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Sudden openings and gradual closures in canopy cover modulate acclimation,survival,and growth of a shade-tolerant rainforest tree species

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Journal of Forestry Research 2024年第5期35卷 78-90页

作者： Ana Paula Moretti Flavia Yesica olguin Juan Marcelo Gauna corina Graciano INFIVE(CoNICET-Universidad Nacional de La Plata) Diagonal 113 N°4951900 La PlataProvincia de Buenos AiresArgentina CoNICET Godoy Cruz 2290C1425FQB Buenos AiresArgentina Facultad de Ciencias Agrariasy Forestales Universidad Nacional de La PlataCalle 60y 1181900 La PlataProvincia de Buenos AiresArgentina Facultad de Ciencias Forestales Universidad Nacional de MisionesBertoni 124 km 33380 EldoradoProvincia de MisionesArgentina

Forest disturbances at gap levels are one of the most important events for the regeneration and establishment of intermediate tree *** canopy openings expose plants to high light intensity and high evaporative demands that stress shade-acclimated ***,the slow closure of gaps reduces light availability to plants established when the incident irradiation was *** work evaluated the morphological and physiological acclimation of Cabralea canjerana(Vell)*** to sudden and to gradual changes in canopy cover.A pot experiment was carried out with plants exposed to a sudden opening.A few days after the light shock,plants rapidly increased photosynthetic rates and decreased leaf water *** two months,plants activated physiological responses at leaf and whole plant levels to high light and water stresses,e.g.,increased stoma-tal conductance,stomatal index and reduction of leaf:fine roots ratio and *** seven months,hydraulic conductivity of petioles and the whole leaf increased,and growth was much higher than plants that remained under the *** a field experiment in gaps in the rainforest,plants acclimated to all canopy *** years after planting,growth was maximum in open environments within the gaps,even if the canopy closed during the first 20 months after *** conclusion,if this species is planted to enrich the rainforest,positions within gaps with lower canopy cover should be chosen and gap closure will not affect *** manage *** natural regeneration,the opening of gaps and removal of understory will increase survival and growth without the risk that the stress caused by these sudden openings could lead to the death of ***-bining pot and field experiments helps to understand the autecology of trees with particular ecological interest,and to build sound restoration practices.

关键词： Cabralea canjerana Atlantic forest Abiotic stress Regeneration Seedling

Prospective study of hepatitis B and D epidemiology and risk factors in Romania:A 10-year update

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World Journal of Hepatology 2024年第4期16卷 640-649页

作者： Speranta Iacob Liana Gheorghe Mirela onica Laura Huiban corina Silvia Pop Ciprian Brisc Roxana Sirli Carmen Ester Cristina Mihaela Brisc Sorina Diaconu Ion Rogoveanu Larisa Sandulescu Deiana Vuletici Anca Trifan Department of Gastroenterology Carol Davila University of Medicine and PharmacyBucharest 050474Romania Department of Gastroenterology and Hepatology Fundeni Clinical InstituteBucharest 022328Romania Department of Gastroenterology Grigore T Popa University of Medicine and PharmacyIasi 700115Romania Institute of Gastroenterology and Hepatology Saint Spiridon County HospitalIasi 700111Romania Department of Gastroenterology and Medical oncology University Emergency Clinical HospitalBucharest 050098Romania Faculty of Medicine and Pharmacy University of OradeaOradea 410087Romania Department of Gastroenterology Emergency County HospitalOradea 410169Romania Center for Advanced Research in Gastroenterology and Hepatology Department of Gastroenterology and Hepatology“Victor Babeş”University of Medicine and PharmacyTimisoara 300041Romania Department of Gastroenterology and Hepatology TimişCounty Emergency Clinical Hospital"Pius Branzeu"Timisoara 300723Romania Department of Internal Medicine II and Gastroenterology University Emergency Clinical HospitalBucharest 050098Romania Department of Gastroenterology University of Medicine and PharmacyCraiova 200349Romania Department of Cardiology Emergency County HospitalCraiova 200642Romania Department of Gastroenterology Research Center of Gastroenterology and HepatologyUniversity of Medicine and PharmacyCraiova 200349Romania Department of Gastroenterology Emergency County HospitalCraiova 200642Romania Department of Gastroenterology Faculty of MedicineGrigore T Popa University of Medicine and PharmacyIasi 700115Romania

