نتایج جستجو برای: introduction of arc shaped fins

تعداد نتایج: 21202688  

2014
Roger H. Gerzeski Aaron Sprague Jianjun Hu Timothy S. Fisher

Contiguous graphite fins can be grown with Microwave Plasma CVD from the surface of different types of thermally conductive (TC), graphite fibers. The fins grow from all fiber filaments in multiple same TC graphite fiber tow bundles. Fin morphology consists of contiguous branching graphene basal planes originating from the fiber’s surface and curling outwards regardless of the fiber’s isotropic...

سعادت, سعید, مظاهری, سید احمد, مظهری, مریم سادات, همام, سید مسعود,

The study area is located in Tertiary plutonic belt of Lut Block.  Tertiary intrusive injection in Cretaceous limestone caused the formation of skarn in this region. Injection intrusive changes the texture and mineralogy of limestone and skarn or marble formed. A lens-shaped iron mineralization mainly occurred in the border of intrusions and calcareous unit. Petrological studies show that the w...

2012
Rainer Uhl

Fluorescence microscopy requires high photon-flux densities in the specimen plane. These intensities are only achieved by lasers, arc lamps, and, most recently, light-emitting diodes (LEDs). Lasers and LEDs, however, are restricted to a limited number of wavelength regions, whereas with arc lamps it is possible to select arbitrary wavelengths and wavelength regions. Moreover, the lower cost of ...

Khoroushi, Maryam, Yeganehjo, Majid,

Shear bond strength of Composite / Amalgam restorations: Effect of using adhesive cement Dr. M. Khoroushi *- Dr. M. Yeganehjo ** *Assistant Professor of Operative Dentistry & Dental Materials Dept., Faculty of Dentistry, Isfahan University of Medical Sciences. ** Dentist. Abstract Background and Aim: The aim of this study was to evaluate the shear bond strength (SBS) of composite/amalgam restor...

Journal: :Nihon sempaku kaiyou kougakkai rombunshuu 2021

With the aim of introducing laser-arc hybrid welding (LAHW) into field large steel shipbuilding, a study was carried out to construct T-shaped fully penetrating welded joint with weld length 3,000 mm in one pass. Tack for installation members, which is preliminary step LAHW, by CO2 gas shielded arc welding. Since effect main LAHW on tack has not been sufficiently confirmed, investigations were ...

Journal: :Biology letters 2012
Min Zhu Xiaobo Yu Brian Choo Junqing Wang Liantao Jia

Almost all gnathostomes or jawed vertebrates (including osteichthyans, chondrichthyans, 'acanthodians' and most placoderms) possess paired pectoral and pelvic fins. To date, it has generally been believed that antiarch placoderms (extinct armoured jawed fishes from the Silurian-Devonian periods) lacked pelvic fins. The putative absence of pelvic fins is a key character bearing on the monophyly ...

Journal: :Processes 2023

Modeling of the separation catalyst particles from gas using two devices, a cyclone and novel separator with arc-shaped elements, was performed for fluidized-bed dehydrogenation C4–C5 paraffins to isoolefins as an example. The proposed dust collector allows one reduce erosive wear by several times (~6.5-fold) in identical regimes at parameters process. effect particle size on analyzed under nea...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2017
Brett R Aiello Mark W Westneat Melina E Hale

The biomechanics of animal limbs has evolved to meet the functional demands for movement associated with different behaviors and environments. Effective movement relies not only on limb mechanics but also on appropriate mechanosensory feedback. By comparing sensory ability and mechanics within a phylogenetic framework, we show that peripheral mechanosensation has evolved with limb biomechanics,...

1999
J. Torra

Near infrared observations of DR 18, a HII region in the Cygnus X molecular complex, are presented in this paper. These observations reveal DR 18 as an arc-shaped nebula in the 2.2 μm region, with a central star of V = 15.6 obscured by AV ' 8 magnitudes. Visible and near-infrared spectroscopy and photometry indicate a spectral type around B0.5V for this star, while a near-infrared color-color d...

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