Blast foam darts at targets up to ten paces away! Continue the fun with experiments that harness the power of air. It hits the bull's-eye for the whole family!
From the Coke and Mentos fountain makers who found initial fame via Maker Faire and YouTube (more than 150 million views!) comes this collection of DIY science projects guaranteed to inspire a love of experimentation. Fritz Grobe and Stephen Voltz, also known as EepyBird, share their favorite projects: a giant air vortex cannon, a leaf blower hovercraft, a paper airplane that will fly forever, and many more. Each experiment features instructions that will take users from amateur to showman level—there's something here for all skill levels—alongside illustrations, photographs, and carefully explained science. How to Build a Hovercraft is guaranteed to engage curious minds and create brag-worthy results!
An understanding ofthe properties and the handling characteristics of liquids and gases has long been regarded as an essential requirement for most practising engineers. It is therefore not surprising that, over the years, there has been a regular appearance of books dealing with the fundamentals of fluid mechanics, fluid flow, hydraulics and related topics. What is surprising is that there has been no parallel development of the related discipline of Bulk Solids Handling, despite its increasing importance in modern industry across the world. It is only very recently that a structured approach to the teaching, and learning, of the subject has begun to evolve. A reason for the slow emergence of Bulk Solids Handling as an accepted topic of study in academic courses on mechanical, agricultural, chemical, mining and civil engineering is perhaps that the practice is so often taken for granted. Certainly the variety of materials being handled in bulk is almost endless, ranging in size from fine dust to rocks, in value from refuse to gold, and in temperature from deep-frozen peas to near-molten metal.
"The series of books entitled "The machine gun" was begun with the belief that the next best thing to actual knowledge is knowing where to find it. The research summarized within the covers of these volumes has been compiled by the Bureau of Ordinance, Department of the Navy, in order to place in the hands of those rightfully interested in the art of automatic weapon design, the world's recorded progress in this field of endeavor."--Vol. II, p. v.
The neurodegenerative disorders such as Parkinson’s disease (PD) or Alzheimer’s disease (AD) are the most common forms of dementia and no pharmacological treatments are to date available for these diseases. Indeed, the only used drugs are symptomatic and no useful to block the progression of the diseases. The lack of a therapeutic approach is also due to a lack of an early diagnosis. This Research Topic describes a new target that is involved in the firs step of these disorders and that can be useful for the treatment and the diagnosis of such pathologies: the cannabinoid receptor subtype 2 or CB2R. Indeed, CB2R is overexpressed in reactive microglia and activated astrocytes during neuroinflammation and thus their detection by PET probes can be an easily strategy for an early diagnosis of neurodegeneration. Moreover, CB2 agonists and inverse agonists displayed neuroprotective effects and they so can be candidated as new therapeutich drugs for the treatment of these pathologies. Therefore, the aim of this Research Topic is to show the great potential of CB2R ligands for the development of new tools/drugs for both the therapy and the diagnosis of neurodegeneration.
Futures in Mechanics of Structures and Materials is a collection of peer-reviewed papers presented at the 20th Australasian Conference on the Mechanics of Structures and Materials (ACMSM20, University of Southern Queensland, Toowoomba, Queensland, Australia, 2 - 5 December 2008) by academics, researchers and practicing engineers mainly from Austral