Francisco López‐Muñoz, Cecilio Álamo González, José Antonio Guerra, Pilar García García,
The discovery and development of the so-called 'nerve agents' (neurotoxic substances to be used as weapons) took place in the Third Reich, largely thanks to the vast amount of progress being made in pharmacology in Germany at that time, both in academic and industrial terms. Furthermore, successive National Socialist governments set up a collaborative network made up of the academia, the chemical industry and military chiefs that also favoured this line of research.The first neurotoxic substance to ...
Tópico(s): Historical Medical Research and Treatments
2008 - Viguera Publishers | Revista de Neurología
Produção Nacional
Revisado por pares
Alexandre A. de Castro, Ingrid G. Prandi, Kamil Kuča, Teodorico C. Ramalho,
... agricultura como pesticidas e, infelizmente, como agentes de guerra química (ou agentes dos nervos) também. Os pesticidas organofosforados ...
Tópico(s): Chemical Reaction Mechanisms
2017 - UNIVERSIDADE FEDERAL DE LAVRAS | Ciência e Agrotecnologia
<p>La fumigación aérea con glifosato fue un componente central de la política antidroga de Estados Unidos y Colombia hasta el año 2015. En este artículo hago un seguimiento etnográfico de las quejas de campesinos del Departamento del Putumayo, quienes buscan ser reparados por la aspersión aérea de su agroforestería lícita. Revelo hasta qué punto la evidencia que circula en estas zonas de guerra —semilleros, cultivos de pancoger, coordenadas de GPS y documentos burocráticos— retiene las huellas ...
Tópico(s): Conflict, Peace, and Violence in Colombia
2017 - Pontifical Xavierian University | Universitas Humanística
Insecticidas organofosforados
Tópico(s): Pesticide and Herbicide Environmental Studies
2002 - SciELO | Medifam
Lê Thị Tuyết, Annika Johansson,
... El objetivo era revelar el impacto de la guerra quimica en las vidas de las personas. Se utilizaron ...
Tópico(s): Toxic Organic Pollutants Impact
2001 - Taylor & Francis | Reproductive Health Matters
Produção Nacional
Juliana O. S. Giacoppo, Wilian E. A. de Lima, Kamil Kuča, Tanos C. C. França, Elaine F. F. da Cunha, Teodorico C. Ramalho,
Os ataques recentes na Siria utilizando o agente neurotoxico sarin alertaram mais uma vez a opiniao publica mundial e a comunidade cientifica quanto a utilizacao de armas quimicas. Sabe-se que agentes dos nervos sao potentes inibidores da acetilcolinesterase (AChE), enzima responsavel pela hidrolise do neurotransmissor acetilcolina e, consequentemente, pela transmissao de impulsos nervosos. A inibicao da AChE por um organofosforado (OP) pode ser revertida por um nucleofilo, que desfosforila a Ser203 ...
Tópico(s): Chemical Reaction Mechanisms
2014 - Brazilian Society of Chemistry | Revista Virtual de Química
Monsterrat García‐Alvarez, Alfonso Rodríguez‐Galán, Sebastián Muñoz‐Guerra,
... this authorSebastián Muñoz-Guerra, Corresponding Author Sebastián Muñoz-Guerra Departmento de Ingenieria Química, Escuela Técnica Superior de Ingenieros Industriales de Barcelona, ... this authorSebastián Muñoz-Guerra, Corresponding Author Sebastián Muñoz-Guerra Departmento de Ingenieria Química, Escuela Técnica Superior de Ingenieros Industriales de Barcelona, ...
Tópico(s): Chemical Reactions and Mechanisms
1992 - Wiley | Die Makromolekulare Chemie Rapid Communications
Joan Vives, Alfonso Rodríguez‐Galán, Sebastián Muñoz‐Guerra, Hikaru Sekiguchi,
... papers by this authorSebastián Muñoz-Guerra, Sebastián Muñoz-Guerra Departmento de Ingeniería Química, Escuela Técnica Superior de Ingenieros Industriales de Barcelona, ... papers by this authorSebastián Muñoz-Guerra, Sebastián Muñoz-Guerra Departmento de Ingeniería Química, Escuela Técnica Superior de Ingenieros Industriales de Barcelona, ...
