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| 1 | Nitrogen Balance and Loss in a Greenhouse Vegetable System in Southeastern China显示文摘High rates of fertilizer nitrogen (N) are applied in greenhouse vegetable fields in southeastern China to maximize production;however,the N budgets of such intensive vegetable production remain to be explored.The goal of this study was to determine the annual N balance and loss in a greenhouse vegetable system of annual rotation of tomato,cucumber,and celery at five N (urea) application rates (0,348,522,696,and 870 kg N ha-1 year-1).Total N input to the 0-50 cm soil layer ranged from 531 to 1 053 kg ha-1,and N fertilizer was the main N source,accounting for 66%-83% of the total annual N input.In comparison,irrigation water,wet deposition,and seeds in total accounted for less than 1% of the total N input.The fertilizer N use efficiency was only 18% under the conventional application rate of 870 kg N ha-1 and decreased as the application rate increased from 522 to 870 kg N ha-1.Apparent N losses were 196-201 kg N ha-1,of which 71%-86% was lost by leaching at the application rates of 522-870 kg N ha-1.Thus,leaching was the primary N loss pathway at high N application rates and the amount of N leached was proportional to the N applied during the cucumber season.Moreover,dissolved organic N accounted for 10% of the leached N,whereas NH3 volatilization only contributed 0.1%-0.6% of the apparent N losses under the five N application rates in this greenhouse vegetable system. | MIN Ju ZHAO Xu SHI Wei-Ming XING Guang-Xi ZHU Zhao-Liang | 2011 | Pedosphere2011，21，4： | 91 |
| 2 | IL-17 response mediates acute lung injury induced by the 2009 Pandemic Influenza A (HIN1) Virus显示文摘 | Chenggang Li Penghui Yang Yang Sun Taisheng Li Chen Wang Zhong Wang Zhen Zou Yiwu Yan Wei Wang Chen Wang Zhongwei Chen Li Xing Chong Tang Xiangwu Ju Feng Guo Jiejie Deng Yan Zhao Peng Yang Jun Tang Huanling Wang Zhongpeng Zhao Zhinan Yin Bin Cao Xiliang Wang Chengyu Jiang | 2012 | Cell Research2012，22，3： | 22 |
| 3 | Spatial and temporal variations of forest LAI in China during 2000-2010显示文摘Forests are crucial terrestrial ecosystems.Their leaf area index (LAI) is a key parameter determining the exchange of matter and energy between the atmosphere and the ground surface.In this study,MOD 09A1 and MCD 43A1 data were input into an inversion model based on the 4-scale geometric optical model to retrieve 8-d 500 m LAI products in China during the period 2000 to 2010.The resulting LAI product was validated using LAI measured in 6 typical areas.The spatial and temporal variations of forest LAI and its relationships with temperature and precipitation were analyzed.The results show that the accuracy of the 500 m LAI product was above 70% in the 6 typical areas,indicating the reliability of this product.From 2000 to 2010,forest LAI in northeast,north,and south central China showed increasing trends.However,forest LAI in southeast and parts of southwest China showed downward trends,mainly because of the significant decrease observed during the period 2008 to 2010.Annual mean forest LAI positively correlated with annual mean temperature (AMT) in northeastern China and negatively correlated with AMT in southwest China.It had positive correlations with annual total precipitation in central south and north China.The abnormal climate conditions in 2001 and 2009 caused forest LAI to be obviously lower than normal in regions south of the Qinling Mountains and Huaihe River.Annual mean LAI decreased by more than 1.0 in some areas. | LIU YiBo JU WeiMin CHEN JingMing ZHU GaoLong XING BaiLing ZHU JingFang HE MingZhu | 2012 | Chinese Science Bulletin2012，57，22： | 22 |
