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44篇 您的检索式:作者名="LI Pingli"
    题名 作者 年代 出处 被引量
1Overexpression of the tonoplast aquaporin AtTIP5;1 conferred tolerance to boron toxicity in Arabidopsis显示文摘Boron (B) toxicity to plants is responsible for low crop productivity in many regions of the world. Here we report a novel and effective means to alleviate the B toxicity to plants under high B circumstance. Functional characterization of AtTIP5;1, an aquaporin gene, re-vealed that overexpression of AtTIP5;1 (OxAtTIP5;1) in Arabidopsis significantly increased its tolerance to high B toxicity. Compared to wild-type plants, OxAtTIP5;1 plants exhibited longer hypocotyls, accelerated development, increased silique production under high B treatments. GUS staining and quantitative RT-PCR (qRT-PCR) results demonstrated that the expression of AtTIP5;1 was induced by high B concentration treatment. Subcellular localization analysis revealed that the AtTIP5;1-GFP fusion protein was localized on the tonoplast membrane, which was consistent with the prediction based on bioinformatics. Taken together, our results suggest that AtTIP5;1 is in-volved in B transport pathway possibly via vacuolar compartmentation for B, and that overexpression of AtTIP5;1 in plants may provide an effective way to overcome the problem resulting from high B concentration toxicity.Yongqi Pang, Lijuan Li, Fei Ren, Pingli Lu, Pengcheng Wei, Jinghui Cai, Lingguo Xin, Juan Zhang, Jia Chen, Xuechen Wang State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China 2010Journal of Genetics and Genomics2010,37,6:11
2Resveratrol compares with melatonin in improving in vitro porcine oocyte maturation under heat stress显示文摘Background: Resveratrol, an important phyto-antioxidant commonly found in grapes, mulberry, and other plants,has a variety of functions including anti-aging, anti-cancer and anti-inflammatory activities. In the current study, we investigated the beneficial effects of resveratrol on in vitro porcine oocyte maturation under heat stress(HS). The effect of resveratrol, melatonin and their combination on alleviating HS was compared according to the maturation rate of oocytes and the development competence of embryos after parthenogenetic activation(PA).Results: Supplementation with resveratrol(2.0 μmol/L) not only improved the nuclear maturation but also raised the blastocyst rate of porcine embryos' PA from oocytes that underwent HS by increasing their glutathione(GSH)level, reducing reactive oxygen species(ROS) and up-regulating the expression of Sirtuin 1(SIRT1). It was also found that melatonin(10^(-7)mol/L) and the combination of resveratrol(2.0 μmol/L) plus melatonin(10^(-7)mol/L) exhibited more potent effects than resveratrol alone regarding their protective activities on oocyte maturation under HS.Conclusions: This study compared the efficiencies of resveratrol, melatonin and their combination for protecting porcine oocytes from heat stress. The mechanisms are attributed to the fact that each treatment may have different ability to regulate the synthesis of steroid hormones and the expression of mature related genes.Yu Li Jing Wang Zhenzhen Zhang Jinyun Yi Changjiu He Feng Wang Xiuzhi Tian Minghui Yang Yukun Song Pingli He Guoshi Liu 2017Journal of Animal Science and Biotechnology2017,8,1:7
3Mesozoic–Cenozoic Volcanic Cycle and Volcanic Reservoirs in East China显示文摘There are widespread Mesozoic–Cenozoic terrestrial volcanic activities in East China,and they produced favorable geologic factors for the volcanic reservoirs.To reveal the spatio-temporal evolution of regional volcanisms and their tectonic setting,we subdivide Mesozoic–Cenozoic volcanic activities into 6 volcanic cycles(Ⅰ–Ⅵ),and summarize the temporal-spatial distribution,rock association and tectonic setting of each cycle.The Cycle I forms a post-orogenic intraplate bimodal volcanic association.The cyclesⅡandⅢinclude arc volcanic associations formed in compressional and extensional subduction environments,respectively.The CycleⅣcontains a post-orogenic arc bimodal association.The CycleⅤis a basaltic association of tholeiite series under initial rift setting,and the