Post-pressure high-resolution transmission electron microscopy analysis shows evidence of nanotube distortions and a 5% contraction in the interlaminar spacing of both NaTNT and NaTNT+K. Topics Phase transitions, Phonons, Diamond anvil cells, Crystal structure, Elasticity, Raman spectroscopy, Transmission electron microscopy, Nanotubes ...
High Pressure has a substantial influence on whey proteins and casein micelles. It denatures casein micelles, α-lactalbumin and β-lactoglobulins. Micelles disrupted below critical pressure (≥200). [Citation 43] However, the influence of high pressure on casein micelles and whey proteins ultimately affects properties and structure of milk whey.
The effect of high pressure treatment (400MPa, 10min at 12°C) on the volatile profile of minced beef and chicken breast, packaged with or without aluminum foil in a multilayer polymeric bag, was investigated. ... Volatile compounds in fresh meats subjected to high pressure processing: Effect of the packaging material Meat Sci. 2009 Feb;81(2 ...
high-pressure phenomena, changes in physical, chemical, and structural characteristics that matter undergoes when subjected to high pressure. Pressure thus serves as a versatile tool in materials research, and it is especially important in the investigation of the rocks and minerals that form the deep interior of the Earth and other planets.. Pressure, defined as a force applied to …
High-pressure chemistry is an interdisciplinary science exploring reactions and phenomena occurring at pressures above 100 kPa. Under these extreme conditions, substances undergo remarkable...
In high-pressure processing (HPP) (also known as high hydrostatic pressure (HHP) processing or ultrahigh-pressure (UHP) processing), foods are subjected to pressures between 100 and >800 MPa for a period of between a millisecond pulse to several minutes. The process temperature during pressure treatment can be specified from below 0°C to above ...
High-pressure processing (HPP) is a non-thermal treatment in which, for microbial inactivation, foods are subjected to isostatic pressures (P) of 400-600 MPa with common holding times (t) from 1.5 to 6 min. The main factors that influence the efficacy (log 10 reduction of vegetative microo …
Download: Download high-res image (269KB) Download: Download full-size image; Fig. 2. Location of internal pressure, p i, and internal radius, r i, at the cavern for both (a) the vertical cross-section and (b) the mid-height horizontal cross-section. Internal pressure and stresses are represented by red arrows.
The application of high pressure during the synthesis of materials has a substantial impact on the properties and yield of materials. These can further make the electron more …
This paper presents the design and testing of a full scale 330-kV, 210-MVA transformer tank to withstand the pressure effects of a 20 MJ, three-cycle low impedance fault in oil, and fail at its ...
Elevated temperature material properties of type 316L stainless steel were newly generated based on a series of material tests to enable the design of pressure boundary components and piping subjected to high-temperature coolant of up to 700 °C, in accordance with the French high-temperature design rules of RCC-MR.
Microorganisms show variable resistance to high pressure according to genus, although as a rule the reduction of microbial populations is directly linked to the hydrostatic pressure applied (19, 24, 31). Typically, the effectiveness of high pressure on microbial destruction is estimated from the reduction of the baseline population.
Recently we are witnessing the boom of high-pressure science and technology from a small niche field to becoming a major dimension in physical sciences. One of the most …
Under extreme pressure, matter can exhibit novel or counter-intuitive phenomena such as superconductivity at unusually high-temperature, unexpected chemical stoichiometries and reaction...
In 1960 Sergei Stishov, while at the Institute of High-Pressure Physics in Moscow, subjected ordinary beach sand (composed of the mineral quartz SiO 2) to more than 8 GPa of pressure …
Thermodynamic characteristics of high-pressure CH 4 adsorption on shale were studied.. ScCO 2-water-shale long-term coupling (60days/20Mpa/70 °C) experiment were conducted.. Q st decreased first and then increased with increasing n a after ScCO 2 injection.. ΔH, ΔG, and ΔS were analyzed and compared before and after ScCO 2 injection.. CO 2 …
At ambient conditions the great majority of the metallic elements have simple crystal structures, such as face-centred or body-centred cubic, or hexagonal close-packed. However, when subjected to very high pressures, many of the same elements undergo phase transitions to low-symmetry and surprisingl …
Please cite this article as: Damasceno DR et al., Rock mass response for lined rock caverns subjected to high internal gas pressure, Journal of Rock Mechanics and Geotechnical Engineering, https ...
