Results 111 to 120 of about 168,792 (293)

Controlled Formation and Unusual Reactivity of Cyanohexatriyne (HC7N), a Synthetically Challenging Interstellar Cyanopolyyne

Chemistry – A European Journal, EarlyView.
First controlled formation of cyanohexatriyne (HC7N) is achieved using a cobalt–alkyne masking strategy that overcomes the intrinsic instability of nitrile‐substituted polyynes. The approach enables spectroscopic validation of HC7N and reveals its pronounced electrophilicity through a selective conjugate addition with diethylamine.
Léa Lefrançois, Mano Cremer, Thierry Roisnel, Jean‐Claude Guillemin, Yann Trolez   +4 more
wiley   +1 more source

Letter from Alex H. H. Stuart to Luke Lea, 1852

, 2008
Stuart informs Lea that the President has decided to remove Beale for the Superintendency in ...
Stuart, Alexander H. H. (Alexander Hugh Holmes), 1807-1891.
core  

Hidden Markov graphical models with state‐dependent generalized hyperbolic distributions

Canadian Journal of Statistics, EarlyView.
Abstract In this article, we develop a novel hidden Markov graphical model to investigate time‐varying interconnectedness between different financial markets. To identify conditional correlation structures under varying market conditions and accommodate shape features embedded in financial time series, we rely upon the generalized hyperbolic family of ...
Beatrice Foroni, Luca Merlo, Lea Petrella   +2 more
wiley   +1 more source

Lánjáid stellen – duddjoma ovdánahttinbargu fenomenologalaš geahčastagas

Sámi dieđalaš áigečála
Dát artihkal lea vuođđuduvvon duodjeovdánahttinprošektii, maid lean čađahan Sámi allaskuvllas jagiid 2010–2012, ja mii de lea oassi empiriijas. Báikkit, ávdnasat ja muđui vásáhusat mat bohtet muitui, leat gávnnadeamit mat buktet bohtosiid, ja dat ...
Gunvor Guttorm
doaj   +1 more source

Correspondence : Lea (Isaac) and Engelmann (George), 1876-1877

, 1876
Lea to Engelmann, 1876 ...
Lea, Isaac, 1792-1886
core  

Chemie.KI – Automatisierte Aufgabenbewertung durch trainierte KI‐Modelle

CHEMKON, EarlyView.
In Schule und Hochschule bearbeiten Lernende in der Regel mehr Aufgaben, als Lehrende korrigieren können. Wo der Mensch an seine Grenzen kommt, kann Künstliche Intelligenz (KI) ansetzen und bei Routineaufgaben unterstützen oder sie auch ganz übernehmen.
Timm Wilke
wiley   +1 more source

Progress of in situ conservation and use of crop wild relatives for food security in a changing climate: a case of the underutilised Vigna Savi

Frontiers in Sustainability
Crop wild relatives (CWRs) - wild plant taxa genetically closely related to domesticated plants - are considered an alternative pathway to solving global food insecurity in a changing climate.
Leonard Manda, Leonard Manda, Rodrigue Idohou, Eric Etchikinto Agoyi, Symphorien Agbahoungba, Kolawolé Valère Salako, Clement Agbangla, Aristide Cossi Adomou, Achille Ephrem Assogbadjo   +8 more
doaj   +1 more source

Changing patterns of colonisation and persistence during the wolf recolonisation of the human‐dominated Italian alpine region

Ecography, EarlyView.
Dynamic occupancy models are fundamental for understanding complex species recolonisation processes, as they allow the assessment of both colonisation and persistence probabilities over time. Using a dynamic occupancy model and a large‐scale multi‐year dataset on wolf presence collected in the Italian alpine region between 2014 and 2020, we analysed ...
M. V. Boiani, P. Dupont, R. Bischof, O. Friard, F. Bisi, G. Bombieri, S. Calderola, S. Carolfi, C. Chioso, L. Corlatti, U. Fattori, P. Ferrari, S. Filacorda, M. Geary, P. Molinari, E. Pernechele, D. Righetti, M. Tomasella, F. Truc, E. Avanzinelli, A. von Hardenberg, F. Marucco   +21 more
wiley   +1 more source

Plant adaptive strategies respond to environmental change across European grassland habitats

Ecography, EarlyView.
Grassland ecosystems are facing rapid and ongoing change driven by intensified land‐use and accelerated climate change, highlighting the urgent need to understand their potential adaptation and response to environmental change. We analyzed data from 52 980 vegetation plots spanning all major grassland habitats in Europe (including alpine, rocky, sandy,
Xiao‐Peng Tan, Petr Pyšek, Milan Chytrý, Irena Axmanová, Jan Divíšek, Ilona Knollová, Svetlana Aćić, Idoia Biurrun, Hans Henrik Bruun, Jürgen Dengler, Tetiana Dziuba, Emmanuel Garbolino, Attila Lengyel, Jonathan Lenoir, Ricarda Pätsch, Aaron Pérez‐ Haase, Valerijus Rašomavičius, Eszter Ruprecht, Urban Šilc, Kiril Vassilev, Yi‐Jun Wang, Wen‐Yong Guo   +21 more
wiley   +1 more source

Pre‐industrial land‐use limits contemporary shrub encroachment in the French Alps

Ecography, EarlyView.
Shrub encroachment has become a global phenomenon in recent decades. While global warming in the Arctic is often cited as the primary cause, human‐managed mountain regions have experienced intense historical land‐use that may also play a considerable role.
Baptiste Nicoud, Florian Carrière, Arthur Bayle, Christian Devlieger, Philippe Choler, Christophe Corona, Sandra Lavorel   +6 more
wiley   +1 more source