scholarly journals Question of Parity Non-Conservation in Weak Interactions

2021 ◽  
Author(s):  
zuodong sun
Keyword(s):  
Conservation Law ◽  
Weak Interactions ◽  
Mirror Image ◽  
Physical Significance ◽  
Β Decay ◽  
Membrane Area ◽  
Experimental Scheme ◽  
Parity Conservation ◽  
Wise Choice ◽  
The Right

In order to reasonably explain the phenomenon of cell bioelectricity, we proposed the conservation law of cell membrane area, established the ion inequality equation, and therefore paid attention to the mystery of "θ-τ". We researched and analyzed the "θ-τ" mystery, discussed the parity non-conservation in weak interactions, suggested possible experiments to test the parity non-conservation in weak interactions, and gave our research and analysis conclusions: The experimental scheme proposed by C. N. Yang and T. D. Lee in the hypothesis cannot be used as a positive evidence of whether the weak interaction parity is conserved, nor can it directly answer whether θ and τ in the "θ-τ" mystery are the same particle; The Co60 β decay experiment such as C. S. Wu is a pseudo-mirror experiment, and it has not overturned the so-called "parity conservation law" or proved the "parity non-conservation" in weak interactions; The "θ-τ" mystery is a "man-made" mystery. θ and τ are two different particles, which may be the result of the same precursor particle being divided into two. Parity conservation or non-conservation under mirror image has no physical significance. The work of C. N. Yang, T. D. Lee, C. S. Wu et al. have brought quantum physicists from the "Little black house" to the "Big black house" or "smaller black house". The right and wise choice is to go back through "the door that came in". With the development of science today, it is time for some contents to reform from the bottom.

ON PARITY CONSERVATION AND THE QUESTION OF THE 'MISSING' (RIGHT-HANDED) NEUTRINO

1993 ◽  
Vol 08 (11) ◽  
pp. 1011-1020 ◽  
Author(s):  
A. O. BARUT ◽  
G. ZIINO
Keyword(s):  
Field Theory ◽  
Mirror Symmetry ◽  
Mirror Image ◽  
Dirac Field ◽  
Left Handed ◽  
Neutrino Field ◽  
Parity Conservation ◽  
Two Component ◽  
The Right

The neutrino problem is set anew in the light of a reformulation of the Dirac field theory that provides a natural account for the effect commonly interpreted as 'P-violation', and restores P-mirror symmetry. A two-component (left-handed) neutrino field is automatically derived, whose P-mirror image does not correspond to a 'missing' particle but is the (right-handed) antineutrino field.

Microsurgically generated discontinuities provoke heritable changes in cellular handedness of a ciliate, Stylonychia mytilus

Development ◽  
1991 ◽  
Vol 111 (2) ◽  
pp. 337-356
Author(s):  
X.B. Shi ◽  
Z.I. Qiu ◽  
W. He ◽  
J. Frankel
Keyword(s):  
Large Scale ◽  
Mirror Image ◽  
The Other ◽  
Left Edge ◽  
Left Handed ◽  
Specific Manner ◽  
The Right ◽  
Anteroposterior Polarity ◽  
Posterior Anterior ◽  
Stylonychia Mytilus

Stylonychia mytilus is a dorsoventrally flattened ciliate with compound ciliary structures arranged in a specific manner on the cell surface. In mirror-image (MI) doublets of this ciliate, two nearly complete sets of ciliary structures are arrayed side-by-side, one in a normal or ‘right-handed’ (RH) arrangement, the other in a reversed or ‘left-handed’ (LH) arrangement. MI-doublets exist in two forms, one with the RH component on the right, the LH component on the left, and feeding structures near the center (‘buccal-adjoining MI-doublet’); the other with the RH component on the left, the LH component on the right, and feeding structures on the lateral edges (‘buccal-opposing MI-doublet’). We describe an operation that can generate either type of MI-doublet. This operation interchanges large anterior and posterior regions of the cell, transposing the original posterior region anteriorly (P—A) and the original anterior region posteriorly (A—P), while retaining the original anteroposterior polarity of each region. Two sets of new ciliary structures then are formed in mirror-image arrangement, with the set in the P—A region oriented normally and the set in the A—P region undergoing a reversal of polarity along its anteroposterior axis. This sometimes creates end-to-end MI forms, but more commonly produces side-by-side MI-doublets through a folding together of the P—A and A—P regions. This folding occurs because one lateral edge of the cell had been removed during the operation; if the left edge was removed, the complex folds to the left and forms a buccal-adjoining MI-doublet, whereas if the right edge was removed, the complex folds to the right and forms a buccal-opposing MI-doublet. Both types can reorganize and later divide true-to-type, although the ‘buccal-opposing’ type is by far the more stable of the two. The generation of mirror-image forms is dependent on the prior abnormal juxtaposition of regions from opposite ends of the cell, and involves a coordinated respecification of large-scale organization. We interpret this response to be a consequence of intercalation of missing intervening positional values in the zone of posterior-anterior abutment.

