Results 31 to 40 of about 520,290 (337)

Basement structure of the northern Ontong Java Plateau [PDF]

open access: yes, 1993
Site surveys conducted in conjunction with Leg 130 on the Ontong Java Plateau reveal a strong seismic reflector at 0.8 to 1.0 s below the seafloor that drilling at Sites 803 and 807 confirmed is Cretaceous basalt.
Hagen, Rick A.   +5 more
core   +2 more sources

Computing water flow through complex landscapes – Part 1: Incorporating depressions in flow routing using FlowFill [PDF]

open access: yesEarth Surface Dynamics, 2019
Calculating flow routing across a landscape is a routine process in geomorphology, hydrology, planetary science, and soil and water conservation. Flow-routing calculations often require a preprocessing step to remove depressions from a DEM to create a ...
K. L. Callaghan   +2 more
doaj   +1 more source

Giant Seafloor Depressions Caused by Slope Failures and Bottom Currents on the Namibia Continental Margin

open access: yesGeochemistry, Geophysics, Geosystems, 2021
More than 100 circular, elongate or crescent‐shaped very large seafloor depressions were found on the southern Namibian continental margin in water depths between 900 and 1700 m. These depressions show extraordinary sizes of up to 3 km diameter and 180 m
S. Wenau, V. Spiess, M. Zabel
doaj   +1 more source

Geodiversity of closed depressions in a high relief karst: Geoeducation asset and geotourism resource in the 'Sierra de las Nieves' National Park (Málaga Province, Southern Spain)

open access: yesInternational Journal of Geoheritage and Parks, 2022
Closed depressions are scale-invariant landforms that are the most distinctive and characteristic landform in karst terrains at the millimetre-to-kilometre scales. The purpose of this paper is twofold.
Eulogio Pardo-Igúzquiza   +5 more
doaj   +1 more source

Origin and structure of Devensian depressions at Letton, Herefordshire [PDF]

open access: yes, 2010
Groups of circular to oval enclosed depressions in soft sediments of Pleistocene age are relatively common in north-west Europe. These features are normally interpreted as being either glacial or periglacial in origin.
Astin, Timothy Robin   +2 more
core  

A robust braille recognition system [PDF]

open access: yes, 2004
Braille is the most effective means of written communication between visually-impaired and sighted people. This paper describes a new system that recognizes Braille characters in scanned Braille document pages.
B.C. Lin   +10 more
core   +3 more sources

Infection Models for Pine Wilt Disease on the Basis of Vector Behaviors

open access: yesPopulation Ecology, EarlyView.
Infection models for pine wilt disease without vector density were built to estimate the transmission coefficient of the pathogenic nematode. The models successfully simulated the annual change in the density of infected trees for four pine stands. ABSTRACT Pine wilt disease is caused by the pinewood nematode (Bursaphelenchus xylophilus Steiner et ...
Katsumi Togashi
wiley   +1 more source

The Mental Health Journey of Healthcare Workers Returning to Work After COVID-19 in Pakistan: Recovery and Resilience

open access: yesPatient Experience Journal
Since the beginning of the COVID-19 pandemic various studies have reported that healthcare workers (HCWs) are not only at risk of exposure but also experiencing psychological distress.
Fahad Ahmed   +7 more
doaj   +1 more source

The typology and clinical features of depressions during a period of remission in paroxysmal schizophrenia

open access: yesНеврология, нейропсихиатрия, психосоматика, 2017
Depressions in patients with schizophrenia in remission are quite common; however, their genesis and clinical features have been insufficiently studied.Objective: to assess the clinical features of depressions occurring in patients with paroxysmal ...
N. A. Tyuvina   +2 more
doaj   +1 more source

Periodically inundated uvalas and collapse dolines of Upper Pivka, Slovenia

open access: yesActa Geographica Slovenica, 2020
Within the area of Upper Pivka there is a number of intermittent lakes because of oscillation of water table level close to the surface i.e. shallow karst.
Uroš Stepišnik, Petra Gostinčar
doaj   +1 more source

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