Differential scanning calorimetry (DSC) analysis of isolated liver and heart mitochondria

Biologija ◽  
2008 ◽  
Vol 54 (3) ◽  
pp. 167-170 ◽  
Author(s):  
Laima Degutytė-Fomins ◽  
Rasa Žūkienė ◽  
Žaneta Maijorovaitė ◽  
Zita Naučienė ◽  
Vida Mildažienė
Keyword(s):  
Differential Scanning Calorimetry ◽  
Heart Mitochondria ◽  
Dsc Analysis ◽  
Scanning Calorimetry ◽  
Isolated Liver

Differential scanning calorimetry (DSC) analysis of human plasma in different psoriasis stages

2012 ◽  
Vol 111 (3) ◽  
pp. 1801-1804 ◽  
Author(s):  
Moezzi Mehdi ◽  
Tamás Fekecs ◽  
István Zapf ◽  
Andrea Ferencz ◽  
Dénes Lőrinczy
Keyword(s):  
Differential Scanning Calorimetry ◽  
Human Plasma ◽  
Dsc Analysis ◽  
Scanning Calorimetry

Non-Isothermal Crystallization and Viscoelastic Behavior of Polypropylene/Nanoclay Composites Fabricated from Masterbatch by Using a Mini Extruder

2018 ◽  
Vol 382 ◽  
pp. 89-93
Author(s):  
Achmad Chafidz ◽  
R.M. Faisal ◽  
Mujtahid Kaavessina ◽  
Dhoni Hartanto
Keyword(s):  
Differential Scanning Calorimetry ◽  
Isothermal Crystallization ◽  
Viscoelastic Behavior ◽  
Test Results ◽  
Dsc Analysis ◽  
Scanning Calorimetry ◽  
Frequency Sweep ◽  
Melt Compounding ◽  
Frequency Sweep Test ◽  
Scanning Electron

Polypropylene(PP)/nanoclay composites samples have been fabricated by melt compounding the PP pellets with nanoclay masterbatch (i.e. 50 wt% of nanoclay) using a mini extruder. The effect of three loadings of nanoclay (i.e. 5, 10, and 15 wt%) on the morphology, non-isothermal crystallization, and viscoelastic behavior of the PP/nanoclay composites were investigated. All the nanocomposites samples were characterized by using Scanning Electron Microscope (SEM), Differential Scanning Calorimetry (DSC), and an oscillatory rheometer. The SEM results showed that the distribution of nanoclay in the PP was relatively good at all level of loadings. The DSC analysis results showed that the nanoclay has dramatically enhanced the crystallization temperature, from 117°C (for neat PP) to 127-129°C (for nanocomposites). Additionally, the frequency sweep test results exhibited that the presence of nanoclay increased the viscoelastic behavior of the PP matrix.

Morphology of Lignin-Polyurethane Blends

1989 ◽  
Vol 153 ◽  
Author(s):  
D. Feldman ◽  
M.A. Lacasse
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Differential Scanning Calorimetry ◽  
Sem Analysis ◽  
Accelerated Weathering ◽  
Dsc Analysis ◽  
Mechanical Mixing ◽  
Scanning Calorimetry ◽  
Two Phases ◽  
Scanning Electron

AbstractThe morphology of blended polyurethane (PU) sealants was studied by scanning electron microscopy (SEM) and differential scanning calorimetry (DSC). The PU was modifided by mechanical mixing with various amounts of Lignin (L) to achieve a homogeneous blend. Specimens were subjected to control (C), accelerated weathering (AW), and natural weathering (NW) conditions. Results obtained from SEM analysis reveal an even distribution of L particles in the PU matrix. Furthermore, the SEM photomicrographs clearly emphasize the differing morphologies of the constituent phases. They also depict the differences in surface texture between control and aged specimens. The DSC analysis shows that the two phases are immiscible which is in agreement with observations by microscopy.

The Preparation and Characteristic Research of Keratin Powder Based on TCEP

2014 ◽  
Vol 1053 ◽  
pp. 438-443
Author(s):  
Jian Yong Liu ◽  
Jie Wang ◽  
Hao Ming Li
Keyword(s):  
Differential Scanning Calorimetry ◽  
Fourier Transform ◽  
Moisture Content ◽  
Helical Structure ◽  
Ftir Analysis ◽  
Dsc Analysis ◽  
Scanning Calorimetry ◽  
Β Sheet ◽  
Melting Peak Temperature ◽  
Wool Keratin

In this paper, the wool was pretreated by TCEP (Tris (2-carboxyethyl) phosphine) a certain time, and then prepared wool keratin powder by mechanical lapping. The characteristics of the keratin powder carried out by Fourier transform infrared (FTIR) and Differential scanning calorimetry (DSC). From the FTIR analysis, TCEP first role in α-helical structure of wool, making its decline, and then acting on β-sheet. From the DSC analysis, the melting peak temperature of α-crystalline with the time of TCEP effect on wool, presenting the trend of first increased and then drophave. Dissolved the keratin powder in 88% formic acid, then keratin films were maded.The characteristics of the keratin films were measured, the moisture content of keratin film increases with the time of wool treated with TCEP. And the dissolution rate and ultimate strength in line with the change of FTIR and DSC analysis results.

