keyword
MENU ▼
Read by QxMD icon Read
search

drilling

keyword
https://www.readbyqxmd.com/read/28740999/advanced-cardiac-life-support-2016-singapore-guidelines
#1
Chi Keong Ching, Siew Hon Benjamin Leong, Siang Jin Terrance Chua, Swee Han Lim, Kenneth Heng, Sohil Pothiawala, Venkataraman Anantharaman
The main areas of emphasis in the Advanced Cardiac Life Support (ACLS) guidelines are: early recognition of cardiac arrest and call for help; good-quality chest compressions; early defibrillation when applicable; early administration of drugs; appropriate airway management ensuring normoventilation; and delivery of appropriate post-resuscitation care to enhance survival. Of note, it is important to monitor the quality of the various care procedures. The resuscitation team needs to reduce unnecessary interruptions to chest compressions in order to maintain adequate coronary perfusion pressure during the ACLS drill...
July 2017: Singapore Medical Journal
https://www.readbyqxmd.com/read/28739106/drilling-discharges-reduce-sediment-reworking-of-two-benthic-species
#2
Hilde Cecilie Trannum
Effects of water-based drill cuttings on sediment reworking activity were studied on two important benthic bioturbators (the bivalve Abra segmentum and the brittle star Amphiura filiformis) using thin aquaria, fluorescent-dyed sediment particles (luminophores), time lapse photography and image analysis. In the present context, sediment reworking activity was measured as maximum mixing depth and total amount of luminophores transported below the sediment-water interface. There was a significant reduction in the amount of downward transported luminophores in drill cuttings treatments compared to controls with added natural sediments for both species, which also was true regarding maximum mixing depth for A...
July 21, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28737674/pinhole-zone-plate-lens-for-ultrasound-focusing
#3
Constanza Rubio, José Miguel Fuster, Sergio Castiñeira-Ibáñez, Antonio Uris, Francisco Belmar, Pilar Candelas
The focusing capabilities of a pinhole zone plate lens are presented and compared with those of a conventional Fresnel zone plate lens. The focusing properties are examined both experimentally and numerically. The results confirm that a pinhole zone plate lens can be an alternative to a Fresnel lens. A smooth filtering effect is created in pinhole zone plate lenses, giving rise to a reduction of the side lobes around the principal focus associated with the conventional Fresnel zone plate lens. The manufacturing technique of the pinhole zone plate lens allows the designing and constructing of lenses for different focal lengths quickly and economically and without the need to drill new plates...
July 22, 2017: Sensors
https://www.readbyqxmd.com/read/28733333/method-development-for-container-closure-integrity-evaluation-via-headspace-gas-ingress-by-using-frequency-modulation-spectroscopy
#4
Ken G Victor, Lauren Levac, Michael Timmins, James Veale
USP <1207.1> Section 3.5 states that "A deterministic leak test method having the ability to detect leaks at the product's maximum allowable leakage limit is preferred when establishing the inherent integrity of a container-closure system." Ideally, container closure integrity (CCI) of parenteral packaging would be evaluated by measuring a physical property that is sensitive to the presence of any package defect that breaches package integrity by increasing its leakage above its maximum allowable leakage limit (MALL)...
July 20, 2017: PDA Journal of Pharmaceutical Science and Technology
https://www.readbyqxmd.com/read/28731819/the-close-up-imager-onboard-the-esa-exomars-rover-objectives-description-operations-and-science-validation-activities
#5
Jean-Luc Josset, Frances Westall, Beda A Hofmann, John Spray, Charles Cockell, Stephan Kempe, Andrew D Griffiths, Maria Cristina De Sanctis, Luigi Colangeli, Detlef Koschny, Karl Föllmi, Eric Verrecchia, Larryn Diamond, Marie Josset, Emmanuelle J Javaux, Francesca Esposito, Matthew Gunn, Audrey L Souchon-Leitner, Tomaso R R Bontognali, Oleg Korablev, Suren Erkman, Gerhard Paar, Stephan Ulamec, Frédéric Foucher, Philippe Martin, Antoine Verhaeghe, Mitko Tanevski, Jorge L Vago
The Close-Up Imager (CLUPI) onboard the ESA ExoMars Rover is a powerful high-resolution color camera specifically designed for close-up observations. Its accommodation on the movable drill allows multiple positioning. The science objectives of the instrument are geological characterization of rocks in terms of texture, structure, and color and the search for potential morphological biosignatures. We present the CLUPI science objectives, performance, and technical description, followed by a description of the instrument's planned operations strategy during the mission on Mars...
