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Clades of huge phages from across Earth's ecosystems

Al-Shayeb, B.*; Sachzdeva, R.*; Chen, L.-X.*; Ward, F.*; Munk, P.*; Devoto, A.*; Castelle, C. J.*; Olm, M. R.*; Bouma-Gregson, K.*; 天野 由記; et al.

Nature, 578(7795), p.425 - 431, 2020/02

 被引用回数:13 パーセンタイル:0.94(Multidisciplinary Sciences)

Phage typically have small genomes and depend on their bacterial hosts for replication. We generated metagenomic datasets from many diverse ecosystems and reconstructed hundreds of huge phage genomes, between 200 kbp and 716 kbp in length. Thirty four genomes were manually curated to completion, including the largest phage genomes yet reported. Expanded genetic repertoires include diverse and new CRISPR-Cas systems, tRNAs, tRNA synthetases, tRNA modification enzymes, initiation and elongation factors and ribosomal proteins. Phage CRISPR have the capacity to silence host transcription factors and translational genes, potentially as part of a larger interaction network that intercepts translation to redirect biosynthesis to phage-encoded functions. Some phage repurpose bacterial systems for phage-defense to eliminate competing phage. We phylogenetically define seven major clades of huge phage from human and other animal microbiomes, oceans, lakes, sediments, soils and the built environment. We conclude that large gene inventories reflect a conserved biological strategy, observed across a broad bacterial host range and resulting in the distribution of huge phage across Earth's ecosystems.


Fine structure in the $$alpha$$ decay of $$^{223}$$U

Sun, M. D.*; Liu, Z.*; Huang, T. H.*; Zhang, W. Q.*; Andreyev, A. N.; Ding, B.*; Wang, J. G.*; Liu, X. Y.*; Lu, H. Y.*; Hou, D. S.*; et al.

Physics Letters B, 800, p.135096_1 - 135096_5, 2020/01

 被引用回数:1 パーセンタイル:25.8(Astronomy & Astrophysics)

Fine structure in the $$alpha$$ decay of $$^{223}$$U was observed in the fusion-evaporation reaction $$^{187}$$Re($$^{40}$$Ar,p3n) by using fast digital pulse processing technique. Two $$alpha$$-decay branches of $$^{223}$$U feeding the ground state and 244 keV excited state of $$^{219}$$Th were identified by establishing the decay chain $$^{223}$$U$$rightarrow$$$$^{219}$$Th$$rightarrow$$$$^{215}$$Ra$$rightarrow$$$$^{211}$$Rn. The $$alpha$$-particle energy for the ground-state to ground-state transition of $$^{223}$$U was determined to be 8993(17) keV, 213 keV higher than the previous value, the half-life was updated to be 62$$^{+14}_{-10} mu$$s. Evolution of nuclear structure for $$N$$=131 even-$$Z$$ isotones from Po to U was discussed in the frameworks of nuclear mass and reduced $$alpha$$-decay width, a weakening octupole deformation in the ground state of $$^{223}$$U relative to its lighter isotones $$^{219}$$Ra and $$^{211}$$Th was suggested.


Spinmotive force in the out-of-plane direction generated by spin wave excitations in an exchange-coupled bilayer element

Zhou, W.*; 関 剛斎*; 今村 裕志*; 家田 淳一; 高梨 弘毅*

Physical Review B, 100(9), p.094424_1 - 094424_5, 2019/09

 被引用回数:1 パーセンタイル:71.33(Materials Science, Multidisciplinary)

The generation of the spinmotive force (SMF) requires the temporal and spatial variations of the magnetic moments. We explore an approach to satisfy this requirement by creating asymmetry in a thin film structure along the out-of-plane direction, through the use of an exchange-coupled $$L$$1$$_{0}$$-FePt / Ni$$_{81}$$Fe$$_{19}$$ bilayer element. As the spin wave is excited by rf magnetic field, a continuous dc voltage signal along the out-of-plane direction of the bilayer element appears. The sign of the voltage signal and its microwave power dependency agree with the theoretical framework of the SMF. The corresponding spin wave modes are revealed by carrying out the micromagnetic simulation. Our results demonstrate the generation of the SMF using a vertically structured element in addition to previously reported in-plane structured devices.


