Aqueous Solid Formation Kinetics in High-Pressure Methane at Trace Water Concentrations.

Natural gas containing trace amounts of water is frequently liquefied at conditions where aqueous solids are thermodynamically stable. However, no data are available to describe the kinetics of aqueous solid formation at these conditions. Here, we present experimental measurements of both solid formation kinetics and solid-fluid equilibrium for trace concentrations of (12 ± 0.

A mass mimicking pancreatic adenocarcinoma, should hepatobiliary surgeons keep it in mind? a case report.

Isolated metastasis to pancreas from lung cancer is an extremely rare entity, usually reported in case series and case reports in the medical literature; estimated to account for up to 3-5% of all pancreatic lesions. Herein, we describe a case of a male patient suffering from metachronous metastatic lesion to the tail of the pancreas secondary to non small cell lung carcinoma treated 4 years prior to his presentation. The patient underwent pancreatic resection due to high clinical suspicion for the malignant nature of the mass, which was proved to be secondary lesion from its prior primary tumor.

An unusual cause of large bowel obstruction: are we aware of this?

Primary lymphomas of the colon account for 0.5% of all primary colon malignancies. Burkitt´s lymphoma is a B-cell lymphoma with aggressive clinical behavior.

Hydrate nucleation and growth on water droplets acoustically-levitated in high-pressure natural gas.

Hydrate formation was studied using water droplets acoustically levitated in high-pressure natural gas. Despite the absence of solid interfaces, the droplets' area-normalised nucleation rate was about four times faster than in steel autoclave measurements with interfacial areas roughly 200 times larger. Multiple stages of stochastic, template-free hydrate growth were observed.

Gas Hydrate Formation Probability Distributions: The Effect of Shear and Comparisons with Nucleation Theory.

Gas hydrate formation is a stochastic phenomenon of considerable significance for any risk-based approach to flow assurance in the oil and gas industry. In principle, well-established results from nucleation theory offer the prospect of predictive models for hydrate formation probability in industrial production systems. In practice, however, heuristics are relied on when estimating formation risk for a given flowline subcooling or when quantifying kinetic hydrate inhibitor (KHI) performance.