Social health recommender system: application for healthcare and pandemia information diffusion

The amount of information and services available on the web represents an important opportunity for people to enrich and share knowledges. The easy access and the continuous growth of data in the web are responsible of an overload of information that leads the user to navigate in a saturated and often uninteresting and non-comprehensive environment. In the medical-clinical context, a lot of information on the web is often incomplete, inaccurate or completely wrong due to an incorrect sharing and a lack of control of the sources. In this context, recommendation systems become essential to filter truthful information and to target users with respect to their needs. The status of recent covid-19 pandemic highlighted the necessity of having health reliable sources. Health recommender systems support user in medical environment to find right information. In this contribution, we report about a project of health recommender system aiming to: (i) aggregate similar users and (ii) guarantee the truthful and quality of the extracted information through a check of the sources and a validation by the medical scientific community

Zygotic and nucellar embryo survival following dehydration and cryopreservation of citrus intact seeds

A cryopreservation procedure by dehydration and direct immersion in liquid nitrogen was developed for seeds of four polyembryonic Citrus species, and the sexual or nucellar origin of the recovered seedlings was investigated. Seeds of three species could be desiccated in a sterile air flow to 16% (C. sinensis) or 10% (C. aurantium and C. limon) moisture content with a negligible reduction in germination levels. Differently, the germinability of C. deliciosa seeds dropped to 50% after drying to 15% moisture content. Following dehydration treatments, a reduction in the average number of seedlings per germinated seed was always observed. However, all four species benefited from desiccation in terms of protection during immersion in liquid nitrogen, with C. sinensis and C. aurantium showing the greatest survival (93% germination) after cryopreservation. The Inter-Simple Sequence Repeat analysis of seedlings recovered from cryopreserved seeds showed that the dehydration/cryopreservation procedure promotes the germination of zygotic embryos and reduces the number of apomictic seedlings per seed