Semantic Privacy Policies for Service Description and Discovery in Service-Oriented Architecture

Privacy preservation in Service-Oriented Architecture (SOA) is an open problem. This paper focuses on the areas of service description and discovery. The problems in these areas are that currently it is not possible to describe how a service provider deals with information received from a service consumer as well as discover a service that satisfies the privacy preferences of a consumer. There is currently no framework which offers a solution that supports a rich description of privacy policies and their integration in the process of service discovery. Thus, the main goal of this paper is to propose a privacy preservation framework for the areas of service description and discovery in SOA. The framework enhances service description and discovery with the specification and intersection of privacy policies using a base and domain-specific privacy ontologies. Moreover, the framework extends SOA to include roles responsible for implementing a privacy registry as well as mediating the interactions between service consumers and providers and the privacy preservation component

Minimized phytotoxic effects of pre-harvest desiccation with glyphosate in soybean seeds.

ABSTRACT: Pre-harvest desiccation of soybean plants from non-genetically modified cultivars with glyphosate have shown to be detrimental to seed physiological quality by reducing germination and increasing production of abnormal seedlings. On the other hand, many products have been applied to seeds in order to enhance quality such as growth regulators and micronutrients. This study aimed to verify the phytotoxic effects of pre-harvest desiccation with glyphosate on physiological quality of soybean seeds and if they can be overcome or minimized by the application of micronutrients and biostimulant. Seeds from soybean cultivar Conquista were produced with and without desiccation with glyphosate, at the dose 2.0 L ha?1, applied at physiological maturity stage. Right after harvest, seeds were treated with Co + Mo + B + Zn, Co + Mo and biostimulant; a control, with no treatment, was also evaluated. Physiological quality was assessed by tests of germination and seedling development. Data was submitted to variance analysis. Means were compared by the Tukey test (p ≤ 0.05) and analyzed as a 2 × 3 factorial. Dunnet?s test (p ≤ 0.05) was also applied. Negative effects of pre-harvest desiccation with glyphosate on germination of soybean seeds can be overcome by the application of micronutrients Co+Mo. Applying biostimulant to soybean seeds improves seedling development compared with micronutrient treatments, although it does not minimize detrimental effects of desiccation with glyphosate. RESUMO: A dessecação em pré-colheita de plantas de soja de cultivares tradicionais com glyphosate tem-se revelado prejudicial à qualidade fisiológica das sementes, em razão da redução da germinação e do aumento no número de plântulas anormais. Por outro lado, muitos produtos, como reguladores vegetais e micronutrientes, têm sido aplicados às sementes com o objetivo de melhorar sua qualidade. Este estudo objetivou verificar se efeitos fitotóxicos da dessecação em pré-colheita com glyphosate na qualidade fisiológica de sementes de soja podem ser superados ou minimizados pela aplicação de micronutrientes e biostimulante. Sementes de soja da cultivar Conquista foram produzidas com e sem dessecação das plantas com glyphosate, na dose de 2,0 L ha, aplicada na maturidade fisiológica. Logo após a colheita, as sementes foram tratadas com os complexos Co + Mo + B + Zn, Co + Mo e um biostimulante; a testemunha, sem tratamento, também foi avaliada. A qualidade fisiológica foi avaliada por testes de germinação e desenvolvimento de plântulas. Os dados foram submetidos à análise de variância. As médias foram comparadas pelo teste de Tukey (p ≤ 0,05) e analisadas em esquema fatorial 2 × 3. O teste de Dunnet (p ≤ 0,05) também foi aplicado. Os efeitos negativos da dessecação em pré-colheita com glyphosate na germinação das sementes de soja podem ser minimizados com a aplicação de Co + Mo. A aplicação de biostimulante às sementes de soja melhora o desenvolvimento das plântulas, quando comparada com o tratamento com micronutrientes, apesar de não minimizar os efeitos deletérios da dessecação com glyphosate

Dessecação de plantas de soja com glyphosate e qualidade das sementes armazenadas.

