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Seasonal exports of phosphorus from intensively fertilised nested grassland catchments

Journal of Environmental Sciences 2013年第9期25卷 1847-1857页

作者： Ciaran Lewis Rashad Rafique Nelius Foley Paul Leahy Gerard morgan John Albertson Sandeep Kumar Gerard Kiely Department of Civil and Environmental Engineering University College Cork Department of Microbiology and Plant Biology University of Oklahoma Environmental Research Institute University College Cork Aquatic Services Unit Environmental Research Institute University College Cork Department of Civil and Environmental Engineering Duke University Department of Plant Science South Dakota State University

we carried out a one year （2002） study of phosphorus （P） loss from soil to water in three nested grassland catchments with known P input in chemical fertilizer and animal liquid slurry applications. Chemical fertilizer was applied to the grasslands between March and September and animal slurry was applied over the twelve months. The annual chemical P fertilizer applications for the 17 and 211 ha catchments were 16.4 and 23.7 kg P/ha respectively and the annual slurry applications were 10.7 and 14.0 kg P/ha, respectively. The annual total phosphorus （TP） export in stream-flow was 2.61, 2.48 and 1.61 kg P/ha for the 17, 211 and 1524 ha catchments, respectively, compared with a maximum permissible （by regulation） annual export of ca. 0.35 kg P/ha. The export rate （ratio of P export to P in land applications） was 9.6% and 6.6% from the 17 and 211 ha catchments, respectively. On average, 70% of stream flow and 85% of the P export occurred during the five wet months （October to February） indicating that when precipitation is much greater than evaporation, the hydrological conditions are most favourable for P export. however the soil quality and land use history may vary the results. Particulate P made up 22%, 43% and 37% of the TP export at the 17, 211 and 1524 ha catchment areas, respectively. As the chemical fertilizer was spread during the grass growth months （March to September）, it has less immediate impact on stream water quality than the slurry applications. we also show that as the catchment scale increases, the P concentrations and P export decrease, confirming dilution due to increasing rural catchment size. In the longer term, the excess P from fertilizer maintains high soil P levels, an antecedent condition favourable to P loss from soil to water. This study confirms the significant negative water quality impact of excess P applications, particularly liquid animal slurry applications in wet winter months. The findings suggest that restricted P application in w

关键词： phosphorus fertilizer slurry exports grassland land management water quality eutrophication

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Case report of acute-on-chronic liver failure secondary to diffuse large B-cell lymphoma

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world Journal of Gastroenterology 2014年第44期20卷 16774-16778页

作者： Yahuza Siba Kenechukwu Obiokoye Richard Ferstenberg James Robilotti Joan Culpepper-morgan Department of Medicine Columbia University Medical Center Harlem Hospital Center Division of Gastroenterology Department of Medicine Columbia University Medical Center Harlem Hospital Center

Acute liver failure is a rare presentation of hematologic malignancy. Acute on chronic liver failure(ACLF) is a newly recognized clinical entity that describes acute hepatic decompensation in persons with preexisting liver disease. Diffuse large B-cell lymphoma(DLBCL) is an aggressive non-hodgkin's lymphoma(NhL) with increasing incidence in older males, females and blacks. however, it has not yet been reported, to present with acute liver failure in patients with preexisting chronic liver disease due to human immunodeficiency virus(hIV)/hepatitis C virus(hCV) co-infection. we describe a case of ACLF as the presenting manifestation of DLBCL in an elderly black man with hIV/hCV coinfection and prior hodgkin's disease in remission for three years. The rapidly fatal outcome of this disease is highlighted as is the distinction of ACLF from decompensated cirrhosis. Due to the increased prevalence of hIV/hCV co-infection in the African American 1945 to 1965 birth cohort and the fact that both are risk factors for chronic liver disease and NhL we postulate that the incidence of NhL presenting as ACLF may increase.