CycleⅥis basaltic association of alkaline series under typical rift setting.The volcanic strata between each cycle are bounded by regional unconformity.The above 6 volcanic cycles correspond to 6 sequential stages of tectonic evolutions from the Early Jurassic post-orogeny,the Mid-Jurassic–Cretaceous subduction of the paleo-Pacific Plate to the Cenozoic marginal rifting.According to the geological characteristics of volcanic reservoirs in different volcanic cycles,it is put forward that the CycleⅤis the major formation period of volcanic reservoirs in East China and should be the focus of exploration,and that the volcanic reservoirs of the CycleⅣare also worthy of attention.Guangfu Xing Jianqing Li Zheng Duan Mingxuan Cao Minggang Yu Pingli Chu Rong Chen 2021Journal of Earth Science2021,32,4:7
4Transition metal oxides as hole-transporting materials in organic semiconductor and hybrid perovskite based solar cells显示文摘Organic polymer solar cells(OSCs) and organic-inorganic hybrid perovskite solar cells(PSCs) have achieved notable progress over the past several years.A central topic in these fields is exploring electronically efficient,stable and effective hole-transporting layer(HTL) materials.The goal is to enhance hole-collection ability,reduce charge recombination,increase built-in voltage,and hence improve the performance as well as the device stability.Transition metal oxides(TMOs) semiconductors such as NiO_x,CuO_x,CrO_x,MoO_x,WO_3,and V_2O_5,have been widely used as HTLs in OSCs.These TMOs are naturally adopted into PSC as HTLs and shows their importance.There are similarities,and also differences in applying TMOs in these two types of main solution processed solar cells.This concise review is on the recent developments of transition metal oxide HTL in OSCs and PSCs.The paper starts from the discussion of the cation valence and electronic structure of the transition metal oxide materials,followed by analyzing the structure-property relationships of these HTLs,which we attempt to give a systematic introduction about the influences of their cation valence,electronic structure,work function and film property on device performance.Pingli Qin Qin He Dan Ouyang Guojia Fang Wallace C.H. Choy Gang Li 2017Science China Chemistry2017,60,4:6
5Experimental study on influencing factors of acid-fracturing effect for carbonate reservoirs显示文摘Acid fracturing treatment is the key technique for stimulation and stable production in carbonate reservoirs.In order to improve the carbonate reservoirs acid fracturing effect,in this paper,with a large number of experiments as the main research methods,study on influencing factors of acidfracturing effect for carbonate reservoirs from increase the effective distance of living acid,increase acid corrosion eched fracture conductivity,reduce the acid fluid loss,etc.The effective distances of live acid calculated with reacted acid limitations measured in different acid systems are quite different from those calculated according to previous standard.Fracture conductivity is one of the key parameters that affects acid fracturing effects,but it's difficult to be predicted accurately due to the strong randomness of acid-rock reaction as well as various influence factors.Analyses of the impacts on fracture conductivity resulted from the rock embedment intensity,closure stress,acid dosage,rock-acid contact time,acid fluid loss,acid pumping rate through self-developed small-core fracture capacity test instrument.Fluid loss during acid fracture can be well controlled by thickened liquid as well as solid particles,but formation damage occurs inevitably.Foamed acid is a specific fluid with high viscosity,low fluid loss,small friction resistance,good retarding property,strong fracture making ability,easy flowback and low damage,which is an ideal acid system for low pressure and low permeability carbonate reservoirs.In this paper,the theoretical study on percolation mechanism and fluid-loss control mechanism of foam(acid)in porous medium are presented with the help of visual microscopic model fluid drive unit.Nianyin Li Jinxin Dai Pingli Liu Zhifeng Luo Liqiang Zhao 2015Petroleum2015,1,2:5
