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Glyphosate-Resistant Giant Ragweed(Ambrosia trifida L.)in Ontario:Dose Response and Control with Postemergence Herbicides

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American journal of Plant Sciences 2012年第5期3卷 608-617页

作者： joseph P.Vink Nader Soltani Darren e.Robinson Francois j.Tardif Mark B.Lawton Peter H.Sikkema University of Guelph Ridgetown CampusRidgetownCanada University of Guelph GuelphCanada Monsanto Canada GuelphCanada

Giant ragweed (Ambrosia trifida L.) is competitive with agronomic crops and can cause significant yield losses. Rapid adoption of glyphosate-resistant (GR) crops and a concomitant increase in the reliance on glyphosate for weed management has led to the evolution of GR giant ragweed in Ontario, Canada. Field studies were conducted to evaluate the level of resistance in giant ragweed biotypes from Ontario, and to evaluate the effectiveness of various postemer-gence (POST) herbicides in soybean (Glycine max L.). The effective dose (eD) to provide 50%, 80% and 95% giant ragweed control was up to 1658, 9991 and >43200 g?a.e.?ha–1 4 weeks after application (WAA), respectively. For effective control, growers would need to apply glyphosate 18 times greater than the recommended field application dose. Glyphosate applied at the recommended field dose of 900 g?a.e.?ha–1 provided up to 57% control and resulted in soybean yield equivalent to the weedy check. Cloransulam-methyl applied POST provided up to 99% control, reduced giant ragweed density 98%, reduced giant ragweed shoot dry weight 99% and resulted in soybean yield equivalent to the weedfree check. Chlorimuron-ethyl, fomesafen, imazethapyr and imazethapyr plus bentazon applied alone or with glyphosate did not provide adequate control of GR giant ragweed. Based on these results, some GR giant ragweed biotypes from Ontario have evolved a high level of resistance to glyphosate. Cloransulam-methyl applied POST was the only herbicide that provided adequate control and suggests that additional weed management tactics will need to be implemented in order to effectively manage GR giant ragweed.

关键词： Bentazon Chlorimuron-ethyl Cloransulam-Methyl Fomesafen Glyphosate-Resistant Crops Herbicide-Resistant Weeds Imazethapyr Soybean

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Petrology and SHRIMP zircon geochronology of granulites from Vesleknausen, Lützow-Holm Complex, east Antarctica: Neoarchean magmatism and Neoproterozoic high-grade metamorphism

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Geoscience Frontiers 2014年第2期5卷 167-182页

作者： Toshiaki Tsunogae Daniel j.Dunkley Kenji Horie Takahiro endo Tomoharu Miyamoto Mutsumi Kato Graduate School of Life and environmental Sciences University of Tsukuba Department of Geology University of Johannesburg Department of Applied Geology Western Australian School of Mines Curtin University National Institute of Polar Research Department of earth and Planetary Sciences Faculty of Sciences Kyushu University Department of earth Sciences Graduate School of Science Chiba University

We report new petrological data and geochronological measurements of granulites from Vesleknausen in the highest-grade section of the L＆#252;tzow-Holm Complex, part of the Gondwana-assembling collisional orogen in east Antarctica. The locality is dominated by felsic to intermediate orthogneiss （charnockite and minor biotite gneiss）, mafic orthogneiss, and hornblende-pyroxene granulite, with deformed and undeformed dykes of metagranite and felsic pegmatite. Pseudosection analysis of charnockite in the system NCKFMASHTO, supported by geothermometry of mafic orthogneiss, was used to infer peak metamorphic temperatures of 750e850 ？C, approximately 150 ？C lower than those estimated for met-asedimentary gneisses from Rundv？gshetta, 6 km to the northeast. SHRIMP U-Pb analysis of zircons from feldspar-pyroxene gneiss, which corresponds to a partially molten patch around mafic orthogneiss, yielded a Concordia upper intercept ages of 2507.9 ？ 7.4 Ma, corresponding to the time of formation of the magmatic protolith to the orthogneiss. Partial melting during peak metamorphism probably took place between 591 and 548 Ma, as recorded in rims overgrew around magmatic zircon. Our results suggest that Rundv？gshetta-Vesleknausen-Strandnibba region in southwestern L＆#252;tzow-Holm Bay, where orthogneisses are dominant, consists of a single crustal block, possibly formed by ca. 2.5 Ga arc mag-matism. The Neoarchean magmatic terrane was tectonically mingled with other fragments （such as metasedimentary units in northern L＆#252;tzow-Holm Bay） by subduction/collision events during the as-sembly of Gondwana supercontinent, and subsequently underwent w850 ？C granulite-facies meta-morphosed during Neoproterozoic to Cambrian final collisional event.

