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23篇 您的检索式:作者名="Liangjie Liu"
    题名 作者 年代 出处 被引量
1Differential responses of short-term soil respiration dynamics to the experimental addition of nitrogen and water in the temperate semi-arid steppe of Inner Mongolia, China显示文摘We examined the effects of simulated rainfall and increasing N supply of different levels on CO2 pulse emission from typical Inner Mongolian steppe soil using the static opaque chamber technique, respectively in a dry June and a rainy August. The treatments included NH4NO3 additions at rates of 0, 5, 10, and 20 g N/(m2·year) with or without water. Immediately after the experimental simulated rainfall events, the CO2 effluxes in the watering plots without N addition(WCK) increased greatly and reached the maximum value at 2 hr. However, the efflux level reverted to the background level within 48 hr. The cumulative CO2 effluxes in the soil ranged from 5.60 to 6.49 g C/m2over 48 hr after a single water application, thus showing an increase of approximately 148.64% and 48.36% in the effluxes during both observation periods. By contrast, the addition of different N levels without water addition did not result in a significant change in soil respiration in the short term. Two-way ANOVA showed that the effects of the interaction between water and N addition were insignificant in short-term soil CO2 effluxes in the soil. The cumulative soil CO2fluxes of different treatments over 48 hr accounted for approximately 5.34% to 6.91% and 2.36% to 2.93% of annual C emission in both experimental periods. These results stress the need for improving the sampling frequency after rainfall in future studies to ensure more accurate evaluation of the grassland C emission contribution.Yuchun Qi Xinchao Liu Yunshe Dong Qin Peng Yating He Liangjie Sun Junqiang Jia Congcong Cao 2014Journal of Environmental Sciences2014,26,4:17
2Litter decomposition and C and N dynamics as affected by N additions in a semi-arid temperate steppe, Inner Mongolia of China显示文摘Litter decomposition is the fundamental process in nutrient cycling and soil carbon(C) sequestration in terrestrial ecosystems. The global-wide increase in nitrogen(N) inputs is expected to alter litter decomposition and,ultimately, affect ecosystem C storage and nutrient status. Temperate grassland ecosystems in China are usually N-deficient and particularly sensitive to the changes in exogenous N additions. In this paper, we conducted a 1,200-day in situ experiment in a typical semi-arid temperate steppe in Inner Mongolia to investigate the litter decomposition as well as the dynamics of litter C and N concentrations under three N addition levels(low N with 50 kg N/(hm2?a)(LN), medium N with 100 kg N/(hm2?a)(MN), and high N with 200 kg N/(hm2?a)(HN)) and three N addition forms(ammonium-N-based with 100 kg N/(hm2?a) as ammonium sulfate(AS), nitrate-N-based with 100 kg N/(hm2?a) as sodium nitrate(SN), and mixed-N-based with 100 kg N/(hm2?a) as calcium ammonium nitrate(CAN)) compared to control with no N addition(CK). The results indicated that the litter mass remaining in all N treatments exhibited a similar decomposition pattern: fast decomposition within the initial 120 days, followed by a relatively slow decomposition in the remaining observation period(120–1,200 days). The decomposition pattern in each treatment was fitted well in two split-phase models, namely, a single exponential decay model in phase I(<398 days) and a linear decay function in phase II(≥398 days). The three N addition levels exerted insignificant effects on litter decomposition in the early stages(<398 days, phase I; P>0.05). However, MN and HN treatments inhibited litter mass loss after 398 and 746 days, respectively(P<0.05). AS and SN treatments exerted similar effects on litter mass remaining during the