670 research outputs found

    Intertarsal Joint Stabilization in a Bateleur Eagle (Terathopius ecaudatus) Using a Novel Application of a Braided Suture and Titanium Button System.

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    A 32-year-old adult captive male bateleur eagle (Terathopius ecaudatus) with a history of laxity, degenerative joint disease, and varus deviation of the distal left hindlimb for several years was presented for evaluation of left hindlimb lameness and was diagnosed with chronic subluxation of the left intertarsal joint. After failing to improve with conservative management and pain medication, surgical stabilization of the joint was performed using a novel application of a braided suture and titanium button system. Unsatisfactory clinical improvement and postsurgical reevaluation indicated that the initial surgical stabilization was unsuccessful. The surgery was repeated, and the animal showed postsurgical improvement in intertarsal joint stability, weight-bearing, and lameness for a period of several years with use and adjustment of chronic pain medications. The novel surgical technique described in this case report represents an additional treatment option for management of avian intertarsal joint subluxations. Presurgical planning should consider the unique anatomic features and variability of the avian tarsometatarsus to avoid surgical complications

    Quantum incompressibility of a falling Rydberg atom, and a gravitationally-induced charge separation effect in superconducting systems

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    Freely falling point-like objects converge towards the center of the Earth. Hence the gravitational field of the Earth is inhomogeneous, and possesses a tidal component. The free fall of an extended quantum object such as a hydrogen atom prepared in a high principal-quantum-number stretch state, i.e., a circular Rydberg atom, is predicted to fall more slowly that a classical point-like object, when both objects are dropped from the same height from above the Earth. This indicates that, apart from "quantum jumps," the atom exhibits a kind of "quantum incompressibility" during free fall in inhomogeneous, tidal gravitational fields like those of the Earth. A superconducting ring-like system with a persistent current circulating around it behaves like the circular Rydberg atom during free fall. Like the electronic wavefunction of the freely falling atom, the Cooper-pair wavefunction is "quantum incompressible." The ions of the ionic lattice of the superconductor, however, are not "quantum incompressible," since they do not possess a globally coherent quantum phase. The resulting difference during free fall in the response of the nonlocalizable Cooper pairs of electrons and the localizable ions to inhomogeneous gravitational fields is predicted to lead to a charge separation effect, which in turn leads to a large repulsive Coulomb force that opposes the convergence caused by the tidal, attractive gravitational force on the superconducting system. A "Cavendish-like" experiment is proposed for observing the charge separation effect induced by inhomogeneous gravitational fields in a superconducting circuit. This experiment would demonstrate the existence of a novel coupling between gravity and electricity via macroscopically coherent quantum matter.Comment: `2nd Vienna Symposium for the Foundations of Modern Physics' Festschrift MS for Foundations of Physic

    New Product Development Processes in The Australian FMCG Industry.

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    This paper presents a study of new product development (NPD) processes in two large Australian organisations (National Foods and Lion Nathan) involved in the production of fast moving consumer goods. The research utilises the Australian Business Excellence Framework as a research lens for exploring NPD processes with a focus on the role of sales and operations management. A case study approach used data collected from employees in the two organisations who were involved the NPD process. The results showed a number of significant differences between the two organisations in the conduct and the effectiveness of their NPD processes. Although both organisations employed a formal Stage-Gate process, Lion Nathan did this more successfully than National Foods, perhaps because of Lion Nathanā€™s greater experience with using stage-gate methodology. This study highlights the importance of the role of sales and operation planning, especially in relation to collaborative demand forecasting. The importance of the leadership role was also evident particularly in relation to ensuring measurement, review, and improvement of NPD processes

    Estimation of the Probability of Error without Ground Truth and Known A Priori Probabilities

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    The probability of error or, alternatively, the probability of correct classification (PCC) is an important criterion in analyzing the performance of a classifier. Labeled samples (those with ground truth) are usually employed to evaluate the performance of a classifier. Occasionally, the numbers of labeled samples are inadequate, or no labeled samples are available to evaluate a classifier\u27s performance; for example, when crop signatures from one area from which ground truth is available are used to classify another area from which no ground truth is available. This paper reports the results of an experiment to estimate the probability of error using unlabeled test samples (i.e., without the aid of ground truth)

    Can a charged ring levitate a neutral, polarizable object? Can Earnshaw's Theorem be extended to such objects?

