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A COMPARISON OF EASTERN AND WESTERN HONG KONG PHYTOPLANKTON FROM WEEKLY SAMPLES (1997-1999)

Chinese Journal of Oceanology and Limnology 2002年第1期20卷 52-61页

作者： mike dickman 唐森铭 Jessie Lai 221 South 12th Ave. Bozeman Montana 59715 USA Institute of Geography and Limnology Chinese Academy of Sciences Nanjing 210008 China Ecology and Biodiversity Dept. The University of Hong Kong Pokfulam Rd. Hong Kong

Weekly phytoplankton samples were taken from western Hong Kong (Lamma) from Jan. 1997 to Dec. 1999 and from Port Shelter in Eastern Hong Kong from January 1998 to December 1999. During that time diatom blooms occurred repeatedly at both sites but never in synchrony. One species would bloom at one site and then weeks later it or another species would bloom at the other site; while the 1998 red tide of the mucus producing dinoflagellate Gymnodinium mikimotoi occurred at both sites. It first occurred at the Port Shelter site in March and did not appear at the Lamma site until April. With the single exception of this species, no other dinoflagellate reached bloom concentrations at the Lamma site. In addition, dinoflagellate abundance at the Lamma site was significantly lower (P <0.05) than that at the Port Shelter site. This was correlated with a significantly higher turbidity (i.e. low Secchi transparency) and higher turbulence (stronger currents) at the Lamma site. Annual variation in surface temperature correlated with total surface phytoplankton abundance at both our sample sites. Phytoplankton abundance increased in spring as water temperatures warmed. In fall, as surface water temperatures began to decline and the monsoon rains became less frequent there was a reduction in phytoplankton abundance associated with the reduction in temperature and light. Because so many variables co-occur with temperature (e.g. the amount of rainfall, light intensity and light duration etc.) it is not possible to cite temperature as the causal factor associated weth controlling phytoplankton abundance at our two sample sites. Our data support the rather controversial notion that percentage-wise, there are relatively more harmful bloom forming species in nutrient-rich coastal waters than there are in the world’s oceans. 16% of the dinoflagellate species and 10.3% of the diatom species observed at our two sample sites were classed as harmful. These percentages were higher than those ci

关键词： red tides phytoplankton periodicity South China Sea harmful algal blooms

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Toxic marine diatoms of Hong Kong:A paleoecological study

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Journal of Environmental Sciences 1997年第1期9卷 1-10页

作者： mike dickman Tom Glenwright Ecology and Biodiversity Department,The University of Hong Kong,Hong Kong Ecology Department University of Hong Kong Hong Kong Hong Kong

To determine whether toxic diatoms in Hong Kong's Victoria Harbour have become more common during the last four decades,a gravity core was taken from the anaerobic sediments of Kowloon Bay in the harbour. Analysis of these sediments from a depth of 0-1cm,4-5cm and 9-10cm indicated that 6.4%,2.4% and 1.5% of the diatoms observed at each of these three respective depths belonged to the genus Pseudonitzschia. The abundance of Pseudonitzschia frustules in the surface sediments of Victoria Harbour was significantly higher(p<0.05)than it was in the harbour's deeper and older(ca.1965)sediments. The increase in potentially toxic diatom species over the last 30 years was attributed to a variety of factors including the addition of large amounts of nutrients to Hong Kong's coastal waters as a re- sult of man's activities.

关键词： paleoecology sediment cores marine diatoms toxic diatoms Pseudonitzschia.

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Demonising the dingo： How much wild dogma is enough？

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Current Zoology 2011年第5期57卷 668-670页

作者： mike LETNIC Mathew S. CROWTHER Christopher R. dickman Euan G. RITCHIE Hawkesbury Institute for the Environment University of Western Sydney Locked Bag 1797 Penrith NSW 2751 Australia Institute of Wildlife Research School of Biological Sciences University of Sydney NSW 2006 Australia School of Life and Environmental Sciences Deakin University Burwood Victoria 3125 Australia

The roles that top predators play in regulating the structure and function of ecosystems have long been controversial. This is particularly the case when predators pose adverse risks for human life and/or economic interests. The critique of literature on dingoes and their ecological roles in Australia provided by Allen et al. （2011） shows that top predators remain a potentially polarising issue. In opposition to Allen et al. we argue that these widespread patterns of species＇ abundances, attributed to the ef- fects of dingoes and evident at scales ranging from the foraging behaviour of individuals through to continental scale patterns of species abundances, constitute strong support for the mesopredator release hypothesis and provide evidence that dingoes benefit biodiversity conservation by inducing community wide trophic cascades. Harnessing the positive ecological effects of dingoes while at the same time minimising their impacts on agriculture is a major socio-political challenge in Australia [Current Zoology 57 （5）： 668-670].

