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A ´ngel L. A ´ lvarez,Santiago Melo´n,Kevin P. Dalton,Ine´s Nicieza,Annele Roque,Bele´n Sua´rez,Francisco Parra 한국식품영양과학회 2012 Journal of medicinal food Vol.15 No.6
The anti–herpes simplex virus type 1 and anti–herpes simplex virus type 2 effects of apple pomace, a byproduct from the cider-processing industry, were investigated. The mechanisms of antiviral action were assessed using a battery of experiments targeting sequential steps in the viral replication cycle. The anti-herpetic mechanisms of apple pomaces included the inhibition of virus attachment to the cell surface and the arrest of virus entry and uncoating. Quercitrin and procyanidin B2 were found to play a crucial role in the antiviral activity.
Idalia Osuna-Ruiz,Marı´a Fernanda Espinoza-Marroquin,Jesu´ s Aaro´n Salazar-Leyva,Emyr Pen˜a,Carlos Alfonso A ´ lvarez-Gonza´lez,Isaura Ban˜uelos-Vargas,Emmanuel Martı´nez-Montan˜o 한국식품과학회 2019 Food Science and Biotechnology Vol.28 No.6
Pepsin from stomach of Bagre panamensis wassemi-purified and biochemically characterized. The acidproteolytic activity and purification fold were 3875 U/mgprotein and 91.85, respectively, after purification process. The optimum pH and temperature for semi-purified proteasewere 2–3 and 65 C, respectively. The enzymeactivity was stable after heating proteases at 50 C for120 min, but only 30% residual activity was detected afterheating at 65 C for 30 min. SDS-PAGE analysis showedtwo proteins bands after dialysis (26.1 and 38.6 kDa). Onlythe band of 38.6 kDa had proteolytic activity, which wasinhibited using pepstatin A. Organic solvents, surfactantsand reducing agents affect the proteolytic activity at differentextent; however, metal ions or EDTA have noimpact on protease activity. The semi-purified proteaseexhibited milk coagulant activity, with a maximum activityat 45 C. The obtained results highlight the potentialbiotechnological use of B. panamensis pepsin.
Aaltonen, T.,Á,lvarez Gonzá,lez, B.,Amerio, S.,Amidei, D.,Anastassov, A.,Annovi, A.,Antos, J.,Apollinari, G.,Appel, J. A.,Apresyan, A.,Arisawa, T.,Artikov, A.,Asaadi, J.,Ashmanskas, W.,Aue American Physical Society 2010 Physical Review Letters Vol.105 No.25
<P>A precision measurement of the top quark mass m_{t} is obtained using a sample of tt[over ¯] events from pp[over ¯] collisions at the Fermilab Tevatron with the CDF II detector. Selected events require an electron or muon, large missing transverse energy, and exactly four high-energy jets, at least one of which is tagged as coming from a b quark. A likelihood is calculated using a matrix element method with quasi-Monte Carlo integration taking into account finite detector resolution and jet mass effects. The event likelihood is a function of m_{t} and a parameter ?_{JES} used to calibrate the jet energy scale in situ. Using a total of 1087 events in 5.6??fb^{-1} of integrated luminosity, a value of m_{t}=173.0±1.2??GeV/c^{2} is measured.</P>
Casas Sara Gortázar de las,Spagnolo Emanuela,Saverio Salomone Di,Álvarez-Gallego Mario,Carrasco Ana López,López María Carbonell,Cobos Sergio Torres,Campo Constantino Fondevila,Gutiérrez Alicia Hernánd 대한대장항문학회 2023 Annals of Coloproctolgy Vol.39 No.3
Purpose: The surgical management of deep infiltrative endometriosis (DE) involving the rectum remains a challenge. The objective of this study was to assess the outcomes from a single tertiary center over a decade with an emphasis on the role of a protective loop ileostomy (PI).Methods: A retrospective review of outcomes for 168 patients managed between 2008 and 2018 is presented including 57 rectal shaves, 23 discoid excisions, and 88 segmental rectal resections.Results: The nodule size (mean±standard deviation) in the segmental resection group was 32.7±11.2 mm, 23.4±10.5 mm for discoid excision, and 18.8±6.0 mm for rectal shaves. A PI was performed in 19 elective cases (11.3%) usually for an ultra-low anastomosis <5 cm from the anal verge. All Clavien-Dindo grade III/IV complications occurred after segmental resections and included 5 anastomotic leaks, 6 rectovaginal fistulas, 2 ureteric fistulas, and 1 ureteric stenosis. Of 26 stomas (15.5%), there were 19 PIs, 3 secondary ileostomies (after complications), and 4 end colostomies. The median time to PI closure was 5.8 months (range, 0.4–16.7 months) in uncomplicated disease compared with 9.2 months (range, 4.7–18.4 months) when initial postoperative complications were recorded (P=0.019). Only 1 patient with a recurrent rectovaginal fistula had a permanent colostomy.Conclusion: In patients with DE and rectal involvement a PI is selectively used for low anastomoses and complex pelvic reconstructions. Protective stomas and those used in the definitive management of a major postoperative complication can usually be reversed.
