355 research outputs found
Challenges in delivering a brand promise - focusing on municipal healthcare organisations
Purpose To investigate how healthcare professionals understand a new organisational brand and examine the ideas discussed in relation to it within health care organisations. Design/methodology/approach The research is based on a discursive approach that facilitates understanding how the informants perceived a new organisation brand and how that might shape their activities in the enterprise. Findings The study identified four distinct interpretative repertoires: the organisational brand as an economic solution, the magic wand, the factory, and a servant to the customer. The new brand was understood in terms of economic and business-like functions marked by external branding and its signs (logos etc.). The brand is not communicated to patients or colleagues, and the factory metaphor is applied to work practices. Hence, several potential dilemmas arise concerning the brand promise, customer expectations, economic and efficiency gains and the professional values of employees. Research limitations/implications Adoption of private-sector practices in semi-public or public-sector organisations is common. This study focuses on how private-sector ideas diffuse into the organisations and how they are translated within them. Practical implications We suggest a stronger emphasis on internal branding as a reconciliation to enhance legitimacy, high-quality customer service and staff wellbeing. Originality/value Theoretically, the unique contribution of the study is drawing upon health care branding, dilemma theory and discursive institutionalism in its interpretation. Consequently, it demonstrates how ideas about the brand and public health care are translated and communicated in the examined discourses and how those ideas reconstruct understanding and change behaviour within the organisations
Laser hardening of steel sintered parts
The possibility of applying rapid and localized laser hardening to near-net shape parts, like the ones deriving from powder metallurgy (P/M) is investigated, demonstrating that even low alloyed steels (Fe + 2% Cu + 0,7% C) can be successfully heat treated with minimal or no dimensional variations. Laser hardening conditions have been selected on the basis of the results of the previous research, carried out by means of an Nd-YAG high power system [1]. To avoid some carbon loss, observed on previous activities, the samples have been protected by neutral atmosphere. The microstructural features of the laser hardened steels have been analyzed by optical microscopy, whereas the surface micro-geometry has been characterized by scanning electron microscope. Hardened depth (HD), hardened width (HW) and hardened area (HA) have been measured as well. As expected, the micro-hardness profiles present a sharp drop at low distance from the hardened surface. The typical splitting between hardened zone and heat-Affected zone (HAZ), well known from laser hardened fully dense steels, has been observed also on low-Alloy sintered steels. The use of a protective atmosphere has been helpful to control surface decarburization and to prevent oxidation. The research confirm that Laser transformation Hardening (LTH) is a suitable hardening process of P/M components, through the action of a scanning laser beam. The short heating time and the modest volume fraction structurally modified can contribute to avoid part distortion, in comparison with other hardening methods
Pulsed Current Effect on the Hard Anodizing of an AlSi10Mg Aluminum Alloy Obtained via Additive Manufacturing
The hard anodizing treatments of cast Al-Si alloys are notoriously difficult. Indeed, their microstructural features hinder the growth of a uniform, compact, and defect-free anodic oxide. In this paper, AlSi10Mg samples, produced via Gravity Casting (GC) and Additive Manufacturing, i.e., Laser Powder Bed Fusion (L-PBF), were hard anodized in a sulfuric acid bath, in order to verify how the particular microstructure obtained via L-PBF affects the thickness, hardness, compactness, and defectiveness of the anodic oxide. Moreover, for the first time, Pulsed Direct Current (PDC) procedures were used to perform the hard anodizing treatments on additively manufactured AlSi10Mg alloy. Several combinations of temperature and electrical parameters, i.e., current density, frequency, and Duty Cycle, were tested. The anodized samples were characterized through optical microscopy analysis, Scanning Electron Microscopy (SEM) analysis, and accelerated corrosion tests, i.e., Potentiodynamic Polarization (POL) and Electrochemical Impedance Spectroscopy (EIS) measurements. The PDC procedures allowed improvement of the compromise between evenness, compactness, and defectiveness. Among the attempted PDC procedures, a specific combination of electrical parameters and temperature allowed the best results to be obtained, i.e., the highest hardness and the lowest volumetric expansion values without compromising the oxide quality rating and the corrosion resistance behavior. However, none of the attempted PCD strategies allowed the hardness values obtained on samples produced via GC to be reached
Differential Physiological Responses Elicited by Ancient and Heritage Wheat Cultivars Compared to Modern Ones.