关键词： Trophic cascade Mesopredator release hypothesis Dingo fox Intra-guild predation

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STUDIES ON THE PLANKTON AND SEDIMENT DIATOMS IN XUANWU LAKE , NANJING, CHINA

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Chinese Journal of Oceanology and Limnology 1991年第3期9卷 277-289页

作者：王如平 dickman Yangzhou Education College Yangzhou 225001 Biol. Sci. Dept. Brock Univ. Ontario Canada Received Jan. 11 1990 M.D

The sediment diatom data based on a 16cm long sediment core removed from near the center of the lake indicated that nutrient pollution tolerant diatoms have replaced pollution intolerant taxa which were common near the base of the core (about 35 years before present ). These observations support the hypothesis that there is progressive eutrophication in Xuanwu Lake . This conclusion is corroborated by direct comparisons of the present day phytoplankton and zooplankton species composition within the lake and published accounts of its species composition during the mid 1970s.

关键词： removed nutrient eutrophication tolerant phytoplankton replaced conclusion biomass progressive dominated

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SGT1 Is Induced by the Potato virus X TGBp3 and Enhances Virus Accumulation in Nicotiana benthamiana

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Molecular Plant 2012年第5期5卷 1151-1153页

作者： Chang-Ming Ye Vicky Kelly Mark Payton Martin B. dickman Jeanmarie Verchot Department of Entomology and Plant Pathology Oklahoma State UniversityStillwaterOK 74078USA Department of Statistics Oklahoma State University StillwaterOK 74078USA Institute for Plant Genomics and Biotechnology Department of Plant Pathology and MicrobiologyTexas A&M UniversityCollege StationTX 77843USA

Dear Editor, Host chaperone proteinsarecritical factors in plant virus infec- tion. One ofthe most commonly identified host factors involved in plant virus infection is Hsp70, which functions in ATP hydroly- sis, protein folding, assembly of protein complexes, and translo- cation between cellular compartments. A comparative study of plant virus infection, including Potato virus X （PVX）, reported that Hsp70 is up-regulated by virus infection and possibly con- tributes to pathogenesis in both Arabidopsis and N. benthami- ana plants （Aparicio et al., 2005）. Cytosolic Hsp70 interacts with the tombusvirus and tymovirus replication complexes （Wang et al., 2009）, the potyvirus coat protein （Hafren et al., 2010）, and closteroviruses encode an HSP70 homolog that functions to enable virus intercellular transport （Agranovsky et al., 1998）.

关键词： Accumulation Potato Nicotiana

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国际干旱地区农业研究中心的种子健康检查和种质材料的处理

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植物检疫 1990年第1期4卷 78-81页

作者： M.dickman 李先誉

引言一个影响作物育种项目成功的因素是用新的、高产的抗病虫的品种来代替原有的地方品种和(或)土种。许多研究机构都在世界范围内广泛收集和保存许多植物的种质资源,在国际农业顾问组织大量提供资助的条件下,国际农业研究中心正寻求提... 详细信息

引言一个影响作物育种项目成功的因素是用新的、高产的抗病虫的品种来代替原有的地方品种和(或)土种。许多研究机构都在世界范围内广泛收集和保存许多植物的种质资源,在国际农业顾问组织大量提供资助的条件下,国际农业研究中心正寻求提高小麦、玉米、水稻、马铃薯、豆类等多种作物的产量,许多中心都建立在这些作物的发源地或邻近原产地的国家里。例如 ICRIST

关键词：种质材料鹰嘴豆种子带研究机构种质资源土种 CIMMYT 农业研究中心气候条件田间检验

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Effect of the transcutaneous electrical stimulation system on esophageal-acid exposure in patients non-responsive to once-daily proton-pump inhibitor:proof-of-concept study

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Gastroenterology Report 2021年第4期9卷 323-328,I0002页

作者： Ram dickman Sigal Levy Tsachi Tsadok Perets Maor Hazani-Pauker Doron Boltin Hemda Schmilovitz-Weiss Issa Nidal Matan Siterman Dan Carter Ronnie Fass Rachel Gingold-Belfer Department of Gastroenterology Rabin Medical CenterBeilinson CampusesPetah Tikva and Sackler Faculty of MedicineTel Aviv UniversityTel AvivIsrael Statistics Education Unit Academic College of Tel Aviv-YafoTel Aviv-YafoIsrael Department of Surgery B Rabin Medical CenterHasharon CampusPetah Tikva and Sackler Faculty of MedicineTel Aviv UniversityTel AvivIsrael Division of Gastroenterology and Hepatology Chaim Sheba Medical CenterRamat Gan and Sackler Faculty of MedicineTel Aviv UniversityTel AvivIsrael Division of Gastroenterology and Hepatology Metrohealth Medical CenterClevelandOHUSA

