Search for rare top quark decays

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Polícia de Segurança Pública: análise ao regime de prestação de trabalho em funções públicas do trabalho policial

O objetivo geral deste estudo centra-se na problemática da relação jurídica de emprego público dos trabalhadores com funções policiais e almeja precisar e compreender o modo de ligação entre a Polícia de Segurança Pública e a própria Administração Pública. A investigação efetuou-se a partir de entrevistas a atores envolvidos no processo de elaboração e discussão do Estatuto de pessoal desta Força de Segurança, obedecendo a um conjunto de parâmetros previamente definidos. Para a recolha dos dados, utilizámos a técnica da entrevista semiestruturada, com os dados recolhidos sujeitos a análise de conteúdo. As conclusões do estudo demonstraram que os trabalhadores com funções policiais não devem ser considerados de modo idêntico aos restantes trabalhadores devido à especificidade da sua missão. A restrição de direitos, o aumento de deveres, as incompatibilidades de funções e a exigência do próprio serviço assumem-se como dados justificativos da diferença. Em síntese, os entrevistados reconheceram a importância de que, numa época de generalização do contrato de trabalho em funções públicas, advinda da redução do aparelho do Estado, os trabalhadores com funções policiais devem manter o vínculo jurídico de nomeação, devendo o mesmo ser regulado segundo regras próprias, respeitadoras da especificidade do trabalho que realizamThe general purpose of this study lies on the problematics of the legal relationship of public employment of the workers with police duties and seeks to specify and understand the link between the Police (Polícia de Segurança Pública) and the public administration itself. The investigation was carried out by interviews to actors involved in the preparation and discussion process of the Police Staff's statute, which took into account a whole group of parameters previously defined. In order to collect the data, we used the semi-structured interview technic, which analysed the content of the collected data. The study's conclusions demonstrate that workers with public employment should not be considered equal to the rest of the workers due to their missions's specificity. The right's restriction and the duties increase, as well as the functions incompatibilities and the work's demanding are justifiable data of this difference. In short, the interviewed people admitted the importance resulting from the decrease of the State in this time, which generalizes the public functions labor contract. They recognize that workers with police duties should keep the nomination's legal bond, being this adjusted within its own rules which respect their work's specificit

O lugar da patrulha nas identidades profissionais: estudo da percepção das várias dimensões do seu trabalho

O objectivo geral deste estudo centra-se na problemática do relacionamento e afectação das dimensões pessoal, familiar, profissional, institucional/organizacional, sistémica, local e societal da identidade do patrulheiro e almeja precisar e compreender o papel da patrulha no seio desta complexidade. A investigação decorreu em Esquadras do COMETLIS, Polícia de Segurança Pública (PSP), onde foram seleccionados os sujeitos do estudo, obedecendo a um conjunto de parâmetros previamente definidos. Para a recolha dos dados, utilizámos a técnica da entrevista semi-estruturada, com o método das histórias de vida e os dados recolhidos sujeitos a análise de conteúdo. As conclusões do estudo demonstraram que os patrulheiros percepcionam e sentem nas suas vidas o trabalho da patrulha, reconhecendo o fraco apoio da organização, da qual construíram uma imagem negativa. Desejariam ter o apoio e o reconhecimento devidos, visto que a patrulha desempenha um papel essencial no equilíbrio das dimensões da identidade do patrulheiro e para a imagem da instituição. Em síntese, os entrevistados reconheceram, ainda, a importância de se apoiar e dignificar a patrulha, de modo a repensar as suas necessidades, o tipo de horários e, nomeadamente, as transferências internas, de modo a dignificar o trabalho da patrulha.The main object of this study is focused on the problematic of the relationship and affectation of the dimensions personal, familiar, professional, institucional/organizacional, sistemic, local and societal of identity of the patrolman, and longs for the need and the understanding of the role of the patrol in all this complexity. The investigation occurred in several police stations of COMETLIS (Metropolitan Command of Lisbon), from PSP (Public Security Police), where the subjects of investigation were selected, obeying to a set of parameters, previously selected. In order to collect data, we used the semi-structured interview technique, with the life stories method and the collected data, being a subject to an analysis of content. The conclusions of the study demonstrate that the patrolmen perceive and feel, in their professional everyday life, recognized that is important the support of the institution/organization, building, this way, an image of the institution which is negative. They wish to get more supports and consideration, since the patrol plays an essential role in the balance of the dimensions of the identity of the patrol craft and for the image of the institution. In conclusion, the interviewees still recognized the importance of supporting and dignifying the patrol, in order to rethink their needs, the kind of schedules and, namely, the internal transfers so the work of the patrol is dignified

