Results 31 to 40 of about 2,021,478 (258)
Migration Characteristics of Boring Mud in Roadway Floor Anchor Wire Hole and Test in Coal Mine
Advances in Civil Engineering, 2021 Given the difficulty in drilling the anchor holes in the roadway floor of the coal mine, the characteristics of slag movement in the process of positive and negative circulation drilling are analyzed.
Hui Zhang +5 more
doaj +1 more source
IEEE Access, 2021 In the present article, mathematical analysis of drilling system with reverse air circulation is presented by a novel hybrid technique of feedforward artificial neural network (ANN) and biogeography based cuckoo search (BHCS) algorithm. A series solution
Ashfaq Ahmad +4 more
semanticscholar +1 more source
Majalah Kardiologi Indonesia, 2021 Background: Coronary collateral circulation (CCC) is linked to myocardial remodeling severity in patients with chronic ischaemic heart disease (IHD). However its effect on left ventricular reverse remodeling (LVRR) in patients with chronic IHD underwent ...
Ignatius Faizal Yuwono
doaj +1 more source
Sealing method and experimental study of large-diameter reverse circulation hole hammer [PDF]
E3S Web of ConferencesA reliable sealing structure is the key to achieving reverse circulation drilling technology for large- diameter reverse circulation down the hole hammers, and it is also a difficult point in the design of large- diameter reverse circulation down the ...
Liu Qi
doaj +1 more source
Water-air ejector with conical-cylindrical mixing chamber
Acta Polytechnica, 2021 In the paper, the hydrodynamics of the liquid-gas mixture in the mixing chamber of the ejectors at different spatial positions was analyzed and the comparative study of such ejectors was carried out.
Andrii Sliusenko +2 more
doaj +1 more source
The role and implications of mammalian cellular circadian entrainment
FEBS Letters, EarlyView.At their most fundamental level, mammalian circadian rhythms occur inside every individual cell. To tell the correct time, cells must align (or ‘entrain’) their circadian rhythm to the external environment. In this review, we highlight how cells entrain to the major circadian cues of light, feeding and temperature, and the implications this has for our
Priya Crosby
wiley +1 more source
Journal of Marine Science and Engineering, 2022 Ice core drilling with air reverse circulation is a promising technology that uses high-speed airflow to transport the ice core from the bottom of the hole along the central passage of the drill pipe to the surface.
Mengke Wang +5 more
doaj +1 more source
Mechanisms of parasite‐mediated disruption of brain vessels
FEBS Letters, EarlyView.Parasites can affect the blood vessels of the brain, often causing serious neurological problems. This review explains how different parasites interact with and disrupt these vessels, what this means for brain health, and why these processes matter. Understanding these mechanisms may help us develop better ways to prevent or treat brain infections in ...
Leonor Loira +3 more
wiley +1 more source
The newfound relationship between extrachromosomal DNAs and excised signal circles
FEBS Letters, EarlyView.Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley +1 more source
The influence of direct intramuscular corticosteroid therapy on parameters of venous circulation in hypoxaemic fetuses [PDF]
Srpski Arhiv za Celokupno Lekarstvo, 2007 Introduction: The influence of glucocorticosteroid therapy on fetal lung maturation is evident but little is known about its effects on parameters of fetal venous circulation. Objective.
Babović Ivana +4 more
doaj +1 more source