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不同抗旱性的春小麦品种的生长分析

麦类作物学报 1985年第4期 25-26页

作者： J.M.Clarke t.Fredtownley-smith 杨竹平

在研究作物及其品种对环境条件的反应中,已广泛使用了生长分析,以鉴定生长在形成经济产量诸重要因素中的作用。在育种方案中,生长分析对鉴别植物重要发育阶段,或在特定环境中鉴别与高产有关的因素,可能是有用的。但是在过去的许多研究中... 详细信息

在研究作物及其品种对环境条件的反应中,已广泛使用了生长分析,以鉴定生长在形成经济产量诸重要因素中的作用。在育种方案中,生长分析对鉴别植物重要发育阶段,或在特定环境中鉴别与高产有关的因素,可能是有用的。但是在过去的许多研究中,对于这方面的结论很不一致。如 simpson(1968)认为,小麦产量和旗叶节以上的光合组织的面积和

关键词：抗旱性干旱条件产量生长分析小麦基因型

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无元素氯（ECF）漂白技术的新进展

无元素氯（ECF）漂白技术的新进展

商品浆、主要纸种和二次纤维的供需及全球趋势——过去与未来

1995中国造纸学会学术报告会

作者： Kenneth t．Hood Jorg Willems 安国兴美国P．E．simpson造纸公司芬兰Valmet Automation

＜正＞前言在过去10年间,造纸工作者对纸浆含氯漂剂所产生的大分子含氯有机化合物造成的影响是有新警惕的,从而大大地改变了漂白技术的战略决策。今后,元素氯漂白将会日趋淘汰,而硫酸盐浆无元素氯（ECF）漂白的概念已在美国,甚至全球造...

＜正＞前言在过去10年间,造纸工作者对纸浆含氯漂剂所产生的大分子含氯有机化合物造成的影响是有新警惕的,从而大大地改变了漂白技术的战略决策。今后,元素氯漂白将会日趋淘汰,而硫酸盐浆无元素氯（ECF）漂白的概念已在美国,甚至全球造纸界得以普及。在制定环保法规已成为全球性问题的当今,美国即将制订一系列有关限制排放某些含氯有机化合物的环保规定。这种情况将会使硫酸盐浆漂白日趋广泛采用无元素氯漂白技术,这个称为“帘法规”（Cluster Rules）的推出又将会激发造纸工业广泛地进行工厂

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商品浆、主要纸种和二次纤维的供需及全球趋势——过去与未来

Exploring trees Diversity and Ecological Value of Mountain Forests in the Blue Nile Region of Sudan

1995中国造纸学会学术报告会

作者： Kenneth t．Hood Jorg Willems 安碧城美国simpson Paper Co．芬兰Valmet Aulomsation

＜正＞前言“前车之覆,后车之诫”。在美国,人们经常用这句话。这句话很可能来源于中国一句相似的谚语。同样,过份拘泥于过去,则又会陷入前景莫测的困境。近几年来,商品浆和主要纸种的价格低落的趋势,使得北美洲和其它地区,在10年期间...

＜正＞前言“前车之覆,后车之诫”。在美国,人们经常用这句话。这句话很可能来源于中国一句相似的谚语。同样,过份拘泥于过去,则又会陷入前景莫测的困境。近几年来,商品浆和主要纸种的价格低落的趋势,使得北美洲和其它地区,在10年期间大放慢了浆厂的新建和扩建,而在90年代以前市场欣欣向荣,促进造纸行业资金方面的周而复转。回顾过去,展望未来,要更多地看到指日可望的繁荣前景。这样做也许会有助于更

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Open Journal of Ecology 2024年第3期14卷 245-256页

作者： Dafa-Alla M. Dafa-Alla Haytham H. Gibreel Ahmed A. H. Siddig Yousif E. Yagoub Hashim A. Abdelkarim Khatir H.t. Saeed Ahmed I. Abuelbashar Faculty of Forestry-Shambat University of Khartoum Khartoum Sudan Harvard Forest Harvard University Petersham MA USA Faculty of Forest Science and Wood technology University of Gezira Wad-Medani Sudan Department of Forestry and Range Sciences Faculty of Natural Resources and Environmental Studies Alsalam University Alfula Sudan Forest Research and Gum Arabic Centre Agricultural Research Corporation Khartoum-Soba Sudan