Antimicrobial effect of silver nanoparticles on polypropylene and acrylic resin denture bases

The investigation of the antimicrobial action of Ag solutions in different surfaces has been performed, however, there is little data on the direct addition of those particles to the polypropylene denture base. The aim of this study was to evaluate the a

Maxillary removable partial denture combined with O’ring attachment implant: a case report

Oral rehabilitation with free-end removable partial denture (RPD) is one of the major challenges in prosthodontic dentistry. The absence of a distal abutment produces undesirable RPD movement during masticatory function due to the high resilience of the residual ridge, which limits the denture efficiency and may damage the abutment teeth and bone over time. The advent of dental implants made possible to substitute the missing teeth with fixed implant-supported dentures as the first choice treatment to overcome such inconveniences. However, this indication may not be suitable for all patients due to financial, anatomical or systemic health conditions. Nevertheless it is possible to improve free extension RPD by using implants in the posterior edentulous ridge to achieve biological, biomechanical, physiological and social benefits. This article aims to present a case report on oral rehabilitation in which a RPD was made combined with an implant for posterior support in a sizeable edentulous ridge. The patient appreciated the retention improvement and the aesthetic result. The combination of a RPD with a posterior implant is an alternative treatment for cases in which implant-supported fixed prosthesis is not indicated, reducing the displacement and minimizing the limitations of the free-end devices.A reabilitação por meio de p rótese parcial removível (PPR) para os c asos de e xtremidade livre d istal é um dos g randes desafios da reabilitação oral. A ausência de pilar posterior promove maior movimentação da PPR durante a função, devido à resiliência da fibromucosa. Com o advento dos implantes, esses passaram a ser a primeira alternativa de tratamento para arcos com essa configuração. Entretanto, nem todos os casos podem se beneficiar dessa indicação, considerando as condições financeiras, estruturais ou de ordem sistêmica do paciente. Para m elhorar o suporte posterior da PPR, é possível associá-la a os i mplantes no espaço edentado, buscando benefícios b iológicos, biomecânicos, sociais e fisiológicos. Nesse sentido, o objetivo desse trabalho é apresentar um caso clínico utilizando implante conjugado com PPR na reabilitação de um espaço edentado considerado grande. Ao final, a paciente se mostrou satisfeita com a estética e melhora da retenção. Portanto, a associação de PPR com implante é uma alternativa de tratamento aos pacientes que não podem ser submetidos a próteses fixas implanto suportadas, além de proporcionar a redução do deslocamento da extremidade livre desses aparelhos

Limb-Sparing Using Total Hip Arthroplasty in a Dog with Femoral Head Osteosarcoma

