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| 1 | Genome-wide Transcription Factor Gene Prediction and their Expressional Tissue-Specificities in Maize显示文摘Transcription factors (TFs) are important regulators of gene expression. To better understand TF-encoding genes in maize (Zea mays L.), a genome-wide TF prediction was performed using the updated B73 reference genome. A total of 2 298 TF genes were identified, which can be classified into 56 families. The largest family, known as the MYB superfamily, comprises 322 MYB and MYB-related TF genes. The expression patterns of 2014 (87.64%) TF genes were examined using RNA-seq data, which resulted in the identification of a subset of TFs that are specifically expressed in particular tissues (including root, shoot, leaf, ear, tassel and kernel). Similarly, 98 kernel-specific TF genes were further analyzed, and it was observed that 29 of the kernel-specific genes were preferentially expressed in the early kernel developmental stage, while 69 of the genes were expressed in the late kernel developmental stage. Identification of these TFs, particularly the tissue-specific ones, provides important information for the understanding of development and transcriptional regulation of maize. | Yi Jiang Biao Zeng Hainan Zhao Mei Zhang Shaojun Xie Jinsheng Lai | 2012 | Journal of Integrative Plant Biology2012，54，9： | 20 |
| 2 | Vegetation Cover Variation in the Qilian Mountains and its Response to Climate Change in 2000-2011显示文摘An understanding of variations in vegetation cover in response to climate change is critical for predicting and managing future terrestrial ecosystem dynamics. Because scientists anticipate that mountain ecosystems will be more sensitive to future climate change compared to others, our objectives were to investigate the impacts of climate change on variation in vegetation cover in the Qilian Mountains(QLM), China, between 2000 and 2011. To accomplish this, we used linear regression techniques on 250-m MODIS Normalized Difference Vegetation Index(NDVI) datasets and meteorological records to determine spatiotemporal variability in vegetation cover and climatic factors(i.e. temperature and precipitation). Our results showed that temperatures and precipitation have increased in this region during our study period. In addition, we found that growing season mean NDVI was mainly distributed in the vertical zone from 2,700 m to 3,600 m in elevation. In the study region, we observed significant positive and negative trends in vegetation cover in 26.71% and2.27% of the vegetated areas. Correlation analyses indicated that rising precipitation from May to August was responsible for increased vegetation cover in areas with positive trends in growing season mean NDVI. However, there was no similar significant correlation between growing season mean NDVI and precipitation in regions where vegetation cover declined throughout our study period. Using spatialstatistics, we found that vegetation cover frequently declined in areas within the 2,500–3,100 m vertical zone, where it has steep slope, and is on the sunny side of mountains. Here, the positive influences of increasing precipitation could not offset the drier conditions that occurred through warming trends. In contrast, in higher elevation zones(3,900–4,500 m)on the shaded side of the mountains, rising temperatures and increasing precipitation improved conditions for vegetation growth. Increased precipitation also facilitated vegetation growth in areas experiencing warming trends at lower elevations(2,000–2,400 m) and on lower slopes where water was more easily conserved. We suggest that spatial differences in variation in vegetation as the result of climate change depend on local moisture and thermal conditions, which are mainly controlled by topography(e.g. elevation, aspect, and slope), and other factors, such as local hydrology. | DENG Shao-fu YANG Tai-bao ZENG Biao ZHU Xi-fen XU Hao-jie | 2013 | Journal of Mountain Science2013，10，6： | 19 |
