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晶态四硼酸锶中二价镝的发射(英文)

发光学报 2001年第4期22卷 367-372页

作者：许武 peterson J R 中国科学院长春光学精密机械与物理研究所吉林长春130022 Transuranium Research Laboratory (Chemical and Analytical Sciences Division)

在室温下测量了在空气中灼烧掺杂Ｄｙ２Ｏ３的ＳｒＢ４Ｏ７的发射光谱。观测到了由Ｄｙ３＋到Ｄｙ２＋氧化态的变化。经优化，当在空气中灼烧温度为６５０℃时为产生Ｄｙ２＋的最佳温度。在４５７．９ｎｍ的激发下测出了两个峰位分别位... 详细信息

在室温下测量了在空气中灼烧掺杂Ｄｙ２Ｏ３的ＳｒＢ４Ｏ７的发射光谱。观测到了由Ｄｙ３＋到Ｄｙ２＋氧化态的变化。经优化，当在空气中灼烧温度为６５０℃时为产生Ｄｙ２＋的最佳温度。在４５７．９ｎｍ的激发下测出了两个峰位分别位于５５０和６６０ｎｍ的宽发射带。我们认为这两个宽发射带是由Ｄｙ２＋离子由５ｄ态向４ｆ基态能级（５Ｉ８）跃迁产生的。讨论了几个有益于在这种基质中还原Ｄｙ３＋离子的条件。为了实现Ｄｙ３＋离子的还原，我们还在Ａｒ／Ｈ２（４％）气氛中制备了Ｄｙ２Ｏ３掺杂的ＳｒＢ４Ｏ７，比较了这种样品和在空气中所制备的样品的光学特性。本文还对标志ＳｒＢ４Ｏ７还原性和稳定性的ｇ－因子由Ｔｍ２＋的［Ｅ０（Ｔｍ３＋／Ｔｍ２＋＝－２．３Ｖ］推导出时Ｄｙ２＋的［Ｅ０（Ｄｙ３＋／Ｄｙ２＋）＝－２．６Ｖ］，但对这种还原过程的局限性尚未确定。

关键词：稀土离子发光二价镝 SrB4O7 晶态四硼酸锶发射

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THE TREND OF OPHTHALMOLOGY IN CHINA

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中华医学杂志(英文版) 1934年第9期 1009-1010页

作者： R. A. peterson

Ophthalmology in China has developed in three successive phases. From the arrival of Dr. Peter Parker in Canton one hundred years ago until the last two decades, emphasis was laid on the curative phase of ophthalmology. Within the last two decades, earlier efforts in ophthalmic research have been coordinated and some notable research work on ophthalmic problems has been done. Although various problems in ophthalmology have been considered from the public health viewpoint, it is only recently that the preventive phase of oph-

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Complications of physician misdiagnosis/treatment of rheumatic fever in the United States

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Advances in Bioscience and Biotechnology 2013年第1期4卷 143-146页

作者： Diana C. peterson Department of Biomedical Sciences Iowa State University Ames USA

Rheumatic fever is an auto-immune disease caused by exposure to Streptococcus pyogenes. Over the last 50 years, reports of rheumatic fever within the United States have diminished. The decrease was attributed to the advent of penicillin in the treatment of streptococcus infections. We propose that current diagnostic and treatment methodologies may adversely increase the morbidity rate of rheumatic fever within the United States. Publication rates and interest in rheumatic fever has diminished over the last 30 years. Because of this decline, many physicians are only vaguely aware of the disorder. Additionally, the fear of antibiotic resistance has influenced theCenterofDisease Control to suggest a significant decrease in the use of antibiotics by physicians. Although extremely valid for the future health and well-being of the population, such policies must be examined for each individual case carefully. The American Heart Association prescribes long-term antibiotic prophylaxis as the only current treatment;however literature reviews indicate that such therapy is rarely used. Therefore individuals diagnosed with rheumatic fever are not being treated. Additionally, because many physicians are not routinely testing for streptococcus or early signs of endocarditis, it is likely that cases of rheumatic fever will increase in the future, and many individuals may not be diagnosed until sever damage or morbidity occurs. Physician education and clear revised guidelines are necessary to ensure adequate treatment of individuals with rheumatic fever. Mis-understandings of the disease and how it should be treated by first responders (i.e. primary care providers and pediatricians) are discussed.

