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Homeomorphic extension of strongly spirallike mappings in C^n

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Science China Mathematics 2010年第1期53卷 87-100页

作者： CURT Paula KOHR gabriela KOHR Mirela Faculty of Economics and Business Administration Babes-Bolyai University 58-60 Teodor Mihali Str.400591 Cluj-NapocaRomania Faculty of Mathematics and Computer Science Babes-Bolyai University1 M.Kogaǎlniceanu Str.400084 Cluj-NapocaRomania

In this paper we consider a proper subclass nA of the full class of spirallike mappings on the Euclidean unit ball Bn in Cn with respect to a given linear operator A. We use the method of subordination chains to obtain an upper growth result for nA , and we obtain various examples of mappings in the same class of normalized biholomorphic mappings on the unit ball Bn in Cn . We also prove that the class nA is compact, while the full class of spirallike mappings with respect to a linear operator need not be compact in dimension n≥2, even when the operator is diagonal. This is one of the motivations for considering the class nA . Finally we prove that if f is a quasiregular strongly spirallike mapping on Bn such that ||[Df(z)]-1 Af(z)|| is uniformly bounded on Bn , then f extends to a homeomorphism of R2n onto itself. In addition, if A + A* = 2aI n for some a >0, this extension is also quasiconformal on R2n .

关键词： Biholomorphic mapping quasiregular mapping quasiconformal mapping spirallikeness strongly spirallikeness subordination subordination chain

Global Change Effects on Plant Chemical Defenses against Insect Herbivores

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Journal of Integrative Plant Biology 2008年第11期50卷 1339-1354页

作者： M.gabriela Bidart-Bouzat Adebobola Imeh-Nathaniel Department of Biological Sciences Bowling Green State University

This review focuses on individual effects of major global change factors, such as elevated CO2, O3, UV light and temperature, on plant secondary chemistry. These secondary metabolites are well-known for their role in plant defense against insect herbivory. Global change effects on secondary chemicals appear to be plant species-specifc and dependent on the chemical type. Even though plant chemical responses induced by these factors are highly variable, there seems to be some specificity in the response to different environmental stressors. For example, even though the production of phenolic compounds is enhanced by both elevated CO2 and UV light levels, the latter appears to primarily increase the concentrations of flavonoids. Likewise, specific phenolic metabolites seem to be induced by O3 but not by other factors, and an increase in volatile organic compounds has been particularly detected under elevated temperature. More information is needed regarding how global change factors influence inducibility of plant chemical defenses as well as how their indirect and direct effects impact insect performance and behavior, herbivory rates and pathogen attack. This knowledge is crucial to better understand how plants and their associated natural enemies will be affected in future changing environments.

关键词： elevated CO2 global climate change insect herbivory ozone plant chemical defenses plant-insect interactions plant secondary metabolites temperature tri-trophic interactions UV light.

Impact of tacrolimus intra-patient variability in adverse outcomes after organ transplantation

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World Journal of Transplantation 2023年第5期13卷 254-263页

作者： Maria Clara Morais Maria Eduarda Soares gabriela Costa Laura Guerra Nayana Vaz Liana Codes Paulo Lisboa Bittencourt School of Medicine Bahiana School of Medicine and Public HealthSalvador 40290-000BahiaBrazil School of Medicine Federal University of BahiaSalvador 40110-100BahiaBrazil Unit of Gastroenterology and Hepatology Portuguese HospitalSalvador 40130-030BahiaBrazil

Tacrolimus(Tac)is currently the most common calcineurin-inhibitor employed in solid organ *** intra-patient variability(IPV)of Tac(Tac IPV)has been associated with an increased risk of immune-mediated rejection and poor outcomes after kidney *** data are available concerning the impact of high Tac IPV in non-kidney ***,even in kidney transplantation,there is still a controversy whether high Tac IPV is indeed detrimental in respect to graft and/or patient *** may be due to different methods employed to evaluate IPV and distinct time frames adopted to assess graft and patient survival in those reports published up to now in the *** is also known about the influence of high Tac IPV in the development of other untoward adverse events,update of the current knowledge regarding the impact of Tac IPV in different outcomes following kidney,liver,heart,lung,and pancreas tran-splantation to better evaluate its use in clinical practice.

关键词： Tacrolimus Intra-patient variability Rejection Organ transplantation Graft survival Outcomes

Could the burden of pancreatic cancer originate in childhood?

