Results 21 to 30 of about 420,206 (299)

A study on Isatis suspension trap efficiency; Advantages and disadvantages [PDF]

open access: yesDesert, 2011
Different types of sediment trap have been introduced so far to be used in erosion measuring stations, each with its own advantages and disadvantages in trapping aeolian particles.
H R Azimzadeh, M R Ekhtesasi
doaj   +1 more source

Investigations of Rake and Rib Structures in Sand Traps to Prevent Sediment Transport in Hydropower Plants

open access: yesEnergies, 2021
In order to increase the lifespan of hydraulic turbines in hydropower plants, it is necessary to minimize damages caused by sediment erosion. One solution is to reduce the amount of sediments by improving the design of sand trap. In the present work, the
Mads Mehus Ivarson   +2 more
doaj   +1 more source

A linear radiofrequency ion trap for accumulation, bunching, and emittance improvement of radioactive ion beams [PDF]

open access: yes, 2000
An ion beam cooler and buncher has been developed for the manipulation of radioactive ion beams. The gas-filled linear radiofrequency ion trap system is installed at the Penning trap mass spectrometer ISOLTRAP at ISOLDE/CERN. Its purpose is to accumulate
A Kellerbauer   +36 more
core   +4 more sources

Demonstration of an inductively coupled ring trap for cold atoms [PDF]

open access: yes, 2012
We report the first demonstration of an inductively coupled magnetic ring trap for cold atoms. A uniform, ac magnetic field is used to induce current in a copper ring, which creates an opposing magnetic field that is time-averaged to produce a smooth ...
Arnold, A. S.   +4 more
core   +2 more sources

Large atom number Bose-Einstein condensate of sodium [PDF]

open access: yes, 2006
We describe the setup to create a large Bose-Einstein condensate containing more than 120x10^6 atoms. In the experiment a thermal beam is slowed by a Zeeman slower and captured in a dark-spot magneto-optical trap (MOT).
E. D. van Ooijen   +6 more
core   +2 more sources

Field evaluation of two mosquito traps in Zhejiang Province, China

open access: yesScientific Reports, 2021
Mosquito-borne Diseases are a common but severe public health threat. However, there is a lack of consensus on the effect of different mosquito trapping devices in China.
Juan Hou   +10 more
doaj   +1 more source

Evaluation of field performance of BEST aeolian sediment catcher in sandy-loam soil of arid zone of Turkey

open access: yesSoil and Water Research, 2017
Field measurement of wind erosion is still a great challenge for researchers. In this study, field performance of a newly designed sediment trap BEST (Basaran and Erpul Sediment Trap) was evaluated for the first time and compared with the commonly used ...
Mustafa BAŞARAN   +2 more
doaj   +1 more source

Optimizing the catching of atoms or molecules in two-dimensional traps [PDF]

open access: yes, 2012
Single-photon cooling is a recently introduced method to cool atoms and molecules for which standard methods might not be applicable. We numerically examine this method in a two-dimensional wedge trap as well as in a two-dimensional harmonic trap.
Ruschhaupt, A., Singh, V. P.
core   +2 more sources

Efficiency assessment of the gene trap approach [PDF]

open access: yesDevelopmental Dynamics, 1998
The trapping of genes in murine embryonic stem (ES) cells offers three features in one experimental approach: 1) analysis of the expression patterns of unknown genes by using a simple staining method, 2) rapid cloning of unknown genes, and 3) generation of mutant mouse lines.
Voss, A., Thomas, T., Gruss, P.
openaire   +3 more sources

Buffer gas cooling and trapping of atoms with small magnetic moments [PDF]

open access: yes, 2003
Buffer gas cooling was extended to trap atoms with small magnetic moment (mu). For mu greater than or equal to 3mu_B, 1e12 atoms were buffer gas cooled, trapped, and thermally isolated in ultra high vacuum with roughly unit efficiency.
  +16 more
core   +1 more source

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