Results 71 to 80 of about 2,570 (205)
New Zealand Journal of Agricultural Research, Volume 68, Issue 6, Page 1481-1501, December 2025.ABSTRACT Full inversion tillage (FIT) at pasture renewal is a management option aiming to increase carbon stocks in long‐term pasture, to achieve carbon neutrality. This study investigated the effects of FIT on carbon and nutrient distribution in the soil profile (0–7.5, 7.5–15, 15–22.5 and 22.5–30 cm depths) as well as nutrient uptake, and subsequent ...
Yahaya Jebril Amanor +3 more
wiley +1 more source
Drill pipe threaded nipple connection design development [PDF]
, 2015 The paper presents the analysis of the behavior of the drill pipe nipple connection under the additional load generated by power pulses. The strain wave propagation through the nipple thread connection of drill pipes to the bottomhole is studied in this ...
Saruev, Aleksey Lvovich +2 more
core +1 more source
Steerable percussion air drilling system [PDF]
, 1993 The cost-sharing contract between the US Department of Energy and Smith International provides the funding to further develop this concept into two complete steerable percussion air drilling system prototypes, each integrated with a navigation tool (wireline steering tool), a bend sub, stabilizing devices, and to conduct laboratory and field testing ...
Bui, H. D., Oliver, M. S., Gray, M. A.
openaire +2 more sources
Antimicrobial prescribing guidelines for horses in Australia
Australian Veterinary Journal, Volume 103, Issue 12, Page 781-889, December 2025.The growing problem of antimicrobial resistance also affects equine veterinarians with increasing frequency. Antimicrobial stewardship and responsible prescribing are essential for a future in which effective antimicrobials are available, as it is unlikely that new antimicrobials will become available for use in horses.
L Hardefeldt +18 more
wiley +1 more source
Computer simulation of percussive drilling.
Shigen-to-Sozai, 1991 A drilling model which consists of drill-body, piston, rod and bit is presented. The model is based on onedimensional stress-wave theory for piston, rod and bit. A force/penetration relationship with hysteresis is assumed for bit/rock interaction. A computer program based on the model is also developed which allows continuous simulation of drilling ...
Seisuke OKUBO, Yuichi NISHIMATSU
openaire +2 more sources
Clinical Case Reports, Volume 13, Issue 11, November 2025.Removal of extraradicular separated instrument by targeted endodontic microsurgery using the 3D‐Printed guide and trephine. ABSTRACT This case report aimed to present an accurate and minimally invasive approach to retrieve a separated instrument beyond the apical foramen, using a 3‐dimensional (3D) printing guide and trephine bur.
Lin Yang, Liang Chen
wiley +1 more source
Clinical Case Reports, Volume 13, Issue 11, November 2025.ABSTRACT Persistent periradicular lesions in root canal‐treated teeth present a diagnostic challenge, as they may result from failed endodontic treatment, root fracture, or non‐endodontic pathoses. Accurate diagnosis is essential, given the significant differences in their management.
Mehdi Vatanpour, Fatemeh Rezaei
wiley +1 more source
Journal of Rock Mechanics and Geotechnical EngineeringRock and geotechnical engineering investigations involve drilling holes in ground with or without retrieving soil and rock samples to construct the subsurface ground profile.
Wendal Victor Yue +4 more
doaj +1 more source
Energies, 2018 The lower rate of penetration (ROP) is one of the key technical difficulties during drilling of shale reservoirs. Percussive-rotary drilling (PRD) is crucial for increasing ROP.
Guangjian Dong, Ping Chen
doaj +1 more source