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  Subjects -> PSYCHOLOGY (Total: 918 journals)
Showing 1 - 174 of 174 Journals sorted alphabetically
Acción Psicológica     Open Access   (Followers: 3)
Acta Colombiana de Psicología     Open Access   (Followers: 5)
Acta Comportamentalia     Open Access   (Followers: 3)
Acta de Investigación Psicológica     Open Access   (Followers: 3)
Acta Psychologica     Hybrid Journal   (Followers: 25)
Activités     Open Access   (Followers: 1)
Actualidades en Psicologia     Open Access   (Followers: 2)
Ad verba Liberorum : Journal of Linguistics & Pedagogy & Psychology     Open Access   (Followers: 9)
Addictive Behaviors Reports     Open Access   (Followers: 7)
ADHD Attention Deficit and Hyperactivity Disorders     Hybrid Journal   (Followers: 23)
ADHD Report The     Full-text available via subscription   (Followers: 9)
Advances in Experimental Social Psychology     Full-text available via subscription   (Followers: 46)
Advances in Mental Health     Hybrid Journal   (Followers: 77)
Advances in Methods and Practices in Psychological Science     Full-text available via subscription   (Followers: 3)
Advances in Physiotherapy     Hybrid Journal   (Followers: 60)
Advances in Psychology     Full-text available via subscription   (Followers: 64)
Advances in the Study of Behavior     Full-text available via subscription   (Followers: 31)
African Journal of Cross-Cultural Psychology and Sport Facilitation     Full-text available via subscription   (Followers: 5)
Aggression and Violent Behavior     Hybrid Journal   (Followers: 441)
Aggressive Behavior     Hybrid Journal   (Followers: 17)
Aging, Neuropsychology, and Cognition     Hybrid Journal   (Followers: 40)
Ágora - studies in psychoanalytic theory     Open Access   (Followers: 3)
Aletheia     Open Access   (Followers: 1)
American Behavioral Scientist     Hybrid Journal   (Followers: 18)
American Imago     Full-text available via subscription   (Followers: 3)
American Journal of Applied Psychology     Open Access   (Followers: 42)
American Journal of Community Psychology     Hybrid Journal   (Followers: 26)
American Journal of Health Behavior     Full-text available via subscription   (Followers: 24)
American Journal of Orthopsychiatry     Hybrid Journal   (Followers: 5)
American Journal of Psychoanalysis     Hybrid Journal   (Followers: 22)
American Psychologist     Full-text available via subscription   (Followers: 205)
Anales de Psicología     Open Access   (Followers: 2)
Análise Psicológica     Open Access   (Followers: 1)
Análisis y Modificación de Conducta     Open Access   (Followers: 2)
Analitika : Jurnal Magister Psikologi Uma     Open Access  
Analysis     Full-text available via subscription   (Followers: 4)
Annual Review of Clinical Psychology     Full-text available via subscription   (Followers: 72)
Annual Review of Organizational Psychology and Organizational Behavior     Full-text available via subscription   (Followers: 33)
Annual Review of Psychology     Full-text available via subscription   (Followers: 246)
Anuario de Psicología / The UB Journal of Psychology     Open Access   (Followers: 1)
Anuario de Psicología Jurídica     Open Access   (Followers: 1)
Anxiety, Stress & Coping: An International Journal     Hybrid Journal   (Followers: 25)
Applied and Preventive Psychology     Hybrid Journal   (Followers: 16)
Applied Cognitive Psychology     Hybrid Journal   (Followers: 74)
Applied Neuropsychology : Adult     Hybrid Journal   (Followers: 40)
Applied Neuropsychology : Child     Hybrid Journal   (Followers: 22)
Applied Psycholinguistics     Hybrid Journal   (Followers: 19)
Applied Psychological Measurement     Hybrid Journal   (Followers: 20)
Applied Psychology     Hybrid Journal   (Followers: 166)
Applied Psychology: Health and Well-Being     Hybrid Journal   (Followers: 53)
Applied Psychophysiology and Biofeedback     Hybrid Journal   (Followers: 8)
Archive for the Psychology of Religion / Archiv für Religionspychologie     Hybrid Journal   (Followers: 23)
Archives of Clinical Neuropsychology     Hybrid Journal   (Followers: 32)
Archives of Scientific Psychology     Open Access   (Followers: 4)
Arquivos Brasileiros de Psicologia     Open Access   (Followers: 1)
Asia Pacific Journal of Counselling and Psychotherapy     Hybrid Journal   (Followers: 8)
Asia-Pacific Psychiatry     Hybrid Journal   (Followers: 4)
Asian American Journal of Psychology     Full-text available via subscription   (Followers: 5)
