bluuebunny/crossref_metadata_2025 huggingface dataset:
Online Prediction Control Model of CO2 Concentration for Pleurotus eryngii in the Sporocarp Period Based on Matlab and LabVIEW
Authors: Tian Xiao Qing , Zhang Kang , Bai Nan , Zhu Xue Jun
Published: July 2017

In the industrialized cultivation process of fungi, CO2 concentration control system is a nonlinear, time-delay and time-varying system, which is difficult to establish a precise mathematical model. Considering the situation, CO2 concentration prediction model that based on neural network was built, and a fuzzy controller was proposed further based on the prediction model. Finally, matlab/labview based online forecast model was finished, and it is verified that the prediction system has higher prediction accuracy with robust character. It also provides a new approach to control key environmental factors under more favorable conditions for mushroom growth.
Development and Experimental Study of the Online Dynamic Balance System for Grinding Machine
Authors: Yun Xia Lun , Hu Zheng Bang , Ma Xiao Bo , Mei Xue Song , Jiang Ge Dong
Published: July 2017

The vibration of grinding wheel spindle will significantly reduce the machining quality and machining accuracy of precision grinding. In order to suppress the grinding wheel rotor vibration effectively, the Spray-Typed online dynamic balance system for specific grinding wheel spindle was designed composed of terminal balance, hydraulic system and control system. To achieve the amount of spindle unbalance accurate extraction and liquid volume control, using hydraulic system to achieve the balance of the terminal of the liquid loading and using high-performance DSP chip as a control method. A segmented spindle online dynamic balance method , combining the advantages of influence coefficient method and coordinate rotation optimization method was proposed. The method can fast approaching the goal of balancing and meet the local precise adjustment of the balance weight. At last, the online dynamic balance experiment of grinding wheel spindle is carried out in the industrial field, the grinding spindle vibration displacement amplitude decreased from 17.8 to 7.7 before and after balance, fall by as much as 55%, which verifies the validity and feasibility of the system.
New Designs in Fuel Dispensing System to Control Maximum Flow of Volatile Liquid
Authors: Liu Ya Jun , Zhan Shu Yan , Ye Jia Kun , Xie Wen Hua
Published: July 2017

The dispenser is a fuel pumping and measurement device used in the service station. During the refueling process of volatile liquid, the cavitation phenomenon occur easily due to the large flow rate. The serious cavitation will not only reduce the pumping efficiency, produce loud work noise, but also aggravate the pollution of oil and gas and the energy consumption of the system. Therefore, it is necessary to control the maximum flow rate of the pump. Based on this problem, this paper firstly designs a new flow control valve, and a method of mathematical modeling is proposed to analyze the flow field distribution and the working principle of the whole device based on Euler equation and Bernoulli equation. Then we combine this new hydraulic device to the variable frequency dispenser, a new design of the dispenser structure and a control mode of the maximum flow are proposed. The theoretical research shows that the maximum flow can be limited by optimizing diameter ratio of that flow control valve.
Integration of Cutting Robot with CAD/CAM System Based on STEP-NC
Authors: Fang Li Jin , Li Li , Wang Guo Xun
Published: July 2017

In order to solve the problem of openness, intelligence and low integration in the current machining robot control system, STEP-NC standard is introduced into the field of robot machining, and defines the STEP-NC data model of industrial robots. The 6R industrial robots are used to build the machining platform and the connection between the machining robot and the CAD / CAM system and the integrated data stream structure are discussed. The key issues involved in the post processing of the machining robot are studied. Taking the 6R robot as an example, the robot prototype system is established, and the kinematics solution in the post-processing process is studied and deduced. The cutting and post-processing system platform of cutting robot was established and the sample art machining was completed. The experimental and simulation results show that the system can complete the machining process of the cutting robot and generate executable robot machining instructions.
Fibre Bragg grating and Brillouin optical time domain reflectometry monitoring manual for the Ripley Landslide, near Ashcroft, British Columbia
Authors: Huntley D , Bobrowsky P , Zhang Q , Zhang X , Lv Z
Published: July 2017

An international multi-year project is investigating and monitoring the Ripley Landslide, 7 km south of Ashcroft, British Columbia. The aim of this collaborative work is to better understand and manage landslides along Canada's western railway corridor. From 2013
to 2016, the China Geological Survey (CGS) and Geological Survey of Canada (GSC) collaborated to test and evaluate experimental fibre Bragg grating (FBG) and Brillouin optical time domain reflectometry (BOTDR) technologies on an active landslide for the first time in Canada. Open File 8258 describes
the operational procedures for these monitoring systems. FBG and BOTDR monitoring systems were installed on a lock-block retaining wall that separates the Canadian National (CN) and Canadian Pacific Railway (CP) tracks. This vital component of railway infrastructure crosses the southern extent of
the main slide body; and was monitored with the aims of better understanding the deformation mechanisms and potential triggers for sudden movement; and managing the risks associated with railway operations. Monitoring data was processed on site then accessed by wireless transmitter from remote
terminals at the CGS and GSC offices. Results, discussed in the context of interpretations from other physical surveys of the landslide, provide new insight into the nature and distribution of surficial earth materials, their stratigraphic relationships, internal structure of the landslide, and
structural integrity of critical railway infrastructure. This study demonstrates that optical fibre sensing real-time techniques are viable, cost effective monitoring methods that can ensure the safety and security of the railways, thereby reducing risks to national public safety, the environment,
natural resources and international economies.
Commodification, decolonisation and theological education in Africa: Renewed challenges for African theologians
Authors: Hadebe Nontando M.
Published: July 2017