| 3 | Endoscopic retrograde cholangiopancreatography in children with symptomatic pancreaticobiliary maljunction: A retrospective multicenter study显示文摘BACKGROUND Endoscopic retrograde cholangiopancreatography(ERCP)has been widely used in pediatric patients with cholangiopancreatic diseases.AIM To evaluate the efficacy,safety,and long-term follow-up results of ERCP in symptomatic pancreaticobiliary maljunction(PBM).METHODS A multicenter,retrospective study was conducted on 75 pediatric patients who were diagnosed with PBM and underwent therapeutic ERCP at three endoscopy centers between January 2008 and March 2019.They were divided into four PBM groups based on the fluoroscopy in ERCP.Their clinical characteristics,specific ERCP procedures,adverse events,and long-term follow-up results were retrospectively reviewed.RESULTS Totally,112 ERCPs were performed on the 75 children with symptomatic PBM.Clinical manifestations included abdominal pain(62/75,82.7%),vomiting(35/75,46.7%),acholic stool(4/75,5.3%),fever(3/75,4.0%),acute pancreatitis(47/75,62.7%),hyperbilirubinemia(13/75,17.3%),and elevated liver enzymes(22/75,29.3%).ERCP interventions included endoscopic sphincterotomy,endoscopic retrograde biliary or pancreatic drainage,stone extraction,etc.Procedure-related complications were observed in 12 patients and included post-ERCP pancreatitis(9/75,12.0%),gastrointestinal bleeding(1/75,1.3%),and infection(2/75,2.7%).During a mean follow-up period of 46 mo(range:2 to 134 mo),ERCP therapy alleviated the biliary obstruction and reduced the incidence of pancreatitis.The overall effective rate of ERCP therapy was 82.4%;seven patients(9.3%)were lost to follow-up,eight(11.8%)re-experienced pancreatitis,and eleven(16.2%)underwent radical surgery,known as prophylactic excision of the extrahepatic bile duct and hepaticojejunostomy.CONCLUSION ERCP is a safe and effective treatment option to relieve biliary or pancreatic obstruction in symptomatic PBM,with the characteristics of minor trauma,fewer complications,and repeatability. | Jing-Qing Zeng Zhao-Hui Deng Kai-Hua Yang Tian-Ao Zhang Wen-Yu Wang Jian-Mei Ji Ya-Bin Hu Chun-Di Xu Biao Gong | 2019 | World Journal of Gastroenterology2019，25，40： | 17 |
| 4 | Biological properties of neural progenitor cells isolated from the hippocampus of adult cynomolgus monkeys显示文摘Background The existence of neurogenesis in the hippocampus of adult nonhuman primates has been confirmed in recent years, however, the biological properties of adult neural stem cells or neural progenitor cells (NPCs) from this region remain to be extensively explored. The present work was to investigate on the expansion of NSCs/NPCs from the hippocampus of adult cynomolgus monkeys and the examination of their characteristics in vitro. Methods NPCs isolated from the hippocampus of adult cynomolgus monkeys were expanded in vitro in serum-free media containing growth factors, and were then allowed to differentiate by removing mitotic factors. The expansion capacity of NPCs and their differentiation potential were assayed by immunohistochemical and immunocytochemical analysis. Results During primary culture, NPCs underwent cell division, proliferation and aggregation to form neurospheres that were growing in suspension. Without mitotic stimulation, most neurospheres adhered to the culture dish and started to differentiate. Eventually, nearly 12% of the differentiated cells expressed neuron specific marker-βIII-tubulin (Tuj1) and 84% expressed astrocyte specific marker-fibrillary acidic protein (GFAP). In addition, the expression of a neural stem cell marker, nestin, was found both in NPCs and in the subgranular zone of adult monkey hippocampus, where NPCs were originally derived. Conclusions NPCs from the hippocampus of adult cynomolgus monkeys can be expanded to some extent in vitro and are capable of differentiating into neurons and astrocytes. Further experiments to promote the in vitro proliferation capacity of NPCs will be required before adult NPCs can be used as a useful cell model for studying adult neurogenesis and cell replacement therapy using adult stem cells. | YUE Feng CHEN Biao WU Di DONG Kai ZENG Si-en ZHANG Yu | 2006 | Chinese Medical Journal2006，，2： | 16 |
