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Search Results: 1 - 10 of 249223 matches for " Antonio C.;Degrande "
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Parasitismo natural de ovos de Alabama argillacea Hüb. e Heliothis virescens Fab. (Lep.: Noctuidae) por Trichogramma pretiosum Riley (Hym.: Trichogrammatidae) em algodoeiros no Mato Grosso do Sul
Fernandes, Marcos G.;Busoli, Antonio C.;Degrande, Paulo E.;
Anais da Sociedade Entomológica do Brasil , 1999, DOI: 10.1590/S0301-80591999000400012
Abstract: the experiments were carried out on cotton in the region of dourados, mato grosso do sul state, in 1996-97. from weekly samples of eggs of alabama argillacea hüb. and heliothis virescens fab., we determined the level of parasitism, sex ratio and total number of adults of trichogramma pretiosum riley emerged from each host egg. the percentage of a. argillacea eggs parasitized by t. pretiosum was null at 31 days after the emergence of the plants (dae) and increased to more than 60% from the 58th day (dae)on; sometimes the parasitism reached almost 100%. h. virescens eggs also showed high levels of parasitism by t. pretiosum. the number of adult females emerged from parasitized eggs was always higher than the number of adult males and represented around 60% of the total adults emerged. on the average, around two adult wasps emerged from each egg of a. argillacea or h. virescens. in the region of dourados, the parasitism by t. pretiosum was high in both a. argillacea and h. virescens eggs, despite the high levels of insecticide use.
BSM constraints from EW measurements
Degrande, Celine
High Energy Physics - Phenomenology , 2013,
Abstract: We investigate the impact of heavy new physics on W bosons productions at hadron colliders using an effective field theory. After listing all the relevant dimension-six operators, their effects are computed taking into account LEP constraints. Additionally, the effective approach is compared to anomalous couplings regarding several issues like unitarity.
New physics in top decay
Degrande, Celine
High Energy Physics - Phenomenology , 2013,
Abstract: After a short introduction to effective field theories, most of their features are illustrated using the top decay. The effects of heavy new physics on the top decay are computed and the constraints on the coefficients of the dimension-six operators are derived from the available measurements.
Automated Two Higgs Doublet Model at NLO
Celine Degrande
Physics , 2014,
Abstract: The Two Higgs Doublet Model at NLO is generated automatically by FeynRules and NLOCT and allows any computation to be performed at NLO in QCD inside MadGraph5_aMC@NLO. The model can handle both four and five massless flavours. Preliminary results of the shape comparison between the two schemes are shown.
New physics signal in top physics
Celine Degrande
Physics , 2012,
Abstract: Effective field theories provide a model independent parametrization of the physics beyond the SM if the new degrees of freedom are heavy and complement thus the searches for resonances. In this talk, I will apply this method to the top sector which is expected to play a special role in many BSM scenarios. I will then show the effects of those dimension-six operators on cross-sections and distributions at hadron colliders. Those results together with the present data from the LHC and the Tevatron already constrain the parameter space
A basis of dimension-eight operators for anomalous neutral triple gauge boson interactions
Celine Degrande
Physics , 2013, DOI: 10.1007/JHEP02(2014)101
Abstract: Four independent dimension-eight operators give rise to anomalous neutral triple gauge boson interactions, one CP-even and three CP-odd. Only the CP-even operator interferes with the Standard Model for the production of a pair of on-shell neutral bosons. However, the effects are found to be tiny due mainly to the mismatch of the Z boson polarization between the productions from the SM and the new operator.
Automated next-to-leading order predictions for new physics at the LHC: the case of colored scalar pair production
Céline Degrande,Benjamin Fuks,Valentin Hirschi,Josselin Proudom,Hua-Sheng Shao
Physics , 2014, DOI: 10.1103/PhysRevD.91.094005
Abstract: We present for the first time the full automation of collider predictions matched with parton showers at the next-to-leading accuracy in QCD within non-trivial extensions of the Standard Model. The sole inputs required from the user are the model Lagrangian and the process of interest. As an application of the above, we explore scenarios beyond the Standard Model where new colored scalar particles can be pair produced in hadron collisions. Using simplified models to describe the new field interactions with the Standard Model, we present precision predictions for the LHC within the MadGraph5 aMC@NLO framework.
