Einsatz von Wandtafel und Kreide im DaF-Unterricht an Universität Oran2

The Use of blackboard and chalkboard in Deutsch lessons at The University of Oran2 The blackboard remains the most important medium not only at school, but also at university, it is available in every classroom, it is and will always remain the only teaching tool that is available in all classrooms and ist use for teaching forign languages is rather inevitable. The blackboard and chalk have their importance in Deutsch lessons and their topicality at Oran2 University and at this point it was shown through this paper that studenst and teachers still make use of the blackboard and chalk although other reactions have been noticed, namely the appeal to the new technology as a medium for Deutsch instruction. The main question was for all those learning a foreign language, in particular those teaching Deutsch at Oran2 university. Apart from teaching books, what type of medium do you refer to in your classes, and for each medium, how do you use it? The results of these questioning showed that the chalkboard is the most popular method and an effective teaching tool for learning the German language because it encourages the students to get involved in the teaching/learning process and promote their motivation. This allows for the exchange of ideas and information and creates a good climate for learning. The learners can thereby consolidate their knowledge, although they have different problems, like Chalk dust, etc. As such, the chalk board was considered as an optional for teacher.and in order to support the achievement of the learning objective with this medium, the students must be familiar with it

Alterations of the Erythrocyte Membrane during Sepsis

Erythrocytes have been long considered as “dead” cells with transport of oxygen (O2) as their only function. However, the ability of red blood cells (RBCs) to modulate the microcirculation is now recognized as an important additional function. This capacity is regulated by a key element in the rheologic process: the RBC membrane. This membrane is a complex unit with multiple interactions between the extracellular and intracellular compartments: blood stream, endothelium, and other blood cells on the one hand, and the intracytoplasmic compartment with possible rapid adaptation of erythrocyte metabolism on the other. In this paper, we review the alterations in the erythrocyte membrane observed in critically ill patients and the influence of these alterations on the microcirculatory abnormalities observed in such patients. An understanding of the mechanisms of RBC rheologic alterations in sepsis and their effects on blood flow and on oxygen transport may be important to help reduce morbidity and mortality from severe sepsis

A new device for measurement of fibrin clot lysis: application to the Euglobulin Clot Lysis Time

BACKGROUND: Determination of clot lysis times on whole blood, diluted whole blood, plasma or plasma fraction has been used for many years to assess the overall activity of the fibrinolytic system. We designed a completely computerised semi-automatic 8-channel device for measurement and determination of fibrin clot lysis. The lysis time is evaluated by a mathematical analysis of the lysis curve and the results are expressed in minute (range: 5 to 9999). We have used this new device for Euglobulin Clot Lysis Time (ECLT) determination, which is the most common test used in laboratories to estimate plasma fibrinolytic capacity. RESULTS: The correlation between ECLT and manual method is very tight : R = 0,99; p < 10(-6). The efficiency scores of the method are <4% in intra-assay and <7% in inter-assay. It allows to achieve the tests on hyperlipaemic samples. This new device has been easily integrated in laboratory routine and allows to achieve several ECLT every day without disturbance of laboratory workflow. CONCLUSIONS: The routine use of this new device could be useful in various situations such as assessment in atherosclerosis and arteriosclerosis associated diseases, coagulation survey of liver transplantations, cardiovascular surgery or pharmacological research. It has already provided highly promising results in preliminary studies on the relation between fibrinolysis and cardiovascular risk factors