| 4 | Genetic Architecture of Natural Variation in Rice Chlorophyll Content Revealed by a Genome-Wide Association Study显示文摘 | Quanxiu. Wang Weibo Xie Hongkun Xing Ju Yan Xiangzhou Meng Xinglei Li Xiangkui Fu Jiuyue Xu Xingming Lian Sibin Yu Yongzhong Xing Gongwei Wang | 2015 | Molecular Plant2015，8，6： | 20 |
| 5 | Numerical analysis of the failure process of soil-rock mixtures through computed tomography and PFC3D models显示文摘 | Yang Ju Huafei Sun Mingxu Xing Xiaofei Wang Jiangtao Zheng | 2018 | International Journal of Coal Science & Technology2018，5，2： | 17 |
| 6 | Paleoclimate Modeling in China: A Review显示文摘This paper provides a review of paleoclimate modeling activities in China. Rather than attempt to cover all topics, we have chosen a few climatic intervals and events judged to be particularly informative to the international community. In historical climate simulations, changes in solar radiation and volcanic activity explain most parts of reconstructions over the last millennium prior to the industrial era, while atmospheric greenhouse gas concentrations play the most important role in the20 th century warming over China. There is a considerable model–data mismatch in the annual and boreal winter temperature change over China during the mid-Holocene [6000 years before present(ka BP)], while coupled models with an interactive ocean generally perform better than atmospheric models. For the Last Glacial Maximum(21 ka BP), climate models successfully reproduce the surface cooling trend over China but fail to reproduce its magnitude, with a better performance for coupled models. At that time, reconstructed vegetation and western Pacific sea surface temperatures could have significantly affected the East Asian climate, and environmental conditions on the Qinghai–Tibetan Plateau were most likely very different to the present day. During the late Marine Isotope Stage 3(30–40 ka BP), orbital forcing and Northern Hemisphere glaciation, as well as vegetation change in China, were likely responsible for East Asian climate change. On the tectonic scale,the Qinghai–Tibetan Plateau uplift, the Tethys Sea retreat, and the South China Sea expansion played important roles in the formation of the East Asian monsoon-dominant environment pattern during the late Cenozoic. | JIANG Dabang YU Ge ZHAO Ping CHEN Xing LIU Jian LIU Xiaodong WANG Shaowu ZHANG Zhongshi YU Yongqiang LI Yuefeng JIN Liya XU Ying JU Lixia ZHOU Tianjun YAN Xiaodong | 2015 | Advances in Atmospheric Sciences2015，32，2： | 12 |
| 7 | Imaging superoxide flash and metabolism-coupled mitochondrial permeability transition in living animals显示文摘线粒体为精力新陈代谢和反应的氧种类(ROS ) 的生产是必要的。在未经触动的房间,呼吸线粒体展览自发的 “ superoxide flashes”,对短暂 mitochondrial 渗透转变(tMPT ) 结果的 quantal 生产 ROS 事件。这里,我们在表示 superoxide 生物传感器 mt-cpYFP 的生活老鼠在 mitochondrial superoxide 闪光和 tMPT 活动的 vivo 成像执行第一,并且表明他们联合到整个身体的葡萄糖新陈代谢。柔韧的 tMPT/superoxide 闪光活动发生在骨胳的肌肉和 anesthetized 的臀部的神经转基因的老鼠。在骨胳的肌肉,成像 tMPT/superoxide 闪光揭示了线粒体的迷宫的三维的网络同时地操作。tMPT/superoxide 闪光活动响应全身的葡萄糖挑战或胰岛素刺激澎湃,以一种显然调制频率的方式并且也在 tMPT 的 gating 模式包含移动。因此,在 tMPT 依赖的 mitochondrial ROS 的 vivo 成像,信号和 metabolism-tMPT-superoxide 的发现闪光联合标记为 mitochondrial 功能并且 ROS 处于健康和疾病发信号的学习的重要工艺、概念的进展。 | Huaqiang Fang Min Chen Yi Ding Wei Shang Jiejia Xu Xing Zhang Wanrui Zhang Kaitao Li Yao Xiao Feng Gao Shujiang Shang Jing-Chao Li Xiao-Li Tian Shi-Qiang Wang Jingsong Zhou Noah Weisleder Jianjie Ma Kunfu Ouyang Ju Chen Xianhua Wang Ming Zheng Wang Wang Xiuqin Zhang Heping Cheng | 2011 | Cell Research2011，21，9： | 11 |
