Results 131 to 140 of about 814,404 (292)

Energy evolution‐based damage quantification and failure prediction of fault zone tunnel lining concrete: A novel acoustic emission–strain energy coupling approach

Deep Underground Science and Engineering, EarlyView.
This study investigates the damage evolution and failure mechanisms of tunnel lining concrete in active fault zones through uniaxial compression tests integrated with acoustic emission (AE) monitoring. A strong linear correlation is identified between the AE cumulative absolute energy and the total strain energy, providing a reliable energy‐based ...
Shuaida Zhu, Dongming Zhang, Mingliang Zhou, Shengjun Duo, Hongwei Huang   +4 more
wiley   +1 more source

Multiplicity of solutions for non-homogeneous Neumann problems in Orlicz-Sobolev spaces

Electronic Journal of Differential Equations, 2017
This article concerns the existence of non-trivial weak solutions for a class of non-homogeneous Neumann problems. The approach is through variational methods and critical point theory in Orlicz-Sobolev spaces.
Shapour Heidarkhani, Massimiliano Ferrara, Giuseppe Caristi, Johnny Henderson, Amjad Salari   +4 more
doaj  

Developing a universal tunnel span classification from global tunnel databases

Deep Underground Science and Engineering, EarlyView.
A universal tunnel span classification system is introduced that incorporates tunnel span, cross‐sectional area, typical tunnel types, and intended uses. Representative flatness ratio values are also provided for each span class. The classification is derived from a comprehensive database of 450 tunnel profiles from 47 countries.
Simon Heru Prassetyo, Inzagi Suhendar, Semmy Andrew Anugerah Djawa Tagi, Bonifacio Bondan Satryojati, Dzakwan Naufal Pratama, Yeremia Sintong Damero, Yudhidya Wicaksana, Erwin Lim, Ridho Kresna Wattimena   +8 more
wiley   +1 more source

Scott\u27s Pass, December, 1933

, 1933
Black and white photograph of a view of Scott\u27s Pass and Thayne\u27s Canyon above Park City, Utah, during a Wasatch Mountain Club hike in December of ...

core  

Asymmetric species turnover underpins the latitudinal diversity gradient in the Western Ghats biodiversity hotspot of India

Ecography, EarlyView.
Latitudinal diversity gradients (LDGs), namely an increase in species richness from higher to lower latitudes, are one of ecology's best documented patterns, yet how the fundamental components of compositional mismatches (i.e. species gains and losses along a gradient) explain these patterns remains poorly understood.
Rohitashva Shukla, Vidyadhar Atkore, Anuradha Bhat, Neelesh Dahanukar, Jeyaraj Antony Johnson, Rajeev Raghavan, Maria Dornelas, Kartik Shanker, Anne E. Magurran   +8 more
wiley   +1 more source

Taxon‐dependent multisite species turnover in fragmented habitats: comparing zeta diversity across birds, butterflies, and cursorial hunting spiders

Ecography, EarlyView.
Habitat fragmentation alters species diversity and reshapes community composition. However, conventional pairwise approaches to compositional variation (i.e. beta diversity metrics) do not explicitly characterize how species sharing or turnover change with the number of habitat patches.
Shirui Yu, Yufeng Zhou, Qiyu Jiang, Jie Xie, Yan Wang, Qiwen Du, Shang Sheng, Yaqian Cui, Kai Zhang, Zhixin Wen, Hao Yu, Yu Xu   +11 more
wiley   +1 more source

Integrated Mountain Development: A Question of Gender Mainstreaming

, 2002
“Development without women is like a bird trying to take off with only one wing,” according to Abeba Habtorm, director of the Ministry of Education in Asmara, Eritrea.
Wymann von Dach, Susanne
core  

Thermal niche breadth shapes regional elevational range sizes of tropical‐like mountain stream insects: evidence for Janzen's tropical mountain passes hypothesis

Ecography, EarlyView.
The core of Janzen's tropical mountain passes hypothesis is that relatively stable annual temperature variation limits species' thermal tolerances breadth, which, in combination with steep elevational temperature gradients, constrains the elevational distributions of these species. In addition to thermal niche breadth, elevational ranges were shaped by
Tingting Zhou, Ramiro Martín‐ Devasa, Xiaodan Chen, Haojie Wang, Yuxin Tan, Zhifa Liu, Bo‐Ping Han, Lu Wang, Zhenyuan Liu, Janne Soininen   +9 more
wiley   +1 more source

Long‐distance pollen transport mediated by migratory hoverflies

Ecography, EarlyView.
Long‐distance animal migrations shape ecosystems by redistributing nutrients, connecting populations, and mediating ecological interactions. However, the ecological contributions of many abundant insect migrants remain poorly quantified. Hoverflies are among the most numerous migratory insects and highly efficient pollinators, suggesting that their ...
Antonín Hlaváček, Martin Freudenfeld, Tadeáš Ryšan, Šimon Zeman, Vojtěch Jirásek, Radek K. Lučan, Karl R. Wotton, Jakub Štenc, Jiří Hadrava   +8 more
wiley   +1 more source

Existence of positive solutions for superlinear p-Laplacian equations

Electronic Journal of Differential Equations, 2015
We obtain a positive solution for a superlinear p-Laplacian equations with the Dirichlet boundary-value conditions. Our main tool is a variation of the mountain pass theorem.
Ting-Mei Gao, Chun-Lei Tang
doaj