bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effects of dredging on the vegetation in a small lowland river
Authors: Stępień Edyta , Zawal Andrzej , Buczyński Paweł , Buczyńska Edyta , Szenejko Magdalena 
Published: January 2019

BackgroundConventional river engineering operations have a substantial influence on the fluvial ecosystem. Regulation and channelization generally reduce the physical heterogeneity of river beds and banks and the heterogeneity of habitats. They determine the character, diversity and species richness of plant communities. The effect of river regulation on vegetation has been repeatedly investigated, but few studies have been conducted within reaches of previously regulated rivers. The aim of this work is to expand and current knowledge about the impact of dredging on the vegetation of a regulated section of a lowland river.Materials & MethodsThe study included pre-dredging (1 year before) and post-dredging surveys (results 1 and 2 years after dredging). The vegetation was analysed in terms of species composition, origin of species, life forms, distribution of Grime’s life strategies, and selected ecological factors. The Shannon–Wiener biodiversity index (H) and evenness were also analysed in each year of the study. The impact of dredging on the vascular flora was assessed by ‘before-after-control-impact’ (BACI) analysis.ResultsThe number of species and biodiversity as measured by the Shannon–Wiener index (H) increased in the analysed section of the river valley. However, enrichment of the flora was observed only on the floodplain, on the surface of the deposited dredging material, while the number of species in the river channel decreased, as dredging of the river bed and levelling of the banks had markedly reduced habitat diversity. Although species richness in the second year after the dredging approached the values recorded before the intervention, the absence of particularly species or phytocenoses associated with shallow river banks and sandbars was still observed. The change in habitat conditions and the destruction of the vegetation cover during the dredging enabled penetration by numerous previously unrecorded alien species of plants and apophytes. There was a perceptible increase in the role of therophytes in the flora. It is worth noting that the number of alien species and therophytes declined significantly in the second year after the dredging. Analysis of the proportions of species representing various life strategies showed that previously unrecorded species with the type R (ruderal) life strategy had appeared, representing by pioneer species occurring in frequently disturbed habitats. There was also a marked increase in the share of species representing the mixed C-R (competitive-ruderal) strategy, occurring in habitats with low levels of stress, whose competitive abilities are limited by repeated disturbances. By the second year after the dredging, however, these changes were largely no longer observed.ConclusionsThrough appropriate maintenance of the regulated river, it can be rapidly recolonized by vegetation after the procedure, but it may lead to the loss of some species and phytocoenoses.
The Patient Safety Culture of a Nursing Team From a Central Ambulatory / A Cultura de Segurança do Paciente da Equipe de Enfermagem de um Ambulatório Centra
Authors: Picolotto Aline , Barella Daniela , Moraes Fernando Roberto , De Gasperi Patrícia 
Published: January 2019

Objetivo: identificar a cultura de segurança do paciente dos profissionais da equipe de enfermagem de um Ambulatório Central. Métodos: estudo de abordagem quantitativa do tipo Survey transversal. A coleta dos dados foi realizada no primeiro semestre de 2015, com auxílio do questionário Safety Attitudes Questionnaire. A amostra foi composta por três enfermeiros e cinco técnicos de enfermagem. Resultados: nenhuma das dimensões alcançou a média mínima (75 pontos) para uma cultura de segurança do paciente adequada. Conclusão: percebe-se a necessidade de uma mudança cultural, sendo necessária uma atuação conjunta entre a equipe e gestores para alcançar índices adequados. A cultura de segurança do paciente deve ser constantemente avaliada. Sugere-se a aplicação do SAQ em todas as equipes deste ambulatório, uma vez que o cuidado multidisciplinar proporciona uma assistência de qualidade à comunidade assistida. Descritores: Segurança do paciente; Enfermagem; Instituições de assistência ambulatorial.
Communication in Palliative Care: a Bibliometric Study / Cuidados Paliativos e Comunicação: Estudo Bibliométrico
Authors: Alves Adriana Marques Pereira de Melo , Costa Solange Fátima Geraldo da , Fernandes Maria Andréa , Batista Patrícia Serpa de Souza , Lopes Maria Emília Limeira , Zaccara Ana Aline Lacet 
Published: January 2019

