Economical comparison of CHP systems for industrial user with large steam demand

In this paper cogeneration benefits applied to a user with a high steam demand are analyzed. The methodology for the feasibility study and the economical analysis of the investment is presented under the Italian legislative framework. The methodology is applied to an actual case and a detailed description and discussion of all data input is provided. Especially this last key point will be faced using starting data usually available in these kind of studies (i.e., not very detailed for thermal consumption). Finally a comparison of different CHP technologies and a sensitivity analysis is done

Use of weaning concentrate in the feeding suckling kids: effects on meat quality

The effect of a feeding supplementation with starter concentrate on “Capretto” meat production and its qualitative characteristics was investigated. The results showed that the effect of concentrate supplementation did not influence the slaughter weight, slaughter and dissection data, tissue composition and meat chemical composition of the pelvic limb. No differences were found for rheological characteristics of LD meat, except cohesiveness values, which were higher in the concentrate group kids

Squamous Cell Carcinoma and Ledderhose Disease: A Case Report

Ledderhose disease is disorder of the plantar aponeurosis. This disease is not so common and can be tackled with a surgical or conservative approach. A case of a 73-year-old man came to our attention who had a 26-year history of painless bilateral plantar nodules coalescing into an indurated mass. An ulcerative nodule had been noted in the last 16 months on the right foot, in the absence of trauma, not responsive to conservative treatment, so we decided to perform a biopsy. The histopatologic examination showed squamous cell carcinoma, with warty, well-differentiated, low-grade malignancy. Surgical treatment was suggested, so, in pneumoischemia, we made a surgical incision including the skin lesion. Then we proceeded to sculpture the anterolateral thigh fasciacutaneous flap to obtain adequate soft tissue coverage. The tumor was completely removed. Current reconstructive possibilities comprise a good anatomofunctional recovery even in the case of large demolition requests for the therapy of advanced cases of the disease described in this article. Correlation between Ledderhose disease and the formation of malignant tumors has not been made as yet, but perhaps an element that could unite these pathologies can be researched in the lively cell proliferation that characterizes both. It would be interesting to analyze the biological substrate, as well as the systemic and local levels, in patients where both diseases are manifested

High-performance magnetic shielding solution for extremely low frequency (ELF) sources

Some particular aspects related to open shields with high performance are presented. The magnetic flux density targets related to the protection of sensitive devices are quite low, <0.2 µT. The problem to reach high magnetic field attenuation is more complicated by the fact that open shields have to be adopted instead of closed solutions. After some general considerations about open shields two practical examples are presented and discussed

RELAZIONE TRA HANDGRIP E FAMILIARITÀ AL DIABETE DI TIPO 2: UNO STUDIO PILOTA/ RELATIONSHIP BETWEEN TYPE 2 DIABETES AND HANDGRIP: RESULTS OF A PILOT STUDY