entire decomposition period(P>0.05). The effects of these two N addition forms differed greatly from those of CAN after 746 and 1,053 days, respectively(P<0.05). During the decomposition period, N concentrations in the decomposing litter increased whereas C concentrations decreased, which also led to an exponential decrease in litter C:N ratios in all treatments. No significant effects were induced by N addition levels and forms on litter C and N concentrations(P>0.05). Our results indicated that exogenous N additions could exhibit neutral or inhibitory effects on litter decomposition, and the inhibitory effects of N additions on litter decomposition in the final decay stages are not caused by the changes in the chemical qualities of the litter, such as endogenous N and C concentrations. These results will provide an important data basis for the simulation and prediction of C cycle processes in future N-deposition scenarios.Qin PENG YuChun QI YunShe DONG YaTing HE ShengSheng XIAO XinChao LIU LiangJie SUN JunQiang JIA ShuFang GUO CongCong CAO 2014Journal of Arid Land2014,6,4:16
3Effects of a conversion from grassland to cropland on the different soil organic carbon fractions in Inner Mongolia, China显示文摘耕作是除放牧以外影响草地生态系统的最重要的人的活动之一,但是它土壤上的影响总计器官的碳(C) ,特别在有倾向的器官的 C 部分上还充分没被理解。在这份报纸,在土壤收割不同部分的器官的 C 水池的角色在中国,和在不同 C 部分之间的关系的内部蒙古在一个草地大草原区域被调查也被讨论。结果显示在大草原和栽培土地的不同 C 部分的集中都与土壤深度日益增多地减少了。在到为 36 年的春天小麦地的从大草原的变换以后,在 0~100 厘米土壤深度的全部的器官的碳( TOC )集中在12.3%~28.2%减少了,并且表面土壤地平线的 TOC ,特别那些更显著地 030 厘米减少了( p < 0.01 )。溶解的器官的碳(文档) 和在 040 厘米的深度的微生物引起的生物资源碳(MBC ) 被发现分别地在 66.7% ~ 77.1% 和 36.5% ~ 42.4% 减少了。在 S。baicalensis 大草原,春天小麦地里的到 TOC 的文档在 0.52% 和 0.60% 之间改变了的土壤的比率,和那些仅仅在 0.18%0.20% 的范围。在春天小麦的微生物引起的商(qMBs ) 回答,从 1.11% ~ 1.40% 变化,也是比在 S 的那些低的。baicalensis 大草原,它在 1.50%1.63% 的范围。文档的变化对耕作骚乱更敏感。土壤 TOC,文档,和 MBC 是显著地积极的在 S 与对方一起相关。baicalensis 大草原,但是在春天小麦地里,在文档之间的相互关系和在文档和 MBC 之间的 TOC 和那没到达 0.05 的意义水平。QI Yuchun DONG Yunshe PENG Qin XIAO Shengsheng HE Yating LIU Xinchao SUN Liangjie JIA Junqiang YANG Zhijie 2012Journal of Geographical Sciences2012,22,2:13
4Macrophage-activating lipopeptide-2 downregulates the expression of ATP-binding cassette transporter A1 by activating the TLR2/ NF-KB/ZNF202 pathway in THP-1 macrophages显示文摘Liangjie Peng Zizhen Zhang Min Zhang Xiaohua Yu Feng Yao Yulin Tan Dan Liu Duo Gong Huang Chong Xiaoyan Liu Xilong Zheng Guoping Tian Chaoke Tang 2016Acta Biochimica et Biophysica Sinica2016,48,4:6
5Environmental evolution in the salt-water intrusion area south of Laizhou Bay since late Pleistocene显示文摘Laizhou 海湾的向南沿海的平原是之一典型咸水在哪个是的中国,出现和开发的侵入区域仔细与 palaeoenvironment 进化联系了。花粉。ZHANG Zulu LIU Enfeng ZHANG Yan XIN Liangjie 2008Journal of Geographical Sciences2008,18,1:4
6Response of soil N_2O emissions to precipitation pulses under different nitrogen availabilities in a semiarid temperate steppe of Inner Mongolia, China显示文摘Short-term nitrous oxide(N2O) pulse emissions caused by precipitation account for a considerable portion of the annual N2O emissions and are greatly influenced by soil nitrogen(N) dynamics. However, in Chinese semiarid temperate steppes, the response of N2O emissions to the coupling changes of precipitation and soil N availability is not yet fully understood. In this study, we conducted two 7-day field experiments in a semiarid temperate typical steppe of Inner Mongolia, China, to investigate the N2O emission pulses resulting from artificial precipitation events(approximately equivalent to 10.0 mm rainfall) under four N addition levels(0, 5, 10 and 20 g N/(m2·a)) using the static opaque chamber technique. The results show that the simulated rainfall during the dry period in 2010 caused greater short-term emission bursts than that during the relatively rainy observation period in 2011(P<0.05). No significant increase was observed for either the N2O peak effluxes or the weekly