Xinyin Zhang

Abstract Objectives This study examined the relationship between childhood mental health conditions and incident major depression in middle-aged and older adults. Method This longitudinal panel study used 12 years of data from 27,220 adults aged 51 and older in the U.S. Health and Retirement Study. Childhood mental health conditions were assessed retrospectively with a question about having a depression, drug/alcohol, or other emotional problem before age 16.

Introduction Ectomycorrhizal (ECM) fungi form symbiotic relationships with the roots of most temperate and boreal forest trees, enhancing host fitness by improving soil nutrient acquisition, particularly N and phosphorus (Martin & van der Heijden, 2024). This mutualistic association is essential for plant nutrient-use efficiency in nutrient-limited ecosystems and plays a fundamental role in forest productivity and C cycling (Smith & Read, 2008).

Synthesis of α-ketoamides via oxidative amidation of Diazo Compounds with O-benzoyl hydroxylamines as Nitrogen Source and Oxidant An simple, efficient method for the construction of an array of α-ketoamides has been described from readily available O-benzoyl hydroxylamines and diazo compounds as starting materials by the combined use of CuI as a catalyst and H2O as oxygen source.