Limpar
5.588 resultados

Acesso Aberto

Tipo do recurso

Ano de criação

Editores

Revisado por pares

Áreas

Produção nacional

Idioma

Tipo de base de dados

Livro

Project Gutenberg

Artigo Acesso aberto Revisado por pares

Syed S. U. H. Bukhari, Sarah M. Rosanowski, Alan G. McElligott, Rebecca S. V. Parkes,

... a load above 50% of their bodyweight ratio (BWR), the median BWR carried was 77.1% (IQR 54.5-90. ... and 25.3% of donkeys carried above 90% BWR. Donkeys that were loaded at more than 50% BWR were more likely to adopt sternal recumbency compared ... more likely to carry more than the median BWR, when compared to domestic loads (P < 0.001). ... and 5 years carried more than the median BWR compared to those aged over 15 years (P = ... 03). For the models with donkeys carrying median BWR and above 90% BWR, those working in peri- ...

Tópico(s): Ruminant Nutrition and Digestive Physiology

2022 - Frontiers Media | Frontiers in Veterinary Science

Livro

Project Gutenberg

Artigo Acesso aberto Revisado por pares

Il Sheob Shin, Jung-Ching Hsu, Shu‐Mei Huang, Jaw-Rong Chen, Jaw‐Fen Wang, Peter Hanson, Roland Schafleitner,

... complex. Major BW resistance quantitative trait loci (QTLs) Bwr - 12 and Bwr - 6 , and several minor or strain specific QTLs ... markers derived from genotyping-by-sequencing, fine-map Bwr - 12 and Bwr - 6 and determine the effects of these QTLs ... R. solanacearum ) strains were located on chromosomes 6 ( Bwr - 6.1 , 6.2 , 6.3 and 6.4 ) and 12 ( Bwr - 12.1 , Bwr - 12.2 and Bwr - 12.3 ) with logarithm of odds (LOD) scores ... 3 F 3 NILs containing different sections of Bwr -6 with or without Bwr -12 was phenotyped for disease severity after challenge ...

Tópico(s): Banana Cultivation and Research

2020 - Springer Science+Business Media | Euphytica

Artigo Revisado por pares

Omar Alejandro Olvera-Guerrero, Alfonso Prieto‐Guerrero, Gilberto Espinosa-Paredes,

... indicator currently used to assess boiling water reactor (BWR) instability is the Decay Ratio (DR), which is an indicator that assumes stationarity and linearity of BWR signals. However, it is well known that BWRs are complex dynamical systems that may exhibit chaotic ... as much as possible this complex dynamics of BWR systems. With this latter fundamental idea in mind, ... linear Shannon Entropy (SE) is explored to study BWR instability. The SE measures the uncertainty of BWR signals to appraise for system stability, a low ...

Tópico(s): Probabilistic and Robust Engineering Design

2017 - Elsevier BV | Annals of Nuclear Energy

Artigo Revisado por pares

Xian-Jian Lin, Jie Yang, Xiaobo Chen, Ming Zhang, Mingqing Xu,

... Remnant liver volume-to-body weight ratio (RLV-BWR) is more specific than the ratio of RLV- ... Patients having normal liver with an anticipated RLV-BWR ≤0.5% are at considerable risk for hepatic ... the present study, the critical value of RLV-BWR after liver resection in cirrhotic liver was investigated. ... criteria." The influence of RLV-TLV and RLV-BWR on the occurrence of PHLF was investigated, and the critical value of RLV-BWR was concluded. Results According to the occurrence of ... the resected liver volume, RLV-TLV, and RLV-BWR were statistically significant (P < 0.05) between the ...

Tópico(s): Liver Disease Diagnosis and Treatment

2014 - Elsevier BV | Journal of Surgical Research

Livro

Project Gutenberg

Artigo Revisado por pares

C. Aguirre, D. Caruge, F. Castrillo, G. Dominicus, A.J. Geutjes, V. Saldo, T.H.J.J. van der Hagen, D. Hennig, M. Huggenberger, K.C.J. Ketelaar, Annalisa Manera, J.L. Muñoz-Cobo, H-M Prasser, Ulrich L. Rohde, E. Royer, G. Yadigaroglu,

From the beginning of BWR technology it was realized that a BWR can become unstable under particular circumstances caused by a feedback between the thermal- ... addresses the stability issues in current and future BWRs by expanding the basic understanding through well structured ... reactor operation and design on how to avoid BWR instabilities. In order to cover the parameter range ... Two-phase flow scaling laws for a simulated BWR assembly. Nucl. Eng. Des. 148, 455–462.] CIRCUS [ ... MOD1; an advanced best-estimate computer program for BWR accident analysis, Vols. 1–3, EGG-2626, NUREG/ ...

