Background Since December 2019, when coronavirus disease 2019 (Covid-19) emerged in
Wuhan city and rapidly spread throughout China, data have been needed on the clinical …

The pandemic coronavirus infectious disease (COVID-19), caused by severe acute respiratory
syndrome coronavirus 2 (SARS-CoV-2), is rapidly spreading across the globe. In this …

Organic solar cells are composed of electron donating and accepting organic semiconductors.
Whilst a significant palette of donors has been developed over three decades, until …

… We also thank Li-qiang Wang, Wei-peng Cai and Zi-sheng Chen (Sixth Affiliated Hospital
of Guangzhou Medical University), Chang-xing Ou, Xiao-min Peng, Si-ni Cui, Yuan …

Objective To delineate the clinical characteristics of patients with coronavirus disease 2019 (covid-19)
who died. Design Retrospective case series. Setting Tongji Hospital in Wuhan, …

Graphene-based gas/vapor sensors have attracted much attention in recent years due to their
variety of structures, unique sensing performances, room-temperature working conditions, …

Mimicking human skin's functions to develop electronic skins has inspired tremendous efforts
in design and synthesis of novel soft materials with simplified fabrication methods. However…

Detecting and reading text from natural images is a hard computer vision task that is central
to a variety of emerging applications. Related problems like document character recognition …

Advances in theory and algorithms for electronic structure calculations must be incorporated
into program packages to enable them to become routinely used by the broader chemical …

Background Since December 2019, acute respiratory disease (ARD) due to 2019 novel
coronavirus (2019-nCoV) emerged in Wuhan city and rapidly spread throughout China. We …