keyword
MENU ▼
Read by QxMD icon Read
search

Horizontal approach

keyword
https://www.readbyqxmd.com/read/27914431/complex-modes-expansion-with-vector-projection-using-power-flow-to-simulate-lamb-waves-scattering-from-horizontal-cracks-and-disbonds
#1
Banibrata Poddar, Victor Giurgiutiu
This paper presents an inexpensive but accurate analytical method to calculate the scattering of straight-crested Lamb waves from cracks parallel to the plate surface. The same method is applicable for the disbond problem. In this method, the scatter field is expanded in terms of complex Lamb wave modes with unknown amplitudes. These unknown amplitudes are obtained from the boundary conditions using vector projection utilizing the power expression. The process works by projecting the stress conditions onto the displacement eigen-spaces of complex Lamb wave modes and vice versa...
September 2016: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/27908160/correspondence-optimization-in-2d-standardized-carotid-wall-thickness-map-by-description-length-minimization-a-tool-for-increasing-reproducibility-of-3d-ultrasound-based-measurements
#2
Yimin Chen, Bernard Chiu
PURPOSE: The previously described 2D standardized vessel-wall-plus-plaque thickness (VWT) maps constructed from 3D ultrasound vessel wall measurements using an arc-length (AL) scaling approach adjusted the geometric variability of carotid arteries and has allowed for the comparisons of VWT distributions in longitudinal and cross-sectional studies. However, this mapping technique did not optimize point correspondence of the carotid arteries investigated. The potential misalignment may lead to errors in point-wise VWT comparisons...
December 2016: Medical Physics
https://www.readbyqxmd.com/read/27907014/classification-and-verification-of-handwritten-signatures-with-time-causal-information-theory-quantifiers
#3
Osvaldo A Rosso, Raydonal Ospina, Alejandro C Frery
We present a new approach for handwritten signature classification and verification based on descriptors stemming from time causal information theory. The proposal uses the Shannon entropy, the statistical complexity, and the Fisher information evaluated over the Bandt and Pompe symbolization of the horizontal and vertical coordinates of signatures. These six features are easy and fast to compute, and they are the input to an One-Class Support Vector Machine classifier. The results are better than state-of-the-art online techniques that employ higher-dimensional feature spaces which often require specialized software and hardware...
2016: PloS One
https://www.readbyqxmd.com/read/27906169/automated-identification-of-mouse-visual-areas-with-intrinsic-signal-imaging
#4
Ashley L Juavinett, Ian Nauhaus, Marina E Garrett, Jun Zhuang, Edward M Callaway
Intrinsic signal optical imaging (ISI) is a rapid and noninvasive method for observing brain activity in vivo over a large area of the cortex. Here we describe our protocol for mapping retinotopy to identify mouse visual cortical areas using ISI. First, surgery is performed to attach a head frame to the mouse skull (∼1 h). The next day, intrinsic activity across the visual cortex is recorded during the presentation of a full-field drifting bar in the horizontal and vertical directions (∼2 h). Horizontal and vertical retinotopic maps are generated by analyzing the response of each pixel during the period of the stimulus...
January 2017: Nature Protocols
https://www.readbyqxmd.com/read/27903801/inhibition-of-an-aquatic-rhabdovirus-demonstrates-promise-of-a-broad-spectrum-antiviral-for-use-in-aquaculture
#5
Bethany F Balmer, Rachel L Powers, Ting-Hu Zhang, Jihye Lee, Frederic Vigant, Benhur Lee, Michael E Jung, Maureen K Purcell, Kevin Snekvik, Hector C Aguilar
: Many enveloped viruses cause devastating disease in aquaculture, resulting in significant economic impact. LJ001 is a broad-spectrum antiviral compound that inhibits enveloped viral infections by specifically targeting phospholipids in the lipid bilayer via production of singlet oxygen ((1)O2). This stabilizes positive curvature and decreases membrane fluidity, which inhibits viral-cell membrane fusion during viral entry. Based on previous mammalian studies and the requirement of light for activation of LJ001, we hypothesized that LJ001 may be useful as a preventative and/or therapeutic agent for enveloped viral infections in aquaculture...
