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33篇 您的检索式:作者名="Ali Bay"
    题名 作者 年代 出处 被引量
1The human long non-coding RNA-RoR is a p53 repressor in response to DNA damage显示文摘在应力之上,肿瘤 suppressor p53 的水平显著地被提高,是众所周知的。然而尽管有广泛的研究,包含的内在的机制重要为导致压力的 p53 规定内部播放器仍然不充分被理解。我们人的 lincRNA-RoR (RoR ) 是 p53 的一个强壮的否定管理者的现在的证据。不同于通过 ubiquitin-proteasome 小径引起 p53 降级的 MDM2, RoR 通过和异构的原子 ribonucleoprotein 的直接相互作用压制 p53 翻译我(hnRNP 我) 。重要地,带 hnRNP 的一个 28 底 RoR 序列我有约束力的主题为 p53 压抑必要、足够。我们进一步证明 RoR 禁止调停 p53 的房间周期拘捕和 apoptosis。最后,我们表明 p53 transcriptionally 导致 RoR 表示的一个 RoR-p53 自动调整的反馈环。一起,这些结果建议 RoR-hnRNP I-p53 轴可以组成一个另外的监视网络让房间更好对各种各样的压力作出回应。Ali Zhang Nanjiang Zhou Jianguo Huang Qian Liu Koji Fukuda Ding Ma Zhaohui Lu Cunxue Bai Kounosuke Watabe Yin-Yuan Mo 2013Cell Research2013,23,3:47
2Nature-inspired chiral metasurfaces for circular polarization detection and full-Stokes polarimetric measurements显示文摘The manipulation and characterization of light polarization states are essential for many applications in quantum communication and computing,spectroscopy,bioinspired navigation,and imaging.Chiral metamaterials and metasurfaces facilitate ultracompact devices for circularly polarized light generation,manipulation,and detection.Herein,we report bioinspired chiral metasurfaces with both strong chiral optical effects and low insertion loss.We experimentally demonstrated submicron-thick circularly polarized light filters with peak extinction ratios up to 35 and maximum transmission efficiencies close to 80% at near-infrared wavelengths(the best operational wavelengths can be engineered in the range of 1.3-1.6μm).We also monolithically integrated the microscale circular polarization filters with linear polarization filters to perform full-Stokes polarimetric measurements of light with arbitrary polarization states.With the advantages of easy on-chip integration,ultracompact footprints,scalability,and broad wavelength coverage,our designs hold great promise for facilitating chip-integrated polarimeters and polarimetric imaging systems for quantum-based optical computing and information processing,circular dichroism spectroscopy,biomedical diagnosis,and remote sensing applications.Ali Basiri Xiahui Chen Jing Bai Pouya Amrollahi Joe Carpenter Zachary Holman Chao Wang Yu Yao 2019Light(Science & Applications)2019,8,1:12
3Chip-integrated plasmonic flat optics for mid-infrared full-Stokes polarization detection显示文摘Flat optics presents a new path to control the phase, amplitude, and polarization state of light with ultracompact devices. Here we demonstrate chip-integrated metasurface devices for polarization detection of mid-infrared light with arbitrary polarization states. Six high-performance microscale linear and circular polarization filters based on vertically stacked plasmonic metasurfaces(with total thickness <600 nm) are integrated on the same chip to obtain all four Stokes parameters of light with high accuracy. The device designs can be tailored to operate at any wavelength in the mid-infrared spectral region and are feasible for on-chip integration with mid-infrared(mid-IR) photodetectors and imager arrays. Our work will enable on-chip mid-IR polarimeters and polarimetric imaging systems, which are highly desirable for many applications, such as clinical diagnosis, target detection, and space exploration.JING BAI CHU WANG XIAHUI CHEN ALI BASIRI CHAO WANG YU YAO 2019Photonics Research2019,7,9:8
