5324 research outputs found
Sort by
أثر توظيف إستراتيجية الصراع الذهني في التغيير المفاهيمي و التحصيل لطلبة الصف الثامن حول موضوع الأمواج و الصوت
No full text
The antioxidant activity of copper(II) (3,5-diisopropyl salicylate)4 and Its protective effect against streptozotocin-induced diabetes mellitus in rats
No full textOxidative stress has been suggested as a potential contributor to the development of diabetic complications. In this study, we investigated the protective effect of a strong antioxidant copper complex against streptozotocin (STZ)-induced diabetes in animals. Out of four copper complexes used, copper(II) (3,5-diisopropyl salicylate)4 (Cu(II)DIPS) was found to be the most potent antioxidant-copper complex. Pretreatment with Cu(II)DIPS (5 mg/kg) twice a week prior to the injection of streptozotocin (50 mg/kg) has reduced the level of hyperglycemia by 34 % and the mortality rate by 29 %. Injection of the same dosage of the ligand 3,5-diisopropyl salicylate has no effect on streptozotocin-induced hyperglycemia. The same copper complex has neither hypoglycemic activity when injected in normal rats nor antidiabetic activity when injected in STZ-induced diabetic rats. The protective effect of Cu(II)DIPS could be related to its strong antioxidant activity compared to other copper complexes median effective concentration (MEC) = 23.84 μg/ml and to Trolox MEC = 29.30 μg/ml. In addition, it reduced serum 8-hydroxy-2'-deoxyguanosine, a biomarker of oxidative DNA damage, by 29 %. This effect may explain why it was not effective against diabetic rats, when β Langerhans cells were already destroyed. Similar protective activities were reported by other antioxidants like Trolox
Priority setting for prevention and control of coronary heart disease 2013
No full textRana,Khatib:Community and Public Health
Azza,Shoaibi:University of South Carolina
Abdullatif,Husseini:Community and Public Healt
No full textSayre,Edward:This paper presents user's communication
behavior in a pseudo same-room videoconferencing named
“Being Here System,” in comparison with a conventional
videoconferencing. The system extracts the remote person's
figure and superimposes it on the local site's front view in a
large display in real-time. This method makes the local
person feel as if the remote person was before him/her in
his/her spatial environment. To investigate the influence of
the system on user’s communication, the recorded video of
the system evaluation experiment was analyzed. This
revealed that the system significantly affected user's
communication behavior such as turn taking, speech overlap,
and gaze direction
No full textKhateeb,Emad:Dining with a remote person requires that both participants
are available at the same time to eat together. Because of
time-zone differences and other such contingent factors, this
condition can often be hard to fulfill. One solution may lie
in time-shifted communication. A person can enjoy a meal
while watching an earlier recorded video of a remote person’s
dining. However, in a time-shifted environment, achieving
dining synchronization is a challenge. In this research,
we propose a time-shifted tele-dining system (KIZUNA) enabling
people to enjoy a meal together in a virtual environment.
The system adapts the displayed video’s playback
speed to the difference in dining progress between the local
and remote person. This is likely to enhance communication
and increase enjoyment while dining. A validation experiment
revealed that the proposed KIZUNA adaptation method
enhanced diners’ communication behavior, and significantly
enhanced the perceived presence of the remote person, in
comparison with conventional time-shifted tele-dining. This
result suggests a promising future for the KIZUNA system
No full textThis article focuses on the Palestinian political system, its current crisis, its roots, and its
future. The current crisis reached a climax in 2007 with the armed clash between Palestinian
factions. The historical roots of the conflict, however, go much deeper. They are inherently
connected to the legacy passed on to the Palestinian Authority.
The current crisis of the Palestinian Authority has been a frequent subject of constitutional
debates. While the key role of the Basic Law remains indisputable, this written,
constitution-like text seems to be a part of the problem, rather than of the solution.
In this article I will adopt a positivist approach to constitutions only to suggest its deficiency
whenever it leads to formalism in interpreting written constitutions. Instead, Isuggest
using different paradigms that contribute to a better understanding of the role of written
constitutions whenever conflicts between political actors are threatening the same political
structure that made it possible for a political system to exist in the first place.Palestine - Politics and government - 21st centuryGaza Strip - Politics and government - 21st centur
Analysing Palestinian mathematics textbooks
No full textMORGAN,CANDIA:The project reported here aims to produce an analysis of Palestinian
school mathematics textbooks, focusing on the nature of the mathematics
portrayed in the texts and of the mathematical activity expected of
students. The academic collaboration enabled by the project includes
comparison with a sample of English textbooks. We share some results of
an early analysis of two extracts of textbooks and discuss the nature of the
mathematics that students are expected to experience