On the other hand, HPH, also known as dynamic high-pressure homogenization or high-pressure valve homogenization, is an emerging continuous flow process technology enabling the homogenization and pasteurization, and in some cases sterilization, of fluids in one single step [122, 210], while the fluid is being subjected to high pressure for less ...
The pasteurizing effect of high pressure was recognized in the 19th century, when in 1899 Hite discovered the shelf life extension in milk using this process. ... which declared that "high pressure processing is a food transformation technology by which solid or liquid foods are subjected to high pressures to improve their safety and, in some ...
The objective of this study was to systematically examine the effect of high-pressure processing and package headspace on package integrity and properties. Working pressures were 400 and 600 MPa, and starting vessel temperatures were 30°C, 60°C, and
The effect of Holder pasteurisation (HoP) (62.5°C for 30 min) or high-pressure treatments (400 or 600 MPa for 3 or 6 min) on the volatile compound profile of human breast milk was evaluated, in order to compare both preservation technologies. A total of 46 different volatile compounds was found in m …
Theodorakakos et al. [19] also investigated the thermal effects in nozzle holes subjected to high pressure drops, paying more attention to the temperature field along the nozzle. Analyzing the two aforementioned effects on the flow, they reported that, depending on the nozzle discharge coefficient and the injection conditions, the flow in ...
The second, known as high-pressure torsion (HPT), involves subjecting a sample, in the form of a thin disk, ... 3-D representations of the local microhardness for disks under an applied pressure of 6 GPa subjected to totals of 0.5, 1, 3 and 7 whole revolutions: these hardness values are also projected onto a lower horizontal plane and shown as ...
Disk of a Cu 38 Zr 54 Al 8 bulk metallic glass was subjected to severe plastic deformation by high pressure torsion up to 25 revolutions. X-ray diffraction was utilized to investigate the microstructure of the deformed sample, while the thermal behavior of the glass was analyzed by differential scanning calorimetry.
High-pressure scientists study effects of pressure on a whole variety of objects, from superhard materials like diamond and boron nitride, through metals, molecular solids, to …
Offshore industry is now pushing into the deepwater and starting to face the much higher energy reservoir with high pressure and high temperature. Besides the significant impacts on the material, strength, and reliability of the wellhead, tree, and manifold valve; high Pressure (HP) also leads to thicker pipe wall that increases manufacturing and installation cost. High …
The specific pressure-temperature conditions to which the rock is subjected will further influence the minerals that are produced during recrystallization; for example, at high pressures calcite will be replaced by a …
High hydrostatic pressure (HHP) is an emerging technology, traditionally employed in ceramics, steel and super alloy production, extrusion, and synthetic materials (Hoover et al., 1989).In the last 2 decades a main and increasingly successful industrial application of HHP is the non-thermal pasteurization of foods, which intends to extend the shelf-life of food products, …
They observed that high pressure induced the decrease of SH content, which was responsible for aggregation of β-LG by the formation of new S–S bonds through SH/S–S interchange reactions. ... Thus, aggregation and conformation of β-LG subjected to DHPM were evaluated in relation to the antigenicity of β-LG. Download: Download high-res ...
High‐pressure processing (HPP) is a non‐thermal treatment in which, for microbial inactivation, foods are subjected to isostatic pressures (P) of 400–600 MPa with common holding times (t) from 1.5 to 6 min. The main factors that influence the ...
Mice exposed to normoxic He and Ne at increased pressure and allowed to choose between a neutral and a cool environment showed a preference for the cooler environment. This behavior was apparent at 5.7 but not at 2.5 atm He. ... Behavioral thermoregulation in mice subjected to high pressure J Appl Physiol (1985). 1989 Jan;66(1):238-44. doi: 10. ...
