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https://www.readbyqxmd.com/read/28437960/wind-ranging-and-velocimetry-with-low-peak-power-and-long-duration-modulated-laser
#1
Eiichi Yoshikawa, Tomoo Ushio
A novel approach to simultaneous wind ranging and velocimetry using low peak power, long-duration modulated laser pulse transmissions is proposed. Received signals backscattered by aerosol particles are processed by a multi-reference matched-filter (MRMF) which performs matched filter processing between the received signal and several reference signals in parallel and outputs a range-velocity profile of received power. Ranging and velocimetry are performed simultaneously by estimating received power, radial velocity, and velocity dispersion from a velocity profile at an arbitrary range in the range-velocity profile...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437901/one-dimensional-stitching-interferometry-assisted-by-a-triple-beam-interferometer
#2
Junpeng Xue, Lei Huang, Bo Gao, Konstantine Kaznatcheev, Mourad Idir
In this work, we proposed for stitching interferometry to use a triple-beam interferometer to measure both the distance and the tilt for all sub-apertures before the stitching process. The relative piston between two neighboring sub-apertures is then calculated by using the data in the overlapping area. Comparisons are made between our method, and the classical least-squares principle stitching method. Our method can improve the accuracy and repeatability of the classical stitching method when a large number of sub-aperture topographies are taken into account...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437777/testing-decontaminated-sediments-as-a-substrate-for-ornamentals-in-field-nursery-plantations
#3
Francesca Ugolini, Costanza Calzolari, Giuseppe Mario Lanini, Luciano Massetti, Stefania Pollaki, Antonio Raschi, Francesco Sabatini, Giacomo Tagliaferri, Fabrizio Ungaro, Daniele Massa, Maurizio Antonetti, Carlos Garcia Izquierdo, Cristina Macci, Grazia Masciandaro
When canals and harbours are dredged, huge amount of polluted sediments has to be stocked and transported to the landfill with incredibly high costs of management. Among the remediation techniques for the reclamation of polluted sediments and soils, phytoremediation represents a sustainable and effective technique though still not fully promoted or commercialized. In this study we have tested the suitability for plant nursing of a substrate resulting from sediments dredged from a canal and treated with phytoremediation...
April 21, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28437768/glomeromycota-communities-survive-extreme-levels-of-metal-toxicity-in-an-orphan-mining-site
#4
I Sánchez-Castro, V Gianinazzi-Pearson, J C Cleyet-Marel, E Baudoin, D van Tuinen
Abandoned tailing basins and waste heaps of orphan mining sites are of great concern since extreme metal contamination makes soil improper for any human activity and is a permanent threat for nearby surroundings. Although spontaneous revegetation can occur, the process is slow or unsuccessful and rhizostabilisation strategies to reduce dispersal of contaminated dust represent an option to rehabilitate such sites. This requires selection of plants tolerant to such conditions, and optimization of their fitness and growth...
April 21, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28437718/nontargeted-metabolomics-approach-for-the-differentiation-of-cultivation-ages-of-mountain-cultivated-ginseng-leaves-using-uhplc-qtof-ms
#5
Xiangwei Chang, Juanjuan Zhang, Dekun Li, Dazheng Zhou, Yuling Zhang, Jincheng Wang, Bing Hu, Aichun Ju, Zhengliang Ye
The adulteration or falsification of the cultivation age of mountain cultivated ginseng (MCG) has been a serious problem in the commercial MCG market. To develop an efficient discrimination tool for the cultivation age and to explore potential age-dependent markers, an optimized ultra high-performance liquid chromatography/quadrupole time-of-flight mass spectrometry (UHPLC/QTOF-MS)-based metabolomics approach was applied in the global metabolite profiling of 156 MCG leaf (MGL) samples aged from 6 to 18 years...
April 13, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28437688/application-of-near-infrared-spectroscopy-for-the-rapid-quality-assessment-of-radix-paeoniae-rubra
#6
Hao Zhan, Jing Fang, Liying Tang, Hongjun Yang, Hua Li, Zhuju Wang, Bin Yang, Hongwei Wu, Meihong Fu
Near-infrared (NIR) spectroscopy with multivariate analysis was used to quantify gallic acid, catechin, albiflorin, and paeoniflorin in Radix Paeoniae Rubra, and the feasibility to classify the samples originating from different areas was investigated. A new high-performance liquid chromatography method was developed and validated to analyze gallic acid, catechin, albiflorin, and paeoniflorin in Radix Paeoniae Rubra as the reference. Partial least squares (PLS), principal component regression (PCR), and stepwise multivariate linear regression (SMLR) were performed to calibrate the regression model...
