PubMed Journals Articles About "Global Cross Flow Membrane Market Research Report Forecast" RSS

00:42 EST 17th January 2019 | BioPortfolio

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Showing "Global Cross Flow Membrane Market Research Report Forecast" PubMed Articles 1–25 of 48,000+

Treatment of cheese whey by a cross-flow anaerobic membrane bioreactor: Biological and filtration performance.

Whey, produced in large quantities during cheese production, is a rapidly fermentable high strength wastewater characterized by a high biodegradability and low alkalinity. In this study, a lab-scale cross-flow anaerobic membrane bioreactor was used to address the commonly experienced difficulties such as unstable reactor performance and unexpected biomass losses when treating whey wastewater with conventional anaerobic reactors. The anaerobic membrane bioreactor provided a stable treatment performance, i.e....

Application of membrane distillation for the treatment of anaerobic membrane bioreactor effluent: An especial attention to the operating conditions.

This study was carried out by applying the direct contact membrane distillation (DCMD) into the treatment of effluent from anaerobic membrane bioreactor. The treatment efficiency of DCMD was highly emphasized, which was expected to be improved through the optimization of operating conditions. Three operating conditions, including temperature difference, cross-flow velocity and membrane pore size, were considered. The relative flux (the ratio of actual flux to initial flux) increased from 0.50 to 0.98 as the...

Flow Topology Transition via Global Bifurcation in Thermally Driven Turbulence.

We report an experimental observation of a flow topology transition via global bifurcation in a turbulent Rayleigh-Bénard convection. This transition corresponds to a spontaneous symmetry breaking with the flow becomes more turbulent. Simultaneous measurements of the large-scale flow (LSF) structure and the heat transport show that the LSF bifurcates from a high heat transport efficiency quadrupole state to a less symmetric dipole state with a lower heat transport efficiency. In the transition zone, the sy...

The mathematics of market timing.

Market timing is an investment technique that tries to continuously switch investment into assets forecast to have better returns. What is the likelihood of having a successful market timing strategy? With an emphasis on modeling simplicity, I calculate the feasible set of market timing portfolios using index mutual fund data for perfectly timed (by hindsight) all or nothing quarterly switching between two asset classes, US stocks and bonds over the time period 1993-2017. The historical optimal timing path ...

Optimization of radioactive sources to achieve the highest precision in three-phase flow meters using Jaya algorithm.

Gamma ray source has very important role in precision of multi-phase flow metering. In this study, different combination of gamma ray sources ((Ba-Cs), (Ba-Co), (Am-Cs), (Am-Co), (Ba-Am) and (Co-Cs)) were investigated in order to optimize the three-phase flow meter. Three phases were water, oil and gas and the regime was considered annular. The required data was numerically generated using MCNP-X code which is a Monte-Carlo code. Indeed, the present study devotes to forecast the volume fractions in the annu...

Analysis of global stock index data during crisis period via complex network approach.

Considerable research has been done on the complex stock market, however, there is very little systematic work on the impact of crisis on global stock markets. For filling in these gaps, we propose a complex network method, which analyzes the effects of the 2008 global financial crisis on global main stock index from 2005 to 2010. Firstly, we construct three weighted networks. The physics-derived technique of minimum spanning tree is utilized to investigate the networks of three stages. Regional clustering ...

Four release tests exhibit variable silver stability from nanoparticle-modified reverse osmosis membranes.

Modification of polyamide reverse osmosis (RO) membranes with silver nanoparticles (AgNP) may effectively control biofouling. While silver leaching tests are usually performed during membrane development, the lack of common testing protocols limits cross-comparison among different labs. We compare four release tests to quantify the release of dissolved and nanoparticulate silver from polyamide RO membranes prepared through in situ surface functionalization: (1) batch immersion, (2) dead-end filtration, (3) ...

Numerical analysis of flow distribution behavior in a proton exchange membrane fuel cell.

The flow distribution of a proton exchange membrane fuel cell within a manifold plays an important role on its performance. This study presents a numerical analysis of the flow distribution behavior within different manifold configurations. A two-dimensional model with 75 cells was employed to study the flow behavior. The variation in the stoichiometry and number of cells was also studied. Three different flow configurations were considered with different numbers of flow inlets and outlets. The flow charact...

Computational fluid dynamic (CFD) modeling of alternating tangential flow (ATF) filtration for perfusion cell culture.

Alternating tangential flow (ATF) filtration has been successfully adopted as a low shear cell separation device in many perfusion-based processes. The reverse flow per cycle is used to minimize fouling compared to tangential flow filtration (TFF). Currently, modeling of the ATF system is based on empirically derived formulas, leading to oversimplification of model parameters. In this study, an experimentally validated porous CFD model was used to predict localized fluid behavior and pressure profiles in th...

Global Access to Essential Medicines for Childhood Cancer: A Cross-Sectional Survey.

Global data mapping access to essential chemotherapeutics for pediatric cancer are scarce. We report a survey of international pediatric cancer care providers' access to these medicines.

Cross-Linked Sulfonated Poly(arylene ether sulfone) Containing a Flexible and Hydrophobic Bishydroxy Perfluoropolyether Cross-Linker for High-Performance Proton Exchange Membrane.

Here we show a simple and effective cross-linking method to prepare high performance cross-linked sulfonated poly(arylene ether sulfone) (C-SPAES) membrane using bishydroxy perfluoropolyether (PFPE) as a cross-linker for fuel cell applications. C-SPAES membrane shows much improved physicochemical stability due to the cross-linked structure and reasonably high proton conductivity than non-crosslinked SPAES membrane due to the incorporation of flexible PFPE and the effective phase-separated morphology between...