关键词： Diffuse large B-cell lymphoma Acute-on-chronic liver failure human immunodeficiency virus hepatitis C virus hodgkin's disease Fatal outcome

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Roadside dust contamination with toxic metals along industrial area in Islamabad, Pakistan

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Nuclear Science and Techniques 2014年第3期25卷 8-13页

作者： waheed Akram morgan Madhuku Kashif Shahzad Ali Awais Ishfaq Ahmad Muhammad Arif Ishaq Ahmad National Center for Physics IslamabadPakistan iThemba LABS Private Bag X11Wits 2050JohannesburgSouth Africa

An investigation has been carried out to understand the contamination characteristics of roadside dust in the industrial area of Islamabad, Pakistan. The amounts of Si, S, Cl, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Pb,Zn, Ga, As, Se and Cd were determined from 95 roadside dust samples collected along the Islamabad industrial area using Proton Induced X-ray Emission(PIXE). The results indicated that concentrations of all elements,except Cd, in the roadside dust were significant. The results of the enrichment factor show that the elementary composition of the roadside dust could be categorized as soil elements from the crust of the earth and elements from anthropogenic pollution. The high enrichment factors imply that elements such Cr, Cu, Pb, Zn, As, Se,Cd, Ni, Co and S came from anthropogenic activities. The source of metal contamination was identified using multivariate statistical analysis. It has been concluded that Ca, Sc, Ti, V, Mn and Fe mainly originate from crustal sources; Cr, Cu, Ni, Pb, Zn and Ga are associated with point-sources from industrial pollution/traffic;and S, Cl, K, As and Se are mainly related to oil/coal combustion.

关键词：伊斯兰堡灰尘污染巴基斯坦工业区有毒金属土壤元素多元统计分析 X射线发射

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hypertension and heart Failure as Predictors of Mortality in an Adult Congenital heart Defect Population

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Congenital heart Disease 2021年第4期16卷 333-355页

作者： Cheryl Raskind-hood Kashaine A.Gray Jayne morgan wendy M.Book Department of Epidemiology Emory School of Public HealthAtlantaGeorgiaUSA Department of Public health Mercer University College of Health ProfessionsAtlantaGeorgiaUSA Division of Cardiovascular Research Piedmont HospitalAtlantaGeorgiaUSA Division of Cardiology Emory University School of MedicineAtlantaGeorgiaUSA

Early intervention to prevent premature mortality is vital for adults with congenital heart defects(ChD).Anatomic complexity and comorbid conditions are thought to contribute to ChD *** hypertension(hTN)and heart failure(hF)are the comorbid conditions among the most prevalent causes of death in the United States,and commonly accompany ChD,it is crucial to evaluate whether they are reliable predictors of mortality for adults with ChD(AChD)independent of anatomic ChD complexity.A retrospective cross-sectional analysis of AChD,aged 18–64,with concomitant hTN and/or hF and at least one health care encounter during 2008–2010 were *** 5,397 AChD patients(18.3%hTN without hF,4.4%hF without hTN,8.3%with both),3.0%died(n=163)during the study ***,the sample was 45.1%white,61.4%female,and 29.0%had a complex *** those who died,23.3%had hTN without hF,17.2%had hF without hTN,and 42.3%had *** analyses revealed that older age,male gender,black race,and having public health insurance were associated with increased mortality during the three-year study period compared to AChD patients who were younger,female gender,white race,and covered by private health *** patients diagnosed with non-complex ChD lesions(i.e.,shunts,valves,or shunts+valves)were at greater risk of dying compared to those with severe complex *** ChD type was assessed separately,those with valve lesions were more likely to die compared to those with complex ChD *** adjustment for age,gender,race,insurance and ChD complexity,AChD patients with hF,with or without hTN,were equally likely to die during the study ***,AChD patients with hF,without or without hTN,who had valve defects were more likely to die during the three-year study period compared to patients with complex ChDs.

关键词： Congenital heart defect risk factors hypertension heart failure mortality

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Big Data Analytics in E-commerce for the *** China Through Literature Reviewing

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Journal of Systems Science and Information 2021年第1期9卷 16-44页

作者： weiqing ZhUANG morgan C.wANG Ichiro NA KAMOTO Ming JIANG School of Internet Economics and Business Fujian Universily of TechnologyFuzhou 350108China Research Center for“One Belt and Road"Economic and Policy Frujian University of TechnologyFiuzhou 350108China College of Science University of Central rloridaFlorida 32525USA School of Internet Econormics and Business Furjian Universily of TechnologyPuzhou 350108China School of Internet Econormics and Business Irujian University of TechnologyPuzhou 350108China

Big data analytics(BDA)in e-commerce,which is an emerging field that started in 2006,deeply affects the development of global e-commerce,especially its layout and performance in the *** *** paper seeks to examine the relative influence of theoretical research of BDA in e-commerce to explain the differences between the *** China by adopting a statistical analysis method on the basis of samples collected from two main literature databases,web of Science and CNKI,aimed at the *** *** results of this study help clarify doubts regarding the development of China's e-commerce,which exceeds that of the ***,in view of the theoretical comparison of BDA in e-commerce between them.