Objetivo: Analisar os indicadores bibliométricos acerca da produção cientifica sobre cuidados paliativos e comunicação disseminados em periódicos online no campo da saúde. Método: - Estudo bibliométrico cuja amostra foi composta por 67 artigos, publicados no período de 2007-2016 nas bases de dados Lilacs, MedLine e Scielo. Resultados: A análise dos indicadores mostrou que houve crescimento expressivo das publicações sobre cuidados paliativos e comunicação, nos últimos dez anos, mesmo de forma não progressiva. O ano de 2016 se destacou como o de maior produção de estudos (22%). Verificou-se a internacionalização dos estudos sobre a temática, tendo em vista que a maioria foi publicada em periódicos internacionais (80,6%), na língua inglesa (76,2%). Conclusão: Existe a necessidade do desenvolvimento de pesquisas com maior nível de evidência na área dos cuidados paliativos e da comunicação, para que possam ser aplicados na assistência ao paciente.
The Consequences of Violence During Pregnancy for Both Fetus and Newborn: Systematic Review / Implicações para o Feto e Recém-Nascido da Violência Durante a Gestação: Revisão Sistemática
Authors: Costa Leite Franciele Marabotti , Gabira Fernanda Garcia , Freitas Priscila Alves , Lima Eliane de Fátima Almeida , Bravim Larrisa Regina , Primo Candida Caniçali 
Published: January 2019

Objetivo: Identificar estudos sobre os efeitos para o feto e recém-nascido da violência contra a mulher durante a gestação. Métodos: Revisão realizada nas bases MEDLINE e LILACS. Foram incluídos estudos epidemiológicos analíticos, publicados em inglês, espanhol e português. Resultados: Foram incluídos 27 estudos. Os dados apontam na direção de que a violência na gravidez é risco para a ocorrência de restrição no crescimento intrauterino, nascer pequeno para idade gestacional e maiores níveis plasmáticos de Glutamato, GABA e cortisol. Foi consenso entre os estudos o risco de óbito fetal e neonatal entre as mulheres que vivenciaram o fenômeno da violência no período gestacional. Conclusão: A violência durante a gestação constitui um agravo relevante na saúde pública. Os achados destacam a importância da realização e inicio precoce do pré-natal, pois constitui um espaço importante no rastreamento das violências.
Asymptotically convergent switching differentiator
Authors: Park Jang‐Hyun , Kim Seong‐Hwan , Park Tae‐Sik 
Published: January 2019

SummaryA novel switching differentiator with a considerably simplified form is proposed. Under the assumption that the time‐derivative of a time‐varying signal has a Lipschitz constant, it is shown that estimation error is asymptotically convergent to zero. The estimated derivative shows neither chattering nor peaking phenomenon. A differentiator that estimates the first‐order derivative of a signal is first proposed, and, by connecting this differentiator in series, higher‐order derivatives also become available. Simulation results show that the proposed differentiator shows extreme performance improvements compared to the previously established widely used differentiators such as high‐gain observer or higher‐order sliding mode differentiator.
Asymmetric Synthesis of Spirooxindole β‐lactams via Isothiourea‐catalyzed Mannich/lactamization Reaction of Aryl Acetic Acids with Isatin‐derived Ketimines
Authors: Jin Jing‐Hai , Zhao Jianhong , Yang Wu‐Lin , Deng Wei‐Ping 
Published: January 2019

AbstractAn efficient [2+2] annulation strategy that isothiourea catalyst homobenzotetramisole (HBTM)‐catalyzed Mannich/lactamization cascade reaction of carboxylic acids with isatin‐derived ketimines has been disclosed. This protocol affords a range of structurally diverse spirooxindole β‐lactams bearing two vicinal stereogenic centers in good to high yields with good to excellent stereoselectivities.magnified image
Neural function in DCC mutation carriers with and without mirror movements
Authors: Vosberg Daniel E. , Beaulé Vincent , Torres‐Berrío Angélica , Cooke Danielle , Chalupa Amanda , Jaworska Natalia , Cox Sylvia M. L. , Larcher Kevin , Zhang Yu , Allard Dominique , Durand France , Dagher Alain , Benkelfat Chawki , Srour Myriam , Tampieri Donatella , La Piana Roberta , Joober Ridha , Lepore Franco , Rouleau Guy , Pascual‐Leone Alvaro , Fox Michael D. , Flores Cecilia , Leyton Marco , Théoret Hugo 
Published: January 2019

