bluuebunny/crossref_metadata_2025 huggingface dataset:
The economic burden of prostate cancer. A systematic literature overview of registry-based studies
Authors: Rencz Fanni , Brodszky Valentin , Varga Péter , Gajdácsi József , Nyirády Péter , Gulácsi László
Published: March 2014

Introduction: Prostate cancer, the most frequent malignant disease in males in Europe, accounts for a great proportion of health expenditures. Aim: A systematic review of registry-based studies about the cost-of-illness and related factors of prostate cancer, published in the last 10 years. Method: A MEDLINE-based literature review was carried out between January 1, 2003 and October 1, 2013. Results: Fifteen peer-reviewed articles met the criteria of interest. In developed countries radiotherapy, surgical treatment and hormone therapy account for the greatest per capita costs. In Europe early stage tumours (4–7000 €, 2006), while in the USA metastatic prostate cancer (19 900–25 500 $, 2004) was associated with highest per capita expenses. In Europe the greatest costs incurred within the initial treatment (6400 €/6 months, 2008), while in the USA within the end-of-life care (depending on age: 62 200–93 400 $, 2010). Conclusions: Despite public health importance of prostate cancer, the cost-of-illness literature from Europe is relatively small. Orv. Hetil., 2014, 155(13), 509–520.
Ações voltadas para o tabagismo: análise de sua implementação na Atenção Primária à Saúde
Authors: Portes Leonardo Henriques , Campos Estela Marcia Saraiva , Teixeira Maria Teresa Bustamante , Caetano Rosângela , Ribeiro Luiz Cláudio
Published: March 2014

A pesquisa analisou a situação de implementação das políticas voltadas para o controle do tabagismo em município de médio porte através da verificação das ações preconizadas pelo Programa Nacional de Controle do Tabagismo (PNCT) desenvolvidas em Unidades de Atenção Primária à Saúde (UAPS). Foram entrevistados o coordenador municipal do PNCT e profissionais das 44 UAPS de Juiz de Fora (MG), entre maio e julho de 2011. Observou-se que as ações de tratamento e de promoção da saúde vêm sendo executadas, tendo destaque a capacitação de profissionais para implementação do tratamento nas UAPS. Em 40,9% das UAPS, há a oferta do tratamento para o fumante e, em 88,6%, as ações concentram-se em atividades de salas de espera, grupos e consultas individuais. Provavelmente não se restringem ao município a inadequada estruturação das unidades, a alta rotatividade de trabalhadores, o grau variado de comprometimento dos profissionais em implementarem o atendimento e a carência de mecanismos que lhes permitam iniciar e dar continuidade aos atendimentos em meio às demais atribuições que possuem. O grande desafio para o controle do tabagismo é realizar as ações intersetoriais e na atenção primária. Os resultados podem servir para a formulação de ações estratégicas de saúde em outras localidades do país.
Perfil dos gerentes de Atenção Primária à Saúde de municípios de pequeno porte do norte do Paraná, Brasil
Authors: Ohira Regina Hitomi Fukuda , Cordoni Junior Luiz , Nunes Elisabete de Fátima Polo de Almeida
Published: March 2014

O presente artigo teve por objetivo caracterizar o perfil dos gerentes da atenção primária à saúde (APS) em 49 municípios de pequeno porte (até 20.000 habitantes) do norte do Paraná. Trata-se de um estudo de abordagem quantitativa no qual foi aplicado questionário semiestruturado para 90 gerentes. Para análise estatística, utilizou-se o programa EpiInfo 3.5.1. O resultado do perfil dos gerentes apontou para 91,1% do sexo feminino, 83,3% enfermeiros, 50,0% com idade predominante entre 21 e 30 anos e 75,6% com especialização. Quanto ao ingresso no emprego, em 70,0% foi por meio de concurso público/teste seletivo. Em relação à atuação profissional, 40,0% atuavam há mais de 5 anos, 43,4% estavam inseridos na APS há mais de 5 anos e 32,2% na atual unidade básica de saúde há menos de 1 ano. Sobre treinamento específico para desempenho da função gerencial, 71,1% não fizeram nenhum curso, somente 23,3% relataram ter feito curso de gestão, mas 37,7% já atuaram como gerentes. Conclui-se que falta profissionalização, capacitação e institucionalização do cargo para o desempenho desta função.
Seguridad alimentaria, crecimiento y niveles de vitamina A, hemoglobina y zinc en niños preescolares del nordeste de Brasil
Authors: Pedraza Dixis Figueroa , Queiroz Daiane de , Paiva Adriana de Azevedo , Cunha Maria Auxiliadora Lins da , Lima Zilka Nanes
Published: March 2014

El presente estudio buscó analizar la asociación entre la (in)seguridad alimentaria y el estado nutricional de niños preescolares asistidos en jardines infantiles. La seguridad alimentaria fue evaluada a través de la Escala Brasileña de Inseguridad Alimentaria (EBIA). El estado nutricional se evaluó a través del peso/edad, talla/edad, hemoglobina, retinol sérico y zinc sérico. Fueron encontradas prevalencias de déficit de estatura (6,2%), déficit de peso/edad (2,1%), deficiencia de vitamina A (24,4%), anemia (15,5%) y deficiencia de zinc (15,0%). La inseguridad alimentaria familiar fue caracterizada en 64,2% de las familias predominando la forma leve (32,6%). El estudio concluye que la inseguridad alimentaria estimada por la EBIA no se asoció a los Escore-z de crecimiento ni a las concentraciones de retinol sérico, hemoglobina y zinc sérico.
Efeitos do exercicio agudo sobre biomarcadores sericos de ratos diabeticos
Authors: Milioni Fabio , Antunes Barbara de Moura Mello , Teixeira-Arroyo Claudia , Loures Joao Paulo , Scariot Pedro Paulo Menezes , Santos Paulo Cezar Rocha dos , Silva Maria Souza , Luciano Eliete
Published: March 2014

