Practical quantum advantage in quantum simulation.

The development of quantum computing across several technologies and platforms has reached the point of having an advantage over classical computers for an artificial problem, a point known as 'quantum advantage'. As a next step along the development of this technology, it is now important to discuss 'practical quantum advantage', the point at which quantum devices will solve problems of practical interest that are not tractable for traditional supercomputers. Many of the most promising short-term applications of quantum computers fall under the umbrella of quantum simulation: modelling the quantum properties of microscopic particles that are directly relevant to modern materials science, high-energy physics and quantum chemistry.

The Potyviral Protein 6K1 Reduces Plant Proteases Activity during Infection.

Potyviral genomes encode just 11 major proteins and multifunctionality is associated with most of these proteins at different stages of the virus infection cycle. Some potyviral proteins modulate phytohormones and protein degradation pathways and have either pro- or anti-viral/insect vector functions. Our previous work demonstrated that the potyviral protein 6K1 has an antagonistic effect on vectors when expressed transiently in host plants, suggesting plant defenses are regulated.

Many-Body Quantum State Diffusion for Non-Markovian Dynamics in Strongly Interacting Systems.

Capturing non-Markovian dynamics of open quantum systems is generally a challenging problem, especially for strongly interacting many-body systems. In this Letter, we combine recently developed non-Markovian quantum state diffusion techniques with tensor network methods to address this challenge. As a first example, we explore a Hubbard-Holstein model with dissipative phonon modes, where this new approach allows us to quantitatively assess how correlations spread in the presence of non-Markovian dissipation in a 1D many-body system.

Administration of Venous Thromboembolism Chemoprophylaxis Within 12 Hours of Pelvic and Acetabular Surgery Has No Effect on Estimated Blood Loss, Perioperative Change in Hemoglobin, or Need for Transfusion.

Objective: To determine if preoperative administration of venous thromboembolism (VTE) chemoprophylaxis (PPx) before pelvic and acetabular fracture surgery affects estimated blood loss (EBL), perioperative change in hemoglobin (ΔHgb), or transfusion rates.

Design: Retrospective cohort study.

Setting: Level 1 trauma center, southeastern United States.

Content analysis of reported activities of the United Nations Road Safety Collaboration Members during the Decade of Action for Road Safety 2011-2020.

Objective: Several activities were planned for the Decade of Action (DOA) for Road Safety 2011-2020, covering key policies and interventions on road safety. Knowledge of the activities implemented by key actors is currently lacking in the literature. This study answers the question: what activities were implemented during the DOA by the United Nations Road Safety Collaboration (UNRSC) members?

Design: The study used content analysis techniques to extract and analyse information from five United Nations Secretary General's reports, which summarise the activities reported by UNRSC members.