Introduction: High-pressure injection injuries are rare traumas of upper extremity which can result in high morbidity incompatible with presentation. Clinical presentation right after the injury can be misleading and might cause underrating of the condition. This may lead to latencies in treatment and might worsen the final prognosis of the patients.
In the present paper, we report an investigation into the high-pressure structural phase transition of rare earth antimonides (DySb and ErSb). A modified interaction potential model (MIPM) (including the covalency effect) has been developed. Phase transition pressures are associated with a sudden collapse in volume, indicating the occurrence of a first order phase transition. At compressed ...
Idiopathic intracranial hypertension (IIH) happens when high pressure around the brain causes symptoms like vision changes and headaches. "Idiopathic" means the cause isn't known, "intracranial" means in the skull, and "hypertension" means high pressure.
High Pressure Sintering of WC-10Co Doped with Rare-Earth Elements 383 R a = M1/M3 - M2 (1) The relative density ( R r) was determined according to the following expression: R r = R a / R t (2) in which Ra is the apparent density (g/cm3) and Rt is the theoretical density of the WC10wt.%Co (14.53 g/cm 3). The coercive force of the pellets was determined using a coercive force meter, which create a
The theoretical exploration of the phase diagrams of binary hydrides under pressure using ab initio crystal structure prediction techniques coupled with first principles calculations has led to the in silico discovery of numerous novel superconducting materials. This Perspective focuses on the alkaline earth and rare earth polyhydrides whose superconducting critical temperature, T c, was ...
In rare cases, severe high blood pressure can cause headaches, blurry vision, dizziness, nosebleeds, a fluttering or racing heartbeat, and nausea. If you have high blood pressure and any of these symptoms, get medical care right away.
The crystals of a novel family of rare-earth borate-nitrate compounds, Ln7(BO3)3(NO3)N3O (Ln = Pr, Nd), were grown at high-pressure in KAs flux and their crystal structure was determined. The new type of the crystalline structure consists of parallel chains of Ln6 octahedra connected by common faces and forming the channels with the NO3 triangular planar motifs in the center, and isolated OLn4 ...
After a short introduction to μSR with respect to the study of magnetic properties, followed by a brief outline of the principle of the high pressure-low temperature μSR spectrometer installed at the Paul Scherrer Institute, we discuss some measurements on rare earth materials employing this instrument. They are concerned with: (1) The pressure dependence of the spin turning process in ...
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The phase relations of a wide selection of rare earth disilicates have been investigated up to 10 GPa and 1700 °C using piston cylinder and multi-anvil equipment.Single-crystal X-ray structures have been obtained for the following high-pressure phases: (1) La 2.67 (SiO 4) 2: monoclinic, space group C2/m, Z=2, a=9.419(2), b=5.445(1), c=7.214(1) Å, β=115.71(3)°, R=0.042; disordered Ba 3 (PO ...
There are just a few reports on the high pressure behaviour of cubic rare earth oxides. Fujimora et al [ 24 ] reported in their in situ x-ray diffraction experiments that C-type Y 2 O 3 and Yb 2 O 3 transformed to a high pressure phase with A-type structure at 12 and 15 GPa, respectively, at room temperature in static conditions.
In rare cases, high blood pressure can cause headaches. Early CKD also may not have symptoms. As kidney disease gets worse, some people may have swelling, called edema. Edema happens when the kidneys cannot get rid of extra fluid and salt. Edema can occur in the legs, feet, ankles, or—less often—in the hands or face.
Keywords: high pressure densification, residual stress, spectroscopic calibration, Raman spectroscopy, rare earth elements-luminescence, Brillouin spectroscopy Highlights: 1—Spectroscopic approach to detect the influence of permanent densification in glass.
OSTI.GOV Journal Article: Dynamic model of high-pressure rare-gas excimer lasers. Dynamic model of high-pressure rare-gas excimer lasers. Full Record; Other Related Research; Authors: Werner, C W; George, E V; Hoff, P W; Rhodes, C K Publication Date: Thu Aug 15 00:00:00 EDT 1974
Historically, glaucoma was identified as a disease in which the eye was firm or hard due to high eye pressure. However, doctors gradually came to understand that glaucoma can occur even when eye pressure is normal, which sometimes makes it harder to diagnose. Today, eye pressure is considered a major risk factor for glaucoma but is not included in the definition of this eye disease.
The rare earths form series of compounds which are known for several elements but end abruptly or undergo a change of structure at some member of the series. The diantimonides are one such series. Sb-Sb repulsion becomes stronger as the rare earth size decreases and the previously known series ended at Sm. It was felt that high pressure would overcome the Sb-Sb repulsion and allow bonding to ...
The preparation of the first rare‐earth‐metal nitridophosphate LiNdP 4 N 8 is reported. High‐pressure solid‐state metathesis between LiPN 2 and NdF 3 was employed to yield a highly crystalline product. The in situ formed LiF is believed to act both as the thermodynamic driving force and as a flux to aiding single‐crystal formation in ...
This rare tumor, usually found in an adrenal gland, produces too much of the hormones adrenaline and noradrenaline, which can lead to long-term …
In summary, the catalytic ability of rare-earth metals for converting graphite to diamond at high-pressure high-temperature conditions has been experimentally established.
To our knowledge this is the first report on a high-pressure cornstarch inhalation during occupational activities. This report demonstrates the initial clinical situation, the patient's symptoms, and the severe clinical course. Finally the problems during the management of …
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The Effect of Composition on the High Pressure Behavior of Rare-Earth Phosphate Minerals Karina M. Heffernan Abstract A comprehensive study on the effect of composition on the structural and elastic properties of MPO 4 (M = Ce 3+, Gd3+, Tb3+, Y3+, Sc3+) compounds has been completed. CePO 4 and GdPO 4 are isostructural with monazite (P2
Using high-pressure and molar volume data as well as ionic radius of a trivalent rare earth cation as an independent parameter the relative stabilities of different structures (the cubic C-form ...
High blood pressure, often asymptomatic, can cause headaches, shortness of breath, nosebleeds, and anxiety. Panic attack. ... Thalassemia is a rare group of genetic blood disorders effecting red blood cells and leading to anemia. Metabolic syndrome.
Other rare causes of high blood pressure may be detected by certain routine tests. For example, measuring the potassium level in the blood can help detect hyperaldosteronism Hyperaldosteronism In hyperaldosteronism, overproduction of aldosterone leads to fluid retention and increased blood pressure, weakness, and, rarely, periods of paralysis.
The rare earth polysulfides and polyselenides of Tm, Yb, and Lu are unknown. The ionic radius of the rare earth has become too small to allow the structure common to the known members of the series, and with the polysulfides the stable temperature zone is too low to give the high sulfur pressure necessary for synthesis of RS_2. It was felt that high pressure, high temperature techniques could ...
Rare Symptoms Extremely high blood pressure that occurs suddenly is more likely to produce noticeable symptoms than chronic hypertension. However, it is important to know that even very high blood pressure may not produce symptoms.
The high CSF pressure may cause the optic nerves to swell (papilledema). The optic nerve connects the interior of each eye, the retina, to the vision centers of the brain. ... Because IH is a rare disorder affecting so few patients a central register is key to gathering epidemiological data and to notifying patients of a clinical trial of interest.
Primary pulmonary hypertension (PPH) is high blood pressure in the lungs. It's a rare lung disorder in which the blood vessels in the lungs narrow and the pressure in the pulmonary artery rises far above normal levels. Pulmonary hypertension is a chronic and life-changing disease that can lead to heart failure if it's not treated.