April 20, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28437677/localization-of-enhancer-of-try-and-cpc1-protein-in-arabidopsis-root-epidermis
#7
Rumi Tominaga-Wada, Tetsuya Kurata, Takuji Wada
CAPRICE (CPC) is a R3-type MYB transcription factor, which induces root-hair cell differentiation in Arabidopsis thaliana. The CPC homologous gene ENHANCER TRY AND CPC1 (ETC1) has a similar function to CPC, and acts in concert with CPC. The CPC protein moves between root epidermal cells, from hairless cells to the neighboring cells, and promotes root-hair differentiation. Therefore, ETC1 is predicted to have movement ability similar to that of CPC. In this study, we generated ETC1:ETC1:GFP and CPC:ETC1:GFP transgenic plants to clarify whether ETC1 exhibits cell-to-cell movement...
April 4, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28437665/jasmonic-acid-signalling-and-the-plant-holobiont
#8
REVIEW
Lilia C Carvalhais, Peer M Schenk, Paul G Dennis
The plant holobiont - which is the plant and its associated microbiome - is increasingly viewed as an evolving entity. Some interacting microbes that compose the microbiome assist plants in combating pathogens and herbivorous insects. However, knowledge of the factors that influence the microbiome in the context of defence signalling pathways is still in its infancy. Recent research reported that changes in jasmonic acid (JA) and salicylic acid signalling affects the root microbiome of Arabidopsis thaliana...
April 21, 2017: Current Opinion in Microbiology
https://www.readbyqxmd.com/read/28437662/life-in-earth-the-root-microbiome-to-the-rescue
#9
REVIEW
Tim H Mauchline, Jacob G Malone
Manipulation of the soil microbiome holds great promise for contributing to more environmentally benign agriculture, with soil microbes such as Pseudomonas promoting plant growth and effectively suppressing pathogenic microorganisms. Next-generation sequencing has enabled a new generation of research into soil microbiomes, presenting the opportunity to better understand and exploit these valuable resources. Soil bacterial communities are both highly complex and variable, and contain vast interspecies and intraspecies diversity, both of which respond to environmental variation...
April 21, 2017: Current Opinion in Microbiology
https://www.readbyqxmd.com/read/28437621/c21-steroidal-glycosides-from-cynanchum-auriculatum-and-their-neuroprotective-effects-against-h2o2-induced-damage-in-pc12%C3%A2-cells
#10
Xicheng Qian, Baocai Li, Peng Li, Dong Wang, Weifeng Dai, Mi Zhang
Twenty-three undescribed previously C21 steroidal glycosides, named saccatols D-K and cynsaccatols I-W, together with six known analogs were isolated from the roots of Cynanchum auriculatum Royle ex Wight (Apocynaceae). Their structures were elucidated by a variety of spectroscopic techniques, as well as HRESIMS and GC method. All isolated compounds were tested their neuroprotective effects on the model of H2O2-induced damage to PC12 cells. Except saccatols D-F, J, cynsaccatol V and wilfoside A, other twenty-three isolates produced significantly activities against H2O2-induced cell damage (P < 0...
April 21, 2017: Phytochemistry
https://www.readbyqxmd.com/read/28437609/source-and-biological-response-of-biochar-organic-compounds-released-into-water-relationships-with-bio-oil-composition-and-carbonization-degree
#11
Michele Ghidotti, Daniele Fabbri, Ondřej Mašek, Colin Logan Mackay, Marco Montalti, Andreas Hornung
Water-soluble organic compounds (WSOCs) were extracted from corn stalk biochar produced at increasing pyrolysis temperatures (350-650°C) and from the corresponding vapors, collected as bio-oil. WSOCs were characterized by gas chromatography (semi-volatile fraction), negative electron spray ionization high resolution mass spectrometry (hydrophilic fraction) and fluorescence spectroscopy. The pattern of semi-volatile WSOCs in bio-oil was dominated by aromatic products from lignocellulose, while in biochar was featured by saturated carboxylic acids from hemi/cellulose and lipids with concentrations decreased with decreasing H/C ratios...