Obiettivo: È stata analizzata la possibile relazione, su un campione della popolazione siciliana, tra il grado di familiarità al diabete di tipo 2, i parametri antropometrici ed alcuni test di forza specifica. Materiali e metodi: In modalità random sono stati selezionati 88 uomini e 27 donne, distinti in FH- (assenza di familiarità per il diabete di tipo 2), FH+ (con un componente in linea indiretta con la malattia) ed FH++ (con un genitore affetto dalla malattia). Sono stati rilevati i parametri antropometrici, i parametri cardiovascolari ed è stato rilevato l’handgrip ad entrambe le mani. Le differenze tra i gruppi sono state analizzate con il test ANOVA ed attraverso correlazioni parametriche abbiamo verificato eventuali associazioni (Pearson). Risultati: È emerso che uomini e donne FH++ tendono ad avere un significativo incremento dell’indice di massa corporea (p<0,05) associato ad un incremento statisticamente significativo dei valori basali di pressione arteriosa diastolica (p<0,05). Non sono emerse differenze statisticamente significative tra i gruppi (FH- vs FH+ vs FH++) relativamente ai valori di handgrip espressi dalla mano destra e sinistra, in valore assoluto e relativo. Dallo studio delle correlazioni emerge una importante influenza del peso corporeo sul rendimento dei soggetti al test dell’handgrip (>.40). Conclusioni: La familiarità diretta al diabete di tipo 2 si correla con degli incrementi statisticamente significativi del peso corporeo e dei valori pressori cardiovascolari, indicando che questa popolazione risulta essere maggiormente a rischio per l’evoluzione della stessa malattia. Progetti di prevenzione sono auspicabili in tal senso. L’handgrip risulta essere fortemente correlato ai parametri antropometrici, pertanto indirettamente anche con la familiarità alla malattia. Un’estensione dello studio è auspicabile, al fine di poter meglio comprendere i fenomeni.Objectives: the purpose of this study was to analyze the relationship between family history to type 2 diabetes, anthropometrics characteristics and some fitness tests. Materials and methods: we randomly selected 88 men and 27 women, distinguishing on FH- (absence of family history to type 2 diabetes), on FH+ (with a familiar component with disease) and FH++ (with parent affected to diabetes). We recorded anthropometric parameters, basal blood pressure values and handgrip of both hands. The differences between the groups were analyzed with ANOVA test and Pearson’s correlation. Results: participants FH++ of both sexes showed a statistically significant increase of body mass index (p<0,05) and a significant increase of basal diastolic blood pressure (p<0,05). No family history-related differences were found on handgrip results in absolute and relative values, but the lower numbers of subgroups might have affected the statistical analysis. Correlation analysis showed that parameters like body weight, body mass index and body surface area are able to influence the handgrip test of both hands. Conclusion: family history to type 2 diabetes is strongly related to body weight and basal blood pressure values, confirming that FH++ participants have a major risk to develop disease compared to FH- participants. Handgrip test is strongly related to anthropometric parameters. The sample size represents the major limit of the study. More data are needed to confirm the association between variables

Hypertension and hand-foot skin reactions related to VEGFR2 genotype and improved clinical outcome following bevacizumab and sorafenib

BACKGROUND: Hypertension (HT) and hand-foot skin reactions (HFSR) may be related to the activity of bevacizumab and sorafenib. We hypothesized that these toxicities would correspond to favorable outcome in these drugs, that HT and HFSR would coincide, and that VEGFR2 genotypic variation would be related to toxicity and clinical outcomes. METHODS: Toxicities (≥ grade 2 HT or HFSR), progression-free survival (PFS), and overall survival (OS) following treatment initiation were evaluated. Toxicity incidence and VEGFR2 H472Q and V297I status were compared to clinical outcomes. RESULTS: Individuals experiencing HT had longer PFS following bevacizumab therapy than those without this toxicity in trials utilizing bevacizumab in patients with prostate cancer (31.5 vs 14.9 months, n = 60, P = 0.0009), and bevacizumab and sorafenib in patients with solid tumors (11.9 vs. 3.7 months, n = 27, P = 0.052). HT was also linked to a > 5-fold OS benefit after sorafenib and bevacizumab cotherapy (5.7 versus 29.0 months, P = 0.0068). HFSR was a marker for prolonged PFS during sorafenib therapy (6.1 versus 3.7 months respectively, n = 113, P = 0.0003). HT was a risk factor for HFSR in patients treated with bevacizumab and/or sorafenib (OR(95%CI) = 3.2(1.5-6.8), P = 0.0024). Carriers of variant alleles at VEGFR2 H472Q experienced greater risk of developing HT (OR(95%CI) = 2.3(1.2 - 4.6), n = 170, P = 0.0154) and HFSR (OR(95%CI) = 2.7(1.3 - 5.6), n = 170, P = 0.0136). CONCLUSIONS: This study suggests that HT and HFSR may be markers for favorable clinical outcome, HT development may be a marker for HFSR, and VEGFR2 alleles may be related to the development of toxicities during therapy with bevacizumab and/or sorafenib

A proposal for performance evaluation of low frequency shielding efficiency

The present work aims to propose a methodology for evaluating the performance of low-frequency magnetic shields used for the shielding of complex sources such as MV/LV substations. Today there is no standard procedure for testing shields based on the use of a single-coil for generating artificial MF (MF: Magnetic Field) as is the case for high-frequency anechoic chambers. In the case of shielding for industrial frequency sources, these are generally open shields with sources of various types: 3D transformers, switch-gear, and power lines. These kinds of sources and shields are better checked if the artificial MF has all three components in space. The work proposes a methodology based on the use of a tri-axial source, capable of generating a rotating magnetic field. The supports of the coils are made using a 3D printing process. The paper presents the design steps, the analytical evaluation of the performance of the source and as an application a test of a magnetic shielding plate was presented