To the Editor—Pathogens can contaminate the environment and cause infections. In hospitals, contamination of the environment is frequent and expected. Toilets in hospitals are an area of concern. The high contamination rates of toilet tap handles or levers for manual flushing are reported in many publications. Toilet seats and handles are commonly found to be contaminated. A good “toilet design...

Biochar is the product of the pyrolysis of organic materials in a reduced state. In recent years, biochar has received attention due to its applicability to organic waste management, thereby leading to active research on biochar. However, there have been few studies using food waste. In particular, the most significant difference between food waste and other organic waste is the high salinity o...

A series of column and flow-cell experiments was conducted to investigate the impact of non-uniform organic-liquid distribution on the relationship between reductions in contaminant mass discharge and reductions in source zone mass under conditions of enhanced-solubilization flushing. Trichloroethene was used as the model organic liquid, and SDS (sodium dodecyl sulfate) and ethanol were used as...

A 63-year-old male experienced 3 years of excruciating, right retro-orbital, 15–90 minute headaches occurring 1 to 3 times daily associated with ipsilateral lacrimation, ptosis, and facial congestion. The episodes began after a complicated right root canal procedure. He also reported separate episodes of distinct left sided facial flushing triggered by exertion as evidenced by a photo that he p...

Three different methods to analyse fine sediment deposits on a gravel bar using pictures are presented in this paper. A manual digitization and deposits zone delineation are performed as well as two different automated procedures. The three methods are applied on aerial pictures taken in 2006 by a drone from a height around 150 m above the study site. Two other sets of pictures taken in 2010 ar...

Hypercholesterolemia is one of the main factors in the development of atherosclerotic cardiovascular disease. The advent of statins led to huge progress in the treatment of hypercholesterolemia, yet the proportion of patients with prohibitive lipid values and the high incidence of cardiovascular events despite treatment are still very high. Niacin, one of the older drugs used to treat hyperlipi...

BACKGROUND Gallstone disease affects 15-20% of the general population and up to 20% of these patients present common bile duct stones. AIM This observational study reports our experience on routine cysticotomy and flushing of the cystic duct in patients with low risk of common duct stones. MATERIALS AND METHODS We analyzed 731 patients who underwent laparoscopic cholecystectomy between Sept...

Although the hot flush is generally recognised by women and the medical profession as the most characteristic and often a very distressing symptom of the climacteric, it remains an enigma. The physiological changes associated with the hot flush are different from any other flushing condition, with an increased peripheral blood flow, increased heart rate and in particular a decrease in galvanic ...

Flow in porous media is a significant challenge to many computational fluid dynamics methods because of the complex boundaries separating pore fluid and host medium. However, the rapid development of the lattice Boltzmann methods and experimental imaging techniques now allow us to efficiently and robustly simulate flows in the pore space of porous rocks. Here we study the flow and dispersion in...

Much automatic pipeline verification research of the last decade has been based on some form of “Burch-Dill flushing” [BD94]. In this work, we study synchronization-at-retirement, an alternative formulation of correctness for pipelines. In this formulation, the proof obligations can also be verified automatically but have significantly-reduced verification complexity compared to flushing. We pr...