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instaGraminoid,a Novel Colorimetric Method to Assess Herbicide Resistance,Identifies Patterns of Cross-Resistance in Annual Ryegrass

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Plant Phenomics 2019年第1期1卷 185-197页

作者： jefferson F.Paril alexandre J.Fournier-Level School of Biosciences University of MelbourneParkvilleVICAustralia

Herbicide resistance in agricultural weeds is a global problem with an increasing understanding that it is caused by multiple genes leading to quantitative *** quantitative patterns of resistance are not easy to decipher withmortality assays alone,and there is a need for straightforward and unbiased protocols to accurately assess quantitative herbicide ***—a computer vision and statistical analysis package—was developed as an automated and scalable method for quantifying herbicide *** package was tested in rigid ryegrass(Lolium rigidum),the most noxious and highly resistant weed in Australia and theMediterranean *** method provides quantitative measures of the degree of chlorosis and necrosis of individual plants which was shown to accurately reflect herbicide *** were able to reliably characterise resistance to four herbicides with different sites of action(glyphosate,sulfometuron,terbuthylazine,and trifluralin)in two *** populations from Southeast ***-validation of themethod across populations and herbicide treatments showed high repeatability and *** positive correlations in resistance of individual plants were observed across herbicides,which suggest either the accumulation of herbicide-specific resistance alleles in single genotypes(multiple stacked resistance)or the presence of general broad-effects resistance alleles(cross-resistance).We used these quantitative estimates of cross-resistance to simulate howresistance development under an herbicide rotation strategy is likely to be higher than expected.

关键词： straight likely Australia

Detecting subtle yet fast skeletal muscle contractions with ultrasoft and durable graphene-based cellular materials

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National Science Review 2022年第4期9卷 105-115页

作者： Zijun He Zheng Qi Huichao Liu Kangyan Wang Leslie Roberts jefferson Z.Liu Yilun Liu Stephen J.Wang Mark J.Cook George P.Simon Ling Qiu Dan Li Department of Chemical Engineering The University of Melbourne Department of Materials Science and Engineering Monash University Department of Chemical Engineering Monash University State Key Laboratory for Strength and Vibration of Mechanical Structures School of Aerospace EngineeringXi'an Jiaotong University Neurophysiology Department Department of Neurology and Neurological ResearchSt Vincent's Hospital Department of Medicine St.Vincent's HospitalUniversity of Melbourne Department of Mechanical Engineering University of Melbourne Department of Design Monash University School of Design The Hong Kong Polytechnic University Shenzhen Geim Graphene Center Tsinghua-Berkeley Shenzhen InstituteTsinghua University

Human bodily movements are primarily controlled by the contractions of skeletal muscles. Unlike joint or skeletal movements that are generally performed in the large displacement range, the contractions of the skeletal muscles that underpin these movements are subtle in intensity yet high in frequency. This subtlety of movement makes it a formidable challenge to develop wearable and durable so?t materials to electrically monitor such motions with high fidelity for the purpose of, for example, muscle/neuromuscular disease diagnosis. Here we report that an intrinsically fragile ultralow-density graphene-based cellular monolith sandwiched between silicone rubbers can exhibit a highly effective stress and strain transfer mechanism at its interface with the rubber, with a remarkable improvement in stretchability(>100%). In particular, this hybrid also exhibits a highly sensitive, broadband-frequency electrical response(up to 180 Hz) for a wide range of strains. By correlating the mechanical signal of muscle movements obtained from this hybrid material with electromyography, we demonstrate that the strain sensor based on this hybrid material may provide a new, so?t and wearable mechanomyography approach for real-time monitoring of complex neuromuscular–skeletal interactions in a broad range of healthcare and human–machine interface applications. This work also provides a new architecture-enabled functional so?t material platform for wearable electronics.

关键词： cellular graphene strain sensors high-frequency electromechanical property surface mechanomyography skeletal muscle activity

Cu- and Ni-Doping Effect on Structure and Magnetic Properties of Fe-Doped ZnO Nanoparticles

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Advances in Materials Physics and Chemistry 2013年第1期3卷 48-57页

作者： jefferson A. Wibowo Nadia F. Djaja Rosari Saleh Departemen Fisika FMIPA-Universitas Indonesia Depok Indonesia Departemen Fisika FMIPA-Universitas Indonesia Depok Indonesia.

