WordNet

affecting or undertaken by two parties; "a bilateral agreement between the United States and Japan"
having identical parts on each side of an axis (同)isobilateral, bilaterally symmetrical, bilaterally symmetric
having two sides or parts (同)two-sided
toward or on the right; also used figuratively; "he looked right and left"; "the party has moved right"
(frequently plural) the interest possessed by law or custom in some intangible thing; "mineral rights"; "film rights"
anything in accord with principles of justice; "he feels he is in the right"; "the rightfulness of his claim" (同)rightfulness
a turn toward the side of the body that is on the south when the person is facing east; "take a right at the corner"
the hand that is on the right side of the body; "he writes with his right hand but pitches with his left"; "hit him with quick rights to the body" (同)right_hand
those who support political or social or economic conservatism; those who believe that things are better left unchanged (同)right wing
an abstract idea of that which is due to a person or governmental body by law or tradition or nature; "they are endowed by their Creator with certain unalienable Rights"; "Certain rights can never be granted to the government but must be kept in the hands
location near or direction toward the right side; i.e. the side to the south when a person or object faces east; "he stood on the right"
make reparations or amends for; "right a wrongs done to the victims of the Holocaust" (同)compensate, redress, correct
correct in opinion or judgment; "time proved him right" (同)correct
exactly; "he fell flop on his face" (同)flop
an interjection expressing agreement (同)right on
intended for the right hand; "a right-hand glove" (同)right-hand
(of the side of cloth or clothing) facing or intended to face outward; "the right side of the cloth showed the pattern"; "be sure your shirt is right side out"
being or located on or directed toward the side of the body to the east when facing north; "my right hand"; "right center field"; "a right-hand turn"; "the right bank of a river is the bank on your right side when you are facing downstream"
completely; "she felt right at home"; "he fell right into the trap"
having the axis perpendicular to the base; "a right angle"
immediately; "she called right after dinner"
in conformance with justice or law or morality; "do the right thing and confess"
in or into a satisfactory condition; "things are right again now"; "put things right"
of or belonging to the political or intellectual right
precisely, exactly; "stand right here!"
put in or restore to an upright position; "They righted the sailboat that had capsized"
regain an upright or proper position; "The capsized boat righted again"
toward or on the left; also used figuratively; "he looked right and left"; "the political party has moved left"
a turn toward the side of the body that is on the north when the person is facing east; "take a left at the corner"
the hand that is on the left side of the body; "jab with your left" (同)left_hand
those who support varying degrees of social or political or economic change designed to promote the public welfare (同)left wing
location near or direction toward the left side; i.e. the side to the north when a person or object faces east; "she stood on the left"
intended for the left hand; "I rarely lose a left-hand glove" (同)left-hand
being or located on or directed toward the side of the body to the west when facing north; "my left hand"; "left center field"; "the left bank of a river is bank on your left side when you are facing downstream"
of or belonging to the political or intellectual left
connect or secure to; "They rigged the bomb to the ignition"
formation of masts, spars, sails, etc., on a vessel (同)rigging
gear (including necessary machinery) for a particular enterprise
manipulate in a fraudulent manner; "rig prices" (同)manipulate
arrange the outcome of by means of deceit; "rig an election" (同)set_up
equip with sails or masts; "rig a ship" (同)set, set_up
balance among the parts of something (同)proportion
(mathematics) an attribute of a shape or relation; exact reflection of form on opposite sides of a dividing line or plane (同)symmetricalness, correspondence, balance

