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Hidden hydrogen: Earth may hold vast stores of a renewable, carbon-free fuel
IN THE SHADE of a mango tree, Mamadou Ngulo Konaré recounted the legendary event of his childhood. In 1987, well diggers had come to his village of Bourakébougou, Mali, to drill for water, but had given up on one dry borehole at a depth of 108 meters. “Meanwhile, wind was coming out of the hole,” Konaré told Denis Brière, a petrophysicist and vice president at Chapman Petroleum Engineering, in 2012. When one driller peered into the hole while smoking a cigarette, the wind exploded in his face. “He didn’t die, but he was burned,” Konaré continued. “And now we had a huge fire. The color of the fire...
Source: ScienceNOW - February 16, 2023 Category: Science Source Type: news

Discovery of the regulatory role of calcium ion in muscle contraction and relaxation: Setsuro Ebashi and the international emergence of Japanese muscle research
Adv Physiol Educ. 2022 Jun 27. doi: 10.1152/advan.00108.2022. Online ahead of print.ABSTRACTIn the early 1950s Setsuro Ebashi was a graduate student at Tokyo University studying the biochemical models of muscle contraction. These models contracted in the presence of ATP but what caught his attention was that the models did not relax when ATP was exhausted. Ebashi decided in 1952 to attempt to elucidate the mechanism of muscle relaxation using these models. This decision started a journey that would lead him to be the first to propose the calcium concept of muscle contraction and relaxation in 1961. It was an unpopular theo...
Source: Advances in Physiology Education - June 27, 2022 Category: Physiology Authors: Jack A Rall Source Type: research

Kcnab1 Is Expressed in Subplate Neurons With Unilateral Long-Range Inter-Areal Projections
In this study, we analyzed the corticocortical projections of L6b/SP neurons in the mouse cortex and searched for a marker gene expressed in L6b/SP neurons that have ipsilateral inter-areal projections. Retrograde tracing experiments demonstrated that L6b/SP neurons in the primary somatosensory cortex (S1) projected to the primary motor cortex (M1) within the same cortical hemisphere at postnatal day (PD) 2 but did not show any callosal projection. This unilateral projection pattern persisted into adulthood. Our microarray analysis identified the gene encoding a β subunit of voltage-gated potassium channel (Kcnab1)...
Source: Frontiers in Neuroanatomy - May 2, 2019 Category: Neurology Source Type: research

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