关键词： Granulite Charnockite SHRIMP zircon geochronology Pseudosection Rundvagshetta Gondwana supercontinent

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Fiber Cavity Ring-Down Using an Optical Time-Domain Reflectometer

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Photonic Sensors 2014年第4期4卷 295-299页

作者： D. j. PASSOS S. O. SILVA j. R. A. FeRNANDeS M. B. MARQUeS O. FRAZAO INeSC Porto Rua do Campo Alegre 687 4169-007 Porto Portugal and Dept. de Fisica e Astronomia da Faculdade deCiOncias da Universidade do Porto Rua do Campo Alegre 687 4169-007 Porto Portugal Departamento de Fisica Escola de Ci~ncias e Tecnologia Universidade de Tr6s-os-Montes e Alto Douro Quinta dePrados 5001-801 Vila Real Portugal

This work presented a demonstration of the potential for a fiber based cavity ring-down （CRD） using an optical time-domain reflectometer （OTDR）. The OTDR was used to send the impulses down into about 20km of a standard single optical fiber, at the end of which the fiber cavity ring-down was placed. The OTDR measured no appreciable losses, so other CRDs multiplexed could be spliced in parallel along the same optical fiber. To demonstrate the behavior and sensitivity of the proposed configuration, a displacement sensor based on a fiber taper with a diameter of 50 μm was placed inside the fiber loop, and the induced losses were measured on the CRD signal -- a sensitivity of 11.8 ＋ 0.5 μs/mm was achieved. The dynamic range of the sensing head used in this configuration was about 2 mm. Finally, this work was also compared with different works published in the literature.

关键词： Optical fiber sensors cavity ring-down OTDR

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对于选择蛋氨酸活性源的研究

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中国饲料 1993年第1期 44-45页

作者： e.e.M.Pierson j.j.Dibner C.D.Knight R.A.Swick 李美同

天然的和人工合成的蛋氨酸活性源为经济地满足动物对蛋氨酸的需要,必须明白氨基酸是如何提供和代谢的。蛋氨酸是靠日粮中天然的和人工合成的配合提供的。以液态或固态有效添加剂形式供应的合成蛋氨酸活性物质有:D,L—2—羟基—4—(甲硫... 详细信息

天然的和人工合成的蛋氨酸活性源为经济地满足动物对蛋氨酸的需要,必须明白氨基酸是如何提供和代谢的。蛋氨酸是靠日粮中天然的和人工合成的配合提供的。以液态或固态有效添加剂形式供应的合成蛋氨酸活性物质有:D,L—2—羟基—4—(甲硫基)丁基(HMB)酸(Alimet^B,液态)或其钙盐(MHA^R,固态),或D,L—2—氨基—4—(甲硫基)丁酸(固态D,L—蛋氨酸,DLM)或液体蛋氨酸钠盐。

关键词：饲料蛋氨酸来源

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Ion acceleration and neutron production in hybrid gas-puff z-pinches on the GIT-12 and HAWK generators

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Matter and Radiation at extremes 2020年第2期5卷 33-42页

作者： D.Klir S.L.jackson A.V.Shishlov V.A.Kokshenev K.Rezac A.R.Beresnyak R.K.Cherdizov j.Cikhardt B.Cikhardtova G.N.Dudkin j.T.engelbrecht F.I.Fursov j.Krasa j.Kravarik P.Kubes N.e.Kurmaev V.Munzar N.A.Ratakhin K.Turek V.A.Varlachev Czech Technical University in Prague Faculty of Electrical Engineering16627 Prague 6Czech Republic Plasma Physics Division U.S.Naval Research LaboratoryWashingtonDistrict of Columbia 20375USA Institute of High Current electronics SB RAS Tomsk634055Russia National Research Tomsk Polytechnic University Tomsk634050Russia Institute of Physics Academy of Sciences of Czech Republic18221 Prague 8Czech Republic Nuclear Physics Institute Academy of Sciences of Czech Republic18086 PragueCzech Republic

Z-pinch experiments with a hybrid configuration of a deuterium gas puff have been carried out on theHAWK(NRL,Washington,DC)and GIT-12(IHCe,Tomsk)pulsed power generators at 0.7 MA and 3MA currents,*** GIT-12,neutron yields reached an average value of 231012 neutrons,and deuterons were accelerated up to an energy of 30 *** was 50 times the ion energy provided by the generator driving voltage of 0.6 MV and the highest energy observed in z-pinches and dense plasma *** confirm these unique results independently on another device,we performed several experimental campaigns on *** of the experiments onGIT-12 andHAWKhelped us to understand which parameters are essential for optimized neutron *** theHAWKgenerator is of a similar pulsed power architecture as GIT-12,the experiments on GIT-12 and HAWK are important for the study of how charged-particle acceleration scales with the current.

