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| 1 | Total mesopancreas excision for pancreatic head cancer: analysis of 120 cases显示文摘Objective: To evaluate the feasibility and safety of total mesopancreas excision(TMpE) in the treatment of pancreatic head cancer. Methods: The clinical and pathological data of 120 patients with pancreatic head cancer who had undergone TMpE in our center from May 2010 to January 2014 were retrospectively analyzed. Results: The mean operative time was(275.0±50.2) min and the average intra-operative blood loss was(390.0±160.5) mL. Post-operative complications were reported in 45 patients, while no peri-operative death was noted. The specimen margins were measured in three dimensions, and 86 patients(71.6%) achieved R0 resection. Conclusions: TMpE is safe and feasible for pancreatic head cancer and is particularly helpful to increase the R0 resection rate. | Wenguang Wu Xu'an Wang Xiangsong Wu Maolan Li Hao Weng Yang Cao Ruifa Bao Sijun Su Jianhua Lu Wei Gong Weibin Shi Jun Gu Xuefeng Wang Yingbin Liu Zhiwei Quan Shuyou Peng | 2016 | Chinese Journal of Cancer Research2016，28，4： | 10 |
| 2 | Temperature field distribution of burnt surrounding rock in UCG stope显示文摘In order to study temperature field distribution in burnt surrounding rock and to determine ranges of burnt surrounding rock, coal-wall coking cycle and heat influence in the underground coal gasification(UCG) stope, based on the Laplace transform and inversion formula, we studied the temperature analytical solution of one-dimensional unsteady heat conduction for multi-layer overlying strata under the first and the forth kinds of boundary conditions, and we also carried out a numerical simulation of twodimensional unsteady heat conduction by the COMSOL multiphysics. The results show that when the boundary temperature of surrounding rock has a linear decrease because of a directional movement of heat source in the UCG flame working face, the temperature in surrounding rock increases first and then decreases with time, the peak of temperature curve decreases gradually and its position moves inside surrounding rock from the boundary. In the surrounding rock of UCG stope, there is an envelope curve of temperature curve clusters. We analyzed the influence of thermophysical parameters on envelope curves and put forward to take envelope curve as the calculation basis for ranges of burnt surrounding rock, coal-wall coking cycle and heat influence. Finally, the concrete numerical values are given by determining those judgement standards and temperature thresholds, which basically tally with the field geophysical prospecting results. | Xin Lin Wang Zuotang Huang Wengang Kang Guojun Lu Xuefeng Zhang Peng Wang Jianhua | 2014 | International Journal of Mining Science and Technology2014，24，4： | 10 |
| 3 | A Discussion on the Origin of Shale Reservoir Inter-Laminar Fractures in the Shahejie Formation of Paleogene, Dongying Depression显示文摘This paper was conducted on the shale reservoir in the Dongying depression in the Shahejie Formation of Paleogene. Based on detailed core description, rock thin sections, argon ion polishing, scanning electron microscopy(SEM) analysis, CT scanning and carbon-oxygen isotopic test, the formation mechanism of the inter-laminar fractures(or seams) and their development conditions were discussed by comprehensive analysis of the diagenetic evolution features and the reservoir space evolution characteristics. The results show that the laminated composite pattern in Dongying depression was dominated by vertical distribution of laminated calcite and clay minerals. Contrasted to the traditional understanding, development degree of inter-laminar fractures was much lower. Pure fluid between layers cannot exist without framework minerals, and the pre-existing well connected pore or horizontal overpressure micro seam was favorable paths of fluid migration. From the points of inter-laminar fractures origin mechanism and its