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基于mODIS数据的青藏高原积雪时空分布特征分析

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国土资源遥感 2017年第2期29卷 117-124页

作者：除多达娃拉巴卓玛徐维新张娟中国气象局成都高原气象研究所拉萨分部拉萨850000 西藏高原大气环境科学研究所拉萨850000 西藏自治区气象局气象服务中心拉萨850000 青海省气象科学研究所西宁810001

利用2000―2014年间获取的mOD10A2积雪产品,结合数字高程模型数据,借助GIS空间分析方法,以积雪覆盖率(snow cover fraction,SCF)为指标,定量分析了青藏高原积雪的整体空间分布特征及高程、坡度和坡向等地形因素对高原积雪时空分布的影... 详细信息

利用2000―2014年间获取的mOD10A2积雪产品,结合数字高程模型数据,借助GIS空间分析方法,以积雪覆盖率(snow cover fraction,SCF)为指标,定量分析了青藏高原积雪的整体空间分布特征及高程、坡度和坡向等地形因素对高原积雪时空分布的影响。主要结论有:(1)青藏高原积雪覆盖具有高原周围和中部高大山脉积雪丰富、SCF高,内陆盆地和谷地积雪少、SCF低的特点;(2)海拔越高,SCF越高,积雪持续时间越长,年内变化越稳定;(3)海拔4 000 m以下年内积雪覆盖呈单峰型分布特点,海拔4 000 m以上则为双峰型;(4)SCF最低值在海拔6 000 m以下出现在夏季,而在海拔6 000 m以上则出现在冬季;(5)SCF在不同坡向中,北坡向最高,南坡向最低,东坡和西坡向居中。

关键词：积雪覆盖率(SCF), 时空分布, mODIS, 地形, 青藏高原

雷贝拉唑对非甾体抗炎药诱导小肠损伤的保护作用及可能机制研究

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中国现代医学杂志 2015年第20期25卷 1-6页

作者：袁宇红于涛钟娃陈其奎中山大学孙逸仙纪念医院广东广州510120

目的探讨质子泵抑制剂（PPIs）药物雷贝拉唑对非甾体抗炎药（NISADs）吲哚美辛诱导小肠损伤的保护作用及可能机制。方法检测PPIs雷贝拉唑对吲哚美辛诱导小肠损伤的保护作用及与HO-1的相关性。给予小鼠口服吲哚美辛10 mg/kg,24 h后处死... 详细信息

目的探讨质子泵抑制剂（PPIs）药物雷贝拉唑对非甾体抗炎药（NISADs）吲哚美辛诱导小肠损伤的保护作用及可能机制。方法检测PPIs雷贝拉唑对吲哚美辛诱导小肠损伤的保护作用及与HO-1的相关性。给予小鼠口服吲哚美辛10 mg/kg,24 h后处死。在给予吲哚美辛前30 min,口服雷贝拉唑30~100 mg/kg和奥美拉唑30~100 mg/kg;在给予吲哚美辛或雷贝拉唑前10 min,肌内注射HO-1抑制剂锡-原卟啉（Sn PP）30 mg/kg。结果吲哚美辛引起小肠出血性损伤,侵袭性肠道杆菌数量增加,诱导型一氧化氮合酶（i NOS）表达和髓过氧化物酶（mPO）活性增加。雷贝拉唑以剂量依赖性保护吲哚美辛引起的肠损伤,并且mPO活性上升受到抑制,而奥美拉唑无该作用。预处理Sn PP能够加重吲哚美辛引起的小肠损伤,并拮抗雷贝拉唑的保护作用。结论雷贝拉唑能够保护吲哚美辛诱导的小肠损伤,并与雷贝拉唑通过上调黏膜中HO-1/CO的表达而抑制i NOS表达。

关键词：雷贝拉唑非甾体类消炎药小肠损伤

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高地压矿井首采工作面矿压规律实测研究

中国煤炭 2012年第2期38卷 65-69页

作者：李想马洼李红友苏桂虎山东鲁能菏泽煤电公司郭屯煤矿山东省郓城县274700

郭屯煤矿属于高地压矿井,且首采1302综采工作面具有冲击地压现象。为了研究高地压条件下矿井首采面的矿压规律,对其矿压显现规律和冲击地压现象进行监测并加以分析,以便评价冲击地压条件下的支架适用性并提出有效的防治冲击地压措施。... 详细信息

郭屯煤矿属于高地压矿井,且首采1302综采工作面具有冲击地压现象。为了研究高地压条件下矿井首采面的矿压规律,对其矿压显现规律和冲击地压现象进行监测并加以分析,以便评价冲击地压条件下的支架适用性并提出有效的防治冲击地压措施。经过现场实测分析得出:工作面初次来压步距48.5m,周期来压步距24.5m,并且在开采1302首采工作面时,工作面内发生冲击地压的可能性较小。

关键词：冲击地压首采面矿压显现支架工作阻力

ROOT EXUDATES FROm CANOLA EXHIBIT BIOLOGICAL NITRIFICATION INHIBITION AND ARE EFFECTIVE IN INHIBITING AmmONIA OXIDATION IN SOIL

