keyword
MENU ▼
Read by QxMD icon Read
search

Balance force

keyword
https://www.readbyqxmd.com/read/29149564/binding-thermodynamics-and-kinetics-calculations-using-chemical-host-and-guest-a-comprehensive-picture-of-molecular-recognition
#1
Zhiye Tang, Chia-En A Chang
Understanding the fine balance between changes of entropy and enthalpy and the competition between a guest and water molecules in molecular binding is crucial in fundamental studies and practical applications. Experiments provide measurements. However, illustrating the binding/unbinding processes gives a complete picture of molecular recognition not directly available from experiments, and computational methods bridge the gaps. Here, we investigated guest association/dissociation with β-cyclodextrin (β-CD) by using microsecond-timescale molecular dynamics (MD) simulations, post-analysis and numerical calculations...
November 17, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/29148312/experimental-analysis-of-the-process-parameters-affecting-bone-burring-operations
#2
Jonathan R Kusins, O Remus Tutunea-Fatan, Louis M Ferreira
The experimental quantification of the process parameters associated with bone burring represents a desirable outcome both from the perspective of an optimized surgical procedure as well as that of a future implementation into the design of closed-loop controllers used in robot-assisted bone removal operations. Along these lines, the present study presents an experimental investigation of the effects that tool type, rotational speed of the tool, depth of cut, feed rate, cutting track overlap, and tool angle (to a total of 864 total unique combinations) have on bone temperature, tool vibration, and cutting forces associated with superficial bone removal operations...
November 1, 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/29142875/quantification-of-the-tug-back-by-measuring-the-pulling-force-and-micro-computed-tomographic-evaluation
#3
Su-Jin Jeon, Young-Mi Moon, Min-Seock Seo
Objectives: The aims of this study were to quantify tug-back by measuring the pulling force and investigate the correlation of clinical tug-back pulling force with in vitro gutta-percha (GP) cone adaptation score using micro-computed tomography (µCT). Materials and Methods: Twenty-eight roots from human single-rooted teeth were divided into 2 groups. In the ProTaper Next (PTN) group, root canals were prepared with PTN, and in the ProFile (PF) group, root canals were prepared using PF (n = 14)...
November 2017: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/29142114/female-vervet-monkeys-fine-tune-decisions-on-tolerance-versus-conflict-in-a-communication-network
#4
Christèle Borgeaud, Alessandra Schnider, Michael Krützen, Redouan Bshary
Group living promotes opportunities for both cooperation and competition. Selection on the ability to cope with such opposing social opportunities has been proposed as a driving force in the evolution of large brains in primates and other social species. However, we still know little about the degree of complexity involved in such social strategies. Here, we report advanced social strategies in wild vervet monkeys. Building on recent experimental evidence that subordinate females trade grooming for tolerance from higher-ranking individuals during foraging activities, we show that the audience composition strongly affects this trade...
November 29, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/29142095/patterns-of-intermuscular-inhibitory-force-feedback-across-cat-hindlimbs-suggest-a-flexible-system-for-regulating-whole-limb-mechanics
#5
Mark A Lyle, T Richard Nichols
Prior work has suggested that Golgi tendon organ feedback, via its distributed network linking muscles spanning all joints, could be used by the nervous system to help regulate whole limb mechanics if appropriately organized. We tested this hypothesis by characterizing the patterns of intermuscular force dependent feedback between the primary extensor muscles spanning the knee, ankle and toes in decerebrate cat hindlimbs. Intermuscular force feedback was evaluated by stretching tendons of selected muscles in isolation and in pairwise combinations and then measuring the resulting force dependent intermuscular interactions...
