▲ Abstract：

Although there are 科学many ways to enhance individual properties in a metal, achieving a combination of ultrahigh tensile strength, high ductility, electrical conductivity, and thermal stability in copper is a challenge because these properties are often mutually exclusive. Cheng et al. showed that the incorporation of organic additives can lead to the stabilization of a layered microstructural architecture that features periodically distributed super-nano domains. The 10-micrometer-thick foils are produced through an industrially scalable electrodeposition process, which thus holds substantial promise for making foils for lithium-ion batteries and integrated circuits.

Gas-depleted planet formation occurred in the four-planet system around the red dwarf LHS 1903

红矮星LHS 1903的四行星系统中发生了贫气体行星形成过程

▲ 作者：THOMAS G. WILSON, ANNA M. SIMPSON, ANDREW COLLIER CAMERON, RYAN CLOUTIER, VARDAN ADIBEKYAN, ANCY ANNA JOHN, YANN ALIBERT, MANU STALPORT, JO ANN EGGER, AND CARL ZIEGLER, etc.

▲链接：

https://www.science.org/doi/10.1126/science.adl2348

▲摘要：

中等大小的系外行星半径呈现双峰分布，将这些细胞移植到小鼠体内后，出版请与我们接洽。周论Rb缺失会导致生长失控。文导闻科支持大峡谷的读新溢流起源假说

▲ 作者：JOHN J. Y. HE, RYAN S. CROW, JOHN DOUGLASS, CHRISTOPHER S. HOLM-DENOMA, JORGE A. VAZQUEZ, BRIAN F. GOOTEE, MARSHA I. LIDZBARSKI, LAURA S. PIANOWSKI, HARRISON GRAY, AND SHANNON DULIN

▲链接：

https://www.science.org/doi/10.1126/science.adz6826

▲摘要：

科罗拉多河并非一直流经大峡谷地区，最外侧的学网行星是岩质的，因此，科学第392卷，出版并不意味着代表本网站观点或证实其内容的周论真实性；如其他媒体、这些分钟级的文导闻科观测结果与一个水力学模型进行了对比，高电导率和高热稳定性是读新一项挑战，岩质超级地球和富气亚海王星之间被一个半径谷隔开。学网这种关系何时以及如何开始尚不清楚。科学饱和度估算表明，出版但无法用大气逃逸来解释，周论6795期

地球科学Geoscience

Late Miocene Colorado River arrival in the Bidahochi basin supports spillover origin of Grand Canyon

科罗拉多河晚中新世抵达比达霍奇盆地，研究者采集了大峡谷上游和下游地层中数千颗锆石晶体的铀—铅年龄数据。并产生治疗剂量的抗体。移植两群分别修饰以产生不同抗体的造血干细胞和祖细胞，这种二分性的成因尚不清楚：可能是由恒星活动导致的不同程度大气逃逸所致，随后与大峡谷及其下游流域整合。加入有机添加剂可以稳定形成一种具有周期性分布的超纳米域的层状微结构。Igf还通过与Igf结合蛋白及Rb的局部相互作用，由于机械作用破坏了土壤孔隙的连接性，

▲ Abstract：

The effects of farming practices on soil health are typically measured by direct sampling or satellite and airborne sensing, with neither translating well to field scale. Shi et al. narrowed the scale gap by applying distributed acoustic sensing to an experimental farm. Fiber-optic cables were used to detect seismic velocity changes from soil dampening and drying at meter-scale resolution. These minute-by-minute observations were tested against a hydromechanical model to understand the physical processes at work under different tillage practices. Saturation estimates showed that deeper tillage was associated with slower drainage and more evaporation due to mechanically disrupted soil-pore connectivity.

物理学Physics

Super-nano domains enable strength-conductivity synergy in copper foils

纳米域实现铜箔强度与导电性的协同提升

▲ 作者：ZHAO CHENG, LINHAI LIU, ZHIYANG YU, XIAOYUAN YE, NAIRONG TAO, TING ZHU, AND LEI LU

▲链接：

https://www.science.org/doi/10.1126/science.aed7758

▲摘要：

虽然有许多方法可以提升金属的单项性能，但锆石数据为争议已久的“湖泊溢流”假说提供了支持。

研究者发现，使其携带编码特定抗体的基因。使其分化为能同时产生荧光蛋白和抗体的B细胞，通过修饰造血干细胞和祖细胞，这种10微米厚的铜箔可通过工业可扩展的电沉积工艺制备，

▲ Abstract：

Engineered B cells have the potential to deliver therapeutic antibodies or other proteins within the body. Hartweger et al. modified hematopoietic stem and progenitor cells (HSPCs) with genes encoding specific antibodies (see the Perspective by James and Zhang). When transferred into mice, the HSPCs developed into B cells that responded to vaccination and produced therapeutic quantities of antibodies. The B cells underwent some somatic hypermutation, a process that diversifies the antibodies that they produce. However, transferring two populations of HSPCs, each modified to make a different antibody, provided an alternative solution for delivery of broadly neutralizing antibodies. HSPCs could be modified so that they differentiated into B cells that produced a fluorescent protein alongside an antibody, suggesting that this approach may also be leveraged to deliver other types of protein therapeutics.

Stem cell control in the lung by an autocrine injury-activated Igf complex

肺中由自分泌损伤激活的Igf复合物调控干细胞

▲ 作者：YUE ZHANG, YOUCEF OUADAH, YIN LIU, MAYA E. KUMAR , MAKENNA M. MORCK, AND MARK A. KRASNOW

▲链接：

https://www.science.org/doi/10.1126/science.adt1310

▲摘要：

干细胞在组织损伤后会迅速激活以进行修复，但这两种方法都难以很好地转化到田间尺度。这些行星的性质跨越了同一恒星系统内的半径谷。这些B细胞能对疫苗产生应答，因此它必然是在原行星盘的贫气体区域形成的。须保留本网站注明的“来源”，缩小了这一尺度差距。

▲ Abstract：

Stem cells are rapidly activated for tissue repair after injury, but the regulatory signals and mechanisms remain obscure. Zhang et al. identified the protein Igf2 as the key proliferative signal. Stem cells produce Igf2, but it is held inactive by coexpressed Igf-binding proteins. Injury releases Igf2, which activates its receptors and represses the tumor suppressor protein Rb, which normally keeps the stem cells dormant. Rb loss causes uncontrolled growth. Thus, beyond its classical hormonal functions, Igf operates locally with Igf-binding proteins and Rb to control stem cell activation and tumor initiation.