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A data envelopment analysis of agricultural technical efficiency of Northwest Arid Areas in China

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Frontiers of Agricultural Science and Engineering 2017年第2期4卷 195-207页

作者： Yubao WANG lijie shi Haojie ZHANG shikun SUN Key Laboratory of Agricultural Soil and Water Engineering in Arid Area Ministry of Education/Northwest A&F University Institute of Water Saving Agriculture in Arid Regions of China Northwest A&F University Institute of Soil and Water Conservation Chinese Academy of Sciences & Ministry of Water Resources

Severe resource shortage and waste of resource in agricultural production make it necessary to assess efficiency to increase productivity with high efficiency and ensure sustainable agricultural development. This paper adopted an input-oriented data envelopment analysis(DEA) method with the assumption of variable returns to scale to evaluate agricultural production efficiency of 100 major irrigation districts in Northwest China in *** findings of this paper were as follows: firstly, the average value of total technical efficiency, pure technical efficiency and scale efficiency of those irrigation districts in Northwest China were 0.770, 0.825 and 0.931,respectively; secondly, 30% of irrigation districts were technically efficient, while 42% and 32% of them showed pure technical and scale efficiency respectively. Among inefficient decision-making units, total technical efficiency score varied from 0.313 to 0.966, showing significant geographical differences, but geographical differences of pure technical efficiency was more consistent with that of total technical efficiency; thirdly, input redundancy was evident. Inputs of agricultural population, irrigation area,green water, blue water, consumption of fertilizer and agricultural machinery could be reduced by 34.88%,40.19%, 43.85%, 47.10%, 41.53% and 42.21% respectively without reducing agricultural outputs. Furthermore,irrigation area, green water and blue water had relatively high slack movement though Northwest China which is short of water resources. Based on these results, this paper drew the following conclusions: First, there is huge potential for Northwest China to improve its agricultural production efficiency, and agro-technology not input scale had greater influence on improvement. Second, farmers needed proper guidance in order to reduce agricultural inputs and it is time to centralize agricultural management for overall agricultural inputs regulation and control.

关键词： agricultural production efficiency DEA model input redundancy irrigation districts Northwest Arid Areas in China

Dual-Color Lasing Lines from EMPs in Diluted MagneticSemiconductor CdS:NiI Structure

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Research 2019年第1期2019卷 400-414页

作者： Muhammad Arshad Kamran Bingsuo Zou Kang Zhang Xiongtao Yang Fujian Ge lijie shi Thamer Alharbi Department of Physics College of ScienceMajmaah UniversityAl-Majmaah 11952Saudi Arabia Key Lab of Featured Metal Resources Utilization and Advanced Materials Development Nano and Energy Research CenterSchool of PhysicsGuangxi UniversityNanning 530004China Beijing Key Laboratory of Nanophotonics&Ultrafine Optoelectronic Systems Beijing Institute of TechnologyBeijing 100081China

Have one ever seen a semiconductor that can issue two-color lasing lines? The diluted magnetic semiconductor (DMS) can do ***, we have observed dual lasing lines of 530 nm and 789 nm from a DMS structure of CdS:NiI, in which the excitonic magneticpolaron (EMP) and localized excitonic magnetic polaron (LEMP) are excitations out of ferromagnetic (NiS)x nanocluster and NiI2nanoclusters within CdS lattice;both of them could lead to the collective EMP state at high excitation and therein produce coherentemission lines simultaneously. This occurrence is due to the superposition of EMP near CdS bandedge and the combination of thecharge-transfer band of (NiI)n cluster with the LEMP within CdS lattice by overcoming the strong electron correlation of NiI clusterin a DMS structure, evidenced also by ab initio calculation. This finding opens a way to understand the collective behaviour of spincoupled excitons in DMS and to find novel applications in the spin-related quantum technology.

关键词： collective lasing excitation

Effect of Yang-activating and stasis-eliminating decoction from Traditional Chinese Medicine on intestinal mucosal permeability in rats with ulcerative colitis induced by dextran sulfate sodium

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Journal of Traditional Chinese Medicine 2017年第4期37卷 452-460页

作者： shi lijie shi Lei Liu Leilei Feng Xiuxian Wang Jing Yang Qiang Chai shiwei Gou Jing Zang Fenglin He Sufei Department of Spleen and Stomach First Teaching Hospital of Tianjin University of Traditional Chinese Medicine Tianjin 300193 China Department of Graduate School of Beijing University of Chinese Medicine Beijing 100029 China Department of Graduate School of Tianjin University of Traditional Chinese Medicine Tianjin 300000 China Department of Spleen and Stomach Shijiazhuang Traditional Chinese Medicine hospital Shijiazhuang 050000 China Department of Pharmacy First Teaching Hospital of Tianjin University of Traditional Chinese Medicine Tianjin 300193 China Department of Clinical Laboratory First Teaching Hospital of Tianjin University of Traditional Chinese Medicine Tianjin 300193 China Department of Pathology Tianjin Medical University Cancer Institute and Hospital Tianjin 300060 China Department of Scientific Research Tianjin University of Traditional Chinese Medicine Tianjin 300073 China

