Search results for "ToF"

Konformikuvauksista

2016

Tarkastelen työssä konformikuvauksia, sekä niihin liittyviä tärkeitä tuloksia. Esitän Riemannin kuvauslauseen todistuksen sekä todistan Schwarzin ja Christoffelin kaavan, joka karakterisoi konformikuvaukset puolitasolta monikulmiolle. Lisäksi tarkastelen työssä konformikuvausten soveltamista muutamiin fysiikan ongelmiin virtausmekaniikan, termodynamiikan ja sähköstatiikan aloilla. In the thesis I study conformal mappings and some important results related to them. I introduce a proof for Riemann mapping theorem and prove the Schwarz-Christoffel formula, which characterizes the conformal mappings from the half plane to a polygon. In addition, I study applying the conformal mappings to some p…

Quantitative Multispectral Imaging Differentiates Melanoma from Seborrheic Keratosis.

2021

Melanoma is a melanocytic tumor that is responsible for the most skin cancer-related deaths. By contrast, seborrheic keratosis (SK) is a very common benign lesion with a clinical picture that may resemble melanoma. We used a multispectral imaging device to distinguish these two entities, with the use of autofluorescence imaging with 405 nm and diffuse reflectance imaging with 525 and 660 narrow-band LED illumination. We analyzed intensity descriptors of the acquired images. These included ratios of intensity values of different channels, standard deviation and minimum/maximum values of intensity of the lesions. The pattern of the lesions was also assessed with the use of particle analysis. …

Differentiation of seborrheic keratosis from basal cell carcinoma, nevi and melanoma by RGB autofluorescence imaging

2018

A clinical trial on the autofluorescence imaging of skin lesions comprising 16 dermatologically confirmed pigmented nevi, 15 seborrheic keratosis, 2 dysplastic nevi, histologically confirmed 17 basal cell carcinomas and 1 melanoma was performed. The autofluorescence spatial properties of the skin lesions were acquired by smartphone RGB camera under 405 nm LED excitation. The diagnostic criterion is based on the calculation of the mean autofluorescence intensity of the examined lesion in the spectral range of 515 nm–700 nm. The proposed methodology is able to differentiate seborrheic keratosis from basal cell carcinoma, pigmented nevi and melanoma. The sensitivity and specificity of the prop…

A method for skin malformation classification by combining multispectral and skin autofluorescence imaging

2018

As the incidence of skin cancer is still increasing worldwide, there is a high demand for early, non-invasive and inexpensive skin lesion diagnostics. In this article we describe and combine two skin imaging methods: skin autofluorescence (AF) and multispectral criterion p’. To develop this method, we used custom made prototype with 405 nm, 526 nm, 663 nm and 964 nm LED illuminations, perpendicular positioned linear polarizers, 515 nm filter and IDS camera. Our aim is to develop a skin lesion diagnostic device for primary care physicians who do not have experience in dermatology or skin oncology. In this study we included such common benign lesion groups as seborrheic keratosis, hyperkerato…

Influence of cheese composition on the aroma content, release and perception

2022

Aspetti generali del commercio agro-alimentare dell'Italia con i partner mediterranei

2008

La politica agricola euro-mediterranea: implicazioni per alcune produzioni agricole italiane

2009

I riflessi della creazione della zona di libero scambio euro-mediterraneo sul sistema ortofrutticolo nazionale

2008

Il Controllo biologico degli insetti fitofagi degli agrumi

2009

Efficacia delle reti protettive, del rotenone e dello spinosad nel controllo di Ceratitis capitata (Wiedemann) su pesco biologico

2009

In the organic farming the control of Ceratitis capitata (Wiedemann) is problematic for late ripening peach cultivars. In 2007 and 2008 we tested a protective net, rotenone and spinosad in a biodynamic peach orchard in Castrofilippo (AG). Traps baited with Trimedlure were placed in July and observed weekly. In 2007 there were 3 plots: rotenone, net cover and untreated. In 2008 a thesis with spinosad was added. Since the beginning of August four rotenone and spinosad treatments were done weekly. The net plot was covered since the end of July. At the commercial harvesting sampling on peaches were done collecting and analysing 50 peaches for each thesis, recording infested fruits. First male c…