A potential theoretic minimax problem on the torus

We investigate an extension of an equilibrium-type result, conjectured by Ambrus, Ball and Erd\'elyi, and proved recently by Hardin, Kendall and Saff. These results were formulated on the torus, hence we also work on the torus, but one of the main motivations for our extension comes from an analogous setup on the unit interval, investigated earlier by Fenton. Basically, the problem is a minimax one, i.e. to minimize the maximum of a function $F$, defined as the sum of arbitrary translates of certain fixed "kernel functions", minimization understood with respect to the translates. If these kernels are assumed to be concave, having certain singularities or cusps at zero, then translates by $y_j$ will have singularities at $y_j$ (while in between these nodes the sum function still behaves realtively regularly). So one can consider the maxima $m_i$ on each subintervals between the nodes $y_j$, and look for the minimization of $\max F = \max_i m_i$. Here also a dual question of maximization of $\min_i m_i$ arises. This type of minimax problems were treated under some additional assumptions on the kernels. Also the problem is normalized so that $y_0=0$. In particular, Hardin, Kendall and Saff assumed that we have one single kernel $K$ on the torus or circle, and $F=\sum_{j=0}^n K(\cdot-y_j)= K + \sum_{j=1}^n K(\cdot-y_j)$. Fenton considered situations on the interval with two fixed kernels $J$ and $K$, also satisfying additional assumptions, and $F= J + \sum_{j=1}^n K(\cdot-y_j)$. Here we consider the situation (on the circle) when \emph{all the kernel functions can be different}, and $F=\sum_{j=0}^n K_j(\cdot- y_j) = K_0 + \sum_{j=1}^n K_j(\cdot-y_j)$. Also an emphasis is put on relaxing all other technical assumptions and give alternative, rather minimal variants of the set of conditions on the kernel

A Study of the Phylogeny of the Anteoninae

A study of the biology of insect parasites and their relationships with that of their hosts offers a most attractive and productive field for research, and as yet, comparatively speaking, but little has been done in this field. This is particularly true with the Hymenoptera, and the writer has been interested in working out the biology of the Anteoninae, one of the parasitic groups of this order. These insects are parasitic on three families of the Homoptera, namely, the Cicadellidae, and Fulgoridae, commonly known as leafhoppers, and the Membracidae or treehoppers

Composites of MWCNTS and metal oxides(hydroxides) prepared via fenton reaction and their applications in LIBS and OER

