keyword
MENU ▼
Read by QxMD icon Read
search

Stock and flow

keyword
https://www.readbyqxmd.com/read/28099815/stocks-flows-and-distribution-of-critical-metals-in-embedded-electronics-in-passenger-vehicles
#1
Eliette Restrepo, Amund N Løvik, Patrick Wäger, Rolf Widmer, Radek Lonka, Daniel B Müller
One of the major applications of critical metals (CMs) is in electrical and electronic equipment (EEE), which is increasingly embedded in other products, notably passenger vehicles. However, recycling strategies for future CM quantities in end-of-life vehicles (ELVs) are poorly understood, mainly due to a limited understating of the complexity of automotive embedded EEE. We introduce a harmonization of the network structure of automotive electronics that enables a comprehensive quantification of CMs in all embedded EEE in a vehicle...
January 18, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28088007/impairment-of-host-liver-repopulation-by-transplanted-hepatocytes-in-aged-rats-and-the-release-by-short-term-growth-hormone-treatment
#2
Peggy Stock, Maximilian Bielohuby, Martin S Staege, Mei-Ju Hsu, Martin Bidlingmaier, Bruno Christ
Hepatocyte transplantation is an alternative to whole liver transplantation. Yet, efficient liver repopulation by transplanted hepatocytes is low in livers of old animals. This restraint might be because of the poor proliferative capacity of aged donor hepatocytes or the regenerative impairment of the recipient livers. The age-dependent liver repopulation by transplanted wild-type hepatocytes was investigated in juvenile and senescent rats deficient in dipeptidyl-peptidase IV. Repopulation was quantified by flow cytometry and histochemical estimation of dipeptidyl-peptidase IV enzyme activity of donor cells in the negative host liver...
January 11, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28076383/time-varying-transition-probability-matrix-estimation-and-its-application-to-brand-share-analysis
#3
Tomoaki Chiba, Hideitsu Hino, Shotaro Akaho, Noboru Murata
In a product market or stock market, different products or stocks compete for the same consumers or purchasers. We propose a method to estimate the time-varying transition matrix of the product share using a multivariate time series of the product share. The method is based on the assumption that each of the observed time series of shares is a stationary distribution of the underlying Markov processes characterized by transition probability matrices. We estimate transition probability matrices for every observation under natural assumptions...
2017: PloS One
https://www.readbyqxmd.com/read/28063833/the-hibernating-mobile-phone-dead-storage-as-a-barrier-to-efficient-electronic-waste-recovery
#4
Garrath T Wilson, Grace Smalley, James R Suckling, Debra Lilley, Jacquetta Lee, Richard Mawle
Hibernation, the dead storage period when a mobile phone is still retained by the user at its end-of-life, is both a common and a significant barrier to the effective flow of time-sensitive stock value within a circular economic model. In this paper we present the findings of a survey of 181 mobile phone owners, aged between 18-25years old, living and studying in the UK, which explored mobile phone ownership, reasons for hibernation, and replacement motives. This paper also outlines and implements a novel mechanism for quantifying the mean hibernation period based on the survey findings...
