|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Mode-locked 2.8-μm fluoride fiber laser:from soliton to breathing pulse显示文摘The mode-locked fluoride fiber laser(MLFFL)is an exciting platform for directly generating ultrashort pulses in the mid-infrared(mid-IR).However,owing to difficulty in managing the dispersion in fluoride fiber lasers,MLFFLs are restricted to the soliton regime,hindering pulse-energy scaling.We overcame the problem of dispersion management by utilizing the huge normal dispersion generated near the absorption edge of an infrared-bandgap semiconductor and promoted MLFFL from soliton to breathing-pulse mode-locking.In the breathing-pulse regime,the accumulated nonlinear phase shift can be significantly reduced in the cavity,and the pulse-energy-limitation effect is mitigated.The breathing-pulse MLFFL directly produced a pulse energy of 9.3 nJ and pulse duration of 215 fs,with a record peak power of 43.3 kW at 2.8μm.Our work paves the way for the pulse-energy and peak-power scaling of mid-IR fluoride fiber lasers,enabling a wide range of applications. | Zhipeng Qin Guoqiang Xie Hongan Gu Ting Hai Peng Yuan Jingui Ma Liejia Qian | 2019 | Advanced Photonics2019，1，6： | 9 |
| 2 | Biodiversity-based development and evolution:the emerging research systems in model and non-model organisms显示文摘Evolutionary developmental biology,or Evo-Devo for short,has become an established field that,broadly speaking,seeks to understand how changes in development drive major transitions and innovation in organismal evolution.It does so via integrating the principles and methods of many subdisciplines of biology.Although we have gained unprecedented knowledge from the studies on model organisms in the past decades,many fundamental and crucially essential processes remain a mystery.Considering the tremendous biodiversity of our planet,the current model organisms seem insufficient for us to understand the evolutionary and physiological processes of life and its adaptation to exterior environments.The currently increasing genomic data and the recently available gene-editing tools make it possible to extend our studies to non-model organisms.In this review,we review the recent work on the regulatory signaling of developmental and regeneration processes,environmental adaptation,and evolutionary mechanisms using both the existing model animals such as zebrafish and Drosophila,and the emerging nonstandard model organisms including amphioxus,ascidian,ciliates,single-celled phytoplankton,and marine nematode.In addition,the challenging questions and new directions in these systems are outlined as well. | Long Zhao Feng Gao Shan Gao Yujun Liang Hongan Long Zhiyi Lv Ying Su Naihao Ye Liusuo Zhang Chengtian Zhao Xiaoyu Wang Weibo Song Shicui Zhang Bo Dong | 2021 | Science China(Life Sciences)2021，64，8： | 9 |
| 3 | Experimental study on combustion characteristics of Chinese RP-3 kerosene显示文摘In order to illustrate the combustion characteristics of RP-3 kerosene which is widely used in Chinese aero-engines, the combustion characteristics of RP-3 kerosene were experimentally investigated in a constant volume combustion chamber. The experiments were performed at four different pressures of 0.1 MPa, 0.3 MPa, 0.5 MPa and 0.7 MPa, and three different temperatures of 390 K,420 K and 450 K, and over the equivalence ratio range of 0.6–1.6. Furthermore, the laminar combustion speeds of a surrogate fuel for RP-3 kerosene were simulated under certain conditions. The results show that increasing the initial temperature or decreasing the initial pressure causes an increase in the laminar combustion speed of RP-3 kerosene. With the equivalence ratio increasing from 0.6 to 1.6, the laminar combustion speed increases initially and then decreases gradually.The highest laminar combustion speed is measured under fuel rich condition(the equivalence ratio is 1.2). At the same time, the Markstein length shows the same changing trend as the laminar combustion speed with modification of the initial pressure. Increasing the initial pressure will increase the instability of the flame front, which is established by decreased Markstein length. However, different from the effects of the initial temperature and equivalence ratio on the laminar combustion speed,increasing the equivalence ratio will lead to a decrease in the Markstein length and the stability of the flame front, and the effect of the initial temperature on the Markstein length is unclear. Furthermore, the simulated laminar combustion speeds of the surrogate fuel agree with the corresponding experimental datas of RP-3 kerosene within 10% deviation under certain conditions. | Ma Hongan Xie Maozhao Zeng Wen Chen Baodong | 2016 | Chinese Journal of Aeronautics2016，29，2： | 9 |
