维普中文期刊产品整合服务
162篇 您的检索式:作者名="YongPeng"
    题名 作者 年代 出处 被引量
1In situ synthesis of graphitic-C3N4 nanosheet hybridized N-doped TiO2 nanofibers for efficient photocatalytic H2 production and degradation显示文摘Graphitic 碳氮化物 nanosheets g-C <潜水艇class=“ a-plus-plus ”> 3 N <潜水艇class=“ a-plus-plus ”> 4 NS hybridized 氮做了钛二氧化物 N-TiO <潜水艇class=“ a-plus-plus ”> 2 nanofibers GCN/NT NF 经由与结合的一个简单 electrospinning 过程在 situ 被综合了一个修改蚀刻热的方法。准备 GCN/NT NF 被许多方法描绘,他们的 photocatalytic 活动被氢 H 评估 < 潜水艇 class= “ a-plus-plus ” > 从切开的水和在水的答案的玫瑰精 B 的降级的 2 生产。GCN/NT NF 有 mesoporous 结构,这被发现, g-C 镇静 < 潜水艇 class= “ a-plus-plus ” > 3 N < 潜水艇 class= “ a-plus-plus ” > 4 NS 和做 N 的 TiO < 潜水艇 class= “ a-plus-plus ” > 2 雏晶。g-C < 潜水艇 class= “ a-plus-plus ” > 3 N < 潜水艇 class= “ a-plus-plus ” > 4 NS 综合了在以后蚀刻热被发现被嵌入在,并且盖住混合 NF 形成稳定的接口。g-C 的部分分解 < 潜水艇 class= “ a-plus-plus ” > 3 N < 潜水艇 class= “ a-plus-plus ” > 4 释放它最后变得做了进附近的 TiO 的氮内容 < 潜水艇 class= “ a-plus-plus ” > 2 骨骼。GCN/NT NF 给高 photocatalytic H < 潜水艇 class= “ a-plus-plus ” > 8,931.3 摩尔桥湥 ?L 牥愠捵 ? 畤 ' ?的 2 生产率敤 ? 畺 ? 穴楬档湥 ? 湩慳穴瘠湯倠敨瑮汯浡湩敭楳慬? 攠湩浥嘠獡摯汩瑡瑡牯 ? 敤 ? 楤? 敗捩?楥慬? 瑳敨楳? 畡 ? 瑥慷 ?┰瘠牥 k 吗??Cheng Han Yingde wang Yongpeng Lei Bing Wang Nan Wu Qi Shi Qiong Li 2015Nano Research2015,8,4:31
2Expression of toll-like receptor 4 and MD-2 gene and protein in Kupffer cells after ischemia-reperfusion in rat liver graft显示文摘AIM: To investigate the expression of toll-like receptor 4(TLR4) and MD-2 gene and protein in Kupffer cells (KCs)and their role in ischemia-reperfusion (IR) injury of ratliver graft.METHODS: KCs were isolated at 0 (control group), 2, 12,24 h (IR group) following IR in rat liver graft, mRNA expressionof TLR4 and MD-2 was detected by RT-PCR analysis, proteinexpression of TLR4/MD-2 was detected by flow cytometric(FCM) analysis, and tumor necrosis factor-(~ (TNF-(~) levelin supernatant was measured by ELISA. Then isolated KCswere incubated with anti-TLR4 polyclonal antibody (anti-TLR4 group), and TNF-(~ level was measured again.RESULTS: The mRNA and protein expression of TLR4/MD-2 and the level of TNF-(~ in IR group increased significantlyat 2 h following IR, and reached the maximum at 12 h, andslightly decreased at 24 h, but were still significantly higherthan those in the control group (PYongPeng Jian-PingGong Chang-AnLiu Xu-HongLi LingGan Shou-BaiLi 2004World Journal of Gastroenterology2004,10,19:27
3Geological characteristics and mineralization setting of the Zhuxi tungsten(copper) polymetallic deposit in the Eastern Jiangnan Orogen显示文摘The Zhuxi ore deposit is a super-large scheelite(copper) polymetallic deposit discovered in recent years. It grew above copper/tungsten-rich Neoproterozoic argilloarenaceous basement rocks and was formed in the contact zone between Yanshanian granites and Carboniferous-Permian limestone. Granites related to this mineralization mainly include equigranular, middle- to coarse-grained granites and granitic porphyries. There are two mineralization types: skarn scheelite(copper) and granite scheelite mineralization. The former is large scale and has a high content of scheelite, whereas the latter is small scale and has a low content of scheelite. In the Taqian-Fuchun Basin, its NW boundary is a thrust fault, and the SE boundary is an angular unconformity with Proterozoic basement. In Carboniferous-Permian rock assemblages, the tungsten and copper contents in the limestone are both very high. The contents of major elements in granitoids do not differ largely between the periphery and the inside of the Zhuxi ore deposit. In