Vildagliptin: a new oral treatment for type 2 diabetes mellitus
Chantal Mathieu,Evy Degrande
Vascular Health and Risk Management , 2008,
Abstract: Chantal Mathieu, Evy DegrandeDepartment of Endocrinology, Katholieke Universiteit Leuven, Leuven, BelgiumAbstract: Vildagliptin is a new oral antidiabetic agent that enhances pancreatic islet cell responsiveness to glucose. An extensive clinical program involving approximately 22,000 patients and 7000 patient-years of exposure to vildagliptin has shown that the agent is well tolerated and efficacious in improving glycemic control in patients with type 2 diabetes mellitus (T2DM). Monotherapy trials have shown that significant HbA1c lowering is accompanied by body weight-neutral and lipid-neutral effects, low risk of edema, and low risk of hypoglycemia. These characteristics make vildagliptin a favorable partner for combination therapy. Studies of vildagliptin as an add-on to metformin have shown significant improvements in glycemic control (comparable to that of thiazolidinedione add-on), with the combination being well tolerated and associated with low risks for hypoglycemia and adverse effects on weight or lipid levels. Good tolerability and clinically relevant improvements in glycemic control have also been observed with vildagliptin as an add-on treatment to sulfonylurea, thiazolidinedione, or insulin treatment or in initial combination treatment with pioglitazone. Improved β-cell function and glycemic control have been shown with vildagliptin in subjects with impaired glucose tolerance and in T2DM patients with mild hyperglycemia, with some evidence in the latter suggesting the potential for modifying disease course.Keywords: diabetes, vildagliptin, incretin, metformin, add-on treatment, hypoglycemia
Desfolha artificial simulando danos de pragas na cultura do girassol (Helianthus annuus L., Asteraceae)
Lima Junior, Izidro dos Santos de;Bertoncello, Thiago Ferreira;Melo, Elmo Pontes de;Degrande, Paulo Eduardo;Kodama, Cássio;
Revista Ceres , 2010, DOI: 10.1590/S0034-737X2010000100005
Abstract: loss of leaf area in sunflower may be caused by different factors, among them by defoliating insects, which are generally controlled with insecticide applications. artificial defoliation in plants of economic value is a useful methodology to simulate attacks of pests on crops aiming at determining levels of economic damage. the objective of this study was to evaluate production components of sunflower subjected to increasing levels of defoliation 0, 10, 25, 50, 75 and 100% in three different phenological crop stages: v6 (six leaves with minimum of 4.0 cm in length), r1 (when inflorescence surrounded by immature bracts becomes visible) and r5.5 (50% of the disk flowers are fertilized or in anthesis). the experiment consisted of 18 treatments, in a randomized block design with four replicates. there was significant effect of treatment interaction for all components of production evaluated (head diameter, total weight of seeds per plant and weight of one hundred seeds), showing that the effect of defoliation depends on the phenological stage of the plant. the r5.5 stage was more sensitive to defoliation, causing losses in all evaluated production components.
Selectivity of insecticides for adult workers of Apis mellifera (Hymenoptera: Apidae)
THOMAZONI,DANIELLE; SORIA,MIGUEL F; KODAMA,CáSSIO; CARBONARI,VLADSON; FORTUNATO,RONI P; DEGRANDE,PAULO E; VALTER,V. A. Jr;
Revista Colombiana de Entomología , 2009,
Abstract: cotton is a crop that is attractive to a wide variety of organisms, including pests, natural enemies of the pests and arthropod pollinators. consequently, integrated pest management is necessary for this crop as chemical control is often required to avoid production losses. among pollinators found on cotton, apis mellifera is one of the most important, as it can increase cotton production 20 - 30%. on the other hand, selectivity is an important characteristic of insecticides, as it makes it possible to lessen impacts on pollinators and other non-target organisms. we examined the toxicity of various insecticides for honey bees foraging on cotton in a greenhouse, including turbine? 500 wg (150 g ha-1) (flonicamid), actara? 250 wg (200 g ha-1) (thiamethoxam), cartap? 500 sp (1500 g ha-1) (cartap), talstar? 100 ce (1000 ml ha-1) (bifenthrin) and match? 50 ce (1000 ml ha-1) (lufenuron). applications of talstar?, actara? and cartap? were quite toxic. talstar? was the most deadly, while match ce? and turbine? were only slightly toxic for adult honey bees. the match ce? treatment mortality was similar to that of the control; thus, we classified it as innocuous for a. mellifera adults.
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