A New Highway Safety Model Based on Cellular Automata

2014 ◽  
Vol 989-994 ◽  
pp. 2340-2343
Author(s):  
Li Xing Li
Keyword(s):  
Cellular Automata ◽  
Energy Conservation ◽  
Traffic Safety ◽  
Conservation Law ◽  
Highway Safety ◽  
Traffic Density ◽  
New Model ◽  
The Road ◽  
The Right ◽  
Energy Conservation Law

With the growth of the total mileage of highway. There is great importance in studying highway safety. At the present time, there are little research on traffic safety with the consideration of the Keep-Right-Except-To-Pass Rule, which requires drivers to drive in the right-most lane unless they are passing another vehicle. Based on Cellular Automata, this paper constructs a new model of highway safety with the consideration of the particular Rule. To evaluate the safety of the road, the model proposes a new index based on energy conservation law. After the simulation, the result shows the best traffic density to balance the safety and traffic flux is 20.1133veh/km.

Effect of neonatal denervation of hindlimb digits on the somatotopic organization of lumbar spinocervical tract neurons in the cat

1991 ◽  
Vol 66 (3) ◽  
pp. 762-776 ◽  
Author(s):  
P. Wilson ◽  
P. J. Snow
Keyword(s):  
Dorsal Horn ◽  
Receptive Fields ◽  
Large Degree ◽  
Mirror Image ◽  
Light Touch ◽  
Single Digit ◽  
Somatotopic Organization ◽  
The Right ◽  
Alpha Chloralose ◽  
Neonatal Denervation

1. The effect of transection and ligation of the digital nerves of either one (toe 3) or two (toe 3 and toe 4) hindpaw digits, in the first postnatal week, on the tactile receptive fields (RFs) of spinocervical tract (SCT) neurons was studied in adult, alpha-chloralose-anesthetized cats. Immediately before recording, the digital nerves of the corresponding digit(s) of the opposite, intact hindpaw were transected, and the neonatally lesioned digital nerves were recut proximal to the transection neuroma. 2. In the medial part of the dorsal horn at the L6-L7 level, the digits of the hindlimb are represented in the RFs of SCT cells in a precise axial sequence from the most medial digit (toe 2) rostrally to the most lateral digit (toe 5) caudally. Acute denervation of one or two digits in the adult produced an area in the ipsilateral dorsal horn in which SCT cells lacked any RFs. When acute denervation was restricted to a single digit, the unresponsive region of dorsal horn was approximately 3 mm in length, and when two digits were denervated the unresponsive zone was approximately 6 mm long. Because the representation of the toes of the left hindpaw is a mirror image of that of the right, the rostrocaudal extent and position of the region of unresponsive SCT cells was used to assess the location of the borders of the chronically deprived region on the opposite side of the cord. 3. In all cats examined after neonatal denervation of toe 3, most (89%) of the SCT cells sampled within the chronically deprived toe 3 representation had RFs. These RFs were either on toe 2 (44%) or toe 4 (18%), and a large proportion of cells (38%) had multiple RFs with components on both toe 2 and toe 4. In most cases the cells fired briskly to displacement of hairs or light touch of the skin within these RFs. SCT cells with a RF on toe 2 and/or toe 4 were found throughout the whole 3-mm length of the chronically deprived toe 3 region, but cells with a RF on toe 2 were more commonly found than cells with a RF on toe 4 at axial distances greater than or equal to 1.5 mm from the boundary of the normal representations of the respective digit. 4. After chronic, neonatal denervation of both toe 3 and toe 4, 59% of SCT cells sampled overall had RFs, but there was a large degree of interanimal variation in the proportion of unresponsive neurons.(ABSTRACT TRUNCATED AT 400 WORDS)

