The Influence of Temperature Increase on the Toxicity of Mercury Remediated Seawater Using the NanomaterialGraphene Oxide on the Mussel Mytilus galloprovincialis

Mercury (Hg) has been increasing in waters, sediments, soils and air, as a result of natural events and anthropogenic activities. In aquatic environments, especially marine systems (estuaries and lagoons), Hg is easily bioavailable and accumulated by aquatic wildlife, namely bivalves, due to their lifestyle characteristics (sedentary and filter-feeding behavior). In recent years, different approaches have been developed with the objective of removing metal(loid)s from the water, including the employment of nanomaterials. However, coastal systems and marine organisms are not exclusively challenged by pollutants but also by climate changes such as progressive temperature increment. Therefore, the present study aimed to (i) evaluate the toxicity of remediated seawater, previously contaminated by Hg (50 mg/L) and decontaminated by the use of graphene-based nanomaterials (graphene oxide (GO) functionalized with polyethyleneimine, 10 mg/L), towards the mussel Mytilus galloprovincialis; (ii) assess the influence of temperature on the toxicity of decontaminated seawater. For this, alterations observed in mussels’ metabolic capacity, oxidative and neurotoxic status, as well as histopathological injuries in gills and digestive tubules were measured. This study demonstrated that mussels exposed to Hg contaminated seawater presented higher impacts than organisms under remediated seawater. When comparing the impacts at 21 °C (present study) and 17 °C (previously published data), organisms exposed to remediated seawater at a higher temperature presented higher injuries than organisms at 17 °C. These results indicate that predicted warming conditions may negatively affect effective remediation processes, with the increasing of temperature being responsible for changes in organisms’ sensitivity to pollutants or increasing pollutants toxicity.

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Community ecology in a warming world: The influence of temperature on interspecific interactions in marine systems

Journal of Experimental Marine Biology and Ecology ◽

10.1016/j.jembe.2011.02.029 ◽

2011 ◽

Vol 400 (1-2) ◽

pp. 218-226 ◽

Cited By ~ 244

Author(s):

Rebecca L. Kordas ◽

Christopher D.G. Harley ◽

Mary I. O'Connor

Keyword(s):

Community Ecology ◽

Interspecific Interactions ◽

Influence Of Temperature ◽

Marine Systems ◽

Influence Of Temperature On ◽

Warming World

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THE INFLUENCE OF TEMPERATURE ON THE RATE OF ACID LOSS IN McINTOSH APPLES

Canadian Journal of Plant Science ◽

10.4141/cjps60-107 ◽

1960 ◽

Vol 40 (4) ◽

pp. 736-744 ◽

Cited By ~ 1

Author(s):

P. A. Poapst ◽

W. R. Phillips

Keyword(s):

Storage Temperature ◽

Freezing Point ◽

Published Data ◽

Influence Of Temperature ◽

Influence Of Temperature On

Data are presented which suggest that the rate of loss of total titratable acids in the McIntosh apple varies exponentially with the storage temperature. This relationship may be expressed as a = D.eEΔT (D, E, are constants, T = storage temp. −28.5 F., approx. freezing point). Certain published data on Bramley's Seedling apple are examined which tend to confirm and generalize the above finding.

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Influence of temperature and rainfalls on the number of visitors in the National Park "Tara"

Glasnik Sumarskog fakulteta ◽

10.2298/gsf1512097r ◽

2015 ◽

pp. 97-120

Author(s):

Nenad Rankovic ◽

Zoran Poduska ◽

Jelena Nedeljkovic ◽

Dragan Nonic

Keyword(s):

National Parks ◽

National Park ◽

Climate Changes ◽

Forest Ecosystems ◽

Negative Influence ◽

Influence Of Temperature ◽

Exponential Regression ◽

Temperature And Precipitation ◽

Influence Of Temperature On ◽

The Impact

The paper is based on the assumption that climate changes, in addition to negatively affecting forest ecosystems, can have an impact on visiting sites in national parks intended for tourism and recreation. In order to test this assumption, data on the number and frequency of visits to the National Park ?Tara? were collected. In the research was determined a mean daily temperature and total amount of rainfalls in the days when the visit was recorded. These data were analyzed using exponential regression models. There is a positive and statistically significant influence of temperature on the number of visits to the National Park ?Tara? in certain categories. On the other hand, rainfalls have a negative influence on visits to the National Park ?Tara?. These analyses are compared with scenarios of climate changes in Serbia (A1B and A2). It was concluded that there is the influence of temperature and precipitation on the number of visitors to the National Park ?Tara?, and that one can expect changes in visits due to the impact of climate changes on temperature, rainfalls and forest ecosystems.

