554 research outputs found
211 GLUCOSE UPTAKE AND GLUCOSE TRANSPORTER-1 EXPRESSION IN HUMAN CHONDROCYTES ARE DIFFERENTIALLY REGULATED BY HIGH AND LOW GLUCOSE CONCENTRATIONS
Supergravity Inflation on the Brane
We study N=1 Supergravity inflation in the context of the braneworld
scenario. Particular attention is paid to the problem of the onset of inflation
at sub-Planckian field values and the ensued inflationary observables. We find
that the so-called -problem encountered in supergravity inspired
inflationary models can be solved in the context of the braneworld scenario,
for some range of the parameters involved. Furthermore, we obtain an upper
bound on the scale of the fifth dimension, M_5 \lsim 10^{-3} M_P, in case the
inflationary potential is quadratic in the inflaton field, . If the
inflationary potential is cubic in , consistency with observational data
requires that .Comment: 6 pages, 1 figure, to appear in Phys. Rev.
Study of reactions induced by 6He on 9Be
INPC 2013 – International Nuclear Physics ConferenceWe present the results of experiments using a 6He beam on a 9Be target at energies 7 − 9 times the Coulomb barrier. Angular distributions of the elastic, inelastic scattering (target breakup) and the a-particle production in the 6He+9Be collision have been analysed. Total reaction cross sections were obtained from the elastic scatteringanalyses and a considerable enhancement has been observed by comparing to stable system
Mixedness and entanglement for two-mode Gaussian states
We analytically exploit the two-mode Gaussian states nonunitary dynamics. We
show that in the zero temperature limit, entanglement sudden death (ESD) will
always occur for symmetric states (where initial single mode compression is
) provided the two mode squeezing satisfies We also give the analytical expressions for the time of ESD.
Finally, we show the relation between the single modes initial impurities and
the initial entanglement, where we exhibit that the later is suppressed by the
former.Comment: Accepted for publication in Optics Communication
Acute anti-ischemic effect of estradiol 17β in menopausal women with coronary artery disease
New bounds for Tsallis parameter in a noncommutative phase-space entropic gravity and nonextensive Friedmann equations
In this paper, we have analyzed the nonextensive Tsallis statistical
mechanics in the light of Verlinde's formalism. We have obtained, with the aid
of a noncommutative phase-space entropic gravity, a new bound for Tsallis
nonextensive (NE) parameter (TNP) that is clearly different from the ones
present in the current literature. We derived the Friedmann equations in a NE
scenario. We also obtained here a relation between the gravitational constant
and the TNP.Comment: 15 pages. Final version to appear in Physica
Phase transition and selection in a four-species cyclic Lotka-Volterra model
We study a four species ecological system with cyclic dominance whose
individuals are distributed on a square lattice. Randomly chosen individuals
migrate to one of the neighboring sites if it is empty or invade this site if
occupied by their prey. The cyclic dominance maintains the coexistence of all
the four species if the concentration of vacant sites is lower than a threshold
value. Above the treshold, a symmetry breaking ordering occurs via growing
domains containing only two neutral species inside. These two neutral species
can protect each other from the external invaders (predators) and extend their
common territory. According to our Monte Carlo simulations the observed phase
transition is equivalent to those found in spreading models with two equivalent
absorbing states although the present model has continuous sets of absorbing
states with different portions of the two neutral species. The selection
mechanism yielding symmetric phases is related to the domain growth process
whith wide boundaries where the four species coexist.Comment: 4 pages, 5 figure
Isolation and preliminary characterization of a caprine rotavirus
Five cytopathic rotavirus strains were isolated in MA 104 cells from stool specimens of kids with diarrhoea.
Pre-treatment of the virus with trypsin and incorporation of low levels of trypsin in the maintenance
medium were important for the successful cultivation of the strains in these cells. The isolates
were shown to be group A rotaviruses by antigenic reactivity with a group A monoclonal antibody.
This was confirmed by the migration patterns of the viral RNA genome during polyacrylamide gel
electrophoresis, which also confirmed that all five strains had an identical RNA electropherotype.
Analysis with monoclonal antibodies to the subgroup-specific VP6 antigen showed that these strains
carried the subgroup I epitope.The articles have been scanned in colour with a HP Scanjet 5590; 600dpi.
Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format.mn201
Acute Intestinal Obstruction Due To Gallstone Ileus [abdome Agudo Por Obstrução Por Ileobiliar]
Objective: Small bowel obstruction (SBO) due to gallstones (gallstone ileus) is an uncommon complication of cholelithiasis, for which there is no defined surgical procedure. The objective of this study was to perform a systematic review of the history, available image exams and clinical approach to the diagnosis and treatment of gallstone ileus. Method: We conducted a retrospective study in a university hospital including all cases of SBO treated over a period of 23 years. According to the surgical treatment, the patients were divided into two groups: (1) enterolithotomy with posterior cholecystectomy (two-stage surgery); and (2) enterolithotomy, cholecystectomy and fistula closure (one-stage surgery). Results: Twelve patients were included in the study, including 11 females (91,6%), with a mean age of 72.2 years. All patients presented associated diseases, mainly arterial hypertension (75%). All except one patient had multiple SBO symptoms. Gallstone ileus diagnosis was made before laparotomy in six patients (50%). There were eight patients in group 1 and four in group 2, and the morbidity was, respectively, 33.3% and 8.3%. Overall mortality was 16.6% (one patient in each group). Conclusion: Gallstone ileus should be suspected in the elderly with SBO symptoms. Early diagnosis can reduce post-operative complications. Treatment is urgent laparotomy and the surgical approach must be individualized for each case. The majority of patients in this study were treated with enterolithotomy, with cholecystectomy being performed later in two symptomatic patients.404275280Martin, F., Intestinal obstruction due to gall-stones: With report of three successful cases (1912) Ann Surg., 55 (5), pp. 725-743Reisner, R.M., Cohen, J.R., Gallstone ileus: A review of 1001 reported cases (1994) Am Surg., 60 (6), pp. 441-446Lobo, D.N., Jobling, J.C., Balfour, T.W., Gallstone ileus: Diagnostic pittfalls and therapeutic successes (2000) J Clin Gastroenterol., 30 (1), pp. 72-76Hayes, N., Saha, S., Recurrent gallstone Ileus (2012) Clin Med Res., 10 (4), pp. 236-239Carrascosa, M.F., Riego-Martín, M.D., Salcines Caviedes, J.R., González Gutiérrez, P., Gallstone ileus (2012) BMJ Case Rep., , Feb 21;2012Rojas-Rojas, D.J., Martínez-Ordaz, J.L., Romero-Hernández, T., Biliary ileus: 10-years experience (2012) Cir Cir., 80 (3), pp. 228-232Tucker, A., Garstin, I., A peculiar cause of bowel obstruction (2013) Int J Surg Case Rep., 4 (5), pp. 473-476Halabi, W.J., Kang, C.Y., Ketana, N.K., Lafaro, K.J., Nguyen, V.K., Stamos, M.J., Surgery for gallstone ileus: A nationwide comparison of trends and outcomes (2013) Ann Surg., , jan 4 [Epub ahead of print]Pronio, A., Piroli, S., Caporilli, D., Ciamberlano, B., Coluzzi, M., Castellucci, G., Recurrent gallstone ileus: Case report and literature review (2013) G Chir., 34 (1-2), pp. 35-37McHado, M.A.C., Jukemura, J., Volpe, P., Abdo, E.E., Penteado, S., Bacchella, T., Fístulas biliares internas: Estudo de 13 casos e revisão da literatura (1995) Hos Clin Fac Med S Paulo., 50 (1), pp. 45-48Ayantunde, A.A., Agrawal, A., Gallstone Ileus: Diagnosis and management (2007) World J Surg., 31 (6), pp. 1292-1297Ravikumar, R., Williams, J.G., The operative management of gallstone ileus (2010) Ann R Coll Surg Engl., 92 (4), pp. 279-281Day, E.A., Marks, C., Gallstone ileus: Review of literature and presentation of thirty-four new cases (1975) Am J Surg., 129 (5), pp. 552-558Deitz, D.M., Standage, B.A., Pinson, C.W., McConnell, D.B., Krippaehne, W.W., Improving the outcome in gallstone ileus (1986) Am J Surg., 151 (5), pp. 572-576Bouveret, L., Stenose du pylore, adherent a la vesicule