Results 61 to 70 of about 977,590 (212)

Ridge Preservation Compared With Spontaneous Healing in Extraction Sockets With Buccal Dehiscence: A Randomized Clinical Trial

open access: yesJournal of Periodontal Research, EarlyView.
Alveolar ridge preservation using a bone allograft and collagen membrane significantly limited hard and soft tissue dimensional changes and promoted buccal bone gain compared with spontaneous healing in sockets with buccal dehiscence defects. This approach reduced the need for additional bone grafting, despite higher short‐term postoperative morbidity.
Cristina Valles   +5 more
wiley   +1 more source

Geopotential of the Geoid-Based North American Vertical Datum

open access: yes, 2013
The European Space Agency’s dedicated satellite gravity field mission the Gravity Field and Steady-state Ocean Circulation Explorer (GOCE) will at the end of its lifespan achieve 1-2 cm geoid accuracy at a spatial resolution of 100 km.
Hayden, Tasnuva
core   +1 more source

High and dry: the persistence of diverse coastal marsh communities depends on available upland area and connection to surrounding waters

open access: yesRestoration Ecology, EarlyView.
Sea‐level‐rise and alterations to natural hydrology have contributed to coastal land loss. To combat coastal land loss and maintain the ecosystem services provided by marshes, marsh creation has been broadly implemented. Marsh creation projects can be performed in conjunction with the construction of elevated terrestrial ridges that seek to mimic ...
Erik Nati‐Johnson   +3 more
wiley   +1 more source

A conventional approach for comparing vertical reference frames

open access: yesJournal of Geodetic Science, 2012
A conventional transformation model between different realizations of a vertical reference system is an important tool for geodetic studies related to precise vertical positioning and physical height determination.
Kotsakis C.
doaj   +1 more source

Estimating the greenhouse gas emission abatement potential of tidal introduction in Australia

open access: yesRestoration Ecology, EarlyView.
Abstract Introduction Coastal wetlands store higher amounts of organic carbon and sequester it at higher rates in soil relative to terrestrial ecosystems. However, they have been extensively drained, excavated, or modified, often to allow agriculture. Restoring degraded coastal wetlands can be an important contribution to climate change mitigation by ...
Mathew A. Vanderklift   +9 more
wiley   +1 more source

The vertical datum problem

open access: yes, 1984
Het vertical datum problem is een, opnieuw actueel geworden, probleem sinds er binnen afzienbare tijd meer en nauwkeurigere data verwacht kunnen worden. Om daarmee zinvol te kunnen werken is ook een beter bepaalde referentie noodzakelijk.
Crommentuyn, T. (author)
core  

Affirmation of Vertical Datum for surveying and mapping activities

open access: yes, 2022
34245 . .. Federal Realste~ I Vol. SS, No. 120 I Thursday. Jurie 24; 19931 Notices (Doellet No. t3MM-3110J AMrmatlon of Vertical Datum for Sun·eyln& and Map~ln& Activities aUBAGINCY: National Occ:an Sc:r:vicc, Coast&. Gc:odcti.: Survey.
Federal Register
core  

Hydrologic effects of tidal wetland restoration in the subsided Sacramento‐San Joaquin Delta, California, United States

open access: yesRestoration Ecology, EarlyView.
Abstract Objective The Dutch Slough Tidal Restoration project in the Sacramento‐San Joaquin Delta involves flooding of delta lands; however, concerns have been raised that such flooding will increase the hydraulic pressures on subsided adjacent islands and threaten levee stability.
Steven Deverel, Marc Olds
wiley   +1 more source

Evaluation of grace-based combined geopotential model over the Baltic countries

open access: yesGeodesy and Cartography, 2012
Nowadays, many geodetic and engineering applications require that the two essential components of the vertical positioning – the height and the corresponding reference surface (geoid), are determined precisely.
Artu Ellmann, Harli Jürgenson
doaj   +1 more source

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