With the rapid development of society, the soaring consumption on fossil energy and the heavy environmental deterioration, looking for sustainable and clean energy such as solar, wind, hydrogen, has become the top priority for improving the environment pollution and accelerating the economic growth. However, the time and region limitation unable to meet the regional demand of energy, therefore, the research of effective energy storage and conversion (EESC) devices has become the research priorities. Lithium ion batteries (LIBs) as one of the EESC devices have been studied by many research groups. Oxygen evolution reaction (OER), as the anode reaction in water splitting and positive electrode charging reaction in metal-air batteries, plays a crucial role in the field of EESC. Composites of carbon material and metal oxide (or hydroxide) with their intrinsic properties can be used in the above two field as an anode or an electrocatalyst, respectively. But the common preparation method published in most articles for this type of composites usually contains two steps: first, the carbon materials should be oxidized to introduce oxygen functional groups to react with metal ions, then followed with hydrothermal reaction to make sure the reaction happened between oxidized carbon material and metal ions and finally to generate the composites of carbon materials and metal oxides. Herein, Fenton reaction with Fenton reagents (Fe2+-H2O2) was used to synthesize composites of carbon material and metal oxides (or hydroxides). Because carbon material could be firstly oxidized by Fenton reagents and secondly Fe3+ in Fenton reagents can be used as iron sources. Hence, in this work, composites of Fe(OH)3 and expandable graphite nanosheets (Fe(OH)3/EG), Fe(OH) 3 and multi-walled carbon nanotubes (Fe(OH)3/MWCNTs), Fe2O3/MWCNTs, NiFe layered double hydroxides and MWCNTs (NiFe LDHs/MWCNTs) were prepared by Fenton reaction with sonication assistance. and Fe2O3/MWCNTs used as anode material in LIBs and NiFe LDHs/MWCNTs used as electrocatalyst for OER were investigated, respectively. influence on particle size and crystal structure of metal hydroxide in the process of crystallization, hydrothermal treatment was applied after Fenton reaction which was named as EG-F-H and MWCNTs-F-H, respectively. However, the results show that MWCNTs-F without hydrothermal reaction has higher capacities than that of MWCNTs-F-H. Because the particle size of metal hydroxide on MWCNTs-F surface is smaller than that of MWCNTs-F-H, and part of metal hydroxide particles located on the surface of MWCNTs-F could drop down to the solution during the hydrothermal reaction. And EG-F also show a higher capacity than that of EG-F-H. In the Fenton reaction process, sonication was used to enhance the reaction. Hence, the optimized sonication time was also selected according to the properties of composites and the optimized sonication time is 3h. Composite of Fe2O3/MWCNTs was prepared by Fenton reaction with a heat treatment (200℃) to ensure that Fe(OH)3 was transferred to Fe2O3. It was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FT-IR) etc. The XRD and Selected area electron diffraction (SAED) display that Fe2O3 in the composite has an amorphous structure, and SEM shows Fe2O3 nanoparticles load on MWCNTs surface. This indicates that MWCNTs was oxidized by Fenton reagents and introduced oxygen functional groups with negative charge. The electrostatic interaction between MWCNTs and iron ions with positive charge finally promote the production of composite of Fe2O3/MWCNTs. The electrochemical measurement for composite used as an anode in LIBs shows that the composite of Fe2O3/MWCNTs exhibits an excellent cycle performance with a reversible capacity of 900 mAh/g at 500 mA/g after 500 cycles and a high rate capability of 785 mAh/g at a high current density of 2 A/g. It is ascribed that the random ordered amorphous structure of Fe2O3 decreases the ion pathway and increase the diffusion of Li ions. The MWCNTs substrate provides an electronic path way and promotes the charge transportation and enhances the rate capability. Herein, NiFe LDHs/MWCNTs as an electrocatalyst used as a type of EESC was also synthesized by obtained by Fenton reaction followed with a coprecipitation process. Ni ions was simply added into the suspension of MWCNTs after the process of Fenton reaction under pH=9-10, NiFe LDHs/MWCNTs was obtained. XRD and SAED images indicate that the composites have low crystalline structure because the temperature and pressure used in this reaction is room temperature and atmospheric pressure with short reaction time. Linear sweep voltammetry (LSV), Chronopotentiometry (CP) and multi-CP were used to test their electrocatalytic properties. The results show that F(3-1)3 (named based on total ration and molar ratio between Ni: Fe explained in experimental part) displays excellent electrocatalytic properties with small overpotential of 212 mV and 283 mV at 10 mA/cm2 and 100 mA/cm2, respectively, and a few Tafel slope of 64.46 mV/dec. The outstanding electrocatalytic performance is traced to the low crystal structure of NiFe LDHs nanoparticles which could expose more active sites and facilitate the reaction between electrode and electrolyte. MWCNTs is also responsible for the excellent electrocatalytic properties, because MWCNTs enhance the conductivity of composites and improve the kinetic of OER

Competing mechanisms of stress-assisted diffusivity and stretch-activated currents in cardiac electromechanics

We numerically investigate the role of mechanical stress in modifying the conductivity properties of the cardiac tissue and its impact in computational models for cardiac electromechanics. We follow a theoretical framework recently proposed in [Cherubini, Filippi, Gizzi, Ruiz-Baier, JTB 2017], in the context of general reaction-diffusion-mechanics systems using multiphysics continuum mechanics and finite elasticity. In the present study, the adapted models are compared against preliminary experimental data of pig right ventricle fluorescence optical mapping. These data contribute to the characterization of the observed inhomogeneity and anisotropy properties that result from mechanical deformation. Our novel approach simultaneously incorporates two mechanisms for mechano-electric feedback (MEF): stretch-activated currents (SAC) and stress-assisted diffusion (SAD); and we also identify their influence into the nonlinear spatiotemporal dynamics. It is found that i) only specific combinations of the two MEF effects allow proper conduction velocity measurement; ii) expected heterogeneities and anisotropies are obtained via the novel stress-assisted diffusion mechanisms; iii) spiral wave meandering and drifting is highly mediated by the applied mechanical loading. We provide an analysis of the intrinsic structure of the nonlinear coupling using computational tests, conducted using a finite element method. In particular, we compare static and dynamic deformation regimes in the onset of cardiac arrhythmias and address other potential biomedical applications

