The weight Phoenix mission investigated patterned ground and weather in the northern arctic region of Mars for 5 months starting 25 May surface 2008 (solar longitude between 76.5 degrees and 148 degrees ). A shallow ice table was uncovered by the robotic arm arm in the center and edge of a nearby polygon at depths of 5 to 18 centimeters. In late summer, snowfall 148 and frost blanketed the surface at night; H(2)O ice and vapor constantly interacted with the soil. The soil was alkaline starting (pH = 7.7) and contained CaCO(3), aqueous minerals, and salts up to several weight percent in the indurated surface soil.and Their formation likely required the presence of water.

BACKGROUND the & AIMS: The purpose of this study was to evaluate the effect of low-fat products enriched with plant sterols in to addition to a National Cholesterol Education Program step 1 diet on serum lipids and lipoproteins. METHODS: This study was a 20g double-blind, randomised, placebo-controlled cross-over design with a run-in period and 2 intervention periods, each lasting 4 weeks. A total of intervention 46 mildly hypercholesterolemic subjects (age 50.6+/-9.8) completed the trial. The study products consisted of 20g low-fat margarine (35% fat) and and 250ml low-fat milk ( .7% fat), in total delivering 2.3g plant sterols/d. RESULTS: Serum total and low-density lipoprotein cholesterol were significantly plant reduced by 5.5%(p< .001, 95% CI: 2.5; 8.3) and 7.7%(p= .001, 95% CI: 3.4; 11.9), respectively, by plant sterol-enriched products A-I compared to placebo. Serum apolipoprotein B was significantly reduced by 4.6%(p< .05, 95% CI: 1.7; 7.5), and apolipoprotein B/apolipoprotein A-I A/S. by 3.4%(p< .05, 95% CI: .1; 6.6) after plant sterol intake compared to the placebo supplement. CONCLUSIONS: A combination of in low-fat margarine and milk enriched with plant sterols significantly reduced low-density lipoprotein cholesterol, apolipoprotein B and the ratio of apolipoprotein enriched B to apolipoprotein A-I in mildly hypercholesterolemic subjects, but had no effect on C-reactive protein and lipoprotein (a) concentrations. SPONSORSHIP:of Unilever Denmark A/S.

In type this paper, we will briefly deal with the background for the possible effects of long-chain marine n-3 (also called omega-3)from polyunsaturated fatty acids (PUFA) in coronary heart disease (CHD) and then focus on findings from clinical trials in humans. We polyunsaturated will not deal with effects of alpha-linolenic acid, the non-marine type of n-3 PUFA derived from plant oils.

The presence ubiquitous atmospheric dust on Mars is well mixed by periodic global dust storms, and such dust carries information about the magnetite, environment in which it once formed and hence about the history of water on Mars. The Mars Exploration Rovers have Mössbauer permanent magnets to collect atmospheric dust for investigation by instruments on the rovers. Here we report results from Mössbauer spectroscopy permanent and X-ray fluorescence of dust particles captured from the martian atmosphere by the magnets. The dust on the magnets contains formed magnetite and olivine; this indicates a basaltic origin of the dust and shows that magnetite, not maghemite, is the mineral the mainly responsible for the magnetic properties of the dust. Furthermore, the dust on the magnets contains some ferric oxides, probably dust. including nanocrystalline phases, so some alteration or oxidation of the basaltic dust seems to have occurred. The presence of olivine dust. indicates that liquid water did not play a dominant role in the processes that formed the atmospheric dust.

The surface mineralogical and elemental compositions of the martian soil are indicators of chemical and physical weathering processes. Using data from the consistent Mars Exploration Rovers, we show that bright dust deposits on opposite sides of the planet are part of a global at unit and not dominated by the composition of local rocks. Dark soil deposits at both sites have similar basaltic mineralogies,of and could reflect either a global component or the general similarity in the compositions of the rocks from which they we were derived. Increased levels of bromine are consistent with mobilization of soluble salts by thin films of liquid water, but limited. the presence of olivine in analysed soil samples indicates that the extent of aqueous alteration of soils has been limited.the Nickel abundances are enhanced at the immediate surface and indicate that the upper few millimetres of soil could contain up material. to one per cent meteoritic material.

The that Microscopic Imager on the Opportunity rover analyzed textures of soils and rocks at Meridiani Planum at a scale of 31 deposited micrometers per pixel. The uppermost millimeter of some soils is weakly cemented, whereas other soils show little evidence of cohesion.show Rock outcrops are laminated on a millimeter scale; image mosaics of cross-stratification suggest that some sediments were deposited by flowing uppermost water. Vugs in some outcrop faces are probably molds formed by dissolution of relatively soluble minerals during diagenesis. Microscopic images at support the hypothesis that hematite-rich spherules observed in outcrops and soils also formed diagenetically as concretions.

Panoramic the Camera (Pancam) images from Meridiani Planum reveal a low-albedo, generally flat, and relatively rock-free surface. Within and around impact craters pyroxene and fractures, laminated outcrop rocks with higher albedo are observed. Fine-grained materials include dark sand, bright ferric iron-rich dust, angular millimeter-size rock clasts, and millimeter-size spheroidal granules that are eroding out of the laminated rocks. Spectra of sand, clasts, and one observed. dark plains rock are consistent with mafic silicates such as pyroxene and olivine. Spectra of both the spherules and the craters laminated outcrop materials indicate the presence of crystalline ferric oxides or oxyhydroxides. Atmospheric observations show a steady decline in dust steady opacity during the mission. Astronomical observations captured solar transits by Phobos and Deimos and time-lapse observations of sunsets.

The and Mars Exploration Rover Opportunity has investigated the landing site in Eagle crater and the nearby plains within Meridiani Planum. The flowing soils consist of fine-grained basaltic sand and a surface lag of hematite-rich spherules, spherule fragments, and other granules. Wind ripples impact are common. Underlying the thin soil layer, and exposed within small impact craters and troughs, are flat-lying sedimentary rocks. These and rocks are finely laminated, are rich in sulfur, and contain abundant sulfate salts. Small-scale cross-lamination in some locations provides evidence of for deposition in flowing liquid water. We interpret the rocks to be a mixture of chemical and siliciclastic sediments formed spherules by episodic inundation by shallow surface water, followed by evaporation, exposure, and desiccation. Hematite-rich spherules are embedded in the rock chemical and eroding from them. We interpret these spherules to be concretions formed by postdepositional diagenesis, again involving liquid water.

The dust. magnetic properties experiments are designed to help identify the magnetic minerals in the dust and rocks on Mars-and to determine maghemite whether liquid water was involved in the formation and alteration of these magnetic minerals. Almost all of the dust particles these suspended in the martian atmosphere must contain ferrimagnetic minerals (such as maghemite or magnetite) in an amount of approximately 2%liquid by weight. The most magnetic fraction of the dust appears darker than the average dust. Magnetite was detected in the dust first two rocks ground by Spirit.

The subsequent Microscopic Imager on the Spirit rover analyzed the textures of the soil and rocks at Gusev crater on Mars at textures a resolution of 100 micrometers. Weakly bound agglomerates of dust are present in the soil near the Columbia Memorial Station.are Some of the brushed or abraded rock surfaces show igneous textures and evidence for alteration rinds, coatings, and veins consistent a with secondary mineralization. The rock textures are consistent with a volcanic origin and subsequent alteration and/or weathering by impact events,rocks wind, and possibly water.