keyword
MENU ▼
Read by QxMD icon Read
search

distributed, massed

keyword
https://www.readbyqxmd.com/read/28544898/aerosol-and-snow-transfer-processes-an-investigation-on-the-behavior-of-water-soluble-organic-compounds-and-ionic-species
#1
Elena Barbaro, Roberta Zangrando, Sara Padoan, Ornela Karroca, Giuseppa Toscano, Warren R L Cairns, Carlo Barbante, Andrea Gambaro
The concentrations of water-soluble compounds (ions, carboxylic acids, amino acids, sugars, phenolic compounds) in aerosol and snow have been determined at the coastal Italian base "Mario Zucchelli" (Antarctica) during the 2014-2015 austral summer. The main aim of this research was to investigate the air-snow transfer processes of a number of classes of chemical compounds and investigate their potential as tracers for specific sources. The composition and particle size distribution of Antarctic aerosol was measured, and water-soluble compounds accounted for 66% of the PM10 total mass concentration...
May 17, 2017: Chemosphere
https://www.readbyqxmd.com/read/28544897/size-resolved-aerosol-water-soluble-ions-during-the-summer-and-winter-seasons-in-beijing-formation-mechanisms-of-secondary-inorganic-aerosols
#2
Zirui Liu, Yuzhu Xie, Bo Hu, Tianxue Wen, Jinyuan Xin, Xingru Li, Yuesi Wang
Size-segregated water-soluble ionic species (WSIs) were measured using an Anderson cascade impactor from Jul. to Aug. 2008 and from Dec. 2009 to Feb. 2010 in urban Beijing. The results showed that fine particles (PM2.1, Dp < 2.1 μm) accounted for ∼49% (summer) and ∼34% (winter) of the total particulate mass, and WSIs accounted for 23-82% of the mass concentration of PM2.1. Secondary inorganic aerosols (SIAs, the sum of SO4(2-), NO3(-) and NH4(+)) accounted for more than 30% of the fine particles, which were greatly elevated during particle pollution events (PM events), thereby leading to an alteration of the size distributions of SO4(2-) and NO3(-) to nearly single fine-mode distributions peaking at 0...
May 17, 2017: Chemosphere
https://www.readbyqxmd.com/read/28544887/silver-nanoparticles-in-seawater-a-dynamic-mass-balance-at-part-per-trillion-silver-concentrations
#3
Claudio Toncelli, Kyriaki Mylona, Ioanna Kalantzi, Anastasia Tsiola, Paraskevi Pitta, Manolis Tsapakis, Spiros A Pergantis
This study investigates the dynamic processes affecting silver (Ag) nanoparticles that have been spiked into seawater at environmentally relevant concentrations (200 and 2000ngAgL(-1)). Seawater samples were taken at regular time intervals from multiple microcosm tanks and analysed rapidly, without any sample preparation, using a recently developed flow injection on-line dilution single particle inductively coupled plasma mass spectrometry method. Dissolution was found to be the predominant process of Ag nanoparticle transformation, with its rate being influenced by the type and thickness of the nanoparticle organic coating...
May 22, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28544671/a-common-thermal-niche-among-geographically-diverse-populations-of-the-widely-distributed-tree-species-eucalyptus-tereticornis-no-evidence-for-adaptation-to-climate-of-origin
#4
John E Drake, Angelica Vårhammar, Dushan Kumarathunge, Belinda E Medlyn, Sebastian Pfautsch, Peter B Reich, David T Tissue, Oula Ghannoum, Mark G Tjoelker
Impacts of climate warming depend on the degree to which plants are constrained by adaptation to their climate-of-origin or exhibit broad climatic suitability. We grew cool-origin, central and warm-origin provenances of Eucalyptus tereticornis in an array of common temperature environments from 18 to 35.5°C to determine if this widely distributed tree species consists of geographically contrasting provenances with differentiated and narrow thermal niches, or if provenances share a common thermal niche. The temperature responses of photosynthesis, respiration, and growth were equivalent across the three provenances, reflecting a common thermal niche despite a 2,200 km geographic distance and 13°C difference in mean annual temperature at seed origin...