Cu- and Ni-codoped FeZnO particles with the wurzite structure were successfully synthesized at low temperature by a co-precipitation method. The samples were characterized using a vibrating sample magnetometer, X-ray diffraction, energy dispersive X-ray spectroscopy, UV-Vis spectrophotometry and electron spin resonance. The results demonstrated that room temperature ferromagnetic order was observed in both samples and the magnetization was higher than that of Fe-doped ZnO. The correlation between the structural and magnetic properties is discussed.

关键词： Codoped ZnO Nanoparticles Room-Temperature-Ferromagnetic Co-Precipitation

DIS Parity and Spin Strcuture with a Solenoid

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DIS Parity and Spin Strcuture with a Solenoid

China-US Symposium on Medium Energy Physics and Workshop

作者： Jian-ping Chen jefferson Lab

＜正＞I will present the DIS Parity,Standard model test, Hadronic properties,Charge symmetry, Higher-twist （twist-4）, d/u at high x ,Nucleon Spin Structure, Valence quark spin structure, A1n at high x, g2n, d2n and higher-twist effects （twist-3）,Parity violating spin structure functions, g3/g5, Spin-Flavor decomposition and Transversity. The planned new detector will be shown and possible collaboration for construction with China groups will be discussed.

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来源： cnki会议评论

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结构改革与中国工业增长

经济研究 2009年第7期44卷 4-20页

作者：张军陈诗一 Gary H. jefferson 复旦大学中国社会主义市场经济研究中心 200433 美国布兰迪斯大学(Brandeis University)

1978年以来,中国工业在持续的结构改革中经历了强劲的增长和生产率水平的不断提高。本文估算了工业分行业随机前沿生产函数,发现1992年后,TFP增长超过了要素投入增长,但是TFP对工业增长的贡献在2001年后出现了下降。进一步对TFP增长分... 详细信息

1978年以来,中国工业在持续的结构改革中经历了强劲的增长和生产率水平的不断提高。本文估算了工业分行业随机前沿生产函数,发现1992年后,TFP增长超过了要素投入增长,但是TFP对工业增长的贡献在2001年后出现了下降。进一步对TFP增长分解后发现,由工业结构改革引致的行业间要素重置显然对改革开放期间中国工业生产率的提高乃至工业增长起到了实际推动作用,即结构红利是显著存在的,而2001年后要素配置效率的下降也成为同期TFP增长贡献份额下降的主要原因。因素回归分析显示,中国要素市场的改革和工业行业的结构调整主导了要素配置效率变化的总体走势,并造成了不同行业要素配置效率的显著差异。

关键词：结构改革要素配置效率结构红利生产率变化工业增长

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Case Study: Reviewing Methods of Assessing Community Adaptive Capacity for jefferson County, Texas

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American Journal of Climate Change 2016年第1期5卷 8-14页

作者： Faye Anderson Najla N. J. al-Thani Center for Advances in Water and Air Quality Lamar University Beaumont Texas USA

With the increased attention on community sustainability and resilience, different poles have developed voicing similarities and/or differences of the two concepts. This study quantifies adaptive capacity of jefferson County, Texas, one of the coastal communities at the Gulf of Mexico having some of the worse adverse effects. Review of existing methods is presented. Analyses were conducted for the last ten years: from 2005 to 2014. Interestingly, statistical analyses showed that the County’s socio-economic profile or indicators have not changed throughout the ten years, but the environmental, institutional, and infrastructure indicators have. Focusing on one location magnifies the adaptive capacity of jefferson County, the temporal aspect of both perspectives, and the relevance of existing methods to this community with its peculiarities. Future assessments need to be based on primary data collected through participatory engagement of all stakeholders. This calls for attempts to quantify adaptive capacity using the comparatively more challenging deductive reasoning, which would allow for incorporation of more risks and thus higher readiness.

