University of Jordan

About: University of Jordan is a education organization based out in Amman, Jordan. It is known for research contribution in the topics: Population & Medicine. The organization has 7796 authors who have published 13764 publications receiving 213526 citations.

Factors Influencing Citizen Adoption of E-Government in Developing Countries: The Case of Jordan

Abstract: The main purposes of this study are to investigate citizen adoption of e-government services in Jordan and to explore factors affecting the level of adoption of e-government services. Importantly, this study aims to develop a conceptual framework that is based on previous literature of Technology Acceptance Model TAM in order to examine the relationships between certain factors government trustworthiness, service quality and citizen satisfaction and citizen adoption of e-government services. A self-administered questionnaire was used to capture data from 356 Jordanian citizens across the country randomly. The findings indicate that perceived usefulness, perceived ease of use, citizen satisfaction and trustworthiness are significant predictors of the Jordanian intention to use an e-government service. The results also showed that the service quality dimensions: responsiveness, reliability, and empathy have significant impacts on the citizen satisfaction. The study has made significant contributions to the body of knowledge at academic and practical levels as an important exploratory study that was conducted in the context of Jordan, a developing country with genuine need for more research works on e-government issues. In addition, this study provides some valuable insights into the performance and adoption of e-government in Jordan that could help government agencies to improve the effectiveness of their services.

Technical possibilities of bioethanol production from coffee pulp: a renewable feedstock

Abstract: The present paper investigated the technical possibilities of bioethanol production from coffee pulp in a sustainable manner. Coffee pulp is a largely underutilized waste stream and has the potential to become a bioethanol feedstock if processing is economically viable. This study aimed to characterize the chemical composition of coffee pulp with relevance to bioethanol production and to compare results to other bioethanol feedstocks. Based on the total sugar yield, we investigated bioethanol production using AspenPlus simulation software. In the sugar characterization part, total carbohydrates were measured after complete acid hydrolysis of dry pulp, while water-soluble carbohydrates were measured after acid hydrolysis of soxhlet extracted solutions. Moisture, lignin, and ash contents were measured gravimetrically after appropriate heating treatments. The results showed sugar contents, expressed as percentages of dry mass, as follows: 5.8, 5.2, 20.2, 4.2, and 4.7 % for arabinose, galactose, glucose, xylose, and mannose, respectively. Arabinose, galactose, and glucose were the only water-extracted simple sugars, at 1.0, 1.4, and 2.6 % of dry mass, respectively. AspenPlus simulation was based on processing 10,000 ton/day of coffee pulp. The results demonstrated sugar and ethanol yield of 2100 and 1050 ton/day, respectively. This would make annually profit of $0.13 million. The simulation estimated the capital investment cost was about $2 million. In order to satisfy the process economy, the process operation cost must be operated at minimum of $1.87 million annually. The life-cycle analysis showed the net value of energy of the whole process is an economical as well as the balance of CO2 emission/reduction was on the environmental favor.

Adiponectin serum levels correlate with insulin resistance in type 2 diabetic patients.

Abstract: The adipose tissue is not only an inert storage depot for lipids, but also it secretes a variety of bioactive molecules, known as adipokines, which affect whole-body homeostasis. Adiponectin is the most abundant of these adipocytokines and is known to have a regulatory effect on the metabolism of glucose and lipid. The main objectives of this study were to evaluate the serum levels of adiponectin and to establish a correlation between adiponectin serum levels and the degree of insulin resistance in type 2 diabetic patients. Eighty participants were enrolled in this study; 61 type 2 diabetic patients and 19 apparently healthy subjects. Serum level of adiponectin was measured by enzyme-linked immunosorbent assay (ELISA) for each participant. Data collection sheet was filled with all required information for each participant. Adiponectin level in the diabetic patients (5.05 ± 2.61 μg/ml) was lower than in non-diabetic healthy controls (5.71 ± 2.35 μg/ml). When the results were compared according to gender, diabetic females showed significantly higher adiponectin levels (5.76 ± 2.64 μg/ml) than diabetic males (4.366 ± 2.43 μg/ml, P = 0.035). In addition, female diabetic patients with abdominal obesity (waist circumference (WC) ⩾ 88 cm) had lower adiponectin levels (5.58 ± 2.58 μg/ml) than diabetic females without abdominal obesity (6.96 ± 3.12 μg/ml). The correlation analysis indicated that adiponectin had a significant positive correlation with age (r = -0.450, P < 0.001). In conclusion, female diabetic patients had a statistically significant higher adiponectin level than male diabetic patients which could indicate a gender effect. Adiponectin levels were inversely related to insulin resistance; as patients with abdominal obesity had lower serum levels of adiponectin.

Spectrophotometric study of the photodecomposition kinetics of nifedipine.

Abstract: Nifedipine is a photosensitive compound. Irradiation for 4 h under a fluorescent lamp placed 30 cm from a solution of nifedipine in 95% ethanol leads to complete photo-oxidation as determined spectrophotometrically. The disappearance of the reduced form and appearance of the oxidized form is best described by zero-order kinetics at concentrations higher than 4 x 10(-4) M. At lower concentrations pseudo-first order kinetics are followed. Monochromatic irradiation of nifedipine at wavelengths 400 to 700 nm in 25 nm increments showed no change in the absorbance at 280 nm, and, except for a hyperchromic effect at 237 nm, no other spectral changes were observed. Its photo-oxidation was dependent on the intensity of light and increased exponentially as solutions were irradiated progressively closer to a fluorescent light source. The pH studies showed that aqueous solutions of nifedipine photo-oxidized fastest at pH 2.