نتایج جستجو برای: saturation velocity

تعداد نتایج: 188619  

Journal: :iranian journal of pharmaceutical sciences 0
basavaraj k. nanjwade department of pharmaceutics, j. n. medical college, kle university, nehru nagar, belgaum-590010, karnataka, india ganesh k. derkar department of pharmaceutics, j. n. medical college, kle university, nehru nagar, belgaum-590010, karnataka, india hiren bechra department of pharmaceutics, j. n. medical college, kle university, nehru nagar, belgaum-590010, karnataka, india f. v. manvi department of pharmaceutics, kles college of pharmacy, jnmc campus, nehru nagar, belgaum-590010, karnataka, india

a major hurdle in pharmaceutical formulation is water insolubility of most of drugs affecting their stability and bioavailability. if the drug is also insoluble in organic medium, it is difficult to deliver it in a sufficiently bioavailable form and hence it is a great challenge to formulation researchers to overcome such difficulty. although some approaches are available for enhancing the diss...

Journal: :Physical review letters 2005
Yung-Fu Chen M S Fuhrer

Charge transport in semiconducting single-walled nanotubes (SWNTs) with Schottky-barrier contacts has been studied at high bias. We observe nearly symmetric ambipolar transport with electron and hole currents significantly exceeding 25 microA, the reported current limit in metallic SWNTs due to optical phonon emission. Four simple models for the field-dependent velocity (ballistic, current satu...

2013
Kun Xiao Changchun Zou Biao Xiang Jieqiong Liu

Gas hydrate model and free gas model are established, and two-phase theory (TPT) for numerical simulation of elastic wave velocity is adopted to investigate the unconsolidated deep-water sedimentary strata in Shenhu area, South China Sea. The relationships between compression wave (P wave) velocity and gas hydrate saturation, free gas saturation, and sediment porosity at site SH2 are studied, r...

Journal: :Journal of Physics: Conference Series 2009

2017
Jongwon Jung Taeseo Ku Jaehun Ahn

Sand improvements using organic agents have shown promising results. Polyacrylamide is one possible organic agent, which has been shown to influence the shear strength, stiffness, soil remediation, and erosion resistance of geomaterials. In this study, we explored the shear wave velocity (S-wave) and water retention curves of unsaturated sands containing polyacrylamide solutions. The shear wave...

1994
Ganesh Samudra Alan Yong Teng Kiat Lee

Exact analytical expressions for the switching delay of an inverter driving an RC load, taking into account the velocity saturation, are obtained. Modified expressions to include theeffectofsource resistance arethen presented.Owing to the limitation on switching current imposed by the velocity saturation mechanism, the switching delay is substantially increased for identical width-io-length rat...

Forced convective condensation in vertical channel is investigated numerically. The condensation boundary layers that occur due to temperature difference between the walls and saturation temperature of steam is simulated by the volume of fluid (VOF) method. The effect of variations in the hydraulic diameter, steam velocity, Re number and temperature difference between the wall and saturation te...

2010
Vincent E. Dorgan Myung-Ho Bae Eric Pop

We examine mobility and saturation velocity in graphene on SiO2 above room temperature 300– 500 K and at high fields 1 V / m . Data are analyzed with practical models including gated carriers, thermal generation, “puddle” charge, and Joule heating. Both mobility and saturation velocity decrease with rising temperature above 300 K, and with rising carrier density above 2 1012 cm−2. Saturation ve...

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