Results 71 to 80 of about 16,333 (242)

Holocene Fire Dynamics in the Altai Mountains and Its Driving Factors

Geophysical Research Letters, Volume 52, Issue 9, 16 May 2025.
Abstract Fire activity reshapes the successions of forest and steppe ecosystems. However, the long‐term fire history and its driving factors in the Altai Mountains remain poorly documented and understood. In this study, we explore the Holocene fire history and its influencing factors, based on different sizes and morphologies of charcoals in a sediment
Yu Hu, Xiaozhong Huang, Yuan Li, Hongming Chen, Otgonbayar Demberel, Jun Zhang, Lixiong Xiang, Ling Wang, Xiaoyan Mu, Xiuxiu Ren, Jiawu Zhang, Mingrui Qiang, Jule Xiao   +12 more
wiley   +1 more source

On the Directonal Derivative Sets and Differentials of the Set Valued Maps [PDF]

arXiv, 2014
In this paper directional derivative sets and differentials of a given set valued map are studied. Relations between the set valued map and compact subsets of the directional derivative sets of the given map are investigated. Upper and lower contingent cones of some plane sets are calculated.
arxiv  

Ontogenetic Changes in Endocranial Anatomy in Gorgosaurus libratus (Theropoda: Tyrannosauridae) Provide Insight Into the Evolution of the Tyrannosauroid Endocranium

Journal of Comparative Neurology, Volume 533, Issue 5, May 2025.
Changes through growth (ontogenetic) in the braincase of the eutyrannosaurian tyrannosauroid Gorgosaurus libratus are discussed. Most notably, brain cavity endocasts of immature Gorgosaurus are found to more clearly show details of the brain morphology than more mature individuals, a finding that has implications for improving dinosaur paleoneurology ...
Jared T. Voris, François Therrien, Ryan C. Ridgely, Lawrence M. Witmer, Darla K. Zelenitsky   +4 more
wiley   +1 more source

On Musielak N-functions [PDF]

arXiv, 2018
In this paper, the concept of Musielak N-functions and Musielak-Orlicz spaces generated by them well be introduced. Facts and results of the measure theory will be applied to consider properties, calculus and basic approximation of Musielak N-functions and their Musielak-Orlicz spaces. Finally, the relationship between Musielak N-functions and Musielak-
arxiv  

Coexistence between Przewalski's horse and Asiatic wild ass in the desert: The importance of people

Journal of Applied Ecology, Volume 62, Issue 5, Page 1078-1090, May 2025.
Our findings highlight the importance of people in permitting sympatric coexistence during resource scarcity. However, human involvement requires careful management. Increased human presence may benefit horses but restrict wild asses' access to some quality waters, potentially weakening their climate resilience. Abstract Przewalski's horses and Asiatic
Qing L. Cao, Yongjun Zhang, Melissa Songer, Peter Leimgruber, Defu Hu, Jicai Li, Chen Wang, Daniel I. Rubenstein   +7 more
wiley   +1 more source

Reduction of glaciers of the South Chuya Range (Altai) since the maximum of the Little Ice Age

Лëд и снег
The extent of glaciation of the South Chuya Range in the LIA and the analysis of its subsequent gradual reduction were assessed. Based on interpretation of Corona, Landsat-7, Sentinel-2, World View-3 satellite images and analysis of field data, the ...
D. A. Ganyushkin, D. V. Bantcev, S. A. Griga, E. S. Derkach, O. V. Ostanin, Yu. A. Gorbunova,, V. A. Rasputina, K. V. Chistyakov   +7 more
doaj   +1 more source

The Variational Iteration Method for Solving Asymmetric System of PDEs [PDF]

arXiv, 2018
We propose a method to obtain iterative schemes guarantee unique solutions for systems of partial differential equations that are not symmetric with respect to the time by generalizing He variational iteration method and using Banach fixed point theorem.
arxiv  

Functional Signatures of Surface Pollen and Vegetation Are Broadly Similar: Good News for Past Reconstructions of Vegetation

Journal of Biogeography, Volume 52, Issue 5, May 2025.
ABSTRACT Aim Pollen assemblages are widely used to infer paleoenvironment features, aiming at reconstructing both past climates and biomes. However, the functional link between environmental conditions and pollen assemblages is not straightforward and requires thorough testing to be used confidently.
Lucas Dugerdil, Odile Peyron, Cyrille Violle, Sébastien Joannin, Guillemette Ménot, Pierre Denelle, Helge Bruelheide, Milan Chytrý, Richard Field, Mohamed Z. Hatim, Hamid Gholizadeh, Jiri Dolezal, Valério D. Pillar, Kamal H. Shaltout, Franziska Schrodt, Eric Garnier   +15 more
wiley   +1 more source

Concerning some results of an expedition to the republic of Altai

Историческая этнология, 2016
In 2016, a group of scientists from the Sh. Marjani Institute of History of the Academy of Sciences of the Republic of Tatarstan made an expedition to the Altai Republic.
Gulnara F. Gabdrakhmanova
doaj  

Main Principles of the Mission of Altai Missionaries of the Second Half of the XIX – Early XX Century [PDF]

Вестник Свято-Филаретовского института, 2012
The author outlines main principles of the mission, suggested by the outstanding Russian Orthodox missionary of the XIX century Archimandrite Makary (Glukharev) (1792–1847).
Irina Soldatova
doaj