both areas, the values of the aluminum saturation index are A/CNK>1.1, and the rocks are classified as potassium-rich strongly peraluminous granites. In terms of trace elements, compared to granites on the periphery of the Zhuxi ore deposit, the granites inside the Zhuxi ore deposit have smaller d Eu values, exhibit a significantly more negative Eu anomaly, are richer in Rb, U, Ta, Pb and Hf, and are more depleted in Ba, Ce, Sr, La and Ti, which indicates that they are highly differentiated S-type granites with a high degree of evolution. Under the influence of fluids, mineralization of sulfides is evident within massive rock formations inside the Zhuxi ore deposit, and the mean SO_3 content is 0.2%. Compared to peripheral rocks, the d Eu and total rare earth element(REE) content of granites inside the Zhuxi ore deposit are both lower, indicating a certain evolutionary inheritance relationship between the granites on the periphery and the granites inside the Zhuxi ore deposit. For peripheral and ore district plutons, U-Pb zircon dating shows an age range of 152–148 Ma. In situ Lu-Hf isotope analysis of zircon in the granites reveals that the calculated e_(Hf)(t) values are all negative, and the majority range from -6 to -9. The T_(DM2) values are concentrated in the range of 1.50–1.88 Ga(peak at 1.75 Ga), suggesting that the granitic magmas are derived from partial melting of ancient crust. This paper also discusses the metallogenic conditions and ore-controlling conditions of the ore district from the perspectives of mineral contents, hydrothermal alteration, and ore-controlling structures in the strata and the ore-bearing rocks. It is proposed that the Zhuxi ore deposit went through a multistage evolution, including oblique intrusion of granitic magmas, skarn mineralization, cooling and alteration, and precipitation of metal sulfides. The mineralization pattern can be summarized as 'copper in the east and tungsten in the west, copper at shallow-middle depths and tungsten at deep depths, tungsten in the early stage and copper in the late stage'.CHEN GuoHua SHU LiangShu SHU LiMin ZHANG Cheng OUYANG YongPeng 2016Science China Earth Sciences2016,59,4:25
4Synthesis of endotoxin receptor CD14 protein in Kupffer cells and its role in alcohol-induced liver disease显示文摘AIM: To observe the synthesis of endotoxin receptor CD14 protein and its mRNA expression in Kupffer cells (KCs), and evaluate the role of CD14 in the pathogenesis of liver injury in rats with alcohol-induced liver disease (ALD).METHODS: Twenty-eight Wistar rats were divided into two groups: ethanol-fed group and control group. Ethanol-fed group dextrose instead of ethanol. Two groups were sacrificed at 4 wk and 8 wk, respectively. KCs were isolated and the synthesis of CD14 protein and its mRNA expression in KCs were determined by flow cytometric analysis (FCM)or the reverse transcription polymerase chain reaction (RTPCR) analysis. The levels of plasma endotoxin and alanine transaminase (ALT) were measured by Limulus Amebocyte Lysate assay and standard enzymatic procedures respectively, and the levels of plasma tumor necosis factor (TNF)-α and interleukin (IL)-6 were both determined by ELISA. The liver pathology change was observed under light and electric microscopy.RESULTS: In ethanol-fed group, the percentages of FITCCD14 positive cells were 76.23 % and 89.42 % at 4 wk and 8 wk, respectively. Compared with control group (4.45 %and 5.38 %), the difference was significant (P<0.05). The expressions