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Nitrate reductase activity in high-mountain plants:a test across species,growth form and habitat type

Journal of Plant Ecology 2019年第3期12卷 519-530页

作者： Adam Rajsz Bronisław Wojtuń lucyna mr.z Ludwik Żołnierz Alexander J.Kempers Department of Ecology Biogeochemistry and Environmental ProtectionWrocław Universityul.Kanonia 6/850-328 WrocławPoland Department of Botany and Plant Ecology University of Environmental and Life Sciences.Pl.Grunwaldzki 24a50-363 WrocławPoland Radboud University Nijmegen Institute for Water and Wetland ResearchDepartment of Environmental ScienceHeyendaalseweg 1356525 AJ NijmegenThe Netherlands

Aims For many terrestrial plants,nitrate is the most important form of available soil nitrogen for ***,many plant species,which grow on acidic,ammonium-dominated soils,exhibit a con-stantly low level of nitrate reductase activity(NRA).Little is known about NRA in high-mountain vascular plants in similar *** tested the hypothesis that high-mountain vascular plants in acidic and ammonium-dominated habitats have low levels of *** Twenty-six plant species of the families Asteraceae,Ericaceae,Poaceae,Polygonaceae,Salicaceae,Pinaceae,Ranunculaceae,Woodsiaceae,Cyperaceae,Juncaceae,Rosaceae and Urticaceae representing different growth forms were investigated in seven native and anthropogenic habitats of subalpine and alpine belts of the Karkonosze(Hercynian middle-mountains,Central Europe),with respect to leaf NRA and mineral nitrogen forms in *** was measured by an in vivo assay for the first time directly in the field using portable water *** Findings An NRA study of vascular plants from high mountains is presented for the first time,and most of the studied subalpine and alpine species were subjected to field measurements for the first time *** among species,families,growth forms and habitats for NRA were *** differences reflected mainly the taxonomical position and in part ecological *** analysis confirmed that variance component showed that enzyme activities were mostly explained by plant species and ***,the subalpine and alpine species from their native habitats are characterized by very low and low ability for nitrate *** also compared NRA with Ellenberg’s N val-ues for the studied *** a regression equation,N values of some species were calculated for the first time and corrected for the others.

关键词： nitrate reductase subalpine and alpine habitats Ellenberg's N values the Karkonosze Hercynian middle-mountains

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Influence of Non-Uniform Temperature Distribution on Metallic Charge Length on Energy and Force Parameters During Groove-Rolling

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Journal of Iron and Steel Research International 2012年第8期19卷 17-24页

作者： mr.z Sebastian Czestochowa University of Technology

Change in the temperature of band over its length, associated with the stock being non-uniformly heated in the furnace, influences the variations in the magnitudes of energy-force parameters. Using the FEM (Finite Element Model) programs for the computation of the values of the energy-force parameters can take into account the distribution of temperature over the band length. The mathematical model of the computer program Forge2008 was used to theoretically examine the energy-force parameters and plastic metal flow in the roughing stands of the continuous rolling mill. The results of experimental investigation of influence of the non-uniform temperature distribution were presented on the metallic charge length on the energy and force parameters and dimensions of the band during round bars rolling. Thermovision monitoring energy and force parameters monitoring were carried out in continuous rolling mill D350 in one of the Polish industrial plants. On the basis of obtained results, it could be stated that non-uniform distribution of temperatures along the charge length causes local increase of energy and force parameters values and also such distribution affects the local increase of the width of rolled band. The rolling process of charge with non-uniform distribution of temperature could lead to exceeding required dimensional tolerances of the final products.

