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pH-mediated synthesis of monodisperse gold nanorods with quantitative yield and molecular level insight

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Nano Research 2021年第4期14卷 1167-1174页

作者： Reese Gallagher Xing Zhang anthony Altomare David Lawrence jr. Nicholas Shawver Ninh Tran Melanie Beazley Gang Chen Department of Chemistry University of Central FloridaOrlando32816USA

Although gold nanorods(GNRs)have been produced with different dimensions and aspect ratios,the current synthesis methods through seed-mediated growth are far from ideal,for instance,the quality(rod yield)and the quantity(gold conversion)cannot be simultaneously *** critically,there is no molecular level understanding of the growth ***,we solved the problem by employing the stoichiometric ratio of reactants and tuning the reactivity of the reductant through adjusting the initial pH value of the growth solution to achieve both good quality and high quantity *** also extended our strategy to other enols besides ascorbic acid,such as phenolic compounds,and found that the optimal pH for GNRs synthesis depends on the structure of the individual *** mechanistic insight greatly enriches the toolbox of reductants for GNRs growth and makes it possible to synthesize GNRs at both acidic and basic *** interesting phenomenon is that for most of the phenolic compounds we tested,the morphology of the final products follows the same sphere-rod-sphere trend as the initial pH value of the reaction increases,whether it is under acidic or basic conditions,which cannot be explained by any previously proposed *** effect of pH is mainly attributed to the regulation of the reduction potential of the reductants,and thus the reaction rate.A model has been proposed to explain the dependence of anisotropic growth of GNRs on the concentration gradient of reactants around the seeds,which is decided by both the reaction rate and diffusion rate.

关键词： gold nanorods gold conversion yield shape homogeneity pH value reduction potential concentration gradient

Short communication: Supplementing with vitamin E may alter the fibrinolytic capacity of cattle

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Open Journal of Animal Sciences 2013年第2期3卷 114-120页

作者： anthony K. McNeel Alfred R. Menino jr. Department of Animal Sciences Oregon State University Corvallis USA Department of Animal Sciences Oregon State University Corvallis USA

Vitamin E supplementation has been reported to decrease the incidence of cystic ovarian disease (COD) and retained placenta (RP) in cattle however the mechanism of action is not known. In humans, vitamin E supplementation twofold the daily requirements decreases plasma plasminogen activator inhibitor-1 (PAI-1) activity. As proteolysis may be involved in both COD and RP, vitamin E may be reducing these disorders in cattle through its effects on PAI-1. To evaluate the effects of vitamin E on plasma PAI-1 activity in cattle, six non-lactating beef cows (n = 3 per treatment) were injected with 0 (Control) or 2750 IU of vitamin E (Vitamin E) IM once every four days for 24 days (Day 0 = first day of treatment). Blood samples were collected every two days for 28 days starting on Day 0 and plasma PAI-1 and tissue-type plasminogen activator (tPA) concentrations and activities were determined. No differences (P > 0.05) were observed due to vitamin E supplementation in plasma PAI-1 and tPA concentrations and activities or concentrations and activities adjusted relative to the Day 0 value for each cow. Day of treatment was a significant effect in all tPA measurements. The ratio of adjusted PAI-1 to tPA concentrations did not differ (P > 0.05) due to vitamin E supplementation however the ratio of PAI-1 to tPA activity tended to be greater (P = 0.097) in Control compared to Vitamin E cows (1.0 ± 0.1 and 0.7 ± 0.1, respectively). These data suggest vitamin E supplementation may contribute to the reduced incidence of COD and RP in cattle by shifting the ratio of plasma PAI-1 to tPA activity to a state favoring proteolysis.

关键词： Bovine Cystic Ovarian Disease Retained Placenta Fibrinolysis

Steatotic livers are susceptible to normothermic ischemiareperfusion injury from mitochondrial Complex-Ⅰ?dysfunction

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World Journal of Gastroenterology 2016年第19期22卷 4673-4684页

作者： Michael JJ Chu Rakesh Premkumar anthony jr.Hickey Yannan Jiang Brett Delahunt anthony RJ Phillips Adam Sjr.Bartlett Department of Surgery University of Auckland School of Biological Sciences University of Auckland Maurice Wilkins Centre for Biodiscovery University of Auckland Department of Statistics University of Auckland Department of Pathology and Molecular Medicine Wellington School of Medicine University of Otago New Zealand Liver Transplant Unit Auckland City Hospital

