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| 1 | Investigation of the characteristics and deactivation of catalytic active center of Cr-Al_2O_3 catalysts for isobutane dehydrogenation显示文摘Deactivation mechanism of Cr-Al2O3 catalyst and the interaction of Cr-Al in the dehydrogenation of isobutane, as well as the nature of the catalytic active center, were studied using XRD, SEM, XPS, H2-TPR, isobutane-TPR and TPO techniques. The results revealed that the deactivation of Cr-Al2O3 catalyst was mainly caused by carbon deposition on its surface. The Cr3+ion could not be reduced by hydrogen but could be reduced to Cr2+by hydrocarbons and monoxide carbon. The active center for isobutane dehydrogenation could be Cr2+/Cr3+produced from Cr6+by the on line reduction of hydrocarbon and carbon monoxide. The binding energy of Al3+was strongly affected by the state of chromium cations in the catalysts. | Deren Fang Jinbo Zhao Wanjun Li Xu Fang Xin Yang Wanzhong Ren Huimin Zhang | 2015 | Journal of Energy Chemistry2015，24，1： | 8 |
| 2 | Remote sensing of human beings-a perspective from nighttime light显示文摘City lights,fishing boats,and oil fields are the major sources of nighttime lights,therefore the nighttime light images provide a unique source to map human beings and their activities from outer space.While most of the scholars focused on application of nighttime light remote sensing in urbanization and regional development,the actual fields are much wider.This paper summarized the applications of nighttime light remote sensing into fields such as the estimation of socioeconomic parameters,monitoring urbanization,evaluation of important events,analyzing light pollution,fishery,etc.For estimation of socioeconomic parameters,the most promising progress is that Gross Domestic Product and its growth rate have been estimated with statistical data and nighttime light data using econometric models.For monitoring urbanization,urban area and its dynamics can be extracted using different classification methods,and spatial analysis has been employed to map urban agglomeration.As sharp changes of nighttime light are associated with important socioeconomic events,the images have been used to evaluate humanitarian disasters,especially in the current Syrian and Iraqi wars.Light pollution is another hotspot of nighttime light application,as the night light is related to some diseases and abnormal behavior of animals,and the nighttime light images can provide light pollution information on large scales so that it is much easier to analyze the effects of light pollutions.In each field,we listed typical cases of the applications.At last,future studies of nighttime light remote sensing have been predicted. | Deren Li Xia Zhao Xi Li | 2016 | Geo-Spatial Information Science2016，19，1： | 4 |
| 3 | Influence of post-grown treatments on CuInS_2 thin films prepared by sulphurization of Cu-In films显示文摘Polycrystalline CuInS2 (CIS) films were prepared by sulphurization of Cu-In films. The surface morphology and phase composition of the as-grown film, the KCN-etched film, and the annealed KCN-etched film were investigated. During the sulphurization, the secondary CuxS phase segregated on the surface of the as-grown films. To improve the crystalline quality of CuInS2 films, a series of post-grown treatments, such as KCN-etching and vacuum annealing KCN-etched films, were performed on the as-grown films. Both as-grown and post-treated films were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS). The results indicated that a CuxS secondary phase segregated on the surface of the as-grown film, which could be removed effectively by KCN etching. After the vacuum annealing treatment, the KCN-etched film had a sphalerite structure with (112) preferred orientation. Meanwhile, the crystalline quality of the CIS film was significantly improved, which provided a novel method to improve the performance of thin film solar cells. | YAN Youhua LIU Yingchun FANG Ling ZHAO Haihua LI Deren LU Zhichao ZHOU Shaoxiong | 2008 | Rare Metals2008，27，5： | 2 |
