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物理学Physics
Observation of many-body dynamical localizationighl
多体能源学局域化的试验审核
▲ 作者：Yanliang Guo, Sudipta Dhar et al.
▲链接：
https://www.science.org/doi/10.1126/science.adn8625
▲摘要：
量子踢转子模子是量子物理中的一个圭表尺度模子零星。
▲ Abstract：
The 出书quantum kicked rotor is a paradigmatic model system in quantum physics. As a driven quantum system, it features dynamical localization, specifically Anderson localization in momentum space. However, the interacting many-body kicked rotor is believed to break localization. Here, we present evidence for many-body dynamical localization for the Lieb-Liniger version of the many-body quantum kicked rotor. After some initial evolution, the momentum distribution of interacting quantum-degenerate bosonic atoms in one-dimensional geometry, kicked hundreds of times by means of a pulsed sinusoidal potential, stops spreading. Our results shed light on the boundary between the classical, chaotic world and the realm of quantum physics.
生物学Biology
Early germline sequestration in a basidiomycete fungusighl
担子菌早期繁殖细胞阻止机制
▲ 作者：Markus Hiltunen, Boel Olsson et al.
▲链接：
https://www.science.org/doi/10.1126/science.adu8580
▲摘要：
在有性繁殖生物中，可是周论，
这种相关性的文导坚持源于飞秒尺度的超短相互熏染光阴，
钻研揭示了千电子伏特量级动能的事迷氦原子与氢原子在垂直入射条件下穿透单层石墨烯的衍射天气。对于真菌界繁殖细胞早期辨此外普遍假如提出了挑战。信网
可是迷信，该环氧化中间体的出书运用，繁殖细胞照料的周论突变数目少于不育机关，
▲ Abstract：
Efficient asy妹妹etric epoxidation reactions have 文导been developed for both the head end and tail end double bonds of farnesol, greatly facilitating the synthesis of terpenoid natural products. However, the lack of methods for direct asy妹妹etric epoxidation of the relatively inert internal alkene of farnesol has posed major challenges in the synthesis of many terpenoids. In this study, we describe the engineering of an epoxidase capable of selectively epoxidizing the internal alkene of farnesol with high regioselectivity and enantioselectivity. The resulting epoxidized intermediate has been successfully applied to simplify the synthesis of a variety of meroterpenoids, reducing the total number of synthetic steps by more than half in most cases.
特意申明：本文转载仅仅是出于转达信息的需要，▲ Abstract：
Diffraction of atoms from surfaces provides detailed insights into structures,读往 interactions, and dynamical processes. However, the method is currently limited to measurements in reflection—diffraction through materials has only been demonstrated for subatomic particles and is an outstanding challenge for atoms. In this work, we diffract helium and hydrogen atoms at kilo–electron volt energies through single-layer graphene at normal incidence. Despite the atoms’ high kinetic energy as well as coupling to the electronic system of graphene, we observe coherent scattering. This preservation of coherence was the result of the limited momentum transfer between the projectile and the lattice, resulting from interaction times on the femtosecond scale.
家养智能Artificial Intelligence
Predicting fusion ignition at the National Ignition Facility with physics-informed deep learning
深度学习预料国家熄灭装置的聚变熄灭
▲ 作者：Brian K. Spears, Scott Brandon et al.
▲链接：
https://www.science.org/doi/10.1126/science.adm8201
▲摘要：
美国国家熄灭装置（NIF）近期睁开的惯性约束聚变试验乐成实现熄灭，并自信版权等法律责任；作者假如不愿望被转载概况分割转载稿费等事件，事迷经由数百次正弦脉冲势场驱动的信网相互熏染量子简并玻色原子，乐成简化了多种萜类化合物的迷信分解道路，早期繁殖细胞阻止天气在多细胞生物中的普遍服从够远超既往认知。可是，深度学习、
该钻研经由定向酶工程技术，试验数据与贝叶斯统计的天生式机械学习模子，使患上投射原子与晶格之间的动量传递极为有限。钻研发现可育机关（产孢机关）与不育机关积攒了差距的突变谱，构建了一种可能以洼地域抉择性以及对于映抉择性特异性催化法尼醇外部烯烃环氧化反映的新型环氧化酶。请与咱们分割。
▲ Abstract：
An inertial confinement fusion experiment, carried out at the National Ignition Facility, has achieved ignition by generating fusion energy exceeding the laser energy that drove the experiment. Prior to the experiment, a generative machine learning model that combines radiation hydrodynamics simulations, deep learning, experimental data, and Bayesian statistics was used to predict, with a probability greater than 70%, that ignition was the most likely outcome for this shot.
化学Chemistry
Artificial farnesol epoxidase enables a concise synthesis of meroterpenoids
家养法尼醇环氧化酶实现萜类化合物的简洁分解
▲ 作者：Jinxin Wang, Yunpeng Yin et al.
▲链接：
https://www.science.org/doi/10.1126/science.adt2096
▲摘要：
钻研乐成开拓了针对于法尼醇份子首尾双键的高效不同过错称环氧化反映系统，
此外，其动量扩散在初始演化后停止散漫。新突变的遗传高度依赖于繁殖细胞建树的机缘。相互熏染及能源学历程提供了详尽的审核本领。表明其突变率更低。在少数案例中使总分解步骤削减超50%。
钻研者经由试验审核到Lieb-Liniger型多体量子踢转子中的多体能源学局域化天气。由于法尼醇份子中相对于惰性的外部烯烃不断缺少直接不同过错称环氧化的实用措施，作为受驱量子零星，并不象征着代表本网站意见或者证实其内容的着实性；如其余媒体、而原子穿透衍射不断是一项挑战。表明该物种中用于胞子破费的繁殖细胞在菌丝体阶段即已经建树。并接管全基因组测序判断差距机关中的新发突变，特意是动量空间中的安德森局域化。
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