Politics Of Life Itself And The Future Of Medical Practices: Dialogues With Nikolas Rose (part 3)

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Practical ultrasonographic technique to precisely identify and differentiate tendons and ligaments of the elbow at the level of the humeral epicondyles: anatomical study.

To develop a practical step-by-step technique to precisely identify and differentiate tendons and ligaments attaching to the humeral epicondyles, to confirm through gross anatomical study the accurate structure identification provided by this technique and to determine the frequency at which each structure can be identified in healthy volunteers. First, ten fresh frozen cadavers (6 men, age at death = 58-92 years) were examined by two musculoskeletal radiologists and a step-by-step technique for the identification of tendons and ligaments at the level of humeral epicondyles was developed. Second, the accurate identification of structures was confirmed through gross anatomical study including anatomical sections on five specimens and layer-by-layer dissection technique on five others. Finally, 12 healthy volunteers (6 men, average age = 36, range = 28-52) were scanned by two radiologists following the same technique. An ultrasonographic technique based on the recognition of bony landmarks and the use of ultrasonographic signs to differentiate overlapping structures was developed and validated through gross anatomical study. In healthy volunteers, most tendons and ligaments were identified and well-defined in ≥ 80% of cases, except for the extensor carpi radialis brevis and extensor digiti minimi tendons on the lateral epicondyle (having common attachments with the extensor digitorum communis) and the palmaris longus tendon on the medial epicondyle (absent, or common attachment with the flexor carpi radialis). A step-by-step approach to the ultrasonographic assessment of tendons and ligaments at the humeral epicondyles allowed accurate identification of and differentiation among these structures, in particular those relevant to pathological conditions

Development of a rapid and simple approach for kid carcass evaluation by vídeo image analysis.

objective of this work is the development of a simple and cost-effective video image analysis (VIA) system to evaluate kid carcass in small slaughter units. To achieve this objective a trial was conducted with 42 kid carcasses (6.6±2.6 kg) and models to predict carcass composition from VIA were established. While the carcasses were hanging in the gambrel an image of the dorsal view of each carcass was obtained with a digital camera (Sony, DCR-TRV460). For imaging, carcasses were placed in front of a non-glare black surface and illuminated with standard lighting. The camera was placed perpendicular to the carcass long axis. A total of 44 geometric measurements (linear and area) were obtained after carcass image analysis with the ImageJ 1.39J software

Renal Evaluation in Women with Preeclampsia

Background/Aims: Preeclampsia (PE) is a cause of glomerulopathy worldwide. Urinary retinol-binding protein (RBP) is a marker of proximal tubular dysfunction, albuminuria is an endothelial injury marker, urine protein:creatinine ratio (PCR) may have a predictive value for renal disease later in life, and, recently, podocyturia has been proposed as a sensitive tool in pregnancy, but it needs to be tested. The aim of this study was to evaluate renal involvement in PE and healthy pregnancy. Methods: Case-control study with 39 pregnant women assessed after 20 weeks of gestation (25 in the control group, CG, and 14 in the PE group) by performing urinary tests. Results: Mean (±SD) age and gestational age of the CG were 26.9 ± 6.4 years and 37.1 ± 5.0 weeks, and of the PE group 26.4 ± 6.9 years and 30.6 ± 5.6 weeks, respectively (p = 0.001). Mean (±SD) urinary RBP (p = 0.017), albuminuria (p = 0.002), and urinary albumin concentration (UAC) ratio (p = 0.006) of the CG were 0.4 ± 0.7 mg/l, 7.3 ± 6.9 mg/l, and 8.2 ± 6.7 mg/g and of the PE group 2.0 ± 4.4 mg/l, 2,267.4 ± 2,130.8 mg/l (p = 0.002), and 3,778.9 ± 4,296.6 mg/g (p = 0.006), respectively. Mean (±SD) urine PCR in the PE group was 6.7 ± 6.1 g/g (p Conclusions: Urinary RBP, PCR, albuminuria, and UAC ratio were elevated in the PE group in comparison to the CG. Podocyturia did not predict PE

Is anodal transcranial direct current stimulation a potential ergogenic resource for muscle strength and effort perception? A critical review