OBJECTIVE: To evaluate the effect of decoction prepared with Yang-activating and stasis-eliminating medicinals from Traditional Chinese Medicine(TCM) on the intestinal mucosal permeability in rats with ulcerative colitis induced by dextran sulfate sodium(DSS).METHODS: Totally 55 male Wistar rats(body weight of 170-190 g) were randomly divided into the blank group(n = 10) and the model duplication group(n = 45). The blank group was not intervened, while the other was modeled with 5% dextran sulfate sodium by gavaging in a dosage of4 m L per day to induce ulcerative colitis, a total of7 days. Then, the model rats were divided into model blank group, mesalazine group and TCM group,and each group was consisted of 15 rats. They were given retention enema 10 min with normal saline,mesalazine enema(0.036 g/m L), and Yang-activating and stasis-eliminating decoction [0.54 g/m L of a decoction boiled by Puhuang(Pollen Typhae), Xiebai(Bulbus Allii Macrostemonis) and Wulingzhi(Faeces Trogopteri)] for 10 days respectively. Afterwards,all of the rats were evaluated by disease activity index(DAI), histological changes of distal colon, expression of occludin protein and ultrastructure of intestinal epithelial cells. Furthermore, ratio of lactulose to mannitol(L/M) discharged in urine was ***: Comparing the results between TCM and model control groups, scores of DAI and histological lesions decreased significantly(P = 0.000 0.05).CONCLUSION: The decoction prepared with Yang-activating and stasis-eliminating TCM medicianls can restore intestinal mucosal epithelial cells and tight junctions the model rats with ulcerative colitis; it can redu

关键词： Colitis, ulcerative Epithelial cells Intestinal mucosa Permeability Occludin Dextran sulfate Removing blood stasis Activating Yang Medicine, Chinese Traditional

一里坪硫酸镁亚型盐湖钾镁混盐转化-浮选中物相行为

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化工学报 2019年第5期70卷 1832-1841页

作者：时历杰王敏中国科学院青海盐湖研究所中国科学院盐湖资源综合高效利用重点实验室青海西宁810008 青海省盐湖资源化学重点实验室青海西宁810008

加水比例及物相行为研究对硫酸镁亚型盐湖钾镁混盐转化制备软钾镁矾工艺具有重要意义。以柴达木盆地一里坪盐湖钾镁混盐为对象,采用"转化-浮选"法制备钾盐镁矾,研究了钾镁混盐初始及转化产生的物相行为。结果表明,初始物相光卤石、水氯... 详细信息

加水比例及物相行为研究对硫酸镁亚型盐湖钾镁混盐转化制备软钾镁矾工艺具有重要意义。以柴达木盆地一里坪盐湖钾镁混盐为对象,采用"转化-浮选"法制备钾盐镁矾,研究了钾镁混盐初始及转化产生的物相行为。结果表明,初始物相光卤石、水氯镁石溶解速率最快,分解得到新物相氯化钾。初始物相钾盐镁矾及其转化得到的新物相软钾镁矾,溶解转化速率次之,加水比例高于0.40时,速率趋于平缓。初始物相氯化钠溶解速率始终最低。转化过程中,氯化钾只发生溶解行为,并未与软钾镁矾反应生成新物相硫酸钾。转化实验结果与理论计算结果吻合度高,相对误差低于4%,利用介稳相图理论计算能够指导钾镁混盐转化。同时,正浮选捕收剂对含钾物相的捕收吸附能力强于反浮选,钾的总收率达到66%。

关键词：钾镁混盐溶解转化钾盐镁矾物相行为硫酸镁亚型介稳相平衡制备浮选

柴达木盆地一里坪盐湖卤水水化学及夏季蒸发中钾、锂、硼行为

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湖泊科学 2019年第2期31卷 590-608页

作者：时历杰王敏中国科学院青海盐湖研究所中国科学院盐湖资源综合高效利用重点实验室西宁810008 青海省盐湖资源化学重点实验室西宁810008

本文综合利用Na^+,K^+,Mg^(2+)//Cl^-,SO_4^(2-)-H_2O五元体系干基图、水图、钠图,研究柴达木盆地一里坪盐湖硫酸盐型卤水水化学特征受外来淡水补给掺杂、选择性溶解、年温差等多因素影响产生的季节性变化,其中温度为主要因素.当卤水温... 详细信息