November 15, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/29140715/measurement-of-charge-transfer-to-aqueous-droplets-in-high-voltage-electric-fields
#6
Eric S Elton, Yash Tibrewala, Ethan R Rosenberg, Brad S Hamlin, William D Ristenpart
The electric charge acquired by aqueous droplets when they contact an electrode is a crucial parameter in experimental and industrial applications where electric fields are used to manipulate droplet motion and coalescence. For unclear reasons, many investigators have found that aqueous droplets acquire significantly more positive than negative charge. Extant techniques for determining the droplet charge typically rely on a hydrodynamic force balance that depends on accurate characterization of the drag forces acting on the droplet...
November 15, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29140704/direct-observation-of-splitting-in-oil-in-water-in-oil-emulsion-droplets-via-a-microchannel-mimicking-membrane-pores
#7
Kazuki Akamatsu, Koki Minezaki, Masumi Yamada, Minoru Seki, Shin-Ichi Nakao
Direct observation of double emulsion droplet permeation through a microchannel that mimicked 100-μm membrane pores with a porosity of 66.7% provided insights regarding splitting mechanisms in porous membranes. The microchannel was fabricated by standard soft lithography, and the oil-in-water-in-oil double emulsion droplets were prepared with a glass capillary device. By changing the flow rate from 0.5 to 5.0×10(-2) m s(-1), three characteristic behaviors were observed: (a) passage into one channel without splitting; (b) division into two smaller components; and (c) stripping of the middle water phase of the double emulsion droplets into a smaller double emulsion droplet and a smaller water-in-oil single emulsion droplet...
November 15, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29137908/no-evidence-found-for-an-association-between-prednisone-dose-and-fvc-change-in-newly-treated-pulmonary-sarcoidosis
#8
Caroline E Broos, Linda H C Poell, Caspar W N Looman, Johannes C C M In 't Veen, Marco J J H Grootenboers, Roxane Heller, Leon M van den Toorn, Monique Wapenaar, Henk C Hoogsteden, Mirjam Kool, Marlies S Wijsenbeek, Bernt van den Blink
BACKGROUND: Prednisone is used as first-line therapy for pulmonary sarcoidosis. What dosing strategy has the best balance between effect and side-effects is largely unknown. We analyzed change in forced vital capacity (FVC) and weight during different prednisone doses used in daily practice for treatment naïve pulmonary sarcoidosis patients. METHODS: Multilevel models were used to describe FVC and weight change over time. Correlations were calculated using linear regression models...
October 31, 2017: Respiratory Medicine
https://www.readbyqxmd.com/read/29136638/a-free-boundary-model-of-a-motile-cell-explains-turning-behavior
#9
Masoud Nickaeen, Igor L Novak, Stephanie Pulford, Aaron Rumack, Jamie Brandon, Boris M Slepchenko, Alex Mogilner
To understand shapes and movements of cells undergoing lamellipodial motility, we systematically explore minimal free-boundary models of actin-myosin contractility consisting of the force-balance and myosin transport equations. The models account for isotropic contraction proportional to myosin density, viscous stresses in the actin network, and constant-strength viscous-like adhesion. The contraction generates a spatially graded centripetal actin flow, which in turn reinforces the contraction via myosin redistribution and causes retraction of the lamellipodial boundary...
November 14, 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/29136550/cerebellar-transcranial-direct-current-stimulation-improves-adaptive-postural-control
#10
Peter Poortvliet, Billie Hsieh, Andrew Cresswell, Jacky Au, Marcus Meinzer
OBJECTIVE: Rehabilitation interventions contribute to recovery of impaired postural control, but it remains a priority to optimize their effectiveness. A promising strategy may involve transcranial direct current stimulation (tDCS) of brain areas involved in fine-tuning of motor adaptation. This study explored the effects of cerebellar tDCS (ctDCS) on postural recovery from disturbance by Achilles tendon vibration. METHODS: Twenty-eight healthy volunteers participated in this sham-ctDCS controlled study...
