Development of particle morphology in emulsion polymerization. 1. Cluster dynamics

Abstract

Simple and convenient methods for determining surface chemical composition of lignocellulosic materials are described. The methods are based on vapor phase fluorine surface derivatization with either trifluoro acetic anhydride (TFAA), tri-fluoro ethanol (TFE) or pentafluorophenyl hydrazine (PFPH) and subsequent Electron Spectroscopy for Chemical Analysis (ESCA). Model cellulosic surfaces with well defined functionalities were used to optimize the derivatization reaction conditions. Detection and accessibility of surface hydroxyl functional groups were investigated in cotton and regenerated cellulose as models. Carboxymethyl cellulose (CMC) was used as a model surface for detection and quantification of carboxylic acid groups. Theoretical conversion curves for derivatization reactions were calculated and used to evaluate the extent of the reactions on the model surfaces. It was found that the conversion was higher for the regenerated cellulose and CMC than for cotton. The protocols developed using the model surfaces were applied to a case study on wood fibers with different degrees of complexity, namely dissolving and chemithermomechanical (CTMP) pulp. Untreated and oxygen-plasma modified pulps were compared with respect to the surface composition of functional groups. According to the derivatization reactions, functionalities containing oxygen were significantly increased on the plasma-treated samples. The effect of the treatment was found to be dependent on the type of pulp. Fluorine derivatization is shown to be an unambiguous method for clear assessment of the chemical functionalities of cellulosic surfaces. " Springer Science+Business Media, Inc. 2006.",,,,,,"10.1007/s10570-005-5855-z",,,"http://hdl.handle.net/20.500.12104/40585","http://www.scopus.com/inward/record.url?eid=2-s2.0-33645890553&partnerID=40&md5=0b4f3f84a1a5e66b4bdbb2adb5fb54a2",,,,,,"2",,"Cellulose",,"157

170",,"13",,"Scopus

WOS",,,,,,"Derivatization; ESCA; Lignocellulosic fibers; Surface",,,,,,"Determination of surface functional groups in lignocellulosic materials by chemical derivatization ESCA analysis",,"Article" "42372","123456789/35008",,,,"Gutiérrez Cham, Gerardo",,"2014",,,,,,,,,,"1405-6313","http://hdl.handle.net/20.500.12104/40593","http://www.uaemex.mx/plin/colmena/Colmena_81/docs/Ejecucion_y_poder.pdf; http://132.248.9.1:8991/F/T2YHQN5JKYSPCIP3SAPK3TB1KGTDDEFCSVNH496MXCXGEJUB2B-05623?func=full-set-set&set_number=025047&set_entry=000033&format=999",,"Español",,,,"81",,"La colmena",,"61-73",,,,"CLASE

PERIODICA",,,,,,,,"Narrativa",,,,"Ejecución y poder en El jefe máximo, de Ignacio Solares",,"journalArticle" "42382","123456789/35008",,"Armería-Zavala, L., Information System Department, University of Guadalajara, Mexico; Hernández-Gallardo, S.C., Information System Department, University of Guadalajara, Mexico",,"Armeria-Zavala, L.

Hernandez-Gallardo, S.C.",,"2012",,"This research focuses on instrumentation of information technologies that become psychological tools, designed to develop number sense of third graders. The theoretical background is supported by the Cultural-Historical approach, and considers that, using a serious game; emphasize the student's attention and perception for constructing mathematical concepts. A preliminary outcome identifies numerical relationships and counting, as a field of opportunity to increase math skills associated with number sense.",,,,,,,,,"http://hdl.handle.net/20.500.12104/40603","http://www.scopus.com/inward/record.url?eid=2-s2.0-84888373186&partnerID=40&md5=81de7ec67b1da277286c33e05a7bb1ab",,,,,,,,"Doctoral Student Consortium Proceedings of the 20th International Conference on Computers in Education, ICCE 2012",,"29