May 23, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28544651/genetic-determination-of-body-fat-distribution-and-the-attributive-influence-on-metabolism
#5
Ellen Fehlert, Róbert Wagner, Caroline Ketterer, Anja Böhm, Jürgen Machann, Louise Fritsche, Fausto Machicao, Fritz Schick, Harald Staiger, Norbert Stefan, Hans-Ulrich Häring, Andreas Fritsche, Martin Heni
OBJECTIVE: Genome-wide association studies (GWAS) have identified single-nucleotide polymorphisms (SNPs) associated with estimates of body fat distribution. Using predefined risk allele scores, the correlation of these scores with precisely quantified body fat distribution assessed by magnetic resonance (MR) imaging techniques and with metabolic traits was investigated. METHODS: Data from 4,944 MR scans from 915 subjects of European ancestry were analyzed. Body fat distribution was determined by MR imaging and liver fat content by (1) H-MR spectroscopy...
May 25, 2017: Obesity
https://www.readbyqxmd.com/read/28543615/improved-image-quality-and-reduced-power-deposition-in-the-spine-at-3-t-using-extremely-high-permittivity-materials
#6
Kirsten Koolstra, Peter Börnert, Wyger Brink, Andrew Webb
PURPOSE: To explore the effect of using extremely high permittivity (εr ∼1,000) materials on image quality and power requirements of spine imaging at 3 T. THEORY AND METHODS: A linear array of high permittivity dielectric blocks made of lead zirconate titanate (PZT) was designed and characterized by electromagnetic simulations and experiments. Their effect on the transmit efficiency, receive sensitivity, power deposition, and diagnostic image quality was analyzed in vivo in 10 healthy volunteers...
May 22, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28543513/lc-ms-ms-isomeric-profiling-of-permethylated-n-glycans-derived-from-serum-haptoglobin-of-hepatocellular-carcinoma-hcc-and-cirrhotic-patients
#7
Yifan Huang, Shiyue Zhou, Jianhui Zhu, David M Lubman, Yehia Mechref
Early stage detection and cancer treatment demand the identification of reliable biomarkers. Over the past decades, efforts have been devoted to assess the variation of glycosylation level as well as the glycan structures of proteins in blood or serum, associated with the development and/or progression of several cancers, including liver. Herein, an LC-MS/MS-based analysis was conducted to define the glycosylation patterns of haptoglobin glycoprotein derived from sera collected from cirrhotic and hepatocellular carcinoma (HCC) patients...
May 25, 2017: Electrophoresis
https://www.readbyqxmd.com/read/28543273/differential-dispersal-and-the-allee-effect-create-power-law-behavior-distribution-of-spot-infestations-during-mountain-pine-beetle-outbreaks
#8
James A Powell, Martha J Garlick, Barbara J Bentz, Nicholas Friedenberg
Mountain pine beetles (MPB, Dendroctonus ponderosae Hopkins) are aggressive insects attacking Pinus host trees. Pines use defensive resin to overwhelm attackers, creating an Allee effect requiring beetles to attack en masse to successfully reproduce. MPB kill hosts, leaving observable, dying trees with red needles. Landscape patterns of infestation depend on MPB dispersal, which decreases with host density. Away from contiguously impacted patches (low beetle densities), infestations are characterized by apparently random spots (of 1-10 trees)...
May 22, 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/28542917/characterizing-the-performance-of-pipe-bombs
#9
Jimmie C Oxley, James L Smith, Evan T Bernier, Fredrick Sandstrom, Gregory G Weiss, Gunther W Recht, David Schatzer
Pipe bombs of steel or PVC fragment in reproducible patterns when similarly configured. The power of the explosion correlates with number, mass, and size of the fragments recovered, where a large number of small, low-mass fragments indicate a high-power event and vice versa. In discussing performance, describing pipe fragmentation pattern by fragment weight distribution mapping (FWDM) or fragment surface area distribution mapping (FSADM) was useful. When fillers detonated, detonation velocities of ~4.4 mm/μs were measured...
May 24, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28542901/mechanisms-and-implications-of-a-type-iv-functional-response-for-short-term-intake-rate-of-dry-matter-in-large-mammalian-herbivores
#10
J C Mezzalira, O J F Bonnet, P C de F Carvalho, L Fonseca, C Bremm, C C Mezzalira, E A Laca
1.The functional response (i.e. the relationship between consumers' intake rate and resource density) is central in plant-herbivore interactions. Its shape and the biological processes leading to it have significant implications for both foraging theory and ecology of grazing systems. 2.A type IV functional response (i.e. dome-shaped relationship) of short-term intake rate of dry matter (intake while grazing) has rarely been reported for large herbivores and the conditions that can lead to it are poorly understood...
