Characterization of heat waves affecting mortality rates of broilers between 29 days and market age

Climate may affect broiler production, especially where there are heat waves, which may cause high mortality rates due to the heat stress. Heat wave prediction and characterization may allow early mitigation actions to be taken. Data Mining is one of the tools used for such a characterization, particularly when a large number of variables is involved. The objective of this study was to classify heat waves that promote broiler chicken mortality in poultry houses equipped with minimal environmental control. A single day of heat, a heat-shock day, is capable of producing high broiler mortality. In poultry houses equipped with fans and evaporative cooling, the characterization of heat waves affecting broiler mortality between 29 days of age and market age presented 89.34% Model Accuracy and 0.73 Class Precision for high mortality. There was no influence on high mortality (HM) of birds between 29 and 31 days of age. Maximum temperature humidity index (THI) above 30.6 ºC was the main characteristic of days when there was a heat wave, causing high mortality in broilers older than 31 days. The high mortality of broilers between 31 and 40 days of age occurred when maximum THI was above 30.6 ºC and maximum temperature of the day was above 34.4 ºC. There were two main causes of high mortality of broilers older than 40 days: 1) maximum THI above 30.6 ºC and minimum THI equal or lower than 15.5 ºC; 2) maximum THI above 30.6 ºC, minimum THI lower than 15.5 ºC, and the time of maximum temperature later than 15:00h. The heat wave influence on broiler mortality lasted an average of 2.7 days.

The TOMO-ETNA experiment: an imaging active campaign at Mt. Etna volcano. Context, main objectives, working-plans and involved research projects

The TOMO-ETNA experiment was devised to image of the crust underlying the volcanic edifice and, possibly, its plumbing system by using passive and active refraction/reflection seismic methods. This experiment included activities both on-land and offshore with the main objective of obtaining a new high-resolution seismic tomography to improve the knowledge of the crustal structures existing beneath the Etna volcano and northeast Sicily up to Aeolian Islands. The TOMO ETNA experiment was divided in two phases. The first phase started on June 15, 2014 and finalized on July 24, 2014, with the withdrawal of two removable seismic networks (a Short Period Network and a Broadband network composed by 80 and 20 stations respectively) deployed at Etna volcano and surrounding areas. During this first phase the oceanographic research vessel “Sarmiento de Gamboa” and the hydro-oceanographic vessel “Galatea” performed the offshore activities, which includes the deployment of ocean bottom seismometers (OBS), air-gun shooting for Wide Angle Seismic refraction (WAS), Multi-Channel Seismic (MCS) reflection surveys, magnetic surveys and ROV (Remotely Operated Vehicle) dives. This phase finished with the recovery of the short period seismic network. In the second phase the Broadband seismic network remained operative until October 28, 2014, and the R/V “Aegaeo” performed additional MCS surveys during November 19-27, 2014. Overall, the information deriving from TOMO-ETNA experiment could provide the answer to many uncertainties that have arisen while exploiting the large amount of data provided by the cutting-edge monitoring systems of Etna volcano and seismogenic area of eastern Sicily.

Behavioral and neuroimaging research of reading: A case of Japanese

Behavioral studies showed that AS, an English-Japanese bilingual was a skilled reader in Japanese but was a phonological dyslexic in English. This behavioral dissociation was accounted for by the Hypothesis of Transparency and Granularity postulated by Wydell & Butterworth. However, a neuroimaging study using MEG (magnetoencephalography) revealed that AS has the same functional deficit in the left superior temporal gyrus (STG). This paper therefore offers an answer to this intriguing discrepancy between the behavioral dissociation and the neural unity in AS by reviewing existing behavioral and neuroimaging studies in alphabetic languages such as English, Finnish, French, and Italian, and nonalphabetic languages such as Japanese and Chinese.

Technological, institutional and market structure changes as evolutionary processes: the case of the Port Wine sector (1680-1974).

Doutoramento em Economia.

Carbon Nexus at Deakin University: a globally unique carbon fiber and composite research facility in Australia

Carbon Nexus, the new cutting-edge open-access carbon fiber and composites research facility at Deakin University, recently commenced operations. The two carbon fiber processing lines are allowing researchers to investigate new methods for manufacturing carbon fiber which can lower energy inputs, maximise output, and increase fiber performance. The lines are also enabling industrial partners to validate new technologies at industrial scale. With a focused research program driven by a cross-functional research team, Carbon Nexus aims to reduce the cost of producing carbon fiber and increase the rate of manufacturing composite parts.

