scholarly journals Classification of Positive Energy Representations of the Virasoro Group

2014 ◽  
Vol 2015 (18) ◽  
pp. 8620-8656 ◽  
Author(s):  
Karl-Hermann Neeb ◽  
Hadi Salmasian

A classification of particles is suggested based on a Ũ (12) symmetry scheme. This is a relativistic generalization of the U (6) symmetry. The spin 1 2 and 3 2 baryons are each described by 20-component spinors which satisfy Bargmann-Wigner equations and belong to the 3̲6̲4̲ representation of the Ũ (12) group while the vector and p. s. mesons belong to the representation 1̲4̲3̲. The procedure for writing fully relativistic form factors is worked out in detail for baryon-meson and meson-meson cases. The new results are the following: (1) F C ( q 2 ) F M ( q 2 ) ∝ 1 + q 2 < 2 μ > m , Where F c and F M are (Sachs) electromagnetic form factors. (2) μ D = 1 + 2 m /< μ >, where < μ > is the mean mass of the 1 - multiplet and m the nucleon mass. (3) μ ρ,K* = 3. The conventional U (6) results can be recovered by projecting to the positive energy subspace in the rest system for each particle. To any irreducible representation of the U (6) there corresponds one irreducible representation of Ũ (12) and vice versa.


2018 ◽  
Vol 1 (1) ◽  
pp. 15-18
Author(s):  
Siti Nur Aini ◽  
Ahmad Syarifuddin

Scientific writing aims to find out the intentions and sincerity correctly, efforts must be made to improve the spiritual quality of students. This research is a qualitative analysis research with case study method. Data collection techniques used are observation, interviews, and documentation. Data sources came from the Jagad Alimussirry Student Boarding School. The results of the analysis show that something done with intention and sincerity only gives to God so that it becomes a perfect charity from one's worship. Before charity must be careful so that the charity that is done can be accepted by God. People who purify the heart of all defilements by avoiding evil, maintain honesty in words and deeds, their hearts will become clean, can emit positive energy and can meet Allah SWT.


2019 ◽  
Vol 31 (6) ◽  
pp. 1791-1795
Author(s):  
Todorka Malcheva

Playing Bulgarian folk dances- horoes, is a fascinating, emblematic and centuries’ years old tradition. The folk dance is an important part both from different holidays and from the everyday life of Bulgarians. This is one of the most significant and fascinating folklore activities, making Bulgaria famous all over the world. We can define Bulgarian national dance as an exceptionally beautiful art. This is a skill that makes people happy and energetic. Folk dances reveal the temper of our nation. At the same time, in the rhythm of the dance lives the collective spirit, which attributes to feeling joy, delight and rest when dancing with other people.That is why Bulgarian folk dance is not only a way to feel happy. It gathers, gives strength, teaches, expresses and above all- gathers the people of Bulgaria. It is also a way to be closer to nature. That is why Bulgarian folk dance is strength for the spirit. It is a magic for the soul- chases away tiredness and bad mood by generating positive energy and releasing the discomfort and stress. The following text presents classification of the Bulgarian folk dances- horoes according to different and various criteria. They are divided into groups according to: the performers, the type of dancing chain, metrorhythm, customs, folklore regions, tempo and others. The following resume confirms the variety and wealth of Bulgarian folk dance. The text also defines the dance as a magic that preserved our spirit and our nation throughout our history. It is not only a magic that is still alive, but a magic that is actively represented by different dancing formations nowadays. Bright costumes, thrilling music and energetic horoes – they always provoke emotions and loud applause among native and foreign public. The charming nature of Bulgarian dances is the reason why they are still alive and have been passed from one generation to the other. In this way, this centuries’ years old tradition will be preserved for the future generations and the Bulgarian shall never be forgotten.


1966 ◽  
Vol 24 ◽  
pp. 21-23
Author(s):  
Y. Fujita

We have investigated the spectrograms (dispersion: 8Å/mm) in the photographic infrared region fromλ7500 toλ9000 of some carbon stars obtained by the coudé spectrograph of the 74-inch reflector attached to the Okayama Astrophysical Observatory. The names of the stars investigated are listed in Table 1.


Author(s):  
Gerald Fine ◽  
Azorides R. Morales

For years the separation of carcinoma and sarcoma and the subclassification of sarcomas has been based on the appearance of the tumor cells and their microscopic growth pattern and information derived from certain histochemical and special stains. Although this method of study has produced good agreement among pathologists in the separation of carcinoma from sarcoma, it has given less uniform results in the subclassification of sarcomas. There remain examples of neoplasms of different histogenesis, the classification of which is questionable because of similar cytologic and growth patterns at the light microscopic level; i.e. amelanotic melanoma versus carcinoma and occasionally sarcoma, sarcomas with an epithelial pattern of growth simulating carcinoma, histologically similar mesenchymal tumors of different histogenesis (histiocytoma versus rhabdomyosarcoma, lytic osteogenic sarcoma versus rhabdomyosarcoma), and myxomatous mesenchymal tumors of diverse histogenesis (myxoid rhabdo and liposarcomas, cardiac myxoma, myxoid neurofibroma, etc.)


Author(s):  
Irving Dardick

With the extensive industrial use of asbestos in this century and the long latent period (20-50 years) between exposure and tumor presentation, the incidence of malignant mesothelioma is now increasing. Thus, surgical pathologists are more frequently faced with the dilemma of differentiating mesothelioma from metastatic adenocarcinoma and spindle-cell sarcoma involving serosal surfaces. Electron microscopy is amodality useful in clarifying this problem.In utilizing ultrastructural features in the diagnosis of mesothelioma, it is essential to appreciate that the classification of this tumor reflects a variety of morphologic forms of differing biologic behavior (Table 1). Furthermore, with the variable histology and degree of differentiation in mesotheliomas it might be expected that the ultrastructure of such tumors also reflects a range of cytological features. Such is the case.


Author(s):  
Paul DeCosta ◽  
Kyugon Cho ◽  
Stephen Shemlon ◽  
Heesung Jun ◽  
Stanley M. Dunn

Introduction: The analysis and interpretation of electron micrographs of cells and tissues, often requires the accurate extraction of structural networks, which either provide immediate 2D or 3D information, or from which the desired information can be inferred. The images of these structures contain lines and/or curves whose orientation, lengths, and intersections characterize the overall network.Some examples exist of studies that have been done in the analysis of networks of natural structures. In, Sebok and Roemer determine the complexity of nerve structures in an EM formed slide. Here the number of nodes that exist in the image describes how dense nerve fibers are in a particular region of the skin. Hildith proposes a network structural analysis algorithm for the automatic classification of chromosome spreads (type, relative size and orientation).


Author(s):  
Jacob S. Hanker ◽  
Dale N. Holdren ◽  
Kenneth L. Cohen ◽  
Beverly L. Giammara

Keratitis and conjunctivitis (infections of the cornea or conjunctiva) are ocular infections caused by various bacteria, fungi, viruses or parasites; bacteria, however, are usually prominent. Systemic conditions such as alcoholism, diabetes, debilitating disease, AIDS and immunosuppressive therapy can lead to increased susceptibility but trauma and contact lens use are very important factors. Gram-negative bacteria are most frequently cultured in these situations and Pseudomonas aeruginosa is most usually isolated from culture-positive ulcers of patients using contact lenses. Smears for staining can be obtained with a special swab or spatula and Gram staining frequently guides choice of a therapeutic rinse prior to the report of the culture results upon which specific antibiotic therapy is based. In some cases staining of the direct smear may be diagnostic in situations where the culture will not grow. In these cases different types of stains occasionally assist in guiding therapy.


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