Results 41 to 50 of about 1,733 (262)

Import Wheat Tenders and the Effects of the Russian Invasion

Agribusiness, EarlyView.
ABSTRACT Risk and volatility for many commodities escalated sharply following the Russian invasion of Ukraine, creating numerous uncertainties for trading firms and importers. The purpose of this study is to analyze the bidding behavior in Egyptian wheat import tenders in the pre‐ and post‐invasion periods.
William W. Wilson, Sumadhur Shakya, Isaac Dubovoy   +2 more
wiley   +1 more source

Advancing Cave Survey Methods: High‐Precision Mapping in Drakotrypa Cave, Greece

Archaeological Prospection
ABSTRACT Cave floor mapping plays a vital role across various scientific disciplines by enabling the identification and interpretation of features shaped by both natural processes and human activity. In cave archaeology, floor mapping is crucial to decode and reconstruct human‐induced morphological features.
Christos Pennos, Fotis Georgiadis, Sofia Pechlivanidou, Rannveig Ø. Skoglund, Nenad Buzjak, Stein‐ Erik Lauritzen   +5 more
openaire   +1 more source

“Intrapericardial Approach” for Venous Outflow Reconstruction in Living‐Donor Liver Transplantation for Budd‐Chiari Syndrome: Surgical Techniques and LongTerm Outcomes

Annals of Gastroenterological Surgery, EarlyView.
Unlike deceased‐donor liver transplantation, living‐donor liver transplantation (LDLT) for Budd‐Chiari Syndrome (BCS) presents distinctive challenges in hepatic venous (HV)‐outflow reconstruction because diseased HV–inferior vena cava (IVC) cannot be entirely replaced with healthy donor vessels.
Koichiro Hata, Tetsuya Tajima, Satoshi Ogiso, Shinji Uemoto, Etsuro Hatano   +4 more
wiley   +1 more source

Research on active roof control space of fully mechanized caving support based on motion posture perception

Meitan xuebao
The fully mechanized top-coal caving support is a critical device that serves both as a support mechanism and an active means for top-coal caving in fully mechanized top-coal caving mining operations.
Qingliang ZENG, Xiaowan LEI, Zhaosheng MENG, Lirong WAN, Xinliang BAN, Yulong HU   +5 more
doaj   +1 more source

Numerical Investigation on Stratum and Surface Deformation in Underground Phosphorite Mining Under Different Mining Methods

Frontiers in Earth Science, 2022
With the ending of deep-concave open-pit phosphorite extractions and gradual exhausting of shallow mineral resources, stoping of phosphorite seams has entered or will enter into underground mining.
Xiaoshuang Li, Xiaoshuang Li, Yunmin Wang, Yunjin Hu, Changbing Zhou, He Zhang   +5 more
doaj   +1 more source

Origin, evolution and biogeographic dynamics of the European rabbit (Oryctolagus cuniculus) in Southwestern Europe

The Anatomical Record, EarlyView.
Abstract The Pleistocene is a key period for understanding the evolutionary history and palaeobiogeography of the European rabbit (Oryctolagus cuniculus). The species was first documented in southeastern Iberia at the beginning of the Middle Pleistocene and appears to have rapidly spread throughout Southwestern Europe, where it was found in numerous ...
Maxime Pelletier
wiley   +1 more source

Optimization of Caving Technology in an Extrathick Seam with Longwall Top Coal Caving Mining

Advances in Materials Science and Engineering, 2021
The optimization of top coal caving technology is an efficient method to improve the recovery ratio in longwall top coal caving (LTCC). In extrathick coal seams, the conventional single-opening sequential caving technology (SOSCT) shows the following ...
Liu Yang, Lianghui Li, Weijie Wei
doaj   +1 more source

New techniques for old bones: Morphometric and diffeomorphometric analysis of the bony labyrinth of the Reilingen and Ehringsdorf Neandertals

The Anatomical Record, EarlyView.
Abstract Neandertals are known to possess very distinctive traits in their bony labyrinth morphology, such as an inferiorly positioned posterior canal and a very low number of turns in the cochlea. Hence, the inner ear has been often used to assess the Neandertal status of fragmentary fossils.
Alessandro Urciuoli, Julia Diez‐Valero, Ignacio Martínez, Rolf Quam, Brian A. Keeling, Nicole M. Webb, Mercedes Conde‐Valverde   +6 more
wiley   +1 more source

Technology Research on the Fourth Panel Mining Large Height Fully-mechanized Caving Mining in Shangwan Coal Mine

MATEC Web of Conferences, 2015
According to the characteristics of the 1-2 coal seam of Shangwan coal mine 4th panel, this research analyzed the feasibility of sublevel caving hydraulic support in the fully-mechanized mining face through estimation method and numerical simulation ...
Liu Yingjie, Wang Xiaomou
doaj   +1 more source

Unfused transverse foramen of the atlas vertebra in the Neandertal lineage fossils

The Anatomical Record, EarlyView.
Abstract In anatomically modern humans, the atlas can display an unfused transverse foramen (UTF) but currently the presence of UTF in the Neandertal lineage is uncertain due to a scarcity of prevalence studies and no exhaustive record of its presence throughout the entire hominin fossil record.
Asier Gómez‐Olivencia, Mikel Arlegi, Juan José Valenzuela‐Fuenzalida, Mathias Orellana‐Donoso, Juan Luis Arsuaga, Juan A. Sanchis‐Gimeno   +5 more
wiley   +1 more source