ObjectiveRecently identified mutations of the axon guidance molecule receptor gene, DCC, present an opportunity to investigate, in living human brain, mechanisms affecting neural connectivity and the basis of mirror movements, involuntary contralateral responses that mirror voluntary unilateral actions. We hypothesized that haploinsufficient DCC+/− mutation carriers with mirror movements would exhibit decreased DCC mRNA expression, a functional ipsilateral corticospinal tract, greater “mirroring” motor representations, and reduced interhemispheric inhibition. DCC+/− mutation carriers without mirror movements might exhibit some of these features.MethodsThe participants (n = 52) included 13 DCC+/− mutation carriers with mirror movements, 7 DCC+/− mutation carriers without mirror movements, 13 relatives without the mutation or mirror movements, and 19 unrelated healthy volunteers. The multimodal approach comprised quantitative real time polymerase chain reaction, transcranial magnetic stimulation (TMS), functional magnetic resonance imaging (fMRI) under resting and task conditions, and measures of white matter integrity.ResultsMirror movements were associated with reduced DCC mRNA expression, increased ipsilateral TMS‐induced motor evoked potentials, increased fMRI responses in the mirroring M1 and cerebellum, and markedly reduced interhemispheric inhibition. The DCC+/− mutation, irrespective of mirror movements, was associated with reduced functional connectivity and white matter integrity.InterpretationDiverse connectivity abnormalities were identified in mutation carriers with and without mirror movements, but corticospinal effects and decreased peripheral DCC mRNA appeared driven by the mirror movement phenotype. ANN NEUROL 2019;85:433–442.
Neue Hochleistungs‐LEDs ermöglichen Photochemie für die Nahinfrarot‐sensibilisierte radikalische und kationische Photopolymerisation
Authors: Schmitz Christian , Pang Yulian , Gülz André , Gläser Marina , Horst Joachim , Jäger Martin , Strehmel Bernd 
Published: January 2019

AbstractCyaninderivate von Heptamethinen wurden mit Iodoniumsalzen auf ihre Fähigkeit zur Initiierung der radikalischen und kationischen Polymerisation von Tripropylenglykoldiacrylat und Epoxiden des Bisphenol‐A‐diglycidylether untersucht. Ein neuer Nahinfrarot(NIR)‐LED‐Prototyp, der bei 805 nm mit einer Strahlungsintensität von 1.2 W cm−2 emittiert, ermöglicht die Initiierung beider Polymerisationsarten. Dies liefert neue Einblicke in die Photochemie von Cyaninverbindungen des Strukturtyps 1, da die Kombination von photonischen und thermischen Prozessen den Reaktionsweg maßgeblich beeinflusst. Zum ersten Mal wird die Initiierung der kationischen Photopolymerisation von Epoxiden mit solchen NIR‐Absorbern beschrieben, wobei insbesondere Cyanine mit Cyclopentenyl‐ und Diphenylaminogruppen im Zentrum effizient sind. Die selektive Oxidation dieser Verbindung erklärt, weshalb speziell diese Derivate die kationische Polymerisation initiieren. Bei Austausch der Diphenylaminogruppe durch eine Barbituratgruppe in meso‐Position erfolgt hingegen keine Initiierung der kationischen Polymerisation.
Light‐Driven Single‐Electron Transfer Processes as an Enabling Principle in Sulfur and Selenium Multicatalysis
Authors: Breder Alexander , Depken Christian 
Published: January 2019

AbstractCooperativity has become a mainstay in the context of multicatalytic reaction design. The combination of two or more catalysts that possess mechanistically distinct activation principles within a single chemical setting can enable bond constructions that would be impossible for any of the catalysts alone. An emerging subdomain within the field of multicatalysis is characterized by single‐electron transfer processes that are sustained by the synergistic merger of sulfur or selenium organocatalysis with photoredox catalysis. From a synthetic viewpoint, such processes have tremendous value, as they can offer new and economic pathways for the concise assembly of complex molecular architectures. Thus, the aim of this Review is to highlight recent methodological progress made in this area and to contextualize representative transformations with the mechanistic underpinnings that enable these reactions.
Nonlocal spatial clustering in automated brain hematoma and edema segmentation
Authors: Tu Wei , Kong Linglong , Karunamuni Rohana , Butcher Ken , Zheng Lili , McCourt Rebecca 
Published: January 2019

