85 research outputs found
Adenosine and dialysis hypotension
No full textIn this issue, Imai et al. report the results of a double-blind placebo-controlled study on the effect of an adenosine A1 receptor antagonist, FK352, on the incidence of dialysis hypotension in hypotension-prone patients. This Commentary discusses the use of selective adenosine A1 receptor antagonists for the prevention of dialysis hypotension from the perspective of the potential role of adenosine in its pathogenesis
On perfect Nikishin systems
No full text12 pages, no figures.-- MSC1991 code: Primary 42C05.-- Publisher's full-text version available Open Access at: http://www.heldermann-verlag.de/cmf/cmf02/cmf0224.pdfMR#: MR2038130 (2005c:42026)Zbl#: Zbl 1065.42020We prove perfectness for Nikishin systems made up of three functions and apply this to the convergence of the associated Hermite-Padé approximant.The work of both authors was partially supported by Dirección General de Enseñanza Superior under grant BFM2000-0206-C04-01 and the second author by grants PRAXIS XXI BCC-22201/99 and INTAS 00-272.Publicad
Collaborative working in highways major maintenance projects
No full textOver the last decade, there has been a growing emphasis on collaborations and partnering in the construction industry. This has been embraced in the UK highways maintenance sector, with partnering promoted by the client, leading to the formation of alliances and partnering frameworks. One of these is the construction management framework (CMF), the preferred method of procurement for major maintenance projects in the Highways Agency’s areas 9 and 10. This paper compares two road and structure renewals schemes carried out using the CMF. The first scheme was carried out in 2004 as one of the first of its type to be undertaken by the CMF; the second was a similar project carried out in 2006. Documentation of the two projects was reviewed to identify the benefits that were gained through working in collaboration, and if there was an improvement in performance as the framework became more established. The research considered key performance indicators, including cost and time predictability measures, respect for people surveys, innovations and lessons learned discussed at the time of the projects, and instructions for changes to works information. Data collected from both schemes show improvements in measurement and culture fostered by the CMF, and the advantages of the processes used are illustrated
Analytical core mass function (CMF) from filaments: Under which circumstances can filament fragmentation reproduce the CMF?
No full textThis is the author accepted manuscript. The final version is available from the publisher via the DOI in this recordObservations suggest that star formation in filamentary molecular clouds occurs in a two-step process, with the formation of filaments preceding that of prestellar cores and stars. Here, we apply the gravo-turbulent fragmentation theory of Hennebelle & Chabrier 08, 09, 13 to a filamentary environment, taking into account magnetic support. We discuss the induced geometrical effect on the cores, with a transition from 3D geometry at small scales to 1D at large ones. The model predicts the fragmentation behavior of a filament for a given mass per unit length (MpL) and level of magnetization. This CMF for individual filaments is then convolved with the distribution of filaments to obtain the final system CMF. The model yields two major results: (i) the filamentary geometry naturally induces a hierarchical fragmentation process, first into groups of cores, separated by a length equal to a few filament Jeans lengths, i.e. a few times the filament width. These groups then fragment into individual cores. (ii) Non-magnetized filaments with high MpL are found to fragment excessively, at odd with observations. This is resolved by taking into account the magnetic field treated simply as additional pressure support). The present theory suggests two complementary modes of star formation: while small (spherical or filamentary) structures will collapse directly into prestellar cores, according to the standard Hennebelle-Chabrier theory, the large (filamentary) ones, the dominant population according to observations, will follow the afore-described two-step process.This research has received funding from the European
Research Council under the European Community’s Seventh
Framework Programme (FP7/2007-2013 Grant Agreement
No. 306483)
CMF E1