| 5 | Complement C3 activation regulates the production of tRNA-derived fragments Gly-tRFs and promotes alcohol-induced liver injury and steatosis显示文摘Complement is known to play a role in alcoholic fatty liver disease (AFLD), but the underlying mechanisms are poorly understood, thereby constraining the development of a rational approach for therapeutic intervention in the complement system. C3 deficiency has been shown to impart protective effects against ethanol-induced hepatic steatosis and inflammation. Here we demonstrate a protection effect in wild-type mice by treatment with CR2-Crry, a specific inhibitor of C3 activation. The expression of glycine transfer (t) RNA-derived fragments (Gly-tRFs) is upregulated in ethanol-fed mice and inhibition of Gly-tRFs in vivo decreases chronic ethanol feeding-induced hepatosteatosis without affecting inflammation. The expression of Gly-tRF was downregulated in C3-deficient or CR2-Crry-treated mice, but not in C5-deficient mice;Gly-tRF expression was restored by the C3 activation products C3a or Asp (C3a-des-Arg) via the regulation of CYP2E1. Transcriptome profiling of hepatic tissues showed that Gly-tRF inhibitors upregulate the expression of sirtuin1 (Sirt1) and subsequently affect downstream lipogenesis and β-oxidation pathways. Mechanistically, Gly-tRF interacts with AGO3 to downregulate Sirt1 expression via sequence complementarity in the 3′ UTR. Notably, the expression levels of C3d, CYP2E1 and Gly-tRF are upregulated, whereas Sirt1 is decreased in AFLD patients compared to healthy controls. Collectively, our findings suggest that C3 activation products contribute to hepatosteatosis by regulating the expression of Gly-tRF. Complement inhibition at the C3 activation step and treatment with Gly-tRF inhibitors may be potential and precise therapeutic approaches for AFLD. | Fudi Zhong Zhigao Hu Keqing Jiang Biao Lei Zhan Wu Guandou Yuan Hongliang Luo Chunqiang Dong Bo Tang Chaowen Zheng Shuai Yang Yonglian Zeng Zhenya Guo Shuiping Yu Huizhao Su Guo Zhang Xiaoqiang Qiu Stephen Tomlinson Songqing He | 2019 | Cell Research2019，29，7： | 14 |
| 6 | Use of land's cooperative object to estimate UAV's pose for autonomous landing显示文摘The research of unmanned aerial vehicles’(UAVs’)autonomy navigation and landing guidance with computer vision has important signifcance.However,because of the image blurring,the position of the cooperative points cannot be obtained accurately,and the pose estimation algorithms based on the feature points have low precision.In this research,the pose estimation algorithm of UAV is proposed based on feature lines of the cooperative object for autonomous landing.This method uses the actual shape of the cooperative-target on ground and the principle of vanishing line.Roll angle is calculated from the vanishing line.Yaw angle is calculated from the location of the target in the image.Finally,the remaining extrinsic parameters are calculated by the coordinates transformation.Experimental results show that the pose estimation algorithm based on line feature has a higher precision and is more reliable than the pose estimation algorithm based on points feature.Moreover,the error of the algorithm we proposed is small enough when the UAV is near to the landing strip,and it can meet the basic requirements of UAV’s autonomous landing. | Xu Guili Qi Xiaopeng Zeng Qinghua Tian Yupeng Guo Ruipeng Wang Biao | 2013 | Chinese Journal of Aeronautics2013，26，6： | 8 |
| 7 | Planning and analysis of the demonstration project of the MVDC distribution network in Zhuhai显示文摘The DC distribution system is an important development direction of the distribution system,which can improve the reliability and the quality of the power supply,and support the new energy,the energy storage,the electric vehicles,and the flexible access of AC and DC loads to grid.To realize the demonstration application of the DC distribution technology,China's first demonstration project of the medium voltage DC distribution network will be built in Zhuhai,Guangdong Province to support the construction of the city energy