January 4, 2017: Waste Management
https://www.readbyqxmd.com/read/28048545/we-de-207a-04-advances-in-radiological-neuro-endovascular-interventional-imaging
#5
S Rudin
: 1. Parallels in the evolution of x-ray angiographic systems and devices used for minimally invasive endovascular therapy Charles Strother - DSA, invented by Dr. Charles Mistretta at UW-Madison, was the technology which enabled the development of minimally invasive endovascular procedures. As DSA became widely available and the potential benefits for accessing the cerebral vasculature from an endovascular approach began to be apparent, industry began efforts to develop tools for use in these procedures...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048454/we-de-207a-00-advances-in-image-guided-neurointerventions-clinical-pull-and-technology-push
#6
Jeffrey Siewerdsen, Rebecca Fahrig
: 1. Parallels in the evolution of x-ray angiographic systems and devices used for minimally invasive endovascular therapy Charles Strother - DSA, invented by Dr. Charles Mistretta at UW-Madison, was the technology which enabled the development of minimally invasive endovascular procedures. As DSA became widely available and the potential benefits for accessing the cerebral vasculature from an endovascular approach began to be apparent, industry began efforts to develop tools for use in these procedures...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047800/we-de-207a-01-parallels-in-the-evolution-of-x-ray-angiographic-systems-and-devices-used-for-minimally-invasive-endovascular-therapy
#7
C Strother
: 1. Parallels in the evolution of x-ray angiographic systems and devices used for minimally invasive endovascular therapy Charles Strother - DSA, invented by Dr. Charles Mistretta at UW-Madison, was the technology which enabled the development of minimally invasive endovascular procedures. As DSA became widely available and the potential benefits for accessing the cerebral vasculature from an endovascular approach began to be apparent, industry began efforts to develop tools for use in these procedures...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047144/we-de-207a-02-advances-in-cone-beam-ct-anatomical-and-functional-imaging-in-angio-suite-to-enable-one-stop-shop-stroke-imaging-workflow
#8
G Chen
: 1. Parallels in the evolution of x-ray angiographic systems and devices used for minimally invasive endovascular therapy Charles Strother - DSA, invented by Dr. Charles Mistretta at UW-Madison, was the technology which enabled the development of minimally invasive endovascular procedures. As DSA became widely available and the potential benefits for accessing the cerebral vasculature from an endovascular approach began to be apparent, industry began efforts to develop tools for use in these procedures...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046482/we-de-207a-03-recent-advances-in-devices-used-in-neuro-interventions
#9
M Gounis
: 1. Parallels in the evolution of x-ray angiographic systems and devices used for minimally invasive endovascular therapy Charles Strother - DSA, invented by Dr. Charles Mistretta at UW-Madison, was the technology which enabled the development of minimally invasive endovascular procedures. As DSA became widely available and the potential benefits for accessing the cerebral vasculature from an endovascular approach began to be apparent, industry began efforts to develop tools for use in these procedures...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28008262/kinetics-of-circulating-endothelial-progenitor-cells-in-patients-undergoing-carotid-artery-surgery
#10
Günay Kalender, Angela Kornberger, Milan Lisy, Andres Beiras-Fernandez, Ulrich A Stock
AIM: Endothelial progenitor cells (EPCs) are primitive cells found in the bone marrow and peripheral blood (PB). In particular, the potential of EPCs to differentiate into mature endothelial cells remains of high interest for clinical applications such as bio-functionalized patches for autologous seeding after implantation. The objective of this study was to determine EPCs' kinetics in patients undergoing carotid artery thromboendarterectomy (CTEA) and patch angioplasty. METHODS: Twenty CTEA patients were included (15 male, mean age 76 years)...
2016: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/27998477/advanced-portrayal-of-smil-coating-by-allying-cze-performance-with-in-capillary-topographic-and-charge-related-surface-characterization
#11
Lorenz G Stock, Michael Leitner, Lukas Traxler, Klaus Bonazza, Laurent Leclercq, Hervé Cottet, Gernot Friedbacher, Andreas Ebner, Hanno Stutz
A successive multiple ionic polymer layer (SMIL) coating composed of four layers improved the capillary electrophoretic separation of a recombinant major birch pollen allergen and closely related variants when poly(acrylamide-co-2-acrylamido-2-methyl-1-propansulfonate) (55% PAMAMPS) replaced dextran sulfate as terminal SMIL layer. 55% PAMAMPS decelerated the electroosmotic flow (EOF) due to its lower charge density. Atomic force microscopy (AFM) was used to investigate SMIL properties directly on the inner capillary surface and to relate them to EOF measurements and results of associated CZE separations of a mixture of model proteins and peptides that were performed in the same capillary...
