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Seasonal variability in CDOM absorption and fluorescence properties in the Barataria Basin,Louisiana,USA

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Journal of Environmental Sciences 2010年第10期22卷 1481-1490页

作者： Shatrughan Singh Eurico D'Sa erick Swenson Department of Oceanography and Coastal Sciences Louisiana State University

Absorption and fluorescence properties of chromophoric dissolved organic matter （CDOM） along a 124 km transect in the Barataria Basin, a large estuary located in Louisiana, USA, were investigated during high and low flow periods of the Mississippi River in the spring and winter of 2008-2009. Mean CDOM absorption at 355 nm from the marine to the freshwater end member stations ranged from （3.25 ± 0.56） to （20.76 ± 2.43） m^-1 for the three month high flow period whereas it varied from （1.48 ± 1.08） to （25.45 ± 7.03） m^-1 for the same stations during low flow period. Corresponding salinity values at these stations indicated the influence of river and shelf exchanges in the lower basin and precipitation and runoff in the upper basin. An inverse relationship of CDOM absorbance and fluorescence with salinity observed in the basin could he a useful indicator of salinity. CDOM fluorescence also varied over a large range showing an approximately 8 to 12-fold increase between the marine and freshwater end members for the two flow seasons. Excitation-emission matrix spectral plots indicated the presence of various fluorescence components with highest being the A-peak, lowest the T-peak, and the C and M-peaks showing similar trends along the transect. During low flow season the A/C ratio were well correlated with station locations indicating increased terrestrial influence towards the upper basin. CDOM absorption and fluorescence at 355 nm were highly correlated and independent of CDOM sources suggesting that fluorescence could be used to characterize CDOM in the basin.

关键词： Barataria Basin chromophoric dissolved organic matter CDOM fluorescence excitation-emission matrix

Professor Arnold L.(“Arny”)Demain (1927-2020):leaving a legacy in the field of Industrial Microbiology and Biotechnology;a personal appraisal

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Synthetic and Systems Biotechnology 2020年第4期5卷 324-327页

作者： erick J.Vandamme Dept.Biotechnology Centre for Industrial Biotechnology and Synthetic BiologyFac.Bioscience EngineeringGhent UniversityGhentBelgium

*** This article is a tribute to-and sadly-an“in memoriam”of Professor Arnold(Arny)***(born 26 April,1927,Brooklyn,New York,USA–deceased on 3 April 2020,Madison,New Jersey,USA).It aims to illustrate his worldwide impact over six decades in the field of industrial microbiology and biotechnology and to testify of his great ability to establish cordial personal human relationships and to create social networks with his students,former collaborators and also with the research and corporate biotech-sector worldwide.

关键词： field illustrate Arnold

Unusual presentations of eosinophilic gastroenteritis:Case series and review of literature

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World Journal of Gastroenterology 2009年第17期15卷 2156-2161页

作者： Rafiq A Sheikh Thomas P Prindiville R erick Pecha Boris H Ruebner Department of Gastroenterology Kaiser Permanente Medical Center 6600 Bruceville Road SacramentoCA 95823 United States Department of Gastroenterology University of California Davis 4150 V Street Sacramento CA95917 United States Department of Gastroenterology Marshall Medical Center 1100 Marshall Way Placerville CA 95667 United States Department of Pathology University of California Davis 4150 V Street Sacramento CA 95917 United States

Eosinophilic gastroenteritis (EG) is an uncommon disease characterized by focal or diffuse eosinophilic infiltration of the gastrointestinal tract, and is usually associated with dyspepsia, diarrhea and peripheral eosinophilia. Diffuse gastrointestinal tract and colonic involvement are uncommon. The endoscopic appearance may vary from normal to mucosal nodularity and ulceration. Gastrointestinal obstruction is unusual and is associated with predominantly muscular disease. We present five unusual cases of EG associated with gastric outlet and duodenal obstruction. Two cases presented with acute pancreatitis and one had a history of pancreatitis. Four cases responded well to medical therapy and one had recurrent gastric outlet obstruction that required surgery. Four out of the five cases had endoscopic and histological evidence of esophagitis and two had colitis. Two patients had ascites. These cases reaffirm that EG is a disorder with protean manifestations and may involve the entire gastrointestinal tract. Gastric outlet and/or small bowel obstruction is an important though uncommon presentation of EG. It may also present as esophagitis, gastritis with polypoid lesions, ulcers or erosions, colitis and pancreatitis and may mimic malignancy.