Sementes de cultivares convencionais de soja colhidas após dessecação química podem produzir plântulas anormais, com sintomas de fitotoxicidade que podem persistir após o armazenamento. Este trabalho objetivou avaliar a qualidade fisiológica de sementes armazenadas de soja em função da dessecação química das plantas em pré-colheita com glyphosate. Sementes de soja da cultivar convencional Conquista foram produzidas na ausência e presença de dessecação das plantas com glyphosate (na dose de 2,0 L ha-1) no estádio de maturidade fisiológica (R7). A qualidade das sementes foi avaliada logo após a colheita e aos 8 meses de armazenamento em câmara seca quanto ao teor de água, massa, germinação e vigorA qualidade das sementes de soja foi influenciada pela interação entre a aplicação do glyphosate como dessecante e o tempo de armazenamento, com exceção da condutividade elétrica, que variou somente em função do período de análise. A dessecação química das plantas ocasionou diminuição da massa e da qualidade das sementes de soja independente do período de análise; no entanto, os efeitos do armazenamento foram variáveis dependendo da avaliação. A germinação das sementes foi maior após o armazenamento devido à redução na ocorrência de fungos . A massa das sementes e sua germinação após o teste de envelhecimento acelerado foram reduzidas após 8 meses. O desenvolvimento das plântulas, tanto quanto ao comprimento total e de suas partes como a massa da matéria seca, foi reduzido pela aplicação de glyphosate em pré-colheita, mas não variou após o período de armazenamento. A dessecação química das plantas de soja com glyphosate reduz a qualidade fisiológica das sementes de soja e os sintomas de fitotoxicidade persistem mesmo após 8 meses de armazenamento

Pre-harvest desiccation with glyphosate and quality of stored soybean seeds.

ABSTRACT: Seeds from non-genetically modified soybean cultivars harvested after chemical desiccation of plants with glyphosate may produce abnormal seedlings; these may show phytotoxicity symptoms that could persist even after some time of storage due to accumulation of toxic residues. This study aimed to evaluate the quality of stored soybean seeds harvested after chemical desiccation of plants with glyphosate at R7 stage. Seeds from soybean cultivar ?Conquista? were produced with and without desiccation with glyphosate, at the dose 2.0 L ha-1, applied at physiological maturity stage. Seed quality was evaluated right after harvest and after eight months of storage by tests of moisture content, mass, germination and vigor. The experimental design was the completely randomized block with four replications. Data was submitted to variance analysis and means were compared by the Tukey test (p ≤ 0.05) as a 2 x 2 factorial. The results show deleterious effects of glyphosate used as desiccant for early harvest of soybean seeds from conventional cultivars. Accelerating plant senescence leads to production of seeds with lower germination and decreased seedling development, although the percentage of abnormal seedlings is reduced after 8 months of storage possibly due to degradation of toxic residues of glyphosate and/or derivates. RESUMO: Sementes de cultivares convencionais de soja colhidas após dessecação química das plantas com glifosato podem produzir plântulas anormais, com sintomas de fitotoxicidade que podem persistir mesmo após o armazenamento devido ao acúmulo de resíduos tóxicos. Este trabalho objetivou avaliar a qualidade de sementes armazenadas de soja colhidas após dessecação química das plantas com glifosato no estádio R7. Sementes de soja da cultivar Conquista foram produzidas com e sem dessecação das plantas com glifosato, na dose de 2,0 L ha-1, no estádio de maturidade fisiológica. A qualidade das sementes foi avaliada logo após a colheita e aos oito meses de armazenamento quanto ao teor de água, massa, germinação e vigor. O delineamento experimental foi o inteiramente casualizado, com quatro repetições. Os dados foram submetidos à análise de variância e as médias comparadas pelo teste de Tukey (p?0,05), em esquema fatorial 2 x 2. Os resultados mostram efeitos deletérios da aplicação de glifosato utilizado como dessecante para antecipação da colheita de sementes de soja de cultivares convencionais. A aceleração da senescência das plantas resulta na produção de sementes com menor germinação e reduzido desenvolvimento de plântulas, apesar de a porcentagem de plântulas anormais ser reduzida após 8 meses de armazenamento, possivelmente devido à degradação dos resíduos tóxicos de glifosate e/ou seus derivados

