keyword
MENU ▼
Read by QxMD icon Read
search

Collapsing

keyword
https://www.readbyqxmd.com/read/29333321/periodontal-wound-healing-following-reciprocal-autologous-root-transplantation-in-class-iii-furcation-defects
#1
Naoshi Takeuchi, Yoshinori Shirakata, Yukiya Shinohara, Kotaro Sena, Kazuyuki Noguchi
Purpose: Furcation involvement in the molars is difficult to treat, and has been recognized as a risk factor for tooth loss. Although periodontal regenerative therapies, including guided tissue regeneration and various types of bone grafts, have been applied to furcation defects, the effects of these treatments are limited, especially in large class III furcation defects. The purpose of this pilot study was to investigate the effect of reciprocal autologous root transplantation on periodontal wound healing and regeneration in class III furcation defects in dogs...
December 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29332499/examination-of-an-in-vitro-methodology-to-evaluate-the-biomechanical-performance-of-nucleus-augmentation-in-axial-compression
#2
Sebastien Nf Sikora, Danielle E Miles, Sami Tarsuslugil, Marlène Mengoni, Ruth K Wilcox
Intervertebral disc degeneration is one of the leading causes of back pain, but treatment options remain limited. Recently, there have been advances in the development of biomaterials for nucleus augmentation; however, the testing of such materials preclinically has proved challenging. The aim of this study was to develop methods for fabricating and testing bone-disc-bone specimens in vitro for examining the performance of nucleus augmentation procedures. Control, nucleotomy and treated intervertebral disc specimens were fabricated and tested under static load...
January 1, 2018: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/29331055/the-challenges-and-possibilities-of-public-access-defibrillation
#3
REVIEW
Mattias Ringh, Jacob Hollenberg, Thea Palsgaard-Moeller, Leif Svensson, Mårten Rosenqvist, Freddy K Lippert, Mads Wissenberg, Carolina Malta Hansen, Andreas Claesson, Soren Viereck, Jolande A Zijlstra, Rudolph W Koster, Johan Herlitz, Marieke T Blom, Jo Kramer-Johansen, Hanno L Tan, Steffie Beesems, Michiel Hulleman, Theresa M Olasveengen, Fredrik Folke
Out-of-Hospital Cardiac Arrest (OHCA) is a major health problem that affects approximately four hundred thousand patients annually in the United States alone. It is a major challenge for the emergency medical system since decreased survival rates are directly proportional to the time delay from collapse to defibrillation. Historically, defibrillation has only been performed by physicians and in-hospital. With the development of automated external defibrillators (AEDs), rapid defibrillation by non-medical professionals and subsequently by trained or untrained lay bystanders has become possible...
January 13, 2018: Journal of Internal Medicine
https://www.readbyqxmd.com/read/29331010/implants-for-extracapsular-neck-of-femur-fracture-dynamic-hip-screw-versus-intramedullary-nailing
#4
Faisal Farooq Butt, Adnan Shabbair Hussain, Ahmed Mushtaq Khan, Maria Sultan
Neck of femur fractures are the most prevalent type of injury in elderly trauma patients. Both intra and extra capsular type of fractures are equally distributed in the given population. Traditionally, Extra capsular fractures are fixed with Dynamic Hip screw or Intra medullary nailing based on the type of fracture. NICE (National Institute of Clinical Excellence) recommends fixing 31-A1 and 31-A2 fractures with DHS (Dynamic Hip Screw) whereas AO recommends fixing 31-A1 with DHS and 31-A2.1 subtype with DHS and 31-A2...
October 2017: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/29330860/sudden-death-in-sport-and-riding-horses-during-and-immediately-after-exercise-a-case-series
#5
C Navas de Solis, F Althaus, N Basieux, D Burger
BACKGROUND: Sudden death affects the health of horses, the safety of riders and the public perception of animal welfare during equestrian events. OBJECTIVES: To describe the signalment, clinical history, sudden death episode, rider injuries and causes of sudden death during exercise or closely thereafter in sport and pleasure riding horses. STUDY DESIGN: Retrospective case series based on an online questionnaire. METHODS: An online questionnaire was distributed to the veterinary and equestrian community...