We carried out this research at Abu-Gaddaf Natural Forest Reserve (ANFR) which is located east of Blue Nile River, in Blue Nile State, Sudan. It aims at exploring tree composition assessing their diversity indices, and ecological importance values. For survey of types and estimation of density of tree species in the forest, we randomly distributed 97 circular sample plots (0.1 hectare (ha)). In each sample plot we identified all trees to the species level, recorded their frequencies and computed species diversity and importance value indices (IVI). A total of 13 tree species, which belong to 12 genera and nine families, were identified in the tree layer of the forest. Mean tree density in ANFR was 116 trees/ha, composed mainly of Boswellia papyrifera (Del.) Hochst. (48), followed by Combretum hartmannianu (19) and Lannea fruticosa (18). Fabaceae was the most common family followed by Combretaceae and Malvaceae. B. papyrifera Delile Hochst was the most abundant while Acacia seyal was the least abundant species. Species richness (R = 1.71), evenness (E = 0.69), dominance (0.24) indices and simpson’s Index of Diversity (D' = 0.76) suggest a moderate diversity, moderate numbers of individuals in each species and a moderate community stability. the research provides empirical results on diversity and ecological importance value of species, signifies the urging need to safeguard threatened species and to prioritize them for conservation, as well as the need to promote management of abundant species to provide multiple forest ecosystem services.

关键词： tree Species Diversity Dry-Land Forest Sudan

tWO EPISODES OF MONAZItE CRYStALLIZAtION DURING MEtAMORPHISM AND CRUStAL MELtING IN tHE EVERESt REGION OF tHE NEPALESE HIMALAYA

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地学前缘 2000年第S1期7卷 27-27页

作者： Robert L. simpson 1, Randall R. Parrish 2, Mike P. Searle 1, David J. Waters 1[Wt5,5”BX](1 Department of Earth Sciences, Oxford University, Parks Road, Oxford OX1 3PR, UK 2 NERC Isotope Geosciences Laboratory, Keyworth, Nottingham NG12 5GG, UK)

New monazite U\|Pb geochronological data from the Everest region suggest that 20～25Ma elapsed between the initial India—Asia collision and kyanite\|sillimanite grade metamorphism. Our results indicate a two\|phase metamorphic history, with peak Barrovian metamorphism at (32 2±0 4)Ma and a later high\|temperature, low\|pressure event (620℃, 400MPa) at (22 7±0 2)Ma.. Emplacement and crystallization of the Everest granite subsequently occurred at 20 5～21 3Ma. the monazite crystallization ages that differ by 10Ma are recorded in two structurally adjacent rocks of different lithology, which have the same post collisional p—t history.. Scanning electron microscopy reveals that the younger monazite is elaborately shaped and grew in close association with apatite at grain boundaries and triple junctions, suggesting that growth was stimulated by a change in the fluid regime. the older monazite is euhedral, is not associated with apatite, and is commonly armoured within silicate minerals. During the low\|pressure metamorphic event, the armouring protected the older monazites, and a lack of excess apatite in this sample prevented new growth. textural relationships suggest that apatite is one of the necessary monazite\|producing reactants, and spots within monazite that are rich in Ca, Fe, Al and Si suggest that allanite acted as a preexisting rare earth element host. We propose a simplified reaction for monazite crystallization based on this evidence.