AIM: To assess the effects of ischemic preconditioning(IPC, 10-min ischemia/10-min reperfusion) on steatotic liver mitochondrial function after normothermic ischemia-reperfusion injury(IRI).METHODS: Sixty male Sprague-Dawley rats were fed8-wk with either control chow or high-fat/high-sucrose diet inducing > 60% mixed steatosis. Three groups(n = 10/group) for each dietary state were tested:(1) the IRI group underwent 60 min partial hepatic ischemia and 4 h reperfusion;(2) the IPC group underwent IPC prior to same standard IRI; and(3) sham underwent t h e s a m e s u r g e r y w i t h o u t I R I o r I P C. H e p a t i c mitochondrial function was analyzed by oxygraphs. Mitochondrial Complex-Ⅰ, Complex-Ⅱ enzyme activity, serum alanine aminotransferase(ALT), and histological injury were ***: Steatotic-IRI livers had a greater increase in ALT(2476 ± 166 vs 1457 ± 103 IU/L, P < 0.01) and histological injury following IRI compared to the lean liver group. Steatotic-IRI demonstrated lower Complex-Ⅰ?activity at baseline [78.4 ± 2.5 vs 116.4 ± 6.0 nmol/(*** protein), P < 0.001] and following IRI [28.0 ± 6.2 vs 104.3 ± 12.6 nmol/(*** protein), P < 0.001]. Steatotic-IRI also demonstrated impaired Complex-Ⅰ?function post-IRI compared to the lean liver IRI group. Complex-Ⅱ activity was unaffected by hepatic steatosis or IRI. Lean liver mitochondrial function was unchanged following IRI. IPC normalized ALT and histological injury in steatotic livers but had no effect on overall steatotic liver mitochondrial function or individual mitochondrial complex enzyme activities. CONCLUSION: Warm IRI impairs steatotic liver Complex-Ⅰ?activity and function. The protective effects of IPC in steatotic livers may not be mediated through mitochondria.

关键词： Mitochondrial respiration Fatty liver Liver ischemia Oxidative phosphorylation Liver injury Hepatic steatosis Ischemic preconditioning

Optimizing the PMCC Algorithm for Infrasound and Seismic Nuclear Treaty Monitoring

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Open Journal of Acoustics 2014年第4期4卷 204-213页

作者： anthony M. Runco jr. James A. Louthain Dean A. Clauter Space and Missile Systems Center United States Air Force Los Angeles Air Force Base El Segundo CA USA Leidos Inc. Beavercreek OH USA Air Force Technical Applications Center United States Air Force Patrick Air Force Base Cocoa Beach FL USA

We introduce novel methods to determine optimum detection thresholds for the Progressive Multi-Channel Correlation (PMCC) algorithm used by the International Data Centre (IDC) to perform infrasound and seismic station-level nuclear-event detection. Receiver Operating Characteristic (ROC) curve analysis is used with real ground truth data to determine the trade-off between the probability of detection (PD) and the false alarm rate (FAR) at various detection thresholds. Further, statistical detection theory via maximum a posteriori and Bayes cost approaches is used to determine station-level optimum “family” size thresholds before detections should be considered for network-level processing. These threshold-determining methods are extensible for family-characterizing statistics other than “size,” such as a family’s collective F-statistic or signal-to-noise ratio (SNR). Therefore, the reliability of analysts’ decisions as to whether families should be preserved for network-level processing can only benefit from access to multiple, independent, optimum decision thresholds based upon size, F-statistic, SNR, etc.

关键词： Progressive Multi-Channel Correlation PMCC Infrasound Nuclear Treaty Monitoring Detection Optimization

Exploring Factors Influencing Species Natural Regeneration Response Following Harvesting in the Acadian Forests of New Brunswick

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Open Journal of Forestry 2016年第3期6卷 199-215页

作者： Lee Salmon John A. Kershaw jr. anthony R. Taylor Marek Krasowski Michael B. Lavigne Faculty of Forestry and Environmental Management University of New Brunswick Fredericton Canada Natural Resources Canada Canadian Forest Service—Atlantic Forestry Centre Fredericton Canada

In the Acadian Forest Region of northeastern North America, forest managers are under increasing public pressure to restore the forest to a more historic, natural condition by reducing in clearcutting and promoting partial-cut treatments that more closely emulate historic, local natural disturbance regimes. However, although numerous studies on the effects of partial-cutting on forest regeneration response have been conducted in surrounding temperate and boreal forest ecosystems, there are few studies that directly explore responses to various forms of harvesting within the Acadian Forest ecosystem, with its unique mixture of northern hardwoods and boreal forest species. Here, we conducted one of the first retrospective studies on forest regeneration following a variety of harvesting methods in the Acadian Forest using univariate and multivariate regression trees to assess regeneration response in 50 naturally-regenerating, harvested forest sites in New Brunswick, Canada. Our study shows that regeneration was highly influenced by harvest type, overstory composition, and environmental conditions as reflected by ecoregion classification. Canopy opening size (as controlled by harvest method) significantly influenced the dominance of regenerating species. The presence of conspecific overstory trees increased the likelihood of their regeneration following disturbance, supporting the direct-regeneration hypothesis, especially for species with limited seed dispersal (e.g., sugar maple (Acer saccharum Marsh.) and American beech (Fagus grandifolia Ehrh.). Despite reported problems elsewhere in eastern North America, neither American beech nor balsam fir (Abies balsamea (L.) Mill.) constituted significant competition for the desired species on a broad scale, but the presence of beech was a significant deterrent for yellow birch (Betula alleghaniensis Britt.).

