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Reading Between the Lrtters

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小学生时代（大嘴英语） 2018年第11期 18-21页

作者： Connie Bowsman jerry Smath(图)

The alphabet says HI between the G and J,but never says GOODBYE.I guess it plans to *** ask it,'Will you go?'Then skip ahead and *** alphabet says NO between the m and P.

关键词：小学英语课外阅读阅读材料

ZrO2对激光烧结Al2O3/SiO2/ZrO2显微组织和显微硬度的影响

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中国机械工程 2014年第6期25卷 727-730页

作者：王蔚刘永贤 Fuh Y.X.jerry 东北大学沈阳110819 沈阳工业大学沈阳110870 新加坡国立大学新加坡117576

在Nd:YAG激光器低功率烧结的条件下,基于选择性激光烧结工艺(SLS)成形复相陶瓷Al2O3/SiO2/ZrO2材料,利用扫描电子显微镜(SEm)、X射线衍射分析仪(XRD)和显微硬度计分别对激光烧结层加入ZrO2前后的表面形貌和断口形貌、表面物相、表面显... 详细信息

在Nd:YAG激光器低功率烧结的条件下,基于选择性激光烧结工艺(SLS)成形复相陶瓷Al2O3/SiO2/ZrO2材料,利用扫描电子显微镜(SEm)、X射线衍射分析仪(XRD)和显微硬度计分别对激光烧结层加入ZrO2前后的表面形貌和断口形貌、表面物相、表面显微硬度进行了分析。结果表明,部分四方相ZrO2(t-ZrO2)相变成单斜相ZrO2(m-ZrO2),应力诱导微裂纹增韧作用和Al2O3弥散强化共同作用在某种程度上提高了烧结试样的断裂韧性,对于改善零件整体寿命和可靠性有着重要的意义。

关键词：激光烧结复相陶瓷显微组织显微硬度

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Rodent control to fight plague:field assessment of methods based on rat density reduction

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Integrative Zoology 2021年第6期16卷 868-885页

作者： Soanandrasana RAHELINIRINA Kathryn SCOBIE Beza RAmASINDRAZANA Voahangy ANDRIANAIVOARImANANA Fanohinjanaharinirina RASOAmALALA Lovasoa Nomena RANDRIANTSEHENO jerry Sylvio RAKOTONIAINA Olivier GORGÉ Xavier LAmBIN Eric VALADE Sandra TELFER minoarisoa RAJERISON Institut Pasteur de madagascar Plague UnitAntananarivoMadagascar School of Biological Sciences University of AberdeenAberdeenUK Central Laboratory for Plague Ministry of Public HealthAntananarivoMadagascar Institut de Recherche Biomédicale des Armées ParisFrance

Rodents represent a serious threat to food security and public *** extent to which rodent control can mitigate the risk from rodent-borne disease depends on both the effectiveness of control in reducing rodent abundance and the impact on disease *** on a plague-endemic region of madagascar,this study compared the effectiveness of 3 methods:live-traps,snap-traps,and *** interventions were implemented inside houses between may and October *** tiles monitored rodent *** fleas,the vector involved in plague transmission,were *** populations consisted of Rattus rattus and mus *** terms of trap success,we found that our live-trap regime was more effective than *** all 3 control strategies appeared to reduce in-house rodent activity in the short term,we found no evidence of a longer-term effect,with in-house rodent abundance in treated sites comparable to non-treatment sites by the following *** flea,Synopsyllus fonquerniei,is a key plague vector usually found on rats living *** we found no evidence that its abundance inside houses increased following control,this may have been due to a lack of power caused by significant variation in *** *** presence of *** in houses was more likely when *** abundance on outdoor rats was higher,which in turn correlated with high rat *** results emphasize that control strategies need to consider this connectivity between in-house rat–flea populations and the outdoor populations,and any potential consequences for plague transmission.