本文综合利用Na^+,K^+,Mg^(2+)//Cl^-,SO_4^(2-)-H_2O五元体系干基图、水图、钠图,研究柴达木盆地一里坪盐湖硫酸盐型卤水水化学特征受外来淡水补给掺杂、选择性溶解、年温差等多因素影响产生的季节性变化,其中温度为主要因素.当卤水温度降低至0℃,开始析出芒硝,水化学变质系数MgSO_4/MgCl_2比值急剧下降,水化学特征由硫酸镁亚型向氯化物型转化过渡.通过20～25℃晶间卤水L10和L20蒸发实验研究,确定了一里坪卤水蒸发路线、液固相组成、物相鉴定、水化学特征系数、离子行为等变化及成盐特征,并与25℃Na^+,K^+,Mg^(2+)//Cl^-,SO_4^(2-)-H_2O五元体系介稳相图理论预测计算综合对比,二者吻合性比较好,整体相对误差能控制在5%范围内,利用相图理论计算能够很好地指导实际硫酸盐型卤水蒸发析盐.利用水化学特征系数KCl/MgCl_2、MgSO_4/MgCl_2,研究了25℃硫酸盐型盐湖卤水钾盐成盐特征,当变质系数MgSO_4/MgCl_2高于0.13时,卤水钾盐矿物析出的同时,伴随有泻利盐共同析出.利用含Li^+、borate、Mg^(2+)水盐体系相图,研究一里坪老卤水深度蒸发中Li、B的行为,理论预测计算结果,剩余老卤水Mg^(2+)/Li^+比值降至27时,卤水中的Li、B始终以离子形式赋存于卤水中继续富集,此时卤水的累积成卤率仅为2.50%～3.20%,须引入新的工艺技术进行Li、B提取.研究结果为极高镁锂比、高镁硼比的硫酸盐型卤水的综合开发利用提供了理论支持.

关键词：水化学年温差变质系数钾盐成盐 Li、B行为硫酸盐型卤水一里坪盐湖

High Fe‑Loading Single‑Atom Catalyst Boosts ROS Production by Density Effect for Efficient Antibacterial Therapy

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Nano-Micro Letters 2025年第2期17卷 187-203页

作者： Si Chen Fang Huang lijie Mao Zhimin Zhang Han Lin Qixin Yan Xiangyu Lu Jianlin shi Department of Cardiology Shanghai Tenth People’s HospitalSchool of MedicineTongji UniversityShanghai 200092People’s Republic of China Shanghai Institute of Ceramics Chinese Academy of SciencesShanghai 200050People’s Republic of China Shanghai Frontiers Science Center of Nanocatalytic Medicine School of MedicineTongji UniversityShanghai 200092People’s Republic of China

The current single-atom catalysts(SACs)for medicine still suffer from the limited active site ***,we develop a synthetic method capable of increasing both the metal loading and mass-specific activity of SACs by exchanging zinc with *** constructed iron SACs(h^(3)-FNC)with a high metal loading of 6.27 wt%and an optimized adjacent Fe distance of~4 A exhibit excellent oxidase-like catalytic performance without significant activity decay after being stored for six months and promising antibacterial ***,a“density effect”has been found at a high-enough metal doping amount,at which individual active sites become close enough to interact with each other and alter the electronic structure,resulting in significantly boosted intrinsic activity of single-atomic iron sites in h^(3)-FNCs by 2.3 times compared to low-and medium-loading ***,the overall catalytic activity of h^(3)-FNC is highly improved,with mass activity and metal mass-specific activity that are,respectively,66 and 315 times higher than those of commercial Pt/*** addition,h^(3)-FNCs demonstrate efficiently enhanced capability in catalyzing oxygen reduction into superoxide anion(O_(2)·^(−))and glutathione(GSH)*** in vitro and in vivo assays demonstrate the superior antibacterial efficacy of h^(3)-FNCs in promoting wound *** work presents an intriguing activity-enhancement effect in catalysts and exhibits impressive therapeutic efficacy in combating bacterial infections.

关键词： Nanocatalytic medicine Single-atom catalysts Reactive oxygen species(ROS) High metal loading Oxidase catalysis

A novel user-friendly rare allele of barley host factor gene eIF4E confers resistance to multiple isolates of BaYMV/BaMMV

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A novel user-friendly rare allele of barley host factor gene...