calculeuse (1896) Rev Med., 16, pp. 1-16Gajendran, M., Muniraj, T., Gelrud, A., A challenging case of gastric outlet obstruction (Bouveret's syndrome): A case report (2011) J Med Case Rep., 5, p. 497Costil, V., Jullès, M.C., Zins, M., Loriau, J., Bouveretś syndrome. An unusual localization of gallstone ileus (2012) J Visc Surg., 149 (4), pp. e284-e286Kasahara, Y., Umemura, H., Shiraha, S., Kuyama, T., Sakata, K., Kubota, H., Gallstone ileus. Review of 112 patients in the Japanese literature (1980) Am J Surg., 140 (3), pp. 437-440van Hillo, M., van der Vliet, J.A., Wiggers, T., Obertop, H., Terpstra, O.T., Greep, J.M., Gallstone obstruction of the intestine: An analysis of ten patients and a review of the literature (1987) Surgery., 101 (3), pp. 273-276Nuño-Guzmán, C.M., Arróniz-Jáuregui, J., Moreno-Pérez, P.A., Chávez-Solís, E.A., Esparza-Arias, N., Hernández-González, C.I., Gallstone ileus: One-stage surgery in a patient with intermittent obstruction (2010) World J Gastrointest Surg., 2 (5), pp. 172-176Clavien, P.A., Richon, J., Burgan, S., Rohner, A., Gallstone ileus (1990) Br J Surg., 77 (7), pp. 737-742Murphy, K.P., Kearney, D.E., Mc Laughlin, P.D., Maher, M.M., Complete radiological findings in gallstone ileus (2012) J Neurogastroenterol Motil., 18 (4), pp. 448-449Huang, S.T., Huang, M.Y., Gallstone ileus: A diagnostic challenge by plain radiography (2013) Emerg Med J., 30 (5), p. 370Lasson, A., Lorén, I., Nilsson, A., Nirhov, N., Nilsson, P., Ultrasonography in gallstone ileus: A diagnostic challenge (1995) Eur J Surg., 161 (4), pp. 259-263Mishin, I., Ghidirim, G., Zastavnitsky, G., Non-operative treatment for gall-stone ileus-a case report (2011) Pol Przegl Chir., 83 (4), pp. 223-226Conzo, G., Mauriello, C., Gambardella, C., Napolitano, S., Cavallo, F., Tartaglia, E., Gallstone ileus: One-stage surgery in an elderly patient: One-stage surgery in gallstone ileus (2013) Int J Surg Case Rep., 4 (3), pp. 316-318Mallipeddi, M.K., Pappas, T.N., Shapiro, M.L., Scarborough, J.E., Gallstone ileus: Revisiting surgical outcomes using National Surgical Quality Improvement Program data (2013) J Surg Res., , May 31. [Epub ahead of print]Beriner, S.D., Burson, L.C., One-stage repair for cholecyst-duodenal fistula and gallstone ileus (1965) Arch Surg., 90, pp. 313-316Jones, R., Broman, D., Hawkins, R., Corless, D., Twice recurrent gallstone ileus: A case report (2012) J Med Case Rep., 6 (1), p. 362Paiva-Coronel, G., Martínez-Ramos, D., Cosa-Rodríguez, R., Salvador-Sanchis, J.L., Íleo biliar. Abordaje asistido por laparoscopia (2010) Cir Esp., 87 (4), pp. 255-25
Aspects Related to Venous Ulcer Healing and its Influence on Quality of Life
Nowadays, the varicose ulcers (VUs) are one of the most worrying leg ulcers and are an important global health problem, with high costs related to the treatment and its complications. Moreover, the quality of life (QOL) of the patient could be affected by pain, sleep disorders, functional impairment, depression, and isolation. The VU patient care is complex, and it is necessary to know the aspects that contribute to the healing process for developing effective strategies. The members of the multidisciplinary health team should identify sociodemographic, clinical, and care aspects that interfere in tissue repair and therefore impacting the QOL. Self-efficacy, adherence to treatment, and self-esteem are other important aspects also related to healing and QOL, with implications for health care and the multidisciplinary team. To sum up, the use of multidisciplinary protocols allows the systematization of care for people with VUs in order to standardize therapeutic interventions with the aim to decrease the healing process time and, as a consequence, to improve the QOL
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