关键词： fleas madagascar plague rodents surveillance

共振声谱法低频岩石声学参数测量的实验方案研究

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测井技术 2003年第3期27卷 177-180页

作者： jerry m.Harris 丛健生宋延杰陈德华徐德龙王秀明美国斯坦福大学地球物理系大庆石油学院

根据共振声谱原理,针对低频岩石声学参数测量做了初步的实验探讨。建立了一套计算机控制的由锁相放大器、功率放大器以及圆柱共振腔体等组成的共振声谱测量系统,并利用该实验系统对空腔体和腔体中存在扰动体(岩样)时的共振声谱进行了初... 详细信息

根据共振声谱原理,针对低频岩石声学参数测量做了初步的实验探讨。建立了一套计算机控制的由锁相放大器、功率放大器以及圆柱共振腔体等组成的共振声谱测量系统,并利用该实验系统对空腔体和腔体中存在扰动体(岩样)时的共振声谱进行了初步测量,考察了小扰动体在共振腔轴线上位于腔体顶部和中部2个位置上的共振频谱。结果表明,所建立的实验系统在测量中是稳定的;腔体中存在扰动体时的共振频率和幅度与空腔体中的共振频率和幅度之间存在比较明显的差别,并且声学参数不同的小扰动体之间的共振频率和幅度也各不相同。

关键词：共振声谱法低频岩石声学参数测量实验方案圆柱形共振腔低频岩样

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Phase shift approximation for the post-critical seismic wave

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Phase shift approximation for the post-critical seismic wave

液相色谱/离子阱质谱和飞行时间质谱分析橄榄油中的特丁津除草剂

中国科学院地质与地球物理研究所2012年度（第12届）学术年会

作者： Xinyan Zhang Zhongjie Zhang Tao Xu Zhiming Bai jerry m Harris State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of Sciences Department of Geophysics Stanford University

Post-critical seismic waves are widely used in crustal exploration of the seismic velocity structure,and are gaining interest in the oil/gas seismic community to image the deeper structure beneath the high velocity basalt *** are featured with their phase shifts and strength changes,which should be taken into account in seismic data processing,such as velocity analysis and true amplitude migration,*** order to simplify the exact but complicated formula of reflection and transmission coefficients,numerous approximate expressions for reflection and transmission coefficients for pre-critical incidence are obtained. In the post-critical case,there is Downton’s approximation with acceptable accuracy approximation when the velocity changes *** if the velocity model changes rapidly,the error will be relatively very large,limiting the use of the *** order to improve the post-critical approximation,we utilize Taylor expansion of ray parameters with angle increment(compared to critical angle) in wide-angle seismic reflection and transmission *** explicit expressions for amplitude and phase shift(time shift) for the post-critical incident angle are *** results confirm that the wide-angle seismic reflection/transmission phase shifts are strongly frequency dependent;phase shifts of low frequency wide-angle seismic waves are more predominant and their correction should be considered in seismic processing and *** examples demonstrate that(1) the accuracies of these approximations are high compared to the classic Aki’s formula and Downton’s approximation,and(2) the wide-angle effect can be effectively reduced with phase-shift correction by utilizing our time-shift approximation to the seismic traveltimes.

关键词： wide-angle seismic reflection/transmission post-critical angle amplitude phase shift time shift

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环境化学 2005年第6期 106-109页

作者： Imma Ferrer,michael Thurman,jerry Zweigenbaum University of Almeria 04120 Almeria Spai University of Almeria 04120 Almeria Spai Agilent Technologies Inc.2850 Centerville Road Wilmington DE 19808-1610 USA

本文摘要介绍了液相色谱/离子阱质谱和液相/飞行时间质谱对橄榄油中特丁津的定性定量分析.详细介绍了样品处理,包括液液萃取和以氨基硅胶为基质分散的固相萃取法.样品的净化采用Florisil硅土小柱,用乙腈洗脱溶质.液相色谱/离子阱质谱的m... 详细信息

本文摘要介绍了液相色谱/离子阱质谱和液相/飞行时间质谱对橄榄油中特丁津的定性定量分析.详细介绍了样品处理,包括液液萃取和以氨基硅胶为基质分散的固相萃取法.样品的净化采用Florisil硅土小柱,用乙腈洗脱溶质.液相色谱/离子阱质谱的mS/mS模式采集特征离子m/z174.而利用液相/飞行时间质谱进行精确质量数分析(\[m+H\]+,m/z230),同时得到碎片的精确质量数和特征同位素分布.对于飞行时间质谱测得的质量精度小于ppm.此方法具有高灵敏度、线性好及精度高的优点.液相/离子阱质谱和飞行时间质谱可以作为橄榄油中特丁津的常规方法.