cumulative emissions(P>0.05) with single water addition. The peak values of N2O efflux increased with the increasing N input. Only the treatments with water and medium(WN10) or high N addition(WN20) significantly increased the cumulative N2O emissions(P<0.01) in both experimental periods. Under drought condition, the variations in soil N2O effluxes were positively correlated with the soil NH4-N concentrations in the three N input treatments(WN5, WN10, and WN20). Besides, the soil moisture and temperature also greatly influenced the N2O pulse emissions, particularly the N2O pulse under the relatively rainy soil condition or in the treatments without N addition(ZN and ZWN). The responses of the plant metabolism to the varying precipitation distribution and the length of drought period prior to rainfall could greatly affect the soil N dynamics and N2O emission pulses in semiarid grasslands.XinChao LIU YuChun QI YunShe DONG Qin PENG YaTing HE LiangJie SUN JunQiang JIA CongCong CAO 2014Journal of Arid Land2014,6,4:3
7Study of the intensity and driving factors of land use/cover change in the Yarlung Zangbo River, Nyang Qu River, and Lhasa River region, Qinghai-Tibet Plateau of China显示文摘Land use/land cover(LULC) is an important part of exploring the interaction between natural environment and human activities and achieving regional sustainable development. Based on the data of LULC types(cropland, forest land, grassland, built-up land, and unused land) from 1990 to 2015, we analysed the intensity and driving factors of land use/cover change(LUCC) in the Yarlung Zangbo River,Nyang Qu River, and Lhasa River(YNL) region, Qinghai-Tibet Plateau of China, using intensity analysis method, cross-linking table method, and spatial econometric model. The results showed that LUCC in the YNL region was nonstationary from 1990 to 2015, showing a change pattern with 'fast-slow-fast' and 'U-shaped'. Built-up land showed a steady increase pattern, while cropland showed a steady decrease pattern. The gain of built-up land mainly came from the loss of cropland. The transition pattern of LUCC in the YNL region was relatively single and stable during 1990–2015. The transition pattern from cropland and forest land to built-up land was a systematic change process of tendency and the transition pattern from grassland and unused land to cropland was a systematic change process of avoidance. The transition process of LUCC was the result of the combined effect of natural environment and social economic development in the YNL region. This study reveals the impact of ecological environment problems caused by human activities on the land resource system and provides scientific support for the study of ecological environment change and sustainable development of the Qinghai-Tibet Plateau.LUO Jing XIN Liangjie LIU Fenggui CHEN Qiong ZHOU Qiang ZHANG Yili 2022Journal of Arid Land2022,14,4:2
8Experimental study of the effect of drilling pipe on vortex-induced vibration of drilling risers显示文摘Liu Qingyou Mao Liangjie Zhou Shouwei 2014Journal of Vibroengineering2014,16,4:1
9Triple-functional bone adhesive with enhanced internal fixation,bacteriostasis and osteoinductive properties for open fracture repair显示文摘At present,effective fixation and anti-infection implant materials represent the mainstay for the treatment of open fractures.However,external fixation can cause nail tract infections and is ineffective for fixing small fracture fragments.Moreover,closed reduction and internal fixation during the early stage of injury can lead to potential bone infection,conducive to bone nonunion and delayed healing.Herein,we designed a bone adhesive with anti-infection,osteogenic and bone adhesion fixation properties to promote reduction and fixation of open fractures and subsequent soft tissue repair.It was prepared by the reaction