HOVERING CHARACTERISTICS OF A ROTOR HAVING AN AIRFOIL SECTION DESIGNED FOR AUTILITY TYPE OF HELICOPTER

Hovering characteristics of rotor having airfoil section designed for utility type helicopte

A note on the effect of post-mortem maturation on colour of bovine Longissimus dorsi muscle

peer-reviewedFinancial support to P.G. Dunne was provided under the Walsh Fellowship programme of Teagasc.Fifteen heifers were housed and fed a concentrate diet while 54 counterparts grazed at pasture for 90 days at which stage six heifers from each group were slaughtered. The remaining animals in the pasture group were then housed and offered either: concentrate only; concentrate plus grass silage with silage accounting for either 20% or 50% of the total dry matter offered; or zero-grazed grass plus concentrate with grass accounting for 83% of the dry matter offered. Heifers (3/diet) were slaughtered 28, 56, 91 and 120 days thereafter. Colour characteristics of M. longissimus dorsi (LD) were measured at 48 h post mortem. The LD was then vacuum-packaged and stored at between 0 and 4 °C in darkness for 12 days, when colour characteristics were again measured. Maturation of LD resulted in meat that had higher redness values (‘a’ value; P<0.001) and a more intense red colour (higher ‘C’ value; P<0.001) at 14 days post mortem than at 2 days, regardless of diet/duration of feeding. Maturation also resulted in a brighter colour (higher ‘L’ value; P<0.001) but this difference was greatest when cattle were slaughtered the day-56 time point

Roads and traffic authority of new south Wales v dederer: Negligence and the exuberance of youth

This case note examines the decision of the High Court of Australia in Roads and Traffic Authority of New South Wales v Dederer, which marks the common law's continued departure from shared liability for tragic accidents into the realm of personal liability. The decision has particular significance for children and young people who may be held accountable for their reckless actions, notwithstanding the 'exuberance of youth'. In particular, the case note analyses the High Court's emphasis on obvious risks and personal responsibility and the Court's attempt to limit liability through a consideration of the plaintiff's conduct on questions of the scope of the duty of care and at the breach of duty enquiry, rather than confining it to the issue of the plaintiff's contributory negligence

Confirmation of the Dietary Background of Beef from its Stable Isotope Signature

End of project reportConsumers are increasingly demanding information on the authenticity and source of the food they purchase. Molecular DNA-based technology allows animal identification, but without certification or a “paper-trail” but does not provide information about feed history or the production system under which the animal was reared. The stable isotopes of chemical elements (e.g.13C/12C, 15N/14N) are naturally present in animal tissue and reflect the isotopic composition of the diet. The overall aim of this project was to determine the feasibility of using the stable isotopic composition as an intrinsic, biochemical marker to gain information about feed components used in the production of beef. Factors likely to affect the isotopic signature such as source of tissue, duration of feeding and production systems were examined. It is expected that this highly innovative and original technique will permit the identification of country of origin and dietary history of beef and so greatly assist efforts to market Irish beef, particularly in lucrative European markets. Sequential sampling and stable isotope analysis of bovine tail hair and hoof revealed that the two tissues can provide a detailed and continuous record of animal dietary history. Because hair can be sampled repeatedly and noninvasively, we anticipate that this approach will also prove useful for the investigation of short-term wildlife movements and changes in dietary preferences

Effective C2 Comms to the Tactical Edge in Challenged, Disrupted, and Denied Environments

Native IP networks are ill-equipped to handle the communication challenges found in wireless comms environments, resulting in communications outages that degrade C2 data flow and subject the user to disconnection, timeouts, and repeated login requests. We counter these limitations by integrating DTN (Disruption-Tolerant Networking) technology into the IP network using software+hardware or software-only solutions as appropriate. This work evaluates the tradeoffs between the currently available DTN software implementations and seeks to identify the one with the highest technical readiness level, as well as any barriers to adoption that may be present. We find that no current implementation is fully ready, and that each have particular pros and cons to adoption.Naval Research ProgramPrepared for Topic Sponsor: Maj Jeffrey Sykes, USMC, HQMC Aviation; Research Sponsor HQMC Aviation; Research POC Name: Maj Scott CuomoN16-M343-

Developing a Diet Authentication System from the Composition of Meat in Ruminants

As consumer interest in the link between diet and human health and in the ethics of food production increases assurances about the background origin of food are sought. In the case of animal-derived foods, such as meat, the animal’s diet is an intrinsic component of the food’s production and of its subsequent nutritional quality. Thus, there is a need to develop ways of validating the authenticity of the animal diet. Among the approaches to authenticate the background diet of ruminants is the measurement of components in meat (muscle and adipose tissue) and other tissues that are directly influenced by the diet, including fatty acids, carotenoids, vitamins, volatile organic compounds and elemental stable isotope ratios, as well as measurement of indirect indices such as spectral properties. While each is useful in its own right, the reliability of different measurements, for diet authentication purposes, depends on the sensitivity of the analytes measured to changes in diet, and on tissue turnover in response to changes in dietary constituents. Of the analyses discussed, stable isotope analysis in muscle and incremental tissues is presented as a particularly powerful tool for diet reconstruction