June 2017: Astrobiology
https://www.readbyqxmd.com/read/28731817/infrared-spectrometer-for-exomars-a-mast-mounted-instrument-for-the-rover
#6
Oleg I Korablev, Yurii Dobrolensky, Nadezhda Evdokimova, Anna A Fedorova, Ruslan O Kuzmin, Sergei N Mantsevich, Edward A Cloutis, John Carter, Francois Poulet, Jessica Flahaut, Andrew Griffiths, Matthew Gunn, Nicole Schmitz, Javier Martín-Torres, Maria-Paz Zorzano, Daniil S Rodionov, Jorge L Vago, Alexander V Stepanov, Andrei Yu Titov, Nikita A Vyazovetsky, Alexander Yu Trokhimovskiy, Alexander G Sapgir, Yurii K Kalinnikov, Yurii S Ivanov, Alexei A Shapkin, Andrei Yu Ivanov
ISEM (Infrared Spectrometer for ExoMars) is a pencil-beam infrared spectrometer that will measure reflected solar radiation in the near infrared range for context assessment of the surface mineralogy in the vicinity of the ExoMars rover. The instrument will be accommodated on the mast of the rover and will be operated together with the panoramic camera (PanCam), high-resolution camera (HRC). ISEM will study the mineralogical and petrographic composition of the martian surface in the vicinity of the rover, and in combination with the other remote sensing instruments, it will aid in the selection of potential targets for close-up investigations and drilling sites...
June 2017: Astrobiology
https://www.readbyqxmd.com/read/28731399/expanding-the-endoscopic-transpterygoid-corridor-to-the-petroclival-region-anatomical-study-and-volumetric-comparative-analysis
#7
Jacob L Freeman, Raghuram Sampath, Steven Craig Quattlebaum, Michael A Casey, Zach A Folzenlogen, Vijay R Ramakrishnan, A Samy Youssef
OBJECTIVE The endoscopic endonasal transmaxillary transpterygoid (TMTP) approach has been the gateway for lateral skull base exposure. Removal of the cartilaginous eustachian tube (ET) and lateral mobilization of the internal carotid artery (ICA) are technically demanding adjunctive steps that are used to access the petroclival region. The gained expansion of the deep working corridor provided by these maneuvers has yet to be quantified. METHODS The TMTP approach with cartilaginous ET removal and ICA mobilization was performed in 5 adult cadaveric heads (10 sides)...
July 21, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28730168/bone-tunnel-impaction-reduced-the-tibial-tunnel-enlargement
#8
Huan Xu, Rongzong Zheng, Jinhe Ying
The purpose of this study was to investigate whether the bone tunnel impaction technique performed by dilators could dwindle the tibial tunnel enlargement after anterior cruciate ligament (ACL) reconstruction with hamstring tendon using both extracortical suspensory fixation devices at femoral and tibial site. Thirty-one consecutive patients undergoing primary ACL reconstruction with the hamstring autograft were enrolled in this research. Patients were randomly allotted to group A (bone tunnel impaction technique using dilators) or group B (regular extraction bone tunnel drilling)...
2017: Open Medicine (Warsaw, Poland)
https://www.readbyqxmd.com/read/28729762/combination-of-bone-marrow-mesenchymal-stem-cells-and-cartilage-fragments-contribute-to-enhanced-repair-of-osteochondral-defects
#9
Mohammed Abbas
Cartilage tissue engineering using stem cells and biomaterials is considered a promising approach despite poor outcomes. We hypothesise that articular cartilage fragments provides native environmental cues to enhance stem cell differentiation. As such we evaluated the chondrogenic differentiation and repair of critical size defect in a human explant osteochondral model (OD) using bone marrow derived mesenchymal stem cells (BM-MSCs) and homogenised cartilage. BM-MSCs were established from the bone-marrow plugs of patients undergoing total knee arthroplasty and characterized...