AbstractHematoma and edema volume are potential predictors of 30‐day mortality rate and functional outcome (degree of disability or dependence in daily activities after a stroke) for patients with intracerebral hemorrhage. The manual segmentation of hematoma and edema from computed tomography scans is common practice but a time‐consuming and labor‐intensive task. Automated segmentation is an appealing alternative, but it is challenging because of the poorly defined boundary between edema and the surrounding healthy brain tissue. There is limited literature on this problem, and we aim to help fill the gap between the theoretical development of segmentation methods and the practical need. Our framework is fully automated and requires no supervision. The method uses nonlocal regularized spatial fuzzy C‐means clustering in the initialization stage and the active contour without edges method in the refinement stage. To evaluate it, we used 30 subjects with different sizes, shapes, and locations of hematoma and edema. Compared with the manual segmentation results from two independent raters, our method performs hematoma segmentation well, with an average dice score coefficient of 0.92. Although there is a lack of ground truth in edema segmentation due to the high inter and intrarater variation, our results are comparable with manual segmentation results.
Small‐vessel PCI outcomes in men, women, and minorities following platinum chromium everolimus‐eluting stents: Insights from the pooled PLATINUM Diversity and PROMUS Element Plus Post‐Approval studies
Authors: Guedeney Paul , Claessen Bimmer E. , Mehran Roxana , Kandzari David E. , Aquino Melissa , Davis Scott , Tamis Luis , Wang John C. , Othman Islam , Gigliotti Osvaldo S. , Haghighat Amir , Singh Sarabjeet , Lopez Mario , Giugliano Gregory , Horwitz Phillip A. , Sorrentino Sabato , Underwood Paul , Allocco Dominic , Meredith Ian T. , Batchelor Wayne 
Published: January 2019

AbstractObjectiveWe evaluated 1‐year outcomes after platinum chromium everolimus‐eluting stents (PtCr‐EES) in small versus non‐small coronary arteries within a large, diverse sample of men, women, and minorities.BackgroundThere exists limited outcomes data on the use of second‐generation drug‐eluting stent to treat small diameter coronary arteries.MethodsWe pooled patients from the PLATINUM Diversity and PROMUS Element Plus stent registries. Small‐vessel percutaneous coronary intervention (SV‐PCI) was defined as ≥1 target lesion with reference vessel diameter (RVD) ≤2.5 mm. Endpoints included major adverse cardiac event (MACE; death, myocardial infarction [MI] or target vessel revascularization [TVR]), target vessel failure (TVF; death related to the target vessel, target vessel MI or TVR) and definite/probable stent thrombosis (ST). Multivariable Cox regression was used to risk‐adjust outcomes.ResultsWe included 4,155/4,182 (99%) patients with available RVD, of which 1,607 (39%) underwent small‐vessel PCI. SV‐PCI was not associated with increased MACE (adjHR 1.02; 95%CI 0.81–1.30) or TVF (adjHR 1.07; 95%CI 0.82–1.39). MI risk was lower in white men compared to women and minorities, both in the setting of SV‐PCI (adjHR 0.41; 95%CI 0.23–0.74 and adjHR 0.39; 95%CI 0.20–0.75, respectively) and for non‐SV‐PCI (adjHR 0.61; 95%CI 0.38–0.99 and adjHR 0.45; 95%CI 0.27–0.74, respectively). There was no significant interaction between RVD and sex or minority status for any endpoint.ConclusionIn a large diverse contemporary PCI outcomes database, SV‐PCI with PtCr‐EES was not associated with increased MACE or TVR and did not account for the increased MI risk noted in women and minorities compared to white men.
Age‐related central regulation of orexin and NPY in the short‐lived African killifish Nothobranchius furzeri
Authors: Montesano Alessia , Baumgart Mario , Avallone Luigi , Castaldo Luciana , Lucini Carla , Tozzini Eva Terzibasi , Cellerino Alessandro , D'Angelo Livia , de Girolamo Paolo 
Published: January 2019

AbstractOrexin A (OXA) and neuropeptide Y (NPY) are two hypothalamic neuropeptides involved in the regulation of feeding behavior and food intake in all vertebrates. Accumulating evidences document that they undergo age‐related modifications, with consequences on metabolism, sleep/wake disorders and progression of neurodegenerations. The present study addressed the age related changes in expression and distribution of orexin A (its precursor is also known as hypocretin—HCRT) and NPY, and their regulation by food intake in the short‐lived vertebrate model Nothobranchius furzeri. Our experiments, conducted on male specimens, show that: (a) HCRT and OXA and NPY mRNA and protein are localized in neurons of diencephalon and optic tectum, as well as in numerous fibers projecting through the entire neuroaxis, and are colocalized in specific nuclei; (b) in course of aging, HCRT and NPY expressing neurons are localized also in telencephalon and rhombencephalon; (c) HCRT expressing neurons increased slightly in the diencephalic area of old animals and in fasted animals, whereas NPY increased sharply; (d) central HCRT levels are not regulated neither in course of aging nor by food intake; and (e) central NPY levels are augmented in course of aging, and regulated by food intake only in young. These findings represent a great novelty in the study of central orexinergic and NPY‐ergic systems in vertebrates', demonstrating an uncommon and unprecedented described regulation of these two orexigenic neuropeptides.
A novel mixed matrix membrane of phenolphthalein hydrazide and polysulfone for the detection of copper ions in environmental water samples
Authors: Sreeramareddygari Muralikrishna , Kempahanumakkagari Sureshkumar , Mahesh Padaki , Thippeswamy Ramakrishnappa , Devaramani Samrat , Mardi Radhakrishna Reddy , Carlos Fernandez , Govindappa Banuprakash 
Published: January 2019