4Saliency Rank:Two-stage manifold ranking for salient object detection显示文摘Salient object detection remains one of the most important and active research topics in computer vision,with wide-ranging applications to object recognition,scene understanding,image retrieval,context aware image editing,image compression,etc. Most existing methods directly determine salient objects by exploring various salient object features.Here,we propose a novel graph based ranking method to detect and segment the most salient object in a scene according to its relationship to image border(background) regions,i.e.,the background feature.Firstly,we use regions/super-pixels as graph nodes,which are fully connected to enable both long range and short range relations to be modeled. The relationship of each region to the image border(background) is evaluated in two stages:(i) ranking with hard background queries,and(ii) ranking with soft foreground queries. We experimentally show how this two-stage ranking based salient object detection method is complementary to traditional methods,and that integrated results outperform both. Our method allows the exploitation of intrinsic image structure to achieve high quality salient object determination using a quadratic optimization framework,with a closed form solution which can be easily computed.Extensive method evaluation and comparison using three challenging saliency datasets demonstrate that our method consistently outperforms 10 state-of-theart models by a big margin.Wei Qi Ming-Ming Cheng Ali Borji Huchuan Lu Lian-Fa Bai 2015Computational Visual Media2015,1,4:5
5Enhancing through-plane thermal conductivity of fluoropolymer composite by developing in situ nano-urethane linkage at graphene–graphene interface显示文摘Attributed to the intense development and complexity in electronic devices,energy dissipation is becoming more essential nowadays.The carbonaceous materials particularly graphene(Gr)-based thermal interface materials(TIMs)are exceptional in heat management.However,because of the anisotropic behavior of Gr in composites,the TIMs having outstanding through-plane thermal conductivity(┴TC)are needed to fulfill the upcoming innovation in numerous devices.In order to achieve this,herein,nano-urethane linkage-based modified Gr and carbon fibers architecture termed as nanourethane linkage(NUL)-Gr/carbon fibers(CFs)is fabricated.Wherein,toluene diisocyanate is utilized to develop a novel but simple NUL to shape a new interface between graphene sheets.Interestingly,the prepared composite of NUL-Gr/CFs with polyvinylidene fluoride matrix shows outstanding performance in heat management.Owing to the unique structure of NUL-Gr/CFs,an unprecedented value of┴TC(~7.96 W·m^–1·K^–1)is achieved at a low filler fraction of 13.8 wt.%which translates into an improvement of^3,980%of pristine polymer.The achieved outcomes elucidate the significance of the covalent interaction between graphene sheets as well as strong bonding among graphene and matrix in the composites and manifest the potential of proposed NUL-Gr/CFs architecture for practical applications.Muhammad Maqbool Haichang Guo Akbar Bashir Ali Usman Adeel YAbid Guansong He Yanjuan Ren Zeeshan Ali Shulin Bai 2020Nano Research2020,13,10:3
6Ultrafast low-pump fluence all-optical modulation based on graphene-metal hybrid metasurfaces显示文摘Graphene is an attractive material for all-optical modulation because of its ultrafast optical response and broad spectral coverage.However,all-optical graphene modulators reported so far require high pump fluence due to the ultrashort photo-carrier lifetime and limited absorption in graphene.We present modulator designs based on graphene-metal hybrid plasmonic metasurfaces with highly enhanced light-graphene interaction in the nanoscale hot spots at pump and probe(signal)wavelengths.Based on this design concept,we have demonstrated high-speed all-optical modulators at near and mid-infrared wavelengths(1.56μm and above 6μm)with significantly reduced pump fluence(1–2 orders of magnitude)and enhanced optical modulation.Ultrafast near-infrared pump-probe measurement results suggest that the modulators’response times are ultimately determined by graphene’s ultrafast photocarrier relaxation times on the picosecond scale.The proposed designs hold the promise to address the challenges in the realization of ultrafast all-optical modulators for mid-and far-infrared wavelengths.Ali Basiri Md Zubair Ebne Rafique Jing Bai Shinhyuk Choi Yu Yao 2022Light(Science & Applications)2022,11,5:2
