Enhancement of Water Electrolyzer Efficiency

In this project, factors affecting efficiency of water electrolysis such as the electrolyte type, electrodes spacing, electrodes surface morphology (smooth or rough), electrodes effective area (or number of electrodes) and electrodes connection configuration were investigated. The efficiency was calculated as the ratio between the HHO flow rate measured experimentally to that measured theoretically from Faraday’s law. It is found that the best efficient electrolyzer consists of 22 plates (4 anodes, 4 cathodes and 14 neutrals) where each plate area was 17x15 cm2. When the 22 plates were connected in parallel and immersed in 20 g KOH/3L electrolyte, they produced HHO gas flow rate of 740 ml/min at 17 A and 62.92 % efficiency. Keywords: Energy, HHO, Hydrogen, Electrolysis, Efficiency, Environment

Criminal Liability for Board of Director’s Members in Public Shareholding Companies in Jordanian Companies Law

This study dealt with criminal liability for board of director’s members of public shareholding companies in Jordanian Companies Law, in addition to Jordanian criminal code. Criminal liability of legal person has been clarified through this study; also boards of director’s crimes were determined by a number of results. The most important of these is the fact that criminal liability applied to the legal person is exactly the same for the natural person, taking into consideration the nature of legal person and the corresponding criminal penalties

MARS: Machine learning-based Adaptable and Robust network management for Software-defined networks

MARS is an adaptable and robust network management approach using machine learning while considering the control plane architecture for software-defined networks. Project goal is enhancing the network resource utilization and SDN scalability

Predicting Implementation Citizenship Behavior Rating Discrepancies Between Supervisor-Subordinate Dyads

Organizational citizenship behavior (OCB), defined as behavior that is discretionary and not directly or explicitly recognized by the formal reward system, has gained significant interest in the literature over the past few decades. Recent OCB research has begun to address more specialized facets of citizenship behavior that target behaviors that support specific strategic goals in the organization. One form of OCB encompasses those behaviors that assist with the implementation of new practices or innovations in the organization, above and beyond typical implementation. This study extends both the general OCB literature and the newer literature on implementation citizenship by examining factors that predict the agreement between employee self-ratings and their supervisor\u27s ratings of their implementation citizenship behavior. Demographic and contextual variables were examined as possible predictors of more or less agreement. Based on data from 400 substance use treatment providers under 70 supervisors, the results did not find support for the hypotheses. However, supplemental results did provide some new insights, such as the tendency for ratings to become more or less variable as a result of the study predictors. Implications and directions for future research are discussed

Privatisation in Poland (1989-1995): Its origins,development, and initial impact

Abstract Not Provided

Improvement of Manure Adsorption Capacity for Cobalt Removal by Chemical Treatment with Citric Acid

This paper focuses on how the surface chemical groups of sheep manure affect the adsorption capacity of cobalt ions. Improvement in cobalt ions uptake onto sheep manure was achieved successfully by introducing more carboxylic functional groups into its surface due to citric acid treatment. According to Langmuir model, cobalt ions uptake was increased from 22.88 mg/g for dried sheep manure (D-SM) to 37.45 mg/g when D-SM was treated with 0.6 M citric acid (C-SM). Point of zero charge and cation exchange capacity were determined and found as 4.3 and 82 meq/100g for D-SM while it was found as 3.4 and 281 meq/100g for C-SM, respectively. The effects of process parameters such as solution pH, initial concentration of cobalt ions, contact time and concentration of citric acid on the uptake of cobalt ions were also investigated. Langmuir and Freundlich models were applied to the experimental data. Both models fitted quite well with the experimental data

Decontamination of Cu2+ - Tainted Water through Biosorption onto Palm Tree Leaf Particles

In this study, the potential use of Palm Tree Leaf (PTL) particles for the removal of copper ions from aqueous solution was investigated. The effects of shaking time, Cu2+ concentration and equilibrium pH on the biosorption of copper ions from aqueous solution were studied. Batch biosorption experiments proved the technical feasibility of using PTL particles to remove copper ions from aqueous solutions, where Cu2+ uptake of 17.6 mg/g was observed. The biosorption of copper on PTL particles was pH dependent and maximum copper sorption was found to occur at an equilibrium pH of 5.5. The equilibrium sorption data of copper on PTL particles was described by 2 two-parameter isotherm models: the Freundlich and the Langmuir models, as well as by the three-parameter Redlich-Peterson model. While all three models proved a good fit for the equilibrium sorption data, CFEF non-linear regression analysis indicated that the Redlich-Peterson model resulted in the best fit. Dynamic studies revealed that the initial uptake of copper on PTL particles was rapid, where equilibrium was established within 15 minutes and that the data followed the pseudo second-order reaction

Physical Activity Reduces Hippocampal Atrophy in Elders at Genetic Risk for Alzheimer\u27s Disease

We examined the impact of physical activity (PA) on longitudinal change in hippocampal volume in cognitively intact older adults at varying genetic risk for the sporadic form of Alzheimer\u27s disease (AD). Hippocampal volume was measured from structural magnetic resonance imaging (MRI) scans administered at baseline and at an 18-month follow-up in 97 healthy, cognitively intact older adults. Participants were classified as High or Low PA based on a self-report questionnaire of frequency and intensity of exercise. Risk status was defined by the presence or absence of the apolipoprotein E-epsilon 4 (APOE-ε4) allele. Four subgroups were studied: Low Risk/High PA (n = 24), Low Risk/Low PA (n = 34), High Risk/High PA (n = 22), and High Risk/Low PA (n = 17). Over the 18 month follow-up interval, hippocampal volume decreased by 3% in the High Risk/Low PA group, but remained stable in the three remaining groups. No main effects or interactions between genetic risk and PA were observed in control brain regions, including the caudate, amygdala, thalamus, pre-central gyrus, caudal middle frontal gyrus, cortical white matter (WM), and total gray matter (GM). These findings suggest that PA may help to preserve hippocampal volume in individuals at increased genetic risk for AD. The protective effects of PA on hippocampal atrophy were not observed in individuals at low risk for AD. These data suggest that individuals at genetic risk for AD should be targeted for increased levels of PA as a means of reducing atrophy in a brain region critical for the formation of episodic memories

Recognition of Famous Names Predicts Cognitive Decline in Healthy Elders

Objective: The ability to recognize familiar people is impaired in both Mild Cognitive Impairment (MCI) and Alzheimer’s Dementia (AD). In addition, both groups often demonstrate a time-limited temporal gradient (TG) in which well known people from decades earlier are better recalled than those learned recently. In this study, we examined the TG in cognitively intact elders for remote famous names (1950–1965) compared to more recent famous names (1995–2005). We hypothesized that the TG pattern on a famous name recognition task (FNRT) would predict future cognitive decline, and also show a significant correlation with hippocampal volume. Method: Seventy-eight healthy elders (ages 65–90) with age-appropriate cognitive functioning at baseline were administered a FNRT. Follow-up testing 18 months later produced two groups: Declining (≥ 1 SD reduction on at least one of three measures) and Stable (\u3c 1 SD). Results: The Declining group (N = 27) recognized fewer recent famous names than the Stable group (N = 51), although recognition for remote names was comparable. Baseline MRI volumes for both the left and right hippocampi were significantly smaller in the Declining group than the Stable group. Smaller baseline hippocampal volume was also significantly correlated with poorer performance for recent, but not remote famous names. Logistic regression analyses indicated that baseline TG performance was a significant predictor of group status (Declining vs. Stable) independent of chronological age and APOE ε4 inheritance. Conclusions: The TG for famous name recognition may serve as an early preclinical cognitive marker of cognitive decline in healthy older individual