scholarly journals COLD-MODE ACCRETION: DRIVING THE FUNDAMENTAL MASS–METALLICITY RELATION AT z ∼ 2

2016 ◽  
Vol 826 (1) ◽  
pp. L11 ◽  
Author(s):  
Glenn G. Kacprzak ◽  
Freeke van de Voort ◽  
Karl Glazebrook ◽  
Kim-Vy H. Tran ◽  
Tiantian Yuan ◽  
...  
Keyword(s):  
Fundamental Mass

Understanding the Impact of Flow Bypass on the Thermal Performance of Air Cooled Heat Sinks

2014 ◽  
Author(s):  
Krishna Kota ◽  
Mohamed M. Awad
Keyword(s):  
Energy Conservation ◽  
Thermal Resistance ◽  
Thermal Performance ◽  
Heat Sink ◽  
Heat Sinks ◽  
Laminar Regime ◽  
Flow Energy ◽  
Factor Α ◽  
The Impact ◽  
Fundamental Mass

In this effort, theoretical modeling was employed to understand the impact of flow bypass on the thermal performance of air cooled heat sinks. Fundamental mass and flow energy conservation equations across a longitudinal fin heat sink configuration and the bypass region were applied and a generic parameter, referred as the Flow Bypass Factor (α), was identified from the theoretical solution that mathematically captures the effect of flow bypass as a quantifiable parameter on the junction-to-ambient thermal resistance of the heat sink. From the results obtained, it was found that, at least in the laminar regime, the impact of flow bypass on performance can be neglected for cases when the bypass gap is typically less than 5% of the fin height, and is almost linear at high relative bypass gaps (i.e., usually for bypass gaps that are more than 10–15% of the fin height). It was also found that the heat sink thermal resistance is more sensitive to small bypass gaps and the effect of flow bypass decreases with increasing bypass gap.

scholarly journals FUNDAMENTAL MASS-SPIN-MORPHOLOGY RELATION OF SPIRAL GALAXIES

2014 ◽  
Vol 784 (1) ◽  
pp. 26 ◽  
Author(s):  
D. Obreschkow ◽  
K. Glazebrook
Keyword(s):  
Spiral Galaxies ◽  
Fundamental Mass

scholarly journals ANTISYMMETRIC TENSOR UNPARTICLE AND THE RADIATIVE LEPTON FLAVOR VIOLATING DECAYS

2012 ◽  
Vol 27 (10) ◽  
pp. 1250055 ◽  
Author(s):  
E. O. ILTAN
Keyword(s):  
Branching Ratios ◽  
Antisymmetric Tensor ◽  
Lepton Flavor ◽  
Scale Dimension ◽  
Upper Limits ◽  
Free Parameters ◽  
Fundamental Mass

We study the contribution of the antisymmetric tensor unparticle mediation to the branching ratios of the radiative lepton flavor violating decays and predict a restriction region for free parameters of the scenario by using experimental upper limits. We observe that the branching ratios of the radiative lepton flavor violating decays are sensitive to the fundamental mass scales of the scenario and to the scale dimension of antisymmetric tensor unparticle. We obtain a more restricted set for the free parameters in the case of the μ→e γ decay.

scholarly journals Validating The Core Concept Of “Mass Balance”

2021 ◽  
Vol 45 (2) ◽  
pp. 276-280
Author(s):  
Joel Michael ◽  
Harold Modell
Keyword(s):  
Conceptual Framework ◽  
Mass Balance ◽  
Balance Equation ◽  
Teaching And Learning ◽  
Mass Balance Equation ◽  
Core Concept ◽  
Conceptual Frameworks ◽  
The Core ◽  
Making Sense ◽  
Fundamental Mass

We have created a conceptual framework for the core concept of “mass balance.” Unlike the previous conceptual frameworks that we have created and validated, the framework for “mass balance” is simply a description in words of the fundamental mass balance equation and the implications of the equation. We surveyed physiology faculty and asked them to rate the importance of “mass balance” as defined by the conceptual framework and also to rate the importance for their students of being able to apply the core concept to liquids, gases, solutes, and solids. Respondents indicated that “mass balance” is important and that our conceptual framework provides a useful tool for teaching and learning. We discuss several examples of how “mass balance” can be used in making sense about a variety of physiological phenomena.