Asymmetrically optimized structure in a high-$$T_{rm c}$$ single unit-cell FeSe superconductor

深谷 有喜; Zhou, G.*; Zheng, F.*; Zhang, P.*; Wang, L.*; Xue, Q.-K.*; 社本 真一

Journal of Physics; Condensed Matter, 31(5), p.055701_1 - 055701_6, 2019/02

 被引用回数:4 パーセンタイル:32.43(Physics, Condensed Matter)



Ag nanoparticles embedded in Nd:YAG crystals irradiated with tilted beam of 200 MeV Xe ions; Optical dichroism correlated to particle reshaping

Li, R.*; Pang, C.*; 雨倉 宏*; Ren, F.*; H$"u$bner, R.*; Zhou, S.*; 石川 法人; 大久保 成彰; Chen, F.*

Nanotechnology, 29(42), p.424001_1 - 424001_8, 2018/10

 被引用回数:4 パーセンタイル:61.62(Nanoscience & Nanotechnology)



Scaling of memories and crossover in glassy magnets

Samarakoon, A. M.*; 高橋 満*; Zhang, D.*; Yang, J.*; 片山 尚幸*; Sinclair, R.*; Zhou, H. D.*; Diallo, S. O.*; Ehlers, G.*; Tennant, D. A.*; et al.

Scientific Reports (Internet), 7(1), p.12053_1 - 12053_8, 2017/09


 被引用回数:3 パーセンタイル:55.48(Multidisciplinary Sciences)

Glassiness is ubiquitous and diverse in characteristics in nature. Understanding their differences and classification remains a major scientific challenge. Here, we show that scaling of magnetic memories with time can be used to classify magnetic glassy materials into two distinct classes. The systems studied are high temperature superconductor-related materials, spin-orbit Mott insulators, frustrated magnets, and dilute magnetic alloys. Our bulk magnetization measurements reveal that most densely populated magnets exhibit similar memory behavior characterized by a relaxation exponent of $$1-n$$ $$approx$$ $$0.6$$(1). This exponent is different from $$1-n$$ $$approx$$ $$1/3$$ of dilute magnetic alloys that was ascribed to their hierarchical and fractal energy landscape, and is also different from $$1-n=1$$ of the conventional Debye relaxation expected for a spin solid, a state with long range order.


Precise determination of $$^{12}_{Lambda}$$C level structure by $$gamma$$-ray spectroscopy

細見 健二; Ma, Y.*; 味村 周平*; 青木 香苗*; 大樂 誠司*; Fu, Y.*; 藤岡 宏之*; 二ツ川 健太*; 井元 済*; 垣口 豊*; et al.

Progress of Theoretical and Experimental Physics (Internet), 2015(8), p.081D01_1 - 081D01_8, 2015/08

 被引用回数:12 パーセンタイル:29.71(Physics, Multidisciplinary)

$$gamma$$線分光によって$$^{12}_{Lambda}$$Cハイパー核のレベル構造を精密に測定した。ゲルマニウム検出器群Hyperball2を用いて、$$^{12}$$C$$(pi^{+}, K^{+}gamma)$$反応からの4本の$$gamma$$線遷移を同定することに成功した。基底状態スピン二重項$$(2^{-}, 1^{-}_{1})$$のエネルギー間隔は直接遷移$$M1$$$$gamma$$線により、$$161.5pm0.3$$(stat)$$pm0.3$$(syst)keVと測定された。また、励起準位である$$1^{-}_{2}$$$$1^{-}_{3}$$について、それぞれ、$$2832pm3pm4$$, keVと$$6050pm8pm7$$, keVと励起エネルギーを決定した。これらの測定された$$^{12}_{Lambda}$$Cの励起エネルギーは反応分光による$$lambda$$ハイパー核の実験研究において決定的な基準となる。


Overview of plasma-material interaction experiments on EAST employing MAPES

Ding, F.*; Luo, G.-N.*; Pitts, R.*; Litnovsky, A.*; Gong, X.*; Ding, R.*; Mao, H.*; Zhou, H.*; Wampler, W. R.*; Stangeby, P. C.*; et al.

