919 research outputs found
Tyrosine kinase inhibitors improve long-term outcome of allogeneic hematopoietic stem cell transplantation for adult patients with philadelphia chromosome positive acute lymphoblastic leukemia
This study aimed to determine the impact of tyrosine kinase inhibitors given pre- and post-allogeneic stem cell transplantation on long-term outcome of patients allografted for Philadelphia chromosome-positive acute lymphoblastic leukemia. This retrospective analysis from the EBMT Acute Leukemia Working Party included 473 de novoPhiladelphia chromosome-positive acute lymphoblastic leukemia patients in first complete remission who underwent an allogeneic stem cell transplantation using a human leukocyte antigen-identical sibling or human leukocyte antigen-matched unrelated donor between 2000 and 2010. Three hundred and ninety patients received tyrosine kinase inhibitors before transplant, 329 at induction and 274 at consolidation. Kaplan-Meier estimates of leukemia-free survival, overall survival, cumulative incidences of relapse incidence, and non-relapse mortality at five years were 38%, 46%, 36% and 26%, respectively. In multivariate analysis, tyrosine-kinase inhibitors given before allogeneic stem cell transplantation was associated with a better overall survival (HR=0.68; P=0.04) and was associated with lower relapse incidence (HR=0.5;P=0.01). In the post-transplant period, multivariate analysis identified prophylactic tyrosine-kinase inhibitor administration to be a significant factor for improved leukemia-free survival (HR=0.44; P=0.002) and overall survival (HR=0.42; P=0.004), and a lower relapse incidence (HR=0.40; P=0.01). Over the past decade, administration of tyrosine kinase inhibitors before allogeneic stem cell transplantation has significantly improved the long-term allogeneic stem cell trans
Toxic effects of four biopesticides (Mycotal, Vertalec, Vertemic and Neem Azal-T/S) on Bemisia tabaci (Gennadius) and Aphis gossypii (Glover) on cucumber and tomato plants in greenhouses in Egypt
Laboratory bioassays and field trials were performed to evaluate and compare the efficacy of 4 biopesticides, Mycotal, Vertalec, Vertemic and NeemAzal-T/S, against Bemisia tabaci (immature stages and adults) and Aphis gossypii on cucumber and tomato plants in greenhouses in Egypt. All these biopesticides reduced significantly whitefly and aphid populations. In laboratory bioassays Vertemic caused the highest toxic effect against whitefly and aphid, while in field experiments good results were obtained with all the compounds especially at high concentrations. The higher the concentration of these products the more severe was the effect. The data of this study suggest that these biopesticides are really useful alternative products to be used in IPM of tomato and cucumber crops. Key words: whitefly, aphid, Verticillium lecanii, Abamectin, Azadirachtin. TOSSICITÀ DI QUATTRO BIOINSETTICIDI (MYCOTAL, VERTALEC, VERTEMIC E NEEM AZAL-T/S) SU BEMISIA TABACI (GENNADIUS) E APHIS GOSSYPII (GLOVER) IN COLTURE PROTETTE DI ZUCCHINO E POMODORO IN EGITTO Effetti tossici di 4 biopesticidi, Mycotal, Vertalec, Vertemic e Neem Azal–T/S su Bemisia tabaci (Gennadius) e Aphis gossypii (Glover) in coltivazioni sotto serra di cetriolo e pomodoro in Egitto. In questo studio sono stati effettuati esperimenti di laboratorio e di campo per valutare l’efficacia di 4 bioinsetticidi, Mycotal, Vertalec, Vertemic e NeemAzal-T/S9, nei confronti di Bemisia tabaci (stadi giovanili e adulti) e Aphis gossypii su coltivazioni in serra di cetriolo e pomodoro in Egitto. Tutti i prodotti testati hanno avuto un effetto tossico su B. tabaci e Aphis gossypii riducendone le popolazioni in maniera significativa. Nei biosaggi di laboratorio il Vertimec ha evidenziato l’effetto tossico maggiore, mentre negli esperimenti di campo sono stati ottenuti buoni risultati (% di mortalità) da tutti i prodotti, soprattutto quando utilizzati alle dosi più elevate. Più alte le concentrazioni delle sospensioni bioinsetticide, maggiore l’effetto tossico ottenuto. Questi dati mostrano l’efficacia di questi prodotti e confermano il loro potenziale utilizzo nelle strategie di controllo integrato delle coltivazione di cetriolo e pomodoro in serra. Parole chiave: aleirodidi, afidi, Verticillium lecanii, Abamectina, Azadiractina
Search for direct production of charginos and neutralinos in events with three leptons and missing transverse momentum in √s = 7 TeV pp collisions with the ATLAS detector
A search for the direct production of charginos and neutralinos in final states with three electrons or muons and missing transverse momentum is presented. The analysis is based on 4.7 fb−1 of proton–proton collision data delivered by the Large Hadron Collider and recorded with the ATLAS detector. Observations are consistent with Standard Model expectations in three signal regions that are either depleted or enriched in Z-boson decays. Upper limits at 95% confidence level are set in R-parity conserving phenomenological minimal supersymmetric models and in simplified models, significantly extending previous results
Microwave Crystallization of Lithium Aluminum Germanium Phosphate Solid-State Electrolyte
