Results 41 to 50 of about 89,525 (293)

Automated distance estimation for wildlife camera trapping

open access: yesEcological Informatics, 2022
The ongoing biodiversity crisis calls for accurate estimation of animal density and abundance to identify sources of biodiversity decline and effectiveness of conservation interventions. Camera traps together with abundance estimation methods are often employed for this purpose.
Johanns, Peter   +2 more
openaire   +2 more sources

Single photons emitted by nano-crystals optically trapped in a deep parabolic mirror

open access: yes, 2020
We investigate the emission of single photons from CdSe/CdS dot-in-rods which are optically trapped in the focus of a deep parabolic mirror. Thanks to this mirror, we are able to image almost the full 4$\pi$ emission pattern of nanometer-sized elementary
Bramati, Alberto   +5 more
core   +1 more source

Toward the Stable Optical Trapping of a Droplet with Counter Laser Beams under Microgravity [PDF]

open access: yes, 2006
To identify the optimum conditions for the optical trapping of a droplet under microgravity, we theoretically analyzed the efficiency of trapping with counter laser beams.
Akihiro Isomura   +15 more
core   +2 more sources

Camera trapping of large mammals in Yenice Forest, Turkey: local information versus camera traps [PDF]

open access: yesOryx, 2009
Abstract Information on large mammals in Turkey is limited, and widely applicable, reliable field methods need to be used to gather appropriate data for conservation and management. To evaluate local information on mammal species we conducted interview and ground surveys, followed by a camera trap survey, during January–May 2006 in Yenice Forest, a ...
Özgün Emre Can, İnci̇ Togan
openaire   +1 more source

Reconfigurable Magnetic Soft Microrobot for Acoustically Triggered Targeted Bacterial Sterilization

open access: yesAdvanced Functional Materials, EarlyView.
Reconfigurable magnetic soft microrobots integrate in situ‐grown piezoelectric zinc oxide nanorods that produce reactive oxygen species upon acoustic excitation. Combining magnetically guided transport with thermally induced planar reconfiguration, the microrobots achieve targeted delivery and enhanced bacterial sterilization through efficient on ...
Quan Gao   +12 more
wiley   +1 more source

Species-specific Comparison of Mammal Detection Rates between Field Surveys and Camera Trapping in Forest Areas Using the Fifth National Ecosystem Survey of South Korea [PDF]

open access: yesGeo Data
This study aimed to compare the detection rates of field surveys and camera trapping using data from forest areas within 822 survey grids of the 5th National Ecosystem Survey of South Korea (2019-2023). Detection rates for 15 mammal species were analyzed.
Min-Sik Kim, Junseok Lee, Sang-Yeon Lee
doaj   +1 more source

The Dynamics of Interfacial Trap States in High‐Detectivity Near‐Infrared Photomultiplication Organic Photodetectors

open access: yesAdvanced Functional Materials, EarlyView.
Photomultiplication organic photodetectors (PM OPDs) are an attractive strategy for health‐monitoring. Here, PM‐OPDs are reported with a specific detectivity of 5.7 × 1012 Jones and external quantum efficiency values of 3500% under −10 V. The dynamics of carrier trapping in these devices are elucidated through trap selective spectroscopical techniques.
Marie Houot   +9 more
wiley   +1 more source

Grizzly Bear Noninvasive Genetic Tagging Surveys: Estimating the Magnitude of Missed Detections. [PDF]

open access: yesPLoS ONE, 2016
Sound wildlife conservation decisions require sound information, and scientists increasingly rely on remotely collected data over large spatial scales, such as noninvasive genetic tagging (NGT). Grizzly bears (Ursus arctos), for example, are difficult to
Jason T Fisher   +3 more
doaj   +1 more source

Single and dual fiber nano-tip optical tweezers: trapping and analysis

open access: yes, 2013
An original optical tweezers using one or two chemically etched fiber nano-tips is developed. We demonstrate optical trapping of 1 micrometer polystyrene spheres at optical powers down to 2 mW.
Decombe, Jean-Baptiste   +2 more
core   +4 more sources

Coherent manipulation of atomic qubits in optical micropotentials [PDF]

open access: yes, 2007
We experimentally demonstrate the coherent manipulation of atomic states in far-detuned dipole traps and registers of dipole traps based on two-dimensional arrays of microlenses.
A. Kaplan   +24 more
core   +2 more sources

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