No full textThe fables in this little volume from Aesop include "The Eagle and the Turtle"; "The Fox, the Dog, and the Lamb"; "The Fat and Skinny Chickens"; DS; TH; DM; FC; and "The Man and the Lion." Botia signs the cover with a dramatic view of the fox (or wolf?) and the rooster. Which fable is that mean to refer to? Colorful illustrations typically present the characters but may not help focus the story's specific action. Why does the DM not have the dog in the manger? The fable about the fat and skinny chickens comes clear on the day that the cook needs to prepare a meal. The fat chickens have been mocking the skinny ones. Now they receive their comeuppance. I am delighted to be filling out this collection of "mis fábulas."Language note: SpanishNo Autho
CMF E2
No full textThere are several surprises among the "Aesopic" fables in this little volume. Those from Aesop include BC; "The Fox and the Eagle"; WC; "The Angler and the Little Fish"; and "The Dog Invited to a Banquet." The second fable here is "The Blind and the Lame." Is that not from Florian? The fourth is "El abogado y las peras." Its focus seems to be on enjoying and using what one has when one has it. I cannot recall finding it among Aesopic fables. The fifth fable features a donkey and an ox. I remember it from "Thousand and One Nights," where the donkey's advice backfires and causes him to have to work. Colorful illustrations typically present the characters but may not help focus the story's specific action. One helpful illustration shows the blind and lame men facing a river which they presumably need to cross. The wrap-around cover presents a girl interacting with a fox while a mouse looks on. The "Esopo" is formed by the smoke coming out of a chimney.Language note: SpanishNo Autho
Decentralized sewage treatment by ceramic Microfiltration: A study in the RINEW project concept
No full textThe increase in greenhouse gas emissions change the precipitation behaviour causing either extreme wet- or dry weather. This impacts the fresh water supply for clean water production. Evides B.V., one of the Dutch water companies, anticipates to these changes with the sewer mining concept called ‘RINEW’ (Rotterdam Innovative Nutrients and Energy Watermanagement). RINEW studies various ways to recover valuable substances in direct decentralized sewage treatment. The treatment scheme involves the pre-treatment microscreen, coagulation and ceramic Microfiltration (cMF) for the water purification step Reverse Osmosis (RO). Since the application of cMF for sewage treatment is a novel concept, the objective of present thesis is to gain insight into technical aspects of cMF (a cMF fouling indicator and effect of oxygen on RO biofouling) and potential financial feasibility of the RINEW concept in the Netherlands. To study the potential of a fouling indicator for the cMF, irreversible fouling rates and feed water quality results are obtained over a two month period. The feed water quality is digitally monitored and characterized on COD, NTU and EC. The parameter ‘COD’ (chemical oxygen demand) is considered the most suitable as fouling indicator due to the relative large particle size of organic matter and sticky properties of biopolymers. Relating the fouling rates to the feed water quality results in a linear trend where higher irreversible fouling rates occur at higher COD concentrations. Yet, the trend result is scattered significantly since the operational flux was highly instable over time. The feed pump is originally designed for a Nanofiltration (NF) application which may explain the deviant cMF operation.The effect of oxygen in cMF permeate is studied on the (bio)fouling development on spiral wound Reverse Osmosis (RO). The study is done in duplicate each time using two parallel Membrane Fouling Simulator (MFS) which are fed by cMF permeate. In one MFS setup the water is depleted from oxygen by adding Sodium Bisulfite (NaHSO3). The pressure drop results in the MFS fed by aerobic water indicate a significant unstable fouling rate. The fouling rates obtained from the MFS fed by oxygen depleted water compare to similar studies done with NF permeate and tap water. This suggest a significant stable RO biofouling can be obtained if Sodium Bisulfite treatment is applied to RO feed water.The potential financial feasibility is studied via a concept study. Concept 1 is the RINEW concept providing high quality water (e.g. demi water) to an industry. Since it is a sewer mining concept the water transport costs are neglected. In concept 2 an equal high quality water flow is produced from secondary effluent by a MF/UF+RO combination at a central Sewage Treatment Plant (SWTP). The water transport from the central SWTP to the industry is taken into account in concept 2. The difference in specific costs [EURm-3] between the two concepts is estimated which is recalculated into a breakeven the high quality water transport distance of approximately 20 km. In other words, if an industry demands high quality water and sewage is the only water source, concept 2 is more financial feasible within a range of 20 km from a SWTP. In relation to the Netherlands the SWTP density is discussed as too high for the RINEW concept to be financial feasible. Similar realized treatment plants in the Netherlands show higher importance to aspects like water source, current expertise and existing facilities in the decision-making of treatment plant.RINE