Background:Gastroesophageal reflux disease(GERD)is a common ***,≤35%of GERD patients fail the standard dose of proton-pump-inhibitor(PPI)*** to the high prevalence and low satisfaction rate with treatment failure,there is an unmet need for new *** aim was to evaluate whether the use of the transcutaneous electrical stimulation system(TESS)can reduce esophageal-acid exposure in GERD patients unresponsive to standard-dose ***:We enrolled 10 patients suffering from heartburn and regurgitation with an abnormal esophageal-acid exposure(off PPIs)who failed standard-dose *** the placement of a wireless esophageal pH capsule,all patients were treated with *** primary end point was the reduction in the baseline(pretreatment)24-hour percent total time pH<4 and/or DeMeester score by 50%.Results:Seven GERD patients(five females and two males,aged 49.3610.1 years)completed the *** baseline,the mean percent total time pH<4 was *** TESS,the mean percent total time pH<4 dropped to 5.563.4,4.562.6,3.762.9,and 4.462.5 on Days 1,2,3,and 4,*** baseline,the mean DeMeester score was *** TESS,the mean DeMeester score dropped to 15.869.2,13.266.8,11.269.4,and 12.066.8 on Days 1,2,3,and 4,***:TESS is a safe and potentially effective modality in reducing esophageal-acid exposure in GERD patients unresponsive to standard-dose PPI.A larger and prospective controlled study is needed to verify these preliminary results.

关键词： gastroesophageal reflux disease transcutaneous electrical stimulation system proton-pump inhibitor

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老师的科技利器

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空中英语教室（高级版．彭蒙惠英语） 2009年第9期 34-35,47-48页

作者： Allyson dickman

有些学校不但容忍学生在教室里回嘴，甚至还鼓励这种行为呢，这是因为：教室里多了新型互动式学习设备。据估计，美国马里兰州的国、高中教室有65％都装了电脑驱动的触碰式屏幕白板、投影机、学生反应指示器、扩音器和电脑软体，还有24... 详细信息

有些学校不但容忍学生在教室里回嘴，甚至还鼓励这种行为呢，这是因为：教室里多了新型互动式学习设备。据估计，美国马里兰州的国、高中教室有65％都装了电脑驱动的触碰式屏幕白板、投影机、学生反应指示器、扩音器和电脑软体，还有24所小学也装设了相同设备。所有这些科技装置全都购自“普罗米修斯”（译注：Promethean其实是形容词，Prometheus是神话英雄，从众神之处盗火给人类使用，该公司希望能让“教室中永燃学习之火”，因此而命名）这家在英国起家的学习科技公司。

关键词：科技公司互动式学习利器老师普罗米修斯马里兰州神话英雄教室

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防老剂对不同厚度橡胶试样应力松弛的影响

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橡胶译丛 1985年第4期 9-14页

作者： O.dickman 王毓琪

应力松弛的测定是压用具有不同厚度的填充炭黑的天然胶试样在含有或没有防老剂(6PPD单苯基对苯二胺)的情况下,升高温度,进行拉伸和压缩试验。结果表明,松弛速率随试样厚度的减小而增大。加入防老剂可减少不同厚度试样间的松弛速率的差... 详细信息

应力松弛的测定是压用具有不同厚度的填充炭黑的天然胶试样在含有或没有防老剂(6PPD单苯基对苯二胺)的情况下,升高温度,进行拉伸和压缩试验。结果表明,松弛速率随试样厚度的减小而增大。加入防老剂可减少不同厚度试样间的松弛速率的差异。两种不同材料松弛曲线间的差异,是由于防老剂的影响,以及在没有防老剂的材料中则是由于表层形成坚硬氧化层的结果。在没有防老剂的试样表面较早形成的氧化层,可以防止试样内部与氧接触,对于较厚的试祥,其表面形成的氧化层则意味着试样只有一小部分降解了,因此对应力松弛性能的影响程度就很小,这就使得防老剂在厚壁层试样的这类测试中显得似乎作用很小。

关键词：防老剂抗老剂应力松弛材料动态性质不同厚度橡胶弹性体

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急性环-枢椎联合骨折的神经外科处理

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冶金医药情报 1989年第6期6卷 212-213页

作者： dickman CA 刘卫平

本文作者报告25例急性环-枢椎联合骨折的诊治与随访结果。

关键词：枢椎急性联合骨折神经外科随访结果处理诊治

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