The commodification of higher education is a global phenomenon that many argue has reduced education into a product that serves the interests of global capitalism and perpetuates the hegemony of western knowledge. Decolonisation discourses demand for access and an Africanised curriculum constitutes resistance to commodification. Theological education as part of higher education has not escaped commodification. African theologians pioneered resistance against the hegemony of western theologies. However, there are additional factors driving commodification, such as high demand for training, that outstrip supply because of the phenomenal growth of Christianity and rise in Christian consumerism. African theologians therefore need to continue resisting western hegemony and also pursue critical dialogues with decolonisation movements as well as all stakeholders such as churches, government and civil society as resistance to commodification. The inclusive and communitarian methodology of the Theological Colloquium on Church, Religion and Society in Africa will be critically assessed for its potential as a possible model.
Theologia and the ideologia of language, nation and gender – Gateway to the future from a deconstructed past
Authors: Van Aarde Andries G.
Published: July 2017

The article is a contribution to the centennial celebration of the Faculty of Theology at the University of Pretoria. It forms part of the section in the programme titled ‘Ethos – Critical perspectives on our past and a gateway to our future’ and is dedicated to Yolanda Dreyer who was the first female professor appointed in the Faculty of Theology of the University of Pretoria. The article reflects on aspects of the present-day populist discourse in South Africa and globally, which is enhanced by neonationalistic separatism. The following issues are critically discussed: homophobia regarding sexual minorities, a lack of sensitivity for the negative effects of male domination and the objection to English as the lingua franca for teaching. These aspects are assessed against the background of the Derridean notion of ‘deconstruction’ and the contributions of the first professors employed in the Faculty of Theology since its inception in 2017.
Speech act theory as an approach to interpret Gospel narratives
Authors: Goede Hennie
Published: July 2017

No abstract available.
Benchmarking criteria for evaluating third-party logistics providers in South Africa
Authors: Karrapan Claudia , Sishange Mndeni , Swanepoel Elana , Kilbourn Peter J.
Published: July 2017

Background: In South Africa, deemed the ‘gateway to Africa’, there is limited evidence of the existence of a survey ranking third-party logistics providers (3PLs). This lack of comparative information of the major 3PLs based on key outsourcing and ranking criteria complicates the selection process for companies that intend to contract 3PLs.Objective: The purpose of this article was to determine the critical selection and ranking criteria for the creation of an index to evaluate 3PLs in South Africa for developing a 3PL benchmarking index.Method: Survey data were collected from 103 of the Top 500 Companies in Africa that use 3PLs and operate within the sectors that mostly outsource logistics services in South Africa. A factor analysis method was employed.Results: Three factors for 3PLs selection converged: service quality, information management and compliance, and collaboration. The top three ranked categories for 3PLs selection are cost and price structure, service delivery and the relationship with the 3PL provider. Most respondents (90%) confirmed a need for a 3PLs index in South Africa.Conclusion: The results help managers with the strategic selection of 3PLs as these critical logistics outsourcing selection criteria can be used to evaluate and rank 3PLs prior to contracting. Based on the selection criteria for logistics outsourcing identified and ranked in this article, a ranking index for 3PLs in South Africa can be developed.
Facilitating pragmatic skills through role-play in learners with language learning disability
Authors: Abdoola Fareeaa , Flack Penelope S. , Karrim Saira B.
Published: July 2017

Background: Role-based learning involves the process whereby learners acquire skills, knowledge and understanding through the assumption of roles within real-life settings. Role-play holds potential as an effective learning strategy for children; however, there is limited research on the use of role-play as a therapy method within the field of speech-language pathology. Children with language learning disability (LLD) typically present with difficulties in social communication, which can negatively affect their social and academic achievement.Aim: The aim of this study was to determine the effectiveness of role-play as a therapy approach targeting the pragmatic skills of stylistic variation and requesting for clarification in learners with LLD.Method: The use of combined positivist and interpretivist paradigms allowed for the implementation of an embedded mixed methods design. An experimental pretest-posttest design was implemented. Eight participants, who were learners with a diagnosis of LLD, were purposefully selected. Data collection was conducted over five phases, utilising the Clinical Evaluation of Language Fundamentals (4th Ed.) Pragmatics Profile, discourse completion tasks, session plans and session records. Quantitative data were analysed using descriptive statistics and were supplemented by qualitative data from session records.Results: Results revealed improvements in stylistic variation and requesting for clarification post role-play intervention, with minimal changes in the control group. Limitations of the study have been reported for consideration when interpreting results.Conclusion: Role-play as a therapy approach targeting two pragmatic skills, stylistic variation and requesting for clarification, was found to be beneficial for learners with LLD. Recommendations for the implementation of role-play as a therapy approach were made.
Interobserver reproducibility of The Paris System for Reporting Urinary Cytology
Authors: Long Theresa , Layfield Lester J. , Esebua Magda , Frazier Shellaine R. , Giorgadze D. Tamar , Schmidt Robert L.
Published: July 2017

Background:

The Paris System for Reporting Urinary Cytology represents a significant improvement in classification of urinary specimens. The system acknowledges the difficulty in cytologically diagnosing low-grade urothelial carcinomas and has developed categories to deal with this issue. The system uses six categories: unsatisfactory, negative for high-grade urothelial carcinoma (NHGUC), atypical urothelial cells, suspicious for high-grade urothelial carcinoma, high-grade urothelial carcinoma, other malignancies and a seventh subcategory (low-grade urothelial neoplasm).