PrepTutorEJDIC

両側のある,左右同形の / 双方の,二派の / (おもに法律で)相互に義務を負う,双務的な
《名試の前にのみ用いて》『右の』,右側の / 《しばしば『R-』》(政治上)『右派の』,保守的な / 〈U〉《the~》『右』,右側,右方 / 〈C〉『右手』(right hand) / 〈U〉《集合的に》《しばしばthe R-》(政治上の)右派,保守派 / 〈C〉(野球の)右翼(right field) / 『右に』,右側に,右方に
《補語にのみ用いて》(道徳的に)『正しい』,正当な,正義の(just) / (人,人の判断・意見などが)『間偉いのない』,正しい(correct) / (事実に合って)『正しい』,正確な / 適切な,ぴったりの / (精神が)健全な,まともな;(心身が)健康な / 表の,正面の / 〈U〉(道徳的な)『正しさ』,正義;正しい行い / 〈C〉〈U〉(法律上・道徳上の)権利 / 〈U〉〈C〉《複数形で》(政治的・社会的な)人権,権利 / 《話》『まっすぐに』;まともに(directly) / 《話》『きっかり』,ちょうど(exactly) / 正確に,間違いなく(correctly) / (道徳的に)正しく,公正に / すっかり,完全に(completely);ずっと(all the way) / 適切に,ふさわしく;都合よく,うまく / 《おもに米話》すぐに,ただちに / 《特定の称号に付けて》非常に(very) / …‘を'正しい位置(状態)に戻す,立ち直らせる,整とんする / 〈誤りなど〉‘を'正す
leaveの過去・過去分詞
《名詞の前にのみ用いて》『左の』,左方の / 《しばしばl-》(政治上の)左翼の,左派の,革新派の / 左に,左方に / 《通例 the ~》『左』,左方,左側 / 《しばしばthe L-》左翼の政党(団体),左派 / 〈U〉(野球で)左翼,レフト(left field);〈C〉左翼手(left fielder) / 〈C〉(ボクシングで)左手打ち
〈船〉‘を'艤装(ぎそう)する / (マストなどを)〈船〉‘に'つける《+『名』+『with』+『名』》;(マストに)〈帆〉‘を'つける《+『名』+『to』+『名』》 / …‘に'装備をつける;…‘を'装備する《+『up』+『名,』+『名』+『up』》 / 船の装備(帆装),艤装(ぎそう) / (特定の目的のための)道具,用具 / 《英話》衣服,服装(clothing)
〈他〉〈相場など〉を不正な手段であやつる
(左右の)対称,相称 / (型の)つりあい,調和

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/08/12 20:16:05」(JST)

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[Wiki en表示]

Left–right symmetry is a general principle in physics which holds that valid physical laws must not produce a different result for a motion that is left-handed than motion that is right-handed. The most common application is expressed as equal treatment of clockwise and counter-clockwise rotations from a fixed frame of reference.

The general principle is often referred to by the name chiral symmetry. The rule is absolutely valid in the classical mechanics of Newton and Einstein, but results from quantum mechanical experiments show a difference in the behavior of left-chiral versus right-chiral subatomic particles.

Particle Physics

In theoretical physics, the electroweak model breaks parity maximally. All its fermions are chiral Weyl fermions, which means that the charged weak gauge bosons only couple to left-handed quarks and leptons. (Note that the neutral electroweak Z boson already couples to left and right-handed fermions.) Some theorists found this objectionable, and so proposed a GUT extension of the weak force which has new, high energy W' and Z' bosons which couple with right handed quarks and leptons.

to

Here, SU(2)_L (pronounced SU(2) left) is none other than SU(2)_W and B−L is the baryon number minus the lepton number. An advantage of this model over the Standard Model is that the electric charge formula in this model is given by

;

where are the weak isospin values of the fields in the theory.

There is also the chromodynamic SU(3)_C. The idea was to restore parity by introducing a left-right symmetry. This is a group extension of Z₂ (the left-right symmetry) by

to the semidirect product

This has two connected components where Z₂ acts as an automorphism, which is the composition of an involutive outer automorphism of SU(3)_C with the interchange of the left and right copies of SU(2) with the reversal of U(1)_B−L. It was shown by Rabindra N. Mohapatra and Goran Senjanovic in 1975 that left-right symmetry can be spontaneously broken to give a chiral low energy theory, which is the Standard Model of Glashow, Weinberg and Salam and it also connects the small observed neutrino masses to the breaking of left-right symmetry via the seesaw mechanism.