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Frontiers of Agricultural Science and Engineering 2022年第2期9卷 177-186页

作者： Cathryn A.O'SULLIVAN Elliott G.DUNCAN margaret m.ROPER Alan E.RICHARDSON John A.KIRKEGAARD mark B.PEOPLES CSIRO Agriculture&Food 306 Carmody RdSt LuciaQld 4067Australia CSIRO Agriculture&Food Private Bag 5WembleyWA 6913Australia mBS Environmental 4 Cook StreetWest PerthWA 6005Australia CSIRO Agriculture&Food GPO Box 1700CanberraACT 2601Australia

A range of plant species produce root exudates that inhibit ammonia-oxidizing *** biological nitrification inhibition(BNI)capacity can decrease N loss and increase N uptake from the *** study sought evidence for the existence and magnitude of BNI capacity in canola(Brassica napus).Seedlings of three canola cultivars,Brachiaria humidicola(BNI positive)and wheat(Triticum aestivum)were grown in a hydroponic *** exudates were collected and their inhibition of the ammonia oxidizing bacterium,Nitrosospira multiformis,was *** pot experiments were used to test the inhibition of native nitrifying communities in *** exudates from canola significantly reduced nitrification rates of both *** cultures and native soil microbial *** level of nitrification inhibition across the three cultivars was similar to the well-studied high-BNI species *** capacity of canola may have implications for the N dynamics in farming systems and the N uptake efficiency of crops in rotational farming *** reducing nitrification rates canola crops may decrease N losses,increase plant N uptake and encourage microbial N immobilization and subsequently increase the pool of organic N that is available for mineralization during the following cereal crops.

关键词： ammonia oxidizing microorganisms biological nitrification inhibition farming rotations nitrogen cycling nitrogen use efficiency

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据烷基喹啉的量化和物化参数预测其保留指数

计算机与应用化学 2007年第9期24卷 1217-1222页

作者：朱秀华王炜穆军王连峰牛娃大连交通大学环境与化学工程学院辽宁大连116028 大连交通大学软件学院辽宁大连116028

以色谱热力学理论为基础,选择影响化合物色谱保留的分子结构和性质描述符号,共选出7个反映分子整体性质的量化、物化参数,即,分子极化率(α),分子偶极矩(μ),分子总的核-核排斥能(CCR),最高占据分子轨道能(E_(homo)),整个分子最正的原... 详细信息

以色谱热力学理论为基础,选择影响化合物色谱保留的分子结构和性质描述符号,共选出7个反映分子整体性质的量化、物化参数,即,分子极化率(α),分子偶极矩(μ),分子总的核-核排斥能(CCR),最高占据分子轨道能(E_(homo)),整个分子最正的原子净电荷(q^+),Connolly溶剂已占体积(SEV:Connolly Solvent-Excluded Volume),沸点(Bp)。采用mOPAC2000 V1.3半经验分子轨道化学计算软件包,Pm3哈密顿函数算得烷基喹啉的量化及物化参数,通过有进有出的逐步回归分析法,建立在OV-101,Ucon LB-550-X和PEG-20m固定相上烷基喹啉气相色谱的QSRR方程,经预测组的预测结果验证了模型的稳定性和有效性,表明在不同极性固定相上无论是训练组还是预测组,其烷基喹啉保留指数预测值与其实测值之间,均具有较好的线性关系,回归相关系数R^2值均大于0.96。

关键词：烷基喹啉保留指数定量结构-保留相关

Vertically aligned Ni/NiO nanocomposites with abundant oxygen deficient hetero-interfaces for enhanced overall water splitting

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Science China Chemistry 2022年第10期65卷 1885-1894页

作者： Hongxia wang meiyan Cui Gaoliang Fu Jiaye Zhang Xingyu Ding Irene Azaceta matthew Bugnet Demie m.Kepaptsoglou Vlado K.Lazarov Victor Ade la Peña O’Shea Freddy E.Oropeza Kelvin H.L.Zhang State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Henan Provincial Key Laboratory of Nanocomposites and Applications Institute of Nanostructured Functional MaterialsHuanghe Science and Technology CollegeZhengzhou 450006China Department of Physics University of YorkHeslingtonYorkYO105DDUK SuperSTEm Laboratory SciTech Daresbury CampusDaresbury WA44ADUK School of Chemical and Process Engineering Univeristy of LeedsLeeds LS29JTUK Univ Lyon CNRSINSA LyonUCBLMATEISUMR 551069621 VilleurbanneFrance Photoactivated Processes Unit IMDEA Energy InstituteParque Tecnológico de MóstolesAvda.Ramón de la Sagra 328935 MóstolesMadridSpain

