3,808 research outputs found
Optical demultiplexer device operating in the visible spectrum
In this paper, we present results on the use of multilayered a-SiC:H heterostructures as a device for wavelength-division demultiplexing of optical signals. These devices are useful in optical communications applications that use the wavelength division multiplexing technique to encode multiple signals into the same transmission medium. The device is composed of two stacked p-i-n photodiodes, both optimized for the selective collection of photo generated carriers. Band gap engineering was used to adjust the photogeneration and recombination rate profiles of the intrinsic absorber regions of each photodiode to short and long wavelength absorption in the visible spectrum. The photocurrent signal using different input optical channels was analyzed at reverse and forward bias and under steady state illumination. A demux algorithm based on the voltage controlled sensitivity of the device was proposed and tested. An electrical model of the WDM device is presented and supported by the solution of the respective circuit equations
The impact of changing wildfire regimes on wood availability from portuguese forests
This article belongs to the special issue: Fire policies and practices in Europe: solving the Fire ParadoxThe perception of the good capability of the Portuguese mainland for timber production has sustained forest
expansion policies during the twentieth century. These policies led to an increase of production forests, maritime
pine (Pinus pinaster) first and eucalyptus (Eucalyptus globulus) later to support establishment and development
of wood based industries (sawn, pulp and paper). The most recent forest inventory from 2005/6
estimated an area of 885,000 ha for maritime pine (8.9% of the country) and 740,000 ha for eucalyptus (7.5%).
Today wood based industries (sawn, pulp and paper) are important for jobs and economy, using essentially
the raw material produced in the country.
However, forests are at high risks of wildfires, with pine and eucalyptus burning at an annual rate of 3â4%
between 1996 and 2005. This resulted in great concerns about the sustainability of the national supply of
wood to forest industries. As a consequence the National Forest Strategy (DGRF, 2007) recognized the decrease
of risks associated with wildfires as a main policy objective.
We predict the effect of different wildfire scenarios on wood availability for pine and eucalyptus forests with
Markov chain models, by using national forest inventory and wildfire data
Negative returns on positive emotions: The influence of pride and self-regulatory goals on repurchase decisions.
Kidney Injury in type 2 diabetic: the role of berberine treatment
rType 2 diabetes mellitus is a multifactorial disease. Prolonged hyperglycemia is
one of the major determinants of long-term complications of diabetes. Diabetic
nephropathy (DN) refers to a set of structural and functional changes which arise
in response to chronic glycemic attack. Because diabetes is a progressive disease,
pharmacotherapies with complementary mechanisms of action will be necessary
to achieve glycemic goals.
Berberine is a natural alkaloid isolated from the Coptis Chinensis. Although
routinely prescribe in Asian countries, an interest in its beneficial effects in
metabolic diseases has been growing in the Western world over the last decade.
The aim of our work was to analyze the effects of BBR in T2DM, specifically in
several markers of diabetic nephropathy. To realize our work we analyzed the
metabolic profile and several parameters (energy homeostasis, inflammation and
fibrosis) in cortex kidney tissue of 12 month old rats.
To testing the effects of this natural compound in diabetic renal disease, we will
go studding the profile metabolic of these animals. In renal tissue we will go
evaluated the activity of two enzymes activated protein kinase (AMPK) and
Sirtuin (Sirt)-1. Besides that, it is essential to study the role of several parameters
in the evolution of renal disease like, Transforming growth factor (TGF)-ÎČ and
pro-inflammatory cytokines
In conclusion, berberine is a valuable candidate for diabetic renal disease
therapy?info:eu-repo/semantics/publishedVersio
Multimodal Analgesia: Optimizing Perioperative Pain Management
Multimodal pain management is the action of utilizing at least two different medication classes mechanisms in conjunction with non-pharamacologic measures in order to optimize pain relief.
Introduction: This teaching tool will be used to educate nurses on the use of Multimodal medications prior and after surgical procedures. With the recent increase in opioid prescription abuse, multimodal medications should be a first-line option utilized to help manage pain with minimal or no opioids throughout the operative process.
Background: Pain after a surgical procedure is common and is often expected. Common Multimodal Analgesia Regimens include Acetaminophen, NSAIDs, COX-2 selective nonsteroidal anti-inflammatory agents, Gabapentin or Pregabalin, as well as nerve blocks. Greenwich Hospital utilizes all of these modals for pain management. Multimodal analgesia can also be used when the patient is discharged after surgery which will hopefully decrease the amount of opioids prescribed upon discharge.
Purpose: The purpose of using multimodal pain management at Greenwich Hospital is to not only provide patients with a more controlled pain management regimen but also address and lessen the current opioid crisis seen within our nation today.
