keyword
MENU ▼
Read by QxMD icon Read
search

peak detection

keyword
https://www.readbyqxmd.com/read/28340283/comparative-analysis-of-pulmonary-hypertension-in-patients-treated-with-imatinib-nilotinib-and-dasatinib
#1
Mariko Minami, Takeshi Arita, Hiromi Iwasaki, Tsuyoshi Muta, Takatoshi Aoki, Kenichi Aoki, Satoshi Yamasaki, Takamitsu Matsushima, Koji Kato, Katsuto Takenaka, Kazuki Tanimoto, Tomohiko Kamimura, Ryosuke Ogawa, Koichi Akashi, Toshihiro Miyamoto
Pulmonary hypertension (PH) is a rare, but life-threatening, adverse event in patients treated with tyrosine kinase inhibitors (TKIs), such as dasatinib, but has not been fully evaluated in patients treated with imatinib or nilotinib. We used echocardiography to noninvasively assess the incidence of PH in 105 patients with chronic myeloid leukaemia (CML) treated with imatinib (n = 37), nilotinib (n = 30) or dasatinib (n = 38). The mean triscupid regurgitation peak gradient (TRPG), which reflects pulmonary arterial pressure, was 22·7 mmHg in the imatinib group, 23·1 mmHg in the nilotinib group and 23·4 mmHg for dasatinib group...
March 24, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28335210/application-of-l-aspartic-acid-capped-zns-mn-colloidal-nanocrystals-as-a-photosensor-for-the-detection-of-copper-ii-ions-in-aqueous-solution
#2
Jungho Heo, Cheong-Soo Hwang
Water-dispersible ZnS:Mn nanocrystals (NCs) were synthesized by capping the surface with polar L-aspartic acid (Asp) molecules. The obtained ZnS:Mn-Asp NC product was optically and physically characterized using the corresponding spectroscopic methods. The ultra violet-visible (UV-VIS) absorption spectrum and photoluminescence (PL) emission spectrum of the NCs showed broad peaks at 320 and 590 nm, respectively. The average particle size measured from the obtained high resolution-transmission electron microscopy (HR-TEM) image was 5...
April 27, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335018/dissecting-gamma-frequency-activity-during-human-memory-processing
#3
Michal T Kucewicz, Brent M Berry, Vaclav Kremen, Benjamin H Brinkmann, Michael R Sperling, Barbara C Jobst, Robert E Gross, Bradley Lega, Sameer A Sheth, Joel M Stein, Sandthitsu R Das, Richard Gorniak, S Matthew Stead, Daniel S Rizzuto, Michael J Kahana, Gregory A Worrell
Gamma frequency activity (30-150 Hz) is induced in cognitive tasks and is thought to reflect underlying neural processes. Gamma frequency activity can be recorded directly from the human brain using intracranial electrodes implanted in patients undergoing treatment for drug-resistant epilepsy. Previous studies have independently explored narrowband oscillations in the local field potential and broadband power increases. It is not clear, however, which processes contribute to human brain gamma frequency activity, or their dynamics and roles during memory processing...
March 13, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28334692/sers-active-liposome-ag-au-nanocomposite-for-nir-light-driven-drug-release
#4
Yangyang Zhao, Jing Zhao, Guiye Shan, Dongmei Yan, Yanwei Chen, Yichun Liu
It is important to control drug release and detect the distribution of drug molecules before and after release. In this work, liposome@AgAu nanocomposite is prepared for drug delivery, which not only can control drug release by near infrared laser irradiation but also can monitor drug molecules by surface enhanced Raman scattering (SERS) and fluorescence signal during the release process. The liposome@AgAu core/shell nanocomposite prepared by the galvanic replacement reaction (GRR) shows tunable localized surface plasmon resonance (LSPR) absorption peaks from visible to near-infrared region and good biocompatibility...
March 8, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28334259/population-distribution-and-range-expansion-of-the-invasive-mexican-rice-borer-lepidoptera-crambidae-in-louisiana
#5
Blake E Wilson, Julien M Beuzelin, Thomas E Reagan
The Mexican rice borer, Eoreuma loftini (Dyar) (Lepidoptera: Crambidae), is an invasive pest that was first introduced into southern Texas in 1980 and has been expanding its range eastward along the United States Gulf Coast. The pest attacks rice (Oryza sativa L.), sugarcane (Saccharum spp.), corn (Zea mays L.), and other graminaceous crops, and its establishment in Louisiana is expected to have severe economic impacts on crop production. Range expansion and population distribution of E. loftini were monitored with a network of 77 pheromone traps throughout southwestern Louisiana from 2013 to 2015...
