Results 31 to 40 of about 340,877 (291)

Brazilian species of Gadila (Mollusca: Scaphopoda: Gadilidae): rediscovery of Gadila elongata comb. nov. and shell morphometrics

open access: yesZoologia (Curitiba), 2010
Gadila elongata comb. nov. was described in 1920 from the northern Gulf of Mexico. Until recently, it was only known from the type locality. Herein we present the first record of G.
Carlos H. S. Caetano   +2 more
doaj   +1 more source

A new cosmic shear function: Optimised E-/B-mode decomposition on a finite interval [PDF]

open access: yes, 2009
The decomposition of the cosmic shear field into E- and B-mode is an important diagnostic in weak gravitational lensing. However, commonly used techniques to perform this separation suffer from mode-mixing on very small or very large scales. We introduce
Fu, Liping, Kilbinger, Martin
core   +1 more source

Experimental study and discrete element simulation on interface friction of geo-encased stone columns

open access: yesYantu gongcheng xuebao, 2022
The friction characteristics of the column-soil interface is important to the load transfer mechanism of geo-encased stone columns. In this study, model tests are conducted using a large direct shear device to investigate the effects of the normal stress,
ZHANG Ling 1, 2, 3, XU Ze-yu 1, 2, 3, YAO Pan 1, 2, 3, ZHAO Ming-hua 1, 2, 3, CHEN Long 1, 2, 3
doaj   +1 more source

Spitzer 70~$\mu$m Emission as a SFR Indicator for Sub--Galactic Regions [PDF]

open access: yes, 2010
We use Spitzer 24 $\mu$m, 70 $\mu$m and ground based H$\alpha$ data for a sample of 40 SINGS galaxies to establish a star formation rate (SFR) indicator using 70 $\mu$m emission for sub--galactic ($\sim0.05-2\ \rm{kpc}$) line-emitting regions and to ...
Alonso-Herrero   +34 more
core   +4 more sources

Mechanistic analysis of TBM cutterhead-ground interaction under mud build-up effect

open access: yesFrontiers in Earth Science
IntroductionIn tunnel construction using TBMs, the complex mineral composition of strata and hydrogeological conditions often induce cutterhead mud build-up, which results in sharp increases in torque and thrust, thereby reducing excavation efficiency ...
Renchong Wang   +6 more
doaj   +1 more source

Ultra Wide Swath Imaging With Multi-Channel SAR Systems [PDF]

open access: yes, 2008
Multi-channel radar systems allow for overcoming the inherent limitation of conventional synthetic aperture radar (SAR). An example is the combination of digital beamforming on receive in elevation with multi-aperture SAR signal reconstruction in azimuth
Bordoni, Federica   +4 more
core  

Searching for galaxy clusters using the aperture mass statistics in 50 VLT fields

open access: yes, 2005
Application of the aperture mass (Map-) statistics provides a weak lensing method for the detection of cluster-sized dark matter halos. We present a new aperture filter function and maximise the effectiveness of the Map-statistics to detect cluster-sized
Erben, T.   +5 more
core   +2 more sources

Peroxidasin enables melanoma immune escape by inhibiting natural killer cell cytotoxicity

open access: yesMolecular Oncology, EarlyView.
Peroxidasin (PXDN) is secreted by melanoma cells and binds the NK cell receptor NKG2D, thereby suppressing NK cell activation and cytotoxicity. PXDN depletion restores NKG2D signaling and enables effective NK cell–mediated melanoma killing. These findings identify PXDN as a previously unrecognized immune evasion factor and a potential target to improve
Hsu‐Min Sung   +17 more
wiley   +1 more source

Effects of Aperture Ratio and Aspect Ratio on High-Speed Water-Entry Stability of Hollow Projectiles

open access: yesJournal of Marine Science and Engineering
The oblique water-entry stability of hollow projectiles with different aperture ratios (d/D) and aspect ratios (L/D) is investigated numerically in this study.
Jianqiu Tu   +5 more
doaj   +1 more source

Study on a countermeasure for high level sound generated from boiler tube bank duct using walls made of perforated plate (Grasp critical aperture ratio and influence of cavity volume on suppression effect)

open access: yesNihon Kikai Gakkai ronbunshu, 2017
Karman vortex shedding occurs when the gas passes through the duct with tube bank of the heat exchangers, such as gas heaters and boilers. Very high level sound in called “self-sustained tones” occurs due to the interference of the vortex and the sound ...
Kunihiko ISHIHARA
doaj   +1 more source

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