BACKGRoUND The global burden of hepatitis D virus(HDV)infection represents a major medical challenge and a public health crisis ***,there is a lack of accurate data on the epidemiology and risk factors for *** B virus(HBV)and HDV coinfection causes the most severe form of viral hepatitis,leading to a higher cumulative incidence of liver-related events compared with HBV monoinfection,including the need for liver transplantation and *** To investigate the epidemiology,natural history,risk factors and clinical management of HBV and HDV coinfection in Romanian *** This prospective study was conducted between January and July 2022 in six tertiary gastroenterology and hepatology referral centres in *** consecutive adults admitted for any gastroenterology diagnosis who were HBV-positive were *** with acute hepatitis or incomplete data were *** the 25390 individuals who presented with any type of gastroenterology diagnosis during the study period,963 met the inclusion *** for anti-HDV antibodies and HDV RNA was performed for all *** and risk factor data were collected by investigators using medical charts and patient *** data were stored in an anonymized online database during the *** The prevalence of HBV was 3.8%;among these patients,the prevalence of HBV/HDV coinfection was 33.1%.The median age of the study population was 54.0 years,and it consisted of 55.1%men.A higher prevalence of HBV/HDV coinfection was observed in patients 50–69 years *** with HBV/HDV coinfection were significantly older than those with HBV monoinfection(P=0.03).Multivariate multiple regression analysis identified female gender(P=0.0006),imprisonment(Polder age at diagnosis(P=0.01)and sexual contact with persons with known viral hepatitis(P=0.0003)as significant risk factors for *** This study shows that HDV infection among those with HBV re

关键词： Epidemiology Hepatitis B Hepatitis D Natural history Risk factors Romania

Ableism and (Neo)Racism in School Placement Processes in Quebec: School Personnel Interpretations of Immigrant Student Difficulties - A Secondary Publication

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Journal of Contemporary Educational Research 2024年第3期8卷 148-160页

作者： Tya Collins corina Borri-Anadon University of Montreal Canada University of Quebec at Trois-Rivières Canada

The school placement processes of students from immigrant backgrounds considered to be in“difficulty”is an international concern at the intersection of works relating to special education and those concerning the school experiences of students from immigrant backgrounds or racialized *** research problem of this article concerns the identification of these students as disabled or as having adjustment or learning *** a perspective anchored in Disability Critical Race Studies,this ethnographic study documents different interpretations of perceived difficulties made by school actors with regard to seven primary school students from immigrant *** interpretation types are presented:(1)medicalization by dismissal of cultural markers,(2)medicalization by professional constraint,(3)medicalization by cultural deficit,(4)precautionary wait,and(5)cultural *** results help to shed light on the special education overrepresentation phenomenon regarding these students and to understand how ableism and(neo)racism contribute to it.

关键词： Categorization in education Learning difficulties and students in difficulty Immigration and ethnicity Educational inclusion and exclusion Canada

Unsteady flow of viscoelastic fluid between two cylinders using fractional Maxwell model

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Acta Mechanica Sinica 2012年第2期28卷 274-280页

作者： Muhammad Jamil Constantin Fetecau corina Fetecau Abdus Salam School of Mathematical Sciences GC UniversityLahorePakistan Department of Mathematics NED University of Engineering&TechnologyKarachi-75270Pakistan Department of Mathematics Technical University of IasiIasi-700050Romania Department of Theoretical Mechanics Technical University of IasiIasi-700050Romania

The unsteady flow of an incompressible fractional Maxwell fluid between two infinite coaxial cylinders is studied by means of integral transforms. The motion of the fluid is due to the inner cylinder that applies a time dependent tor- sional shear to the fluid. The exact solutions for velocity and shear stress are presented in series form in terms of some generalized functions. They can easily be particularized to give similar solutions for Maxwell and Newtonian fluids. Fi- nally, the influence of pertinent parameters on the fluid motion, as well as a comparison between models, is highlighted by graphical illustrations.

关键词： Maxwell fluid Fractional derivative Exact so- lutions Velocity field Shear stress Laplace and Hankel transforms

Nutritional status and nutritional therapy in inflammatory bowel diseases

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World Journal of Gastroenterology 2009年第21期15卷 2570-2578页

作者： corina Hartman Rami Eliakim Raanan Shamir Institute of Gastroenterology Nutritionand Liver DiseaseSchneider Children's Medical Center of Israel Institute of Gastroenterology Rambam Health Care CampusRappaport School of MedicineTechnion Institute

Underweight and specific nutrient deficiencies are frequent in adult patients with inflammatory bowel disease(IBD).In addition,a significant number of children with IBD,especially Crohn's disease(CD) have impaired linear *** has an important role in the management of *** adults with CD,enteral nutrition(EN) is effective in inducing clinical remission of IBD,although it is less efficient than *** EN is an established primary therapy for pediatric *** data suggests that EN is as efficient as corticosteroids for induction of *** advantages of nutritional therapy are control of inflammation,mucosal healing,positive benefits to growth and overall nutritional status with minimal adverse *** available evidence suggests that supplementary EN may be effective also for maintenance of remission in *** studies are needed to confirm these ***,EN supplementation could be considered as an alternative or as an adjunct to maintenance drug therapy in *** does not have a primary therapeutic role in ulcerative *** compositions of enteral dietselemental diets or diets containing specific components-were not shown to have any advantage over standard polymeric diets and their place in the treatment of CD or UC need further *** theories suggest that diet may be implicated in the etiology of IBD,however there are no proven dietary approaches to reduce the risk of developing IBD.