| 4 | Synthesis of growth-type polycrystalline diamond compact (PDC) using the solvent Fe_(55)Ni_(29)Co_(16) alloy under HPHT显示文摘A growth-type polycrystalline diamond compact (PDC) was synthesized under high temperature and high pressure (HPHT). The infiltration technique was used with an Fe55Ni29Co16 (KOV) alloy as the sintering solvent. The morphology and weight ratio of the PDC were investigated through scanning electron microscopy (SEM) and electron dispersion spectroscopy (EDS). Note that the KOV alloy evenly infiltrated throughout the polycrystalline diamond (PCD) layer and WC-Co substrate in a short sintering time due to its low viscosity and high soakage capability. A transition layer confirmed the presence of the MxC phase near the interface of the PDC, which can make the diamond layer and WC-Co substrate combine as a complex material. X-ray diffraction (XRD) performed on the PCD layer confirmed the presence of cubic diamond, WC, cubic CoCx, the high temperature cubic phase of α-Co, the alloy phase of FeNix, and no graphite phase. Besides, a surface residual stress of the PCD layer, measured with reasonable accuracy using micro-Raman spectroscopy, is found to be a homogeneous compressive stress with an average value of 0.16 GPa, much lower than that of the powders-mixing method. | JIA HongSheng JIA XiaoPeng MA HongAn LI HaiBo | 2012 | Science China(Physics,Mechanics & Astronomy)2012，55，8： | 9 |
| 5 | Effect of additive boron on type-Ib gem diamond single crystals synthesized under HPHT显示文摘The boron-doped type-Ib gem diamond crystals were synthesized successfully by adding amorphous boron into a system of graphite and Kovar catalyst under high pressure and high temperature (HPHT).The effect of additive boron on type-Ib gem diamond was extensively studied including the growth characteristic,morphology and nitrogen concentration.The synthesized boron-doped type-Ib gem diamond crystals were characterized by optical microscope (OM),scanning electron microscope (SEM) and infrared spectrometer (IR).The results show that the growth region of the {111} face becomes wide,whereas the growth region of the {100} face becomes narrow and nearly disappears as increasing additive boron in the sample.The crystal will be opaque and imperfect,and the concentration of nitrogen will be decreased when the boron atoms are incorporated into gem diamond lattice.These techniques are very important and will be widely applied. | MA LiQiu MA HongAn XIAO HongYu LI ShangSheng LI Yong JIA XiaoPeng | 2010 | Chinese Science Bulletin2010，55，8： | 8 |
| 6 | HPHT preparation and Micro-Raman characterization of polycrystalline diamond compact with low residual stress显示文摘High quality grown polycrystalline diamond compact (PDC) with low residual stress was prepared using the infiltration method with nickel based alloys as the solvent under high temperature and high pressure (HPHT). Scanning electron microscopy (SEM) was used to observe the micro morphology of the diamond layer and the diamond/WC substrate interface. It was found that dense and interlaced microstructure with diamond-diamond (D-D) direct bonding formed in the diamond layer of PDC. Micro-Raman spectroscopy was used to measure the Raman shift of diamonds in the polycrystalline diamond (PCD) layer and the residual stress was calculated based on the Raman shift of diamonds. Experimental results show that the residual stress of PCD layer is compressive stress, and the range of the residual stress is from 0.075 to 0.250 GPa in the whole PCD layer, much lower than that of other reports (up to 1.400 GPa). Moreover, the distribution of the residual stress from the diamond surface layer to the inner cross-section is homogeneous. | JIA HongSheng, MA HongAn, GUO Wei & JIA XiaoPeng* National Laboratory of Superhard Materials, Jilin University, Changchun 130012, China | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，8： | 7 |