The design of heterostructured transition metal-based electrocatalysts with controlled composition and interfaces is key to increasing the efficiency of the water electrolysis and the elucidation of reaction *** this work,we report the synthesis of well-controlled vertically aligned Ni/NiO nanocomposites consisting of Ni nanoclusters embedded in NiO,which result in highly efficient electrocatalysts for overall water *** show that such a high catalytic efficiency toward both the hydrogen evolution reaction(HER)and the oxygen evolution reaction(OER)originates from a synergetic effect at Ni/NiO interfaces that significantly reduces the energy barrier for water dissociation,and favours the formation of reactive H*intermediates on the Ni side of the interface,and OH_(ads) on the NiO side of the interface.A study of water chemisorption based on near-ambient pressure photoelectron spectroscopy indicates that the abundant hetero-interfaces in Ni/NiO nanocomposite promote the dissociation of water with a three-fold increase in the surface concentration of OH_(ads) compared with pure *** functional theory calculations indicate that Ni/NiO interface leads to the reduction of the water dissociation energy barrier due to a high concentration of oxygen vacancies at NiO side of the interface,whereas the formation of highly active metallic Ni sites with an optimal value of Gibbs free energy of H*(ΔG_(H*)=−0.16 eV)owes to a favourable adjustment of the electron energetics at the interface,thus accelerating the overall electrochemical water splitting.

关键词： water splitting hydrogen evolution reaction electronic structure heterostructure vertically aligned nanocomposites

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羊毛低温染色增深剂的合成及其应用

纺织高校基础科学学报 2015年第4期28卷 490-494页

作者：余彤王雪燕西安工程大学纺织与材料学院陕西西安710048

以自制阳离子交联剂WLS和明胶蛋白为原料,优化出一种有利于提高高浓度(6%owf)兰纳素CE黑染料上染羊毛纤维的阳离子蛋白类增深剂的合成工艺条件,即干明胶与WLS的质量比为1∶16,氢氧化钠与WLS的质量比为1∶100,反应温度60℃,反应时间4h.... 详细信息

以自制阳离子交联剂WLS和明胶蛋白为原料,优化出一种有利于提高高浓度(6%owf)兰纳素CE黑染料上染羊毛纤维的阳离子蛋白类增深剂的合成工艺条件,即干明胶与WLS的质量比为1∶16,氢氧化钠与WLS的质量比为1∶100,反应温度60℃,反应时间4h.并对该助剂的结构和性能进行分析.结果表明,该助剂能够改变羊毛纤维表面性能,促进染料的吸附上染,实现羊毛纤维的低温深浓染色,是一种性能优良的亲羊毛纤维型染色增深剂.

关键词：阳离子明胶蛋白助剂羊毛织物低温染色兰纳素CE黑染料增深剂

Thismia tentaculata(Burmanniaceae tribe Thismieae) from Hong Kong:first record of the genus and tribe from continental China

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Journal of Systematics and Evolution 2009年第6期47卷 605-607页

作者： George W.C.HO Shek Shing mAR Richard m.K.SAUNDERS 812 Fu Yuen HouseChuk Yuen South EstateHong KongChina Ying wa College Hong KongChina Division of Ecology and Biodiversity School of Biological SciencesThe University of Hong Kong

Populations of Thismia tentaculata(Burmanniaceae tribe Thismieae) are described and illustrated from Tai mo Shan in Hong Kong,southern *** represents the first report of the genus and tribe from continental China.

关键词： Burmanniaceae Hong Kong new record Thismiaceae Thismia tentaculata

managing airport stormwater containing deicers： challenges and opportunities

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Frontiers of Structural and Civil Engineering 2017年第1期11卷 35-46页

作者： Xianming SHI Stephen m. QUILTY Thomas LONG Anand JAYAKARAN Laura FAY Gang XU Smart & Green Infrastructure Group Department of Civil & Environmental Engineering Washington State University Pullman WA 99164-2910 USA SmQ Airport Services 26757 Haverhill Drive Lutz FL 33559-8509 USA Kent State University 1400 Lefton Esplanade Kent OH 44242 USA washington Stormwater Center Washington State University Puyallup WA 98371 USA Western Transportation Institute Montana State University Bozeman MT 59717 USA

Stormwater runoff at airports is a significant and costly issue, especially for the stormwater laden with deicing contaminants of high Biochemical Oxygen Demand （BOD） and aquatic toxicity. To reduce the loading of deicing constituents in stormwater and to manage the increasing pressure of tightening regulations, identifying fate and transport and evaluating environmental risks of deicing stormwater are of critical importance. In this review, the regulatory development of airport deicing stormwater management was first discussed, along with the milestone Airport Cooperative Research Program （ACRP） Report 14 publication. The deicer usage and fugitive losses can be reduced and the amount of deicer collected can be increased by having a better understanding of the fate and transport of deicing constituents in stormwater. As such, an overview and evaluation of the constituents of concern in deicers were provided to support the assessment of environmental impacts and mitigation recommendations. The state of knowledge of airport deicing stormwater management was then reviewed, which needs to be synthesized into a national guidance document. A guidebook and a decision tool for airports were proposed to adopt specific practical stormwater management strategies while balancing their priorities in environmental, economic, and social values against operational constraints. These challenges pose great opportunities to improve the current practices of airport deicing stormwater management.

关键词： airport deicer stormwater guidebook decision tool