Thermogravimetric analysis and kinetic modeling of the pyrolysis of different biomass types by means of model-fitting, model-free and network modeling approaches.

This work aims at comparing the ability of 7 modeling approaches to simulate the pyrolysis kinetics of spruce wood, wheat straw, swine manure, miscanthus and switchgrass. Measurements were taken using a thermogravimetric analyzer (TGA) with 4 heating rates comprised between 5 and 30 K min. The obtained results were processed using 3 isoconversional methods (Kissinger-Akahira-Sunose (KAS), Ozawa-Flynn-Wall (OFW) and Friedman), 1-step and 3-step Kissinger models, as well as an advanced fitting method recently proposed by Bondarchuk et al.

Pancreatic cancer liver metastasis mimicking focal nodular hyperplasia. A case report.

Metastases to the liver from gastroenteropancreatic neuroendocrine tumors are varied in their presentation and echogenicity on ultrasound. We present a case of adenocarcinoma of the pancreas with sporadic neuroendocrine differentiation and metastasis to the liver, referred for inclusion in a clinical study. Standard ultrasound showed two hypoechoic focal liver lesions.

The Role of Luminescent Coupling in Monolithic Perovskite/Silicon Tandem Solar Cells.

Luminescent coupling (LC) is a key phenomenon in monolithic tandem solar cells. This study presents a nondestructive technique to quantitatively evaluate the LC effect, addressing a gap in the existing predictions made by optical modeling. The method involves measuring the ratio of photons emitted from the high bandgap top cell that escape through the rear, contributing additional current to the bottom cell, and to those escaping from the front side of top cell.