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https://www.readbyqxmd.com/read/29449871/the-elastic-modulus-for-maize-stems
#1
Loay Al-Zube, Wenhuan Sun, Daniel Robertson, Douglas Cook
Background: Stalk lodging is a serious challenge in the production of maize and sorghum. A comprehensive understanding of lodging will likely require accurate characterizations of the mechanical properties of such plants. One of the most important mechanical properties for structural analysis of bending is the modulus of elasticity. The purpose of this study was to measure the modulus of elasticity of dry, mature maize rind tissues using three different loading modes ( bending , compression and tensile ), and to determine the accuracy and reliability of each test method...
2018: Plant Methods
https://www.readbyqxmd.com/read/29448137/differential-metabolism-of-l-phenylalanine-in-the-formation-of-aromatic-volatiles-in-melon-cucumis-melo-l-fruit
#2
Itay Gonda, Rachel Davidovich-Rikanati, Einat Bar, Shery Lev, Pliaa Jhirad, Yuval Meshulam, Guy Wissotsky, Vitaly Portnoy, Joseph Burger, Arthur A Schaffer, Yaakov Tadmor, James J Giovannoni, Zhangjun Fei, Aaron Fait, Nurit Katzir, Efraim Lewinsohn
Studies on the active pathways and the genes involved in the biosynthesis of L-phenylalanine-derived volatiles in fleshy fruits are sparse. Melon fruit rinds converted stable-isotope labeled L-phe into more than 20 volatiles. Phenylpropanes, phenylpropenes and benzenoids are apparently produced via the well-known phenylpropanoid pathway involving phenylalanine ammonia lyase (PAL) and being (E)-cinnamic acid a key intermediate. Phenethyl derivatives seemed to be derived from L-phe via a separate biosynthetic route not involving (E)-cinnamic acid and PAL...
February 12, 2018: Phytochemistry
https://www.readbyqxmd.com/read/29446669/segmental-arterial-mediolysis-abdominal-imaging-of-and-disease-course-in-111-patients
#3
Sailen G Naidu, Christine O Menias, Rahmi Oklu, Robert S Hines, Kinan Alhalabi, Gerges Makar, Fadi E Shamoun, Stanislav Henkin, Robert D McBane
OBJECTIVE: The purpose of this study is to identify the imaging characteristics of segmental arterial mediolysis (SAM) at presentation and establish the longitudinal course of disease. MATERIALS AND METHODS: We retrospectively identified patients with SAM at a single institution from 2000 through 2015. Diagnosis was based on published guidelines with multidisciplinary consensus. Imaging studies obtained at initial evaluation were reviewed to evaluate imaging findings and vascular territory distribution...
February 15, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29389865/the-listeria-monocytogenes-key-virulence-determinants-hly-and-prfa-are-involved-in-biofilm-formation-and-aggregation-but-not-colonization-of-fresh-produce
#4
Robert Price, Victor Jayeola, Jeffrey Niedermeyer, Cameron Parsons, Sophia Kathariou
Listeria monocytogenes has been extensively studied as a model facultative intracellular pathogen. While the roles of major virulence factors in host-pathogen interactions have been extensively characterized, recent work suggests that some of these factors can also contribute to environmental proliferation of this pathogen. In this study, we characterized two non-hemolytic transposon mutants of strain 2011L-2858 (serotype 1/2b), implicated in the 2011 listeriosis outbreak via whole cantaloupe, for their capacity to form biofilms on polystyrene, aggregate, and colonize cantaloupe rind...
February 1, 2018: Pathogens
https://www.readbyqxmd.com/read/29378729/atrial-fibrillation-and-cause-specific-risks-of-pulmonary-embolism-and-ischemic-stroke
#5
Erin M Hald, Ludvig B Rinde, Maja-Lisa Løchen, Ellisiv B Mathiesen, Tom Wilsgaard, Inger Njølstad, Sigrid K Brækkan, John-Bjarne Hansen
BACKGROUND: Atrial fibrillation (AF) is a well-established risk factor for ischemic stroke (IS). Emerging evidence also indicates an association between AF and pulmonary embolism (PE). Because IS may potentially mediate the observed risk of PE in AF, we aimed to assess the impact of AF on the cause-specific risks of PE and IS in a large cohort recruited from the general population. METHODS AND RESULTS: We observed 29 842 participants from 3 surveys of the Tromsø study (inclusion in 1994-1995, 2001-2002, and 2007-2008) to the end of 2012...
