Results 31 to 40 of about 3,494,207 (343)
Specific characteristics of speed skating
Medicine & Science in Sports & Exercise, 1987 Fourteen well-trained speed skaters performed all-out exercise tests during ice speed skating, low walking (walking-like movement in skating position), and dry skating (side to side deep sitting push-offs). These dry land training activities, widely used by speed skaters during the summer period, are compared to speed skating in relation to the concept
R W, de Boer +6 more
openaire +3 more sources
Two-speed cell specification [PDF]
The Journal of Cell Biology, 2006 Neuron subtypes are specified through diversity: each subtype gets its own transcription factor. But in the lateral glia of Drosophila, specification of all glial cell types is controlled by a single fate-determining gene called Glide/Gcm (gcm). How can just one gene make many glial cell types?
openaire +1 more source
Flow in a Low Specific Speed Centrifugal Pump Using PIV
Advances in Mechanical Engineering, 2013 The interflow plays important roles in centrifugal pump design. In order to study the effect of rotation and z -axis on internal flow, two-dimensional particle image velocimetry (PIV) measurements have been performed to measure the steady velocity field ...
Cui Dai, Liang Dong
doaj +1 more source
Performance of Very Low Specific Speed Centrifugal Pumps with Circular Casing
Journal of Fluid Science and Technology, 2007 Efficiency of a centrifugal pump is known to drop rapidly with a decrease of specific speed ns in the range of ns ≤ 100 [m,m3/min,min-1]. However, below ns = 60, the pump efficiency is not yet clear, and the spiral angle of a volute casing becomes too
Shusaku KAGAWA +3 more
doaj +1 more source
Validity of a squash-specific test of change-of-direction speed [PDF]
, 2016 Purpose: We examined the validity and reproducibility of a squash-specific test designed to assess change-of-direction speed. Methods: 10 male squash and 10 male association-football and rugby-union players completed the Illinois agility run (IAR) and a ...
Leedale-Brown, Damon +2 more
core +1 more source
Frontiers in Psychology, 2021 There is a growing consensus that math anxiety highly correlates with trait anxiety and that the emotional component elicited by math anxiety affects math performance. Yet few studies have examined the impact of “specific math anxiety” (high math anxiety
Jiuqing Tang +7 more
doaj +1 more source
Vertical wind profile characterization and identification of patterns based on a shape clustering algorithm [PDF]
, 2019 Wind power plants are becoming a generally accepted resource in the generation mix of many utilities. At the same time, the size and the power rating of individual wind turbines have increased considerably.
Bueso Sánchez, María del Carmen +4 more
core +2 more sources
IEEE Access, 2023 Aiming at the problems of low working efficiency and high energy loss in the operation of centrifugal pump, an intelligent algorithm for centrifugal pump design was proposed.
Yuqin Wang, Luxiang Zhou, Shimin Zheng
doaj +1 more source
Journal of Mechanical Engineering and SciencesIt is a well-known fact that the disk friction phenomena due to axial clearance has a significant impact on centrifugal pumps performance. Enhancing the efficiency of centrifugal pumps is crucial, as these pumps are widely used in industries and ...
Satish Dokiparti +2 more
doaj +1 more source
Program for calculating total-efficiency of specific-speed characteristics of centrifugal compressors [PDF]
, 1973 Program uses one-dimensional mean streamline analysis conducted at fixed stagnation conditions. Seven specific losses are calculated for each set of compressors geometric variables and inlet velocity diagram characteristics studied.
Galvas, M. R.
core +1 more source