关键词： monazite crystallization metamorphism crustal melting Everest region Nepalese Himalaya

Performance and calibration of quark/gluon-jet taggers using 140 fb^(-1) of pp collisions at √s=13 teV with the AtLAS detector

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Chinese Physics C 2024年第2期48卷 1-25页

作者： G. Aad B. Abbott K. Abeling N.J. Abicht S.H. Abidi A. Aboulhorma H. Abramowicz H. Abreu Y. Abulaiti B.S. Acharya C. Adam Bourdarios L. Adamczyk S.V. Addepalli M.J. Addison J. Adelman A. Adiguzel t. Adye A.A. Affolder Y. Afik M.N. Agaras J. Agarwala A. Aggarwal C. Agheorghiesei A. Ahmad F. Ahmadov W.S. Ahmed S. Ahuja X. Ai G. Aielli A. Aikot M. Ait tamlihat B. Aitbenchikh I. Aizenberg M. Akbiyik t.P.A. Åkesson A.V. Akimov D. Akiyama N.N. Akolkar K. Al Khoury G.L. Alberghi J. Albert P. Albicocco G.L. Albouy S. Alderweireldt M. Aleksa I.N. Aleksandrov C. Alexa t. Alexopoulos F. Alfonsi M. Algren M. Alhroob B. Ali H.M.J. Ali S. Ali S.W. Alibocus M. Aliev G. Alimonti W. Alkakhi C. Allaire B.M.M. Allbrooke J.F. Allen C.A. Allendes Flores P.P. Allport A. Aloisio F. Alonso C. Alpigiani M. Alvarez Estevez A. Alvarez Fernandez M. Alves Cardoso M.G. Alviggi M. Aly Y. Amaral Coutinho A. Ambler C. Amelung M. Amerl C.G. Ames D. Amidei S.P. Amor Dos Santos K.R. Amos V. Ananiev C. Anastopoulos t. Andeen J.K. Anders S.Y. Andrean A. Andreazza S. Angelidakis A. Angerami A.V. Anisenkov A. Annovi C. Antel M.t. Anthony E. Antipov M. Antonelli F. Anulli M. Aoki t. Aoki J.A. Aparisi Pozo M.A. Aparo L. Aperio Bella C. Appelt A. Apyan N. Aranzabal S.J. Arbiol Val C. Arcangeletti A.t.H. Arce E. Arena J-F. Arguin S. Argyropoulos J.-H. Arling O. Arnaez H. Arnold G. Artoni H. Asada K. Asai S. Asai N.A. Asbah J. Assahsah K. Assamagan R. Astalos S. Atashi R.J. Atkin M. Atkinson H. Atmani P.A. Atmasiddha K. Augsten S. Auricchio A.D. Auriol V.A. Austrup G. Avolio K. Axiotis G. Azuelos D. Babal H. Bachacou K. Bachas A. Bachiu F. Backman A. Badea P. Bagnaia M. Bahmani A.J. Bailey V.R. Bailey J.t. Baines L. Baines O.K. Baker E. Bakos D. Bakshi Gupta V. Balakrishnan R. Balasubramanian E.M. Baldin P. Balek E. Ballabene F. Balli L.M. Baltes W.K. Balunas J. Balz E. Banas M. Bandieramonte A. Bandyopadhyay S. Bansal L. Barak M. Barakat E.L. Barberio D. Barberis M. Barbero M.Z. Barel K.N. Barends t. Barillari M-S. Barisits t. Barklow P. Baron D.A. Baron Mo the AtLAS Collaboration

the identification of jets originating from quarks and gluons,often referred to as quark/gluon tagging,plays an important role in various analyses performed at the Large Hadron Collider,as Standard Model measurements and searches for new particles decaying to quarks often rely on suppressing a large gluon-induced *** paper describes the measurement of the efficiencies of quark/gluon taggers developed within the AtLAS Collaboration,using √s=13 teV proton–proton collision data with an integrated luminosity of 140 fb^(-1) collected by the AtLAS *** taggers with high performances in rejecting jets from gluon over jets from quarks are studied:one tagger is based on requirements on the number of inner-detector tracks associated with the jet,and the other combines several jet substructure observables using a boosted decision tree.A method is established to determine the quark/gluon fraction in data,by using quark/gluon-enriched subsamples defined by the jet *** in tagging efficiency between data and simulation are provided for jets with transverse momentum between 500 GeV and 2 teV and for multiple tagger working points.

关键词： AtLAS JEt QUARK GLUON tAGGING

性别对冠状动脉支架置入术后新生内膜增生的影响

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世界核心医学期刊文摘（心脏病学分册） 2007年第7期3卷 20-21页

作者： Kaneda H. Ako J. Kataoka t. P.J. Fitzgerald 黄欣 Center for Research in Cardiovascular Interventions Stanford University Stanford CA United States Dr.