关键词： acceleration generator independently

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effect of Molybdate Ions on the Corrosion Behaviour of Ti Alloys

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journal of Materials Science & Technology 2000年第1期16卷 45-49页

作者： Magda.M.A.Gad, Kamal.e.Mohamed and Abdelwahab A.el-Sayed (Metallurgy Dept., Materials Division, Atomic energy Authority, Cairo, egypt) Metallurgy Dept. Materials Division Atomic Energy Authority Cairo Egypt

Titanium alloys are extensively used in power, chemical and petroleum industries as constructional materials for vessels and heat transfer tubes. Moreover they are candidate materials for nuclear waste disposal. These alloys have superior resistance to localized forms of corrosion compared to stainless steels and Ni-base alloys. However, this resistance is not as remarkable in crevice corrosion conditions in some aggressive media. electrochemical corrosion tests were conducted on two ASTM Ti grades namely, Ti-2 and Ti-12 in extremely low pH acidic environment. Results indicated that Ti-2 has less resistance to both general and crevice corrosion attack than Ti-12. Both alloys possess better resistance to general corrosion than to crevice corrosion. Also, results showed that the molybdate addition improves remarkably the resistance of Ti-2 to both types of attack. The increase of molybdate ions concentration from 0.03 mol/L to 0.15 mol/L made Ti-2 to be as resistant as, or somewhat higher than, Ti-12. The elecrochemical findings were further supplemented by optical examination of the corroded surface.

关键词： Ti Mo effect of Molybdate Ions on the Corrosion Behaviour of Ti Alloys

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Measurement of calprotectin in ascitic fluid to identify elevated polymorphonuclear cell count

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World journal of Gastroenterology 2013年第13期19卷 2028-2036页

作者： emanuel Burri Felix Schulte jürgen Muser Rémy Meier Christoph Beglinger Gastroenterology and Hepatology University Hospital Basel Gastroenterology Hepatology and Clinical NutritionCantonal Hospital Central Laboratories Cantonal Hospital

AIM: To evaluate the diagnostic capability of calprotectin in ascitic fluid for detecting a polymorphonuclear (PMN) cell count > 250/μL ascites. MeTHODS: In this prospective observational study, a total of 130 ascites samples were analysed from 71 consecutive patients referred for paracentesis. Total and differential leukocyte cell counts were determined manually with a Neubauer chamber and gentianviolet stain. Calprotectin was measured in 1 mL ascetic fluid by enzyme-linked immunosorbent assay (eLISA) and a point-of-care (POC) lateral flow assay with the Quantum Blue Reader (Bühlmann Laboratories). All measurements were carried out in a central laboratory by senior personnel blinded to patient history. A PMN count > 250/μL was the primary endpoint of the study. The diagnostic value of ascitic calprotectin measurement was assessed by comparing to the final diagnosis of each patient that had been adjudicated by investigators blinded to calprotectin values. ReSULTS: The PMN count was > 250/μL in 19 samples (14.6%) from 15 patients (21.1%) and varied widely among the study population (range 10-19 800/mL and 1-17 820/mL, respectively). Spontaneous bacterial peritonitis (SBP) was the final diagnosis in four patients (5.6%). All patients with PMN ≤ 250/μL had negative bacterial culture. PMN count was elevated in five patients with peritoneal carcinomatosis, three with lymphoma, one with neuroendocrine carcinoma, and two with secondary peritonitis due to abdominal perforation. PMN cell counts correlated with ascitic calprotectin values (Spearman's rho; r = 0.457 for eLISA, r = 0.473 for POC). A considerable range of ascitic calprotectin concentrations was detected by eLISA [median 0.43 μg/mL, interquartile range (IQR) 0.23-1.23 (range 0.10-14.93)] and POC [median 0.38 μg/mL, IQR 0.38-0.56 (range 0.38-13.31)]. Ascitic calprotectin levels were higher in samples with PMN > 250/μL, by both eLISA [median (IQR) 2.48 μg/mL (1.61-3.65) vs 0.10 μg/mL (0.10-0.36), P < 0.001] and POC

