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https://www.readbyqxmd.com/read/29394436/optimizing-seat-belt-and-airbag-designs-for-rear-seat-occupant-protection-in-frontal-crashes
#1
Jingwen Hu, Matthew P Reed, Jonathan D Rupp, Kurt Fischer, Paul Lange, Angelo Adler
Recent field data have shown that the occupant protection in vehicle rear seats failed to keep pace with advances in the front seats likely due to the lack of advanced safety technologies. The objective of this study was to optimize advanced restraint systems for protecting rear seat occupants with a range of body sizes under different frontal crash pulses. Three series of sled tests (baseline tests, advanced restraint trial tests, and final tests), MADYMO model validations against a subset of the sled tests, and design optimizations using the validated models were conducted to investigate rear seat occupant protection with 4 Anthropomorphic Test Devices (ATDs) and 2 crash pulses...
November 2017: Stapp Car Crash Journal
https://www.readbyqxmd.com/read/29326906/a-comparison-of-ground-reaction-force-components-according-to-the-foothold-heights-in-16-t-truck-during-downward-step
#2
Seung-Hyun Hyun, Che-Cheong Ryew
The aim of this study is to compare and analyze the components of ground reaction force (GRF) relative to the foothold heights during downward step of 16-t truck. Adult males (n= 10) jumped downward from each 1st, 2nd, 3rd foothold step and driver's seat orderly using hand rail. Sampling rate of force components of 3 axis (medial-lateral [ML] GRF, anterior-posterior [AP] GRF, peak vertical force [PVF]), variables (COPx, COPy, COP area) of center of pressure (COP), loading rate, and stability index (ML, AP, vertical, and dynamic postural stability index [DPSI]) processed from GRF system was cut off at 1,000 Hz...
December 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29296674/dynamic-strategic-bond-analysis-yields-a-ten-step-synthesis-of-20-nor-salvinorin-a-a-potent-%C3%AE%C2%BA-or-agonist
#3
Jeremy J Roach, Yusuke Sasano, Cullen L Schmid, Saheem Zaidi, Vsevolod Katritch, Raymond C Stevens, Laura M Bohn, Ryan A Shenvi
Salvinorin A (SalA) is a plant metabolite that agonizes the human kappa-opioid receptor (κ-OR) with high affinity and high selectivity over mu- and delta-opioid receptors. Its therapeutic potential has stimulated extensive semisynthetic studies and total synthesis campaigns. However, structural modification of SalA has been complicated by its instability, and efficient total synthesis has been frustrated by its dense, complex architecture. Treatment of strategic bonds in SalA as dynamic and dependent on structural perturbation enabled the identification of an efficient retrosynthetic pathway...
December 27, 2017: ACS Central Science
https://www.readbyqxmd.com/read/29238816/design-and-evaluation-of-an-instrumented-wobble-board-for-assessing-and-training-dynamic-seated-balance
#4
Andrew Williams, Quinn Boser, Animesh Singh Kumawat, Kshitij Agarwal, Hossein Rouhani, Albert Vette
Methods that effectively assess and train dynamic seated balance are critical for enhancing functional independence and reducing risk of secondary health complications in the elderly and individuals with neuromuscular impairments. The objective of this research was to devise and validate a portable tool for assessing and training dynamic seated balance. An instrumented wobble board was designed and constructed that: (1) elicits multidirectional perturbations in seated individuals; (2) quantifies seated balance proficiency; and (3) provides real-time, kinematics-based vibrotactile feedback...
December 13, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/29235013/effects-of-weight-loss-on-acoustic-parameters-after-bariatric-surgery
#5
Lourdes Bernadete Rocha de Souza, Marquiony Marques Dos Santos, Leandro Araújo Pernambuco, Cynthia Meira de Almeida Godoy, Deysianne Meire da Silva Lima
BACKGROUND: Patients with morbid obesity may present vocal alterations, since large accumulation of fat in the vocal tract may interfere with voice production of these individuals. OBJECTIVE: Verify the neck circumference and the acoustic parameters of voice in obese women, before and after the bariatric surgery, and compare the results with a control group, with normal weight. METHODS: Observational, longitudinal, descriptive study with patients referred to the SCODE (Obesity Surgery and Related Disorders Center) in a university hospital...
