Results 21 to 30 of about 36,715 (282)

REFLECTIONS ON IMAGE AND PHOTOGRAPHY: possibilities in research and teaching of Physical Education

open access: yesMotrivivência, 2010
Starting this reflexion from the theoretical contributions such as Guy Debord and Susan Sontag to have a critical understanding of our reality, mediated by images, we intend, throughout this article, to reflect to the reader, some ability to think and ...
Mariana Mendonça Lisboa   +1 more
doaj   +1 more source

Source apportionment resolved by time of day for improved deconvolution of primary source contributions to air pollution [PDF]

open access: yesAtmospheric Measurement Techniques, 2022
Present methodologies for source apportionment assume fixed source profiles. Since meteorology and human activity patterns change seasonally and diurnally, application of source apportionment techniques to shorter rather than longer time periods ...
S. Bhandari   +6 more
doaj   +1 more source

Optical Birefringence Fiber Temperature Sensors in the Visible Spectrum of Light

open access: yesAdvances in Electrical and Electronic Engineering, 2017
This article describes experimental tests to determine PM fibers Panda style responses to a thermal source with different initial temperature. The aim of this study was to determine the sensitivity of a polarization maintaining fiber to the radiating ...
Martin Kyselak   +3 more
doaj   +1 more source

Contamination and Source Identification of the Elemental Contents of Soil Samples from Municipal and Medical Waste Dumpsites in Ile-Ife, Nigeria

open access: yesEQA, 2020
Contamination in soil samples collected from municipal and medical waste sites was assessed by employing four indices: contamination factor (Cf ), degree of contamination (Cdeg), pollution load index (PLI), and index of geoaccumulation (Igeo).
Oyediran Kayode Owoade   +6 more
doaj   +1 more source

PMF forecasting for count processes

open access: yes, 2023
Coherent forecasting techniques account for the discrete nature of count processes. Besides point and interval forecasts, a third way for achieving coherent forecasts is to consider the full predictive probability mass function (PMF) as the actual ...
Alwan, Layth C.   +4 more
core   +1 more source

Accelerating Phosphate Transport Across Membranes via Synergistic Chemical‐Electrochemical Carriers

open access: yesAngewandte Chemie, EarlyView.
A new membrane design principle based on synergistic chemical and electrochemical carriers is proposed to construct an electro‐driven carrier‐conducting membrane for high‐throughput phosphate transport. Monodispersed ferrihydrite nanoparticles embedded within the membrane act as built‐in phosphate carriers, enabling accelerated phosphate migration via ...
Lei Xia   +9 more
wiley   +2 more sources

Os teuto-brasileiros e o papel da imprensa frente ao nacionalismo presente em Blumenau e Hamônia (1937-1945)

open access: yesRevista de Ciências Humanas, 2008
O presente artigo tem como objetivo apresentar uma análise sóciohistórica das diferentes ideologias e políticas étnico-identitárias atreladas à população de origem germânica da região de Blumenau, em Santa Catarina, enfocando o papel de mediação exercido
Eduardo Gomes Silva, Flávio Braune Wiik
doaj   +1 more source

Sampling locations of the four PMFs (PMF 1 –PMF 4) and other sites in China.

open access: yes, 2023
Sampling locations of the four PMFs (PMF 1 –PMF 4) and other sites in China.
Yuanfei Liu (11200364)   +9 more
core   +1 more source

The Analysis of Fiber Sensor of Temperature Field Disturbance by Human Body Part Access

open access: yesAdvances in Electrical and Electronic Engineering, 2014
The principle of this sensor function is based on polarization maintaining fiber (PMF) sensitivity during excitation of both two polarization modes. This excitation is caused by temperature change, when absorbing thermal radiation. This mechanism is used
Filip Dvorak, Jan Maschke, Cestmir Vlcek
doaj   +1 more source

Dynamic Electrophoretic Assembly Coupled With Water‐Splitting‐Induced pH Control Enables Precision Ion Sieving Membranes

open access: yesAdvanced Materials, EarlyView.
A green, external‐catalyst‐free route grows defect‐free covalent organic framework membranes directly on ion‐exchange supports using an alternating electric field and in situ‐generated acid. Through a self‐regulating, self‐healing mechanism, the membranes achieve near‐complete, ultra‐fast separation of monovalent ions such as Li+, Na+, and K+, offering
Mohammad Hossein Jandaghian   +8 more
wiley   +1 more source

Home - About - Disclaimer - Privacy