| 8 | Fluid-structure Interaction Analysis and Lifetime Estimation of a Natural Gas Pipeline Centrifugal Compressor under Near-choke and Near-surge Conditions显示文摘Up to present, there have been no studies concerning the application of fluid-structure interaction(FSI) analysis to the lifetime estimation of multi-stage centrifugal compressors under dangerous unsteady aerodynamic excitations. In this paper, computational fluid dynamics(CFD) simulations of a three-stage natural gas pipeline centrifugal compressor are performed under near-choke and near-surge conditions, and the unsteady aerodynamic pressure acting on impeller blades are obtained. Then computational structural dynamics(CSD) analysis is conducted through a one-way coupling FSI model to predict alternating stresses in impeller blades. Finally, the compressor lifetime is estimated using the nominal stress approach. The FSI results show that the impellers of latter stages suffer larger fluctuation stresses but smaller mean stresses than those at preceding stages under near-choke and near-surge conditions. The most dangerous position in the compressor is found to be located near the leading edge of the last-stage impeller blade. Compressor lifetime estimation shows that the investigated compressor can run up to 102.7 h under the near-choke condition and 200.2 h under the near-surge condition. This study is expected to provide a scientific guidance for the operation safety of natural gas pipeline centrifugal compressors. | JU Yaping LIU Hui YAO Ziyun XING Peng ZHANG Chuhua | 2015 | Chinese Journal of Mechanical Engineering2015，28，6： | 11 |
| 9 | Evaluation of Vaporized Hydrogen Peroxide Fumigation as a Method for the Bio-decontamination of the High Efficiency Particulate Air Filter Unit显示文摘Objective To evaluate the performance of vaporized hydrogen peroxide (VHP) for the bio-decontamination of the high efficiency particulate air (HEPA) filter unit. Methods Self-made or commercially available bioindicators were placed at designated locations in the HEPA filter unit under VHP fumigation. The spores on coupons were then extracted by 0.5 h submergence in eluent followed by 200-time violent knocks. Results Due to the presence of HEPA filter in the box, spore recovery from coupons placed at the bottom of the filter downstream was significantly higher than that from coupons placed at the other locations. The gap of decontamination efficiency between the top and the bottom of the filter downstream became narrower with the exposure time extended. The decontamination efficiency of the bottom of the filter downstream only improved gently with the injection rate of H2O2 increased and the decontamination efficiency decreased instead when the injection rate exceeded 2.5 g/min. The commercially available bioindicators were competent to indicate the disinfection efficiency of VHP for the HEPA filter unit. Conclusion The HEPA filter unit is more difficult than common enclosure to decontaminate using VHP fumigation. Complete decontamination can be achieved by extending fumigation time. VHP fumigation can be applied for in-situ biodecontamination of the HEPA filter unit as an alternative method to formaldehyde fumigation. | JIA Hai Quan LI Yan Ju SUN Bei ZHAO Si Qing YI Ying ZHAO Ming ZHANG Zong Xing PAN Xin QI Jian Cheng | 2013 | Biomedical and Environmental Sciences2013，26，2： | 8 |