evolution, the so called seams, were much more complex than traditional understanding that hydrocarbon generation raised the pore pressure and led to the parallel microfractures. But the inter-laminar fractures had little relationship with that whether the lamination was developed or bedding boundary was clear or not. In fact, the shale reservoir inter-laminar fractures were not rigorous fracture. They were controlled by pre-existing inter-granular pore(or seam) or dissolved pore, which distributed along carbonate laminae boundary and were connected by later super pressure, dissolution and the seepage force. And the development conditions were burial depth(bigger than 3 000 m) and the Ro value(>0.6%). Discussion on its origin and evolution has important petroleum geological significance on optimizing reservoir segment and favorable target areas selection. | Huimin Liu Shun Zhang Guoqi Song Shoupeng Zhang Xuefeng Hao Zhonghuai Xie Ningning Xu Peng Liu | 2017 | Journal of Earth Science2017，28，6： | 10 |
| 4 | Cold hardiness estimation of Pinus densiflora var. zhangwuensis based on changes in ionic leakage, chlorophyll fluorescence and other physiological activities under cold stress显示文摘Pinus densiflora var. zhangwuensis grows fast,and its drought and salinity resistance are better than Pinus sylvestris var. mongolica. We compared cold hardiness and mechanisms of cold hardiness between the two species, to provide a theoretical basis for promoting and applying P.densiflora var. zhangwuensis in cold regions. A cold stress experiment was carried out on 3-year-old plantlets of P.densiflora var. zhangwuensis and P. sylvestris var. mongolica after hardening at five temperature regimes, 5,-10,-20,-40, and-60℃, respectively. Some indices of needle samples for both species were measured, such as relative conductivity(REL), maximum photochemical efficiency(F_v/F_m), malondialdehyde(MDA), catalase(CAT), proline(Pro), soluble sugar(SS), and stomata density. REL and MDA values of both species after hardening had the same trend of increasing, but the trend was opposite in F_v/F_mvalue with increasing cold stress. Compared with P. sylvestris var. mongolica, the P. densiflora var. zhangwuensis had smaller increases in REL and MDA,and a smaller decline in F_v/F_mduring cold stress. Compared to the control, REL growth of P. densiflora var.zhangwuensis and P. sylvestris var. mongolica at-60℃ were 0.41 and 0.60, and MDA growth was 29.94 mol g^-1FW and 47.80 mol g^-1FW, and F_v/F_mdeclines were 0.08 and 0.27. Half-lethal temperatures(LT_50) calculated by logistic equation for P. densiflora var. zhangwuensis and P.sylvestris var. mongolica were-58.23 and-50.34℃,respectively. These data suggest that cold resistance of P.densiflora var. zhangwuensis is stronger than that of P.sylvestris var. mongolica. Cold-resistance mechanisms of the two species differed. In response to cold stress, P.sylvestris var. mongolica had strong osmotic adjustment ability because of higher Pro and SS content, while P.densiflora var. zhangwuensis had strong antioxidant ability due to stronger CAT activity. Stomata density and diameter of P. densiflora var. zhangwuensis were smaller, as were single leaf area and number of leaves per plant, both characteristics promoting survival in a cold environment.Greater shoot height and total biomass of seedlings of P.densiflora var. zhangwuensis might be another reason for its stronger cold tolerance. | Peng Meng Xuefeng Bai Hongdan Li Xiaodong Song Xueli Zhang | 2015 | Journal of Forestry Research2015，26，3： | 8 |
