WordNet
- (embryology) the repeated division of a fertilised ovum (同)segmentation
- the breaking of a chemical bond in a molecule resulting in smaller molecules
- the state of being split or cleft; "there was a cleavage between the liberal and conservative members"
- the act of cleaving or splitting
- the line formed by a groove between two parts (especially the separation between a womans breasts)
PrepTutorEJDIC
- 割る(割れる)こと;割れ(裂け)目 / 卵割(受精卵の細胞分裂) / (鉱物の結晶の)劈開(へきかい) / 《話》(大きなえりぐりのドレスから見える)乳房の谷間
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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2013/04/16 14:32:02」(JST)
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- 1. 小児における溶血性貧血の概要 overview of hemolytic anemias in children
- 2. Hemolytic anemia due to drugs and toxins
- 3. Diagnosis of hemolytic anemia in the adult
- 4. 機械的損傷による外因性非免疫性溶血性貧血：断片化溶血および脾機能亢進 extrinsic nonimmune hemolytic anemia due to mechanical damage fragmentation hemolysis and hypersplenism
- 5. Autoimmune hemolytic anemia in children: Classification, clinical features, and diagnosis
English Journal
- Influences of Proline and Cysteine Residues on Fragment Yield in Matrix-Assisted Laser Desorption/Ionization In-Source Decay Mass Spectrometry.
- Asakawa D1, Smargiasso N, Quinton L, De Pauw E.Author information 1Chemistry Department and GIGA-R, Mass Spectrometry Laboratory, University of Liege, Liege, Belgium, dasakawa@mch.pref.osaka.jp.AbstractMatrix-assisted laser desorption/ionization in-source decay produces highly informative fragments for the sequencing of peptides/proteins. Among amino acids, cysteine and proline residues were found to specifically influence the fragment yield. As they are both frequently found in small peptide structures for which de novo sequencing is mandatory, the understanding of their specific behaviors would allow useful fragmentation rules to be established. In the case of cysteine, a c•/w fragment pair originating from Xxx-Cys is formed by side-chain loss from the cysteine residue. The presence of a proline residue contributes to an increased yield of ISD fragments originating from N-Cα bond cleavage at Xxx1-Xxx2Pro, which is attributable to the cyclic structure of the proline residue. Our results suggest that the aminoketyl radical formed by MALDI-ISD generally induces the homolytic N-Cα bond cleavage located on the C-terminal side of the radical site. In contrast, N-Cα bond cleavage at Xxx-Pro produces no fragments and the N-Cα bond at the Xxx1-Xxx2Pro bond is alternatively cleaved via a heterolytic cleavage pathway.
- Journal of the American Society for Mass Spectrometry.J Am Soc Mass Spectrom.2014 Apr 4. [Epub ahead of print]
- Matrix-assisted laser desorption/ionization in-source decay produces highly informative fragments for the sequencing of peptides/proteins. Among amino acids, cysteine and proline residues were found to specifically influence the fragment yield. As they are both frequently found in small peptide stru
- PMID 24700120
- Comparative Studies of Thermally Induced Homolytic CarbonCarbon Bond Cleavage Reactions of Strained Dicarba[2]ferrocenophanes and Their Ring-Opened Oligomers and Polymers.
- Russell AD1, Gilroy JB, Manners I.Author information 1School of Chemistry, University of Bristol, Cantocks' Close, Bristol BS8 1TS (UK).AbstractReactivity studies of dicarba[2]ferrocenophanes and also their corresponding ring-opened oligomers and polymers have been conducted in order to provide mechanistic insight into the processes that occur under the conditions of their thermal ring-opening polymerisation (ROP) (300 °C). Thermolysis of dicarba[2]ferrocenophane rac-[Fe(η(5) -C5 H4 )2 (CHPh)2 ] (rac-14; 300 °C, 1 h) does not lead to thermal ROP. To investigate this system further, rac-14 was heated in the presence of an excess of cyclopentadienyl anion, to mimic the postulated propagating sites for thermally polymerisable analogues. This afforded acyclic [(η(5) -C5 H5 )Fe(η(5) -C5 H4 )-CH2 Ph] (17) through cleavage of both a FeCp bond and also the CC bond derived from the dicarba bridge. Evidence supporting a potential homolytic CC bond cleavage pathway that occurs in the absence of ring-strain was provided through thermolysis of an acyclic analogue of rac-14, namely [(η(5) -C5 H5 )Fe(η(5) -C5 H4 )(CHPh)2 -C5 H5 ] (15; 300 °C, 1 h), which also afforded ferrocene derivative 17. This reactivity pathway appears general for post-ROP species bearing phenyl substituents on adjacent carbons, and consequently was also observed during the thermolysis of linear polyferrocenylethylene [Fe(η(5) -C5 H4 )2 (CHPh)2 ]n (16; 300 °C, 1 h), which was prepared by photocontrolled ROP of rac-14 at 5 °C. This afforded ferrocene derivative [Fe(η(5) -C5 H4 CH2 Ph)2 ] (23) through selective cleavage of the H(Ph)CC(Ph)H bonds in the dicarba linkers. These processes appear to be facilitated by the presence of bulky, radical-stabilising phenyl substituents on each carbon of the linker, as demonstrated through the contrasting thermal properties of unsubstituted linear trimer [(η(5) -C5 H5 )Fe(η(5) -C5 H4 )(CH2 )2 (η(5) -C5 H4 )Fe(η(5) -C5 H4 )(CH2 )2 (η(5) -C5 H4 )Fe(η(5) -C5 H5 )] (29) with a H2 CCH2 spacer, which proved significantly more stable under analogous conditions. Evidence for the radical intermediates formed through CC bond cleavage was detected through high-resolution mass spectrometric analysis of co-thermolysis reactions involving rac-14 and 15 (300 °C, 1 h), which indicated the presence of higher molecular weight species, postulated to be formed through cross-coupling of these intermediates.
