Results 71 to 80 of about 6,338 (225)

Retinal oxygen saturation and retinal vessel diameter in glaucoma patients before and after trabeculectomy

Acta Ophthalmologica, EarlyView.
Abstract Purpose To compare retinal vessel oxygen saturations and diameters before, 1 and 3 months after trabeculectomy. Methods Retinal oxygen saturations and vessel diameters were obtained using retinal oximetry. The effect of the postoperative intraocular pressure (IOP) decrease on the arteriovenous difference (AV‐difference) was evaluated ...
S. Kemp, A. Ahmadzadeh, B. Schmidt, O. N. Klefter, L. Kessel, D. Bach‐Holm   +5 more
wiley   +1 more source

Hammer Time: Using the Schmidt Hammer to Improve the Forecasting Accuracy of the Rockfall Activity Index (RAI) [PDF]

69A3551747110The Schmidt hammer is a widely used and inexpensive instrument for estimating rock strength either in the lab or in the field. Our research team tested the accuracy and repeatability of the Schmidt hammer to estimate rock strength on six ...
Pacific Northwest Transportation Consortium (PacTrans) (UTC), University of Washington. University Transportation Center for Region 10, University of Alaska Fairbanks, Darrow, Margaret M., Herrman, Daisy M   +4 more
core  

Junctional sensitivity and atrophy progression rate of geographic atrophy secondary to age‐related macular degeneration

Acta Ophthalmologica, EarlyView.
Abstract Purpose To determine the relationship between the baseline junctional retinal sensitivity measured with microperimetry and the atrophy progression rate in eyes with geographic atrophy (GA) secondary to age‐related macular degeneration. Methods In this prospective cohort study, patients with GA were examined with fundus autofluorescence (FAF ...
Alexander Kai Thomsen, Jenni Martinez Villarruel Hinnerskov, Miranda Maung, Aubin Mutschler, SriniVas Sadda, Torben Lykke Sørensen   +5 more
wiley   +1 more source

Bio-deterioration of stone and concrete by Melanopsis praemorsa in Gan-HaShlosha national park—A case study

Case Studies in Construction Materials, 2020
Gan HaShlosha national park contain two ponds of running brackish water. Dams were built on the ponds in the 80 s. Some masonary from the dams, as well as other underwater structure, have deteriorated.
Amit Kenny
doaj   +1 more source

Use of the Schmidt hammer for testing weak rock

, 2007
A Schmidt hammer, also known as a Swiss hammer or a rebound hammer, is a device to measure the elastic properties or strength of concrete or rock, mainly surface hardness and penetration ...
Mohamad, Edy Tonnizam, Kassim, Khairul Anuar   +1 more
core  

Out in the cold? A review of Early Middle Palaeolithic settlements in northern Central Europe, age data and geological preconditions for site formation and preservation

Boreas, EarlyView.
The characteristics of settlement of Neanderthals in northern Central Europe during the earlier phases of the Middle Palaeolithic (Marine Isotope Stage 8–6) have been a matter of debate for decades, specifically regarding the population dynamics at such latitudes during the coldest phases. In this paper, we review the known archaeological record of the
Gianpiero Di Maida, Jutta Winsemann, Malte Hoffmann, Tobias Lauer, Utz Böhner, Thomas Terberger   +5 more
wiley   +1 more source

The Laser Scanner Technique: A Tool for Determining Shear Strength Parameters of Rock Mass Discontinuities

Applied Sciences
When evaluating the shear strength of rock mass discontinuities, certain challenges arise due to the difficulty in quantifying the roughness characteristics of surfaces and the strength of asperities.
Margherita Zimbardo, Alessandra Nocilla, Anna Scotto di Santolo   +2 more
doaj   +1 more source

Refining the timing of Middle Pleistocene (MIS 12 to MIS 6) ice advances into northern central Europe: sedimentological analysis and single‐grain luminescence dating of glaciotectonic complexes and tunnel‐valley fills

Boreas, EarlyView.
We summarize the current state of knowledge on the age of the Middle Pleistocene ice advances into northern central Europe and provide 25 new single‐grain feldspar luminescence ages of Elsterian and Saalian glacigenic sediments to constrain the age of the ice advances and their tentative correlation with marine isotope stages/substages.
Niklas von Soest, Neda Rahimzadeh, Debra Colarossi, Falko Malis, Tobias Lauer, Wera Sander‐Beuermann, Yvonne Spychala, Christian Brandes, Runa Fälber, Sumiko Tsukamoto, Jutta Winsemann   +10 more
wiley   +1 more source

Schmidt Hammer Rebound' users guide: IBM-PC/AT computer calculation of uniaxial compressive strength using the Schmidt Hammer

, 1986
Le présent rapport décrit le programme "Rebond du marteau de Schmidt" (Schmidt Hammer Rebound) qui permet de calculer la résistance à la compression uniaxiale de la roche à l'aide de nombres-indices du rebond du marteau de Schmidt. Ce programme est écrit en langage BASIC A Version 3,10 pour un ordinateur IBM-PC/AT.
M Issard, T R C Aston
openaire   +1 more source

Drilling the Marathousa palaeo‐lake in Greece (Peloponnese): inferring the environmental context of a Middle Pleistocene archaeological site

Boreas, EarlyView.
The Megalopolis Basin is located in the central Peloponnese (Greece), a region that is situated along one of the primary Pleistocene biogeographical corridors for intracontinental hominin migration. The basin comprises several hundred metres of Plio‐Pleistocene sediments alternating between clastics and lignites.
Ines J. E. Bludau, Bernd Wagner, Uwe Kirscher, Maria Schindler, Charlotte Zachow, Johannes Schmidt, Niklas Leicher, Giovanni Muttoni, Serena Perini, Vangelis Tourloukis, Eleni Panagopoulou, Panagiotis Karkanas, Katerina Harvati, Annett Junginger   +13 more
wiley   +1 more source