Liquid-to-gas mass transfer in anaerobic processes was investigated theoretically and experimentally. By using the classical definition of kLa, the global volumetric mass transfer coefficient, theoretical development of mass balances in such processes demonstrates that the mass transfer of highly soluble gases is not limited in the usual conditions occurring in anaerobic fermentors (low-intensi...

Carbon dioxide angiography is routinely used for vascular imaging and endovascular procedures. It is very useful in patients with allergy to iodinated contrast agents or with poor renal function. It is relatively safe to use. We describe first case of cerebral gas embolism leading to multiple bilateral ischemic strokes in a patient receiving carbon dioxide angiography for workup of thrombosed a...

... ..... .. .. .. .. .... ............... ...... ... . ........ .......... ... ... . .. 661 From Resource Scarcity to Decarbonization ...... .. .. ..... 662 Energy Intensity and Decarbonization .... .................. ... 663 Carbon Dioxide Mitigation .......................................... 667 Methane as an Energy Gas of Choice ...... .... ...... .. ........ 668 Energy Scenarios and Decarb...

Introduction: Near-infrared spectra returned by the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM, [1]) on-board the Mars Reconnaissance Orbiter (MRO) contain the clear spectral signature of several atmospheric gases including carbon dioxide (CO2), water vapor (H2O), and carbon monoxide (CO). Here we describe the seasonal and spatial mapping of water vapor and carbon dioxide for o...

Anopheles gambiae s.s. Giles, a highly anthropophilic mosquito species, is Africa's most important malaria vector (White, 1974). It has been shown that this species is attracted to 4.5% carbon dioxide (Knols et al., 1994a), a dose thought to be equivalent to what is emitted by humans during breathing. Also, evidence exists for an activating and attracting effect of carbon dioxide in the field (...

1.1 Carbon dioxide sequestration in sub-seabed geological formations is a process consisting of separation of carbon dioxide from industrial and energy-related sources, transport to an offshore geological formation, and long-term isolation from the atmosphere. This process is one option in a portfolio of mitigation actions for stabilization of atmospheric greenhouse gas concentrations with the ...

Liquid-to-gas mass transfer in anaerobic processes was investigated theoretically and experimentally. By using the classical definition of k(L)a, the global volumetric mass transfer coefficient, theoretical development of mass balances in such processes demonstrates that the mass transfer of highly soluble gases is not limited in the usual conditions occurring in anaerobic fermentors (low-inten...

The reported association of cot death and sleeping prone could be due to rebreathing of expired gases. A mechanical model simulating the respiratory system of an infant, exhaling warm humidified air with an end tidal carbon dioxide of 5%, has been used to investigate this. Some commonly used bedding materials caused an accumulation of carbon dioxide of 7% to over 10% with the model lying face d...

BACKGROUND Surfactant protein type B (SPB) is needed for alveolar gas exchange. SPB is increased in the plasma of patients with heart failure (HF), with a concentration that is higher when HF severity is highest. The aim of this study was to evaluate the relationship between plasma SPB and both alveolar-capillary diffusion at rest and ventilation versus carbon dioxide production during exercise...

LmLEJOHN, A. & BOWLES, FELICITY, 1982. Studies on the physiopathology of c~~r?nic obstructive pulmonary disease in the horse. VI. The alveolar dead space. Onderstepoon Journal ofVetenMry Research, 49. n..:n (1"982!. The alveolar dead space (VDalv) as a percentage of tidal volume was calculated in horses by substituting the values for partial pressure of carbon dioxide in end-expiratory gas (PE'...