Results 31 to 40 of about 7,472,306 (302)

Low-loss photonic crystal fibers for transmission systems and their dispersion properties [PDF]

, 2004
We report on a single-mode photonic crystal fiber with attenuation and effective area at 1550 nm of 0.48 dB/km and 130 square-micron, respectively. This is, to our knowledge, the lowest loss reported for a PCF not made from VAD prepared silica and at the
Folkenberg, J. R., Jacobsen, C., Mortensen, N. A., Nielsen, M. D., Simonsen, H. R.   +4 more
core   +1 more source

Other Effective Area-Based Conservation Measures, Biodiversity Stewardship and Statutory Intervention – A South African Perspective

Potchefstroom Electronic Law Journal, 2023
Area-based approaches are a central component of global efforts to conserve biodiversity. While the focus of many countries has been mainly on protected areas, other effective area-based conservation measures (OECMS) have been accorded global ...
Alexander Paterson
doaj   +1 more source

Mass transfer and hydrodynamic characteristics of new carbon carbon packing: Application to CO2 post-combustion capture [PDF]

, 2011
A novel structured packing, the 4D packing, has been characterized in terms of hydrodynamics, effective area and gas side mass transfer coefficient. The increase of the 4D opening fraction allows to reduce pressure drop and to get a better capacity than ...
Abbé, François, Alix, Pascal, Meyer, Michel, Prevost, Michel, Raynal, Ludovic, Rouzineau, David   +5 more
core   +2 more sources

Development of an urban stormwater model considering effective impervious surface: Ⅱ: urban stormwater simulation and anaysis of hydrological response

Shui kexue jinzhan, 2022
An urban stormwater model was developed to analyze the hydrological response mechanism of effective impervious surfaces under urban stormwater simulation.
Hong ZHOU, Jun LIU, Cheng GAO, Yi ZHOU, Zunle HU, Xiangyang XU, Kaixuan SONG   +6 more
doaj   +1 more source

Design of a porous cored hexagonal photonic crystal fiber based optical sensor with high relative sensitivity for lower operating wavelength

Photonic Sensors, 2017
In this article, highly sensitive and low confinement loss enriching micro structured photonic crystal fiber (PCF) has been suggested as an optical sensor.
Shuvo Sen, Sawrab Chowdhury, Kawsar Ahmed, Sayed Asaduzzaman   +3 more
doaj   +1 more source

The Effective School Development in Remote Area; Case Study in MTs Sunan Kalijaga Sendang

Intelektual, 2020
The difference between urban and rural areas is of course very significant. These differences include economic, cultural, and social factors in the community that become their perspective and thinking paradigm.
Tri Prasetiyo Utomo
doaj   +1 more source

Optimization of Process Parameters to Improve the Effective Area of Deposition in GMAW-Based Additive Manufacturing and its Mechanical and Microstructural Analysis

Metals, 2019
Additive manufacturing of metals using gas metal arc welding has an associated problem of variations of height in the onset and extinguishing parts of the weld bead.
Ali Waqas, Xiansheng Qin, Jiangtao Xiong, Hongbo Wang, Chen Zheng   +4 more
doaj   +1 more source

Design and Analysis of a Photonic Crystal Fiber Sensor for Identifying the Terahertz Fingerprints of Water Pollutants

Photonics
Ensuring the purity of water sources is a paramount global challenge, necessitating the development of highly sensitive and rapid detection technologies.
Sajjad Mortazavi, Somayeh Makouei, Karim Abbasian, Sebelan Danishvar   +3 more
doaj   +1 more source

ANALYSIS OF ACTIVE PHASED ANTENNA ARRAY PARAMETERS FOR THE GURT RADIO TELESCOPE

Radio Physics and Radio Astronomy, 2015
The calculation technique results of numerical analysis of parameters of active phased antenna array (APAA) of the Giant Ukrainian Radio Telescope (GURT) of decameter and meter wavelengths which is being built now nearby Kharkiv at the area of S.
P. L. Tokarsky, A. A. Konovalenko, S. N. Yerin   +2 more
doaj   +1 more source

Usefulness of Vena Contracta for Identifying Severe Secondary Mitral Regurgitation: A Three-Dimensional Transesophageal Echocardiography Study

Reviews in Cardiovascular Medicine, 2023
Background: In secondary mitral regurgitation (SMR), effective regurgitant orifice area by the proximal isovelocity surface area method (EROAPISA) evaluation might cause an underestimation of regurgitant orifice area because of its ellipticity compared ...
Hirokazu Onishi, Masaki Izumo, Toru Naganuma, Yoshihiro J. Akashi, Sunao Nakamura   +4 more
doaj   +1 more source