Background: Osteosarcoma (OSA) is the most common primary bone tumor of the appendicular skeleton of dogs. It mainly affects the metaphyseal region of long bones in large and giant breed dogs.The markedly aggressive and metastatic character of the disease leads to an invariably poor to unfavorable prognosis.Although amputation is commonly performed, different surgical techniques may be used to preserve the limb. The most common methods of limb preserving surgeries involve the use of endoprosthesis and allogeneic or autologous grafts. This report describes the successful use of total hip replacement to treat a 3-year-old male dog, with OSA in the femoral head and neck.Case: This report describes the successful use of total hip replacement to treat a 3-year-old male dog, with OSA in the femoral head and neck. The OSA stage IA located in the femoral head and neck was resected and treated through the limb-sparing. The bone defect and joint function was reconstructed with total hip arthroplasty technique using a cementless hip prosthesis. The result of the histopathological analysis of the excised bone tissue showed a minimally productive osteoblastic osteosarcoma. To date, the patient shows satisfactory movement rate and motion range, with no pain to palpation and without lameness in that limb. The radiographic follow-up after 24 months showed no local recurrence, metastasis pulmonary or complications related to the implant. Total hip arthroplasty resulted in safe recovery of orthopedic signs associated with osteosarcoma of the femoral head and neck, effectively acting as a limb preserving surgery after 32 months.Discussion: The limb-sparing procedure is an option to control local tumors that has become more popular among owners that do not accept the amputation of the limb. Similarly, it is a good alternative when another condition may interfere with the other limbs or may require amputation of another limb. The size and the potential for weight gain of the dog in this study could compromise its ambulation later, and it was a factor in the decision for the limb-sparing surgery. The allografts can be used to reconstruct the proximal femur, but they were not considered a viable option for this patient because of the reported complications, including graft fracture, non-union with the host bone and collapse of subchondral bone. The hip region does not allow the realization of arthrodesis because this joint is highly mobile, so the use of prosthetics as described is ideal for the preservation of joint biomechanics. Furthermore, the implant provides rapid postoperative recovery and immediate stability. Mean survival times were not significantly different between the limb-sparing and amputation techniques without adequate chemotherapy. In this case, despite the recommendation, the patient was monitored continuously without the association of adjuvant treatments according to the owner’s choice. The complications related with the use of cortical allograft, endoprosthesis, and pasteurized autograft include infection (31-60%), local recurrence (15-28%) or implant failure (11-40%). The implant luxation is the most common non-traumatic acute complication in the short term after limb-sparing surgery of proximal femur in humans and total hip replacement in dogs. To date, no complications have been observed after the procedure was performed. In conclusion, preservation of limbs in cases of osteosarcoma is favorable depending on the degree of involvement, but it requires specific techniques according to the location, to improve the quality of life and animal survival. In this case, the total hip arthroplasty for initial osteosarcoma in the femoral head and neck got an unexpected result, especially given the nature of osteosarcoma, limitations of wide excision with this approach and lack of adjuvant therapy

Pollen analysis of honey samples produced in the counties of Santa Helena and Terra Roxa, western Region of Paraná, Southern Brazil

A melissopalinologia foi utilizada para determinar a origem botânica do mel, importante para sua rastreabilidade. Quarenta amostras de mel dos municípios de Santa Helena (20) e Terra Roxa (20), região oeste do Paraná, foram analisadas de acordo com os tipos de pólen e comparações com os catálogos de pólen e literatura especializada. Em relação à qualidade analítica, foram identificados 300 grãos de pólen por amostra. Nas amostras de Santa Helena, foram encontrados 71 tipos de pólen de 24 famílias, classificados como mel monofloral de Hovenia dulcis (8) e o restante como multifloral (12). Nas amostras da Terra Roxa, 64 tipos de pólen pertencentes a 29 famílias foram classificadas como Glycine max L. Merrill (7), Mimosa scabrella Benth (2),Mimosa caesalpiniifolia Benth (1), Mimosa verrucosa Benth (1), Mikania sp. (1) e Senecio sp. (1) e como multifloral (7). Os dois locais têm um alto índice de similaridade, no entanto, a predominância de alguns tipos de pólen indica a especificidade botânica da localidade. Para Santa Helena, maior significância foi observada para o pólen de H. dulcis , Eucalyptus sp. , Parapiptadenia rigida , e leucena ; em Terra Roxa, os tipos de pólen G. max , M. scabrella e Eucalyptussp. teve mais incidentes. Apesar do índice de similaridade, os indicadores mostram diferenças entre as áreas produtoras. As amostras de mel de Santa Helena apresentaram maior diversidade de pólen em relação às amostras de Terra Roxa, refletindo a cobertura vegetativa predominante de matas ciliares e culturas agrícolas, respectivamente, em cada município