| 10 | New innovations in pavement materials and engineering:A review on pavement engineering research 2021显示文摘Sustainable and resilient pavement infrastructure is critical for current economic and environmental challenges.In the past 10 years,the pavement infrastructure strongly supports the rapid development of the global social economy.New theories,new methods,new technologies and new materials related to pavement engineering are emerging.Deterioration of pavement infrastructure is a typical multi-physics problem.Because of actual coupled behaviors of traffic and environmental conditions,predictions of pavement service life become more and more complicated and require a deep knowledge of pavement material analysis.In order to summarize the current and determine the future research of pavement engineering,Journal of Traffic and Transportation Engineering(English Edition)has launched a review paper on the topic of'New innovations in pavement materials and engineering:A review on pavement engineering research 2021'.Based on the joint-effort of 43 scholars from 24 well-known universities in highway engineering,this review paper systematically analyzes the research status and future development direction of 5 major fields of pavement engineering in the world.The content includes asphalt binder performance and modeling,mixture performance and modeling of pavement materials,multi-scale mechanics,green and sustainable pavement,and intelligent pavement.Overall,this review paper is able to provide references and insights for researchers and engineers in the field of pavement engineering. | JTTE Editorial Office Jiaqi Chen Hancheng Dan Yongjie Ding Yangming Gao Meng Guo Shuaicheng Guo Bingye Han Bin Hong Yue Hou Chichun Hu Jing Hu Ju Huyan Jiwang Jiang Wei Jiang Cheng Li Pengfei Liu Yu Liu Zhuangzhuang Liu Guoyang Lu Jian Ouyang Xin Qu Dongya Ren Chao Wang Chaohui Wang Dawei Wang Di Wang Hainian Wang Haopeng Wang Yue Xiao Chao Xing Huining Xu Yu Yan Xu Yang Lingyun You Zhanping You Bin Yu Huayang Yu Huanan Yu Henglong Zhang Jizhe Zhang Changhong Zhou Changjun Zhou Xingyi Zhu | 2021 | Journal of Traffic and Transportation Engineering(English Edition)2021，8，6： | 7 |
| 11 | Preparation and evaluation of α-Al2O3 supported lithium ion sieve membranes for Li^+ extraction显示文摘Spinel lithium manganese oxide ion-sieves have been considered the most promising adsorbents to extract Li^+ from brines and sea water.Here,we report a lithium ion-sieve which was successfully loaded onto tubular α-Al2 O3 ceramic substrates by dipping crystallization and post-calcination method.The lithium manganese oxide Li4 Mn5 O(12)was first synthesized onto tubular α-Al2 O3 ceramic substrates as the ion-sieve precursor(i.e.L-AA),and the corresponding lithium ion-sieve(i.e.H-AA) was obtained after acid pickling.The chemical and morphological properties of the ion-sieve were confirmed by X-ray diffraction(XRD) and scanning electron microscopy(SEM).Both L-AA and H-AA showed characteristic peaks of α-Al2 O3 and cubic phase Li4 Mn5 O(12) and the peaks representing cubic phase could still exist after pickling.The lithium manganese oxide Li4 Mn5 O(12) could be uniformly loaded not only on the surface of α-Al2 O3 ubstrates but also inside the pores.Moreover,we found that the equilibrium adsorption capacity of H-AA was 22.9 mg·g^-1.After 12 h adsorption,the adsorption balance was reached.After 5 cycles of adsorption,the adsorption capacity of H-AA was 60.88% of the initial adsorption capacity.The process of H-AA adsorption for Li^+correlated with pseudo-second order kinetic model and Langmuir model.Adsorption thermodynamic parameters regarding enthalpy(△N), Gibbs free energy(△G) and entropy(AS) were calculated.For the dynamic adsorptiondesorption process of H-AA,the H-AA exhibited excellent adsorption performance to Li^+ with the Li^+ dynamic adsorption capacity of 9.74 mg·g^-1 and the Mn^2+dissolution loss rate of 0.99%.After 3 dynamic adsorption-desorption cycles,80% of the initial dynamic adsorption capacity was still kept. | Feng Xue Xiaoxian Zhang Yue Niu Chenhao Yi Shengui Ju Weihong Xing | 2020 | Chinese Journal of Chemical Engineering2020，28，9： | 6 |
