Results 21 to 30 of about 2,207,935 (300)

Layer-by-layer nanoencapsulation of camptothecin with improved activity [PDF]

open access: yesInternational Journal of Pharmaceutics, 2014
160 nm nanocapsules containing up to 60% of camptothecin in the core and 7-8 polyelectrolyte bilayers in the shell were produced by washless layer-by-layer assembly of heparin and block-copolymer of poly-l-lysine and polyethylene glycol. The outer surface of the nanocapsules was additionally modified with polyethylene glycol of 5 kDa or 20 kDa ...
Gaurav Parekh   +7 more
openaire   +2 more sources

Characteristics of Freeze–Thaw Cycles in an Endorheic Basin on the Qinghai-Tibet Plateau Based on SBAS-InSAR Technology

open access: yesRemote Sensing, 2022
The freeze–thaw (F-T) cycle of the active layer (AL) causes the “frost heave and thaw settlement” deformation of the terrain surface. Accurately identifying its amplitude and time characteristics is important for climate, hydrology, and ecology research ...
Huayun Zhou   +14 more
doaj   +1 more source

Casimir stresses in active nematic films

open access: yes, 2019
We calculate the Casimir stresses in a thin layer of active fluid with nematic order. By using a stochastic hydrodynamic approach for an active fluid layer of finite thickness $L$, we generalize the Casimir stress for nematic liquid crystals in thermal ...
Basu, Abhik   +3 more
core   +4 more sources

A liquid crystal based contact lens display using PEDOT: PSS and obliquely evaporated SiO2 [PDF]

open access: yes, 2012
An active spherically conformed liquid crystal cell is presented comprising PEDOT:PSS as a transparent conductive layer and obliquely evaporated SiO2 as an alignment layer. To tackle compatibility issues with the SU8 processing needed for the spacers, an
Avci, Aykut   +4 more
core   +1 more source

Fluid Migration through Permafrost and the Pool of Greenhouse Gases in Frozen Soils of an Oil and Gas Field

open access: yesRemote Sensing, 2022
Most methane (CH4) and carbon dioxide (CO2) emissions originate from the biodegradation of organic matter of soils and of degrading permafrost in the Arctic.
Gleb Kraev   +6 more
doaj   +1 more source

Double-active-layer index-guided InGaAsP-InP laser diode [PDF]

open access: yes, 1990
A buried crescent InGaAsP-InP laser with two active layers was fabricated to study the temperature behavior of the double-carrier-confinement structure.
Chen, T. R.   +3 more
core   +1 more source

Synthesis and characterization of copper, polyimide and TIPS-pentacene layers for the development of a solution processed fibrous transistor [PDF]

open access: yes, 2011
A study was performed for the development of a flexible organic field effect transistor starting from a polyester fibre as substrate material. Focus of subsequent layer deposition was on low temperature soluble processes to allow upscaling.
Bruneel, Els   +5 more
core   +3 more sources

High-resolution electrical resistivity tomography applied to patterned ground, Wedel Jarlsberg Land, south-west Spitsbergen [PDF]

open access: yesPolar Research, 2015
This article presents results of two-dimensional electrical resistivity tomography (ERT) applied to three types of patterned ground in Wedel-Jarlsberg Land (Svalbard), carried out in late July 2012. The structures investigated include sorted circles, non-
Marek Kasprzak
doaj   +1 more source

A single-layer tuneable microwave absorber using an active FSS [PDF]

open access: yes, 2004
An experimental single-layer active microwave absorber in described. The absorber is a planar structure based upon the topology of a Salisbury screen, but in which the conventional resistive layer is replaced by an active frequency selective surface (FSS)
Chambers, B., Tennant, A.
core   +1 more source

Active boundary layers

open access: yes, 2020
The role of boundary layers in conventional liquid crystals is commonly subsumed in their anchoring on confining walls. In the classical view, anchoring enslaves the orientational field of the passive material under equilibrium conditions. In this work, we experimentally explore the role of confining walls in the behavior of an active nematic.
Hardoüin, Jérôme   +5 more
openaire   +2 more sources

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