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Evaluation of biostimulation and Tween 80 addition for the bioremediation of long-term DDT-contaminated soil

journal of Environmental Sciences 2015年第2期27卷 101-109页

作者： Bibiana Betancur-Corredor nancy j.pino Santiago Cardona Gustavo A.Peuela GDCON Research Group Faculty of Engineering University Research Headquarters (SIU) University of Antioquia School of Geosciences and Environment Faculty of Mines National University of Colombia School of Microbiology University of Antioquia

The bioremediation of a long-term contaminated soil through biostimulation and surfactant addition was evaluated. The concentrations of 1,1,1-trichloro-2,2-bis（4-chlorophenyl）ethane（DDT） and its metabolites 1,1-dichloro-2,2-bis（4-chlorophenyl） ethane（DDD） and1,1-dichloro-2,2-bis（4-chlorophenyl） ethylene（DDE） were monitored during an 8-week remediation process. Physicochemical characterization of the treated soil was performed before and after the bioremediation process. The isolation and identification of predominant microorganisms during the remediation process were also carried out. The efficiency of detoxification was evaluated after each bioremediation protocol. Humidity and p H and the heterotrophic microorganism count were monitored weekly. The DDT concentration was reduced by 79% after 8 weeks via biostimulation with surfactant addition（B ＋ S） and 94.3%via biostimulation alone（B）. Likewise, the concentrations of the metabolites DDE and DDD were reduced to levels below the quantification limits. The microorganisms isolated during bioremediation were identified as Bacillus thuringiensis, Flavobacterium sp., Cuprivadius sp.,Variovorax soli, Phenylobacterium sp. and Lysobacter sp., among others. Analysis with scanning electron microscopy（SEM） allowed visualization of the colonization patterns of soil particles. The toxicity of the soil before and after bioremediation was evaluated using Vibrio fischeri as a bioluminescent sensor. A decrease in the toxic potential of the soil was verified by the increase of the concentration/effect relationship EC50 to 26.9% and 27.2% for B ＋ S and B, respectively, compared to 0.4% obtained for the soil before treatment and 2.5%by natural attenuation after 8 weeks of treatment.

关键词： DDT Soil Bioremediation Biostimulation Surfactant Toxicity

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Sorbents with high efficiency for CO2 capture based on amines-supported carbon for biogas upgrading

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journal of Environmental Sciences 2016年第10期28卷 138-150页

作者： Lidia pino Cristina Italiano Antonio Vita Concetto Fabiano Vincenzo Recupero CNR Institute of Aduanced Technology for Energy "Nicola Giordano" Via S. Lucia 5 98126 Messina Italy

Sorbents for CO2 capture have been prepared by wet impregnation of a commercial active carbon （Ketjen-black, Akzo Nobel） with two CO2-philic compounds, polyethylenimine （PEI） and tetraethylenepentamine （TEPA）, respectively. The effects of amine amount （from 10 to 70 wt.%）, CO2 concentration in the feed, sorption temperature and gas hourly space velocity on the CO2 capture performance have been investigated. The sorption capacity has been evaluated using the breakthrough method, with a fixed bed reactor equipped with on line gas chromatograph. The samples have been characterized by N2 adsorption-desorption, scanning electron microscopy and energy dispersive X-ray （SEM/EDX）. A promising CO2 sorption capacity of 6.90 mmo1/gsorbent has been obtained with 70 wt.% of supported TEPA at 70℃ under a stream containing 80 vol% of CO2. Sorption tests, carried out with simulated biogas compositions （CH4/CO2 mixtures）, have revealed an appreciable CO2 separation selectivity; stable performance was maintained for 20 adsorption-desorption cycles.

关键词： CO2 capturePEI-TEPA based sorbentsAmine efficiencyBiogasSeparation selectivity

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Nitrogen deposition and reduction of terrestrial biodiversity:Evidence from temperate grasslands

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Science China(Life Sciences) 2005年第z2期48卷 720-728页

作者： nancy B.Dise Carly j.Stevens Department of Earth Sciences Open University Milton KeynesMK7 6AAUK Department of Biology Villanova UniversityVillanovaPA 19085USA Department of Agricultural Science Imperial College at WyeWyeAshfordTN25 4NJUK

Biodiversity is thought to be essential for ecosystem stability, function and long-term sustainability. Since nitrogen is the limiting nutrient for plant growth in many terrestrial ecosystems, reactive nitrogen has the potential to reduce the diversity of terrestrial vegetation and associated biota through favouring species adapted to quickly exploiting available nutrients. Although the potential has long been recognised, only recently has enough evidence come together to show beyond reasonable doubt that these changes are already occurring. Linked together, experimental, regional/empirical, and time-series research provide a powerful argument that enhanced deposition of reactive nitrogen across Great Britain, and potentially the rest of Europe, has resulted in a significant and ongoing decline in grassland species richness and diversity.

