Energy drinks containing caffeine, taurine, and glucose may improve mood and cognitive performance. However, there are no studies assessing the individual and interactive effects of these ingredients. We evaluated the effects of caffeine, taurine, and glucose alone and in combination on cognitive performance and mood in 24-hour caffeine-abstained habitual caffeine consumers. Using a randomized,...

Preparation of cassava seeds using a machete or hand saw takes long time, the results are not uniform, and there is potential for damage to seedlings. The double block cutter type stem cutting machine has been designed produce high capacity good quality seeds. This study aims test performance with type. Performance tests include measuring working capacity, fuel consumption, seed uniformity, pla...

Approximately 10% of the employed population in the United States works in multiple jobs. They are more likely to work long hours and in nonstandard work schedules, factors known to impact sleep duration and quality, and increase the risk of injury. In this study we used multivariate regression models to compare the duration of sleep in a 24-hour period between workers working in multiple jobs ...

BACKGROUND The introduction of the European Working Time Directive (EWTD) has greatly reduced training hours of surgical residents, which translates into 30% less surgical and clinical experience. Such a dramatic drop in attendance has serious implications such compromised quality of medical care. As the surgical department of the University of Heidelberg, our goal was to establish a model that...

BACKGROUND AND OBJECTIVES In July 2010, the Accreditation Council for Graduate Medical Education (ACGME) published its proposed duty-hour regulations. We conducted a national online survey to assess current family medicine residents' perceptions of the proposed changes. METHODS A 27-question survey was used to assess four ACGME proposal domains: resident supervision, 80-duty-hour week, maximu...

Effective management of a machine’s memory resources needs comprehensive information regarding the realtime memory consumption of applications. Memory demands can be estimated accurately by tracking the working set sizes of programs. We propose a software approach for monitoring the working set size of applications, based on Denning’s mathematical model of working sets. This technique is implem...

Concerns regarding the scalability of the inter-domain routing have encouraged researchers to start elaborating a more robust Internet architecture. While consensus on the exact form of the solution is yet to be found, the need for a semantic decoupling of a node’s location and identity is generally accepted as the only way forward. One of the most successful proposals to follow this guideline ...

Abstract. With a total area of ± 100 Ha. The purpose this study is to determine the obstacles that occur during production, availability and work efficiency mechanical equipment, production tonnage crushing plant equipment. Processing andesite minerals at unit PT X consists three stages, namely primary using jaw crusher (Metso C-140), secondary cone 1 (CMC PCC4A) tertiary crushers 2 & 3 (NH...

A new route consisting of simultaneous centrifugal spinning and solution blowing to form polymer nanofibers is reported. The fiber diameter (60-1000 nm) is shown to be a function of polymer concentration, rotational speed, and working pressure of the processing system. The fiber length is dependent on the rotational speed. The process can deliver 6 kg of fiber per hour and therefore offers mass...