Salinidade dos solos: métodos de pesquisa.

O estudo aborda os seguintes aspectos: diagnostico e caracterizacao dos solos, melhoramento e manejo, resposta das culturas e selecao de culturas tolerantes e utilizacao de agua salina.bitstream/item/142601/1/ID-2820.pd

Solos salinos: diagnóstico e recuperação.

Geologia e geomorfologia; Origem e formação de solos salinos e sódicos; Tipos de sais e solubilidade; Distribuição dos sais; Efeito dos sais e resposta das plantas.bitstream/item/142798/1/ID-49901.pdfTrabalho apresentado no II Curso sobre Métodos de Pesquisa ao Nível de Produtor

Datasets for transcriptomics, q-proteomics and phenotype microarrays of polyphosphate metabolism mutants from Escherichia coli

Indexación: Scopus.Author acknowledges Fondecyt Grants 1120209, 1121170 and Anillo ACT-1107Here, we provide the dataset associated with our research article on the polyphosphate metabolism entitled, “Multi-level evaluation of Escherichia coli polyphosphate related mutants using global transcriptomic, proteomic and phenomic analyses”. By integrating different omics levels (transcriptome, proteome and phenome), we were able to study Escherichia coli polyphosphate mutant strains (Δppk1, Δppx, and Δppk1-ppx). We have compiled here all datasets from DNA microarrys, q-proteomic (Isotope-Coded Protein Labeling, ICPL) and phenomic (Phenotype microarray) raw data we have obtained in all polyP metabolism mutants.http://www.sciencedirect.com/science/article/pii/S2352340917300860?via%3Dihu

Reclamation of saline soils by leaching in the north of Egypt

O presente trabalho permitiu estudar o processo de dessalinização de solos pesados, típicos do delta do rio Nilo (Egito), para determinar parâmetros que permitam predizer requerimentos de lavagem, assim como a efetividade do processo na recuperação de solos salinos. O estudo foi parte do levantamento com fins de melhoramento dos solos na província de Kafr el Sheikh no Egito. A área tem sido já submetida a trabalhos de recuperação (drenagem superficial) nos anos 60, mas o problema não tem sido inteiramente superado e persistem lençol freático alto e teores de salinidade limitantes da produção. O estudo demonstra que, pela natureza dos solos argilosos profundos, a quantidade de água efetiva na lavagem não é mais do que 2 mm/d, mas que esta quantidade permite lavagem eficiente (eficiência de lavagem de 15%), conseguindo-se, além do mais, curvas de dessalinização típicas para esses solos, que permitem o planejamento de um programa de recuperação. Das curvas obtêm-se coeficientes de lavagem entre 0,1 e 0,42.This paper reports the result of leaching trials carried out on heavy soils of Niles' Delta - Egypt, under present drainage conditions, in order to determine the necessary parameters that allow predictions of leaching requirements as well as effectiveness of saline soils reclamation process. The study formed part of the survey for mil improvement purposes at Kafr el Sheikh Governorate, Egypt. That area has already been subject to works (surface drainage) in the sixties, but the problem is notyet overcome and high groundwater tables and salinity persist, limiting crop production. It was found out that because of the nature of those deep clay soils the amount of effective leaching water is not more than 2 mm/d, but it proved to be efficient enough (leaching efficiency found, 15%). Some typical desalination curves for these soils were also obtained, making possible a suitable planning of a land reclamation programme. Leaching coefficients between 0.1 and 0.42 were found

Proposta de pesquisa em: drenagem e recuperação de solos salinos e sódicos no Nordeste do Brasil.

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Características operacionais de um sistema de irrigação por Pivot Central.