7The effects of spectrograph slit modes on the accuracy of stellar radial velocity measurement and atmospheric parameter estimation显示文摘Spectrograph slit is conventionally used to enhance the spectral resolution and manage how much light can be allowed to enter spectrograph.The narrow slit provides a higher resolution but sacrifices efficiency of spectrograph and results in a low signal to noise ratio(S/N) spectra product.We take GuoShouJing telescope as an example and carry out a series of experiments to study how its 2/3 slit mode affects the precision of stellar radial velocity measurement and atmosphere parameters estimate.By transforming the resolution and adding a Gaussian White Noise to the extremely high quality spectra from the Sloan Digital Sky Survey,we generate synthetic stellar spectra of various brightness with different S/Ns.Comparing the measurements on these noise added spectra with the original high quality ones,we summarize the influences of the 2/3 slit mode on the measurement accuracy of stellar radial velocity and atmospheric parameters.WANG FengFei ZHANG HaoTong LUO ALi BAI ZhongRui DU Bing ZHAO YongHeng 2013Science China(Physics,Mechanics & Astronomy)2013,56,10:2
8Site testing campaign for the Large Optical/infrared Telescope of China:overview显示文摘The Large Optical/infrared Telescope(LOT)is a ground-based 12 m diameter optical/infrared telescope which is proposed to be built in the western part of China in the next decade.Based on satellite remote sensing data,along with geographical,logistical and political considerations,three candidate sites were chosen for ground-based astronomical performance monitoring.These sites include:Ali in Tibet,Daocheng in Sichuan and Muztagh-ata in Xinjiang.Up until now,all three sites have continuously collected data for two years.In this paper,we will introduce this site testing campaign,and present its monitoring results obtained during the period between March 2017 and March 2019.Lu Feng Jin-Xin Hao Zi-Huang Cao Jin-Min Bai Ji Yang Xu Zhou Yong-Qiang Yao Jin-Liang Hou Yong-Heng Zhao Yu Liu Teng-Fei Song Li-Yong Liu Jia Yin Hua-Lin Chen Chong Pei Ali Esamdin Lu Ma Chun-Hai Bai Peng Wei Jing Xu Guang-Xin Pu Guo-Jie Feng Xuan Zhang Liang Ming Abudusaimaitijiang Yisikandee Jian-Rong Shi Jian Li Yuan Tian Zheng Wang Xia Wang Xiao-Jun Jiang Jian-Feng Wang Jian-Feng Tian Yan-Jie Xue Jian-Sheng Chen Jing-Yao Hu Zhi-Xia Shen Yun-Ying Jiang 2020Research in Astronomy and Astrophysics2020,20,6:2
9Site-testing at Muztagh-ata site Ⅰ:ground meteorology and sky brightness显示文摘Site-testing is crucial for achieving the goal of scientific research and analysis of meteorological and optical observing conditions,one of the associated basic tasks.As one of three potential sites to host the 12-meter Large Optical/infrared Telescope(LOT),the Muztagh-ata site,which is located on the Pamir Plateau in Xinjiang,in west China,began its site-testing task in the spring of 2017.In this paper,we firstly start with an introduction to the site and then present a statistical analysis of the ground-level meteorological properties such as air temperature,barometric pressure,relative humidity,and wind speed and direction,recorded by an automatic weather station with standard meteorological sensors for a two-year duration.We also show the monitoring results of sky brightness during this period.Jing Xu Ali Esamdin Jin-Xin Hao Jin-Min Bai Ji Yang Xu Zhou Yong-Qiang Yao Jin-Liang Hou Guang-Xin Pu Guo-Jie Feng Chun-Hai Bai Peng Wei Shu-Guo Ma Abudusaimaitijiang Yisikandee Le-Tian Wang Xuan Zhang Liang Ming Lu Ma Jin-Zhong Liu Zi-Huang Cao Yong-Heng Zhao Lu Feng Jian-Rong Shi Hua-Lin Chen Chong Pei Xiao-Jun Jiang Jian-Feng Wang Jian-Feng Tian Yan-Jie Xue Jing-Yao Hu Yun-Ying Jiang 2020Research in Astronomy and Astrophysics2020,20,6:1
10The ecotoxicologi- cal and interactive effects of chromium and aluminum on growth,oxidative damage and antioxidant enzymes on two barley genotypes differing in Aholerance 显示文摘Shafaqat Ali Pu Bai Zeng F R 2011Environ- mental and Experimental Botany2011,70,:1