December 12, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/29232765/influence-of-mouth-and-jaw-movements-on-dynamics-of-spontaneous-eye-blink-activity-assessed-during-slitlamp-biomicroscopy
#6
Michael J Doughty
BACKGROUND: To evaluate oculo-mandibular interactions during evaluation of spontaneous eye blink rate (SEBR) of normal young adult human subjects while seated at a slitlamp. METHODS: Repeat video recordings of five minutes duration were made on 76 young adult emmetropic subjects aged 18-25 years. The subjects were instructed to direct their gaze horizontally toward a distant target with the entire cornea of the left eye illuminated with a broad beam cobalt blue light...
December 12, 2017: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
https://www.readbyqxmd.com/read/29205437/mrna-traffic-control-reviewed-n6-methyladenosine-m6-a-takes-the-driver-s-seat
#7
REVIEW
Abhirami Visvanathan, Kumaravel Somasundaram
Messenger RNA is a flexible tool box that plays a key role in the dynamic regulation of gene expression. RNA modifications variegate the message conveyed by the mRNA. Similar to DNA and histone modifications, mRNA modifications are reversible and play a key role in the regulation of molecular events. Our understanding about the landscape of RNA modifications is still rudimentary in contrast to DNA and histone modifications. The major obstacle has been the lack of sensitive detection methods since they are non-editing events...
December 4, 2017: BioEssays: News and Reviews in Molecular, Cellular and Developmental Biology
https://www.readbyqxmd.com/read/29186607/benefits-and-limitations-of-indocyanine-green-fluorescent-image-guided-surgery-for-spinal-intramedullary-tumors
#8
Toshihiro Takami, Kentaro Naito, Toru Yamagata, Nobuyuki Shimokawa, Kenji Ohata
BACKGROUND: Intraoperative image guidance using near-infrared indocyanine green videoangiography (ICG-VA) has been used to provide real-time angiographic images during vascular or brain tumor surgery, and it is also being used for spine surgery. OBJECTIVE: To further investigate the benefits and limitations of ICG-VA image-guided surgery for spinal intramedullary tumors through retrospective study. METHODS: ICG-VA was used in 48 cases that were treated surgically over the past 5 yr...
December 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29171979/influence-of-a-dynamic-seating-habit-on-lumbar-motor-control-in-schoolchildren
#9
T Fettweis, M N Onkelinx, C Schwartz, C Demoulin, J L Croisier, M Vanderthommen
BACKGROUND: Adequate motor control is considered important for spinal stability and the prevention of low back pain in adulthood and in childhood. OBJECTIVE: Given that the sitting position can affect proprioception, this study aimed to evaluate the influence of using at school a triangular and dynamic cushion on schoolchildren's trunk motor control. METHODS: Thirty 8-year-old schoolchildren were randomized into a control group (n= 15) and a "cushion group" (n= 15), in which the children used the cushion for one year and a half...
November 17, 2017: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/29170632/transcriptional-and-post-transcriptional-mechanisms-of-the-development-of-neocortical-lamination
#10
REVIEW
Tatiana Popovitchenko, Mladen-Roko Rasin
The neocortex is a laminated brain structure that is the seat of higher cognitive capacity and responses, long-term memory, sensory and emotional functions, and voluntary motor behavior. Proper lamination requires that progenitor cells give rise to a neuron, that the immature neuron can migrate away from its mother cell and past other cells, and finally that the immature neuron can take its place and adopt a mature identity characterized by connectivity and gene expression; thus lamination proceeds through three steps: genesis, migration, and maturation...
