scholarly journals Heavy Particle Accompanied Fission of 284Og - A Statistical Model Study

2021 ◽  
Vol 9 (1) ◽  
pp. 15-18
Author(s):  
S. Subramanian ◽  
S. Selvaraj
Keyword(s):  
Statistical Model ◽  
Structural Characteristics ◽  
Heavy Particle ◽  
Ternary Fission ◽  
Excitation Energies ◽  
The Third ◽  
Model Study ◽  
Yield Values ◽  
Symmetric Fission ◽  
Asymmetric Fission

The structural characteristics of SHN can be investigated through the decay of SHN. In the present work ternary fission of SHN 284Og for two proton magic fixed third fragment 48Ca and 68Ni is studied at three different excitation energies 20, 35 and 50 MeV. Interestingly, 169Yb + 67Ni + 48Ca is having larger yield values and hence it is the most favoured way of fragmentation at intermediate excitation energy 35 MeV. It is observed that, asymmetric fission is favoured over symmetric fission at all the excitation for the third fragment 48Ca. Asymmetric fission is the most favoured with the fragment combination 148Sm + 68Ni + 68Ni for fixed A3 = 68Ni at all the excitations. Unlike the Ca third fragment, near symmetric fission is also favoured with 113Ag + 103Tc + 68Ni for A3 = 68Ni at all the three excitation energies.

Asymmetric crypt fission in sessile serrated lesions

2020 ◽  
pp. jclinpath-2020-207008 ◽  
Author(s):  
Carlos A Rubio ◽  
Peter T Schmidt
Keyword(s):  
Somatic Mutations ◽  
Colon Mucosa ◽  
Normal Colon ◽  
Normal Colon Mucosa ◽  
Crypt Fission ◽  
Tumour Suppressor Protein ◽  
Serrated Lesions ◽  
Symmetric Fission ◽  
Proliferating Cell ◽  
Asymmetric Fission

ObjectiveSessile serrated lesions without dysplasia (SSL-ND) are epitomised by dilated crypts with epithelial serrations and architectural distortions portraying boot-shapes, L-shapes or inverted-T shapes. Recently, crypts in asymmetric fission were detected in SSL-ND. The purpose was to assess the frequency of crypts in asymmetric fission in a cohort of SSL-ND.MethodsThe frequency of crypts in fission was assessed in 60 SSL-ND, the distribution of cell proliferation in 48 SSL-ND and the expression of maspin, a tumour-suppressor protein, in 29 SSL-ND.ResultsOut of the 60 SSL-ND, 40 (66.7%) showed crypts in fission: 39 (65%) SSL-ND had crypts in asymmetric fission and one SSL-ND (1.7%), in symmetric fission (p<0.05). Of 1495 crypts recorded in the 60 SSL-ND, 73 (4.9%) were in asymmetric fission but only one (0.06%), in symmetric fission (p<0.05). Out of the 48 Ki67-immunostained SSL-ND,15 (31%) showed randomly distributed proliferating cell-domains. All 29 SSL-ND revealed maspin-upregulation (including crypts in asymmetric and symmetric fission). In contrast, the normal colon mucosa showed occasional single crypts in symmetric fission, proliferating cell-domains limited to the lower thirds of the crypts, absence of crypts in asymmetric fission and remained maspin negative.ConclusionsSSL-ND thrive with crypts in asymmetric fission displaying randomly distributed proliferating cell-domains and maspin-upregulation. These histo-biological aberrations disclose pathological cryptogenesis and suggest possibly unfolding somatic mutations in SSL-ND. The present findings may open new vistas on the parameters pertinent to the susceptibility of SSL-ND to develop dysplasia and carcinoma.

Ternary Fission Mass Distributions of Superheavy Nuclei Within a Statistical Model

2020 ◽  
Vol 51 (1) ◽  
pp. 136-143
Author(s):  
S. Subramanian ◽  
M. T. Senthil Kannan ◽  
S. Selvaraj
Keyword(s):  
Statistical Model ◽  
Superheavy Nuclei ◽  
Ternary Fission ◽  
Mass Distributions

Relativistic compact effective potentials and efficient, shared-exponent basis sets for the third-, fourth-, and fifth-row atoms

1992 ◽  
Vol 70 (2) ◽  
pp. 612-630 ◽  
Author(s):  
Walter J. Stevens ◽  
Morris Krauss ◽  
Harold Basch ◽  
Paul G. Jasien
Keyword(s):  
Atomic Orbital ◽  
Basis Sets ◽  
Excitation Energies ◽  
Effective Potentials ◽  
Hartree Fock ◽  
The Third ◽  
Atomic Excitation ◽  
Core Electrons ◽  
Atomic Wavefunctions ◽  
Molecular Calculations

Relativistic compact effective potentials (RCEP), which replace the atomic core electrons in molecular calculations, have been derived from numerical Dirac–Fock atomic wavefunctions using shape-consistent valence pseudo-orbitals and an optimizing procedure based on an energy-overlap functional. Potentials are presented for the third-, fourth-, and fifth-row atoms of the Periodic Table (excluding the lanthanide series). The efficiency of molecular calculations is enhanced by using compact Gaussian expansions (no more than three terms) to represent the radial components of the potentials, and energy-optimized, shared-exponent, contracted-Gaussian atomic orbital basis sets. Transferability of the potentials has been tested by comparing calculated atomic excitation energies and ionization potentials with values obtained from numerical relativistic Hartree–Fock calculations. For the alkali and alkaline earth atoms, core polarization potentials (CPP) have been derived which may be added to the RCEP to make possible accurate molecular calculations without explicitly including core-valence correlating configurations in the wavefunction. Keywords: model potentials, effective core potentials, transition metals, relativistic calculations.