关键词： Tolerant Hardwood Management Regeneration Dynamics Time Since Harvest Opening Size Residual Overstory Acadian Forest Region Regression Trees

The Art of Publishing

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Journal of Modern Accounting and Auditing 2011年第2期7卷 125-133页

作者： anthony H. Catanach jr.Bill N. Schwartz Department of Accounting Villanova University USA Wesley J. Howe School of TechnologyManagement Stevens Institute of TechnologyUSA

This paper＇s goal is to help accounting academics better navigate the editorial review process to increase the likelihood of a manuscript＇s publication. The authors draw on their years of experience as active scholars, reviewers, and editors of academic journals to provide practical insights on manuscript preparation, submission, and revision. Specific topics include （1） selecting an appropriate journal, （2） choosing an appropriate strategy to address a research question, （3） organizing a paper＇s structure including the abstract, motivation section, literature review, implications and conclusions, （4） writing style and （5） revising a manuscript.

关键词： publishing research journal submission

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“最佳”CFO的特质

新理财（公司理财） 2013年第10期 102-103页

作者： Noah P.Barsky anthony H.Catanach jr.

市场混乱让CFO的更替如走马灯一般频繁，也改变了备受追捧的财务技能。动荡带来变化，市场动荡也造成了企业高级管理层的更迭。

关键词： CFO 企业高级管理层特质市场混乱财务技能马灯

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“最佳”首席财务官的特质

中国总会计师 2015年第4期 152-154页

作者： Noah P.Barsky anthony H.Catanach jr. 美国注册管理会

如果您经常阅读商业文章,就会知道已经有人指出,市场动荡造成的绩效压力是导致CFO不堪重负、流动率不断提高的重要原因。但最近的研究结果显示,流动率屡创新高也可能是因为企业需要更优秀的CFO,以便应对不断变化的市场结构和新战略。因... 详细信息

如果您经常阅读商业文章,就会知道已经有人指出,市场动荡造成的绩效压力是导致CFO不堪重负、流动率不断提高的重要原因。但最近的研究结果显示,流动率屡创新高也可能是因为企业需要更优秀的CFO,以便应对不断变化的市场结构和新战略。因此,围绕CFO的能力出现诸多争议也就不足为奇了。（请参阅《优秀CFO的特质》一文,作者：Andrew Sawers,***,2012年5月18日。）那么到底什么才重要？

关键词：首席财务官特质市场结构 CFO 企业需要流动率商业

Impact of transjugular intrahepatic porto-systemic shunt on post liver transplantation outcomes: Study based on the United Network for Organ Sharing database

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World Journal of Hepatology 2017年第2期9卷 99-105页

作者： Khalid Mumtaz Sherif Metwally Rohan M Modi Nishi Patel Dmitry Tumin anthony J Michaels James Hanje Ashraf El-Hinnawi don Hayes jr.Sylvester M Black Wexner Medical Center Gastroenterology Hepatology and Nutrition Division the Ohio State University Department of Internal Medicine the Ohio State University Department of Pediatrics the Ohio State University Department of Surgery the Ohio State University Section of Pulmonary Medicine the Ohio State University

AIMTo determine the impact of transjugular intrahepatic porto-systemic shunt (TIPS) on post liver transplantation (LT) outcomes. METHODSUtilizing the United Network for Organ Sharing (UNOS) database, we compared patients who underwent LT from 2002 to 2013 who had underwent TIPS to those without TIPS for the management of ascites while on the LT waitlist. The impact of TIPS on 30-d mortality, length of stay (LOS), and need for re-LT were studied. For evaluation of mean differences between baseline characteristics for patients with and without TIPS, we used unpaired t-tests for continuous measures and χ2 tests for categorical measures. We estimated the impact of TIPS on each of the outcome measures. Multivariate analyses were conducted on the study population to explore the effect of TIPS on 30-d mortality post-LT, need for re-LT and LOS. All covariates were included in logistic regression analysis. RESULTSWe included adult patients (age ≥ 18 years) who underwent LT from May 2002 to September 2013. Only those undergoing TIPS after listing and before liver transplant were included in the TIPS group. We excluded patients with variceal bleeding within two weeks of listing for LT and those listed for acute liver failure or hepatocellular carcinoma. Of 114770 LT in the UNOS database, 32783 (28.5%) met inclusion criteria. Of these 1366 (4.2%) had TIPS between the time of listing and LT. We found that TIPS increased the days on waitlist (408 ± 553 d) as compared to those without TIPS (183 ± 330 d), P P P = 0.001) by TIPS to LOS. CONCLUSIONTIPS did increase time on waitlist for LT. More importantly, TIPS was not associated with 30-d mortality and re-LT, but it did lengthen hospital LOS after transplantation.

关键词： Transjugular intrahepatic porto-systemic shunt Shunt Liver Transplantation Ascites Model for end-stage liver disease Mortality Transjugular