The aim of the current study was to identify the protective effect of hydrogen gas against liver injury during CO2 pneumoperitoneum. Rats were randomly divided into three groups: control group (C group), pneumoperitoneum group (P15 group) and hydrogen group (H2 group). Rats in the C group were subjected to anesthesia for 90 min. Rats in the P15 group received an abdominal insufflation of CO2 fo...

Carbon dioxide (CO2) is a colorless, odorless gas which occurs naturally in the atmosphere and human body. With the advent of digital subtraction angiography, the gas has been used as a safe and useful alternative contrast agent in both arteriography and venography. Because of its lack of renal toxicity and allergic potential, CO2 is a preferred contrast agent in patients with renal failure or ...

Miscible gas injection, as an Enhanced Oil Recovery (EOR) method, can improve the recovery factor by swelling the residual oil and phasing out the interfacial tension [1]. However, the sweep efficiency of miscible gas injection is not satisfactory because of conformance problems, such as viscous fingering, channelling and gravity override [2]. Foam can solve the problems associated with gas inj...

Tracheal gas insufflation (TGI) flushes expired gas from the ventilator circuitry and central airways, augmenting CO2 clearance. Whereas a significant portion of this washout effect may occur distal to the injection orifice, the penetration and mixing behavior of TGI gas has not been studied experimentally. We examined the behavior of 100% oxygen TGI injected at set flow rates of 1-20 l/min int...

respiration is one of the important factors to be considered in a determination of the quality of cut flowers during their postharvest preservation period. modified atmospheric packaging (map) is an effective way of reducing respiration rate along with increasing vase life while the quality of cut flowers also well maintained. this research was conducted on the basis of a factorial experiment, ...

The performance of a mixed microbial community was tested in lab-scale power-to-methane reactors at 55 °C. main aim to uncover the responses starvation and stoichiometric H2/CO2 supply as sole substrate. Fed-batch were inoculated with fermentation effluent thermophilic biogas plant. Various volumes pure gas mixtures injected into headspace daily process parameters followed. Gas composition meas...

the analytical theory of one dimensional, dispersion free miscible displacement of oil by injection gas with nc component has shown that: the mmp is the lowest pressure at which any one of the initial oil, injection gas or crossover key tie lines becomes critical, which means that its length approaches to zero. in this paper, we propose a method for a solving multi component system based on ana...

Injection of carbon dioxide into geological formations for long-term storage is widely regarded as a promising tool for reducing global atmospheric CO2 emissions. Given the environmental and health risks associated with leakage of CO2 from such a storage site, it is critical to ensure that injected CO2 remain trapped underground for the foreseeable future. Careful site selection and effective i...