Highly luminescent and stable lead-free cesium copper halide perovskite powders for UV-pumped phosphor-converted light-emitting diodes

2018全国植物生物学大会

作者： lijie shi Congcong Jiang Qiang He Jun Liu Jing Zhang Ping Yang Institute of Crop Sciences Chinese Academy of Agricultural Sciences (CAAS)

The soil-borne yellow mosaic virus disease is a major threat to winter barley(***) production in Europe and East ***,the exploration of resistant germplasms or casual genes used for barley breeding was rather limited in relative to the rapid diversification of viral *** we identified an Iranian barley landrace ’HOR3298’,which represented complete resistance to the bymovirus disease of *** contrast to the resistance donor rym4 and rym5,which served as predominant source in breeding over decades,this genotype showed broad-spectrum resistance to multiple isolates of BaYMV/BaMMV in several years and locations in Germany and *** employment of bulked segregant RNA sequencing(BSR-seq),test for allelism and haplotype analysis,a unique resistance gene in ’HOR3298’ was mapped coincident with the host factor eukaryotic translation initiation factor 4 E(eIF4 E,causal gene of rym4/5).The eIF4 EHOR3298 allele encoded for a novel haplotype that contained a G-to-A nucleotide mutation(565’-bp) in the coding *** easily handled marker was developed based on the exclusive rare variation(1/1907),providing precise selection of this ***,this work provided a novel reliable resistance source and the feasible marker assisted selection assay that can be applied in breeding for the barley yellow mosaic virus disease resistance.

关键词： Virus resistance eIF4E rym4/rym5 BaYMV/BaMMV resistance breeding

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Photonics Research 2020年第6期8卷 768-775页

作者： LINGLING XIE BINGKUN CHEN FA ZHANG ZHENG ZHAO XINXIN WANG lijie shi YUE LIU LINGLING HUANG RUIBIN LIU BINGSUO ZOU YONGTIAN WANG Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems School of PhysicsBejing Institute of TechnologyBeijing 100081China Bejjing Engineering Research Center of Mixed Reality and Advanced Display School of Optics and PhotonicsBejjing Institute of Technology Bejjing 100081China AICFVE of Bejing Film AcademyBejing 100088China

Lead halide perovskites have drawn extensive attention over recent decades owing to their outstanding photo-electric ***,their toxicity and instability are big issues that need to be solved for further ***,we adopt a facile dry ball milling method to synthesize lead-free Cs3Cu2X5(X=I,CI)perovskites with photoluminescence(PL)quantum yield up to 60%.The optical features including broad emission spectrum,large Stokes shift,and long PL lifetime can be attributed to self-trapped exciton *** as-synthesized blue emissive Cs3Cu2I5 and green emissive Cs3Cu2Cl5 lead-free perovskite powders have good thermal stability and ***,UV-pumped phosphor-converted light-emitting diodes were obtained by using Cs3Cu2I5 and Cs3Cu2Cl5 as phosphors.

关键词： stability. perovskite converted

A novel flexible nerve guidance conduit promotes nerve regeneration while providing excellent mechanical properties

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Neural Regeneration Research 2025年第7期20卷 2084-2094页

作者： Tong Li Quhan Cheng Jingai Zhang Boxin Liu Yu shi Haoxue Wang lijie Huang Su Zhang Ruixin Zhang Song Wang Guangxu Lu Peifu Tang Zhongyang Liu Kai Wang Department of Orthopedics the Fourth Medical Center of Chinese PLA General HospitalBeijingChina Department of Training and Sports Medicine Characteristic Medical Center of Chinese People’s Armed Police ForceTianjinChina Medical School of Chinese PLA BeijingChina Key Laboratory of Bioactive Materials for the Ministry of Education College of Life SciencesNankai UniversityTianjinChina Department of Orthopedics Tianjin HospitalTianjinChina Department of Rehabilitation Medicine Er Quan Hospital of PAPWuxiJiangsu ProvinceChina

Autografting is the gold standard for surgical repair of nerve defects>5 mm in length;however,autografting is associated with potential complications at the nerve donor *** an alternative,nerve guidance conduits may be *** ideal conduit should be flexible,resistant to kinks and lumen collapse,and provide physical cues to guide nerve *** designed a novel flexible conduit using electrospinning technology to create fibers on the innermost surface of the nerve guidance conduit and employed melt spinning to align ***,we prepared disordered electrospun fibers outside the aligned fibers and helical melt-spun fibers on the outer wall of the electrospun fiber *** presence of aligned fibers on the inner surface can promote the extension of nerve cells along the *** helical melt-spun fibers on the outer surface can enhance resistance to kinking and compression and provide *** novel conduit promoted nerve regeneration and functional recovery in a rat sciatic nerve defect model,suggesting that it has potential for clinical use in human nerve injuries.

关键词： aligned fibers anti-kinking helical fibers nerve guidance conduit nerve regeneration peripheral nerve injury topological guidance