−10), rs9581943 at 13q12.2 (PDX1; OR = 1.15; 95% CI = 1.10–1.20; P = 2.4×10−9), and rs16986825 at 22q12.1 (ZNRF3; OR = 1.18; 95% CI = 1.12–1.25; P = 1.2×10−8). An independent signal was identified in exon 2 of TERT at the established region 5p15.33 (rs2736098; OR = 0.80; 95% CI = 0.76–0.85; P = 9.8×10−14). We also identified a locus at 8q24.21 (rs1561927; P = 1.3×10−7) that approached genome-wide significance located 455 kb telomeric of PVT1. Our study has identified multiple new susceptibility alleles for pancreatic cancer worthy of follow-up studies

A and Abdou: The Protective effect of Morus Alba and Calendula Officinalis plant extracts on carbon tetrachloride- induced hepatotoxicity in isolated rat hepatocytes

ABSTRACT: Liver is prone to xenobiotic-induced injury because of its central role in xenobiotics metabolism, its portal location within the circulation, and its anatomic and physiologic structure (Jones, 1996). Herbal medicine is the most widely used form of medicine in the world today where the medicinal plants contain curative bioactive ingredients such as alkaloids, coumarins, saponins and flavonoids (Halberstein, 2005). The present work was planned to evaluate the potential hepatoprotective effects of morus alba and calendula officinalis extracts against cytotoxicity and oxidative stress induced by carbon tetrachloride (CCl 4 ) in isolated primary rat hepatocytes. Hepatocytes were isolated by collagenase perfusion two steps technique. Cytotoxicity was determined by assessing cell viability and leakage of cytosolic enzymes, such as alanine aminotransferase (ALT), aspartate aminotransferase (AST) and lactate dehydrogenase (LDH). Oxidative stress was assessed by determining reduced glutathione (GSH) level and lipid peroxidation as indicated by thiobarbituric acid reactive substances (TBARS) production. Exposure of isolated rat hepatocytes to CCl 4 caused cytotoxicity and oxidative injury, manifested by loss of cell viability and significant increase in ALT, AST and LDH leakages. As well as, CCl 4 caused progressive depletion of intracellular GSH content and significant enhancement of TBARS accumulation. Pre-incubation of hepatocytes with either morus alba and calendula officinalis extracts ameliorated the hepatotoxicity and oxidative stress induced by CCl 4 , as indicated by significant improvement in cell viability and enzymes leakages (ALT, AST and LDH). Also, significant improvement of GSH content and significant decrease in TBARS formation as compared to CCl 4 treated cells. The present study indicate the morus alba and calendula officinalis extracts possess a highly promising hepatoprotective effects against CCl 4 -induced hepatotoxicity