The efficacy of the CABRI 3D program in increasing academic achievement in mathematics of middle students in Arar City

The present research aimed to investigate the efficacy of the CABRI 3D Program in increasing the academic achievement in mathematics of middle school students in Arar city, Northern Border Region. Through its general objective, the study sought to answer the following key question: Are there statistical differences in the academic achievement in mathematics of the members of the study sample as a result of the implementation of the CABRI 3D Program? Methodology and research methods. The study sample consisted of (70) junior high school students in public schools in Arar city. The sample was distributed randomly between a first control group of (36) students and a second test group of (34) students, who learned using the CABRI 3D Program. After conducting the study, all arithmetic means were extracted, along with the standard deviations of the overall scores of the individuals in the sample, Results, and scientific novelty. The results of the study indicated that the students in the test group on whom the CABRI 3D Program was implemented had better direct and deferred academic achievement than the students in the control group who learned in the traditional way

Evaluation of the Learning Environment for Diploma in Family Medicine with the Dundee Ready Education Environment (DREEM) Inventory

The primary healthcare system is at a turning point in Saudi Arabia. However, the sustainability of family medicine as the core element of that system is increasingly being called into question because of lack of family physicians. In keeping view this problem; a postgraduate diploma program in family medicine has started in 2008. A validated measure of educational environment i.e., Dundee Ready Education Environment (DREEM) questionnaire consisting of 50 questions having five domains of perception was administered to all 13 trainees of the diploma course at the completion of the program to check their perception about learning evironment. The trainees comprised of 4 males (40%) and 6 females (60%). The overall score showed more positive than negative side (147/200). There is no significant difference (P > 0.05) in the mean scores of five different domains of perception. The subclasses of five domains showed that teaching perceived as positive by 50%, moving towards right direction by 80%, feeling more positive by 50%, positive attitude by 80% and the 70% scored the course as not too bad. The overall high score and positive attitude towards the course assures the better teaching environment. However, there are areas to improve and it requires continuous evaluation

Impact of Pre-Anthesis Water Deficit on Yield and Yield Components in Barley (\u3ci\u3eHordeum vulgare\u3c/i\u3e L.) Plants Grown under Controlled Conditions

Drought at pre-anthesis stages can influence barley growth and results in yield losses. Therefore, it is important to understand how drought at pre-anthesis can affect different traits associated with yield reduction in barley. The objective of this study was to understand the relevance of the genetic background of major flowering time genes in barley plants subjected to pre-anthesis drought and its impact on yield and yield components. A glasshouse experiment using a Randomized Complete Block Design was conducted to investigate the effect of drought and its timing on yield and yield components on eleven barley genotypes, which were selected to represent genetic diversity of major flowering time genes (PPDH1, PPDH2, HvVrn1, HvVrn2 and HvVrn3). Barley plants were exposed to three water regimes, non-stressed and stressed, which was applied at two pre-anthesis growth stages, tillering (SS) and stem elongation (SE). Results identified differences among genotypes in all measured traits. Grain yield, grain number and thousand kernel weight were reduced in all genotypes due to drought, irrespective of the growth stage. Early flowering genotypes had better performance as reflected in higher yield compared with late flowering genotypes. Results verified the fundamental importance of early flowering to improve productivity in response to pre-anthesis drought. The results of this study can help in selecting barley lines for future breeding purposes with improved resilience to drought conditions in Mediterranean environments

Cloud Forensics : Isolating Cloud Instance

Cloud computing has been the trending model for storing, accessing and modifying the data over the Internet in the recent years. Rising use of the cloud has generated a new concept related to the cloud which is cloud forensics. Cloud forensics can be defined as investigating for evidence over the cloud, so it can be viewed as a combination of both cloud computing and digital forensics. Many issues of applying forensics in the cloud have been addressed. Isolating the location of the incident has become an essential part of forensic process. This is done to ensure that evidence will not be modified or changed. Isolating an instant in the cloud computing has become even more challenging, due to the nature of the cloud environment. In the cloud, the same storage or virtual machine have been used by many users. Hence, the evidence is most likely will be overwritten and lost. The proposed solution in this paper is to isolate a cloud instance. This can be achieved by marking the instant that reside in the servers as "Under Investigation". To do so, cloud file system must be studied. One of the well-known file systems used in the cloud is Apache Hadoop Distributed File System (HDFS). Thus, in this paper the methodology used for isolating a cloud instance would be based on the HDFS architecture

Frequency of venous thromboembolism during hajj sessions 2017-2019 in Makkah, Saudi Arabia