关键词：飞行时间质谱橄榄油离子阱质谱特丁津家得便质量数特征离子分子离子峰液相色谱液体色谱离子流同位素分布除草剂除莠剂

液相色谱/离子阱质谱和飞行时间质谱分析橄榄油中的特丁津除草剂

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环境化学 2005年第6期24卷 735-738页

作者： Imma Ferrer michael Thurman jerry Zweigenbaum University of Almeria 04120 AlmeriaSpai University of Almeria04120 AlmeriaSpai Agilent TechnologiesInc.2850 Centerville Road WilmingtonDE 19808-1610 USA

关键词：飞行时间质谱离子阱质谱液相色谱橄榄油质谱分析除草剂定性定量分析样品处理质量精度固相萃取法

表面电子激发态动力学和光化学动力学的飞秒双光子光电了能谱仪

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Chinese Journal of Chemical Physics 2010年第3期23卷 255-261,I0001页

作者：任洋峰周传耀马志博肖春雷毛新春戴东旭 jerry LaRueb Russell Cooper Alec m. Wodtke 杨学明中国科学院大连化学物理研究所分子反应动力学国家重点实验室大连116023 加州大学圣芭芭拉分校化学与生物化学系 CA93106

搭建了一套研究金属和金属氧化物表面的超快激发态电子动力学和光化学动力学的飞秒双光子光电了能谱仪．该装置将半球形电了能量分析仪和成像技术相结合，同时测量光电子的能帚和角度分布．通过mach—Zehnder干涉仪测量时间分辨的双光... 详细信息

搭建了一套研究金属和金属氧化物表面的超快激发态电子动力学和光化学动力学的飞秒双光子光电了能谱仪．该装置将半球形电了能量分析仪和成像技术相结合，同时测量光电子的能帚和角度分布．通过mach—Zehnder干涉仪测量时间分辨的双光子光电子能谱获得超快激发电子态的动力学信息．这一功能在Cu（111）上得到了证实．另外还发展了一个通过实时测量双光子光电子能谱来研究表面光化学的方法，并成功应用到CH3CH2OH／TiO2（110）体系．研究表明，只有将两种方法结合起来才能正确地研究光诱导的表面激发共振的动力学．

关键词：飞秒双光子光电了能谱时间分辨表面超快激发态电子动力学,表面光化学动力学

Spatial variation of carbon dioxide fluxes in corn and soybean fields

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Agricultural Sciences 2012年第8期3卷 986-995页

作者： jerry L. Hatfield Timothy B. Parkin Laboratory Director and Plant Physiologist USDA-ARS National Laboratory for Agriculture and the Environment University Blvd Ames USA Soil microbiologist USDA-ARS National Laboratory for Agriculture and the Environment University Blvd Ames USA

Spatial variation of soil carbon dioxide (CO2) flux during a growing season within corn and soybean canopies has not been quantified. These cropping systems are the most intense in the United States and the potential for carbon (C) sequestration in these systems through changes in soil management practices create an opportunity for reduction in greenhouse gas emissions;however, the need to understand the variation in fields is critical to evaluating changes in management systems. A study was designed to evaluate the spatial variation in soil CO2 fluxes along two transects in corn and soybean fields. Samples were collected every 5 m along a 100 m transect between the rows of the crop and also along a transect in which the plants had been removed to reduce the potential of root respiration. Soil CO2 fluxes were collected at each position with air temperature, soil temperature at 0.05 m, and soil water content (0 - 0.06 m). At the end of the season, soil samples for the upper 0.1 m were collected for soil organic C content, pH, sand, silt, and clay contents. On each day measurements were made, the observed CO2 emissions were scaled by dividing the CO2 flux at each position by the mean CO2 flux of the entire transect. Observed CO2 fluxes were signifycantly larger in the row than in the fallow position for both crops. There were no differences between the corn and soybean fallow transects;however, the corn row samples were larger than the soybean row samples. No consistent spatial patterns were observed in the CO2 fluxes or any of the soil properties over the course of the study. When the CO2 flux data were combined over the season, there was a significant spatial pattern in the fallow transects for both crops but not for the row transects. Sampling for CO2 flux values in cropping systems has to consider the presence of a crop canopy and the amount of root respiration.

关键词： Spatial Variation Transects Soil Organic matter Soil Temperature Soil moisture Soil Texture