938 resultados para post mortem interval


Relevância:

80.00% 80.00%

Publicador:

Resumo:

In this study we investigate Pleistocene vegetation and climate change in southern East Africa by examining plant leaf waxes in a marine sediment core that receives terrestrial runoff from the Limpopo River. The plant leaf wax records are compared to a multi-proxy sea surface temperature (SST) record and pollen assemblage data from the same site. We find that Indian Ocean SST variability, driven by high-latitude obliquity, exerted a strong control on the vegetation of southern East Africa during the past 800,000 yr. Interglacial periods were characterized by relatively wetter and warmer conditions, increased contributions of C3 vegetation, and higher SST, whereas glacial periods were marked by cooler and arid conditions, increased contributions of C4 vegetation, and lower SST. We find that Marine Isotope Stages (MIS) 5e, 11c, 15e and 7a-7c are strongly expressed in the plant leaf wax records but MIS 7e is absent while MIS 9 is rather weak. Our plant leaf wax records also record the climate transition associated with the Mid-Brunhes Event (MBE) suggesting that the pre-MBE interval (430-800 ka) was characterized by higher inputs from grasses in comparison to relatively higher inputs from trees in the post-MBE interval (430 to 0 ka). Differences in vegetation and SST of southern East Africa between the pre- and post-MBE intervals appear to be related to shifts in the location of the Subtropical Front. Comparison with vegetation records from tropical East Africa indicates that the vegetation of southern East Africa, while exhibiting glacial-interglacial variability and notable differences between the pre- and post-MBE portions of the record, likely did not experience such dramatic extremes as occurred to the north at Lake Malawi.

Relevância:

80.00% 80.00%

Publicador:

Resumo:

The consumption of a product is directly linked to its quality, and are required to comply with quality standard regulations. In chicken "griller" which comes from industrial strains, selected for best growth performance, shot with up to 35 days old and weighing 1,400kg, they have not been reported in the literature a number of quality aspects This study aimed determine the muscle transformation time in the flesh in chickens "griller" incidence of meat defects, "PSE" (pale, soft and exdudative) and "DFD" (dark, firm and dry) and their correlation between different window times slaughter (total time between beginning of the fasting and the time of slaughter) and pH curve, four different times post mortem. The base data for the study was composed of information of 208 chickens, collected between August and September 2014, in a slaughterhouse slaughtering chickens in the middle region of Triangulo Mineiro and Alto Paranaíba. We used the Minitab 17.1.0 program for the development of descriptive statistical analysis and Pareto charts. The Pearson correlation was used to evaluate the linear relationship between two variables and Excel 2013, Microsoft Office®, to produce tables and graphs. The analysis consisted of 11 chickens cities and the distance to the poultry slaughterhouse ranged from 24.5 km to 123 km. It was observed that the pH curve decays gradually until time 5horas after slaughter, and its increase was 24, indicating the transformation of the muscle meat. The incidence of regular meat was 39.9%, "DFD" 30.3% and "PSE" 29.8%. For "DFD" meat, it was observed that factors: low ambient temperature, longer transportation and fast window and mileage at dirt road, contributed to its occurrence (p <0.05). For "PSE" meat, it was observed that lower body weight factors, longer transport favored frequency (p <0.05) of the meat defect. There was no significant correlation in variance analysis between distance, waiting time at rest shed and humidity related to meat defects (p> 0.05). This high incidence of defects meat may be due to pre-slaughter stress factors.

Relevância:

80.00% 80.00%

Publicador:

Resumo:

To date little is known about the practices of domiciliary midwives and the outcomes of home birth in Ireland. The purpose of this review is to provide some background information on the situation for women seeking a home birth and to document the outcomes of home births in Ireland between 1993 -1997. Design: Descriptive analysis of prospective data collected from domiciliary midwives regarding women who requested a home birth between 1993 and 1997. Participants: The questionnaire was distributed to 15 domiciliary midwives; this included all the domiciliary midwives known to the authors to be practising in Ireland at that time. Findings: During this period, 585 women planned to give birth in their home with the assistance of midwives, 500 women achieved this. The spontaneous vaginal delivery rate for women who commenced their labour at home was 96.9% (n = 554). These women gave birth without medications or other interventions. 544 (93%) of the women breastfed their babies and 538 (92%) were still breastfeeding at 6 weeks. This is the first review of domiciliary midwifery practice in Ireland in recent years. They obtained data from 11 independent midwives on 585 women who planned home births. Findings showed high rates of spontaneous vaginal delivery and breastfeeding. There were 500 babies born at home with three perinatal deaths, including one undiagnosed breech delivery, one infant with abnormal lungs on post-mortem and one infant with Potter's Syndrome who was stillborn.

