keyword
MENU ▼
Read by QxMD icon Read
search

time-optimal control

keyword
https://www.readbyqxmd.com/read/28938286/optimizing-bone-defect-reconstruction-balanced-cable-transport-with-circular-external-fixation
#1
Stephen Matthew Quinnan, Charles Lawrie
Distraction osteogenesis has proven effective in the management of tibial bone loss from severe trauma and infection. Unfortunately, pain and scarring from wires and half pins dragging through the skin and the required prolonged time in the external fixator make treatment difficult. Cable bone transport has been shown to improve cosmesis and decrease pain during transport. However, the published methods have limitations in that they have poor control of transport segment alignment, do not allow for lengthening of the limb, and do not permit weight bearing during the treatment process...
October 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28938216/efficient-removal-of-priority-hazardous-priority-and-emerging-pollutants-with-prunus-armeniaca-functionalized-biochar-from-aqueous-wastes-experimental-optimization-and-modeling
#2
Maja Turk Sekulić, Sabolč Pap, Zoran Stojanović, Nikola Bošković, Jelena Radonić, Tatjana Šolević Knudsen
This paper investigates the ability of the phosphoric acid functionalized Prunus armeniaca stones biochar (AsPhA) prepared by thermochemical activation to remove lead (Pb(2+)), cadmium (Cd(2+)), nickel (Ni(2+)), naproxen and chlorophenols from aqueous wastes. The engineered biochar was characterized using the Scanning Electron Microscopy, Energy-dispersive X-ray Spectroscopy, Fourier Transform Infrared Spectroscopy and Brunauer, Emmett and Teller technique. The batch studies were performed by varying the initial pH of the solution (2-9), adsorbent dosage (0...
September 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28938135/bang-bang-optimal-control-of-large-spin-systems-enhancement-of-13-c-13-c-singlet-order-at-natural-abundance
#3
Deepak Khurana, T S Mahesh
Using a bang-bang optimal control technique, we transfer polarization from a set of abundant high-γ nuclei directly to singlet order of a low-γ spin-pair. This approach is analogous to algorithmic cooling (AC) procedure used in quantum state purification. Specifically, we apply this method for enhancing the singlet order in a natural abundant (13)C- (13)C spin pair by exploiting nine equivalent protons of an 11-spin system. Compared to the standard method not involving polarization transfer, we find an enhancement of singlet order by about 3...
September 14, 2017: Journal of Magnetic Resonance
https://www.readbyqxmd.com/read/28937741/influence-of-carbon-nanotube-characteristics-on-macroscopic-fiber-properties
#4
Dmitri E Tsentalovich, Robert James Headrick, Francesca Mirri, Junli Hao, Natnael Behabtu, Colin C Young, Matteo Pasquali
We study how intrinsic parameters of CNT samples affect the properties of macroscopic CNT fibers with optimized structure. We measure CNT diameter, number of walls, aspect ratio, graphitic character, and purity (residual catalyst and non-CNT carbon) in samples from 19 suppliers; we process the highest quality CNT samples into aligned, densely packed fibers, by using an established wet-spinning solution process. We find that fiber properties are mainly controlled by CNT aspect ratio and that sample purity is important for effective spinning...
September 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28937162/experimentally-validated-mathematical-model-of-analyte-uptake-by-permeation-passive-samplers
#5
F Salim, M Ioannidis, T Górecki
A mathematical model describing the sampling process in a permeation-based passive sampler was developed and evaluated numerically. The model was applied to the Waterloo Membrane Sampler (WMS), which employs a polydimethylsiloxane (PDMS) membrane as a permeation barrier, and an adsorbent as a receiving phase. Samplers of this kind are used for sampling volatile organic compounds (VOC) from air and soil gas. The model predicts the spatio-temporal variation of sorbed and free analyte concentrations within the sampler components (membrane, sorbent bed and dead volume), from which the uptake rate throughout the sampling process can be determined...