January 25, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/27955669/simulating-future-supply-of-and-requirements-for-human-resources-for-health-in-high-income-oecd-countries
#12
Gail Tomblin Murphy, Stephen Birch, Adrian MacKenzie, Janet Rigby
BACKGROUND: As part of efforts to inform the development of a global human resources for health (HRH) strategy, a comprehensive methodology for estimating HRH supply and requirements was described in a companion paper. The purpose of this paper is to demonstrate the application of that methodology, using data publicly available online, to simulate the supply of and requirements for midwives, nurses, and physicians in the 32 high-income member countries of the Organisation for Economic Co-operation and Development (OECD) up to 2030...
December 12, 2016: Human Resources for Health
https://www.readbyqxmd.com/read/27936630/material-flow-analysis-as-a-tool-to-improve-waste-management-systems-the-case-of-austria
#13
Astrid Allesch, Paul H Brunner
This paper demonstrates the power of material flow analysis (MFA) for designing waste management (WM) systems and for supporting decisions with regards to given environmental and resource goals. Based on a comprehensive case study of a nationwide WM-system, advantages and drawbacks of a mass balance approach are discussed. Using the software STAN, a material flow system comprising all relevant inputs, stocks and outputs of wastes, products, residues, and emissions is established and quantified. Material balances on the level of goods and selected substances (C, Cd, Cr, Cu, Fe, Hg, N, Ni, P, Pb, Zn) are developed to characterize this WM-system...
January 3, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/27933303/purification-of-baculovirus-vectors-using-heparin-affinity-chromatography
#14
Md Nasimuzzaman, Danielle Lynn, Johannes Cm van der Loo, Punam Malik
Baculoviruses are commonly used for recombinant protein and vaccine production. Baculoviruses are nonpathogenic to vertebrates, have a large packaging capacity, display broad host and cell type tropism, infect both dividing and nondividing cells, and do not elicit strong immune or allergic responses in vivo. Hence, their use as gene delivery vehicles has become increasingly popular in recent years. Moreover, baculovirus vectors carrying mammalian regulatory elements can efficiently transduce and express transgenes in mammalian cells...
2016: Molecular Therapy. Methods & Clinical Development
https://www.readbyqxmd.com/read/27914203/multiple-processes-drive-genetic-structure-of-humpback-whale-megaptera-novaeangliae-populations-across-spatial-scales
#15
Francine Kershaw, Inês Carvalho, Jacqueline Loo, Cristina Pomilla, Peter B Best, Ken P Findlay, Salvatore Cerchio, Tim Collins, Marcia H Engel, Gianna Minton, Peter Ersts, Jaco Barendse, P G H Kotze, Yvette Razafindrakoto, Solange Ngouessono, Michael Meÿer, Meredith Thorton, Howard C Rosenbaum
Elucidating patterns of population structure for species with complex life histories, and disentangling the processes driving such patterns, remains a significant analytical challenge. Humpback whale (Megaptera novaeangliae) populations display complex genetic structures that have not been fully resolved at all spatial scales. We generated a data set of nuclear markers for 3575 samples spanning the seven breeding stocks and substocks found in the South Atlantic and western and northern Indian Oceans. For the total sample, and males and females separately, we assessed genetic diversity, tested for genetic differentiation between putative populations and isolation by distance, estimated the number of genetic clusters without a priori population information and estimated rates of gene flow using maximum-likelihood and Bayesian approaches...
December 3, 2016: Molecular Ecology
https://www.readbyqxmd.com/read/27902869/drivers-of-interannual-variability-in-virioplankton-abundance-at-the-coastal-western-antarctic-peninsula-and-the-potential-effects-of-climate-change
#16
Claire Evans, Joost Brandsma, David W Pond, Hugh J Venables, Michael P Meredith, Harry J Witte, Sharon Stammerjohn, William H Wilson, Andrew Clarke, Corina P D Brussaard
An eight year time-series in the Western Antarctic Peninsula (WAP) with an approximately weekly sampling frequency was used to elucidate changes in virioplankton abundance and their drivers in this climatically-sensitive region. Virioplankton abundances at the coastal WAP show a pronounced seasonal cycle with interannual variability in the timing and magnitude of the summer maxima. Bacterioplankton abundance is the most influential driving factor of the virioplankton, and exhibit closely coupled dynamics. Sea ice cover and duration predetermine levels of phytoplankton stock and thus, influence virioplankton by dictating the substrates available to the bacterioplankton...