May 19, 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/28542612/interface-condition-for-the-darcy-velocity-at-the-water-oil-flood-front-in-the-porous-medium
#11
Xiaolong Peng, Yong Liu, Baosheng Liang, Zhimin Du
Flood front is the jump interface where fluids distribute discontinuously, whose interface condition is the theoretical basis of a mathematical model of the multiphase flow in porous medium. The conventional interface condition at the jump interface is expressed as the continuous Darcy velocity and fluid pressure (named CVCM). Our study has inspected this conclusion. First, it is revealed that the principle of mass conservation has no direct relation to the velocity conservation, and the former is not the true foundation of the later, because the former only reflects the kinetic characteristic of the fluid particles at one position(the interface), but not the different two parts of fluid on the different side of the interface which required by the interface conditions...
2017: PloS One
https://www.readbyqxmd.com/read/28542572/arachidonic-acid-containing-phosphatidylcholine-increases-due-to-microglial-activation-in-ipsilateral-spinal-dorsal-horn-following-spared-sciatic-nerve-injury
#12
Tomohiro Banno, Takao Omura, Noritaka Masaki, Hideyuki Arima, Dongmin Xu, Ayako Okamoto, Michael Costigan, Alban Latremoliere, Yukihiro Matsuyama, Mitsutoshi Setou
Peripheral nerve injury induces substantial molecular changes in the somatosensory system that leads to maladaptive plasticity and cause neuropathic pain. Understanding the molecular pathways responsible for the development of neuropathic pain is essential to the development of novel rationally designed therapeutics. Although lipids make up to half of the dry weight of the spinal cord, their relation with the development of neuropathic pain is poorly understood. We aimed to elucidate the regulation of spinal lipids in response to neuropathic peripheral nerve injury in mice by utilizing matrix-assisted laser desorption/ionization imaging mass spectrometry, which allows visualization of lipid distribution within the cord...
2017: PloS One
https://www.readbyqxmd.com/read/28542335/interventions-that-effectively-target-anopheles-funestus-mosquitoes-could-significantly-improve-control-of-persistent-malaria-transmission-in-south-eastern-tanzania
#13
Emmanuel W Kaindoa, Nancy S Matowo, Halfan S Ngowo, Gustav Mkandawile, Arnold Mmbando, Marcelina Finda, Fredros O Okumu
Malaria is transmitted by many Anopheles species whose proportionate contributions vary across settings. We re-assessed the roles of Anopheles arabiensis and Anopheles funestus, and examined potential benefits of species-specific interventions in an area in south-eastern Tanzania, where malaria transmission persists, four years after mass distribution of long-lasting insecticide-treated nets (LLINs). Monthly mosquito sampling was done in randomly selected households in three villages using CDC light traps and back-pack aspirators, between January-2015 and January-2016, four years after the last mass distribution of LLINs in 2011...
2017: PloS One
https://www.readbyqxmd.com/read/28542036/a-survey-of-renal-impairment-pharmacokinetic-studies-for-new-oncology-drug-approvals-in-the-usa-from-2010-to-early-2015-a-focus-on-development-strategies-and-future-directions
#14
Jim J Xiao, Jiyun S Chen, Bert L Lum, Richard A Graham
The US Food and Drug Administration (FDA) issued a guidance document in 2010 on pharmacokinetic (PK) studies in renal impairment (RI) on the basis of observations that substances such as uremic toxins might result in altered drug metabolism and excretion. No specific recommendations for oncology drugs were included. We surveyed the publicly available FDA review documents of 29 small molecule oncology drugs approved between 2010 and the first quarter of 2015. The objectives were as follows: (i) summarize the impact of RI on PK at the time of the initial new drug application; (ii) identify limitations of the guidance; and (iii) outline an integrated approach to study the impact of RI on these drugs...
