Enhanced superchannel transmission using phase conjugation

We demonstrate polarisation insensitive dual-band optical phase conjugation for multiple 400Gbit/s optical superchannels using a Raman amplified transmission link with a realistic span length of 75km. The resultant increase in transmission distance is confirmed analytically.

The impact of phase conjugation on the nonlinear-Shannon limit:the difference between optical and electrical phase conjugation

We show that optical and electrical phase conjugation enable effective nonlinear compensation, The impact of polarization mode dispersion and finite processing bandwidth on the ultimate limits are also considered.

4 Tb/s transmission reach enhancement using 10 × 400 Gb/s super-channels and polarization insensitive dual band optical phase conjugation

In this paper, we experimentally demonstrate the benefit of polarization insensitive dual-band optical phase conjugation for up to ten 400 Gb/s optical super-channels using a Raman amplified transmission link with a realistic span length of 75 km. We demonstrate that the resultant increase in transmission distance may be predicted analytically if the detrimental impacts of power asymmetry and polarization mode dispersion are taken into account.

Processo de cuidar de um centro de tratamento oncológico

The objective was to understand the process of caring for a center for cancer treatment from the perspective of nurses and patients. This is a qualitative research, xploratory and descriptive, performed in a cancer treatment center in Natal / RN / Brazil. Data collection occurred between August 2013 and February 2014, being effected by means of two techniques: photographic record and projective interviews with nurses and patients. Social actors included in the study were ten professional nursing and ten patients admitted to the surgical department of the institution. The criteria used for inclusion of professionals were: be professional in the field of nursing, being an employee of the hospital, to be inserted in the scale of nurses of the institution at the time of data collection. For the patients were included who had preserved their cognitive abilities and who were hospitalized and at any stage of treatment. We used content analysis proposed by Bardin, for the analysis of material collected during projective interview. The research followed the ethical and legal principles that govern scientific research on human beings, being conducted by the project approval by the Research Ethics Committee of the Northern League Against Cancer Riograndense with 295 673 and look CAAE 16104313.0.0000.5293. Referring to nurses, they demonstrated different views about care, which sprouted from a holistic, multidisciplinary approach and welcoming, as well as linked to the performance of procedures and compliance with the requirements technicality. Furthermore, these subjects also showed that care unfolds through the actions of management in carrying out the records in the humanization of care by meeting the needs of the patient and ambience. Front of patients, it is noteworthy that, for them, care happens through attitudes of caring and professional approach, and by performing procedures, being mentioned as a careless lack of structure of the institution and the discomfort caused by this condition factors. It was evident also that the actors involved in the care, the perception of professionals and patients, are represented by nurses, doctors, psychologists, nutritionists, as well as kitchen assistants and cleaners; beyond family companion, the individual himself as responsible for their care and volunteer caregiver. In this opportunity, it is concluded 9 that an understanding of care from the perspective of nurses and patients involves broad issues ranging from perceptions of care that embraces a dynamic complex elements and attitudes imbued with meanings, in which those involved can assume both the role of carers as care beings, even a carefully tied to prescribed routines and performing procedures. Thus, the findings described refer to reflections on the care provided to cancer patients and whether this, in fact, translates principles of a humane practice

Processo de cuidar de crianças hospitalizadas com câncer

The objective was to understand the process of care in the perception of hospitalized children with cancer. This is a descriptive study of qualitative approach. Data were collected between the months of October 2013 and January 2014, through photographic records and semi-structured interview consisting of questions relating to the identification of age, sex, diagnosis and length of stay and a script of questions related to the recorded pictures. Eight children were included aged between six and twelve who were admitted to a pediatric oncology sector, located in the city of Natal / RN. The criteria used in the sample were: being hospitalized for cancer treatment; and present favorable physical conditions for carrying out the data collection. For the treatment of collected material was used content analysis, thematic modality. The study followed the ethical and legal principles governing scientific research with human beings and took place with the approval of the project by the Ethics and Research Committee of the Northern League Riograndense against Cancer, with opinion registered under number 329 015 and CAAE 16097613.9.0000.5293. According to the results it was found that, for the child, the care happens through technical activities, such as making procedures and the use of personal protective equipment, as well as through the dialogic relationship, which favors the establishment of confidence in care professional. Caring also means developing activities that promote well-being, the fun and the social and cognitive development, highlighting thus the playful, during hospitalization, as an auxiliary tool in the care process. During hospitalization, the child identifies two individuals responsible for their care, accompanying family and professional, and nursing professionals the most cited in moments of care. , Also of note, the promotion of care, in the perception of the child related to the infrastructure of the institution, environmental cleaning, personal hygiene, the medicalization and the food. It is concluded that care understood by the child, whilst still maintaining relations with the biomedical model, points to a new perspective that should consider the biological, social and psychological of acquiring cancer without unlink them of the development child. 9 Moreover, we see the child as an active social actor in this process, and therefore needs to be heard and answered their needs