Background: Venous thromboembolism (VTE) includes deep vein thrombosis (DVT) and pulmonary embolism (PE), both are serious health risks. In western countries, VTE affects about 114 to 184 people per 100,000. Asian populations have a significantly lower incidence than western populations. The true incidence of VTE is still not well documented in Saudi Arabia (KSA). There are different major risk factors especially in hajj season that predispose a person to thrombosis. The mortality rate of autopsy-based pulmonary embolism reaches up to 30%. Methods: This single-centered retrospective descriptive study was done in security forces hospital Makkah, Saudi Arabia during hajj period (30 days) for consecutive three-year. All admitted confirmed DVT and PE patients (N=32) of both genders with age >14 years were included. Patients’ data were extracted from the electronic medical record. Data were analysed by SPSS version 23. Results: Deep venous thrombosis (DVT) was developed in 67.7% while 19.3% of patients suffered from pulmonary embolism (PE) out of a total of 32 subjects. Females were more affected by 18 (56.3%) than males by 14 (43.8%). The mean age of patients was 51.78 years (SD ±16.21). A statistically significant association (p<0.005) between provoked VTE status and age, immobility, and history of surgery was seen. There was no mortality documented in this study. Conclusions: This study provides insights into hajj period hospital admitted patients’ frequency of VTE, changing patient profiles, management strategies, and subsequent outcomes in patients with venous thromboembolism. There is a need for greater awareness of VTE prophylaxis about its prevention, especially in hajj season

Structure–Activity Relationship Studies of α-Ketoamides as Inhibitors of the Phospholipase A and Acyltransferase Enzyme Family

The phospholipase A and acyltransferase (PLAAT) family of cysteine hydrolases consists of five members, which are involved in the Ca2+-independent production of N-acylphosphatidylethanolamines (NAPEs). NAPEs are lipid precursors for bioactive N-acylethanolamines (NAEs) that are involved in various physiological processes such as food intake, pain, inflammation, stress, and anxiety. Recently, we identified alpha-ketoamides as the first pan-active PLAAT inhibitor scaffold that reduced arachidonic acid levels in PLAAT3-overexpressing U2OS cells and in HepG2 cells. Here, we report the structure-activity relationships of the alpha-ketoamide series using activity-based protein profiling. This led to the identification of LEI-301, a nanomolar potent inhibitor for the PLAAT family members. LEI-301 reduced the NAE levels, including anandamide, in cells overexpressing PLAAT2 or PLAAT5. Collectively, LEI-301 may help to dissect the physiological role of the PLAATs

Activity-based protein profiling identifies α-ketoamides as inhibitors for Phospholipase A2 Group XVI

Phospholipase A2, group XVI (PLA2G16) is a thiol-hydrolase from the HRASLS family that regulates lipolysis in adipose tissue and has been identified as a host factor enabling the cellular entry of picornaviruses. Chemical tools are essential to visualize and control PLA2G16 activity, but have not been reported to date. Here we show that MB064, a fluorescent lipase probe, also labels recombinant and endogenously expressed PLA2G16. Competitive activity-based protein profiling (ABPP) using MB064 enabled the discovery of α-ketoamides as the first selective PLA2G16 inhibitors. LEI110 was identified as a potent PLA2G16 inhibitor (Ki = 20 nM) that reduces cellular arachidonic acid levels and oleic acid-induced lipolysis in human HepG2 cells. Gel-based ABPP and chemical proteomics showed that LEI110 is a selective pan-inhibitor of the HRASLS-family of thiol hydrolases (i.e. PLA2G16, HRASLS2, RARRES3 and iNAT). Molecular dynamic simulations of LEI110 in the reported crystal structure of PLA2G16 provided insight in the potential ligand-protein interactions to explain its binding mode. In conclusion, we have developed the first selective inhibitor that can be used to study the cellular role of PLA2G16.Medicinal Chemistr

Prevalence and risk factors of hepatitis B and C viruses among haemodialysis patients in Gaza strip, Palestine

<p>Abstract</p> <p>Background</p> <p>The prevalence of hepatitis B virus (HBV) and hepatitis C virus (HCV) and its associated risk factors among haemodialysis (HD) patients in Gaza strip was investigated using serological and molecular techniques.</p> <p>Results</p> <p>The overall prevalence of HBV among the four HD centers was 8.1%. The main risk factors were HD center (p = 0.05), history of blood transfusion (p < 0.01), and treatment abroad (p = 0.01). The overall prevalence of HCV among the four HD centers was 22%. The main risk factors were HD center (p < 0.01), time duration on HD (p < 0.01), history of blood transfusion (p < 0.01), treatment abroad (p < 0.01), and history of blood transfusion abroad (p < 0.01). Serum aminotransferases levels decreased in HD patients compared with normal population but still there was a direct association between the activity of liver enzymes and both HBV (p < 0.01) and HCV (p < 0.01) infection.</p> <p>Conclusion</p> <p>The much higher prevalence of Hepatitis viruses among HD patients compared to the normal population of Gaza strip indicates a causative relation between HD and hepatitis viruses transmission. Therefore extremely careful observation of preventive infection control measures is essential to limit Hepatitis viruses' transmission in HD centers.</p