Reentry produced by small-scale heterogeneities in a discrete model of cardiac tissue

Reentries are reexcitations of cardiac tissue after the passing of an excitation wave which can cause dangerous arrhythmias like tachycardia or life-threatening heart failures like fibrillation. The heart is formed by a network of cells connected by gap junctions. Under ischemic conditions some of the cells lose their connections, because gap junctions are blocked and the excitability is decreased. We model a circular region of the tissue where a fraction of connections among individual cells are removed and substituted by non-conducting material in a twodimensional (2D) discrete model of a heterogeneous excitable medium with local kinetics based on electrophysiology. Thus, two neighbouring cells are connected (disconnected) with a probability f (1 - f). Such a region is assumed to be surrounded by homogeneous tissue. The circular heterogeneous area is shown to act as a source of new waves which reenter into the tissue and reexcitate the whole domain. We employ the Fenton-Karma equations to model the action potential for the local kinetics of the discrete nodes to study the statistics of the reentries in two dimensional networks with different topologies. We conclude that the probability of reentry is determined by the proximity of the fraction of disrupted connections between neighboring nodes (Peer ReviewedPostprint (published version

Bimetallic iron-copper oxide nanoparticles supported on nanometric diamond as efficient and stable sunlight-assisted Fenton photocatalyst

