There are several review articles on high-pressure research 1–12,14,23,24,38,48,49, mostly focusing on high-pressure physics 1,11,12,14,48,49 or chemistry 2,3,6–8, or on specific groups of ...
Exaggerated blood pressure (BP) reactivity is associated with the development of hypertension and cardiovascular disease. Stress, and, to a lesser extent, emotions are suggested to be linked to BP reactivity, but this theorizing lacks robust evidence beyond small laboratory or field studies with narrow participant demographics.
Studies at high pressure and low temperature have helped in finding new superconductors [30] with higher Tc or for studying magnetic ordering in materials [31]. The highest Tc cuprate superconductor (HgBa 2 Ca 2 Cu 3 O 8, Tc = 135K) found so far has been obtained at a pressure of 30 GPa [32].
After highlighting topical examples, aspects of high-pressure diffraction studies on MOFs are summarized that are important to advance the field such as the rigorous reporting of experimental and ...
Distortion of hydrogen bonds can be induced very easily, not only by modifying the crystalline environment, but also by external action (change in temperature or pressure). Variable-temperature studies of hydrogen bonds are quite common. They help to study the nature of the bonds themselves (for example, to estimate the bond energies …
Abstract. Recent advances in high-pressure experimental techniques have yielded high-quality x-ray diffraction data for the high-pressure phases of the group-15 elements Bi, Sb and As, and have made it possible to solve several long-standing problems in their structures.
Compressibility studies have been carried out on Ge–I (diamond‐cubic structure) to 12.0 GPa; the results are in very good agreement with previous work. We confirm the recent report of a substantial lowering of the Ge I–II transition pressure in a nonhydrostatic pressure environment.
2 Key Laboratory of High-temperature and High-pressure Study of the Earth's Interior, Institute of Geochemistry Chinese Academy of Sciences, Guiyang, China; It has been demonstrated that the matters in the earth's interior are subjected to isotropic hydrostatic pressure and are also extensively superimposed by the differential stress. …
Finally, in the pharmaceutical realm, high-pressure studies on ticagrelor, an active pharmaceutical ingredient, reveal the molecule's sensitivity to pressure 18. Specifically, the study finds that ...
Thanks to the high transmittance of diamond, in-situ high-pressure optical measurements have been developed to an extremely convenient and powerful tool in study of 2D materials. The most typical ones are optical absorption/reflectivity, Raman …
Abstract. The effects of high pressure on pharmaceutical compounds and energetic materials can have important implications for both the properties and performance of these important classes of material. Pharmaceutical compounds are frequently subjected to pressure during processing and formulation, causing interconversion between solid …
Heavy fermion systems usually refer to certain intermetallic compounds containing lanthanide (Ce, Yb, Pr, etc.) or actinide (U, Pu, Np, etc.) elements, where the localized electrons in partially filled 4f or 5f orbits form a periodic lattice and are strongly hybridized with the conduction electrons via the Kondo effect.
High-pressure experiments, computer simulations and data science will need to work together and overcome many challenges to successfully undertake future studies.
First-principles calculations have been carried out to study the electronic structure, optical properties and high-pressure structural phase transitions of rarely studied Sc2AlB6 compounds. Ground state structure calculations reveal the compound to be a non-magnetic material with Hexa, Penta, and Hepta boron layers sandwiched between metal …
Azides, Chemical reactions, Compression, Materials, Phase transitions. Abstract. High-pressure chemistry is an interdisciplinary science which uses high …
While high pressure techniques described so far has enabled achieving the pressure/temperature at the center of Earth (about 360 GPa and 6000 K) using a DAC, studies of rheological properties of the Earth and planetary materials under controlled strain rate (creep experiments) have been limited to pressures nearly an order of magnitude …
Abstract. Pressure profoundly alters all states of matter. The symbiotic development of ultrahigh-pressure diamond anvil cells, to compress samples to sustainable multi-megabar pressures; and synchrotron x-ray techniques, to probe materials' properties in situ, has enabled the exploration of rich high-pressure (HP) science. In this article, we ...
The prevalence of hypertension increased from 18.9% with a threshold of >140/90 mmHg to 43.5% with >130/80 mmHg. An SBP of >130 mmHg was present in almost 50% of the participants over the age of ...
1. Introduction. The compound Sn 2 P 2 S 6 experiences a second order phase transition into the uniaxial ferroelectric state at T c ~ 337 K and ambient pressure [1], [2]. This transition relates to the symmetry change from P 2 1 / c to Pc and contains both displacive and order-disorder features [3]. An application of high pressure decreases …
The PHARAO study: prevention of hypertension with the angiotensin-converting enzyme inhibitor ramipril in patients with high-normal blood pressure: a prospective, randomized, controlled prevention trial of the German Hypertension League. J Hypertens. 2008; 26:1487–1496. doi: 10.1097/HJH.0b013e3282ff8864 Crossref Medline Google Scholar; 64.
Hence, previously conducted high-pressure studies on nucleic acids found that long canonical B-DNA duplexes are generally rather pressure stable at ambient temperature (Macgregor 1998; Girard et al. 2007). Girard et al. observed only a minor distortion of the double helix upon pressure perturbation (Girard et al. 2007). The level …
High-pressure studies with x-rays using diamond anvil cells - IOPscience. Reports on Progress in Physics. Review. High-pressure studies with x-rays using …
U.S.A. This study has been extended to high O; pressures (up to 6.4 MPa) for at least two reasons. First, sur- prisingly little kinetic data are available for the C-Oi reaction above 0.1 MPa pressure. Second, as pressure increases, the amount of fleeting oxygen complex participating in carbon gasification increases.
Details. Molecular Beam Epitaxy and High Pressure Studies of van der Waals Magnets. 2019. 9781392630952. English. Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works. Explore millions of resources from scholarly journals, books, newspapers, videos and more, on the ProQuest Platform.
In the first section, high pressure techniques will be briefly described. In the second section, illustrations will be given on different kinds of pressure effects expected to be observed, the system studied being either in the fluid phase or in the solid phase. Because of space limitations, only results relative to simple molecular systems ...