Electromagnetic Meissner effect launcher

An electromagnetic projectile launcher provides acceleration of a superconducting projectile through the diamagnetic repulsion of the superconducting projectile. A superconducting layer is provided aft of the projectile, either directly on the projectile or on a platform upon which the projectile is carried, and a traveling magnetic field is caused to propagate along a magnetic field drive coil in which the projectile is disposed. The resulting diamagnetic repulsion between the superconducting projectile and the traveling magnetic field causes the projectile to be propelled along the coil. In one embodiment, a segmented drive coil is used to generate the traveling magnetic field

Piezoelectrostatic generator

A piezoelectrostatic generator includes a plurality of elongated piezoelectric elements having first and second ends, with the first ends fixedly mounted in a cylindrical housing and the second extending radially inwardly toward an axis. A shaft movable along the axis is connected to the inner ends of the elements to produce bending forces in piezoelectric strips within the elements. Each element includes a pair of strips mounted in surface contact and in electrical series to produce a potential upon bending. Electrodes spaced from the strips by a solid dielectric material act as capacitor plates to collect the potential charge

Can a profession exist without research?

Radiography combines science, technology and patient care to provide an essential role in medical diagnosis and treatment. The term ‘profession’ has existed in the Oxford English Dictionary from the 15th century and argues that a profession is an occupation where professional knowledge is applied by someone who has undertaken prolonged training and obtained a formal qualification (Oxford English Dictionary Online; 2007). For most of history, professions have based their practices on expertise derived from experience passed down in the form of tradition. Even in health care, many practices have still not been justified by evidence and as such there are areas of uncertainty.peer-reviewe

Development of the all-welded common bulkhead fifth monthly progress report, 1 - 30 nov. 1964

Comparison of tungsten and molybdenum inert gas welded joint

The effect of spatial position of calorie information on choice, consumption and attention. ESRI WP615, February 2019

We report a “lab-in-the-field” experiment designed to test the impact of posting calories on menus. The study adds substantially to previous work by testing different spatial arrangements of price and calorie information. Choices were real, not hypothetical, and participants were unaware that their lunch choice was part of a study, even though their eye-movements were being tracked. Participants exposed to calorie information ordered 93 fewer calories (11%) relative to a control group. The impact was strongest when calorie information was presented on menus just to the right of the price, in an equivalent font. The difference in number of calories consumed was greater still. These effects were mediated by knowledge of the amount of calories in the meal, implying that calorie posting led to more informed decision making. There was no impact on enjoyment of the meal. Eye-tracking data suggested that this arrangement altered the decision process such that greater decision weight was given to calorie content

Gravitinos, the Lithium problem, and DM production: Is there a corresponding neutrino physics linkage?

Studies are cited indicating that gravitino production acts as a natural upper bound to Li6 and Li7 levels, based on what happens after hadronic decay of relic 1 TeV into 100 GeV gravitinos at 1000 s. after the Big Bang. The produced gravitinos contribute a large fraction of required dark matter density. Whether or not gravitinos can be linked to neutrino production depends on which model of dark matter (DM) is assumed or used. A model presented by the author in 2008 links DM of about 100 GeV -- based on a phenomenological Lagrangian creating different Neutrino masses without SUSY -- with a dark matter candidate of about 100 GeV. This may tie in 100 GeV gravitinos with neutrino physics.Comment: 2 pages, no figures. New article in a sequel of DM applications articles. Conference entry to Rencontres De Moriond, for the Cosmology meeting, February 2009, to be published late 2009 by the Gioi company of Vietna

Relic High Frequency Gravitational waves from the Big Bang, and How to Detect Them

We show conditions for HFGW detection, employing an entropy concept written up by Jack Ng, and Steinhard's proceedure for reconstructing tensorial representations for relic HFGW from the onset of the big bang. The issue of the reality of gravitons as a measurable physical object which was raised by Rothman in 2006 is indirectly answered via a proceedure obtained from Weinberg's 1972 book on gravitation, and all the methodologies so obtained are referenced with respect to engineering specifications of the Li-Baker HFGW detector. In addition, the document also refers to entanglement entropy, and its possible aid in refining measurement predictions. Finally, commentary about HFGW and relic neutrino physics data sets is included, with regards to inflationary model candidatesComment: 15 pages, 1 table, 1 figure. Covers two AIP conference proceeding entries. Pages 1-9 correspond to one ias-spes Huntsville, Alabama February 2009 conference paper on the formalism of HFGW analysis, and pages 9-13 correspond to Neutrino physics-HFGW data set comparison, in terms of different inflationary potential candidate

Synchronizing Sequencing Software to a Live Drummer

Copyright 2013 Massachusetts Institute of Technology. MIT allows authors to archive published versions of their articles after an embargo period. The article is available at

Access to Water in the Slums of the Developing World

The text and data in this publication may be reproduced as long as the source is cited. Reproductions for commercial purposes are forbiddenThe discussion reveals the failure of public policies as well as markets to provide satisfactory solutions to the problems of access to a safe, affordable and continuous water supply. In many countries, especially those in Sub-Saharan Africa, access to safe water through household connections declined in the 1990s. Achievements in access rates in many Asian and African economies are the due to widespread use of public water points such as public standpipes and kiosks. These sources are important, but doubtless the quality of access to water with these facilities is unsatisfactory since they involve greater effort by households, involving queuing, carrying water and lacking continuous access. A substantial proportion of urban dwellers in developing countries, especially in unplanned settlements, rely on a wide range of small-scale providers whose services are vital in the absence of alternatives. Their services, however, are often inferior to those provided by the formal network. Invariably, the water charges of alternative sources are higher than those for supply from the public network.Final Published versio