INTRODUÇÃO: As respostas ao exercício agudo dos biomarcadores, como a fosfatase alcalina (FA) e a creatina quinase (CK) séricas têm sido pouco investigadas em ratos diabéticos. OBJETIVOS: Verificar os efeitos do exercício físico aeróbio agudo sobre as concentrações de CK e FA, bem como, avaliar o estado hídrico em ratos diabéticos experimentais. MATERIAIS E MÉTODOS Foram utilizados ratos Wistar machos, adultos jovens, distribuídos em dois grupos: diabéticos (DA) e controles (CA). O diabetes foi induzido por meio da administração de aloxana monoidratado Sigma(r) (32 mg/kg de peso corporal). Duas semanas após confirmação do diabetes, ambos os grupos foram submetidos a uma sessão aguda de natação por 30 min, com carga aeróbia (4,5 % do peso corporal). Foram avaliados: glicose, hematócrito, CK, FA, albumina e a cinética de lactato durante o exercício por meio de coletas 25 µL de sangue da cauda dos animais, nos minutos 0, 10, 20 e 30 de exercício. RESULTADOS: ANOVA de dois fatores para medidas repetidas e o teste post hoc de Tukey apontaram diminuição significativa dos valores de glicemia após o exercício para o grupo DA, aumento significativo de CK pós-exercício para o grupo DA, aumento significativo de hematócrito para ambos os grupos após exercício e manutenção da FA após exercício para o grupo DA. CONCLUSÃO: O exercício agudo aeróbio foi eficiente no controle dos níveis glicêmicos de ratos diabéticos. Entretanto, deve ser aplicado com cautela, pois induziu altos valores de CK, sugerindo possíveis lesões teciduais.
Perfil funcional de atletas de basquetebol com traumatismo da medula espinal de acordo com a cif
Authors: Frez Andersom Ricardo , Souza Andrezza Thimoteo de , Quartiero Cintia Raquel Bim , Ruaro Joao Afonso
Published: March 2014

INTRODUÇÃO: A Classificação Internacional de Funcionalidade, Incapacidade e Saúde considera os múltiplos aspectos da funcionalidade; acredita-se que essa ferramenta possa contribuir para avaliar atletas com incapacidades. OBJETIVO: Determinar o perfil funcional de jogadores de basquete em cadeira de rodas de acordo com o core set da Classificação Internacional de Funcionalidade, Incapacidade e Saúde para indivíduos com traumatismo da medula espinal (TME). MÉTODOS: Foi realizado um estudo transversal com 12 atletas com TME, jogadores de basquete em cadeira de rodas. A funcionalidade foi classificada pela versão abreviada do core set para indivíduos com TME crônico, que contém 33 categorias. Estas foram consideradas válidas se apresentassem ao menos 20% dos atletas com algum grau de incapacidade (de acordo com os qualificadores da CIF). RESULTADOS: Das 33 categorias avaliadas, 31 (93,9%) foram representativas para a amostra. Apenas as categorias b710 e e340 não foram consideradas válidas. Em sete categorias todos os atletas apresentaram algum grau de comprometimento (s120, d455, d465, d530, e115, e150 e e580). Porém, os maiores comprometimentos foram observados nas categorias: s120, d455, d465, e115 e e120. CONCLUSÃO: Os atletas apresentaram diferentes comprometimentos funcionais, entretanto tais limitações não os impedem de praticar a modalidade esportiva.
Managed livestock grazing is compatible with the maintenance of plant diversity in semidesert grasslands
Authors: Fensham R. J. , Silcock J. L. , Firn J.
Published: March 2014

Even when no baseline data are available, the impacts of 150 years of livestock grazing on natural grasslands can be assessed using a combined approach of grazing manipulation and regional‐scale assessment of the flora. Here, we demonstrate the efficacy of this method across 18 sites in the semidesert Mitchell grasslands of northeastern Australia. Fifteen‐year‐old exclosures (ungrazed and macropod grazed) revealed that the dominant perennial grasses in the genus Astrebla do not respond negatively to grazing disturbance typical of commercial pastoralism. Neutral, positive, intermediate, and negative responses to grazing disturbance were recorded amongst plant species with no single life‐form group associated with any response type. Only one exotic species, Cenchrus ciliaris, was recorded at low frequency. The strongest negative response was from a native annual grass, Chionachne hubbardiana, an example of a species that is highly sensitive to grazing disturbance. Herbarium records revealed only scant evidence that species with a negative response to grazing have declined through the period of commercial pastoralism. A regional analysis identified 14 from a total of 433 plant species in the regional flora that may be rare and potentially threatened by grazing disturbance. However, a targeted survey precluded grazing as a cause of decline for seven of these based on low palatability and positive responses to grazing and other disturbance. Our findings suggest that livestock grazing of semidesert grasslands with a short evolutionary history of ungulate grazing has altered plant composition, but has not caused declines in the dominant perennial grasses or in species richness as predicted by the preceding literature. The biggest impact of commercial pastoralism is the spread of woody leguminous trees that can transform grassland to thorny shrubland. The conservation of plant biodiversity is largely compatible with commercial pastoralism provided these woody weeds are controlled, but reserves strategically positioned within water remote areas are necessary to protect grazing‐sensitive species. This study demonstrates that a combination of experimental studies and regional surveys can be used to understand anthropogenic impacts on natural ecosystems where reference habitat is not available.
Inter-Seasonal Variations of Surface Temperature in the Urbanized Environment of Delhi Using Landsat Thermal Data
Authors: Singh Ram , Grover Aakriti , Zhan Jinyan
Published: March 2014

