Results 131 to 140 of about 1,169,928 (316)
Revue de Géographie Alpine, 2012 This paper presents a preliminary analysis of work conducted along altitudinal gradients in the mountains and plains of northern Tanzania. We find evidence of a high degree of interdependence among groups of people of different language/cultural groups ...
Elisabeth Edna Wangui +11 more
doaj +1 more source
Cogent Food & Agriculture, 2020 Environmental gradients (altitude) are the factors that determine the carbon capturing the potential of a given forest. This study was conducted to determine the influence of elevation in the Yegof mountain forest’s carbon sequestration potential.
Eyob Yimer Eshetu, Tesfay Atsbha Hailu
doaj +1 more source
A major regional air pollution event in the northeastern United States caused by extensive forest fires in Quebec, Canada [PDF]
, 2004 During early July 2002, wildfires burned ∼1 × 106 ha of forest in Quebec, Canada. The resultant smoke plume was seen in satellite images blanketing the U.S. east coast.
Debell, Linsey J +5 more
core +2 more sources
Cutting Through the Green: A Case for Grassland Archaeology Using UAV Multispectral Data
Archaeological Prospection, EarlyView.ABSTRACT Advances in low‐altitude remote sensing are needed to improve the effectiveness of archaeological prospection in the Netherlands. The geomorphological situation and land use history make applying various remote sensing and geophysical technologies particularly challenging.
Roeland Emaus
wiley +1 more source
The physiology and biomechanics of avian flight at high altitude [PDF]
, 2006 Many birds fly at high altitude, either during long-distance flights or by virtue of residence in high-elevation habitats. Among the many environmental features that vary systematically with altitude, five have significant consequences for avian flight ...
Altshuler, Douglas L., Dudley, Robert
core
Adaptive mixing formation control of multiquadrotor unmanned aerial vehicle systems
Asian Journal of Control, EarlyView.Abstract This paper presents a distributed adaptive mixing control (AMC) design for formation maintenance of systems of multiquadrotor UAVs (q‐UAVs) during commanded path‐tracking maneuvers. The proposed formation control scheme has a two‐level structure. The high level defines the desired trajectories for rigid and persistent formation acquisition and
Nasrettin Köksal +2 more
wiley +1 more source
Biological Reviews, EarlyView.ABSTRACT Tick‐borne filarial nematodes are a complex and understudied group of parasites that rely on ticks for transmission in vertebrates. This review examines how intrinsic and extrinsic factors may influence the successful transmission of filarial nematodes in tick vectors, drawing insights from extensively studied haematophagous dipteran vector ...
Oluwaseun D. Ajileye +4 more
wiley +1 more source
Altitudinal distribution of birds in a mountainous region in southeastern Brazil
Zoologia (Curitiba), 2010 We studied the altitudinal distribution of 426 bird species in the Serra dos Órgãos, a mountainous region in southeastern Brazil. Thirty-four localities were visited between 1991 and 2009.
Francisco Mallet-Rodrigues +3 more
doaj +1 more source
Catheterization and Cardiovascular Interventions, EarlyView.ABSTRACT Background High‐altitude populations typically exhibit elevated hemoglobin (Hb) levels due to chronic hypoxic exposure; however, the impact of this elevation on the risk of ST‐segment elevation myocardial infarction (STEMI) remains unclear. Existing evidence is primarily derived from low‐altitude populations and cannot be directly extrapolated
Jing Li +10 more
wiley +1 more source
, 2014 The role of forests in mitigating the effect of climate change depends on the carbon sequestration potential and management. Although a number of studies have been done on carbon stock estimations, the influence of environmental factors on forest carbon ...
A. Feyissa, T. Soromessa, M. Argaw
semanticscholar +1 more source