April 24, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28437588/ehanced-solar-water-splitting-by-swift-charge-separation-in-au-feooh-sandwiched-single-crystalline-fe2o3-nanoflake-photoelectrodes
#12
Lei Wang, Nhat Truong Nguyen, Yajun Zhang, Yingpu Bi, Patrik Schmuki
In this work, single crystalline α-Fe2O3 nanoflakes (NFs) are formed in a highly dense array by Au seeding of a Fe substrate by a thermal oxidation technique. The NFs are conformally decorated with a thin FeOOH cocatalyst layer. Photoelectrochemical (PEC) measurements show that this photoanode with the α-Fe2O3/FeOOH NFs rooted on the Au/Fe structure exhibits a significantly enhanced PEC water oxidation performance compared to the plain α-Fe2O3 nanostructure on the Fe substrate. The α-Fe2O3/FeOOH NFs on Au/Fe photoanode yields a photocurrent density of 3...
April 24, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28437565/relaxed-ordered-subset-preconditioned-alternating-projection-algorithm-for-pet-reconstruction-with-automated-penalty-weight-selection
#13
C Ross Schmidtlein, Yizun Lin, Si Li, Andrzej Krol, Bradley J Beattie, John L Humm, Yuesheng Xu
PURPOSE: Performance of the preconditioned alternating projection algorithm (PAPA) using relaxed ordered subsets (ROS) with a non-smooth penalty function was investigated in positron emission tomography (PET). A higher order total variation (HOTV) regularizer was applied and a method for unsupervised selection of penalty weights based on the measured data is introduced. METHODS: A ROS version of PAPA with HOTV penalty (ROS-HOTV-PAPA) for PET image reconstruction was developed and implemented...
April 24, 2017: Medical Physics
https://www.readbyqxmd.com/read/28437546/root-cause-analysis-and-actions-for-the-prevention-of-medical-errors-quality-improvement-and-resident-education
#14
Ryan Charles, Brandon Hood, Joseph M DeRosier, John W Gosbee, James P Bagian, Ying Li, Michelle S Caird, J Sybil Biermann, Mark E Hake
The quality of care delivered by orthopedic surgeons continues to grow in importance. Multiple orthopedic programs, organizations, and committees have been created to measure the quality of surgical care and reduce the incidence of medical adverse events. Structured root cause analysis and actions (RCA2) has become an area of interest. If performed thoroughly, RCA2 has been shown to reduce surgical errors across many subspecialties. The Accreditation Council for Graduate Medical Education has a new mandate for programs to involve residents in quality improvement processes...
April 24, 2017: Orthopedics
https://www.readbyqxmd.com/read/28437194/comparison-of-three-final-irrigation-activation-techniques-effects-on-canal-cleanness-smear-layer-removal-and-dentinal-tubule-penetration-of-two-root-canal-sealers
#15
Elmas Turkel, Emel Olga Onay, Mete Ungor
OBJECTIVE: The aim of this study was to compare three final irrigation activation techniques with respect to their effects on debridement efficacy, smear layer removal, and dentinal tubule penetration of two different root canal sealers. BACKGROUND DATA: Different applications to improve the delivery of irrigating solutions within the root canal system are currently being investigated, as not all of the mechanisms and effects of these techniques have been clearly identified...
February 22, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28437159/specific-host-responsive-associations-between-medicago-truncatula-accessions-and-sinorhizobium-strains
#16
Théophile Kazmierczak, Marianna Nagymihály, Florian Lamouche, Quentin Barrière, Ibtissem Guefrachi, Benoit Alunni, Mouna Ouadghiri, Jamal Ibijbijen, Éva Kondorosi, Peter Mergaert, Véronique Gruber
Legume plants interact with rhizobia to form nitrogen-fixing root nodules. Legume-rhizobium interactions are specific and only compatible rhizobia and plant species will lead to nodule formation. Even within compatible interactions, the genotype of both the plant and the bacterial symbiont will impact on the efficiency of nodule functioning and nitrogen-fixation activity. The model legume Medicago truncatula forms nodules with several species of the Sinorhizobium genus. However, the efficiency of these bacterial strains is highly variable...
