Results 371 to 380 of about 28,680,650 (409)
Some of the next articles are maybe not open access.
International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1973
A series of full-scale field drilling tests has shown that high-pressure bits operating at pressures of 10,000 to 15,000 psi can drill many formations two to three times faster than can conventional bits. High-pressure drills can effect significant savings where drilling costs are high, such as in deep land wells, in arctic areas, and offshore.
William W. Love +2 more
openaire +3 more sources
A series of full-scale field drilling tests has shown that high-pressure bits operating at pressures of 10,000 to 15,000 psi can drill many formations two to three times faster than can conventional bits. High-pressure drills can effect significant savings where drilling costs are high, such as in deep land wells, in arctic areas, and offshore.
William W. Love +2 more
openaire +3 more sources
Hydrostaticity of pressure-transmitting media for high pressure infrared spectroscopy
High Pressure Research, 2019Ensuring hydrostatic conditions in high pressure experiments is of utmost importance for obtaining reproducible and comparable dataset. Here, we investigate the degree of hydrostaticity of four pressure-transmitting media (PTM), three alkali halides and ...
A. Celeste +2 more
semanticscholar +1 more source
Survey of Ophthalmology, 2023
An 8-year-old boy presented with acute visual loss in the right eye and nausea, vomiting, and diplopia. Imaging revealed a right orbital apex mass. Biopsy showed Langerhans cell histiocytosis (LCH), and the patient was diagnosed with isolated orbital LCH causing an orbital apex syndrome. A 12-month cytarabine chemotherapy course was begun, during which
Matthew J. Miller +3 more
openaire +2 more sources
An 8-year-old boy presented with acute visual loss in the right eye and nausea, vomiting, and diplopia. Imaging revealed a right orbital apex mass. Biopsy showed Langerhans cell histiocytosis (LCH), and the patient was diagnosed with isolated orbital LCH causing an orbital apex syndrome. A 12-month cytarabine chemotherapy course was begun, during which
Matthew J. Miller +3 more
openaire +2 more sources
Chemical Society Reviews, 2006
Chemistry involves the study of the reactions and properties of the elements and their compounds. After over two centuries of systematic chemical research, combined with the modern use of spectroscopy and diffraction methods to determine structure and valence states and detailed quantum mechanical investigations of interatomic bonding; it is now ...
Paul F. McMillan, Paul F. McMillan
openaire +3 more sources
Chemistry involves the study of the reactions and properties of the elements and their compounds. After over two centuries of systematic chemical research, combined with the modern use of spectroscopy and diffraction methods to determine structure and valence states and detailed quantum mechanical investigations of interatomic bonding; it is now ...
Paul F. McMillan, Paul F. McMillan
openaire +3 more sources
High-Pressure Crystallography [PDF]
, 2011 The ability of pressure to change inter-atomic distances strongly leads to a wide range of pressure-induced phenomena at high pressures: for example metallisation, amorphisation, superconductivity and polymerisation. Key to understanding these phenomena is the determination of the crystal structure using x-ray or neutron diffraction.
openaire +2 more sources
High pressure rheology for high pressure lubrication: A review
Journal of Rheology, 1990High pressure lubrication, also called elastohydrodynamic lubrication (EHL) is a branch of tribology which has been considerably developed since 1960. Mechanisms running under this regime are characterized by high contact pressures (≳0.7 GPa) and very high values (up to 4 GPa) are now found.
Ph. Vergne, D. Berthe
openaire +2 more sources
Microbial inactivation by high-pressure
The Journal of Supercritical Fluids, 2002Abstract High-pressure treatments are receiving a great deal of attention for the inactivation of micro-organisms in foodstuff processing, pressure instead of temperature is used as stabilizing factor. In this context, high hydrostatic pressure treatment is the most studied alternative process, many works reported successful results in inactivating a
SPILIMBERGO, SARA +2 more
openaire +7 more sources
Bacterial inactivation by high-pressure homogenisation and high hydrostatic pressure
International Journal of Food Microbiology, 2002The resistance of five gram-positive bacteria, Enterococcus faecalis, Staphylococcus aureus, Lactobacillus plantarum, Listeria innocua and Leuconostoc dextranicum, and six gram-negative bacteria, Salmonella enterica serovar typhimurium, Shigella flexneri, Yersinia enterocolitica, Pseudomonas fluorescens and two strains of Escherichia coli, to high ...
Ann M.J. Diels +2 more
openaire +3 more sources
Biomacromolecules, 2007
Toward exploiting the attractive mechanical properties of cellulose I nanoelements, a novel route is demonstrated, which combines enzymatic hydrolysis and mechanical shearing.
M. Pääkkö +10 more
semanticscholar +1 more source
Toward exploiting the attractive mechanical properties of cellulose I nanoelements, a novel route is demonstrated, which combines enzymatic hydrolysis and mechanical shearing.
M. Pääkkö +10 more
semanticscholar +1 more source
Archives of Internal Medicine, 1997
Racial and ethnic minority populations are growing segments of our society. The prevalence of hypertension in these populations differs across groups, and control rates are not as good as in the general population.
S. Sheps
semanticscholar +1 more source
Racial and ethnic minority populations are growing segments of our society. The prevalence of hypertension in these populations differs across groups, and control rates are not as good as in the general population.
S. Sheps
semanticscholar +1 more source