UV-A to UV-B electroluminescence of core-shell GaN/AlGaN wire heterostructures

A UV-B-specific signaling component orchestrates plant UV protection.

UV-B radiation in sunlight has diverse effects on humans, animals, plants, and microorganisms. UV-B can cause damage to molecules and cells, and consequently organisms need to protect against and repair UV damage to survive in sunlight. In plants, low nondamaging levels of UV-B stimulate transcription of genes involved in UV-protective responses. However, remarkably little is known about the un...

Study of the ratios UV-A/UV-B from UV irradiance spectra

Growth and development responses to UV-B exclusion in crops

UV-B radiation affects crop plants. Growing interest has been shown in studying the effectsof UV-B radiation exclusion on crops since 1993. This article summarized the generalconsequences of UV-B radiation exclusion on crop plants from the aspacts of plant morphology,growth and development. UV-B exlusion has promoting effects on plant height, internodeand leaf size. UV-B exclusion increases roo...

CdS/ZnS core-shell nanocrystal photosensitizers for visible to UV upconversion.

Herein we report the first example of nanocrystal (NC) sensitized triplet-triplet annihilation based photon upconversion from the visible to ultraviolet (vis-to-UV). Many photocatalyzed reactions, such as water splitting, require UV photons in order to function efficiently. Upconversion is one possible means of extending the usable range of photons into the visible. Vis-to-UV upconversion is ac...

Molecular responses of plants to solar UV-B and UV-A radiation