33",,,,"Scopus",,,,,,"Artifact; Number sense; Serious game",,,,,,"Development of number sense in third grade of elementary school using serious game",,"Conference Paper" "42377","123456789/35008",,"Puga, N.D., Biosistemática, Ecología y Manejo de Recursos Naturales y agrícolas, Universidad de Guadalajara; Corral, J.A.R., INIFAP, Campo Experimental Centro Altos de Jalisco; Eguiarte, D.R.G., Biosistemática, Ecología y Manejo de Recursos Naturales y agrícolas, Universidad de Guadalajara; Hernández, G.N., INIFAP, Región Norte Centro, Campo experimental La Laguna; Ramírez, F.J.P., Biosistemática, Ecología y Manejo de Recursos Naturales y agrícolas, Universidad de Guadalajara; Rodríguez, S.H.C., Biosistemática, Ecología y Manejo de Recursos Naturales y agrícolas, Universidad de Guadalajara",,"Puga, N.D.

Corral, J.A.R.

Eguiarte, D.R.G.

Hernandez, G.N.

Ramirez, F.J.P.

Rodriguez, S.H.C.",,"2011",,"The purposes of the present study were to determine cardinal development temperatures (minimum threshold [base] temperature Tb, optimal temperature To, and maximum threshold [ceiling] temperature Tu) and to identify a method for estimating with accuracy thermal requirements for the planting-emergence (E) stage of 11 forage grasses. One hundred and twenty (120) seeds of each species were planted in containers under controlled conditions in a completely randomized design with three replications at constant temperatures from 15 to 46 °C in the controlled environment chambers at the Instituto Nacional de Investigaciones Forestales agrícolas y Pecuarias (INIFAP) in Guadalajara, Jalisco, México. Cardinal temperatures and thermal requirement were estimated through both bilinear method (MB) and curvilinear method (MC), and their fitness was evaluated by means of direct comparison with development values observed in the controlled environment and through the coefficient of variation of E length expressed as accumulated heat units (UCA). Results showed that MB was best for estimating Tb and To, while MC proved better for estimating Tu. Tb (°C), To (°C), Tu (°C) and UCA values for planting-emergence for each species were: Lolium perenne 9, 31, 41, 80; Festuca arundinacea 10, 31, 41, 78; Hyparrhenia rufa 12, 32, 42, 62; Eragrostis curvula 13, 32, 47, 40; Chloris gayana 13, 31, 47, 40; Melinis minutiflora 13, 31, 43, 50; Pennisetum clandestinum 12, 32, 43, 65; Brachiaria mutica 14, 32, 43, 57; Andropogon gayanus 12, 37, 48, 66; Cynodon dactylon 14, 29, 44, 48; Pennicetum ciliare 13, 30, 42, 61, respectively.",,,,,,,,,"http://hdl.handle.net/20.500.12104/40598","http://www.scopus.com/inward/record.url?eid=2-s2.0-79960066650&partnerID=40&md5=b10ea7750ac79458bcc0acf3e866be9d",,,,,,"3",,"Tecnica Pecuaria en Mexico",,"347

357",,"2",,"Scopus",,,,,,"Cardinal temperatures; Germination; Grasses; Heat units",,,,,,"Development cardinal temperatures of the planting-emergence stage for 11 forage grasses [Temperaturas cardinales de desarrollo en la etapa siembraemergencia de 11 pastos forrajeros]",,"Article" "42379","123456789/35008",,"Cano, M.E., Instituto de Física, Universidad de Guanajuato, Loma del Bosque 103, Lomas del Campestre, 37150 León-Gto., Mexico, Centro Universitario de la Ciénega, Universidad de Guadalajara, Av. Universidad 1115, Ocotlán.-Jal., Mexico; Fraga, T.C., Instituto de Física, Universidad de Guanajuato, Loma del Bosque 103, Lomas del Campestre, 37150 León-Gto., Mexico; Pacheco, A.H., Instituto de Física, Universidad de Guanajuato, Loma del Bosque 103, Lomas del Campestre, 37150 León-Gto., Mexico; Moreles, M.A., Instituto de Física, Universidad de Guanajuato, Loma del Bosque 103, Lomas del Campestre, 37150 León-Gto., Mexico; Sámano, A.H., Instituto de Física, Universidad de Guanajuato, Loma del Bosque 103, Lomas del Campestre, 37150 León-Gto., Mexico; Sosa, M.A., Instituto de Física, Universidad de Guanajuato, Loma del Bosque 103, Lomas del Campestre, 37150 León-Gto., Mexico",,"Cano, M.E.