关键词： groove-rolling energy parameter force parameter numerical technique FEM

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Ability for Self-Pelletization of Iron Ores and Magnetite Concentrates

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Journal of Iron and Steel Research International 2011年第6期18卷 1-7页

作者： Francik Przemysaw Jan mr.z Czestochowa University of Technology Czestochowa 42-200Poland

A procedure for evaluating the susceptibility of raw materials for the process of sintering of iron ore mixes is presented. The procedure relies on the evaluation of the amount and quality of the finest grain fraction. The method is based on determination of particular grain fractions. For the grain less than 0.15 mm, the determination of the a- mount is performed using an IPS （Infrared Particles Sizer） grain size analyzer and for the grain larger than 0.15 ram, the fraction is determined using the （wet and dry） screening methods. This allows for quantity assessment of the quality of material in terms of its susceptibility to self-pelletizing by calculating Total Ability for SelPPelletizing （TASP） index fT. The presented method, in combination with the grain size and chemical analyses, can serve for evaluation of suitability of raw material and mixes for the sintering process. Furthermore, the TASP index for 10 types of iron ores and concentrates was determined. The usability of the TASP index was verified by determination of its impact on yield of sintering process both in laboratory and in industry scale.

关键词： iron ore concentrate grain composition pelletization process sintering process productivity

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Effect of rolling friction on wall pressure,discharge velocity and outflow of granular material from a flat-bottomed bin

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Particuology 2012年第6期10卷 672-682页

作者： R.Baleviius I.Sielamowicz z.mr.z R.Kaianauskas Department of Reinforced Concrete and Masonry Structures Vilnius Gediminas Technical Universityav.Sauletekio 11LT-10223 VilniusLithuania Composite Silo Systems ORCHIDEA st.J.Matejki 815-196 BialystokPoland Institute of Fundamental Technological Research Polish Academy of Sciencesst.Pawin'skiego 5b02-106 WarsawPoland Institute of Mechanics Vilnius Gediminas Technical Universityst.J.Basanaviiaus.28LT-10223 VilniusLithuania

The present paper provides both experimental and DEM analyses of the filling and discharge of pea grains from a 3D flat-bottomed bin. In the DEM model, the fixed mean values of the experimentally determined single particle data, such as the particle density, Young＇s modulus, Poisson＇s ratio as well as the sliding and rolling friction coefficients were incorporated to analyse their effects on the macroscale indicators, such as the wall pressure, discharge velocities and material outflow parameters. The effect of rolling friction was studied based on the experimentally measured single particle rolling friction coefficient. This analysis is aimed at the quantitative prediction of flow parameters as related to the identification of material parameters.

关键词： Visco-elastic granular materia Discrete element method Rolling friction Wall pressure Material velocityOutflow mass Outflow rateBiosystems Pea grains

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如果不想

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美文（青春写作） 2012年第9期 30-31页

作者： mr.z

我们总是在想，今天我要在哪里，和什么样的人，做什么样的事，期待一个如何的结果，或者只是为这个结果做着准备。

关键词：中学生作文语文学习阅读知识

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卖点繁多经典主打——七月夏季卖场分析

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中国服饰 2010年第7期 50-53页

作者：刘岚 mr.z

夏季服装卖场色彩纷呈,抓住了流行点就等于抓住了市场,但是盲目的跟风也会导致产品价值下降。今夏复古航海风吹来,不仅条纹图案的内衣增加了,就连一些儿童的服装也运用了这个元素,大有将航海风进行到底的架势。但是,精明的商家并没有单... 详细信息

夏季服装卖场色彩纷呈,抓住了流行点就等于抓住了市场,但是盲目的跟风也会导致产品价值下降。今夏复古航海风吹来,不仅条纹图案的内衣增加了,就连一些儿童的服装也运用了这个元素,大有将航海风进行到底的架势。但是,精明的商家并没有单纯的盲目追风,而是在秉承自有品牌风格的基础之上加了些航海元素,反倒在一片航海的汪洋中脱颖而出。

