25,736 research outputs found
Measurement of the ratio of prompt χ c to J / ψ production in pp collisions at √s = 7 TeV
No full textThe prompt production of charmonium χ c and J / ψ states is studied in proton-proton collisions at a centre-of-mass energy of √s = 7 TeV at the Large Hadron Collider. The χ c and J / ψ mesons are identified through their decays χ c → J / ψ γ and J / ψ → μ + μ - using 36 pb - 1 of data collected by the LHCb detector in 2010. The ratio of the prompt production cross-sections for χ c and J / ψ, σ (χ c → J / ψ γ) / σ (J / ψ), is determined as a function of the J / ψ transverse momentum in the range 2 < p T J / ψ < 15 GeV / c. The results are in excellent agreement with next-to-leading order non-relativistic expectations and show a significant discrepancy compared with the colour singlet model prediction at leading order, especially in the low p T J / ψ region
Radiological and forensic medicine aspects of traumatic injuries in child abuse
No full textChild abuse is a topical issue in modern society and has social and medical implications which directly concern the doctor, both as a private citizen and as a health professional. Abuse injuries can be of very different types, e.g. physical, psychological or sexual. Hence they require a multidisciplinary and multispecialty approach, which must begin with an accurate medical examination, conducted in compliance with the lege artis principles and with respect for the victim's dignity. Diagnostic imaging becomes essential, together with epicrisis, which is useful to distinguish between accidental and abusive injuries. This paper describes the radiologist's key role in identifying physical injuries due to child abuse, in accordance with current regulations. © Springer-Verlag 2009
Restauro delle strutture murarie del mausoleo alfa lungo la via Clodia nell’area extraterritoriale di Santa Maria di Galeria, Città del Vaticano
No full textProgetto definitivo ed esecutivo. Committente: Musei Vaticani, Città del Vaticano; Responsabili scientifici: dott. G. Filippi (Musei Vaticani), E. Pallottino (Dipartimento di Architettura); responsabili della progettazione e coordinatori dell'esecuzione: L. De Blasi (archeologo; Musei Vaticani), G. Devreux (responsabile del Laboratorio Restauro Marmi e Calchi dei Musei Vaticani), P. Porretta (architetto, Roma Tre), E. Rinaldi (archeologo, Roma Tre), U. Santamaria (responsabile del Laboratorio di Diagnostica per la Conservazione ed il Restauro); gruppo di progettazione: G. Ajo’, S. Calvigioni, C. Maestri, M. Magazzù, M. Fadd
Hepatitis C in haemophilia : lights and shadows
No full textHepatitis C is a major cause of morbidity and mortality in haemophiliacs who received clotting factor concentrates before the availability of virus-inactivated factors in the mid-1980s. Early studies gave conflicting indications as to the severity of hepatitis C (originally termed non-A non-B hepatitis), as mild, slowly progressive hepatitis was documented in several infants and young adults with haemophilia who were examined with repeat liver biopsies, whereas more progressive hepatitis and cirrhosis was documented in others. One major point of dispute was whether these discrepancies could in part be accounted for by epidemiological differences among studies, as hepatitis C acquired early in life may initially run a benign course and later worsen owing to spontaneous recrudescence of hepatitis or interference with such comorbidity factors as alcohol abuse or infection with the human immunodeficiency virus (HIV). In the mid 1990s, the latter infection overshadowed hepatitis C as a cause of death in this patient population. Because hepatocellular carcinoma is emerging as an important complication in haemophiliacs with long-standing hepatitis C virus (HCV) infection who survived HFV infection, and because of recent advances in treating HIV, morbidity and mortality associated with chronic hepatitis C have regained emphasis amongst haemophiliacs. The development of newer interferon-based therapies provides an opportunity for modifying the natural history of HCV infection in a substantial number of haemophilic patients
Illuminaçao Apologetica do retrato de Morteçor en que aparecem com mais vivas côres os erros do author do novo Methodo, e seu Apologista ...
No full textFecha sacada de la pág.2 y 159Sign.: A-V\p4\sError tipográfico de signatura : a B\b2\s llama B\b3\
Método validado para a determinação de ácido salicílico em folhas de arroz por Cromatografia Líquida de Alta Eficiência (CLAE).
No full textO objetivo deste trabalho foi validar analiticamente uma metodologia específica para a quantificação de ácido salicílico em folhas de arroz. Ela será utilizada em trabalhos subsequentes que visam a avaliação da relação entre o teor da molécula e o desenvolvimento da brusone e outras doenças em plantas de arroz. Foi utilizada a técnica de Cromatografia Líquida de Alta Eficiência (CLAE), que por meio do seu processo de validação apresentou-se: seletiva, precisa, linear, exata e robusta, com Limite de Detecção (LD) = 0,43 ng mL-1 e Limite de Quantificação (LQ) = 1,45 ng mL-1. A metodologia também foi avaliada como vantajosa devido à sua menor complexidade operacional e ao seu baixo custo relativo em relação aos métodos previamente reportados na literatura
Inibição do desenvolvimento micelial de Magnaporthe oryzae por metabólito extracelular produzido por Sarocladium oryzae.
