Quantum Chaos in the Yang-Mills-Higgs System at Finite Temperature

The quantum chaos in the finite-temperature Yang-Mills-Higgs system is studied. The energy spectrum of a spatially homogeneous SU(2) Yang-Mills-Higgs is calculated within thermofield dynamics. Level statistics of the spectra is studied by plotting nearest-level spacing distribution histograms. It is found that finite temperature effects lead to a strengthening of chaotic effects, i.e. spectrum which has Poissonian distribution at zero temperature has Gaussian distribution at finite-temperature.Comment: 6 pages, 5 figures, Revte

Changes in EMG activity during clenching in chronic pain patients with unilateral temporomandibular disorders

[Abstract] The study assessed the differences in electromyographic (EMG) activity recorded during clenching in women with chronic unilateral temporomandibular disorders (TMDs) as compared to control subjects. Seventy-five full dentate, normo-occlusion, right-handed, similarly aged female subjects were recruited. Twenty five subjects presented with right side TMD, 25 presented with left side TMD and 25 pain-free control subjects participated. Using integrated surface EMG over a 1 s contraction, the anterior temporalis and masseter muscles were evaluated bilaterally while subjects performed maximum voluntary clenching. Lower EMG activation was observed in patients with TMD as compared to control subjects (temporalis: 195.74 ± 18.57 vs. 275.74 ± 22.11, P = 0.011; masseters: 151.09 ± 17.37 vs. 283.29 ± 31.87, P < 0.001). An asymmetry index (SAI) was calculated to determine ratios of right to left sided activation. Patients with right-sided TMD demonstrated preferential use of their left-sided muscles (SAI −5.35 ± 4.02) whereas patients with left-sided TMD demonstrated preferential use of their right-sided muscles (SAI 6.95 ± 2.82), (P = 0.016). This unilateral reduction in temporalis and masseter activity could be considered as a specific protective functional adaptation of the neuromuscular system due to nociceptive input. The asymmetry index (SAI) may be a useful measure in discriminating patients with right vs. left-sided TMD.Galicia. Consellería de Cultura, Educación e Ordenación Universitaria; Grant 9/7/1996/DOG/22/7/199

Corporate Governance, Ownership Structures and IT Investments. An Institutional approach.

The research aims to highlight the relationships of traditional and new ownership structures on information technology (IT) investments for firms listed on Iberoamerican stock markets after a global crisis. The study uses a neo-institutional economic framework to show the corporate governance’s changes through institutional logic of ownership structures as well as IT investments growth in Iberoamerica. A literature review considers the relevance of concentrated ownership, top foreign ownership and common ownership of new institutional investors. The research design is a non-experimental longitudinal study with an annual panel data from 2009 to 2015, using 2,156 firm-year observations listed in stock market of Chile, Colombia, Mexico, Peru (MILA) and Spain (IBEX). The findings show that IT investment growth is negatively affected by concentrated ownerships and top foreign ownership, this last as unexpected situation, while it is positively affected by the new institutional investors. The contribution is to expand this research topic as continuing and permanent discussion of academics on corporate governance closer to IT approach, and vice versa

Jaw biodynamic data for 24 patients with chronic unilateral temporomandibular disorder

This study assessed 24 adult patients, suffering from severe chronic unilateral pain diagnosed as temporomandibular joint (TMJ) disorder (TMD). The full dentate patients had normal occlusion and had never received an occlusal therapy, i.e., were with natural dental evolution/maturation. The following functional and dynamic factors were assessed: (1) chewing function; (2) TMJ remodeling or the condylar path (CP); and (3) lateral jaw motion or lateral guidance (LG). CPs were assessed using conventional axiography, and LG was assessed by K7 jaw tracking. Seventeen (71%) of the 24 (100%) patients consistently showed a habitual chewing side. The mean (standard deviation [SD]) of the CP angles was 47.90 (9.24) degrees. The mean (SD) of the LG angles was 42.95 (11.78) degrees. Data collection emerged from the conception of a new TMD paradigm where the affected side could be the habitual chewing side, the side with flatter lateral jaw motion or the side with an increased CP angle. These data may lead to improved diagnosis, therapy plans and evolution in TMD patients

Técnica alternativa para reduzir a perda de medicação durante injeção intravítrea