Methods:

Three hundred and fifty-seven urine specimens were independently reviewed by four cytopathologists unaware of the previous diagnoses. Each cytopathologist rendered a diagnosis according to the Paris System categories. Agreement was assessed using absolute agreement and weighted chance-corrected agreement (kappa). Disagreements were classified as low impact and high impact based on the potential impact of a misclassification on clinical management.

Results:

The average absolute agreement was 65% with an average expected agreement of 44%. The average chance-corrected agreement (kappa) was 0.32. Nine hundred and ninety-nine of 1902 comparisons between rater pairs were in agreement, but 12% of comparisons differed by two or more categories for the category NHGUC. Approximately 15% of the disagreements were classified as high clinical impact.

Conclusions:

Our findings indicated that the scheme recommended by the Paris System shows adequate precision for the category NHGUC, but the other categories demonstrated unacceptable interobserver variability. This low level of diagnostic precision may negatively impact the applicability of the Paris System for widespread clinical application.
The Litchfield Pluton in South-Central Maine: Carboniferous Alkalic Magmatism in northern New England, USA
Authors: West David P , Bradley Dwight , Coish Raymond
Published: July 2017

The Litchfield pluton is a poorly exposed 7 km2 composite alkalic intrusive complex that cuts previously deformed and metamorphosed Silurian turbidites in south-central Maine.  The pluton includes a variety of alkaline syenites, including the type locality of “litchfieldite”, a coarse-grained cancrinite, sodalite, and lepidomelane bearing nepheline syenite first recognized over 150 years ago and common in many petrologic collections.  A new U-Pb zircon age of 321 ± 2 Ma from the nepheline syenite is interpreted to represent the crystallization age of the plutonic complex.  A new biotite 40Ar/39Ar age of 239 ± 1 Ma from the syenite is similar to previously published mica ages from the surrounding country rocks and dates the time of regional cooling in the area below ~ 300°C.  Whole rock geochemical analyses from rocks of the Litchfield pluton are compatible with strongly alkaline A-type granitoid rocks that formed in a within plate or continental rift tectonic setting.  The age and geochemical characteristics of the alkalic igneous rocks near Litchfield are consistent with a model that invokes the generation of a small volume of alkalic magma beneath south-central Maine during a period of Carboniferous transcurrent tectonism in the northern Appalachian orogen.
Bifurculapes Hitchcock 1858: a revision of the ichnogenus
Authors: Getty Patrick Ryan
Published: July 2017

Characters differentiating the arthropod trackway Bifurculapes from the similar ichnogenera Lithographus and Copeza include the position, arrangement and orientation of the tracks within the series. Of the five species of Bifurculapes originally described, only Bifurculapes laqueatus and Bifurculapes scolopendroideus are recognized herein; the other three ichnospecies are considered to be nomina dubia or junior subjective synonyms of Bifurculapes laqueatus. Two new specimens, recovered from the Early Jurassic East Berlin Formation of the Hartford Basin in Holyoke, Massachusetts, represent only the second unequivocal occurrence of the ichnogenus outside of the Deerfield Basin. Bifurculapes is currently known only from the Early Jurassic.
Provenance and paleogeography of post-Middle Ordovician, pre-Devonian sedimentary basins on the Gander composite terrane, eastern and east-central Maine: implications for Silurian tectonics in the northern Appalachians
Authors: Ludman Allan , Hopeck John T. , Berry IV Henry N.
Published: July 2017

Recent mapping in eastern and east-central Maine addresses long-standing regional correlation issues and permits reconstruction of post-Middle Ordovician, pre-Devonian paleogeography of sedimentary basins on the Ganderian composite terrane. Two major Late Ordovician-Silurian depocenters are recognized in eastern Maine and western New Brunswick separated by an emergent Miramichi terrane: the Fredericton trough to the southeast and a single basin comprising the Central Maine and Aroostook-Matapedia sequences to the northwest. This Central Maine/Aroostook-Matapedia (CMAM) basin received sediment from both the Miramichi highland to the east and highlands and islands to the west, including the pre-Late Ordovician Boundary Mountains, Munsungun-Pennington, and Weeksboro-Lunksoos terranes. Lithofacies in the Fredericton trough are truncated and telescoped by faulting along its flanks but suggest a similar basin that received sediment from highlands to the west (Miramichi) and east (St. Croix).Deposition ended in the Fredericton trough following burial and deformation in the Late Silurian, but continued in the CMAM basin until Early Devonian Acadian folding. A westward-migrating Acadian orogenic wedge provided a single eastern source of sediment for the composite CMAM basin after the Salinic/Early Acadian event, replacing the earlier, more local sources. The CMAM, Fredericton, and Connecticut Valley-Gaspé depocenters were active immediately following the Taconian orogeny and probably formed during extension related to post-Taconian plate adjustments. These basins thus predate Acadian foreland sedimentation.Structural analysis and seismic reflection profiles indicate a greater degree of post-depositional crustal shortening than previously interpreted. Late Acadian and post-Acadian strike-slip faulting on the Norumbega and Central Maine Boundary fault systems distorted basin geometries but did not disturb paleogeographic components drastically.
Fixation and redistribution of arsenic during early and late diagenesis in the organic matter-rich members of the Lockatong Formation, Newark basin, USA: implication for the quality of groundwater
Authors: Rddad Larbi
Published: July 2017

