3,460 research outputs found
R&D investments and corporate cash holdings
No full texthis paper presents evidence about how research and development (R&D) expenditures affect corporate cash holdings in European country groups that differ in their innovation capacity. In theory, one can expect intangible investments such as R&D to result in higher cash stocks than fixed investments, particularly because intangible capital is less suitable as collateral for obtaining external funds. The relationship can be expected to be particularly strong in innovative countries. These countries carry out a relatively high proportion of cutting-edge R&D, which tends to be particularly risky and may be associated with substantial gestation lags before becoming productive. These features tend to increase firms' precautionary cash holdings. To investigate this issue in a European context, we examine different groups of countries that are clustered based on differences in their innovative capacity. Our estimation results confirm a positive relation between changes in R&D investment and changes in cash holdings, whereas changes in fixed investment do not appear to be related to changes in cash positions. The impact of changes in R&D on cash tends to be higher for country groups characterized by a high level of innovative capacity than for countries with moderate levels of innovative capacity. However, the differences across country groups are less pronounced than expected
Ernia di Richter: a case report. Considerazioni clinico-terapeutiche.
No full text[Richter's hernia: a clinical case and the clinico-therapeutic considerations]. Fornaro R, Terrizzi A, Davini MD, Canaletti M, Baldi E, Bonfante P, Sticchi C, Cavaliere D, Ferraris R.
The authors report a case of Richter's hernia. They underline main clinical and therapeutic patterns, emphasizing the need of an early diagnosis and surgery. This is a hernia of abdominal wall with partial entrapment of bowel wall (antimesenteric site) through a small ring. The incidence increased in the last years because of diffusion of laparoscopic techniques. Richter's hernia could be asymptomatic for a long time or show vanish sign. Sometimes this hernia can be diagnosed during surgery. The clinical signs are conclamated if hernia is complicated by strangulation. High mortality is justified by performing too late diagnosis and operation
Erratum: Parotid gland edema after chlorhexidine mouthrinse: Case report and literature review (The Open Dentistry Journal, 2018, 12: 1147-1151)
No full textParotid Gland Edema After Chlorhexidine Mouthrinse: Case Report and Literature Review The Open Dentistry Journal, 2018, 12: 1147-1151 The correct list of authors’ names is provided and replaced online which is mentioned as under: Federico Berton1, Giulia Pipinato1, Michele Maglione1, Domenico Baldi2, Roberto Di Lenarda1 and Claudio Stacchi1,* The published list of authors was: Federico Berton1, Pipinato Giulia1, Maglione Michele1, Baldi Domenico2, Di Lenarda Roberto1 and Stacchi Claudio1
Comparison between Colifast (R) Milk and the standard method for the detection of coliforms in pasteurised milk
No full textColifast(R) Milk is a rapid screening test for the detection of total coliforms in milk based upon the measurement of change in fluorescence during an incubation period, due to the targeted beta-D-galactosidase activity on 4-methyl-umbelliferone-beta-D-galactoside contained in a selective growth medium. In this work, 800 samples of homogenised pasteurised milk, with different fat content (1.5 and 3.5%) and contaminated with various concentrations of coliforms ( from 0.03 to > 10000 CFU . mL(-1)), were analysed in order to compare the results obtained by Colifast(R) Milk with those by the standard method. The effect of the incubation temperature (30 and 39 degreesC) was also investigated. For the totality of samples the correspondence between coliform counts obtained by the two methods was 64% (r(2) = 0.743; P = 0.88). The performance of Colifast(R) Milk was notably affected by the level of contamination, since for samples with coliforms > 10 CFU . mL(-1) the correspondence between the two methods achieved 86% (r(2) = 0.837; P = 0.94) whereas for samples with coliforms less than or equal to10 CFU . mL(-1) it fell to 42% (r(2) = 0.073; P = 0.33). Fat content also influenced the response of the Colifast(R) system since the correspondence decreased from 80% (r(2) = 0.767; P = 0.91) for semi-skimmed milk to 48% (r(2) = 0.724; P = 0.63) for whole milk. Incubation at 30 degreesC improved the recovery of coliforms by Colifast(R) Milk as the correspondence between values obtained with the two methods reached 72% (r(2) = 0.760; P = 0.89) if compared with 56% (r(2) = 0.735; P = 0.87) when the incubation temperature was 39 degreesC. Under these operating conditions the sensitivity showed by the fluorometric method appeared to be not sufficient for the detection of coliforms in pasteurised milk