Fraga, T.C.

Pacheco, A.H.

Moreles, M.A.

Samano, A.H.

Sosa, M.A.",,"2008",,"[No abstract available]",,,,,,,,,"http://hdl.handle.net/20.500.12104/40600","http://www.scopus.com/inward/record.url?eid=2-s2.0-84907060169&partnerID=40&md5=15554e5a2e41cc2e5aa633a18a493453",,,,,,,,"CISCI 2008 - Septima Conferencia Iberoamericana en Sistema, Cibernetica e Informatica 5to SIECI 2008, 3er Simposium Internacional en Comunicacion del Conocimiento y Conferencias, CCC 2008 - Memorias",,"33

37",,"1",,"Scopus",,,,,,,,,,,,"Development of an automatic ghost of simplified human circulatory system [Desarrollo de un fantasma automótico del sistema circulatorio humano simplificado]",,"Conference Paper" "42374","123456789/35008",,"Lerma, A., Universidad Nacional Autónoma de Mexico, Mexico, Instituto Nacional de Cardiología Ignacio Chavez, Mexico; Salazar, E., CuCosta, Universidad de Guadalajara, Mexico; Perez-Grovas, H., Instituto Nacional de Cardiología Ignacio Chavez, Mexico; Bermudez, L., Centro Integral de Nefrología, Mexico; Gutiérrez, D., Instituto Mexicano del Seguro Social, Mexico; Reyes-Lagunes, I., Universidad Nacional Autónoma de Mexico, Mexico; Bochicchio, T., Unidad de Hemodiálisis Fresenius Medical Care de Cuernavaca, Mexico; Robles-García, R., Instituto Nacional de Psiquiatría Ramón de la Fuente, Mexico; Lerma, C., Universidad Nacional Autónoma de Mexico, Mexico",,"Lerma, A.

Salazar, E.

Perez-Grovas, H.

Bermudez, L.

Gutierrez, D.

Reyes-Lagunes, I.

Bochicchio, T.

Robles-García, R.

Lerma, C.",,"2012",,"Background Psychological disturbances are common in patients with chronic renal failure (CRF). From the cognitive-behavioral theoretical perspective, they may be due largely to specific cognitive distortions (CD) that are likely to be modified by brief interventions. The aim of this study was to develop and validate an instrument for evaluation of specific CD among patients with CRF. Method A questionnaire with an encouraging phrase for each of five categories of CD (catastrophizing, dichotomous thinking, outside self-worth, negative self-labeling, and perfectionism) was developed. This was applied to 21 patients with CRF (11 women and 10 men). Based on the technique of natural semantic networks, a set of responses (defining words) with greater semantic weight to each sentence stimulus (core network) were identified and a pilot instrument was developed. This one was applied along with Bec?s inventories of anxiety and depression among 255 patients with CRF (118 women, 137 men) attended in four different hospitals. Results The pilot questionnaire was composed of 46 items with greater semantic weight between 343 original defining words. Sixteen items were discarded for lack of ability to discriminate (1), low internal reliability (8) and duplicated in more than one factor (7). The final instrument of 30 items had an internal consistency of 0.93 for the total scale and more than 0.75 in all subscales. The five factors correlated positively and significantly with each other and with symptoms of anxiety and depression. Conclusions The instrument that is presented is a valid and reliable measure to assess five CD associated with depression and anxiety in Mexican patients with CRF. It is suggested as a useful tool for the design and evaluation of cognitive behavioral interventions for depression and anxiety among patients with CRF.",,,,,,,,,"http://hdl.handle.net/20.500.12104/40595","http://www.scopus.com/inward/record.url?eid=2-s2.0-84864795843&partnerID=40&md5=2532fb61285cd37a2811dd5985828f34",,,,,,"3",,"Salud Mental",,"189

