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As anyone who has ever unwound a string of holiday lights or detangled a lock of snarled hair knows, undoing a knot of fibers takes a lot longer than tangling it up in the first place.
Micro-nano-engineered nitrogenous bone biochar developed with a ball-milling technique for high-efficiency removal of aquatic Cd(II), Cu(II) and Pb(II)
Micro-nano-engineered nitrogenous bone biochar
2023/6/5
A cost-effective and eco-friendly engineering method to improve biochar’s physicochemical and sorption performance is critical in various environmental applications. In this study, micro-nano-engineer...
Computer Model Is ‘Crystal Ball’ for E. Coli Bacteria
Computer Model Crystal Ball E. Coli Bacteria
2016/11/4
It’s difficult to make predictions, especially about the future, and even more so when they involve the reactions of living cells — huge numbers of genes, proteins and enzymes, embedded in complex pat...
Accuracy and Reliability of a New Tennis Ball Machine
Technology tennis testing training ball-machine
2016/7/7
The aim was to evaluate the reliability of a newly-developed ball machine named 'Hightof', on the field and to assess its accuracy. The experiment was conducted in the collaboration of the 'Hawk-Eye' ...
Comparison of Ball-And-Racket Impact Force in Two-Handed Backhand Stroke Stances for Different-Skill-Level Tennis Players
Biomechanics upper extremity kinetic acceleration open stance square stance
2016/7/7
This study compared the kinetic roles of the upper extremities in racket impact force generation between the open stance (OS) and square stance (SS) for tennis players with different skill levels in t...
Professor,Arnetha F. Ball,School of Education at Stanford University（图）
School of Education at Stanford University Professor Globalization Inner-city Youth International Comparative Education
2016/5/25
Arnetha F. Ball,Professor,School of Education at Stanford University.She is Research Interests:Access and Equity,Curriculum and Instruction,Diversity,Globalization,Inner-city Youth,International Compa...
Time-Memory Trade-Off for Lattice Enumeration in a Ball
Lattice Enumeration public-key cryptography
2016/3/1
Enumeration algorithms in lattices are a well-known technique for solving the Short Vector Problem (SVP) and improving blockwise lattice reduction algorithms. Here, we propose a new algorithm for enum...
The Future of Medicine Could Be Found In This Tiny Crystal Ball
Future of Medicine Tiny Crystal Ball
2016/2/23
A Drexel University materials scientist has discovered a way to grow a crystal ball in a lab. Not the kind that soothsayers use to predict the future, but a microscopic version that could be used to e...
Professor Gregory Ball，Department of Psychology at University of Maryland（图）
Professor Gregory Ball Department of Psychology at University of Maryland
2015/9/25
Dr. Ball joined the University of Maryland in 2014 as Professor and Dean of the College of Behavioral and Social Science.
Dr. Ball was previously Vice Dean for Science and Research Infrastructure in ...
The first detection of leafhopper Scaphoideus titanus Ball (Hemiptera, Cicadellidae) in Slovakia
American grapevine leafhopper occurrence phenology Flavescence doree
2015/7/28
Scaphoideus titanus Ball, the main vector of Flavescence dorée phytoplasma, was monitored in Slovakia during 2013 and 2014. The species was present in the vineyards of eastern Slovakia but it was rare...
Computational Sports Aerodynamics of a Moving Sphere:Simulating a Ping Pong Ball in Free Flight
Computational Sports Aerodynamics Moving Sphere Simulating Ping Pong Ball Free Flight
2015/7/3
Fluid dynamics associated with many sports involving spheric shaped equipments such as tennis, golf and ping pong balls tends to be very unsteady and viscous, with occasionally transitional behaviors....
Ball Machine Usage in Tennis: Movement Initiation and Swing Timing While Returning Balls from a Ball Machine and from a Real Server
Tennis ball machine server return stroke movement initiation
2015/5/22
Practicing with the use of a ball machine could handicap a player compared to playing against an actual opponent. Recent studies have shown some differences in swing timing and movement coordination, ...
Effects of Stabilization Exercise Using a Ball on Mutifidus Cross-Sectional Area in Patients with Chronic Low Back Pain
Stabilization exercise ball multifidus cross-sectional area low back pain
2015/5/18
The purpose of this study was to compare the effects of lumbar stabilization exercises using balls to the effects of general lumbar stabilization exercises with respect to changes in the cross section...
Effects of a 12 Week SAQ Training Programme on Agility with and without the Ball among Young Soccer Players
speed specific agility change of direction SAQ
2015/5/14
The purpose of this study was to determine the effects of a 12 week conditioning programme involving speed, agility and quickness (SAQ) training and its effect on agility performance in young soccer p...
Influence Of Opposition On Ball Velocity In The Handball Jump Throw
Team handball jump throw ball velocity defence
2015/5/7
The purpose of the present study was to investigate the influence of different degrees of opposition on ball velocity in the jump throw in elite, amateur and adolescent team handball players. Thus, on...