March 2, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28334046/enhancing-sampling-design-in-mist-net-bat-surveys-by-accounting-for-sample-size-optimization
#6
Leonardo Carreira Trevelin, Roberto Leonan Morim Novaes, Paul François Colas-Rosas, Thayse Cristhina Melo Benathar, Carlos A Peres
The advantages of mist-netting, the main technique used in Neotropical bat community studies to date, include logistical implementation, standardization and sampling representativeness. Nonetheless, study designs still have to deal with issues of detectability related to how different species behave and use the environment. Yet there is considerable sampling heterogeneity across available studies in the literature. Here, we approach the problem of sample size optimization. We evaluated the common sense hypothesis that the first six hours comprise the period of peak night activity for several species, thereby resulting in a representative sample for the whole night...
2017: PloS One
https://www.readbyqxmd.com/read/28334006/assessing-various-infrared-ir-microscopic-imaging-techniques-for-post-mortem-interval-evaluation-of-human-skeletal-remains
#7
Claudia Woess, Seraphin Hubert Unterberger, Clemens Roider, Monika Ritsch-Marte, Nadin Pemberger, Jan Cemper-Kiesslich, Petra Hatzer-Grubwieser, Walther Parson, Johannes Dominikus Pallua
Due to the influence of many environmental processes, a precise determination of the post-mortem interval (PMI) of skeletal remains is known to be very complicated. Although methods for the investigation of the PMI exist, there still remains much room for improvement. In this study the applicability of infrared (IR) microscopic imaging techniques such as reflection-, ATR- and Raman- microscopic imaging for the estimation of the PMI of human skeletal remains was tested. PMI specific features were identified and visualized by overlaying IR imaging data with morphological tissue structures obtained using light microscopy to differentiate between forensic and archaeological bone samples...
2017: PloS One
https://www.readbyqxmd.com/read/28333967/reconstructing-spectral-cues-for-sound-localization-from-responses-to-rippled-noise-stimuli
#8
A John Van Opstal, Joyce Vliegen, Thamar Van Esch
Human sound localization in the mid-saggital plane (elevation) relies on an analysis of the idiosyncratic spectral shape cues provided by the head and pinnae. However, because the actual free-field stimulus spectrum is a-priori unknown to the auditory system, the problem of extracting the elevation angle from the sensory spectrum is ill-posed. Here we test different spectral localization models by eliciting head movements toward broad-band noise stimuli with randomly shaped, rippled amplitude spectra emanating from a speaker at a fixed location, while varying the ripple bandwidth between 1...
2017: PloS One
https://www.readbyqxmd.com/read/28333764/determinants-of-rotavirus-transmission-a-lag-non-linear-time-series-analysis
#9
Rolina D van Gaalen, Jan van de Kassteele, Susan J M Hahné, Patricia Bruijning-Verhagen, Jacco Wallinga
Rotavirus is a common viral infection among young children. As in many countries, the infection dynamics of rotavirus in the Netherlands are characterized by an annual winter peak, which was notably low in 2014. Previous work suggested an association between weather factors and both rotavirus transmission and incidence. From epidemic theory, we know that the proportion of susceptible individuals can affect disease transmission. We investigated how these factors are associated with rotavirus transmission in the Netherlands, and their impact on rotavirus transmission in 2014...
March 22, 2017: Epidemiology
https://www.readbyqxmd.com/read/28333651/automated-ecg-noise-detection-and-classification-system-for-unsupervised-healthcare-monitoring
#10
Udit Satija, Barathram Ramkumar, M Sabarimalai Manikandan
OBJECTIVE: Automatic detection and classification of noises can play a vital role in the development of robust unsupervised electrocardiogram (ECG) analysis systems. This paper proposes a novel unified framework for automatic detection, localization and classification of single and combined ECG noises. METHODS: The proposed framework consists of the modified ensemble empirical mode decomposition (CEEMD), the shortterm temporal feature extraction, and the decision rules based noise detection and classification...
