Optical Transformation Theory

A general approach to design near perfect invisible ground and free space cloaks is introduced in this paper. The proposed method which is based on the optical transformation theory, leads to homogeneous constitutive parameters for the cloaks without any singularities. Moreover, the single-step mapping process with linear relations achieves an uncomplicated designing process. Invisibility performance obtained by using this approach does not depend on the incident wave direction, also. The simplicity and design flexibility of the introduced approach with the homogeneity of extracted parameters greatly facilitate the design and fabrication processes of the both proposed ground and free space invisible cloaks. The numerical simulations prove the capability and universality of the proposed design approach.

Download Full-text

Electron Microscopic identification of Pre-B Lymphocytes in the Bone Marrow of a Patient with Chronic Myelocytic Leukemic in Blast Crisis

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100054352 ◽

1982 ◽

Vol 40 ◽

pp. 346-347

Author(s):

T. Mullin ◽

G. Yee ◽

M. Aheam ◽

J. Trujillo

Keyword(s):

Blast Crisis ◽

Immunoglobulin M ◽

Terminal Deoxynucleotidyl Transferase ◽

Transformation Theory ◽

Electron Microscopic ◽

Chemotherapeutic Sensitivity ◽

Microscopic Studies ◽

Hematopoietic Precursor ◽

Lymphoblastic Transformation ◽

B Lineage

There have been numerous reports in the current literature suggesting that hematopoietic precursor cells in some human chronic myelocytic leukemias (CML) undergo lymphoblastic transformation at the time of the acute blast crisis (BC) stage. The primary evidence offered in support of this transformation theory--lymphoblastic appearing morphology, increased terminal deoxynucleotidyl transferase (TdT) activity, and chemotherapeutic sensitivity to vincristine and prednisone--has been indirect, however, since these features may occur in nonlymphoid cells. More direct support for the Pre-B lineage of these cells has recently been provided by immunofluorescent light microscopic studies demonstrating the presence of intracytoplasmic immunoglobulin M (IgM) in these CML-BC cells.

Download Full-text

Situating conflict transformation theory, theory of negative and positive peace and human needs theory in pre and post-electoral violence dynamics in Zimbabwe

Ubuntu Journal of Conflict Transformation ◽

10.31920/2050-4950/2020/9n1a8 ◽

2020 ◽

Vol 9 (1) ◽

pp. 149-164

Author(s):

Felix Makonye ◽

Anna Bengesai

Keyword(s):

Conflict Transformation ◽

Theory Theory ◽

Transformation Theory ◽

Electoral Violence ◽

Human Needs ◽

Needs Theory ◽

Positive Peace

Download Full-text

Induction period of the crystallization of silver nitrate solutions in ethylene glycol

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19912142 ◽

1991 ◽

Vol 56 (10) ◽

pp. 2142-2147

Author(s):

Ivo Sláma

Keyword(s):

Ethylene Glycol ◽

Silver Nitrate ◽

Induction Period ◽

Glass Forming Ability ◽

Transformation Theory ◽

Concentration Region ◽

Glass Forming ◽

Temperature Transformation ◽

Silver Nitrate Solutions ◽

Nitrate Solutions

The dependence of the induction period of crystallization on supercooling was examined for the silver nitrate-ethylene glycol system over the concentration region of silver nitrate lome fraction of 0 to 0.12. Addition of AgNO3 to ethylene glycol was found to increase considerably the critical induction period of crystallization, although to a lesser extent than Ca(NO3)2, CaCl2, ZnCl2, LiCl and LiNO3 do. The effect of these salts on the critical induction period of crystallization in dimethylsulfoxide, dimethylformamide, dimethylacetamide and methanol was compared in terms of the solvent-rich composition limit of the glass-forming ability. By using the TTT(Time-Temperature-Transformation) theory, it has been deduced that the effect of the salts on the critical induction period of crystallization of ethylene glycol is probably due to the different dependences of viscosity on their concentration in ethylene glyco in the supercooling region.

Download Full-text