Lithium aluminum germanium phosphate (LAGP) glass-ceramics are considered as promising solid-state electrolytes for Li-ion batteries. LAGP glass was prepared via the regular conventional melt-quenching method. Thermal, chemical analyses and X-ray diffraction (XRD) were performed to characterize the prepared glass. The crystallization of the prepared LAGP glass was done using conventional heating and high frequency microwave (MW) processing. Thirty GHz microwave (MW) processing setup were used to convert the prepared LAGP glass into glass-ceramics and compared with the conventionally crystallized LAGP glass-ceramics that were heat-treated in an electric conventional furnace. The ionic conductivities of the LAGP samples obtained from the two different routes were measured using impedance spectroscopy. These samples were also characterized using XRD and scanning electron microscopy (SEM). Microwave processing was successfully used to crystallize LAGP glass into glass-ceramic without the aid of susceptors. The MW treated sample showed higher total, grains and grain boundary ionic conductivities values, lower activation energy and relatively larger-grained microstructure with less porosity compared to the corresponding conventionally treated sample at the same optimized heat-treatment conditions. The enhanced total, grains and grain boundary ionic conductivities values along with the reduced activation energy that were observed in the MW treated sample was considered as an experimental evidence for the existence of the microwave effect in LAGP crystallization process. MW processing is a promising candidate technology for the production of solid-state electrolytes for Li-ion battery
Measurement of the correlation between flow harmonics of different order in lead-lead collisions at √sNN = 2.76 TeV with the ATLAS detector
Correlations between the elliptic or triangular flow coefficients vm (m=2 or 3) and other flow harmonics vn (n=2 to 5) are measured using √sNN=2.76 TeV Pb+Pb collision data collected in 2010 by the ATLAS experiment at the LHC, corresponding to an integrated luminosity of 7 μb−1. The vm−vn correlations are measured in midrapidity as a function of centrality, and, for events within the same centrality interval, as a function of event ellipticity or triangularity defined in a forward rapidity region. For events within the same centrality interval, v3 is found to be anticorrelated with v2 and this anticorrelation is consistent with similar anticorrelations between the corresponding eccentricities, ε2 and ε3. However, it is observed that v4 increases strongly with v2, and v5 increases strongly with both v2 and v3. The trend and strength of the vm−vn correlations for n=4 and 5 are found to disagree with εm−εn correlations predicted by initial-geometry models. Instead, these correlations are found to be consistent with the combined effects of a linear contribution to vn and a nonlinear term that is a function of v22 or of v2v3, as predicted by hydrodynamic models. A simple two-component fit is used to separate these two contributions. The extracted linear and nonlinear contributions to v4 and v5 are found to be consistent with previously measured event-plane correlations
Search for W′→tb→qqbb decays in pp collisions at √s=8 TeV with the ATLAS detector
A search for a massive W′ gauge boson decaying to a top quark and a bottom quark is performed with the ATLAS detector in pp collisions at the LHC. The dataset was taken at a centre-of-mass energy of √s=8 TeV and corresponds to 20.3 fb−1 of integrated luminosity. This analysis is done in the hadronic decay mode of the top quark, where novel jet substructure techniques are used to identify jets from high-momentum top quarks. This allows for a search for high-mass W′ bosons in the range 1.5–3.0 TeV. b-tagging is used to identify jets originating from b-quarks. The data are consistent with Standard Model background-only expectations, and upper limits at 95 % confidence level are set on the W′→tb cross section times branching ratio ranging from 0.16pb to 0.33pb for left-handed W′ bosons, and ranging from 0.10pb to 0.21pb for W′ bosons with purely right-handed couplings. Upper limits at 95 % confidence level are set on the W′-boson coupling to tb as a function of the W′ mass using an effective field theory approach, which is independent of details of particular models predicting a W′boson
Immunohistochemical Expression of Estrogen Receptor Beta in Urothelial Carcinoma of the Urinary Bladder
Background: The tenth most prevalent cancer type in the world is bladder cancer. Males are four times more likely than females to have it. The most prevalent subtype is urothelial carcinoma. Development and progression of bladder cancer are influenced by estrogen receptors.
Objectives: To examine the expression of estrogen receptor beta in bladder urothelial carcinoma and how it relates to other pathological factors of prognostic significance.
Materials and method: Fifty formalin fixed and paraffin-embedded tissue sections of cases of urothelial carcinoma from transurethral resection and radical cystectomy specimens were examined histopathologically by routine H&E stain and immunohistochemically stained with Anti-ER-beta antibody. The immunohistochemical expression of estrogen receptor beta was assessed.
Results: Of the 50 cases of urothelial carcinoma, mean age 60 ±8.7 range (41-85) years, 34 male and 16 female, estrogen receptor beta was expressed in 29 (58%) of the cases. The expression of ERβ was significantly elevated in high grade (p value 0.006). The ERβ expression was also significantly increased in advanced tumor stages (p value 0.03) and in muscle invasive tumor (p value 0.004). The presence of lymphovascular emboli was associated with higher ERβexpression.
Conclusion: ERβ expression is significantly associated with high grade and with advanced stages of urothelial carcinoma
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