January 13, 2018: Equine Veterinary Journal
https://www.readbyqxmd.com/read/29330449/lithium-chloride-effectively-kills-the-honey-bee-parasite-varroa-destructor-by-a-systemic-mode-of-action
#6
Bettina Ziegelmann, Elisabeth Abele, Stefan Hannus, Michaela Beitzinger, Stefan Berg, Peter Rosenkranz
Honey bees are increasingly important in the pollination of crops and wild plants. Recent reports of the weakening and periodical high losses of managed honey bee colonies have alarmed beekeeper, farmers and scientists. Infestations with the ectoparasitic mite Varroa destructor in combination with its associated viruses have been identified as a crucial driver of these health problems. Although yearly treatments are required to prevent collapses of honey bee colonies, the number of effective acaricides is small and no new active compounds have been registered in the past 25 years...
January 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29330023/unraveling-the-differential-structural-stability-and-dynamics-features-of-t7-endolysin-partially-folded-conformations
#7
Meenakshi Sharma, Dinesh Kumar, Krishna Mohan Poluri
BACKGROUND: Characterization of partially collapsed protein conformations at atomic level is a daunting task due to their inherent flexibility and conformational heterogeneity. T7 bacteriophage endolysin (T7L) is a single-domain amidase that facilitates the lysis of Gram-negative bacteria. T7L exhibits a pH-dependent structural transition from native state to partially folded (PF) conformation. In the pH range 5-3, T7L PF states display differential ANS binding characteristics. METHODS: CD, fluorescence, NMR spectroscopy and lysis assays were used to investigate the structure-stability- dynamics relationships of T7L PF conformations...
January 9, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29329687/bubble-induced-color-doppler-feedback-correlates-with-histotripsy-induced-destruction-of-structural-components-in-liver-tissue
#8
Jonathan J Macoskey, Xi Zhang, Timothy L Hall, Jiaqi Shi, Shahaboddin Alahyari Beig, Eric Johnsen, Fred T Lee, Charles A Cain, Zhen Xu
Bubble-induced color Doppler (BCD) is a histotripsy-therapy monitoring technique that uses Doppler ultrasound to track the motion of residual cavitation nuclei that persist after the collapse of the histotripsy bubble cloud. In this study, BCD is used to monitor tissue fractionation during histotripsy tissue therapy, and the BCD signal is correlated with the destruction of structural and non-structural components identified histologically to further understand how BCD monitors the extent of treatment. A 500-kHz, 112-element phased histotripsy array is used to generate approximately 6- × 6- × 7-mm lesions within ex vivo bovine liver tissue by scanning more than 219 locations with 30-1000 pulses per location...
January 9, 2018: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/29328702/peeling-off-neutron-skins-from-neutron-rich-nuclei-constraints-on-the-symmetry-energy-from-neutron-removal-cross-sections
#9
T Aumann, C A Bertulani, F Schindler, S Typel
An experimentally constrained equation of state of neutron-rich matter is fundamental for the physics of nuclei and the astrophysics of neutron stars, mergers, core-collapse supernova explosions, and the synthesis of heavy elements. To this end, we investigate the potential of constraining the density dependence of the symmetry energy close to saturation density through measurements of neutron-removal cross sections in high-energy nuclear collisions of 0.4 to 1 GeV/nucleon. We show that the sensitivity of the total neutron-removal cross section is high enough so that the required accuracy can be reached experimentally with the recent developments of new detection techniques...
December 29, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/29328690/one-parameter-scaling-theory-for-dna-extension-in-a-nanochannel
#10
E Werner, G K Cheong, D Gupta, K D Dorfman, B Mehlig
Experiments measuring DNA extension in nanochannels are at odds with even the most basic predictions of current scaling arguments for the conformations of confined semiflexible polymers such as DNA. We show that a theory based on a weakly self-avoiding, one-dimensional "telegraph" process collapses experimental data and simulation results onto a single master curve throughout the experimentally relevant region of parameter space and explains the mechanisms at play.
