Search results for "AKA"
showing 10 items of 2351 documents
An in vitro evaluation of two dentine adhesive systems to seal the pulp chamber using a glucose penetration model
2010
Objectives: To evaluate the sealing capability of Cavit TM G with or without Clearfil TM S3 Bond and Prime & Bond NT placed in the pulp chamber. Study Design: Forty single rooted premolars, extracted for orthodontic and periodontal reasons, with intact coronal surface and mature apices, were standardized to a length of 15 mm. The teeth were instrumented, filled with a gutta-percha master cone and divided into three groups to obturate the pulp chambers: Cavit TM G; Clearfil TM S3 Bond plus Cavit TM G and Prime & Bond® NT plus Cavit TM G. A glucose leakage model was used for evaluating the coronal microleakage. The Mann-Whitney test was used to evaluate the differences in the means of the glu…
Measurement of gap between abutment and fixture in dental conical connection implants. A focused ion beam SEM observation
2020
Background The aim of the authors was to examine the abutment-fixture interface in Morse-type conical implants in order to verify gaps at this level using a new microscopical approach. Material and Methods In this in vitro study, 20 abutment-fixture complexes were prepared by sectioning (longitudinal and cross-sectional to the long axis) with a microtome and then with a focused ion beam (FIB). This is a micrometric machine tool that uses gallium ions to abrade circumscribed areas to dig deeper into the cuts obtained with the microtome in order to eliminate cut-induced artifacts. This is because the FIB abrasion is practically free from artifacts, which are normally generated by the action o…
Organometallic complexes with biological molecules
2002
Novel triorganotin(IV) complexes of two beta-lactamic antibiotics, 6-[D-(-)-beta-amino-p-hydroxyphenyl-acetamido]penicillin (=amoxicillin) and 6-[D-(-)-alpha-aminobenzyl]penicillin (=ampicillin), have been synthesized and investigated both in solid and solution states. The complexes corresponded to the general formula R(3)Sn(IV)antib*H(2)O (R=Me, n-Bu, Ph; antib=amox=amoxicillinate or amp=ampicillinate). Structural investigations about configuration in the solid state have been carried out by interpreting experimental IR and 119Sn Mossbauer data. In particular, IR results suggested polymeric structures both for R(3)Sn(IV)amox.H(2)O and R(3)Sn(IV)amp*H(2)O. Moreover, both antibiotics appear …
Mechanical and electrophysiological effects of cromakalim on the human urinary bladder.
1994
The effects of cromakalim on spontaneous and induced mechanical activity of human detrusor muscle were investigated in vitro. Cromakalim produces a concentration-related decrease of spontaneous as well as carbachol- and K(+)-evoked contractions. This is the first study to utilize the patch clamp technique to elucidate the mechanism of action of cromakalim on human detrusor cells. Cromakalim hyperpolarizes the detrusor cells by increasing the net outward current which is most likely carried by potassium ions. In the human urinary bladder, this effect is mediated by a glibenclamide-sensitive potassium channel, as glibenclamide is able to diminish the relaxant effect of cromakalim and to preve…
From athletic talent development to dual career development? A case study in a Finnish high performance sports environment
2020
The focus of dual career (DC) research has shifted from exploring individual experiences within Athletic Talent Development Environments (ATDEs) toward understanding the impact of the environment and the broader cultural context on individuals’ developmental trajectories in Dual Career Development Environments (DCDEs). To comply with national and EU recommendations for socially responsible elite sport, many successful ATDEs list DC as one of their primary values and advertise themselves as DCDEs in order to attract more athletes. The present study aimed to evaluate whether and how a talent development environment for youth athletes in Finland has transformed from an ATDE to DCDE by explorin…
A New Software Tool for Design, Optimization, and Complete Analysis of Rotating Electrical Machines Windings
2015
In this paper, a new software tool developed by the authors for ac winding design, optimization, and complete analysis is presented. In particular, this software can be used as a valid aid in design and analysis for a wide variety of motor and generator windings with generic number of phases (including the case of those machines in which some slots are left empty), pole pairs, slot number, and so on. The calculation of winding factors and the evaluation of their harmonic distribution is also accomplished. The software is implemented in the MATLAB programming environment. By means of some examples, covering the most relevant winding types, the capabilities of this software will be shown. In …
Naiskuvan rakentuminen Sport-lehdessä
2014
Informācijpratība doktorantūras studentiem
2019
Konferences ziņojumā izklāstīts apkopojums par doktorantūras studentu informacionālām vajadzībām studijās un pētniecības darbā. Autore apkopojusi atziņas no zinātniskās literatūras bibliotēkzinātnes un izglītības jomās, kā arī no pieredzes, strādājot akadēmiskā vidē. Doktorantūras studentu informacionālās vajadzības nosaka to kompleksā daba, kā no vienas puses studiju un no otras puses pētniecības procesa dalībniekiem. Informācijas un komunikācijas tehnoloģijas ietekmē pētniecības darbplūsmu, un tiek attīstīti arvien jauni risinājumi dažādu pētniecības procesu veikšanai. Bibliotēku personālam, attīstot informācijpratības pakalpojumus, jāņem vērā doktorantūras studentu informacionālo vajadzī…
Atteikums reģistrēt Rīgas Pastafariānisma draudzi reliģisko organizāciju reģistrā kā Eiropas Cilvēktiesību konvencijas pārkāpums: domu un pārliecības…
2017
Domu, pārliecības un reliģijas brīvība, kas nostiprināta Eiropas Cilvēktiesību konvencijas 9.pantā, ir viena no demokrātiskas sabiedrības pamatiem, un atteikums reģistrēt Rīgas Pastafariānisma draudzi reliģisko organizāciju reģistrā var novest pie šo brīvību pārkāpuma. Darba mērķis ir izpētīt, kādu Konvencijas 9.panta aizsardzību bauda Rīgas Pastafariānisma draudze un pastafariānisms kopumā un kādas ir domu un pārliecības brīvību nošķiršanas no reliģijas brīvības tiesiskās un praktiskās sekas. Pētījuma ietvaros tiek noskaidrots, kādi ir valsts pienākumi attiecībā pret Rīgas Pastafariānisma draudzi pārliecības un reliģijas brīvības ietvaros. Darba rezultātā autors secina, ka atteikums reģist…
Sealing capacity of a photochromatic flowable composite as protective base in nonvital dental bleaching.
2006
Aim To evaluate microleakage of a flowable composite used as a protective isolating base, applied with different adhesive systems. Methodology Seventy root-filled teeth were divided into seven groups. A flowable composite base (Tetric Flow Chroma) was used with three adhesive techniques (Syntac, Excite, Excite DCS; in the three cases with and without acid etching) and in a control group without dentine conditioning or adhesive placement. A 30% hydrogen peroxide solution was applied for 24 h in the pulp chambers, followed by the placement of a dye (silver nitrate) for 4 h. Each tooth was sectioned longitudinally, and examined under 4× magnification to assess the tooth/restoration dye leaka…