Descrição do sistema de irrigação; Características operacionais do sistema da irrigação.bitstream/item/181083/1/FL-07347.pd

Variación morfométrica en el murciélago sturnira magna (chiroptera: phyllostomidae)

Evaluamos variación sexual y geográfica en el murciélago neotropical Sturnira magna (Phyllostomidae) por medio de análisis estadístico univariado y multivariado de medidas craneales, mandibulares y corporales. El dimorfismo sexual es significante. Los machos son más grandes que las hembras.  No encontramos variación geográfica en tamaño y la especie presenta una homogeneidad fenética notable en su extensión geográfica desde el sur de Colombia hasta el norte de Bolivia. Se anota que los ejemplares del Perú Andino son ligeramente más pequeños que los de la Cuenca Amazónica por análisis univariado. El tamaño no está correlacionado ni con factores climáticos (temperatura anual media, precipitación anual media, evapotranspiración relativa), ni con factores geográficos (elevación, latitud relativa).We assessed sexual and geographic variation in the neotropical bat Sturnira maqna (Phyllostomidae) from univariate and multivariate statistical analyses of cranial, mandibular, and body measurements of specimens representative of the geographic range of the species. Sexual dimorphism is significant, and males are larger than females. Cramial, condiloincisive, and mandibular lengths, width across lower canines, length of third and fourth metacarpals, and length of the first phalanx of the third and fifth digits were the main determinants in discriminant analysis to separate the sexes. Analysis of geographic variation in size revealed no distinct geographic pattern. Size was not correlated with mean annual temperature, mean annual precipitation, or potential evapotranspiration, nor with elevation or relative latitude. Cranial, condiloincisive, palatal, mandibular, and upper-toothrow lengths in males and cranial length, mastoid width, and length of the upper toothrow in females were the main determinants in principal component analysis. A notable phentic homogenity in size was found in specimens from the Amazon Basin and from the Amazonian slope of the Andean Cordillera in Perú. Univariate analyses however revealed that in certain measurements S. magna are somewhat smaller in Andean Perú than elsewhere

Capacidad antioxidante en ratas diabéticas rol de la vitamina E

The antioxiclant action of vitamin E was analyzed, the vitamin being administered to diabetic rats, and the changes in glicemia, glycosilated hemoglobin (HbA1c) lipid peroxidation, total antioxidant, albumin and total proteins were evaluated. Four groups of rats were employed: I control II control plus vit E, III diabetics by streptozotocin, IV diabetic plus vit E. After 8 weeks of treatment with insulin (4 U/Kg weight) diabetic animals dosed with vit E improved their glicemia and their HbA1c level decreased. In diabetic and control groups that received vit E lipid peroxidation decreased 25%, compared with those who didn't receive the supplement. These findings suggest that vit E tends to improve glicemia, decrease the HbA1c levels and total antioxidants in diabetic groups.En el presente estudio se analizó el rol antioxidante de la vitamina E, administrada a ratas diabéticas, evaluando los cambios en la glicemia, hemoglobina glicosilada (HbA1c), lipoperoxidación, antioxidantes totales, albúmina y proteínas totales. Se trabajó con 4 grupos de animales de experimentación: I Control, II control más vitamina E (25 mg/día), III Diabético inducidos con estreptozotocina (35 mg/kg) y IV Diabético más vitamina E. Después de 8 semanas de tratamiento, con insulina 4 U/kg de peso observamos que en animales diabéticos con suplemento vitamínico mejora la glicemia y disminuyen los niveles de HbA1c. En los grupos diabéticos y control que recibieron vitamina E disminuyen los niveles de lipoperoxidación en un 25%, comparados con los que no recibieron el suplemento. Nuestros resultados sugieren que la vitamina E tiende a mejorar la glicemia, disminuir la HbA1c y peroxidación lipídica y aumenta los antioxidantes totales en el grupo diabético

Understanding Individual Differences for Tailored Smoking Cessation Apps

Finding ways to help people quit smoking is a high priority in health behavior change research. Recent HCI studies involving technologies using specific quitting techniques such as social support and SMS messaging to help people quit have reported some success. Early studies using computer generated print material report significant success of tailored versus non-tailored material, however, there is limited understanding on what aspects of digitally delivered quitting assistance should be tailored and how. To address this, we have conducted an empirical investigation with smokers to identify perceived importance of different types of help when quitting and the potential role of technology in providing such help. We found that people are highly individual in their approach to quitting and the kind of help they regard as relevant to their situation. Our contribution is a collection of empirically derived themes for tailoring smoking cessation apps to individual quitting needs. Author Keywords Smoking cessation; tailoring; individual differences; healt

Relatório de identificação e reconhecimento.

O problema de drenagem e salinidade: diagnóstico preliminar