Results 41 to 50 of about 48,024 (205)

Reindeer habitat selection under the risk of brown bear predation during calving season

Ecosphere, 2016
The depredation of semi‐domesticated reindeer by large carnivores reflects an important human–wildlife conflict in Fennoscandia. Recent studies have revealed that brown bears (Ursus arctos) may kill substantial numbers of reindeer calves (Rangifer ...
Therese R. Sivertsen, Birgitta Åhman, Sam M. J. G. Steyaert, Lars Rönnegård, Jens Frank, Peter Segerström, Ole‐Gunnar Støen, Anna Skarin   +7 more
doaj   +1 more source

Gourd‐Inspired Design of Unit Cell with Multiple Gradients for Physiological‐Range Pressure Sensing

Advanced Functional Materials, EarlyView.
Gourd‐shaped micro‐dome arrays with coordinated modulus, conductivity, and geometric gradients co‐optimize sensitivity and linearity in piezoresistive tactile sensors. Under pressure, a solid upper dome embeds into a porous lower dome, triggering rapid contact‐area growth and series‐to‐parallel conduction, enabling unsaturated, intensity‐resolved ...
Jiayi Xu, Ming Lei, Yuanzhe Liang, Biao Qi, Ziyi Dai, Yong Zhao, Bingpu Zhou   +6 more
wiley   +1 more source

Nanothermometry in Living Cells: Physical Limits, Conceptual and Material Challenges

Advanced Functional Materials, EarlyView.
Heat and temperature are fundamental to life. When nanothermometers began probing regions as small as a living cell, they triggered controversial claims of large intracellular temperature gradients. We review physical constraints energy‐conservation, entropy production, thermodynamic fluctuations, and molecular dynamics.
Taras Plakhotnik
wiley   +1 more source

Questioning current practice in brown bear, Ursus arctos, conservation in Europe that undervalues taxonomy [PDF]

Animal Biodiversity and Conservation, 2016
The present paper highlights problems associated with the currently–accepted taxonomy of brown bear, Ursus arctos, and their consequences for conservation at the European level.
Gippoliti, S.
doaj  

Microfluidic Platform for Multiparametric Profiling of Fibrin Permeability, Fibrinolysis, and Cell Invasion

Advanced Functional Materials, EarlyView.
This paper introduces a single‐channel H‐junction microfluidic assay that profiles fibrin's evolving function in repair and thrombosis by measuring, in one ∼3 µL gel, permeability, fibrinolysis kinetics, fibroblast invasion, and clot extension in real time.
Halston Deal, Elizabeth M. Byrnes, Sanika Pandit, Halle J. Cantor, Muskan Aslam, Stacy Ban, Megan Palmisano, Rosemary Bayless, Ashley C. Brown, Michael Daniele   +9 more
wiley   +1 more source

Status and Food Preferences of Bears in Sub Alpine Scrub Forests, AJK

Journal of Bioresource Management, 2018
Bears belong to the family Ursidae, under the order Carnivora with eight extant species (Grzimek, 2003). Roberts (1997) cite the presence of Himalayan brown bear, Himalayan black bear and Balochistan black bear in Pakistan.
Madeeha Manzoor, Safdar Ali Shah, Jibran Haider   +2 more
doaj   +1 more source

Receptor‐Free Identification of Toxic Gases Enabled by Hygroscopic Aqueous Salt Films

Advanced Functional Materials, EarlyView.
Water as a gas sensor coating sounds impossible—until it stops evaporating. Here, hygroscopic salt solutions (LiCl, LiBr, H3PO4) form non‐drying aqueous films on CNT chemiresistors under ambient air. Gases partition into these liquid layers, sometimes transforming into water, and generate salt‐specific resistance fingerprints across a four‐channel ...
Seongwoo Lee, Yun‐Tae Kim, Hwarang Choi, Sanghwan Park, Seongyeop Lim, Chang Young Lee   +5 more
wiley   +1 more source

Mapping habitat suitability and connectivity for Himalayan brown bears in Pakistan: Implications for conservation management

Global Ecology and Conservation
The Himalayan brown bear (Ursus arctos isabellinus) is a subspecies of brown bear that represents an ancient lineage. In Pakistan, it is classified as a critically endangered species with a patchy distribution, surviving in isolated populations over an ...
Shoaib Hameed, Shakeel Ahmad, Jaffar Ud Din, Hussain Ali, Muhammad Younas, Muhammad Kabir, Niloufar Lorestani, Sarwat Jahan, Muhammad Ali Nawaz   +8 more
doaj   +1 more source

NEW DATA ON NUTRITION OF BROWN BEAR (URSUS ARCTOS L.) OF KARELIA AND THE SOUTH OF THE KOLA PENINSULA

Transactions of the Karelian Research Centre of the Russian Academy of Sciences, 2016
The article provides data on the diet of brown bear, collected in Karelia and the Terski district of Murmansk Region in the 2002-2016 years. Quantitative characteristics of the diet of the brown bear are given on the basis of analysis of the composition ...
Konstantin Tirronen, Danila Panchenko, Anastasia Kuznetcova   +2 more
doaj   +1 more source

Metachromatic Butterfly Bile Pigments for Multi‐Level Optical Security Films

Advanced Functional Materials, EarlyView.
Bio‐derived optical security materials are manufactured by embedding butterfly‐based pigments in polymer films. Tunable color and fluorescence responses arise from concentration‐controlled metachromasy, enabling spatially encoded patterns with distinct visible, UV‐active, and spectral signatures.
Limin Wang, Bodo D. Wilts
wiley   +1 more source