April 24, 2017: Molecular Plant-microbe Interactions: MPMI
https://www.readbyqxmd.com/read/28437136/enumeration-of-ancestral-configurations-for-matching-gene-trees-and-species-trees
#17
Filippo Disanto, Noah A Rosenberg
Given a gene tree and a species tree, ancestral configurations represent the combinatorially distinct sets of gene lineages that can reach a given node of the species tree. They have been introduced as a data structure for use in the recursive computation of the conditional probability under the multispecies coalescent model of a gene tree topology given a species tree, the cost of this computation being affected by the number of ancestral configurations of the gene tree in the species tree. For matching gene trees and species trees, we obtain enumerative results on ancestral configurations...
April 24, 2017: Journal of Computational Biology: a Journal of Computational Molecular Cell Biology
https://www.readbyqxmd.com/read/28436985/functional-screen-of-msi2-interactors-identifies-an-essential-role-for-syncrip-in-myeloid-leukemia-stem-cells
#18
Ly P Vu, Camila Prieto, Elianna M Amin, Sagar Chhangawala, Andrei Krivtsov, M Nieves Calvo-Vidal, Timothy Chou, Arthur Chow, Gerard Minuesa, Sun Mi Park, Trevor S Barlowe, James Taggart, Patrick Tivnan, Raquel P Deering, Lisa P Chu, Jeong-Ah Kwon, Cem Meydan, Javier Perales-Paton, Arora Arshi, Mithat Gönen, Christopher Famulare, Minal Patel, Elisabeth Paietta, Martin S Tallman, Yuheng Lu, Jacob Glass, Francine E Garret-Bakelman, Ari Melnick, Ross Levine, Fatima Al-Shahrour, Marcus Järås, Nir Hacohen, Alexia Hwang, Ralph Garippa, Christopher J Lengner, Scott A Armstrong, Leandro Cerchietti, Glenn S Cowley, David Root, John Doench, Christina Leslie, Benjamin L Ebert, Michael G Kharas
The identity of the RNA-binding proteins (RBPs) that govern cancer stem cells remains poorly characterized. The MSI2 RBP is a central regulator of translation of cancer stem cell programs. Through proteomic analysis of the MSI2-interacting RBP network and functional shRNA screening, we identified 24 genes required for in vivo leukemia. Syncrip was the most differentially required gene between normal and myeloid leukemia cells. SYNCRIP depletion increased apoptosis and differentiation while delaying leukemogenesis...
April 24, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28436692/rhizospheric-soil-enzyme-activities-and-phytominimg-potential-of-aeluropus-lagopoides-and-cyperus-conglomeratus-growing-in-contaminated-soils-at-the-banks-of-artificial-lake-of-reclaimed-wastewater
#19
Zahid Khorshid Abbas
This work investigates the phytoremediation potential of Aeluropus lagopoides and Cyperus conglomeratus, growing indigenously in the vicinity of artificial lake of reclaimed water in Tabuk, Saudi Arabia. The sampling sites were located at different distance from the waste water treatment plants. Trace metal contents were higher in roots than shoots in both these plants. Soil urease activity in rhizophere increased linearly along the sampling sites, however, soil alkaline phosphatase and β-glucosidase activities was greater at site 2 but were declined at site 3...
April 24, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28436685/factors-affecting-the-performance-of-horizontal-flow-constructed-treatment-wetland-vegetated-with-cyperus-papyrus-for-municipal-wastewater-treatment
#20
Sohair I Abou-Elela, Mohamed A Elekhnawy, Magdy T Khalil, Mohamed S Hellal
The effect of hydraulic loading rate (HLR) and hydraulic retention time (HRT) on the bioremediation of municipal wastewater using a pilot scale subsurface horizontal flow constructed treatment wetland (HFCTW) vegetated with Cyprus papyrus was investigated. Three different HLRs were applied to the treatment system namely; 0.18, 0.10 and 0.07 m(3)/m(2). d with corresponding HRTs of 1.8, 3.2 and 4.7 days, respectively. The flow rate was 8 m(3)/ d and the average organic loading rate (OLR) was 0.037 kg BOD/m(3)/d...
April 24, 2017: International Journal of Phytoremediation
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