Evaluation of the measurement capabilities of an high performance commercial high resistance bridge by means of the comparison with two validated high resistance measurement methods

À l'Institut national de la métrologie de recherche (INRIM) ont réalisée une comparaison de mesure entre un pont de mesure de haute résistance électrique commerciale et deux méthodes de mesure de haute résistance électrique validés utilisé à l’INRIM. Ils ont procédé à une estimation de l'incertitude de mesure du pont à partir de 10 G jusqu'à 10 T. Quatre étalons de haute résistance de haut niveau à partir de 10 G jusqu'à 10 T ont été calibrés avec les trois méthodes de mesure. La compatibilité de ces mesures était bon. Quelques problèmes pour les mesures plus de 10 T et dans l'évaluation de l'incertitude de mesures du pont, cependant, restent en suspens

Implementing a perioperative efficiency initiative for orthopedic surgery instrumentation at an academic center: A comparative before-and-after study.

Optimizing surgical instrumentation may contribute to value-based care, particularly in commonly performed procedures. We report our experience in implementing a perioperative efficiency program in 2 types of orthopedic surgery (primary total-knee arthroplasty, TKA, and total-hip arthroplasty, THA).A comparative before-and-after study with 2 participating surgeons, each performing both THA and TKA, was conducted. Our objective was to evaluate the effect of surgical tray optimization on operating and processing time, cost, and waste associated with preparation, delivery, and staging of sterile surgical instruments. The study was designed as a prospective quality improvement initiative with pre- and postimplementation operational measures and a provider satisfaction survey.A total of 96 procedures (38 preimplementation and 58 postimplementation) were assessed using time-stamped performance endpoints. The number and weight of trays and instruments processed were reduced substantially after the optimization intervention, particularly for TKA. Setup time was reduced by 23% (6 minutes, P = .01) for TKA procedures but did not differ for THA. The number of survey respondents was small, but satisfaction was high overall among personnel involved in implementation.Optimizing instrumentation trays for orthopedic procedures yielded reduction in processing time and cost. Future research should evaluate patient outcomes and incremental/additive impact on institutional quality measures

PROTEIN EXPRESSION PROFILING ASSOCIATED TO BIOTIC STRESS IN MAIZE.

Plant biotic stresses are caused by pathogens, parasites, predators and their outcome results from interaction between, host, pathogen and environment. Pathogens attack could be due by several organisms as fungi, bacteria, viruses oomycetes, nematodes and insects that cause specific and systemic response. Two of the major pests affecting maize crop in Lombardy region are Fusarium verticillioides fungus and the Diabrotica virgifera virgifera LeConte insect. The etiology of two diseases is strictly interdependent, plant fungus infection is often deriving after kernel injuries by wounding or insect attack. F. veritillioides infection typically occurs on kernels, with a high level of fungal infection and micotoxin contamination. In resistant inbred maize genotype, kernel showed significant decrease of infection incidence, with limited amounts of total fumonisin content and reduced fungal growth. We attempt to identify protein involved in Fusarium resistance by protein profile resistant and susceptible lines. We found only two protein peaks at 5.79 and 14.96 Kda that were commonly expressed in the susceptible lines but no specific protein of interest were present in kernel from resistance lines. Only the susceptible line CO354, showed variation in the Late Embryogenesis Abundant LEA3 protein, previously described as protein associated to fungal resistance in maize. D. virgifera attack is prevalentely due by direct larvae infestation and damage to the maize root system. Plants respond to insect infestation by emitting volatile compounds among which the sequiterpene (E)-\u3b2-caryophillene that attracts natural enthomopathogenic nematodes. This volatile compound has been found in response to herbivore damage in several wild relatives of maize and in cultivated maize lines from European breeding programs but not in most lines from the North American breeding program. In order to understand mechanisms involved in defence response, maize lines that differ in (E)-\u3b2-caryophillene synthase expression were characterized by protein profiling and tps23 gene expression. We found that maize responds to methyl jasmonate treatment and D. virgifera infestation similarly by inducing the tps23 gene, but the jasmonate mediated response differs quantitative and temporary in different maize lines. Methyl jasmonate treatment induce also the expression of other three proteins i.e. actin-depolymerizing factor 3 ADF3, nucleotide pyrophosphatase/phosphodiesterase NPP and anionic peroxidase probably involved in maize herbivore insect response. Proteomic characterization of maize lines differing in response to pathogen attack may be a useful approach to better understand mechanisms involved in plant pathogen response and to find new markers associated to biotic stress response. The potential uses of these biomarkers in assisted breeding program however remain still under investigation

Efficiency implications of open source commonality and reuse

This paper analyzes the reuse choices made by open source developers and relates them to cost efficiency. We make a distinction between the commonality among applications and the actual reuse of code. The former represents the similarity between the requirements of different applications and, consequently, the functionalities that they provide. The latter represents the actual reuse of code. No application can be maintained for ever. A fundamental reason for the need for periodical replacement of code is the exponential growth of costs with the number of maintenance interventions. Intuitively, this is due to the increasing complexity of software that grows in both size and coupling among different modules. The paper measures commonality, reuse and development costs of 26 open-source projects for a total of 171 application versions. Results show that reuse choices in open-source contexts are not cost efficient. Developers tend to reuse code from the most recent version of applications, even if their requirements are closer to previous versions. Furthermore, the latest version of an application is always the one that has incurred the highest number of maintenance interventions. Accordingly, the development cost per new line of code is found to grow with reuse

Practical Applications of Electromyography for Strength Coaches: A Case Study of the Isometric Squat

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Squeezing Phase Diffusion

We address the use of optical parametric oscillator (OPO) to counteract phase diffusion, and demonstrate phase-noise reduction for coherent signals traveling through a suitably tuned OPO. In particular, we theoretically and experimentally show that there is a threshold value on the phase noise, above which OPO can be exploited to "squeeze" phase noise. The threshold depends on the energy of the input coherent state, and on the relevant parameters of the OPO, i.e., gain and input-output and crystal loss rates

(Des)tejer escenas de masculinidad hegemónica

El contexto pandémico construyó un escenario disruptivo en la forma de planificar, acceder, construir y crear producciones escénicas. Una instancia de excepcionalidad dicotómica, como afirma Judith Butler (2020, p.59) “nos piden secuestrarnos en unidades familiares, domicilios individuales (…) relegados a esferas de relativo aislamiento; por otro lado, nos enfrentamos a un virus que cruza rápidamente las fronteras, ajeno a la idea misma de del territorio nacional” La idea de pura individualidad parecía entremezclarse con la plena interconectividad. Desde una perspectiva situada (Haraway,1995) y a través de una metodología etnográfica, el trabajo pretende esbozar algunas notas preliminares en la construcción de producciones escénicas universitarias durante el 202113, poniendo foco en las formas, procedimientos y fugas previstas a la hora de construir masculinidad(es). En primer lugar se intentará definir en plano teórico el concepto masculinidad hegemónica (Conell, 1995) sus posibilidades y revisiones. La segunda instancia describirá algunas propuestas escénicas universitarias, entrenamientos y ejercitaciones que pongan en diálogo formas de resistencia a la hora de (des)tejer el concepto (en Mayúscula): Masculinidad, con el propósito de pensar y seguir con el problema (Haraway, 2019).Bellas Arte