Tópico(s): Fluid Dynamics and Mixing

2004 - Elsevier BV | Nuclear Engineering and Design

Artigo Acesso aberto Revisado por pares

Assaf Naor, Yuval Peres,

... L_p$ compression of the wreath product $\Z\bwr H$ equals $\max{\frac{1}{p},{1/2}}$. ... show that the $L_p$ compression of $\Z\bwr \Z$ equals $\max{\frac{p}{2p-1},\frac23}$ and the $L_p$ compression of $(\Z\bwr\Z)_0$ (the zero section of $\Z\bwr \Z$, equipped with the metric induced from $\Z\bwr \Z$) equals $\max{\frac{p+1}{2p},\frac34}$. ... fact that the Hilbert compression exponent of $\Z\bwr\Z$ equals $\frac23$ while the Hilbert compression exponent of $(\Z\bwr\Z)_0$ equals $\frac34$ is used to show that there exists a Lipschitz function $f:(\Z\bwr\Z)_0\to L_2$ which cannot be ...

Tópico(s): Geometric and Algebraic Topology

2011 - Duke University Press | Duke Mathematical Journal

Artigo Revisado por pares

E. Greenspan, Massimiliano Fratoni, Francesco Ganda, F. Ginex, D.R. Olander, N.E. Todreas, P. Diller, P. Ferroni, Jonathan A. Malen, Antonino Davide Romano, C. Shuffler, J. Trant, Bojan Petrović, H.D. Garkisch,

... pressurised water reactor (PWR) and boiling water reactor (BWR) cores by using solid hydride fuels instead of ... density, fuel bundle design simplicity, in particular for BWRs, safety, attainable discharge burnup, and plutonium (Pu) transmutation ... hydride fuel can safely operate in PWRs and BWRs having comparable or higher power density relative to ... promising applications of hydride fuel in PWRs and BWRs were identified: (1) Recycling Pu in PWRs more ... fuel. (2) Eliminating dedicated water moderator volumes in BWR cores, thus enabling significant increase of the cooled ...

Tópico(s): Fusion materials and technologies

2009 - Elsevier BV | Nuclear Engineering and Design

Artigo Revisado por pares

Jonathan L. Horton, Thomas E. Kolb, Stephen C. Hart,

... DGW) at the dam-regulated Bill Williams River (BWR) was relatively constant and shallow (<4 m). Populus fremontii at BWR did not experience reduced water availability at deeper ... pressure deficit where surface flow was ephemeral at BWR. Lower predawn water potentials of S. gooddingii at BWR suggested reduced water availability at deeper groundwater depths, ... Along the range of depth to groundwater at BWR, all three species suffered little canopy dieback, and ... more rapidly in the ephemeral reaches than at BWR. Both P. fremontii and S. gooddingii experienced reduced ...

Tópico(s): Plant responses to water stress

2001 - Wiley | Ecological Applications

Artigo Revisado por pares

Jonathan L. Horton, Thomas E. Kolb, Stephen C. Hart,

... DGW) at the dam-regulated Bill Williams River (BWR) was relatively constant and shallow (<4 m). Populus fremontii at BWR did not experience reduced water availability at deeper ... pressure deficit where surface flow was ephemeral at BWR. Lower predawn water potentials of S. gooddingii at BWR suggested reduced water availability at deeper groundwater depths, ... Along the range of depth to groundwater at BWR, all three species suffered little canopy dieback, and ... more rapidly in the ephemeral reaches than at BWR. Both P. fremontii and S. gooddingii experienced reduced ...

Tópico(s): Hydrology and Watershed Management Studies

2001 - Wiley | Ecological Applications

Artigo Acesso aberto

Akira Inoue, Tatsuo Kurosu, Toshimasa AOKI, Masanobu FUTAGUCHI, Makoto Yagi, Shinichi MOROOKA, Akehiko HOSHIDE, Takao Ishizuka, Kunihiro Yoshimura, Hiroyuki Yoshida, Toru Mitutake, Nobuaki ABE, Akira KOZIMA, Tuyoshi NAKAJIMA, Satoshi Nakamura, Toshimi SAWA,

Steam void fraction measurement test in a BWR fuel assembly has been carried out to prove the current BWR void prediction method. This report describes the experimental apparatus, experimental data, and ... the high pressure and high temperature conditions of BWRs. Water was used as a coolant. The void distribution in a BWR fuel assembly under BWR operating conditions was measured for the first time ... an electrically heated test assembly which simulated a BWR fuel assembly on a full scale. Void fraction ...

Tópico(s): Nuclear reactor physics and engineering

1995 - Atomic Energy Society of Japan | Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan

Artigo Acesso aberto Revisado por pares

Zvi Metzger, D Colson, Peggy Bown, Timo Weihard, Ingo Baresel, Tim Nolting,

... near-infrared light reflection (NILR) versus bitewing radiography (BWR).Intraoral scans were performed on 100 patients in ... caries and the results were compared to the BWRs. In a total of 3499 proximal surfaces of ... were examined, 223 carious lesions were detected by BWR, while NILR detected 549 carious lesions. Caries detection ... were compared with those done with NILR and BWR. Statistical analysis to compare between NILR and BWR diagnosis was performed using non-parametric two-sided ... early enamel lesions that were not detectable with BWR alone.Within the limitations of the present study, ...

