Results 81 to 90 of about 9,612 (262)

Head‐to‐Head Comparison of Four Ultrasound Elastography Techniques in Detecting Advanced Fibrosis

Portal Hypertension &Cirrhosis, EarlyView.
Elastography is an important noninvasive method for diagnosing advanced fibrosis (AF); however, evidence remains insufficient, particularly regarding acoustic radiation force impulse (ARFI) techniques. This prospective mulitcenter study concludes that vibration controlled transient elastography (VCTE) demonstrates superior diagnostic performance to ...
Jiahao Han, Lichen Chu, Lixin Yang, Kexin Lou, Guangbin Dou, Huiming Shen, Xiaojun Cheng, Zuowei Bao, Jia Li   +8 more
wiley   +1 more source

The Conjugates of Phenolic Acids in Lichens of the Order Lecanorales

International Journal of Secondary Metabolite, 2016
Lichens are symbiotic associations of a fungus (usually an ascomycete) and a photobiont, which may be an alga and/or a cyanobacterium. Lichens dominate on about 6–8% of land surface, mainly in the habitats with severe climatic conditions.
T. N. NIKOLAEVA, P. V. LAPSHIN, A. G. ZAVARZINA, N. V. ZAGOSKINA   +3 more
doaj  

Permafrost Distribution in the Canadian Rockies: Key Variables Influencing Patch‐Scale Variability

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT The spatial distribution of permafrost in mountainous regions is influenced by various factors such as topography, climate, vegetation, and substrate. Despite the existence of comprehensive permafrost maps at national and global levels, they fail to accurately represent the patch‐scale (e.g., < 25 m) permafrost distribution in characteristic ...
Gerardo Zegers, Masaki Hayashi, Pablo A. Mendoza   +2 more
wiley   +1 more source

Spatial Variability of Permafrost and Active Layer Thickness in a Forested Hillslope of the Taiga Shield

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Under continued climate warming, understanding present‐day permafrost distribution and the controls on ground thaw are critical for predicting permafrost thaw trajectories and associated implications. This study presents a high‐resolution investigation of permafrost extent and active layer thickness (ALT) across a coniferous forested hillslope
Alana Muenchrath, Christopher Spence, Andrew Ireson   +2 more
wiley   +1 more source

The Age and Origin of Block Deposits in the Victorian Alps, Australia

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Large periglacial block deposits are found in the mountains of southeastern Australia. Despite their widespread distribution, their mode of formation and age are poorly understood. These landforms hold considerable potential to shed light on the nature of cooling during glacial periods. In this paper we present a new study of block deposits in
Timothy T. Barrows, Michelle S. Worland, Julian Murton, Stephanie C. Mills, L. Keith Fifield   +4 more
wiley   +1 more source

Multiproxy Chronologies of the Hurd Rock Glacier (Livingston Island, South Shetland Islands, Maritime Antarctica): Between the Late‐Stage Stabilization and Flow Deceleration

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT The Hurd Rock Glacier, located on Livingston Island (South Shetland Islands archipelago, Maritime Antarctica), is a tongue‐shaped feature composed of angular boulders, displaying transverse ridges and furrows, and featuring lobate structures, which are more prominently developed in its frontal sector.
Rosana Menéndez‐Duarte, Jesús Ruiz‐Fernández, Laura Rodríguez‐Rodríguez, José M. Fernández‐Fernández, Vincent Rinterknecht, ASTER Team   +5 more
wiley   +1 more source

UK Clinical Guideline for Best Practice in the Use of Vaginal Pessaries for Pelvic Organ Prolapse

Neurourology and Urodynamics, EarlyView.
Claire Brown, Angie Rantell, Kate Anders, Lucy Brett, Avril McDowell, Di Tilston, Nicola Wilson, Julia Wilkens, Naz Abbas, Lucy Dwyer, Georgia Smith, Kate Lough   +11 more
wiley   +1 more source

Evaluating Testability of Permafrost Models Through Physical and Thermal Testing in Complex Mountain Terrain, Yukon, Canada

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Due to its subsurface nature, permafrost cannot be directly observed with the naked eye or optical remote sensing. Consequently, accurately describing its distribution and thermal state is challenging. This is especially true in vast, remote environments, where obtaining comprehensive field data is demanding or improbable.
Ria Nicholson, Philip P. Bonnaventure, Nick C. Noad, Madeleine C. Garibaldi, Rabecca Thiessen, Will Kochtitzky   +5 more
wiley   +1 more source

Effect of elevation gradient on the distribution of lichens and mosses of central Himalayan region, Uttarakhand, India

G-Journal of Environmental Science and Technology, 2016
The present investigation aimed to determine the distribution pattern of 27 species of lichens and 7 species of mosses within five altitudinal bands between 3100-4000m near Badrinath area in the Central Himalaya.
Jaswant Singh, D. K. Upreti, Anand K. Dubey   +2 more
doaj  

Ecophysiology and phylogeny of new terricolous and epiphytic chlorolichens in a fog oasis of the Atacama Desert

MicrobiologyOpen, 2019
The Atacama Desert is one of the driest and probably oldest deserts on Earth where only a few extremophile organisms are able to survive. This study investigated two terricolous and two epiphytic lichens from the fog oasis “Las Lomitas” within the ...
Patrick Jung, Dina Emrich, Laura Briegel‐Williams, Michael Schermer, Lena Weber, Karen Baumann, Claudia Colesie, Philippe Clerc, Lukas W. Lehnert, Sebastian Achilles, Jörg Bendix, Burkhard Büdel   +11 more
doaj   +1 more source