关键词： Climate Change Resilience Risk jefferson County Texas Flooding Adaptive Capacity Upper Scale System

(Ca,Sr)GeO3晶体中环-链结构的共生长

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化学学报 1983年第4期41卷 297-301页

作者：温树林 D.A.jefferson J.M.Thomas 中国科学院上海硅酸盐研究所英国剑桥大学物理化学系英国剑桥大学物理化学系

通过（1-x）CaO+xSrO+GeO2→（Ca1-xSrx）GeO3的反应获得的产物经过淬火、退火形成晶态。用X射线衍射和分析电子显微镜进行研究,并用高分辨电子显微镜观察,由JEOLJEM200CX获得晶格象照片。研究结果指出:（Ca,Sr）GeO3晶体中存在环-链结... 详细信息

通过（1-x）CaO+xSrO+GeO2→（Ca1-xSrx）GeO3的反应获得的产物经过淬火、退火形成晶态。用X射线衍射和分析电子显微镜进行研究,并用高分辨电子显微镜观察,由JEOLJEM200CX获得晶格象照片。研究结果指出:（Ca,Sr）GeO3晶体中存在环-链结构的共生长,其共生长接触晶面为（100）SrGeO3/（101）CaGaO3·

关键词：链结构 Ca,Sr)GeO3 射线衍射晶格象电子衍射晶面面(晶体) 晶种链状结构晶粒颗粒硅灰石矽灰石链状硅酸盐矿物照片电子显微镜电镜 Sr 晶体

THE TRANSITION BETWEEN CHAIN AND RING STRUCTURES IN THE SYSTEM OF CaO-SrO-SiO_2-GeO_2

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Chinese Science Bulletin 1985年第4期30卷 471-474页

作者：温树林 D.A.jefferson J.M.THOMAS Shanghai Institute of Ceramics Academia Sinica Department of Physical Chemistry University of Cambrdge U. K. Department of Physical Chemistry University of Cambrdge U. K.? INTRODUCTION Calcium metasilicate possesses two kinds of structures namely wollastonite and pseudowollastonite. Wollastonite has chain structure but pseudowollastonite ring structure. The transition temperature between the two is 1250°C.

Ⅰ. INTRODUCTION Calcium metasilicate possesses two kinds of structures, namely, wollastonite and pseudowollastonite. Wollastonite has chain structure, but pseudowollastonite ring structure. The transition temperature... 详细信息

关键词： Radius corner hough appearance powerful partially annealing 刃刀 struc figure

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Yield and Uptake of Phosphorus by Wheat and Canola Grown after Two Years of Forage Legume and Annual Crops

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American Journal of Plant Sciences 2018年第9期9卷 1807-1825页

作者： Rehemuti Miheguli Jeff J. Schoenau Paul G. jefferson Department of Soil Science University of Saskatchewan Saskatoon Canada Western Beef Development Centre Humboldt Canada

Annual legumes have been shown to enhance the growth and phosphorus (P) uptake by following rotational crops. However, there is lack of information on the effect of perennial forage legumes included in rotation for a short duration on yield and P uptake of crops like wheat (Triticum aestivum L.) and canola (Brassica napus L.) grown after the forage legume. A field study was conducted in four soil zones of Saskatchewan, Canada to assess: 1) the effect of two years of forage legume versus annual cereal, oilseed and grain legume on yield and P uptake of wheat and canola grown in the two subsequent years and 2) the effect of the complete four-year rotation on soil P dynamics and P balance. Four different crop sequences (alfalfa-alfalfa, red clover-red clover, barley-pea and barley-flax) employed over the first two years of crop rotation were compared as treatments followed by wheat and canola. Wheat grain yield was improved 32% - 60% by alfalfa (Medicago sativa L.) and red clover (Trifolium pretense L.) rotations at three of the four sites (P = 0.008, P = 0.001, P al grains, while grain P uptake was enhanced 38% - 43% by red clover and alfalfa rotation at two sites (P = 0.013, P = 0.033). In the following year, positive yield benefits (55% - 64%) of having two years of alfalfa and red clover were observed at three sites. Four years of continuous cropping with a limited addition of fertilizer P resulted in a negative soil P balance and significant depletion of soil P fertility at all locations.

关键词： Yield Phosphorus Uptake Wheat Canola Forage Legume Crop Rotations