In Situ Hydration
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. Liposomes as potential carriers for ketorolac ophthalmic delivery: formulation and stability issues
ABSTRACT Drug delivery to treat ocular disorders locally is a challenging endeavor. Traditional ocular dosage form - eye drops - exhibits poor availability, consequently inefficient therapeutic response. The objective of the study was to formulate and characterize a ketorolac tromethamine ocular system with a prolonged release pattern based on liposomes as a
Braz. J. Pharm. Sci.. Publicado em: 22/06/2017
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2. In situ Synchrotron X-ray Powder Diffraction Study of the Early Hydration of α-tricalcium Phosphate/tricalcium Silicate Composite Bone Cement
Bioactivity, osteogenicity and mechanical properties of α-tricalcium phosphate (α-TCP) based phosphates cements can be improved by adding tricalcium silicate (C3S); however, the addition of C3S delays the precipitation and growth of calcium deficient hydroxyapatite (CDHA). Thus, the aim of this work was the study of in situ setting reaction of α-TCP/C3S c
Mat. Res.. Publicado em: 2015-02
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3. Aluminatos tricálcico cúbico e ortorrômbico : análise da hidratação in situ e produtos formados / Cubic and orthorhombic tricalcium aluminate : analysis of in situ hydration and products
A composição do clínquer controla a cinética da hidratação do cimento, devido às fases potencialmente mais reativas. O aluminato tricálcico (C3A) é a fase que reage mais rápido quando em contato com a água, formando rapidamente os aluminatos de cálcio hidratado (C3AH6, C4AH19 e C2AH8), com a liberação de elevada quantidade de calor. Para casos
Publicado em: 2008
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4. Modelagem hidro-mecÃnica dos solos colapsÃveis de PetrolÃndia / Hydro-mechanical modeling of PetrolÃndia collapsible soil
This dissertation aims to reproduce the collapse behavior by hydration of a collapsible soil of PetrolÃndia municipality through a coupled hydro-mechanical modeling by finite element method. The experimental site was in an agricultural school which presented damages caused by collapse of the foundation soil. Souza Neto (2004) carried out a series of laborat
Publicado em: 2006
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5. Avaliação da aderência dos revestimentos argamassados: uma contribuição à identificação do sistema de aderência mecânico
The evaluation of finishing coat of mortar in the construction practice is commonly carried out by a macroscopic approach. However, for a better understanding of the several mechanisms related to mortar characterization and performance a microstructure assessment on these materials is necessary. The adherence of a mortar to the substrate proceeds by mechanic
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/04/2005
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6. Osmotic pressure probe of actin-myosin hydration changes during ATP hydrolysis.
Osmotic stress in the 0.5-5 x 10(6) dyne/cm2 range was used to perturb the hydration of actin-myosin-ATP intermediates during steady-state hydrolysis. Polyethylene glycol (PEG) (1000 to 4000 Da), in the 1 to 10 wt% range, which does not cause protein precipitation, did not significantly affect the apparent KM or the Vmax for MgATP hydrolysis by myosin subfra
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7. Measurement of pulmonary venous and arterial pH oscillations in dogs using catheter tip pH electrodes.
Respiratory pH oscillations were studied in situ in the aorta and superior vena cava of rabbits, and in the pulmonary vein and aorta of open-chested dogs, using catheter tip pH electrodes. Preliminary experiments on two spontaneously breathing rabbits showed pH oscillations of 0.006-0.010 pH units in the ascending aorta at a respiratory rate of 40/min. No os
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8. FIDDLEHEAD, a gene required to suppress epidermal cell interactions in Arabidopsis, encodes a putative lipid biosynthetic enzyme
In plants, the outer epidermal cell wall and cuticle presents a semipermeable barrier that maintains the external integrity of the plant and regulates the passage of various classes of molecules into and out of the organism. During vegetative development, the epidermal cells remain relatively inert, failing to respond to wounding or grafting. During reproduc
The National Academy of Sciences.
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9. Ice as a matrix for IR-matrix-assisted laser desorption/ionization: mass spectra from a protein single crystal.
Lasers emitting in the ultraviolet wavelength range of 260-360 nm are almost exclusively used for matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) of macromolecules. Reports about the use of lasers emitting in the infrared first appeared in 1990/1991. In contrast to MALDI in the ultraviolet, a very limited number of reports on IR-MALD
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10. Aging of Dry Desiccation-Tolerant Pollen Does Not Affect Protein Secondary Structure.
Protein secondary structure and membrane phase behavior in aging Typha latifolia pollen were studied by means of Fourier transform infrared microspectroscopy (FTIR). Membranes isolated from fresh pollen occurred mainly in the liquid crystalline phase at room temperature, whereas the membrane fluidity of aged pollen was drastically decreased. This decrease di
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11. The physical state of water in bacterial spores
The bacterial spore, the hardiest known life form, can survive in a metabolically dormant state for many years and can withstand high temperatures, radiation, and toxic chemicals. The molecular basis of spore dormancy and resistance is not understood, but the physical state of water in the different spore compartments is thought to play a key role. To charac
National Academy of Sciences.
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12. Transcellular water transport in lung alveolar epithelium through mercury-sensitive water channels.
The movement of water between the air space and capillary compartments is important for the maintenance of air space hydration during respiration and for reabsorption of excess alveolar fluid. We have obtained immunocytochemical and functional evidence that plasma-membrane water channels are responsible for water transport in the intact lung. Northern and qu