11Tribological Performance of Different Concentrations of Al_(2)O_(3)Nanofluids on Minimum Quantity Lubrication Milling显示文摘Nanofluid minimum quantity lubrication(NMQL)is a green processing technology.Cottonseed oil is suitable as base oil because of excellent lubrication performance,low freezing temperature,and high yield.Al_(2)O_(3)nanoparticles improve not only the heat transfer capacity but also the lubrication performance.The physical and chemical proper-ties of nanofluid change when Al_(2)O_(3)nanoparticles are added.However,the effects of the concentration of nanofluid on lubrication performance remain unknown.Furthermore,the mechanisms of interaction between Al_(2)O_(3)nanoparti-cles and cottonseed oil are unclear.In this research,nanofluid is prepared by adding different mass concentrations of Al_(2)O_(3)nanoparticles(0,0.2%,0.5%,1%,1.5%,and 2%wt)to cottonseed oil during minimum quantity lubrication(MQL)milling 45 steel.The tribological properties of nanofluid with different concentrations at the tool/workpiece interface are studied through macro-evaluation parameters(milling force,specific energy)and micro-evaluation parameters(surface roughness,micro morphology,contact angle).The result show that the specific energy is at the minimum(114 J/mm^(3)),and the roughness value is the lowest(1.63μm)when the concentration is 0.5 wt%.The surfaces of the chip and workpiece are the smoothest,and the contact angle is the lowest,indicating that the tribological proper-ties are the best under 0.5 wt%.This research investigates the intercoupling mechanisms of Al_(2)O_(3)nanoparticles and cottonseed base oil,and acquires the optimal Al_(2)O_(3)nanofluid concentration to receive satisfactory tribological properties.Xiufang Bai Juan Jiang Changhe Li Lan Dong Hafiz Muhammad Ali Shubham Sharma 2023Chinese Journal of Mechanical Engineering2023,36,4:1
12Developing a process-based and remote sensing driven crop yield model for maize(PRYM–Maize) and its validation over the Northeast China Plain显示文摘Spatial dynamics of crop yield provide useful information for improving the production. High sensitivity of crop growth models to uncertainties in input factors and parameters and relatively coarse parameterizations in conventional remote sensing(RS) approaches limited their applications over broad regions. In this study, a process-based and remote sensing driven crop yield model for maize(PRYM–Maize) was developed to estimate regional maize yield, and it was implemented using eight data-model coupling strategies(DMCSs) over the Northeast China Plain(NECP). Simulations under eight DMCSs were validated against the prefecture-level statistics(2010–2012) reported by National Bureau of Statistics of China, and inter-compared. The 3-year averaged result could give more robust estimate than the yearly simulation for maize yield over space. A 3-year averaged validation showed that prefecture-level estimates by PRYM–Maize under DMCS8, which coupled with the development stage(DVS)-based grain-filling algorithm and RS phenology information and leaf area index(LAI), had higher correlation(R, 0.61) and smaller root mean standard error(RMSE, 1.33 t ha^(–1)) with the statistics than did PRYM–Maize under other DMCSs. The result also demonstrated that DVS-based grain-filling algorithm worked better for maize yield than did the harvest index(HI)-based method, and both RS phenology information and LAI worked for improving regional maize yield estimate. These results demonstrate that the developed PRYM–Maize under DMCS8 gives reasonable estimates for maize yield and provides scientific basis facilitating the understanding the spatial variations of maize yield over the NECP.ZHANG Sha BAI Yun ZHANG Jia-hua Shahzad ALI 2021Journal of Integrative Agriculture2021,20,2:1
13An inroduction to petroleum and natural gas exploration and production research in Cina 显示文摘Jin Z J Bai G P Ali Mansoori G 2004Journal of Petroleum Science and Engineering2004,41,:1
