Results 21 to 30 of about 273,073 (293)

Cosmic Needles versus Cosmic Microwave Background Radiation [PDF]

open access: yes, 2002
It has been suggested by a number of authors that the 2.7K cosmic microwave background (CMB) radiation might have arisen from the radiation from Population III objects thermalized by conducting cosmic graphite/iron needle-shaped dust.
Aguirre A. N.   +16 more
core   +2 more sources

Thin Needle Biopsy in the Diagnosis of Ureteral Obstruction with Malignancy [PDF]

open access: yesObstetrical & Gynecological Survey, 1978
Ureteral obstruction after treatment for abdominal cancers is a common situation in which the thin needle biopsy presents an attractive low morbidity alternative to laparotomy for the diagnosis of malignant disease. A negative biopsy is still nonconclusive, although helpful in determining the next step in the patient's management.
D B, Freiman   +4 more
openaire   +2 more sources

Ultra-Thin Chiral Metasurface-Based Superoscillatory Lens

open access: yesFrontiers in Materials, 2022
The metasurface-based superoscillatory lens has been demonstrated to be effective in finely tailoring the wavefront of light to generate focal spots beyond the diffraction limit in the far-field that is capable of improving the resolution of the imaging ...
Jinxing Li   +4 more
doaj   +1 more source

Magnetohydrodynamics Flow Past a Moving Vertical Thin Needle in a Nanofluid with Stability Analysis

open access: yesEnergies, 2018
In this study, we intend to present the dynamics of a system based on the model of convective heat and mass transfer in magnetohydrodynamics (MHD) flow past a moving vertical thin needle in nanofluid.
Siti Nur Alwani Salleh   +4 more
doaj   +1 more source

Generation of charged droplets by field ionization of liquid helium [PDF]

open access: yes, 1998
Positively charged helium droplets were produced by ionization of liquid helium in an electrostatic spraying experiment, in which fluid emerging from a thin glass capillary was ionized by applying a high voltage to a needle inside the capillary. At 2.2 K,
Lo, Shui-Yin   +3 more
core   +1 more source

Implantable micromechanical parylene-based pressure sensors for unpowered intraocular pressure sensing [PDF]

open access: yes, 2007
This paper presents the first implantable, unpowered, parylene-based microelectromechanical system (MEMS) pressure sensor for intraocular pressure (IOP) sensing.
Agrawal, Rajat   +7 more
core   +1 more source

Novel cannula design improves large volume auto-injection rates for high viscosity solutions

open access: yesDrug Delivery, 2022
A prototype reusable large-volume (2 mL) autoinjector (LVAI) was designed to compare injection performance of a novel 27 gauge ultra-thin wall (UTW) pre-filled syringe (PFS) cannula (8 mm external cannula length, 14.4 mm total needle length) against an ...
Bruce C. Roberts   +5 more
doaj   +1 more source

Removal of a migrated acupuncture needle from the cervical spinal canal with removal confirmation by cone-beam computed tomography in a hybrid operating room

open access: yesTrauma Case Reports, 2023
Background: Acupuncture has become one of the most popular alternative medical treatments in the world. However, if the needle is inserted incorrectly into the body, various adverse events can occur and, in such cases, the needle should be removed ...
Ichiro Kawamura   +6 more
doaj   +1 more source

Overstressed Nanosecond Discharge in the Gases at Atmospheric Pressure and Its Application for the Synthesis of Nanostructures Based on Transition Metals

open access: yesУспехи физики металлов, 2021
The review article presents the characteristics and parameters of an overstressed nanosecond discharge (OND) in air and argon at atmospheric pressure between electrodes made of zinc, copper, and aluminium.
O. K. Shuaibov, A. O. Malinina
doaj   +1 more source

The influence of endogenous surfactant on the structure and drug-release properties of Eudragit NE30D-matrixes [PDF]

open access: yes, 1992
The influence of an endogenous surfactant present in Eudragit NE30D on the structure and drug release (clenbuterol) properties of thin matrices has been examined.
Göpferich, Achim, Lee, Geoffrey
core   +1 more source

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