internet.First,this paper analyzes the demand of the DC distribution network project,and puts forward the construction content and construction target.Then,it designs and analyzes the electrical connection mode,system operation mode,and startup and shutdown mode of the DC distribution network,and proposes the overall project construction plan.Finally,it conducts the specific project design and analysis,which mainly in elude the selection of equipment such as inverters,DC transformers and DC circuit breakers,the design and analysis of the DC control and protection system,the design and analysis of the overvoltage protection and the configuration scheme of the lightning arrester,and analysis of the system transient characteristics.The design and analysis of the engineering program is a combination of China's distribution network engineering practice and technical characteristics,which lays a solid foundation for the advancement of the DC power distribution technology in China,and has reference value and demonstration effect for the design and construction of other projects. | Lu QU Zhanqing YU Qiang SONG Zhichang YUAN Biao ZHAO Dawei YAO Jianfu CHEN Yao LIU Rong ZENG | 2019 | Frontiers in Energy2019，13，1： | 7 |
| 8 | Oral bacteria colonize and compete with gut microbiota in gnotobiotic mice显示文摘The oral microbiota is associated with oral diseases and digestive systemic diseases.Nevertheless,the causal relationship between them has not been completely elucidated,and colonisation of the gut by oral bacteria is not clear due to the limitations of existing research models.The aim of this study was to develop a human oral microbiota-associated (HOMA) mouse model and to investigate the ecological invasion into the gut.By transplanting human saliva into germ-free (GF) mice,a HOMA mouse model was first constructed.16S rRNA gene sequencing was used to reveal the biogeography of oral bacteria along the cephalocaudal axis of the digestive tract.In the HOMA mice,84.78% of the detected genus-level taxa were specific to the donor.Principal component analysis (PCA) revealed that the donor oral microbiota clustered with those of the HOMA mice and were distinct from those of specific pathogen-free (SPF) mice.In HOMA mice,OTU counts decreased from the stomach and small intestine to the distal gut.The distal gut was dominated by Streptococcus,Veillonella,Haemophilus,Fusobacterium,Trichococcus and Actinomyces.HOMA mice and human microbiota-associated (HMA) mice along with the GF mice were then cohoused.Microbial communities of cohoused mice clustered together and were significantly separated from those of HOMA mice and HMA mice.The Source Tracker analysis and network analysis revealed more significant ecological invasion from oral bacteria in the small intestines,compared to the distal gut,of cohoused mice.In conclusion,a HOMA mouse model was successfully established.By overcoming the physical and microbial barrier,oral bacteria colonised the gut and profiled the gut microbiota,especially in the small intestine. | Bolei Li Yang Ge Lei Cheng Benhua Zeng Jinzhao Yu Xian Peng Jianhua Zhao Wenxia Li Biao Ren Mingyun Li Hong Wei Xuedong Zhou | 2019 | International Journal of Oral Science2019，11，3： | 7 |
| 9 | Molecular and Epidemiological Characterization of Infant Botulism in Beijing, China显示文摘Laboratory-based pathogen isolation, identification, and toxicity determination were performed on samples from a suspected case of infant botulism. Mice injected with cultures generated from the enema sample and ingested Powered infant formula(PIF) presented typical signs of botulism. Antitoxins to polyvalent botulinum neurotoxins(BoNTs) and monovalent BoNT type B antitoxin had protective effects. Clostridium botulinum isolated from the enema and residual PIF samples were positive for type B toxin. Pulsed-field gel electrophoresis(PFGE) revealed that the two strains of C. botulinum isolated from the two samples produced indistinguishable pulsotypes. These findings confirmed this case of type B infant botulism associated with the ingestion of PIF contaminated by type B C. botulinum spores. | DONG Yin Ping WANG Wei JIANG Tao XU Jin HAN Chun Hui YAN Shao Fei Séamus Fanning LI Ying MA Xiao Chen ZHANG Di ZHAO Yao ZENG Biao LI Feng Qin | 2017 | Biomedical and Environmental Sciences2017，30，6： | 4 |