关键词： Physician Guidelines Prophylaxis Antibiotic Resistance Penicillin Rheumatic Heart Disease Endocarditis

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光栅/薄膜纳米结构磁极化激发特性分析

工程热物理学报 2013年第9期34卷 1699-1702页

作者：帅永赵博张卓敏 peterson G P 谈和平哈尔滨工业大学能源学院黑龙江哈尔滨150001 佐治亚理工学院亚特兰大ga30332

本文采用严格耦合波法(RCWA)分析了光栅/薄膜结构磁极化激发特性,研究了二维光栅结构与三维光栅结构对TPV辐射器光谱选择特性的影响,考察了金属材料、入射角、偏振特性、光栅尺寸等参数对光谱发射率的影响,获得了几何参数和物性参数对... 详细信息

本文采用严格耦合波法(RCWA)分析了光栅/薄膜结构磁极化激发特性,研究了二维光栅结构与三维光栅结构对TPV辐射器光谱选择特性的影响,考察了金属材料、入射角、偏振特性、光栅尺寸等参数对光谱发射率的影响,获得了几何参数和物性参数对磁极化激元的激发规律。这种纳米结构对太阳能电池、热光伏设备和辐射发射器具有重要的应用价值。

关键词：辐射换热辐射器光栅结构磁极化 TPV

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Mathematics for elementary teachers a contemporary approach Gary ***, William F. Burger, Blake E. peterson 5th ed.; updated ed.

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Asymmetrical positive assortative mating induced by developmental lead （Pb2＋） exposure in a model system, Drosophila melanogaster

2001年

作者： Gary L.Musser William F. Burger Blake E. peterson

来源：畅想之星图书光盘版（南... 评论

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Current Zoology 2017年第2期63卷 195-203页

作者： Elizabeth K. peterson Roman YUKILEVICH Joanne KEHLBECK Kelly M. LARUE Kyle FERRAIOLO Kurt HOLLOCHER Helmut V.B. HIRSCH Bernard POSSIDENTE Department of Biological Sciences State University of New York at Albany Albany NY 12222 USA Department of Biology Union College Schenectady NY 12308 USA Department of Chemistry Union College Schenectady NY 12308 USA Department of Molecular Biology Princeton University Princeton NJ 08544 USA Department of Geology Union College Schenectady NY 12308 USA Department of Biology Skidmore College Saratoga Springs NY 12866 USA

Anthropogenic pollutants have the potential to disrupt reproductive strategies. Little is known about how lead （Pb2＋） exposure disrupts individual-level responses in reproductive behaviors, which are important for fitness. Drosophila melanogaster was used as a model system to deter- mine the effects of： 1） developmental lead exposure on pre-mating reproductive behaviors （i.e., mate preference）, and 2） lead exposure and mating preferences on fitness in the F0 parental generation and F1 un-exposed offspring. Wild-type strains of D. melanogaster were reared from egg stage to adulthood in control or leaded medium （250 μM PbAc） and tested for differences in： mate preference, male song performance, sex pheromone expression, fecundity, mortality, and body weight. F0 leaded females preferentially mated with leaded males （i.e., asymmetrical positive assortative mating） in 2-choice tests. This positive assortative mating was mediated by the females （and not the males） and was dependent upon context and developmental exposure to Pb. Neither the courtship song nor the sex pheromone profile expressed by control and leaded males medi- ated the positive assortative mating in leaded females. Leaded females did not incur a fitness cost in terms of reduced fecundity, increased mortality, or decreased body weight by mating with leaded males. These results suggest that sublethal exposure to lead during development can alter mate preferences in adults, but not fitness measures once lead exposure has been removed. We suggest that changes in mate preference may induce fitness costs, as well as long-term population and multi-generational implications, if pollution is persistent in the environment.

关键词： cuticular hydrocarbons positive assortative mating random mating species recognition system.

