Search results for "pair"
showing 10 items of 2908 documents
Direct observation of a borane–silane complex involved in frustrated Lewis-pair-mediated hydrosilylations
2014
Perfluorarylborane Lewis acids catalyse the addition of silicon–hydrogen bonds across C=C, C=N and C=O double bonds. This ‘metal-free’ hydrosilylation has been proposed to occur via borane activation of the silane Si–H bond, rather than through classical Lewis acid/base adducts with the substrate. However, the key borane/silane adduct had not been observed experimentally. Here it is shown that the strongly Lewis acidic, antiaromatic 1,2,3-tris(pentafluorophenyl)-4,5,6,7-tetrafluoro-1-boraindene forms an observable, isolable adduct with triethylsilane. The equilibrium for adduct formation was studied quantitatively through variable-temperature NMR spectroscopic investigations. The interacti…
Socio-emotional Problems Experienced by Deaf and Hard of Hearing Students in Ethiopia
2015
This study compares the socio-emotional problems experienced by deaf and hard of hearing (DHH) students with those of hearing students in Ethiopia. The research involved a sample of 103 grade 4 students attending a special school for the deaf, a special class for the deaf and a regular school. Socio-emotional problems were measured using Goodman's self-report measure, the Strengths and Difficulties Questionnaire for children and adolescents. Participants were selected from seven towns in Ethiopia. The results show that, compared to the hearing sample, the DHH students experienced more severe socio-emotional problems across all dimensions, regardless of whether they were in special classes o…
Measurements of the top quark branching ratios into channels with leptons and quarks with the ATLAS detector
2015
Measurements of the branching ratios of top quark decays into leptons and jets using events with t[bar over t] (top antitop) pairs are reported. Events were recorded with the ATLAS detector at the LHC in pp collisions at a center-of-mass energy of 7 TeV. The collected data sample corresponds to an integrated luminosity of 4.6 fb[superscript −1]. The measured top quark branching ratios agree with the Standard Model predictions within the measurement uncertainties of a few percent.
Keurusselän denitrifikaatioaktiivisuuden ajallinen ja paikallinen vaihtelu
2015
Vesien rehevöityminen on maailmanlaajuinen ongelma. Ihmisen toiminnan takia ravinteita, kuten typpeä ja fosforia, kulkeutuu vesiin paljon aiheuttaen mm. massiivisia leväkukintoja ja happikatoa orgaanisen aineen hajotessa. Tämä vähentää mm. vesien virkistysarvoa sekä kaupallista arvoa. Merissä typpi on rajoittava ravinne ja suurin osa typestä päätyy meriin jokivesien mukana. Järvissä tapahtuvassa denitrifikaatiossa typpi muuttuu kaasumaiseen muotoon, mikä vähentää merien typpikuormaa. Tutkimuksessamme mittasimme denitrifikaationopeutta kolmella eri mittauspisteellä Keuruunselällä vuosien 2013 ja 2014 aikana viitenä kertana. Jaoimme aineiston vuodenajan mukaan kesään, syksyyn ja talveen. Hypo…
Nitrogen removal by microbial processes in aquatic systems
2012
La vanité et le tragique existentiel dans l’œuvre durassienne
2018
Duras’s work is a deep reflection on the emptiness of the human condition. In her works, a man realizes his/her inability to live in a senseless, unfriendly world in which all efforts to change the course of events or improve fate turn out to be futile. Therefore they express senselessness of any activity or commitment of the individual as confronted with the cruelty of fate. This state of affairs results from the inseparable connection between life and death inscribed in human nature. The works by Duras reflect the end of the world so per-ceived and the absurd manifestations of the inevitable disaster. In this dramatic way, the author shows the tragedy of human existence associated, in par…
Performance of $b$-Jet Identification in the ATLAS Experiment
2016
We thank CERN for the very successful operation of the LHC, as well as the support staff from our institutions without whom ATLAS could not be operated efficiently. We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWFW and FWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF, DNSRC and Lundbeck Foundation, Denmark; IN2P3-CNRS, CEA-DSM/IRFU, France; GNSF, Georgia; BMBF, HGF, and MPG, Germany; GSRT, Greece; RGC, Hong Kong SAR, China; ISF, I-CORE and Benoziyo Center, Israel; INFN, Italy; MEXT an…
Targeting DNA double strand break repair with hyperthermia and DNA-PKcs inhibition to enhance the effect of radiation treatment
2016
// Bregje van Oorschot 1 , Giovanna Granata 1 , Simone Di Franco 2 , Rosemarie ten Cate 1 , Hans M. Rodermond 1 , Matilde Todaro 3 , Jan Paul Medema 1 , Nicolaas A.P. Franken 1 1 Laboratory for Experimental Oncology and Radiobiology (LEXOR), Center for Experimental Molecular Medicine, Department of Radiation Oncology, Academic Medical Center, Cancer Genomics Center, Amsterdam, The Netherlands 2 Department of Surgical, Oncological and Stomatological Sciences (DICHIRONS), Cellular and Molecular Pathophysiology Laboratory, University of Palermo, Palermo, Italy 3 Biomedical Department of Internal and Specialistic Medicine (DIBIMIS), University of Palermo, Palermo, Italy Correspondence to: Nicol…
Optimal inter-stimulus interval for interpolated twitch technique when using double pulse stimulation
2013
Interpolated twitch technique is a method frequently used to assess voluntary activa- tion. This method uses electrically evoked twitch superimposed on the voluntary activi- ty and its comparison with the twitch in rested muscle i.e. control twitch, to evaluate completeness of muscle activation. The purpose of this study was to investigate the ef- fect of interval in paired stimulation on control twitch in young and elderly individuals with bent and flexed knee positions. Supramaximal electrical stimulation consisted of one single stimulus and eight paired stimulation with intervals from 5 to 40ms, with increments of 5ms. In evoked twitches normalized peak torque amplitude (NPT), time to pe…
Dialoga secības izkārtojums Oskara Vailda lugā “Ideāls vīrs”
2016
Analizējot dramaturģiskus darbus, īpaši vērts aplūkot dialoga secības izkārtojumu. Šie literārie teksti lielākoties sastāv no mutvārdu diskursa, tāpēc veids, kā runātāji savā starpā virza un attīsta sarunu, daudz atklāj par atainoto situāciju. Šajā Bakalaurā darba analizēts dialoga secības izkārtojums Oskara Vailda lugas “Ideāls vīrs” fragmentā, kurā sarunājas lugas divi galvenie personāži, Sers Roberts Čilterns un Misis Čevelija, lugas pirmajā cēlienā. Ņemot vērā, ka analīzei izvēlētais fragments ataino šantāžu un izspiešanu, pētījums koncentrēts uz to, kā dialoga secības izkārtojums atklāj spēku samērus starp personāžiem. Analīzes procesā izmantota kvalitatīvā metodē, toties metodoloģija …