A study on gas molecule-solid surface interaction satellite experiment feasibility Final report

Feasibility of conducting gas-solid surface interaction experiments on earth satellit

Advantages of the diffuser-augmented wind turbine

Performance optimization for a wind turbine is realized by using a shrouded diffuser to produce up to twice the power of unshrouded turbines of the same diameter. The diffuser converts the kinetic energy of the flow downstream of the rotor into a pressure rise and thus makes it possible for the rotor to capture airflow from a free stream tube area that is greater than that from the rotor itself. The flow velocity through the shrouded rotor is 20 to 60 percent greater than the free wind velocity as opposed to 67 percent less for the unshrouded case. The diffuser also makes it possible to accommodate very high wind speeds without the need of variable pitch in the rotor blades

Upper atmosphere interactions with spacecraft

Rarefied gas-surface interactions effects on satellite orbital position, attitude, and lifetime between 150 and 330 k

Water quality monitoring in the Hoover Creek watershed, 2004-2006

https://ir.uiowa.edu/igs_tis/1051/thumbnail.jp

What do gas-rich galaxies actually tell us about modified Newtonian dynamics?

It has recently been claimed that measurements of the baryonic Tully-Fisher relation (BTFR), a power-law relationship between the observed baryonic masses and outer rotation velocities of galaxies, support the predictions of modified Newtonian dynamics for the slope and scatter in the relation, while challenging the cold dark matter (CDM) paradigm. We investigate these claims, and find that: 1) the scatter in the data used to determine the BTFR is in conflict with observational uncertainties on the data; 2) these data do not make strong distinctions regarding the best-fit BTFR parameters; 3) the literature contains a wide variety of measurements of the BTFR, many of which are discrepant with the recent results; and 4) the claimed CDM "prediction" for the BTFR is a gross oversimplification of the complex galaxy-scale physics involved. We conclude that the BTFR is currently untrustworthy as a test of CDM.Comment: 5 pages, 2 figures; minor revisions to match published versio

Amplification of fall risk in Parkinson's disease: the influence of comorbidities

Journal ArticleLong term studies examining the progression of Parkinson's disease (PD) report the mean age of diagnosis to be in the mid sixties.' The diagnosis of PD typically .occurs after the presentation of motor deficits such as resting tremor, rigidity, hypokinesia, or postural instability. 2 Parkinson's disease in isolation results in worsening of motor deficits and progressive functional decline. While these problems are primarily the result of the degenerative process, underlying comorbidities may amplify or contribute to these deficits. In addition, given the typical age of onset, persons with PD will often present with a host of concurrent medical conditions (comorbidities). This is confirmed by research that estimated over 50% of Medicare beneficiaries had multiple comorbidities at the turn of the century.

Amplification of fall risk in Parkinsons disease: the influence of comorbidities

Journal ArticleLong term studies examining the progression of Parkinson's disease (PD) report the mean age of diagnosis to be in the mid sixties.' The diagnosis of PD typically .occurs after the presentation of motor deficits such as resting tremor, rigidity, hypokinesia, or postural instability. 2 Parkinson's disease in isolation results in worsening of motor deficits and progressive functional decline. While these problems are primarily the result of the degenerative process, underlying comorbidities may amplify or contribute to these deficits. In addition, given the typical age of onset, persons with PD will often present with a host of concurrent medical conditions (comorbidities). This is confirmed by research that estimated over 50% of Medicare beneficiaries had multiple comorbidities at the turn of the century.