Interaction of Human-Like Collagen with Copper (II): Effect on Thermal Characteristics

2013 ◽  
Vol 721 ◽  
pp. 625-628
Author(s):  
Yuan Yan Yu
Keyword(s):  
Aqueous Solution ◽  
Differential Scanning Calorimetry ◽  
Copper Complex ◽  
Thermal Characteristics ◽  
Solution Technique ◽  
Dsc Analysis ◽  
Scanning Calorimetry ◽  
Thermo Gravimetric ◽  
Pure Protein

This work describes the aqueous-solution technique preparation and characterization of the complex between human-like collagen and copper (II). Pure human-like collagen and the copper complex were characterized by thermo gravimetric (TG) and differential scanning calorimetry (DSC) analysis. The TG curves and DSC data reveal the significant thermal differences between pure protein and the copper complex, demonstrating the formation of a new chemical compound, which is different from the free HLC and with more stable thermodynamic properties.

Morphology of Lignin-Polyurethane Blends

1989 ◽  
Vol 154 ◽  
Author(s):  
D. FeldMan ◽  
N. A. Lacasse
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Differential Scanning Calorimetry ◽  
Sem Analysis ◽  
Accelerated Weathering ◽  
Dsc Analysis ◽  
Mechanical Mixing ◽  
Scanning Calorimetry ◽  
Two Phases ◽  
Scanning Electron

AbstractThe morphology of blended polyurethane (PU) sealants was studied by scanning electron microscopy (SEM) and differential scanning calorimetry (DSC). The PU was modifided by mechanical mixing with various amounts of Lignin (L) to achieve a homogeneous blend. Specimens were subjected to control (C), accelerated weathering (AW), and natural weathering (NW) conditions. Results obtained from SEM analysis reveal an even distribution of L particles in the PU matrix. Furthermore, the SEM photomicrographs clearly emphasize the differing morphologies of the constituent phases. They also depict the differences in surface texture between control and aged specimens. The DSC analysis shows that the two phases are immiscible which is in agreement with observations by microscopy.

Differential Scanning Calorimetry and Metallographic Analysis of Fe-Si Electrical Steel

2014 ◽  
Vol 782 ◽  
pp. 129-132
Author(s):  
Martin Sopko ◽  
František Kováč ◽  
Ivan Petryshynets ◽  
Mária Molnárová ◽  
Petra Gavendová
Keyword(s):  
Differential Scanning Calorimetry ◽  
Phase Transformation ◽  
Electrical Steel ◽  
Phase Region ◽  
Metallographic Analysis ◽  
Dsc Analysis ◽  
Scanning Calorimetry ◽  
Two Phase ◽  
Si Content ◽  
Grain Boundary Motion

The microstructure development in cold rolled electrical steel under dynamic heat treatments was subjected to investigation. Significantly distinguish types of microstructures were obtained in the investigated steels confirming the different character of grain boundary motion. Application of annealing temperature within two phase region (austenite+ferrite) leads to abnormal grain growth in silicon steels. Moreover, in the optimum temperature range, there was a particular temperature leading to the most optimal microstructure and texture[1]. The effect of Si content on the phase transition temperature of the electrical steel (0.6, 1, 2.5, 2.9 % Si) was studied by using differential scanning calorimetry (DSC) analysis. The result indicated that DSC analysis could be used to detect the shift temperature of phase transformation in the electrical steel with different Si addition. DSC have been used in thermochemical studies and as complementary to the study of phase transformation. It can be used as a compliment to optical and electron microscopy.

scholarly journals Physical-chemical characteristics determination of potato (Solanum phureja Juz. & Bukasov) starch

2017 ◽  
Vol 66 (3) ◽  
pp. 323-330 ◽  
Author(s):  
Julián David Velásquez Herrera ◽  
Juan Carlos Lucas Aguirre ◽  
Victor Dumar Quintero Castaño
Keyword(s):  
Differential Scanning Calorimetry ◽  
Weight Loss ◽  
Potato Starch ◽  
Xrd Analysis ◽  
Solanum Phureja ◽  
Dsc Analysis ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Tga Analysis

The aim of this research was to evaluate the functional properties of the native potato (Solanum phureja Juz. & Bukasov) starch in the food and non-food industry for which a thermal analysis was conducted, including thermogravimetric (TGA) analysis, differential scanning calorimetry (DSC) analysis, X-ray diffraction (XRD) analysis, morphologic analysis via scanning electron microscopy (SEM), and rapid viscoamylograph analysis (RVA). The RVA analysis showed that gelatinization temperature was 63.95 °C, the maximum viscosity was 1087 cP and ease of cooking was 7 min. The thermogravimetric (TGA) analysis revealed three stages: in the first, the product had weight loss of 9.51%; in the second, a weight loss of 53.88%; and in the third, a weight loss of 37.91%. The differential scanning calorimetry (DSC) analysis found that heat flux initiates at 50.97 °C, where the starch gelatinization transition starts, ending at 71.25 °C with enthalpy of 2.11 J.g-1. Evaluation of the native potato starch demonstrated that this product is an excellent alternative in the elaboration of different products which need a thickener in cooking processes, given that its behavior at high temperatures, which have allowed to maintain its structure. 

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