Asian Journal of Behavioural Studies     Open Access  
Asian Journal of Business Ethics     Hybrid Journal   (Followers: 9)
Assessment     Hybrid Journal   (Followers: 12)
Attachment: New Directions in Psychotherapy and Relational Psychoanalysis     Full-text available via subscription   (Followers: 16)
Attention, Perception & Psychophysics     Full-text available via subscription   (Followers: 13)
Australasian Journal of Organisational Psychology     Hybrid Journal   (Followers: 8)
Australian and Aotearoa New Zealand Psychodrama Association Journal     Full-text available via subscription  
Australian Educational and Developmental Psychologist, The     Full-text available via subscription   (Followers: 8)
Australian Journal of Psychology     Hybrid Journal   (Followers: 18)
Australian Journal of Rehabilitation Counseling     Full-text available via subscription   (Followers: 4)
Australian Psychologist     Hybrid Journal   (Followers: 11)
Autism Research     Hybrid Journal   (Followers: 38)
Autism Research and Treatment     Open Access   (Followers: 29)
Autism's Own     Open Access   (Followers: 2)
Autism-Open Access     Open Access   (Followers: 6)
Avaliação Psicológica     Open Access  
Avances en Psicologia Latinoamericana     Open Access   (Followers: 1)
Aviation Psychology and Applied Human Factors     Hybrid Journal   (Followers: 19)
Balint Journal     Hybrid Journal   (Followers: 3)
Barbaroi     Open Access  
Basic and Applied Social Psychology     Hybrid Journal   (Followers: 37)
Behavior Analysis in Practice     Full-text available via subscription   (Followers: 8)
Behavior Analysis: Research and Practice     Full-text available via subscription   (Followers: 2)
Behavior Analyst     Hybrid Journal   (Followers: 4)
Behavior Modification     Hybrid Journal   (Followers: 10)
Behavior Research Methods     Hybrid Journal   (Followers: 21)
Behavior Therapy     Hybrid Journal   (Followers: 50)
Behavioral Development Bulletin     Full-text available via subscription  
Behavioral Interventions     Hybrid Journal   (Followers: 10)
Behavioral Neuroscience     Full-text available via subscription   (Followers: 54)
Behavioral Sciences & the Law     Hybrid Journal   (Followers: 23)
Behavioral Sleep Medicine     Hybrid Journal   (Followers: 7)
Behaviormetrika     Hybrid Journal  
Behaviour     Hybrid Journal   (Followers: 12)
Behaviour Change     Full-text available via subscription   (Followers: 12)
Behaviour Research and Therapy     Hybrid Journal   (Followers: 18)
Behavioural and Cognitive Psychotherapy     Hybrid Journal   (Followers: 138)
Behavioural Processes     Hybrid Journal   (Followers: 8)
Biofeedback     Hybrid Journal   (Followers: 4)
BioPsychoSocial Medicine     Open Access   (Followers: 7)
BMC Psychology     Open Access   (Followers: 17)
Body, Movement and Dance in Psychotherapy: An International Journal for Theory, Research and Practice     Hybrid Journal   (Followers: 10)
Boletim Academia Paulista de Psicologia     Open Access  
Boletim de Psicologia     Open Access  
Brain Informatics     Open Access  
British Journal of Clinical Psychology     Full-text available via subscription   (Followers: 149)
British Journal of Developmental Psychology     Full-text available via subscription   (Followers: 37)
British Journal of Educational Psychology     Hybrid Journal   (Followers: 35)
British Journal of Health Psychology     Full-text available via subscription   (Followers: 45)
British Journal of Mathematical and Statistical Psychology     Full-text available via subscription   (Followers: 21)
British Journal of Psychology     Full-text available via subscription   (Followers: 60)
British Journal of Psychotherapy     Hybrid Journal   (Followers: 68)
British Journal of Social Psychology     Full-text available via subscription   (Followers: 33)
Burnout Research     Open Access   (Followers: 8)
Cadernos de psicanálise (Rio de Janeiro)     Open Access  
Cadernos de Psicologia Social do Trabalho     Open Access  
Canadian Art Therapy Association     Hybrid Journal  
Canadian Journal of Behavioural Science     Full-text available via subscription   (Followers: 5)
Canadian Journal of Experimental Psychology     Full-text available via subscription   (Followers: 15)
Canadian Psychology / Psychologie canadienne     Full-text available via subscription   (Followers: 14)
Case Studies in Sport and Exercise Psychology     Hybrid Journal   (Followers: 1)