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    Stable electrostatic levitation and trapping of a neutral, polarizable object by a charged ring is shown to be theoretically impossible. Earnshaw's Theorem precludes the existence of such a stable, neutral particle trap.Comment: 11 pages, 1 figur

    Effects of 28 days of resistance exercise while consuming commercially available pre- and post-workout supplements, NO-ShotgunĀ® and NO-SynthesizeĀ® on body composition, muscle strength and mass, markers of protein synthesis, and clinical safety markers in males

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    <p>Abstract</p> <p>Purpose</p> <p>The effects of 28 days of heavy resistance training while ingesting the pre- and post-workout supplements, NO-Shotgun<sup>Ā® </sup>and NO-Synthesize<sup>Ā® </sup>were determined on body composition, muscle strength and mass, markers of protein synthesis, and clinical safety markers.</p> <p>Methods</p> <p>Nineteen non-resistance-trained males participated in a resistance training program 4 times/week for 28 days while either ingesting 27 g/day of carbohydrate (CARB) or NO-Shotgun<sup>Ā® </sup>30 min pre-exercise and 27 g/day of carbohydrate or NO- Synthesize<sup>Ā® </sup>30 min post-exercise (NOSS). Data were analyzed with separate 2 Ɨ 2 ANOVA (p < 0.05).</p> <p>Results</p> <p>Total body mass was increased in both groups (p = 0.001), but not different between groups. Fat mass was unchanged with CARB, but NOSS decreased fat mass (p = 0.026). Both groups increased fat-free mass (p = 0.001); however, the increases were greater with NOSS (p = 0.023). NOSS underwent greater increases in upper-body (p = 0.023) and lower-body (p = 0.035) strength than CARB. Myofibrillar protein significantly increased in both groups (p = 0.041), with NOSS being greater than CARB (p = 0.049). All of the MHC isoforms were significantly increased in both groups; however, NOSS was greater than CARB for MHC 1 (p = 0.013) and MHC 2A (p = 0.046). All of the myogenic regulatory factors were significantly increased in both groups; however, NOSS was greater than CARB for Myo-D (p = 0.038) and MRF-4 (p = 0.001). For the whole blood and serum clinical chemistry markers, all variables remained within normal clinical ranges.</p> <p>Conclusions</p> <p>Heavy resistance training for 28 days, with NO-Shotgun<sup>Ā® </sup>and NO-Synthesize<sup>Ā® </sup>ingested before and after exercise, respectively, significantly improved body composition and increased muscle mass and performance without abnormally impacting any of the clinical chemistry markers.</p

    Hunter-gatherer health and development policy: How the promotion of sedentism worsens the Agta's health outcomes

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    Many hunter-gatherer groups live on the outskirts of wider society, experiencing poor health outcomes with little access to medical care. From a development perspective, key interventions include the sedentarisation of these mobile peoples into camps nearby larger towns with sanitation infrastructure and medical care, as increased access to services is assumed to improve outcomes. However, recent research in the Agta (Philippine foragers from North-east Luzon) has demonstrated that individuals residing in more ā€˜developedā€™ communities suffer from increased morbidity and mortality. Here, using quantitative and ethnographic data on health collected between 2002 and 2014, we explore why this trend occurs by examining the relationship between key development initiatives with self-reported illness and the uptake of medical interventions with 415 Agta men, women and children. We demonstrate that health outcomes worsen as sedentarisation progresses, despite some increases in medical access. We argue this is because the development paradigm is not evidence-based, but rather stems from an ideological dislike of mobile hunter-gatherer lifestyles. Compounded by cultural insensitivity and daily discrimination, current interventions are ill-suited to the unique needs of hunter-gatherers, and thus ineffective. Based on our findings we offer future short and long-term policy suggestions which seek to reduce the Agta's vulnerability, rather than increase it
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