Results 21 to 30 of about 11,880 (211)

Spatial analysis of biodiversity soil macrofauna in Populus deltoides plantation of northern forests of Iran [PDF]

open access: yesCaspian Journal of Environmental Sciences, 2019
Information about the spatial patterns of soil biodiversity and understanding the effects of biodiversity on ecosystem processes are limited. This study was conducted to determine whether biodiversity of soil macrofauna features demonstrate spatial ...
N Ghorbanzadeh   +4 more
doaj   +1 more source

Variabilidade espacial de propriedades físico-hídricas de um nitossolo sob a cultura do feijoeiro irrigado Spatial distribution of physical-hydric properties of a nitosols under irrigated bean crop

open access: yesEngenharia Agrícola, 2010
Devido à utilização mais intensa de água via irrigação e ao elevado custo que tem sido agregado a este recurso, é necessário que os sistemas de irrigação operem com altos níveis de eficiência.
Rachel M. L. Guimarães   +4 more
doaj   +1 more source

Model of distribution of valuable minerals and harmfull pollutants as basic qualitative parameters of magnesite deposit Bankov – Košice and its presentation by GIS [PDF]

open access: yesActa Montanistica Slovaca, 2005
Magnesite deposits are in principle the only non-ore mineral deposits in Slovakia, which are mined economically using underground methods. Their reserves and output represent an important part of the world reserves and output.
Marek Pauco, Peter Blišťan
doaj  

BALIKESİR’DE HAVA KİRLİLİĞİNİN SOLUNUM YOLU HASTALIKLARININ MEKÂNSAL DAĞILIŞI ÜZERİNE ETKİSİNİ ANLAMADA JEO-İSTATİSTİK TEKNİKLER

open access: yesCoğrafi Bilimler Dergisi, 2007
Objectives of this study were to: (a) investigate the association between outdoor air pollution and respiratory disease hospitalization (RDH), (b) describe the geographical and temporal distribution of RDH cases in order to identify areas with unusually ...
Şermin TAĞIL
doaj   +1 more source

Directional Differences in Thematic Maps of Soil Chemical Attributes with Geometric Anisotropy

open access: yesStats
In the study of the spatial variability of soil chemical attributes, the process is considered anisotropic when the spatial dependence structure differs in relation to the direction.
Dyogo Lesniewski Ribeiro   +4 more
doaj   +1 more source

Geological and geotechnical challenges on the Great Dyke of Zimbabwe and their impact on hardrock pillar design

open access: yesDeep Underground Science and Engineering, EarlyView.
The Great Dyke of Zimbabwe is notable for its rich platinum group metal deposits but poses significant geological and geotechnical challenges due to its complex rock types and structural features. Traditional pillar design methods are insufficient for addressing these complexities; the study suggests incorporating advanced techniques such as machine ...
Tawanda Zvarivadza   +3 more
wiley   +1 more source

Using geostatistical and deterministic modelling to identify spatial variability of groundwater quality [PDF]

open access: yesDesert, 2019
The main portion of water demands of arid regions like Kashan Plain, Iran supply by groundwater wells. This research was conducted to assess the groundwater quality as well as modelling and mapping groundwater quality in the study area using geosatistics
Z. Feizi, Amir R. Keshtkar, A. Afzali
doaj   +1 more source

Random finite element analysis on ground subsidence caused by tunnel excavation in karst regions with spatial variable soil

open access: yesDeep Underground Science and Engineering, EarlyView.
This study investigates ground subsidence during tunnel excavation in karst areas, highlighting the combined effects of karst cave proximity, cave size, and soil spatial variability. Findings suggest that shorter cave distances and larger cave sizes increase subsidence variability, and a modified Peck formula is proposed for more accurate subsidence ...
Zhenghong Su   +4 more
wiley   +1 more source