2017: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/29112056/effects-of-a-resistance-training-intervention-on-strength-power-and-performance-in-adolescent-dancers
#11
Rebecca A Dowse, Mike R McGuigan, Craig Harrison
Dowse, RA, McGuigan, MR, and Harrison, C. Effects of a resistance training intervention on strength, power, and performance in adolescent dancers. J Strength Cond Res XX(X): 000-000, 2017-The aim of this study was to determine whether a 9-week resistance training program could have a significant effect on maximum lower-body strength and power, dynamic balance, and dance performance in adolescent dancers. Twelve competitive adolescent female dancers trained in jazz, ballet, and contemporary were recruited from local dance schools and assigned to a resistance training group (dance experience 9...
November 1, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29081263/revisiting-the-merits-of-a-mandatory-large-group-classroom-learning-format-an-md-mba-perspective
#12
Shawn X Li, Roshini Pinto-Powell
The role of classroom learning in medical education is rapidly changing. To promote active learning and reduce student stress, medical schools have adopted policies such as pass/fail curriculums and recorded lectures. These policies along with the rising importance of the USMLE (United States Medical Licensing Examination) exams have made asynchronous learning popular to the detriment of classroom learning. In contrast to this model, modern day business schools employ mandatory large group classes with assigned seating and cold-calling...
2017: Medical Education Online
https://www.readbyqxmd.com/read/29075428/obtaining-natural-sit-to-stand-motion-with-a-biomimetic-controller-for-powered-knee-prostheses
#13
Molei Wu, Md Rejwanul Haque, Xiangrong Shen
Standing up from a seated position is a common activity in people's daily life. However, for transfemoral (i.e., above-knee) amputees fitted with traditional passive prostheses, the sit-to-stand (STS) transition is highly challenging, due to the inability of the prosthetic joints in generating torque and power output. In this paper, the authors present a new STS control approach for powered lower limb prostheses, which is able to regulate the power delivery of the prosthetic knee joint to obtain natural STS motion similar to that displayed by healthy subjects...
2017: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/29064302/study-of-chest-injuries-to-3yo-child-occupants-seated-in-impact-shield-and-5-point-harness-crss
#14
Yong Han, Di Pan, Jun Ouyang, Lei Qian, Koji Mizuno, Anguo Cang
OBJECTIVE: To investigate whether the 5-point harness or the impact shield CRS or both has the potential to cause chest injuries to children. This is determined by examining whether the loading to the chest reaches the internal organ injury threshold for children. METHOD: The chest injury risk to a child occupant in a child restraint system (CRS) was investigated using Q3 dummy tests, finite element (FE) simulations (Q3 dummy and human models) and animal tests. The investigation was done for two types of CRSs (i...
October 24, 2017: Traffic Injury Prevention
https://www.readbyqxmd.com/read/29053865/beta-burst-dynamics-in-parkinson-s-disease-off-and-on-dopaminergic-medication
#15
Gerd Tinkhauser, Alek Pogosyan, Huiling Tan, Damian M Herz, Andrea A Kühn, Peter Brown
Exaggerated basal ganglia beta activity (13-35 Hz) is commonly found in patients with Parkinson's disease and can be suppressed by dopaminergic medication, with the degree of suppression being correlated with the improvement in motor symptoms. Importantly, beta activity is not continuously elevated, but fluctuates to give beta bursts. The percentage number of longer beta bursts in a given interval is positively correlated with clinical impairment in Parkinson's disease patients. Here we determine whether the characteristics of beta bursts are dependent on dopaminergic state...