Tópico(s): Chemical Synthesis and Analysis
1989 - Wiley | Die Makromolekulare Chemie Rapid Communications
Montserrat García‐Alvarez, Francisco L�pez-Carrasquero, Margarita Morillo, Sebasti�n Mu�oz-Guerra,
... this authorSebastián Muñoz-Guerra, Corresponding Author Sebastián Muñoz-Guerra Departament d'Enginyeria Química, Universitat Politécnica de Catalunya E.T.S.E. ... this authorSebastián Muñoz-Guerra, Corresponding Author Sebastián Muñoz-Guerra Departament d'Enginyeria Química, Universitat Politécnica de Catalunya E.T.S.E. ...
Tópico(s): Recycling and Waste Management Techniques
1997 - Wiley | Journal of Polymer Science Part B Polymer Physics
J. González Martín-Moro, G. Azurza Rivas,
Numerous studies have adopted deep learning (DL) in financial market forecasting models owing to its superior performance. The DL models require as many relevant input variables as possible to improve performance because they learn high-level features from these inputs. However, as the number of input variables increases, the number of parameters also increases, leaving the model prone to overfitting. We propose a novel stock-market prediction framework (LSTM–Forest) integrating long short-term memory ...
Tópico(s): Marine Toxins and Detection Methods
2014 - Elsevier BV | Archivos de la Sociedad Española de Oftalmología
Jordi Puiggalı́, S. Muñoz‐Guerra, Juan A. Subirana,
... papers by this authorSebastian Muñoz-Guerra, Sebastian Muñoz-Guerra Departamentos de Química, e Ingenieńa Química, Escuela T. S. de Ingenieros ... papers by this authorSebastian Muñoz-Guerra, Sebastian Muñoz-Guerra Departamentos de Química, e Ingenieńa Química, Escuela T. S. de Ingenieros ...
Tópico(s): Surface Modification and Superhydrophobicity
1987 - Wiley | Journal of Polymer Science Part A Polymer Chemistry
Christophe Daniel, S. Giudice, Gaetano Guerra,
The influence of thermal treatments and supercritical carbon dioxide extraction procedures on the crystal structure and morphology of sPS aerogels is investigated mainly by wide-angle X-ray diffraction and scanning electron microscopy. The use of supercritical CO2 extraction treatments allows the obtaining of high porosity aerogels with fibrillar morphology, not only exhibiting the nanoporous δ phase but also the dense γ and β crystalline phases. Moreover, a procedure to obtain high-porosity aerogels ...
Tópico(s): Phase Equilibria and Thermodynamics
2009 - American Chemical Society | Chemistry of Materials
José Bonilla‐Cruz, Carlos Guerrero‐Sánchez, Ulrich S. Schubert, Enrique Saldívar‐Guerra,
High-throughput experimentation was used for the functionalization of polybutadiene and polyisoprene with several kinds of nitroxide moieties at 135 °C, as well as for kinetic investigations of the controlled free radical grafting of styrene and maleic anhydride onto the functionalized polydienes at 125 °C. The functionalized polymers were analyzed by GPC, 1H NMR and FT-IR and the control of the grafting process was assessed by kinetic measurements and GPC analysis. The best control in the molecular ...
Tópico(s): biodegradable polymer synthesis and properties
2009 - Elsevier BV | European Polymer Journal
Nathalie González‐Vidal, Antxon Martı́nez de Ilarduya, Virginia Herrera, Sebastián Muñoz‐Guerra,
A set of aromatic−aliphatic copolyesters were synthesized by ring-opening polymerization of hexamethylene terephthalate (HT) cyclic oligomers and ϵ-caprolactone monomer (CL) at 175 °C using Sb2O3 catalyst. A hexamer- and heptamer-enriched cyclic fraction isolated from the product obtained in the cyclo-depolymerization of poly(hexamethylene terephthalate) (PHT) was used. Ring-opening copolymerizations were conducted for HT to CL feed ratios covering the whole range of compositions and for increasing ...
Tópico(s): Synthetic Organic Chemistry Methods
2008 - American Chemical Society | Macromolecules
Tópico(s): Advanced Chemical Physics Studies
1969 - Elsevier BV | Journal of Colloid and Interface Science
Finizia Auriemma, Christophe Daniel, Manohar Golla, Baku Nagendra, Paola Rizzo, Oreste Tarallo, Gaetano Guerra,
Relevant information on PPO crystallization, with particular emphasis on nanoporous crystalline (NC) and related co-crystalline (CC) forms, is reviewed. Preparation methods, structures, properties and possible applications of NC and CC samples are discussed. Reviewed results mainly refer to films (unoriented or with axial or planar orientations) but also to NC powders and NC aerogels. Particular attention is given to the impressive solubility and diffusivity of organic guests, which can be achieved ...