关键词： Gastroenteritis Eosinophilic Gastrointestinal obstruction Eosinophilic esophagitis Eosinophilic colitis Eosinophilic pancreatitis

Effects of seed type and bruchid genotype on the performance and oviposition behavior of Zabrotes subfasciatus （Coleoptera： Bruchidae）

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Insect Science 2006年第4期13卷 309-318页

作者： erick D. M. CAMPAN BETTY BENREY Labomtory of Evolutionary Entomology Institute of Zoology University of Neuchatel Neuchatel Switzerland Laboratoire Dynamique de la Biodiversité Université Paul Sabatier Toulouse France

The effect of different bean varieties on the performance of the bruchid beetle Zabrotes subfasciatus Boheman （Coleoptera： Bruchidae）, was determined by using wild and cultivated seeds of the genus Phaseolus. Results showed that the quality of the host plant affected the performance and the oviposition behavior of female beetles. Overall, bruchid performance was higher on cultivated seeds than on wild seeds. It was also found that the oviposition behavior and the performance of their offspring differed between females that originated from wild versus cultivated seeds. We also demonstrated the importance of a genetic component in bruchid performance： longevity, fecundity, larval development, adult size, and the sex ratio of the progeny varied according to their matemal lineage （‘family＇）. For example, on the same host type, some females laid twice as many eggs as females from other‘families＇, and the sex ratio among the offspring correlated with that of their mother. Thus, the performance and behavior of Z. subfasciatus are not only affected by environmental factors such as the quality of the seeds on which they develop, but also have a genetic basis which can counterbalance a less suitable quality of the host plant. For a crop pest such as Z. subfasciatus, its ability to survive and adapt on host plants of differing quality may be an important attribute to consider for pest management.

关键词： bean beetles domestication host plant quality larval performance oviposition behavior

Controllable Fabrication of Spider-Web-Like Structured Anaphe Panda Regenerated Silk Nanofibers / Nets via Electrospinning / Netting

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Journal of Donghua University(English Edition) 2014年第4期31卷 497-502页

作者： DULO Benson 王娜李彦 OYONDI erick MADARA S Diana 丁彬 College of Textiles Donghua University Department of Manufacturing Industrial and Textile EngineeringMoi University State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua University

An Anaphe panda silk nanofibers / nets( NFN) membrane with attractive structures consisting of common electrospun nanofibers and two-dimensional( 2D) spider-web-like structured nano-nets were successfully fabricated via electrospinning / netting technology. The unique structures of NFN membranes such as extremely small diameter( rosity,large specific surface area. and biocompatibility make this Anaphe panda silk NFN membrane a promising candidate for biomedical applications. In the present study, field emission scanning electron microscopy( FESEM) was used to investigate the influence of polymer solution and humidity on nano-nets coverage and morphology. The FE-SEM images revealed that nano-net coverage area increased with increase in concentration of solution while lowering the humidity increased the nano-nets formation. Moreover,the mechanical properties of the membrane were also tested and the result showed that the silk NFN membrane displayed a breaking stress of 3. 7 MPa and breaking strain of 13. 8%. For further structural elucidation, Fourier transform infrared spectroscopy( FT-IR) was used to analyze the structural conformation changes from random coil to β-sheet in the NFN membrane which was an important factor effecting the usability of membrane. Thus,the results above confirmed the feasibility of Anaphe panda NFN structures applicability in cell tissue culture and other biomedical applications.

关键词： Anaphe panda silk electrospinning / netting nanofibers / nets(NFN) biocompatibility

The Effect of Market Orientation and Entrepreneurial Orientation on the Performance of Smes in Tanzania

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The Effect of Market Orientation and Entrepreneurial Orienta...