| 10 | Numerical studies of the hydrodynamic damping of a vibrating hydrofoil in torsional mode显示文摘The vortex-induced vibration may lead to a premature failure of hydraulic mechanical systems,especially under the resonance condition in the torsional mode.To predict the structural fatigue life,a careful consideration of the dynamic response to the hydraulic excitations is essential in the design phase.This study focuses on the numerical investigation of the relationship between the flow velocity,the added mass and the hydrodynamic damping,particularly,with respect to a Donaldson-type hydrofoil,vibrating in the first torsional mode.A two-way fluid-structure interaction(FSI)method is used to predict above two parameters.The flow velocity is in the range of 0 m/s-20m/s.To evaluate the hydrodynamic damping ratio,an identification method is proposed,based on a modified version of the logarithmic decay method.The relative deviations of the simulated natural frequencies and hydrodynamic damping ratios as compared with the experimental data for the first torsional modes,are within 8.1%and 16.6%,respectively.The analysis results show that the added mass coefficient for the first torsional mode is in the range of 1.59-1.86,and is around 44%of that for the first bending mode.The trends of the boundary layer thickness and the wake width against the reduced velocity are found to be opposite to that of the hydrodynamic damping ratio.The theoretical equation for predicting the hydrodynamic damping ratio is modified,which is shown to be more reliable due to its consideration of the velocity independent hydrodynamic damping phase. | Yong-shun Zeng Zhi-feng Yao Biao Huang Fu-jun Wang Qin Wu Ruo-fu Xiao Guo-yu Wang | 2021 | Journal of Hydrodynamics2021，33，2： | 4 |
| 11 | Facile synthesis of zinc-based organic framework for aqueous Hg (Ⅱ) removal: Adsorption performance and mechanism显示文摘Mercury(Hg)ions can lead to a serious impact on the environment;therefore,it was necessary to find an effective method for absorbing these toxic Hg ions.Here,the adsorbent(Zn-AHMT)was synthesized from zinc nitrate and 4-amino 3-hydrazine-5 mercapto-1,2,4-triazole(AHMT)by one-step method and,characterized the microstruc-ture and absorption performance by fourier transform infrared spectroscopy(FTIR),field emission scanning electron microscopy(FESEM),X-ray diffraction(XRD),Brunauer-Emmett Teller(BET),Thermal Gravimetric Analyzer(TGA)and X-ray photoelectron spectroscopy(XPS).Through a plethora of measurements,we found that the maximum adsorption capacity was 802.8 mg/g when the optimal pH of Zn-AHMT was 3.0.The isothermal and kinetic experiments confirm that the reaction process of Zn-AHMT was chemisorption,while the adsorption process conforms to the Hill model and pseudo second order kinetic model.Thermodynamic experiments showed that the adsorption process was spontaneous and exothermic.Selective experiments were performed in the simulated wastewater containing Mn,Mg,Cr,Al,Co,Ni,Hg ions.Our results showed that the Zn-AHMT has a stronger affinity for Hg ions.The removal rate of Zn-AHMT remained above 98%,indicating that the Zn-AHMT had a good stability validated by three adsorption-desorption repeatable tests.According to the XPS results,the adsorption reaction of Zn-AHMT was mainly attributed to the chelation and ion exchange.This was further explained by both density functional theory(DFT)calculation and frontier molecular orbital theory.We therefore propose the adsorption mechanism of Zn-AHMT.The adsorption reaction facilitates via the synergistic action of S and N atoms.Moreover,the bonding between the adsorbent and the N atom has been proved to be more stable.Our study demonstrated that Zn-AHMT had a promising application prospect in mercury removal. | Biao Zeng Wei Wang Sijin He Guo Lin Wenjia Du Jun Chang Zhao Ding | 2021 | Nano Materials Science2021，3，4： | 3 |