Relevância:

80.00% 80.00%

Publicador:

Resumo:

Stillbirth is without question one of the most devastating experiences of grief for parents and families. The death of a baby is also a distressing experience for healthcare professionals who share hopes of a live healthy baby at the end of pregnancy. It is a sad reality however, that in Ireland one in 238 babies will die before birth. The creation and nurture of new life in pregnancy is a spiritual experience as a new baby is at the same time experienced and anticipated. There is little in the published literature concerning the spiritual impact of stillbirth on healthcare chaplains who are the main providers of spiritual care for parents and staff colleagues in Irish maternity units. In addition there are few qualitative studies that explore the impact of stillbirth on consultant obstetricians and no published studies on the spiritual impact of stillbirth on bereaved parents. This study explored the spiritual and professional impact of stillbirth on Irish maternity healthcare chaplains, consultant obstetricians and bereaved parents. Following an overall review of spiritual care provision following stillbirth in the Irish maternity services, thematic analysis was used in the first phase of the study following in-depth interviews with maternity healthcare chaplains. Interpretative Phenomenological Analysis was used in the second and third phases with consultant obstetricians and bereaved parents respectively. The data from both maternity healthcare chaplains and consultant obstetricians revealed that stillbirth posed immense personal, spiritual and professional challenges. Chaplains expressed the spiritual and professional impact of stillbirth in terms of perception of their role, suffering, doubt and presence as they provided care for bereaved parents. A review of spiritual care provision in the Irish maternity services revealed a diversity of practice. The data from consultant obstetricians identified considerable personal, professional and spiritual impact following stillbirth that was identified in superordinate themes of human response to stillbirth, weight of professional responsibility, conflict of personal faith and incongruence between personal faith and professional practice. Data from bereaved parents revealed that stillbirth was spiritually challenging and all parents expressed that stillbirth posed considerable challenge to their faith/ belief structure. The parents of only three babies felt that their spiritual needs were adequately addressed while in hospital. The data had six superordinate themes of searching for meaning, maintaining hope, importance of personhood, protective care, questioning core beliefs and relationships. Other findings from the data from bereaved parents outlined the importance of environment of care and communication. This study has revealed the immense impact of stillbirth on healthcare chaplains, consultant obstetricians and most especially the spiritual impact for bereaved parents. Recommendations are made for improvements in clinical and spiritual care for bereaved parents following stillbirth and for staff wellbeing and support initiatives. Further research areas are recommended in the areas of spiritual care, theological reflection, bereavement care, post-mortem consent procedures and staff wellbeing.

Relevância:

80.00% 80.00%

Publicador:

Resumo:

La idea de infierno como lugar del castigo o expiación, era ya conocida en la Antigüedad Clásica. De las innumerables referencias a la misma seleccioné para esta ponencia el poema de Lucano titulado Farsalia. En el libro VI, versos 413-830, episodio de la maga Ericto, hay claras referencias a los terrores generados en y desde del inframundo: sonidos provenientes del más allá; castigos aplicados a los cuerpos y la visión final de un cadáver resucitado que cuenta lo que experimentó. La ponencia se completa con una lectura del poema 11 del libro Espantapájaros de Oliverio Girondo, escrito dos mil años después del texto latino, donde un suicida vuelca sus sensaciones post-mortem de manera espeluznante y se cierra así un círculo dialógico e intertextual que presenta el concepto de infierno como experiencia física

Relevância:

80.00% 80.00%

Publicador:

Resumo:

RATIONALE: Antenatal exposure to the glucocorticoid dexamethasone dramatically increases the number of mesencephalic dopaminergic neurons in rat offspring. However, the consequences of this expansion in midbrain dopamine (DA) neurons for behavioural processes in adulthood are poorly understood, including working memory that depends on DA transmission in the prefrontal cortex (PFC). OBJECTIVES: We therefore investigated the influence of antenatal glucocorticoid treatment (AGT) on the modulation of spatial working memory by a D1 receptor agonist and on D1 receptor binding and DA content in the PFC and striatum. METHODS: Pregnant rats received AGT on gestational days 16-19 by adding dexamethasone to their drinking water. Male offspring reared to adulthood were trained on a delayed alternation spatial working memory task and administered the partial D1 agonist SKF38393 (0.3-3 mg/kg) by systemic injection. In separate groups of control and AGT animals, D1 receptor binding and DA content were measured post-mortem in the PFC and striatum. RESULTS: SKF38393 impaired spatial working memory performance in control rats but had no effect in AGT rats. D1 binding was significantly reduced in the anterior cingulate cortex, prelimbic cortex, dorsal striatum and ventral pallidum of AGT rats compared with control animals. However, AGT had no significant effect on brain monoamine levels. CONCLUSIONS: These findings demonstrate that D1 receptors in corticostriatal circuitry down-regulate in response to AGT. This compensatory effect in D1 receptors may result from increased DA-ergic tone in AGT rats and underlie the resilience of these animals to the disruptive effects of D1 receptor activation on spatial working memory.

Relevância:

80.00% 80.00%

Publicador:

Resumo:

A partir del inventario post mortem de los libros de Pere Dorchal, sacerdote beneficiado en la catedral de Valencia, datado en 1419, se estudia la composición de la biblioteca de un predicador. Al mismo tiempo, se recompone su biografía.

Relevância:

80.00% 80.00%

Publicador:

Resumo:

This Bill marks the first occasion on which the British legislature proposed to confer upon authors a lifetime interest in their literary works (with an additional eleven year post-mortem term vesting in their estates), as well as limited rights of translation and abridgement. In addition the draft legislation proposed to render null and void any contract purporting to assign an author's rights to another for a period of longer than ten years.
The commentary describes the background to the Bill, and in particular the attempts of the London book trade to secure more extensive legislative protection in both 1735 and 1737. It argues that the 1737 Bill is significant precisely because it was never made into law, and because it did not suit the best interests of the metropolitan booksellers. Instead, the book trade increasingly turned to the courts to further secure their commercial interests, giving rise to what is commonly referred to as the ‘battle of the booksellers' throughout the next 40 years.

Relevância:

80.00% 80.00%

Publicador:

Resumo:

The Act providing authors with the first post-mortem term of copyright protection. The term of copyright was to last either for the life of the author plus seven years after his or her death, or for forty-two years from the first publication of the same (whichever was longer). The commentary briefly discusses Thomas Noon Talfourd's repeated attempts to secure such legislation between 1837 and 1841, the opposition he experienced thereto (including Thomas Babington Macaulay's famous speech in the House of Commons on 5 February 1841 against extending the copyright term), and the success which Lord Mahon had in finally securing the Act in 1842.

Relevância:

80.00% 80.00%

Publicador:

Resumo:

Legislation conferring copyright protection on paintings, drawings, and photographs for the life of the author plus a seven year post mortem term. The Act was also innovative in de-coupling the copyright term from the event of publication, in providing artists with a new form of ‘moral rights' protection, and in introducing the concept of "originality" as the standard threshold for copyright protection.
The commentary explores the background to the legislation, and in particular, the international copyright regime, the nature of the art market in eighteenth and early nineteenth centuries, the role of the Society of Artists in lobbying for legislative protection, and the impetus which the International Exhibition provided for securing the same. The commentary also considers how the 1862 Bill, in its earliest incarnation, incorporated elements that would have signalled a radical departure from established copyright norms. In particular, the Bill proposed: that copyright protection should not be contingent upon registration; and that protection should be offered on a universal basis, regardless of an artists' nationality, and regardless of where the work in question was created.