Although ancient, heritage, and modern wheat varieties appear rather similar from a nutritional point of view, having a similar gluten content and a comparable toxicity linked to their undigested gluten peptide, whenever the role of ancient end heritage wheat grains has been investigated in animal studies or in clinical trials, more anti-inflammatory effects have been associated with the older wheat varieties. This review provides a critical overview of existing data on the differential physiological responses that could be elicited in the human body by ancient and heritage grains compared to modern ones. The methodology used was that of analyzing the results of relevant studies conducted from 2010 through PubMed search, by using as keywords "ancient or heritage wheat", "immune wheat" (protein or peptides), and immune gluten (protein or peptides). Our conclusion is that, even if we do not know exactly which molecular mechanisms are involved, ancient and heritage wheat varieties have different anti-inflammatory and antioxidant proprieties with respect to modern cultivars. It is, therefore, reasonable to assume that the health proprieties attributed to older cultivars could be related to wheat components which have positive roles in the modulation of intestinal inflammation and/or permeability
Combined Effects of Age and Comorbidities on Electrocardiographic Parameters in a Large Non-Selected Population
Background: Previous studies have evaluated average electrocardiographic (ECG) values in healthy subjects or specific subpopulations. However, none have evaluated ECG average values in not selected populations, so we examined ECG changes with respect to age and sex in a large primary population. Methods: From digitized ECG stored from 2008 to 2021 in the Modena province, 130,471 patients were enrolled. Heart rate, P, QRS and T wave axis, P, QRS and T wave duration, PR interval, QTc, and frontal QRS-T angle were evaluated. Results: All ECG parameters showed a dependence on age, but only some of them with a straight-line correlation: QRS axis (p < 0.001, R2 = 0.991, r = 0.996), PR interval (p < 0.001, R2 = 0.978, r = 0.989), QTc (p < 0.001, R2 = 0.935, r = 0.967), and, in over 51.5 years old, QRS-T angle (p < 0.001, R2 = 0.979, r = 0.956). Differences between females and males and in different clinical settings were observed. Conclusions: ECG changes with ageing are explainable by intrinsic modifications of the heart and thorax and with the appearance of cardiovascular diseases and comorbidities. Age-related reference values were computed and applicable in clinical practice. Significant deviations from mean values and from Z-scores should be investigated
Re-active Passive (RAP) Devices for Control of Noise Transmission through a Panel
Re-Active Passive (RAP) devices have been developed to control low frequency (200 Hz), reactive distributed vibration absorber) to cover the medium frequency range (75 to 250 Hz), and active control for controlling low frequencies (<200 Hz). The device was applied to control noise transmission through a panel mounted in a transmission loss test facility. Experimental results are presented for the bare panel, and combinations of passive treatment, reactive treatment, and active control. Results indicate that three RAP devices were able to increase the overall broadband (15-1000 Hz) transmission loss by 9.4 dB. These three devices added a total of 285 grams to the panel mass of 6.0 kg, or approximately 5%, not including control electronics
characterization and antimicrobial resistance analysis of avian pathogenic escherichia coli isolated from italian turkey flocks
ABSTRACT This study investigated the occurrence of avian pathogenic Escherichia coli (APEC) in a finishing turkey commercial farm, carrying out longitudinal surveys involving 3 consecutive flocks. The diversity and the distribution of the E. coli strains detected during colisepticemia outbreaks were examined. The strains were isolated, serogrouped, assessed for the presence of virulence-associated genes, typed by random amplification of polymorphic DNA (RAPD), and antimicrobial resistance analysis was then carried out. Escherichia coli O78 and O2 were predominantly found. Moreover, based on the somatic antigens used in the study, strains were recovered that were nontypeable. On one occasion, an E. coli O111 strain was found in turkeys. The E. coli isolates differed in terms of antibiotic resistance and RAPD profile. All strains possessed the virulence genes that enabled them to be considered APEC. Strains not only differed between flocks, but also within the same flock. These findings point out the importance of addressing colibacillosis therapy on the basis of a sensitivity test
Surface behaviour of the pairing gap in a slab of nuclear matter
The surface behaviour of the pairing gap previously studied for semi-infinite
nuclear matter is analyzed in the slab geometry. The gap-shape function is
calculated in two cases: (a) pairing with the Gogny force in a hard-wall
potential and (b) pairing with the separable Paris interaction in a Saxon-Woods
mean-field potential. It is shown that the surface features are preserved in
the case of slab geometry, being almost independent of the width of the slab.
It is also demonstrated that the surface enhancement is strengthened as the
absolute value of chemical potential decreases which simulates the
approach to the nucleon drip line.Comment: 12 pages, 2 figure
Avian Pathogenic Escherichia coli in Audouin gulls (Larus audouinii) Could they affect the surviving of the bird colonies
A total of 39 E. coli strains isolated from cloacal swabs and unhatched eggs of Audouin's gulls (Larus audouinii) living the Salento coast (Italy) were serotyped and molecular characterized for the presence of irp2, fyuA, tsh, papC, fimC, iucD, and eae genes described for Avian Pathogenic E. coli (APEC). Eight different serogroups (O1, 06, 08, 015, 075, 0139, 0146, 0147) were distinguished: we recorded a very high rate of untypeable strains. Genotyping by PCR achieved to detect fimC and irp2, described for APEC strains, as most predominant genes circulating in the gulls population, accounting for 94.87% and 97.43% respectively. Nevertheless, a significant co-existance of virulence genes was demonstrated to belong to E.coli of eggs origin. Particularly, fimC/tsh/iucD pathotype, recognized as most responsible of illness in poultry, emerged in 8.69% of E. coli of eggs origin
Improvement of wear and corrosion resistance of ferrous alloys by post-nitrocarburizing treatments
Improvement of wear and corrosion resistanceof ferrous alloys bypost-nitrocarburizing treatmentsR. Sola, R. Giovanardi, P. Veronesi, G. Pol
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