Constructive alignment and the research skills development framework: Using theory to practically align graduate attributes, learning experiences, and assessment tasks in undergraduate midwifery

Midwifery educators have to provide students with stimulating curricula that teach academic and vocational content, as well as transferable skills. The Research Skills Development (RSD) framework provides a conceptual model that allows educators to explicitly scaffold the development of their students’ research skills. This paper aims to demonstrate the effective use of the RSD framework and constructive alignment theory to redesign a second-year Midwifery assessment task.The assessment task was changed into a scenario-based question to better reflect the unit learning objectives and expected graduate attributes. Students were provided with extra time in class to explore the assessment task in a peer environment. Following the return of their assessments, students were asked to complete a questionnaire to evaluate the effectiveness of the assessment redesign. We show that using a constructively aligned scenario-based assessment task in a second year unit more successfully articulated the expected graduate attributes of midwives. Qualitative and quantitative feedback suggested that students and staff appreciated a more clinically- relevant assessment task. This paper demonstrates that the use of the RSD framework to constructively aligngraduate attributes, learning experiences, and assessment tasks allows for the transformation of undergraduate assessment into a learning experience relevant to clinical practice.

Sensory and consumer research update : Mental imagery as an olfactory training strategy

An extremely important component of descriptive analysis is training panellists to achieve consistent results. The effectiveness of mental imagery as a training strategy has been shown in several areas such as sport and music. In this study, researchers from the University of Bordeaux in France assessed if olfactory mental imagery could be a tool for training the olfactory capacities of panellists.

Sensory and consumer research update : Consumption of garlic positively affects body odour

Garlic is an integral part of European and Asian cuisines. It is appreciated for its flavour, and the consumption of garlic is associated with a wide range of health benefits throughout history. For instance, records from Ancient Egypt suggest that pyramid builders were fed garlic to acquire extra power. In the Roman Empire, garlic was used to treat gastrointestinal disorders, asthma, madness, tumours and worms.

Sensory and consumer research update : Umami to better balance emotional satisfaction from food

Monosodium glutamate, also known as sodium glutamate or MSG, is the sodium salt of glutamic-acid or glutamate, the most abundant naturally occurring non-essential amino-acids and can be found in many protein-rich food products such as meat, poultry, fish, eggs, dairy products and other plant sources. Glutamic-acid was discovered and isolated from wheat gluten and identified in the year 1866, by the German chemist Karl Heinrich Leopold Ritthausen.

Sensory and consumer research update : Sweet taste and diet

There is much attention on sugar in the food supply given the recent sugar tax in Britain. Sugar remains a controversial, yet much loved ingredient. A new comprehensive study from Deakin University Centre for Advanced Sensory Science (CASS) looked at the relationship between sweet taste function, diet and anthropometry among 60 adults. Low et al used six different sweeteners (glucose, fructose, sucrose, sucralose, erythritol, and Rebaudioside A) and measured detection, recognition threshold and perceived intensity of all the sweeteners in all subjects. They assessed diet in all subjects as well as height, weight and waist circumference.

Sensory and consumer research update : Eating with our ears

Sound is a less thought-about flavour sense; taste, smell, texture and even vision have a higher profile. But is sound an important flavour sense, or is the lack of research in the area a reflection that sound has limited importance?

Sensory and consumer research update : Is fat a taste and why is it important?

Fat has always been associated with texture, flavour release, and thermal properties in foods, but not the sense of taste. Yet as the taste system has evolved to detect the nutrients or toxins in foods prior to ingestion, it makes sense that fats, an essential energy-dense macronutrient, would be detected through taste, as other macronutrients, namely carbohydrates and proteins, are detected through the tastes of sweet and umami.

Sensory and consumer research update : Fancy a glass of sherry?

Researchers in Germany have identified the major aroma components of Amontillado sherry wine, which is aged through both a biological and an oxidative step. The researchers used Sensomics analysis, a molecular sensory approach in which key aroma compounds are differentiated from the bulk of odourless volatiles.