November 1, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29051881/fracture-management-in-pyknodysostosis-a-rare-case-report
#16
G Subramanya Gandhi, V Vijayanarasimhan, Lionel John, S Kailash, E Sathish Balaji
INTRODUCTION: Pyknodysostosis is congenital osteosclerotic skeletal dysplasia of a rare entity. It is an autosomal recessive disease which presents with short stature and generalized osteosclerosis of skeleton as result of decreased bone turnover. Here, the authors report a case of pyknodysostosis who presented to our emergency room with a pathological fracture in the shaft of the femur for which operative intervention was carried out. CASE REPORT: A 30-year-old female presented to our emergency room with a history of trivial injury to right thigh region and was diagnosed as fracture in her right femur shaft region...
May 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/29034325/collection-of-viable-aerosolized-influenza-virus-and-other-respiratory-viruses-in-a-student-health-care-center-through-water-based-condensation-growth
#17
Maohua Pan, Tania S Bonny, Julia Loeb, Xiao Jiang, John A Lednicky, Arantzazu Eiguren-Fernandez, Susanne Hering, Z Hugh Fan, Chang-Yu Wu
The dynamics and significance of aerosol transmission of respiratory viruses are still controversial, for the major reasons that virus aerosols are inefficiently collected by commonly used air samplers and that the collected viruses are inactivated by the collection method. Without knowledge of virus viability, infection risk analyses lack accuracy. This pilot study was performed to (i) determine whether infectious (viable) respiratory viruses in aerosols could be collected from air in a real world environment by the viable virus aerosol sampler (VIVAS), (ii) compare and contrast the efficacy of the standard bioaerosol sampler, the BioSampler, with that of the VIVAS for the collection of airborne viruses in a real world environment, and (iii) gain insights for the use of the VIVAS for respiratory virus sampling...
September 2017: MSphere
https://www.readbyqxmd.com/read/28976493/accelerometer-assessed-physical-activity-in-epidemiology-are-monitors-equivalent
#18
Alex V Rowlands, Evgeny M Mirkes, Tom Yates, Stacey Clemes, Melanie Davies, Kamlesh Khunti, Charlotte L Edwardson
PURPOSE: Accelerometers are increasingly being used to assess physical activity in large-scale surveys. Establishing whether key physical activity outcomes can be considered equivalent between three widely-used accelerometer brands would be a significant step towards capitalising on the increasing availability of accelerometry data for epidemiological research. METHODS: Twenty participants wore a GENEActiv, Axivity AX3 and ActiGraph GT9X on their non-dominant wrist and were observed for two-hours in a simulated living space...
October 2, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28960131/blood-perfusion-changes-during-sacral-nerve-root-stimulation-versus-surface-gluteus-electrical-stimulation-on-in-seated-spinal-cord-injury
#19
Liang Qin Liu, Martin Ferguson-Pell
The objective of this article is to examine dynamic changes of ischial blood perfusion during sacral nerve root stimulation against surface functional electrical stimulation (FES). Fourteen adults with suprasacral spinal cord injury (SCI) were recruited. The gluteal maximus was activated by surface FES or stimulating sacral nerve roots by functional magnetic stimulation (FMS) or a sacral anterior root stimulator implant (SARS). Ischial skin index of hemoglobin (IHB) and oxygenation (IOX) was measured.Skin blood perfusion was significantly higher during FMS than the baseline (IHB 1...
September 29, 2017: Assistive Technology: the Official Journal of RESNA
https://www.readbyqxmd.com/read/28952156/positive-expiratory-pressure-therapy-versus-other-airway-clearance-techniques-for-bronchiectasis
#20
REVIEW
Annemarie L Lee, Angela T Burge, Anne E Holland
BACKGROUND: People with bronchiectasis experience chronic cough and sputum production and require the prescription of airway clearance techniques (ACTs). A common type of ACT prescribed is positive expiratory pressure (PEP) therapy. A previous review has suggested that ACTs including PEP therapy are beneficial compared to no treatment in people with bronchiectasis. However, the efficacy of PEP therapy in a stable clinical state or during an acute exacerbation compared to other ACTs in bronchiectasis is unknown...
September 27, 2017: Cochrane Database of Systematic Reviews
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