Relevância:

80.00% 80.00%

Publicador:

Resumo:

Taphonomic research of bones can provide additional insight into a site's formation and development, the burial environment and ongoing post-mortem processes. A total of 30 tortoise (Cylindraspis) femur bone samples from the Mare aux Songes site (Mauritius)were studied histologically, assessing parameters such as presence and type of microbial alteration, inclusions, staining/infiltrations, the degree of microcracking and birefringence. The absence of microbial attack in the 4200 year old Mare aux Songes bones suggests the animals rapidly entered the soil whole-bodied and were sealed anoxically, although they suffered frombiological and chemical degradation (i.e. pyrite formation/oxidation, mineral dissolution and staining) related to changes in the site's hydrology. Additionally, carbon and nitrogen stable isotopeswere analysed to obtain information on the animals' feeding behaviour. The results show narrowly distributed δ13C ratios, indicating a terrestrial C3 plant-based diet, combined with a wide range in δ15N ratios. This is most likely related to the tortoises' drought-adaptive ability to change their metabolic processes, which can affect the δ15N ratios. Furthermore, ZooMS collagen fingerprinting analysis successfully identified two tortoise species (C. triserrata and C. inepta) in the bone assemblage,which,when combined with stable isotope data, revealed significantly different δ15N ratios between the two tortoise species. As climatic changes around this period resulted in increased aridity in the Mascarene Islands, this could explain the extremely elevated δ15N ratio in our dataset. The endemic fauna was able to endure the climatic changes 4200 years ago, although human arrival in the 17th century changed the original habitat to such an extent that it resulted in the extinction of several species. Fortunately we are still able to study these extinct tortoises due to the beneficial conditions of their burial environment, resulting in excellent bone preservation.

Relevância:

80.00% 80.00%

Publicador:

Resumo:

Background
Currently, there is growing interest in developing ante and post mortem meat inspection (MI) to incorporate measures of pig health and welfare for use as a diagnostic tool on pig farms. However, the success of the development of the MI process requires stakeholder engagement with the process. Knowledge gaps and issues of trust can undermine the effective exchange and utilisation of information across the supply chain. A social science research methodology was employed to establish stakeholder perspectives towards the development of MI to include measures of pig health and welfare. In this paper the findings of semi-structured telephone interviews with 18 pig producers from the Republic of Ireland and Northern Ireland are presented.

Results
Producers recognised the benefit of the utilisation of MI data as a health and welfare diagnostic tool. This acknowledgment, however, was undermined for some by dissatisfaction with the current system of MI information feedback, by trust and fairness concerns, and by concerns regarding the extent to which data would be used in the producers’ interests. Tolerance of certain animal welfare issues may also have a negative impact on how producers viewed the potential of MI data. The private veterinary practitioner was viewed as playing a vital role in assisting them with the interpretation of MI data for herd health planning.

Conclusions
The development of positive relationships based on trust, commitment and satisfaction across the supply chain may help build a positive environment for the effective utilisation of MI data in improving pig health and welfare. The utilisation of MI as a diagnostic tool would benefit from the development of a communication strategy aimed at building positive relationships between stakeholders in the pig industry.

Relevância:

80.00% 80.00%

Publicador:

Resumo:

Com o presente trabalho pretende-se discutir a importância do DNA na resolução de casos de investigação forense. O Homem, desde os tempos mais remotos tem revelado interesse na confirmação da identidade dos seus semelhantes, pelo desenvolvimento e prática de diversas técnicas de identificação. A partir de uma revisão da literatura, fez-se o estudo dos métodos de identificação humana, sendo este mais aprofundado no que diz respeito ao DNA. Frequentemente são encontrados corpos em que a única peça disponível para o processo de identificação é o dente. As peças dentárias são as estruturas mais resistentes e estáveis do corpo humano, mantendo as suas características e propriedades por longos períodos de tempo pós-morte. A análise do DNA contribui de forma muito importante para os processos de reconhecimento humano, principalmente em casos em que outros métodos de identificação falham devido a decomposição, fragmentação, incineração ou inexistência de dados comparativos ante-morte. Para a obtenção de um perfil genético é necessário executar as seguintes etapas: extração do DNA, sua quantificação e amplificação seguida de análise de determinadas regiões do genoma. Nos dias de hoje, muitos casos de identificação necessitam de uma abordagem multidisciplinar, isto porque em algumas situações existe falta de material padrão ou, por outro lado, pode haver mais do que uma evidência a ser examinada.

