While you can pay for subscriptions and licenses, the best free PDF editor offers all the core tools you need to create and manage documents without paying anything. My team and I have extensively ...

In my experience, the best PDF editor comes packed with a full suite of features to streamline document creation and management, from clever design tools to security redaction features.

Key Laboratory of Precision and Intelligent Chemistry, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of ...

A total of 88 soil samples were collected from agricultural fields spanning the main cereal-producing areas of China, including 36 black soils in Northeast China, 22 fluvo-aquic soils in the North ...

First came Tetris, then Doom – and now a bare-bones Linux instance that boots inside a PDF. Yes, the humble PDF – thanks to its ability to run limited JavaScript – has been coaxed into booting a ...

Article subjects are automatically applied from the ACS Subject Taxonomy and describe the scientific concepts and themes of the article.

Calf thymus DNA (CT-DNA), pBR322 DNA, ethidium bromide (EB) solution, and albumin human serum (HSA) were purchased from Solarbio (Beijing, China). DMEM medium, fetal bovine serum, ...

Trypanosomes are single-celled parasites that infect a range of animal hosts. These parasites need a molecule called haem to grow properly and are mostly spread by insects that feed on the blood of ...