نتایج جستجو برای: mec
تعداد نتایج: 3511 فیلتر نتایج به سال:
A widely cited review of the digestive efficiency of birds concluded that the apparent Metabolisable Energy Coefficient (*MEC), a measure of the efficiency of energy assimilation, did not vary between bird orders. To test whether this result was due to the variation between the experimental methods of the studies chosen for the review, the *MEC was measured for four species (two galliforms and ...
The entorhinal cortex provides the primary cortical projections to the hippocampus, a brain structure critical for memory. However, it remains unclear how the precise firing patterns of medial entorhinal cortex (MEC) cells influence hippocampal physiology and hippocampus-dependent behavior. We found that complete bilateral lesions of the MEC resulted in a lower proportion of active hippocampal ...
Mucoepidermoid carcinoma (MEC) of the thyroid is very rare and low-grade indolent neoplasm. In past reports of the thyroid MEC, only seven cases were described as poor prognosis. A 91-year-old woman presented with a rapidly growing mass of the left upper neck. She was followed thyroid papillary carcinoma (PC) without operation for two years. Fine needle aspiration cytology (FNAC) showed undiffe...
Hydrogen gas production from cellulose was investigated using an integrated hydrogen production process consisting of a dark fermentation reactor and microbial fuel cells (MFCs) as power sources for a microbial electrolysis cell (MEC). Two MFCs (each 25 mL) connected in series to an MEC (72 mL) produced a maximum of 0.43 V using fermentation effluent as a feed, achieving a hydrogen production r...
Mucoepidermoid carcinoma of the esophagus (MEC) is uncommon and has not been fully investigated. The biological behavior and clinical aspects of MEC were studied. The clinical features of eight patients with MEC were compared with 51 cases of squamous cell carcinoma of the esophagus (SCC). Proliferating cell nuclear antigen (PCNA), p53, and carcinoembryonic antigen (CEA) were stained in the res...
In certain stereotyped lineages of Caenorhabditis elegans, the mec-3 gene is transcribed in neurons that are anterior daughters of cells containing the UNC-86 protein. UNC-86 binds to the mec-3 promoter and is necessary for transcription activation, but this protein is present in many cells that do not transcribe mec-3, including the posterior sister and parent cells of the mec-3 expressing neu...
In this paper, we suggest the new variable selection procedure, called MEC, for linear discriminant rule in the high-dimensional setup. MEC is derived as a second-order unbiased estimator of the misclassification error probability of the linear discriminant rule. It is shown that MEC not only decomposes into ‘fitting’ and ‘penalty’ terms like AIC and Mallows Cp, but also possesses an asymptotic...
In methicillin-resistant Staphylococcus aureus, the methicillin resistance gene mecA is localized within a large chromosomal region which is absent in the methicillin-susceptible S. aureus chromosome. The region, designated mec DNA, is speculated to have originated from the genome of another bacterial species and become integrated into the chromosome of the S. aureus cell in the past. We report...
BACKGROUND Biohythane is a new and high-value transportation fuel present as a mixture of biomethane and biohydrogen. It has been produced from different organic matters using anaerobic digestion. Bioenergy can be recovered from waste activated sludge through methane production during anaerobic digestion, but energy yield is often insufficient to sludge disposal. Microbial electrolysis cell (ME...
This study aims to elucidate the level of DNA methylation in urothelial carcinomas (UCs) using 5-methylcytosine (5-MeC) immunohistochemistry (IHC). We examined the relationship among 5-MeC levels, DNA (cytosine-5)-methyltransferase 1 (DNMT1) immunostaining levels, and clinicopathologic features. Tissue samples included 23 normal urothelia and 150 urothelial neoplasia, which comprised 40 non-inv...
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