Adapting Disease Prevention Protocols for Human Spaceflight During COVID-19.

The National Aeronautics and Space Administration (NASA) Flight Crew Health Stabilization Program (HSP) was historically implemented to minimize infectious disease transmission to astronauts in the immediate prelaunch period. The first ever commercial application and adaptation of the NASA HSP was implemented during the Crew Demo-2 mission in the time of the Coronavirus disease 2019 (COVID-19) pandemic. This article details and discusses the first commercial implementation and adaptation of the HSP prior to the Crew Demo-2 launch.

Evolution of chemical species during electrodeposition of uranium for alpha spectrometry by the Hallstadius method.

The morphology and composition of uranium alpha sources with co-deposited platinum have been investigated by scanning electron microscopy (SEM) with energy dispersive X-ray fluorescence analysis (EDX), X-ray photoelectron spectroscopy (XPS) and X-ray absorption fine structure (XAFS) studies. Combined SEM and EDX measurements reveal the effect of porous platinum on the morphology of the sources which in turn affects their alpha-spectral resolution. The XPS analysis suggests that the presence of platinum initially increases the concentration of hydroxyl species in the deposits, which then act as centres for subsequent preferential uranium precipitation.

Risk factors for bulk milk somatic cell counts and total bacterial counts in smallholder dairy farms in the 10th region of Chile.

We investigated the principal management factors that influenced bulk milk somatic cell count (BMSCC) and total bacterial count (TBC) of smallholder dairy farms in the 10th region of Chile. One hundred and fifty smallholder milk producers were selected randomly from 42 milk collection centres (MCCs). In April and May of 2002, all farms were visited and a detailed interview questionnaire on dairy-cow management related to milk quality was conducted.

Epidemiological aspects of oral and pharyngeal cancers in the Basque Country.

Oral and pharyngeal cancer is an entity constituted by a group of tumours that arise in several heterogeneous anatomical sites, and for this reason it is difficult to establish comparisons. The aim of the study was to describe the characteristics of oropharyngeal cancer in the Basque Autonomous Community (BAC), to learn the incidence rate and to establish comparisons. Data of cases are from the Basque Country Cancer Registry for the period 1986-1994, and the methodology used is descriptive.

Anti-tetanus toxin titers in sera of the women who gave births in 1985 and 1989 in Gipuzkoa (Basque Country, Spain).

14.9% (208/1400) of the women who gave births in 1985 and 1989 in Gipuzkoa (Basque Country, Spain), was considered to have 'protective' levels (> or = 0.01 IU/ml) of tetanus antitoxin as measured by the passive haemagglutination test.