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high pressure prepared
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Effect of microfluidization parameters on the physical
In the multiple emulsion solvent evaporation method a high pressure microf … Effect of microfluidization parameters on the physical properties of PEG-PLGA nanoparticles prepared using high pressure microfluidization J Microencapsul. 2009 Sep;26(6):556-61. doi: 10.1080/02652040802500655. ...
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New materials from high-pressure experiments | Nature …
High-pressure synthesis on an industrial scale is applied to obtain synthetic diamonds and cubic boron nitride (c-BN), which are the superhard abrasives of choice for …
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A Review of Ultrafine-Grained Magnetic Materials Prepared by Using High
High-pressure torsion (HPT) is a severe plastic deformation technique where a sample is subjected to torsional shear straining under a high hydrostatic pressure. The HPT method is usually employed to create ultrafine-grained nano-structures, making it widely used in processing many kinds of materials such as metals, glasses, biological …
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Injectable nanoemulsions prepared by high pressure
Nanoemulsions were prepared according to the high pressure homogenization technique (Stang et al. 2001). Briefly, 6 g of soybean oil were added dropwise to a 2% (w/v) of polysorbate 80 water solution (44 mL) under high-speed stirring (Ultraturrax T25 basic, IKA ® Werke & Co.KG, Staufen, Germany) to obtain an …
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25 Healthy High-Blood Pressure Dinners You Can Make in 25 …
We've pulled together some of our most delicious meals to lower blood pressure that you can get on the table in 25 minutes or less. Packed with potassium and lower in sodium—a combination shown to help promote a healthy blood …
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Structure and magnetic properties of nanocrystalline SmCo
The high-pressure torsion method, first introduced by Bridgman in 1935, 18 has received extensive attention as a top-down severe plastic deformation (SPD) technique in creating ultrafine-grained micro-structures with novel physical properties. 19 HPT produces high-density crystal defects and grain boundaries, which acting as pinning …
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Characterization and morphological study of biodegradable …
2.3 High pressure batch ing method. The schematic and notations of our gas ing chamber are shown in Fig. 1. This system owns a chamber made of high-pressure stainless steel. The supercritical CO 2 as the blowing agent supplies to the chamber through a mass flow meter.
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A Review of Ultrafine-Grained Magnetic Materials Prepared by Using High
Abstract. High-pressure torsion (HPT) is a severe plastic deformation technique where a sample is subjected to torsional shear straining under a high hydrostatic pressure. The HPT method is usually employed to create ultrafine-grained nano-structures, making it widely used in processing many kinds of materials such as metals, glasses ...
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Hardness measurements for high-pressure prepared TaB …
The Vickers hardness of the bulk TaB and nano-TaC ceramics sintered at high pressure and high temperature were measured by using a diamond indentation method. Our tests gave a maximum Vickers hardness of 13.9 GPa for TaB, and 19.2 GPa for nano-TaC ceramics under a load of 29.4 N. The hardness of nano-TaC-5 wt% Co …
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High Blood Pressure Diet Plan
Aim for foods rich in potassium, magnesium and calcium to lower your blood pressure . Banana. Oranges. Apricots. Melon, like cantaloupe, honeydew and watermelon. Dark leafy greens, like spinach and kale. Potatoes. Sweet potatoes. Winter squash, like acorn or butternut.
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High strength generation in cement pastes
Figure 1 illustrates the effect of curing time, pressure and initial w/c ratio on the compressive strength of pastes prepared by high pressure (with- out heating) from a typical I cement. These results are roughly comparable with those of previous workers (Bajza, Franco and Skalny, 1968; Lawrence, 1969; Bajza, 1972). Note that the lowest w/c ...
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Large tensile plasticity in Zr-based metallic glass/stainless …
Interpenetrating-phase BMG composites with large tensile plasticity were prepared successfully by high pressure die casting. • The composites display metallurgical bonding between matrix and reinforcement. • The excellent mechanical properties mainly originate from a proposed mutual-reinforcement mechanism. •
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High Pressure Cold Sprayed (HPCS) and Low Pressure Cold …
This study presents the overview of Cu coatings produced by using high-pressure cold spray (HPCS) and low-pressure cold spray (LPCS) processes prepared from oxygen-free high-conductivity (OFHC) Cu powder in order to attain high coating quality, e.g., dense coating structure. The importance of powder characteristics is …
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Hard nanocrystalline gold materials prepared via high-pressure …
This work demonstrates that the combination of high-pressure cold-forging and the in-situ 4H-to-fcc phase transformation can effectively inhibit the grain growth in the obtained n-Au materials, leading to the formation of novel hard n-Au materials. Our strategy opens up a new avenue for the preparation of nanocrystalline metals with superior ...