[EN] Bimetallic iron and copper oxide nanoparticles (NPs) supported on hydroxylated diamond (D3) exhibits an improved activity for the heterogeneous Fenton phenol degradation under natural or simulated sunlight irradiation with respect to analogous monometallic samples or than analogous FeCu NPs on graphite, activated carbon and P25 TiO2 semiconductor. FeCu/D3 catalyst exhibits good recyclability and stability especially working at pH 6. Overall, the high activity of the Fe20Cu80(0.2 wt%)/D3 catalyst is mainly due to the combination of the high activity of reduced copper species decomposing H2O2 to HO center dot radical, while Fe2+ allows the regeneration of these reduced copper species.S.N. thanks financial support by the Fundacion Ramon Areces (XVIII Concurso Nacional para la Adjudicacion de Ayudas a la Investigacion en Ciencias de la Vida y de la Materia, 2016), Ministerio de Ciencia, Innovacion y Universidades RTI2018-099482-A-I00 project and Generalitat Valenciana grupos de investigacion consolidables 2019 (ref: AICO/2019/214) project. H.G. thanks financial support by the Spanish Ministry of Science and Innovation (Severo Ochoa SEV2016 and RTI2018-890237-CO2-1) and Generalitat Valenciana (Prometeo 2017/083) is also gratefully acknowledged.Manickam-Periyaraman, P.; Espinosa, JC.; Ferrer Ribera, RB.; Subramanian, S.; Alvaro Rodríguez, MM.; García Gómez, H.; Navalón Oltra, S. (2020). Bimetallic iron-copper oxide nanoparticles supported on nanometric diamond as efficient and stable sunlight-assisted Fenton photocatalyst. Chemical Engineering Journal. 393:1-11. https://doi.org/10.1016/j.cej.2020.124770S111393Malato, S., Fernández-Ibáñez, P., Maldonado, M. I., Blanco, J., & Gernjak, W. (2009). Decontamination and disinfection of water by solar photocatalysis: Recent overview and trends. Catalysis Today, 147(1), 1-59. doi:10.1016/j.cattod.2009.06.018Pera-Titus, M., Garcı́a-Molina, V., Baños, M. A., Giménez, J., & Esplugas, S. (2004). Degradation of chlorophenols by means of advanced oxidation processes: a general review. Applied Catalysis B: Environmental, 47(4), 219-256. doi:10.1016/j.apcatb.2003.09.010Pignatello, J. J., Oliveros, E., & MacKay, A. (2006). Advanced Oxidation Processes for Organic Contaminant Destruction Based on the Fenton Reaction and Related Chemistry. Critical Reviews in Environmental Science and Technology, 36(1), 1-84. doi:10.1080/10643380500326564Rahim Pouran, S., Abdul Aziz, A. R., & Wan Daud, W. M. A. (2015). Review on the main advances in photo-Fenton oxidation system for recalcitrant wastewaters. Journal of Industrial and Engineering Chemistry, 21, 53-69. doi:10.1016/j.jiec.2014.05.005Cheng, M., Zeng, G., Huang, D., Lai, C., Xu, P., Zhang, C., & Liu, Y. (2016). Hydroxyl radicals based advanced oxidation processes (AOPs) for remediation of soils contaminated with organic compounds: A review. Chemical Engineering Journal, 284, 582-598. doi:10.1016/j.cej.2015.09.001Garrido-Ramírez, E. G., Theng, B. K. ., & Mora, M. L. (2010). Clays and oxide minerals as catalysts and nanocatalysts in Fenton-like reactions — A review. Applied Clay Science, 47(3-4), 182-192. doi:10.1016/j.clay.2009.11.044Klavarioti, M., Mantzavinos, D., & Kassinos, D. (2009). Removal of residual pharmaceuticals from aqueous systems by advanced oxidation processes. Environment International, 35(2), 402-417. doi:10.1016/j.envint.2008.07.009Bokare, A. D., & Choi, W. (2014). Review of iron-free Fenton-like systems for activating H2O2 in advanced oxidation processes. Journal of Hazardous Materials, 275, 121-135. doi:10.1016/j.jhazmat.2014.04.054Chiron, S. (2000). Pesticide chemical oxidation: state-of-the-art. Water Research, 34(2), 366-377. doi:10.1016/s0043-1354(99)00173-6Chong, M. N., Jin, B., Chow, C. W. K., & Saint, C. (2010). Recent