194",,"35",,"Scopus

WOS",,,,,,"Assessment; Cognition; Cognitive distortions; Hemodialysis; Renal failure",,,,,,"Development and validation of an instrument for assessing cognitive distortions in patients with end-stage renal disease [Desarrollo y validación de un instrumento para la evaluación de distorsiones cognitivas en pacientes con insuficiencia renal crónica terminal]",,"Article" "42381","123456789/35008",,"Pando Moreno, M., Investigadores del Centro, Univ. de Ciencias de la Salud, Universidad de Guadalajara, México, Mexico, Jardines de San José 44950, Guadalajara, Mexico; Aranda Beltrán, C., Investigadores del Centro, Univ. de Ciencias de la Salud, Universidad de Guadalajara, México, Mexico; Amezcua Sandoval, M.T., Direccion de Educacion Especial, México, Mexico; Salazar Estrada, J.G., Investigadores del Centro, Univ. de Ciencias de la Salud, Universidad de Guadalajara, México, Mexico; Aldrete Rodríguez, M.G., Investigadores del Centro, Univ. de Ciencias de la Salud, Universidad de Guadalajara, México, Mexico",,"Pando Moreno, M.

Aranda Beltran, C.

Amezcua Sandoval, M.T.

Salazar Estrada, J.G.

Aldrete Rodriguez, M.G.",,"2004",,"Objective. To determine the overall development level in children ages 0 to 4 who live in very depressed socioeconomic and cultural conditions. Design. This study is observational, cross-sectional, and prospective. Setting. The study was carried out in four types of communities in the state of Jalisco, Mexico: migrant, indigenous, rural, and irregular urban communities on the outskirts of cities. Participants. 1277 children under the age of 4 years, who live in the communities selected for the study. Principal measurements. Evaluation of the overall development level was based on the Jalisco Scale for Evaluation of Overall Development, which is designed especially for socioeconomically and culturally depressed groups in Mexico. Results. The average development score found in the children was 71.7, which is considered moderately low according to the 3 classification levels of adequate, moderately low, and low. Only 30.4% of the children achieved scores in the adequate category. All the children are considered to live in a high-risk psychosocial environment, which explains the low scores in overall development as evaluated. Conclusions. Differences were observed in some variables within the uniformly low social level of the subjects studied. These differences could be considered as an indication of greater risk within a group that is already high-risk In cases of overall development that is very low, mothers do not perceive that children have any problems at the time the study is being conducted. This could imply that these mothers do not respond proactively to community education and/or health programs that focus on early intervention.",,,,,,"10.1157/13066403",,,"http://hdl.handle.net/20.500.12104/40602","http://www.scopus.com/inward/record.url?eid=2-s2.0-7644221577&partnerID=40&md5=7ca54e6be0fa6244d944582b4fc793ec",,,,,,"5",,"Atencion Primaria",,"244

249",,"34",,"Scopus",,,,,,"Child development; Overall development; Very depressed socioeconomic and cultural conditions",,,,,,"Development of children in socially depressed areas of the state of Jalisco [Desarrollo del niño en zonas socialmente deprimidas del estado de Jalisco]",,"Article" "42376","123456789/35008",,"Durán Puga, N., Biosistemática Ecología y Manejo de Recursos Naturales y agrícolas, Universidad de Guadalajara, Mexico; Ruiz Corral, J.A., INIFAP, Campo Experimental Centro Altos de Jalisco, Mexico; Eguiarte, D.R.G., Biosistemática Ecología y Manejo de Recursos Naturales y agrícolas, Universidad de Guadalajara, Mexico; Hernández, G.N., INIFAP, Región Norte Centro, Campo Experimental la Laguna., Mexico; Ramírez, F.J.P., Biosistemática Ecología y Manejo de Recursos Naturales y agrícolas, Universidad de Guadalajara, Mexico; Rodríguez, S.H.C., Biosistemática Ecología y Manejo de Recursos Naturales y agrícolas, Universidad de Guadalajara, Mexico",,"Duran Puga, N.