Il sistema agro-alimentare lombardo e crisi globale
No full textLa crisi globale sta provocando un impatto rilevante anche sulle imprese del sistema agroalimentare lombardo. L’aumento dei prezzi del
2008 ha stimolato la produzione nella maggior parte dei paesi, ma il crollo avvenuto in tempi brevissimi si è verificato in concomitanza con la crescita dei costi provocando un’immediata caduta dei redditi, in particolare nei paesi che hanno un elevato ricorso ai mezzi di produzione. Analizzando
congiuntamente la dinamica dei prezzi agricoli all’origine, di quelli alla produzione dei beni alimentari trasformati e di quelli al consumo, si evidenzia una minore variabilità dei prezzi alla produzione e di quelli al consumo rispetto a quella molto forte, sia durante l’anno sia tra gli anni, che connota i prezzi all’origine. Dopo un triennio (2006-08) con incrementi dei prezzi all’origine ed alla produzione superiori a quelli dei beni alimentari al consumo, nel 2009 si è verificato l’andamento opposto, con un calo
rilevante dei prezzi all’origine ed alla produzione e con un lieve aumento dei prezzi al consumo. In questo quadro i dati Istat sui consumi alimentari familiari indicano per la Lombardia nel 2008 un aumento dell’acquisto medio di generi alimentari del 3,6% e nel 2009 un calo pari
al 2,7%, con un piccolo spostamento tra prodotti animali (in calo) e vegetali
The XMM-Newton long look of NGC 1365: uncovering of the obscured X-ray source
No full textWe present an analysis of the extreme obscuration variability observed during an XMM–Newton 5-d continuous monitoring of the active galactic nuclei (AGN) in NGC 1365. The source was in a reflection-dominated state in the first ∼1.5 d, then a strong increase in the 7–10 keV emission was observed in ∼10 h, followed by a symmetric decrease. The spectral analysis of the different states clearly shows that this variation is due to an uncovering of the X-ray source. From this observation, we estimate a size of the X-ray source DS < 1013 cm, a distance of the obscuring clouds R∼ 1016 cm and a density n∼ 1011 cm−3. These values suggest that the X-ray absorption/reflection originates from the broad-line region clouds. This is also supported by the resolved width of the iron narrow Kα emission line, consistent with the width of the broad Hβ line
Imprint of f(R) gravity on nonlinear structure formation
No full textWe test the imprint of f(R) modified gravity on the halo mass function, using N-body simulations and a theoretical model developed in [M. Kopp, Phys. Rev. D 88, 084015 (2013)]. We find a good agreement between theory and simulations ∼5%. We extend the theoretical model to the conditional mass function and apply it to the prediction of the linear halo bias in f(R) gravity. Using the halo model we obtain a prediction for the nonlinear matter power spectrum accurate to ∼10% at z=0 and up to k=2h/Mpc. We also study halo profiles for the f(R) models and find a deviation from the standard general relativity (GR) result up to 40%, depending on the halo masses and redshift. This has not been pointed out in previous analysis. Finally we study the number density and profiles of voids identified in these f(R) N-body simulations. We underline the effect of the bias and the sampling to identify voids. We find significant deviation from GR when measuring the f(R) void profiles with fR0<-10-6
Induced innovation in Italy : an error correction model for the period 1968-2002
No full textIn this work we utilise CES approach where factor ratios (mechanical power/labour and fertilizer/land) are regressed on price ratios and efficiency parameters (public and private R&D) to obtain a direct test of the induced innovation in Italian case for the period 1968-2002. Provided that inducement hypothesis implies a long run relationship an error correction model (ECM) is estimated to separate long-run effect, that is technological innovation, from short-run effects, that is factors substitution. The results corroborate the induced innovation hypothesis and underline the importance of private R&D in Italian agriculture
Interaction for a shared knowledge with Reperio. The Cardano case
No full textThe article explains the metodological assumptions (web ontology) and provides examples of a new experimental work computer on a text by Girolamo Cardano, The Contradicentia medica. The work is a collaboration with Fondazione Rinascimento Digitale, in Florenc
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