نتایج جستجو برای: various shell theories

تعداد نتایج: 918309  

2002
E. Kiritsis

Five-brane distributions with no strong-coupling problems and high symmetry are studied. The simplest configuration corresponds to a spherical shell of branes with S geometry and symmetry. The equations of motion with δ-function sources are carefully solved in such backgrounds. Various other brane distributions with sixteen unbroken supercharges are described. They are associated to exact world...

2007
Daniel Grumiller Robert McNees

A comprehensive treatment of black hole thermodynamics in two-dimensional dilaton gravity is presented. We derive an improved action for these theories and construct the Euclidean path integral. An essentially unique boundary counterterm renders the improved action finite on-shell, and its variational properties guarantee that the path integral has a well-defined semi-classical limit. We give a...

Journal: :Physics of Particles and Nuclei Letters 2023

In recent papers [1, 2], we constructed free off-shell $$\mathcal{N} = 2$$ supersymmetric higher spin gauge theories in harmonic superspace and their cubic couplings to hypermultiplet. The present report is a brief review of the results obtained.

2016

The demand for alternate fuels used in the operation of I.C engine is met with CNSL (Cashew nut shell liquid) a by-product of cashew industry which is considered as an economically suitable for producing biodiesel. Cashew nut shell liquid is obtained from the hard cashew nut shell, cardinal a natural phenol obtained from the pyrolysis of CNSL at reduced pressure. The viscosity of the cardinal i...

2003
C. R. Fuller

The noise control characteristics of synchrophasing are investigated using a simplified model of an aircraft fuselage. The analysis presented includes directivity effects of the noise sources and solves the coupled motion between the interior and exterior acoustic fields and the shell vibrational response in closed form. The variation in sound pressure level at various locations inside the shel...

Journal: :ACS applied materials & interfaces 2014
Jingfa Li Jiazhao Wang Xin Liang Zhijia Zhang Huakun Liu Yitai Qian Shenglin Xiong

We present a general strategy to synthesize uniform MnCo2O4 submicrospheres with various hollow structures. By using MnCo-glycolate submicrospheres as the precursor with proper manipulation of ramping rates during the heating process, we have fabricated hollow MnCo2O4 submicrospheres with multilevel interiors, including mesoporous spheres, hollow spheres, yolk-shell spheres, shell-in-shell sphe...

In this work core-shell structure Fe3O4@SiO2@meso-SiO2 microsphere has been successfully prepared. An inorganic magnetic core has been coated with multi-shell structure, dense nonporous silica as an inner layer and mesoporous silica as an outer layer. The dense silica shell can enhance the stability and minimize the negative effect of acidic condi...

Journal: :Physics Letters B 2023

A recent analysis based on the STAR measurement in relativistic heavy-ion collision experiments provides evidence of octupole correlation ground state $^{96}$Zr, description which presents a challenge to nuclear structure models. In this work, we perform projection-after-variation calculations for $^{96}$Zr multidimensionally-constrained Hartree-Bogoliubov model. Our results show that an deform...

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