Monolithic integrated micro-supercapacitors with ultra-high systemic volumetric performance and areal output voltage

Monolithic integrated micro-supercapacitors(MIMSCs) with high systemic performance and cell-number density are important for miniaturized electronics to empower the Internet of Things.However,fabrication of customizable MIMSCs in an extremely small space remains a huge challenge considering key factors such as materials selection,electrolyte confinement,microfabrication and device-performance uniformity.Here,we develop a universal and large-throughput microfabrication strategy to address all the...     

The temporal dynamics of antimicrobial-resistant Salmonella enterica and predominant serovars in China

Salmonella enterica is one of the most common bacterial pathogens in humans and animals.Systematic studies on the trends and geographical distribution of antimicrobial-resistant Salmonella and dominant serovars have been well studied in European and American countries while not in China.Here,taking the One-Health strategy,we used>35 000 Salmonella enterica isolates to explore the temporal and spatial dynamics of dominant serovars in China.We found that Salmonella Typhimurium was the dominant ...     

Glacial expansion of cold-tolerant species in low latitudes: megafossil evidence and species distribution modellingOA

<正>The Pleistocene was a time of repeated glaciations that severely affected the land biota over large areas of Eurasia and North America. Drastic climatic fluctuations during the Pleistocene drove largescale extinctions, migrations and diversification in plant and animal populations.These dramatic processes had a strong impact on the distribution of modern flora and fauna.     

Association of physical activity with risk of chronic kidney disease in China:A population-based cohort study

Background:Information on the association between physical activity(PA) and the risk of chronic kidney disease(CKD) is limited.We aimed to explore the associations of total,domain-specific,and intensity-specific PA with CKD and its subtypes in China.Methods:The study included 475,376 adults from the China Kadoorie Biobank aged 30-79 years during 2004-2008 at baseline.An interviewer-administered questionnaire was used to collect the information about PA,which was quantified as metabolic equivalen...     

Learning physical characteristics like animals for legged robotsOA

Physical characteristics of terrains,such as softness and friction,provide essential information for legged robots to avoid non-geometric obstacles,like mires and slippery stones,in the wild.The perception of such characteristics often relies on tactile perception and vision prediction.Although tactile perception is more accurate,it is limited to close-range us e;by contrast,establishing a supervised or self-supervised contactless prediction system using computer vision re quires adequate labele...     

China's space robotics for on-orbit servicing: the state of the artOA

<正>Since the pioneering deployment of Canadarm in 1981,various on-orbit servicing (OOS) concepts have been flourishing and are continuously demonstrated by space agencies worldwide[1].This novel access to extend human curiosity in space is empowered by the remarkable OOS progress achieved by missions like the Robot Technology Experiment (ROTEX),Engineering Test Satellite-Ⅶ(ETS-Ⅶ),     

In situ electrochemical reconstruction of Sr2Fe1.45Ir0.05Mo0.5O6-δ perovskite cathode for CO2 electrolysis in solid oxide electrolysis cells

Solid oxide electrolysis cells provide a practical solution for the direct conversion of CO₂ to other chemicals(i.e.CO),however,an in-depth mechanistic understanding of the dynamic reconstruction of active sites for perovskite cathodes during CO2 electrolysis remains a great challenge.Herein,we identify that iridium-doped Sr₂Fe_1.45Ir_0.05Mo_0.5O_6-δ(SFIrM) perovskite displays a dynamic electrochemical reconstruction feature during CO...     

Calibration of local chemical pressure by optical probe

Chemical stabilization of a high-pressure metastable state is a major challenge for the development of advanced materials.Although chemical pressure(P_chem) can effectively simulate the effect of physical pressure(P_phy)) experimental calibration of the pressure passed to local structural motifs,denoted as local chemical pressure(P_chem-△) which significantly governs the function of solid materials,remains absent due to the challenge of probing techniques.Here we es...     

Clinicopathological and immunological features of new onset kidney disease: a rare event after SARS-CoV-2 vaccinationOA

The onset of various kidney diseases has been reported after severe acute respiratory syndrome coronavirus2(SARS-CoV-2) vaccination.However,detailed clinical and pathological features are lacking.We screened and analyzed patients with newly diagnosed kidney diseases after inactivated SARS-CoV-2 vaccination in Peking University First Hospital from January 2021 to August 2021,and compared them with the reported cases in the literature.We obtained samples of blood,urine and renal biopsy tissues.Cli...     

Inhibition of Wnt activity improves peri-implantation development of somatic cell nuclear transfer embryos

Somatic cell nuclear transfer(SCNT) can reprogram differentiated somatic cells into totipotency.Although pre-implantation development of SCNT embryos has greatly improved,most SCNT blastocysts are still arrested at the peri-implantation stage,and the underlying mechanism remains elusive.Here,we develop a 3D in vitro culture system for SCNT peri-implantation embryos and discover that persistent Wnt signals block the naive-to-primed pluripotency transition of epiblasts with aberrant H3K27me3 occup...