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World Journal of Gastroenterology 2021年第32期27卷 5322-5340页

作者： Smaranda Diaconescu Georgiana Emmanuela Gîlcă-Blanariu Silvia Poamaneagra Otilia Marginean gabriela Paduraru gabriela Stefanescu Department of Pediatrics “Grigore T.Popa”University of Medicine and PharmacyIasi 700115Romania Department of Pediatric Gastroenterology St Mary Emergency Children's HospitalIasi 700309Romania Department of Gastroenterology and Hepatology "Grigore T.Popa"University of Medicine and PharmacyIasi 700115Romania Department of Gastroenterology and Hepatology “St.Spiridon”Emergency HospitalIasi 700111Romania Doctoral School George Emil Palade University of MedicinePharmacyScience and TechnologyTargu Mures 540142Romania Department of Pediatrics Research Center of Disturbance of Growth and Development on Children-BeliveUniversity of Medicine and Pharmacy“Victor Babes”TimisoaraTimisoara 300041Romania First Clinic of Pediatrics "Louis Turcanu"Emergency Childen's HospitalTimisoara 300011Romania

The presence of pancreatic cancer during childhood is extremely rare,and physicians may be tempted to overlook this diagnosis based on age ***,there are primary malignant pancreatic tumors encountered in pediatric patients,such as pancreatoblastoma,and tumors considered benign in general but may present a malignant potential,such as the solid pseudo-papillary tumor,insulinoma,gastrinoma,and vasoactive intestinal peptide secreting *** early diagnosis and management are of paramount importance since the survival rates tend to differ for various types of these *** pediatric cancers may present pancreatic metastases,such as renal cell carcinoma,which may evolve with pancreatic metastatic disease even after two or more *** childhood diseases may create a predisposition for the development of pancreatic cancer during adulthood;hence,there is a need for extensive screening strategies and complex programs to facilitate the transition from pediatric to adult ***,genetic studies highlight the fact the specific gene mutations and family aggregations may be correlated with a special predisposition towards pancreatic *** review aims to report the main pancreatic cancers diagnosed during childhood,the most important childhood diseases predisposing to the development of pancreatic malignancies,and the gene mutations associates with pancreatic malignant tumors.

关键词： Pancreatic cancer Pancreatic metastasis Childhood Adult Screening Transition

Hepatocellular carcinoma in patients with metabolic dysfunctionassociated fatty liver disease: Can we stratify at-risk populations?

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World Journal of Hepatology 2022年第2期14卷 354-371页

作者： Eduardo Fassio Fernando J Barreyro M Soledad Pérez Diana Dávila Graciela Landeira Gisela Gualano gabriela Ruffillo Hepatology Section Gastroenterology ServiceHospital Nacional Prof.Alejandro PosadasEl Palomar 1684Buenos AiresArgentina Biotechnology Institute of Misiones Faculty of Chemical and Natural SciencesNational University of MisionesPosadas N3300MisionesArgentina

Metabolic dysfunction-associated fatty liver disease(MAFLD)is a new nomenclature recently proposed by a panel of international experts so that the entity is defined based on positive criteria and linked to pathogenesis,replacing the traditional non-alcoholic fatty liver disease(NAFLD),a definition based on exclusion ***/MAFLD is currently the most common form of chronic liver disease worldwide and is a growing risk factor for development of hepatocellular carcinoma(HCC).It is estimated than 25%of the global population have NAFLD and is projected to increase in the next *** Scientific Societies agree that surveillance for HCC should be indicated in patients with NAFLD/MAFLD and cirrhosis but differ in non-cirrhotic patients(including those with advanced fibrosis).Several studies have shown that the annual incidence rate of HCC in NAFLD-cirrhosis is greater than 1%,thus surveillance for HCC is *** factors that increase HCC incidence in these patients are male gender,older age,presence of diabetes and any degree of alcohol *** non-cirrhotic patients,the incidence of HCC is much lower and variable,being a great challenge to stratify the risk of HCC in this ***,large epidemiological studies based on the general population have shown that diabetes and obesity significantly increase risk of *** genetic variants may also play a role modifying the HCC occurrence among patients with *** purpose of this review is to discuss the epidemiology,clinical and genetic risk factors that may influence the risk of HCC in NAFLD/MAFLD patients and propose screening strategy to translate into better patient care.

关键词： Hepatocellular carcinoma Metabolic dysfunction-associated fatty liver disease Nonalcoholic fatty liver disease Surveillance for hepatocellular carcinoma Incidence of hepatocellular carcinoma Nonalcoholic steatohepatitis

New statistical results on the optical IDV data of BL Lac S5 0716+714

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Research in Astronomy and Astrophysics 2015年第3期15卷 327-332页

作者： Bogdan Dǎnilǎ Alexandru Marcu gabriela Raluca Mocanu Faculty of Physics Babes-Bolyai University Romanian Academy Astronomical Institute Astronomical Observatory Cluj-Napoca

This paper reports on the statistical behavior of the optical Intraday Variability of BL Lac S5 0716＋714. Available Intraday Variability data in the opti- cal are tested to see whether or not the magnitude is lognormally distributed. Our results consistently indicate that this is not the case. This is in agreement with a previ- ous discussion about data for the same object but in a different observational period. Simultaneously, the spectral slope of the light curves is calculated. The implications of these findings on models that describe both the location and source of Intraday Variability are presented.

