Applications Technology Satellite and Communications Technology Satellite user experiments for 1967-1980 reference book. Volume 4: Abstracts

The important user experiments conducted during the fourteen year period from 1966 to 1980 are summarized. A description of each of the satellites and a brief summary of each user experiment is presented. A cross index of user experiments sorted by various parameters and a listing of keywords versus experiment number is included. The experiments are grouped by type of service offered; for example, education, health services, and data transmission. A bibliography of reports by accession number and by author is also presented. User viewpoints of the systems are presented

Applications Technology Satellite and Communications Technology Satellite user experiments for 1967 - 1980 reference book, volume 1

A description of each of the satellites is given and a brief summary of each user experiment is presented. A Cross Index of User Experiments sorted by various parameters and a listing of keywords versus Experiment Number are presented

Compendium of Applications Technology Satellite user experiments

The achievements of the user experiments performed with ATS satellites from 1967 to 1973 are summarized. Included are fixed and mobile point to point communications experiments involving voice, teletype and facsimile transmissions. Particular emphasis is given to the Alaska and Hawaii satellite communications experiments. The use of the ATS satellites for ranging and position fixing of ships and aircraft is also covered. The structure and operating characteristics of the various ATS satellite are briefly described

Sublingual immunotherapy for the treatment of allergies

The treatment of allergies often involves pharmacological therapy and recommendations by healthcare workers that the allergen should be avoided. Allergen-specific immunotherapy has emerged as an alternative to effectively decrease the immunoglobulin (Ig) E:IgG4 ratio. Two routes of administration are described, namely subcutaneous immunotherapy, which has always been considered to be the gold standard of treatment, and sublingual immunotherapy, which has recently been shown to have fewer systemic side-effects and improved compliance by patients.Keywords: AIT, allergic disease, allergen-specific immunotherapy, allergic rhinitis, clinical efficacy, SCIT, SLIT, subcutaneous immunotherapy, sublingual immunotherap

Not Too Separate or Unequal: Marriage Penalty Relief after \u3ci\u3eObergefell\u3c/i\u3e

Joint tax returns have generated controversy for many years. Married couples with the same joint income pay the same tax under our current system regardless of the earnings distribution between the spouses. This approach primarily rests on the idea that married couples share resources and operate as a single economic unit. Critics typically challenge this assumption and lament how marriage might significantly change a couple’s taxes. Depending on their earnings breakdown, a couple’s taxes could be reduced (a marital bonus for uneven-earners) or increased (a marital penalty for even-earners). These possibilities exist because the joint brackets are typically larger–but not twice as large–as the unmarried brackets. Recent Supreme Court decisions about same-sex marriage revitalize this debate since many same-sex couples face the marriage penalty. In response, some recent commentators propose the elimination of joint returns. However, such elimination faces serious roadblocks, including political concerns and tension with marriage’s collaborative character. While higher joint bracket allowances likewise would provide penalty relief, this would increase both marital bonuses and the associated revenue loss. We propose instead a unique solution to the current standstill: an option for married couples to calculate their tax on their separate earnings. These separate amounts would be combined on a joint return. The new separate brackets would be more than half the joint allowance but less than the singles cap. This range permits maximum flexibility to balance revenue concerns with other important values. Further, our approach would provide significant penalty relief without any undesired impact on bonuses. It also would maintain our deeply ingrained joint return system. Finally, we demonstrate the superiority of our proposal over other suggested compromises

Atopic Dermatitis

The aetiology of atopic dermatitis is multi-faceted and affects our first line host defence, the skin. Atopic dermatitis has a significant influence on a patient’s social and occupational functioning and can have long-lasting effects. The signs and symptoms of AD includes pruritus, erythema, fissuring, and lichenification – these are reduced by the use of moisturizing agents.  Guidelines on how to manage atopic dermatitis aims to improve symptoms and achieve long-term disease control. Patient education remains as important as other treatment strategies and the pharmacist plays an integral role in educating patients on the management of their condition and adherence to therapy.Keywords: Atopic dermatitis, pruritus, filaggrin, FLG gene, microbiome, Th2 cell

Aperture Valve for the Mars Organic Molecule Analyzer (MOMA)

NASA's participation in the multi-nation ExoMars 2018 Rover mission includes a critical astrobiology Mass Spectrometer Instrument on the Rover called the Mars Organic Molecule Analyzer (MOMA). The Aperture Valve is a critical electromechanical valve used by the Mass Spectrometer to facilitate the transfer of ions from Martian soil to the Mass Spectrometer for analysis. The MOMA Aperture Valve development program will be discussed in terms of the Initial valve design and subsequent improvements that resulted from prototype testing. The Initial Aperture Valve concept seemed promising, based on calculations and perceived merits. However, performance results of this design were disappointing, due to delamination of TiN and DLC coatings applied to the Titanium base metals, causing debris from the coatings to seize the valve. While peer reviews and design trade studies are important forums to vet a concept design, results from testing should not be underestimated. Despite the lack of development progress to meet requirements, valuable information from weakness discovered in the Initial Valve design was used to develop a second, more robust Aperture valve. Based on a check-ball design, the ETU /flight valve design resulted in significantly less surface area to create the seal. Moreover, PVD coatings were eliminated in favor of hardened, nonmagnetic corrosion resistant alloys. Test results were impressive, with the valve achieving five orders of magnitude better sealing leak rate over end of life requirements. Cycle life was equally impressive, achieving 280,000 cycles without failure