Nas últimas décadas, vários estudos estão investigando a dose-resposta ideal em termos de frequência, intensidade e volume de treinamento para alcançar o aumento da força muscular, tanto em atletas quanto em não atletas. A dose-resposta é fundamental para a prescrição do treinamento, uma vez que sua manipulação equivocada pode acarretar alto risco de desenvolvimento de lesões por esforços repetitivos, bem como pelo não desenvolvimento da força esperada. Em indivíduos com nível avançado de treinamento de força, é extremamente importante aumentar sua intensidade e volume de treinamento. Nesse sentido, com os avanços encontrados na área de treinamento de força e a necessidade de novas estratégias para otimizar ganhos de força, um novo método vem ganhando força na literatura, a estimulação transcraniana por corrente contínua (ETCC). Portanto, o objetivo deste estudo é analisar criticamente os efeitos do ETCC como potencial recurso ergogênico para a realização de força muscular e percepção de esforço, bem como se seu uso é ético ou não. Para tanto, foram pesquisadas as bases de dados Pubmed/Medline, ISI Web of Knowledge e Scielo, apenas em inglês, e com as palavras-chave: força muscular, resistência muscular, estimulação transcraniana por corrente contínua, ETCC. Nós comparamos o efeito do ETCC anódico (ETCC-a) com uma condição sham/controle nos resultados de ETCC para força muscular e percepção de esforço força muscular e percepção de esforço. Nenhum estudo menciona efeitos colaterais negativos da intervenção. Os dados mostram diferenças entre os estudos que investigam os estudos de avaliação da força muscular e resistência muscular, em termos do uso bem sucedido de ETCC. Estudos que investigaram a eficiência do ETCC na melhora da força muscular demonstraram efeitos positivos do ETCC-a em 66,7% dos parâmetros testados. Amaioria dos dados mostra consistentemente a influência do ETCC-a na força muscular, mas não no desempenho de resistênciaEn las últimas décadas, diversos estudios están investigando la dosis-respuesta ideal en cuanto a la frecuencia, intensidad y volumen de entrenamiento para alcanzar el aumento de fuerza muscular, sea en atletas y no atletas. La dosis-respuesta es fundamental para la prescripción de entrenamiento, pues su manipulación equivocada puede llevar a un alto de riesgo de desarrollo de lesiones por esfuerzo repetitivo, así como para el no desarrollo de la fuerza esperada. En sujetos con nivel avanzado de entrenamiento de fuerza es extremadamente importante aumentar su intensidad y volumen de entrenamiento. En este sentido, con los avances encontrados en el área de entrenamiento de fuerza y la necesidad de nuevas estrategias para optimizar las ganancias de fuerza, un nuevo método está ganando fuerza en la literatura, la estimulación transcraneal por corriente continua (ETCC). Por lo tanto, el objetivo del presente estudio es analizar de forma crítica los efectos de la ETCC como potencial recurso ergogénico al desempeño de fuerza muscular y percepción de esfuerzo, así como si su uso es ético o no. Por lo tanto, se realizó una búsqueda en las bases de datos Pubmed/Medline, ISI Web of Knowledge y Scielo, solamente en inglés y con las palabras clave: fuerza muscular, resistencia muscular, estimulación transcraneal de corriente continua, ETCC. Comparamos el efecto de la ETCC anódica (ETCC-a) a una condición sham/control sobre los resultados de la fuerza muscular y percepción de esfuerzo. Ningún estudio menciona efectos secundarios negativos de la intervención. Los datos muestran diferencias entre los estudios que investigan la fuerza muscular y los estudios de evaluación de resistencia muscular, en lo que se refiere al uso exitoso de la ETCC. Los estudios que investigan la eficiencia de la ETCC en la mejora de la fuerza muscular demuestran efectos positivos de la ETCC-a en el 66,7% de los parámetros probados. La mayoría de los datos muestran consistentemente influencia de la ETCC-a en la fuerza muscular, pero no en el rendimiento de resistencia.In the last decades, several studies are investigating the optimal dose-response in terms of frequency, intensity and volume of training to achieve increased muscle strength in both athletes and non-athletes. Dose-response is critical to the prescription of training, since its mismanagement may pose a high risk of developing repetitive strain injuries as well as failure to develop the expected strength. In individuals with advanced level of strength training, it is extremely important to increase their intensity and training volume. In this sense, with the advances in the area of strength training and the need for new strategies to optimize force gains, a new method is gaining strength in the literature, the transcranial direct current stimulation (tDCS). Therefore, the purpose of this study is to critically analyze the effects of tDCS as a potential ergogenic resource for achieving muscle strength and perceived exertion, as well as whether its use is ethical or not. To do so, we searched the databases Pubmed/Medline, ISI Web of Knowledge and Scielo, in English only, and with the keywords: muscle strength, muscular endurance, transcranial direct current stimulation, tDCS. We compared the effect of anodic tDCS (a-tDCS) with a sham/control condition on muscle strength and perceived exertion results. No study mentions the negative side effects of the intervention. The data show differences between studies investigating studies of muscle strength and muscle endurance in terms of the successful use of tDCS. Studies that investigated tDCS efficiency in improving muscle strength demonstrated positive effects of a-tDCS on 66.7% of the parameters tested. Most data consistently show the influence of a-tDCS on muscle strength, but not on resistance performance.info:eu-repo/semantics/publishedVersio