| 5 | ZBP1(DAI/DLM-1) promotes osteogenic differentiation while inhibiting adipogenic differentiation in mesenchymal stem cells through a positive feedback loop of Wnt/β-catenin signaling显示文摘The lineage specification of mesenchymal stem/stromal cells(MSCs) is tightly regulated by a wide range of factors. Recently, the versatile functions of ZBP1(also known as DAI or DLM-1) have been reported in the blood circulation and immune systems.However, the biological function of ZBP1 during the lineage specification of MSCs is still unknown. In the present study, we found that ZBP1 was upregulated during osteogenesis but downregulated during adipogenesis in mouse bone marrow-derived MSCs(m BMSCs). ZBP1 was highly expressed in osteoblasts but expressed at a relatively low level in marrow adipocytes. Knockdown of ZBP1 inhibited alkaline phosphataseactivity, extracellular matrix mineralization, and osteogenesis-related gene expression in vitro and reduced ectopic bone formation in vivo. Knockdown of ZBP1 also promoted adipogenesis in MSCs in vitro. Conversely, the overexpression of ZBP1 increased the osteogenesis but suppressed the adipogenesis of MSCs. When the expression of ZBP1 was rescued, the osteogenic capacity of ZBP1-depleted m BMSCs was restored at both the molecular and phenotypic levels.Furthermore, we demonstrated that ZBP1, a newly identified target of Wnt/β-catenin signaling, was required for β-catenin translocation into nuclei. Collectively, our results indicate that ZBP1 is a novel regulator of bone and fat transdifferentiation via Wnt/β-catenin signaling. | Xuefeng Zhao Liang Xie Zhiyong Wang Jiongke Wang Hao Xu Xianglong Han Ding Bai Peng Deng | 2020 | Bone Research2020，8，2： | 8 |
| 6 | Surface-enhanced Raman scattering on dielectric microspheres with whispering gallery mode resonance显示文摘Conventionally, metallic nanostructures are used for surface-enhanced Raman spectroscopy(SERS), but recently there has been increasing interest in the enhancement of Raman scattering from dielectric substrates due to their improved stability and biocompatibility compared with metallic substrates. Here, we report the observation of enhanced Raman scattering from rhodamine 6 G molecules coated on silica microspheres. We excite the whispering gallery modes(WGMs) supported in the microspheres with a tapered fiber coupler for efficient WGM excitation, and the Raman enhancement can be attributed to the WGM mechanism. Strong resonance enhancement in pump laser intensity and modified Raman emission from the Purcell effect in the microsphere resonator are observed from the experiment and compared with theoretical results. A total Raman enhancement factor of 1.4 × 10~4 is observed, with contribution mostly from the enhancement in pump laser intensity. Our results show that, with an efficient pumping scheme, dielectric microspheres are a viable alternative to metallic SERS substrates. | STEVEN H.HUANG XUEFENG JIANG Bo PENG COREY JANISCH ALEXANDER COCKING SAHIN KAYA OZDEMIR ZHIWEN LIU LAN YANG | 2018 | Photonics Research2018，6，5： | 7 |
| 7 | Clinical and microbiological characterization of Clostridium difficile infection in a tertiary care hospital in Shanghai, China显示文摘 | Dong Danfeng Peng Yibing Zhang Lihua Jiang Cen Wang Xuefeng Mao Enqiang | 2014 | Chinese Medical Journal2014，，9： | 3 |
| 8 | Hepatopancreatoduodenectomy for advanced biliary malignancies显示文摘Background:Hepatopancreatoduodenectomy(HPD)has been considered the only curative treatment for metastatic cholangiocarcinoma and some locally advanced gallbladder cancers(GBCs).However,HPD has not yet been included in treatment guidelines as a standard surgical procedure in consideration of its morbidity and mortality rates.The aim of this study was to evaluate the safety and effectiveness of HPD in treating biliary malignancies.Methods:The medical records of 57 patients with advanced biliary cancer undergoing HPD from January 2009 to December 2019 were retrospectively retrieved.A case-control analysis was conducted at our department.Patients with advanced GBC who underwent HPD(HPD-GBC group)were compared with a control group(None-HPD-GBC group).Baseline characteristics,preoperative treatments,tumor pathologic features,operative results,and prognosis were assessed.Results:Thirteen patients with cholangiocarcinoma and 44 patients with GBC underwent HPD at our department.Significant postoperative complications(grade