of gelatin(Gel)and oxidized starch(OS)with vancomycin(VAN)-loaded mesoporous bioactive glass nanoparticles(MBGNs)covalently cross-linked with Schiff bases.Characterization and adhesion experiments were conducted to validate the successful preparation of the Gel-OS/VAN@MBGNs(GOVM-gel)adhesive.Meanwhile,in vitro cell experiments demonstrated its good antibacterial effects with the ability to stimulate bone marrow mesenchymal stem cell(BMSCs)proliferation,upregulate the expression of alkaline phosphatase(ALP)and osteogenic proteins(RunX2 and OPN)and enhance the deposition of calcium nodules.Additionally,we established a rat skull fracture model and a subcutaneous infection model.The histological analysis showed that bone adhesive enhanced osteogenesis,and in vivo experiments demonstrated that the number of inflammatory cells and bacteria was significantly reduced.Overall,the adhesive could promote early reduction of fractures and antibacterial and osteogenic effects,providing the foothold for treatment of this patient population.Yusheng Yang Shenghui Su Shencai Liu Weilu Liu Qinfeng Yang Liangjie Tian Zilin Tan Lei Fan Bin Yu Jian Wang Yanjun Hu 2023Bioactive Materials2023,,7:1
10Novel dual‐mode circular patch bandpass filter using CSRR slot‐type perturbation显示文摘Xinrong Shi Yuan’an Liu Qing He Liangjie Gu Hongtao Zhang Fang Liu Kaiming Liu 2013Lett2013,,3:1
11Large-scale synthesis of monodisperse 2ZnO·2B2O3·3H2O micro/nano single crystals and their effect in polypropylene显示文摘Liu Qiaoyun Xiao Yong Rong Wen Yuan Liangjie 2009Soft Materials2009,7,2:1
12Experimental study of the effect of drilling pipe on vortex-induced vibration of drilling risers显示文摘LIU Qingyou MAO Liangjie ZHOU Shouwei 2014Journal of Vibroengineering2014,16,4:1
13Effects of water and nitrogen addition on vegetation carbon pools in a semi-arid temperate steppe显示文摘Global change will lead to increases in regional precipitation and nitrogen(N) deposition in the semi-arid grasslands of northern China. We investigated the responses of vegetation carbon(C) pools to simulated precipitation and N deposition increases through field experiments in a typical steppe in Inner Mongolia. The treatments included NH_4NO_3 addition at concentrations of 0(CK), 5(LN, low nitrogen), 10(middle nitrogen, MN), and 20(HN,high nitrogen)(g m^(-2)a^(-1)) with and without water. After three consecutive years of treatment, from 2010 to 2012,water addition did not significantly change the size of the total vegetation C pools, but it significantly decreased the ratio of root:shoot(R:S)(P = 0.05) relative to controls. By contrast, N addition significantly increased the total vegetation C pools. The C pools in the LN, MN and HN treatments increased by 22, 39 and 44 %, respectively. MN produced the largest effect among the N concentrations,although differences between N-added treatments were not significant(P [ 0.05). N addition significantly reduced the ratio of root:shoot(R:S)(P = 0.03). However, there were no significant interactive effects of water and N addition on the vegetation C pools.Junqiang Jia Yunshe Dong Yuchun Qi Qin Peng Xinchao Liu Liangjie Sun Shufang Guo Yunlong He Congcong Cao Zhongqing Yan 2016Journal of Forestry Research2016,27,3:1
14Airway Scope、Airtraq、Macintosh喉镜用于困难气道的气管插管:一项关于无操作经验人员在人体模型上操作的对照研究显示文摘背景AirwayScope(AWS)和Airtraq(ATQ)喉镜的镜片结构相似,在本次研究中,我们评估了无操作经验的人员在模拟人困难气道模型上分别应用AWS、ATQ和Macintoshlamgoscope(ML)喉镜所完成气管插管的难易性。方法24名无气管插管经验的5年级医学生参加了此项研究,采用人体模型(SimMan)来模拟各种不同的困难气道,包括颈椎强直、张口受限、咽部阻塞3种场景。气管插管装置及困难气道类型的顺序是随机的。我们分析了气管插管的成功率,声门暴露、气管插管、张肺所需的时间,调整手法使用次数和摩擦牙齿的喀声次数。24名学生用3种不同的插管装置在4种不同的气道条件下进行操作。结果与ML组相比,AWS组、ATQ组均有较高的气管插管成功率(AWS组为100%,ATQ组为98%,ML组为89%,AWS组、ATQ组与ML组相比P〈0.05),AWS组所需的插管时间显著少于ATQ组和ML组(AWS组为11±6秒,ATQ组为16±12秒,ML组为16±11秒),与ATQ组和ML组相比,AWS组需要优化调整的次数显著减少(P〈0.05),ML组插管过程中可闻及的牙齿喀声比AWS组和ATQ组显著增多。结论对于在模拟困难气道下进行气管插管的无插管经验的人员,AWS和ATQ可能是更适合的插管装置,有必要在今后的临床实践中进一步证实此项发现。Liangji Liu Koichi Tanigawa Shinji Kusunoki Tomoko Tamura Kohei Ota Satoshi Yamaga Yoshiko Kida Tadatsugu Otani Takuma Sadamori Taku Takeda Yasumasa Iwasaki Nobuyuki Hirohashi 毛祖旻(译) 李士通(校) 2012麻醉与镇痛2012,8,4:1