of CD14 mRNA were 7.56±1.02 and 8.74±1.37 at 4 wk and 8 wk, respectively, which were significantly higher compared with the control group (1.77±0.21 and 1.98±0.23)(P<0.05). Plasma endotoxin levels at 4 wk and 8 wk increased dramatically in ethanol-fed rats (112±15 IU/L and 147±22 IU/L) than those in the control animals (31±12 IU/L and 33±9 IU/L) (P<0.05). In ethanol-fed rats, the levels of wk, respectively which were significantly higher than those fed rats, there were marked pathological changes including steatosis, cell infiltration and necrosis. No marked pathological changes were seen in control group.CONCLUSION: Ethanol administration led to a significantsynthesis of endotoxin receptor CD14 protein and its gene expression in KCs, which maybe result in the pathological changes of liver tissue and hepatic functional damages.Li-LiDai Jian-PingGong Guo-QingZuo Chuan-XinWu Yu-JunShi Xu-HongLi YongPeng WuDeng Sheng-WeiLi chang-AnLiu 2003World Journal of Gastroenterology2003,9,3:20
5N-doped graphene grown on silk cocoon-derived interconnected carbon fibers for oxygen reduction reaction and photocatalytic hydrogen production显示文摘基于碳的没有金属的催化剂是为在氧减小反应使用的稀罕、昂贵的铂(磅) 的一个有希望的代用品。我们此处报导精致地集成于高度传导性的框架,同时提供的更活跃的地点和更高的电导率的做 N 的 graphene (NG ) 。NG 在在从丝绸茧导出的碳纤维上种的 situ (SCC 用一出简单一步舞的 f ) 热处理。产生产品(NG-SCC 拥有 meso-/macroporous 结构与的 f ), 三维(3D ) 互连网络,展出仅仅是比 Pt/C 和表演稳定性和甲醇忍耐上级的否定的 0.1 V 更少到在碱的媒介的 Pt/C 的那些的一个发作潜力。而且,当是的磅不在时合作催化剂, NG-SCC f 显示出 66.0 摩尔的 photocatalytic H 2 生产率这个模式的完全音韵学上的分析:任意的关系在之间不合法并且合法交互被编码为词典,但是在完全一样的词汇入口(而不是二) 在不合法的条款被联系到成分和营救的地方,分割漂流。什么时候常规(联系) 片断在给定的音韵学上的上下文是不合法的,它 delinks 和漂浮的代用品属于搬出的位置。作为后果,嘴巧的格能被做到词法计算从来不花进 acc 的结束吗??Yongpeng Lei Qi Shi Cheng Han Bing Wang Nan Wu Hong Wang Yingde Wang 2016Nano Research2016,9,8:14
6N-doped defective carbon with trace Co for efficient rechargeable liquid electrolyte-/all-solid-state Zn-air batteries显示文摘Simple synthesis of multifunctional electrocatalysts with plentiful active sites from earth-abundant materials is especially fascinating. Here, N-doped defective carbon with trace Co(1.5 wt%) was prepared via a scalable one pot solid pyrolysis process. The sample exhibits efficient bifunctional OER/ORR activity in alkaline, mainly ascribed to the unique micro-mesoporous structure(1–3 nm), high population of graphitic-N doping(up to 49.0%), abundant defects and the encapsulated Co nanoparticles with graphitized carbon. The according rechargeable liquid Zn-air batteries showed excellent performance(maximum power density of 154.0 mW cm^(-2); energy density of 773 Wh kg^(-1) at 5 mA cm^(-2) and charging-discharging cycling stability over 100 cycles). As a proof-of-concept, the flexible, rechargeable all-solid-state Zn-air batteries were constructed, and displayed a maximum power density as high as 45.9 mW cm^(-2), among the top level of those reported previously.Zhiyan Chen Qichen Wang Xiaobin Zhang Yongpeng Lei Wei Hu Yao Luo Yaobing Wang 2018Science Bulletin2018,63,9:14
7BZR1 Family Transcription Factors Function Redundantly and Indispensably in BR Signaling but Exhibit BRI1-Independent Function in Regulating Anther Development in Arabidopsis显示文摘BRASSINAZOLE-RESISTANT 1 family proteins(BZRs)are central transcription factors that govern brassinosteroid(BR)-regulated gene expression and plant growth.However,it is unclear whether there exists a BZR-independent pathway that mediates BR signaling.In this study,we found that disruption of all BZRs in Arabidopsis generated a hextuple mutant(bzr-h)displaying vegetative growth