September 22, 2017: Environmental Science. Processes & Impacts
https://www.readbyqxmd.com/read/28936982/optimization-and-quality-control-of-genome-wide-hi-c-library-preparation
#6
Xiang-Yuan Zhang, Chao He, Bing-Yu Ye, De-Jian Xie, Ming-Lei Shi, Yan Zhang, Wen-Long Shen, Ping Li, Zhi-Hu Zhao
Highest-throughput chromosome conformation capture (Hi-C) is one of the key assays for genome- wide chromatin interaction studies. It is a time-consuming process that involves many steps and many different kinds of reagents, consumables, and equipments. At present, the reproducibility is unsatisfactory. By optimizing the key steps of the Hi-C experiment, such as crosslinking, pretreatment of digestion, inactivation of restriction enzyme, and in situ ligation etc., we established a robust Hi-C procedure and prepared two biological replicates of Hi-C libraries from the GM12878 cells...
September 20, 2017: Yi Chuan, Hereditas
https://www.readbyqxmd.com/read/28936966/-progress-of-mechanical-ventilation-during-cardiopulmonary-resuscitation
#7
Cai Wen, Tao Yu, Lixiang Wang
Mechanical ventilation is regarded as an effective means of replacing artificial ventilation during cardiopulmonary resuscitation (CPR), and has been widely used in the treatment of cardiac arrest (CA) patients. However, there are still some controversial issues remaining to be settled, such as the assessment of the effectiveness of mechanical ventilation, the selection of the optimal oxygen concentration (FiO2), tidal volume (VT), respiratory frequency, and mode of ventilation during the CPR process. The pros and cons of positive pressure ventilation are also inconclusive...
September 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28935393/the-effectiveness-of-psychological-interventions-on-self-care-psychological-and-health-outcomes-in-patients-with-chronic-heart-failure-a-systematic-review-and-meta-analysis
#8
REVIEW
Ying Jiang, Shefaly Shorey, Betsy Seah, Wanxian Chan, Wilson Wai San Tam, Wenru Wang
OBJECTIVE: To review the evidence to determine the effects of psychological interventions on self-care and psychological and health outcomes in patients with chronic heart failure (CHF). METHODS: We evaluated the effectiveness of randomized controlled trials using psychological methods or theory on self-care behaviors, anxiety and depression levels, HRQoL, and physical function. Studies published in English, from January 2006 to December 2016, were considered. We searched published and unpublished studies in the following electronic databases: CINAHL, Cochrane Library, EMBASE, PubMed, PsycINFO, Scopus, Web of Science, and ProQuest Dissertations and Theses...
August 19, 2017: International Journal of Nursing Studies
https://www.readbyqxmd.com/read/28935340/risk-factors-outcomes-and-timing-of-manipulation-under-anesthesia-after-total-knee-arthroplasty
#9
Erik T Newman, Thomas A Herschmiller, David E Attarian, Thomas P Vail, Michael P Bolognesi, Samuel S Wellman
BACKGROUND: Knee stiffness requiring manipulation under anesthesia (MUA) is an undesirable outcome following total knee arthroplasty (TKA), but risk factors for, and optimal timing of, MUA remain unclear. METHODS: Primary TKAs performed at a single center were retrospectively reviewed. Clinical variables were compared between patients who underwent MUA and those who did not; variables that differed were utilized to identify an appropriately matched control group of non-MUA patients...
August 10, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28935267/methylphenidate-doses-in-attention-deficit-hyperactivity-disorder-and-comorbid-substance-use-disorders
#10
Charlotte Skoglund, Lena Brandt, Brian D'Onofrio, Henrik Larsson, Johan Franck
Patients with Attention Deficit/Hyperactivity Disorder (ADHD) and comorbid Substance Use Disorders (SUD) are increasingly being treated with central stimulant medication despite limited evidence for its effectiveness. Lack of longitudinal follow-up studies of dosing and adverse effects has resulted in conflicting treatment guidelines. This study aims to explore whether individuals with ADHD and comorbid SUD are treated with higher stimulant doses than individuals with ADHD only, and whether doses increase over time as a sign of tolerance, a core symptom of addiction...
September 18, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28934125/optimized-mtdna-control-region-primer-extension-capture-analysis-for-forensically-relevant-samples-and-highly-compromised-mtdna-of-different-age-and-origin
#11
Mayra Eduardoff, Catarina Xavier, Christina Strobl, Andrea Casas-Vargas, Walther Parson
The analysis of mitochondrial DNA (mtDNA) has proven useful in forensic genetics and ancient DNA (aDNA) studies, where specimens are often highly compromised and DNA quality and quantity are low. In forensic genetics, the mtDNA control region (CR) is commonly sequenced using established Sanger-type Sequencing (STS) protocols involving fragment sizes down to approximately 150 base pairs (bp). Recent developments include Massively Parallel Sequencing (MPS) of (multiplex) PCR-generated libraries using the same amplicon sizes...
