Because ER stress is one of the signaling pathways involved in the regulation of autophagy, we hypothesized that ER stress might also play an important role in radiation-induced autophagy. SHG44 and HeLa cells were ir...Because ER stress is one of the signaling pathways involved in the regulation of autophagy, we hypothesized that ER stress might also play an important role in radiation-induced autophagy. SHG44 and HeLa cells were irradiated with X-rays and carbon ions of 30 and 75 keV/m at 2 Gy. The expression levels of Bip, a major indicator of UPR, at 4 and 24 h post-irradiation are shown in Fig. 1(a) and (b) for SHG44 and HeLa cells, respectively.展开更多
A nuclear astrophysics experiment was performed at CRIB (CNS low-energy Radioactive-Ion Beam separator)on Mar. 2011. The goal of this experiment is to study the reaction rate of 18Ne(,p)21Na reaction, which mightbe a ...A nuclear astrophysics experiment was performed at CRIB (CNS low-energy Radioactive-Ion Beam separator)on Mar. 2011. The goal of this experiment is to study the reaction rate of 18Ne(,p)21Na reaction, which mightbe a key breakout reaction from the hot CNO cycle to rp-process in X-ray burst and nova. Yet its reaction rate ispoorly known.Explosive hydrogen burning is thought to be the main source of energy generation and a source of nucleosynthesisin X-ray burst and nova[1;2]. For example, XRBs are characterized by a sudden increase of X-ray emission withinonly a few seconds to a total energy output of about 1040 ergs, which is observed to repeat with some regularity.The recurrence time for single bursts can range from hours to days at the typical temperature of 0.4～2 GK. Thebursts have been interpreted as being generated by thermonuclear runaway on the surface of a neutron star thataccretes H- and He-rich material from a less evolved companion star in a close binary system. As shown in Fig. 1,under its typical temperature, the hydrogen burning in X-ray burst occurs from the hot CNO cycle:展开更多
Nuclear physics interacts with astrophysics, which not only expands its research space but also promotes the development of fundamental physics. Much attention has been paid to the equation of state (EOS) of isospin a...Nuclear physics interacts with astrophysics, which not only expands its research space but also promotes the development of fundamental physics. Much attention has been paid to the equation of state (EOS) of isospin asymmetric nuclear matter as the development of radioactive beam facilities and astronomical observation facilities. The symmetry energy that measures the isospin-dependence of the EOS is a quantity of critical importance due to its many-sided roles. However, its density dependence remains a great challenge because of the incomplete knowledge of the nuclear force and the complexity of many-body systems. Many important issues in nuclear astrophysics urgently require accurate knowledge about it at present.展开更多
Emerging evidence indicates that reprogramming of energy metabolism involving disturbances in energy production from a defect in cellular respiration with a shift to glvcolvsis is a core hallmark of cancer[1].
Because of the low cross-section for neutron capture and its excellent structural, chemical and mechanical stability, silicon carbide (SiC) is an important material with application in the development of nuclear energ...Because of the low cross-section for neutron capture and its excellent structural, chemical and mechanical stability, silicon carbide (SiC) is an important material with application in the development of nuclear energy and waste technologies. For example, in the fourth generation of fission reactors, such as high-temperature gas-cooled reactors and gas-cooled fast reactors, TRISO-coated particle fuel is designed, because this fuel is very robust with no failures anticipated during irradiation and under accident conditions.展开更多
In the recent decades,great attention has been paid on the heavy ion collisions under intermediate energy^([1～4]).Early studies mainly focused on the nuclear collisions under low and high energy^([5,6]).In low energy...In the recent decades,great attention has been paid on the heavy ion collisions under intermediate energy^([1～4]).Early studies mainly focused on the nuclear collisions under low and high energy^([5,6]).In low energy nuclear collisions,the behavior of the colliding nuclei is determined by their mean field,while in high energy nuclear collisions it is the collision of individual nucleons in the nuclei that determines the outcome of the reaction.展开更多
文摘Because ER stress is one of the signaling pathways involved in the regulation of autophagy, we hypothesized that ER stress might also play an important role in radiation-induced autophagy. SHG44 and HeLa cells were irradiated with X-rays and carbon ions of 30 and 75 keV/m at 2 Gy. The expression levels of Bip, a major indicator of UPR, at 4 and 24 h post-irradiation are shown in Fig. 1(a) and (b) for SHG44 and HeLa cells, respectively.
文摘A nuclear astrophysics experiment was performed at CRIB (CNS low-energy Radioactive-Ion Beam separator)on Mar. 2011. The goal of this experiment is to study the reaction rate of 18Ne(,p)21Na reaction, which mightbe a key breakout reaction from the hot CNO cycle to rp-process in X-ray burst and nova. Yet its reaction rate ispoorly known.Explosive hydrogen burning is thought to be the main source of energy generation and a source of nucleosynthesisin X-ray burst and nova[1;2]. For example, XRBs are characterized by a sudden increase of X-ray emission withinonly a few seconds to a total energy output of about 1040 ergs, which is observed to repeat with some regularity.The recurrence time for single bursts can range from hours to days at the typical temperature of 0.4～2 GK. Thebursts have been interpreted as being generated by thermonuclear runaway on the surface of a neutron star thataccretes H- and He-rich material from a less evolved companion star in a close binary system. As shown in Fig. 1,under its typical temperature, the hydrogen burning in X-ray burst occurs from the hot CNO cycle:
文摘Nuclear physics interacts with astrophysics, which not only expands its research space but also promotes the development of fundamental physics. Much attention has been paid to the equation of state (EOS) of isospin asymmetric nuclear matter as the development of radioactive beam facilities and astronomical observation facilities. The symmetry energy that measures the isospin-dependence of the EOS is a quantity of critical importance due to its many-sided roles. However, its density dependence remains a great challenge because of the incomplete knowledge of the nuclear force and the complexity of many-body systems. Many important issues in nuclear astrophysics urgently require accurate knowledge about it at present.
基金National Natural Science Foundation of China(11775280)Western Talents Program of Chinese Academy of Sciences(Y866020XB0)Natural Science Foundation of Gansu Province(18JR3RA391)。
文摘Emerging evidence indicates that reprogramming of energy metabolism involving disturbances in energy production from a defect in cellular respiration with a shift to glvcolvsis is a core hallmark of cancer[1].
文摘Because of the low cross-section for neutron capture and its excellent structural, chemical and mechanical stability, silicon carbide (SiC) is an important material with application in the development of nuclear energy and waste technologies. For example, in the fourth generation of fission reactors, such as high-temperature gas-cooled reactors and gas-cooled fast reactors, TRISO-coated particle fuel is designed, because this fuel is very robust with no failures anticipated during irradiation and under accident conditions.
文摘In the recent decades,great attention has been paid on the heavy ion collisions under intermediate energy^([1～4]).Early studies mainly focused on the nuclear collisions under low and high energy^([5,6]).In low energy nuclear collisions,the behavior of the colliding nuclei is determined by their mean field,while in high energy nuclear collisions it is the collision of individual nucleons in the nuclei that determines the outcome of the reaction.