Cendekia : Jurnal Kependidikan dan Kemasyarakatan     Open Access  
Child Development Perspectives     Hybrid Journal   (Followers: 29)
Child Development Research     Open Access   (Followers: 17)
Ciencia Cognitiva     Open Access   (Followers: 2)
Ciencia e Interculturalidad     Open Access   (Followers: 1)
Ciências & Cognição     Open Access  
Ciencias Psicológicas     Open Access  
Clínica y Salud     Open Access  
Clinical Medicine Insights : Psychiatry     Open Access   (Followers: 10)
Clinical Practice in Pediatric Psychology     Full-text available via subscription   (Followers: 11)
Clinical Psychological Science     Hybrid Journal   (Followers: 13)
Clinical Psychologist     Hybrid Journal   (Followers: 18)
Clinical Psychology & Psychotherapy     Hybrid Journal   (Followers: 72)
Clinical Psychology and Special Education     Open Access   (Followers: 3)
Clinical Psychology Review     Hybrid Journal   (Followers: 41)
Clinical Psychology: Science and Practice     Hybrid Journal   (Followers: 22)
Clinical Schizophrenia & Related Psychoses     Full-text available via subscription   (Followers: 9)
Coaching : Theorie & Praxis     Open Access  
Coaching Psykologi - The Danish Journal of Coaching Psychology     Open Access   (Followers: 1)
Cogent Psychology     Open Access  
Cógito     Open Access  
Cognition & Emotion     Hybrid Journal   (Followers: 43)
Cognitive Behaviour Therapist     Hybrid Journal   (Followers: 13)
Cognitive Behaviour Therapy     Hybrid Journal   (Followers: 17)
Cognitive Neuropsychology     Hybrid Journal   (Followers: 35)
Cognitive Psychology     Hybrid Journal   (Followers: 71)
Cognitive Research : Principles and Implications     Open Access   (Followers: 3)
Consciousness and Cognition     Hybrid Journal   (Followers: 32)
Construção Psicopedagógica     Open Access  
Consulting Psychology Journal : Practice and Research     Full-text available via subscription   (Followers: 4)
Contagion : Journal of Violence, Mimesis, and Culture     Full-text available via subscription   (Followers: 7)
Contemporary Educational Psychology     Hybrid Journal   (Followers: 26)
Contemporary School Psychology     Hybrid Journal   (Followers: 4)
Contextos Clínicos     Open Access  
Counseling Outcome Research and Evaluation     Hybrid Journal   (Followers: 12)
Counseling Psychologist     Hybrid Journal   (Followers: 16)
Counseling Psychology and Psychotherapy     Open Access   (Followers: 11)
Counselling and Psychotherapy Research : Linking research with practice     Hybrid Journal   (Followers: 26)
Counselling and Values     Hybrid Journal   (Followers: 3)
Counselling Psychology Quarterly     Hybrid Journal   (Followers: 11)
Couple and Family Psychoanalysis     Full-text available via subscription   (Followers: 1)
Couple and Family Psychology : Research and Practice     Full-text available via subscription   (Followers: 6)
Creativity Research Journal     Hybrid Journal   (Followers: 24)
Creativity. Theories - Research - Applications     Open Access   (Followers: 5)
Criminal Justice Ethics     Hybrid Journal   (Followers: 8)
Cuadernos de Neuropsicología     Open Access   (Followers: 1)
Cuadernos de Psicologia del Deporte     Open Access  
Cuadernos de Psicopedagogía     Open Access  
Cultural Diversity and Ethnic Minority Psychology     Full-text available via subscription   (Followers: 15)
Cultural-Historical Psychology     Open Access   (Followers: 2)
Culturas Psi     Open Access  
Culture and Brain     Hybrid Journal   (Followers: 4)
Current Addiction Reports     Hybrid Journal   (Followers: 12)
Current Behavioral Neuroscience Reports     Hybrid Journal   (Followers: 2)
Current Directions In Psychological Science     Hybrid Journal   (Followers: 56)
Current Opinion in Behavioral Sciences     Hybrid Journal   (Followers: 3)
Current Opinion in Psychology     Hybrid Journal   (Followers: 6)
Current Psychological Research     Hybrid Journal   (Followers: 14)
Current Psychology     Hybrid Journal   (Followers: 17)
Current psychology letters     Open Access   (Followers: 2)
Current Research in Psychology     Open Access   (Followers: 20)
Cyberpsychology, Behavior, and Social Networking     Hybrid Journal   (Followers: 16)
Decision     Full-text available via subscription   (Followers: 4)
Depression and Anxiety     Hybrid Journal   (Followers: 21)
Depression Research and Treatment     Open Access   (Followers: 15)
Development and Psychopathology     Hybrid Journal   (Followers: 8)