14Tsnl-mediated host responses to ToxA from Pyrenophora tritici-repentis显示文摘Adhikari T B Bai J Meinhardt S W Gurung S Myrfield M Patel J Ali S Gudmestad N C Rasmussen J B 0,,:1
15Kinematics and stellar population properties of the Andromeda galaxy by using the spectroscopic observations of the Guoshoujing Telescope显示文摘The Andromeda galaxy was observed by the Guoshoujing Telescope (formerly named the Large Sky Area Multi-Object Fiber Spectroscopic Telescope - LAMOST),during the 2009 commissioning phase.Due to the absence of standard stars for flux calibration,we use the photometric data of 15 intermediate bands in the Beijing-Arizona-Taipei-Connecticut (BATC) survey to calibrate the spectra.In total,59 spectra located in the bulge and disk of the galaxy are obtained.Kinematic and stellar population properties of the stellar content are derived with these spectra.We obtain the global velocity field and calculate corresponding rotation velocities out to about 7 kpc along the major axis.These rotation velocity measurements complement those of the gas content,such as the H I and CO.The radial velocity dispersion shows that the stars in the bulge are more dynamically thermal and the disk is more rotationally-supported.The age distribution shows that the bulge was formed about 12 Gyr ago,the disk is relatively younger and the ages of some regions along the spiral arms can reach as young as about 1 Gyr.These young stellar populations have a relatively richer abundance and larger reddening.The overall average metallicity of the galaxy approximates the solar metallicity and a very weak abundance gradient is gained.The reddening map gives a picture of a dust-free bulge and a distinct dusty ring in the disk.Hu ZOU Yan-Bin Yang Tian-Meng Zhang Jun Ma Xu Zhou Ali Luo Hao-Tong Zhang Zhong-Rui Bai Yong-Heng Zhao 2011Research in Astronomy and Astrophysics2011,11,9:1
16The ecotoxicological and interactive effects of chromium and aluminum on growth, oxidative damage and antioxidants on two barley genotypes differing in A1 tolerance显示文摘Ali S Bai P Zeng F R 2011Environmental and Experimental Botany2011,70,23:1
17Long-term analysis of clear nights using satellite data considering astronomical sites in western China显示文摘A large ground-based optical/infrared telescope is being planned for a world-class astronomical site in China.The cloud-free night percentage is the primary meteorological consideration for evaluating candidate sites.The data from GMS and NOAA satellites and the MODIS instrument were utilized in this research,covering the period from 1996 to 2015.Our data analysis benefits from overlapping results from different independent teams as well as a uniform analysis of selected sites using GMS+NOAA data.Although significant ground-based monitoring is needed to validate these findings,we identify three different geographical regions with a high percentage of cloud-free conditions(~83%on average),which is slightly lower than at Mauna Kea and Cerro Armazones(~85%on average)and were chosen for the large international projects TMT and ELT respectively.Our study finds evidence that cloud distributions and the seasonal changes affected by the prevailing westerly winds and summer monsoons reduce the cloud cover in areas influenced by the westerlies.This is consistent with the expectations from climate change models and is suggestive that most of the identified sites will have reduced cloud cover in the future.Zi-Huang Cao Li-Yong Liu Yong-Heng Zhao Lu Feng Hugh RAJones Huang Shen Jin-Xin Hao Yan-Jie Xue Yong-Qiang Yao Jing Xu Ali Esamdin Zhao-Xiang Qi Jian-Rong Shi Jian Li Yuan Tian Zheng Wang Tai-Sheng Yan Xia Wang Jian-Ping Xiong Si-Cheng Yu Jun-Bo Zhang Zhi-Xia Shen Yun-Ying Jiang Jia Yin Guang-Xin Pu Peng Wei Chun-Hai Bai Guo-Jie Feng Lu Ma Teng-Fei Song Jian-Feng Wang Jian-Feng Tian Xian-Qun Zeng Zhi-Gang Hou Shi-Long Liao Zhi-Song Cao Dong-Wei Fan Yun-Fei Xu Chang-Hua Li Yi-Han Tao 2020Research in Astronomy and Astrophysics2020,20,6:0