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25 Healthy High-Blood Pressure Dinners You Can Make in …
These shrimp, pesto and quinoa bowls are delicious, healthy, pretty and take less than 30 minutes to prep. In other words, they're basically the ultimate easy weeknight dinner. Feel free to add additional vegetables and swap the shrimp for chicken, steak, tofu or edamame. 08 of 25.
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(PDF) Hardness measurements for high-pressure prepared
Hardness measurements for high-pressure prepared TaB and nano-TaC ceramics. Authors: Haihua Chen. Hao Liang. Southwest University of Science and …
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Pectic-oligosaccharides Prepared by Dynamic High-Pressure
Pectic-oligosaccharides (POSs) were prepared from apple pectin by dynamic high-pressure microfluidization (DHPM). Operating under selected conditions (pectin concentration 1.84%, solution temperature 63 °C, DHPM pressure 155MPa and number of cycles 6 passes), 32.92% of the pectin was converted into …
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Hypertensive Crisis: When You Should Call 911 for …
Call 911. Be prepared. If you have been diagnosed with high blood pressure, track your blood pressure and medications. If possible during an emergency, having these logs with you can provide …
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Soy Protein Isolate-Phosphatidylcholine Nanoemulsions Prepared Using
Homogenization pressure and homogenization cycle times were varied, along with SPI and PC concentration. Evaluations included turbidity, particle size, ζ-potential, particl … Soy Protein Isolate-Phosphatidylcholine Nanoemulsions Prepared Using High-Pressure Homogenization
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AlN ceramics prepared by high-pressure sintering with La2O3 …
Contrasted with the E 2 (high) mode (652.2 cm −1) of the AlN powder, the position of the E 2 (high) mode of the AlN bulk material prepared by high pressure is observed at 659.9 cm −1. A Raman shift of 7.7 cm −1 had taken place. This indicates that compressive stress remained in the AlN bulk material sintered under the condition …
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Hardness measurements for high-pressure prepared TaB and …
The high pressure and high temperature (HPHT) method has been intensively investigated to be an effective way for synthesizing phase-pure, bulk and …
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(PDF) Hardness measurements for high-pressure prepared …
The high pressure and high temperature sintering of alpha-Si3N4 and gamma-Si3N4 with Y2O3-Al2O3-La2O3 as additives were studied under pressures of 5.4 GPa and temperatures of 1420-1770 K.
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High blood pressure (hypertension)
High blood pressure (hypertension) is diagnosed if the blood pressure reading is equal to or greater than 130/80 millimeters of mercury (mm Hg). A diagnosis of high blood pressure is usually based …
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Characterization of B4C-SiC ceramic composites prepared by ultra-high
The XRD patterns of B 4 C-SiC ceramic composites obtained by applying the ultra-high pressure sintering technique are shown in Fig. 1.. Download : Download high-res image (140KB) Download : Download full-size image Fig. 1. XRD patterns of the B 4 C–SiC composite materials after densification at 1500 °C. Designation C1 refers to 25 …
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Phase evolution of MgB2 prepared under high pressure
Results showed that high pressure and high temperature are two important factors for synthesizing the MgB 2 phase. Stable MgB 2 can be most effectively obtained in a pressure-temperature region from 3 to 6 GPa and between the melting points of Mg up to 1100 to 1300 °C. MgB 2 starts to decompose into MgB 4 at higher temperatures and …
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Soy Protein Isolate-Phosphatidylcholine Nanoemulsions Prepared …
The nanoemulsions of soy protein isolate-phosphatidylcholine (SPI-PC) with different emulsion conditions were studied. Homogenization pressure and homogenization cycle times were varied, along with SPI and PC concentration. Evaluations included turbidity, particle size, ζ-potential, particle distribution index, and turbiscan stability index …
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New materials from high-pressure experiments | Nature …
Figure 1: Superhard materials, including several new materials prepared by high-pressure synthesis: both low-hardness (blue) and high-hardness (pink) values within a typically measured range are ...
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CaCu3Mn2Te2O12: An Intrinsic Ferrimagnetic Insulator Prepared …
CaCu3Mn2Te2O12 was synthesized using high-temperature and high-pressure conditions. The compound possesses an A- and B site ordered quadruple perovskite structure in Pn3̅ symmetry with the charge combination of CaCu32+Mn22+Te26+O12. A ferrimagnetic phase transition originating from the antiferromagnetic interaction between …
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Characterization and stability evaluation of β
Tan and Nakajima (2005a) successfully prepared β-carotene nanodispersions using an emulsification and evaporation technique with high pressure homogenization and studied their physicochemical properties. They also investigated the influence of phase ratio and homogenization pressure and cycle on particle size parameters and β-carotene …
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Amaranth protein films prepared with high-pressure …
The tensile strength increased progressively with the high-pressure treatment intensity: 26%, 101% and 165% for films prepared from protein dispersions treated at 200, 400 and 600 MPa, respect to the ones prepared with untreated proteins. The elastic modulus also increased, but only after treatment at 400 MPa, reaching 74% …
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The effects of high‐pressure, enzymatic, and …
High-pressure-assisted cellulase treatment provided the best properties to SDF for jelly. In combined treatment, impacts of cellulase treatment were more prominent than HP effects. ... To prepare pomace, …
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Oil-in-water emulsions prepared using high-pressure …
The O/W emulsions were prepared with MCT (oil phase), DOM, and food-grade polysaccharides (GG, XG, and Pec, respectively) by high-pressure homogenisation at 10 MPa for 5 min. The droplet distribution (including droplet diameters and PDI), ζ-potential and pH values of the emulsions are shown in Table 2 .
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Hard and tough ultrafine-grained B4C-cBN composites prepared by high
Fig. 1 a shows the X-ray diffraction patterns of the as-prepared B 4 C-cBN composites with different cBN content after high pressure sintering. The optical image of the mirror-polished sample with 50 wt.% cBN is shown in the inset of Fig. 1 a. Clear diffraction peaks corresponding to B 4 C and cBN are detected, indicating that there is no …
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Hard and tough ultrafine-grained B4C-cBN composites prepared by high
The B 4 C-diamond composite with high hardness and toughness was first prepared by high-pressure sintering of B 4 C and diamond powders at 5 GPa and 1600 °C. The effect of the diamond fraction on the densification, microstructure and mechanical properties of B 4 C-diamond composite were investigated. The results indicated that the …
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Journal of Alloys and Compounds
The microstructures, mechanical properties, thermal conductivities, and corrosion behavior of novel high-thermal-conductivity hypoeutectic Al-Si alloys, prepared by rheological high-pressure die-casting (Rheo-HPDC) and …
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Effects of wheat germ polysaccharides prepared by ultra-high pressure
The yield of WGPs extracted using ultra-high pressure extraction method was (13.8 ± 1.01)%, and the yield was 1.59 times that of WGPs extracted using hot water extraction method. We reckoned that the high pressure treatment destroyed the cell membrane and cell wall of plant, and promoted the extraction of polysaccharides (Zheng …
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Microstructure and magnetic behaviors of FeCoNi (Al) alloys …
In this work, we investigated the microstructure and magnetic properties of FeCoNi (Al) high-entropy alloys (HEAs) prepared by high-pressure solidification (HPS). The results show that incoherent nanoprecipitates distributed in uniaxial grain uniformly, which significantly reduces the average magnetic anisotropy of the alloys.
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Pectic-oligosaccharides prepared by dynamic high-pressure
Pectic-oligosaccharides (POSs) were prepared from apple pectin by dynamic high-pressure microfluidization (DHPM). Operating under selected conditions (pectin concentration 1.84%, solution temperature 63 °C, DHPM pressure 155 MPa and number of cycles 6 passes), 32.92% of the pectin was converted into POS.The resulting …
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Enhanced gelling performance of oxhide gelatin prepared from
In this study, the feasibility of preparing oxhide gelatin from cowhide scrap by high pressure assisted-liquid extraction was verified. Different processing conditions, including high pressure time (15 to 25 min), pressure (250 to 350 MPa), and liquid-to-solid ratio (1:3 to 1:5), were optimized thro …