November 30, 2016: Environmental Microbiology
https://www.readbyqxmd.com/read/27889659/a-national-riparian-restoration-programme-in-new-zealand-is-it-value-for-money
#17
Adam J Daigneault, Florian V Eppink, William G Lee
National scale initiatives are being attempted in New Zealand (NZ) to meet important environmental goals following land-use intensification over recent decades. Riparian restoration to filter agricultural spillover effects is currently the most widely practised mitigation measure but few studies have investigated the cumulative value of these practices at a national level. We use an applied economic land use model the benefits (GHG emissions, N leaching, P loss, sedimentation and biodiversity gain) and relevant costs (fencing, alternative stock water supplies, restoration planting and opportunity costs) of restoring riparian margins (5-50 m) on all streams in NZ flowing through current primary sector land...
February 1, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/27875004/grassland-management-impacts-on-soil-carbon-stocks-a-new-synthesis
#18
Richard T Conant, Carlos E P Cerri, Brooke B Osborne, Keith Paustian
Grassland ecosystems cover a large portion of the Earths' surface and contain substantial amounts of soil organic carbon. Previous work has established that these soil carbon stocks are sensitive to management and land use changes - grazing, species composition, and mineral nutrient availability can lead to losses or gains of soil carbon. Because of the large annual carbon fluxes into and out of grassland systems, there has been growing interest in how changes in management might shift the net balance of these flows - stemming losses from degrading grasslands or managing systems to increase soil carbon stocks (i...
November 22, 2016: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/27867760/pico-and-nanoplankton-abundance-and-carbon-stocks-along-the-brazilian-bight
#19
Catherine Gérikas Ribeiro, Adriana Lopes Dos Santos, Dominique Marie, Vivian Helena Pellizari, Frederico Pereira Brandini, Daniel Vaulot
Pico and nanoplankton communities from the Southwest Atlantic Ocean along the Brazilian Bight are poorly described. The hydrography in this region is dominated by a complex system of layered water masses, which includes the warm and oligotrophic Tropical Water (TW), the cold and nutrient rich South Atlantic Central Water (SACW) and the Coastal Water (CW), which have highly variable properties. In order to assess how pico- and nanoplankton communities are distributed in these different water masses, we determined by flow cytometry the abundance of heterotrophic bacteria, Prochlorococcus, Synechococcus and autotrophic pico and nanoeukaryotes along three transects, extending from 23°S to 31°S and 39°W to 49°W...
2016: PeerJ
https://www.readbyqxmd.com/read/27862532/spatio-temporal-genetic-structure-and-the-effects-of-long-term-fishing-in-two-partially-sympatric-offshore-demersal-fishes
#20
Romina Henriques, Sophie von der Heyden, Marek R Lipinski, Nina du Toit, Paulus Kainge, Paulette Bloomer, Conrad A Matthee
Environmental gradients have been shown to disrupt gene flow in marine species, yet their influence in structuring populations at depth remains poorly understood. The Cape hakes (Merluccius paradoxus and M. capensis) are demersal species co-occurring in the Benguela Current system, where decades of intense fishing resulted in severely depleted stocks in the past. Previous studies identified conflicting mtDNA genetic substructuring patterns and thus contrasting evolutionary trajectories for both species. Using 10 microsatellite loci, the control region of mtDNA and employing a seascape genetics approach, we investigated genetic connectivity and the impact of prolonged exploitation in the two species, which are characterized by different patterns of fishing pressure...
December 2016: Molecular Ecology
keyword
keyword
52972
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"