15Review and prospect of maintenance technology for traction system of high-speed train显示文摘In the past few decades,high-speed trains have witnessed tremendous and vigorous development with the appearance of the oil crisis and industrialization,which became a significant trend in the transportation industry the world over.With the increase of high-speed railway mileage,the amount of high-speed train has grown sharply,the service life of the trains has increased gradually and the components of the vehicle traction system have become worn and aged as a result.Therefore,advanced maintenance technology and its application are key factors to reduce maintenance cost,human resource input and ensure safe,stable and reliable operation of trains.This paper summarizes and discusses the development,application mode,maintenance management and maintenance technology of high-speed railways of the major countries in the world,especially discusses the condition-based maintenance and the key technology of the traction electrical system,and offers the prospect of research direction and the development of traction maintenance technology.Shaolong Xu Chunyang Chen Zhenjun Lin Xiao Zhang Jisheng Dai Liangjie Liu 2021Transportation Safety and Environment2021,3,3:0
16Genome-wide identification and spatiotemporal expression profiling of zinc finger SWIM domain-containing protein family genes显示文摘The biological function of the novel zinc-finger SWIM domain-containing protein family(ZSWIM)during embryonic development remains elusive.Here,we conducted a genome-wide analysis to explore the evolutionary processes of the ZSWIM gene family members in mice,Xenopus tropicalis,zebrafish,and humans.We identified nine putative ZSWIM genes in the human and mouse genome,eight in the Xenopus genome,and five in the zebrafish genome.Based on multiple sequence alignment,three members,ZSWIM5,ZSWIM6,and ZSWIM8,demonstrated the highest homology across all four species.Using available RNA sequencing(RNAseq)data,ZSWIM genes were found to be widely expressed across different tissues,with distinct tissuespecific properties.To identify the functions of the ZSWIM protein family during embryogenesis,we examined temporal and spatial expression patterns of zswim family genes in Xenopus embryos.Quantitative real-time polymerase chain reaction(qRT-PCR)revealed that each member had a distinct expression profile.Whole-mount in situ hybridization showed that both zswim1 and zswim3 were maternally expressed genes;zswim5 and zswim6were expressed throughout embryogenesis and displayed dynamic expression in the brain,eyes,somite,and bronchial arch at the late tailbud stages;zswim7 was detected in the eye area;zswim8 showed a dynamic expression pattern during the tailbud stages,with expression detected in the brain,eyes,and somite;zswim9 was faintly expressed throughout embryonic development.This study provides a foundation for future research to delineate the functions of ZSWIM gene members.Imtiaz Ul Hassan Hafiz Mamoon Rehman Ziran Liu Liangji Zhou Muhammad Kaleem Samma Chengdong Wang Zixin Rong Xufeng Qi Dongqing Cai Hui Zhao 2023Zoological Research2023,44,3:0
17嗅觉受体OLFR734作为激素Asprosin的受体调控糖代谢显示文摘文章简介高血糖是2型糖尿病(T2D)的典型特征,而糖异生的过度增强是导致血糖水平升高的主要原因。肝脏是糖异生的主要器官。在体内,肝脏糖异生受到体内多重激素水平的调控。Asprosin是机体在饥饿时由白色脂肪组织分泌的一种激素,可以通过结合未知的G蛋白偶联受体(GPCR)促进肝脏糖异生。李二伟 单海丽 陈力群 隆艾君 张元元 Yang Liu Liangjie Jia Fangchao Wei Jinbo Han Tong Li Xiaohui Liu Haiteng Deng 王一国 2020科学新闻2020,,2:0
