Guidelines for data collection on energy performance of higher-education buildings in Egypt: a case study

Reliable energy analysis of buildings relies heavily on high-quality data leading to proper indicators. Previous studies have highlighted the importance of data quality in analyzing energy usage in residential and non-residential buildings in order to transform declarations to actions, optimise energy efficiency policies and monitor progress and failures in countries. Collected data must adhere to national and international standards for energy performance in buildings. This study aims to provide practical guidelines for effectively collecting and preparing data suitable for evaluating energy performance in Egyptian higher-education (HE) buildings. The guidelines are developed based on a comprehensive case study, considering data availability in typical educational facilities. Architectural and civil engineering drawings, construction specifications, and occupancy details are accessible. However, actual monthly electrical and natural gas consumption data for individual buildings are lacking. To address this, the study proposes the creation of detailed datasheets for each building, encompassing all energy sources and their electrical and power specifications, such as equipment, machinery, and HVAC systems. These datasheets were utilized to calculate energy consumption and energy usage indicators (EUI). The findings demonstrate that the datasheets enable adequate assessment of energy usage in various spaces within educational buildings, including staff rooms, lecture halls, and laboratories. This facilitates the identification of areas in need of targeted energy efficiency improvements. Notably, the study reveals that electricity consumption in the Faculty of Engineering building is significantly influenced by PCs, laboratories, lighting, and air conditioning

Synthesis and Evaluation of Some New Thiazoles as Antioxidant Additives for Egyptian Lubricating Oils

4-(2-Aminothiazol-4-yl)-phenol (1) reacted with 2-(4-methoxy-benzylidene)-malononitrile or 1,3-diphenyl-1H- pyrazole-4-carbaldehyde to afford enaminonitrile, pyrazolo derivatives 2 and 3, respectively. On the other hand, methylation of 1 afforded the acetyl derivative 4 which reacted with phenyl isothiocyanate, diazonium salt, acetic anhydride, cyclic anhydride, ethyl acetoacetate, benzaldehyde or phosphorous oxychloride to afford compounds 5-9, 11 and 12, respectively. Moreover, the compound 12 reacted with ethyl cyanoacetate to afford compound 13. A one-pot reaction of compound 1 with ethyl acetoacetate and benzaldehyde afforded compound 10. The synthesized compounds were evaluated as antioxidant additives for lube oil. Key words: Key words: Aminothiazole; Condensation; Antioxidant Additive

Nonperturbative Renormalization and the QCD Vacuum

We present a self consistent approach to Coulomb gauge Hamiltonian QCD which allows one to relate single gluon spectral properties to the long range behavior of the confining interaction. Nonperturbative renormalization is discussed. The numerical results are in good agreement with phenomenological and lattice forms of the static potential.Comment: 23 pages in RevTex, 4 postscript figure

Fully Explorable Horned Particles Hiding Charge

The charge-hiding effect by a horned particle, which was studied for the case where gravity/gauge-field system is self-consistently interacting with a charged lightlike brane (LLB) as a matter source, is now studied for the case of a time like brane. From the demand that no surfaces of infinite coordinate time redshift (horizons) appear in the problem we are lead now to a completly explorable horned particle space for traveller that goes through the horned particle (as was the case for the LLB) but now also in addition to this, the horned region is fully visible to a static external observer. This requires negative surface energy density for the shell sitting at the throat. We study a gauge field subsystem which is of a special non-linear form containing a square-root of the Maxwell term and which previously has been shown to produce a QCD-like confining gauge field dynamics in flat space-time. The condition of finite energy of the system or asymptotic flatness on one side of the horned particle implies that the charged object sitting at the throat expels all the flux it produces into the other side of the horned particle, which turns out to be of a "tube-like" nature. An outside observer in the asymptotically flat universe detects, therefore, apparently neutral object. The hiding of the electric flux behind the tube-like region of a horned particle is the only possible way that a truly charged particle can still be of finite energy, in a theory that in flat space describes confinement. This points to the physical relevance of such solutions, even though there is the need of negative energy density at the throat of the horned particle, which can be of quantum mechanical origin.Comment: The new version has been accepted for publication in Classical and Quantum Gravity. Title changed to "Fully Explorable Horned Particles Hiding Charge". Horned Particles terminology is used now instead of "wormholes" to dscribe the solutions here. arXiv admin note: text overlap with arXiv:1108.373

Quantum Deconstruction of a 5D SYM and its Moduli Space

We deconstruct the fifth dimension of the 5D SYM theory with SU(M) gauge symmetry and Chern-Simons level k=M and show how the 5D moduli space follows from the non-perturbative analysis of the 4D quiver theory. The 5D coupling h=1/(g_5)^2 of the un-broken SU(M) is allowed to take any non-negative values, but it cannot be continued to h<0 and there are no transitions to other phases of the theory. The alternative UV completions of the same 5D SYM -- via M theory on the C^3/Z_2M orbifold or via the dual five-brane web in type IIB string theory -- have identical moduli spaces: h >= 0 only, and no flop transitions. We claim these are intrinsic properties of the SU(M) SYM theory with k=M.Comment: 46 Page

اآلثار المتوقعة الستضافة كأس العالم للسيدات تحت سن 17 في لأردن على الممارسة الرياضية لدى طلبة الجامعة الأردنية

The upcoming FIFA Under-17 Women’s World Cup, to be the most important sports event ever held in Jordan as well as in the region, The purpose of this study was to identify the pre-event image of the World women’s Cup for interest in attending games, and to find out if there are differences in the perception of the respondents In addition, the influence of age, gender, economic level, on the images and interest in attending matches, and to find out the assumed legacy of sports events for local com-munities and for the women in particular by focusing on sports practice. Since the most enthusiastic fans should be the youth, the researchers conducted a study on 240 re-spondents, half of them males, to find out the pre-event perceptions of the women’s world cup, sup-posed to be held in Jordan in just two months. The study revealed that just three of the respondent know the exact date of the event, while most of them looking to the event as a recreation occasion more than opportunity to learn from, while the majority considered the event as an inspiration to be proud off more than a motivation to improve their physical level practice. This study concluded that the primary goal of attendance such mega sport events wouldn’t be the en-gagement in sport activity participation, while the national pride could be the most potential positive impact of organizing such events.(6579