October 20, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29136031/quantification-of-the-sit-to-stand-movement-for-monitoring-age-related-motor-deterioration-using-the-nintendo-wii-balance-board
#11
Go Yamako, Etsuo Chosa, Koji Totoribe, Yuu Fukao, Gang Deng
Simple methods for quantitative evaluations of individual motor performance are crucial for the early detection of motor deterioration. Sit-to-stand movement from a chair is a mechanically demanding component of activities of daily living. Here, we developed a novel method using the ground reaction force and center of pressure measured from the Nintendo Wii Balance Board to quantify sit-to-stand movement (sit-to-stand score) and investigated the age-related change in the sit-to-stand score as a method to evaluate reduction in motor performance...
2017: PloS One
https://www.readbyqxmd.com/read/29132482/effectiveness-of-functional-electrical-stimulation-fes-versus-conventional-electrical-stimulation-in-gait-rehabilitation-of-patients-with-stroke
#12
Freeha Sharif, Samina Ghulam, Arshad Nawaz Malik, Quratulain Saeed
OBJECTIVE: To compare the effectiveness of functional electrical stimulation (FES) versus conventional electrical stimulation in gait rehabilitation of patients with stroke for finding the most appropriate problem-oriented treatment for foot drop patients in a shorter time period. STUDY DESIGN: Randomized controlled trial. PLACE AND DURATION OF STUDY: Armed Forces Institute of Rehabilitation Medicine, Rawalpindi, from July to December 2016...
November 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/29131936/nanomechanical-force-mapping-of-restricted-cell-to-cell-collisions-oscillating-between-contraction-and-relaxation
#13
Benhui Hu, Wan Ru Leow, Pingqiang Cai, Yong-Qiang Li, Yun-Long Wu, Xiaodong Chen
Contact-mediated cell migration strongly determines the invasiveness of the corresponding cells, collective migration, and morphogenesis. The quantitative study of cellular response upon contact relies on cell-to-cell collision, which rarely occurs in conventional cell culture. Herein, we developed a strategy to activate a robust cell-to-cell collision within smooth muscle cell pairs. Nanomechanical traction force mapping reveals that the collision process is promoted by the oscillatory modulations between contraction and relaxation and orientated by the filopodial bridge composed of nanosized contractile machinery...
November 16, 2017: ACS Nano
https://www.readbyqxmd.com/read/29120979/asymmetries-in-isometric-force-time-charcteristics-are-not-detrimental-to-change-of-direction-speed
#14
Thomas Dos'Santos, Christopher Thomas, Paul A Jones, Paul Comfort
The purpose of this study was to determine the impact of between limb asymmetries in IMTP force-time characteristics on change of direction speed (CODS). Twenty multisport collegiate athletes (mean ± SD: age: 21.0 ± 1.9 years; mass: 78.7 ± 8.9 kg; height: 1.77 ± 0.04 m) performed three unilateral stance IMTP trials per limb and three modified 505 CODS trials each side to establish imbalances between left and right, and dominant (D) and non-dominant (ND) limbs. Limb dominance was defined as the limb that produced the highest isometric force-time value or faster CODS performance...
November 6, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29120480/coupled-surface-and-groundwater-hydrological-modeling-in-a-changing-climate
#15
Venkataramana Sridhar, Mirza M Billah, John W Hildreth
Many current watershed modeling efforts now incorporate surface water and groundwater for managing water resources since the exchanges between groundwater and surface water need a special focus considering the changing climate. The influence of groundwater dynamics on water and energy balance components is investigated in the Snake River Basin (SRB) by coupling the Variable Infiltration Capacity (VIC) and MODFLOW models (VIC-MF) for the period of 1986 through 2042. A 4.4% increase in base flows and a 10.3% decrease in peak flows are estimated by VIC-MF compared to the VIC model in SRB...
