Oil spills and natural oil seeps are sources of petrogenic hydrocarbons in soils sediments. To determine the source hydrocarbon contamination environment geochemical signature contaminant needs to be characterised. Here, we present biomarker other molecular marker diagnostic ratios Alberta Sands using gas chromatography-mass spectrometry characterise deposits detect their incorporation surficia...

Globodera solanacearum females were found to have less than 0.01% of dry wt as sterols. Seven sterols were detected in the nematode, with stanols (campestanol and stigmastanol) making tip more than 50% of the total sterols present. Lipid amounted to 29.4% of the dry weight of the nematode. Triglyceride, free fatty acid, and phospholipid classes were composed predominantly of 20:4, 20:1, and 18:...

We provide a general class of tests for correlation in time series, spatial, spatio-temporal and cross-sectional data. We motivate our focus by reviewing how computational and theoretical di¢ culties of point estimation mount as one moves from regularly-spaced time series data, through forms of irregular spacing, and to spatial data of various kinds. A broad class of computationally simple test...

There is an error in the units for fecal LPS shown in Fig 6A. The correct units are EU per microgram (EU/ μg) feces. Here we provide a corrected Fig 6. Additionally, the text in the Results section accompanying Fig 6 incorrectly states that rapamycin treatment decreased plasmatic LPS level in aged rats. This text should be replaced with the following corrected text: "Fecal and plasmatic LPS con...

Photochemical energy conversion during oxygenic photosynthesis is performed by membrane-embedded chlorophyll-binding protein complexes. The biogenesis and maintenance of these complexes requires auxiliary factors that optimize the assembly process protect nascent from photodamage. In cyanobacteria, several lipoproteins contribute to function photosystem II (PSII) complex. They include CyanoP, C...

Experimental work involving artificial maturation of modern sediments was carried out to determine if diamondoids can be generated from biosynthetic precursors abundant in modern sediments. Mineral catalysts of distinctive properties, including montmorillonite K10, acidic aluminosilicate and CaCO3 were used in the hydrous pyrolysis of organic-rich modern sediments to examine which type of catal...

Cuticular hydrocarbons from the ponerine ant Ectatomma ruidum Roger and a highly integrated eucharitid myrmecophile, Kapala sulcifacies (Cameron), associated with it, have been characterized. Ninety hydrocarbons were identiÞed from the ant, 55 hydrocarbons from the female wasp and 54 hydrocarbons from the male wasp. The wasps and ants share 40 hydrocarbons. These shared 40 hydrocarbons represen...

In a feeding trial with sheep, four animals each were fed one of the three roughages (perennial ryegrass (PR), meadow fescue (MF) and red clover (RC)) or one of the four different mixtures (g/day 250 : 250 : 250, 375 : 75 : 300, 525 : 187.5 : 37.5 and 75 : 525 : 150, respectively) of those three roughages, both with and without the inclusion of 100 g of beeswax-labelled barley. Further, four sh...