Tópico(s): Ionic liquids properties and applications
2022 - Elsevier BV | Polymer
Antxon Martı́nez de Ilarduya, Sebastián Muñoz‐Guerra,
A review about the synthesis of renewable alkylene furanoate and dicarboxylate MCOs, their ROP to polyesters and their recycling by cyclodepolymerization.
Tópico(s): Chemical Synthesis and Reactions
2020 - Royal Society of Chemistry | Polymer Chemistry
Abstract The molecular weight distribution (MWD) is possibly the most important characteristic of a polymer. Polymers derive many of their physical properties from their MWD. Therefore, since the origins of polymer science, the theory provides a link between the kinetic mechanism and the mathematical expression of the MWD, and there are analytical solutions for ideal cases. However, the MWD formed in real‐life polymerization processes is usually more complex; the solution of the mathematical models ...
Tópico(s): Advanced Polymer Synthesis and Characterization
2020 - Wiley | Macromolecular Reaction Engineering
Produção Nacional
Revisado por pares
M.O. Diniz, Alana Fernandes Golin, Mirela de Castro Santos, Rodrigo Fernando Bianchi, Elídia Maria Guerra,
Conducting polymers such as polyaniline (PANi) have been widely investigated as ammonia gas sensors due to their intrinsic redox states, good environmental stability, and suitability for low-cost and variable changing in electrical conductivity when exposed to acid and basic gases. In this paper we used both a hybrid PANi derivative, poly(o-methoxyaniline) (POMA)-vanadium pentoxide (V2O5) film, and new ac electrical measurement strategies to increase the ammonia gas sensor performance. Complex impedance ...
Tópico(s): Gas Sensing Nanomaterials and Sensors
2019 - Elsevier BV | Organic Electronics
Christophe Daniel, Pasqualmorica Antico, Gaetano Guerra,
Nanoporous-crystalline (δ and ε form) fibers of syndiotactic polystyrene (s-PS) have been prepared from melt-spun fibers by different guest-induced cocrystallization procedures. Their crystal structure, morphology, and uptake of volatile organic compounds (VOC) have been investigated. The use of chloroform, i.e., of a molecule being a suitable guest for both δ and ε forms but also a strong solvent for s-PS, leads to nanoporous-crystalline fibers with VOC sorption kinetics much faster than for s-PS ...
Tópico(s): Membrane Separation and Gas Transport
2018 - American Chemical Society | Macromolecules
Juan Carlos Morales‐Huerta, Antxon Martı́nez de Ilarduya, Sebastián Muñoz‐Guerra,
Poly(ethylene succinate) (PES) with weight-average molecular weight above 60,000 g mol−1 was efficiently obtained by enzymatic ring opening polymerization of cyclic oligo(ethylene succinate)s c(ES)n, which in turn were prepared by lipase-catalysed cyclocondensation in solution of dimethyl succinate and ethylene glycol. The methodology was demonstrated to be also applicable to the synthesis of high molecular weight PES-copolyesters containing butylene succinate, ε-hydroxycaproate or l-lactate units ...
Tópico(s): Catalysis for Biomass Conversion
2017 - Elsevier BV | European Polymer Journal
Claudio Batista Ciulik, Maryam Safari, Antxon Martı́nez de Ilarduya, Juan Carlos Morales‐Huerta, Amaia Iturrospe, Arantxa Arbe, Alejandro J. Müller, Sebastián Muñoz‐Guerra,
In this paper, the preparation of PBS-ran-PCL copolyesters by enzymatic ring opening polymerization is presented for the first time. The copolyesters were produced in a wide composition range and free of metallic contaminants, so they may be regarded as potential biomaterials. The copolymers have been characterized by proton and carbon nuclear magnetic resonance (1H and 13C NMR), gel permeation chromatography (GPC), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), polarized ...
Tópico(s): Catalysis for Biomass Conversion
2017 - Elsevier BV | European Polymer Journal
Christophe Daniel, Marina Pellegrino, Vincenzo Venditto, Stefania Aurucci, Gaetano Guerra,
Tópico(s): Supercapacitor Materials and Fabrication
2016 - Elsevier BV | Polymer
Maria Rosaria Acocella, Luciana D′Urso, Mario Maggio, Gaetano Guerra,
Abstract The ring‐opening reactions of epoxides with amines were efficiently and regioselectively catalyzed by high‐surface‐area graphite and graphene oxide under metal‐free and solvent‐free conditions. For epoxides without aryl groups, catalytic activity was observed only for graphene oxide, and hence, the activity must have been due to its acidic groups. For styrene oxide, instead, graphite and graphene oxide exhibited rather similar catalytic activities, and hence, the activity was mainly due ...