November 9, 2017: Ground Water
https://www.readbyqxmd.com/read/29117883/admission-criteria-for-children-with-obstructive-sleep-apnea-after-adenotonsillectomy-considerations-for-cost
#16
David F Smith, Charlene P Spiceland, Stacey L Ishman, Branden M Engorn, Christopher Donohue, Paul S Park, James R Benke, Tiffany Frazee, Robert H Brown, Nicholas M Dalesio
STUDY OBJECTIVES: Postoperative respiratory complications (PRCs) are common among children with obstructive sleep apnea (OSA) after adenotonsillectomy. We analyzed postoperative admission guidelines to determine which optimally balanced patient safety and cost. METHODS: Retrospective study of children aged 12 years or younger undergoing adenotonsillectomy for OSA after polysomnography at a tertiary academic care center over 2 years. Demographics, medical history, and hospital course were collected...
November 1, 2017: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
https://www.readbyqxmd.com/read/29114332/molar-uprighting-a-considerable-and-safe-decision-to-avoid-prosthetic-treatment
#17
Taísa Boamorte Raveli, Dirceu Barnabé Raveli, Kelei Cristina de Mathias Almeida, Ary Dos Santos Pinto
Background: Tipped lower molar over edentulous space is very common in orthodontics practice when adults seek treatment. The segmented arch technique features a predictable force system that provides a controlled release of force that can produce light and continuous tooth movement. Case Description: A female adult patient, who lost a permanent lower first molar, needed correction of the position of her permanent first molar place. Instead of making space for rehabilitation, it was closed after second molar uprighting and a balanced interdigitation was created without prosthetics...
2017: Open Dentistry Journal
https://www.readbyqxmd.com/read/29113338/mir-23a-modulates-x-linked-inhibitor-of-apoptosis-mediated-autophagy-in-human-luminal-breast-cancer-cell-lines
#18
Ping Chen, Yin-Huan He, Xing Huang, Si-Qi Tao, Xiao-Nan Wang, Hong Yan, Ke-Shuo Ding, Peter E Lobie, Wen-Yong Wu, Zheng-Sheng Wu
Autophagy is a conserved multi-step lysosomal process that is induced by diverse stimuli including cellular nutrient deficiency. X-linked inhibitor of apoptosis (XIAP) promotes cell survival and recently has been demonstrated to suppress autophagy. Herein, we examined regulation of XIAP-mediated autophagy in breast cancer cells and determined the underlying molecular mechanism. To investigate this process, autophagy of breast cancer cells was induced by Earle's balanced salt solution (EBSS). We observed discordant expression of XIAP mRNA and protein in the autophagic process induced by EBSS, suggesting XIAP may be regulated at a post-transcriptional level...
October 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/29112981/adjustment-of-the-dynamic-weight-distribution-as-a-sensitive-parameter-for-diagnosis-of-postural-alteration-in-a-rodent-model-of-vestibular-deficit
#19
Brahim Tighilet, David Péricat, Alais Frelat, Yves Cazals, Guillaume Rastoldo, Florent Boyer, Olivier Dumas, Christian Chabbert
Vestibular disorders, by inducing significant posturo-locomotor and cognitive disorders, can significantly impair the most basic tasks of everyday life. Their precise diagnosis is essential to implement appropriate therapeutic countermeasures. Monitoring their evolution is also very important to validate or, on the contrary, to adapt the undertaken therapeutic actions. To date, the diagnosis methods of posturo-locomotor impairments are restricted to examinations that most often lack sensitivity and precision...
2017: PloS One
https://www.readbyqxmd.com/read/29112808/comparative-analysis-of-supply-risk-mitigation-strategies-for-critical-byproduct-minerals-a-case-study-of-tellurium
#20
Michele Bustamante, Gabrielle Gaustad, Elisa Alonso
Materials criticality assessment is an analytical framework increasingly applied to identify materials of importance to stakeholders who face scarcity risks. Although criticality assessment studies highlight materials for the implicit purpose of informing future action, the aggregated nature of the studies' results make them poorly suited for use as guidance in nuanced strategy development and implementation. As a first step in the selection of mitigation strategies, the present work proposes a modeling framework and accompanying set of metrics to directly compare strategies by measuring effectiveness of risk reduction as a function of features of projected supply-demand balance over time...
November 7, 2017: Environmental Science & Technology
keyword
keyword
31263
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"