No full textA brusone (Magnaporthe oryzae) é a principal doença da cultura do arroz. Algumas estratégias para o biocontrole vêm sendo estudadas como integrantes do manejo integrado da doença. Com o objetivo de caracterizar parcialmente o filtrado da cultura de Sarocladium oryzae responsável por antagonismo a M. oryzae, o isolado CNPAF So 20G de S. oryzae foi inoculado em meio de cultura líquido e incubado à 30 C. Após filtração do meio, sua fração apolar foi extraída e concentrada. Os cristais obtidos foram solubilizados em etanol. A solução foi diluída e adicionada em diferentes proporções em placas de Petri contendo meio BDA, gerando cinco tratamentos: 0,08, 0,15, 0,35, 0,75, 1,0 (μL de solução/mL de meio) que foram inoculados com discos de M. oryzae de cinco mm de diâmetro e incubadas a 25 oC por 10 dias. Foram feitas as medições dos diâmetros das colônias e as médias comparadas pelo teste de Tukey a 5%. Foi observada relação linear inversa entre a proporção de metabólito extracelular apolar produzido por S. oryzae e o crescimento micelial de M. oryzae. Os dados mostraram que a utilização de S. oryzae no controle biológico da brusone pode ser uma estratégia promissora
Resistência a fungicidas de isolados de Magnaporthe oryzae associados ao arroz.
No full textOs tratamentos com fungicidas são um componente-chave na gestão integrada da brusone (Magnaporthe oryzae). O objetivo deste trabalho foi selecionar isolados de M. oryzae resistentes aos fungicidas azoxistrobina, triciclazol e trifloxistrobina+tebuconazole
Obtenção de açúcares a partir de cascas de arroz visando à produção de etanol de segunda geração.
No full textO objetivo do trabalho foi a obtenção de açúcares menos complexos, fermentáveis, a partir de cascas de arroz, visando sua aplicação futura na produção de etanol de segunda geração
Early detection of left ventricular dysfunction in diabetes mellitus patients with normal ejection fraction, stratified by BMI: A preliminary speckle tracking echocardiography study
No full textBackground: Diabetes mellitus (DM) represents by itself a major risk factor for cardiovascular events and the coexistence of obesity with consequent left ventricular volumetric overload could be responsible for further damages on left ventricular function. Aim of this study was to demonstrate the effect of body mass index (BMI) on left ventricular function in diabetes patients with no cardiovascular complications and with normal ejection fraction (EF). Materials and Methods: We evaluated 71 stable asymptomatic diabetes patients in optimal medical treatment and 24 healthy controls (C) (45% females; mean age: 58.4 +/-9.4 years; BMI: 23.5 +/-1.5). We stratified diabetes patients into two groups according to BMI: BMI 30 kg/m 2 (B: 27 patients; 37% females; mean age: 56.2 +/-7.8 years; BMI: 33.0 +/-2.1; Diabetes duration: 8.5 +/-5.2 years). The following parameters were evaluated by conventional two dimensional (2D) echocardiography (GE VIVID 7) and tissue Doppler imaging (TDI): left ventricular dimensions (LVIDd; PWTd; IVSd), Left Ventricular Volumes (EDV, ESV), EF (by biplane Simpson′s method), Left Ventricular Mass (by ASE formula), peak mitral annular velocity at septal and lateral levels (Sm and Sl). Global longitudinal strain (GLS) was obtained off line by Speckle tracking imaging method using Echopac 10 software. Results: Groups A, B were comparable for diabetes duration and glycated hemoglobin level, history of hypertension, and lipid profile. The EF was similar in the three groups, (A: 64 +/-6%; B: 63 +/-4%; C: 61 +/-5%; P= NS). LVMass 2.7 indexed for height was significantly higher in A and B in comparison with C (A: 45.2 +/-8.1 g/m 2.7 ; B: 46.1 +/-9.6 g/m 2.7 ; C: 39.5 +/-4.9 g/m 2.7 ; P < 0.05). The stroke volume index (SVi) was significantly lower in B vs A (B: 35.3 +/-5.7 ml/m 2 ; A: 39.3 +/7.1 ml/m 2 ; P = 0.033). GLS was significantly lower in group B respect A and C (C: 20.9 +/-1.3%; A:-20.3+/-2.6%; B:-19 +/-2; P < 0.05; P < 0.01). Conclusions: In uncomplicated asymptomatic DM patients, the presence of first degree obesity plays an incremental role in adversely affecting left ventricular function and remodeling. The conventional echocardiographic methods such as the EF and the TDI are not so sensitive to identify the early LV dysfunction such as the evaluation of GLS by Speckle Tracking echocardiography. The longitudinal subendocardial fibers dysfunction in diabetes/obese patients could be derived by the complex interaction between metabolic (diabetes) and hemodynamic/endocrine abnormalities
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