| 4 | Sorl1 knockout inhibits expression of brain-derived neurotrophic factor:involvement in the development of late-onset Alzheimer's disease显示文摘Sortilin-related receptor 1(SORL1)is a critical gene associated with late-onset Alzheimer’s disease.SORL1 contributes to the development and progression of this neurodegenerative condition by affecting the transport and metabolism of intracellularβ-amyloid precursor protein.To better understand the underlying mechanisms of SORL1 in the pathogenesis of late-onset Alzheimer s disease,in this study,we established a mouse model of SorI1 gene knockout using cluste red regularly inters paced short palindro mic repeats-associated protein 9 technology.We found that Sorl1-knocko ut mice displayed deficits in learning and memory.Furthermore,the expression of brain-derived neurotrophic factor was significantly downregulated in the hippocampus and co rtex,and amyloidβ-protein deposits were observed in the brains of 5orl1-knockout mice.In vitro,hippocampal neuronal cell synapses from homozygous Sorl1-knockout mice were impaired.The expression of synaptic proteins,including Drebrin and NR2B,was significantly reduced,and also their colocalization.Additionally,by knocking out the Sorl1 gene in N2a cells,we found that expression of the N-methyl-D-aspartate receptor,NR2B,and cyclic adenosine monophosphate-response element binding protein was also inhibited.These findings suggest that SORL1 participates in the pathogenesis of late-onset Alzheimer s disease by regulating the N-methyl-D-aspartate receptor NR2B/cyclic adenosine monophosphate-response element binding protein signaling axis. | Mingri Zhao Xun Chen Jiangfeng Liu Yanjin Feng Chen Wang Ting Xu Wanxi Liu Xionghao Liu Mujun Liu Deren Hou | 2024 | Neural Regeneration Research2024，19，7： | 2 |
| 5 | Light-emitting diodes based on colloidal silicon quantum dots显示文摘Colloidal silicon quantum dots(Si QDs) hold great promise for the development of printed Si electronics. Given their novel electronic and optical properties, colloidal Si QDs have been intensively investigated for optoelectronic applications. Among all kinds of optoelectronic devices based on colloidal Si QDs, QD light-emitting diodes(LEDs) play an important role. It is encouraging that the performance of LEDs based on colloidal Si QDs has been significantly increasing in the past decade. In this review, we discuss the effects of the QD size, QD surface and device structure on the performance of colloidal Si-QD LEDs. The outlook on the further optimization of the device performance is presented at the end. | Shuangyi Zhao Xiangkai Liu Xiaodong Pi Deren Yang | 2018 | Journal of Semiconductors2018，39，6： | 2 |
| 6 | Effects of Germanium on Movement of Dislocations in p-Type Czochralski Silicon显示文摘By indentation at room temperature followed by annealing at high temperatures, the pinning effect of germanium on dislocations in germanium-doped Czochralski silicon was investigated. Experimental results show that the dislocations in germanium-doped Czochralski silicon move shorter and slower than those in Czochralski silicon undoping with germanium when the concentration of germanium is over 1×1018 cm-3. The retarding velocity of dislocations is contributed to the dislocations pinning effect of the strain field introduced by the high concentration germanium, and the Ge4B cluster and the oxygen precipitation those are preferred to form at higher concentration germanium. | Li Dongsheng Zhao Yiying Yang Deren | 2006 | Journal of Rare Earths2006，24，z1： | 1 |
| 7 | Ancient Architce ture Point Cloud Data Segmentation Based on Modified Fuzzy C-Means Clustvring Algorithm 显示文摘 | Jiangtong Zhao Deren Li Yanmin Wang | 2008 | Proceedings of SPIEI- CEODPA 2008 Wuhan China2008，12，： | 1 |
| 8 | 显示文摘 | Zhao Yue Li Dongsheng Yang Deren | 2005 | Physica B2005，364，14： | 1 |
| 9 | Identification of Xunxi Shujin Decoction by TLC显示文摘[Objectives]To establish a TLC qualitative method for the determination of Radix Aconiti,Radix Aconiti Kusnezoffii,Caesalpinia sappan L.and Radix zanthoxyli.[Methods]TLC was used to study the quality of Radix Aconiti,Radix Aconiti Kusnezoffii and C.sappan L.in Xunxi Shujin Decoction,and the influencing factors were investigated to optimize the TLC conditions.[Results]In the TLC identification test of Radix Aconiti,Radix Aconiti Kusnezoffii,C.sappan L.and R.zanthoxyli in Xunxi Shujin Decoction,the spots were clear,the resolution was good,the specific value was moderate,the negative control was not disturbed,and the specificity was strong.[Conclusions]The established TLC method was simple,specific and reproducible,and could be used for the quality control of Xunxi Shujin Decoction. | Fengxian ZHAO Yuanming ZHONG Deren LI Yong CHEN Chaolan WANG Jian CUI | 2024 | Medicinal Plant2024，15，1： | 0 |