Developmental Cognitive Neuroscience     Open Access   (Followers: 18)
Developmental Neuropsychology     Hybrid Journal   (Followers: 20)
Developmental Psychobiology     Hybrid Journal   (Followers: 9)
Developmental Psychology     Full-text available via subscription   (Followers: 47)
Diagnostica     Hybrid Journal   (Followers: 2)
Dialectica     Hybrid Journal   (Followers: 1)
Discourse     Full-text available via subscription   (Followers: 9)
Diversitas: Perspectivas en Psicologia     Open Access  
Drama Therapy Review     Hybrid Journal   (Followers: 2)
Dreaming     Full-text available via subscription   (Followers: 11)
Drogues, santé et société     Full-text available via subscription  
Dynamics of Asymmetric Conflict: Pathways toward terrorism and genocide     Hybrid Journal   (Followers: 15)
Eat, Sleep, Work     Open Access  
Ecopsychology     Hybrid Journal   (Followers: 8)
ECOS - Estudos Contemporâneos da Subjetividade     Open Access  

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Journal Cover Ciencia e Interculturalidad
  [1 followers]  Follow
  This is an Open Access Journal Open Access journal
   ISSN (Print) 9-771997-9230009
   Published by Latin America Journals Online Homepage  [26 journals]
  • Productos botánicos para el manejo del ácaro blanco (Polyphagotarsonemus
           latus, Banks.) (Acarina; Tarsonemidae), en chiltoma (Capsicum annuum L.),
           en Masaya, Nicaragua

    • Authors: Allan Ray Taylor Tórrez, Enrique Cordón Suárez
      Pages: 78 - 93
      Abstract: Con el objetivo de evaluar cinco productos botánicos para el manejo del ácaro blanco de la chiltoma, se realizó un estudio en el Municipio de Tisma, Masaya en el período comprendido de Septiembre a Noviembre del año 2014. Las alternativas evaluadas fueron: Eucalipto, Neem, Crisantemo, Madero Negro y Chile+Ajo+Jabon en comparación con el testigo que fue solamente aplicación de agua. Las variables evaluadas fueron: Número de ácaro blanco por planta, porcentaje de severidad del daño de ácaro blanco por planta, además de algunas variables económicas como el rendimiento en kg/ ha por tratamiento evaluado, análisis de presupuesto parcial, análisis de dominancia y tasa de retorno marginal. Los resultados obtenidos en el estudio determinan que los tratamientos Madero Negro y chile+ajo+jabon fueron los que presentaron el mejor efecto de control del ácaro blanco, los mejores rendimientos comerciales lo obtuvieron los tratamientos madero negro y chile+ajo+jabon, las mejores tasas de retorno marginal fueron obtenidas en los tratamientos madero negro seguido del chile+ajo+jabon.Revista Científica Vol. 15. Nº 24, p. 13-20 mayo 2015
      PubDate: 2017-08-27
      DOI: 10.5377/rci.v20i1.4855
      Issue No: Vol. 20, No. 1 (2017)
  • Gobernanza forestal en el territorio Twi Waupasa, Costa Caribe Norte de

    • Authors: Carlos Mendoza Blanco, Isay Talavera Lacayo, Keith Narváez Ismael, Enrique Cordón Suárez, Ronnie de Camino Velozo
      Pages: 94 - 107
      Abstract: El estudio se realizó con el n de analizar la gobernanza forestal en el territorio Twi Waupasa, Municipio de Puerto Cabezas, Región Autónoma de la Costa Caribe Norte de Nicaragua. Se establecieron grupos focales y entrevistas individuales lo cual permitió identificar un conjunto de limitantes y problemas que interrumpen la gobernanza forestal; los conflictos internos entre comunidades vecinas, la mala distribución de los beneficios económicos, la invasión de tierra por colonos, el debilitamiento de las estructuras tradicionales por partidos políticos y la inexperiencia en el Manejo Forestal Comunitario, son situaciones que entorpecen la gobernanza. Para ello se ofrece un modelo de gobernanza forestal construido desde la perspectiva de los actores locales. Abstract The study was conducted in order to analyze forest governance in Twi Waupasa territory, Puerto Cabezas Municipality, Autonomous Region of the North Caribbean Coast of Nicaragua. Focal groups and individual interviews were established which allowed identifying a set of constraints and problems that disrupt forest governance; Internal conflicts between neighboring communities, poor distribution of economic benefits, land invasions by settlers, weakening of traditional structures by political parties, and inexperience in Community Forest Management are situations that hinder governance. To this end, a forest governance model built from the perspective of local actors is offered. 
      PubDate: 2017-08-27
      DOI: 10.5377/rci.v20i1.4856
      Issue No: Vol. 20, No. 1 (2017)
  • Germinación del coco con tres tipos de cortes en Sandy Bay Sirpi,
           Costa Caribe Sur de Nicaragua

    • Authors: Jhovany Jhoel Hooker Medina, Winston Walton James Inglish, Xiomara Treminio Luna
      Pages: 109 - 121
      Abstract: Se ha evaluado la germinación del coco criollo (Cocos nucifera), utilizando 3 tipos de cortes (horizontal, transversal, vertical), en Sandy Bay Sirpi, municipio Desembocadura del Río Grande, el experimento fue unifactorial con un Diseño Experimental de Bloques Completamente al Azar (BCA), con 4 tratamientos y 4 repeticiones. Las variables evaluadas: tiempo promedio, porcentaje de germinación y de mortalidad entre los tratamientos y susceptibilidad al ataque de plagas y enfermedades, características morfológicas (tamaño embrión, grosor de hojas, tamaño raíces), las variables se sometieron a un análisis de varianza con un 95 por ciento de confianza. El mayor porcentaje de germinación de las nueces lo presento corte vertical con un porcentaje del 95, el segundo de corte transversal 83, seguido del corte horizontal 76 y testigo con 50: todos evaluados con una muestra de 60 nueces con los diferentes tratamientos. En índice de mortalidad a los 135 días de establecidos lo obtuvo el T4 (corte vertical) con el porcentaje del 5; seguido por T3 (corte transversal) con 16; T2 (corte horizontal) con 23; y, T1 (testigo) con 50. Respecto a la morfología el T4 obtuvo mejores promedios, tamaño del embrión (53.71 cm), grosor de hojas (5.72 cm), tamaño de raíces (29.55 cm), seguido el T3, T2 y T1. Se determinó que el mejor tratamiento para acelerar la germinación de la variedad del coco criollo Alto del Atlántico, corte vertical (T4), presentó mejores características y mayor cantidad de nueces germinadas en menos tiempo promedio.AbstractThe germination of the native coconut (Cocos nucifera) was evaluated using 3 types of cuts (horizontal, transversal, vertical) at Sandy Bay Sirpi, Rio Grande estuary municipality, the experiment was univariate with an Experimental Block Design (BCA), with 4 treatments and 4 replicates. The variables evaluated: mean time, percentage of germination and mortality among treatments and susceptibility to attack of pests and diseases, morphological characteristics (embryo size, leaf thickness, root size), variables were subjected to an analysis of variance with a 95 percent confidence. The highest percentage of germination of the nuts was presented by vertical cut with a percentage of 95, the second of cross section 83, followed by the horizontal cut 76 and control with 50: all of which were evaluated with a sample of 60 nuts with the different treatments. In the index of mortality at the 135 days of establishment, was obtained by T4 (vertical cut) with the percentage of 5; Followed by T3 (cross-section) with 16; T2 (horizontal cut) with 23; And T1 (control) with 50. Regarding the morphology T4 obtained better averages, embryo size (53.71 cm), leaf thickness (5.72 cm), root size (29.55 cm), followed by T3, T2 and T1. It was determined that the best treatment to accelerate the germination of the Atlantic Alto Creole coconut variety, vertical cut (T4), showed better characteristics and more germinated nuts in less average time. 
      PubDate: 2017-08-27
      DOI: 10.5377/rci.v20i1.4857
      Issue No: Vol. 20, No. 1 (2017)
  • Manejo de pastizales en sistema de producción ganaderos de Nueva Guinea,
           Costa Caribe Sur de Nicaragua

    • Authors: Carlos Álvarez Amador, Wilberto Antonio Cruz Pastora
      Pages: 122 - 139
      Abstract: Esta investigación se encaminó a la caracterización del manejo de las pasturas que hacen los ganaderos de Nueva Guinea, Nicaragua. El enfoque de la investigación fue cuantitativo, tipo descriptiva, se tomó una muestra de 100 ganaderos. La información fue recolectada a través de encuestas, y por las características de algunas variables también se hizo uso de formatos de recolección y medición de datos. El procesamiento de la información se realizó con el paquete estadístico SPSS versión 15,0. Se encontró una diversidad representativa de especies de pastos, tanto de pastoreo continuo como de corte, con una predominancia de retana (Ischaemum ciliare) y Brachiaria brizantha cv. Marandú, estos en su mayoría con un manejo poco tecnificado, pues los productores (mujeres y hombres) aún no son conscientes que las áreas de pasturas son un cultivo y deben manejarse como tal, el período de ocupación de las pasturas promedia 7 días, con una carga animal de 2,5 cabezas de ganado/manzana y un periodo de descanso de 23 días, con niveles de degradación que van desde leve hasta severo. AbstractThis research was aimed at the characterization of pasture management made by cattle farmers in Nueva Guinea, Nicaragua. The research approach was quantitative, descriptive type, a sample of 100 farmers was taken. The information was collected through surveys, and the characteristics of some variables. Data collection and measurement formats were also used. The information processing was performed with the statistical package SPSS version 15.0. A representative diversity of pasture species was found, both continuous pasture and cut, with a predominance of retana (Ischaemum ciliare) and Brachiaria brizantha cv. (Women and men) are still not aware that pasture areas are crop and should be managed as such, the period of occupation of the pastures averages 7 days, with an animal load of 2.5 livestock per block and a rest period of 23 days, with levels of degradation ranging from mild to severe. 
      PubDate: 2017-08-27
      DOI: 10.5377/rci.v20i1.4858
      Issue No: Vol. 20, No. 1 (2017)
  • Efecto de la fertilización completa y cálcica sobre el crecimiento
           inicial de plantaciones de teca (Tectona gradis Linn F.), Siuna, RACN,

    • Authors: Álvaro Benavides-González, Juan Carlos Moran-Centeno, Gerol Enrique Cruz
      Pages: 1 - 5
      Abstract: En Nicaragua, la demanda de madera en cantidad y calidad ha reducido la cobertura forestal, por tanto, el establecimiento de plantaciones forestales representa una actividad económica de importancia para el desarrollo de la Costa Caribe Norte. Esta investigación se realizó en el municipio de Siuna, Región Autónoma del Caribe Norte (RACN) en la finca El Waspado, empresa Norteak HEMCONIC en plantaciones de teca (Tectona grandis Linn F.). El objetivo fue evaluar el efecto de la fertilización completa y cálcica sobre el porcentaje de sobrevivencia de plantas, altura de la planta (cm), diámetro del tallo a la altura del pecho (cm), área basal (m2), volumen (m3), vigor de planta y forma del fuste. Se utilizó un diseño de Bloques Completamente al Azar (BCA) con tres réplicas y los siguientes arreglos de fertilización: 40 g de 15-15-15 (completo), 40 g de 15-15-15 + 454 g de CaCO3 (completo + cal), 40 g de Tecaplex (Tecaplex), 40 g de Tecaplex + 454 g de CaCO3 (Tecaplex + cal) y, 454 g de CaCO3 (cal), como control. A partir del tercer mes, la dosis se duplicó a 80 gramos por planta en cada arreglo de fertilización. Las variables de crecimiento fueron consideradas en un análisis de varianza (ANDEVA) y LSD (∞=0.05). La altura de planta, diámetro y volumen presentaron diferencias estadísticas en los tratamientos a partir de los 12 meses después de haberse establecido la plantación, sobresaliendo las aplicaciones de la formulación completa y la aplicación de cal.Revista Científica Vol. 15. Nº 24, p. 1-5 mayo 2015
      PubDate: 2016-10-23
      DOI: 10.5377/calera.v15i24.2931
      Issue No: Vol. 15, No. 24 (2016)
  • Crecimiento, acumulación de biomasa seca y nutrientes en los frutos de
           café (Coffea arabica L.) variedad Pacas, Masatepe, Nicaragua

    • Authors: Victor Aguilar-Bustamante, Rodolfo Munguía-Hernández, Adán Chavarría-Rivera, Nadia Calderón-Guido
      Pages: 6 - 12
      Abstract: De abril a diciembre de 2012, en un ensayo ya establecido se realizó un estudio en el cultivo de café variedad pacas, con el objetivo de determinar las curvas de crecimiento, acumulación de biomasa seca y acumulación de nutrientes (N, P, K, Ca y Mg) en los frutos de café uva. El ensayo fue establecido en el año 2000 en el Jardín Botánico hoy conocido como Centro Nacional de Educación y Cooperativismo (CENECCOP), Masatepe, Nicaragua. Se seleccionaron cuatro parcelas grandes con combinación de árboles de sombra maderables y de servicio y una parcela a pleno sol. Los tratamientos en estudio fueron a) Inga laurina y Simaruba glauca, b) Samanea saman y Tabebuia rosea, c) Samanea saman e Inga laurina, d) Tabebuia rosea y Simaruba glauca y e) una parcela a pleno sol. Las parcelas fueron distribuidas en un diseño de bloques completos al Azar (BCA). Las variables evaluadas en los frutos de café fueron diámetro polar, diámetro ecuatorial y peso seco. Los frutos se secaron en el horno a 70 °C y posteriormente se utilizó un molino Foss Tecator Cyclotec para obtener una muestra fina. De la muestra molida de los frutos, en el laboratorio de suelo y agua de la UNA se determinaron las concentraciones de N, P, K, Ca y Mg. Los datos fueron colectados cada 30 días. Para el análisis estadístico se utilizó SAS 9.1. Las curvas de crecimiento del fruto y la acumulación de peso seco se ajustaron a regresiones no lineales simples y dobles exponenciales. Se realizó una correlación entre el diámetro polar y diámetro ecuatorial de los frutos dando un coeficiente de determinación r de 98% (Pr>F= 0.0001). Para el ajuste de la curva de aumento de peso seco se utilizó el modelo Probit normal. El mayor crecimiento de los frutos se dio durante los primeros 90 días y la mayor acumulación de nutrientes se dio entre los 90 y 210 días. La combinación de árboles leguminosos presentó el diámetro polar y ecuatorial más alto. También la acumulación de biomasa seca fue mayor en el tratamiento con sombra de leguminosas.Revista Científica Vol. 15. Nº 24, p. 6-12 mayo 2015
      PubDate: 2016-10-23
      DOI: 10.5377/calera.v15i24.2932
      Issue No: Vol. 15, No. 24 (2016)
  • Chemical Composition and Bioactivity of Essential Oil of Ageratina
           adenophora from Bhaktapur District of Nepal

    • Authors: Bimala Subba, Ram Chandra Kandel
      Pages: 78 - 86
      Abstract: The essential oil of Ageratina adenophora locally call Banmara was analyzed by GC–MS. A total of 45 volatile compounds was identified and torreyol (16.8%) was the major component in oil. The sesquiterpene fraction was higher than the monoterpene one. The essential oil showed significant antibacterial activity against both gram positive (Klebsiella pneumoniae and Staphylococcus aureus) and gram negative (Escherichia coli and Proteus vulgaris) bacteria.