18Famsin,a novel gut-secreted hormone,contributes to metabolic adaptations to fasting via binding to its receptor OLFR796显示文摘The intestine is responsible for nutrient absorption and orchestrates metabolism in different organs during feeding,a process which is partly controlled by intestine-derived hormones.However,it is unclear whether the intestine plays an important role in metabolism during fasting.Here we have identified a novel hormone,famsin,which is secreted from the intestine and promotes metabolic adaptations to fasting.Mechanistically,famsin is shed from a single-pass transmembrane protein,Gm11437,during fasting and then binds OLFR796,an olfactory receptor,to activate intracellular calcium mobilization.This famsin-OLFR796 signaling axis promotes gluconeogenesis and ketogenesis for energy mobilization,and torpor for energy conservation during fasting.In addition,neutralization of famsin by an antibody improves blood glucose profiles in diabetic models,which identifies famsin as a potential therapeutic target for treating diabetes.Therefore,our results demonstrate that communication between the intestine and other organs by a famsin-OLFR796 signaling axis is critical for metabolic adaptations to fasting.Aijun Long Yang Liu Xinlei Fang Liangjie Jia Zhiyuan Li Jiang Hu Shuang Wu Chao Chen Ping Huang Yiguo Wang 2023Cell Research2023,33,4:0
19Microporous Nitrogen-Rich Polymers via Ullmann Coupling Reaction for Selective Adsorption of C_(2)H_(2) over CH_(4)显示文摘Acetylene purification from methane is challenging in the field of porous organic polymers(POPs).Herein,we have provided one-pot Ullmann coupling reaction to synthesize a series of POPs with rich N-sites,named FJU-POP-n,wherein the low-cost and non-toxic Cu(acac)2 and environmental-friendly glycerol are employed as catalyst and solvent,respectively.Jitao Huang Qinfang Peng Chulong Liu Yingxiang Ye Liangji Chen Yuanchao Lv Yisi Yang Shimin Chen Fahui Xiang Hao Zhang Zhangjing Zhang Shengchang Xiang 2023Chinese Journal of Chemistry2023,41,5:0
20Exosomes-loaded electroconductive nerve dressing for nerve regeneration and pain relief against diabetic peripheral nerve injury显示文摘Over the years,electroconductive hydrogels(ECHs)have been extensively applied for stimulating nerve regeneration and restoring locomotor function after peripheral nerve injury(PNI)with diabetes,given their favorable mechanical and electrical properties identical to endogenous nerve tissue.Nevertheless,PNI causes the loss of locomotor function and inflammatory pain,especially in diabetic patients.It has been established that bone marrow stem cells-derived exosomes(BMSCs-Exos)have analgesic,anti-inflammatory and tissue regeneration properties.Herein,we designed an ECH loaded with BMSCs-Exos(ECH-Exos)electroconductive nerve dressing to treat diabetic PNI to achieve functional recovery and pain relief.Given its potent adhesive and self-healing properties,this laminar dressing is convenient for the treatment of damaged nerve fibers by automatically wrapping around them to form a size-matched tube-like structure,avoiding the cumbersome implantation process.Our in vitro studies showed that ECH-Exos could facilitate the attachment and migration of Schwann cells.Meanwhile,Exos in this system could modulate M2 macrophage polarization via the NF-κB pathway,thereby attenuating inflammatory pain in diabetic PNI.Additionally,ECH-Exos enhanced myelinated axonal regeneration via the MEK/ERK pathway in vitro and in vivo,consequently ameliorating muscle denervation atrophy and further promoting functional restoration.Our findings suggest that the ECH-Exos system has huge prospects for nerve regeneration,functional restoration and pain relief in patients with diabetic PNI.Qinfeng Yang Shenghui Su Shencai Liu Sheng Yang Jing Xu Yixiu Zhong Yusheng Yang Liangjie Tian Zilin Tan Jian Wang Zhiqiang Yu Zhanjun Shi Fangguo Liang 2023Bioactive Materials2023,,8:0
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