The deuterium-to-hydrogen (D/H or 2H/1H) ratio of Martian atmospheric water (∼6× standard mean ocean water, SMOW) is higher than that known sources, requiring planetary enrichment. A recent measurement by NASA's Mars Science Laboratory rover Curiosity Hesperian-era (>3 Ga) clays yields a D/H ∼3×SMOW, demonstrating most the enrichment occurs early in Mars's history, reinforcing conclusions meteo...

Abstract In this study, we systematically analyze the effects of hydrogen enrichment in well-known PRECCINSTA burner, a partially premixed swirl-stabilized methane/air combustor. Keeping equivalence ratio and thermal power constant, vary percentage fuel. Successive increments fuel fraction increase adiabatic flame temperature also shift dominant frequencies acoustic pressure fluctuations to hig...

The Py-GC/MS results of the study carried out on two groups of vitrinites (perhydrous and non-perhydrous) of di€erent age and properties and on a trimaceralic coal associated with one of the perhydrous group are discussed. Such a study provides information about the e€ect of natural hydrogen enrichment on vitrinite structure at the molecular level. Moreover, the in ̄uence of the di€erent conditi...

The number of injector holes and the fuel-injection pressure in an internal combustion engine can affect performance exhaust emissions. Conversion a port-injection gasoline to HCNG direct-injection improves In addition, increasing injection helps increase performance. this study, AVL Fire software was used perform simulation by certain adjustments. applied mods 15, 20, 25 bars, numbers were 3 6...

The present project was conducted with the circumferential-fuel-jets inverse diffusion flame (CIDF) burner burning liquefied petroleum gas (LPG) enriched with 50% of hydrogen fuel (H2). The range of stable operation of the CIDF burner in terms of Reynolds number (from laminar to turbulent flow regions), equivalence ratio and fuel jet velocity of LPG of the 50% H2-LPG mixed fuel was identified. ...

The recent structural elucidation of about one dozen channels (in which we include transporters) has provided further evidence that these membrane proteins typically undergo large movements during their function. However, it is still not well understood how these proteins achieve the necessary trade-off between stability and mobility. To identify specific structural properties of channels, we c...

The use of2H2O in estimating gluconeogenesis' contribution to glucose production (%GNG) was examined during progressive fasting in three groups of healthy subjects. One group ( n = 3) ingested2H2O to a body water enrichment of ≈0.35% 5 h into the fast. %GNG was determined at 2-h intervals from the ratio of the enrichments of the hydrogens at C-5 and C-2 of blood glucose, assayed in hexamethylen...

In order to determine human triglyceride fatty acid (TG-FA) synthesis rates, the incorporation of deuterium from the plasma water pool in vivo into TG-FA was measured over 48 h in six healthy males under steady state conditions. Subjects consumed a nutritionally complete liquid diet as six evenly spaced small meals per day for 3 days and drank 0.7 g D2O/kg estimated body water, (99.8 APE) at 08...

Background: Developing and promoting empathy between couples can assist them in dealing with destructive communication patterns, increasing their satisfaction through effective dialogue and conversation, and, as a result, creating a safe place to meet emotional needs. The present study aimed to determine the effectiveness of Olson’s enrichment training program and Johnson’s relationship enrichm...