Results 51 to 60 of about 333 (189)

Early Implant Placement With Simultaneous Maxillary Sinus Floor Lateral Window Opening in a Patient With Severe Periodontitis: A Case Report With 18‐Month Follow‐Up

Clinical Case Reports, Volume 14, Issue 4, April 2026.
ABSTRACT Standardized periodontal treatment followed by modified transcrestal lateral small‐window sinus elevation and simultaneous early implant placement for severe periodontitis with maxillary bone deficiency/edentulism was safe and feasible at 18‐month follow‐up, resolving bone insufficiency, shortening treatment course and yielding good implant ...
Xiaoyuan Liu, Long Yang, Ling Liu
wiley   +1 more source

Development and Testing of a Jet Assisted Polycrystalline Diamond Drilling Bit. Phase II Development Efforts [PDF]

, 1999
Phase II efforts to develop a jet-assisted rotary-percussion drill bit are discussed. Key developments under this contract include: (1) a design for a more robust polycrystalline diamond drag cutter; (2) a new drilling mechanism which improves ...
Pixton, David S.
core   +1 more source

Power Losses in Energy Generation: Mechanisms, Mitigation Strategies, and Pathways to a Sustainable Future

Energy Technology, Volume 14, Issue 4, April 2026.
This article provides a comprehensive review of loss mechanisms in the generation stage of energy systems, covering fossil, nuclear, and renewable technologies. It examines their environmental and operational implications and shows how overlooking generation losses distorts efficiency assessments.
Pooya Parvizi, Alireza Mohammadi Amidi, Mohammad Reza Zangeneh, Jordi‐Roger Riba, Milad Jalilian   +4 more
wiley   +1 more source

Percussive-Rotary Drilling Machine

Наука и техника, 2003
The paper contains description of percussive-rotary drilling machine which is designed for hole sinking in the process of engineering and geological research. This machine has significantly small dimensions and rather high efficiency in comparison with other world analogues.
G. T. Shiroky, M. A. Litvin
openaire   +1 more source

The Spectroscopic Impact of Sublimation Under Martian Surface Conditions: Implications for Sample Analysis by the Rosalind Franklin Rover and Biosignature Preservation

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract The 2028 ESA/NASA Rosalind Franklin Mission (RFM) will search for signs of past and present life in the shallow subsurface of Mars. It is crucial to understand how minerals and any biosignatures uncovered during these sampling activities might change and be identified under today's Martian conditions.
Louisa J. Preston, Charles H. Minns, Ifigeneia Rousouli, Connor J. Ballard, Sadiazannat Mirdha, Lewis R. Dartnell   +5 more
wiley   +1 more source

Rotary - percussion drilling method - historical review and current possibilities of application [PDF]

Tyt. z nagłówka.Bibliogr. s. [323].'Faster, deeper, cheaper' - it is not just a slogan, it is a motto of every oil company. The first application of rotary-percussion drilling method in drilling oil wells took place in early 60's of the XX century in the
Sapińska-Śliwa, Aneta.
core  

Sourcing carnelian beads from the ancient Mesopotamian site of Kish, Iraq, 2450–2200 BCE: Stylistic, technological and geochemical approaches

Archaeometry, Volume 68, Issue S1, Page S22-S37, April 2026.
Abstract Trade between Mesopotamia and the Indus Civilization is studied through the analysis of Early Dynastic III Period (2600–2350 BCE) carnelian beads from the site of Kish, Iraq. Morphological and technological features of the beads are compared with beads from the Indus region.
J. Mark Kenoyer, Randall W. Law, Laure Dussubieux   +2 more
wiley   +1 more source

Drilling Within the Critical Zone

Hydrological Processes, Volume 40, Issue 3, March 2026.
This review synthesises 30 years of critical zone drilling methodologies for studying subsurface weathering, water storage, and biogeochemical processes. We evaluate drilling techniques, sampling strategies, downhole logging, and long‐term monitoring approaches while addressing contamination control and core preservation challenges.
Amanda Donaldson, Russell P. Callahan, W. Jesse Hahm, David N. Dralle, Anders Noren, Rachel E. Breunig, Berit M. Hudson Rasmussen, Laura V. Krone, Susan L. Brantley, A. Joshua West, Lin Ma, Clifford S. Riebe, Margaret Zimmer, Ashlee Dere, Daniella Rempe   +14 more
wiley   +1 more source

Automatic monitoring of rotary-percussive drilling for ground characterization-illustrated by a case example in Hong Kong [PDF]

, 2004
In mountainous regions comprising weathered soils and rocks, it is important to delineate the spatial distributions of geomaterials with different weathering and decomposition grades in depth.
Yue, ZQ, Z.Q. Yue, Lee, CF, C.F. Lee, Tham, LG, K.T. Law, L.G. Tham, Law, KT   +7 more
core   +1 more source

Quantifying Gas and Thermal Energy Emissions in an Active Geothermal Area: Insights From Le Biancane (Larderello Field, Italy)

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 3, March 2026.
Abstract The Larderello‐Travale area in the northern Apennines of Italy hosts the world's oldest exploited geothermal field. Its success lies primarily in the presence of an extraordinary geothermal resource housed in a large vapor‐dominated fractured reservoir that produces superheated steam.
D. Granieri, M. Cerminara, F. Mazzarini, R. Novellino, M. Trolese, E. Dallara, M. Lelli   +6 more
wiley   +1 more source