Implementation: This form of pain management will be implemented by the nurses through communication and working alongside our patient and their physician to discover which combination of multimodal regimens is most effective for them. Education will also be provided on the interest related to decreasing the opioid prescriptions overall.
Conclusion: Utilizing the multimodal approach is the approach of choice for relieving postoperative pain. Incorporating this method can help to minimize side effects associated with opioid use and make strides towards fixing the current opioid crisis
Medical negligence in a case of brayn aneurysm
Traballo fin de grao (UDC.DER). Dereito. Curso 2016/201
O impacto da incapacidade fĂsica na qualidade de vida relacionada com a saĂșde nos doentes oncolĂłgicos : um estudo exploratĂłrio
Tese de mestrado, Psicologia (Secção de Psicologia ClĂnica e da SaĂșde - NĂșcleo de Psicologia da SaĂșde e da Doença), Universidade de Lisboa, Faculdade de Psicologia e de CiĂȘncias da Educação, 2009Este estudo pretendeu explorar a relação entre a Incapacidade fĂsica e as percepçÔes deQualidade de Vida Relacionada com a SaĂșde (QDVRS) em doentes oncolĂłgicos. E pretendeu tambĂ©mconhecer os temas ligados Ă vivĂȘncia da incapacidade fĂsica e da funcionalidade nesses mesmosdoentes.Para este estudo, foi recolhida uma amostra de conveniĂȘncia de 26 indivĂduos (20 do sexofeminino e 6 do sexo masculino) com diagnĂłstico mĂ©dico de doença oncolĂłgica, seguidos na ClĂnicada Dor do IPOLFG. Tendo em conta os objectivos da investigação foram aplicados os seguintesinstrumentos: Functional Assessment Cancer Therapy - General, version 4 (FACT-G, v.4, versĂŁoportuguesa), Medical Outcomes Study 36 - Item Short Form SF - 36, version 2 (SF-36, v.2, versĂŁoportuguesa), Functional Living Ăndex - Cancer (FLI-C, traduzido e adaptado especialmente para esteestudo), e TermĂłmetro do Distresse. Para alĂ©m destes instrumentos, 15 dos 26 participantes, foramainda alvo de uma Entrevista Semi-Estruturada, e da Escala Visual AnalĂłgica (EVA) da CapacidadeFĂsica. Os discursos dos participantes foram categorizados num conjunto de Temas associados Ă experiĂȘncia da incapacidade fĂsica e da funcionalidade, atravĂ©s da anĂĄlise de conteĂșdo das entrevistasrealizadas.A incapacidade fĂsica neste estudo foi mensurada atravĂ©s da EVA para a capacidade fĂsica eatravĂ©s das dimensĂ”es dos questionĂĄrios que fazem apelo Ă capacidade fĂsica, pelo que esta foiinterpretada de acordo com o significado das dimensĂ”es desses questionĂĄrios. Assim ao explorar arelação existente entre a incapacidade fĂsica e a QDVRS, verificou-se que a incapacidade fĂsica serelaciona de forma positiva com a QDVRS. Verificou-se tambĂ©m que a incapacidade fĂsica se podecorrelacionar negativamente com a QDVRS, contudo de forma menos expressiva. A correlaçãonegativa verificou-se entre as dimensĂ”es Funcionamento FĂsico e Dor Corporal do SF-36 e a escalaglobal de Bem-Estar do FACT-G, mostrando assim que nĂveis de QDVRS favorĂĄveis se podem fazeracompanhar por baixos nĂveis de capacidade fĂsica. AtravĂ©s da anĂĄlise qualitativa, foram identificados14 temas bĂĄsicos considerados como os mais representativos e preponderantes na experiĂȘncia daincapacidade fĂsica e da funcionalidade, em que destes temas se destaca o tema Descrição de sintomasfĂsicos incapacitantes.Assim, pode-se dizer que a incapacidade fĂsica pode interferir com a percepção que os doentesoncolĂłgicos fazem da sua QDVRS. Nesse sentido, diminuir a incapacidade fisica, nomeadamente ossintomas fisicos incapacitantes, Ă© fundamental para promover uma melhor QDVRS nestes doentes.The present study was conducted to explore the relationship between physical disability andHealth Related Quality of Life (HRQOL) in cancer patients. This study also pretend understand thecentral themes connected with living physical disability and functionality in that patients.In this study a convenience sample of twenty women and six men with a medical diagnosis ofCancer was collected at the Pain Clinic's IPOLFG. In accordance to the objectives of the presentresearch the following instruments were used: Functional Assessment Cancer Therapy - General,version 4 (FACT-G, v.4, Portuguese version), Medical Outcomes Study 36 - Item Short Form SF -36, version 2 (SF-36, v.2, Portuguese version), Functional Living Ăndex - Cancer (FLI-C, translatedand adapted specifically for this study), e Thermometer of Distress. In addition to these instruments,15 of the 26 participants were given a semi-structured interview and a Visual Analogue Scale (VAS)concerning the physical capacity . The discourse of the participants was content analised andcategorized through a number of issues associated with the experience of disability andfunctionality,.The disability in this study was assessed through the VAS for the physical capacity andthrough the dimensions of the questionaires related to physical capacity. Data was interpretedaccording to the meaning of the dimensions of these questionnaires. The data suggest that disabilityis related in a positive way with QDVRS. However, it was also suggested that the disability can becorrelated negatively with QDVRS, however not as significant. A negative correlation was foundbetween the dimensions Physical Functioning and Body Pain scales of the SF-36 and overall wellbeingof the FACT-G, showing that levels of favorable QDVRS can be accompanied by low levels ofphysical capacity, which is in contradiction with previous results that say that high values of physicalcapacity correspond to favorable QDVRS. Through qualitative analysis, 14 central themes wereidentified as the most representative and preponderant in the experience of disability andfunctionality, the most proeminent is Description disabling physical symptoms.We can say that physical disability may interfere with the cancer patients' perception of theirQDVRS. So, it seems that an effort to reduce the physical disability, including disabling physicalsymptoms, is essential to promote a better QDVRS in these patients
Noise on Board:Workers Protected?