Variabilidad espacial de los modelos de infiltración de Philip y Kostiakov en un suelo Ândico</a> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16"><i>Engenharia Agrícola</i>, 2008 </span><br><span class="r_content">Conhecer o comportamento da infiltração é de grande utilidade devido a sua aplicação na produção agrícola, pois permite definir a operação de sistemas de irrigação e estudar os efeitos de diferentes práticas de uso do solo.</span><br><span class="r_sub"><i>Andrés F. Rodríguez-Vásquez<span id="ma_9" style="display:none">, Andrés M. Aristizábal-Castillo, Jesús H. Camacho-Tamayo</span>   <small><a href="#" style="color:#808080;" onClick="return toggle_div(this, 'ma_9')">+2 more</a></small></i></span><br><small><a href="https://doaj.org/article/6d2879c886f241b78814f5076b4fafb4" target="_blank" rel="nofollow" title="doaj.org/article/6d2879c886f241b78814f5076b4fafb4">doaj</a> </small>   <div id="more_9" style="display:none"><a href="/sci_redir.php?doi=10.1590%2FS0100-69162008000100007" target="_blank" rel="nofollow">openaccessbutton.org (pdf)</a><br><a href="javascript:navigator.clipboard.writeText('10.1590/S0100-69162008000100007'); alert('Copied the doi');">copy doi</a> <small>(10.1590/S0100-69162008000100007)</small><br></div><small><a href="#" onClick="return toggle_div(this, 'more_9')">+1 more source</a></small><br></div><div class="r"><p class="r_title"><a href="https://doi.org/10.1002/eqe.70139" target="_blank" rel="nofollow">Regional Adjustments to NGA‐West2 Ground‐Motion Models for Turkey</a> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16"><i>Earthquake Engineering &Structural Dynamics, EarlyView.</i></span><br><span class="r_content">ABSTRACT This paper presents a ground‐motion model updating (GMMU) framework to adjust NGA‐West2 models for predicting a set of intensity measures in Turkey, including peak ground acceleration (PGA), peak ground velocity (PGV), and pseudo‐spectral acceleration (PSA) at periods ranging from 0.01 to 10 s. The GMMU framework integrates bias identification </span><br><span class="r_sub"><i>Mao‐Xin Wang, Gang Wang</i></span><br><small><a href="https://onlinelibrary.wiley.com/doi/10.1002/eqe.70139?mi=2or9o2m&af=R&AllField=geostatistic&ConceptID=15941&content=articlesChapters&target=default" target="_blank" rel="nofollow" title="wiley.com/doi/10.1002/eqe.70139?mi=2or9o2m&af=R&AllField=geostatistic&ConceptID=15941&content=articlesChapters&target=default">wiley</a> </small>   <div id="more_10" style="display:none"><a href="/sci_redir.php?doi=10.1002%2Feqe.70139" target="_blank" rel="nofollow">openaccessbutton.org (pdf)</a><br><a href="javascript:navigator.clipboard.writeText('10.1002/eqe.70139'); alert('Copied the doi');">copy doi</a> <small>(10.1002/eqe.70139)</small><br></div><small><a href="#" onClick="return toggle_div(this, 'more_10')">+1 more source</a></small><br></div><div class="r"><div style="margin-bottom:2px;overflow:hidden"><div style="display: inline-block; float: left; font-size: small; padding-right: 16px; margin-top: -1px; padding-bottom: 1px;"><a href="/q-mathematics/" class="suggestion"onclick="show_loader();"><b>mathematics</b></a><br/><a href="/q-statistics/" class="suggestion"onclick="show_loader();"><b>statistics</b></a><br/><a href="/q-spatial_variability/" class="suggestion"onclick="show_loader();"><b>spatial variability</b></a><br/></div><div style="display: inline-block; float: left; font-size: small; padding-right: 16px; margin-top: -1px; padding-bottom: 1px;"><a href="/q-computer_science/" class="suggestion"onclick="show_loader();"><b>computer science</b></a><br/><a href="/q-geostatistics/" class="suggestion"onclick="show_loader();"><b>geostatistics</b></a><br/><a href="/q-geology/" class="suggestion"onclick="show_loader();"><b>geology</b></a><br/></div><div style="display: inline-block; float: left; font-size: small; padding-right: 16px; margin-top: -1px; padding-bottom: 1px;"><a href="/q-kriging/" class="suggestion"onclick="show_loader();"><b>kriging</b></a><br/><a href="/q-geography/" class="suggestion"onclick="show_loader();"><b>geography</b></a><br/><a href="/q-environmental_science/" class="suggestion"onclick="show_loader();"><b>environmental science</b></a><br/></div></div></div><div class="pagenav"><a href="/q-geostatistic/p-2/" rel="nofollow"><b>previous</b></a>   <a href="/q-geostatistic/" rel="nofollow">1</a>  <a href="/q-geostatistic/p-2/" rel="nofollow">2</a>  <b>3</b>  <a href="/q-geostatistic/p-4/" rel="nofollow">4</a>  <a href="/q-geostatistic/p-5/" rel="nofollow">5</a>   <a href="/q-geostatistic/p-4/" id="next" rel="nofollow"><b>next</b></a> </div><br></div> </div> <script>document.getElementById('loadingGif').style.display='none';</script><div style="width: 100%; height: 40px; bottom: 0px; background-color: #f5f5f5;"><div style="padding-left: 15px; padding-top: 10px"> <a href="/" rel="nofollow">Home</a> - <a href="/page-about/" rel="nofollow">About</a> - <a href="/page-disclaimer/" rel="nofollow">Disclaimer</a> - <a href="/page-privacy/" rel="nofollow">Privacy</a> </div></div> <link rel="stylesheet" href="//ajax.googleapis.com/ajax/libs/jqueryui/1.11.4/themes/smoothness/jquery-ui.min.css"/> </body> </html>