January 29, 2018: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29362365/fungal-networks-shape-dynamics-of-bacterial-dispersal-and-community-assembly-in-cheese-rind-microbiomes
#6
Yuanchen Zhang, Erik K Kastman, Jeffrey S Guasto, Benjamin E Wolfe
Most studies of bacterial motility have examined small-scale (micrometer-centimeter) cell dispersal in monocultures. However, bacteria live in multispecies communities, where interactions with other microbes may inhibit or facilitate dispersal. Here, we demonstrate that motile bacteria in cheese rind microbiomes use physical networks created by filamentous fungi for dispersal, and that these interactions can shape microbial community structure. Serratia proteamaculans and other motile cheese rind bacteria disperse on fungal networks by swimming in the liquid layers formed on fungal hyphae...
January 23, 2018: Nature Communications
https://www.readbyqxmd.com/read/29358802/effect-of-plant-extracts-on-lipid-and-protein-oxidation-of-mackerel-scomber-scombrus-mince-during-frozen-storage
#7
Berna Özalp Özen, Ayla Soyer
The effects of different plant extracts [green tea extract (GTE), grape seed extract (GSE), and pomegranate rind extract (PRE)] at a level of 100 ppm equivalent phenolics and butylated hydroxytoluene (BHT) on the changes in quality of fish (Scomber scombrus) mince during 6 months frozen storage at -18 ± 1 °C were investigated. During storage, significant oxidative reactions in both the lipids and proteins were observed with the increase in thiobarbituric acid reactive substances (TBARS) and carbonyls and decrease in sulphydryl groups and protein solubility...
January 2018: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/29356551/exploration-of-the-smallest-diameter-tin-nanowires-achievable-with-electrodeposition-sub-7-nm-sn-nanowires-produced-by-electrodeposition-from-a-supercritical-fluid
#8
Philip N Bartlett, Richard Beanland, Jennifer Burt, Mahboba Hasan, Andrew Lee Hector, Reza J Kashtiban, William Levason, Andrew Lodge, Samuel Marks, Jay Naik, Akhtar Rind, Gillian Reid, Peter Richardson, Jeremy Sloan, David C Smith
Electrodeposition of Sn from supercritical difluoromethane has been performed into anodic alumina templates with pores down to 3 nm in diameter and mesoporous silica templates with pores of diameter 1.5 nm. Optimized deposits have been characterized using X-ray diffraction, scanning electron microscopy, scanning transmission electron microscopy (bright field, high angle annular dark field and energy dispersive X-ray elemental mapping). Crystalline 13 nm diameter Sn nanowires have been electrodeposited in symmetric pore anodic alumina...
January 22, 2018: Nano Letters
https://www.readbyqxmd.com/read/29336154/methods-for-determining-cell-wall-bound-phenolics-in-maize-stem-tissues
#9
Rogelio Santiago, Ana Lopez-Malvar, Carlos Souto, Jaime Barros-Rios
We compared two methods with different sample pretreatment, hydrolysis, and separation procedures to extract cell wall-bound phenolics. The samples were pith and rind tissues from six maize inbred lines reportedly containing different levels of cell wall-bound phenolics. In method 1, pretreated samples were extracted with a C18 solid-phase extraction cartridge, and it took 6 days to complete. In method 2, phenolics were extracted from crude samples with ethyl acetate, it took 2 days to complete and the cost per sample was reduced more than 60 %...
January 16, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29333754/a-guide-to-analysis-and-reconstruction-of-serial-block-face-scanning-electron-microscopy-data
#10
E Cocks, M Taggart, F C Rind, K White
Serial block face scanning electron microscopy (SBF-SEM) is a relatively new technique that allows the acquisition of serially sectioned, imaged and digitally aligned ultrastructural data. There is a wealth of information that can be obtained from the resulting image stacks but this presents a new challenge for researchers - how to computationally analyse and make best use of the large datasets produced. One approach is to reconstruct structures and features of interest in 3D. However, the software programmes can appear overwhelming, time-consuming and not intuitive for those new to image analysis...