[Resumo] Unha das moitas particularidades do traballo no mar, en concreto nos buques mercantes, Ă© que os traballadores deben permanecer no centro de traballo, o buque, unha vez finalizada a xornada laboral. Non cabe dĂșbida da responsabilidade dos empresarios no tocante aos danos para a sĂșa saĂșde que calquera traballador/a poida sufrir no seu traballo e durante a sĂșa xornada laboral, mais atĂ© aĂ chega a sĂșa responsabilidade, como sucede no resto de actividades laborais. Con todo, no mar, o buque non Ă© sĂł o lugar de traballo, tamĂ©n Ă© a vivenda dos mariños, e podemos afirmar que as condiciĂłns de vida destes non son mĂĄis que unha continuaciĂłn das sĂșas condiciĂłns de traballo; ora ben, como debe considerarse un dano na saĂșde dos mariños nese intervalo de tempo non laboral que permanecen no centro de traballo, o buque? A xurisprudencia, por medio de numerosas sentenzas, estableceu o nexo causal entre o traballo dos mariños e o dano que poidan sufrir a bordo fĂłra da sĂșa xornada laboral. Neste estudo tomouse o ruĂdo como fĂo condutor da relaciĂłn entre a responsabilidade dos empresarios e os danos que poden sufrir os traballadores non sĂł na sĂșa xornada laboral, senĂłn tamĂ©n fĂłra dela. Mais que normativas sobre ruĂdo se deben aplicar a ese perĂodo non laboral? Tecnicamente falando, tratarĂase de ruĂdo laboral durante as oito horas da xeira e de ruĂdo ambiental o resto da xornada, polo que entrarĂa en escena non sĂł a corresponsabilidade das autoridades (marĂtimas?, laborais?, de saĂșde pĂșblica?), senĂłn tamĂ©n a normativa ambiental. Pola sĂșa vez, o ĂĄmbito mundial do transporte marĂtimo trae consigo a aplicaciĂłn de normativa internacional. No entanto, a pesar das variadas responsabilidades e das variadas normativas de aplicaciĂłn, preguntĂĄmonos: fronte ao ruĂdo a bordo, estĂĄn os mariños protexidos?[Abstract] One of peculiarities of work at sea, in particular on merchant ships, is that the worker must remain at his workplace, on the ship, once his working shift has finalized. There is no doubt of the employers responsibility in regards to the health damages a worker can suffer in his job and during his working hours, but this is where his responsibilities end, as in other labour activities. However, at sea, the ship is not only the workplace, it is also the home of the marine and we can affirm that the conditions of life are not more than a continuation of his working conditions, but how ought we to considerer health damages to the marine in this interval of time, non-working hours, and who remains in the workplace, on the ship?. Jurisprudence, by means of numerous sentences, has established the causal link between the work of the marine and the damage, which he could suffer on board on his leisure time. In this study we adopt acoustic noise as a link between the responsibility of the employer and the damages that a worker may suffer, not only during his working shift, but also out of it. But what regulations must we apply to this during non-working periods?. Technically speaking, we refer to noise as that produced during the 8 hours of work and environmental noise during the rest of the day, by which the co-responsibilities of the authorities (maritime? labour? public health?) would enter into scene, as well as the environmental rules. In turn, the global stage of maritime transport brings about in its self the application of international rules. Nevertheless, in spite of the varied responsibilities and of the diverse rules of application, we ask ourselves in regards to the noise on board, is the marine protected
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