developments in photocatalytic water treatment technology: A review. Water Research, 44(10), 2997-3027. doi:10.1016/j.watres.2010.02.039Herney-Ramirez, J., Vicente, M. A., & Madeira, L. M. (2010). Heterogeneous photo-Fenton oxidation with pillared clay-based catalysts for wastewater treatment: A review. Applied Catalysis B: Environmental, 98(1-2), 10-26. doi:10.1016/j.apcatb.2010.05.004Wang, C., Liu, H., & Sun, Z. (2012). Heterogeneous Photo-Fenton Reaction Catalyzed by Nanosized Iron Oxides for Water Treatment. International Journal of Photoenergy, 2012, 1-10. doi:10.1155/2012/801694Ramirez, J. H., Maldonado-Hódar, F. J., Pérez-Cadenas, A. F., Moreno-Castilla, C., Costa, C. A., & Madeira, L. M. (2007). Azo-dye Orange II degradation by heterogeneous Fenton-like reaction using carbon-Fe catalysts. Applied Catalysis B: Environmental, 75(3-4), 312-323. doi:10.1016/j.apcatb.2007.05.003Navalon, S., Sempere, D., Alvaro, M., & Garcia, H. (2013). Influence of Hydrogen Annealing on the Photocatalytic Activity of Diamond-Supported Gold Catalysts. ACS Applied Materials & Interfaces, 5(15), 7160-7169. doi:10.1021/am401489nEspinosa, J. C., Navalón, S., Álvaro, M., & García, H. (2015). Silver Nanoparticles Supported on Diamond Nanoparticles as a Highly Efficient Photocatalyst for the Fenton Reaction under Natural Sunlight Irradiation. ChemCatChem, 7(17), 2682-2688. doi:10.1002/cctc.201500458Espinosa, J. C., Navalón, S., Álvaro, M., & García, H. (2016). Copper nanoparticles supported on diamond nanoparticles as a cost-effective and efficient catalyst for natural sunlight assisted Fenton reaction. Catalysis Science & Technology, 6(19), 7077-7085. doi:10.1039/c6cy00572aEspinosa, J. C., Catalá, C., Navalón, S., Ferrer, B., Álvaro, M., & García, H. (2018). Iron oxide nanoparticles supported on diamond nanoparticles as efficient and stable catalyst for the visible light assisted Fenton reaction. Applied Catalysis B: Environmental, 226, 242-251. doi:10.1016/j.apcatb.2017.12.060Garrido-Ramírez, E. G., Marco, J. F., Escalona, N., & Ureta-Zañartu, M. S. (2016). Preparation and characterization of bimetallic Fe–Cu allophane nanoclays and their activity in the phenol oxidation by heterogeneous electro-Fenton reaction. Microporous and Mesoporous Materials, 225, 303-311. doi:10.1016/j.micromeso.2016.01.013Karthikeyan, S., Pachamuthu, M. P., Isaacs, M. A., Kumar, S., Lee, A. F., & Sekaran, G. (2016). Cu and Fe oxides dispersed on SBA-15: A Fenton type bimetallic catalyst for N,N -diethyl- p -phenyl diamine degradation. Applied Catalysis B: Environmental, 199, 323-330. doi:10.1016/j.apcatb.2016.06.040Martin, R., Navalon, S., Delgado, J. J., Calvino, J. J., Alvaro, M., & Garcia, H. (2011). Influence of the Preparation Procedure on the Catalytic Activity of Gold Supported on Diamond Nanoparticles for Phenol Peroxidation. Chemistry - A European Journal, 17(34), 9494-9502. doi:10.1002/chem.201100955Council Directive 98/83/EC of 3 November 1998 on the quality of water intended for human consumption.Dhakshinamoorthy, A., Navalon, S., Alvaro, M., & Garcia, H. (2012). Metal Nanoparticles as Heterogeneous Fenton Catalysts. ChemSusChem, 5(1), 46-64. doi:10.1002/cssc.201100517Burkitt, M. J., & Mason, R. P. (1991). Direct evidence for in vivo hydroxyl-radical generation in experimental iron overload: an ESR spin-trapping investigation. Proceedings of the National Academy of Sciences, 88(19), 8440-8444. doi:10.1073/pnas.88.19.8440Li, K., Zhao, Y., Janik, M. J., Song, C., & Guo, X. (2017). Facile preparation of magnetic mesoporous Fe3O4/C/Cu composites as high performance Fenton-like catalysts. Applied Surface Science, 396, 1383-1392. doi:10.1016/j.apsusc.2016.11.17