scholarly journals Quantum deformations of conformal algebras introducing fundamental mass parameters

1996 ◽  
Vol 371 (3-4) ◽  
pp. 215-222 ◽  
Author(s):  
Jerzy Lukierski ◽  
Pierre Minnaert ◽  
Marek Mozrzymas
Keyword(s):  
Conformal Algebras ◽  
Quantum Deformations ◽  
Fundamental Mass

Chemical Smoothing of Rough Metal Surfaces

1992 ◽  
Vol 114 (4) ◽  
pp. 421-426 ◽  
Author(s):  
D. E. Kim ◽  
N. P. Suh
Keyword(s):  
Chemical Etching ◽  
Material Removal ◽  
Metal Surfaces ◽  
Cost Effective ◽  
Simplified Model ◽  
Irregular Surface ◽  
Diffusion Controlled ◽  
Dissolved Species ◽  
Smoothing Process ◽  
Fundamental Mass

A chemical etching method is investigated as a possible approach to smoothing metal surfaces automatically. In a chemical etching process metal is removed due to chemical reaction and the dissolved species are transported away from the surface mainly by diffusion. Controlled dynamics introduced to the etchant motion provide the conditions necessary to perform preferential material removal such that an irregular surface is smoothed. A simplified model for the smoothing process based on fundamental mass transfer understandings is presented. Experimental results of smoothing electric discharge machined 440 stainless steel specimens are also presented. This work is motivated by the need to develop a cost effective way to manufacture molds during secondary processing.

scholarly journals FERMION MASSES, NEUTRINO MIXING AND CP VIOLATION FROM THE ANTI-GRAND-UNIFICATION MODEL

1998 ◽  
Vol 13 (29) ◽  
pp. 5037-5074 ◽  
Author(s):  
C. D. FROGGATT ◽  
M. GIBSON ◽  
H. B. NIELSEN ◽  
D. J. SMITH
Keyword(s):  
Cp Violation ◽  
Mass Scale ◽  
Grand Unification ◽  
Neutrino Mixing ◽  
Mixing Angles ◽  
Quantum Numbers ◽  
Fermion Masses ◽  
The Standard Model ◽  
Higgs Fields ◽  
Fundamental Mass

The fermion masses and mixing angles are fitted using only three free parameters in a nonsupersymmetric extension of the Standard Model, with new, approximately conserved chiral gauge quantum numbers broken by a set of Higgs fields. The fundamental mass scale of this anti-grand-unification model is given by the Planck mass. We also calculate neutrino mixing angles and masses, as well as CP violation from the CKM matrix. A good fit to the observed fermion masses is obtained, but our predictions of the neutrino masses are too small to lead to any observable neutrino oscillation effects claimed today, without introducing another mass scale. We also give some arguments in support of this type of model based on the observed fermion masses.

An Investigation of Electrolytic Jet Polishing at High Current Densities

1963 ◽  
Vol 85 (4) ◽  
pp. 395-401 ◽  
Author(s):  
Reno R. Cole ◽  
Yoram Hopenfeld
Keyword(s):  
Mass Transfer ◽  
Flow Rate ◽  
Mathematical Analysis ◽  
High Current ◽  
Electrolyte Flow ◽  
Current Densities ◽  
Relationship Of ◽  
The Relationship ◽  
Modified Theory ◽  
Fundamental Mass

A method of polishing metals by means of an electrolytic jet at extremely high current densities (to 1750 amps per sq in.) is described. Data are presented on the relation of polishing effect on various metals to current density and electrolyte flow rate for several electrolytes. An experimental method is described whereby the relationship of the above factors can be determined. It was found that all metals investigated could be polished at high enough current densities. Previous theories of electrolytic polishing are discussed and shown to not fully account for the process investigated. A modified theory to account for polishing at the high current densities observed is presented and is supported by mathematical analysis based on fundamental mass transfer considerations.

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