The Byram and Walls Island members in the lower and upper sections, respectively, of the Lockatong Formation in the Newark basin near the border between Pennsylvania and New Jersey were chosen to assess (i) the role of euxinic/anoxic conditions in sequestering arsenic (As) and other trace elements and (ii) the redistribution of these elements during catagenetic transformations. ἀese members are rich in organic matter and host pyrite which occurs as disseminations, small patches, and subparallel veins. ἀe sulfur isotope values of pyrite samples range between -7.5 and 0.5 ‰CDT (average = -3.5‰CDT). ἀe negative δ34S values are indicative of Bacterial Sulfate Reduction (BSR) under low temperature and euxinic/anoxic conditions. ἀe total organic carbon (TOC) values in this member ᴀuctuate between 0.5 and 2.1%. ἀese euxinic/anoxic conditions enhanced the incorporation of As and other trace elements in both organic matter and pyrite. ἀe As concentrations range from 13 to 800 mg/kg and from 1.4 to 34 mg/kg in pyrite and black shale samples, respectively. Rock Eval analyses reveal that organic matter is over-mature which altered the correlation between TOC and As. ἀe thermal cracking of organic matter resulted in the removal of these elements from organic matter and their subsequent incorporation in pyrite and bitumen. Organic matter- and pyrite-rich anoxic black shale layers and bitumen veins are potential sources of arsenic in groundwater in the Newark basin, with arsenic values that reach up to 215 μg/L.
A new record of the non-native fish species Butis koilomatodon (Bleeker 1849) (Teleostei: Eleotridae) for southeastern Brazil
Authors: Contente Riguel Feltrin , Brenha-Nunes Marina Rito , Siliprandi Carolina Correia , Lamas Rafael Andrei , Conversani Valéria Regina Martins
Published: July 2017

http://dx.doi.org/10.5007/2175-7925.2016v29n2p113Neste trabalho, reportamos o segundo registro do peixe invasor, Butis koilomatodon, na costa de São Paulo (Sudeste do Brasil), o que representa, também, o registro mais ao sul no sudoeste do Oceano Atlântico. Discutimos os riscos de uma potencial invasão mediada pelos impactos antrópicos na área de ocorrência.
Caracterização biométrica de tubarões do gênero Sphyrna (Griffith & Smith, 1834) no litoral de Sergipe
Authors: Andrade Jéssica Barros , Santos Daniela Nascimento , Silva Maraisa Oliveira , Reis Santos Thays Brito , Meneses Thiago Silveira , Coelho Andressa Sales
Published: July 2017

http://dx.doi.org/10.5007/2175-7925.2016v29n2p45Os tubarões, quimeras e raias pertencentes ao grupo de Elasmobrânquios da Classe dos Condrichthyes, possuem uma maturação e desenvolvimento lento e são animais bastante capturados em pescas acompanhantes, tornando-se animais vulneráveis à extinção. Seis espécies do gênero Sphyrna são encontradas no Brasil, em zona costeira-oceânica, três destas foram estudadas: Sphyrna lewini, Sphyrna mokarran e Sphyrna tiburo. O estudo teve como objetivo obter a biometria, identificação do sexo e o estágio de desenvolvimento sexual do gênero Sphyrna na pesca artesanal de Aracaju – SE. Para o trabalho foram utilizados animais da coleção do GEES e animais frescos adquiridos da pesca local. S. tiburo foi encontrada apenas na coleção. As espécies S. mokarran e S. lewini obtiveram mais indivíduos neonatos e machos, e S. tiburo, fêmeas e juvenis. Para as espécies frescas, a medida peitoral-pélvica foi maior em fêmeas e pélvico-anal maior nos machos de S. lewini. O peso foi maior na S. lewini, e para o comprimento total, largura da cabeça e comprimento interdorsal não houve diferença entre os espécimes. Os parâmetros medidos não apresentaram resultados significativos, o que pode estar relacionado à característica da pesca, que apresentou muitos indivíduos imaturos.
Influências climáticas na produção de serapilheira em um cerradão em Prata – MG
Authors: Siqueira Thiago Mendes , Pinheiro Marcelo Henrique Ongaro , Silva Diego Gonçalves , Franco Talita Moura
Published: July 2017

http://dx.doi.org/10.5007/2175-7925.2016v29n2p7O estudo teve como objetivo principal analisar a influência climática na produção de serapilheira, em um pequeno fragmento de cerradão em Minas Gerais, Brasil, durante um ano. Foram utilizados 20 coletores (0,25 m2), dispostos em linha. A produção de serapilheira total foi de 7,5 t.ha-1.ano-1, composta pelas frações folhas, ramos e estruturas férteis. A fração foliar contribuiu com 67% do total acumulado em um ano. A correlação de Pearson (r) indicou a influência das variáveis climáticas precipitação e temperaturas médias e mínimas na produção da fração foliar. A análise de r resultou também em valor significativo entre ramos e velocidade média do vento, enquanto que estruturas férteis sofreram influência da precipitação, temperaturas médias máximas e mínimas. Características vegetacionais podem ter interferido nos resultados encontrados. Todavia, estudos complementares envolvendo análises fitossociológica e de ciclagem de nutrientes deverão ser desenvolvidos para a comprovação de hipóteses propostas.
Use and preservation methods of bone grafts in small animals
Authors: Agopian Rafael Garabet , Oliveira Brunna Duarte Braz , Guimarães Katia Oliveira Pimenta , Silva Marcos Vinicius Mendes , Borghesi Jéssica , Barreto Rodrigo Silva Nunes , Favaron Phelipe Oliveira
Published: July 2017