| 12 | Comparative study on early period of recovery between minimally invasive surgery total knee arthroplasty and minimally invasive surgery-quadriceps sparing total knee arthroplasty in Chinese patients显示文摘最低限度地侵略的外科(MIS ) 的背景不同类型过程现在在全部的膝关节造形术(TKA ) 被使用了。与有一个长皮肤切口的传统的 TKA 过程相比,临床的研究证明 MIS 过程有一些优点。四头肌 sparing (QS ) 过程是最最低限度地侵略的 MIS 过程直到现在。这研究被瞄准为中国病人的 vastus medialis 发现插入类型,如果 QS 过程在病人在2006年2月和2007年5月之间的早 recovery.Methods 有一些优点, 120 个连续病人在一般麻醉, 14 个病人在之中被失去到后续下面经历了单方的主要 TKA ,留下 106 个盒子在这研究被注册。在 106 个盒子之中,有 85 右膝, 21 左膝(15 个男人和 91 个女人,与 65.1 的吝啬的年龄 ???? ￡吗? | YU Jia-kuo YU Chang-long AO Ying-fang GONG Xi WANG Yong-jian WANG Shu XING Xie CHEN Lian-xu JU Xiao-dong | 2008 | Chinese Medical Journal2008，，15： | 5 |
| 13 | Laminin/β1 integrin signal triggers axon formation by promoting microtubule assembly and stabilization显示文摘轴突说明仔细在 unpolarized 神经原的神经突之一与增加的微导管稳定在 neuronal 极化期间被联系,但是这增加的微导管稳定性怎么被完成,是不清楚的。这里,我们证明细胞外的矩阵(ECM ) 部件 laminin 经由通过 β 调整方向性的微导管汇编支持 neuronal 极化; 1 integrin (Itgb1 ) 。与在文化底层或聚苯乙烯祷告上涂的 laminin 的接触为在有教养的海马趾的神经原和外皮的片的无差别的神经突的轴突说明是足够的。活跃 Itgb1 被发现在联系 laminin 神经突被专注。轴突形成被提高和分别地发信号的 attenuating Itgb1 支持并且废除。有趣地, laminin 接触以要求了 Itgb1 的一种方式支持了正结束的微导管汇编。而且,稳定微导管部分阻止了 Itgb1 downregulation 引起的极化缺点。最后,在背面的 telencephalic 祖先的 Itgb1 的基因脱离在外皮的金字塔形的神经原的轴突开发引起了赤字。因此,发信号的 laminin/Itgb1 在轴突开始和生长起一个有启发性的作用在 vitro 并且在 vivo,通过微导管汇编的规定。这研究在 neuronal 极化期间建立了在一个外来的因素和内在的细胞骨架动力学之间的一个连接。 | Wen-Liang Lei Shi-Ge Xing Cai-Yun Deng Xiang-Chun Ju Xing-Yu Jiang Zhen-Ge Luo | 2012 | Cell Research2012，22，6： | 5 |
| 14 | The impact of the COVID‑19 outbreak on Chinese‑listed tourism stocks显示文摘This research explored the effects of the coronavirus disease(COVID-19)outbreak on stock price movements of China’s tourism industry by using an event study method.The results showed that the crisis negatively impacted tourism sector stocks.Further quantile regression analyses supported the non-linear relationship between the government’s responses and stock returns.The results present that the resurgence of the virus in Beijing did bring about a short-term negative impact on the tourism industry.The empirical results can be used for future researchers to conduct a comparative study of cultural differences concerning government responses to the COVID-19. | Wenmin Wu Chien‑Chiang Lee Wenwu Xing Shan‑Ju Ho | 2021 | Financial Innovation2021，7，1： | 3 |
| 15 | Effects of IκBα and its mutants on NF-κB and p53 signaling pathways显示文摘AIM: To study the effects of IκBα and its mutants (IκBαM, IκBα243N, IκBαM244C) on NF-κB, p53 and their downstream target genes. The relationship of NF- κB, p53, and IκBα was further discussed.METHODS: pECFP-IκBα, pECFP-IκBαM (amino acides 1-317, Ser32, 36A), pECFP-IκBα243N (amino acides 1-243), pECFP-IκBα244C (amino acides 244-317), pEYFP-p65 and pp53-DsRed were constructed and transfected to ASTC-α-1 cells. Cells were transfected with pECFP-C1 as a control. 30 h after the transfection, location patterns of NF-κB, p53 and IκBα (IκBαM, IκBα243N, IκBα244C) were observed by a laser scanning microscope (LSM510/ConfoCor2, Zeiss). RNA extraction and reverse transcription were performed in cells transfected or co-transfected with different plasmids. Effects of IκBα and its mutants on the transprition level of NF-κB, NF-κB downstream target gene TNF-α, p53 and p53 downstream target gene Bax were observed by real time QT-PCR. In all experiments β-actin was reference. Results are expressed as the target/reference ratio of the sample divided by the target/reference ratio of the control. Different transfected cells were incubated with CCK-8 for 2 h in the incubator. Then the absorbance at 450 nm was measured by using a microplate reader. RESULTS: Cells that were transfected with p53- DsRed revealed a predominant