September 21, 2017: Genes
https://www.readbyqxmd.com/read/28933611/optimal-frequency-time-combination-of-whole-body-vibration-training-for-developing-physical-performance-of-people-with-sarcopenia-a-randomized-controlled-trial
#12
Ning Wei, Marco Yc Pang, Shamay Sm Ng, Gabriel Yf Ng
OBJECTIVE: To determine whether frequency and exposure time to whole body vibration influenced its effects on physical performance in seniors with sarcopenia. DESIGN: Randomized controlled trial Setting: A university sports training laboratory. SUBJECTS: Eighty community dwelling seniors with sarcopenia were recruited. INTERVENTIONS: Participants were randomly divided into 4 groups, namely, low-frequency (LG: 20Hz x 720s), medium-frequency (MG: 40Hz x 360s), high-frequency (HG: 60Hz x 240s) and control (CG: no extra training) for 12 weeks of whole body vibration training and 12 weeks of follow-up...
October 2017: Clinical Rehabilitation
https://www.readbyqxmd.com/read/28932887/microchip-capillary-gel-electrophoresis-combined-with-lectin-affinity-enrichment-employing-magnetic-beads-for-glycoprotein-analysis
#13
Nicole Y Engel, Victor U Weiss, Christian Wenz, Susanne Glück, Andreas Rüfer, Martin Kratzmeier, Martina Marchetti-Deschmann, Günter Allmaier
Due to the constant search for reliable methods to investigate glycoproteins in complex biological samples, an alternative approach combining affinity enrichment with rapid and sensitive analysis on-a-chip is presented. Glycoproteins were specifically captured by lectin-coated magnetic beads, eluted by competitive sugars, and investigated with microchip capillary gel electrophoresis (MCGE), i.e., CGE-on-a-chip. We compared our results to sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) data, which turned out to be in very good agreement...
September 20, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28932758/iterative-image-processing-for-early-diagnostic-of-beta-amyloid-plaque-deposition-in-pre-clinical-alzheimer-s-disease-studies
#14
Nikolai V Slavine, Padmakar V Kulkarni, Roderick W McColl
PURPOSE: To test and evaluate an efficient iterative image processing strategy to improve the quality of sub-optimal pre-clinical PET images. A novel iterative resolution subsets-based method to reduce noise and enhance resolution (RSEMD) has been demonstrated on examples of PET imaging studies of Alzheimer's disease (AD) plaques deposition in mice brains. MATERIALS AND METHODS: The RSEMD method was applied to imaging studies of non-invasive detection of beta-amyloid plaque in transgenic mouse models of AD...
August 2017: Journal of Applied Bioinformatics & Computational Biology
https://www.readbyqxmd.com/read/28932198/progress-and-prospects-of-crispr-cas-systems-in-insects-and-other-arthropods
#15
REVIEW
Dan Sun, Zhaojiang Guo, Yong Liu, Youjun Zhang
Clustered regularly interspaced short palindromic repeats (CRISPR) and the CRISPR-associated gene Cas9 represent an invaluable system for the precise editing of genes in diverse species. The CRISPR/Cas9 system is an adaptive mechanism that enables bacteria and archaeal species to resist invading viruses and phages or plasmids. Compared with zinc finger nucleases and transcription activator-like effector nucleases, the CRISPR/Cas9 system has the advantage of requiring less time and effort. This efficient technology has been used in many species, including diverse arthropods that are relevant to agriculture, forestry, fisheries, and public health; however, there is no review that systematically summarizes its successful application in the editing of both insect and non-insect arthropod genomes...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28932150/comparison-of-quality-of-obturation-and-instrumentation-time-using-hand-files-and-two-rotary-file-systems-in-primary-molars-a-single-blinded-randomized-controlled-trial
#16
Lavanya Govindaraju, Ganesh Jeevanandan, E M G Subramanian
OBJECTIVE: In permanent dentition, different rotary systems are used for canal cleaning and shaping. Rotary instrumentation in pediatric dentistry is an emerging concept. A very few studies have compared the efficiency of rotary instrumentation for canal preparation in primary teeth. Hence, this study was performed to compare the obturation quality and instrumentation time of two rotary files systems - Protaper, Mtwo with hand files in primary molars. MATERIALS AND METHODS: Forty-five primary mandibular molars were randomly allotted to one of the three groups...