关键词：航海夏季服装儿童卖场内衣设计师经典跟风元素童装

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女子专营店盛装出市——六月卖场亮点

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中国服饰 2010年第6期 54-57页

作者：刘岚 mr.z

特色经营一直是百货业不断求新求变的突破口,新世界百货颠覆传统观念,打造出一种全新的女子店经营模式,个性化经营意识不仅拓展了国内百货业的业态形式,更是将集合概念贯穿于各种特色经营之中,如在国内首次全部启用男性店员、首次在零... 详细信息

特色经营一直是百货业不断求新求变的突破口,新世界百货颠覆传统观念,打造出一种全新的女子店经营模式,个性化经营意识不仅拓展了国内百货业的业态形式,更是将集合概念贯穿于各种特色经营之中,如在国内首次全部启用男性店员、首次在零售业中实现全部专营女性消费品,相信这种新的业态形式对传统百货将是一个新的冲击。本期,记者带您先睹为快,看看这家女子店中的部分特色经营。

关键词：特色经营女子设计师女性消费品牌亮点百货业服装风格业态新世界

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店铺销售“破冰”技巧

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中国服饰 2010年第6期 58-61页

作者：刘岚韩晶 mr.z

店铺销售破冰是指销售人员在店铺迎宾服务环节之后,通过一定的沟通方法,打破与顾客之间的陌生感,顺利建立信任关系,掌握顾客需求的基础信息,从而达到为顾客提供准确推荐服务的过程。调查证明,大部分顾客不喜欢缺少铺垫的"直接推销行为"... 详细信息

店铺销售破冰是指销售人员在店铺迎宾服务环节之后,通过一定的沟通方法,打破与顾客之间的陌生感,顺利建立信任关系,掌握顾客需求的基础信息,从而达到为顾客提供准确推荐服务的过程。调查证明,大部分顾客不喜欢缺少铺垫的"直接推销行为",而拥有傲人销售业绩的销售员工,往往善于在销售之前,通过破冰与顾客成为朋友。本期,我们通过对几家店员的采访来共同探讨如何运用这个"破冰"技巧。

关键词：吸引顾客销售业绩破冰技巧顾客需求销售人员店员导购员中国服饰陌生感

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Crystal Structure of 5 ( l Menthyloxy) 3 Chloro 4 Pyrrolidinyl 2(5H) Furanone

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Chinese Journal of Structural Chemistry 1999年第2期18卷 35-38页

作者： Geng, z Chen, QH Capital Normal Univ Dept Chem Beijing 100037 Peoples R China Beijing Normal Univ Dept Chem Beijing 100875 Peoples R China

The molecular structure of the title compound 5 ( l menthyloxy) 3 chloro 4 pyrrolidinyl 2(5H) furanone, C 18 H 28 ClNO 3(Ⅰ), has been determined by X ray diffraction at 296(1)K. The crystal is monoclinic with space group P2 1, a=9 457(3), b=10.413(3), c=9.525(2) , β=95.19(2)°, V=934(1)  3, z=2, M r=341.88, D x =1.22 g/cm 3, μ =2.15 cm -1 , F(000)=368. The final R factor is 0 059, and R w is 0.065 for 1020 observed reflections with I≥3σ(I) . The absolute configuration at C(14) of the acetal carbon was proved to be S , taking into account the known configuration of 1R, 2S, 5R menthyl moiety. There are three rings in the molecule of this compound: the furanone ring, the pyrrolidine ring and the mentholoxy group ring. The franone ring is connected with the pyrrolidine ring and the mentholoxy ring by N atom and μ 2 O bridge atom respectively.

关键词： crystal structure absolute configuration Michael addition elimination reaction

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应用钆布醇的稳态mr血管成像评估股骨头缺血性坏死病人的血供变化

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国际医学放射学杂志 2024年第1期 129-130页

作者： z.H.Liao C.Liu B.Wu C.Ma B.Ming Q.zhou 陈莉

摘要目的探讨应用钆布醇行稳态（SS）mr血管成像（mrA）评价股骨头坏死（ONFH）血供变化的可行性。方法前瞻性纳入2021年12月—2022年5月招募的参与者。比较

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