nuclear localization. YFP-p65 mainly existed in the cytoplasm. Cells were transfected with CFP-IκBα, CFP-IκBαM, and CFP- IκBα243N respectively and revealed a predominant cytosolic localization. However, cells transfected of CFP- IκBα244C revealed a predominant nuclear localization. The mRNA levels of p65, TNF-α, p53 and Bax in CFP-IκBα transfected cells did not change significantly, while in YFP-p65/CFP-IκBα co-transfected cells, IκBα decreased the transcription of p65 downstream gene TNF-α (2.24 ± 0.503) compared with the YFP-p65/ CFP-C1 co-transfected cells (5.08 ± 0.891) (P < 0.05). Phosphorylation defective IκBα (IκBαM) decreased the transcription levels of all the four genes compared with the control (P < 0.05). The N terminus of IκBα (IκBα243N) increased the transcription of NF-κB (1.84 ± 0.176) and TNF-α (1.51 ± 0.203) a little bit. However, the C terminus of IκBα (IκBα244C) increased the transcription of NF-κB, TNF-α, p53 and Bax significantly (8.29 ± 1.662, 14.16 ± 2.121, 10.2 ± 0.621, 3.72 ± 0.346) (P < 0.05). The CCK-8 experiment also showed that IκBα244C and p53 synergistically mediate apoptosis. CONCLUSIONS: IκBα and its mutants (IκBαM, IκBα243N, IκBαM244C) have different effects on NF- κB and p53 signaling pathways, according to their different structures. IκBαM bounds with NF-κB and p53 in cytoplasm steadily, and inhibits both of the two signaling pathways. p53 and IκBα244C may be co-factor in inducing apoptosis. The C terminal of IκBα enhanced cell death, which suggests that it may be a pro-apoptotic protein existed in cells. | Xian Li Da Xing Ju Wang De-Bin Zhu Lan Zhang Xiao-Jia Chen Fen-Yong Sun An Hong | 2006 | World Journal of Gastroenterology2006，12，41： | 3 |
| 16 | A review of concentrated photovoltaic-thermal(CPVT) hybrid solar systems with waste heat recovery(WHR)显示文摘In conventional photovoltaic(PV) systems, a large portion of solar energy is dissipated as waste heat since the generating efficiency is usually less than 30%. As the dissipated heat can be recovered for various applications, the wasted heat recovery concentrator PV/thermal(WHR CPVT) hybrid systems have been developed. They can provide both electricity and usable heat by combining thermal systems with concentrator PV(CPV) module, which dramatically improves the overall conversion efficiency of solar energy.This paper systematically and comprehensively reviews the research and development of WHR CPVT systems. WHR CPVT systems with innovative design configurations, different theoretical evaluation models and experimental test processes for several implementations are presented in an integrated manner. We aim to provide a global point of view on the research trends, market potential, technical obstacles, and the future work which is required in the development of WHR CPVT technology. Possibly, it will offer a generic guide to the investigators who are interested in the study of WHR CPVT systems. | Xing Ju Chao Xu Zhirong Liao Xiaoze Du Gaosheng Wei Zhifeng Wang Yongping Yang | 2017 | Science Bulletin2017，62，20： | 3 |
| 17 | An investigation on application potentiality of microstructure heat sinks with different flow topological morphology显示文摘Microstructure heat sinks have great potential for high heat flux cooling.In this paper,we compared microchannel(MC),micro-pin-fin(MPF),manifold microchannel(MMC),and manifold micro-pin-fin(MMPF)heat sinks to figure out the pros and cons.Fluid flow and manifold unit models are used to study thermal and hydrodynamic performance.The heat sinks with different channel/fin sizes,manifold numbers,and porosities are discussed according to the pressure drop,temperature,thermal resistance,and coefficient of performance.Results show