Measurement of the top quark mass in the all-hadronic mode at CDF
Aaltonen, T.,Á,lvarez Gonzá,lez, B.,Amerio, S.,Amidei, D.,Anastassov, A.,Annovi, A.,Antos, J.,Apollinari, G.,Appel, J.A.,Arisawa, T.,Artikov, A.,Asaadi, J.,Ashmanskas, W.,Auerbach, B.,Auri Elsevier 2012 Physics letters: B Vol.714 No.1
<P><B>Abstract</B></P><P>A measurement of the top quark mass (<SUB>Mtop</SUB>) in the all-hadronic decay channel is presented. It uses 5.8 fb<SUP>−1</SUP> of pp¯ data collected with the CDF II detector at the Fermilab Tevatron Collider. Events with six to eight jets are selected by a neural network algorithm and by the requirement that at least one of the jets is tagged as a <I>b</I>-quark jet. The measurement is performed with a likelihood fit technique, which simultaneously determines <SUB>Mtop</SUB> and the jet energy scale (JES) calibration. The fit yields a value of <SUB>Mtop</SUB>=172.5±1.4(stat)±1.0(JES)±1.1(syst) GeV/<SUP>c2</SUP>.</P>
María del Carmen Oliver-Salvador,Elisa Morales-López,Enrique Durán-Páramo,Carlos Orozco-Álvarez,Sergio García-Salas 한국생물공학회 2013 Biotechnology and Bioprocess Engineering Vol.18 No.4
Cysteine proteases from Jacaratia mexicana,an endemic Mexican plant, could compete in industrial applications with papain. Currently the only way to obtain these proteases is by extracting them from the wild plant. An alternative source of these enzymes is by J. mexicana suspension culture. In this work, this culture was carried out in airlift, bubble column and stirred tank bioreactors,and the effects of shear rate and microturbulence on cell growth, protein accumulation and proteolytic activity were determined. The shear rates in the stirred tank, bubble column and airlift bioreactors were 274 1/s, 13 1/s and 36 1/s respectively, and microturbulences (symbolized by λ, in units of μm) were 46, 79, and 77 μm, respectively. Protein levels and proteolytic activity were linearly correlated with both shear rate and microturbulence. A higher shear rate and a more intensive microturbulence occurred in the stirred tank, producing higher protein accumulation and higher proteolytic activity compared with those of the other two bioreactor systems. Higher shear rate and microturbulence had an elicitor effect on protease synthesis, because microturbulence in stirred tank bioreactors was lower than the average length of J. mexicana cells. Furthermore, cells in the stirred tank were smaller and thinner than those grown in shake flask, bubble column and airlift bioreactors. In summary, proteases were produced by J. mexicana cell cultures in a stirred tank under conditions of high shear rate and intensive microturbulence, which are similar to those which occur in industrial stirred tanks. These results encourage continuation of the process development for large scale production of these proteases by this technology.
A Novel Approach to Trojan Horse Detection in Mobile Phones Messaging and Bluetooth Services
( Juan A. Ortega ),( Daniel Fuentes ),( Juan A. Lvarez ),( Luis Gonzalez-abril ),( Francisco Velasco ) 한국인터넷정보학회 2011 KSII Transactions on Internet and Information Syst Vol.5 No.8
A method to detect Trojan horses in messaging and Bluetooth in mobile phones by means of monitoring the events produced by the infections is presented in this paper. The structure of the detection approach is split into two modules: the first is the Monitoring module which controls connection requests and sent/received files, and the second is the Graphical User module which shows messages and, under suspicious situations, reports the user about a possible malware. Prototypes have been implemented on different mobile operating systems to test its feasibility on real cellphone malware. Experimental results are shown to be promising since this approach effectively detects various known malware.
Dynamic punching shear tests of flat slab-column joints with 5D steel fibers
Yezid A. Alvarado,Benjamín Torres,Manuel Buitrago,Daniel M. Ruiz,Sergio Y. Torres,Ramón A. Álvarez 국제구조공학회 2022 Structural Engineering and Mechanics, An Int'l Jou Vol.81 No.3
This study aimed to analyze the dynamic punching shear performance of slab-column joints under cyclic loads with the use of double-hooked end (5D) steel fibers. Structural systems such as slab-column joints are widely found in infrastructures. The susceptibility to collapse of such structures when submitted to seismic loads is highly dependent on the structural performance of the slab-column connections. For this reason, the punching capacity of reinforced concrete (RC) structures has been the subject of a great number of studies. Steel fibers are used to achieve a certain degree of ductility under seismic loads. In this context, 5D steel hooked fibers provide high levels of fiber anchoring, tensile strength and ductility. However, only limited research has been carried out on the performance under cyclic loads of concrete structural members containing steel fibers. This study covers this gap with experimental testing of five different full-scale subassemblies of RC slab-column joints: one without punching reinforcement, one with conventional punching reinforcement and three with 5D steel fibers. The subassemblies were tested under cyclic loading, which consisted of applying increasing lateral displacement cycles, such as in seismic situations, with a constant axial load on the column. This set of cycles was repeated for increasing axial loads on the column until failure. The results showed that 5D steel fiber subassemblies: i) had a greater capacity to dissipate energy, ii) improved punching shear strength and stiffness degradation under cyclic loads; and iii) increased cyclic loading capacity.
Search for Long-Lived Massive Charged Particles in 1.96 TeVpp¯Collisions
Aaltonen, T.,Adelman, J.,Akimoto, T.,Á,lvarez Gonzá,lez, B.,Amerio, S.,Amidei, D.,Anastassov, A.,Annovi, A.,Antos, J.,Apollinari, G.,Apresyan, A.,Arisawa, T.,Artikov, A.,Ashmanskas, W.,Att American Physical Society 2009 Physical Review Letters Vol.103 No.2
<P>We performed a signature-based search for long-lived charged massive particles produced in 1.0 fb-1 of pp[over ] collisions at sqrt[s]=1.96 TeV, collected with the CDF II detector using a high transverse-momentum (pT) muon trigger. The search used time of flight to isolate slowly moving, high-pT particles. One event passed our selection cuts with an expected background of 1.9+/-0.2 events. We set an upper bound on the production cross section and, interpreting this result within the context of a stable scalar top-quark model, set a lower limit on the particle mass of 249 GeV/c2 at 95% C.L.</P>