性别对裸金属支架置入术后长期预后是否有影响仍存在争论。本研究在一个大型支架置入术后患者队列中利用三维血管内超声检测性别对新生内膜增生的影响。以0．5mm为间隔手工探测整个支架置入节段的管腔和支架面积。使用simpson方法，计... 详细信息

性别对裸金属支架置入术后长期预后是否有影响仍存在争论。本研究在一个大型支架置入术后患者队列中利用三维血管内超声检测性别对新生内膜增生的影响。以0．5mm为间隔手工探测整个支架置入节段的管腔和支架面积。使用simpson方法，计算管腔容积、支架容积和新生内膜体积（支架容积减去管腔容积），并用支架长度标化。与男性相比，女性患者的年龄较大，更常伴有高脂血症或高血压，并且参考血管直径和平均支架面积较小。虽然女性患者中新生内膜增生和新生内膜厚度与男性患者相似，但是由于其支架面积较小，女性患者新生内膜增生的百分比（新生内膜面积除以支架面积）较高。

关键词：新生内膜增生冠状动脉支架置入术后性别血管内超声检测 simpson 内膜面积女性患者

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质子发射核151Lu的衰变研究

质子发射核151Lu的衰变研究

早产儿羊水胎粪污染及相关不良临床预后风险的研究

第十五届全国核结构大会

作者： F.Wang B.Sun Z.Liu C.Scholey S.F.Ashley L.Bianco D.M.Cullen I.J.Cullen I.G.Darby S.Eeckhaudt A.B.Garnsworthyand W.Gelletly M.B.Gomez-Hornillos t.Grahn P.t.Greenlees D.G.Jenkins G.A.Jones P.Jones D.t.Joss R.Julin S.Juutinen S.Kettelhut S.Khan A.Kishada M.Leino M.Niikura M.Nyman R.D.Page J.Pakarinen S.Pietri Z.Podolyak P.Rahkila S.Rigby J.Saren t.Shizuma J.simpson J.Sorri S.Steer N.J.thompson J.Uusitalo P.M.Walker S.Williams School of Physics and Nuclear Energy Engineering Beihang University Institute of Modern Physics Chinese Academy of Sciences Department of Physics University of Surrey Guildford Surrey GU2 7XH UK Department of Physics University of JyvaskylaJyvaskyla FI-40014 Finland Department of Physics University of Manchester Manchester M13 9PL UK

质子发射核为研究质子滴线附近的核结构提供了重要信息[1]。1981年,在德国GSI的SHIP的速度选择器上,发现了第一个基态质子发射核151Lu。近期又发现151Lu存在一个短寿命的低自旋同核异能态。基于WKB和DWBA理论,简单估计球形核的h11/2和d...

质子发射核为研究质子滴线附近的核结构提供了重要信息[1]。1981年,在德国GSI的SHIP的速度选择器上,发现了第一个基态质子发射核151Lu。近期又发现151Lu存在一个短寿命的低自旋同核异能态。基于WKB和DWBA理论,简单估计球形核的h11/2和d3/2带,可以得到基态为Ep=1223ke V,t1/2=280ms以及同核异能态Ep=1310ke V,t1/2=16μs[2-4]。151Lu激发态的首次跃迁测量是在橡树

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世界核心医学期刊文摘（儿科学分册） 2005年第2期1卷 15-16页

作者： tybulewicz A.t. Clgg S.K. Fonf'e G.J. Stenson B.J. 李开 Dr.Neonatal Unit Simpson Ctr.for Reproductive HealthRoyal InfirmaryLittle FranceEdinburgh EH16 4SUUnited Kingdom

研究背景:早产儿胎粪羊水污染(MSAF)的发病率还不确定。而MSAF可能提示早产儿患有李斯特菌病。但尚不清楚李斯特菌病引起早产儿MSAF的严重程度如何。

关键词：羊水胎粪污染李斯特菌病胎粪脑室内出血破膜时间纪念医院胎盘组织妇产科病房脓毒症细菌培养结果