The Diagnostic Performance of Urine Flow Cytometer UF1000i for Urinary Tract Infections.

Urinary tract infections (UTIs) are one of the most common infectious diseases in clinic. Urine flow cytometry is receiving more and more attention due to its rapid forecast of UTIs.

Digestion performance and contributions of organic and inorganic fouling in an anaerobic membrane bioreactor treating waste activated sludge.

This study evaluates the performance of an anaerobic membrane bioreactor (AnMBR) digesting waste activated sludge. A digestion reactor equipped with an external hollow fiber microfiltration membrane module was operated in continuous-mode for 248 days. The system demonstrated 56% volatile solids degradation at an organic loading rate of 0.40 g-VS/(L·d) in 15 days of hydraulic retention time. The average methane content in the biogas produced was 76% which is considerably high compared to that from a t...

Dendrite Suppression Membranes for Rechargeable Zinc Batteries.

Aqueous batteries with zinc metal anodes are promising alternatives to Li-ion batteries for grid storage because of their abundance and benefits in cost, safety and nontoxicity. However, short cyclability due to zinc dendrite growth remains a major obstacle. Here, we report a cross-linked polyacrylonitrile (PAN) based cation exchange membrane that is low-cost and mechanically robust. Li2S3 reacts with PAN, simultaneously leading to cross-linking and formation of sulfur containing functional groups. Hydrolys...

Intermolecular interactions of polysaccharides in membrane fouling during microfiltration.

Membrane technology has been widely employed for seawater desalination, water and wastewater reclamation, while membrane fouling still remains as a major challenge. The polysaccharides in extracellular polymeric substances (EPS) have been recognized as an important foulant that causes serious membrane fouling, while the detailed structure of polysaccharides and the intermolecular interactions between them have not been adequately disclosed. In this study, two different polysaccharides and their mixtures wer...

Quantification of blood flow in the superior ophthalmic vein using phase contrast magnetic resonance imaging.

Phase contrast magnetic resonance imaging (PC MRI), a validated, non-invasive technique for measuring intracranial blood and cerebrospinal flows, has been recently applied to studies of blood flow of the ophthalmic artery (OA). This study evaluated PC-MRI's ability to quantify blood flow in the superior ophthalmic vein (SOV). We analyzed with 3 T PC MRI the blood flow in the SOV in 11 healthy subjects and, for comparison purpose, in the OA. Segmentation software was used to analyze the PC images and qua...

Cross-subtype Detection of HIV-1 capsid p24 antigen using a Sensitive Europium Nanoparticle Assay.

Accurate and early detection of diverse HIV-1 subtypes using currently available assays has been a major challenge. We report development of a sensitive Time Resolved Fluorescence (TRF) Europium Nanoparticle Immuno Assay (ENIA) for cross subtype detection of p24 antigen using broadly cross reactive antibodies.

Growing research in global surgery with an eye towards equity.

Global surgery research is often generated through collaborative partnerships between researchers from both low- and middle-income countries (LMICs) and high-income countries (HICs). Inequitable engagement of LMIC collaborators can limit the impact of the research.

Plant lipids: Key players of plasma membrane organization and function.

The plasma membrane (PM) is the biological membrane that separates the interior of all cells from the outside. The PM is constituted of a huge diversity of proteins and lipids. In this review, we will update the diversity of molecular species of lipids found in plant PM. We will further discuss how lipids govern global properties of the plant PM, explaining that plant lipids are unevenly distributed and are able to organize PM in domains. From that observation, it emerges a complex picture showing a spatial...

Building a Global Culture of Science - The Vietnam Experience.

We detail the lessons learned, challenges, achievements, and outlook in building a chemistry research center in Vietnam. Through the principles of 'global science', we provide specific insight into the process behind establishing an internationally-competitive research program - a model that is scalable and adaptable to countries beyond Vietnam. Furthermore, we highlight the prospects for success in advancing global science education, research capacity building, and mentorship.

The struggle for existence in the world market ecosystem.

The global trade system can be viewed as a dynamic ecosystem in which exporters struggle for resources: the markets in which they export. We can think that the aim of an exporter is to gain the entirety of a market share (say, car imports from the United States). This is similar to the objective of an organism in its attempt to monopolize a given subset of resources in an ecosystem. In this paper, we adopt a multilayer network approach to describe this struggle. We use longitudinal, multiplex data on trade ...

The social issue in the BRICS Project.

BRICS, the acronym for Brazil, Russia, India, China and South Africa, is the first multilateral group created and run by non-western developed countries. The group aims to influence world geopolitics and market based on the right of developing and emerging countries to participate equitably in development. The social issue lies at the core of the group's justifications to achieve its goals. In this regard, this paper aims to analyze how the social issue has been addressed by BRICS. The methodology was based...

Effects of market type and time of purchase on oxidative status and descriptive off-odors and off-flavors of beef in Vietnam.

The objective of the current study was to determine the effects of market type (super market - SM, indoor market - IM, open market - OM) and sampling time (at the opening - T0 and 4 h after the opening - T4) on antioxidant capacity, lipid oxidation, and descriptive sensory attributes of beef in Vietnam. Values of FC and TEAC were greater in OM beef than IM and SM (P 

Bibliometric analysis of global publications in medication adherence (1900-2017).

Medication non-adherence is a worldwide problem. The aim of this study was to assess the global research output, research trends and topics that shaped medication adherence research.

Global Palliative Care and Cross-National Comparison: How Is Palliative Care Development Assessed?

Indicators assessing national-level palliative care (PC) development used for cross-national comparison depict progress on this field. There is current interest on its inclusion in global monitoring frameworks.

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