The synthesis and characterization of the metal-free polyazido compounds 3,6-bis-(2-(4,6-diazido-1,3,5-triazin-2-yl)-hydrazinyl)-1,2,4,5-tetrazine (2) and 3,6-bis-(2-(4,6-diazido-1,3,5-triazin-2-yl)-diazenyl)-1,2,4,5-tetrazine (4) are presented. Two compounds were characterized by NMR spectra, IR spectroscopy, mass spectrometry, and differential scanning calorimetry (DSC). Additionally, the structure of 2 was confirmed by single-crystal X-ray diffraction. Compounds 2 and 4 exhibit measured densities (1.755 g cm and 1.763 g cm ), good thermal stabilities (194 °C and 189 °C), high heat of formation (2114 kJ mol and 2820 kJ mol ), and excellent detonation performance (D, 8365 m s and 8602 m s ; P, 26.8 GPa and 29.4 GPa). Furthermore, compounds 2 and 4 have been tested for their priming ability to detonate RDX. The results indicate that the title compound 2 is a potential environmentally friendly alternative candidate to lead-based primary explosives.

In most countries, the demand for integrated care for people with chronic diseases is increasing as the population ages. This demand requires a fundamental shift of health-care systems towards more integrated service delivery models. To achieve this shift in China, the World Health Organization, the World Bank and the Chinese government proposed a tiered health-care delivery system in accordance with a people-centred integrated care model. The approach was pioneered in Luohu district of Shenzhen city from 2015 to 2017 as a template for practice. In September 2017, China’s health ministry introduced this approach to people-centred integrated care to the entire country. We describe the features of the Luohu model in relation to the core action areas and implementation strategies proposed and we summarize data from an evaluation of the first two years of the programme. We discuss the challenges faced during implementation and the lessons learnt from it for other health-care systems. We consider how to improve collaboration between institutions, how to change the population’s behaviour about using community health services as the first point of contact and how to manage resources effectively to avoid budget deficits. Finally, we outline next steps of the Luohu model and its potential application to strengthen health care in other urban health-care systems.

As part of its Paris Agreement commitment, China pledged to peak carbon dioxide (CO 2) emissions around 2030, striving to peak earlier, and to increase the non-fossil share of primary energy to 20% by 2030. Yet by the end of 2017, China emitted 28% of the world's energy-related CO 2 emissions, 76% of which were from coal use. How China can reinvent its energy economy cost-effectively while still achieving its commitments was the focus of a three-year joint research project completed in September 2016. Overall, this analysis found that if China follows a pathway in which it aggressively adopts all cost-effective energy efficiency and CO 2 emission reduction technologies while also aggressively moving away from fossil fuels to renewable and other non-fossil resources, it is possible to not only meet its Paris Agreement Nationally Determined Contribution (NDC) commitments, but also to reduce its 2050 CO 2 emissions to a level that is 42% below the country's 2010 CO 2 emissions. While numerous barriers exist that will need to be addressed through effective policies and programs in order to realize these potential energy use and emissions reductions, there are also significant local environmental (e.g., air quality), national and global environmental (e.g., mitigation of climate change), human health, and other unquantified benefits that will be realized if this pathway is pursued in China.

A nitrogen‐rich energetic salt containing the longest reported nitrogen chain (N11), was obtained by an azo coupling reaction from 1,5‐diaminotetrazole. This is the first example of an azo reaction between an NNH2 diazonium salt and an amine derivative. The product structure was confirmed by X‐ray crystallography, and its physical and explosive properties were characterized.