Question of Parity Conservation in Weak Interactions

1956 ◽  
Vol 104 (1) ◽  
pp. 254-258 ◽  
Author(s):  
T. D. Lee ◽  
C. N. Yang
Keyword(s):  
Weak Interactions ◽  
Parity Conservation

Female over male or left over right: solving a classificatory puzzle among the OvaHimba

Africa ◽  
1996 ◽  
Vol 66 (3) ◽  
pp. 327-348 ◽  
Author(s):  
David P. Crandall
Keyword(s):  
Mirror Image ◽  
Symbolic System ◽  
Apparent Contradiction ◽  
Ritual Space ◽  
The Right

This article puts forward a resolution to a curious circumstance, namely, why the left, and not the right, appears to be pre-eminent among the Himba. Himba arrange gendered, domestic and ritual space, their own bodies in ritual contexts and, to an extent, time strongly in favour of the left. The fact that in their language ‘left’ connotes weakness while ‘right’ connotes strength adds to the puzzle. It is argued that, to understand this apparent contradiction of the near-universal classificatory ascendancy of right over left, one must assess the Himba dual symbolic system while drawing upon the principle of symbolic parallax which allows a single referent, in this case the sacred ancestral fire, to be viewed from differing spatial perspectives. By following this procedure the puzzle is resolved, as the human direction from which the primary referent is viewed is merely the mirror image of a transcendant view.

Evidence for a Player's Position Advantage in a Videogame

1992 ◽  
Vol 74 (2) ◽  
pp. 547-554 ◽  
Author(s):  
R. Michael Brown ◽  
Norma L. Brown ◽  
Kathy Reid
Keyword(s):  
University Students ◽  
Human Performance ◽  
Mirror Image ◽  
Preliminary Observation ◽  
Successful Performance ◽  
Ping Pong ◽  
The Right ◽  
Male University Students

An understanding of videogame performance may increase our knowledge of human performance generally and clarify ways in which performance can be enhanced. Few studies to date have examined factors that may contribute to successful performance in videogames. The hypothesis, based on preliminary observation, was that the position one occupies—right or left—affects performance in a television ping-pong game (“pong”). Analysis showed that right-handed male university students ( n = 40) performed better when seated on the right than on the left. The right-side advantage was maintained even when subjects were presented a mirror-image of the game, indicating that characteristics of the apparatus were not solely responsible for the effect. Perhaps compatibility of certain display and response components in the pong game accounted for the advantage of the player's position.

Situs Inversus Totalis

2001 ◽  
Vol 20 (1) ◽  
pp. 63-67 ◽  
Author(s):  
Janie Spoon
Keyword(s):  
Situs Inversus ◽  
Vena Cava ◽  
Situs Inversus Totalis ◽  
Mirror Image ◽  
The Body ◽  
Radiographic Examination ◽  
Internal Organs ◽  
Radiographic Findings ◽  
Situs Solitus ◽  
The Right

EXTERNALLY, THE HUMAN BODY appears symmetric; if a line is drawn down the middle of the body, each side appears identical. However, this is not true of the internal anatomy. For example, there is one heart, which lies in the left chest, one liver, in the right abdomen, and one stomach, in the left abdomen. The term situs refers to the position or location of an organ, specifically, the position of the atria and abdominal viscera in relation to the midline of the body.1 There are three types of situs: solitus, inversus, and ambiguous. Situs solitus refers to the normal arrangement of organs, with the right atrium, liver, gallbladder, trilobed lung, and inferior vena cava on the right side and the left atrium, stomach, spleen, bilobed lung, and descending aorta on the left side (Figures 1–3). Situs inversus totalis refers to a mirror image reversal of the normal position of the internal organs (Figures 4 and 5). 1 The incidence of situs inversus totalis is 1 in every 8,000 to 25,000 births, and the condition is most often diagnosed by radiographic examination.2Situs ambiguous, often referred to as heterotaxia, is the random arrangement of the internal organs and is associated with splenic abnormalities and congenital heart disease.3 The purpose of this column is to discuss the embryology, pathophysiology, and diagnosis of situs inversus totalis and to review a case study with radiographic findings.

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