Complex land use/cover patterns in urban areas significantly influence their prevailing surface temperature conditions. As a result of differential cooling and heating of various land use/cover, large temperature ranges are associated with bare land, built-up land, etc. and low ranges are found in vegetation cover and water bodies. Extremely high and low temperature conditions in built-up land have direct and negative impacts on health conditions, and therefore are imperative to study. Thus, an attempt has been made in this research to analyze seasonal variations in surface temperature in city of Delhi. Landsat Thematic Mapper (TM) 5 satellite images for the four seasons, viz., 16 January (winter), 5 March (spring), 8 May (summer) and 29 September (autumn) 2011 have been used to interpret the distribution and changes in surface temperature. A total of 80 samples from all land use/cover categories were taken to generalize the patterns along with north-south and west-east profiles. The extracted surface temperature patterns reflect the spatial and temporal dynamics of temperature over different land use/cover. The north-south and west-east gradient of temperature demonstrates that the core of Delhi has a much lower temperature and weak urban heat island (UHI) phenomenon.
Biofuels from the Fresh Water Microalgae Chlorella vulgaris (FWM-CV) for Diesel Engines
Authors: Al-lwayzy Saddam , Yusaf Talal , Al-Juboori Raed
Published: March 2014

This work aims to investigate biofuels for diesel engines produced on a lab-scale from the fresh water microalgae Chlorella vulgaris (FWM-CV). The impact of growing conditions on the properties of biodiesel produced from FWM-CV was evaluated. The properties of FWM-CV biodiesel were found to be within the ASTM standards for biodiesel. Due to the limited amount of biodiesel produced on the lab-scale, the biomass of dry cells of FWM-CV was used to yield emulsified water fuel. The preparation of emulsion fuel with and without FWM-CV cells was conducted using ultrasound to overcome the problems of large size microalgae colonies and to form homogenized emulsions. The emulsified water fuels, prepared using ultrasound, were found to be stable and the size of FWM-CV colonies were effectively reduced to pass through the engine nozzle safely. Engine tests at 3670 rpm were conducted using three fuels: cottonseed biodiesel CS-B100, emulsified cottonseed biodiesel water fuel, water and emulsifier (CS-E20) and emulsified water containing FWM-CV cells CS-ME20. The results showed that the brake specific fuel consumption (BSFC) was increased by about 41% when the engine was fueled with emulsified water fuels compared to CS-B100. The engine power, exhaust gas temperature, NOx and CO2 were significantly lower than that produced by CS-B100. The CS-ME20 produced higher power than CS-E20 due to the heating value improvement as a result of adding FWM-CV cells to the fuel.
Structure-Activity Association of Flavonoids in Lung Diseases
Authors: Lago João , Toledo-Arruda Alessandra , Mernak Márcia , Barrosa Kaidu , Martins Milton , Tibério Iolanda , Prado Carla
Published: March 2014

Flavonoids are polyphenolic compounds classified into flavonols, flavones, flavanones, isoflavones, catechins, anthocyanidins, and chalcones according to their chemical structures. They are abundantly found in Nature and over 8,000 flavonoids have from different sources, mainly plant materials, have been described. Recently reports have shown the valuable effects of flavonoids as antiviral, anti-allergic, antiplatelet, antitumor, antioxidant, and anti-inflammatory agents and interest in these compounds has been increasing since they can be helpful to human health. Several mechanisms of action are involved in the biological properties of flavonoids such as free radical scavenging, transition metal ion chelation, activation of survival genes and signaling pathways, regulation of mitochondrial function and modulation of inflammatory responses. The anti-inflammatory effects of flavonoids have been described in a number of studies in the literature, but not frequently associated to respiratory disease. Thus, this review aims to discuss the effects of different flavonoids in the control of lung inflammation in some disorders such as asthma, lung emphysema and acute respiratory distress syndrome and the possible mechanisms of action, as well as establish some structure-activity relationships between this biological potential and chemical profile of these compounds.
Antiadhesive Properties of Arabinogalactan Protein from Ribes nigrum Seeds against Bacterial Adhesion of Helicobacter pylori
Authors: Messing Jutta , Niehues Michael , Shevtsova Anna , Borén Thomas , Hensel Andreas
Published: March 2014