Phase Behavior of Bent-Core Molecules

Recently, a new class of smectic liquid crystal phases (SmCP phases) characterized by the spontaneous formation of macroscopic chiral domains from achiral bent-core molecules has been discovered. We have carried out Monte Carlo simulations of a minimal hard spherocylinder dimer model to investigate the role of excluded volume interations in determining the phase behavior of bent-core materials and to probe the molecular origins of polar and chiral symmetry breaking. We present the phase diagram as a function of pressure or density and dimer opening angle $\psi$. With decreasing $\psi$, a transition from a nonpolar to a polar smectic phase is observed near $\psi = 167^{\circ}$, and the nematic phase becomes thermodynamically unstable for $\psi < 135^{\circ}$. No chiral smectic or biaxial nematic phases were found.Comment: 4 pages Revtex, 3 eps figures (included

Photocatalytic Hydrogen Production Of Co(oh)2 Nanoparticle-coated α-fe2o3 Nanorings

The production of hydrogen from water using only a catalyst and solar energy is one of the most challenging and promising outlets for the generation of clean and renewable energy. Semiconductor photocatalysts for solar hydrogen production by water photolysis must employ stable, non-toxic, abundant and inexpensive visible-light absorbers capable of harvesting light photons with adequate potential to reduce water. Here, we show that α-Fe 2O3 can meet these requirements by means of using hydrothermally prepared nanorings. These iron oxide nanoring photocatalysts proved capable of producing hydrogen efficiently without application of an external bias. In addition, Co(OH)2 nanoparticles were shown to be efficient co-catalysts on the nanoring surface by improving the efficiency of hydrogen generation. Both nanoparticle-coated and uncoated nanorings displayed superior photocatalytic activity for hydrogen evolution when compared with TiO2 nanoparticles, showing themselves to be promising materials for water-splitting using only solar light. © The Royal Society of Chemistry 2013.51993109316Navarro Yerga, R.M., Álvarez Galván, M.C., Del Valle, F., Villoria De La Mano, J.A., Fierro, J.L.G., (2009) ChemSusChem, 2, pp. 471-485Fujishima, A., Honda, K., (1972) Nature, 238, pp. 37-38Kudo, A., Miseki, Y., (2009) Chem. Soc. Rev., 38, pp. 253-278Sivula, K., Le Formal, F., Gratzel, M., (2011) ChemSusChem, 4, pp. 432-449Yerga, R.M.N., Galvan, M.C.A., Del Valle, F., De La Mano, J.A.V., Fierro, J.L.G., (2009) ChemSusChem, 2, pp. 471-485Chen, X.B., Shen, S.H., Guo, L.J., Mao, S.S., (2010) Chem. Rev., 110, pp. 6503-6570Hernandez-Alonso, M.D., Fresno, F., Suarez, S., Coronado, J.M., (2009) Energy Environ. Sci., 2, pp. 1231-1257Kudo, A., (2003) Catal. Surv. Asia, 7, pp. 31-38Wender, H., Feil, A.F., Diaz, L.B., Ribeiro, C.S., Machado, G.J., Migowski, P., Weibel, D.E., Teixeira, S.R., (2011) ACS Appl. Mater. Interfaces, 3, pp. 1359-1365Khan, S.U.M., Al-Shahry, M., Ingler, W.B., (2002) Science, 297, pp. 2243-2245Sreethawong, T., Ngamsinlapasathian, S., Suzuki, Y., Yoshikawa, S., (2005) J. Mol. Catal. A: Chem., 235, pp. 1-11Li, Z.H., Chen, G., Tian, X.J., Li, Y.X., (2008) Mater. Res. Bull., 43, pp. 1781-1788Meng, F.K., Hong, Z.L., Arndt, J., Li, M., Zhi, M.J., Yang, F., Wu, N.Q., (2012) Nano