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Podichetty Jagdeep T JT School of Chemical Engineering, Oklahoma State University, 423 Engineering North, Stillwater, OK, 74078, - - 2014
The goal of this study was to better understand how analytical permeability models based on scaffold architecture can facilitate a non-invasive technique to real time monitoring of pressure drop in bioreactors. In particular, we evaluated the permeability equations for electrospun and freeze dried scaffolds via pressure drop comparison in an ...
Tiong T Joyce TJ Manufacturing and Industrial Processes Research Division, Faculty of Engineering, University of Nottingham Malaysia Campus, 43500 Semenyih, Selangor, Malaysia. Electronic address: - - 2014
One of the uses of ultrasound in dentistry is in the field of endodontics (i.e. root canal treatment) in order to enhance cleaning efficiency during the treatment. The acoustic pressures generated by the oscillation of files in narrow channels has been calculated using the COMSOL simulation package. Acoustic pressures in ...
Martis Vladimir V Netherlands Organisation for Scientific Research (NWO), Dutch-Belgium Beamline, European Synchrotron Radiation Facility, BP 220, 6 Rue Jules Horowitz, 38043 Grenoble, - - 2014
A high-pressure gas rig for in situ catalytic reactions at X-ray absorption spectroscopy beamline (BM26A) has been developed. The rig enables catalysts to be studied in a variety of cells under well controlled and industrially relevant operation conditions. A large variety of gas mixtures can be generated and pressures of ...
Leong Xin-Fang XF 0000-0002-3838-9141 Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia ; Department of Clinical Oral Biology, Faculty of Dentistry, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, - - 2014
This review is to examine the current literatures on the relationship between periodontitis and hypertension as well as to explore the possible biological pathways underlying the linkage between these health conditions. Hypertension is one of the major risk factors for cardiovascular diseases. Oxidative stress and endothelial dysfunction are among the ...
Svetovoy Vitaly B VB 1] MESA+ Institute for Nanotechnology, University of Twente, PO 217, 7500 AE Enschede, The Netherlands [2] Institute of Physics and Technology, Yaroslavl Branch, Russian Academy of Sciences, 150007, Yaroslavl, - - 2014
Microsystems become part of everyday life but their application is restricted by lack of strong and fast motors (actuators) converting energy into motion. For example, widespread internal combustion engines cannot be scaled down because combustion reactions are quenched in a small space. Here we present an actuator with the dimensions ...
Tan Qiulin Q Key Laboratory of Instrumentation Science & Dynamic Measurement, Ministry of Education, North University of China, Tai Yuan 030051, China. - - 2014
In response to the growing demand for in situ measurement of pressure in high-temperature environments, a high temperature capacitive pressure sensor is presented in this paper. A high-temperature ceramic material-alumina is used for the fabrication of the sensor, and the prototype sensor consists of an inductance, a variable capacitance, and ...
Swartz Harold M HM EPR Center for the Study of Viable Systems, The Geisel School of Medicine at Dartmouth, Lebanon, NH, 03766, USA, - - 2014
EPR oximetry, which enables reliable, accurate, and repeated measurements of the partial pressure of oxygen in tissues, provides a unique opportunity to investigate the role of oxygen in the pathogenesis and treatment of several diseases including cancer, stroke, and heart failure. Building on significant advances in the in vivo application ...
Noisser Theresa - - 2013
We report the synthesis of monolithic porous hybrid organic-inorganic materials based on tetraethoxysilane (TEOS) and a bifunctional precursor synthesized from 3-aminopropyltriethoxysilane (APTES) and 3-glycidoxypropyltrimethoxysilane (GLYMO) via base catalysis. To compensate for the slower hydrolysis and condensation rate of the organically modified silane in basic media, it was prehydrolysed prior to ...
Feitosa Vp - - 2013
To evaluate the effects of two methods to simulate physiologic pulpal pressure on the dentine bonding performance of two all-in-one adhesives and a two-step self-etch silorane-based adhesive by means of microtensile bond strength (μTBS) and nanoleakage surveys. The self-etch adhesives (G-Bond Plus [GB], Adper Easy Bond [EB] and Silorane adhesive ...
Sibille Nathalie - - 2013
Among other perturbations, high hydrostatic pressure has proven to be a mild yet efficient way to unfold proteins. Combining pressure perturbation with NMR spectroscopy allows for a residue-per-residue description of folding reactions. Accessing the full power of NMR spectroscopy under pressure involves the investigation of conformational sampling using orientational restraints ...