| 12 | Observation of double indirect interlayer exciton in MoSe_(2)/WSe_(2) heterostructure显示文摘Interlayer excitons(IXS)are electron–hole pairs bound in the spatial separation layer by the Coulomb effect,and their lifetime is several orders of magnitude longer than that of direct excitons,providing an essential platform for long-lived exciton devices.The recent emergence of the van der Waals heterostructure(HS),which combines two layers of different transitional metal dichalcogenides(TMDs),has created new opportunities for IX research.Herein,we demonstrate the observation of double indirect interlayer excitons in the MoSe_(2)/WSe_(2)HS using photoluminescence(PL)spectroscopy.The intensities of the two peaks are essentially the same,and the energy difference is 22 meV,which is perfectly in line with the calculation result of density functional theory.Furthermore,the experience of variable excitation power also proves that the splitting of the IXs originates from the conduction band spin-splitting of MoSe_(2).The observation results provide a promising platform for further exploring the new physical properties and optoelectronic phenomena of TMD HS. | Biao Wu Yunpeng Wang Jiahong Zhong Cheng Zeng Yassine Madoune Wanting Zhu Zongwen Liu Yanping Liu | 2022 | Nano Research2022，15，3： | 3 |
| 13 | Growth of magnetic metals on carbon microspheres with synergetic dissipation abilities to broaden microwave absorption显示文摘Microwave absorption(MA) materials have been captured extensive attentions due to the serious electromagnetic(EM) pollution. Numerous interests focus on the MA performances of core-shell structural composites with magnetic constituents as cores and dielectric constituents as shells, which inevitably suppressed the magnetic coupling causing the decrease of magnetic loss to some extent. Herein, the coreshell structural carbon(C) microsphere/magnetic metal composites were fabricated through the combination of an electrostatic assembly approach and subsequent in-situ reduction reaction. The complex permittivity and permeability of core-shell C@magnetic metal composite system can be effective adjusted by the constituent and microstructure of shells. Thanks to the distinct magnetic coupling from the subtle designed structures and the promotion of the magnetic-dielectric synergy, the C@magnetic metal composite exhibited enhanced MA properties. The optimal reflection loss(RL) of C@Ni composite was-54.1 dB with a thickness of 3.4 mm, meanwhile the effective absorbing band could reach over 5.5 GHz at only a1.8 mm thickness. Broad absorption bandwidth with RL below-10 d B could achieve 6.0 GHz and 6.7 GHz for C@Co and C@Ni Co composites with a thin 2.1 mm thickness, respectively. Our exciting findings might lead a guide on the novel structure design for the functional core-shell structural composites used for microwave absorption. | Biao Zhao Yang Li Qingwen Zeng Bingbing Fan Lei Wang Rui Zhang Renchao Che | 2022 | Journal of Materials Science & Technology2022，，12： | 3 |
| 14 | Super-assembled core-shell mesoporous silica-metal-phenolic network nanoparticles for combinatorial photothermal therapy and chemotherapy显示文摘Multimodal combinatorial therapy merges different modes of therapies in one platform,which can overcome several clinical challenges such as premature drug loss during blood circulation and significantly improve treatment efficiency.Here we report a combinatorial therapy nanoplatform that enables dual photothermal therapy and pH-stimulus-responsive chemotherapy.By super-assembly of mesoporous silica nanoparticles(MSN)with metal-phenolic networks(MPN),anti-cancer drugs can be loaded in the MSN matrix,while the outer MPN coating allows dual photothermal and pH-responsive properties.Upon near-infrared light irradiation,the MSN@MPN nanoplatform exhibits excellent photothermal effect,and demonstrates outstanding pH-triggered drug release property.In vitro cell experiments suggest the MSN@MPN system exhibits superior biocompatibility and can effectively kill tumor cells after loading anti-cancer drugs.Consequently,the MSN@MPN system shows promising prospects in clinical application for tumor therapy. | Bo Yang Shan Zhou Jie Zeng Liping Zhang Runhao Zhang Kang Liang Lei Xie Bing Shao Shaoli Song Gang Huang Dongyuan Zhao Pu Chen Biao Kong | 2020 | Nano Research2020，13，4： | 3 |
