点击科学

2024-12-16 00:00:00
中国科技教育 2024年10期

2024-08-16

封面图展示的是2021年7 月11 日, 球迷们正在观看2020 年欧洲杯决赛。位于英格兰和威尔士的数字接触者追踪系统发现,在两国各自的比赛日,传输数值异常高,这归因于球迷们会聚集在家中、酒吧及体育场。这种低成本技术可以快速准确地衡量流行病传播的关键驱动因素。

Football fans watch theUEFA Euro 2020 Championshipfinal on 11 July 2021. Digitalcontact tracing in England andWales detected unusually highnumbers of transmissions onthe nations’ respective matchdays, attributable to supportersgathering in homes and pubs aswell as in stadiums. This lowcosttechnology can quickly andaccurately measure key driversof epidemic spread.

2024-08-23

封面图展示的是2024年日本能登地区地震后的景象,该次地震震级约为7.5 级,导致能登半岛和日本中部地区发生大面积地面震动。地震发生后,包括日本石川县珠洲市新町地区在内的多处房屋受损。造成地震的断层系统以复杂的方式破裂,引发了一场毁灭性的事件。

The 2024 Noto earthquake,with a magnitude of about 7.5,resulted in a large amount ofground shaking across the NotoPeninsula and Central Japan.Consequences included damagedhouses in the Shinmachi district,S u z u , I s h i k a w a , J a p a n . T h efault system responsible for theearthquake ruptured in a complexmanner, generating a devastatingevent.

2024-08-30

由于染色体分离异常,在肿瘤细胞中经常可以观察到微核的存在。马丁等人与迪·博纳等人研究了微核崩塌所涉及的细胞过程。封面插图展示了活性氧(金色发光部分)附近的线粒体(金色卵形体部分)将其释放出来后,如何通过帮助募集自噬受体p62(红色)促进微核膜(灰色)的崩塌。

Micronuclei are frequentlyobserved in tumor cells as aresult of aberrant chromosomalseparation. Martin et al . and DiBona et al . studied the cellularprocesses involved in micronuclearcollapse. The illustration showsh ow r e a c t i v e o x y g e n s p e c i e s(gold glow) released by nearbym i t o c h o n d r i a ( g o l d o v o i d s )p r o m o t e t h e b r e a k d o w n o fmicronuclear envelopes (gray) byhelping to recruit the autophagicreceptor p62 (red).

封面图展示的是一只山雀从配备无线射频识别设备(RFID)的喂鸟器中得到了一颗葵花籽作为奖励。内华达山脉的研究人员利用这些智能喂鸟器,测试那些会囤积食物的野生山雀的空间认知能力。他们的研究表明,空间认知能力更强的个体山雀寿命更长。

A m o u n t a i n c h i c k a d e e(Poecile gambeli ) is rewarded witha sunflower seed from a radiofrequency identification (RFID)-equipped bird feeder. Researchersin the Sierra Nevada used these“smart” bird feeders to testthe spatial cognitive abilities offood-caching chickadees in thewild. Their research shows thatindividual mountain chickadeesw i t h b e t t e r s p a t i a l c o g n i t i v eabilities live longer lives.

(陶 陶 编译)