http://dx.doi.org/10.5007/2175-7925.2016v29n3p11O presente estudo descreve as principais características dos enxertos ósseos em pequenos animais. Enxertos ósseos são tecidos avasculares e que facilitam a produção de novas células ósseas com capacidade osteogênica e osteoindutiva, facilitando a diferenciação celular e suporte para a medula óssea. O transplante do enxerto é sucedido por três fases: osteogênese, levando a formação de novo osso; osteoindução, que é a diferenciação das células; e osteocondução, o processo e crescimento de células mesenquimais e capilares, resultando na formação da medula óssea. Os enxertos ósseos podem ser provenientes de áreas esponjosas, corticais, esponjo-cortical, cartilagem ou medula óssea. Eles também podem ser classificados quanto a sua origem, sendo eles autógeno (proveniente do mesmo indivíduo), alógeno (proveniente de outro indivíduo da mesma espécie), ou mesmo xenólogo (proveniente de indivíduo de outra espécie).
Proximidade de rodovias pode influenciar a fragmentação florestal? Um estudo de caso no norte do Rio Grande do Sul
Authors: Rezzadori Tiago , Hartmann Marilia Teresinha , Hartmann Paulo Afonso
Published: July 2017

http://dx.doi.org/10.5007/2175-7925.2016v29n3p21O estabelecimento e o uso das rodovias interferem na atmosfera, no solo, na vegetação, na fauna e nas comunidades humanas que estão em seu entorno. Um dos principais efeitos causados pela implantação e operação de uma rodovia é a fragmentação das paisagens naturais, que consequentemente gera o efeito de borda e o isolamento de populações. Nesse sentido, o objetivo deste estudo foi quantificar e comparar a distribuição da cobertura vegetal em áreas com e sem influência ecológica de rodovias na região do Alto Uruguai, norte do Rio Grande do Sul. Para tal, foi criado um banco de dados georrelacional, onde foram inseridas imagens de satélite Landsat V e CBERS 2b. Foi estimado o tamanho e quantidade de fragmentos florestais nas áreas com e sem influência das rodovias. A área com influência ecológica de rodovias apresentou menos fragmentos florestais e de menor tamanho quando comparada com a área sem influência ecológica. A alta fragmentação florestal parece ser potencializada pela proximidade das rodovias na região norte do Rio Grande do Sul, contribuindo para o isolamento e redução do tamanho das populações nativas que ocupam essas áreas.
Caracterização morfofisiológica de bactérias nativas de solos do Cerrado isoladas de nódulos de feijão-caupi
Authors: De Araújo Clicyane Lima , Gualter Régia Maria Reis
Published: July 2017

http://dx.doi.org/10.5007/2175-7925.2017v30n1p25Características como tolerância ao pH, à temperatura, à salinidade e à concentração elevada de alumínio podem ser verificadas em rizóbios nativos oriundos de solos tropicais. Essas particularidades são relevantes em estudos de fixação biológica de nitrogênio, especialmente em Vigna unguiculata L. Walp. (feijão-caupi), uma cultura representativa de suma importância econômica para a agricultura familiar das diferentes regiões brasileiras, especialmente do Norte e Nordeste. Assim, o objetivo deste trabalho foi isolar e caracterizar morfofisiologicamente bactérias nativas de solos do Cerrado leste maranhense, utilizando o feijão-caupi como planta-isca. O estudo foi realizado em Caxias, MA entre os anos de 2014 e 2015. Os isolados foram oriundos de nódulos de feijão-caupi, provenientes de amostras de solos de três áreas diferentes: mata especialmente composta de babaçuais, de cultivos de Manihot esculenta (mandioca) e de Desmanthus virgatus L. (jureminha). Os isolados foram submetidos à caracterização morfológica de suas colônias e a testes fisiológicos como: teste de tolerância às altas temperaturas, à acidez, ao alumínio e às altas salinidades. Os isolados obtidos evidenciaram significativa diversidade morfológica. Os testes fisiológicos demonstraram que a maioria deles é resistente às altas temperaturas, à acidez e ao alumínio tóxico, mas poucos deles são resistentes às altas salinidades.
Manejo hídrico na rustificação em mudas de Maytenus ilicifolia [(Schrad.) Planch.]
Authors: Dranski João Alexandre Lopes , Malavasi Ubirajara Contro , Malavasi Marlene De Matos
Published: July 2017