关键词： big data analytics e-commerce U.S.and China literature review

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Mechanism of progressive broad deformation from oceanic transform valley to off-transform faulting and rifting

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The Innovation 2022年第1期3卷 62-70页

作者： Fan Zhang Jian Lin Zhiyuan Zhou hongfeng Yang Jason P.morgan Key Laboratory of Ocean and Marginal Sea Geology South China Sea Institute of OceanologyInnovation Academy of South China Sea Ecology and Environmental EngineeringChinese Academy of SciencesGuangzhou 510301China Department of Ocean Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China Department of Geology and Geophysics Woods Hole Oceanographic InstitutionWoods HoleMA 02543USA Earth System Science Programme The Chinese University of Hong KongShatinHong Kong 999077China

Oceanic transform faults(TFs)are commonly viewed as single,narrow strikeslip seismic faults that offset two mid-ocean ridge ***,broad zones of complex deformation are ubiquitous at ***,we propose a new conceptual model for the progressive deformation within broad zones at oceanic TFs through detailed morphological,seismic,and stress *** argue that,under across-transform extension due to a change in plate motion,plate deformation occurs first along high-angle transtensional faults(TTFs)within the transform ***-transform normal faults(ONFs)form when across-transform deviatoric extensional stresses exceed the yield strength of the adjacent oceanic *** further extension,these normal faults can develop into off-transform rift zones(ORZs),some of which can further develop into transform plate *** illustrate that such progressive complex deformation is an inherent feature of oceanic *** new conceptual model provides a unifying theory to explain the observed broad deformation at global transform systems.

关键词： oceanic valley seismic

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Esophageal intramural pseudodiverticulosis,a rare cause of food impaction:case report and review of the literature

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Gastroenterology Report 2015年第2期3卷 175-178页

作者： Yahuza Siba Saritha Gorantla Anand Gupta Edward Lung Joan Culpepper-morgan Department of Medicine Columbia University Medical CenterHarlem Hospital CenterNew YorkNYUSA Division of Gastroenterology Department of MedicineColumbia University Medical CenterHarlem Hospital CenterNew YorkNYUSA

Esophageal intramural pseudodiverticulosis(EIPD)is a rare,benign condition of uncertain etiology and pathogenesis,which usually presents with either progressive or intermittent *** presentation with food impaction,requiring emergency esophago-gastroduodenoscopy(EGD),is *** report a case of EIPD presenting as food bolus impaction in an elderly black *** patient had no previous history of dysphagia or *** accepted risk factors,such as diabetes mellitus,chronic alcoholism,and reflux esophagitis,were not present in our *** EGD established the diagnosis and also dislodged the food *** evaluation of the mucosa diagnosed co-existent acute candidal *** treatment with proton pump inhibitor and azole antifungal led to resolution of her *** of the literature revealed that stenosis,strictures,perforation,gastro-intestinal bleed,and fistula formation are potential complications of *** motility abnormalities have been described but are not *** of the underlying inflammatory and or infectious condition is the mainstay of management of this unusual condition.

关键词： esophageal intramural pseudodiverticulosis food impaction dysphagia esophageal candidiasis

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Two-way communication: Volatile emission and uptake occur through the same barriers

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Molecular Plant 2023年第1期16卷 1-3页

作者： Joshua R.widhalm Meng-Ling Shih John A.morgan Natalia Dudareva Department of horticulture and Landscape Architecture Purdue UniversityWest LafayetteIN 47907USA Center for Plant Biology Purdue UniversityWest LafayetteIN 47907USA avidson School of Chemical Engineering Purdue UniversityWest LafayetteIN 47907USA Department of Biochemistry Purdue UniversityWest LafayetteIN 47907USA