关键词： Calprotectin Ascites Liver cirrhosis Spontaneous bacterial peritonitis Polymorphonuclear cells

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可满足高炉严格使用要求的高性能MTT金属管铸铜冷却壁

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钢铁 2007年第3期42卷 79-82页

作者： e.van Stein Callenfels R.van Laar 达涅利康力斯

达涅利康力斯推出一种新的冷却概念,它将铜冷却壁与浇铸在其中的蒙乃尔铜-镍合金管结合为一个整体。蒙乃尔铜-镍合金管构成冷却水通道。它不仅可使冷却水拥有一条光滑的无泄漏通道,而且具有足够的尺寸灵活性,以满足躲避现有高炉炉壳开... 详细信息

达涅利康力斯推出一种新的冷却概念,它将铜冷却壁与浇铸在其中的蒙乃尔铜-镍合金管结合为一个整体。蒙乃尔铜-镍合金管构成冷却水通道。它不仅可使冷却水拥有一条光滑的无泄漏通道,而且具有足够的尺寸灵活性,以满足躲避现有高炉炉壳开口的要求,还可以省去在高炉炉壳内的任何焊接。

关键词：高炉长寿冷却壁

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The impact of weather on summer and winter exercise behaviors

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journal of Sport and Health Science 2019年第1期8卷 39-45页

作者： Abram L.Wagner Florian Keusch Ting Yan Philippa j.Clarke Department of epidemiology University of Michigan Institute for Social Research University of Michigan

Background: Outdoor exercise is an enjoyable way for individuals to improve fitness, but it is dependent on weather conditions. This study examines the association between weather conditions and outdoor exercise after adjustment for age, sex, race, and socioeconomic ***: We used data representative of American adults from the University of Michigan/Thomson Reuters june 2013 surveys of consumers(core and supplement) to investigate self-reported exercise behavior in summer and winter. Multivariate multinomial logistic regression models estimated the odds of delayed or indoor exercise compared with outdoor ***: Of the 502 respondents, 16.3% did not regularly exercise outdoors(i.e., at least once a week), and many would delay exercise both in summer(51.8%) and winter(43.9%). Individuals listing rain as the predominant adverse weather condition had 3.33 times higher odds of exercising indoors(95% confidence interval(CI): 1.34-8.28) and 3.49 times higher odds of delaying exercise(95%CI: 1.69-7.21) compared with those mentioning heat as the predominant adverse condition. Individuals for whom ice or snow was an adverse winter weather condition were more likely to delay exercise(odds ratio(OR) = 3.34; 95%CI: 1.19-9.36), compared with those concerned with ***: This study found that race, age, and education exacerbate the negative effects of adverse weather conditions on the decision to exercise outdoors. Accordingly, any recommendation for an individual to exercise outdoors should be combined with an evaluation of the individual's outdoor environment along with strategies for the individual to continue exercising, indoors or outdoors, when adverse weather is present.

关键词： Outdoor exercise Physical activity Rain Seasons Snow Survey

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城市土壤中重金属元素的积累及其微生物效应

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环境科学 2001年第3期22卷 44-48页

作者：杨元根 e.Paterson C.Campbell 中国科学院地球化学研究所贵阳550002 The Macaulay Land Use Research Institute

与农村土壤相比 ,阿伯丁市城市土壤 (路边土、公园土 )的微生物特征发生了显著的改变 ,微生物基底呼吸作用明显增强 ,但微生物生物量却显著降低 ,微生物生理生态参数Cmic Corg、qCO2 值明显升高 ,Biolog数据显示城市土壤对能源碳的消耗... 详细信息

与农村土壤相比 ,阿伯丁市城市土壤 (路边土、公园土 )的微生物特征发生了显著的改变 ,微生物基底呼吸作用明显增强 ,但微生物生物量却显著降低 ,微生物生理生态参数Cmic Corg、qCO2 值明显升高 ,Biolog数据显示城市土壤对能源碳的消耗量和速度显著升高 .对重金属元素研究表明 ,与农村土相比城市土壤中重金属Pb、Zn、Cu、Ni已经有明显积累 ,化学形态研究表明Pb主要与氧化铁有关 ,Ni、Zn以残渣态为主 ,Cd以有效态为主 ,而Cu除有效态外 ,其它结合形态基本具有同等重要的意义 .主成分分析表明 ,有效态Pb是控制城市土壤与农村土壤微生物特征差异的主要因素 ,其次为Zn ,Cu和Ni的有效态和有机态亦有一定的作用效应 .

关键词：城市土壤微生物特征重金属分布化学形态

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