We developed an algorithm to improve richness assessment based on paleoecological series, considering sample features such as their temporal resolutions or their volumes. Our new method can be applied to both high- and low-count size proxies, i.e. pollen and plant macroremain records, respectively. While pollen generally abounds in sediments, plant macroremains are generally rare, thus leading ...

Abstract Reconstructing river planform is crucial to understanding ancient fluvial systems on Earth and other planets. Paleo-planform typically interpreted from qualitative facies interpretations of strata, but these can be inconsistent with quantitative approaches. We tested three well-known hydraulic predictors in Cretaceous strata (in Utah, USA) where there a facies-derived consensus paleo-p...

Abstract Based on natural gas compositions, carbon isotope ratios, and geological analysis, the genesis origin of gases in Lower Paleozoic Ordos basin are discussed. Due to differences distribution genesis, were divided into five types, namely western margin gas, weathered crust pre-salt Ordovician deep Cambrian gas. The results show that δ 13 C 1 2 range from −35.6 −38.9‰ −27.2 −35.9‰, respect...

Abstract The present study aims to investigate the origin, type, thermal maturity and hydrocarbon generation potential of organic matter paleo-depositional environment Early Paleocene (Danian) Hangu Formation outcropped in Kala-Chitta Range Northwest Pakistan, Eastern Tethys. Organic-rich shale coal intervals were utilized for geochemical analyses including TOC (total carbon) Rock–Eval pyrolysi...

A series of experiments were carried out in an arched tunnel (50 m long, 2 wide, 2.3 high). Under the influence aspect ratios (1, and 3) oil pool orientation relative to sidewall, flame length temperature distribution under ceiling was studied. Oil pools with 3 placed center as a control group. Results show that sidewall is decisive factor affecting fire behavior. The heat release rate decrease...

Applying partially miscible lubricating oil-refrigerant mixtures instead of completely ones in refrigeration systems is a promising way to avoid the refrigerant insufficiency, and application oil requires clarity nucleate pool boiling characteristics mixtures. As at conditions show an entirely different stratification process compared or non-boiling studied by former researchers, existing resea...

B10.RIII and B10.G mice were transferred from a diet of laboratory rodent chow to a standard diet in which all the fat (5% by weight) was supplied as either fish oil (17% eicosapentaenoic acid [EPA], 12% docosahexaenoic acid [DHA], 0% arachidonic acid [AA], and 2% linoleic acid) or corn oil (0% EPA, 0% DHA, 0% AA, and 65% linoleic acid). The fatty acid composition of the macrophage phospholipid...

Natural gas production is associated with emissions of several trace gases, some of them classified as air toxics. While volatile organic compounds (VOCs) have received much attention, hydrogen sulfide (H2S) can also be of concern due to the known health impacts of exposure to this hazardous air pollutant. Here, we present quantitative, fast time-response measurements of H2S using protontransfe...