关键词： nitrogen deposition, terrestrial biodiversity, temperate grasslands.

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Gastroprotection during long-term dual antiplatelet therapy:to give or not to give?

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journal of Geriatric Cardiology 2021年第11期18卷 973-974页

作者： Francesco Sbrana Andrea Ripoli Beatrice Dal pino Fondazione Toscana“Gabrielel Monasterio” Via Giuseppe Moruzzi 1PisaItaly

Dear Editor,We read with interest Kim j,et ***“Poten-tially inappropriate prescribing of cardiovascular system and antiplatelet/anticoagulant drugs among elderly patients:a Korean population-based nation-al study”[1]highlighting that the more frequent po-tentially inappropriate prescribing was,in elderly subjects,the non-steroidal anti-inflammatory drug with concurrent antiplatelet agent without proton-pump inhibitor prophylaxis(PPI).

关键词： antiplatelet al. drugs

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Gastric cancer in Alaska Native people: A cancer health disparity

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World journal of Gastroenterology 2018年第25期24卷 2722-2732页

作者： Holly A Martinson nancy j Shelby Steven R Alberts Matthew j Olnes WWAMI School of Medical Education University of Alaska Anchorage Department of Oncology Mayo Clinic Cancer Center Hematology and Medical Oncology Department Alaska Native Medical Center

AIM To evaluate recent trends in gastric cancer incidence, response to treatment, and overall survival among Alaska Native(AN) people. METHODS A retrospective analysis of the Alaska Native Medical Center patient database was performed. Patient history, clinical, pathological, response to treatment and patient outcomes were collected from one-hundred and thirty-two AN gastric cancer patients. The Surveillance, Epidemiology and End Result database 18 was used to collect comparison United States non-Hispanic White(NHW) and AN gastric cancer patient data between *** AN gastric cancer patients have a higher incidence rate, a poorer overall survival, and are diagnosed at a significantly younger age compared to NHW patients. AN patients differ from NHW patients in greater prevalence of non-cardia, diffuse subtype, and signet ring cell carcinomas. AN females were more likely to be diagnosed with later stage cancer, stage IV, compared to AN males. Diminished overall survival was observed among AN patients with increasing stage, O+ blood type, < 15 lymph nodes examined at resection, and no treatment. This study is the first report detailing the clinicopathologic features of gastric cancer in AN people with outcome *** Our findings confirm the importance of early detection, treatment, and surgical resection for optimizing AN patient outcomes. Further research on early detection markers are warranted.

关键词： Alaska Native gastric cancer Helicobacter pylori gender health disparities

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Effects of Gamma Irradiation for Sterilization on Aqueous Dispersions of Length Sorted Carbon Nanotubes

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Nano Research 2011年第4期4卷 393-404页

作者： jeffrey A. Fagan nancy j. Lin Rolf Zeisler Angela R. Hight Walker Polymers Division National Institute of Standards and Technology Gaithersburg MD 20899 USA Analytical Chemistry Division National Institute of Standards and Technology Gaithersburg MD 20899 USA Optical Technology Division. National Institute of Standards and Technology Gaithersburg MD 20899. USA

There is currently great interest in the potential use of carbon nanotubes as delivery vessels for nanotherapeutics and other medical applications. However, no data are available on the effects of sterilization methods on the properties of nanotube dispersions, the form in which most medical applications will be processed. Here we show the effects of gamma irradiation from a 60Co source on the dispersion and optical properties of single-wall carbon nanotubes in aqueous dispersion. Samples of different length-refined populations were sealed in ampoules and exposed to a dose of approximately 28 kGy, a level sufficient to ensure sterility of the dispersions. In contrast to literature results for solid-phase nanotube samples, the effects of gamma irradiation on the dispersion and optical properties of the nanotube samples were found to be minimal. Based on these results, gamma irradiation appears sufficiently non-destructive to be industrially useful for the sterilization of nanotube dispersions.

关键词： Nanotube single-wall nanotube (SWNT) single-wall carbon nanotube (SWCNT) gamma irradiation sterilization dispersion

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Acute retinal arterial ischemia

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Annals of Eye Science 2018年第1期3卷 187-199页

作者： Michael Dattilo nancy j.Newman Valérie Biousse Department of Ophthalmology 2Department of Neurology3Department of Neurologic SurgeryEmory University School of MedicineAtlantaGAUSA

Acute retinal arterial ischemia,which includes transient monocular vision loss(TMVL),branch retinal artery occlusion(BRAO),central retinal artery occlusion(CRAO)and ophthalmic artery occlusion(OAO),is most commonly the consequence of an embolic phenomenon from the ipsilateral carotid artery,heart or aortic arch,leading to partial or complete occlusion of the central retinal artery(CRA)or its *** retinal arterial ischemia is the ocular equivalent of acute cerebral ischemia and is an ophthalmic and medical *** with acute retinal arterial ischemia are at a high risk of having further vascular events,such as subsequent strokes and myocardial infarctions(MIs).Therefore,prompt diagnosis and urgent referral to appropriate specialists and centers is necessary for further work-up(such as brain magnetic resonance imaging with diffusion weighted imaging,vascular imaging,and cardiac monitoring and imaging)and potential treatment of an urgent etiology(e.g.,carotid dissection or critical carotid artery stenosis).Since there are no proven,effective treatments to improve visual outcome following permanent retinal arterial ischemia(central or branch retinal artery occlusion),treatment must focus on secondary prevention measures to decrease the likelihood of subsequent ischemic events.