III or greater)and postoperative pancreatic fistula were observed in 24(42.1%)and 15(26.3%)patients,respectively.One postoperative death occurred in the present study.Overall survival(OS)was longer in patients with advanced cholangiocarcinoma than in those with GBC(median survival time[MST],31 months vs.11 months;P<0.001).In the subgroup analysis of patients with advanced GBC,multivariate analysis demonstrated that T4 stage tumors(P=0.012),N2 tumors(P=0.001),and positive margin status(P=0.004)were independently associated with poorer OS.Patients with either one or more prognostic factors exhibited a shorter MST than patients without those prognostic factors(P<0.001).Conclusion:HPD could be performed with a relatively low mortality rate and an acceptable morbidity rate in an experienced highvolume center.For patients with advanced GBC without an N2 or T4 tumor,HPD can be a preferable treatment option. | Xiangsong Wu Maolan Li Wenguang Wu Xu’an Wang Huaifeng Li Runfa Bao Yijun Shu Jun Shen Jun Gu Xuefeng Wang Wei Gong Shuyou Peng Yingbin Liu | 2022 | Chinese Medical Journal2022，135，23： | 3 |
| 9 | Integrating global socio-economic influences into a regional land use change model for China显示文摘与快速的经济开发和都市化,在中国的陆地使用在最近的年里经历了巨大的变化;并且这以后将可能继续。在中国的陆地使用问题是迫切的并且需要推进学习。快速的陆地使用变化和经济开发为综合陆地使用变化研究使中国成为一个理想的区域,特别地多重因素的考试和在全球经济集成的上下文的全球地区性的相互作用。这份报纸论述一条综合建模途径在使用在地区性的规模改变的土地上检验全球社会经济的过程的影响。我们由联合一个简单全球社会经济的模型(GLOBFOOD ) 和地区性的空间分配模型(线索) 开发一个综合模型系统。模型系统用一个应用程序被说明在中国打使用。为一个给定的气候变化,人口生长,和各种各样的社会经济的状况,一个全球社会经济的模型在陆地使用上模仿全球市场和经济的影响,并且确定不同土地的变化使用类型。空间分发模型决定的陆地使用在由采用一个加权的适用性索引的每个空间格子很适当的陆地使用的类型,源于生态系统国家和地点条件的专家知识。一系列模型模拟将被进行并且分析了表明综合模型的能力与使用在中国改变的地区性的土地连接全球社会经济的因素。结果在中国允许陆地使用和风景的未来动力学的探索[出版摘要] | Xia XU Qiong GAO Changhui PENG Xuefeng CUI Yinghui LIU Li JIANG | 2014 | Frontiers of Earth Science2014，8，1： | 2 |
| 10 | Two-Year Observation of Fossil Fuel Carbon Dioxide Spatial Distribution in Xi’an City显示文摘The need for atmospheric carbon dioxide(CO2)reduction in the context of global warming is widely acknowledged by the global scientific community.Fossil fuel CO2(CO2ff)emissions occur mainly in cities,and can be monitored directly with radiocarbon(14 C).In this research,annual plants[Setaria viridis(L.)Beauv.]were collected from 26 sites in 2013 and2014 in the central urban district of Xi’an City.The△14C content of the samples were analyzed using a 3 MV Accelerator Mass Spectrometer,and CO2ff concentrations were calculated based on mass balance equations.The results showed that the CO2ff mixing ratio ranged from 15.9 to 25.0 ppm(part per million,equivalent toμmol mol-1),with an average of 20.5 ppm in 2013.The range of measured values became larger in 2014,from 13.9 ppm to 33.1 ppm,with an average of 23.5 ppm.The differences among the average CO2ff concentrations between the central area and outer urban areas were not statistically significant.Although the year-to-year variation of the CO2ff concentration was significant(P<0.01),there was a distinctly low CO2 ff value observed in the northeast corner of the city.CO2 ff emiissions from vehicle exhaust and residential sources appeared to be more significant than two thermal power plants,according to our observed CO2 ff spatial distribution.The variation of pollution source transport recorded in our observations was likely controlled by southwesterly winds.These results could assist in the optimal placement of regional CO2 monitoring stations,and benefit the local government in the implementation of efficient carbon emission reduction measures. | Xiaohu XIONG Weijian ZHOU Shugang WU Peng CHENG Hua DU Yaoyao HOU Zhenchuan NIU Peng WANG Xuefeng LU Yunchong FU | 2020 | Advances in Atmospheric Sciences2020，37，6： | 2 |
