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2022 ◽  
Author(s):  
Sobana Perumaram Rangarajan ◽  
Partha P Mukherjee ◽  
Yevgen Barsukov ◽  
Conner Fear ◽  
Gayatri Dadheech ◽  
...  

Safe and reliable fast charging of lithium-ion batteries is contingent upon the development of facile methods of detection and quantification of lithium plating. Among the leading candidates for online lithium plating detection is analysis of the voltage plateau observed during the rest or discharge phase ensuing a charge. In this work, an operando metric, ‘S-factor,’ is developed from electrochemical data to quantitatively analyze the severity of lithium plating over a range of charge rates and temperatures. An in-situ visualization method is employed to study the physical mechanisms and phase transitions occurring at the graphite electrode during the voltage plateau.


Author(s):  
Abdul Kabir ◽  
Jameel-Un Nabi

Abstract Radiative capture p+9Be → 10B+γ at energies bearing astrophysical importance is a key process for the spectroscopic study of 10B. In this work, we consider the radiative capture cross-section for the 9Be(p, γ)10B within the framework of the potential model and the R-matrix method for the multi-entrance channel cases. In certain cases, when the potential fails, therefore, the R-matrix approach is better to use for the description of partial components of the cross-section that have sharp or broad resonances. For all possible electric and magnetic dipole transitions, partial components of the astrophysical S-factor are computed. The computed value of the total S-factor at zero energy is consistent with the reported results.


Author(s):  
Lalit Kumar Sahoo ◽  
Chinmay Basu

The direct reaction component of the [Formula: see text]F([Formula: see text]) reaction at [Formula: see text][Formula: see text]keV is studied for the data that became very recently available. This component is significant in this work using the direct pickup model in the framework of the DWBA formalism and indicate the strong cluster structure of [Formula: see text]F. The direct component of astrophysical S-factor is calculated for [Formula: see text]F([Formula: see text]).


2021 ◽  
Vol 12 (2) ◽  
pp. 164-172
Author(s):  
Gudrun Kalmbach H.E.

The Planck and other natural numbers are used for units of forces. They arise also as weights of Gleason operators, defined by 3-dimensional spin-like base triples GF and their weigths. The spin lengths are the spin GF weights for instance. The measuring GF operator triples arise by projective duality from 1-dimensional force vectors in projective to R5 extended Hilbert space H4. Color charges are set as a separate force, using a G-compass (figure 2). For the universes evolution after a big bang several maps are introduced, mostly belonging to the gravity field quantum rgb-graviton. It presents the neutral color charge of nucleons. Orthogonal projections of H4, also in spiralic and angular form, central or stereographic projective maps belong to them. They project also the S³ factor of the strong interation geometry S³xS5 down to the SU(2) geometry S³ of the Hopf map. Fiber bundle maps are added also to S5 with the same fiber S1 to the base space CP² for nucleons and atomic kernels. In octonian coordinates, listed by indices, 01234567, there are three projections from the energy space 123456 of SI to complex quaternionic 2x2-matrix presentations of spacetime 1234, of CP² as 3456 and of GR with mass and rgb-gravitons 1256. GR and CP² are projected into 1234 as the universes spacetime, observable as bubbles for atoms and matter 3456 and GR potentials and actions about and for mass carrying systems 1256.


2021 ◽  
Author(s):  
Ines Sofia Calado Baptista ◽  
Vinodh Kandavalli ◽  
Vatsala Chauhan ◽  
Mohamed Nasurudeen Mohamed Bahrudeen ◽  
Bilena Lima de Brito Almeida ◽  
...  

Escherichia coli uses the ability of σ factors to recognize specific DNA sequences in order to quickly control large gene cohorts. While most genes respond to only one s factor, approximately 5% have dual s factor preference. The ones in significant numbers are ‘σ 70+38 genes’, responsive to σ 70 , which controls housekeeping genes, as well as to σ 38 , which activates genes during stationary growth and stresses. We show that σ 70+38 genes are almost as upregulated in stationary growth as genes responsive to σ 38 alone. Also, their response strengths to σ 38 are predictable from their promoter sequences. Next, we propose a sequence- and σ 38 level-dependent, analytical model of σ 70+38 genes applicable in the exponential, stationary, and in the transition period between the two growth phases. Finally, we propose a general model, applicable to other σ factors as well. This model can guide the design of synthetic circuits with sequence-dependent sensitivity and plasticity to transitions between the exponential and stationary growth phases.


2021 ◽  
pp. 136790
Author(s):  
Yasutaka Taniguchi ◽  
Masaaki Kimura
Keyword(s):  

2021 ◽  
pp. 136792
Author(s):  
V.V. Sargsyan ◽  
G.G. Adamian ◽  
N.V. Antonenko ◽  
H. Lenske
Keyword(s):  

2021 ◽  
Vol 104 (4) ◽  
Author(s):  
E. M. Tursunov ◽  
S. A. Turakulov ◽  
A. S. Kadyrov ◽  
L. D. Blokhintsev

2021 ◽  
pp. 114405
Author(s):  
Frank D. Mann ◽  
Adolfo G. Cuevas ◽  
Robert F. Krueger
Keyword(s):  

2021 ◽  
Vol 2 (9) ◽  
pp. 826-829
Author(s):  
Ercan Yildiz ◽  
Saniye Tekerek

In fusion reactors, radioactivity can be controlled by effective material selection. Material selection is always important for efficient conversion of radioactivity to electrical energy.The selection of structural materials provides more efficient use of these structural materials with the results obtained from nuclear reactions. Low activation materials not only high in structural material performance and longer life, but also minimize related problems. Iron is an important element in fusion reactor technologies and astrophysical applications. For this reason, we obtained the theoretical cross-section values of the 54Fe(α, n)57Ni reaction in the range of 5-15 MeV (Mega electron volt) in this study. TALYS 1.8 (nuclear model code system) and NON-SMOKER (computer code) were used for theoretical calculations. Astrophysical S-factor values describing reactions at low energies were also calculated. In addition, reaction rate values were calculated with TALYS 1.8 and compared with EXFOR (experimental nuclear reaction data).


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