2017: Bioinformation
https://www.readbyqxmd.com/read/28728078/femoral-head-necrosis-a-finite-element-analysis-of-common-and-novel-surgical-techniques
#10
Myriam Cilla, Sara Checa, Bernd Preininger, Tobias Winkler, Carsten Perka, Georg N Duda, Matthias Pumberger
BACKGROUND: Femoral head necrosis is a common cause of secondary osteoarthritis. At the early stages, treatment strategies are normally based on core decompression techniques, where the number, location and diameter of the drilling holes varies depending on the selected approach. The purpose of this study was to investigate the risk of femoral head, neck and subtrochanteric fracture following six different core decompression techniques. MATERIALS: Five common and a newly proposed techniques were analyzed in respect to their biomechanical consequences using finite element analysis...
July 6, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28725963/robot-assisted-surgery-for-mandibular-angle-split-osteotomy-using-augmented-reality-preliminary-results-on-clinical-animal-experiment
#11
Chaozheng Zhou, Ming Zhu, Yunyong Shi, Li Lin, Gang Chai, Yan Zhang, Le Xie
Mandibular angle split osteotomy (MASO) is a procedure widely used for prominent mandibular angles. However, conventional mandibular plastic surgery is invasive and high risk. It may induce postoperative neurosensory disturbance of the inferior alveolar nerve, fractures and infection due to the complexity of the anatomical structure and the narrow surgical field of view. The success rate of MASO surgery usually depends on the clinical experience and skills of the surgeon. To evaluate the performance of inexperienced plastic surgeons conducting this surgery, a self-developed and constructed robot system based on augmented reality is used...
July 19, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28725919/accurate-guide-wire-of-lag-screw-placement-in-the-intertrochanteric-fractures-a-technical-note
#12
Jiang Li, Liao Wang, Xiaodong Li, Kai Feng, Jian Tang, Xiaoqing Wang
Cephalomedullary fixations are commonly used in the treatment of intertrochanteric fractures. In clinical practice, one of the difficulties is when we exit the guide wire in a wrong position of femoral neck and insert near the hole again, the guide wire often flow into the previous track. This study develops a surgical technique to direct the guide wire to slip away the previous track and slip into a right position. When guide wire is exited to the cortex of femoral, we let the wire in and out at the cortical layer for several times to enlarge the entry hole...
July 19, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28725513/facial-nerve-schwannomas-mimicking-as-vestibular-schwannomas
#13
Beth N McNulty, Sean Wise, David S Cohen, Jason Bell, Dennis Bojrab, Michael LaRouere, Matthew Kircher, Seilesh Babu
Objective  The objective of this study was to identify preoperative and intraoperative findings that may aid in distinguishing facial nerve schwannomas (FNS) from vestibular schwannomas (VSs), particularly in cases limited to the internal auditory canal (IAC) and cerebellopontine angle (CPA). Study Design  This was a retrospective study. Setting  This study was set at a Tertiary Referral Center. Patients  Seventeen cases from October 2002 to July 2015 with an IAC/CPA mass presumed to be a VS who were found to have a FNS intraoperatively...
August 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28723755/comparison-of-free-hand-fluoroscopic-guidance-and-electromagnetic-navigation-in-distal-locking-of-femoral-intramedullary-nails
#14
Bing Han, Zhigang Shi, Yu Fu, Yong Ye, Juehua Jing, Jun Li
BACKGROUND: Although the method has been used widely, one of the greatest challenges for intramedullary nailing is to position the distal locking screw. A new technology, the electromagnetic navigation system, is a radiation-free way to locate the position of the drill bit and provide 3-dimensional real-time feedback of location and orientation of the drill bit relative to the locking holes. The purpose of our study was to evaluate the reliability and efficiency of the free-hand technique compared to the new electromagnetic navigation system...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28723609/failure-analysis-of-eleven-gates-glidden-drills-that-fractured-intraorally-during-post-space-preparation-a-retrieval-analysis-study
#15
Youssef S Al Jabbari, Raymond Fournelle, Sara M Al Taweel, Spiros Zinelis
The purpose of this study was to determine the failure mechanism of clinically failed Gates Glidden (GG) drills. Eleven retrieved GG drills (sizes #1 to #3) which fractured during root canal preparation were collected and the fracture location was recorded based on macroscopic observation. All fracture surfaces were investigated by a SEM. Then the fractured parts were embedded in acrylic resin and after metallographic preparation, the microstructure and elemental composition was evaluated by SEM and EDS. The Vickers hardness (HV) of all specimens was also determined...