phenotypes that were almost identical to those of the null mutant of three BR receptors,bri1brl1brl3(bri-t).By RNA sequencing,we found that global gene expression in bzr-h was unaffected by 2 h of BR treatment.The anthers of bzr-h plants were loculeless,but a similar phenotype was not observed in bri-t,suggesting that BZRs have a BR signaling-independent regulatory role in anther development.By real-time PCR and in situ hybridization,we found that the expression of SPOROCYTELESS(SPL),which encodes a transcription factor essential for anther locule development,was barely detectable in bzr-h,suggesting that BZRs regulate locule development by affecting SPL expression.Our findings reveal that BZRs are indispensable transcription factors required for both BR signaling and anther locule development,providing new insight into the molecular mechanisms underlying the microsporogenesis in Arabidopsis.Lian-Ge Chen Zhihua Gao Zhiying Zhao Xinye Liu Yongpeng Li Yuxiang Zhang Xigang Liu Yu Sun Wenqiang Tang 2019Molecular Plant2019,12,10:11
8Role of NF-kB in multiple organ dysfunction during acute obstructive cholangitis显示文摘To elucidate the role of NF-kB activation in the development of multiple organ dysfunction (MOD) during acute obstructive cholangitis (AOC) in rats.BinTu Jian-PingGong Hu-YiFeng Chuan-XinWu Yu-JunShi Xu-HongLi YongPeng Chang-AnLiu Sheng-WeiLi 2003World Journal of Gastroenterology2003,9,1:10
9Performance Evaluation for Medium Voltage MIMO-OFDM Power Line Communication System显示文摘Power line communication(PLC)provides intelligent electrical functions such as power quality measurement,fault surveys,and remote control of electrical network.Most of research works have been done in low voltage(LV)scenario due to the fast development of in-home PLC.The aim of this paper is to evaluate the link-level performance of a medium voltage(MV)MIMO-OFDM communication system based on transmission link under underground power line channel.The MIMO channel is modeled as a modified multipath model in the presence of impulsive noise and background noise.We first perform a measurement on the practical MV MIMO channel parameters for a section of buried cable of 1 km long in Ganzhou city,Jiangxi province,China.Based on the measured channel,we design the frame structure based on an IEEE standard for broadband over power line networks[1]to support MV MIMO-OFDM transmission.According to designed frame structure,we design an encoder and a decoder for a dual binary tail-biting turbo code and optimize some key decoder parameters for low bit error rate performance.Finally,the link-level performance for both spatial multiplexing and spatial diversity are evaluated.Numeral results show that MV MIMO-OFDM is a promising approach to provide both high data rate and link reliability for PLC.Yingxue Li Min Zhang Wenguang Zhu Mengyuan Cheng Cheng Zhou Yongpeng Wu 2020China Communications2020,17,1:10
10Protective effect of nitric oxide induced by ischemic preconditioning on reperfusion injury of rat liver graft显示文摘AIM: Ischemic preconditioning (IP) is a brief ischemic episode,which confers a state of protection against the subsequent long-term ischemia-reperfusion injuries. However, little is known regarding the use of IP before the sustained cold storage and liver transplantation. The present study was designed to evaluate the protective effect of IP on the long-term preservation of liver graft and the prolonged anhepatic-phase injury.METHODS: Male Sprague-Dawley rats were used as donors