July 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28931910/the-role-of-charge-balance-and-excited-state-levels-on-device-performance-of-exciplex-based-phosphorescent-organic-light-emitting-diodes
#17
Sangyeob Lee, Hyun Koo, Ohyun Kwon, Young Jae Park, Hyeonho Choi, Kwan Lee, Byungmin Ahn, Young Min Park
The design of novel exciplex-forming co-host materials provides new opportunities to achieve high device performance of organic light emitting diodes (OLEDs), including high efficiency, low driving voltage and low efficiency roll-off. Here, we report a comprehensive study of exciplex-forming co-host system in OLEDs including the change of co-host materials, mixing composition of exciplex in the device to improve the performance. We investigate various exciplex systems using 5-(3-4,6-diphenyl-1,3,5-triazin-2-yl)phenyl-3,9-diphenyl-9H-carbazole, 5-(3-4,6-diphenyl-1,3,5-triazin-2-yl)phenyl)-9-phenyl-9H-3,9'-bicarbazole, and 2-(3-(6,9-diphenyl-9H-carbazol-4-yl)phenyl)-4-phenylbenzo[4,5]thieno[3,2-d]pyrimidine, as electron transporting (ET: electron acceptor) hosts and 9,9'-dipenyl-9H, 9'H-3,3'-bicarbazole and 9-([1,1'-biphenyl]-4-yl)-9'-phenyl-9H,9'H-3,3'-bicarbazole as hole transporting (HT: electron donor) hosts...
September 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28930959/outcomes-after-concomitant-traumatic-brain-injury-and-hemorrhagic-shock-a-secondary-analysis-from-the-pragmatic-randomized-optimal-platelets-and-plasma-ratios-trial
#18
Samuel M Galvagno, Erin E Fox, Savitri N Appana, Sarah Baraniuk, Patrick L Bosarge, Eileen M Bulger, Rachel A Callcut, Bryan A Cotton, Michael Goodman, Kenji Inaba, Terence O'Keeffe, Martin A Schreiber, Charles E Wade, Thomas M Scalea, John B Holcomb, Deborah M Stein
BACKGROUND: Often the clinician is faced with a diagnostic and therapeutic dilemma in patients with concomitant traumatic brain injury (TBI) and hemorrhagic shock (HS), as rapid deterioration from either can be fatal. Knowledge about outcomes after concomitant TBI and HS may help prioritize the emergent management of these patients. We hypothesized that patients with concomitant TBI and HS (TBI + HS) had worse outcomes and required more intensive care compared with patients with only one of these injuries...
October 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28930941/thoracic-irrigation-prevents-retained-hemothorax-a-prospective-propensity-scored-analysis
#19
Nathan W Kugler, Thomas W Carver, David Milia, Jasmeet S Paul
BACKGROUND: Thoracic trauma resulting in hemothorax (HTx) is typically managed with thoracostomy tube (TT) placement; however, up to 20% of patients develop retained HTx which may necessitate further intervention for definitive management. While optimal management of retained HTx has been extensively researched, little is known about prevention of this complication. We hypothesized thoracic irrigation at the time of TT placement would significantly decrease the rate of retained HTx necessitating secondary intervention...
September 20, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28930932/complex-training-the-effect-of-exercise-selection-and-training-status-on-postactivation-potentiation-in-rugby-league-players
#20
David J Scott, Massimiliano Ditroilo, Phil A Marshall
Scott, DJ, Ditroilo, M, and Marshall, PA. Complex training: the effect of exercise selection and training status on postactivation potentiation in rugby league players. J Strength Cond Res 31(10): 2694-2703, 2017-This study compared the postactivation potentiation (PAP) response of the hex bar deadlift (HBD) and back squat (BS) exercises. The PAP response between different levels of athletes was also compared. Ten professional and 10 amateur rugby league players performed 2 experimental sessions. Participants performed a countermovement jump (CMJ) before and 2, 4, 6, 8, 10, 12, 14, and 16 minutes after a conditioning activity (CA) that contained 1 set of 3 repetitions at 93% 1 repetition maximum of either HBD or BS...
October 2017: Journal of Strength and Conditioning Research
keyword
keyword
64428
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"