Fruit extracts from black currants (Ribes nigrum L.) are traditionally used for treatment of gastritis based on seed polysaccharides that inhibit the adhesion of Helicobacter pylori to stomach cells. For detailed investigations an arabinogalactan protein (F2) was isolated from seeds and characterized concerning molecular weight, carbohydrate, amino acid composition, linkage, configuration and reaction with β-glucosyl Yariv. Functional testing of F2 was performed by semiquantitative in situ adhesion assay on sections of human gastric mucosa and by quantitative in vitro adhesion assay with FITC-labled H. pylori strain J99 and human stomach AGS cells. Bacterial adhesins affected were identified by overlay assay with immobilized ligands. 125I-radiolabeled F2 served for binding studies to H. pylori and interaction experiments with BabA and SabA. F2 had no cytotoxic effects against H. pylori and AGS cells; but inhibited bacterial binding to human gastric cells. F2 inhibited the binding of BabA and fibronectin-binding adhesin to its specific ligands. Radiolabeled F2 bound non-specifically to different strains of H. pylori; and to BabA deficient mutant. F2 did not lead to subsequent feedback regulation or increased expression of adhesins or virulence factors. From these data the non-specific interactions between F2 and the H. pylori lead to moderate antiadhesive effects.
Antischistosomal Activity of the Terpene Nerolidol
Authors: Silva Marcos , Oliveira George , De Carvalho Rusbene , De Sousa Damião , Freitas Rivelilson , Pinto Pedro , Moraes Josué
Published: March 2014

Schistosomiasis is a neglected tropical disease that affects hundreds of millions of people worldwide. Since the treatment of this disease currently relies on a single drug, praziquantel, new and safe schistosomicidal agents are urgently required. Nerolidol, a sesquiterpene present in the essential oils of several plants, is found in many foods and was approved by the U.S. Food and Drug Administration. In this study we analysed the in vitro antiparasitic effect of nerolidol on Schistosoma mansoni adult worms. Nerolidol at concentrations of 31.2 and 62.5 μM reduced the worm motor activity and caused the death of all male and female schistosomes, respectively. In addition, confocal laser scanning microscopy revealed morphological alterations on the tegument of worms such as disintegration, sloughing and erosion of the surface, and a correlation between viability and tegumental damage was observed. In conclusion, nerolidol may be a promising lead compound for the development of antischistosomal natural agents.
Platinum(II) Oxalato Complexes Involving Adenosine-Based N-Donor Ligands: Synthesis, Characterization and Cytotoxicity Evaluation
Authors: Štarha Pavel , Popa Igor , Trávníček Zdeněk
Published: March 2014

A one-step synthetic procedure using the reaction of potassium bis(oxalato)platinate(II) with the corresponding N6-benzyladenosine derivative (nL) provided the [Pt(ox)(nL)2]∙1.5H2O oxalato (ox) complexes 1–5, involving the nL molecules as monodentate coordinated N-donor ligands. The complexes were thoroughly characterized by elemental analysis, multinuclear (1H, 13C, 15N, 195Pt) and two dimensional NMR, infrared and Raman spectroscopy, and mass spectrometry, proving their composition and purity as well as coordination of nL through the N7 atom of the purine moiety. Geometry of [Pt(ox)(4FL)2] (5) was optimized at the B3LYP/LANLTZ/6-311G** level of theory. The complexes were screened for their in vitro cytotoxicity against two human cancer cell lines (HOS osteosarcoma and MCF7 breast adenocarcinoma), but they did not show any effect up to the concentration of 50.0 µM (compounds 1, 2) or 20.0 µM (compounds 3–5).
Comparison of Nutritional Quality of the Vegan, Vegetarian, Semi-Vegetarian, Pesco-Vegetarian and Omnivorous Diet
Authors: Clarys Peter , Deliens Tom , Huybrechts Inge , Deriemaeker Peter , Vanaelst Barbara , De Keyzer Willem , Hebbelinck Marcel , Mullie Patrick
Published: March 2014

The number of studies comparing nutritional quality of restrictive diets is limited. Data on vegan subjects are especially lacking. It was the aim of the present study to compare the quality and the contributing components of vegan, vegetarian, semi-vegetarian, pesco-vegetarian and omnivorous diets. Dietary intake was estimated using a cross-sectional online survey with a 52-items food frequency questionnaire (FFQ). Healthy Eating Index 2010 (HEI-2010) and the Mediterranean Diet Score (MDS) were calculated as indicators for diet quality. After analysis of the diet questionnaire and the FFQ, 1475 participants were classified as vegans (n = 104), vegetarians (n = 573), semi-vegetarians (n = 498), pesco-vegetarians (n = 145), and omnivores (n = 155). The most restricted diet, i.e., the vegan diet, had the lowest total energy intake, better fat intake profile, lowest protein and highest dietary fiber intake in contrast to the omnivorous diet. Calcium intake was lowest for the vegans and below national dietary recommendations. The vegan diet received the highest index values and the omnivorous the lowest for HEI-2010 and MDS. Typical aspects of a vegan diet (high fruit and vegetable intake, low sodium intake, and low intake of saturated fat) contributed substantially to the total score, independent of the indexing system used. The score for the more prudent diets (vegetarians, semi-vegetarians and pesco-vegetarians) differed as a function of the used indexing system but they were mostly better in terms of nutrient quality than the omnivores.
Cloud-Learning
Authors: Corona Felice , Cozzarelli Carla , Di Tore Pio Alfredo
Published: March 2014