and recipients of orthotopic liver transplantation. All livers underwent 10 min of ischemia followed by 10 min of reperfusion before harvest. Rat liver transplantation was performed with the portal vein clamped for 25 min. Tolerance of transplanted liver to the reperfusion injury and liver damage were investigated. The changes in adenosine concentration in hepatic tissue and those of nitric oxide (NO) and tumor necrosis factor (TNF) in serum were also assessed.RESULTS: Recipients with IP significantly improved their one-week survival rate and liver function, they had increased levels of circulating NO and hepatic adenosine, and a reduced level of serum TNF, as compared to controls. Histological changes indicating hepatic injuries appeared improved in the IP group compared with those in control group. The protective effect of IP was also obtained by administration of adenosine,while blockage of the NO pathway using Nco-nitro-L-arginine methyl ester abolished the protective effect of IP.CONCLUSION: IP appears to have a protective effect on the long-term preservation of liver graft and the prolonged anhepatic-phase injuries. NO may be involved in this process.Jian-PingGong BingTu WeiWang YongPeng Shou-BaiLi Lu-NanYan 2004World Journal of Gastroenterology2004,10,1:10
11Three-dimensional (3D) interconnected networks fabricated via in-situ growth of N-doped graphene/ carbon nanotubes on Co-containing carbon nanofibers for enhanced oxygen reduction显示文摘把高度传导性的框架与丰富的活跃地点相结合的策略在到为氧减小反应(ORR ) 的商业 Pt/C 的其他的催化剂的准备是合乎需要的。在这研究,做 N 的 graphene (NG ) 和碳 nanotubes (CNT ) 在共同包含上在原处被种碳 nanofibers (CNF ) 到表格三维(3D ) 互连网络。NG 和 CNT 一起绑了交叉 CNF,便于电子转移并且提供另外的活跃地点。3D 互连纤维网络有 0.924 V 的一个发作潜力的展出优秀 ORR 催化行为(对可逆的氢电极) 并且更高当前的密度比在 0.720 V 以外的 Pt/C。另外,混合系统在碱的媒介展出了优异稳定性和甲醇忍耐到 Pt/C。这个方法能被扩大到另外的 3D 的设计为精力的互连的网络体系结构存储和变换应用程序。Qi Shi Yingde Wang Zhongmin Wang Yongpeng Lei Bing Wang Nan Wu Cheng Han Song xieJ Yanzi Gou 2016Nano Research2016,9,2:9
12Mesoporous silicon carbide nanofibers with in situ embedded carbon for co-catalyst free photocatalytic hydrogen production显示文摘硅碳化物(原文如此) 由于它的唯一的 photoelectrical 性质和热 / 化学的稳定性被认为有希望的没有金属的光催化剂。然而,它的表演受不了费用搬运人的快再结合。此处,我们原文如此报导 mesoporous nanofibers 与在 situ 嵌入 graphitic 碳(原文如此 NFs-Cx ) 经由在 electrospun 碳 nanofibers 和 Si 粉末之间的一步舞 carbothermal 减小综合了。当高贵金属合作催化剂不在时,氢进化效率原文如此, NFs-Cx 显著地在两个都模仿的太阳的光下面被改进(180.2 摩尔 ? 慬敳 ?Bing Wang Yingde Wang Yongpeng Lei Nan Wu Yanzi Gou Cheng Han Song Xie Dong Fang 2016Nano Research2016,9,3:8
13Evaluation of drinking water treatment combined filter backwash water recycling technology based on comet and micronucleus assay显示文摘Based on the fact that recycling of combined filter backwash water(CFBW)directly to drinking water treatment plants(WTP)is considered to be a feasible method to enhance pollutant removal efficiency,we were motivated to evaluate the genotoxicity of water samples from two pilot-scale drinking water treatment systems,one with recycling of combined backwash water,the other one with a conventional process.An integrated approach of the comet and micronucleus(MN)assays was used with zebrafish(Danio rerio)to investigate the water genotoxicity in this study.The total organic carbon(TOC),dissolved organic carbon(DOC),and trihalomethane formation potential(THMFP),of the recycling process were lower than that of the conventional process.All the results showed that there was no statistically significant difference(P>0.05)between the conventional and recycling processes,and indicated that the genotoxicity of water samples from