January 15, 2018: Journal of Microscopy
https://www.readbyqxmd.com/read/29324837/health-economic-assessment-of-gd-eob-dtpa-mri-versus-eccm-mri-and-multi-detector-ct-for-diagnosis-of-hepatocellular-carcinoma-in-china
#11
Xiaoning He, Jing Wu, Anke-Peggy Holtorf, Harald Rinde, Shuangshuang Xie, Wen Shen, Jiancun Hou, Xuehua Li, Ziping Li, Jiaming Lai, Yuting Wang, Lin Zhang, Jian Wang, Xuesong Li, Kuansheng Ma, Feng Ye, Han Ouyang, Hong Zhao
Limited data exists in China on the comparative cost of gadolinium ethoxybenzyl diethylenetriamine magnetic resonance imaging (Gd-EOB-DTPA-MRI) with other imaging techniques. This study compared the total cost of Gd-EOB-DTPA-MRI with multidetector computed tomography (MDCT) and extracellular contrast media-enhanced MRI (ECCM-MRI) as initial imaging procedures in patients with suspected hepatocellular carcinoma (HCC). We developed a decision-tree model on the basis of the Chinese clinical guidelines for HCC, which was validated by clinical experts from China...
2018: PloS One
https://www.readbyqxmd.com/read/29291459/autochthonous-facility-specific-microbiota-dominates-washed-rind-austrian-hard-cheese-surfaces-and-its-production-environment
#12
Narciso M Quijada, Evelyne Mann, Martin Wagner, David Rodríguez-Lázaro, Marta Hernández, Stephan Schmitz-Esser
Cheese ripening involves the succession of complex microbial communities that are responsible for the organoleptic properties of the final products. The food processing environment can act as a source of natural microbial inoculation, especially in traditionally manufactured products. Austrian Vorarlberger Bergkäse (VB) is an artisanal washed-rind hard cheese produced in the western part of Austria without the addition of external ripening cultures. Here, the composition of the bacterial communities present on VB rinds and on different processing surfaces from two ripening cellars was assessed by near full length 16S rRNA gene amplification, cloning and sequencing...
December 28, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/29203912/bacterial-resistance-to-silver-nanoparticles-and-how-to-overcome-it
#13
Aleš Panáček, Libor Kvítek, Monika Smékalová, Renata Večeřová, Milan Kolář, Magdalena Röderová, Filip Dyčka, Marek Šebela, Robert Prucek, Ondřej Tomanec, Radek Zbořil
Silver nanoparticles have already been successfully applied in various biomedical and antimicrobial technologies and products used in everyday life. Although bacterial resistance to antibiotics has been extensively discussed in the literature, the possible development of resistance to silver nanoparticles has not been fully explored. We report that the Gram-negative bacteria Escherichia coli 013, Pseudomonas aeruginosa CCM 3955 and E. coli CCM 3954 can develop resistance to silver nanoparticles after repeated exposure...
January 2018: Nature Nanotechnology
https://www.readbyqxmd.com/read/29190534/abundance-and-potential-contribution-of-gram-negative-cheese-rind-bacteria-from-austrian-artisanal-hard-cheeses
#14
Stephan Schmitz-Esser, Monika Dzieciol, Eva Nischler, Elisa Schornsteiner, Othmar Bereuter, Evelyne Mann, Martin Wagner
Many different Gram-negative bacteria have been shown to be present on cheese rinds. Their contribution to cheese ripening is however, only partially understood until now. Here, cheese rind samples were taken from Vorarlberger Bergkäse (VB), an artisanal hard washed-rind cheese from Austria. Ripening cellars of two cheese production facilities in Austria were sampled at the day of production and after 14, 30, 90 and 160days of ripening. To obtain insights into the possible contribution of Advenella, Psychrobacter, and Psychroflexus to cheese ripening, we sequenced and analyzed the genomes of one strain of each genus isolated from VB cheese rinds...
November 26, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/29162124/geraniin-extracted-from-the-rind-of-nephelium-lappaceum-binds-to-dengue-virus-type-2-envelope-protein-and-inhibits-early-stage-of-virus-replication
#15
Siti Aisyah Abdul Ahmad, Uma D Palanisamy, Bimo A Tejo, Miaw Fang Chew, Hong Wai Tham, Sharifah Syed Hassan
BACKGROUND: The rapid rise and spread in dengue cases, together with the unavailability of safe vaccines and effective antiviral drugs, warrant the need to discover and develop novel anti-dengue treatments. In this study the antiviral activity of geraniin, extracted from the rind of Nephelium lappaceum, against dengue virus type-2 (DENV-2) was investigated. METHODS: Geraniin was prepared from Nephelium lappaceum rind by reverse phase C-18 column chromatography. Cytotoxicity of geraniin towards Vero cells was evaluated using MTT assay while IC50 value was determined by plaque reduction assay...