Cloud computing is a metaphor that suggests the perspective of being able to be connected anywhere, evoking on the one hand the complex technological infrastructure and suggesting on the other as the physical location of users and resources loses relevance, creating endless connections and endless ways to interact in the network. The aim of this work is to investigate the educational potential arising from the creation of networks that encourage learning through web 2.0. The development of learning networks that generate interconnections between different users can transform schools and universities in communities of practice, characterized by an open and multidimensional learning environment. Cloud learning combines the ability to tap into resources distributed information in context, turning a diverse set of applications on mobile digital devices in a personal learning tool. In particular, the cloud learning appears to offer an effective tool for the development of key competences identified by the European framework.
A Calibration Method for High Precision Vision Measurement System
Authors: Zhao Ping , Zhao Wen Zhen , Duan Zhen Yun
Published: March 2014

In order to realize precision measurement for the computer vision measurement system, a system comprehensive calibration method based on straight line imaging characteristics is proposed. The method uses parallel straight line edges of general 00 level gauge groups to comprehensively calibrate the measurement system. It establishes the calibration function that describes the corresponding relationship between the imaging point location and space point position, and then determines the coefficient of the calibration function according to the linear characteristic of gauge block measurement surface edges imaging. This method is simple to operate and is easy to realize and has good versatility. It can comprehensively correct all kinds of system errors such as the optical distortion, the perspective error, the sensor position error and location error of edge detection algorithm. Repeated measurement experiments for the gauges show that the precision of the measurement system can reach by means of this calibration method.
The Measurement System of Partial Discharge under Impulse Voltage
Authors: Yang Jing Gang , Jia Yong Yong , Zhou Zhi Cheng , Li Jun Hao
Published: March 2014

Partial discharge (PD) is the important detection parameter for power equipment, with the development of high voltage test technology, PD detection under impulse voltage is more attention. In order to detect the partial discharge signal under the impulse voltage, this paper designs a high-frequency current sensor and broadband measurement impedance. A set of partial discharge measurement system under impulse voltage is built up. The frequency characteristics of current sensor and measurement impedance are detected. In order to test the measurement system, the PD signals of a needle defect under impulse voltage is detected, the test results show that the PD measurement system can detect the PD signals effectively.
An Effective Strategy on Anomaly Monitoring of Oil Quality in Heavy-Duty Diesel Engine
Authors: Zhao Yong Dong , Zhao Wen Zhu , Wang Xian Cheng , He Mu
Published: March 2014

When the engine is working, the oil may be mixed with diesel once there isnt any burning diesel flowing into the crank case or there is a diesel leak in the joint of the oil atomizer and the high-pressure oil pipe. Once it happens, the oil degradation will appear, which can cause serious accidents such as drawing cylinder and tile burning when it appears to be severe. At the present moment, the quality of oil in the real vehicle cant be monitored. In this paper, a model used to monitor the quality of the oil was built by means of matching experiment, which took advantage of the neural network. Through the test of the real vehicle, it came to a conclusion that the mode could monitor the viscosity of the oil in real time and accurately calculate the volume fraction of diesel that is mixed into the oil, which could provide an effective means for the replacement of oil.
Auto-Detecting System for Circulating Tumor Cells Based on LabView
Authors: Liu Kan , Zhang Jun Zhe , You Hao
Published: March 2014

This paper is aimed to introduce an automatic detecting system for circulating tumor cells (CTCs) based on LabView. This system mainly employs multi-way valve to control the whole experimental process, with separating and enriching the overexpressed EpCAM cells in blood, then using immunohistochemical stain for cells. Cameras are used to collect multiple fluorescence images of staining cells and LabView analyzes those cell image. The characterizations of images are used to determine whether the cells are CTCs and the number of CTCs, following the analysis of associated biochemical characteristics.
Damaged Red Dates Detection Based PCNN and GVF Snake Model
Authors: Yao Na , Wu Gang
Published: March 2014

According to the feature of moldy red dates, Pulse Coupled Neural Networks and Snake model are presented to detect damaged region of red dates so that the bad ones can be picked. Firstly, Pulse Coupled Neural Networks is used to segment red date images. Segmented images are binary images, in which wrinkled and decayed regions separate from other well regions. Then edge is detected using Pulse Coupled Neural Networks and this edge will be defined as initial contour of GVF Snake model. Finally, GVF Snake model is used to detect the decayed regions. Experiments show that this proposed method can extract decayed regions of red dates efficiently.
Auto Gearbox Bearing Fault Diagnosis Method Based on Winger-SVD
Authors: Yang Shui Yong , Qin Hong Mao
Published: March 2014

A new auto gearbox bearing fault diagnosis method is put forward based on Winger distribution and SVD of vibration signal. Firstly, bearing vibration signal was analyzed by Winger distribution; then, signature sequence was obtained by SVD, which can reflect the gearbox fault condition; finally, singular values of the vibration signal Winger spectrums were selected as feature vectors to diagnose fault based SVM. Experiments show that this method can extract fault feature effectively.
Digital Test System Design and Realization Based on DDR3
Authors: Yue Tao
Published: March 2014

Based on the current international trends in technology of the memory controller, a DDR3 memory controller design plan, the program will be the function of the storage controller further divided into the transport layer and the physical layer, followed by the main module functions and the implementation details are described in detail. The controller can efficiently complete the memory request scheduling, increase the memory bus utilization, thereby improving the memory access bandwidth and reduces memory access latency to provide some reference in the future other support for DDR3 memory digital system design. The final completion of DDR3-based digital test system, the input parallel digital signal judgment, the judgment of data stored in the DDR3 memory and the destination address data read out the analysis.
Determination of Microelements in Balanophora involucrate Hook. f. by ICP-AES
Authors: Han Hong Bo , Diao Yi , Wei Hui Ping , Wan Shu Quan , Zhang Da Fen
Published: March 2014

