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  • 1
    Language: English
    In: Intensive care medicine, May 2013, Vol.39(5), pp.962
    Description: Byline: Jan Bakker (1) Author Affiliation: (1) Department of Intensive Care Adults, Erasmus MC University Medical Center, Room Hs 625, PO Box 2040, 3000 CA, Rotterdam, The Netherlands Article History: Registration Date: 18/01/2013 Received Date: 11/01/2013 Accepted Date: 18/01/2013 Online Date: 01/02/2013
    Keywords: Death ; Colonic Neoplasms -- Mortality ; Heart Arrest -- Mortality
    ISSN: 03424642
    E-ISSN: 1432-1238
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  • 2
    Language: English
    In: Science, 24 August 2012, Vol.337(6097), pp.914-915
    Description: An estimated 80% of the world's population faces a high-level water security or water-related biodiversity risk (1). The issue of water security-defined as an acceptable level of water-related risks to humans and ecosystems, coupled with the availability of water of sufficient quantity and quality to support livelihoods, national security, human health, and ecosystem services (2, 3)-is thus receiving considerable attention. To date, however, the majority of academic research on water security is relatively poorly integrated with the needs of policy-makers and practitioners; hence, substantial changes to funding, education, research frameworks, and academic incentive structures are required if researchers are to be enabled to make more substantive contributions to addressing the global water crisis.
    Keywords: Political science -- Politics -- International politics ; Biological sciences -- Ecology -- Ecosystem services ; Biological sciences -- Ecology -- Applied ecology ; Biological sciences -- Ecology -- Ecosystems ; Biological sciences -- Biology -- Environmental biology ; Environmental studies -- Environmental economics -- Ecological economics ; Environmental studies -- Atmospheric sciences -- Meteorology ; Applied sciences -- Research methods -- Research design ; Applied sciences -- Research methods -- Interdisciplinary research ; Economics -- Economic disciplines -- Financial economics
    ISSN: 00368075
    E-ISSN: 10959203
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  • 3
    Language: English
    In: Nature, Nov 22, 2012, Vol.491(7425), p.533(2)
    Keywords: Hydrogen Bonds – Properties ; Water – Structure ; Hydrophobic Effect – Methods
    ISSN: 0028-0836
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  • 4
    In: Nature, 2012, Vol.491(7425), p.533
    Keywords: Hydrophobic and Hydrophilic Interactions–Chemistry ; Water–Chemistry ; Water;
    ISSN: 0028-0836
    E-ISSN: 14764687
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  • 5
    Language: English
    In: Personality and Individual Differences, August 2012, Vol.53(3), pp.341-346
    Description: ► Examined Sensory-Processing Sensitivity (SPS) in relation to negative affect. ► Investigated the moderating effect of trait mindfulness and acceptance on SPS. ► SPS only related to anxiety when mindfulness and acceptance were low. ► Mindfulness and acceptance-based treatments may be helpful for those high on SPS. Sensory-Processing Sensitivity (SPS) refers to a trait-like difference in the extent to which individuals strongly and deeply process a variety of stimuli in the environment. While such sensitivities may be positive (i.e., greater appreciation and awareness of the environment) or negative (i.e., being overwhelmed by such stimuli), the majority of the literature to date has focused on the negative aspect of this relationship e.g., the higher propensity for depression and anxiety. Therefore, this research examined variables that may impact or moderate the relationship between SPS and distress. One prime moderator candidate is mindfulness – the ability to attend to and be accepting of present experience. In this research we aimed to investigate the relationship between SPS, mindfulness and distress using a cross-sectional methodology in a non-clinical sample. While SPS related to higher levels of depression, anxiety and stress, the results were taken to support the moderation hypothesis with respect to anxiety. In particular, SPS only related to anxiety when mindfulness and acceptance were low, but the relationships were not significant when mindfulness and acceptance were high. Theoretical and clinical implications are discussed.
    Keywords: Sensory-Processing Sensitivity ; Mindfulness ; Acceptance ; Depression ; Anxiety ; Stress ; Psychology
    ISSN: 0191-8869
    E-ISSN: 1873-3549
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  • 6
    Language: English
    In: Journal of the American Chemical Society, 11 January 2012, Vol.134(1), pp.205-7
    Description: We report here on a generic approach to read out potentiometric sensors with electrogenerated chemiluminescence (ECL). In a first example, a potassium ion-selective electrode acts as the reference electrode and is placed in contact with the sample solution. The working electrode of the three-electrode cell is responsible for ECL generation and placed in a detection solution containing tris(2,2'-bipyridyl)ruthenium(II) [Ru(bpy)(3)(2+)] and the coreactant 2-(dibutylamino)ethanol (DBAE), physically separated from the sample by a bridge. Changes in the sample potassium concentration directly modulate the potential at the working electrode, and hence the ECL output, when a constant-potential pulse is applied between the two electrodes. A linear response of the ECL intensity to the logarithmic potassium concentration between 10 μm and 10 mM was found.
