Determining the appropriate mixing ratio in a multi-substrate anaerobic digestion of organic solid wastes employing Taguchi method.

The current research proposed a method for optimally combining feed input ratios in order to improve the quantity and quality of daily biogas production through optimizing the variable response level in the Taguchi method. The anaerobic digestion (AD) process of an existing plant in Iran was simulated through a set of two-stage pilot reactors under mesophilic temperature conditions in order to achieve optimal operational performance. Three common substrates (organic fraction of municipal solid wastes, fruit and vegetable wastes, and horse manure) along with two recirculated materials; the post-digestion sludge and the secondary digester slurry, were investigated in 16 experimental runs based on four different pre-surface hypotheses.

Physiological upper limits of left ventricular dimensions in highly trained junior tennis players.

Background: The differentiation between physiological cardiac enlargement and cardiomyopathy is crucial, considering that most young non-traumatic deaths in sport are due to cardiomyopathy. Currently, there are few data relating to cardiac dimensions in junior elite tennis players. The aim of this study was to define the upper limits of left ventricular dimensions in a large cohort of national adolescent tennis players.

Primary gastric T-cell lymphoma with cutaneous involvement. A case report and review of the literature.

Primary gastric T-cell lymphomas are extremely rare. We report a Ki-1 negative primary gastric T-cell lymphoma of the anaplastic large cell type associated with extensive involvement of the skin, gastrointestinal tract, and other organ involvement in a patient not known to be immunocompromized. Biopsy of the stomach and distal esophagus showed infiltration of gastric mucosa and the squamous epithelium by nests of large atypical cells with vacuolated or clear cytoplasm, consistent with large cell lymphoma.