| 15 | Spectral Characterization of the Edge-Deleted Subgraphs of Complete Graph显示文摘In this paper,we show that some edges-deleted subgraphs of complete graph are determined by their spectrum with respect to the adjacency matrix as well as the Laplacian matrix. | Ting Zeng WU Sheng Biao HU | 2010 | Journal of Mathematical Research and Exposition2010，30，5： | 2 |
| 16 | CircTUBD1 Regulates Radiation-induced Liver Fibrosis Response via a circTUBD1/micro-203a-3p/Smad3 Positive Feedback Loop显示文摘Background and Aims: Radiation-induced liver fibrosis (RILF), delayed damage to the liver (post-irradiation) re-mains a major challenge for the radiotherapy of liver ma-lignancies. This study investigated the potential function and mechanism of circTUBD1 in the development of RILF. Methods: By using a dual luciferase assay, RNA pull- down assays, RNA sequencing, chromatin immunoprecipi-tation (known as ChIP) assays, and a series of gain- or loss-of-function experiments, it was found that circTUBD1 regulated the activation and fibrosis response of LX-2 cells induced by irradiation via a circTUBD1/micro-203a-3p/ Smad3 positive feedback loop in a 3D system. Results: Knockdown of circTUBD1 not only reduced the expression of α-SMA, as a marker of LX-2 cell activation, but also significantly decreased the levels of hepatic fibrosis mol-ecules, collagen type I alpha 1 (COL1A1), collagen type III alpha 1 (COL3A1), and connective tissue growth factor (CTGF) in a three-dimensional (3D) culture system and RILF model in vivo. Notably, knockdown of circTUBD1 al-leviated early liver fibrosis induced by irradiation in mice models. Conclusions: This study is the first to reveal the mechanism and role of circTUBD1 in RILF via a circTUBD1/ micro-203a-3p/Smad3 feedback loop, which provides a novel therapeutic strategy for relieving the progression of RILF. | Hao Niu Li Zhang Biao Wang Guang-Cong Zhang Juan Liu Zhi-Feng Wu Shi-Suo Du Zhao-Chong Zeng | 2022 | Journal of Clinical and Translational Hepatology2022，10，4： | 2 |
| 17 | Suppressing laser phase noise in an optomechanical system显示文摘We propose a scheme to suppress the laser phase noise without increasing the optomechanical single-photon coupling strength.In the scheme,the parametric amplification terms,created by Kerr and Duffing nonlinearities,can restrain laser phase noise and strengthen the effective optomechanical coupling,respectively.Interestingly,decreasing laser phase noise leads to increasing thermal noise,which is inhibited by bringing in a broadband-squeezed vacuum environment.To reflect the superiority of the scheme,we simulate quantum memory and stationary optomechanical entanglement as examples,and the corresponding numerical results demonstrate that the laser phase noise is extremely suppressed.Our method can pave the way for studying other quantum phenomena. | Yexiong Zeng Biao Xiong Chong Li | 2022 | Frontiers of physics2022，17，1： | 2 |
| 18 | Thermal and elemental analysis of the combustion chamber deposits in a large-scale two-stroke marine diesel engine显示文摘It is of significance to understand the chemical content of carbon deposits in the large-scale two-stroke(LSTS) marine diesel engine because of adverse effect on the engine performance, oil consumption and emissions. In this work, two different combustion chamber deposits in an LSTS marine diesel engine were studied using thermogravimetry analysis(TGA), elemental analysis(EA) and synchrotron X-ray fluorescence(SXRF). One was on the piston top and the other on the piston land, termed PTCD and PLCD, respectively. For the PTCD sample, the 97% residue in the TGA and 1.4% carbon content in the EA indicated the main compositions of PTCD were metal salts or oxides and ashes, significantly different from the previous findings of the highest carbon content in deposits from the small four stroke engines. The different chemical content between PTCD