PURPOSE: To describe an intravitreal injection technique using a commercially available 29-gauge insulin needle syringe (29GN syringe) and a 21-gauge (G) needle, comparing compound waste associated with this technique application and the one described in ranibizumab (Lucentis®) kit instructions. METHODS: Ten 0.3 ml doses of distilled water were aspirated using the 29GN syringe and 21G needle (PT technique), and another ten equal doses were aspirated employing the sterilized Lucentis® kit (LK technique), which contains a 1ml tuberculin syringe, a 18G needle for compound aspiration and a 30G needle for intravitreal injection. For aspiration using the PT technique, a 21G needle is attached over a 29GN syringe. After compound aspiration, the 21G needle is removed and intravitreal injection is performed using the 29G needle. Using a precision balance, the aspiration needles (21G for PT; 18G for LK) were weighed before and after water aspiration and the syringe-needle complexes for injection (29GN for PT; 30G for LK) were weighed before aspiration and after emptying them. The volumes left in the aspiration needles and needle-syringe complexes were estimated by the difference in weight in grams, which were converted to millilitres. RESULTS: The mean (±SD) residual volume (ml) of aspiration needles (21G for PT; 18G for LK) was significantly lower with PT technique (0.0034 ± 0.0016) when compared to LK tech nique (0.0579 ± 0.0011) (p<0.01). The mean (±SD) residual volume (ml) of syringe-needle complexes was significantly lower with PT technique (0.0056 ± 0.0011) than with LK (0.0906 ± 0.003 ml) (p<0.01). CONCLUSION: The proposed technique is a reasonable alternative for minimizing medication loss during intravitreal injection procedures.OBJETIVO: Descrever técnica de injeção intravítrea utilizando agulha-seringa de 29 gauge (seringa 29GN) e agulha 21 gauge (G) comercialmente disponíveis, comparando perda de composto associada à aplicação desta técnica com a descrita nas instruções do kit do ranibizumabe (Lucentis®). MÉTODOS: Dez doses de 0,3 ml de água destilada foram aspiradas com a seringa 29GN e a agulha 21G (técnica PT) e outras dez doses iguais foram aspiradas utilizando-se o kit do Lucentis® (técnica LK). Para aspiração com a técnica PT, a agulha 21G é colocada sobre a seringa 29GN. Depois da aspiração, a agulha 21G é removida e a injeção intravítrea é realizada com a agulha 29G. A técnica LK utiliza seringa de tuberculina de 1 ml acoplada a agulha 18G para aspiração e agulha 30G para injeção intravítrea. Usando balança de precisão, as agulhas de aspiração (21G para PT; 18G para LK) foram pesadas antes e depois da aspiração da água e os complexos agulha-seringa para injeção (29GN para PT; 30G para LK) foram pesados antes da aspiração e após serem esvaziados. Os volumes restantes nas agulhas de aspiração e complexos agulha-seringa foram estimados pela diferença dos pesos em gramas com conversão para mililitros. RESULTADOS: O volume (ml) residual médio (±DP) das agulhas de aspiração (21G para PT; 18G para LK) foi significativamente menor com a técnica PT (0,0034 ± 0,0016) quando comparado à técnica LK (0,0579 ± 0,0011) (p<0,01). O volume (ml) residual médio (±DP) dos complexos agulha-seringa foi significativamente menor com a técnica PT (0,0056 ± 0,0011) do que LK (0,0906 ± 0,003 ml) (p<0,01). CONCLUSÃO: A técnica de injeção proposta é uma alternativa razoável para minimizar perda de medicação durante aplicação de injeções intravítreas

Studies of release properties of ISOLDE targets

Off-line release rates of Be, Mg, S, Mn and Kr from refractory materials were studied. Mn yields were determined from a ZrO2 target and Kr yields from a SrO and ZrO2 targets. A Monte Carlo code to optimize ISOLDE targets was introduced

Avaliação do teor de carotenoides totais em acessos do banco ativo de germoplasma da Embrapa.

mandioca (Manihot esculenta Crantz) é considerada um alimento tradicional para muitas populações. Nas regiões que sofrem com a carência de vitamina A, a mandioca com a cor da polpa amarelada pode ser importante por conter o &#946;-caroteno em sua raiz

Three combinations of clonidine in association with tiletamine-zolazepam for anaesthesia induction in rats: evaluation of reflexes and pain sensibility

The aim of this study was to assess the combination of tiletamine-zolazepam (Zoletil 20\uae) with three different doses of clonidine for general anaesthesia induction in rats submitted to vascular microsurgery. The evaluation of anaesthetic and analgesic effects was performed in 30 Wistar rats randomly divided into three groups and induced with Zoletil 20 [90 mg/kg Intraperitoneal (IP)] associated with three different doses of clonidine (60\u201390\u2013120 \u3bcg/kg IP). Four clinical parameters were evaluated after induction: loss of righting reflex, voluntary movement, the pedal withdrawal response, and pain sensitivity tested by pinching the tail. The combination of Zoletil with 90 and 120 \u3bcg/kg of clonidine provided a surgical anaesthesia; however, 90 \u3bcg/kg of clonidine provided the most rapid anaesthesia induction, as confirmed by data obtained by clinical evaluation of the loss of the pedal withdrawal response and the absence of the tail pinch response. The increase in dose of clonidine did not lead to a more rapid action of the \u3b12 agonist, probably due to achievement of a dose-dependent plateau