نتایج جستجو برای: regional interactions

تعداد نتایج: 587591  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2011
Robert E Ricklefs

The regional community concept embraces the idea that species interactions across large areas shape both the geographic/ecological distributions and the local abundances of populations. Within this framework, I analyzed the distribution and abundance of 79 species of land birds across 142 ca. 10-ha census plots from standardized breeding bird censuses in deciduous and mixed forests of eastern N...

2017
Eva Amalie Nielsen Kenichi Okumura Mei Sun Vibeke E Hjortdal Andrew N Redington Mark K Friedberg

Death and morbidity in pulmonary arterial hypertension (PAH) are often due to right ventricular (RV) failure and associated left ventricular (LV) dysfunction. We investigated regional myocardial remodeling and function as the basis for adverse ventricular-ventricular interactions in experimental chronic RV pressure overload. Two distinct animal models were studied: A rabbit model of increased R...

1993
Filippo Giorgi

The recent development of regional climate models which can potentially produce long-term (multi-year to multi-decadal) simulations at high spatial resolution (5-50 km), opens a range of possibilities for interactive coupling with ecosystem, hydrology, ocean-sea-ice and chemistry models on the regional scale. Such coupling offers two primary advantages: (1) It is accomplished at scales more con...

2005
Kathleen L. Hancock Jinghua Xu Kathleen Hancock

An analytical model is developed to assign regional freight across a multimodal highway and railway network using geographic information systems. As part of the regional planning process, the model is an iterative procedure that assigns multimodal freight traffic to the network to achieve overall network optimum. The procedure integrates optimization programming with traffic assignment, conside...

2011
Yasuyuki Taki Benjamin Thyreau Shigeo Kinomura Kazunori Sato Ryoi Goto Ryuta Kawashima Hiroshi Fukuda

To determine the relationship between age and gray matter structure and how interactions between gender and hemisphere impact this relationship, we examined correlations between global or regional gray matter volume and age, including interactions of gender and hemisphere, using a general linear model with voxel-based and region-of-interest analyses. Brain magnetic resonance images were collect...

Journal: :Biosensors & bioelectronics 2017
Md Hakimul Haque Vinod Gopalan Sharda Yadav Md Nazmul Islam Ehsan Eftekhari Qin Li Laura G Carrascosa Nam-Trung Nguyen Alfred K Lam Muhammad J A Shiddiky

We report a new method for the detection of regional DNA methylation using base-dependent affinity interaction (i.e., adsorption) of DNA with graphene. Due to the strongest adsorption affinity of guanine bases towards graphene, bisulfite-treated guanine-enriched methylated DNA leads to a larger amount of the adsorbed DNA on the graphene-modified electrodes in comparison to the adenine-enriched ...

2017
William Brock

The surface albedo feedback along with heat and moisture transport from the Equator to the Poles, are associated with polar amplification which is a well-established scientific fact. The present paper extends Brock and Xepapadeas (2017) to a non-cooperative framework with polar amplification, where regions decide emissions by maximizing own welfare. This can be regarded as a case of regional no...

2003
Robert E. Ricklefs

Robert E. Ricklefs Department of Biology, University of Missouri-St Louis, 8001 Natural Bridge Road, St Louis, MO 63121–4499, USA E-mail: [email protected] Abstract The present study proposes to reconcile the different spatial and temporal scales of regional species production and local constraint on species richness. Although interactions between populations rapidly achieve equilibrium and lim...

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