“Premit” System for Space Reticulated Structures

2003 ◽  
Vol 18 (1) ◽  
pp. 61-72
Author(s):  
Vincenzo Dipaola ◽  
Giuseppe Prete
Keyword(s):  
Static Analysis ◽  
Structural Characteristics ◽  
Parametric Modelling ◽  
Structural Components ◽  
Structural Process ◽  
The Third ◽  
Application Potential ◽  
Design Requirements ◽  
Technical Solutions

This is the third of three papers where we present the application potential of an original structural process for steel space grids, named PREMIT System. Here we explain the geometrical and structural characteristics of the welded version of the proposed System. Moreover we carry out the static analysis of structural components and we present a parametric modelling. Finally a codification and an inventory of technical solutions, useful to satisfy the design requirements of a wide applicative case study, are proposed. In the Appendix we present two System's variants, valid for both the bolted and the welded versions, with the aim to achieve appreciable economies in terms of materials and manufacturing.

scholarly journals Anti-phosphocholine hybridoma antibodies. I. Direct evidence for three distinct families of antibodies in the murine response

1981 ◽  
Vol 153 (2) ◽  
pp. 352-364 ◽  
Author(s):  
JL Claflin ◽  
S Hudak ◽  
A Maddalena
Keyword(s):  
Binding Site ◽  
Isoelectric Focusing ◽  
Direct Evidence ◽  
Structural Characteristics ◽  
Site Specificity ◽  
The Third ◽  
Myeloma Proteins ◽  
Remarkable Degree ◽  
Serological Studies

Biochemical and serological studies were performed on more than 400 anti- phosphocholine (PC) hybridoma proteins (HP) derived from six strains of mice; 26 of these HP were examined in detail. All HP possessed specificity for PC, and all those tested contained an H-chain idiotypic determinant, V(H)-PC, which is shared by PC-binding myeloma proteins (BMP) and anti-PC antibodies. Among the HP, three well-defined and distinct families that correlated well with previous studies on serum anti-PC antibodies were identified. The largest group shared idotypic determinants, an L-chain isoelectric focusing (IEF) pattern, and a binding site specificity with the PC-BMP, T15. Using the same criteria, a second group was found to be strikingly similar to another PC-BMP, M603. The third group possessed an idiotypic determinant and an L-chain IEF profile similar to M511, but differences in binding site specificities were observed among the HP. The latter two groups contained members whose L-chain IEF profiles were not identical to other members of that group. Thus, among strains there is a remarkable degree of conservation among responding anti-PC antibodies, in both the kinds of anti-PC families that exist and the immunochemical and structural characteristics of various members within a family. Differences in at least one parameter were observed in each family, demonstrating that even a relatively restricted response is heterogeneous. However, this diversity seems to operate within certain constraints.

The Principle and Calibration of the Third Gear Flow-Meter

2013 ◽  
Vol 397-400 ◽  
pp. 1713-1717
Author(s):  
Jun Zhang ◽  
Meng Meng Niu ◽  
Hong Mei Tang ◽  
Xian Hua Li ◽  
Cun Ren Tang
Keyword(s):  
Measurement Accuracy ◽  
Structural Characteristics ◽  
Developed Countries ◽  
Flow Meter ◽  
Typical Structure ◽  
The Third ◽  
System Pressure ◽  
Working Principle ◽  
The Developed Countries ◽  
The Stability

At present, the domestic development of the gear flow-meter is far behind the developed countries, especially in the micro gear flow-meter. This paper proposes a typical structure named the third gear flow-meter. The structural characteristics and working principle of the third gear flow-meter was introduced in detail, the prototype of the third gear flow-meter was designed and processed, and the calibration tests and pressure experiments of the third gear flow-meter prototype was made at last. We can draw that the three gear flow-meter can be used in hydraulic system pressure range is less than 25Mpa, the flow rate was 0.15~0.2m3/h can meet the high requirements of the stability of measurement, and the measurement accuracy in the whole flow range is 0.2 class. This article provides a reliable experimental data for the design of the micro gear flow-meter.

BINARY AND TERNARY FISSION WITHIN THE STATISTICAL MODEL

2008 ◽  
Vol 17 (10) ◽  
pp. 2014-2019 ◽  
Author(s):  
GURGEN G. ADAMIAN ◽  
ALEXANDER V. ANDREEV ◽  
NIKOLAI V. ANTONENKO ◽  
WERNER SCHEID
Keyword(s):  
Statistical Model ◽  
Nuclear Fission ◽  
Binary Fission ◽  
Ternary Fission ◽  
Scission Point ◽  
Fission Fragments ◽  
Charge Distributions

The binary and ternary nuclear fission are treated within the statistical model. At the scission point we calculate the potentials as functions of the deformations of the fragments in the dinuclear model. The potentials give the mass and charge distributions of the fission fragments. The ternary fission is assumed to occur during the binary fission.

On the nuclear mass parameter in asymmetric fission

1977 ◽  
Vol 55 (22) ◽  
pp. 1972-1975 ◽  
Author(s):  
C. T. Trinh ◽  
R. C. Sharma
Keyword(s):  
Mass Parameter ◽  
Nuclear Fission ◽  
Nuclear Mass ◽  
Schrödinger’S Equation ◽  
Symmetric Fission ◽  
Schrödinger's Equation ◽  
Asymmetric Fission

The nuclear fission mass parameter is derived by solving Schrödinger's equation under adiabatic assumption for a pear-shaped asymmetric potential. It is also concluded that asymmetric fission proceeds faster than symmetric fission.

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