Ruiz Corral, J.A.

Eguiarte, D.R.G.

Hernandez, G.N.

Ramirez, F.J.P.

Rodriguez, S.H.C.",,"2011",,"The purposes of the present study were to determine cardinal development temperatures (minimum threshold [base] temperature Tb, optimal temperature To, and maximum threshold [ceiling] temperature Tu) and to identify a method for estimating with accuracy thermal requirements for the planting-emergence (E) stage of 11 forage grasses. One hundred and twenty (120) seeds of each species were planted in containers under controlled conditions in a completely randomized design with three replications at constant temperatures from 15 to 46 °C in the controlled environment chambers at the Instituto Nacional de Investigaciones Forestales agrícolas y Pecuarias (INIFAP) in Guadalajara, Jalisco, México. Cardinal temperatures and thermal requirement were estimated through both bilinear method (MB) and curvilinear method (MC), and their fitness was evaluated by means of direct comparison with development values observed in the controlled environment and through the coefficient of variation of E length expressed as accumulated heat units (UCA). Results showed that MB was best for estimating Tb and To, while MC proved better for estimating Tu. Tb (°C), To (°C), Tu (°C) and UCA values for planting-emergence for each species were: Lolium perenne 9, 31, 41, 80; Festuca arundinacea 10, 31, 41, 78; Hyparrhenia rufa 12, 32, 42, 62; Eragrostis curvula 13, 32, 47, 40; Chloris gayana 13, 31, 47, 40; Melinis minutiflora 13, 31, 43, 50; Pennisetum clandestinum 12, 32, 43, 65; Brachiaria mutica 14, 32, 43, 57; Andropogon gayanus 12, 37, 48, 66; Cynodon dactylon 14, 29, 44, 48; Pennicetum ciliare 13, 30, 42, 61, respectively.",,,,,,,,,"http://hdl.handle.net/20.500.12104/40597","http://www.scopus.com/inward/record.url?eid=2-s2.0-80455174120&partnerID=40&md5=62888c0b9623fddbbc627e1d57c21da3",,,,,,"3",,"Revista Mexicana De Ciencias Pecuarias",,"347

357",,"2",,"Scopus

WOS",,,,,,"Cardinal temperatures; Germination; Grasses; Heat units",,,,,,"Development cardinal temperatures of the planting-emergence stage for 11 forage grasses [Temperaturas cardinales de desarrollo en la etapa siembraemergencia de 11 pastos forrajeros]",,"Article" "42383","123456789/35008",,,,"Orozco Alvarado, Javier",,"1984",,,,,,,,,,"0185-6197","http://hdl.handle.net/20.500.12104/40604",,,,,,,"6",,"Revista del CEPES (Guadalajara)",,"129-132",,,,"CLASE",,,,,,,,"Desarrollo económico",,,,"El " desarrollo rural " y la relacion agricultura-industria",,"journalArticle" "42384","123456789/35008",,"González-Ortiz, L.J., Grupo de Ingeniería Química, Departamento de Química Aplicada, Universidad del País Vasco, Apdo. 1072, 20080 San Sebastián, Spain, Universidad de Guadalajara, Guadalajara, Mexico; Asua, J.M., Grupo de Ingeniería Química, Departamento de Química Aplicada, Universidad del País Vasco, Apdo. 1072, 20080 San Sebastián, Spain",,"Gonzalez-Ortiz, L.J.

Asua, J.M.",,"1995",,"A mathematical model for cluster migration during the development of the particle morphology in emulsion polymerization has been developed. The motion of the clusters is due to the balance between the van der Waals forces and the viscous forces. Several illustrative calculations are presented including systems for which the final equilibrium morphologies were (i) core - shell, (ii) inverted core - shell, and (iii) occluded morphology. " 1995 American Chemical Society.