March 22, 2017: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/28332823/from-dual-mode-triboelectric-nanogenerator-to-smart-tactile-sensor-a-multiplexing-design
#11
Tao Li, Jingdian Zou, Fei Xing, Meng Zhang, Xia Cao, Ning Wang, Zhong Lin Wang
Triboelectric nanogenerators (TENGs) can be applied for the next generation of artificial intelligent products, where skin-like tactile sensing advances the ability of robotics to feel and interpret environment. In this paper, a flexible and thin tactile sensor was developed on the basis of dual-mode TENGs. The effective transduction of touch and pressure stimulus into independent and interpretable electrical signals permits the instantaneous sensing of location and pressure with a plane resolution of 2 mm, a high-pressure-sensing sensitivity up to 28 mV·N(-1), and a linear pressure detection ranging from 40 to 140 N...
March 23, 2017: ACS Nano
https://www.readbyqxmd.com/read/28332561/inertial-bioluminescence-rhythms-at-the-capo-passero-km3net-italia-site-central-mediterranean-sea
#12
J Aguzzi, E Fanelli, T Ciuffardi, A Schirone, J Craig
In the deep sea, the sense of time is dependent on geophysical fluctuations, such as internal tides and atmospheric-related inertial currents, rather than day-night rhythms. Deep-sea neutrino telescopes instrumented with light detecting Photo-Multiplier Tubes (PMT) can be used to describe the synchronization of bioluminescent activity of abyssopelagic organisms with hydrodynamic cycles. PMT readings at 8 different depths (from 3069 to 3349 m) of the NEMO Phase 2 prototype, deployed offshore Capo Passero (Sicily) at the KM3NeT-Italia site, were used to characterize rhythmic bioluminescence patterns in June 2013, in response to water mass movements...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28332484/multivariate-regression-methods-for-estimating-velocity-of-ictal-discharges-from-human-microelectrode-recordings
#13
Jyun-You Liou, Elliot Smith, Lisa Bateman, Guy McKhann, Robert Goodman, Bradley Greger, Tyler Davis, Spencer Kellis, Paul House, Catherine Schevon
OBJECTIVE: Epileptiform discharges, an electrophysiological hallmark of seizures, can propagate across cortical tissue in a manner similar to traveling waves. Recent work has focused attention on the origination and propagation patterns of these discharges, yielding important clues to their source location and mechanism of travel. However, systematic studies of methods for measuring propagation are lacking. APPROACH: We analyzed epileptiform discharges in microelectrode array recordings of human seizures...
March 23, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28332441/changes-in-carotid-artery-intima-media-thickness-during-the-cardiac-cycle-a-comparative-study-in-early-childhood-mid-childhood-and-adulthood
#14
Kuna Rueb, Jonathan Mynard, Richard Liu, Melissa Wake, Peter Vuillermin, Anne-Louise Ponsonby, Diana Zannino, David P Burgner
BACKGROUND: Carotid intima-media thickness (CIMT), an ultrasonographic marker of cardiovascular risk, is increasingly used in adults and children. The choice of specific images used to quantify CIMT from a cine sequence is often based on image quality rather than on a consistent point in the cardiac cycle. This methodological study quantified the imprecision that may be introduced by variation of CIMT during the cardiac cycle. PATIENTS AND METHODS: Data from four-year-olds, 11 to 12-year-olds, and adults (n=30 each age group) were selected retrospectively from two population-derived studies...
March 23, 2017: VASA. Zeitschrift Für Gefässkrankheiten
https://www.readbyqxmd.com/read/28332161/real-time-pcr-identification-of-six-malassezia-species
#15
Amin Ilahi, Inès Hadrich, Sourour Neji, Houaida Trabelsi, Fattouma Makni, Ali Ayadi
Lipophilic yeast Malassezia species is widely found on the skin surface of humans and other animals. This fungus can cause pityriasis versicolor, Malassezia folliculitis, and seborrheic dermatitis. Still now, there is a problem with species identification of Malassezia with conventional methods. We developed a real-time polymerase chain reaction (PCR) assay with multiple hybridization probes for detecting M. globosa, M. furfur, M. restricta, M. sympodialis, M. slooffiae, and M. pachydermatis. The amplification curves and specific melting peaks of the probes hybridized with real-time PCR product were used for species identifications...