18Data processing and data products from 2017 to 2019 campaign of astronomical site testing at Ali,Daocheng and Muztagh-ata显示文摘Based on previous site testing and satellite cloud data,Ali,Daocheng and Muztagh-ata have been selected as candidate sites for the Large Optical/Infrared Telescope(LOT) in China.We present the data collection,processing,management and quality analysis for our site testing based on using similar hardware.We analyze meteorological data,seeing,background light,cloud and precipitable water vapor data from 2017 March 10 to 2019 March 10.We also investigated the relative usefulness of our all-sky camera data in comparison to that from the meteorological TERRA satellite data based on a night-by-night comparison of the correlation and consistency between them.We find a 6% discrepancy arising from a wide range of factors.Zi-Huang Cao Jin-Xin Hao Lu Feng Hugh RAJones Jian Li Jing Xu Li-Yong Liu Teng-Fei Song Jian-Feng Wang Hua-Lin Chen Yan-Jie Xue Huang Shen Yong-Heng Zhao Zhao-Xiang Qi Jian-Rong Shi Yuan Tian Zheng Wang Xia Wang Jin-Liang Hou Jin-Ming Bai Ji Yang Xu Zhou Yong-Qiang Yao Jia Yin Ali Esamdin Guang-Xin Pu Peng Wei Chun-Hai Bai Guo-Jie Feng Lu Ma Xuan Zhang Yu Liu Chong Pei Zhi-Xia Shen Yun-Ying Jiang Jian-Feng Tian Xian-Qun Zeng Zhi-Gang Hou Xu Yang Jun-Bo Zhang Shi-Long Liao Dong-Wei Fan Yun-Fei Xu Jian-Ping Xiong Tai-Sheng Yan Xi Zhang Chang-Hua Li Yi-Han Tao Si-Cheng Yu Zhi-Song Cao Hong-Shuai Wang 2020Research in Astronomy and Astrophysics2020,20,6:0
19Site testing at Muztagh-ata site Ⅱ:seeing statistics显示文摘In this article,we present a detailed analysis of the statistical properties of seeing for the Muztaghata site which is a candidate site for hosting the future Chinese Large Optical/infrared Telescope(LOT)project.The measurements were obtained with differential image motion monitors(DIMMs)from April2017 to November 2018 at different heights during different periods.The median seeings at 11 m and6 m are very close but significantly different from that on the ground.We mainly analyzed the seeing at11 m monthly and hourly,having found that the best season for observing was from late autumn to early winter and seeing tended to improve during the night only in autumn.The analysis of the dependence on temperature inversion,wind speed and direction also was made and the best meteorological conditions for seeing are given.Jing Xu Ali Esamdin Jin-Xin Hao Jin-Min Bai Ji Yang Xu Zhou Yong-Qiang Yao Jin-Liang Hou Guang-Xin Pu Guo-Jie Feng Chun-Hai Bai Peng Wei Shu-Guo Ma Abudusaimaitijiang Yisikandee Le-Tian Wang Xuan Zhang Liang Ming Lu Ma Jin-Zhong Liu Zi-Huang Cao Yong-Heng Zhao Lu Feng Jian-Rong Shi Hua-Lin Chen Chong Pei Xiao-Jun Jiang Jian-Feng Wang Jian-Feng Tian Yan-Jie Xue Jing-Yao Hu Yun-Ying Jiang 2020Research in Astronomy and Astrophysics2020,20,6:0
20Site-testing at Muztagh-ata site Ⅲ:temperature inversion in surface-layer atmosphere显示文摘In this article,we present detailed seasonal,monthly and daily statistics of temperature difference in the surface layer at the Muztagh-ata site based on the temperature measurements at two heights of 2 m and6 m.We find that temperature inversion occurs frequently at our site during nighttime,especially during the cold season.Strong temperature inversion always represents stable atmospheric turbulence,which is crucial for an optical observatory.By analyzing the behavior of temperature inversion and its correlation with wind and cloud amount,one conclusion can be made that radiation inversion is the main reason for the existence of temperature inversion in the surface-layer at the Muztagh-ata site.Jing Xu Ali Esamdin Guo-Jie Feng Guang-Xin Pu Yi Hu Ke-Liang Hu Xu Yang Jin-Xin Hao Yan-Jie Xue Xu Zhou Shu-Guo Ma Abudusaimaitijiang Yisikandee Le-Tian Wang Xuan Zhang Chun-Hai Bai Peng Wei Liang Ming Lu Ma Jin-Zhong Liu Yun-Ying Jiang 2020Research in Astronomy and Astrophysics2020,20,6:0
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