6Influences of Ca and Y Addition on the Microstructure and Corrosion Resistance of Vacuum Die-Cast AZ91 Alloy显示文摘The influences of Ca and Y additions on the microstructure and corrosion resistance of vacuum die-cast AZ91 alloys were investigated by optical microscope,electron scanning microscope,weight-loss test,and electrochemical corrosion experiment.The results indicate that the Ca or Ca and Y additions refined the microstructure and decreased the amount of Mg17Al12 phase on grain boundaries in the alloys.Meanwhile,the addition of Ca and Y led to the formation of network Al2 Ca phase and rod-like Al2 Y phase,improved the corrosion resistance of AZ91 magnesium alloy.Compared with AZ91 alloy,the corrosion rate of AZ91–1.5Ca–1.0Y alloy was decreased to 16.2%,and its corrosion current density was dropped by one order of magnitude after immersion in 3.5 wt% NaCl solution for 24 h.Feng Wang Jibao Li Jing Liu Dan Lv Pingli Mao Zheng Liu 2014Acta Metallurgica Sinica(English Letters)2014,27,4:4
7Feasibility study on application of volume acid fracturing technology to tight gas carbonate reservoir development显示文摘How to effectively develop tight-gas carbonate reservoir and achieve high recovery is always a problem for the oil and gas industry.To solve this problem,domestic petroleum engineers use the combination of the successful experiences of North American shale gas pools development by stimulated reservoir volume(SRV)fracturing with the research achievements of Chinese tight gas development by acid fracturing to propose volume acid fracturing technology for fractured tightgas carbonate reservoir,which has achieved a good stimulation effect in the pilot tests.To determine what reservoir conditions are suitable to carry out volume acid fracturing,this paper firstly introduces volume acid fracturing technology by giving the stimulation mechanism and technical ideas,and initially analyzes the feasibility by the comparison of reservoir characteristics of shale gas with tight-gas carbonate.Then,this paper analyzes the validity and limitation of the volume acid fracturing technology via the analyses of control conditions for volume acid fracturing in reservoir fracturing performance,natural fracture,horizontal principal stress difference,orientation of insitu stress and natural fracture,and gives the solution for the limitation.The study results show that the volume acid fracturing process can be used to greatly improve the flow environment of tight-gas carbonate reservoir and increase production;the incremental or stimulation response is closely related with reservoir fracturing performance,the degree of development of natural fracture,the small intersection angle between hydraulic fracture and natural fracture,the large horizontal principal stress difference is easy to form a narrow fracture zone,and it is disadvantageous to create fracture network,but the degradable fiber diversion technology may largely weaken the disadvantage.The practices indicate that the application of volume acid fracturing process to the tight-gas carbonate reservoir development is feasible in the Ordovician Majiagou Formation of lower Paleozoic,which is of great significance and practical value for domestic tight-gas carbonate reservoir development and studies in the future.Nianyin Li Jinxin Dai Chao Liu Pingli Liu Yanming Zhang Zhifeng Luo Liqiang Zhao 2015Petroleum2015,1,3:4
8Normal families of meromorphic mappings of several complex variables into P^(N)(C) for moving targets显示文摘Motivated by Ru and Stoll's accomplishment of the second main theorem in higher dimension with moving targets, many authors studied the moving target problems in value distribution theory and related topics. But thereafter up to the present, all of researches about normality criteria for families of meromorphic mappings of several complex variables into PN(C) have been still restricted to the hyperplane case. In this paper, we prove some normality criteria for families of meromorphic mappings of several complex variables into PN(C) for moving hyperplanes, related to Nochka's Picard-type theorems.The new normality criteria greatly extend earlier related results.TU Zhenhan LI Pingli 2005Science China Mathematics2005,48,z1:3