December 29, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/29327962/acute-fatal-presumptive-xylitol-toxicosis-in-cape-sugarbirds-promerops-cafer
#11
Brett Richard Gardner, Emily P Mitchell
Twenty-nine wild Cape sugarbirds ( Promerops cafer) died acutely after ingestion of a homemade xylitol nectar solution from a bird feeder. The most aggressive feeders were first affected. Most birds showed clinical signs within 15 minutes of nectar ingestion, including incoordination, weakness, falling from perches, collapse, and death. A few birds showing clinical signs seemed to spontaneously recover and fly away. Full necropsy examinations done on 27 birds were hampered by freezing artifact and autolysis, but results indicated death was caused by the consequences of acute hypoglycemia...
December 2017: Journal of Avian Medicine and Surgery
https://www.readbyqxmd.com/read/29327943/phenotyping-pharyngeal-pathophysiology-using-polysomnography-in-patients-with-obstructive-sleep-apnea
#12
Scott A Sands, Bradley A Edwards, Philip I Terrill, Luigi Taranto-Montemurro, Ali Azarbarzin, Melania Marques, Lauren Hess, David P White, Andrew Wellman
RATIONALE: Therapies for obstructive sleep apnea (OSA) could be administered based on a patient's own phenotypic causes ("traits") if a clinically-applicable approach were available. Here we present a novel approach to quantify two key contributors to OSA-pharyngeal collapsibility and compensatory muscle responsiveness-that is applicable to diagnostic polysomnography. METHODS: Based on physiological definitions, pharyngeal collapsibility determines the ventilation at normal (eupneic) ventilatory drive during sleep, and pharyngeal compensation determines the rise in ventilation accompanying a rising ventilatory drive...
January 12, 2018: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/29327559/-combined-surgical-approaches-in-the-treatment-of-complex-tibial-plateau-fractures
#13
Guang-Hua Yuan, Xiao Zheng, Kang Chen
OBJECTIVE: To explore the early clinical efficacy of a posteromedial inverted "L" shape approach combined an assisted antero lateral assisted approach for the treatment of complex fractures of tibial plateau. METHODS: From March 2011 to June 2014, the posteromedial inverted "L" shape approach combined with the antero lateral assisted approach in the treatment of Schatzker type IV, V, VI tibial plateau fracture were performed in 34 cases. There were 23 males and 11 females, ranging in age from18 to 67 years old, averaged 34...
January 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29327550/-study-on-the-correlative-factors-of-the-pain-under-the-second-metatarsal-in-patients-with-hallux-valgus
#14
Jian-Gang Zuo, Hai-Wei Hu, Zhi-Cheng Sang, Jian-Min Wen, Wei-Dong Sun, Yong-Sheng Sun, Ting Cheng
OBJECTIVE: To analyze the correlation between the hallux valgus angle and arch X-ray parameters change, plantar pressure by measuring the X-ray indexes and foot-pressure indexes in patients with hallux valgus, as well as to study the main cause factors for the pain under the second metatarsal head. METHODS: A retrospective study of 254 patients(477 feet) treated in Wangjing Hospital from January 2012 to June 2013 was performed. The pain under the second metatarsal head and age distribution were recorded...
January 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29327384/children-s-acquisition-of-the-english-past-tense-evidence-for-a-single-route-account-from-novel-verb-production-data
#15
Ryan P Blything, Ben Ambridge, Elena V M Lieven
This study adjudicates between two opposing accounts of morphological productivity, using English past-tense as its test case. The single-route model (e.g., Bybee & Moder, ) posits that both regular and irregular past-tense forms are generated by analogy across stored exemplars in associative memory. In contrast, the dual-route model (e.g., Prasada & Pinker, ) posits that regular inflection requires use of a formal "add -ed" rule that does not require analogy across regular past-tense forms. Children (aged 3-4; 5-6; 6-7; 9-10) saw animations of an animal performing a novel action described with a novel verb (e...