关键词： radiation mechanisms non-thermal -- BL Lacertae objects individual:S5 0716+714

Detection and determination of undeclared synthetic caffeine in weight loss formulations using HPLC-DAD and UHPLC-MS/MS

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Journal of Pharmaceutical Analysis 2018年第6期8卷 366-372页

作者： Carine Viana gabriela M.Zemolin Thaís R.Dal Molin Luciana Gobo Sandra Maria Ribeiro gabriela C.Leal gabriela Z.Marcon Leandro M.de Carvalho Graduate Program in Pharmaceutical Sciences Federal University of Santa Maria (UFSM) Center of Health Sciences Federal University of Santa Maria (UFSM) Department of Chemistry Federal University of Santa Maria (UFSM)

Caffeine is present in products marketed for weight loss, with the purpose of increasing thermogenesis and lipid metabolism. The dosage declared by the product manufacturer, or even its presence, is not always correctly described on the label. This work aimed to investigate the undeclared synthetic caffeine in weight loss formulations by a high-performance liquid chromatography with diode array detection(HPLC-DAD) method. From one hundred products purchased through Brazilian e-commerce, seventeen contained caffeine, either naturally or synthetically added to formulation. The caffeine-containing samples were confirmed by an ultra-high performance liquid chromatography-tandem mass spectrometry(UHPLC-MS/MS) method, and adulteration was clearly proven in five products. The content highest caffeine contained 448.8 mg per dose. Other irregularities were also found; nevertheless, the most serious was the addition of synthetic drugs without asking the consumers. Additional drugs expose the consumer to more possible side-effects as well as deleterious drug interactions. Intentional adulteration with any unlabeled substance is typically motivated by a desire to increase or alter the claimed effect of the marketed product to gain a commercial advantage.

关键词： Undeclared synthetic caffeine Weight loss formulations HPLC-DAD UHPLC-MS/MS

One step synthesis of high efficiency nickel/mesoporous TiO_2 hybrid catalyst for hydrogen evolution reaction

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Journal of Energy Chemistry 2019年第2期28卷 79-87页

作者： Esteban A.Franceschini Melisa J.Gomez gabriela I.Lacconi INFIQC-CONICET Dto.de Fisicoquímica – Facultad de Ciencias QuímicasUniversidad Nacional de CórdobaCiudad Universitaria Departamento de Física de la Materia Condensada Centro Atómico ConstituyentesComisión Nacional de Energía Atómica

Nickel-Ti O_2 hybrid catalysts are synthesized by electrodeposition and their catalytic activity with respect to the hydrogen evolution reaction is *** types of titanium oxide particles,which are commercial particles of dense Ti O_2 and mesoporous TiO_2 particles synthesized by an aerosol method,are incorporated into the matrix of the nickel *** nickel catalysts containing Ti O_2 particles presented higher catalytic activity than the conventional nickel Watts *** TiO_2-modified nickel catalyst showed the highest catalytic activity towards HER in alkaline *** addition,this type of nickel catalyst increases its catalytic activity after ageing treatment,which is an indication of an increase in the electro-active area of the electrode.

关键词： Co-deposition Impedance spectroscopy Titanium oxide Ageing process Raman spectroscopy

Cyclic heptapeptides with metal binding properties isolated from the fungus Cadophora malorum from Antarctic soil

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Natural Products and Bioprospecting 2022年第1期12卷 393-402页

作者： Guidmar C.Donalle María Martha Martorell Gastón E.Siless Lucas Ruberto gabriela M.Cabrera Facultad de Ciencias Exactas y Naturales Departamento de Química OrgánicaUniversidad de Buenos AiresBuenos AiresArgentina Unidad de Microanálisis y Métodos Físicos Aplicados a la Química Orgánica(UMYMFOR) CONICET-Universidad de Buenos AiresBuenos AiresArgentina Instituto Antártico Argentino Instituto NanobiotecCONICET-Universidad de Buenos AiresBuenos AiresArgentina

The Antarctic fungus Cadophora malorum produces previously undescribed cyclic heptapeptides(cadophorin A and B)containing an anthranilic acid *** planar structure of these peptides was determined by high-resolution mass spectrometry combined with extensive 1D and 2D NMR *** absolute configuration of the amino acids was determined by Marfey’s method,with HPLC analysis of FDVA(Nα-(2,4-dinitro-5-fluorphenyl)-l-valinamide)derivatives making use of a PFP ***,cadophorin 2 possesses both the uncommon d-Ile and d-allo-Ile in its *** peptides have metal binding properties as shown by LCMS with post column addition of metal salt *** results were supported by DFT calculations.

关键词： Cyclic peptide Cadophora malorum Metal binding