- Chemistry (Weinheim an der Bergstrasse, Germany).Chemistry.2014 Apr 1;20(14):4077-85. doi: 10.1002/chem.201304396. Epub 2014 Mar 3.
- Reactivity studies of dicarba[2]ferrocenophanes and also their corresponding ring-opened oligomers and polymers have been conducted in order to provide mechanistic insight into the processes that occur under the conditions of their thermal ring-opening polymerisation (ROP) (300 °C). Thermolysis o
- PMID 24590922
- Unusual formation of a N-heterocyclic germylene via homolytic cleavage of a C-C bond.
- Li Y1, Mondal KC, Stollberg P, Zhu H, Roesky HW, Herbst-Irmer R, Stalke D, Fliegl H.Author information 1State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China. hpzhu@xmu.edu.cn.AbstractReaction of the monoanionic radical salt IP˙(-)K(+) (IP = (Py)CH(=NR); Py = C5H4N, R = 2,6-iPr2C6H3; α-iminopyridine) with GeCl2(dioxane) afforded compound (IPGeCl)2 (1) which produced red blocks of IPGe: (2), when treated with KC8 in toluene. 1 is a digermylene formed via C-C coupling between two carbon-centered radicals. 2 can be considered as an analogue of a N-heterocyclic carbene, which exhibits a five-membered GeC2N2 ring with one C=C double bond. 2 is formed by two-electron reduction of 1 with cleavage of the two Ge-Cl bonds and the central C-C single bond.
- Chemical communications (Cambridge, England).Chem Commun (Camb).2014 Mar 28;50(25):3356-8. doi: 10.1039/c4cc00251b. Epub 2014 Feb 18.
- Reaction of the monoanionic radical salt IP˙(-)K(+) (IP = (Py)CH(=NR); Py = C5H4N, R = 2,6-iPr2C6H3; α-iminopyridine) with GeCl2(dioxane) afforded compound (IPGeCl)2 (1) which produced red blocks of IPGe: (2), when treated with KC8 in toluene. 1 is a digermylene formed via C-C coupling between two
- PMID 24549122
Japanese Journal
- Reactions of a Stable Phosphinyl Radical with Stable Aminoxyl Radicals
- Chemistry Letters 44(1), 94-96, 2015
- NAID 130004868307
- 低原子価チタン反応剤Ti(OR)4/Me3SiCl/Mgの開発と反応
- 有機合成化学協会誌 72(4), 382-392, 2014
- NAID 130004548589
- Dramatic Effect of Atmosphere on Product Distribution from Steady-State Photolysis of Triarylphosphines
- Bulletin of the Chemical Society of Japan 87(9), 988-996, 2014
- NAID 130004153314
Related Links
- 世界大百科事典 第2版 - homolytic cleavageの用語解説 - この結合の開裂(および生成)には二つの様式がある。原子AとBが2個の電子を共有してつくる結合A：Bの開裂が対称的に起こり，AおよびBがそれぞれ1個の電子を得るとき，すなわち ...
- Homolytic bond cleavage (homolytic cleavage; homolysis): Bond breaking in which the bonding electron pair is split evenly between the products. Homolytic cleavage often produces radicals.
Related Pictures
★リンクテーブル★
| リンク元 | 「等方性分解」「均等開裂」「ホモ開裂」「symmetric fission」「symmetrical fission」 |
| 関連記事 | 「cleavage」「homolytic」 |
「等方性分解」
「均等開裂」
「ホモ開裂」
- 英
- [[]]
- 同
- homolytic cleavage
- 関
- [[]]
「symmetric fission」
「symmetrical fission」
「cleavage」
- n.
- 裂けること、裂開、分割。(政党などの)分裂(between)
- (襟ぐりの深いドレスであらわになった)女性の乳房の間のくぼみ、乳房の谷間
- 劈開
- 劈開面
- (受精卵の)卵割
「homolytic」
- ホモリシスの、等方性の