Table 1. Chemical composition of the Martian atmosphere. Spacecraft data are in black, ground-based spectroscopy is in red, spectroscopy from Earthorbiting observatories in blue. Species Mixing ratio Instrument CO2 0.955 GS N2 0.027 Viking/MS Ar 0.016 Viking/MS Ne 2.5 ppm Viking/MS Kr 0.3 ppm Viking/MS Xe 80 ppb Viking/MS H 2.7×10 cm Mariner/UVS O 0.01-0.02 Mariner/UVS O2 (1.2−2)×10 FPI CO 8×10...

Quantification of particulate (w0.45 mm) and dissolved (v0.45 mm) trace elements in seawater is imperative for understanding geochemical cycling in the marine environment. Suspended particulate trace element concentrations are typically v10% of total element concentrations in seawater. To overcome analytical difficulties associated with low analyte concentrations, it is common to filter large v...

We wanted to determine whether the production of endogenous nitric oxide (NO) is affected by cigarette smoking and various pathological conditions. Endogenously produced NO was measured by chemiluminescence in the exhaled air of 81 healthy volunteers (21 nonsmoking females (NSF), 12 smoking females (SF), 24 nonsmoking males (NSM) and 24 smoking males (SM)) and 38 patients (10 with hypertension,...

A random-mating population was used to study the genetic interrelationship between phytate P (PPB), Ca (CaB), N (NB), and energy bioavailability (EB), BW at 4 wk of age, relative growth (RG), and feed conversion ratio (FCR). Heritability estimates for PPB, CaB, NB, and EB were 0.09, 0.13, 0.16, and 0.10, respectively, and those of BW, RG, and FCR were 0.66, 0.15, and 0.10, respectively. Genetic...

Individual levels of 33 PCBs (#28, #52, #47/48, #74, #66, #101, #99/113, #110, #118, #114/122, #105, #153, #138, #128/167, #156, #157, # 178, #182/187, #183, #174, #177, #172/192, #180/193, #170/190, #189, #202, # 194, #199, #196/203, #195, # 208, #207, #206), HCB, oxychlordane, p,p’-DDE and PBDE #47 were determined in 141 plasma samples (0.5-3 ml) from Swedish females with documented high cons...