In this paper, the contents of these elements including Cu, Fe, Mn, Zn, Al, Cd, Pb, Ti and As were determined by ICP-AES technique, which elements originated from B. involucrate from different places. Detection limits ranged 0.0029 ug/ml-1 and 0.079 ug/ml-1, the relative standard deviations for all these elements were lower than 2%, and recovery rates ranged 94.8% and 105.8%. The results showed that there were rich elements in B. involucrate from different places; contents of Fe and Al were highest; contents of Mn, Zn, Cu and Ti were moderately high, and contents of As, Cd and Pb were lowest. Futhermore, Cu, Fe, Mn, Zn were essential to peoples health, and Al, Cd, As, Pb and Ti had potentially physiologically toxic. Finally, concentrations of elements within B. involucrate from different places were different, which may have some relations with the environment where B.involucrate grew. As a result, the determining method which elements of B. involucrate. are determined by ICP-AES is rapid, accurate and convenient, and wild B. involucrate may contain toxic elements because of pollutional soil and environment, so B.involucrate cultivated artificially can effectively reduce harmful elements.
ICP-AES Determination of Elements in Elsholtzia rugulosa Hemsl. after Microwave Assisted Digestion
Authors: Han Hong Bo , Diao Yi , Wei Hui Ping , Wan Shu Quan , Zhang Da Fen
Published: March 2014

In this paper, the contents of these elements including Cu, Fe, Mn, Zn, Al, Cd, Pb, Ti and As were determined by ICP-AES technique, which elements originated from E. rugulosa from different places. Detection limits ranged 0.0029 ug/ml-1 and 0.079 ug/ml-1, the relative standard deviations for all these elements were lower than 2%, and recovery rates ranged 93% and 105.8%. The results showed that there were rich elements in E. rugulosa from different places; contents of Fe and Al were highest; contents of Mn, Zn and Ti were moderately high; and contents of Cu, As, Cd and Pb were lowest. Finally, concentrations of elements within E. rugulosa from different places were different, which may have some relations with the environment where it grew. As a result, the determining method which elements of E. Rugulosa are determined by ICP-AES is rapid, accurate and convenient.
Engine HIL Signal Imitation Design Based on LabVIEW
Authors: Zhao Yan Qiu , Chen Yong
Published: March 2014

In the development and test of engine ECU, HIL is used widely .ECU needs a lot of drive signals in order to ensure HIL can work normally. Mixing programme based virtual instrument technology and Matlab / Simulink model realized engine signal simulation to provide drive signals for ECU. Meanwhile, NI PXI boards which output analog signal were used as hardware devices in the paper and LabVIEW software were adopted to drive boards and process analog signal, achieving accurate simulating signal on engine excitation signal. The results for test show that the system is able to simulate exciting signal for the engine ECU accurately, provides a low-cost, low pollution, high efficiency way to test and develop engine and its ECU and increase security and reliability of test system.
Second Derivative X-Ray Diffraction Fingerprint of Tibetan Medicine Snow Lotus Herb Based on the Five-Point-Formula Method
Authors: Zhang Wei Wei , Yang Wei Feng , Hu Cheng Xi , Shi Yu Hui , Zhu Jian Rui
Published: March 2014

A MATLAB program was written with the Five-Point-Formula method for obtaining the second derivative (SD) XRD pattern, using which the SD fingerprints of SiO2 and Tibetan medicine Snow Lotus Herb were gotten respectively. The results show that the problem of the diffuse XRD plant-based patterns analysis can be solved effectively, and it also possesses the remarkable zoom function, which is worth being spread.
Research on Information Fusion of Two New DLL Discriminator Algorithms
Authors: Cao Jian , Yan Cong
Published: March 2014

After information fusion model has been established, the feature-level fusion algorithm based on fuzzy neural network and expert system is proposed, in which the expert system has been embedded into fuzzy neural network so that it could choose the membership function and adjust the network structure. At the same time, for code tracking loop, two new code phase discriminator algorithms based on DLL structure is proposed. Evidence theory has been applied to achieve the decision-making level fusion. The performances of the two algorithms were studied by using theoretical method and experimental method with analog IF signal data and actual IF signal data respectively. Then, the results of feature-level fusion have been taken as the evidences to construct the frame of discernment. The research results show that the process of information fusion has abilities of adapting and self-learning.
Optimal Methods of Traffic Control Systems for Pedestrians Crossing Signalized Intersection under Urban Overpasses
Authors: Liu Bo Hang , Liu Xiao Xia , Zhang Wen Sheng
Published: March 2014

The vehicle delay is a key problem in intersection signal control system. Because there is enough security space for pedestrians under urban overpasses, the traffic control approach of pedestrians crossing signalized intersection may be further improved. To the above problems, this paper shows two-phase control method in pedestrians crossing signalized intersection under urban overpasses. According to this method, the vehicle delay affected by pedestrians crossing the signalized intersection is studied. Meanwhile, the variation trend of vehicle delay under different road widths are also analyzed. At last, an overpass is conducted for example analysis, and the result shows that this approach is practical and feasible for the special case of pedestrians crossing signal control intersection under urban overpasses, it can effectively reduce the pedestrian and vehicle delay.
Effectiveness Evaluation of Air Traffic Control System
Authors: Xia Zheng Hong , Pan Wei Jun
Published: March 2014

