Search results for " Root"
showing 10 items of 627 documents
Ornamento criminale. La lezione di Louis H. Sullivan, John W. Root e Adolf Loos
2015
Nell’età contemporanea in cui l’architettura tende spesso alla ricerca della spettacolarità e a creare forme in cui la destinazione d’uso si annulla in un’esperienza estetica, la questione dell’ornamento torna a essere centrale nel dibattito filosofico e architettonico. Di contro, le problematiche legate all’ecologia e al paesaggio pongono sempre più insistentemente l’accento su un’etica della responsabilità che condanna i “crimini” di un’estetica disinteressata al rispetto dell’ambiente. Alla luce di queste coordinate può essere utile riprendere le riflessioni di quei teorici, come Louis H. Sullivan, John W. Root e Adolf Loos, che tra Ottocento e Novecento hanno dichiarato in modo esplicit…
INVERSE RELATIONSHIP BETWEEN AORTIC ROOT DIAMETER AND RENAL FUNCTION IN HYPERTENSIVE SUBJECTS
2015
Introduction: Dilatation of aortic root is associated with presence and severity of aortic regurgitation and risk for aortic dissection. Recent studies performed in general population suggest that enlarged aortic root diameter (ARD) may predict cardiovascular events in absence of aneurysmatic alterations. Little is known about the influence of renal function on ARD. Aim: To assess the relationships between glomerular filtration rate (GFR) and ARD in hypertensive subjects. Methods: We enrolled 611 hypertensive individuals (mean age: 52 ± 15 years; men 63 %) consecutively attending our outpatient nephrology and hypertension unit. Patients on dialysis treatment, with valvulopathy more than mil…
Neck Pain and Rehabilitation
2016
Neck pain is par excellence one of the most common disorders of the musculoskeletal system, second only to low back pain. It constitutes 40 % of all backache. The International Association for the Study of Pain (IASP) defines pain of cervical origin coming from an area between the nuchal line and another imagi-nary line that passes through the lower end of the spinous process of the first thoracic vertebra and the sagittal plans tangent to the side edges of the neck. This definition considers therefore posterior pain which in turn can be divided into high pain, up to C3, and lower pain, down from C4. Also, as all diseases, it can be divided into acute and chronic neck pain, merely according…
Persistence in Italian rate of Unemployment in presence of breaks and regional asymmetries
2006
This work aims to test the persistence of Italian unemployment rate during last fifty years. To this scope we find evidences of a unit root, also when we allow for the presence of structural shifts so that the level of unemployment has a path dependant behaviour. Secondly, we test a possible explanation of the persistence through the presence of cointegration relationships with some institutional labour market variables, such as the union membership. Thirdly, there are asymmetric macroregional behaviours so that the great bulk of persistence is given by Center – Southern unemployment. It implies that changes in unemployment level have longer duration in the poorest part of the country.
Involvement of nitrate reductase and pyoverdine in competitiveness of Pseudomonas fluorescens strain C7R12 in soil
2001
ABSTRACT Involvement of nitrate reductase and pyoverdine in the competitiveness of the biocontrol strain Pseudomonas fluorescens C7R12 was determined, under gnotobiotic conditions, in two soil compartments (bulk and rhizosphere soil), with the soil being kept at two different values of matric potential (−1 and −10 kPa). Three mutants affected in the synthesis of either the nitrate reductase (Nar − ), the pyoverdine (Pvd − ), or both (Nar − Pvd − ) were used. The Nar − and Nar − Pvd − mutants were obtained by site-directed mutagenesis of the wild-type strain and of the Pvd − mutant, respectively. The selective advantage given by nitrate reductase and pyoverdine to the wild-type strain was as…
Effectiveness of a new method of disinfecting the root canal, using Er, Cr:YSGG laser to kill Enterococcus faecalis in an infected tooth model.
2013
Some lasers have demonstrated to provide effective disinfection when used as adjunctive device to the conventional treatment. The aim of this in vitro study was to determine the effectiveness of the erbium, chromium:yttrium scandium gallium garnet (Er, Cr:YSGG) laser by measuring its bactericidal effect inside the root canal experimentally colonized with Enterococcus faecalis. The laser was tested at different irradiation times (30 and 60 s) and energy of impulses (75 and 25 mJ). A total of 52 single-rooted extracted human teeth were endodontically prepared with rotary instrumentation. All were sterilized and inoculated with a suspension of E. faecalis (105 bacteria/ml). The teeth were rand…
Monetary union and productivity differences in Mercosur countries
2006
Abstract This paper investigates cross-country productivity convergence among Mercosur members plus associates (Chile and Bolivia) and Peru, during the period 1960–1999. The testing strategy is based on the definitions of time series convergence by Bernard and Durlauf (1995) [Bernard, A. B., & Durlauf, S. N. (1995). Interpreting tests of convergence hypothesis. Journal of Econometrics , 71 , 161–173] and applies sequentially the multivariate unit root tests proposed by Sarno and Taylor (1998) [Sarno, L., & Taylor, M. (1998). Real exchange rates under the recent float: Unequivocal evidence of mean reversion. Economics Letters , 60 , 131–137], Flores et al. (1995) [Flores, R., Preumont, P.Y.,…
LC–ESI–FT–MSn Metabolite Profiling of Symphytum officinale L. Roots Leads to Isolation of Comfreyn A, an Unusual Arylnaphthalene Lignan
2020
Preparations of comfrey (Symphytum officinale L.) roots are used topically to reduce inflammation. Comfrey anti-inflammatory and analgesic properties have been proven in clinical studies. However, the bioactive compounds associated with these therapeutic activities are yet to be identified. An LC&ndash
Rapid determination of baicalin and total baicalein content in Scutellariae radix by ATR-IR and NIR spectroscopy
2013
In this study methods for the quantification of baicalin and total baicalein in Scutellariae radix with near infrared (NIR) spectroscopy and attenuated-total-reflectance mid-infrared (ATR-IR) spectroscopy in hyphenation with multivariate analysis were developed and compared. The reference analysis was performed by high performance liquid chromatography coupled to diode array detection (HPLC-DAD). Different pretreatments like standard normal variate (SNV), multiplicative scatter correction (MSC), first and second derivative Savitzky-Golay were applied on the spectra to optimize the calibrations. A principal component analysis was performed with both spectroscopic methods to distinguish wild …
In vitro rooting and acclimatization of Sicilian Hypericum perforatum
2015
Hypericum perforatum L. is traditionally used as a medicinal plant because of different bioactive compounds with documented antidepressant and anti-inflammatory activities. Plantlets mass production with high content of these secondary metabolites has been enhanced through in vitro culture but often the process has been stopped at the multiplication phase. A study was conducted in order to set up an efficient in vitro rooting and acclimatization protocol of a H. perforatum Sicilian genotype well-adapted to south Mediterranean conditions. Aseptic nodal segments were cultured on to a Murashige and Skoog (MS) basal medium supplemented with 4.44 μM 6-benzyladenine (BA) for multiplication. Micro…