In this setting the chiral quarks

(3,2,1)_1/3

and

are unified into an irrep

The leptons are also unified into an irrep

The Higgs bosons needed to implement the breaking of left-right symmetry down to the Standard Model are

This then predicts three sterile neutrinos, which is perfectly consistent with current^[update] neutrino oscillation data. Within the seesaw mechanism, the sterile neutrinos become superheavy without affecting physics at low energies.

Because the left-right symmetry is spontaneously broken, left-right models predict domain walls.

This left-right symmetry idea first appeared in the Pati–Salam model (1974), Mohapatra–Pati models (1975) and later in trinification (1984).

UpToDate Contents

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1. Anatomy, clinical manifestations, and diagnosis of heterotaxy (isomerism of the atrial appendages)
2. 不整脈原性右室心筋症の臨床症状および診断 clinical manifestations and diagnosis of arrhythmogenic right ventricular cardiomyopathy
3. 幼児および小児における孤立性心室中隔欠損の病態生理および臨床的特徴 pathophysiology and clinical features of isolated ventricular septal defects in infants and children
4. 血管輪 vascular rings
5. 前胸部拍動の検討 examination of the precordial pulsation

English Journal

Feasibility Study of Perfusion Imaging Using Flat Detector CT with an Intra-Arterial Injection Protocol Compared to Conventional Multi-Slice Perfusion CT with an Intravenous Injection Protocol.

Zhang Q, Wang B, Han J, Zhang Z, Sun Q, Beilner J, Shen C, He Z, Dai Y, Xu R.Author information Beijing PLA Military General Hospital Affiliated Bayi Brain Hospital; Beijing, China - xuruxiang_bjjz@hotmail.com.AbstractThis study investigated the feasibility of using intra-arterial injection-based cerebral blood volume (CBV) imaging with flat detector computed tomography (CT, IAFD-CBV). It is proven that this new method could provide comparable physiologic information as standard intravenous injection-based multi-slice computed tomography CBV imaging (IVCT-CBV). Twelve patients were examined using both IAFD-CBV and IVCT-CBV. An experienced neuroradiologist read both sets of generated CBV maps. If a physiologic perfusion disorder was detected in standard IVCT-CBV, the focus was to check whether IAFD-CBV indicated the same disorder or not. Otherwise, if no disorder was detected, relative CBV (rCBV) values at different basal ganglia regions were measured for both CBV maps and then compared. For three patients with lesions, IAFD-CBV and IVCT-CBV showed similar perfusion disorders in the corresponding regions. For nine patients without lesions, both CBV maps showed good symmetry of contrast agent (CA) distribution for left/right hemisphere, the total average of rCBV was found to be 0.94 -/+0.18 and 1.01 -/+0.14 (1.0 for perfect symmetry) in IAFD-CBV and IVCT-CBV, respectively. However, compared to IVCT-CBV, IAFD-CBV imaging required 70% less contrast agent (CA). In general, a good correlation between IAFD-CBV and IVCT-CBV was found for all 12 patients. Minor deviations of IAFD-CBV were only detected at regions supplied by the middle cerebral artery. IAFD-CBV imaging, which can be directly performed in a catheterization laboratory, was proven to be technically feasible for real-time CBV assessment of the whole brain with good accuracy, and minimized CA usage.
Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences.Interv Neuroradiol.2013 Dec 20;19(4):409-15. Epub 2013 Dec 18.
This study investigated the feasibility of using intra-arterial injection-based cerebral blood volume (CBV) imaging with flat detector computed tomography (CT, IAFD-CBV). It is proven that this new method could provide comparable physiologic information as standard intravenous injection-based multi-
PMID 24355143

Establishment of left-right asymmetry in vertebrate development: the node in mouse embryos.