November 30, 2016: Journal of Virology
https://www.readbyqxmd.com/read/27900736/preparation-of-horizontal-single-walled-carbon-nanotubes-arrays
#6
REVIEW
Pan Li, Jin Zhang
The synthesis of SWNTs has achieved great success with the development of synthetic methodologies. From the viewpoint of exploiting the exceptional electrical properties of single-walled carbon nanotubes (SWNTs) in advanced applications, one of the most difficult challenges is how to assemble the SWNTs with high degrees of alignment and purity in electronic conducting (mainly semiconducting) behavior into functional nanodevices. Numerous approaches have been developed to reach this goal, which could be divided into two categories...
December 2016: Topics in Current Chemistry (Journal)
https://www.readbyqxmd.com/read/27895636/genomic-and-transcriptomic-evidence-for-carbohydrate-consumption-among-microorganisms-in-a-cold-seep-brine-pool
#7
Weipeng Zhang, Wei Ding, Bo Yang, Renmao Tian, Shuo Gu, Haiwei Luo, Pei-Yuan Qian
The detailed lifestyle of microorganisms in deep-sea brine environments remains largely unexplored. Using a carefully calibrated genome binning approach, we reconstructed partial to nearly-complete genomes of 51 microorganisms in biofilms from the Thuwal cold seep brine pool of the Red Sea. The recovered metagenome-assembled genomes (MAGs) belong to six different phyla: Actinobacteria, Proteobacteria, Candidatus Cloacimonetes, Candidatus Marinimicrobia, Bathyarchaeota, and Thaumarchaeota. By comparison with close relatives of these microorganisms, we identified a number of unique genes associated with organic carbon metabolism and energy generation...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27892531/a-genome-wide-association-study-identifies-a-horizontally-transferred-bacterial-surface-adhesin-gene-associated-with-antimicrobial-resistant-strains
#8
Masato Suzuki, Keigo Shibayama, Koji Yahara
Carbapenems are a class of last-resort antibiotics; thus, the increase in bacterial carbapenem-resistance is a serious public health threat. Acinetobacter baumannii is one of the microorganisms that can acquire carbapenem-resistance; it causes severe nosocomial infection, and is notoriously difficult to control in hospitals. Recently, a machine-learning approach was first used to analyze the genome sequences of hundreds of susceptible and resistant A. baumannii strains, including those carrying commonly acquired resistant mechanisms, to build a classifier that can predict strain resistance...
November 28, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27875797/determining-lower-threshold-concentrations-for-synergistic-effects
#9
Maj-Britt Andersen Bjergager, Kristoffer Dalhoff, Andreas Kretschmann, Katrine Banke Nørgaard, Philipp Mayer, Nina Cedergreen
Though only occurring rarely, synergistic interactions between chemicals in mixtures have long been a point of focus. Most studies analyzing synergistic interactions used unrealistically high chemical concentrations. The aim of the present study is to determine the threshold concentration below which proven synergists cease to act as synergists towards the aquatic crustacean Daphnia magna. To do this, we compared several approaches and test-setups to evaluate which approach gives the most conservative estimate for the lower threshold for synergy for three known azole synergists...
October 24, 2016: Aquatic Toxicology
https://www.readbyqxmd.com/read/27875027/tribology-of-flexible-and-sliding-spinal-implants-development-of-experimental-and-numerical-models
#10
Sophie Le Cann, Julien Chaves-Jacob, Jean-Marie Rossi, Jean-Marc Linares, Patrick Chabrand
New fusionless devices are being developed to get over the limits of actual spinal surgical treatment, based on arthrodesis. However, due to their recentness, no standards exist to test and validate those devices, especially concerning the wear. A new tribological first approach to the definition of an in vitro wear protocol to study wear of flexible and sliding spinal devices is presented in this article, and was applied to a new concept. A simplified synthetic spine portion (polyethylene) was developed to reproduce a simple supra-physiological spinal flexion (10° between two vertebrae)...