Tópico(s): Sulfur-Based Synthesis Techniques
2016 - Wiley | ChemCatChem
Mayka Bautista, Antxon Martı́nez de Ilarduya, Abdelilah Alla, Sebastián Muñoz‐Guerra,
A series of poly(butylene succinate) (PBS) ionomers containing up to 14 mol% of sulfonated succinate units have been synthesized by polycondensation in the melt-phase. The copolyesters were obtained with weight average molecular weights oscillating between 33,000 and 72,000 g·mol−1. All copolyesters were semicrystalline with melting temperatures and enthalpies decreasing and glass transition temperatures increasing with the content of ionic units. The thermal stability of PBS was slightly reduced ...
Tópico(s): Polymer crystallization and properties
2015 - Multidisciplinary Digital Publishing Institute | Polymers
Mayka Bautista, Antxon Martı́nez de Ilarduya, Abdelilah Alla, Marc Vives, Jordi Morató, Sebastián Muñoz‐Guerra,
The synthesis, characterization and comparative evaluation of properties of two series of cationic PBS copolyesters bearing respectively ammonium and tributylphosphonium side groups, are reported. The copolyesters with contents in ionic units up to 50 mole-% as well as the fully ionic homopolyesters were prepared by polycondensation in the melt catalyzed by CALB or TBT. Their Mn ranged between 20,000 and 5000 g mol−1 depending of composition and the type of ionic group that is involved. All the ...
Tópico(s): Antimicrobial agents and applications
2015 - Elsevier BV | European Polymer Journal
Produção Nacional
Revisado por pares
Renata de Castro Campos, Dane Tadeu Cestarolli, Marcelo Mulato, Elídia Maria Guerra,
In this present study, the investigation about pH sensorial properties of WO3, via sol-gel, was evaluated by Voltammetry and Extended Gate Field Effect Transistor techniques. The X-ray diffractogram indicates the presence of a lamellar structure, d = 0.69 nm, resulting in WO3.2H2O. From Scanning Electron Microscopy of WO3.2H2O was observed a process corresponding to the delamination which consists of irregular stacking with rounded platelets. The WO3.2H2O was investigated as a pH sensor in the pH ...
Tópico(s): Electrochemical sensors and biosensors
2015 - Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímer | Materials Research
Elena Zakharova, Cristina Lavilla, Abdelilah Alla, Antxon Martı́nez de Ilarduya, Sebastián Muñoz‐Guerra,
The two cyclic acetals, 2,3-di-O-methylene-l-threitol and dimethyl 2,3-di-O-methylene-l-threarate, were used for the synthesis of two series of PBS copolyesters differing in which unit, butylene or succinate, was replaced, in addition of the corresponding parent homopolyesters. Polycondensation reactions were carried out in the melt affording polymers with satisfactory molecular weights. Copolyesters were prepared with contents in tartaric acid-based units over the whole range of compositions and ...
Tópico(s): Polyoxometalates: Synthesis and Applications
2014 - Elsevier BV | European Polymer Journal
Alberto Lanz‐Landázuri, Antxon Martı́nez de Ilarduya, Montserrat García‐Alvarez, Sebastián Muñoz‐Guerra,
Poly(β,L-malic acid) (PMLA) was made to interact with the cationic anticancer drug Doxorubicin (DOX) in aqueous solution to form ionic complexes with different compositions and an efficiency near to 100%. The PMLA/DOX complexes were characterized by spectroscopy, thermal analysis, and scanning electron microscopy. According to their composition, the PMLA/DOX complexes spontaneously self-assembled into spherical micro or nanoparticles with negative surface charge. Hydrolytic degradation of PMLA/DOX ...
Tópico(s): Polymer Surface Interaction Studies
2014 - Elsevier BV | Reactive and Functional Polymers
Lore Troalen, Jim Tate, Maria Guerra,
Described by Petrie as 'the largest group of goldwork that had left Egypt', the jewellery from the intact burial of an adult and child discovered at Qurneh in 1908 is the most important group of gold objects excavated in Egypt dating from the 2nd Intermediate Period (c. 1800–1550 BC). This unique collection has been studied using several non-invasive analytical techniques (μPIXE, PIGE, XRF, and SEM-EDS), while calculation of the effective penetration depth values allowed the degree of surface enrichment ...
Tópico(s): Ion-surface interactions and analysis
2014 - Elsevier BV | Journal of Archaeological Science