| 7 | Study on growth of coarse grains of diamond with high quality under HPHT显示文摘The growth of coarse grains of diamond was observed with graphite as carbon source and Fe80Ni20 alloy powder as catalyst at HPHT in a China-type SPD 6×1670T cubic high-pressure apparatus with highly exact control system. To synthesize coarse grains of diamond crystal with high quality,ad-vanced indirect heat assembly,powder catalyst technology and catalyst with optimal granularity were used. Especially the nucleation of diamond and the growth rate were strictly controlled by the opti-mized synthesis craft. At last,diamond crystals (about 0.85 mm) in the perfect hex-octahedron shape were successfully synthesized at ~5.4 GPa and ~1360℃ in 60 min. The characteristic of crystal growth with powder catalyst technology under HPHT was discussed. The results and techniques might be useful for production of coarse grains of diamond. | ZHOU ShengGuo ZANG ChuanYi MA HongAn LI XiaoLei ZHANG HeMin JIA XiaoPeng | 2009 | Chinese Science Bulletin2009，54，1： | 6 |
| 8 | Effects of Ti additive on HPHT diamond synthesis in Fe-Ni-C system显示文摘Diamond crystals with low nitrogen concentration were synthesized from the Fe-Ni-C system with Ti additive at high pressure and high temperature (HPHT) in a china-type cubic high pressure apparatus (CHPA). The synthesis pressure range was 4.8-5.2 GPa, and the temperature range was 1420-1600 K. The lowest synthesis pressure for diamond fell first and then rose with the increase of Ti additive. The color, shape, surface morphology and nitrogen impurity concentration of the synthesized diamond crystals were characterized using optical microscopy (OM), scanning electron microscopy (SEM) and micro Fourier transform infrared (FTIR) spectrometry. The results show that the Ti additive has significant effects on color, growth rate, crystal shape, surface morphology and nitrogen impurity con- centration of the synthesized diamond crystals. The color of diamond crystals synthesized without Ti additive is yellow, while that with Ti additive becomes light and nearly colorless. The growth rate without Ti additive is higher than that with Ti additive. The crystal shapes of as-grown diamond crystals vary with the increase of Ti additive. The {111} crystal faces become dominant and some {311} crystal faces appear with the increase of Ti additive. The concentration of nitrogen impurity in diamond crystals without Ti additive is higher than that with Ti additive. | HAN Wei JIA XiaoPeng JIA HongSheng HU MeiHua HUANG HaiLiang LIU XiaoBing MA HongAn | 2009 | Chinese Science Bulletin2009，54，17： | 6 |
| 9 | Effects of carbon diffusing field in alloy solvent on the growth of tower-shape diamond single crystal显示文摘High-quality type-Ib tower-shape diamond single crystals were synthesized in cubic anvil high pressure apparatus (SPD-6×1200) at 5.4 GPa and 1250-1450°C. The (100) face of seed crystal was used as the growth face, and FeNiMnCo alloy was used as the solvent/catalyst. Two kinds of carbon diffusing fields (type-B and type-G) were simulated by finite element method (FEM). Using the two kinds of carbon diffusing fields, many diamond single crystals were synthesized. The effects of carbon diffusing fields on the crystal quality and β value (the ratio of height to diameter of diamond crystal) were studied. The results show that using type-B diffusing field, considerable inclusions appeared in tower-shape diamond crystals with high β values; however, using type- G diffusing field, inclusions were reduced markedly in high β values tower-shape diamond crystals, and the crystal, up to 0.6 carat in weight and 5.3 mm in size, was synthesized. Experimental phenomena were explained well with the help of the FEM. | XIAO HongYu MA HongAn TIAN Yu LI Rui LI ShangSheng MA LiQiu LI Yong JIA XiaoPeng | 2010 | Chinese Science Bulletin2010，55，1： | 5 |