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Influence of Temperature, Relative Humidity and Seasonal Variability on Ambient Air Quality in a Coastal Urban Area

International Journal of Atmospheric Sciences ◽

10.1155/2013/264046 ◽

2013 ◽

Vol 2013 ◽

pp. 1-7 ◽

Cited By ~ 23

Author(s):

Ramasamy Jayamurugan ◽

B. Kumaravel ◽

S. Palanivelraja ◽

M. P. Chockalingam

Keyword(s):

Relative Humidity ◽

Monsoon Season ◽

Coastal Region ◽

Ambient Air ◽

Influence Of Temperature ◽

Post Monsoon ◽

Four Seasons ◽

Post Monsoon Season ◽

Influence Of Temperature On ◽

Higher Temperature

The concentration of air pollutants in ambient air is governed by the meteorological parameters such as atmospheric wind speed, wind direction, relative humidity, and temperature. This study analyses the influence of temperature and relative humidity on ambient SO2, NOx, RSPM, and SPM concentrations at North Chennai, a coastal city in India, during monsoon, post-monsoon, summer, and pre-monsoon seasons for 2010-11 using regression analysis. The results of the study show that both SO2 and NOx were negatively correlated in summer (r2=0.25 for SO2 and r2=0.15 for NOx) and moderately and positively correlated (r2=0.32 for SO2 and r2=0.51 for NOx) during post-monsoon season with temperature. RSPM and SPM had positive correlation with temperature in all the seasons except post-monsoon one. These findings indicate that the influence of temperature on gaseous pollutant (SO2 & NOx) is much more effective in summer than other seasons, due to higher temperature range, but in case of particulate, the correlation was found contradictory. The very weak to moderate correlations existing between the temperature and ambient pollutant concentration during all seasons indicate the influence of inconstant thermal variation in the coastal region. Statistically significant negative correlations were found between humidity and particulates (RSPM and SPM) in all the four seasons, but level of correlation was found moderate only during monsoon (r2=0.51 and r2=0.41) in comparison with other three seasons and no significant correlation was found between humidity and SO2, NOx in all the seasons. It is suggested from this study that the influence of humidity is effective on subsiding particulates in the coastal region.

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STUDIES ON AGGLUTINATION WITH THE AID OF THE CENTRIFUGE. THE INFLUENCE OF TEMPERATURE ON ABSORPTION AND FLOCCULATION

Journal of Experimental Medicine ◽

10.1084/jem.35.1.63 ◽

1922 ◽

Vol 35 (1) ◽

pp. 63-76 ◽

Cited By ~ 2

Author(s):

Frederick L. Gates

Keyword(s):

Centrifuge Method ◽

Influence Of Temperature ◽

Reaction Proceeds ◽

Influence Of Temperature On ◽

Antibody Complex ◽

Higher Temperature ◽

Time Required ◽

Increasing Temperature ◽

Antigen Antibody ◽

Short Time

The flocculation of bacteria which have absorbed specific agglutinins may be mechanically effected by means of the centrifuge, with results that coincide with those obtained by the standard method of test. Specific serological differences between meningococci, for example, may be determined by the centrifuge method. The technique is described. By the elimination of the inconstant time factor in the flocculation phase opportunity is given for a closer analysis of specific absorption, and of the influence of various conditions upon both phases of agglutination. The velocity of the absorption reaction is a function of the temperature at which it occurs, and the acceleration with increasing temperature is of the order of chemical phenomena. The absorption reaction proceeds most rapidly near the temperature of antibody destruction. The injurious effect of high temperature is revealed first in the serum; the antigen-antibody complex is not less sensitive. The flocculation phase is also promoted by higher temperature, but lags far behind absorption, and consumes most of the time required for spontaneous agglutination. The presence of an excess of antibodies greatly accelerates absorption and flocculation. The absorption reaction, under such circumstances, is ordinarily completed within a relatively short time.

