Chinese Science Bulletin

A large number of weakly metamorphosed or unmetamorphosed intermediate-basic dykes are developed in the Zhongtiao Mountain area. They are large-scale dykes in the early Mesoproterozoic of the North China Craton (1.80~1.76 Ga). An important component of the dyke swarm, accurately determining its emplacement age will have a profound impact on the fine spatiotemporal distribution of the dyke swarm, and understanding the geomorphology of the North China Craton during this period. The process of spherical dynamics is of great significance. This study carried out baddeleyite ion probe dating on a

LINE-1 (L1) is a class of autonomous mobile genetic elements that form somatic mosaicisms in various tissues of the organism. The activity of L1 retrotransposons is strictly controlled by many factors in somatic and germ cells at all stages of ontogenesis. Alteration of L1 activity was noted in a number of diseases: in neuropsychiatric and autoimmune diseases, as well as in various forms of cancer. Altered activity of L1 retrotransposons for some pathologies is associated with epigenetic changes and defects in the genes involved in their repression. This review discusses the molecular genet

Herein, we report the function of copper sites in Cu-SSZ-13, Cu-ZSM-5 and Cu-Beta catalysts with the same Si/Al ratio (14) and Cu/Al ratio (0.4) on selective catalytic reduction of NO with NH3 (NH3-SCR) and reveal the relationship between active sites (Cu sites, acid sites) and catalytic activity. The results show that the amount of isolated Cu2+ ions in the catalysts directly determines the formation of strong Lewis acid sites and reaction intermediate NO3− ions, thus affecting the low-temperature SCR performance, while the amount of highly stable Cu+ ions and Brønsted acid si

Based on metal-oxide-semiconductor field-effect transistor (MOSFET) devices and Von Neumann architecture semiconductor chip technology has led mankind into the information age. In recent years, new computing architectures have flourished. However, specialized algorithms and When mapping brain-like intelligent algorithms to MOSFET circuits, they usually face challenges such as high hardware overhead and low system energy efficiency. In response to the above problems, this paper developed a New transistor devices with the characteristics of fusion of storage and calculation are effectively ad

The cone photoreceptors in our eyes selectively transduce the natural light into spiking representations, which endows the brain with high energy-efficiency color vision. However, the cone-like device with color-selectivity and spike-encoding capability remains challenging. Here, we propose a metal oxide-based vertically integrated spiking cone photoreceptor array, which can directly transduce persistent lights into spike trains at a certain rate according to the input wavelengths. Such spiking cone photoreceptors have an ultralow power consumption of less than 400 picowatts per spike in vi