Volatile organic compounds(VOCs)are released from aboveground organs into the atmosphere and/or from roots into the soil,allowing plants to communicate and interact with their environment,including with each ***-plant communication via VOCs includes intra-and inter-species signaling as well as within-plant *** some recipient tissues,for example,VOC perception encompasses storing the modified VOC for direct defense against herbivores(Sugimoto et al.,2014)or increasing tolerance to abiotic stresses(Zhao et al.,2020).In addition,or alternatively,perceived VOCs may initiate signaling cascades that prime plant defenses(Brosset and Blande,2022).In all cases,plant VOCs are first released into the environment before being taken up and perceived by the same or neighboring *** significant progress has been made over the last several years to elucidate how VOCs are released from plant cells,these studies have also revealed new questions about how communicated VOCs are imported across cellular *** reviews(Loreto and D’Auria,2022;wang and Erb,2022)and a special issue(Vlot and Rosenkranz,2022)have proposed mechanisms for VOC perception and *** this Opinion piece,we shed light on the gaps in knowledge about VOC import and offer perspectives for future research aiming at understanding the molecular mechanisms underlying VOC-mediated communication in plants.

关键词： communicate soil barriers

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Does Engaging in Acute Exercise Prior to Memory Encoding and During Memory Consolidation have an Additive Effect on Long-Term Memory Function?

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Journal of Science in Sport and Exercise 2020年第1期2卷 77-81页

作者： Paul D.Loprinzi morgan Chism Sarah Marable Exercise and Memory Laboratory Department of HealthExercise Science and Recreation ManagementThe University of Mississippi229 Turner Center UniversityUniversityMS 38677USA

Previous work has demonstrated that acute exercise prior to memory encoding may enhance long-term ***,other work demonstrates that acute exercise during the memory consolidation period may also enhance long-term memory ***,no study has evaluated whether long-term memory is enhanced when an acute bout of exercise occurs during both of these time periods,when compared to just prior to memory encoding.A within-subject randomized con-trolled intervention was *** separate laboratory visits,participants completed two main protocols,including(1)exercise before memory encoding and(2)exercise before and after memory ***-term memory was assessed,via a word-list task,from a 20-min delay period and a 24-h delay *** observed a significant main effect for time,F(8,176)=529.5,Phere was no difference in long-term memory function when comparing acute exercise only prior to memory encoding *** exercise both before and immediately after memory encoding.

关键词： Episodic memory Encoding Consolidation Physical activity

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Gene therapy and erectile dysfunction： the current status

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Asian Journal of Andrology 2007年第1期9卷 8-15页

作者： David h. w. Lau Sashi S. Kommu Emad J. Siddiqui Cecil S. Thompson Robert J. morgan Dimitri P. Mikhailidis Faiz h. Mumtaz Department of Urology Royal Free Hospital and University College Medical School University College London Royal Free Campus Rowland Hill Street London NW3 2QG UK Department of Clinical Biochemistry Royal Free Hospital and University College Medical School University College London Royal Free Campus Rowland Hill Street London NW3 2QG UK Department of Surgery Royal Free Hospital and University College Medical School University College London Royal Free Campus Rowland Hill Street London NW3 2QG UK Department of Urology Chase Farm Hospital The Ridgeway Enfield EN2 8JL UK Institute of Cancer Research and The Royal Marsden hospitals NhS Foundation Trust Surrey SM2 5PT UK

Current available treatment options for erectile dysfunction （ED） are effective but not without failure and/or side effects. Although the development of phosphodiesterase type 5 （PDE5） inhibitors （i.e. sildenafil, tadalafil and vardenafil） has revolutionized the treatment of ED, these oral medications require on-demand access and are not as effective in treating ED related to diabetic, post-prostatectomy and severe veno-occlusive disease states. Improvement in the treatment of ED is dependent on understanding the regulation of human corporal smooth muscle tone and on the identification of relevant molecular targets. Future ED therapies might consider the application of molecular technologies such as gene therapy. As a potential therapeutic tool, gene therapy might provide an effective and specific means for altering intracavernous pressure ＂on demand＂ without affecting resting penile function. however, the safety of gene therapy remains a major hurdle to overcome before being accepted as a mainstream treatment for ED. Gene therapy aims to cure the underlying conditions in ED, including fibrosis. Furthermore, gene therapy might help prolong the efficacy of the PDE5 inhibitors by improving penile nitric oxide bioactivity. It is feasible to apply gene therapy to the penis because of its location and accessibility, low penile circulatory flow in the flaccid state and the presence of endothelial lined （lacunar） spaces. This review provides a brief insight of the current role of gene therapy in the management of ED.

关键词： gene therapy nitric oxide synthase erectile dysfunction calcium-sensitive potassium channel vascular endothelial growth factor calcitonin gene-related peptide

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