PRESENTATION

Last Update 25/ 7/ 2025

in English/ in Esperanto/ in French/ in German/ in Italian/ in Portuguese


DIPLOMATIC RELATIONSHIP

On a matter of fact

Suggestion of the day
  • Brazil could consider if convenient to have diplomatic relationship with USA and Israel or not
Roberto Andrea M�ller
 
 
Study themes in multilanguages, illustrated with simulation programs, interaction or animation for group or individual educational activity. This mutidiscipline publication is frequently expanded. Its objective is to educate with participation of the interested person, in a dynamical way, with low cost, enabling wide, fraternal and constructive communication. With the increasing quality of Teleeducation due to general progress there is hope to contribute for a better life quality. The team received mail from people of several countries. We have attended and will continue to attend the users with pleasure and respect. Authors of selected collaborations may be invited by the team to publish in this space.

Table of subjects.
Presentation
Agronomy Lawn Inexpensive irrigation
Art Graphical Labels
Biochemistry Biodiversity Biodiversity with a glance
Biology Animal Fertilization
Chemistry Analytical Chromatography
Elemental organic analysis
Volumetric analysis, simulation
Crystallography 3 fold screw axis
4 fold inversion axis on tetrahedron
5 fold rotation axis absent in crystallography
Analysis of a mixture of minerals - simulation
Binary axis and reflection plane in stereographic projection
Bravais lattices
c2mm
c2mm Unit cell origin hunter
Conic sections under symmetry operators
Converting from spherical coordinates to stereographic projection
Crystal lattice and unit cell
Determination of unit cell
Elements of symmetry in action - animation
Elements of symmetry in action - cube game
Elements of symmetry in action - dodecahedron game
Elements of symmetry in action - icosahedron game
Elements of symmetry in action - octahedron game
Elements of symmetry in action - tetrahedron game
Ewald sphere and crystal measurements
Extinctions
Five classes in the cubic system
Five classes in the rhombohedral system
From tetrahedron to prism
Gnomonic projection
Improper symmetry axis
Miller indices
Miller indices - animation
Miller indices - cube game
Miller indices - octahedron game
Miller indices - rhombic dodecahedron game
Miller indices - tetrahedron game
Mirror plane
Mirror planes and Miller indices game - tetrahedron
Octahedral and tetrahedral hole
Orientations of the cube
p2gg
p2mm
Plane symmetry groups
Question on point group
Rotation axis in octahedron and Werner compounds
Rotation axis on tetrahedron and organic molecules
Rotation of a cube vertex
Rotation of objects about an arbitrary axis
Rotation of the parallel and stereographic projections of the cube
Rotation of the stereographic and parallel projection of the cube III
Seven faces in stereographic projection
Seven classes in the hexagonal system
Seven classes in the tetragonal system
Six elements of symmetry in seven orientations
Solid and aqueous sodium chloride, NaCl
Spherical projection of the octahedron
Stereographic projection
Stereographic projection of six polyhedra in different orientations
Straight line equations and symmetry elements
Symmetry, 2 fold axis
Symmetry, 2, 3 and 6 fold axis in benzene
Symmetry, 3 fold axis in the cube
Symmetry, 4 fold axis in the cube
Symmetry, 4 fold axis in the unit cell of gold
Symmetry elements and Miller indices game
Symmetry elements and Miller indices game - octahedron
Symmetry in art and in crystallography
Three classes in the monoclinic system
Three classes in the orthorhombic system
Twin crystals
Two classes in the triclinic system
Unit cell in hexagonal net
General Butane conformations
Density
Electrochemical cell
Ethane conformations
Oxidation and reduction
Resources of chemical-ICT: water, health and symmetry
Solid and liquid gold
Folklore Brazil Carnival
Other Varied Linear regression and statistics
Oblique and orthogonal systems study
Pocket calendar
Study of the oblique at all coordinate system and the orthogonal coordinate system
The Great Wall of China and the Great Higway of Love

Team:

Alexsandra Eliane de Souza

Claudinei Alves da Silva

Cl�vis Andrade Neves, D.S.

Ednardo Moreira Santos

Elson Santiago de Alvarenga, PhD.

M�rcio Rodrigues Pinto Albuquerque

Marisa Takayama

Paulo Gontijo Veloso de Almeida, D.S.

Roberto Andrea Muller, D.S., coordinator

The following persons contributed with support and suggestions for the progress of this work:

Antistica Sialino M�ller, Ant�nio Augusto Neves, Ant�nio Jacinto Demuner, Ant�nio Sim�es Silva, Ari M. Siqueira, Benjamim Gon�alves Milagres, Carlos Roberto Bellato, Carlos Sigueyuki Sediyama, C�lia Regina �lvares Maltha, Celso de Souza Lima, C�sar Reis, Cl�udio Ferreira Lima, Cl�udio Pereira Jord�o, Daniel M�ller, Dorila Pil�-Veloso, Edilson Costa de Oliveira, Edilton de Souza Barcellos, Eduardo Jaime Quir�s Batres, Efraim L�zaro Reis, Elisa Sialino M�ller, Elita Duarte Costa, Emmanuel Sialino M�ller, Evaldo Ferreira Vilela, Fabiano Pais dos Santos, Frederico Jos� Vieira Passos, German Enrique Cares Quevas, Gulab Newandram Jham, Jenna Seehafer, J�ao Sabino de Oliveira, Joel Ant�nio de Oliveira, Jos� Henrique de Oliveira, Jos� M�rio Braga Filho, Jos� Roberto da Silveira Maia, Jos� William Kimo, Julia Evergreen Keefer, Juliana Sialino M�ller, Katia M�ller, Lara M�ller, Luiz Aur�lio Raggi, Luiz Carlos Euclydes, Luiz Henrique Mendes da Silva, Luiz Cl�udio de Almeida Barbosa, Marcelo de Freitas Gama, Marcelo Sim�o, Marco T�lio Apolin�rio, Marco T�lio David das Neves, M�rcia Mendon�a C. dos Santos, M�rcio L�vio Pereira Pinto, Maria da Concei��o Aparecida Baltazar, Geraldo Caldeira Passos, Maria Eliana Lopes Ribeiro de Queiroz, Mary Ellen Nourse, Mayura Marques Magalh�es Rubinger, Michelini Lopes da Silva, Nilda de F�tima Ferreira Soares, Osvaldo Sergio F. de Carvalho, Paulo Ant�nio Maffia, Per Christian Br�athen, Ricardo Frederico Euclydes, S�rgio Augusto Sim�o, Steve McCarty, Suzete Aparecida Pereira Silve, Waldir Jos� Pinheiro Reis,