Effect of Temperature Increasing the temperature increases the
... • Proteins take on the 3-D structure with lowest potential energy - increases their stability • Increased energy causes increased motion within the molecule as well as between molecules • Weak bonds in the tertiary structure (hydrogen bonds) are broken and new bonds form in different positions • New ...
... • Proteins take on the 3-D structure with lowest potential energy - increases their stability • Increased energy causes increased motion within the molecule as well as between molecules • Weak bonds in the tertiary structure (hydrogen bonds) are broken and new bonds form in different positions • New ...
Reaction of Hydrogen-Desorbed Si(100) Surfaces with Water during
... cooling and the second heating stage is much lower than that during the first heating stage, as shown in Fig. 3(c). In the second heating stage, a hydrogen peak is not observed at about 400 C and the hydrogen peak height at about 510 C is lower than that during simple heating. The hydrogen peak hei ...
... cooling and the second heating stage is much lower than that during the first heating stage, as shown in Fig. 3(c). In the second heating stage, a hydrogen peak is not observed at about 400 C and the hydrogen peak height at about 510 C is lower than that during simple heating. The hydrogen peak hei ...
Thermoelectric Properties and Site-Selective Rb /K Distribution in
... that are arranged side by side to form layers perpendicular to the c-axis while infinite rods of the NaCl100type connect the layers to build a 3-D framework; see Figure 4. The tunnels between the rods are filled with alkali metal cations. The connecting points between the two different types of bloc ...
... that are arranged side by side to form layers perpendicular to the c-axis while infinite rods of the NaCl100type connect the layers to build a 3-D framework; see Figure 4. The tunnels between the rods are filled with alkali metal cations. The connecting points between the two different types of bloc ...
pH meters and their electrodes: calibration, maintenance and use
... hydrogen ion concentration on enzyme activity and coined the term ‘pH’. Although that same year saw the first systematic study of the glass electrode, it was not until the development of convenient electronic techniques capable of accommodating the high electrical resistance of the glass electrode t ...
... hydrogen ion concentration on enzyme activity and coined the term ‘pH’. Although that same year saw the first systematic study of the glass electrode, it was not until the development of convenient electronic techniques capable of accommodating the high electrical resistance of the glass electrode t ...
Direct Growth of Highly Oriented Arrays of Crystalline Rutile SnO2
... substrates at mild temperatures1. The goal is to design at low-cost a new generation of functional purpose-built metal oxide materials at nano-, meso- and micro-scale with controlled particle size, morphology and orientation (fig.1). Such well-designed materials should lead to a better fundamental u ...
... substrates at mild temperatures1. The goal is to design at low-cost a new generation of functional purpose-built metal oxide materials at nano-, meso- and micro-scale with controlled particle size, morphology and orientation (fig.1). Such well-designed materials should lead to a better fundamental u ...
Femtosecond X-ray measurement of coherent lattice vibrations near
... Correspondence and requests for materials should be addressed to K.S.-T. (e-mail: kst@ilp.physik.uni-essen.de). ...
... Correspondence and requests for materials should be addressed to K.S.-T. (e-mail: kst@ilp.physik.uni-essen.de). ...
Here
... Panarchy: A New Vision of Entropy? Holling’s (2001) article provides a mechanism for the workings of ecological, economic, and even social systems. This mechanism is called panarchy and “combines the concept of space/time hierarchies with a concept of adaptive cycles” (392). An adaptive cycle has th ...
... Panarchy: A New Vision of Entropy? Holling’s (2001) article provides a mechanism for the workings of ecological, economic, and even social systems. This mechanism is called panarchy and “combines the concept of space/time hierarchies with a concept of adaptive cycles” (392). An adaptive cycle has th ...
Differential scanning calorimetry as tool in observing thermal and
... aluminium pans was pierced just before analysis, allowing desorbed water to leave the pan. The powdered recombinant and commercial bromelain were heated from 29°C to 150°C at heating rate of 10ºC min-1. ...
... aluminium pans was pierced just before analysis, allowing desorbed water to leave the pan. The powdered recombinant and commercial bromelain were heated from 29°C to 150°C at heating rate of 10ºC min-1. ...
High temperature measurement and characterisation of
... This technique measures the expansion (or contraction) resulting from the application of an electric field to the piezoelectric material. This lends itself to assessment of the actuating capabilities of a material at high electric field, but values for piezoelectric coefficient in the low field limi ...
... This technique measures the expansion (or contraction) resulting from the application of an electric field to the piezoelectric material. This lends itself to assessment of the actuating capabilities of a material at high electric field, but values for piezoelectric coefficient in the low field limi ...