Coherence lifetimes of excitations in an atomic condensate due to the thin spectrum

We study the quantum coherence properties of a finite sized atomic condensate using a toy-model and the thin spectrum model formalism. The decoherence time for a condensate in the ground state, nominally taken as a variational symmetry breaking state, is investigated for both zero and finite temperatures. We also consider the lifetimes for Bogoliubov quasi-particle excitations, and contrast them to the observability window determined by the ground state coherence time. The lifetimes are shown to exhibit a general characteristic dependence on the temperature, determined by the thin spectrum accompanying the spontaneous symmetry breaking ground state

Silicon leaf application and physiological quality of white oat and wheat seeds.

Plant nutrition can positively influence quality of seeds by improving plant tolerance to adverse climate. In this context, silicon is currently considered a icronutrient and it is beneficial to plant growth, especially Poaceaes such as white oat and wheat, thereby improving physiological quality of seeds. This study had the objective of evaluating the effects of silicon leaf application on plant tillering, silicon levels and physiological quality of white oat and wheat seeds besides establishing correlations between them. Two experiments were carried out in winter with white oat and wheat. The experimental design was the completely randomized block with eight replications. Treatments consisted of foliar application of silicon (0.8% of soluble silicon, as stabilized orthosilicic acid) and a control (with no application). Silicon levels in leaves were determined at flowering whereas the number of plants and panicles/spikes per area was counted right before harvest. Seed quality was evaluated right after harvest through mass, germination and vigor tests. Data was submitted to variance analysis and means were compared by the Tukey test at a probability level of 5%. Person?s linear correlation test was performed among silicon level in plants, tillering and seed quality data. Silicon leaf application increases root and total length of white oat seedlings as an effect of higher Si level in leaves. Silicon leaf application increases mass of wheat seeds without affecting germination or vigor

Hematological parameters, liver integrity and growth of Nile tilapia fingerlings fed diets supplemented with propolis extract

Aim of study: To assess the effects of propolis extract supplementation in diets for Nile tilapia (Oreochromis niloticus) fingerlings on growth performance, hematological and histological parameters. Area of study: The study was carried out in Paraná (Brazil). Material and methods: The experimental design was based on six treatments including the control diet and propolis supplementation (2%, 4%, 6%, 8% and 10% in the diet). Three hundred Nile tilapia fingerlings, with an initial weight of 0.61± 0.02 g, were distributed in 30 plastic mesh hapas (0.15 m3 each) arranged in a concrete tank of 25 m3 of water volume. The duration of the experimental period was 90 days. Main results: The increasing levels of propolis did not influence the growth performance and proximate composition of fishes. Red blood cells and hematological indices were not affected by propolis supplementation. However, total leukocytes and thrombocytes were higher in fish fed on propolis diets, being significant in fish fed 2% and 8%, and 6% and 8% supplemented diets groups, respectively. Research highlights: The supplementation of propolis alcoholic extract in the range of 2, 4, 6 and 8% in the diet for Nile tilapia fingerlings promote healthier fish with increased immunity in the evaluated culture conditions

Multivisceral intestinal transplantation: Surgical pathology

We report the diagnostic surgical pathology of two children who underwent multivisceral abdominal transplantation and survived for 1 month and 6 months. There is little relevant literature, and diagnostic criteria for the various clinical possibilities are not established; this is made more complicated by the simultaneous occurrence of more than one process. We based our interpretations on conventional histology, augmented with immunohistology, including HLA staining that distinguished graft from host cells in situ. In some instances functional analysis of T cells propagated from the same biopsies was available and was used to corroborate morphological interpretations. A wide spectrum of changes was encountered. Graft-versus-host disease, a prime concern before surgery, was not seen. Rejection was severe in 1 patient, not present in the other, and both had evidence of lymphoproliferative disease, which was related to Epstein-Barr virus. Bacterial translocation through the gut wall was also a feature in both children. This paper documents and illustrates the various diagnostic possibilities.. © 1989 Informa UK Ltd All rights reserved: reproduction in whole or part not permitted