May 24, 2017: Anti-cancer Drugs
https://www.readbyqxmd.com/read/28541761/hydrophilically-modified-self-assembling-%C3%AE-tocopherol-derivative-as-niosomal-nanocarrier-for-improving-clarithromycin-oral-bioavailability
#15
Shafi Ullah, Muhammad Raza Shah, Mohammad Shoaib, Muhammad Imran, Syed Wadood Ali Shah, Farid Ahmed, Qamar Gul, Ismail Shah
Synthesis of biocompatible and cost-effective novel nonionic surfactants from renewable resources has been the subject of greater scientific interest for enhancing the bioavailability of less water-soluble drugs. The present study focuses on the synthesis of α-tocopherol-based novel biocompatible nonionic surfactant and its evaluation for forming clarithromycin-loaded niosomal drug delivery system. α-tocopherol was hydrophilically modified through multistep reactions and characterized using mass and (1)H NMR spectroscopic techniques...
May 25, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28541523/attraction-of-the-euwallacea-sp-near-fornicatus-coleoptera-curculionidae-to-quercivorol-and-to-infestations-in-avocado
#16
John A Byers, Yonatan Maoz, Anat Levi-Zada
The Euwallacea sp. near fornicatus (Euwallacea sp. 1 hereafter) feeds on many woody shrubs and trees and is a pest of avocado, Persea americana Mill., in several countries including Israel and the United States. Quercivorol baits are commercially available for Euwallacea sp. 1 females (males do not fly), but their attractive strength compared to other pheromones and potential for mass trapping are unknown. We used sticky traps baited with quercivorol released at 0.126 mg/d (1×) and at 0.01×, 0.1×, and 10× relative rates to obtain a dose-response curve of Euwallacea sp...
May 24, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28540491/a-temperature-dependent-physiologically-based-model-for-the-invasive-apple-snail-pomacea-canaliculata
#17
Gianni Gilioli, Sara Pasquali, Pablo R Martín, Nils Carlsson, Luigi Mariani
In order to set priorities in management of costly and ecosystem-damaging species, policymakers and managers need accurate predictions not only about where a specific invader may establish but also about its potential abundance at different geographical scales. This is because density or biomass per unit area of an invasive species is a key predictor of the magnitude of environmental and economic impact in the invaded habitat. Here, we present a physiologically based demographic model describing and explaining the population dynamics of a widespread freshwater invader, the golden apple snail Pomacea canaliculata, which is causing severe environmental and economic impacts in invaded wetlands and rice fields in Southeastern Asia and has also been introduced to North America and Europe...
May 24, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28540432/central-overweight-and-obesity-in-polish-schoolchildren-aged-7-18%C3%A2-years-secular-changes-of-waist-circumference-between-1966-and-2012
#18
Agnieszka Suder, Aleksandra Gomula, Slawomir Koziel
We investigated secular trends of body mass index (BMI) and waist circumference (WC) in Polish schoolchildren examined through a period of almost 50 years. Data on height, weight and WC came from four cross-sectional surveys conducted in Poland between 1966 and 2012, covering 34,005 boys and 34,008 girls. Raw data of BMI and WC were standardized for age classes. Statistical analyses included the Kruskal-Willis test and Pearson Chi-square test. BMI and WC increased during the studied period; however, the growth was higher for WC (increase by 0...
May 24, 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/28539858/relationship-between-proxies-for-type-ii-fiber-type-and-resting-blood-pressure-in-division-i-american-football-athletes
#19
Christopher A DiCesare, James R Adams, Randal P Claytor, Rose M Ward, Ronald H Cox
OBJECTIVE: The risk for cardiovascular disease is well-documented. Perhaps surprisingly, specific athletic populations, including American football players, exhibit increased risk for cardiovascular disease as presented by elevated blood pressure. There is evidence suggesting a link between muscle fiber type distribution and resting blood pressure. Acknowledging this association, it becomes important to clarify an individual's risk for developing cardiovascular disease later in adulthood...
April 2017: International Journal of Health Sciences
https://www.readbyqxmd.com/read/28538693/preparation-characterization-and-antioxidant-activity-evaluation-of-liposomes-containing-water-soluble-hydroxytyrosol-from-olive
#20
Jiao-Jiao Yuan, Frank G F Qin, Jun-Ling Tu, Bing Li
Due to the multiple hydroxyl groups in its structure, hydroxytyrosol (HT) is very sensitive to air and light and has very strong instability and hydrophilicity that affect its biological activity. This study attempted to prepare liposomes containing water-soluble HT to improve the bioavailability and biocompatibility of the target drug. The preparation process factors (temperature, mass ratio of phospholipid (PL) and cholesterol (CH), Tween-80 volume, HT mass) were studied and response surface methodology (RSM) was applied to optimize the conditions...
May 24, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
keyword
keyword
106015
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"