Journal of Nuclear Materials, 455(1-3), p.710 - 716, 2014/12

 被引用回数:21 パーセンタイル:8.23(Materials Science, Multidisciplinary)

A movable material probe system (Material and Plasma Evaluation System: MAPES) with an independent pumping system and a sample exchange chamber has been developed and installed on a horizontal port of the EAST tokamak for studies of plasma material interaction (PMI). In the 2012 experimental campaign, deposition and erosion were studied for three samples: mock-up of the outer first wall panels (FWPs) in ITER, castellated tungsten, and molybdenum mirrors. The FWPs with carbon deposition layer were exposed to helium plasmas. The maximum erosion rate of the carbon was valuated to be 8 nm/s. The castellated tungsten with rectangular cells and roof-like shaped cells was exposed to deuterium plasmas to compare amount of deposits on the gap surface. The amount of carbon and boron impurities on the gap surface of the roof-like shaped cells were reduced to less than 30% compared with that of the rectangular cells. The molybdenum mirrors of which protective ducts are installed in front were exposed to deuterium plasmas in order to investigate effects of length of the ducts. It was found that the reflectivity of the mirrors with 60 mm-long protective ducts is kept the initial reflectivity.


In-beam $$gamma$$ spectroscopy of the even-even nucleus $$^{190}$$Pt

Li, G. S.*; Liu, M. L.*; Zhou, X. H.*; Zhang, Y. H.*; Liu, Y. X.*; Zhang, N. T.*; Hua, W.*; Zheng, Y. D.*; Fang, Y. D.*; Guo, S.*; et al.

Physical Review C, 89(5), p.054303_1 - 054303_9, 2014/05

 被引用回数:3 パーセンタイル:67.53(Physics, Nuclear)

タンデム加速器で88MeVにまで加速された$$^{18}$$Oビームを用いて$$^{176}$$Yb($$^{18}$$O, 4$$n$$)反応を起こし、$$^{190}$$Ptの高スピン準位を調べた。その結果、$$nu$$ $$i^{-2}_{13/2}$$ $$nu$$ $$h^{-1}_{9/2}$$ $$nu$$ $$j^{-1}$$1(ここで$$nu j$$$$nu p_{3/2}$$もしくは$$nu f_{5/2}$$)配位による正パリティバンドを大幅に拡張するとともに新しく負パリティバンドを同定し、$$nu$$ $$i^{-3}_{13/2}$$ $$nu$$ $$j^{-1}$$配位を持つことを明らかにした。また、イラスト準位においてスピンの増加に伴い振動から回転へと構造変化を起こしている可能性について議論した。さらにバンド特性を明らかにするためにTotal Routhian surface計算を行った。


Actively circulated liquid metal divertor (ACLMD)

嶋田 道也; 廣岡 慶彦*; Zhou, H.*

Europhysics Conference Abstracts (Internet), 38F, p.O2.110_1 - O2.110_4, 2014/00



Suppression of vacancy aggregation by silicon-doping in low-temperature-grown Ga$$_{1-x}$$Cr$$_{x}$$N

薮内 敦*; 前川 雅樹; 河裾 厚男; Zhou, Y.-K.*; 長谷川 繁彦*; 朝日 一*

Applied Physics Letters, 102(14), p.142406_1 - 142406_4, 2013/04

 被引用回数:1 パーセンタイル:100(Physics, Applied)

Effect of Si doping on low-temperature grown GaCrN films has been investigated by positron annihilation spectroscopy. In undoped GaCrN films grown at 540 $$^{circ}$$C, vacancy clusters with sizes of V$$_6$$-V$$_{12}$$ were found to be responsible for positron trapping. Such vacancy clusters were considerably suppressed in Si-doped GaCrN films grown at 540 $$^{circ}$$C, although divacancies (V$$_{Ga}$$V$$_N$$) still survived. The Si-doping may be one possible way to suppress vacancy aggregation during low temperature crystal growth, and the further methods to remove divacancies are required.