July 19, 2017: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/28723146/generalized-noise-study-of-solid-state-nanopores-at-low-frequencies
#16
Chenyu Wen, Shuangshuang Zeng, Kai Arstila, Timo Sajavaara, Yu Zhu, Zhen Zhang, Shi-Li Zhang
Nanopore technology has been extensively investigated for analysis of biomolecules, and a success story in this field concerns DNA sequencing using a nanopore chip featuring an array of hundreds of biological nanopores (BioNs). Solid-state nanopores (SSNs) have been explored to attain longer lifetime and higher integration density than what BioNs can offer, but SSNs are generally considered to generate higher noise whose origin remains to be confirmed. Here, we systematically study low-frequency (including thermal and flicker) noise characteristics of SSNs measuring 7 to 200 nm in diameter drilled through a 20-nm-thick SiNx membrane by focused ion milling...
February 24, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28723139/sensitive-cytokine-assay-based-on-optical-fiber-allowing-localized-and-spatially-resolved-detection-of-interleukin-6
#17
Guozhen Liu, Kaixin Zhang, Annemarie Nadort, Mark R Hutchinson, Ewa M Goldys
We demonstrated a cytokine detection device based on gold nanoparticle modified silica optical fiber for the monitoring of locally variable cytokine interleukin-6 (IL-6) concentrations using a sandwich immunoassay scheme. The fiber is designed to be introduced into an intrathecal catheter with micrometer-sized holes drilled along its length to enable fluid exchange between the outside and inside of the catheter. An exposed optical fiber (diameter 125 μm) modified with a layer of gold nanoparticles was functionalized with the IL-6 capture antibody to form the sensing interface...
February 24, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28721590/high-non-anatomic-tunnel-position-rates-in-acl-reconstruction-failure-using-both-transtibial-and-anteromedial-tunnel-drilling-techniques
#18
Vera Jaecker, Tabea Zapf, Jan-Hendrik Naendrup, Thomas Pfeiffer, Ajay C Kanakamedala, Arasch Wafaisade, Sven Shafizadeh
INTRODUCTION: Although it is well known from cadaveric and biomechanical studies that transtibial femoral tunnel (TT) positioning techniques are associated with non-anatomic tunnel positions, controversial data exist as so far no clinical differences could have been found, comparing transtibial with anteromedial techniques (AM). The purpose of the study was to analyze if graft failure following TT ACL reconstruction was more commonly associated with non-anatomic tunnel position in comparison with the AM technique...
July 18, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28719995/biomechanics-of-the-proximal-radius-following-drilling-of-the-bicipital-tuberosity-to-mimic-cortical-button-distal-biceps-repair-technique
#19
Nikhil R Oak, John R Lien, Alexander Brunfeldt, Jeffrey N Lawton
BACKGROUND: A fracture through the proximal radius is a theoretical concern after cortical button distal biceps fixation in an active patient. The permanent, nonossified cortical defect and medullary tunnel is at risk during a fall eliciting rotational and compressive forces. We hypothesized that during simulated torsion and compression, in comparison with unaltered specimens, the cortical button distal biceps repair model would have decreased torsional and compressive strength and would fracture in the vicinity of the bicipital tuberosity bone tunnel...
March 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28719551/annulus-fibrosus-repair-using-high-density-collagen-gel-an-in-vivo-ovine-model
#20
Brenton Pennicooke, Ibrahim Hussain, Connor Berlin, Stephen R Sloan, Brandon Borde, Yu Moriguchi, Gernot Lang, Rodrigo Navarro-Ramirez, Jonathan Cheetham, Lawrence J Bonassar, Roger Härtl
STUDY DESIGN: Ovine in vivo study. OBJECTIVE: To perform lateral approach lumbar surgery in an ovine model to administer an injectable riboflavin (RF) cross-linked high-density collagen (HDC) gel and to assess its ability to mitigate intervertebral disc (IVD) degeneration after induced annulus fibrosus (AF) injury. SUMMARY OF BACKGROUND DATA: Biological-based injectable gels have shown efficacy in restoring biomechanical, radiographic, and histological parameters in IVD-injured animal models...
July 17, 2017: Spine
keyword
keyword
74473
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"