Results 41 to 50 of about 3,167 (184)

Schmidt hammer exposure dating for brick masonry

Geochronometria, 2020
This research investigates the validity of the Schmidt hammer exposure dating (SHED) technique as a complementary means to date monuments according to the evaluation of the brick decay from masonry exposed to climatic conditions. The degree of surface weathering, I₅ (%) is calculated as an indicator of the ageing effect and ...
openaire   +1 more source

Fracture Development Mechanism of Water‐Isolating Soil Layers During Downward Mining of Shallow‐Buried Coal Seam Groups

Energy Science &Engineering, EarlyView.
This study systematically investigates the fracture development mechanisms of water‐isolating soil layers under the coupled effects of repeated mining and groundwater seepage during the downward mining of shallow‐buried coal seams. The findings provide a theoretical basis for evaluating stratum stability and preventing roof water inrush.
Tao Yang, Shuqi Zhang, Jie Zhang, Haifei Lin, Dong Liu, Hui Liu, Yiming Zhang, Jianping Sun   +7 more
wiley   +1 more source

Prediksi Kuat Tekan Beton Agregat Recycled Campuran Air Laut dengan Schmidt Rebound Hammer Test

Rekayasa Sipil, 2023
Nowadays, using recyled aggregate and seawater as replacing natural aggregate and freshwater in mixing have been main priority to be a new concrete construction material.
Lusman Sulaiman, Ispianto, Muhammad Fahrizal Nur, Umar Hamzah Matottorang   +3 more
doaj   +1 more source

Differential Associations Between Relational Health and Mental Health Among Civilian and Military‐Affiliated Samples Reporting Moral Injury

Journal of Counseling &Development, EarlyView.
ABSTRACT The symptoms of anxiety and depression are commonly reported within military‐ and non‐military‐affiliated populations, with considerable evidence available to counselors regarding which relational characteristics function as protective factors among these populations.
A. Stephen Lenz, Jessica Holm, Christine D. Gonzales‐Wong   +2 more
wiley   +1 more source

Performance prediction of roadheaders used in coal mines from the needle penetration index and the schmidt hammer value

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
Coal mine galleries and construction tunnels are commonly excavated using roadheaders. Estimating the performance of roadheaders is crucial for planning and cost estimation when planning tunnel or tunnel projects.
Masoud Rostami, Sair Kahraman, Behnaz Dibavar, Mustafa Fener   +3 more
doaj   +1 more source

COMPARATIVE ANALYSIS AND EVALUATION OF THE CONVERSION FORMULA FOR REBOUND NUMBER OF SCHMIDT HAMMER TEST AND UNCONFINED COMPRESSIVE STRENGTH TEST – CASE STUDY: ANDESITE ROCK SLOPE IN GRAHA PUSPA, LEMBANG FAULT

Rudarsko-geološko-naftni Zbornik
The Unconfined Compressive Strength (UCS) test is one of the most common methods for determining the rock material strength value. However, the size and complexity of the instrument do not allow UCS testing to be carried out in the field.
Antonina Pri Martireni, Wira Cakrabuana, Koko Hermawan, Khori Sugianti, Arifan Jaya Syahbana, Sunarya Wibawa, Eko Soebowo, Adrin Tohari, Hasan Tri Atmojo   +8 more
doaj   +1 more source

New Schmidt hammer exposure‐age dating calibrations for the Last Glacial Termination in NW Scotland: Development and application to undated Torridon Group sandstone surfaces in Wester Ross

Journal of Quaternary Science, EarlyView.
ABSTRACT An understanding of the terrestrial extent, retreat dynamics and climate–glacier coupling of ice masses during the Last Glacial Termination (LGT, ~18–11 ka) is often limited by a fragmentary geomorphological record and is dependent on precise, accurate and robust dating frameworks.
Alastair M. Curry, David Small, Oliver T. Bartlett, Jonathan Newitt   +3 more
wiley   +1 more source

HIGH SELECTIVE OIL SHALE MINING; pp. 305–325 [PDF]

Oil Shale, 2013
Several extraction technologies have been used for mining oil shale in Estonia. The quality and properties of the raw material for fuel and oil depend directly on the initial geological properties of the mineral resource.
VIVIKA VÄIZENE, Ingo Valgma, RIHO ISKÜL, MARGIT KOLATS, MARTIN NURME, VEIKO KARU   +5 more
doaj   +1 more source

Crop landrace conservation, status, challenges and motivations in Great Britain

PLANTS, PEOPLE, PLANET, EarlyView.
Recent agricultural intensification has led to the widespread replacement of genetically diverse crop landraces with high‐yielding but genetically uniform modern cultivars, reducing the adaptive resilience of farming systems. In the United Kingdom, where large‐scale agriculture dominates, landraces require urgent conservation action.
Gabrielle Clarke, Joana Magos Brehm, Michael Ambrose, Abigail Cooke, Eve Eunson, Henry Creissen, Nigel Maxted   +6 more
wiley   +1 more source

The stone in a monumental masonry building of the Tyrrhenian coast (Italy): new data on the relationship between stone properties and structural analysis

Ge-conservación, 2017
In order to assess physical-mechanical properties of building material (“Fuscaldo sandstone”), non-destructive tests have been performed in the main façade of “Palazzo Carelli - Pignatelli” (14th-15th centuries) in Fiumefreddo Bruzio (Italy), situated in
Giulia Forestieri, Alessandro Tedesco, Maurizio Ponte   +2 more
doaj   +1 more source