| 10 | Dependence of nitrogen concentration in type Ib diamonds on synthesis temperature显示文摘Type Ib diamonds were grown by the temperature gradient method (TGM) at 5.5 GPa and 1500-1560 K in a china-type cubic anvil high pressure apparatus using Ni70Mn25Co5 alloy as solvent/catalyst. The concentration of nitrogen (CN) in type Ib diamonds synthesized at different synthesis temperatures was measured by a Fourier transform infrared (FTIR) spectrometer. The dependence of CN in diamond on synthesis temperature was studied. For the type Ib diamonds synthesized using Ni70Mn25Co5 as catalyst, its CN decreases along with the increase of synthesis temperature. | TIAN Yu JIA XiaoPeng ZANG ChuanYi LI ShangSheng XIAO HongYu ZHANG YaFei HUANG GuoFeng LI Rui HAN QiGang MA LiQiu LI Yong CHEN XiaoZhou ZHANG Chong MA HongAn | 2009 | Chinese Science Bulletin2009，54，9： | 5 |
| 11 | FEM analysis on the effect of cobalt content on thermal residual stress in polycrystalline diamond compact(PDC)显示文摘Thermal residual stress in Polycrystalline Diamond Compacts(PDCs) is mainly caused by the mismatch in the Coefficients of Thermal Expansion(CTE) between the polycrystalline diamond(PCD) layer and WC-Co substrate.In the PCD layer,the CTE of cobalt exhibit magnitudes four times larger than those of diamond.Cobalt content in the PCD layer has important effects on the thermal residual stress of PDCs.In this work,the effects of cobalt content on thermal residual stress in PCDs were investigated by the Finite Element Method(FEM).The simulation results show that the thermal residual stress decreases firstly,and then increases with increasing cobalt content(1 vol.%-20 vol.%),which reaches a minimum value when the cobalt content is about 10 vol.%.The FEM analysis results are in agreement with our experimental results.It will provide an effective method for further designing and optimizing PDC properties. | LI ZhanChang JIA HongSheng MA HongAn GUO Wei LIU XiaoBing HUANG GuoFeng LI Rui JIA XiaoPeng | 2012 | Science China(Physics,Mechanics & Astronomy)2012，55，4： | 5 |
| 12 | Mechanism of diamond-to-graphite transformation at diamond-stable conditions显示文摘The diamond-to-graphite transformation at diamond-stable conditions is studied by temperature gradient method (TGM) under high pressure and high temperature (HPHT), although it is unreasonable from the view of thermodynamic considerations. It is found that, at diamond-stable conditions, for example, at 5.5 GPa and 1550 K, with fine diamond grits as carbon source and NiMnCo alloy as metal solvent assisted, not only large diamond crystals, but metastable regrown graphite crystals would be grown by layer growth mechanism, and the abundance of carbon source in the higher temperature region is indispensable for the presence of metastable regrown graphite crystals. From this transformation, it is concluded that, with metal solvent assisted, although the mechanism of crystal growth could be understood by the macro-mechanism of solubility difference between diamond and graphite in metal solvents, from the point of micro-mechanism, the minimum growth units for diamond or graphite crystals should be at atomic level and unrelated to the kinds of carbon source (diamond or graphite), which could be accumulated free-selectively on the graphite with sp2π or diamond crystals with sp3 bond structure. | ZANG ChuangYi CHEN XiaoZhou HU Qiang MA HongAn JIA XiaoPeng | 2009 | Chinese Science Bulletin2009，54，14： | 4 |
| 13 | Tilting-Twisting-Rolling: a pen-based technique for compass geometric construction显示文摘This paper presents a new pen-based technique, Tilting-Twisting-Rolling, to support compass geometric construction. By leveraging the 3D orientation information and 3D rotation information of a pen, this technique allows smooth pen action to complete multi-step geometric construction without switching task states.Results from a user study show this Tilting-Twisting-Rolling technique can improve user performance and user experience in compass geometric construction. | Fei LYU Feng TIAN Guozhong DAI Hongan WANG | 2017 | Science China(Information Sciences)2017，60，5： | 3 |