the recycling process did not accumulate in 15 day continuous recycling trial.It was worth noting that there was correlation between the concentrations of TOC,DOC,UV_(254),and THMFPs in water and the DNA damage score,with corresponding R^2 values of 0.68,0.63,0.28,and 0.64.Nevertheless,both DNA strand breaks and MN frequency of all water samples after disinfection were higher than that of water samples from the two treatment units,which meant that the disinfection by-products(DBPs)formed by disinfection could increase the DNA damage.Both the comet and MN tests suggest that the recycling process did not increase the genotoxicity risk,compared to the traditional process.Ting Chen Yongpeng Xu Zhiquan Liu Shijun Zhu Wenxin Shi Fuyi Cui 2016Journal of Environmental Sciences2016,28,4:8
14Hierarchical Ag-SiO_2@Fe_3O_4magnetic composites for elemental mercury removal from non-ferrous metal smelting flue gas显示文摘Hierarchical Ag-SiO_2@Fe_3O_4 magnetic composites were selected for elemental mercury(Hg^0) removal from non-ferrous metal smelting flue gas in this study. Results showed that the hierarchical Ag-SiO_2@Fe_3O_4 magnetic composites had favorable Hg^0 removal ability at low temperature. Moreover, the adsorption capacity of hierarchical magnetic composite is much larger than that of pure Fe_3O_4 and SiO_2@Fe_3O_4. The Hg^0 removal efficiency reached the highest value as approximately 92% under the reaction temperature of 150°C, while the removal efficiency sharply reduced in the absence of O_2. The characterization results indicated that Ag nanoparticles grew on the surface of SiO_2@Fe_3O_4 support. The large surface area of SiO_2 supplied efficient reaction room for Hg and Ag atoms. Ag–Hg amalgam is generated on the surface of the composites. In addition, this magnetic material could be easily separated from fly ashes when adopted for treating real flue gas, and the spent materials could be regenerated using a simple thermal-desorption method.Yongpeng Ma Bailong Mu Xiaojing Zhang Hongzhong Zhang Haomiao Xu Zan Qu Li Gao 2019Journal of Environmental Sciences2019,31,5:7
15NiCoP nanoleaves array for electrocatalytic alkaline H2 evolution and overall water splitting显示文摘The development of non-precious, high-efficient and durable electrocatalysts for H2 evolution in alkaline media is highly desirable. Herein we report NiCoP nanoleaves array vertically grown on Ni foam for H2 evolution and overall water splitting via simple hydrothermal treatment and phosphorization. The selfsupported NiCoP nanoleaves architecture contributes to more exposed active sites, the smaller contact resistance between catalyst and substrate, faster ion diffusion and electron transfer. As a result, the optimized electrode requires only overpotentials of 98 and 173 mV to achieve current densities of 10 and100 m A cm-2 in 1.0 M KOH,respectively. Besides, used as both anode and cathode simultaneously, the electrode delivers current densities of 100 and 200 m A cm-2 at cell voltages of only 1.8 and 1.87 V, respectively. Moreover, the relatively high efficiency of about 11.4% for solar-driven water splitting further illustrates the application of our catalyst to sustainable development based on green technologies.Lei Chen Yaohao Song Yi Liu Liang Xu Jiaqian Qin Yongpeng Lei Yougen Tang 2020Journal of Energy Chemistry2020,29,11:6
