Paramagnetic, near-infrared fluorescent Mn-doped PbS colloidal nanocrystals

Mn-doped PbS colloidal nanocrystals in aqueous solution are paramagnetic and optically active in the technologically important biological window between 1.2 and 0.8 μm. Cytoxicity studies show that exposure of human cell lines to the nanoparticles at concentrations up to 0.2 mg mL−1 does not induce any adverse effect

The Eurasian Modern Pollen Database (EMPD), version 2

The Eurasian (née European) Modern Pollen Database (EMPD) was established in 2013 to provide a public database of high-quality modern pollen surface samples to help support studies of past climate, land cover, and land use using fossil pollen. The EMPD is part of, and complementary to, the European Pollen Database (EPD) which contains data on fossil pollen found in Late Quaternary sedimentary archives throughout the Eurasian region. The EPD is in turn part of the rapidly growing Neotoma database, which is now the primary home for global palaeoecological data. This paper describes version 2 of the EMPD in which the number of samples held in the database has been increased by 60 % from 4826 to 8134. Much of the improvement in data coverage has come from northern Asia, and the database has consequently been renamed the Eurasian Modern Pollen Database to reflect this geographical enlargement. The EMPD can be viewed online using a dedicated map-based viewer at https://empd2.github.io and downloaded in a variety of file formats at https://doi.pangaea.de/10.1594/PANGAEA.909130 (Chevalier et al., 2019)Swiss National Science Foundation | Ref. 200021_16959

The Eurasian Modern Pollen Database (EMPD), version 2

The Eurasian (nee European) Modern Pollen Database (EMPD) was established in 2013 to provide a public database of high-quality modern pollen surface samples to help support studies of past climate, land cover, and land use using fossil pollen. The EMPD is part of, and complementary to, the European Pollen Database (EPD) which contains data on fossil pollen found in Late Quaternary sedimentary archives throughout the Eurasian region. The EPD is in turn part of the rapidly growing Neotoma database, which is now the primary home for global palaeoecological data. This paper describes version 2 of the EMPD in which the number of samples held in the database has been increased by 60% from 4826 to 8134. Much of the improvement in data coverage has come from northern Asia, and the database has consequently been renamed the Eurasian Modern Pollen Database to reflect this geographical enlargement. The EMPD can be viewed online using a dedicated map-based viewer at https://empd2.github.io and downloaded in a variety of file formats at https://doi.pangaea.de/10.1594/PANGAEA.909130 (Chevalier et al., 2019).Peer reviewe

The Eurasian Modern Pollen Database (EMPD), version 2

Abstract. The Eurasian (née European) Modern Pollen Database (EMPD) was established in 2013 to provide a public database of high-quality modern pollen surface samples to help support studies of past climate, land cover, and land use using fossil pollen. The EMPD is part of, and complementary to, the European Pollen Database (EPD) which contains data on fossil pollen found in Late Quaternary sedimentary archives throughout the Eurasian region. The EPD is in turn part of the rapidly growing Neotoma database, which is now the primary home for global palaeoecological data. This paper describes version 2 of the EMPD in which the number of samples held in the database has been increased by 60 % from 4826 to 8134. Much of the improvement in data coverage has come from northern Asia, and the database has consequently been renamed the Eurasian Modern Pollen Database to reflect this geographical enlargement. The EMPD can be viewed online using a dedicated map-based viewer at https://empd2.github.io and downloaded in a variety of file formats at https://doi.pangaea.de/10.1594/PANGAEA.909130 (Chevalier et al., 2019).</jats:p

Nanosondes bimodales pour l'imagerie médicale par résonance magnétique et par fluorescence optique (synthèse, caractérisation et évaluation de leur toxicité in vitro)

PARIS7-Bibliothèque centrale (751132105) / SudocSudocFranceF

Aluminum-doped Zinc Oxide Nanoparticles Sensing Properties Enhanced by Ultraviolet Light

International audienceThe development of room-temperature gas sensors for nitrogen dioxide gases is of great importance for air quality monitoring due to unhealthy impact on human life and environment. In this work, we focus on Aluminum-doped Zinc Oxide sensing properties. We compare nitrogen dioxide detection at room temperature in dark and under ultraviolet or blue illuminations. Working temperature from 25°C up to 100°C have been also performed in dark and under UV and blue Light Emitted Diodes. Aluminum-doped Zinc Oxide nanoparticles have been deposited by drop coating from colloidal solution as sensitive layer for air quality monitoring on Si/SiO2 substrate. Herein, a brief description of the process steps will be provided. We demonstrate that UV light and temperature enhance gas-sensing properties with good reversibility and repeatability

Aluminum-doped Zinc Oxide Nanoparticles Sensing Properties Enhanced by Ultraviolet Light

International audienceThe development of room-temperature gas sensors for nitrogen dioxide gases is of great importance for air quality monitoring due to unhealthy impact on human life and environment. In this work, we focus on Aluminum-doped Zinc Oxide sensing properties. We compare nitrogen dioxide detection at room temperature in dark and under ultraviolet or blue illuminations. Working temperature from 25°C up to 100°C have been also performed in dark and under UV and blue Light Emitted Diodes. Aluminum-doped Zinc Oxide nanoparticles have been deposited by drop coating from colloidal solution as sensitive layer for air quality monitoring on Si/SiO2 substrate. Herein, a brief description of the process steps will be provided. We demonstrate that UV light and temperature enhance gas-sensing properties with good reversibility and repeatability

Pollen distribution in surface sediments of the northern Lower Medjerda valley (northeastern Tunisia)

International audienc