Bionomics and control of the potato leafhopper, Empoasca mali Le Baron

The potato leafhopper (Empoassca mali, LeB) is the most serious insect pest affecting the potato crop in Iowa, and probably in the Mississippi valley. Thru its feeding activities, it produces a pathological condition in the leaves of many of its host plants which is characterized by a distortion of the leaf veins, especially near the tip and a yellowing of the tissue supplied by them around the margin and at the tip. Often this yellowing is followed by a necrosis of the leaf tissue. Especially is this true on the potato and with this plant the burning is accompanied by a rolling upward and inward of the leaf margin

Control of the Potato Leafhopper

Potato fields In Iowa for several years have suffered from burning, which has seriously cut the yield of this crop. The trouble has been called tlpburn. Its cause was unknown until recently, when It was discovered that It Is due chiefly to the potato leafhopper, a little green, fly-llke Insect that appears In enormous numbers during the summer. The Iowa Agricultural Experiment Station has verified this connection between the leafhopper and tlpburn or hopperburn and control measures have been devised

Humic-like substances from urban waste as auxiliaries for photo-Fenton treatment: a fluorescence EEM-PARAFAC study

[EN] In this work, analysis of excitation-emission-matrices (EEM) has been employed to gain further insight into the characterization of humic like substances (HLS) obtained from urban wastes (soluble bio-organic substances, SBOs). In particular, complexation of these substances with iron and changes along a photo-Fenton process have been studied. Recorded EEMs were decomposed by using parallel factor analysis (PARAFAC). Three fluorescent components were identified by PARAFAC modeling of the entire set of SBO solutions studied. The EEM peak locations (lambda(ex)/lambda(em)) of these components were 310-330 nm/400-420 nm (C1), 340-360 nm/450-500 nm (C2), and 285 nm/335-380 nm (C3). Slight variations of the maximum position of each component with the solution pH were observed. The interaction of SBO with Fe(III) was characterized by determining the stability constants of the components with Fe(III) at different pH values, which were in the order of magnitude of the ones reported for humic substances and reached their highest values at pH = 5. Photochemical experiments employing SBO and Fe(III), with and without H2O2, showed pH-dependent trends for the evolution of the modeled components, which exhibited a strong correlation with the efficiency reported for the photo-Fenton processes in the presence of SBO at different pH values.This work was supported by Generalitat Valenciana, Conselleria d'Ecuacio, Cultura i esport, Spain (GV/2015/074), Spanish Ministerio de Economia y Competitividad (CTQ2015-69832-C4-4-R) and by the Marie Sklodowska-Curie Research and Innovation Staff Exchange project funded by the European Commission H2020-MSCA-RISE-2014 (Project number: 645551). F. S. G. E. and L. C. are researchers from CONICET, Argentina.García-Ballesteros, S.; Constante, M.; Vicente Candela, R.; Mora Carbonell, M.; Amat Payá, AM.; Arques Sanz, A.; Carlos, L.... (2017). Humic-like substances from urban waste as auxiliaries for photo-Fenton treatment: a fluorescence EEM-PARAFAC study. Photochemical & Photobiological Sciences. 16:38-45. https://doi.org/10.1039/c6pp00236fS384516Malato, S., Fernández-Ibáñez, P., Maldonado, M. I., Blanco, J., & Gernjak, W. (2009). Decontamination and disinfection of water by solar photocatalysis: Recent overview and trends. Catalysis Today, 147(1), 1-59. doi:10.1016/j.cattod.2009.06.018WANG, J. L., & XU, L. J. (2012). Advanced Oxidation Processes for Wastewater Treatment: Formation of Hydroxyl Radical and Application. Critical Reviews in Environmental Science and Technology, 42(3), 251-325. doi:10.1080/10643389.2010.507698Pignatello, J. J., Oliveros, E., & MacKay, A. (2006). Advanced Oxidation Processes for Organic Contaminant Destruction Based on the Fenton Reaction and Related Chemistry. Critical Reviews in Environmental Science and Technology, 36(1), 1-84. doi:10.1080/10643380500326564Papoutsakis, S., Miralles-Cuevas, S., Oller, I., Garcia Sanchez, J. L., Pulgarin, C., & Malato, S. (2015). Microcontaminant