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Adsorption of As (III) on Iron Coated Quartz Sand: Influence of Temperature on the Equilibrium Isotherm, Thermodynamics and Isosteric Heat of Adsorption Analysis

International Journal of Chemical Reactor Engineering ◽

10.1515/ijcre-2015-0061 ◽

2016 ◽

Vol 14 (1) ◽

pp. 289-298 ◽

Cited By ~ 2

Author(s):

Shashi Bala Gautam ◽

Siraj Alam ◽

Suantak Kamsonlian

Keyword(s):

Quartz Sand ◽

Freundlich Isotherm ◽

Isosteric Heat ◽

Heat Of Adsorption ◽

Isotherm Models ◽

Influence Of Temperature ◽

Isosteric Heat Of Adsorption ◽

Different Temperatures ◽

Influence Of Temperature On ◽

Higher Temperature

AbstractThe influence of temperature on the sorption of As(III) onto iron oxide coated quartz sand (IOCQS) was studied in the temperature range of 298–318 K. An increase in temperature was found to have positive influence on the adsorption of As(III) ions onto IOCQS surfaces because of increased diffusion of As(III) ions into the pores of IOCQS at higher temperature. The enhanced sorption at higher temperature indicated endothermic adsorption process. Equilibrium isotherms for the adsorption of As(III) on IOCQS were analyzed at different temperatures. Among the conventional isotherms, Freundlich isotherm best predicted specific uptake at different temperatures, followed by Redlich–Peterson, Langmuir and Temkin isotherm models. Various thermodynamic parameters namely heat of adsorption (∆H0), change in entropy (∆S0), and Gibbs free energy change (∆G0) were computed from the equilibrium constant (KD) values. The results indicated positive value for heat of adsorption ∆H0, a positive ∆S0 and a negative ∆G0. Finally, the isosteric heat of adsorption (ΔHst,a) values were calculated and quantitatively correlated with the fractional loading of As(III) onto IOCQS. The surface heterogeneity of adsorbents could be quantitatively described with an isosteric enthalpy function of fractional loading based on Do and Do model. The results show that the IOCQS possesses heterogeneous surface with sorption sites having different activities.

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The effect of temperature on high-resolution TEM image contrast

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100139573 ◽

1995 ◽

Vol 53 ◽

pp. 640-641

Author(s):

T. Geipel ◽

W. Mader ◽

P. Pirouz

Keyword(s):

Form Factor ◽

Inelastic Scattering ◽

Accurate Method ◽

Waller Factor ◽

Effect Of Temperature ◽

Specimen Thickness ◽

Influence Of Temperature ◽

Debye Waller Factor ◽

Influence Of Temperature On ◽

Atomic Form Factor

Temperature affects both elastic and inelastic scattering of electrons in a crystal. The Debye-Waller factor, B, describes the influence of temperature on the elastic scattering of electrons, whereas the imaginary part of the (complex) atomic form factor, fc = fr + ifi, describes the influence of temperature on the inelastic scattering of electrons (i.e. absorption). In HRTEM simulations, two possible ways to include absorption are: (i) an approximate method in which absorption is described by a phenomenological constant, μ, i.e. fi; - μfr, with the real part of the atomic form factor, fr, obtained from Hartree-Fock calculations, (ii) a more accurate method in which the absorptive components, fi of the atomic form factor are explicitly calculated. In this contribution, the inclusion of both the Debye-Waller factor and absorption on HRTEM images of a (Oll)-oriented GaAs crystal are presented (using the EMS software.Fig. 1 shows the the amplitudes and phases of the dominant 111 beams as a function of the specimen thickness, t, for the cases when μ = 0 (i.e. no absorption, solid line) and μ = 0.1 (with absorption, dashed line).

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