| 14 | Effects of aluminum additive on diamond crystallization in the Fe-Ni-C system under high temperature and high pressure conditions显示文摘In this paper,we investigate diamond crystallization in Fe-Ni-C with an aluminum additive and the capability of aluminum for converting graphite to diamond in a series of experiments at 4.9-5.5 GPa and 1240-1500°C.Our experimental results show that the growth habits of diamond crystal have been significantly influenced by the addition of aluminum as a catalyst.The crystal color changes from yellow to nearly colorless.The morphology of the synthesized diamond crystals gradually changes from cubic-octahedron to octahedron in the Fe-Ni-C systems with increasing aluminum additive.The lowest synthesis conditions fell first and then rose with increasing aluminum.We found a suitable addition of aluminum is very effective in lowering the synthesis conditions while an excessive aluminum additive may have a suppressive effect on the diamond nucleation. | ZHANG ZhuangFei JIA XiaoPeng LIU XiaoBing HU MeiHua LI Yong YAN BingMin MA HongAn | 2012 | Science China(Physics,Mechanics & Astronomy)2012，55，5： | 3 |
| 15 | Quantized and adaptive memristor based CNN(QA-mCNN)for image processing显示文摘Dear editor,The cellular neural network(CNN)is one of the most hardware-implementable neural networks with promising prospects on large-scale and real-time problem solving[1].However,the lack of adaptive templates and advanced implementation technology has hindered its developments and practical applications. | Xiaofang HU Wenqiang SHI Yue ZHOU Hongan TANG Shukai DUAN | 2022 | Science China(Information Sciences)2022，65，1： | 3 |
| 16 | The insect-killing bacterium Photorhabdus luminescens has the lowest mutation rate among bacteria显示文摘Mutation is a primary source of genetic variation that is used to power evolution.Many studies,however,have shown that most mutations are deleterious and,as a result,extremely low mutation rates might be benefcial for survival.Using a mutation accumulation experiment,an unbiased method for mutation study,we found an extremely low base-substitution mutation rate of 5.94×10^(-11) per nucleotide site per cell division(95%Poisson confdence intervals:4.65×10^(-11),7.48×10^(-11))and indel mutation rate of 8.25×10^(-12) per site per cell division(95%confdence intervals:3.96×10^(-12),1.52×10^(-11))in the bacterium Photorhabdus luminescens ATCC29999.The mutations are strongly A/T-biased with a mutation bias of 10.28 in the A/T direction.It has been hypothesized that the ability for selection to lower mutation rates is inversely proportional to the efective population size(drift-barrier hypothesis)and we found that the efective population size of this bacterium is signifcantly greater than most other bacteria.This fnding further decreases the lower-bounds of bacterial mutation rates and provides evidence that extreme levels of replication fdelity can evolve within organisms that maintain large efective population sizes. | Jiao Pan Emily Williams Way Sung Michael Lynch Hongan Long | 2021 | Marine Life Science & Technology2021，3，1： | 2 |
| 17 | Overpressure Evolution Recorded in Fluid Inclusions in the Dongpu Depression,Bohai Bay Basin,North China显示文摘The Dongpu depression,like other depressions in the Bohai Bay Basin,is characterized by overpressure,however,the published studies have not clearly given the overpressure formation mechanism and paleo-pressure evolution history in the Dongpu depression.In addition,the current researches are mainly focused on the northern Dongpu depression,while rare investigation has been conducted in the southern part.In this context,it is urgent to explore the comprehensive overpressure evolution and formation mechanism in the Dongpu depression in academic and industrial fields.This paper provided a systematic analysis of fluid inclusions,including fluid inclusion petrography,microthermometry,vapor phase filling degree measurement and PVT-x modeling.By using homogenization temperature-burial history projection,the trapping time of the oil inclusions are determined.Four pressure evolution stages are identified in both the northern and the southern Dongpu depression.The results indicate that the pressure accumulation stage is derived by disequilibrium compaction and hydrocarbon generation in the northern part because of the salt rock distribution,while the stage is only derived by hydrocarbon generation in the southern part because of no salt rock distribution.The pressure release stages are mainly caused by the tectonic uplifting movements at the end of Dongying and Minghuazhen Formation.The overpressure in most areas in the northern part has been preserved till now,which is considered as a result of the good plasticity and sealing ability of salt rock that prevent the pressure leakage by smearing on the fault.Areas without salt rock distribution show normal pressure,which means the salt rock is an important factor that contributes to the overpressure preservation.However,there are exceptions that in Baimiao and Qiaokou,the overpressure still exists even without salt rock distribution,which is due to fault closure. | Xiuyan Liu Honghan Chen Xuewei Xiao Hongan Zhang Yuwei Wang Tianwu Xu Pei Shang Lingtao Kong | 2022 | Journal of Earth Science2022，33，4： | 2 |