Res., 5, pp. 213-221Pei, D.H., Luan, J.F., (2012) Int. J. Photoenergy, , 10.1155/2012/262831Sun, J.W., Liu, C., Yang, P.D., (2011) J. Am. Chem. Soc., 133, pp. 19306-19309Nann, T., Ibrahim, S.K., Woi, P.M., Xu, S., Ziegler, J., Pickett, C.J., (2010) Angew. Chem., Int. Ed., 49, pp. 1574-1577Higashi, M., Domen, K., Abe, R., (2011) Energy Environ. Sci., 4, pp. 4138-4147Maeda, K., Higashi, M., Siritanaratkul, B., Abe, R., Domen, K., (2011) J. Am. Chem. Soc., 133, pp. 12334-12337Ikeue, K., Shiiba, S., Machida, M., (2011) ChemSusChem, 4, pp. 269-273Yu, J.G., Yang, B., Cheng, B., (2012) Nanoscale, 4, pp. 2670-2677Yashima, M., Ogisu, K., Domen, K., (2008) Acta Crystallogr., Sect. B: Struct. Sci., 64, pp. 291-298Yan, Q., Zhu, J., Yin, Z., Yang, D., Sun, T., Yu, H., Hoster, H.E., Zhang, H., (2013) Energy Environ. Sci., 6 (3), pp. 987-993Tahir, A.A., Wijayantha, K.G.U., Saremi-Yarahmadi, S., Mazhar, M., McKee, V., (2009) Chem. Mater., 21, pp. 3763-3772Rangaraju, R.R., Panday, A., Raja, K.S., Misra, M., (2009) J. Phys. D: Appl. Phys., 42Satsangi, V.R., Kumari, S., Singh, A.P., Shrivastav, R., Dass, S., (2008) Int. J. Hydrogen Energy, 33, pp. 312-318Saremi-Yarahmadi, S., Vaidhyanathan, B., Wijayantha, K.G.U., (2010) Int. J. Hydrogen Energy, 35, pp. 10155-10165Lin, Y., Xu, Y., Mayer, M.T., Simpson, Z.I., McMahon, G., Zhou, S., Wang, D., (2012) J. Am. Chem. Soc., 134, pp. 5508-5511Kumar, P., Sharma, P., Solanki, A., Tripathi, A., Deva, D., Shrivastav, R., Dass, S., Satsangi, V.R., (2012) Int. J. Hydrogen Energy, 37, pp. 3626-3632Kronawitter, C.X., Vayssieres, L., Shen, S.H., Guo, L.J., Wheeler, D.A., Zhang, J.Z., Antoun, B.R., Mao, S.S., (2011) Energy Environ. Sci., 4, pp. 3889-3899Vayssieres, L., Sathe, C., Butorin, S.M., Shuh, D.K., Nordgren, J., Guo, J.H., (2005) Adv. Mater., 17, pp. 2320-2323Jia, C.-J., Sun, L.-D., Luo, F., Han, X.-D., Heyderman, L.J., Yan, Z.-G., Yan, C.-H., Raabe, J.R., (2008) J. Am. Chem. Soc., 130, pp. 16968-16977De La Peña, F., Barrett, N., Zagonel, L.F., Walls, M., Renault, O., (2010) Surf. Sci., 604, pp. 1628-1636De La Peña, F., Berger, M.H., Hochepied, J.F., Dynys, F., Stephan, O., Walls, M., (2011) Ultramicroscopy, 111, pp. 169-176Chen, S.-Y., Gloter, A., Zobelli, A., Wang, L., Chen, C.-H., Colliex, C., (2009) Phys. Rev. B: Condens. Matter Mater. Phys., 79, p. 104103Gonçalves, R.V., Migowski, P., Wender, H., Eberhardt, D., Weibel, D.E., Sonaglio V. F, C., Zapata, M.J.M., Teixeira, S.R., (2012) J. Phys. Chem. C, 116, pp. 14022-14030Zhao, Y., Feltes, T.E., Regalbuto, J.R., Meyer, R.J., Klie, R.F., (2010) J. Appl. Phys., 108, pp. 063704-063707Zhang, Z., (2007) Ultramicroscopy, 107, pp. 598-603Liu, B., Nakata, K., Liu, S., Sakai, M., Ochiai, T., Murakami, T., Takagi, K., Fujishima, A., (2012) J. Phys. Chem. C, 116, pp. 7471-7479An, W.-J., Wang, W.-N., Ramalingam, B., Mukherjee, S., Daubayev, B., Gangopadhyay, S., Biswas, P., (2012) Langmuir, 28, pp. 7528-7534Jang, J.S., Choi, S.H., Kim, D.H., Jang, J.W., Lee, K.S., Lee, J.S., (2009) J. Phys. Chem. C, 113, pp. 8990-8996Li, Z., Wang, Y., Liu, J., Chen, G., Li, Y., Zhou, C., (2009) Int. J. Hydrogen Energy, 34, pp. 147-152Shimizu, K.-I., Tsuji, Y., Hatamachi, T., Toda, K., Kodama, T., Sato, M., Kitayama, Y., (2004) Phys. Chem. Chem. Phys., 6, pp. 1064-106