The system effectiveness is the key operational parameters of air traffic control system (ATCS). Based on the aspects of external environment, inner static functional and dynamic running effectiveness, the concept of ATCS effectiveness was proposed in this paper. And the evaluation model and corresponding evaluation approaches which combined with improved analytic hierarchy process (I-AHP) and Delphi Method (DM) were adopted. According to the example analysis, evaluating results show good conformity with specialists judgment, which verify the rationality of evaluation model and algorithms.
Adjustable Multi-Light Wireless Remote Control System Designed LED Light
Authors: He Hong , Zhang Feng Ling , Zhang Zhi Hong
Published: March 2014

With the development of LED technology, the actual demand of the people for the smart home lighting, this paper designed a multiple lamps for indoor wireless remote control dimmable LED lighting systems. LED driver is using two levels of drive structure, and driver power supply adopts double-road current output, and the size of the output current of each constant current source is flexible to adjust by remote control. Wireless remote control part control multiple lamps by using 4 * 4 keyboard, which realizes intelligent management of LED interior lighting in the smart home.
The Study on 3D Incompatible Element in Flexible Multibody System Dynamics
Authors: Liu Su Bing , Cao Da Zhi , Zhao Zhi Hui
Published: March 2014

In this study the performance of three-dimensional tetrahedron elements has been compared with the background of the simulation of Flexible Multibody System (FMBS). The standard linear tetrahedron element has the least number of nodes, however it has the locking problem. The standard quadratic element has shown precise result and robust performance in many applications, but its high nodes also means large computational time. The incompatible elements integrates the excellence of the linear and quadratic elements and its excellent performance in term of accuracy and time efficiency is presented.
The Study of Automobile Brake Chamber Performance Test System
Authors: Lu Yi , Zhu Qiang , Guo Bin
Published: March 2014

To solve the problem of measuring the brake chamber at present, this integrative performance test system for bake chamber was built up by using the computer control technology. It can measure these parameters: dynamic characteristic, static characteristic, sealing performance and return performance. To verify the system accuracy, a multi-parameter dynamic simulation model for the brake chamber was designed based on AMESim. It breaks through the limit which was formerly difficult to analyze the defects of the theoretical parameters for brake chamber. By the simulation models and test system, the influence of the key component parameters to the output characteristic is analyzed .The experiment results show that the integrative performance of brake chamber can be judged very well and the simulation model is accurate and reliable.
Research on Yinma Palletizing Robot Motion Feasibility Based on MATLAB-Robotics Toolbox
Authors: Xu Wei , Yuan Si Cong , Cao Ying Hui
Published: March 2014

To realize the working requirements of silver Horse Companys palletizing robot. Firstly, MATLAB software was used to establish mathematical model of the robot, and it calculated the robot workspace and generated workspace figures; it can also verify whether the predetermined grip and place points satisfy a predetermined workspace. Based on this analysis inverse kinematic of the robot, each joint angle from gripping position to place position was calculated. Polynomial interpolation method is applied to calculate the each joint trajectory; Finally, Robotics Toolbox is used to simulate the robot kinematics, and get the trajectory of the robot terminate executive body; each joint position, velocity trajectory can ensure no sudden change occurs in joint angular. In this paper, robot inverse kinematics completed robot end actuator position and posture transformation from the Cartesian space to the joint space. In order to make the joint space path planning possible, this will greatly simplify the calculation. And the joint space and Cartesian coordinate space does not exist a continuous relation, thus eliminating the singularity problem.
The Rotating Piezoelectric Motor under Low Frequency
Authors: Zhi Huang , Liu Xue Peng
Published: March 2014

Piezoelectric motor under low frequency with multi-DOF rotation is issued. The establishment of single vibration mode piezoelectric motor static characteristic and dynamic characteristics is complemented, and the structure and characteristics of low frequency drive is proposed.
Simulation Research of Cloud Models Intelligent Algorithm for Temperature Control
Authors: Zheng En Rang , Qi Zhao Yang
Published: March 2014

For implementing excellent control to nonlinear systems with long time-delay, a new intelligent control algorithm of cloud models was proposed. This algorithm presents the uncertainty reasoning of control rules based on cloud model. This model is a new method for transformation between qualitative and quantitative in the knowledge. The intelligent controller uses the theory of the fuzzy control, designing a variant dimension cloud model intelligent controller containing a one-dimension cloud model controller to eliminate steady-state error, which is used for thermal power plant boiler superheated steam temperature. It also shows that the cloud controller is simple and easy, directly perceived through the senses, and has strong robustness, better control performance, and good application.
Elevator Optimization Control System Design Based on LabVIEW 2010
Authors: Yang Yuan
Published: March 2014

In this project, Labview programming language is used to design the control system of an elevator for multiple users. Based on the use of visual programming by Labview, the project establishes a graphical soft panel, instead of traditional instrument control panel and programming interface, to run logical updates and operation maintenance easily. Labview is corresponding to the ports of many companies instruments, which makes easy to regulate and control relevant operations. The use of modular design in the project increases systems stability and avoids errors caused by using of mixed data types.
A New Method for Platform Inertial Navigation Initial Alignment Based on Rotation Mode
Authors: Liu Ming Yi , Zhang Jing Juan , Wang Xue Yun , Li Ran
Published: March 2014