that MMC and MMPF heat sinks are superior to MC and MPF heat sinks,and there are also differences between MMC and MMPF heat sinks.Typically,the MMPF heat sink has lower maximum temperature,temperature non-uniformity,and total thermal resistance R_(tot).In contrast,the MMC heat sink has a lower pressure drop and higher COP.For the MMPF heat sink,at the nozzle width of 6.75μm and the MPF width of 70.71μm(porosity=0.167),it achieves the lowest total thermal resistance of R_(tot)=2.97×10^(-6)K m^(2)/W.Under 10^(3)W/cm^(2)heat flux,the maximum surface temperature rise is 29.74 K,and the maximum temperature difference of the heating surface is 3.15 K.This research initially provides a clear reference on the selection of single-phase cooling microstructures for ultra-high heat flux dissipation. | YAO XiaoLe SHI QianLei LIU Qian QIN Le JU Xing XU Chao | 2022 | Science China(Technological Sciences)2022，65，12： | 2 |
| 18 | Nitrogen runoff dominates water nitrogen pollution from rice-wheat rotation in the Taihu Lake region of China显示文摘 | Xu Zhao Yang Zhou Ju Min Shenqiang Wang Weiming Shi Guangxi Xing | 2012 | Agriculture Ecosystems and Environment2012，，： | 2 |
| 19 | Optimization of energy efficiency for the full-duplex massive MIMO systems显示文摘The energy efficiency(EE) for the full-duplex massive multi-input multi-output(MIMO) system is investigated. Given the transmit powers of both the uplink and the downlink, the closed-form solutions of the optimal number of antennas and the maximum EE are achieved in the high regime of the signal-to-noise ratio(SNR). It is shown that the optimal number of antennas and the maximum EE gets larger with the increase in user numbers. To further improve the EE, an optimization algorithm with low complexity is proposed to jointly determine the number of antennas and the transmit powers of both the uplink and the downlink. It is shown that, the proposed algorithm can achieve the system performance very close to the exhaustive search. | Xinhua Wang Ju Liu Chao Zhai Pengbo Xing Lina Zheng | 2016 | Journal of Systems Engineering and Electronics2016，27，2： | 2 |
| 20 | Dynamic analysis of a concentrating photovoltaic/concentrating solar power (CPV/CSP) hybrid system显示文摘Concentrating photovoltaic/concentrating solar power(CPV/CSP)systems suffer from varying irradiation and extreme working conditions.In this study,a dynamic physical model is developed for the CPV/CSP hybrid system to analyze the dynamic responses of several key parameters,such as the solar radiation saltation or linear variation to represent the typical weather variations.The results show that the hybrid system could rapidly reach the steady state in less than about 53 s after the solar radiation saltation increases or decreases by 10%.The response time reflects that the thermal hysteresis of the hybrid system is mainly determined by varying the outlet temperature of R134a from the solar thermal receiver.Meanwhile,when the solar radiation changes linearly,a lower gradient is beneficial to remit the thermal hysteresis of the hybrid system and improve the thermal stability,and the parameters could be treated as the steady state values with a gradient of less than 0.2 W m^-2 s^-1.Afterward,the quasi-steady state model was used to analyze the all-day dynamic performance of the hybrid system.It shows that the power output and the flow rate are directly related to the direct normal irradiance(DNI),while the outlet temperature of R134a vapor could be almost constant except for the starting and stopping periods. | HAN Xue XU Chao PAN XinYu JU Xing DU XiaoZe | 2019 | Science China(Technological Sciences)2019，62，11： | 2 |
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