and PLCD implied higher thermal load in the LSTS marine diesel engine led to a nearly complete thermal decomposition of PTCD. The higher calcium content in PTCD and PLCD indicated the additives of cylinder oil should be the main source of metal content of PTCD and PLCD. Calcium distribution in the SXRF results was indicative of the potential layered structure in PTCD and PLCD. In addition, the appearance of iron on the surface against the piston in PTCD and PLCD indicated iron oxides formation between carbon deposit and piston materials. | ZHANG XuSheng ZENG XiangMing SUN XiuCheng DENG Biao PENG GuanYun XIE HongLan WU ZhiJun XIAO TiQiao | 2015 | Science China(Technological Sciences)2015，58，10： | 2 |
| 19 | Micro-arc Oxidation Inverter Power Supply Based on the Limited Bipolar Soft-switch Control Method显示文摘In order to overcome many limitations of the conventional power supplies, such as ponderosity, big wastage, and simplex output characteristic, a dual-inverter power supply is designed to meet the different requirements of micro-arc oxidation. The main circuit structure and principle of the dual-inverter power supply for micro-arc oxidation is described, the control system and the control adjustment method are also introduced. The dual-inverter technology is adopted in micro-arc oxidation power supply. The limited bipolar control mode is applied in the power inverter circuit for adjusting the voltage, and various voltage waveform can be obtained by controlling the chopper circuit. Meanwhile, the control accuracy and response speed are improved greatly because of the higher inverter frequency. The power supply can output direct current(DC) waveform, DC pulse waveform, symmetry alternating current(AC) waveform, asymmetry AC waveform, and so on. Besides, the parameters such as pulse width, range, frequency, duty cycle can be adjusted. The experimental result shows that the power supply has many advantages, such as stable output,wonderful waveform consistency and obvious advantage in technique, and it can meet the requirements of micro-arc oxidation process fully. | ZENG Min CHEN Xiaohong CAO Biao | 2009 | Chinese Journal of Mechanical Engineering2009，22，3： | 2 |
| 20 | Epidemiological Survey of Hemoglobinopathies Based on Next-Generation Sequencing Platform in Hunan Province,China显示文摘Objective This study was aimed at investigating the carrier rate of,and molecular variation in,α-andβ-globin gene mutations in Hunan Province.Methods We recruited 25,946 individuals attending premarital screening from 42 districts and counties in all 14 cities of Hunan Province.Hematological screening was performed,and molecular parameters were assessed.Results The overall carrier rate of thalassemia was 7.1%,including 4.83%forα-thalassemia,2.15%forβ-thalassemia,and 0.12%for bothα-andβ-thalassemia.The highest carrier rate of thalassemia was in Yongzhou(14.57%).The most abundant genotype ofα-thalassemia andβ-thalassemia was-α^(3.7)/αα(50.23%)andβ^(IVS-Ⅱ-654)/β^(N)(28.23%),respectively.Fourα-globin mutations[CD108(ACC>AAC),CAP+29(G>C),Hb Agrinio and Hb Cervantes]and sixβ-globin mutations[CAP+8(C>T),IVS-Ⅱ-848(C>T),-56(G>C),beta nt-77(G>C),codon 20/21(-TGGA)and Hb Knossos]had not previously been identified in China.Furthermore,this study provides the first report of the carrier rates of abnormal hemoglobin variants andα-globin triplication in Hunan Province,which were 0.49%and 1.99%,respectively.Conclusion Our study demonstrates the high complexity and diversity of thalassemia gene mutations in the Hunan population.The results should facilitate genetic counselling and the prevention of severe thalassemia in this region. | XI Hui LIU Qin XIE Dong Hua ZHOU Xu TANG Wang Lan TANG De Guo ZENG Chun Yan WANG Qiong NIE Xing Hui PENG Jin Ping GAO Xiao Ya WU Hong Liang ZHANG Hao Qing QIU Li FENG Zong Hui WANG Shu Yuan ZHOU Shu Xiang HE Jun ZHOU Shi Hao ZHOU Fa Qun ZHENG Jun Qing WANG Shun Yao CHEN Shi Ping ZHENG Zhi Fen MA Xiao Yuan FANG Jun Qun LIANG Chang Biao WANG Hua | 2023 | Biomedical and Environmental Sciences2023，36，2： | 1 |
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