16Extremely high-rate aqueous supercapacitor fabricated using doped carbon nanoflakes with large surface area and mesopores at near-commercial mass loading显示文摘在基于所有碳电极并且在良性的水的媒介操作而不是常规器官的电解质的 supercapacitor 完成令人满意的精力力量联合是主要挑战。为这个目的,我们制作了碳 nanoflakes (在厚度的 20-100 nm,在宽度的 5-m ) 包含一个大表面区域的无匹的联合(3,000 m 2sible 光活动被发现是 29.23 和 58.82 摩尔 ?? 挠潲獳氭湩敫 ? 牧灡敨敮 ??????  ?? 吗??Nan Mao Huanlei Wang Yang Sui Yongpeng Cui Jesse Pokrzywinski Jing Shi Wei Liu Shougang Chen Xin Wang David Mitlin 2017Nano Research2017,10,5:5
17Structural Engineering of Hierarchical Aerogels Comprised of Multi-dimensional Gradient Carbon Nanoarchitectures for Highly Efficient Microwave Absorption显示文摘Recently,multilevel structural carbon aerogels are deemed as attractive candidates for microwave absorbing materials.Nevertheless,excessive stack and agglomeration for low-dimension carbon nanomaterials inducing impedance mismatch are significant challenges.Herein,the delicate“3D helix-2D sheet-1D fiber-0D dot”hierarchical aerogels have been successfully synthesized,for the first time,by sequential processes of hydrothermal self-assembly and in-situ chemical vapor deposition method.Particularly,the graphene sheets are uniformly intercalated by 3D helical carbon nanocoils,which give a feasible solution to the mentioned problem and endows the as-obtained aerogel with abundant porous structures and better dielectric properties.Moreover,by adjusting the content of 0D core-shell structured particles and the parameters for growth of the 1D carbon nanofibers,tunable electromagnetic properties and excellent impedance matching are achieved,which plays a vital role in the microwave absorption performance.As expected,the optimized aerogels harvest excellent performance,including broad effective bandwidth and strong reflection loss at low filling ratio and thin thickness.This work gives valuable guidance and inspiration for the design of hierarchical materials comprised of dimensional gradient structures,which holds great application potential for electromagnetic wave attenuation.Yongpeng Zhao Xueqing Zuo Yuan Guo Hui Huang Hao Zhang Ting Wang Ningxuan Wen Huan Chen Tianze Cong Javid Muhammad Xuan Yang Xinnan Wang Zeng Fan Lujun Pan 2021Nano-Micro Letters2021,13,9:5
18Bibliometric analysis and system review of vehicle routing optimization for emergency material distribution显示文摘Determining the optimal vehicle routing of emergency material distribution(VREMD)is one of the core issues of emergency management,which is strategically important to improve the effectiveness of emergency response and thus reduce the negative impact of large-scale emergency events.To summarize the latest research progress,we collected 511VREMD-related articles published from 2010 to the present from the Scopus database and conducted a bibliometric analysis using VOSviewer software.Subsequently,we cautiously selected 49 articles from these publications for system review;sorted out the latest research progress in model construction and solution algorithms;and summarized the evolution trend of keywords,research gaps,and future works.The results show that domestic scholars and research organizations held an unqualified advantage regarding the number of published papers.However,these organizations with the most publications performed poorly regarding the number of literature citations.China and the US have contributed the vast majority of the literature,and there are close collaborations between researchers from both countries.The optimization model of VREMD can be divided into single-,multi-,and joint-objective models.The shortest travel time is the most common optimization objective in the single-objective