| 11 | Ultrahigh rate capability of 1D/2D polyaniline/titanium carbide(MXene)nanohybrid for advanced asymmetric supercapacitors显示文摘High energy density and enhanced rate capability are highly sought-after for supercapacitors in today's mobile world.In this work,polyaniline/titanium carbide(MXene)(PANI/Ti3C2Tx)nanohybrid is synthesized through a facile and cost-effective self-assembly of.one-dimensional(10)PANI nanofibers and two-dimensional(20)Ti3C2Tx nanosheets.PANl!Ti3C2Tx delivers greatly improved specific capacitance,ultrahigh rate capability(67%capacitance retention from 1 to 100 A·g^(-1))as well as good cycle stability.Electrochemical kinetic analysis reveals that PANI/Ti3C2Tx is featured with surface capacitance-dominated process and has a quasi-reversible kinetics at high scan rates,giving rise to an ultrahigh rate capability.By using PANl!Ti3C2Tx as positive electrode,an 1.8 V aqueous asymmetric supercapacitor(ASC)is successfully assembled,showing a maximum energy density of 50.8 Wh·kg^(-1)·(at 0.9 kW-kg-1)and a power density of 18 kW·kg^(-1)(at 26 Wh·kg^(-1)).Moreover,an 3.0 V organic ASC is also elaborately fabricated,·by using PANI/Ti3C2Tx,achieving an ultrahigh energy density of 67.2 Wh·kg^(-1)(at 1.5 kW·kg^(-1))and a power density of 30 kW·kg^(-1)·(at 26.8 Wh·kg^(-1)).The present work not only improves fundamental understanding of the structure-property relationship towards ultrahigh rate capability electrode materials,but also provides valuable guideline for the rational design of high-performance:energy storage devices with both high energy and power densities. | Jinhua Zhou Qi Kang Shuchi Xu Xiaoge Li Cong Liu Lu Ni Ningna Chen Chunliang Lu Xizhang Wang Luming Peng Xuefeng Guo Weiping Ding Wenhua Hou | 2022 | Nano Research2022，15，1： | 2 |
| 12 | Microstructures and properties of cancellous bone of avascular necrosis of femoral heads显示文摘这研究的目的是调查显微镜的结构并且描绘大腿骨的头(ANFH ) 的 avascular 坏死的 cancellous 骨头。ANFH 的兔子模型被建立。组织病理学说的特征成功地被学习。类固醇注射组(S.G ) 和控制的组(C.G ) 之间的差别被检验,包括兔子, hematological 考试和三维的结构的重量。triglyceride (TG ) 什么时候在 S.G 增加了,被发现胆固醇(CHO ) 的血浆层次,高密度的脂蛋白(HDL ) 和在 S.G 的低密度的脂蛋白(LDL ) 是比在 C.G 的那些低的;但是骨头矿物质内容( BMC )和机关和织物的结构的模型索引( SMI )在大腿骨的头的 S.G 三维的结构显著地减少了用扫描的微计算断层摄影术( CT )被获得,机械模型被建立分析这些结构的变化的影响在上 cancellous 骨头的机械性质。大腿骨的头的关键词 Avascular 坏死 - Cancellous 骨头 - 微观结构 - 机械性质工程被中国(30470430 和 30400514 ) 的国家自然科学基础支持。 | Xuefeng Yao Peng Wang Ruchun Dai Hsien Yang Yeh | 2010 | Acta Mechanica Sinica2010，26，1： | 2 |
| 13 | Genome-wide analysis of NDR1/HIN1-like genes in pepper(Capsicum annuum L.)and functional characterization of CaNHL4 under biotic and abiotic stresses显示文摘Plant NDR1/HIN1-like(NHL)genes play an important role in triggering plant defenses in response to biotic stresses.In this study,we performed a genome-wide identification of the NHL genes in pepper(Capsicum annuum L.)and characterized the functional roles of these CaNHL genes in response to abiotic stresses and infection by different pathogens.Phylogenetic analysis revealed that CaNHLs can be classified into five distinct subgroups,with each group containing generic and specific motifs.Regulatory element analysis showed that the majority of the promoter regions of the identified CaNHLs contain jasmonic acid(JA)-responsive and salicylic acid(SA)-responsive elements,and transcriptomic analysis revealed that CaNHL genes are expressed in all the examined tissues of pepper.The CaNHL1,CaNHL4,CaNHL6,CaNHL10,CaNHL11,and CaNHL12 genes were significantly upregulated under abiotic stress as well as in response to different pathogens,such as TMV,Phytophthora capsici and Pseudomonas syringae.In addition,we found that CaNHL4 localizes to the plasma membrane.CaNHL4-silenced pepper plants display significantly increased susceptibility to TMV,Phytophthora capsici and Pseudomonas syringae,exhibiting reduced expression of JA-related and SA-related genes and reduced ROS production.However,transient overexpression of CaNHL4 in pepper increases the expression of JArelated and SA-related genes,enhances the accumulation of ROS,and inhibits the infection of these three pathogens.Collectively,for the first time,we identified the NHL genes in pepper and demonstrated that CaNHL4 is involved in the production of ROS and that it also regulates the expression of JA-related and SA-related genes in response to different pathogens,suggesting that members of the CaNHL family play an essential role in the disease resistance of pepper. | Changyun Liu Haoran Peng Xinyu Li Chaolong Liu Xing Lv Xuefeng Wei Aihong Zou Jian Zhang Guangjin Fan Guanhua Ma Lisong Ma Xianchao Sun | 2020 | Horticulture Research2020，7，1： | 2 |