Análise experimental de danos em pistões de motor à gasolina operando com adição de gás hidróxi

The addition of hydrogen gas as an alternative fuel source has been widely used, as well reported in scientific literature. Today, several experiments are underway for the use of hydrogen generators (electrolysers) demand for motor vehicles. In all these products their ads manufacturers claim that this provides a reduction of fuel consumption, reduces the emission levels of toxic gas by the discharge and improves engine life. This research analyzes the physical structure of engine components using electrolysis on demand. To this end, a stationary system was fitted with a power generator of electricity, drum roller and adapted two electrolyzers: a dry cell and wet cell other. In steps observation were consumption analyzes in four work load ranges and observing the piston engine, which has been cut and analyzed by Optical Microscopy (OM), Scanning Electron Microscopy and Dispersive Energy (SEM-EDS), X – Ray Diffraction (XRD) and Confocal Microscopy, the stationary system in each step. The results showed a considerable reduction in fuel consumption and a high corrosion in the original factory piston constituted of aluminum-silicon alloy. As corrosion barrier was made a plasma nitriding in the piston head, which proved resistant to attack by hydrogen, although it has presented evidence also, of having been attacked. It is concluded that the automotive electrolysers can be a good choice in terms of consumption and reducing toxic gas emissions, but the material of the combustion chambers of vehicles must be prepared for this purpose.

Estudo da correlação das características clínico-patológicas do câncer colorretal com a expressão imunohistoquímica de proteínas da progressão tumoral

Except the non-melanoma skin tumors, colorectal cancer is the second most common in the Southeastern Region of Brazil, the third most common in the Southern and Central Regions. It is also the forth most common in the Northern Region and it is the fifth one in the Northeastern. To assess pathological and clinical variables of colorectal Cancer is crucial to know the possible conclusions for the survival of patients and point out the characteristics in the progress of tumor, such as the profile of tumor invasion and its angiogenesis. This work focuses on analyzing clinically and pathologically some settings in colorectal cancer patients (CRC) in the city of Natal and its countryside through those variables as parameters of prognosis and determine the level of protein expression, for instance: E-cadherin (E-cad), beta- -catenin (β-cat), galectin-3 (gal-3), matrix metalloproteinases (MMP) 2 and 9 and vascular-endothelial growth factor alpha (α VEGF) in the tumor tissues. A retrospective study was done in colorectal cancer cases in the regions of Rio Grande do Norte state from 1995 to 2005, specifically in Natal city/RN/Brazil. The pathological and clinical variables, such as: age, gender, ethnicity, lifestyle, family history, the location of the primary tumor, level of differentiation, TDM staging, modified Dukes’, treatment and survival were analyzed. The pathological and clinical data were collected from medical records through a specific form and were filed on Excel. A total of 534 patients were selected from the Pathology Department file in this institution, however, 176 patients were excluded. 358 patients were included for Epidemiological analysis and its clinical and pathological correlations were selected. 180 patients were also selected for histological and immunohistochemical studies. The tumor progression of these selected proteins mentioned before were analyzed. The Paraffin blocks of these samples were treated by Microarray Tissue technique and its blades subjected to immunohistochemistry to test the intensity of these proteins in tumor tissues. The results of this analysis were correlated with clinicopathologic variables of patients. Statistical analysis using the chi-frame Pearson test and analysis of midlife by Kaplan-Meier curve was also utilized. P values < 0.05 were considered statistically significant. The average age of our sample was 58.8 years and 51.7 % were female. Alcohol consumption has increased by 1.71 time the risk of death by CCR (p = 0.034) and tobacco consumption increased 2.7 times the chance of developing tumors of high TNM stage (p = 0.001). Cancer patients had a family history of 3,833 times the chance of developing the CCR (p = 0.002). The expression of MMP-2 showed a significant association with tumors of high TNM stage (p <0.046) and mortality (p = 0.041). The α VEGF expression had statistically significant correlation with high TNM stage (p <0.009), degree of cell indifferentiation (p <0.025) and mortality (p <0.035). Expressions of E-cadherin and beta-catetina demonstrated tumor linked to high TNM stage (p = 0.0001) and Dukes› modified (p = 0.05), lesions in the rectum (p = 0.03 and p = 0.007, respectively), smoking (p = 0.05) and indifferentiation (p = 0.001). The expression of Gal-3 showed statistical significance with high TNM stage of patients (p = 0.01), smokers (p = 0.01), alcohol drinking (p = 0.03), indifferentiation (p = 0.0001) and mortality (p = 0.0001). Based on the results, therefore, we could realize that lifestyle and family history had correlation in the CCR prognosis, as well as MMP-2 expression, MMP-9, VEGF alpha, E-cadherin, Beta-catenin and Galectin-3 were important prognostic markers in tumor progression in colorectal cancer.

