Results 61 to 70 of about 80,895 (359)

Ambient new particle formation parameter indicates potential rise in future events [PDF]

, 2009
Atmospheric new particle formation is a general phenomenon observed over coniferous forests. So far nucleation is described as a function of gaseous sulfuric acid concentration only, which is unable to explain the observed seasonality of nucleation ...
Bonn, Boris, Borchert, Sebastian, Boy, Michael, Groth, Angela, Jacobi, Stefan, Kulmala, Markku, Trawny, Katrin   +6 more
core   +1 more source

Inhibition of RACK1‐Mediated NLRP3 Oligomerization (Active Conformation) Ameliorates Acute Respiratory Distress Syndrome

Advanced Science, EarlyView.
Schematic diagram showing the potential mechanism of bigelovin on the activation of NLRP3 inflammasome Bigelovin may inhibit activated protein C kinase 1 (RACK1) by directly binding with cys168 of RACK1. Bigelovin thus prevents oligomerization of NLRP3 (NLRP3 active conformation) and subsequent assembly of NLRP3 inflammasome, blocking the activation of
Jian Cui, Meng Yang, Chengli Yu, Haidong Zhang, Yuan Gong, Yang Hu, Yue Wang, Qingxin Yuan, An Pan, Jiepin Li, Yaowen Hu, Zecheng Jin, Xuemei Peng, Anyuan Wu, Junwei Wang, Qian Wang, Yinan Zhang, Lihong Hu   +17 more
wiley   +1 more source

Sesquiterpenes from Laurencia similis [PDF]

Molecules, 2009
One new sesquiterpene, (4E)-1-bromo-5-[(1'S*,3'R*)-3'-bromo-2',2'-dimethyl-6'-methylenecyclohexyl]-3-methylpent-4-ene-2,3-diol (1), and fifteen known sesquiterpenes, isopalisol (2), luzonensol (3), palisadin B (4), aplysistatin (5), palisadin A (6), 4-hydroxyl-palisudin C (7), 5-acetoxypalisadin B (8), 10-hydroxyaristolan-9-one (9), aristol-8-en-1-one (
Su, Hua, Shi, Da-Yong, Li, Jing, Guo, Shu-Ju, Li, Li-Li, Yuan, Zhao-Hui, Zhu, Xiao-Bin   +6 more
openaire   +4 more sources

Chemistry and Biological Activities of Terpenoids from Copaiba (Copaifera spp.) Oleoresins

Molecules, 2012
Copaiba oleoresins are exuded from the trunks of trees of the Copaifera species (Leguminosae-Caesalpinoideae). This oleoresin is a solution of diterpenoids, especially, mono- and di-acids, solubilized by sesquiterpene hydrocarbons. The sesquiterpenes and
Jamilly Kelly Oliveira Neves, José Alexsandro da Silva, Paula Cristina Souza Barbosa, Fabiano de Sousa Vargas, Lidiam Maia Leandro, Valdir Florêncio da Veiga-Junior   +5 more
doaj   +1 more source

Extraction and Characterization of Chamomile (Matricaria recutita L.) Essential Oil Using the Green Technology of Solvent-Free Microwave Extraction

Biology and Life Sciences Forum, 2022
This study aimed to assess the benefits of the solvent-free microwave extraction (SFME) on chamomile (Matricaria recutita L.) essential oil quality and yield compared to the extraction by steam distillation (SD). The oil obtained by SFME and SD presented
Esteban Herrera, Claudia Pacheco, Luis Olivera-Montenegro   +2 more
doaj   +1 more source

Natural fumigation as a mechanism for volatile transport between flower organs [PDF]

Nature Chemical Biology, 2019, 15 (6), pp.583-588
Plants synthesize volatile organic compounds (VOCs) to attract pollinators and beneficial microorganisms, to defend themselves against herbivores and pathogens and for plant-plant communication. Generally, accumulation and emission of VOCs occur from the tissue of their biosynthesis.
arxiv   +1 more source

Observations of sesquiterpenes and their oxidation products in central Amazonia during the wet and dry seasons.

Atmospheric Chemistry and Physics, 2018
Biogenic volatile organic compounds (BVOCs) from the Amazon forest region represent the largest source of organic carbon emissions to the atmosphere globally.
L. Yee, G. Isaacman-VanWertz, R. Wernis, Meng Meng, Ventura Rivera, N. Kreisberg, S. Hering, Mads S. Bering, M. Glasius, M. A. Upshur, A. G. Bé, R. J. Thomson, F. M. Geiger, J. Offenberg, M. Lewandowski, I. Kourtchev, M. Kalberer, Suzane S. de Sá, S. Martin, M. L. Alexander, B. Palm, Weiwei Hu, P. Campuzano‐Jost, D. Day, Jose L. Jimenez, Yingjun Liu, K. McKinney, P. Artaxo, J. Viegas, A. Manzi, Maria B. Oliveira, R. D. de Souza, Luiz A. T. Machado, K. Longo, Allen H. Goldstein   +34 more
semanticscholar   +1 more source

Virtual Screening of Plant Volatile Compounds Reveals a High Affinity of Hylamorpha elegans (Coleoptera: Scarabaeidae) Odorant-Binding Proteins for Sesquiterpenes From Its Native Host [PDF]

, 2016
Indexación: Web of ScienceHylamorpha elegans (Burmeister) is a native Chilean scarab beetle considered to be a relevant agricultural pest to pasture and cereal and small fruit crops.
Ana Mutis, Andrés Quiroz, Angélica González-González, Choo, Claudio C. Ramírez, Durán, Durán, Herbert Venthur, Ju, Leal, Lefort, Maximiliano Rojas, Osvaldo Yáñez, Rodríguez, Rubén Palma-Millanao, Sanner, Trott, Vergara-Jaque, Zhuang   +18 more
core   +1 more source

The Chemistry of the Sesquiterpene Alkaloids

Journal of the Brazilian Chemical Society, 2017
We present the occurrence, structures, biological activities, biosynthesis, and syntheses of the sesquiterpene alkaloids.
Brocksom, Timothy J., Oliveira, Kleber T. de, Desiderá, André L.   +2 more
openaire   +4 more sources

Evaluation of supercritical plant extracts on volatile and non volatile biologically active lipophil components

International Journal of Horticultural Science, 2001
Authors dealt more than ten years with the analysis of supercritical extracts. For extraction (SFE) carbon dioxide was used as supercritical solvent. Fractionation of extracts was carried out by releasing the separations pressure at two stages.
É. Lemberkovics, Á. Kéry, B. Simándi, T. Sz. Kristóf T., A. Kakasy, É. Szőke   +5 more
doaj   +1 more source