作者： erick .C. Marunda 江苏大学

学位级别：硕士

在向客户提供优质的产品(商品和服务)时,市场导向一直是企业新产品成功的非常有用的工具。但是,先前的研究表明,某些潜在变量可能会影响市场定位与新产品性能之间的关系。中小企业(SME)在经济增长,创新和创造就业机会方面发挥着重要作用... 详细信息

在向客户提供优质的产品(商品和服务)时,市场导向一直是企业新产品成功的非常有用的工具。但是,先前的研究表明,某些潜在变量可能会影响市场定位与新产品性能之间的关系。中小企业(SME)在经济增长,创新和创造就业机会方面发挥着重要作用,因为它们在创造就业机会和公司数量方面占据着全球经济的主导地位。尽管市场导向和企业家导向对中小企业的成功与生存至关重要,尤其是在最不发达经济体中,但中小企业却很少了解和做不到将这些战略纳入其业务流程的工作。中小企业需要建立并纳入市场导向和创业导向战略,以应对不断变化的商业条件的复杂性这项研究试图评估市场导向和创业导向对坦桑尼亚中小型企业业绩的影响。这项研究的数据是使用结构化问卷从330个来自坦桑尼亚三个省的工业,服务业和制造业的中小企业样本中获得的。借助SPSS和Smart PLS v.3.2.7软件,使用结构方程模型分析了该研究的数据。目标之一评估了坦桑尼亚中小企业绩效的市场导向的影响。这项研究的结果表明,市场导向与公司绩效之间存在积极而显着的关系。另一方面,第二个目标旨在评估创业导向对公司绩效的影响。另一方面,目标三研究了市场导向与创业导向之间的关系。最后,第四个目标研究了创新是否介导了市场导向与中小企业绩效之间的关系。这项研究的结果表明,市场导向与中小企业绩效之间存在正相关关系。这导致了对H1的接受。Beta得分(0.737)意味着,当MO增长1%时,预计SME绩效将增长约73.7%。第二个目标还表明,创业导向与中小企业绩效之间存在正相关关系。Beta得分(0.336)表示,当EO增长1%时,公司绩效也会升值约33.6%。此外,关于第三个目标的发现表明,MO对EO具有积极且显着的影响,从而支持了假设3。Beta得分(0.762)表明,MO对EO的影响约为76.2%。这表明,MO和EO之间有很强的相关性。最后,第四个目标表明,创新可以调节市场定位与中小企业绩效之间的关系。VAF值表明,间接影响可解释外部变量对公司绩效的总影响的56.4%以上。根据研究结果,研究得出结论,MO和EO均可以提高SME的绩效。这项研究为发展中经济体尤其是坦桑尼亚的中小型企业之间的MO绩效和EO绩效关系提供了新的见解。因此,本研究的结果进一步表明,EO和MO可以帮助公司成为创新的,积极进取的冒险者,以便对客户,竞争对手和他们的员工有深刻的了解,以实现他们的公司目标。该研究建议中小型企业有效和有效地利用其知识,以实现本研究中从创业和作为市场导向型企业的收益或优势方面获得的收益。此外,经理或企业主也应准备冒险。当您迷路时,它可以作为将来开展业务交易的课程。当您成功时,它将增加公司的财富。

关键词：营销导向创业导向中小企业企业绩效坦桑尼亚

β-defensins and the epididymis： contrasting influences of prenatal, postnatal, and adult scenarios

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Asian Journal of Andrology 2016年第2期18卷 323-328,J0008页

作者： Camilla M Ribeiro erick JR Silva Barry T Hinton Maria Christina W Avellar Section of Experime.ntaI.Endocrinology Department of Pharmacology Universidade Federal de Sao Paulo - Escola Paulista de Medicina Sao Paulo Brazil Department of Cell Biology University of Virginia School of Medicine Charlottesville Virginia USA Present address: Department of Pharmacology Institute Of Biosciences of BotucatuUniversidade Estadual Paulista 'Julio de Mesquita Filho' Botucatu Sao Paulo 186).8-970 Brazil.

β-defensins are components of host defense, with antimicrobial and pleiotropic immuno-modulatory properties. Research over the last 15 years has demonstrated abundant expression of a variety of β-defensins in the postnatal epididymis of different species. A gradient of region- and cell-specific expression of these proteins is observed in the epithelium of the postnatal epididymis. Their secretion into the luminal fluid and binding to spermatozoa as they travel along the epididymis has suggested their involvement in reproduction-specific tasks. Therefore, continuous attention has been given to various β-defensins for their role in sperm function and fertility. Although β-defensins are largely dependent on androgens, the underlying mechanisms regulating their expression and function in the epididymis are not well understood. Recent investigation has pointed out to a new and interesting scenario where β-defensins emerge with a different expression pattern in the Wolffian duct, the embryonic precursor of the epididymis, as opposed to the adult epididymis, thereby redefining the concept concerning the multifunctional roles of β-defensins in the developing epididymis. In this review, we summarize some current views of β-defensins in the epididymis highlighting our most recent data and speculations on their role in the developing epididymis during the prenatal-to-postnatal transition, bringing attention to the many unanswered questions in this research area that may contribute to a better understanding of epididymal biology and male fertility.

