Hydrogenases catalyze the reversible activation of dihydrogen. We have previously demonstrated that the purified hydrogenase from the nitrogen-fixing microorganism Azotobacter vinelandii is an alpha beta dimer (98,000 Da) with subunits of 67,000 (alpha) and 31,000 (beta) daltons and that this enzyme contains iron and nickel. The enzyme can be purified anaerobically in the presence of dithionite...

Similar behavioral deficits are shared between individuals with autism spectrum disorders (ASD) and their first-degree relatives, such as impaired face memory, object recognition, and some language aspects. Functional neuroimaging studies have reported abnormalities in ASD in at least one brain area implicated in those functions, the fusiform gyrus (FG). High frequency oscillations have also be...

Accumulative evidence shows that neural variability is meaningful and powerful during brain information processing, but how cognitive state influences neural variability is still unclear. We studied neural variability during motor preparation in lateral intraparietal area (LIP), a brain area closely involved in saccade generation. During motor preparation, we observed significant variability de...

Field potential recordings from motor cortex show oscillations in the beta-band (approximately 20 Hz), which are coherent with similar oscillations in the activity of contralateral contracting muscles. Recent findings have revised concepts of how this activity might be generated in the cortex, suggesting it could achieve useful computation. Other evidence shows that these oscillations engage no...

Emotion status influences important areas in our daily lives. Many researchers reported successful emotion classifications. The aim of this study is to find out the neurophysiological characteristics of the brain waves while affective pictures elucidate emotion. Four healthy college students volunteered the stimulus experiment with the standard IAPS affective pictures. All brain waves showed ac...

Temporal information can be retained and manipulated in working memory (WM). Neural oscillatory changes in WM were examined by varying temporal WM load. Electroencephalography was obtained from 18 subjects performing a temporal version of the visual n-back WM task (n = 1 or 2). Electroencephalography revealed that posterior alpha power decreased and temporal region-distributed beta power increa...

The best-studied cytoskeletal system is the inner surface of the erythrocyte membrane, which provides an erythrocyte with the structural support needed to be stable yet flexible as it passes through the circulation. Current structural models predict that the spectrin-actin-based cytoskeletal network is attached to the plasma membrane through interactions of the protein ankyrin, which binds to b...

The search for highly effective and environmentally safe photocatalysts water splitting photovoltaic solar cells is essential renewable energy conversion storage. Based on first principles calculations, we show that novel 2D $\beta$-PdX$_2$ (X = S, Te) monolayer possesses excellent stabilities great potentials in applications. Comprehensive studies the exhibits semiconductor characteristics wit...

Corticomuscular synchronization has been shown to occur in beta (15-30 Hz) and gamma range (30-45 Hz) during isometric compensation of static and dynamic (periodically modulated) low-level forces, respectively. However, it is still unknown to what extent these synchronization processes in beta and gamma range are modified with increasing modulated force. We addressed this question by investigat...

The subcellular localization of N-formylmethionyl-leucyl-phenylalanine (fMLP) receptors in human neutrophils was investigated. The fMLP receptor was detected with a high-affinity, photoactivatable, radioiodinated derivative of N-formyl-methionyl-leucyl-phenylalanyl-lysine (fMLFK). Neutrophils were disrupted by nitrogen cavitation and fractionated on Percoll density gradients. fMLP receptors wer...