Background: Lactoperoxidase (LPO) is one of the most heat-stable enzymes in milk and its inactivation has been proposed for monitoring thermal processes. The aim of this study was to provide information on activity and thermal inactivation behavior of LPO in Iranian cow and buffalo milk and whey. Methods: Sixty cow and buffalo milk samples were collected. The LPO activity was measured using ...

Silver-particle-incorporated polyurethane films were evaluated for antimicrobial activity towards two different bacteria: Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). Distributed silver particles sourced from silver nitrate, silver lactate and preformed silver nanoparticles were mixed with polyurethane (PU) and variously characterized by field emission scanning electron mic...

The Tennoskan instrument on board the Phobos '88 spacecraft acquired the highest spatial resolution thermal infrared emission data ever obtained for Mars. Included in the thermal images are 2 km/pixel, midday observations of several major channel and valley systems including significant portions of Shalbatana, Ravi, A1-Qahira, and Ma'adim Valles, the channel connecting Vailes Marineris with Hyd...

An analysis of the channel thermal noise in MOSFET's, based on the one-dimensional charge sheet model, is presented. The analytical expression is valid in the strong, moderate, and weak inversion regions. The body effect on the device parameters relevant to the thermal noise is discussed. A measurement technique as well as experimental results of Pand N-MOSFET's of a 1.2 μm radiation hard CMOS ...

Para-chlorobenzonitrile (p-CBN) is widely used as a chemical intermediate in the manufacturing of dyes, medicines, and pesticides, however; sometimes it may cause runaway reactions at high temperatures. The current study was designed to evaluate the impact of biofield energy treatment on the physical, thermal, and spectroscopic properties of p-CBN. The analysis was done by dividing the p-CBN sa...

Differential thermal analysis (DTA) and dielectric measurements have been performed on 2,2-dimethyl-l-propanol (neopentanol) up to 200 MPa. Neopentanol exhibits at least one orientationally disordered (ODIC) phase (solid I) that transforms at lower temperatures to a non-plastic phase (solid II). There is evidence of a further O D I C phase denoted as solid I'. The pressure dependence of the pha...

The kinetics of thermal denaturation of a biliprotein, C-phycocyanin (C-PC) isolated from Spirulina platensis were studied at different pH values, ranging from 4.0 to 8.0. The denaturation of C-PC follows the first order kinetics and rate constant at pH 5.0 and temperature 55 degrees C is found to be 4.37 x 10(-5) s(-1), which increases to 5.46 x 10(-1) s(-1) at pH 7.0. The denaturation rate is...

Stefano Lepri, 2, 3, ∗ Roberto Livi, 3 and Antonio Politi 2, 3 Istituto Nazionale di Ottica Applicata, largo E. Fermi 6 I-50125 Firenze, Italy Istituto dei Sistemi Complessi, Consiglio Nazionale delle Ricerche, Sez. Territoriale di Firenze, largo E. Fermi 6 I-50125 Firenze, Italy Istituto Nazionale per la Fisica della Materia-UdR Firenze, via G. Sansone 1 I-50019 Sesto Fiorentino, Italy Diparti...