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| 1 | Microstructure and mechanical properties of WC-20wt% Co/ZrO_2(3Y)cermet composites显示文摘The cermet composites WC-20wt%Co/ZrO2(3Y) with four different contents of ZrO2(3Y) were prepared by normal vacuumsinter processing; the optical microscope and SEM were used to characterize their microstructures. The hardness, bending strength andimpact toughness of the specimens were determined. The experimental results show that ZrO2(3Y) particles in WC-20wt%Co matrixare spherical particles in different sizes which are distributed uniformly in Co phases and WC phases, the bending strength and impacttoughness of the WC-20wt%Co cermet composites added ZrO2(3Y) improve remarkably, but the hardness values have little change. | Lin An Jingtao Han Jan Chen | 2006 | Journal of University of Science and Technology Beijing2006，13，2： | 3 |
| 2 | Measuring a dynamical topological order parameter in quantum walks显示文摘Quantum processes of inherent dynamical nature,such as quantum walks,defy a description in terms of an equilibrium statistical physics ensemble.Until now,identifying the general principles behind the underlying unitary quantum dynamics has remained a key challenge.Here,we show and experimentally observe that split-step quantum walks admit a characterization in terms of a dynamical topological order parameter(DTOP).This integer-quantized DTOP measures,at a given time,the winding of the geometric phase accumulated by the wavefunction during a quantum walk.We observe distinct dynamical regimes in our experimentally realized quantum walks,and each regime can be attributed to a qualitatively different temporal behavior of the DTOP.Upon identifying an equivalent manybody problem,we reveal an intriguing connection between the nonanalytic changes of the DTOP in quantum walks and the occurrence of dynamical quantum phase transitions. | Xiao-Ye Xu Qin-Qin Wang Markus Heyl Jan Carl Budich Wei-Wei Pan Zhe Chen Munsif Jan Kai Sun Jin-Shi Xu Yong-Jian Han Chuan-Feng Li Guang-Can Guo | 2020 | Light(Science & Applications)2020，9，1： | 2 |
| 3 | A novel cross-shape DGS applied to design ultra-wide stopband low-pass filters 显示文摘 | Chen Han Jan Huang Tsung Hui Chang Chin Sheng | 2006 | IEEE Microwave and Wireless Components Letters2006，16，5： | 1 |
| 4 | A novel integerable surface acoustic wave notch filter显示文摘 | TANG I-Tseng CHEN Han Jan HOUNG Mau Phon | 2003 | Solid State Electronics2003，5，47： | 1 |
| 5 | Mitotically Inactivated Embryonic Stem Cells Can Be Used as an In Vivo Feeder Layer to Nurse Damaged Myocardium after Acute Myocardial Infarction: A Preclinical Study显示文摘 | Richard K. Burt You-hong Chen Larissa Verda Carolina Lucena Shankararao Navale Jesse Johnson Xiaoqiang Han Jon Lomasney Jessa M. Baker Ka-Leung Ngai Aya Kino James Carr Jan Kajstura Piero Anversa | 2012 | Circulation Research2012，，10： | 1 |
| 6 | Nucleolar GTPase Bms1 displaces Ttf1 from RFB-sites to balance progression of rDNA transcription and replication显示文摘18S,5.8S,and 28S ribosomal RNAs(rRNAs)are cotranscribed as a pre-ribosomal RNA(pre-rRNA)from the rDNA by RNA polymerase I whose activity is vigorous during the S-phase,leading to a conflict with rDNA replication.This conflict is resolved partly by replication-fork-barrier(RFB)-sites sequences located downstream of the rDNA and RFB-binding proteins such as Ttf1.However,how Ttf1 is displaced from RFB-sites to allow replication fork progression remains elusive.Here,we reported that loss-of-function of Bms1l,a nucleolar GTPase,upregulates rDNA transcription,causes replication-fork stall,and arrests cell cycle at the S-to-G2 transition;however,the G1-to-S transition is constitutively active characterized by persisting DNA synthesis.Concomitantly,ubf,tif-IA,and taf1b marking rDNA transcription,Chk2,Rad51,and p53 marking DNA-damage response,and Rpa2,PCNA,Fen1,and Ttf1 marking replication fork stall are all highly elevated in bms1l mutants.We found that Bms1 interacts with Ttf1 in addition to Rc1l.Finally,we identified RFB-sites for zebrafish Ttf1 through chromatin immunoprecipitation sequencing and showed that Bms1 disassociates the Ttf1–RFB complex with its GTPase activity.We propose that Bms1 functions to balance rDNA transcription and replication at the S-phase through interaction with Rcl1 and Ttf1,respectively.TTF1 and Bms1 together might impose an S-phase checkpoint at the rDNA loci. | Yanqing Zhu Yong Wang Boxiang Tao Jinhua Han Hong Chen Qinfang Zhu Ling Huang Yinan He Jian Hong Yunqin Li Jun Chen Jun Huang Li Jan Lo Jinrong Peng | 2021 | Journal of Molecular Cell Biology2021，13，12： | 0 |
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