November 22, 2016: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/27872612/systems-biomedicine-of-rabies-delineates-the-affected-signaling-pathways
#11
Sadegh Azimzadeh Jamalkandi, Sayed-Hamidreza Mozhgani, Hamid Gholami Pourbadie, Mehdi Mirzaie, Farshid Noorbakhsh, Behrouz Vaziri, Alireza Gholami, Naser Ansari-Pour, Mohieddin Jafari
The prototypical neurotropic virus, rabies, is a member of the Rhabdoviridae family that causes lethal encephalomyelitis. Although there have been a plethora of studies investigating the etiological mechanism of the rabies virus and many precautionary methods have been implemented to avert the disease outbreak over the last century, the disease has surprisingly no definite remedy at its late stages. The psychological symptoms and the underlying etiology, as well as the rare survival rate from rabies encephalitis, has still remained a mystery...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27872606/an-exploratory-study-to-detect-m%C3%A3-ni%C3%A3-re-s-disease-in-conventional-mri-scans-using-radiomics
#12
E L van den Burg, M van Hoof, A A Postma, A M L Janssen, R J Stokroos, H Kingma, R van de Berg
OBJECTIVE: The purpose of this exploratory study was to investigate whether a quantitative image analysis of the labyrinth in conventional magnetic resonance imaging (MRI) scans using a radiomics approach showed differences between patients with Ménière's disease (MD) and the control group. MATERIALS AND METHODS: In this retrospective study, MRI scans of the affected labyrinths of 24 patients with MD were compared to the MRI scans of labyrinths of 29 patients with an idiopathic asymmetrical sensorineural hearing loss...
2016: Frontiers in Neurology
https://www.readbyqxmd.com/read/27866998/tomographic-inversion-of-time-domain-resistivity-and-chargeability-data-for-the-investigation-of-landfills-using-a-priori-information
#13
Giorgio De Donno, Ettore Cardarelli
In this paper, we present a new code for the modelling and inversion of resistivity and chargeability data using a priori information to improve the accuracy of the reconstructed model for landfill. When a priori information is available in the study area, we can insert them by means of inequality constraints on the whole model or on a single layer or assigning weighting factors for enhancing anomalies elongated in the horizontal or vertical directions. However, when we have to face a multilayered scenario with numerous resistive to conductive transitions (the case of controlled landfills), the effective thickness of the layers can be biased...
November 17, 2016: Waste Management
https://www.readbyqxmd.com/read/27864711/mesenchymal-stem-cells-derived-exosomal-micrornas-contribute-to-wound-inflammation
#14
REVIEW
Dongdong Ti, Haojie Hao, Xiaobing Fu, Weidong Han
Clinical and experimental studies have highlighted the significance of inflammation in coordinating wound repair and regeneration. However, it remains challenging to control the inflammatory response and tolerance at systemic levels without causing toxicity to injured tissues. Mesenchymal stem cells (MSCs) possess potent immunomodulatory properties and facilitate tissue repair by releasing exosomes, which generate a suitable microenvironment for inflammatory resolution. Exosomes contain several effective bioactive molecules and act as a cell-cell communication vehicle to influence cellular activities in recipient cells...
November 18, 2016: Science China. Life Sciences
https://www.readbyqxmd.com/read/27864136/the-underlying-mechanisms-of-genetic-innovation-and-speciation-in-the-family-corynebacteriaceae-a-phylogenomics-approach
#15
Xiao-Yang Zhi, Zhao Jiang, Ling-Ling Yang, Ying Huang
The pangenome of a bacterial species population is formed by genetic reduction and genetic expansion over the long course of evolution. Gene loss is a pervasive source of genetic reduction, and (exogenous and endogenous) gene gain is the main driver of genetic expansion. To understand the genetic innovation and speciation of the family Corynebacteriaceae, which cause a wide range of serious infections in humans and animals, we analyzed the pangenome of this family, and reconstructed its phylogeny using a phylogenomics approach...