Relevância:

80.00% 80.00%

Publicador:

Resumo:

Some quality defects can cause changes in attributes of the meat, among these we can detach the PSE meat (Pale, Soft and Exudative). The PSE meat is pale, flaccid and exudative and result from sudden pH decrease while the carcass is still under high temperature. The identification of PSE meat has been done by measuring pH and L* (Lightness). However, studies suggest that a more precise evaluation of the kinetics of pH and temperature decrease has to be conducted to better understand the etiology of PSE meat in poultry. The aim of this study was to obtain the glycolytic curve for normal and PSE meat of chicken, through the pH, L* and CRA (water holding capacity) analysis. This experiment was conducted with carcasses obtained from a commercial slaughterhouse (n = 35) of Cobb lineage, 50 days old, from the same batch of creation and with the same pre-slaughter fasting time (10h). Samples of breast fillets were obtained from carcasses randomly collected immediately at the output of pre-cooling chiller, and the analysis of pH, temperature and L * were conducted in the same in times 1h35, 2h35, 3h35, 5h35, 8h35, 11h35, 14h35, 17h35, 20h35, 23h35 and 25h35 post mortem. The CRA analyzes were performed at the time of 25h35 post mortem. The pH measurements indicated that only from the 04 time (8h35 post mortem) was possible to verify an indicative of stabilization, being that PSE meat pH was 5,69±0,07, and normal meat was 5,93±0,09. The final pH (25h35 post mortem) was 5,98±0,06 and L* 57,30± 2,39 for normal meat, while for PSE meat the result was 5,72±0,06 and L* 59,44±1,51. To CRA, the average of the samples (67,19±3.13 and 64,45± 2.66) showed a difference between the normal chicken fillets and PSE respectively. The data found in this study are consistent with those reported by own research group in another slaughterhouse and contradicts similar works, but made at room temperature, indicating that for chickens under commercial conditions the resolution of rigor mortis occurs after 8h35 post mortem.

Relevância:

80.00% 80.00%

Publicador:

Resumo:

Quando si parla di shelf life di un prodotto alimentare si fa riferimento al periodo di tempo durante il quale un prodotto mantiene le sue caratteristiche qualitative nelle normali condizioni di conservazione/utilizzo e di conseguenza può essere consumato in totale sicurezza. Gli alimenti, infatti, sono prodotti facilmente deperibili che subiscono modifiche a carico della loro composizione a causa dell’innesco di una serie di reazioni sia di tipo microbiologico che chimico-fisico, con i conseguenti rischi per la sicurezza igienico sanitaria del prodotto. Nei prodotti ittici la degradazione biologica risulta essere una delle prime cause di deterioramento dell’alimento ciò perché essi stessi sono caratterizzati dalla presenza di microrganismi provenienti principalmente dalle materie prime impiegate e dal processo di produzione/preparazione utilizzato. Durante la conservazione e lo stoccaggio del prodotto ittico, in particolare sono tre i meccanismi che determinano il deterioramento e quindi la riduzione della shelf life, ovvero: l’autolisi enzimatica (post mortem e che modifica la consistenza del tessuto muscolare favorendo inoltre la crescita microbica ed il rilascio di ammine biogene); l’ossidazione (che riduce le qualità organolettiche del prodotto alterando gli acidi grassi poliinsaturi); la crescita microbica (con produzione di metaboliti come ammine biogene, acidi organici, solfiti, alcool, aldeidi e chetoni che causano i cattivi odori) (Jiang et al. 1990, Koohmaraie M., 1996, Koutsoumanis& Nychas, 1999, Aoki et al., 1997; Bremner, 1992). Risulta quindi strategico, il poter determinare la conservabilità di un alimento verificando dal punto di vista quantitativo, come tutti i fattori che contribuiscono all’alterazione della qualità del prodotto e all’incremento del processo degradativo (popolazione microbica, attività enzimatiche, variazioni chimiche) varino nel tempo.