9Technical status and challenges of shale gas development in Sichuan Basin,China显示文摘During the past decade,shale gas developments have changed the energy structure in the US natural gas industry,and the exploration activities for shale gas are also increasing worldwide.According to the papers published in recent years,shale gas resources are quite abundant in China.With the successful experience obtained from North America,many state-of-the-art technologies are brought in and refined for field application.State-owned enterprise,private enterprises and foreign enterprises have all actively participated in the exploitation of shale gas.Compared with US,China faces many more challenges,both geological and above-ground,in the development of shale gas resources.This paper begins with the introduction of shale gas reserve distribution in China and the identified shale gas formation in Sichuan Basin.The following paper reviews the methodology employed in the geophysical prospecting,drilling and completion,and hydraulic fracturing process.Since China is in the early stage of shale gas development,there is a great technical gap between China and North America.Based on literature review,the major challenges faced in the exploration and production process are identified.What presented in this paper should be of particular interest to the personnels involved in shale gas production in China and countries that are about to set foot in shale gas business.It will also be of interest to researchers who are dedicated to developing these technologies to unlock unconventional gas resources in China.Pingli Liu Yinsheng Feng Liqiang Zhao Nianyin Li Zhifeng Luo 2015Petroleum2015,1,1:3
10The role of MALAT1 correlates with HPV in cervical cancer显示文摘Yan Jiang Yuehui Li Shujuan Fang Binyuan Jiang Changfei Qin Pingli Xie Guohua Zhou Guancheng Li 2014Oncology Letters2014,,6:3
11Different copper sources and levels affect growth performance,copper content,carcass characteristics,intestinal microorganism and metabolism of finishing pigs显示文摘Copper(Cu)is an essential trace element in the production of swine.This study was conducted to investigate the effect of 3 different sources of Cu on growth performance,Cu metabolism,and intestinal microorganisms of finishing pigs,so as to estimate the bioavailability of the 3 sources for pigs.A total of 42 male finishing pigs(88.74±5.74 kg)were randomly allocated to 7 treatments.The factors were 3 sources(CuSO4,Cu-glycine,Cu-proteinate)and 2 levels(5 and 20 mg/kg)of Cu,plus one negative control treatment(0 mg/kg added Cu level)for the entire 28-d experiment.The average daily gain(ADG)and feed to gain ratio(F:G)both increased when Cu was added.The Cu level in liver,bile,kidney,serum,lung,urine and feces rose(P<0.001)with increasing dietary Cu level regardless of the source.Meanwhile,pigs receiving organic Cu(glycinate or proteinate)retained more Cu and excreted less Cu than those receiving inorganic Cu(CuSO4),which showed that organic forms were more bioavailable.At the transcriptional level,changes in the level and source of dietary Cu resulted in modulation of transporters.In the jejunal mucosa,import transporter high affinity copper uptake protein 1(CTR1)and export transporter ATPase copper transporting alpha(ATP7A)in supplemental Cu treatments were down-regulated compared to the control.Also,peptide transporter 1(PepT1)and lanine-serine-cysteine transporter,type-2(ASCT2)were significantly(P<0.01)up-regulated in 20 mg/kg Cu-proteinate and Cu-glycinate treatments,respectively.Microbial diversity was lowest in the 20 mg/kg CuSO4 treatment,and the ratio of Firmicutes to Bacteroidetes was higher in added Cu treatments,especially Cu-glycinate treatment.These results indicate that uptake of different Cu forms is facilitated by different transporters and transport mechanisms,and compared with inorganic Cu,organic Cu provides benefits to intestinal microflora and reduces Cu excretion.Yang Wen Runxian Li Xiangshu Piao Gang Lin Pingli He 2022Animal Nutrition2022,,1:2