degradation in municipal wastewater treatment plant secondary effluent by EDDS assisted photo-Fenton at near-neutral pH: An experimental design approach. Catalysis Today, 252, 61-69. doi:10.1016/j.cattod.2015.02.005Klamerth, N., Malato, S., Agüera, A., & Fernández-Alba, A. (2013). Photo-Fenton and modified photo-Fenton at neutral pH for the treatment of emerging contaminants in wastewater treatment plant effluents: A comparison. Water Research, 47(2), 833-840. doi:10.1016/j.watres.2012.11.008De Luca, A., Dantas, R. F., & Esplugas, S. (2015). Study of Fe(III)-NTA chelates stability for applicability in photo-Fenton at neutral pH. Applied Catalysis B: Environmental, 179, 372-379. doi:10.1016/j.apcatb.2015.05.025Bernabeu, A., Palacios, S., Vicente, R., Vercher, R. F., Malato, S., Arques, A., & Amat, A. M. (2012). Solar photo-Fenton at mild conditions to treat a mixture of six emerging pollutants. Chemical Engineering Journal, 198-199, 65-72. doi:10.1016/j.cej.2012.05.056Klamerth, N., Malato, S., Maldonado, M. I., Agüera, A., & Fernández-Alba, A. (2011). Modified photo-Fenton for degradation of emerging contaminants in municipal wastewater effluents. Catalysis Today, 161(1), 241-246. doi:10.1016/j.cattod.2010.10.074Voelker, B. M., Morel, F. M. M., & Sulzberger, B. (1997). Iron Redox Cycling in Surface Waters:  Effects of Humic Substances and Light. Environmental Science & Technology, 31(4), 1004-1011. doi:10.1021/es9604018De la Cruz, N., Giménez, J., Esplugas, S., Grandjean, D., de Alencastro, L. F., & Pulgarín, C. (2012). Degradation of 32 emergent contaminants by UV and neutral photo-fenton in domestic wastewater effluent previously treated by activated sludge. Water Research, 46(6), 1947-1957. doi:10.1016/j.watres.2012.01.014Gomis, J., Vercher, R. F., Amat, A. M., Mártire, D. O., González, M. C., Bianco Prevot, A., … Carlos, L. (2013). Application of soluble bio-organic substances (SBO) as photocatalysts for wastewater treatment: Sensitizing effect and photo-Fenton-like process. Catalysis Today, 209, 176-180. doi:10.1016/j.cattod.2012.08.036Gomis, J., Carlos, L., Prevot, A. B., Teixeira, A. C. S. C., Mora, M., Amat, A. M., … Arques, A. (2015). Bio-based substances from urban waste as auxiliaries for solar photo-Fenton treatment under mild conditions: Optimization of operational variables. Catalysis Today, 240, 39-45. doi:10.1016/j.cattod.2014.03.034Gomis, J., Bianco Prevot, A., Montoneri, E., González, M. C., Amat, A. M., Mártire, D. O., … Carlos, L. (2014). Waste sourced bio-based substances for solar-driven wastewater remediation: Photodegradation of emerging pollutants. Chemical Engineering Journal, 235, 236-243. doi:10.1016/j.cej.2013.09.009Avetta, P., Berto, S., Bianco Prevot, A., Minella, M., Montoneri, E., Persico, D., … Arques, A. (2015). Photoinduced transformation of waste-derived soluble bio-based substances. Chemical Engineering Journal, 274, 247-255. doi:10.1016/j.cej.2015.03.126Gomis, J., Gonçalves, M. G., Vercher, R. F., Sabater, C., Castillo, M.-A., Prevot, A. B., … Arques, A. (2015). Determination of photostability, biocompatibility and efficiency as photo-Fenton auxiliaries of three different types of soluble bio-based substances (SBO). Catalysis Today, 252, 177-183. doi:10.1016/j.cattod.2014.10.015Berkovic, A. M., García Einschlag, F. S., Gonzalez, M. C., Pis Diez, R., & Mártire, D. O. (2013). Evaluation of the Hg2+binding potential of fulvic acids from fluorescence excitation–emission matrices. Photochem. Photobiol. Sci., 12(2), 384-392. doi:10.1039/c2pp25280eStedmon, C. A., & Bro, R. (2008). Characterizing dissolved organic matter fluorescence with parallel factor analysis: a tutorial. Limnology and Oceanography: Methods, 6(11), 572-579. doi:10.4319/lom.2008.6.572Ishii, S. K. L., & Boyer, T. H. (2012). Behavior of Reoccurring PARAFAC Components in Fluorescent Dissolved Organic Matter in Natural and Engineered Systems: A Critical Review. Environmental Science & Technology, 46(4), 2006-2017. doi:10.1021/es2043504Su, Y., Chen, F., & Liu, Z. (2015). Comparison of optical properties of chromophoric dissolved organic matter (CDOM) in alpine lakes above or below the tree line: insights into sources of CDOM. Photochemical & Photobiological Sciences, 14(5), 1047-1062. doi:10.1039/c4pp00478gYang, X., Meng, F., Huang, G., Sun, L., & Lin, Z. (2014). Sunlight-induced changes in chromophores and fluorophores of wastewater-derived organic matter in receiving waters – The role of salinity. Water Research, 62, 281-292. doi:10.1016/j.watres.2014.05.050Wu, J., Zhang, H., He, P.