Rotational band properties of $$^{173}$$W

Wang, H. X.*; Zhang, Y. H.*; Zhou, X. H.*; Liu, M. L.*; Ding, B.*; Li, G. S.*; Hua, W.*; Zhou, H. B.*; Guo, S.*; Qiang, Y. H.*; et al.

Physical Review C, 86(4), p.044305_1 - 044305_11, 2012/10


 被引用回数:4 パーセンタイル:66.54(Physics, Nuclear)

High-spin states in $$^{173}$$W have been studied using the $$^{150}$$Nd($$^{28}$$Si,5$$n$$)$$^{173}$$W reaction at beam energies of 135 and 140 MeV. The previously known bands associated with the 7/2$$^+$$[633], 5/2$$^-$$[512], and 1/2$$^-$$[521] configurations are extended significantly, and the unfavored signature branch of the 1/2$$^-$$[521] band is established for the first time. The band properties, such as level spacings, band-crossing frequencies, alignment gains, and signature splittings, are discussed with an emphasis on the low-spin signature inversion observed in the 5/2$$^-$$[512] band. By comparing the experimental $$B$$($$M$$1)/$$B$$($$E$$2) ratios with the theoretical values, we conclude that the configuration of the 5/2$$^-$$[512] band is quite pure at low spins without appreciable admixture of the 5/2$$^-$$[523] orbit, in conflict with the particle rotor model calculated results.


Applicability of finite element method to collapse analysis of steel connection under compression

Zhou, Z.; 西田 明美; 桑村 仁*

Progress in Nuclear Science and Technology (Internet), 2, p.481 - 485, 2011/10



High-j proton alignments in $$^{101}$$Pd

Zhou, H. B.*; Zhou, X. H.*; Zhang, Y. H.*; Zheng, Y.*; Liu, M. L.*; Zhang, N. T.*; Chen, L.*; Wang, S. T.*; Li, G. S.*; Wang, H. X.*; et al.

European Physical Journal A, 47(9), p.107_1 - 107_7, 2011/09

 被引用回数:4 パーセンタイル:63.57(Physics, Nuclear)

$$^{101}$$Pd原子核の高スピン状態を、タンデム加速器及び多重$$gamma$$線検出装置GEMINI-IIを用いて、インビーム$$gamma$$線核分光法で調べた。既知の$$d$$$$_{5/2}$$バンド, 1/2$$^-$$[550]バンドをより高スピン状態まで拡張した。発見されたバンド交差は$$g$$$$_{9/2}$$陽子の整列によるものであると解釈した。$$^{101}$$Pdの回転バンドの性質を周辺の核、及びcranked shell modelと比較・議論した。


Signature inversion in the 7/2$$^-$$[503] band of $$^{185}$$Pt

Li, G. S.*; Zhou, X. H.*; Zhang, Y. H.*; Zheng, Y.*; Liu, M. L.*; Hua, W.*; Zhou, H. B.*; Ding, B.*; Wang, H. X.*; Lei, X. G.*; et al.

Journal of Physics G; Nuclear and Particle Physics, 38(9), p.095105_1 - 095105_9, 2011/09

 被引用回数:1 パーセンタイル:86.74(Physics, Nuclear)



Event structure and double helicity asymmetry in jet production from polarized $$p + p$$ collisions at $$sqrt{s}$$ = 200 GeV

Adare, A.*; Afanasiev, S.*; Aidala, C.*; Ajitanand, N. N.*; Akiba, Y.*; Al-Bataineh, H.*; Alexander, J.*; Aoki, K.*; Aphecetche, L.*; Armendariz, R.*; et al.