Famílias frente a crianças com diagnóstico de autismo: um olhar para a atuação de profissionais da psicologia / Psychology and families among autism diagnosis: a literature review

Este estudo objetivou conhecer a atuação de psicólogos(as), no que tange as relações familiares diante do diagnóstico de autismo. Para tanto, realizou-se uma revisão bibliográfica em bases de dados científicos, que resultou na seleção de 14 artigos que envolveram as experiências familiares em relação ao autismo e a atuação de psicólogos(as) na atenção a famílias. Como resultados observamos sentimentos gerados pelo diagnóstico e que geralmente são as mães as principais cuidadoras. Identificamos estratégias de enfrentamento, como crenças, o suporte social, programas para formação e educação para pais e serviços de saúde. Ainda elencamos a atuação psicológica, como sendo, prevalentemente psicanalítica. Assim, consideramos, que o psicólogo é um dos profissionais que precisam compor a atenção aos familiares no momento e após o diagnóstico, bem como, se vislumbraram possibilidades para também atender às demandas de saúde mental dos familiares e não apenas a pessoa com autismo

Search for the standard model Higgs boson produced in association with top quarks and decaying into a bbˉb\bar{b} pair in pppp collisions at s\sqrt{s} = 13 TeV with the ATLAS detector

A search for the standard model Higgs boson produced in association with a top-quark pair, tt¯H, is presented. The analysis uses 36.1  fb-1 of pp collision data at s=13  TeV collected with the ATLAS detector at the Large Hadron Collider in 2015 and 2016. The search targets the H→bb¯ decay mode. The selected events contain either one or two electrons or muons from the top-quark decays, and are then categorized according to the number of jets and how likely these are to contain b-hadrons. Multivariate techniques are used to discriminate between signal and background events, the latter being dominated by tt¯+jets production. For a Higgs boson mass of 125 GeV, the ratio of the measured tt¯H signal cross-section to the standard model expectation is found to be μ=0.84-0.61+0.64. A value of μ greater than 2.0 is excluded at 95% confidence level (C.L.) while the expected upper limit is μ<1.2 in the absence of a tt¯H signal.Peer Reviewe

Performance of the ATLAS Track Reconstruction Algorithms in Dense Environments in LHC Run 2

With the increase in energy of the Large Hadron Collider to a centre-of-mass energy of 13  $\text {TeV}$ for Run 2, events with dense environments, such as in the cores of high-energy jets, became a focus for new physics searches as well as measurements of the Standard Model. These environments are characterized by charged-particle separations of the order of the tracking detectors sensor granularity. Basic track quantities are compared between 3.2 fb$^{-1}$ of data collected by the ATLAS experiment and simulation of proton–proton collisions producing high-transverse-momentum jets at a centre-of-mass energy of 13  $\text {TeV}$ . The impact of charged-particle separations and multiplicities on the track reconstruction performance is discussed. The track reconstruction efficiency in the cores of jets with transverse momenta between 200 and 1600 $\text {GeV}$ is quantified using a novel, data-driven, method. The method uses the energy loss, ${\text { d}}{} \textit{E}/d\textit{x}$ , to identify pixel clusters originating from two charged particles. Of the charged particles creating these clusters, the measured fraction that fail to be reconstructed is $0.061 \pm 0.006\ {\text {(stat.)}} \pm 0.014\ {\text {(syst.)}}$ and $0.093 \pm 0.017\ {\text {(stat.)}}\pm 0.021\ {\text {(syst.)}}$ for jet transverse momenta of 200–400  $\text {GeV}$ and 1400–1600  $\text {GeV}$ , respectively.Peer Reviewe