The novel membrane test strip of phenolphthalein hydrazide (PH)‐polysulfone has been designed and demonstrated for Cu2+ ions detection. Before finding performance of membrane the studies with PH alone has been performed. Aqueous solutions of PH are colorless, but upon interaction with Cu2+ ions become pink (when 8.2 ≤ pH ≥ 12). The colorimetric change is initiated by the coordination of Cu2+ with PH as a polydentate ligand, opening the spirolactam ring that subsequently hydrolyses releasing phenolphthalein (P). Further membrane was preloaded with PH that could be used as a simple, low cost, and portable sensor for Cu2+ ions in environmental water samples. Given the detection limits of this sensor, a maximum response would warn the tester that Cu2+ concentrations were above safe drinking regulation values. Approximate concentrations can be determined via a color comparison chart.Different metal ions were tested in order to determine the chemodosimeters specificity, of the 12 tested ions only Hg2+ induced a similar molecular transformation (i.e., PH to P). The chemodosimeter allows the quantification of Cu2+ ions in the linear dynamic range of 0–22 μM. The Sandell sensitivity, limit of detection, limit of quantification, and relative standard deviation were found to be 0.276 μg/mL/cm2, 0.279 μM, 1.674 μM, and 0.682% respectively. © 2019 American Institute of Chemical Engineers Environ Prog, 38:e13146, 2019
MGF‐based analysis of κ‐μ/gamma composite fading model for indoor off body communication
Authors: Shankar Hari , Kansal Ankush 
Published: January 2019

AbstractThis paper presents the moment generating function (MGF)–based analysis of κ‐μ/gamma composite fading model, which is suitable for the indoor off‐body communication channel. In this paper, first of all, we derive an analytical expression for MGF of instantaneous signal‐to‐noise ratio. By using the derived MGF, the expressions of average symbol error rate (ASER)/average bit error rate (ABER) for binary and M‐ary modulation scheme are derived. Using the MGF approach, we also derive the expression of channel capacity for optimum rate adaption and channel inversion with fixed rate policy. The derived expressions for ABER/ASER and channel capacity are presented in the infinite series form. We further present the numerical results of error rate and channel capacity for different values of κ, μ, α, and β parameters. The result of ABER and channel capacity shows good agreement with the previously reported results as special cases that verify the derived expressions.
Determination of vitamin D in tears of healthy individuals by the electrochemiluminescence method
Authors: Lai Yu Tsun , Cerquinho Renato Galão , Perez Matheus Moreira , Alves Beatriz da Costa Aguiar , Pereira Edimar Cristiano , Azzalis Ligia Ajaime , Junqueira Virginia Berlanga Campos , Soares Lismeia Raimundo , Fonseca Fernando Luiz Affonso 
Published: January 2019

BackgroundVitamin D is a fat‐soluble steroid hormone which can be converted into various forms and is of extreme physiological importance to our body. However, its functions and local metabolic pathways in some organs, such as the eye, have not yet been well studied. We aimed to verify the correlation between vitamin D levels in blood and tear fluid and the possibility of using tear fluid as a biological material for monitoring eye disorders in the future.MethodsThe electrochemiluminescence method was used to examine blood and tear samples collected with Schirmer test strips from 21 individuals without ocular disease.ResultsAt the 95% confidence interval, mean tear fluid vitamin D = 37.8 ± 3.6 ng/mL, which is higher than the serum level, with a mean of 30.3 ± 7.7 ng/mL; Lin's concordance correlation coefficient = −0.018 (−0.174; 0.139), Pearson's coefficient = −0.070, and the Bland‐Altman coefficient = −11.12 (−30.40; 8.16). Results were obtained using the program Stata version 11.0.ConclusionIt is possible to determine vitamin D levels in tear fluid using the electrochemiluminescence method, and as the results do not correlate with blood, there is possibility of using tear fluid as a biological matrix for detection of vitamin D, which may increase the possibilities of new studies in eye disorders.