Biomass is the oldest form of energy used by human beings, mainly in the form of wood. It is a renewable source of energy and has many advantages from an ecological point of view. The direct combustion of biomass generates concern among environmentalists, as it is incomplete and inconsistent and may produce organic particulate matter, carbon monoxide and other organic gases. Biomass gasificatio...

the mixing behavior of the gas-liquid phase in three loop bioreactors was investigated. a gas-induced external airlift loop bioreactor (ealb), a forced-liquid vertical tubular loop bioreactor (vtlb) and a forced-liquid horizontal tubular loop bioreactor (htlb) were used for mixing studies as well as biomass production from natural gas. the effect of design parameters, riser to downcomer cross s...

Cervical cancer represents the second most frequent malignancy in women worldwide, a significant number of cases still being diagnosed in an advanced stage of the disease. In some of these cases, local invasion is already present at the moment of diagnosis and even if neo-adjuvant chemoirradiation is performed in some patients, it persists at the moment of surgery. In these cases, more aggressi...

A 50-year-old-male was admitted to our hospital in March 2007, complaining of cough and hemoptysis for 3 months. Postero-anterior chest X-ray showed an opacity on right upper zone. Computed tomography of the thorax showed a mass lesion occupying the right upper lobe and superior segment of the lower lobe and invading the mediastinum. Fiberoptic bronchoscopy showed total occlusion of the right u...

period, they were exposed not only to new ecological opportunities but also to a desiccating environment (Williams and Tieleman, 2002). To maintain cellular water homeostasis in such an environment, natural selection modified the integument of pioneering terrestrial animals, enabling them to reduce water loss through the skin. Nowhere is this modification of the integument more important than f...

A fast and accurate solution is provided for landfill gas component analysis by the Agilent 3000 Micro GC configured with two performance-enhanced modules. The individual components are baseline separated in less than 30 seconds by a two-channel configured Micro GC. With this solution, landfill gas can be monitored and controlled easily. Authors Wenmin Liu Agilent Technologies Co. Ltd. 412 Ying...