optimization model.Several scholars focus on multiobjective optimization models to consider conflicting objectives simultaneously.In recent literature,scholars have focused on the impact of uncertainty and special events(e.g.,COVID-19)on VREMD.Moreover,some scholars focus on joint optimization models to optimize vehicle routes and central locations(or material allocation)simultaneously.Solution algorithms can be divided into two primary categories,i.e.,mathematical planning methods and intelligent evolutionary algorithms.The branch and bound algorithm is the most dominant mathematical planning algorithm,while genetic algorithms and their enhancements are the most commonly used intelligent evolutionary algorithms.It is shown that the nondominated sorting genetic algorithmⅡ(NSGA-Ⅱ)can effectively solve the multiobjective model of VREMD.To further improve the algorithm’s performance,researchers have proposed improved hybrid intelligent algorithms that combine the advantages of NSGA-Ⅱand certain other algorithms.Scholars have also proposed a series of optimization algorithms for specific scenarios.With the development of new technologies and computation methods,it will be exciting to construct optimization models that consider uncertainty,heterogeneity,and temporality for large-scale real-world issues and develop generalized solution approaches rather than those applicable to specific scenarios.Jinxing Shen Kun Liu Changxi Ma Yongpeng Zhao Chuwei Shi 2022Journal of Traffic and Transportation Engineering(English Edition)2022,9,6:5
19Facile synthesis of FeCo@NC core-shell nanospheres supported on graphene as an efficient bifunctional oxygen electrocatalyst显示文摘氧的 Electrocatalytic 变换为干净精力技术保持大潜力,包括水电解,再生燃料房间,和可充电的金属空气电池。高度有效、便宜的氧 electrocatalysts 的发展以后为大规模实际申请作为为宝贵基于金属的催化剂的代替是极其重要的。基于 FeCo nanoparticles/N-doped 碳核心壳,范围在做 N 的 graphene 表上支持了的 bifunctional 氧 electrocatalyst 经由 graphitic 碳氮化物和 acetylacetonates 的一步舞热分解被准备。优化产品展出了 0.87 V 和优秀耐久性的一项氧电极活动。显著表演主要被归因于从 FeCo nanoparticles 和做 N 的碳壳产生的合作效果。这研究介绍一个便宜、简单的方法开发高度活跃的 bifunctional 氧 electrocatalysts。Nan Wu Yongpeng Lei Qichen Wang Bing Wang Cheng Han Yingde Wang 2017Nano Research2017,10,7:5
20Comparative population genetic analyses suggest hybrid origin of Rhododendron pubicostatum,an endangered plant species with extremely small populations endemic to Yunnan,China显示文摘Gene flow between sympatric congeneric plants is thought to be very common and may pose serious threats to endangered species.In the present study,we evaluate the genetic diversity and divergence of three sympatric Rhododendron species in Jiaozi Mountain using newly developed microsatellites through the Illumina MiSeq sequencing approach.Genetic diversity of all three Rhododendron species studied was moderate in comparison to genetic parameters previously reported from species of this genus.Interestingly,genetic structure analysis of the three species identified a possible hybrid origin of the threatened Rh.pubicostatum.This sympatry should be considered a unimodal hybrid zone,since Rh.pubicostatum is predominant here.Unimodal hybrid zones are uncommon in Rhododendron,despite the fact that hybridization frequently occurs in the genus.Issues pertaining to the conservation of Rh.pubicostatum resulting from admixture of genetic material from its parental species are discussed.Xuemei Zhang Hantao Qin Weijia Xie Yongpeng Ma Weibang Sun 2020Plant Diversity2020,42,4:4
返回顶部 每页显示:
共9页 首页 上一页 第1页 下一页 末页 /9 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费