Evaluation of the castability of a Co-Cr-Mo-W alloy varying the investing technique

O objetivo deste estudo foi comparar a fusibilidade de ligas de Co-Cr-Mo-W (Remanium 2000), Ni-Cr (Durabond) e Co-Cr-Mo (Vera-PDI), incluídas em revestimentos à base de fosfato, sílica ou utilizando uma técnica mista. Uma rede de nylon quadrada (10 X 10 mm) com 100 espaços abertos serviu de modelo para construção de padrões de cera, que foram incluídos com revestimento à base de sílica, revestimento fosfatado e técnica mista (camada de revestimento fosfatado com 2 mm de espessura + revestimento à base de sílica). Quarenta e cinco espécimes (5 para cada condição experimental) foram fundidos sob chama de gás-oxigênio e a seguir jateados com óxido de alumínio. O número de segmentos fundidos completos foi contado para obter uma percentagem designada como "valor de fusibilidade", representando a precisão da liga em reproduzir os detalhes do molde. A análise estatística por meio de ANOVA a dois critérios e teste Tukey mostrou que, comparando-se as ligas, a Remanium 2000 teve fusibilidade estaticamente semelhante (p>0,05) à da Vera PDI e inferior à da liga Durabond (p<0,05). Considerando os resultados da técnica mista, a liga Remanium 2000 teve menor valor de fusibilidade (p<0,05) que as ligas Durabond e Vera PDI, que apresentaram valores estatisticamente semelhantes entre si (p>0,05). Concluindo, a fusibilidade da liga de Co-Cr-Mo-W (Remanium 2000) foi comparável à da liga de Co-Cr (Vera PDI) e inferior à da liga de Ni-Cr alloy (Durabond). À exceção da liga Remanium 2000, a técnica de inclusão mista aumentou consideravelmente a capacidade das ligas testadas de reproduzir os detalhes do molde, quando comparada à técnica de inclusão em revestimento fosfatado. A técnica de inclusão mista representa uma alternativa para melhorar a fusibilidade de ligas de metais básicos sem afetar a qualidade superficial das peças metálicas.

Evaluation of the castability of a Co-Cr-Mo-W alloy varying the investing technique

O objetivo deste estudo foi comparar a fusibilidade de ligas de Co-Cr-Mo-W (Remanium 2000), Ni-Cr (Durabond) e Co-Cr-Mo (Vera-PDI), incluídas em revestimentos à base de fosfato, sílica ou utilizando uma técnica mista. Uma rede de nylon quadrada (10 X 10 mm) com 100 espaços abertos serviu de modelo para construção de padrões de cera, que foram incluídos com revestimento à base de sílica, revestimento fosfatado e técnica mista (camada de revestimento fosfatado com 2 mm de espessura + revestimento à base de sílica). Quarenta e cinco espécimes (5 para cada condição experimental) foram fundidos sob chama de gás-oxigênio e a seguir jateados com óxido de alumínio. O número de segmentos fundidos completos foi contado para obter uma percentagem designada como "valor de fusibilidade", representando a precisão da liga em reproduzir os detalhes do molde. A análise estatística por meio de ANOVA a dois critérios e teste Tukey mostrou que, comparando-se as ligas, a Remanium 2000 teve fusibilidade estaticamente semelhante (p>0,05) à da Vera PDI e inferior à da liga Durabond (p<0,05). Considerando os resultados da técnica mista, a liga Remanium 2000 teve menor valor de fusibilidade (p<0,05) que as ligas Durabond e Vera PDI, que apresentaram valores estatisticamente semelhantes entre si (p>0,05). Concluindo, a fusibilidade da liga de Co-Cr-Mo-W (Remanium 2000) foi comparável à da liga de Co-Cr (Vera PDI) e inferior à da liga de Ni-Cr alloy (Durabond). À exceção da liga Remanium 2000, a técnica de inclusão mista aumentou consideravelmente a capacidade das ligas testadas de reproduzir os detalhes do molde, quando comparada à técnica de inclusão em revestimento fosfatado. A técnica de inclusão mista representa uma alternativa para melhorar a fusibilidade de ligas de metais básicos sem afetar a qualidade superficial das peças metálicas.

Controle ativo de vibração em estruturas inteligentes utilizando um controlador por modos deslizantes com compensação difusa

Smart structures and systems have the main purpose to mimic living organisms, which are essentially characterized by an autoregulatory behavior. Therefore, this kind of structure has adaptive characteristics with stimulus-response mechanisms. The term adaptive structure has been used to identify structural systems that are capable of changing their geometry or physical properties with the purpose of performing a specific task. In this work, a sliding mode controller with fuzzy inference is applied for active vibration control in an SMA two-bar truss. In order to obtain a simpler controller, a polynomial model is used in the control law, while a more sophisticated version, which presents close agreement with experimental data, is applied to describe the SMA behavior of the structural elements. This system has a rich dynamic response and can easily reach a chaotic behavior even at moderate loads and frequencies. Therefore, this approach has the advantage of not only obtaining a simpler control law, but also allows its robustness be evidenced. Numerical simulations are carried out in order to demonstrate the control system performance.