http://dx.doi.org/10.5007/2175-7925.2017v30n1p45Avaliou-se o efeito do tamanho da muda e do manejo da irrigação ao final do ciclo de produção sobre a qualidade de mudas de Maytenus ilicilofia. O experimento seguiu o delineamento inteiramente ao acaso em arranjo fatorial 2x3, em que mudas de duas classes de altura (maior ou menor que 18,0 cm) foram submetidas a três regimes hídricos (rega diária, rega a cada dois dias e redução gradativa da irrigação). Após oito semanas, quantificaram-se atributos morfofisiológicos e de desempenho. A redução gradativa da irrigação promoveu maior taxa de assimilação líquida de carbono. A rega a cada dois dias possibilitou maior taxa de crescimento secundário, velocidade de acúmulo de biomassa nos tecidos aéreos e radiculares, com menor taxa de extravasamento de eletrólitos. Após o plantio, esses tratamentos mantiveram o maior teor relativo de água nas folhas (TRA). O TRA em mudas de menor tamanho foi significativamente maior até a terceira semana do plantio. Portanto, mudas de maior tamanho, submetidas à rustificação por redução gradativa do regime de regas, apresentam melhor qualidade.
Utilização de espécies exóticas na arborização e a facilitação para o estabelecimento de casos de invasão biológica
Authors: Fabricante Juliano Ricardo , Santos João Paulo Bispo , Araújo Kelianne Carolina Targino de , Cotarelli Vinicius Messas
Published: July 2017

http://dx.doi.org/10.5007/2175-7925.2017v30n1p55O presente estudo teve como objetivo inventariar as espécies utilizadas na arborização do campus de Ciências Agrárias (CCA) da Universidade Federal da Paraíba (UFPB), Areia, PB e classificá-las de acordo com sua origem e seu potencial invasor. Por meio de caminhadas por toda a área de estudo (busca ativa) foram inventariadas todas as espécies utilizadas na arborização local e classificadas em nativas e exóticas. As exóticas ainda foram classificadas quanto ao seu potencial invasor. Ao todo foram identificadas 76 espécies pertencentes a 67 gêneros e 25 famílias. Destas, apenas 26 espécies eram nativas. Os resultados do presente trabalho são preocupantes devido ao elevado número de espécies exóticas utilizadas na arborização do local de estudo (50 spp.) e pela presença de espécies reconhecidamente agressivas, a exemplo de Artocarpus heterophyllus Lam., Azadirachta indica A. Juss. e Leucaena leucocephala (Lam.) de Wit.
Fauna de répteis dos remanescentes florestais e cultivos agrícolas da Fazenda Cambuhy, municípios de Matão, Nova Europa e Tabatinga, região Noroeste do estado de São Paulo
Authors: Barros Ana Bárbara , Alcântara Menezes Frederico , Falconi José Ricardo , Ribeiro Giovanelli João Gabriel
Published: July 2017

http://dx.doi.org/10.5007/2175-7925.2017v30n1p79A região Noroeste é a mais desmatada e com menor concentração de Unidades de Conservação do estado de São Paulo. Apesar dos avanços científicos recentes, ainda existem lacunas de conhecimento de herpetofauna. O presente estudo teve como objetivo fornecer informações sobre riqueza, abundância e uso do habitat dos répteis da Fazenda Cambuhy, que abrange os municípios de Matão, Nova Europa e Tabatinga. As amostragens ocorreram entre os anos de 2013 a 2015, utilizando-se quatro metodologias: armadilhas de interceptação e queda, procura visual limitada por tempo, procura em estradas e encontros ocasionais. Foram incluídos também os registros disponíveis em coleções científicas e na literatura. Foram registradas 46 espécies de répteis pertencentes aos grupos Squamata e Crocodylia. As espécies mais frequentes foram Salvator merianae (N = 55), espécie mais abundante em todos os ambientes amostrados, Notomabuya frenata (N = 14), amostrada somente nas florestas e Ameiva ameiva (N = 4), registrada nos ambientes antrópicos e florestais. A composição de espécies registrada reflete o posicionamento da área de estudo, apresentando a maioria das espécies associadas aos biomas Cerrado e Mata Atlântica. A riqueza de répteis da Fazenda Cambuhy representa 21% da riqueza de répteis do estado, sendo de grande significância para conservação da herpetofauna da região Noroeste do estado de São Paulo.
Heterologous expression of predicted promoter site for paraquat-inducible genes of the bacterium Chromobacterium violaceum is increased by plumbagin
Authors: Gabriel Jane Eyre , De Souza Emanuel Maltempi , De Carvalho Francisco Allan Leandro , Madeira Humberto Maciel França
Published: July 2017

http://dx.doi.org/10.5007/2175-7925.2017v30n2p1O objetivo deste estudo foi avaliar funcionalmente a influência do composto plumbagin sobre a indução heteróloga de uma região promotora predita de genes paraquat-induzíveis revelada durante as análises de anotação do genoma da bactéria Chromobacterium violaceum. A região promotora de interesse de C. violaceum foi amplificada a partir de sequências oligonucleotídicas específicas e clonada em vetor conjugativo, sendo acoplada à região codificante do gene lacZ de Escherichia coli. Em seguida, a indução heteróloga desse segmento regulatório foi estimada em cepa de E. coli na presença do plumbagin em uma concentração final de 50 µg/mL por mensurações dos níveis de expressão da enzima β-galactosidase. Diferenças significativas nos níveis da β-galactosidase foram observadas como resultado da ativação da região promotora de interesse pelo plumbagin na concentração testada em comparação às condições controle. Por outro lado, nenhum crescimento da cepa selvagem de C. violaceum foi observado durante a incubação dessas células em meio nutritivo contendo diferentes concentrações do plumbagin. As descobertas descritas aqui sugerem que uma região promotora predita para genes paraquat-induzíveis da bactéria C. violaceum sofra indução heteróloga pelo plumbagin, reforçando evidências acerca da caracterização funcional de motivos regulatórios intrínsecos a essa bactéria.
Further records of rare brachyuran crab Eucrate indica (Crustacea: Decapoda: Brachyura Euryplacidae) along the Chennai coast, Tamil Nadu, India
Authors: Silambarasan K , Sujatha K , Rajalakshmi E , Sundaramanickam A
Published: July 2017

