نتایج جستجو برای: number of aerated steps
تعداد نتایج: 21181829 فیلتر نتایج به سال:
one very decisive factor in students’ academic destiny is the result they get at final term examinations. because of its importance, both students and teachers are curiously anxious about them. as normally it is the case, these final term tests are prepared hurriedly in short time by teachers which result in students’ dissatisfaction, complaining on how the test was different from their expecta...
This study describes an in situ technique allows measuring thickness of biofilm growing at liquid-liquid interface. Two probes (100μm) were used to measure the electrical conductance, the first probe penetrates the first liquid (hydrophobic liquid) then the upper surface of the formed biofilm and the later penetrates the second liquid (salt solution), then the lower surface of the biofilm. The ...
An experimental investigation is conducted to calculate the shock standoff (SSO) distance in front of an acute-angled wedge. For this experimentation, simple water flows channel analysis is carried out. The flow velocity is varied from 13.2 cm/s to 25.5 cm/s increasing in steps of 1 cm/s. A velocity of 13.2 cm/s corresponds to Froude number 1.13 and velocity of 25.5 cm/s to Froude number 1.41. ...
Abstract. We consider a population of genotype sequences evolving on a rugged fitness landscape with many local fitness peaks. The population walks uphill until it encounters a local fitness maximum. We find that the statistical properties of the walk length depend on whether the underlying fitness distribution has a finite mean. If the mean is finite, all the walk length cumulants grow with th...
In 1944, Cairns proved the following theorem: given any two straight-line planar drawings of a triangulation with the same outer face, there exists a morph (i.e., a continuous transformation) between the two drawings so that the drawing remains straight-line planar at all times. Cairns’s original proof required exponentially many morphing steps. We prove that there is a morph that consists ofO(...
a novel and ultra low cost isfet electrode and measurement system was designed for isfet application and detection of hydronium, hydrazinium and potassium ions. also, a measuring setup containing appropriate circuits, suitable analyzer (advantech board), de noise reduction elements, cooling system and pc was used for controlling the isfet electrode and various characteristic measurements. the t...
the study reflected in this thesis aims at finding out relationships between critical thinking (ct), and the reading sections of tofel and ielts tests. the study tries to find any relationships between the ct ability of students and their performance on reading tests of tofel and academic ielts. however, no research has ever been conducted to investigate the relationship between ct and the read...
The 6-min walk test (6MWT) has been used to examine subjective dyspnea, predict mortality and measure clinical outcomes in studies of patients with chronic pulmonary or heart disease. Although the 6MWT is useful to assess the general ability to perform daily physical activity, it is difficult to evaluate time-dependent responses. To improve the 6MWT, we devised a new index, which is the number ...
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