| 10 | Blue light emission of porous silicon subjected to RTP treatments显示文摘多孔的硅样品在不同情形(N_2, Ar, O_2 和空气) 下面与快速的热过程(RTP ) 被对待。在处理前后,样品借助于光谱学和 Fourier 转变的光致发光(PL ) 被检查红外线的光谱学(FTIR ) 。排放山峰在多孔的硅样品的 PL 系列被发现的四盏蓝灯在 400 deg C 上面在温度使遭到了到 RTP 处理,山峰位置被发现不与 RTP 处理的情形和温度变化。它在 RTP 处理期间由于氧化被认为那,在多孔的硅的 Si 水晶的杆尺寸减少了,导致轻排放的蓝移动。与 Si 晶体大小相关不连续的假设和以前的研究人员“理论计算, PL 山峰位置没与 theRTP 温度和情形变化。 | ZHAO Yi YANG Deren LIN Lei QUE Duanlin | 2006 | Chinese Science Bulletin2006，51，22： | 0 |
| 11 | A Class of Iteration Method for the Best Approximation Problems显示文摘AClasofIterationMethodfortheBestApproximationProblemsWangDerenZhaoFengguang(ColegeofSciences)AbstractWeproposeaclassofiterati... | Wang Deren Zhao Fengguang (College of Sciences) | 1998 | Advances in Manufacturing1998，，1： | 0 |
| 12 | Multi-temporal urban semantic understanding based on GF-2 remote sensing imagery:from tri-temporal datasets to multi-task mapping显示文摘High resolution satellite images are becoming increasingly available for urban multi-temporal semantic understanding.However,few datasets can be used for land-use/land-cover(LULC)classification,binary change detection(BCD)and semantic change detection(SCD)simultaneously because classification datasets always have one time phase and BCD datasets focus only on the changed location,ignoring the changed classes.Public SCD datasets are rare but much needed.To solve the above problems,a tri-temporal SCD dataset made up of Gaofen-2(GF-2)remote sensing imagery(with 11 LULC classes and 60 change directions)was built in this study,namely,the Wuhan Urban Semantic Understanding(WUSU)dataset.Popular deep learning based methods for LULC classification,BCD and SCD are tested to verify the reliability of WUSU.A Siamese-based multi-task joint framework with a multi-task joint loss(MJ loss)named ChangeMJ is proposed to restore the object boundaries and obtains the best results in LULC classification,BCD and SCD,compared to the state-of-the-art(SOTA)methods.Finally,a large spatial-scale mapping for Wuhan central urban area is carried out to verify that the WUsU dataset and the ChangeMJ framework have good application values. | Sunan Shi Yanfei Zhong Yinhe Liu Jue Wang Yuting Wan Ji Zhao Pengyuan Lv Liangpei Zhang Deren Li | 2023 | International Journal of Digital Earth2023，16，1： | 0 |
| 13 | Improving anti-Gram-positive-bacterial performance and osteogenesis for zinc alloy via mussel mimetic polydopamine with non-antibiotic lysozyme and parathyroid hormone显示文摘In this work,a novel coating with a non-antibiotic agent for inhibiting Gram-positive bacteria and promoting osteogenesis was prepared on zinc-aluminium alloy(ZA6-1)via mussel mimetic polydopamine(PDA)containing lysozyme(LYS)and parathyroid hormone(PTH).The results indicate that as-deposited coatings can efficiently decrease the degradation rate of ZA6-1 from 0.52 to 0.16 mm/year,and the addition of LYS weakens the coating resistance,while the addition of PTH enhances the coating resis-tance.In spite that no obvious inhibition of Escherichia coli is observed,the coated zinc alloys show good in vitro antibacterial performance against Staphylococcus aureus.Compared with ZA6-1 zinc alloys,the increase of antibacterial efficacy reaches 86.9%-90.1%.Furthermore,the lower hydrophilicity(26.4°),higher osteoblast cell viability(>100%),good osteoblast cell morphology and better osteoblast cell differentiation(ALP=107.7%)for PDA-LYS/PTH coated samples support that as-prepared coating is promising for modifying biodegradable zinc implants. | Deren Zhao Tianhao Chen Jinqian Chen Banglun Huang Jihua Nie Hulin Liu Yangkai Liu Zilin Chen Feng Zou Qiqi Lu Xiaodong Tan Yunjie Xiang Jing Li Yongping Zhang Xue Feng Xi Rao | 2023 | Biosurface and Biotribology2023，9，4： | 0 |
| 14 | Erratum to:Improving near-infrared quantum-dot light-emitting diodes to mimic synaptic plasticity(vol 62,issue 10,page 1470,2019)显示文摘In the version of the article originally published in the volume 62,issue 10,2019 of Sci.China Mater,(page 1470-1478,http://gffzzd3cc09b8251d45dfskooq5knc9f9565xu.ffgz.tsg.suse.edu.cn/10.1007/s40843-019-9437-9),wrong images of Figs 3 and 4 were used.The corrected version appears below:the units of the x-axes in Fig.3h,the inset of Fig.4a,and Fig.4b,d should be h,s,s,and s,respectively. | Shuangyi Zhao Yue Wang Wen Huang Hao Jin Peiwen Huang Hu Wang Kun Wang Dongsheng Li Mingsheng Xu Deren Yang Xiaodong Pi | 2021 | Science China Materials2021，64，12： | 0 |
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