![[HMIM][Br9]: a Room-temperature Ionic Liquid Based on a](http://s1.studyres.com/store/data/016911324_1-ac5688316a1e3a6c1ba364df016e5832-300x300.png)
[HMIM][Br9]: a Room-temperature Ionic Liquid Based on a
... In recent years polyhalogen chemistry has again attracted the attention of the chemical community. Several fundamental new polyhalides have been prepared and characterized. Among these, the polybromide anions have shown the largest variety. Especially our knowledge about dianions was vastly expanded ...
... In recent years polyhalogen chemistry has again attracted the attention of the chemical community. Several fundamental new polyhalides have been prepared and characterized. Among these, the polybromide anions have shown the largest variety. Especially our knowledge about dianions was vastly expanded ...
Re-evaluating the Cu K pre-edge XAS transition in
... Ar ¼ 2,6-Me2-C6H3; ArF ¼ 3,5-(CF3)2-C6H3) have been studied by Cu K-edge X-ray absorption spectroscopy, as well as single- and multi-reference computational methods (DFT, TD-DFT, CASSCF, MRCI, and OVB). The study was extended to a range of both known and theoretical compounds bearing 2p-element dono ...
... Ar ¼ 2,6-Me2-C6H3; ArF ¼ 3,5-(CF3)2-C6H3) have been studied by Cu K-edge X-ray absorption spectroscopy, as well as single- and multi-reference computational methods (DFT, TD-DFT, CASSCF, MRCI, and OVB). The study was extended to a range of both known and theoretical compounds bearing 2p-element dono ...
Including the effects of pressure and stress in thermodynamic functions
... tions. The lattice vibrational energy is considered based on the quasi-harmonic approximation and the Debye model for which the Debye temperature is determined by an equation of state (EoS) at a reference temperature (0 K or room temperature) and the Grüneisen model. This method can avoid abnormal ...
... tions. The lattice vibrational energy is considered based on the quasi-harmonic approximation and the Debye model for which the Debye temperature is determined by an equation of state (EoS) at a reference temperature (0 K or room temperature) and the Grüneisen model. This method can avoid abnormal ...
The Second Law - chem.uwec.edu
... To calculate entropy changes associated with complex biological processes, we must first learn how to cope with simple physical changes, such as heating. We can often rely on intuition to judge whether the entropy increases or decreases when a substance undergoes a physical change. For instance, the ...
... To calculate entropy changes associated with complex biological processes, we must first learn how to cope with simple physical changes, such as heating. We can often rely on intuition to judge whether the entropy increases or decreases when a substance undergoes a physical change. For instance, the ...
Denaturation of hemoglobin in the presence of tannic acid
... and is found in numerous plants and foods. It generally can be extracted from grape seeds. TA is known as an effective antioxidant, antimicrobial/antiviral agent, which binds to blood proteins [5–8]. The binding of a ligand to HSA and HHb can stabilize or destabilize the protein structure. Fluoresce ...
... and is found in numerous plants and foods. It generally can be extracted from grape seeds. TA is known as an effective antioxidant, antimicrobial/antiviral agent, which binds to blood proteins [5–8]. The binding of a ligand to HSA and HHb can stabilize or destabilize the protein structure. Fluoresce ...
Thermal and Mechanical Characterizations of W-armoured
... original Hall-Petch relation, the grain diameter in the non-recrystallized area is estimated at 8 µm whereas the average experimental one is equal to 30 µm. The discrepancy may be explained by the overestimation of the grain diameter measurement technique, and/or the effect of the manufacturing proc ...
... original Hall-Petch relation, the grain diameter in the non-recrystallized area is estimated at 8 µm whereas the average experimental one is equal to 30 µm. The discrepancy may be explained by the overestimation of the grain diameter measurement technique, and/or the effect of the manufacturing proc ...
Glass transition
The glass–liquid transition or glass transition for short is the reversible transition in amorphous materials (or in amorphous regions within semicrystalline materials) from a hard and relatively brittle state into a molten or rubber-like state. An amorphous solid that exhibits a glass transition is called a glass. Supercooling a viscous liquid into the glass state is called vitrification, from the Latin vitreum, ""glass"" via French vitrifier.Despite the massive change in the physical properties of a material through its glass transition, the transition is not itself a phase transition of any kind; rather it is a laboratory phenomenon extending over a range of temperature and defined by one of several conventions. Such conventions include a constant cooling rate (20 K/min) and a viscosity threshold of 1012 Pa·s, among others. Upon cooling or heating through this glass-transition range, the material also exhibits a smooth step in the thermal-expansion coefficient and in the specific heat, with the location of these effects again being dependent on the history of the material. However, the question of whether some phase transition underlies the glass transition is a matter of continuing research.The glass-transition temperature Tg is always lower than the melting temperature, Tm, of the crystalline state of the material, if one exists.