Community Smart Grid Utilizing Dynamic Demand Response and Tidal Power for Grid Stabilization

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Smart Grid and Renewable Energy 2013年第7期4卷 465-472页

作者： Anna Demeo Michael L. peterson College of the Atlantic Bar Harbor USA Department of Mechanical Engineering University of Maine Orono USA. Department of Mechanical Engineering University of Maine Orono USA

Conventional electricity generation is one of the largest contributors to climate change. Renewable energy sources are a promising part of the solution but uncertainty combined with a lack of controllability prevents renewable sources of power from being direct substitutes of conventional energy sources. This shift towards a higher penetration of renewable energy into the electric grid can be realized with the implementation of a more sophisticated smart grid, which uses dynamic demand response to alter demand on following generation. Research on renewable energy penetration of the grid predominately focuses on wind and solar power resources but demand cannot always match availability from these sources and therefore greatly increases the need for energy storage. Tidal power differs from solar and wind. It’s a predictably renewable resource which makes it extremely valuable even on a relatively small scale. Introduction of tidal power in a high penetration micro-grid can serve to stabilize the grid and reduce the amount of storage required. Widely different time scale for wind, solar and tidal power availability results in low cross correlations and therefore increases stability. This research describes an incremental approach to migrating a grid-tie island towards the formation of a smart-micro grid. The system will include a high penetration of three distributed generation systems, wind, solar and tidal and utilize commercially available energy storage and a smart-home management controller. Dynamic demand response through load balancing is implemented to minimize interactions with the electric grid. A second component of this work is to determine the optimum tidal generation capacity for the micro grid such that needed storage capacity from batteries or the utility grid is minimized.

关键词： Smart Grid Tidal Power Renewable Energy Micro Grid

The Effects of Surface Water Velocity on Hyporheic Interchange

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Journal of Water Resource and Protection 2014年第4期6卷 327-336页

作者： Timothy Sickbert Eric W. peterson 1School of Geology Noble Research Center Oklahoma State University Stillwater USA 2Department of Geography-Geology Illinois State University Normal USA Department of Geography-Geology Illinois State University Normal USA

When evaluating hyporheic exchange in a flowing stream, it is inappropriate to directly compare stream stage with subsurface hydraulic head (h) to determine direction and magnitude of the gradient between the stream and the subsurface. In the case of moving water, it is invalid to ignore velocity and to assume that stage equals the net downward pressure on the streambed.? The Bernoulli equation describes the distribution of energy within flowing fluids and implies that net pressure decreases as a function of velocity, i.e., the Venturi Effect, which sufficiently reduces the pressure on the streambed to create the appearance of a downward gradient when in fact the gradient may be upward with stream flow drawing water from the subsurface to the surface. A field study correlating the difference between subsurface head and stream stage in a low-gradient stream indicates that the effect is present and significant: shallow subsurface head increases less quickly than stage while deeper subsurface head increases more quickly. These results can substantially improve conceptual models and simulations of hyporheic flow.

关键词： Hyporheic Zone Bernoulli Equation Venturi Effect Geomorphology Fluvial Groundwater/Surface Water Interaction Streamflow

Ultrafast impulsive Raman spectroscopy across the terahertz-fingerprint region

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Advanced Photonics 2022年第1期4卷 80-91页

作者： Walker peterson Julia Gala de Pablo Matthew Lindley Kotaro Hiramatsu Keisuke Goda The University of Tokyo School of ScienceDepartment of ChemistryTokyoJapan The University of Tokyo Research Center for SpectrochemistryTokyoJapan PRESTO Japan Science and Technology AgencySaitamaJapan Japan Science and Technology Agency TokyoJapan University of California Los AngelesDepartment of BioengineeringLos AngelesCaliforniaUnited States Wuhan University Institute of Technological SciencesWuhanChina

Broadband Raman spectroscopy(detection bandwidth>1000 cm^(−1))is a valuable and widely used tool for understanding samples via label-free measurements of their molecular *** important Raman spectral regions are the chemically specific“fingerprint”(200 to 1800 cm^(−1))and“low-frequency”or“terahertz”(THz)(500×enhancement of10×enhancement of fingerprint sensitivity above 1000 cm^(−1)compared with that of SE-ISRS.

关键词： optics photonics spectroscopy Raman spectroscopy terahertz

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