Komatsu Y, Mishina Y.Author information Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, 1011 N. University Ave., Ann Arbor, MI, 48109, USA.AbstractEstablishment of vertebrate left-right asymmetry is a critical process for normal embryonic development. After the discovery of genes expressed asymmetrically along the left-right axis in chick embryos in the mid 1990s, the molecular mechanisms responsible for left-right patterning in vertebrate embryos have been studied extensively. In this review article, we discuss the mechanisms by which the initial symmetry along the left-right axis is broken in the mouse embryo. We focus on the role of primary cilia and molecular mechanisms of ciliogenesis at the node when symmetry is broken and left-right asymmetry is established. The node is considered a signaling center for early mouse embryonic development, and the results we review here have led to a better understanding of how the node functions and establishes left-right asymmetry.
Cellular and molecular life sciences : CMLS.Cell Mol Life Sci.2013 Dec;70(24):4659-66. doi: 10.1007/s00018-013-1399-9. Epub 2013 Jun 16.
Establishment of vertebrate left-right asymmetry is a critical process for normal embryonic development. After the discovery of genes expressed asymmetrically along the left-right axis in chick embryos in the mid 1990s, the molecular mechanisms responsible for left-right patterning in vertebrate emb
PMID 23771646

A Nodal-independent and tissue-intrinsic mechanism controls heart-looping chirality.

Noël ES, Verhoeven M, Lagendijk AK, Tessadori F, Smith K, Choorapoikayil S, den Hertog J, Bakkers J.Author information Hubrecht Institute-KNAW and University Medical Center Utrecht, 3584CT Utrecht, The Netherlands.AbstractBreaking left-right symmetry in bilateria is a major event during embryo development that is required for asymmetric organ position, directional organ looping and lateralized organ function in the adult. Asymmetric expression of Nodal-related genes is hypothesized to be the driving force behind regulation of organ laterality. Here we identify a Nodal-independent mechanism that drives asymmetric heart looping in zebrafish embryos. In a unique mutant defective for the Nodal-related southpaw gene, preferential dextral looping in the heart is maintained, whereas gut and brain asymmetries are randomized. As genetic and pharmacological inhibition of Nodal signalling does not abolish heart asymmetry, a yet undiscovered mechanism controls heart chirality. This mechanism is tissue intrinsic, as explanted hearts maintain ex vivo retain chiral looping behaviour and require actin polymerization and myosin II activity. We find that Nodal signalling regulates actin gene expression, supporting a model in which Nodal signalling amplifies this tissue-intrinsic mechanism of heart looping.
Nature communications.Nat Commun.2013 Nov 11;4:2754. doi: 10.1038/ncomms3754.
Breaking left-right symmetry in bilateria is a major event during embryo development that is required for asymmetric organ position, directional organ looping and lateralized organ function in the adult. Asymmetric expression of Nodal-related genes is hypothesized to be the driving force behind regu
PMID 24212328

Japanese Journal

呼吸音信号による無気肺症状検出

薗田光太郎,小森田健,滝川雄,喜安千弥,宮原末治
電子情報通信学会技術研究報告. EA, 応用音響 111(89), 13-18, 2011-06-16
気道や気管の閉塞によって肺換気機能が低下する無気肺の症状を,電子聴診器によって収録される呼吸音信号から観察することを検討した.通常の聴診において無気肺は,正常時に比べて呼吸音の音の大きさの低下や,左右の同一部位での音の大きさの不均衡などから発見されるが,医師の主観的な判断に基づくものであるため,呼吸流速計や血中酸素濃度計など客観的指標が用いられてきた.本報告では,収録した呼吸音信号のパワースペクト …
NAID 110008746308

顔面神経麻痺度合いの定量評価 : 顔表情動画像データベースの構築と顔形状解析(テーマセッション,医用画像処理分野における計測・認識・理解)

木原裕太,段桂芳,松代直樹,西田武司,陳延偉
電子情報通信学会技術研究報告. PRMU, パターン認識・メディア理解 111(48), 87-92, 2011-05-12
顔面神経麻痺は顔の表情筋が麻痺し,動かなくなる病気である.顔面神経麻痺の治療を行う上で麻痺度合いを評価することは重要である.本論文では,顔面神経麻痺患者の顔表情動画像データベースを構築し,その顔形状を解析することで麻痺度合いを定量的に評価する手法を提案する.本手法は顔面神経麻痺の左右非対称性に着目し,安静時と柳原法における各表情時の患側と健側の顔形状の移動量の偏りを求め,それを評価値とするものであ …
NAID 110008726268