Supplementary information files for "Cross‐sectional associations between exposure to commercial milk formula marketing, beliefs about its use, and socioeconomic position among pregnant women and mothers in the UK"
No full textSupplementary files for article "Cross‐sectional associations between exposure to commercial milk formula marketing, beliefs about Its use, and socioeconomic position among pregnant women and mothers in the UK"International provisions are in place to restrict marketing practices that idealise the use of commercial milk formula (CMF) and discourage breastfeeding. In high‐income countries, women of lower socioeconomic position (SEP) are less likely to breastfeed. This study aimed to characterise the nature of exposure to CMF marketing in the UK, the extent to which women hold positive beliefs about CMF and examine the relationship between exposure to CMF marketing, holding positive beliefs about CMF and SEP. Data on these topics were collected for 1052 pregnant women and mothers of children under 18 months of age between February 2020 and February 2021. Participants were assigned a ‘CMF marketing score’ according to the number of locations where they recalled seeing advertisements, engaging with companies or receiving promotional activity. The extent to which women held positive beliefs about CMF (‘CMF positivity score’) was determined by level of agreement with 17 statements. Principal component analysis, analyses of covariance and regression analyses were applied. Every woman reported exposure to CMF marketing from multiple channels. CMF marketing score did not vary across SEP groups (p = 0.342). Women of lower and middle SEP held stronger CMF positive beliefs than women of higher SEP, including ‘Breastfeeding and formula feeding provide a baby with the same health benefits’ (p ©The Author(s), CC BY 4.0</p
Hydrothermal assembly of various dimensional pure-inorganic copper-molybdenum frameworks
No full textVarious dimensional frameworks, CMF-1 to CMF-3, were synthesized by using catalytically active [Mo7O24](6-) clusters and Cu tetrahedra. After thorough studies, the relationships between synthesis conditions and products were obtained and shown in composition diagrams. Besides, CMF-1 to CMF-3 all showed excellent catalytic activities in the degradation of methylene blue.National Basic Research Program; National Natural Science Foundation of China [21471009, 91222107, 21321001, 2013CB933402]SCI(E)[email protected]; [email protected]
A novel Laccase biosensor based on laccase immobilized graphene-cellulose microfiber composite modified screen-printed carbon electrode for sensitive determination of catechol
No full text© The Author(s) 2017. In the present work, we demonstrate the fabrication of laccase biosensor to detect the catechol (CC) using laccase immobilized on graphene-cellulose microfibers (GR-CMF) composite modified screen printed carbon electrode (SPCE). The direct electrochemical behavior of laccase was investigated using laccase immobilized different modified SPCEs, such as GR/SPCE, CMF/SPCE and GR-CMF/SPCE. Compared with laccase immobilized GR and CMF modified SPCEs, a well-defined redox couple of CuI/CuIIfor laccase was observed at laccase immobilized GR-CMF composite modified SPCE. Cyclic voltammetry results show that the as-prepared biosensor has 7 folds higher catalytic activity with lower oxidation potential towards CC than SPCE modified with GR-CMF composite. Under optimized conditions, amperometric i-t method was used for the quantification of CC, and the amperometric response of the biosensor was linear over the concertation of CC ranging from 0.2 to 209.7 μM. The sensitivity, response time and the detection limit of the biosensor for CC is 0.932 μMμA-1 cm-2, 2 s and 0.085 μM, respectively. The biosensor has high selectivity towards CC in the presence of potentially active biomolecules and phenolic compounds. The biosensor also accessed for the detection of CC in different water samples and shows good practicality with an appropriate repea
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