    Keywords: Chemiluminescence -- Research ; Electric Potential -- Measurement ; Electrodes -- Electric Properties ; Electrodes -- Chemical Properties ; Potassium Compounds -- Chemical Properties ; Potassium Compounds -- Electric Properties;
    ISSN: 00027863
    E-ISSN: 1520-5126
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  • 7
    Language: English
    In: Journal of the American Chemical Society, 17 October 2012, Vol.134(41), pp.16929-32
    Description: We report here for the first time on a reversible photodynamic bulk optode sensor based on the photoswitching of a spiropyran derivative (Sp). The photoswitching of Sp induces a large basicity increase in the polymeric phase, which triggers the extraction of Cl(-) and H(+). Cl(-) is stabilized by a lipophilic chloride-selective ionophore inside the membrane, while H(+) binds with the open form of Sp and induces a spectral change, hence providing the sensor signal. The system was studied with spectroscopic and electrochemical methods.
    Keywords: Benzopyrans -- Chemistry ; Chlorides -- Analysis ; Indoles -- Chemistry ; Nitro Compounds -- Chemistry
    ISSN: 00027863
    E-ISSN: 1520-5126
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  • 8
    Language: English
    In: Journal of the American Chemical Society, 04 June 2014, Vol.136(22), pp.7857-60
    Description: Making efficient use of solar energy is one of the biggest challenges of our time. In nature, solar energy can be harvested by photosynthesis where proton-coupled electron transfer (PCET) plays a critical role. Here, PCET is utilized for the first time to directly convert light energy to electrical energy. Quinone/hydroquinone PCET redox couples were used to produce a photovoltage along with spiropyrans, photoswitchable compounds that undergo reversible transformation between a ring-closed (Sp) and ring-opened form (Mc). The Mc form is more basic than the Sp form, and the open-circuit voltage (V(oc)) is related to the proton concentration and that of the Sp/Mc ratio controlled by light. V(oc) values from 100 to 140 mV were produced. In addition to direct current (J(sc) ca. 9 μA cm(-2)), alternating current in the range of 0.1 to 200 Hz was also produced by manipulating the input light.
    Keywords: Electrons ; Protons
    ISSN: 00027863
    E-ISSN: 1520-5126
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  • 9
    Language: English
    In: Nature, 11/2012, Vol.491(7425), pp.533-535
    Description: In these studies, the distance between water molecules near hydrophobic solutes was found to be quite similar to that in bulk liquid water, thereby casting serious doubts on the existence of any local ice-like structures3,4. [...]theoretical studies have...
    Keywords: Hydrogen Bonds ; Protein Folding ; Entropy ; Fear & Phobias;
    ISSN: 0028-0836
    E-ISSN: 1476-4687
    Source: Nature Publishing Group (via CrossRef)
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  • 10
    Language: English
    In: Analytical chemistry, 19 August 2014, Vol.86(16), pp.8021-4
    Description: The group of Egorov has recently proposed an elegant method to determine unbiased selectivity coefficients of ion-selective electrodes (Egorov et al. Anal. Chem. 2014, 86, 3693). Once the electrode is exposed to a solution containing only interfering ions, the time-dependent experimental selectivity coefficients are plotted as a function of the inverse fourth root of time and extrapolated to zero. The principal assumption of the approach is the progression of the diffusion layer in the membrane phase with square root of time. This letter critically evaluates the usefulness of this methodology by finite element analysis. The results suggest that the improvement of observed selectivity values are highly significant for an initially uniform distribution of primary ions across the membrane, strongly supporting the methodology. When strong inward ion fluxes of primary ions are present instead, a modification of the method by extrapolation of logarithmic selectivity coefficients appears to give the best results.
    Keywords: Membranes ; Mathematical Models ; Extrapolation ; Electrodes ; Roots ; Selectivity ; Methodology ; Mathematical Analysis ; Analysis (MD) ; Chemical Analysis (Ep) ; Chemical Analysis (Ed) ; Chemical Analysis (EC);
    ISSN: 00032700
    E-ISSN: 1520-6882
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