Background: otitis media (OM) also known as middle ear disease is an inflammation of the middle ear cleft, where infection leads to the effusion of fluids into the middle ear. In developing countries, otitis media is the main cause of hearing impairment. There are several factors that enhance the presence of otitis media, including genetic, environmental and demographic. Aim of the study: this study aimed to investigate the prevalence and risk factors of otitis media in adults. Methods: this study included 117 participants and it based on an online survey, the survey was divided into two parts. The data were collected in excel sheet and analyzed by SPSS. Results: the prevalence rate of OM was 40.2%, there were significance differences between health individuals and OM patients regarding chronic diseases (P value=0.01) and allergy (P value=0.001). Conclusion: the prevalence of OM was low, chronic disease and allergy were risk factors for OM.

Background: Dyslipidemia is defined as defect or over production of lipoprotein, it is a consequence of obesity. Dyslipidemia can result in several complications and diseases including stroke, cardiovascular diseases and arthrosclerosis. The prevalence of both obesity and dyslipidemia are increasing as a result of change in dietary content and change in life styles. Aim: To investigate the prevalence of dyslipidemia in obese patients. Methods: The study included 150 participants who were divided into 2 groups; the obese group and nonobese group. Total cholesterol, LDL, HDL and triglycerides were estimated for all individuals. Results: There were 90 obese person and 60 non-obese individuals. The mean± SD of TC for non-obese participants and obese was 191±12.7 mg/dl and 234.5±14.2 mg/dl respectively (P-value=0.04), while for LDL was 97.2± 5.4 mg/dl for non-obese and 166± 7.3 mg/dl for obese (P-value=0.02). Triglycerides mean ± SD for non-obese was 117.7±5.3 mg/dl and for obese was 160.7±12.4 mg/dl (P-value=0.012), regarding HDL mean± SD was 117.7± 7.2 mg/dl for non-obese and 160.8± 12.6 mg/dl for obese individuals (P-value=0.044). Conclusion: The prevalence of dyslipidemia was high in obese patients and the most common type was hypertriglyceridemia.

Background: appendicitis is the inflammation of appendix which requires appendectomy for treatment. Appendectomy involves the surgical removal of the appendix. Early diagnosis and early appendectomy performing results in a good outcome of the surgery. The traditional strategy was an open surgery, while the modern one is laparoscopic appendectomy. However both have complications. Aim of the work: this study aimed to investigate the predictors of length stay, complications and patient satisfaction after performing an appendectomy. Methods: this study based on a simple online survey which composed of 2 parts. The data were collected using an excel sheet and analyzing data were performed using SPSS. Results: complication after surgery included presence of abscess which represented 88.7%, suffering from complications which represented 69.3% and wound infection which represented 5.7%. The range of hospital stay was 1 to 10 days with a mean± SD of 3.9± 2.4 days. 39.6% of participants had good satisfaction, 35.8% had very good satisfaction, 15.1% and 9.4% had a fair and bad level of satisfaction. Males had mean± SD of hospital stay = 4.69 days, while females had mean± SD 2.9 days. Mean ± SD of hospital stay for patients with chronic diseases was 5.14±2.34, while for those without chronic diseases it was 3.56±2.31. Conclusion: the most common complication for appendectomy was abscess after the operation, individuals reported good level of satisfaction. Male gender had chronic disease were associated with longer hospital stay.

High number of users, connected devices and services on the Internet producing high traffic and load on the web servers causes a degradation of the quality of Internet services. A possible solution to this problem is to use a cluster of web servers. The cluster requires a load balancer to provide scalability and high performance of the services offered. The main load balancer is the only entry point to the server cluster in this architecture. In this paper, the researchers propose a two-tier load balancer rather than a single one to achieve more scalability and reduce the load on the main load balancer. The study also compared three features, Response Time Average, the load balancer CPU Utilization, and Servers’ CPU Utilization. The comparison uses three algorithms (Round Robin, Number of Connections, and Least Load) through two experiments. The results concluded that the Multi-Tier Load Balancing method offered better CPU utilization than a Single-Tier Load Balancing method for Round Robin and Server Load algorithms. However, the Single-Tier Load Balancing method provided better response time for all three algorithms. Moreover, the Round Robin and Server Load algorithms using a Multi-Tier method balanced the CPU utilization for all servers. This result shows the Multi-Tier method handles huge traffic and large number of servers with better CPU utilization.