关键词： Central retinal artery occlusion(CRAO) stroke ischemia management treatment thrombolysis

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Biodiversity change in heathland and its relationships with shifting local fire regimes and native species expansion

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journal of Plant Ecology 2015年第1期8卷 17-29页

作者： nancy Shackelford Michael Renton Michael P.Perring Kristine Brooks Richard j.Hobbs School of Plant Biology The University of Western Australia(M090)35 Stirling HighwayCrawleyWestern Australia 6009Australia Centre of Excellence for Climate Change Forest and Woodland HealthMurdoch UniversityMurdochWestern Australia 6150Australia Department of Environment and Conservation Great Southern District OfficePO Box 100NarroginWestern Australia 6312Australia

Aims Understanding the relationships among disturbance,invasion and species change is essential for effective management of many *** investigated relationships among fire history,invasion by a native tree species,Allocasuarina huegeliana,and diversity change to understand the potential drivers of plant community alteration in a complex and biodiverse *** We used plant species surveys from 1983 and 2011 to quantify spe-cies loss/gain and thence compositional ***,we surveyed population densities of the invasive species and collated long-term fire history data for each *** linear models and non-parametric models were used to assess the strength of relation-ships between the three variables of *** Findings Within the last 30 years,~11%of the plant species richness was lost from the *** an individual site level,we found only a 4%average decrease in overall plant species richness,but large species losses and gains that imply considerable compositional *** such shifts might be expected over 30 years,many of the gained species were common,potentially opportunistic species,while those lost were often locally rare woody *** addi-tion,gained species tended to be expanding their recorded range westward suggesting that they may be responding to the regional drying *** relationship between invasion density and spe-cies loss was strong over all spatial *** identified a poten-tial state change to dominance by the native invasive particularly as high densities prevented species gain at the site *** these extreme cases of high invasive density and high biodiversity loss,we argue that there may be a need to directly address the expanding native population.

关键词： kwongan sandplain heath Allocasuarina huegeliana native invasion woody encroachment

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Updates in endocrine therapy for metastatic breast cancer

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Cancer Biology & Medicine 2022年第2期19卷 202-212页

作者： Poorni M.Manohar nancy E.Davidson University of Washington/Seattle Cancer Care Alliance Seattle 98109WAUSA Fred Hutchinson Cancer Research Center Seattle 98109WAUSA

Endocrine therapy(ET)remains the mainstay of treatment for steroid hormone receptor-positive,human epidermal growth factor 2(HER2)-negative metastatic breast cancer(MBC).Tumor resistance to hormone therapy has led to the development of novel endocrine drug combinations,transforming the landscape of MBC *** options for ET are expanding,with promising agents in the *** MBC remains incurable,many patients can enjoy years of survival with good quality of life by cycling through the many available *** the plethora of available agents and rapid approvals,clinicians look to evidencebased guidelines to assist in treatment selection to maximize patient *** this review,we provide a contemporary review of the advances in ET and a suggested algorithm to guide clinicians in daily management of patients with hormone receptor-positive,HER2-negative *** will discuss landmark trials and highlight their impact in reshaping treatment ***,we will provide a glimpse into advances on the horizon and the promise they bring to improve outcomes in patients with advanced breast cancer.

关键词： Endocrine therapy metastatic breast cancer

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Fw-190 F-8

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模型世界 2020年第9期 16-25页

作者： Fernando del pino

福克-沃尔夫Fw-190系列中的F型和A型相比,外观上并没有什么太大的改变,该型号更像是由于此机拥有诸多改型从而导致逻辑性更名的产物。F-1型基于A-4,而F-2型则是基于A-5,以上两者都带有小型武器,而且机身下的挂弹量也增加了。此外,F-3型...

福克-沃尔夫Fw-190系列中的F型和A型相比,外观上并没有什么太大的改变,该型号更像是由于此机拥有诸多改型从而导致逻辑性更名的产物。F-1型基于A-4,而F-2型则是基于A-5,以上两者都带有小型武器,而且机身下的挂弹量也增加了。此外,F-3型其实就是改进了机翼结构的A-6。其中,最重要的就是源自A-8的F-8型,它增加了MG131机枪和标准型的副翼支架。和A-8型相同,该型号新增了许多装置,而且也被用来进行许多新型武器的测试之用。

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