| 14 | Alleviative effects of resveratrol on nonalcoholic fatty liver disease are associated with up regulation of hepatic low density lipoprotein receptor and scavenger receptor class B type I gene expressions in rats显示文摘 | Peng Xin Hao Han Danhong Gao Wei Cui Xuefeng Yang Chenjiang Ying Xiufa Sun Liping Hao | 2013 | Food and Chemical Toxicology2013，，： | 2 |
| 15 | A Textural and Mineralogical Study of the Shanzhuang Banded Iron Formation, Southeastern Margin of the North China Craton: Implications for the Overprint History of Hydrothermal Alteration and Supergenesis after Mineralization显示文摘The newly discovered Shanzhuang BIF is hosted in the Shancaoyu Formation of the Taishan Group within the Eastern Block,southeastern margin of the North China Craton.The ores can be subdivided into three types in terms of mineral assemblages,corresponding to three types(Ⅰ,Ⅱ,Ⅲ).The element concentration of the type Ⅰ magnetite is similar to that of the type Ⅱ magnetite,while the type Ⅲ magnetite is similar to that of the schist.In general,magnetite and hemat ite grains from the ores show high concentrations of Mn(1317,1162 ppm),Co(787,1023 ppm),Al(2224,2435 ppm)and Ti(540,300 ppm),Whereas magnetite is depleted in Si(420 ppm)and hematite enriched in Si(1690 ppm).Detailed petrographic and mineral chemical analysis of magnetite,hematite,amphibole/hornblende and pyroxene,reveals that almost all the minerals occur as subhedral-anhedral grains with pits and fractures,and the BIF is recrystallized to metamorphic assemblages of high amphibolite facies.Hornblende is highly enriched in Fe,Mg and Ca,but depleted in K and Na,mostly belonging to magnesiohornblende.In addition,the ratios of Mg/(Mg+Fe^2+),Fe^3+/(Fe^3++Fe^2+),Si/(Si+Ti+Al)and Al/Si are 0.48-0.64,0.17-0.36,0.79-0.88 and 0.14-0.27,respectively.It is suggested that hornblende is neither a typical magmatic origin nor a typical metamorphic.Pyroxene has the characteristics of high Ca and Fe,but low Ti and Al,with end-member components En,Wo and Fs in the ranges of 25.22-28.64 wt%,43.71-46.40 wt%and 24.51-27.62 wt%,respectively,belonging to clinopyroxene,and mostly diopside,might be formed during the prograde metamorphism in the absence of H2 O.The carbonate such as dolomite-ankerite series is probably a precursor mineral of the BIF deposit.Mass mineral chemical and structural characteristics indicate that the Shanzhuang iron deposit has been subjected to varying degrees of oxidized hydrothermal superimposed reformation,metamorphism,and supergenesis after mineralization,during which some elements have been migrated in some degree. | ZHANG Yan YU Xuefeng PENG Qiming LI Dapeng LI Xiaowei SHEN Kun ZHANG Shangkun SHANWei | 2020 | Acta Geologica Sinica(English Edition)2020，94，6： | 1 |
| 16 | Lazy learner text categorization algorithm based on embedded feature selection显示文摘To avoid the curse of dimensionality,text categorization(TC)algorithms based on machine learning (ML)have to use an feature selection(FS)method to reduce the dimensionality of feature space.Although having been widely used,FS process will generally cause information losing and then have much side-effect on the whole performance of TC algorithms.On the basis of the sparsity characteristic of text vectors,a new TC algorithm based on lazy feature selection(LFS)is presented.As a new type of embedded feature selection approach,the LFS method can greatly reduce the dimension of features without any information losing,which can improve both efficiency and performance of algorithms greatly.The experiments show the new algorithm can simultaneously achieve much higher both performance and efficiency than some of other classical TC algorithms. | Yan Peng Zheng Xuefeng Zhu Jianyong Xiao Yunhong | 2009 | Journal of Systems Engineering and Electronics2009，20，3： | 1 |