关键词： Inflammatory bowel disease Crohn'sdisease Ulcerative colitis Adults Children Malnutrition Growth disorders Nutrition therapy

The Commitment to Promoting a Culture of Equity in Quebec Secondary Schools: Insights from School Stakeholders - A Secondary Publication

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Journal of Contemporary Educational Research 2024年第3期8卷 161-172页

作者： corina Borri-Anadon Geneviève Audet Eve Lemaire University of Quebec at Trois-Rivières Canada University of Quebec in Montreal Canada

This paper presents the results of a research project on the intercultural climate in schools and the academic success of immigrant students in *** intercultural climate in eight secondary public schools is documented from the standpoint of various school and community stakeholders,students,and *** specifically,the paper focuses on the commitment to promoting cultural equity,which is identified through interviews with the targeted stakeholders on exclusionary practices and processes and the practices implemented to counter *** results identify five areas of vulnerability among certain minoritized groups of students:the transition from welcoming to regular classes for those students learning French,evaluation and support for those experiencing learning or behavioral difficulties,the referral of these students to adult education programs or work-oriented training programs,their participation in extracurricular activities,and their access to special school ***,some schools do report the introduction of many equity practices in response to the exclusionary ***,these initiatives are mostly occasional and voluntary and pertain to interactions between *** findings call for a discussion on the importance of systemic and concerted initiatives towards achieving equity.

关键词： Educational inclusion and exclusion Educational inequalities Immigration and ethnicity Canada

A note on the unsteady flow of a fractional Maxwell fluid through a circular cylinder

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Acta Mechanica Sinica 2012年第2期28卷 308-314页

作者： M.Athar A.U.Awan corina Fetecau Abdus Salam School of Mathematical Sciences GC University Lahore68-BNew Muslim Town LahorePakistan

In this note the velocity field and the adequate shear stress corresponding to the unsteady flow of a frac- tional Maxwell fluid due to a constantly accelerating circular cylinder have been determined by means of the Laplace and finite Hankel transforms. The obtained solutions satisfy all imposed initial and boundary conditions. They can easily be reduced to give similar solutions for ordinary Maxwell and Newtonian fluids. Finally, the influence of pertinent param- eters on the fluid motion, as well as a comparison between models, is underlined by graphical illustrations.

关键词： Fractional Maxwell fluid Velocity field Shear stress Exact solutions

Promising psyllium-based composite containing Tio2 nanoparticles as aspirin-carrier matrix

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Progress in Natural Science:Materials International 2014年第3期24卷 205-209页

作者： Marcela-corina Rosu Ioan Bratu National Institute for Research and Development of Isotopic and Molecular Technologies

Composite nanomaterials represent a new trend in the biomedical field. Coupling inorganic/organic constituents with non-toxicity/biocompatibility properties leads to develop the new systems having special characteristics that can be used in various bio-applications. This paper describes the preparation and characterization of psyllium-based composites containing Tio2 nanoparticles in order to develop new therapeutic strategies for aspirin drug delivery. The structural characteristics of obtained materials were investigated by FTIR spectroscopy. The UV–vis spectrophotometric analysis was performed to evaluate the aspirin release behavior under different pH conditions at 37 1C. Combining psyllium(as an excellent source of fiber) with Tio2 inorganic unit(as vehicle of aspirin) it was found that polymeric-Tio2networks have promising potential for controlled aspirin release as therapeutic agent.

关键词： Psyllium Titanium dioxide Aspirin In vitro release

High resolution, binder-free investigation of the intrinsic activity of immobilized NiFe LDH nanoparticles on etched carbon nanoelectrodes

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Nano Research 2018年第11期11卷 6034-6044页

作者： Patrick Wilde Stefan Barwe corina Andronescu Wolfgang Schuhmann Edgar Ventosa Analytical Chemistry - Center for Electroche.mical Sciences (CES) Ruhr-Universitat Bochum Universitasstr. 150 D-44780 Bochum Germany IMDEA Energy Avda. Ramo de la Sagra 3 28935 Motoles Spain

The determination of the intrinsic properties of nanomaterials is essential for their optimization as electrocatalysts, however it poses great challenges from the standpoint of analytical tools and methods. Herein, we report a novel methodology that allows for a binder-free investigation of electrocatalyst nanoparticles. The potential-assisted immobilization of a non-noble metal catalyst, i.e., nickel-iron layered double hydroxide (NiFe LDH) nanoparticles, was employed to directly attach small nanoparticle ensembles from a suspension to the surface of etched carbon nanoelectrodes. The dimensions of this type of electrodes allowed for the immobilization of the catalyst material below the picogram scale and resulted in a high resolution towards the faradaic current response. In addition the effect of the electrochemical aging on the intrinsic activity of the catalyst was investigated in alkaline media by means of continuous cyclic voltammetry. A change in the material properties could be observed, which was accompanied by a substantial decrease in its intrinsic activity.

关键词： oxygen evolution reaction nickel-iron layered double hydroxide (NiFe LDH) immobilization nanoelectrocatalysis nanoelectrodes nanoimpacts