January 12, 2018: Cognitive Science
https://www.readbyqxmd.com/read/29327088/amplification-of-pressure-waves-in-laser-assisted-endodontics-with-synchronized-delivery-of-er-yag-laser-pulses
#16
Nejc Lukač, Matija Jezeršek
When attempting to clean surfaces of dental root canals with laser-induced cavitation bubbles, the resulting cavitation oscillations are significantly prolonged due to friction on the cavity walls and other factors. Consequently, the collapses are less intense and the shock waves that are usually emitted following a bubble's collapse are diminished or not present at all. A new technique of synchronized laser-pulse delivery intended to enhance the emission of shock waves from collapsed bubbles in fluid-filled endodontic canals is reported...
January 11, 2018: Lasers in Medical Science
https://www.readbyqxmd.com/read/29326895/effects-of-walking-with-hand-held-weights-on-energy-expenditure-and-excess-postexercise-oxygen-consumption
#17
Catherine T Campaña, Pablo B Costa
Walking is not only important to assist in performing daily tasks, but also to gain cardiovascular benefits. Further research on walking is needed to examine the physiological responses to improve health and reduce the risks of cardiovascular disease. The purpose of this study was to compare the energy expenditure (EE) during and after walking exercise with versus without hand-held weights (HHW). Nineteen sedentary women (mean±standard deviation; age, 21±2.7 years, height, 163.1±6.3 cm; body mass, 66.6± 15...
December 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29325196/ventral-slot-surgery-to-manage-cervical-intervertebral-disc-disease-in-three-cats
#18
Abbe Harper Crawford, Rodolfo Cappello, Akash Alexander, Steven De Decker
OBJECTIVE:  This case series describes the clinical presentation, management and outcome of three cats diagnosed with cervical intervertebral disc disease that underwent decompressive ventral slot surgery. METHODS:  This is a retrospective case series evaluating client-owned cats undergoing a ventral slot surgical procedure to manage cervical intervertebral disc disease (n = 3). RESULTS:  A routine ventral slot surgery was performed in each case without complication, resulting in postoperative neurological improvement in all three cases...
January 2018: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
https://www.readbyqxmd.com/read/29324925/bone-scintigraphy-can-diagnose-osteoporotic-vertebral-compression-fractures-better-than-conventional-radiography
#19
Sanja Dugonjić, Boris Ajdinović, Milan Ćirković, Gorica Ristić
OBJECTIVE: Most difficult and very frequent complications of osteoporosis are vertebral compression fractures (VCF). Bone scintigraphy with 99mTc-phosphonates enables early detection of vertebral compression fractures in the first 72 hours of occuring. Typical scintigraphic findings is markedly increased radiotracer uptake in the linear pattern, throughout collapsed vertebral body. Bone scintigraphy is usefull in follow-up of vertebral fractures healing, showing reduction of radiotracer uptake in fractured vertebrae...
September 2017: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/29323469/self-collapsing-of-single-molecular-poly-propylene-oxide-ppo-in-a-3d-dna-network
#20
Fen Wu, Zhiyong Zhao, Chun Chen, Tianyang Cao, Chuang Li, Yu Shao, Yiyang Zhang, Dong Qiu, Qian Shi, Qing-Hua Fan, Dongsheng Liu
On the basis of DNA self-assembly, a thermal responsive polymer polypropylene oxide (PPO) is evenly inserted into a rigid 3D DNA network for the study of single molecular self-collapsing process. At low temperature, PPO is hydrophilic and dispersed uniformly in the network; when elevating temperature, PPO becomes hydrophobic but can only collapse on itself because of the fixation and separation of DNA rigid network. The process has been characterized by rheological test and Small Angle X-Ray Scattering test...
January 11, 2018: Small
keyword
keyword
74338
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"