| 18 | Retrieval of urban slow deformation using the multi-baseline DInSAR technique显示文摘The investigation of slow displacement in urban areas using the multi-baseline DInSAR technique has been a hot research topic in the field of DInSAR. The basic flow of this technique includes several steps such as the combination of interferometric image pairs, generation of differential interferograms, selection of high coherent points, generation of the Delaunay triangular network, calculation and integration of increments in network, unwrapping and calibration of the residual phase, and the estimation of both atmospheric and nonlinear displacement phase. Among these steps, the calculation of increments is the key to retrieve linear displacement, while unwrapping and calibration of the residual phase are the keys to retrieve nonlinear displacement. In order to improve the performance of these two steps, this paper proposes a modified model coherence function for increments estimation, and a triangular 'circle' algorithm to deal with phase unwrapping and calibration. Based on the above algorithms, the subsidence of Suzhou City is investigated using 24 ERS scenes from February 1993 to December 2000. The results show that the linear subsidence velocity of the most urban area is about -20 to -30 mm/a during the time, with a yearly decrease in velocity. The displacement seems to be stable after 2000. Leveling data validate our results and demonstrate the reliability of the algorithm. | WU mao ZHANG Hong WANG Chao TANG YiXian WU HongAn | 2008 | Chinese Science Bulletin2008，53，23： | 2 |
| 19 | A decomposition approach to job-shop scheduling problem with discretely controllable processing times显示文摘Job-shop scheduling problem with discretely controllable processing times (JSP-DCPT) is modeled based on the disjunctive graph, and the formulation of JSP-DCPT is presented. A three-step decomposition approach is proposed so that JSP-DCPT can be handled by solving a job-shop scheduling problem (JSP) and a series of discrete time-cost tradeoff problems. To simplify the decomposition approach, the time-cost phase plane is introduced to describe tradeoffs of the discrete time-cost tradeoff problem, and an extreme mode-based set dominant theory is elaborated so that an upper bound is determined to cut discrete time-cost tradeoff problems generated by using the proposed decomposition approach. An extreme mode-based set dominant decomposition algorithm (EMSDDA) is then proposed. Experimental simulations for instance JSPDCPT_FT10, which is designed based on a JSP benchmark FT10, demonstrate the effectiveness of the proposed theory and the decomposition approach. | NIU GangGang SUN ShuDong LAFON Pascal YANG HongAn | 2011 | Science China(Technological Sciences)2011，54，5： | 2 |
| 20 | An exploratory study of multimodal interaction modeling based on neural computation显示文摘Multimodal interaction serves an important role in human-computer interaction. In this paper we propose a multimodal interaction model based on the latest cognitive research findings. The proposed model combines two proven neural computations, and helps to reveal the enhancement or depression influence of multimodal presentation upon the corresponding interaction task performance. A set of experiments is designed and conducted within the constraints of the model, which demonstrates the observed performance enhancement and depression effects. Our exploration and the experimental results help to further solve the question about how tactile feedback signal contribute the multimodal interaction efficiency which could provide guidelines for designing the tactile feedback in multimodal interaction. | Lu LU Fei LYU Feng TIAN Yineng CHEN Guozhong DAI Hongan WANG | 2016 | Science China(Information Sciences)2016，59，9： | 2 |
您所在的机构暂未开通此部分的功能，请联系管理员