Physical Review D, 84(1), p.012006_1 - 012006_18, 2011/07

 被引用回数:22 パーセンタイル:28.74(Astronomy & Astrophysics)

重心エネルギー200GeVでの縦偏極陽子陽子衝突からのジェット生成のイベント構造と二重非対称($$A_{LL}$$)について報告する。光子と荷電粒子がPHENIX実験で測定され、イベント構造がPHYTIAイベント生成コードの結果と比較された。再構成されたジェットの生成率は2次までの摂動QCDの計算で十分再現される。測定された$$A_{LL}$$は、一番低い横運動量で-0.0014$$pm$$0.0037、一番高い横運動量で-0.0181$$pm$$0.0282であった。この$$A_{LL}$$の結果を幾つかの$$Delta G(x)$$の分布を仮定した理論予想と比較する。


Identified charged hadron production in $$p + p$$ collisions at $$sqrt{s}$$ = 200 and 62.4 GeV

Adare, A.*; Afanasiev, S.*; Aidala, C.*; Ajitanand, N. N.*; 秋葉 康之*; Al-Bataineh, H.*; Alexander, J.*; 青木 和也*; Aphecetche, L.*; Armendariz, R.*; et al.

Physical Review C, 83(6), p.064903_1 - 064903_29, 2011/06

 被引用回数:140 パーセンタイル:0.67(Physics, Nuclear)

200GeVと62.4GeVでの陽子陽子の中心衝突からの$$pi, K, p$$の横運動量分布及び収量をRHICのPHENIX実験によって測定した。それぞれエネルギーでの逆スロープパラメーター、平均横運動量及び単位rapidityあたりの収量を求め、異なるエネルギーでの他の測定結果と比較する。また$$m_T$$$$x_T$$スケーリングのようなスケーリングについて示して陽子陽子衝突における粒子生成メカニズムについて議論する。さらに測定したスペクトルを二次の摂動QCDの計算と比較する。


Azimuthal correlations of electrons from heavy-flavor decay with hadrons in $$p+p$$ and Au+Au collisions at $$sqrt{s_{NN}}$$ = 200 GeV

Adare, A.*; Afanasiev, S.*; Aidala, C.*; Ajitanand, N. N.*; 秋葉 康之*; Al-Bataineh, H.*; Alexander, J.*; 青木 和也*; Aphecetche, L.*; Aramaki, Y.*; et al.

Physical Review C, 83(4), p.044912_1 - 044912_16, 2011/04

 被引用回数:7 パーセンタイル:49.35(Physics, Nuclear)



Measurement of neutral mesons in $$p$$ + $$p$$ collisions at $$sqrt{s}$$ = 200 GeV and scaling properties of hadron production

Adare, A.*; Afanasiev, S.*; Aidala, C.*; Ajitanand, N. N.*; Akiba, Y.*; Al-Bataineh, H.*; Alexander, J.*; Aoki, K.*; Aphecetche, L.*; Armendariz, R.*; et al.

Physical Review D, 83(5), p.052004_1 - 052004_26, 2011/03

 被引用回数:133 パーセンタイル:1.64(Astronomy & Astrophysics)

RHIC-PHENIX実験で重心エネルギー200GeVの陽子陽子衝突からの$$K^0_s$$, $$omega$$, $$eta'$$$$phi$$中間子生成の微分断面積を測定した。これらハドロンの横運動量分布のスペクトルの形はたった二つのパラメーター、$$n, T$$、のTsallis分布関数でよく記述できる。これらのパラメーターはそれぞれ高い横運動量と低い横運動量の領域のスペクトルを決めている。これらの分布をフィットして得られた積分された不変断面積はこれまで測定されたデータ及び統計モデルの予言と一致している。



河裾 厚男; 薮内 敦; 前川 雅樹; 長谷川 繁彦*; Zhou, Y.-K.*; 朝日 一*

JAEA-Review 2010-065, JAEA Takasaki Annual Report 2009, P. 148, 2011/01


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