March 22, 2017: Current Microbiology
https://www.readbyqxmd.com/read/28331177/baseline-dependent-effects-of-amphetamine-on-attention-are-associated-with-striatal-dopamine-metabolism
#16
Karly M Turner, James Peak, Thomas H J Burne
Psychostimulants, such as amphetamine, are widely used to treat attentional deficits. In humans, response to dopaminergic medications is complex with improvement often dependent on baseline performance. Our goal was to determine if attention in rats could be improved by low dose amphetamine in a baseline-dependent manner by examining the relationship between task performance, drug response and monoamine levels in corticostriatal tissue. Firstly, rats performed a signal detection task with varying signal durations before administration of saline, 0...
March 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28331138/delayed-expression-of-circulating-tgf-%C3%AE-1-and-bmp-2-levels-in-human-nonunion-long-bone-fracture-healing
#17
Yoshiaki Hara, Mohammad Ghazizadeh, Hajime Shimizu, Hisashi Matsumoto, Nobuyuki Saito, Takanori Yagi, Kazuki Mashiko, Kunihiro Mashiko, Makoto Kawai, Hiroyuki Yokota
BACKGROUND: The healing process of bone fracture requires a well-controlled multistage and sequential order beginning immediately after the injury. However, complications leading to nonunion exist, creating serious problems and costs for patients. Transforming growth factor-beta 1 (TGF-β1) and bone morphogenic protein 2 (BMP-2) are two major growth factors involved in human bone fracture healing by promoting various stages of bone ossification. In this study, we aimed to determine the role of these factors during the fracture healing of human long bones and assess their impacts on nonunion condition...
2017: Journal of Nippon Medical School, Nippon Ika Daigaku Zasshi
https://www.readbyqxmd.com/read/28330768/estrous-detection-by-monitoring-ventral-tail-base-surface-temperature-using-a-wearable-wireless-sensor-in-cattle
#18
Ryotaro Miura, Koji Yoshioka, Toru Miyamoto, Hirofumi Nogami, Hironao Okada, Toshihiro Itoh
In the present study, the ventral tail base surface temperature (ST) was monitored using a wearable wireless sensor for estrus detection in cattle. Relationships among ST, behavioral estrus expression, ovulation, and changes in hormone profiles during the estrous cycle were examined. Holstein Friesian or Japanese Black female cattle were used in summer (August-September), autumn (October-November) and winter (January-February; three animals per season). On Day 11 of the estrous cycle (Day 0=the day of ovulation), the sensor was attached to the surface of the ventral tail base and ST was measured every 2min until Day 11 of the next estrous cycle...
March 11, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28330524/rapid-simultaneous-separation-of-four-oral-antidiabetic-drugs-and-quantitative-determination-of-glibenclamide-using-conventional-and-fused-core-silica-columns
#19
Laura Maria Fontes Prado Moraes, Gerson Antônio Pianetti, Isabela da Costa César, Christian Fernandes
Diabetes mellitus is a chronic disease with high and growing prevalence worldwide. Therefore, the development of fast and efficient methods for the QC of antidiabetic drugs is of fundamental importance. Two ultra-fast methods, using a conventional (C18 100 × 2.1 mm, 5 μm fully porous particle) column or a fused-core (C18 100 × 2.1 mm, 2.7 μm fused-core particle) column, were developed for the simultaneous determination of four antidiabetic drugs (chlorpropamide, glibenclamide, gliclazide, and glimepiride)...
February 15, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28330440/prevalence-and-predictors-of-intra-abdominal-hypertension-and-compartment-syndrome-in-surgical-patients-in-critical-care-units-at-kenyatta-national-hospital
#20
A Muturi, P Ndaguatha, Daniel Ojuka, A Kibet
BACKGROUND: Intra-abdominal hypertension (IAH) affects almost every organ sytem.If it is not detected early and corrected, mortality would be high. The prevalence of IAH and abdominal compartment syndrome (ACS) at Kenyatta National Hospital (KNH) critical care units is not known. The aim of this sudy was to determine the prevalence and factors associated with development of IAH/ACS among critically ill surgical patients. METHODS: This was a cross sectional descriptive study involving surgical patients in critical care units at KNH, carried out from March 2015 to October 2015...
March 23, 2017: BMC Emergency Medicine
keyword
keyword
12732
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"