A new method for rotation mode platform inertial navigation initial alignment is presented. This method is based on sinusoidal varying speed rotation mode and thus makes the factors decoupling in real time. In this way it makes the estimation process much faster and more precise compared with previous methods. The error equations of a rotating platform inertial navigation system are introduced. We give detailed description and analysis of this method. Simulation is done based on this new method. Analysis and simulation results indicate that this method makes the platform system initial alignment achieved desired results in 207.5 seconds, while the traditional methods takes 388.1 seconds. The accuracy also has highly improved. The standard deviation of gyroscope drift decreased from 0.03°/h to 0.005°/h. This provides a theoretical foundation for platform inertial navigation system rotating mode during actual experiment and application.
The Mixed Kalman and H Infinity Filter Based Robust Model Following Control Algorithm for CABG Beating Heart Surgery
Authors: Liang Fan , Wu Xing Li , Cui Shi Gang , Zhao Li
Published: March 2014

In the CABG surgery the robot dynamically cancels the relative motion between the point of interest (POI) on the beating heart and robotic instruments, such that the surgeon can operate as if the heart is stationary. However, the highly nonlinear and non-stationary nature of the beating heart motion poses difficulties for robot to follow the characteristics of the beating heart motion. Furthermore, the surgery has potential safety risk if the robot system could not track the POI properly. Therefore, in order to minimize the effects caused by the uncertainty in the heart motion model during the surgery, a robust prediction based model following control algorithm is proposed here. The adaptive Autoregressive (AR) model integrated the mixed Kalman and H infinity filter to estimate the state of the beating heart motion in the sense of minimizing minimize both RMS motion estimation error and worst case motion estimation error. In addition, the linear quadratic optimal tracking theory was used to implement the model following controller. In such way a complicated heart motion tracking problem transformed to dynamic model following problem and the robust property of the tracking control is more effective. The method is verified by two prerecorded distinguished datasets on 3D test bed robotics.
Design of a Virtual Automatic Test System of the Missile Autopilot
Authors: Cai Gui Fang
Published: March 2014

To improve the test speed and efficiency, a virtual automatic test system of missile autopilot is designed. The inbuilt computer is used as the core of the system; the modularization instrument bus standard which composed of the PXI card, the programmable instrument and other advanced test techniques is adopted. The automation test device hardware facility is used in the virtual automatic test system; the pilot mechanism fault analysis software is developed, so the faults of the missile autopilot can be located faster and more accurate. The virtual automatic test system can be used to test the current parameters, special capability and the function of the electronic parts among the missile weapon system.
Position Control of Pneumatic Clutch of AMT Trucks
Authors: Li Zhan Jiang , Li Shu , Tang Na Na , Li Jun
Published: March 2014

Logical control method is used for the position control of pneumatic clutch actuator of Automated Manual Transmission (AMT) trucks. The control input is the PWM duty ratio of 4 pneumatic valves, and the feedback signals are tracking displacement and velocity. By building the clutch model using software AMESim and then combined with MATLAB/Simulink through co-simulation, the control logic is calibrated. Finally, the well-tuned control law is used for experimental tests. Through the engagement and disengagement control under different conditions, the feasibility of the actuator control strategy is verified.
Development of PC-Based Simulation and Control Platform for a 6-DOF Robotic Arm
Authors: Wang Wen Zhe , Liu Shi Yue , Geng Qing Bo , Fei Qing
Published: March 2014

This paper developed a 6-DOF (degree of freedom) PC-Based robotic arm system. The system mainly include in software platform and servo control card, servo control card based on microcontroller STC12C5A60S2 was designed to drive the servomotor connected with each joint of robot. The software was implemented by combining MFC with OpenGL. By using the OpenGL functions, the software is able to draw and simulate the 3D kinematic scheme of the robot, it also provides 3D motion planning simulation feature. With the help of simulation in the GUI, users can visualize the manipulator motion planning. Furthermore, user also can control the real robotic arm through this software. Finally, point-to-point motion and continuous path motion are all tested in simulation and real robot control. The entire system has been successfully implemented.
Study of Control Algorithm for Wheeleg Robot Walking in Unknown Rough Terrains
Authors: Liu Xin , Wei Qing , Wang Jian , Lang Lin
Published: March 2014

This paper presents three algorithms to control the motion of wheeleg robot in unknown rough terrains. First, on the basis of the wheeleg robot, we establish the plane geometry model. By this way, we can easily derive the kinematics and dynamics equations. Based on these equations, we design the control strategy, include three algorithms: posture control, force compensation control and force control. We lay emphasis on researching force control. Then, dynamic simulation of the wheeleg robot is performed in unknown rough terrains to verify the proposed algorithms. Finally, analysing and comparing the three algorithms, and drawing the conclusion.
Aerodynamic Design Modeling and Simulation by Developing RFID Middleware
Authors: Wan Shao Song , Cao Jian , Yan Cong
Published: March 2014

In this paper, a parametric modeling and simulation method is proposed, which provides a virtual simulation test environment for photovoltaic radar. A graphical user interface (GUI) is developed using VC++6.0. With this system, the integration of CAD/CFD application is achieved. Application examples show that, this system can significantly improve the efficiency of aerodynamic design. Finally, it is proved that the control process of developing RFID middleware simulator has superior performance and expected effect.