http://dx.doi.org/10.5007/2175-7925.2017v30n2p51Este estudo relata uma nova ocorrência do caranguejo Eucrate indica (Crustacea: Decapoda: Brachyura: Euryplacidae) ao longo da costa de Chennai, Tamil Nadu, Índia. Os caranguejos foram obtidos a uma profundidade de 40-60 m, através de captura acidental de arrasto. As características morfológicas, cor e distribuição destes caranguejos são dadas.
Promoting Physical Activity and Nutrition in People With Stroke
Authors: Bailey Ryan R.
Published: July 2017

The prevalence of cardiovascular disease, diabetes, and obesity is high in people with stroke. Risk factors for these conditions include hypertension, high cholesterol, and physical inactivity. These risk factors are common in people with stroke and often go unmanaged. Engagement in healthy behaviors is important for managing and preventing these risk factors and comorbid conditions. More specifically, physical activity and nutrition are key health behaviors for the management and maintenance of health in people with stroke. These health behaviors, by their very nature, are also occupations; thus, they are influenced by client factors, performance skills and patterns, and environments and contexts. This article discusses physical activity and nutrition within the context of the Occupational Therapy Practice Framework: Domain and Process and proposes potential roles for occupational therapy practitioners and researchers in developing, testing, and providing physical activity and nutrition interventions for people with stroke.
Examining Sensory Overresponsiveness in Preschool Children With Retentive Fecal Incontinence
Authors: Beaudry-Bellefeuille Isabelle , Lane Shelly J.
Published: July 2017

The development of bowel control is an important activity of daily living in early childhood, and challenges in this area can limit participation in key occupations. Retentive fecal incontinence (RFI) is a common disorder in children. Up to 50% of children do not respond adequately to initial medical intervention, and behaviors around toileting, some related to sensory overresponsivity (SOR), may be partly responsible. Therefore, this study investigated the relationship between RFI and SOR and also examined the discriminative validity of the Toileting Habit Profile Questionnaire (THPQ). Per parent report, children with RFI (n = 16) showed significantly more behaviors related to SOR compared with typically developing children (n = 27). In addition, results indicated that the THPQ effectively discriminates between children with RFI and typically developing children. Results are discussed regarding RFI and SOR, the impact of RFI on childhood occupational engagement, and the role of occupational therapy with this population.
Occupational Therapy Interventions for Adults With Cancer
Authors: Braveman Brent , Hunter Elizabeth G. , Nicholson Jennifer , Arbesman Marian , Lieberman Deborah
Published: July 2017

This Evidence Connection describes a case report of a man with non-Hodgkin’s lymphoma who underwent an allogenic stem cell transplant. The occupational therapy assessment and treatment processes for an outpatient rehabilitation setting are described. Evidence Connection articles provide a clinical application of systematic reviews developed in conjunction with the American Occupational Therapy Association’s Evidence-Based Practice Project.
Modeling the role of highly oxidized multifunctional organic molecules for the growth of new particles over the boreal forest region
Authors: Öström Emilie , Putian Zhou , Schurgers Guy , Mishurov Mikhail , Kivekäs Niku , Lihavainen Heikki , Ehn Mikael , Rissanen Matti P. , Kurtén Theo , Boy Michael , Swietlicki Erik , Roldin Pontus
Published: July 2017

Abstract. In this study, the processes behind observed new particle formation (NPF) events and subsequent organic-dominated particle growth at the Pallas Atmosphere–Ecosystem Supersite in Northern Finland are explored with the one-dimensional column trajectory model ADCHEM. The modeled sub-micron particle mass is up to  ∼  75 % composed of SOA formed from highly oxidized multifunctional organic molecules (HOMs) with low or extremely low volatility. In the model the newly formed particles with an initial diameter of 1.5 nm reach a diameter of 7 nm about 2 h earlier than what is typically observed at the station. This is an indication that the model tends to overestimate the initial particle growth. In contrast, the modeled particle growth to CCN size ranges ( >  50 nm in diameter) seems to be underestimated because the increase in the concentration of particles above 50 nm in diameter typically occurs several hours later compared to the observations. Due to the high fraction of HOMs in the modeled particles, the oxygen-to-carbon (O  :  C) atomic ratio of the SOA is nearly 1. This unusually high O  :  C and the discrepancy between the modeled and observed particle growth might be explained by the fact that the model does not consider any particle-phase reactions involving semi-volatile organic compounds with relatively low O  :  C. In the model simulations where condensation of low-volatility and extremely low-volatility HOMs explain most of the SOA formation, the phase state of the SOA (assumed either liquid or amorphous solid) has an insignificant impact on the evolution of the particle number size distributions. However, the modeled particle growth rates are sensitive to the method used to estimate the vapor pressures of the HOMs. Future studies should evaluate how heterogeneous reactions involving semi-volatility HOMs and other less-oxidized organic compounds can influence the SOA composition- and size-dependent particle growth.
Regional Simulation of Indian summer Monsoon Intraseasonal Oscillations at Gray Zone Resolution
Authors: Chen Xingchao , Pauluis Olivier M. , Zhang Fuqing
Published: July 2017