Controle ativo de vibração em estruturas inteligentes utilizando um controlador por modos deslizantes com compensação difusa

Smart structures and systems have the main purpose to mimic living organisms, which are essentially characterized by an autoregulatory behavior. Therefore, this kind of structure has adaptive characteristics with stimulus-response mechanisms. The term adaptive structure has been used to identify structural systems that are capable of changing their geometry or physical properties with the purpose of performing a specific task. In this work, a sliding mode controller with fuzzy inference is applied for active vibration control in an SMA two-bar truss. In order to obtain a simpler controller, a polynomial model is used in the control law, while a more sophisticated version, which presents close agreement with experimental data, is applied to describe the SMA behavior of the structural elements. This system has a rich dynamic response and can easily reach a chaotic behavior even at moderate loads and frequencies. Therefore, this approach has the advantage of not only obtaining a simpler control law, but also allows its robustness be evidenced. Numerical simulations are carried out in order to demonstrate the control system performance.

4 Tb/s transmission reach enhancement using 10 × 400 Gb/s super-channels and polarization insensitive dual band optical phase conjugation

In this paper, we experimentally demonstrate the benefit of polarization insensitive dual-band optical phase conjugation for up to ten 400 Gb/s optical super-channels using a Raman amplified transmission link with a realistic span length of 75 km. We demonstrate that the resultant increase in transmission distance may be predicted analytically if the detrimental impacts of power asymmetry and polarization mode dispersion are taken into account.

Edición de videos y diagramas en Básquetbol

La edición de videos proporciona al entrenador un elemento interesante para seleccionar imágenes y momentos clave del juego. Aquí se muestra como los registros audiovisuales seleccionados resultan útiles para entrenadores y jugadores en un contexto de práctica o de rendimiento deportivo, y para profesores y estudiantes en un contexto de enseñanza. La educación superior y las prácticas vinculadas a la dirección de equipos en una liga de básquetbol son los escenarios elegidos para revelar cómo el entrenador convive con el uso de herramientas informáticas que le permiten relacionarse con sus jugadores, con colegas y con otros integrantes de la liga. Aquí se considera la asociación del uso de internet, editor de videos, y repositorios de documentos. Se analizan las ventajas del uso de esta conjunción de herramientas aplicadas al entrenamiento, la práctica y la enseñanza del básquetbol. Además, se explica el equipamiento necesario para el ingreso de la tecnología informática propuesta, vinculada a la práctica y enseñanza del básquetbol

La basileía "revolucionaria" de Nabis

El rey Nabis de Esparta es caracterizado por las fuentes literarias antiguas como un tirano al haber emprendido una serie de reformas radicales que, particularmente en sus contenidos sociales, atentaban contra el orden establecido y ponían en peligro la supremacía en el Peloponeso de una conservadora liga aquea sostenida en las clases propietarias y respaldada por las imparables legiones romanas. Es el propósito del presente artículo analizar las bases de esa monarquía "revolucionaria" de Nabis, así como el alcance, los objetivos y la fortuna final de sus medidas, que supusieron un intento de acomodarse a la realidad de los estados helenísticos sin renunciar por ello a las señas de identidad y al acervo cultural espartano. La finalidad última era reconquistar parte de su pasado esplendor militar y lograr un lugar digno, si no hegemónico, en el complejo e inestable tablero geopolítico peloponésico, pero la elite aquea no cesó hasta acallar toda reivindicación socioeconómica en la sociedad lacedemonia.

Edición de videos y diagramas en Básquetbol

La edición de videos proporciona al entrenador un elemento interesante para seleccionar imágenes y momentos clave del juego. Aquí se muestra como los registros audiovisuales seleccionados resultan útiles para entrenadores y jugadores en un contexto de práctica o de rendimiento deportivo, y para profesores y estudiantes en un contexto de enseñanza. La educación superior y las prácticas vinculadas a la dirección de equipos en una liga de básquetbol son los escenarios elegidos para revelar cómo el entrenador convive con el uso de herramientas informáticas que le permiten relacionarse con sus jugadores, con colegas y con otros integrantes de la liga. Aquí se considera la asociación del uso de internet, editor de videos, y repositorios de documentos. Se analizan las ventajas del uso de esta conjunción de herramientas aplicadas al entrenamiento, la práctica y la enseñanza del básquetbol. Además, se explica el equipamiento necesario para el ingreso de la tecnología informática propuesta, vinculada a la práctica y enseñanza del básquetbol