1,126 research outputs found
APPLICAZIONE DI PROCESSI BIOLOGICI PER IL RECUPERO DI ENERGIA E DI MATERIA DA RIFIUTI AGRO-INDUSTRIALI E ZOOTECNICI
No full textOggetto di studio della presente tesi di dottorato è stato il processo di digestione anaerobica ad umido di reflui zootecnici e FORSU, trattati da soli o in codigestione, in reattori tipo batch o alimentati in semi-continuo, ed il loro accoppiamento con una cella a combustibile a carbonati fusi. In particolare sono stati studiati gli effetti di alcuni parametri operativi come la temperatura, il ph iniziale o controllato durante l'acidogenesi, il contenuto in solidi, il carico organico ed il tempo di ritenzione idraulica sulla qualità e quantità di biogas prodotta. Particolare attenzione è stata data allo sviluppo di VFA ed alla produzione di idrogeno, metano ed idrogeno solforato al variare delle condizioni adottate. Infine, è stato fatto un bilancio energetico di massima sui migliori casi ottenuti per valutare la convenienza del processo di digestione anaerobica di reflui zootecnici e FORSU in semicontinuo a singolo stadio o in doppio stadioMinistero dello Sviluppo Economico; Ministero delle Politiche Agricole Alimentari e Forestal
Biofuels as opportunity for MCFC niche market application
No full textThe aim of the study is to compare three different cogeneration systems, internal combustion engine, gas turbine and molten carbonate fuel cell (MCFC), combined with an anaerobic digester plant implementing a technical–economical analysis and a multicriteria analysis. Through the analysis it is possible to show the validity of integrating a MCFC in combined heat and power configuration with anaerobic digester gas, a renewable source of energy, by-product of the treatment of wastewater, animal manure and organic solid waste. Even if fuel cell systems diffusion is still limited by high manufacturing costs, about 4500 h/kW, and is in need of reliable technology, the possibility of integrating renewable fuels, like biogas, with MCFCs can be a good niche market for fuel cell power plants and could promote their large-scale commercialisation. Through the analysis it is possible to show that with a cost of 3000 h/kW the MCFC is already competitive with other cogeneration systems
Fig. 1 in Study of some European wild hybrids of Erica L. (Ericaceae), with descriptions of a new nothospecies: Erica nelsonii Fagúndez and a new nothosubspecies: Erica veitchii nothosubsp. asturica Fagúndez
No full textFig. 1. – Erica ×nelsonii Fagúndez. A. Synflorescence of upper left fragment (typus); B. General view of upper right fragment. [P. F. Hunt 1636, K] [Drawn by the author]Published as part of Fagúndez, Jaime, 2012, Study of some European wild hybrids of Erica L. (Ericaceae), with descriptions of a new nothospecies: Erica nelsonii Fagúndez and a new nothosubspecies: Erica veitchii nothosubsp. asturica Fagúndez, pp. 51-57 in Candollea 67 (1) on page 53, DOI: 10.15553/c2012v671a7, http://zenodo.org/record/576238
Anaerobic codigestion of swine slurry and organic fraction of municipal solid waste: effects on hydrogen and methane production
No full textPapillary thyroid cancer: Pathological parameters as prognostic factors in different classes of age
No full textOBJECTIVE: To analyze aspects of a series of papillary thyroid carcinomas and evaluate the prognostic features specific to different age classes. STUDY DESIGN: Retrospective study. SUBJECTS AND METHODS: From 2000 to 2005, 2709 patients underwent a total thyroidectomy for papillary thyroid carcinoma in our department. Patients were divided into three groups: 46 years (G3). Histologic and clinical features were statistically evaluated. RESULTS: Tumor size was larger in G1 when compared with both G2 and G3 (P < 0.0001). Infiltration of the thyroid capsule and node metastases were higher in G1 than both G2 and G3 (P < 0.0001). The Tall-cell variant was more represented in G2 and G3. CONCLUSION: In the pediatric population, papillary carcinoma is a more aggressive disease. Because pediatric cancers have a better prognosis than their adult counterparts, this does not influence patient outcome. Age can then be considered the most important factor in determining prognosis. (C) 2008 American Academy of Otolaryngology-Head and Neck Surgery Foundation. All rights reserved
Rand, Erica - 2022 Follow Up
No full textErica Rand is a professor of Arts and Visual Culture at Bates College, an adult figure skater, author and activist. This is a follow-up interview to her previous interview for Querying the Past in 2017. Erica Rand was heavily involved with ACT- UP Portland and more specifically the branch of ACT UP called: Pissed Off Dyke Cell and Women’s Health Action Crew. But more recently she has been involved with a new form of activism through sports and writing. At Bates, she is pushing the importance of trans-inclusion policies in sports and even testing the gender limitations put in place in figure skating.https://digitalcommons.usm.maine.edu/querying_ohproject/1095/thumbnail.jp
Intrathyroidal differentiated thyroid carcinoma: Tumor size-based surgical concepts
No full textIntroduction: Total thyroidectomy (TT) remains the treatment of choice for differentiated thyroid carcinomas (DTCs), but a limited approach can be proposed when tumors are at an early stage and limited to a single lobe. The aim of this study was to analyze the pathologic and clinical aspects of a retrospective series of DTCs in an attempt to determine whether these features might prove useful for limiting the surgical strategy in selected cases. Methods: From 2000 to 2005, a total of 2798 patients (637 males, 2161 females; mean age 44.6 years) underwent TT for papillary thyroid carcinoma in our department. The histologic features considered were size, histologic subtype and capsule of the tumor, its multifocality/bilaterality, infiltration of the thyroid capsule, and the presence of nodal metastases. Results: Statistical analysis revealed that among tumors <= 1 cm the presence of the tumor capsule, infiltration of the thyroid capsule, bilaterality, and the presence of node metastases were all significantly lower when the tumor size was <= 0.5 cm (p < 0.0001). Furthermore, patients with bilateral carcinomas demonstrated a significantly higher presence of a tumor capsule (p = 0.012), infiltration of the thyroid capsule (p < 0.0001), and node metastases (p < 0.0001) and a higher incidence of the "tall-cells" variant (p < 0.0001) when compared to the unilateral population. Conclusions: Based on these data it is suggested that tumors <= 1 cm cannot be considered a homogeneous class of DTCs. Nevertheless, in tumors <= 0.5 cm the absence of a "tall-cells" variant and the absence of infiltration of the thyroid capsule might be useful for avoiding an unnecessary completion thyroidectomy after lobectomy
Veterinary science : humans, animals and health
No full textThis living book is a collection of open access materials bringing scientific papers to a humanities audienc
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