| 17 | Structural insights into the catalytic mechanism of aldehyde-deformylating oxygenases显示文摘在 cyanobacteria 发现的丰满的 alk (a/e ) ne 生合成小径为 biofuel 生产作为一条有希望的其他的途径在最近的年里获得了巨大的注意。Cyanobacterial aldehyde-deformylating oxygenase (cADO ) 催化 C 的变换,潜水艇 class= “ a-plus-plus ” > n 丰满的醛到它的相应 C < 潜水艇 class= “ a-plus-plus ” > n-1 alk (a/e ) ne,是在那条小径的关键酶。由于它的低活动,由 cADO 的 alk (a/e ) ne 生产是一个低效的过程。cADO 的以前的生物化学、结构的调查在它的催化反应上提供了一些信息。然而,它的催化过程的细节仍然保持不清楚。这里,我们从 Synechococcus 报导 cADO 的五水晶结构伸长在两种它的没有铁、包铁的形式的紧张 PCC7942,在它的催化过程期间代表不同状态。结构的比较和功能的酶试金显示那 Glu144,协调铁的残余之一,在 cADO 的催化反应起一个重要作用。而且, Glu144 住的螺旋展出在 cADO 结构与 di 铁中心的不同有约束力的状态相关的二不同符合构造。因此,我们的结果为 cADO di 铁中心的高度易变的特征提供结构的解释,我们建议它与它的低酶的活动有关。根据我们的结构、生物化学的数据, cADO 的一个可能的催化过程被建议,它能与改进活动帮助 cADO 的设计。 | Cheniun Jia Mei Li Jianjun Li Jingjing Zhang Hongmei Zhang Peng Cao Xiaowei Pan Xuefeng LU Wenrui Chang | 2015 | Protein & Cell2015，6，1： | 1 |
| 18 | High tem- perature sensitivity of manganese-assisted excitonic photolumi- nescence from inverted core/shell ZnSe:Mn/CdSe nanocrys- tals 显示文摘 | Yu Xuefeng Peng Xiaoniu Chen Zhenqian | 2010 | Applied Physics Letters2010，96，12： | 1 |
| 19 | Adjacent acid sites cooperatively catalyze fructose to 5-hydroxymethylfurfural in a new, facile pathway显示文摘To study the effect of adjacent hydroxyl to the active sites, several acid catalysts, i.e. substituted benzoic acids with adjacent carboxyl are employed in the fructose dehydration to 5-hydroxymethylfurfural(HMF).Experimental results reveal that Br?nsted acid sites with adjacent carboxyl present higher catalytic ability than isolated ones. Computational results suggest that the adjacent sites lead to co-interaction on fructose, corresponding more stable transition state and faster HMF formation rate. Based on the enhancement from the adjacent sites, a novel ordered mesoporous carbon(OMC) full of carboxyls in surface is prepared and turns out to be an effective solid catalyst for HMF production from fructose derived from biomass. | Xia Yu Yueying Chu Lei Zhang Hui Shi Mingjiang Xie Luming Peng Xuefeng Guo Wei Li Nianhua Xue Weiping Ding | 2020 | Journal of Energy Chemistry2020，29，8： | 1 |
| 20 | Nest-type NCM ■ Pt/C with oxygen capture character as advanced electrocatalyst for oxygen reduction reaction显示文摘A unique nest-type catalyst has been designed with a nest of oxygen capture surrounding catalytic Pt centers, which shows much promoted performance, on the base of Pt/C catalyst, for oxygen reduction reaction(ORR). The nest is constructed with nitrogen-doped carbon matrix(NCM), derived from the controlled carbonization of PANI precursor, to cover Pt/C catalyst. The unique structure of the catalyst(denoted as NCM■ Pt/C) has many merits. Firstly, it can capture oxygen both in air and in acidic electrolyte. Compared with naked Pt/C, it is found that, in air, the oxygen concentration within the porous nest of NCM surrounding Pt/C particles is ~13 times higher than atmospheric oxygen concentration and, in acidic electrolyte, the concentration of activated oxygen over the catalyst NCM■ Pt/C rise to~1.9 times. Secondly, the NCM nest offers a special electronic modulation on Pt centers toward modified ORR kinetics and then catalytic performances. With these merits, compared with Pt/C, the NCM■ Pt/C catalyst shows 3.2 times higher turnover frequency value and 2.9 times enhanced specific activity for ORR with half-wave potential at 0.894 V. After 50,000 sweeping cycles, the NCM■ Pt/C catalyst retains~66% mass activity and still has advantages over the fresh Pt/C catalyst. We envision that the nest-type catalyst provides a new idea for progress of practical Pt/C ORR catalyst. | Teng Chen Yida Xu Deming Meng Xuefeng Guo Yan Zhu Luming Peng Jianqiang Hu Weiping Ding | 2022 | Journal of Energy Chemistry2022，31，8： | 1 |
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