Trapp Marcus - - 2013
The effects of high hydrostatic pressure on the structure and dynamics of model membrane systems were investigated using neutron scattering. Diffraction experiments show shifts of the pre- and main-phase transitions of multilamellar vesicles of 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) to higher temperatures with increased pressure which are close to results observed previously by ...
Tourah Anita - - 2013
Surface roughness and irregularities are important properties of dental investment materials that can affect the fit of a restoration. Whether setting under air pressure affects the surface irregularities of gypsum-bonded and phosphate-bonded investment materials is unknown. The purpose of this study was to investigate the effect of air pressure on ...
Abbaspourrad Alireza - - 2013
We introduce a facile approach for the production of gas-filled microcapsules designed to withstand high pressures. We exploit microfluidics to fabricate water-filled microcapsules that are then externally triggered to become gas-filled, thus making them more echogenic. In addition, the gas-filled microcapsules have a solid polymer shell making them resistant to ...
Weng Qunhong - - 2013
That's below the belt: Porous BCNO materials with tunable ultra-narrow pore widths (0.4-1.1 nm) were prepared and investigated with regard to H2 storage. The as-prepared samples show similar belt-like morphologies, chemical compositions, surface areas, and pore volumes. The difference in H2 sorption behavior for the materials reveals that a narrower pore ...
Xin Huolin L - - 2013
The understanding of solid-gas interactions has been greatly advanced over the past decade on account of the availability of high-resolution transmission electron microscopes (TEMs) equipped with differentially pumped environmental cells. The operational pressures in these differentially pumped environmental TEM (DP-ETEM) instruments are generally limited up to 20 mbar. Yet, many ...
Hasell Tom - - 2013
A chemoselective spectroscopic method for measuring CO2 sorption isotherms at pressures up to 14 MPa (140 bar) is validated against manometric measurements and molecular simulations, giving insights into the preferred sorption sites in various crystalline porous organic cages.
Mishra Prashant - - 2013
Structural transformation of MIL-53(Al) metal organic framework from large pore to narrow pore form (lp → np) or vice versa is known to occur by adsorption of certain guest molecules, by temperature change or by applying mechanical pressure. In this work, we perform a systematic investigation to demonstrate that adsorbent ...
Southerland Janet H - - 2013
Periodontal disease, hypertension, and blood pressure among older adults in Puerto Rico. Rivas-Tumanyan S, Campos M, Zevallos JC, Joshipura KJ. J Periodontol 2013;84:203-11. Janet H. Southerland, DDS, MPH, PhD PURPOSE/QUESTION: To determine the association between clinically measured periodontal disease and clinically assess hypertension in a representative sample of elderly Puerto ...
Amoian Babak - - 2013
Changes in pulse rate and blood pressure are common consequences during oral surgeries. Hypoxia during surgical process is another side effect. The objective of the present study was evaluation of blood hemoglobin oxygenation and hemodynamic changes during periodontal surgery. This clinical trial study was conducted upon 50 subjects aged 30-55 ...
Li Yu - - 2013
Abstract To overcome the limitations of the conventional particle size reduction technologies, a novel combinative particle size reduction method for the effective production of homogeneous nanosuspensions was investigated. Ursodeoxycholic acid, a poorly soluble drug representative, was tried to prepare nanosuspension by homogenization technology and high-pressure precipitation tandem homogenization technology. It ...
Mandal Manik - - 2013
Over the last two decades, researchers have studied extensively the synthesis of mesostructured materials, which could be useful for drug delivery, catalytic cracking of petroleum, or reinforced plastics, among other applications. However, until very recently researchers used only temperature as a thermodynamic variable for synthesis, completely neglecting pressure. In this ...
Le Ngoc Tuan - - 2013
This work aimed at understanding the combined effect of sludge pH, temperature, and external pressure on the efficiency of sewage sludge ultrasound (US) pretreatment. Based on the evolution of both the degree of sludge disintegration (DDCOD) and pH, application of 40 mgNaOH/gTS during 30 min was selected for chemical pretreatment. Mechanical and ...
Panozzo Agnese - - 2013
The effect of high pressure homogenisation (HPH) on structure (Bostwick consistency, particle size distribution and microstructure) and carotenoid in vitro bioaccessibility of different tomato pulps was investigated. HPH decreased tomato particle size due to matrix disruption and increased product consistency, probably due to the formation of a fibre network. Homogenisation ...
Roche Julien - - 2013
The impact of pressure on the backbone (15) N, (1) H and (13) C chemical shifts in N-terminally acetylated α-synuclein has been evaluated over a pressure range 1-2500 bar. Even while the chemical shifts fall very close to random coil values, as expected for an intrinsically disordered protein, substantial deviations ...
Ildyakov Andrey V - - 2013
Solubility of helium in ice Ih has been examined both experimentally and theoretically. It has been demonstrated that the calculations are in good accord with the experimental data. The tested calculation method has been used for deriving helium solubility in ice Ih at pressures up to 2000 bar and temperatures ...
Vidal Fábio - - 2013
AIM: To evaluate the effects of non-surgical periodontal treatment on left ventricular mass (LVM), arterial stiffness, systolic and diastolic blood pressure and plasma levels of inflammatory markers (C-reactive protein (CRP), fibrinogen and interleukin-6) in refractory hypertension patients. MATERIAL AND METHODS: This interventional prospective cohort pilot study included 26 patients (53.6 ± 8.0 years ...
Rahimi Yazdi Saeed - - 2013
Curcumin is a bioactive polyphenolic compound extracted from turmeric with known anti-inflammatory properties, and its hydrophobic nature restricts its solubility and its bioaccessibility. Solubility may be improved upon binding of curcumin to native or treatment-modified casein micelles. The present work demonstrated that high hydrostatic pressure treatment of skim milk increases ...
Lv Junjun - - 2013
In order to reduce the volume of exploding initiator system, a metal foil spark gap switch was designed and fabricated using magnetron sputter deposition and standard microelectronic technology. The switch constitutes of two main electrodes and a trigger electrode, and stylus profiler was employed to ascertain dimension of the switch. ...
Tateiwa Naoyuki - - 2013
Two modifications have been made to a miniature ceramic anvil high pressure cell (mCAC) designed for magnetic measurements at pressures up to 12.6 GPa in a commercial superconducting quantum interference (SQUID) magnetometer [N. Tateiwa et al., Rev. Sci. Instrum. 82, 053906 (2011); ibid. 83, 053906 (2012)]. Replacing the Cu-Be piston ...
Chen Ziyang - - 2013
Scutellariae radix (SR, from the roots of Scutellaria baicalensis Georgi) is thought to regulate blood pressure. In this study, HPLC-based purification coupled with MS, NMR analysis revealed that baicalin, a major flavone in SR, stimulates endothelial NO generation, suggesting its potential as an ingredient in medicinal food and beverage to ...
Jaffari S - - 2013
Understanding and controlling powder de-agglomeration is of great importance in the development of Dry Powder Inhaler (DPI) products. Dry dispersion laser diffraction measures particle size readily under controlled dispersing conditions, but has not been exploited fully to characterise inherent powder dispersibility. The aim of the study was to utilise particle ...
Khan Sara - - 2013
Injection of sodium hypochlorite (NaOCl) from the root canal into periapical tissues may result in a NaOCl incident. The purpose of this study was to examine the fluid pressure generated by canal cleansing devices at the apical interface, when the tip of the irrigation device was not binding to the ...
Kurniasih Budiastuti - - 2013
This paper concerns tolerance to 50-200 mM NaCl of submerged rice (Oryza sativa cv. Amaroo) during germination and the first 138-186 h of development, in aerated solution. Rice was able to germinate and the seedlings even tolerated exposure to 200 mM NaCl, albeit with severe growth restrictions. After return to ...
Bonetti Marco - - 2013
We present fluorescence recovery measurements after photobleaching performed under high pressure in liquids that fill square-section fused silica micro-capillaries. These micro-capillaries withstand pressure up to 2500 bar for a wall thickness of about 140 μm and fit easily on the microscope stage. This technique allows the translational diffusion coefficient of ...
Vázquez-Gutiérrez José Luis - - 2013
Onions have antioxidant properties and they are an important source of bioactive compounds such as phenols. The aim of this work was to study the effect of high hydrostatic pressure (HHP) (100-600 MPa/1-3 min/25 °C) on the microstructure and antioxidant properties of onions (cv. Doux) and its relationship with changes ...
Murakami Natsuko - - 2013
The aim of this study was to assess the effect of high-pressure polymerization on mechanical properties of denture base resin. A heat-curing denture base resin and an experimental PMMA were polymerized under 500MPa of pressure by means of an isostatic pressurization machine at 70°C for 24h to make rectangular specimens ...
Vajpai Navratna - - 2013
Proteins denature not only at high, but also at low temperature as well as high pressure. These denatured states are not easily accessible for experiment, because usually heat denaturation causes aggregation, whereas cold or pressure denaturation occurs at temperatures well below the freezing point of water or pressures above 5 ...
Yao A - - 2013
This paper presents EIT-based fabric sensors that aim to provide a pressure mapping using the current carrying and voltage sensing electrodes attached to the boundary of the fabric patch. Pressure-induced shape change over the sensor area makes a change in the conductivity distribution which can be conveyed to the change ...
Cardoso Lourdes Casas - - 2013
In the work described here, two techniques for the recovery of anthocyanins from potato peel were studied and compared. One of the techniques employed was supercritical fluid extraction (SFE) with pure CO2 or with CO2 and ethanol as cosolvent and the other technique was pressurized liquid extraction (PLE), where the ...
Sanadhya Y K - - 2013
Background: Dental treatment induces pain anxiety and fear. This study was conducted to assess the changes in hemodynamic, ventilator, and electrocardiograph changes during extraction procedure among 12-15-year-old children and compare these changes with anxiety, fear, and pain. Materials and Methods: A purposive sample of 60 patients selected based on inclusion ...
Suwa Fumihiko - - 2013
The injection of acrylic resin into vessels is an excellent method for macroscopically and microscopically observing their three-dimensional features. Conventional methods can be enhanced by removal of the polymerization inhibitor (hydroquinone) without requiring distillation, a consistent viscosity of polymerized resin, and a constant injection pressure and speed. As microvascular corrosion ...
Dąbrowa Tomasz T Silesian Piasts University of Medicine in Wrocław, Wrocław, - - 2013
Cylindrical telescopic crowns belong to bolt dentures, because their adhesion strength is based on the friction force. The magnitude of static and slide friction forces depends on the strain within the contact area and properties of materials employed. Friction force value between telescope elements declines in the first phase of ...
de Oliveira Kuhn Graciele - - 2012
Commercial inulinase from Aspergillus niger was immobilized in montmorillonite and then treated in pressurized propane and liquefied petroleum gas (LPG). Firstly, the effects of system pressure, exposure time, and depressurization rate, using propane and LPG, on enzymatic activity were evaluated through central composite design 2(3). Residual activities of 145.1 and ...
Kirsch Christian - - 2012
The effect of pressure, at elevated temperatures, is reported on the activity and stability of a thermophilic endo-ß-Glucanase from the filamentous fungus Talaromyces emersonii. The production of reduced sugars after treatment at different temperatures and pressures is used as a measure of the activity and stability of the enzyme. The ...
Lock Nina - - 2012
Powder diffraction is used to study thermal expansion properties of MOF-5 at moderate helium gas pressures: 1.7 bar (100-500 K) and 5-150 bar (150-300 K). The framework shows negative thermal expansion (NTE) at all pressures, but vibrational motions causing NTE are damped with increasing pressures, leading to decreased NTE.
Horkay Ferenc - - 2012
Articular cartilage is a low-friction, load-bearing tissue located at joint surfaces. The extracellular matrix (ECM) of cartilage consists of a fibrous collagen network, which is pre-stressed by the osmotic swelling pressure exerted by negatively charged proteoglycan aggregates embedded in the collagen network. The major proteoglycan is the bottlebrush shaped aggrecan, ...
Lopes Marlene - - 2012
Pichia pastoris CBS 2612 behavior under air pressures of 1, 3 and 5 bar in culture media of glycerol (pure and crude) and methanol was studied. Generally, the increase in oxygen transfer rate due to the increase of total pressure improved cellular growth for all carbon sources and for batch and ...
Zotos Anastasios - - 2012
Mussel samples were brined in 0%, 10% and 20% sodium chloride solutions and steamed with 2%, 5% and 8% liquid smoke at 1 (atmospheric pressure), 1.5 and 2 bar pressures. Sodium chloride and moisture content and instrumental color were analyzed. They were also objectively and hedonically assessed by 35 and ...
Huang Qingsong - - 2012
An approach to fabricate large-scale graphene nanoribbons (GNRs) with tunable ribbon widths is presented. Regular steps with variable heights from 1 to 100 nm can be prepared on a SiC substrate by a low-pressure etching process. Graphene can be epitaxially grown only on the side walls of the steps, thereby ...
Feitosa Vp - - 2012
SUMMARY The aim of this study was to evaluate the effects of extended light-curing procedures on the microtensile bond strength (μTBS) of one-step self-etch adhesives (1-SEAs) submitted to simulated pulpal pressure. Coronal deep-dentin specimens were bonded using Clearfil S3 Bond (S3), Adper Easy Bond (EB), or G-Bond Plus (GB) following ...
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