Skip to main page content
Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation

Search Page

MyNCBI Filters
Results by year

Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1947 4
1948 4
1949 2
1950 3
1951 5
1952 1
1953 5
1954 4
1955 3
1956 2
1957 7
1958 2
1959 3
1960 5
1961 5
1962 1
1963 6
1964 7
1965 4
1973 1
1975 1
1987 1
1989 3
1990 50
1991 96
1992 92
1993 121
1994 155
1995 117
1996 179
1997 147
1998 202
1999 166
2000 169
2001 267
2002 358
2003 529
2004 697
2005 888
2006 965
2007 1253
2008 1436
2009 1664
2010 2192
2011 2331
2012 2391
2013 2526
2014 2464
2015 2462
2016 2088
2017 2097
2018 2202
2019 1368
2020 38
Text availability
Article attribute
Article type
Publication date

Search Results

27,439 results
Results by year
Filters applied: . Clear all
Page 1
Heterogeneous modeling based prosthesis design with porosity and material variation.
Singh SK and Tandon P. J Mech Behav Biomed Mater 2018. PMID 30056310
To increase overall stability of the implant by simultaneous enhancing osseointegration and reducing stress shielding, the work proposes the design of heterogeneous prosthesis with graded porosity and material having radial, axial and mixed (simultaneous radial and axial) variations. Static analysis for material variation models and consolidation analysis for graded porosity and material variation models are performed. ...
To increase overall stability of the implant by simultaneous enhancing osseointegration and reducing stress shielding, the work proposes the …
Metal-Organic Framework Nanoparticles
Wang S, et al. Adv Mater 2018 - Review. PMID 29862586
Due to their well-defined 3D architectures, permanent porosity, and diverse chemical functionalities, metal-organic framework nanoparticles (MOF NPs) are an emerging class of modular nanomaterials. ...
Due to their well-defined 3D architectures, permanent porosity, and diverse chemical functionalities, metal-organic framework nanopar …
Effect of volume of porogens on the porosity of PLGA scaffolds in pH-controlled environment.
Gupta M, et al. Pharm Dev Technol 2018. PMID 28290217
It is often necessary to impart porosity within the scaffold (microparticles) in order to promote the growth of tissue during the regeneration process. ...In this study, we compared the effect of volumes (250 μl, 500 μl and 750 μl) of two porogens, sodium chloride (1.71 M) and ammonium bicarbonate (1.71 M), on the porosity of PLGA microparticles....
It is often necessary to impart porosity within the scaffold (microparticles) in order to promote the growth of tissue during the reg …
Mathematical modelling of variable porosity coatings for controlled drug release.
McGinty S, et al. Med Eng Phys 2017. PMID 28461200 Free article.
In this paper we investigate the extent to which variable porosity drug-eluting coatings can provide better control over drug release than coatings where the porosity is constant throughout. ...In our study, what distinguishes the layers (other than their individual thickness and initial drug loading) is the underlying microstructure, and in particular the effective porosity and the tortuosity of the material. ...
In this paper we investigate the extent to which variable porosity drug-eluting coatings can provide better control over drug release …
Model for Porosity Changes Occurring during Ultrasound-Enhanced Transcorneal Drug Delivery.
Hariharan P, et al. Ultrasound Med Biol 2017. PMID 28335999 Free PMC article.
Described here is a computational model for quantifying changes in corneal porosity during ultrasound exposure. The model is calibrated through experiments involving sodium fluorescein transport through rabbit cornea. ...It was found that exposure to 800-kHz ultrasound at an intensity 2 W/cm(2) for 5 min increased the porosity of the epithelium by a factor of 5. ...
Described here is a computational model for quantifying changes in corneal porosity during ultrasound exposure. The model is calibrat …
Simulating Woodchip Bioreactor Performance Using a Dual-Porosity Model.
Jaynes DB, et al. J Environ Qual 2016. PMID 27136148
We calibrated the dual-porosity model contained in the HYDRUS model for a woodchip bioreactor using the results of a Br breakthrough experiment where we treated Br as a conservative nonadsorbing tracer. ...The dual-porosity model fit the NO data very well, with fitted zero-order reaction rates of 8.7 and 6.8 mg N L d in 2013 and 2014, respectively, and corresponding first-order reaction rates of 0.99 and 1.02 d. ...
We calibrated the dual-porosity model contained in the HYDRUS model for a woodchip bioreactor using the results of a Br breakthrough …
Terahertz study on porosity and mass fraction of active pharmaceutical ingredient of pharmaceutical tablets.
Bawuah P, et al. Eur J Pharm Biopharm 2016. PMID 27288937
In this study, terahertz time-domain spectroscopic (THz-TDS) technique has been used to ascertain the change in the optical properties, as a function of changing porosity and mass fraction of active pharmaceutical ingredient (API), of training sets of pharmaceutical tablets. Four training sets of pharmaceutical tablets were compressed with microcrystalline cellulose (MCC) excipient and indomethacin API by varying either the porosity, height, and API mass fraction or all three tablet parameters. ...
In this study, terahertz time-domain spectroscopic (THz-TDS) technique has been used to ascertain the change in the optical properties, as a …
Porous microspheres: Synthesis, characterisation and applications in pharmaceutical & medical fields
Ghosh Dastidar D, et al. Int J Pharm 2018 - Review. PMID 29940297
Pore structure and porosity are the main factors that govern their applications. There are different well-established methods for their synthesis, like seed swelling, solvent evaporation, polymerization, spray drying and phase separation. ...Thus, synthesis of porous microparticle with predefined porosity is really challenging....
Pore structure and porosity are the main factors that govern their applications. There are different well-established methods for the …
27,439 results
Jump to page
Feedback