关键词： androgens embryogenesis epididymis organogenesis β-defensins

Synthesis of Ta C and Ta_2C from tantalum and graphite in the laser-heated diamond anvil cell

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Chinese Science Bulletin 2014年第36期59卷 5283-5289页

作者： Lkhamsuren Bayarjargal Bjrn Winkler Alexandra Friedrich erick A.Juarez-Arellano Institut fr Geowissenschaften Universitt FrankfurtAltenh ferallee 1 60438 Frankfurt am Main Germany Universidad del Papaloapan Circuito Central 200 Parque Industrial 68301 Tuxtepec Mexico

The pressure dependence of the onset of the formation of Ta C and Ta2 C from the elements has been investigated by in situ X-ray diffraction and *** C has been synthesized by the reaction of Ta and graphite at pressures between 8.6 and 14.3 GPa and at temperatures up to 2,300 K using a laser-heated diamond anvil cell. The products were characterized by X-ray diffraction. Ta and graphite begin to react around 1,100 K at ambient pressure conditions, and the reaction temperature increases with increasing pressure. A linear extrapolation of these data is consistent with recent observations of the formation of Ta C at 90 GPa and 3,600 K. We show that diffusion of carbon into tantalum significantly changes the lattice parameter of up to 2 % in the pressure range of up to19 GPa. In some experiments, Ta2 C was formed concomitantly. The experimentally determined bulk modulus of Ta2 C is B0;exp:= 286(5) GPa. Other tantalum carbide phases were not observed.

关键词：细胞合成激光加热碳化钽金刚石石墨原位X射线衍射压力依赖性反应温度

Identification of the distinguishing features of Crohn’s disease and ischemic colitis using computed tomographic enterography

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Gastroenterology Report 2017年第3期5卷 219-225,I0002页

作者： Min Chen erick M.Remer Xiuli Liu rocio Lopez Bo Shen Department of Gastroenterology/Hepatology Cleveland Clinic FoundationClevelandOHUSA Department of Gastroenterology Zhongnan Hospital of Wuhan UniversityWuhanHubeiChina Section of Abdominal Imaging Imaging InstituteCleveland Clinic FoundationClevelandOHUSA

Background and aims:The differential diagnosis between Crohn’s disease(CD)and ischemic colitis(ISC)is important as their clinical management is *** can easily be misdiagnosed as CD,especially in elderly *** distinctive radiographic features of the two disease entities have not been *** aim of this study is to assess the utility of computed tomographic enterography(CTE)in the differential diagnosis between CD and ***:Patients with confirmed CD and ISC were identified through an electronic medical record search of the Cleveland Clinic *** who had undergone CTE,with or without concurrent colonoscopy and histopathological specimens,were included in this *** images were blindly re-reviewed by an expert gastrointestinal *** sensitivities,specificities,accuracies and positive and negative predictive values for each of the CTE findings in differentiating CD from ISC were *** coefficients(j)were calculated tomeasure diagnosis agreement between CTE and the reference ***:A total of 34 eligible patients were included in this study with 17 having CD and 17 having *** differentiating CD from ISC,the presence ofmucosal hyperenhancement and absence of the“target sign”on CTE showed a sensitivity of 100% each for CD,while the two radiographic features yielded a low specificity of 35.3%and 76.5%,*** presence of stricture had a lower sensitivity of 64.7% for the detection of CD but had a high specificity of 100%.In distinguishing CD fromISC,the accuracy of presence ofmucosal hyperenhancement,stricture and absence of target sign were 67.7%,82.4% and 88.2%,*** combination of the presence ofmucosal hyperenhancement and the absence of the target sign achieved an accuracy of 100%for distinguishing CD from *** was a good correlation between CTE and the reference standard for distinguishing CD fromISC(k=0.882).Conclusions:CTE appeared to be clinically useful

关键词： computed tomographic enterography Crohn’s disease ischemic colitis differential diagnosis