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Carbon Dioxide - DOAJ

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Last Updated: 10 January 2023

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Systemic immune inflammation index and peripheral blood carbon dioxide concentration at admission predict poor prognosis in patients with severe traumatic brain injury

Background informationResearch results have shown that systemic inflammation response and hyperventilation are associated with poor outcomes in patients with severe traumatic brain injury. MethodsThis retrospective review was conducted retrospectively to analyze the correlation between the systemic immune inflammation index and peripheral blood CO2 concentration at admission with the Glasgow Outcome Score from January 2016 to December 2021, and the GOS was measured 6 months after discharge. To determine the independent prognostic factors for GOS in patients with severe TBI, a multivariate logistic regression analysis was used. To determine the value of SII and coSII-CO2 in predicting patients with severe TBI, patients with severe TBI, prediction of patient prognosis was based on ROC curve, nomogram, calibration curve, and decision curve analyses. To create the CRASH model and the IMPACT model, we used the multifactor regression analysis software. Patients with elevated SIII and low CO2 were significantly poorer than those with low SIII and high CO2 after being discharged in patients with elevated SIII and low CO2 at 6 months after discharge of patients with high SIII and low CO2 were much poorer than those with poor SII and high CO2 in comparison to those with low SIII and high CO2 and high CO2 at 6 months. According to machine learning, coSII-CO2 ranked first in importance and was followed by pupil size, then SII. ConclusionsSII and CO2 had better predictive results than NLR, PLR, and LMR. As new, reliable and objective clinical predictors, SII and CO2 can be used as new, reliable and accurate clinical predictors, and coSII-CO2, based on mixing SII and CO2, can be used to enhance the accuracy of GOS prediction in patients with TBI 6 months after discharge.

Source link: https://doi.org/10.3389/fimmu.2022.1034916


FOSSIL FUEL PRICE, CARBON DIOXIDE EMISSION, AND RENEWABLE ENERGY CAPACITY: EVIDENCE FROM ASIAN DEVELOPING COUNTRIES

Using a sample of 14 Asian developing countries from the years 2000 to 2018, this paper explored the effects of fossil fuel price and carbon dioxide pollution on renewable energy. Fossil fuel prices, mainly those of crude oil and coal, are positively linked to renewable energy production. The positive effect of CO2 pollution over coal fuels and CO2 pollution was outweighed by that of fossil fuels and CO2 emissions.

Source link: https://doi.org/10.32890/ijbf2021.16.1.5


Experimental study on supercritical carbon dioxide gasification of biomass

Abstract: Biodiverification as an efficient method of biomass energy utilization has gained increasing traction around the world due to the overuse of fossil energy and environmental safety. Carbon dioxide gasification of biomass is a promising process, with near-liquid density and high solubility. Experimental research on supercritical carbon dioxide gasification of biomass was carried out in a batch reactor in this series. Experimental results showed that biomass gasification's efficiency and carbon dioxide reduction efficiency increased with increasing temperature, reaction time, and amount of carbon dioxide. As the gasification temperature increased from 700 °C to 900 u00b0C, the carbon yield increased from 23. 53 to 54. 3 percent in a CO2 atmosphere at 30 minutes.

Source link: https://doi.org/10.1007/s43979-022-00043-3


An eco-friendly method of extracting alizarin from Rubia tinctorum roots under supercritical carbon dioxide and its application to wool dyeing

Abstract Supercritical fluid extraction technique because of its low critical temperature and pressure levels, supercritical carbon dioxide is the most commonly used supercritical fluid in the supercritical fluid extraction process. The alizarin revival and its presence in R. tinctorum extract under ideal conditions were 1. 34 g/kg roots and 6. 42 percent, respectively, under optimum conditions. Wool fabrics were dyed with RE at different concentrations using conventional dyeing techniques. Based on RE concentration and mordant type, dyed wool fabrics' color and fastness characteristics were determined.

Source link: https://doi.org/10.1038/s41598-022-27110-0


Ventilation during continuous compressions or at 30:2 compression-to-ventilation ratio results in similar arterial oxygen and carbon dioxide levels in an experimental model of prolonged cardiac arrest

Abstract Background In a refractory out-of-hospital cardiac arrest, transportation to a hospital with ongoing chest compressions from a chest compression unit and ventilation with 100% oxygen through an advanced airway is common practice. Chest compressions were performed with a Stryker Medical LUCASu00ae 2 mechanical chest compression unit. During the CPR, arterial blood gas samples were collected every 5 min, analyzed air flow during the CPR by electrical impedance tomography, and reviewed post-mortem computed tomography scans for differences in lung aeration status. The CCC group's median partial pressure of oxygen at 30 min was 110 mmHg for the 30:2 group and 70 mmHg for the CCC group. Carbon dioxide's average partial pressure at 30 minutes was 70 mmHg for the 30:2 group and 68 for the CCC group. Conclusions In an experimental prolonged mechanical CPR model, the 30:2 and CCC protocols resulted in similar gas exchange and lung pathology.

Source link: https://doi.org/10.1186/s40635-022-00485-0


Carbon Dioxide Concentration and Emissions along a Trophic Gradient in Tropical Karst Lakes

Quantifying the CO 2 emissions of inland aquatic ecosystems of various trophic statuses may provide useful insight into the role of eutrophication on greenhouse gas emissions. para 202122 d u22121 d u22122121 d u22121 over the rainy/warm season, with an average of 0. 8 g CO 2 122 m CO 2 m averaging 4. 9 m CO 2 m U22121 d u22121 d u22122121 over the dry/cold season. CO 2 2. 2 g CO 2 m CO 2 m b 122121 d u22121 d a u22122121 b1 1. 1 a d a d u22121 m et u22121 m u22121 b1 d u22121 a u22121 t d u22121 d a d u22121 a u22121 t e2 d t 1. 1 102121 2. 2 122121 d 172121 t u22121 t tu22121 During the rainy/warm season, the emission of the eutrophic lake San Lorenzo was higher, but during the dry/cold season, the largest emission was recorded in the mesotrophic lake San Josu00e9.

Source link: https://doi.org/10.3390/w15010013


Reinforcing a Thermoplastic Starch/Poly(butylene adipate-co-terephthalate) Composite Foam with Polyethylene Glycol under Supercritical Carbon Dioxide

We investigated the effect of polyethylene glycol with or without silane A on the foam density, cell structure, and tensile characteristics of TPS/PBAT blends in this research. The 50% /50% PBAT blends are generally produced foams with lower foam content and improved cell wall structure than those of the 50% /50% PBAT blends. Each 50% /50% PBAT foam foam's tensile strength is generally higher than that of each 50% /50% PBAT foam.

Source link: https://doi.org/10.3390/polym15010129


Modeling of Optimized Lattice Mismatch by Carbon-Dioxide Laser Annealing on (In, Ga) Co-Doped ZnO Multi-Deposition Thin Films Introducing Designed Bottom Layers

The substrate and the bottom layer of the film showed the lowest mismatch ratio between the substrate and the bottom layer of the film, according to Ga-doped ZnO multi-deposition thin films with Ga-doped ZnO as the bottom layer had the lowest mismatch ratio between the substrate and the bottom layer of the film. Achievable sheet resistance of 34. 5 ksq and a high transparency rate of almost 90% in the visible light wavelength range were obtained after applying the carbon-dioxide laser annealing process to the co-doped ZnO multi-deposition thin films with Ga-doped ZnO as the bottom layer.

Source link: https://doi.org/10.3390/nano13010045

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions