262 research outputs found
El Superrealismo De Tala, De Gabriela Mistral
No full textEl presente trabajo tiene como antecedente una publicación del mismo autor (Matrimonio de sol y cordillera, 1988), en la cual se buscó dilucidar la presencia de superrealismo en los poemas "Sol del trópico" y "Cordillera" del libro Tala, de Gabriela Mistral. La presencia de elementos superrealistas en las diversas secciones de este volumen mistraliano es abundante y, esta vez, se ha procurado deslindar algunos de estos elementos con cierta atención en estas otras unidades del libro.
In a previous publication of the author ("Matrimonio de Sol y Cordillera" (A Marriage of Sun and Mountain) 1988), there is a attempt to elucidate that "super-realism" found in "Sol del Trópico" (Tropic Sun), and "Cordillera" (Mountain), two poems included in Gabriela Mistral's "Tala". The following essay goes over the same idea of the abundant presence of super-realistic elements in many sections of the aforesaid volume, but this time the author tries to higlight some of these elements in some other sections of the book
El Superrealismo De Tala, De Gabriela Mistral
No full textEl presente trabajo tiene como antecedente una publicación del mismo autor (Matrimonio de sol y cordillera, 1988), en la cual se buscó dilucidar la presencia de superrealismo en los poemas "Sol del trópico" y "Cordillera" del libro Tala, de Gabriela Mistral. La presencia de elementos superrealistas en las diversas secciones de este volumen mistraliano es abundante y, esta vez, se ha procurado deslindar algunos de estos elementos con cierta atención en estas otras unidades del libro.In a previous publication of the author ("Matrimonio de Sol y Cordillera" (A Marriage of Sun and Mountain) 1988), there is a attempt to elucidate that "super-realism" found in "Sol del Trópico" (Tropic Sun), and "Cordillera" (Mountain), two poems included in Gabriela Mistral's "Tala". The following essay goes over the same idea of the abundant presence of super-realistic elements in many sections of the aforesaid volume, but this time the author tries to higlight some of these elements in some other sections of the book.
Tree Rings of Pinus ponderosa and Juniperus virginiana Show Different Responses to Stand Density and Water Availability in the Nebraska Grasslands
No full textChanges in climate, land use and management have led to an increase in woody species encroachment into grasslands, threatening key ecosystem services and resilience. This study uses dendroecological techniques to investigate acclimation strategies of two native woody species, Juniperus virginiana and Pinus ponderosa, to spatial and temporal variability in precipitation and stand density in Nebraska (NE). Two locations in Eastern NE and one in Western NE, were selected and tree cores for ring-width measurements were collected. Stable Isotope ratios of carbon were analysed to investigate water use efficiency (WUE), and stable isotope ratios of oxygen were used to understand stomatal conductance and control. Our results showed trees in dense stands exhibited less intra-specific variability in response to climate and narrower tree rings than sparse open stands, with P. ponderosa being more responsive to density and climate variability than J. virginiana. Populations in the drier Sandhills grasslands of Western NE were more dependent on intra- and inter-annual precipitation and generally more impacted by drought events than those in the East. Eastern NE trees were less limited by drought and displayed lower WIT relative to Western location, even though temperatures were slightly higher, but this was compensated for by the overall higher precipitation levels in the East. Generally, above average winter temperatures were positively correlated with ring widths, while temperature extremes during the growing season were negatively correlated. Although years of extreme drought events were visible in the tree-ring width patterns for both species independent of stand density and location, it seems that once the trees are established and have access to soil moisture, the current climate variability and extremes in NE do not limit or cause a permanent it decline in growth of either species
Spatial, functional and genetic characteristics of field-planted and naturally-regenerated populations of white spruce (Picea glauca (Moench) Voss)
No full textThe spatial structure of white spruce populations was studied in 52 stands. White spruce tree density increased with age in the 200-year chronosequence after fire. Tree height and DBH peaked at about 120 years after fire. Sapling density along the chronosequence after clearcutting exhibited similar pattern to that after fire, but peaked earlier. White spruce seedlings were present in various densities and heights along the chronosequence after fire, producing uneven-aged stands. Seedling regeneration was mostly on the LFH layer (72%) in younger plots and on logs (97%) in old plots. Seedlings in both regeneration types were evenly spaced at a young age. This pattern changed to random and clumped in older stands. Artificially planted clearcuts formed more even-aged stands. Physiological, morphological and growth responses to sun and shade treatments in the greenhouse were examined in white spruce seedlings collected from three naturally-regenerated (N1, N2 and N3) and three field-planted (P1, P2, and P3) stands. Dark respiration and light compensation points declined by 70 and 81% respectively, in shade- compared to sun-acclimated seedlings. Quantum yield, total chlorophyll content, specific leaf area and absolute water content increased by 45, 33, 32 and 50% respectively, in response to shade treatment. Height was not affected by light regime. Fewer and longer secondary branches were noticed in the shade compared to full sun. At light saturation, populations P1 and N3 showed similar photosynthetic responses under both light regimes (around 6 [mu]mol m-2 s-1). Populations P2, P3 and N2 performed more poorly in the sun than in the shade (8.2, 8.7 and 9.1 in shade, versus 5.1, 4.1 and 5.5 in full sun, respectively). Photosynthetic rate in N1 was greater in full sun than in shade (14.7 and 11.1 [mu]mol m -2 s-1, respectively). Differences in physiological responses to light among populations suggest the presence of more than one ecotype. The variation in physiological and morphological parameters within field-planted and naturally-regenerated populations was large, and did not show any obvious differences among populations. RAPD analysis showed abundant polymorphism in all populations. The naturally-regenerated arid the field-planted populations demonstrated similar within and among regeneration-type variation. Of the total genetic variation 82.9% was due to intra-population variation, while inter-population variation and regeneration type accounted for 16.7 and 0.4% of the total variation, respectively. It appears that selection pressure during reforestation was not great enough to cause a significant decline in the genetic diversity of field-planted compared to naturally-regenerated white spruce
Tree-ring stable isotopes show different ecophysiological strategies in native and invasive woody species of a semiarid riparian ecosystem in the Great Plains of the United States
No full textPersistent shifts in riparian vegetation associated with the invasion of introduced Elaeagnus angustifolia and native nonriparian Juniperus virginiana have been reported in the U.S. Great Plains, with significant impacts on ecosystem services. In Nebraska, these species have been expanding into the native Populus deltoides riparian forests along the Republican River. Using dendrochronological data and stable isotope ratios, we examined the annual growth and acclimation strategies of these three species to climatic and streamflow variability. We hypothesized that the ability of invasive species to grow under a wide range of environmental conditions favour vegetation shifts at the expense of native species. Streamflow was the strongest predictor for performance. When accompanied with above-average annual precipitation, streamflow resulted in peak tree-ring widths in P. deltoides. J. virginiana showed less sensitivity, and E. angustifolia showed no response. delta O-18 values did not differ among species, which indicates that all species compete for the same water source. delta C-13 ratios and WUEi were higher in J. virginiana than in P. deltoides and E. angustifolia and increased in all species over time. E. angustifolia and P. deltoides exhibit a strong stomatal control and response to relative humidity relative to J. virginiana, which showed anisohydric stomatal behaviour. Our results show that once established, J. virginiana and E. angustifolia thrive in the understory of P. deltoides using different adaptive and acclimation strategies. Based on current water flow management, which prevents high-flood pulses through the riparian zone, these species will continue to establish and spread throughout the Republican River watershed
Analyse phytosociologique de la chênaie caducifoliée mixte de Tala Kitane (Akfadou, Algérie)
No full textBy a phytosociological study, the author underlines a degradation of the deciduous oaks formation of Tala Kitane (Akfadou) linked to the anthropic action. In that case, this deciduous wood of oaks (Quercus canariensis and Q. afares) correspond to a poor and xeric facies of the subassociation defined by Quezel (1956) in Akfadou forest. The abundance of nitrophilous species in our plant community allows us to individualize a local variant.La chênaie caducifoliée mixte de Tala Kitane correspond à un faciès appauvri plus xérique du Rubo incanescensis-Quercetum canariensis Quézel 1956 em. Aimé et al. 1986 cytisetosum triflori Aimé et al. 1986. Le cortège floristique révèle actuellement une dégradation de l’ambiance sylvatique, suite à une influence anthropozoogène marquée. L’abondance des nitrophytes et des espèces indicatrices de surpâturage permet d’individualiser une variante locale à Fumaria capreolata.Meddour Rachid. Analyse phytosociologique de la chênaie caducifoliée mixte de Tala Kitane (Akfadou, Algérie). In: Ecologia mediterranea, tome 19 n°3-4, 1993. pp. 43-51
Physiological Responses of Four Hazelnut Hybrids to Water Availability in Nebraska
No full textResponses of hazelnut hybrids (88BS, BOX1, Gl7, and GEL502) to water availability (watered and nonwatered) were examined in the field. The study site received 35% of long-term average precipitation between July and September. Photosynthesis (A), stomatal conductance (gs), water potential (Ψ), and specific leaf area were generally lower in the nonwatered than in the watered treatment and exhibited significant seasonal decline, which was accompanied by an increase in water use efficiency (WUE) under both water treatments. Hybrids exhibited different strategies to cope with water availability. The hybrid 88BS was more water conserving, with the most decline in gs the least gradient in Ψ, and the lowest discrimination against 13C than in the remaining hybrids, indicating that 88BS responded to drought by increasing WUE and conserving water. BOXl was more of a water spender, maintaining both higher gs and A, low sensitivity of gs to vapor pressure deficit (VPD) increase, largest gradient in Ψ, and the most negative carbon isotope ratio, indicating a higher capacity to absorb soil water and reach limited resources. GEL502 and G 17 were more affected by water stress than were 88BS or BOXl. We conclude that relatively drought-resistant hazelnut hybrids suitable for the Great Plains can be identified for successful plantations
Fashion Is Freedom How a Girl from Tehran Broke the Rules to Change her World
No full textThe inspiring true story of how courage, a dream, and some needle and thread can change a life forever... Since she was young, Tala Raassi knew her fate lay in fashion. But growing up in her beloved homeland of Iran, a woman can be punished for exposing her hair in public, let alone wearing the newest trends. Despite strict regulations, Tala developed a keen sense of style in backroom cafes and secret parties. She never imagined her behavior would land her in prison, or bring the cruel sting of a whip for the crime of wearing a mini-skirt. Tala's forty lashes didn't keep her down ? they fanned the flames of individuality and inspired her to embrace a new freedom in the United States. As she developed her own clothing label, her exploration into the creative, cut throat community of Western fashion opened her eyes to the ups and downs of hard work, hard decisions, and hard truths. Fashion is Freedom takes us on a journey that crosses the globe, from Colombia to Miss Universe, and inspires women everywhere to be fearless.Front Cover -- Title Page -- Copyright -- Table of Contents -- My Magical Iran -- Chapter 1: The Crime of the Miniskirt -- Chapter 2: With Love There Is No Fear -- Chapter 3: Theater of War -- Chapter 4: Behind Closed Doors -- Chapter 5: The Power of Money -- Chapter 6: Finding Brilliance in Creation -- Chapter 7: Rock-Star Education -- Chapter 8: Tehran High -- Chapter 9: Restrictions Made Me Resourceful -- Chapter 10: Behind Bars -- Don't Get Hopeless, Get Empowered -- Chapter 11: No Change, No Butterflies -- Chapter 12: First Fashion Stride -- Chapter 13: Diamond in the Rough -- Chapter 14: The World's Longest Runway -- Chapter 15: Collecting Passport Stamps -- Chapter 16: The Bare Bones of the Craft -- Door-to-Door -- Chapter 17: Never Trust Capri Pants -- Chapter 18: Fashion in the Haunted Town House -- Chapter 19: Naughty São Paulo -- Chapter 20: God Doesn't Have Partners -- Chapter 21: Starting Over -- Chapter 22: Born to Design -- Chapter 23: Think Big -- Chapter 24: My Mission Published -- Chapter 25: The Lipstick Revolution -- Where Is My Crown? -- Chapter 26: A Golden Opportunity -- Chapter 27: Living the Dream -- Chapter 28: Fake Reality -- Chapter 29: Women in Power -- Chapter 30: Match Made in Hell -- Chapter 31: Life and Lemons -- Chapter 32: The Fragility of Fame -- Chapter 33: Aftermath and Breakdown -- Chapter 34: Free and Fearless -- Acknowledgments -- About the Author -- Back CoverThe inspiring true story of how courage, a dream, and some needle and thread can change a life forever... Since she was young, Tala Raassi knew her fate lay in fashion. But growing up in her beloved homeland of Iran, a woman can be punished for exposing her hair in public, let alone wearing the newest trends. Despite strict regulations, Tala developed a keen sense of style in backroom cafes and secret parties. She never imagined her behavior would land her in prison, or bring the cruel sting of a whip for the crime of wearing a mini-skirt. Tala's forty lashes didn't keep her down ? they fanned the flames of individuality and inspired her to embrace a new freedom in the United States. As she developed her own clothing label, her exploration into the creative, cut throat community of Western fashion opened her eyes to the ups and downs of hard work, hard decisions, and hard truths. Fashion is Freedom takes us on a journey that crosses the globe, from Colombia to Miss Universe, and inspires women everywhere to be fearless.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
Center for Grassland Studies Newsletter, Fall 2007, Volume 13, No. 4
No full textContents: Turfgrass and Landscape Management Degree Program at UNL by Robert (Bob) C. Shearman, Department of Agronomy and Horticulture, UNL New Farm Bill Should Continue Support for Grassland Management by Duane Hovorka, National Wildlife Federation Another Great Nebraska Grazing Conference in 2007! New Ph.D. Specialization in Applied Ecology at UNL by Tala Awada, James Brandle and Larkin Powell, School of Natural Resources, UNL Nebraska Mentoring Program for Graziers by Roger Chesley, Nebraska Grazing Lands Coalition 2003 National Resources Inventory Information Online 2007 CGS Fall Seminar Serie
Center for Grassland Studies Newsletter, Spring 2006, Volume 12, No. 2
No full textEvaluation of Two Grasses for Silvopasture Systems in the Great Plains by Michael E.L. Perry, Tala Awada, Walter Schacht, and Sue Ellen Pegg Department of Agronomy and Horticulture and School of Natural Resources, UNL Research for the Birds: Sandhills Is the Target of Grassland Bird and Grazing Investigation by Larkin Powell, School of Natural Resources, UNL UNL Professional Golf Management Program Scores a First Program Set for 2006 Nebraska Grazing Conference The Nebraska Range Shortcourse Invasive Species Is Theme of Prairie Conference Third National Conference on Grazing Land
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