Fluid injection device for high-pressure systems

Screw activated device, consisting of a compressor, shielded replaceable ampules, a multiple-element rubber gland, and a specially constructed fluid line fitting, injects measured amounts of fluids into a pressurized system. It is sturdy and easily manipulated

Space-suit carbon dioxide absorption system: A concept

Partial pressure of carbon dioxide within a space suit is maintained at safe levels by regenerating carbon dioxide with potassium hydroxide solution on board spacecraft or by portable units

Stabilizing the Dilaton in Superstring Cosmology

We address the important issue of stabilizing the dilaton in the context of superstring cosmology. Scalar potentials which arise out of gaugino condensates in string models are generally exponential in nature. In a cosmological setting this allows for the existence of quasi scaling solutions, in which the energy density of the scalar field can, for a period, become a fixed fraction of the background density, due to the friction of the background expansion. Eventually the field can be trapped in the minimum of its potential as it leaves the scaling regime. We investigate this possibility in various gaugino condensation models and show that stable solutions for the dilaton are far more common than one would have naively thought.Comment: 13 pages, LaTex, uses psfig.sty with 3 figure

Constraints on string networks with junctions

We consider the constraints on string networks with junctions in which the strings may all be different, as may be found for example in a network of $(p,q)$ cosmic superstrings. We concentrate on three aspects of junction dynamics. First we consider the propagation of small amplitude waves across a static three-string junction. Then, generalizing our earlier work, we determine the kinematic constraints on two colliding strings with different tensions. As before, the important conclusion is that strings do not always reconnect with a third string; they can pass straight through one another (or in the case of non-abelian strings become stuck in an X configuration), the constraint depending on the angle at which the strings meet, on their relative velocity, and on the ratios of the string tensions. For example, if the two colliding strings have equal tensions, then for ultra-relativistic initial velocities they pass through one another. However, if their tensions are sufficiently different they can reconnect. Finally, we consider the global properties of junctions and strings in a network. Assuming that, in a network, the incoming waves at a junction are independently randomly distributed, we determine the r.m.s. velocities of strings and calculate the average speed at which a junction moves along each of the three strings from which it is formed. Our findings suggest that junction dynamics may be such as to preferentially remove the heavy strings from the network leaving a network of predominantly light strings. Furthermore the r.m.s. velocity of strings in a network with junctions is smaller than 1/\sqrt{2}, the result for conventional Nambu-Goto strings without junctions in Minkowski spacetime.Comment: 12 pages, 6 figures. Version to appear in PRD. (2 new references and slightly extended discussion in section VII

Studies related to the design of a magnetic suspension and balance system Interim technical report, Dec. 1964 - Jan. 1966

Magnetic suspension and balance system for use in hypersonic flow apparatu

What Is Hellenism?

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Public Relations Goal—Telling How Agricultural Progress Benefits All

It may be trite to list the production marvels in agriculture for the various publics with whom we work through universities, agri-business firms, government agencies, and the like

Telemedicine Scams

Telemedicine emerged as a lifeline during the COVID-10 pandemic. Although the technology existed long before the pandemic, its use was limited due to strict government regulations that limited reimbursement for telemedicine visits. In response to the pandemic, the Government waiver many of its restrictions for the duration of the Public Health Emergency. These changes fueled the growth of telemedicine. The problem, however, is that telemedicine makes it easier to conduct fraud on a larger scale because without in-person visits, medical providers can reach many more beneficiaries in a short period of time. Thus, the size and scale of typical health care fraud schemes, such as sending medically unnecessary durable medical equipment, is magnified. This type of fraud has been on the rise since 2016, and, with the relaxed rules for telemedicine reimbursement during the pandemic, there is a serious concern that there will be a sharp increase in telemedicine fraud. This Article examines the fraudulent practices in the telemedicine industry and the conditions that permit them to flourish. This Article critically assesses the changes to telemedicine coverage and their relationship to fraud. It examines the fraudulent practices through the lens of the fraud triangle to determine why telemedicine fraud occurs. After assessing the cause of telemedicine fraud, this Article argues that there is no need for additional criminal statutes to address telemedicine fraud. As the typical telemedicine scam involves the payment of kickbacks and bulling for medically unnecessary treatment and services, the existing fraud laws such as the Anti-Kickback statute and the False Claims Act are sufficiently capacious to address the criminality involved in these cases. This Article also argues that in lieu of the additional criminal statutes, the Government should focus on additional measures to prevent or detect telemedicine fraud because preventative measures are the best way to safeguard the integrity of federal health care programs

Transition probabilities in OH A 2 sigma + - X 2 pi i: Bands with v prime = 0 and 1, v double prime = 0 to 4

Experimental results for relative vibrational band transition probabilities for v prime = 0 and 1, and v double prime = 0 to 4 in the A-X electronic system of OH are presented. The measurements, part of a larger set involving v prime = 0 to 4 and v double prime = 0 to 6, were made using spectrally dispersed laser-induced fluorescence (LIF) in the burnt gases of a flame. These Einstein coefficients will be useful in dynamics experiments for quantitative LIF determinations of OH radical concentrations in high v double prime

An information approach to the dynamics in farm income: implications for farmland markets

The valuation of farmland is a perennial issue for agricultural policy, given its importance in the farm investment portfolio. Despite the significance of farmland values to farmer wealth, prediction remains a difficult task. This study develops a dynamic information measure to examine the informational content of farmland values and farm income in explaining the distribution of farmland values over time