Abstract. Simulations of the Indian summer monsoon by cloud-permitting WRF model at gray zone resolution are described in this study, with a particular emphasis on the model ability to capture the Monsoon Intraseasonal Oscillations (MISO). Five boreal summers are simulated from 2007 to 2011 using the ERA-Interim reanalysis as lateral boundary forcing data. Our experimental set-up relies on a high horizontal resolution of 9 km to capture deep convection without the use of a cumulus parameterization. When compared to simulations with coarser grid spacing (27-km) and using the cumulus scheme, our approach results in a reduction of the biases in mean precipitation and in more realistic reproduction of the low frequency variability associated with MISO. Results show that the model at gray zone resolution captures the fundamental features of the summer monsoon. The spatial distributions and temporal evolutions of monsoon rainfall in WRF simulations are verified qualitatively well against observations from the Tropical Rainfall Measurement Mission (TRMM), with regional maxima located over West Ghats, central India, Himalaya foothills and the west coast of Myanmar. The onset, breaks and withdrawal of the summer monsoon in each year are also realistically captured by the model. MISO phase composites of monsoon rainfall, low-level wind and precipitable water anomalies in the simulations are compared qualitatively with the observations. Both the simulations and observations show a northeastward propagation of the MISO, with the intensification and weakening of Somali Jet over the Arabian Sea during the active and break phases of the Indian summer monsoon.
Radiative effects of ozone waves on the Northern Hemisphere polar vortex and its modulation by the QBO
Authors: Silverman Vered , Harnik Nili , Matthes Katja , Lubis Sandro W. , Wahl Sebastian
Published: July 2017

Abstract. The radiative effects induced by including interactive ozone, in particular, the zonally asymmetric part of the ozone field, have been shown to significantly change the temperature of the NH winter polar cap, and correspondingly the strength of the polar vortex. However, there is still a debate on whether this effect is important enough for climate simulations to justify the numerical cost of including chemistry calculations in long climate integrations. In this paper we aim to understand the physical processes by which the radiative effects of including interactive ozone, and in particular the radiative effects of zonally asymmetric ozone anomalies (ozone waves), amplify to significantly influence the winter polar vortex. Using the NCAR Whole Atmosphere Community Climate Model in the natural configuration, in which ozone depleting substances and green house gases are fixed at 1960's levels, we find a significant effect on the winter polar vortex only when examining the QBO phases separately. Specifically, the seasonal evolution of the midlatitude signal of the QBO – the Holton-Tan effect – is delayed by one to two months when radiative ozone wave effects are removed. Since the ozone waves affect the vortex in an opposite manner during the different QBO phases, when we examine the full time series, besides an early fall direct radiative effect, we find no statistically significant winter effect. We start by quantifying the direct radiative effect of ozone waves on temperature waves, and consequently on the zonal mean zonal wind, and show that this effect is most significant during early fall. We then show how the direct radiative effect amplifies by modifying the evolution of individual upward planetary wave pulses and their induced mean flow deceleration during early winter when stratospheric westerlies just form and waves start propagating up to the stratosphere. The resulting mean-flow differences accumulate during fall and early winter, after which they get amplified through wave-mean flow feedbacks. We find that the evolution of these early-winter upward planetary wave pulses and their induced stratospheric zonal mean flow deceleration are qualitatively different between QBO phases, providing a new mechanistic view of the extratropical QBO signal (the Holton-Tan effect). We further show how these differences result in an opposite effect of the radiative ozone wave perturbations on the mean flow deceleration for east and west QBO phases.
The fate of a southwest Pacific bloom: gauging the impact of submesoscale vs. mesoscale circulation on biological gradients in the subtropics
Authors: de Verneil Alain , Rousselet Louise , Doglioli Andrea M. , Petrenko Anne A. , Moutin Thierry
Published: July 2017

Abstract. The temporal evolution of a surface chlorophyll a bloom sampled in the western tropical South Pacific during the 2015 Oligotrophy to UlTra-oligotrophy PACific Experiment (OUTPACE) cruise is examined. This region is usually characterized by largely oligotrophic conditions, i.e. low concentrations of inorganic nutrients at the surface and deep chlorophyll a maxima. Therefore, the presence of a surface bloom represents a significant perturbation from the mean ecological state. Combining in situ and remote sensing datasets, we characterize both the bloom's biogeochemical properties and the physical circulation responsible for structuring it. Biogeochemical observations of the bloom document the bloom itself, a subsequent decrease of surface chlorophyll a, significantly reduced surface phosphate concentrations relative to subtropical gyre water farther east, and a physical decoupling of chlorophyll a from a deep nitracline. All these characteristics are consistent with nitrogen fixation occurring within the bloom. The physical data suggest surface mesoscale circulation is the primary mechanism driving the bloom's advection, whereas balanced motions expected at submesoscales provide little contribution to observed flow. Together, the data provide a narrative where subtropical gyre water can produce significant chlorophyll a concentrations at the surface that is stirred, deformed, and transported great distances by the mesoscale circulation. In this case, for the time period considered, the transport is in an easterly direction, contrary to both the large-scale and mean mesoscale flow. As a result, future studies concerning surface production in the region need to take into account the role complex mesoscale structures play in redistributing subtropical gyre water.