November 15, 2016: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/27863866/insights-into-bedrock-surface-morphology-using-low-cost-passive-seismic-surveys-and-integrated-geostatistical-analysis
#16
S Trevisani, J Boaga, L Agostini, A Galgaro
The HVSR (Horizontal to Vertical Spectral Ratio) technique is very popular in the context of seismic microzonation and for the mapping of shallow seismic reflectors, such as the sediment/bedrock transition surface. This easy-to-deploy single station passive seismic technique permits the collection of a considerable amount of HVSR data in a cost-effective way. It is not surprising that some recent studies have adopted single station micro-tremor analyses in order to retrieve information on geological structures in 1D, 2D or even 3D reconstructions...
November 15, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27858574/quantitative-anatomical-analysis-and-clinical-experience-with-mini-pterional-and-mini-orbitozygomatic-approaches-for-intracranial-aneurysm-surgery
#17
Kaan Yagmurlu, Sam Safavi-Abbasi, Evgenii Belykh, M Yashar S Kalani, Peter Nakaji, Albert L Rhoton, Robert F Spetzler, Mark C Preul
OBJECTIVE The aim of this investigation was to modify the mini-pterional and mini-orbitozygomatic (mini-OZ) approaches in order to reduce the amount of tissue traumatization caused and to compare the use of the 2 approaches in the removal of circle of Willis aneurysms based on the authors' clinical experience and quantitative analysis. METHODS Three formalin-fixed adult cadaveric heads injected with colored silicone were examined. Surgical freedom and angle of attack of the mini-pterional and mini-OZ approaches were measured at 9 anatomical points, and the measurements were compared...
November 18, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27857874/minimizing-septectomy-for-endoscopic-transsphenoidal-approaches-to-the-sellar-and-suprasellar-regions-a-cadaveric-morphometric-study
#18
Hermes G Garcia, Marc Otten, Marc Pyfer, Saurabh J Singhal, Alfred Marc Iloreta, Varun R Kshettry, Christopher J Farrell, Gurston Nyquist, Marc Rosen, James J Evans
The purpose of this study was to evaluate the effect of posterior septectomy size on surgical exposure and surgical freedom during the endoscopic transsphenoidal approach to the sella and parasellar region. Dissections were performed on 10 embalmed cadaver heads. Dissections started with wide bilateral sphenoidotomies, lateralization of middle turbinates, and a 5-mm posterior septectomy. The posterior septectomy was increased in 5-mm increments to a maximum of 35 mm, followed by bilateral middle turbinectomies...
December 2016: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/27855079/chromosomal-amplification-of-the-blaoxa-58-carbapenemase-gene-in-a-proteus-mirabilis-clinical-isolate
#19
Delphine Girlich, Rémy A Bonnin, Pierre Bogaerts, Morgane De Laveleye, Daniel T Huang, Laurent Dortet, Philippe Glaser, Youri Glupczynski, Thierry Naas
Horizontal gene transfer may occur between distantly related bacteria thus leading to genetic plasticity and in some cases to acquisition of novel resistance traits. Proteus mirabilis is an Enterobacterial species responsible for human infections that may express various acquired ß-lactam resistance genes, including different classes of carbapenemase genes. Here we report a Proteus mirabilis clinical isolate (1091) displaying resistance to penicillin, including temocillin, together with reduced susceptibility to carbapenems and susceptibility to expanded-spectrum cephalosporins...
November 14, 2016: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27847568/intradural-procedural-time-to-assess-technical-difficulty-of-superciliary-keyhole-and-pterional-approaches-for-unruptured-middle-cerebral-artery-aneurysms
#20
Yeon-Ju Choi, Wonsoo Son, Ki-Su Park, Jaechan Park
OBJECTIVE: This study used the intradural procedural time to assess the overall technical difficulty involved in surgically clipping an unruptured middle cerebral artery (MCA) aneurysm via a pterional or superciliary approach. The clinical and radiological variables affecting the intradural procedural time were investigated, and the intradural procedural time compared between a superciliary keyhole approach and a pterional approach. METHODS: During a 5.5-year period, patients with a single MCA aneurysm were enrolled in this retrospective study...
November 2016: Journal of Korean Neurosurgical Society
keyword
keyword
99337
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"