Study of doubly strange systems using stored antiprotons

Bound nuclear systems with two units of strangeness are still poorly known despite their importance for many strong interaction phenomena. Stored antiprotons beams in the GeV range represent an unparalleled factory for various hyperon-antihyperon pairs. Their outstanding large production probability in antiproton collisions will open the floodgates for a series of new studies of systems which contain two or even more units of strangeness at the P‾ANDA experiment at FAIR. For the first time, high resolution γ-spectroscopy of doubly strange ΛΛ-hypernuclei will be performed, thus complementing measurements of ground state decays of ΛΛ-hypernuclei at J-PARC or possible decays of particle unstable hypernuclei in heavy ion reactions. High resolution spectroscopy of multistrange Ξ−-atoms will be feasible and even the production of Ω−-atoms will be within reach. The latter might open the door to the |S|=3 world in strangeness nuclear physics, by the study of the hadronic Ω−-nucleus interaction. For the first time it will be possible to study the behavior of Ξ‾+ in nuclear systems under well controlled conditions

Measuring sustainability of opioid agonist therapy programs in the context of transition from Global Fund support

Abstract Background Programmatic and financial sustainability of health responses dependent on donor funding has risen as a major concern. In the HIV field in particular, it generated a number of instruments and assessments on sustainability and processes related to donor transition planning. The authors aimed to develop an instrument specific to opioid agonist therapy (OAT) programs as they were addressed only marginally by the HIV-specific assessments. Methods The development of the OAT sustainability instrument used desk review of existing HIV sustainability concepts and tools, an International Advisory Board, and piloting to validate the instrument. Results The new OAT sustainability instrument is comprised of the three parts: the conceptual framework, methodological guidelines and a practical implementation tool for assessing the degree of OAT sustainability at the country level. It measures sustainability in the three broad areas for sustainability measuring–Policy & Governance; Finance & Resources; and Services. The selection of indicators and their composites for the three sustainability areas extensively used the United Nations and World Health Organization’s guidance on health system building blocks, on care and HIV and viral hepatitis prevention among people using opioids and for opioid dependence, and the definition of access to health framed by the United Nations Convent on Economic, Social and Cultural Rights. The instrument’s methodological guidelines require the engagement of a national consultant to conduct desk review, key informant interviews and focus groups for measuring discrete milestones and adding qualitative information for interpretation of the data, progress and opportunities. The guidelines advise engaging a country-specific multi-stakeholder advisory group for planning, validation and follow-up of the assessment. The pilot of the instrument in 3 countries in 2020 validated it and required minor adjustments in the instrument. By mid-2023, the instrument has been successfully applied in 5 countries. Conclusions The developed instrument enables a comprehensive review of the resilience of OAT programs and their ability to scale up and to inform a roadmap for improved sustainability. While developed in the context of Eastern Europe and Central Asia, it has been reviewed by a global advisory panel and could be easily adapted outside this regional context