November 21, 2017: Virology Journal
https://www.readbyqxmd.com/read/29155888/correction-potentiated-virucidal-activity-of-pomegranate-rind-extract-pre-and-punicalagin-against-herpes-simplex-virus-hsv-when-co-administered-with-zinc-ii-ions-and-antiviral-activity-of-pre-against-hsv-and-aciclovir-resistant-hsv
#16
https://www.readbyqxmd.com/read/29153637/quality-of-life-and-functional-capacity-outcomes-in-the-momentum-3-trial-at-6-months-a-call-for-new-metrics-for-left-ventricular-assist-device-patients
#17
Jennifer A Cowger, Yoshifumi Naka, Keith D Aaronson, Douglas Horstmanshof, Sanjeev Gulati, Debbie Rinde-Hoffman, Sean Pinney, Sirtaz Adatya, David J Farrar, Ulrich P Jorde
BACKGROUND: The Multicenter Study of MAGLEV Technology in Patients Undergoing Mechanical Circulatory Support Therapy with HeartMate 3 (MOMENTUM 3) clinical trial demonstrated improved 6-month event-free survival, but a detailed analysis of health-related quality of life (HR-QOL) and functional capacity (FC) was not presented. Further, the effect of early serious adverse events (SAEs) on these metrics and on the general ability to live well while supported with a left ventricular assist system (LVAS) warrants evaluation...
October 24, 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/29151845/measuring-the-compressive-modulus-of-elasticity-of-pith-filled-plant-stems
#18
Loay A Al-Zube, Daniel J Robertson, Jean N Edwards, Wenhuan Sun, Douglas D Cook
Background: The compressional modulus of elasticity is an important mechanical property for understanding stalk lodging, but this property is rarely available for thin-walled plant stems such as maize and sorghum because excised tissue samples from these plants are highly susceptible to buckling. The purpose of this study was to develop a testing protocol that provides accurate and reliable measurements of the compressive modulus of elasticity of the rind of pith-filled plant stems. The general approach was to relying upon standard methods and practices as much as possible, while developing new techniques as necessary...
2017: Plant Methods
https://www.readbyqxmd.com/read/29150475/uptodate-adherence-to-grade-criteria-for-strong-recommendations-an-analytical-survey
#19
Thomas Agoritsas, Arnaud Merglen, Anja Fog Heen, Annette Kristiansen, Ignacio Neumann, Juan P Brito, Romina Brignardello-Petersen, Paul E Alexander, David M Rind, Per O Vandvik, Gordon H Guyatt
INTRODUCTION: UpToDate is widely used by clinicians worldwide and includes more than 9400 recommendations that apply the Grading of Recommendations Assessment, Development and Evaluation (GRADE) framework. GRADE guidance warns against strong recommendations when certainty of the evidence is low or very low (discordant recommendations) but has identified five paradigmatic situations in which discordant recommendations may be justified. OBJECTIVES: Our objective was to document the strength of recommendations in UpToDate and assess the frequency and appropriateness of discordant recommendations...
November 16, 2017: BMJ Open
https://www.readbyqxmd.com/read/29101602/garcinia-mangostana-linn-displays-antidepressant-like-and-pro-cognitive-effects-in-a-genetic-animal-model-of-depression-a-bio-behavioral-study-in-the-flinders-sensitive-line-rat
#20
Inge Oberholzer, Marisa Möller, Brendan Holland, Olivia M Dean, Michael Berk, Brian H Harvey
There is abundant evidence for both disorganized redox balance and cognitive deficits in major depressive disorder (MDD). Garcinia mangostana Linn (GM) has anti-oxidant activity. We studied the antidepressant-like and pro-cognitive effects of raw GM rind in Flinders Sensitive Line (FSL) rats, a genetic model of depression, following acute and chronic treatment compared to a reference antidepressant, imipramine (IMI). The chemical composition of the GM extract was analysed for levels of α- and γ-mangostin...
November 3, 2017: Metabolic Brain Disease
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