12Simultaneous determination of fifteen illegal dyes in animal feeds and poultry products by ultra-high performance liquid chromatography tandem mass spectrometry显示文摘Rongyuan Liu Wenjing Hei Pingli He Zhen Li 2011Journal of Chromatography B2011,,24:2
13Study on a new air-gap membrane distillation module for desalination 显示文摘Geng Hongxin Wu Haoyun Li Pingli He Qingfeng 2014Desalination2014,334,1:1
14Experimental study of hollow fiber AGMD modules with energy recovery for high saline water desalination 显示文摘Geng Hongxin He Qingfeng Wu Haoyun Li Pingli Zhang Chunyao Chang Heying 2014Desalination2014,344,:1
15Hot Tearing Susceptibility of AXJ530 Alloy Under Low-Frequency Alternating Magnetic Field显示文摘Herein, a hot tearing measured system with external excitation coil and a differential thermal analysis system with applied magnetic field were used to study the effects of low-frequency alternating magnetic field on the solidification behavior and hot tearing susceptibility(HTS) of the AXJ530 alloy under different magnetic field parameters. The hot tearing volume of the castings was measured via paraffin infiltration method. The microstructure of the hot tearing zone of the casting was observed using optical microscopy and scanning electron microscopy, and the phase composition was analyzed using X-ray diffraction and energy depressive spectroscopy. The experimental results show that the solidification interval of AXJ530 alloy was shortened and the dendrite coherency temperature of the alloy decreased with the increase in frequency of alternating magnetic field. Under appropriate magnetic field parameters, the electromagnetic force could enhance the convection in the melt to promote the flow of the residual liquid phase, refine the microstructure, and optimize the feeding channel in the late solidification stage, which reduced the HTS of the alloy. However, when the magnetic field frequency was increased to 15 Hz, the induced current generated excessive Joule heat to the melt. At this time, the thermal action of the magnetic field coarsened the microstructure of the alloy, resulting in an increase in HTS of the alloy.Xudong Du Feng Wang Zhi Wang Xingxing Li Zheng Liu Pingli Mao 2020Acta Metallurgica Sinica(English Letters)2020,33,9:1
16Preparation and in vitro immunomodulatory effect of curdlan sulfate显示文摘Pingli Li Xinke Zhang Yanna Cheng Juan Li Yuliang Xiao Qian Zhang Aizhen Zong Chuanqing Zhong Fengshan Wang 2013Carbohydrate Polymers2013,,:1
17Recent advances in immunoassays and biosensors for mycotoxins detection in feedstuffs and foods显示文摘Mycotoxins are secondary metabolites produced by fungus.Many mycotoxin species are highly toxic and are frequently found in cereals and feedstuffs.So,powerful detection methods are vital and effective ways to prevent feed contamination.Traditional detection methods can no longer meet the needs of massive,real-time,simple,and fast mycotoxin monitoring.Rapid detection methods based on advanced material and sensor technology are the future trend.In this review,we highlight recent progress of mycotoxin rapid detection strategies in feedstuffs and foods,especially for simultaneous multiplex mycotoxin determination.Immunoassays,biosensors,and the prominent roles of nanomaterials are introduced.The principles of different types of recognition and signal transduction are explained,and the merits and pitfalls of these methods are compared.Furthermore,limitations and challenges of existing rapid sensing strategies and perspectives of future research are discussed.Runxian Li Yang Wen Fenglai Wang Pingli He 2022Journal of Animal Science and Biotechnology2022,13,2:1
18Determination of beta-conglycinin in soybean and soybean products using a sandwich enzyme-linked immunosorbent assay显示文摘Wenjing Hei Zhen Li Xi Ma Pingli He 2012Analytica Chimica Acta2012,,:1
19Preparation of iPP hollow fiber microporous membranes via thermally induced phase separation with Co-solvent of DBP and DOP 显示文摘YANG Zhensheng LI Pingli WANG Shichang 2006Desalination2006,192,:1
20An eleetrochemical immunosensor based on agarose hydrogel films for rapid determination of ractopamine 显示文摘Li Shen Pingli He 2007Electrochemistry Communications2007,9,:1
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