      DOI : of Nepal Chemical Society Vol. 30, 2012 Page: 78-86 Uploaded date: 12/18/2013 
      PubDate: 2013-12-17
      Issue No: Vol. 30 (2013)
  • Highly concentrated emulsion with a cubic liquid crystal as the external
           phase: characterization and obtaining of meso/macroporous material

    • Authors: E. Santamaría, M. Cortés, A. Maestro, M. Porras, J. M. Gutiérrez, C. González
      Pages: 87 - 96
      Abstract: High internal phase ratio emulsions (HIPRE) or highly concentrated emulsions are characterized by their large internal phase volume.The nature and concentration of surfactant affects several features of the final emulsion, such as stability, droplet size and structure of the external phase. Therefore, an ordered external mesophase (structure of liquid crystal) can be obtained. The present work studies the influence of composition and preparation variables on the final properties of HIPRE with an external phase formed by a bicontinuous cubic liquid crystal. The studied outputs variables were droplet size, stability and rheological parameters as yield stress, viscosity at a fixed shear rate and the plateau value of the storage modulus. O/W HIPREs were prepared with a decane/brij 35/water system. Once the emulsions were characterized the meso/macroporous material was obtained. In order to prepare the materials, the emulsions were formed by incorporating the catalyst of the reaction (HCl) in the continuous phase. When the emulsions were formed, tetraethylorthosilicate (TEOS) was added as a silica source In order to optimize the production process a study of reutilization and recovery of some of the raw materials (i.e: the surfactant and the EtOH used) was done.
      DOI : of Nepal Chemical Society Vol. 30, 2012 Page:  87-96 Uploaded date: 12/19/2013   
      PubDate: 2013-12-18
      Issue No: Vol. 30 (2013)
  • The chemical compositions of Rhododendron arboreum,

    • Authors: Roshani M. Shrestha, Narendra pratapsingh Budhathoki
      Pages: 97 - 106
      Abstract: Rhododendron arboreum, family Ericaceae, is a medium size tree 7-14m height or shrub, Widely distributed in Nepal all along sub-tropical and temperate regions from 1200-3300m, the Rhododendron arboreum is known as ‘Gunras’ in Nepali. R. arboreum was declared of Nepal’s national flower in 1962 by government of Nepal. The chemical compositions of the wood (stem) Of Rhododendron arboreum has been investigated on the basis of useful methods of Tappi & ASTM. The main chemical compositions were:-Ash content (0.75%), Extractives (4.39%), Hollocelluloses (69.82%), Hemicelluloses (22%), alpha-celluloses (47.98%), Pentosans (16.84%), & Lignins (24.88%). The Lignins were analyzed by UV &IR. Similarly, the fatty acid compositions of extractives were analyzed by GC/MS. The main fatty acid compositions were: Butanoic acid, Pentanoic acid, 4-Heptenoic acid, & 8-Nonynoic acid in extractives. The solubility of wood in various solvents is a measure of extraneous components content. The solubility of different solvents were: - in cold water (7.02%), Hot water (8.47%), & 1% NaOH (19%). The high percentage of alpha celluloses in chemical compositions shows prospective use as a raw material for paper production along with Danphebholua (Lokta) in cottage industries of Nepal.
      DOI : of Nepal Chemical Society Vol. 30, 2012 Page:  97-106 Uploaded date: 12/19/2013   
      PubDate: 2013-12-18
      Issue No: Vol. 30 (2013)
  • Relaxations in relation to Liquid Crystalline Formation and Glass
           Transition for Comb-like Polymer: Structural Relaxation as expressed by
           Entropy Model and Activation Energy Spectrum

    • Abstract: This study demonstrates that the modelling approach for the kinetic phenomenon of glass transition is effective to examine the relaxation. In the enthalpy relaxation of poly(cyanobiphenyl-yloxy) alkyl acrylate, the decrease in enthalpy was measured as a function of ageing time and ageing temperature. Obtained data was analysed at first with the activation energy spectrum (AES) model, and next, with the framework of the entropy model which follows the evolution of the configurational entropy of the sample during the whole thermal history in the experiment. The prediction of DSC curve based on the result of analysis for the glass transition will be presented. AES model gives information about thermally activated processes which are available to contribute to observed enthalpy changes against the thermal history. The activated processes are relevant to the rearrangement of molecules. The rearrangement corresponds to the structural changes of polymer chain which can be observed in our study as the change in optical texture, known as the coarsening dynamics of nematic domain for the liquid crystalline materials. The analysis for the coarsening is also shown to elucidate the specific feature of physical parameter.
      DOI : of Nepal Chemical Society Vol. 30, 2012 Page:  107-110 Uploaded date: 12/19/2013 
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