-J., & Shao, L.-M. (2011). Insight into the heavy metal binding potential of dissolved organic matter in MSW leachate using EEM quenching combined with PARAFAC analysis. Water Research, 45(4), 1711-1719. doi:10.1016/j.watres.2010.11.022Yamashita, Y., & Jaffé, R. (2008). Characterizing the Interactions between Trace Metals and Dissolved Organic Matter Using Excitation−Emission Matrix and Parallel Factor Analysis. Environmental Science & Technology, 42(19), 7374-7379. doi:10.1021/es801357hNisticò, R., Barrasso, M., Carrillo Le Roux, G. A., Seckler, M. M., Sousa, W., Malandrino, M., & Magnacca, G. (2015). Biopolymers from Composted Biowaste as Stabilizers for the Synthesis of Spherical and Homogeneously Sized Silver Nanoparticles for Textile Applications on Natural Fibers. ChemPhysChem, 16(18), 3902-3909. doi:10.1002/cphc.201500721Ohno, T. (2002). Fluorescence Inner-Filtering Correction for Determining the Humification Index of Dissolved Organic Matter. Environmental Science & Technology, 36(4), 742-746. doi:10.1021/es0155276Bahram, M., Bro, R., Stedmon, C., & Afkhami, A. (2006). Handling of Rayleigh and Raman scatter for PARAFAC modeling of fluorescence data using interpolation. Journal of Chemometrics, 20(3-4), 99-105. doi:10.1002/cem.978Ryan, D. K., & Weber, J. H. (1982). Fluorescence quenching titration for determination of complexing capacities and stability constants of fulvic acid. Analytical Chemistry, 54(6), 986-990. doi:10.1021/ac00243a033Yan, M., Fu, Q., Li, D., Gao, G., & Wang, D. (2013). Study of the pH influence on the optical properties of dissolved organic matter using fluorescence excitation–emission matrix and parallel factor analysis. Journal of Luminescence, 142, 103-109. doi:10.1016/j.jlumin.2013.02.052Dryer, D. J., Korshin, G. V., & Fabbricino, M. (2008). In Situ Examination of the Protonation Behavior of Fulvic Acids Using Differential Absorbance Spectroscopy. Environmental Science & Technology, 42(17), 6644-6649. doi:10.1021/es800741uGhosh, K., & Schnitzer, M. (1981). Fluorescence Excitation Spectra and Viscosity Behavior of a Fulvic Acid and its Copper and Iron Complexes1. Soil Science Society of America Journal, 45(1), 25. doi:10.2136/sssaj1981.03615995004500010005xLyon, B. A., Cory, R. M., & Weinberg, H. S. (2014). Changes in dissolved organic matter fluorescence and disinfection byproduct formation from UV and subsequent chlorination/chloramination. Journal of Hazardous Materials, 264, 411-419. doi:10.1016/j.jhazmat.2013.10.065Poulin, B. A., Ryan, J. N., & Aiken, G. R. (2014). Effects of Iron on Optical Properties of Dissolved Organic Matter. Environmental Science & Technology, 48(17), 10098-10106. doi:10.1021/es502670rXu, H., Yan, Z., Cai, H., Yu, G., Yang, L., & Jiang, H. (2013). Heterogeneity in metal binding by individual fluorescent components in a eutrophic algae-rich lake. Ecotoxicology and Environmental Safety, 98, 266-272. doi:10.1016/j.ecoenv.2013.09.008Esteves da Silva, J. (1998). Fluorescence quenching of anthropogenic fulvic acids by Cu(II), Fe(III) and UO22+. Talanta, 45(6), 1155-1165. doi:10.1016/s0039-9140(97)00224-5Zhao, J., & Nelson, D. J. (2005). Fluorescence study of the interaction of Suwannee River fulvic acid with metal ions and Al3+-metal ion competition. Journal of Inorganic Biochemistry, 99(2), 383-396. doi:10.1016/j.jinorgbio.2004.10.005Mikutta, C., & Kretzschmar, R. (2011). Spectroscopic Evidence for Ternary Complex Formation between Arsenate and Ferric Iron Complexes of Humic Substances. Environmental Science & Technology, 45(22), 9550-9557. doi:10.1021/es202300wOrsetti, S., Laskov, C., & Haderlein, S. B. (2013). Electron Transfer between Iron Minerals and Quinones: Estimating the Reduction Potential of the Fe(II)-Goethite Surface from AQDS Speciation. Environmental Science & Technology, 47(24), 14161-14168. doi:10.1021/es403658gLopes, L., de Laat, J., & Legube, B. (2002). Charge Transfer of Iron(III) Monomeric and Oligomeric Aqua Hydroxo Complexes:  Semiempirical Investigation into Photoactivity. Inorganic Chemistry, 41(9), 2505-2517. doi:10.1021/ic011029