Tópico(s): Dental Health and Care Utilization

2021 - Elsevier BV | Journal of Dentistry

Artigo Brasil Produção Nacional Revisado por pares

Kátia de Oliveira, Hilary M. Clayton, Érik dos Santos Harada,

... bodied riders representing rider: horse body weight ratios (BWRs) 15%, 20%, and 25%. On day 0, the ... GYM-trained horses had higher regularity for all BWRs at walk and 15% and 20% BWRs at trot. Higher stride symmetry was found in GYM-trained horses carrying 25% BWRs at walk and all rider weights at trot. ... GYM-trained horses when carrying 20% and 25% BWRs at walk and 25% BWRs at trot. Dorsoventral power was lower in SED-trained versus GYM-trained horses carrying 15% BWR at walk and 20% BWR at trot. A ...

Tópico(s): Sports injuries and prevention

2020 - Elsevier BV | Journal of Equine Veterinary Science

Artigo Acesso aberto Revisado por pares

Sanju Kunwar, Yun‐Che Hsu, Shu‐Fen Lu, Jaw‐Fen Wang, Jeffrey B. Jones, Samuel F. Hutton, Mathews L. Paret, Peter Hanson,

... identify accessions that may possess QTLs other than Bwr‐6 and Bwr‐12 (two major disease resistance QTLs against bacterial ... Of those, five and 19 were homozygous for Bwr‐6 and Bwr‐12 , respectively, and six were homozygous for both QTLs. Bwr‐12 contributed to resistance against phylotype I strain but not against the phylotype II strain. Bwr‐6 contributed to resistance against both phylotype strains. ... I strain. Entry “94T765‐24‐79”, which lacked Bwr‐6 and Bwr‐12 , demonstrated relatively high resistance ...

Tópico(s): Plant Pathogens and Fungal Diseases

2019 - Wiley | Plant Breeding

Artigo Acesso aberto Revisado por pares

Yongliang Yuan, Guohu Wang,

Bucket wheel reclaimer (BWR) is a complex engineering machine widely used in the open pit mine; it is characterized by the low efficiency ... typical framework structure, is a core component of BWR, which affects the performance of the BWR directly.For addressing this issue, this paper proposes ... obtain the optimal size and shape of the BWR boom by taking the BWR boom as a space framework structure, and improve BWR's performance by meeting the requirements of the ... the standard GA.The structure optimization of the BWR boom is performed using the AGA.From the ...

Tópico(s): Tunneling and Rock Mechanics

2019 - Institute of Electrical and Electronics Engineers | IEEE Access

Artigo Revisado por pares

Shashi Kant Verma, Shobha Lata Sinha, D. K. Chandraker,

... subchannel mixing data has been obtained for usual BWR in which rods are set in square-square, ... circular subchannel array. Subchannel mixing data obtained for BWR cannot be used for AHWR since it is ... at full power. However, being a natural circulation BWR, conversion from single phase to two phase flow ... AHWR rod bundle is entirely different from usual BWRs. The rods in AHWR bundle are arranged in circular subchannel array unlike conventional BWRs geometry in which rods are orderly in square- ... the analysis of above, data obtained from usual BWRs cannot be used for AHWR. In addition, AHWR ...

Tópico(s): Nuclear reactor physics and engineering

2017 - Elsevier BV | Annals of Nuclear Energy

Artigo Revisado por pares

Carsten Lange, D. Hennig, Antonio Hurtado,

... nonlinear stability analysis of boiling water nuclear reactors (BWRs). This approach is called the RAM–ROM method ... the framework of the RAM–ROM method, integrated BWR (system) codes and reduced order models are used ... differential equations describing the stability behaviour of a BWR loop. This methodology is a novel one in ... sense: we analyse the highly nonlinear processes of BWR dynamics by applying validated system codes and by ... nonlinear stability behaviour can increase the reliability of BWR stability analysis. This work is a continuation of ...

Tópico(s): Probabilistic and Robust Engineering Design

2010 - Elsevier BV | Progress in Nuclear Energy

Artigo Acesso aberto Revisado por pares

Kenichi Tada, Akio Yamamoto, Yoshihiro Yamane, Yasunori Kitamura,

... a candidate next-generation core calculation method for BWR. In this study, the diffusion and simplified P3 (SP3) theories are applied to the BWR pin-by-pin fine-mesh calculation. The performances ... homogeneous pin-by-pin fine-mesh calculation for BWR are evaluated through comparison with a cell-heterogeneous ... longer than that using the diffusion theory. The BWR core analysis consists of various calculations, e.g., ... is usually less than half in the typical BWR core analysis. Therefore, the difference in the calculation ...

Tópico(s): Heat transfer and supercritical fluids

2008 - Taylor & Francis | Journal of Nuclear Science and Technology

Artigo Acesso aberto Revisado por pares

Kenichi Tada, Akio Yamamoto, Yoshihiro Yamane, Yasunori KITAMURAY,

... a candidate next-generation core calculation method for BWR. In this study, the diffusion and simplified P3 (SP3) theories are applied to the BWR pin-by-pin fine-mesh calculation. The performances ... homogeneous pin-by-pin fine-mesh calculation for BWR are evaluated through comparison with a cell-heterogeneous ... longer than that using the diffusion theory. The BWR core analysis consists of various calculations, e.g., ... is usually less than half in the typical BWR core analysis. Therefore, the difference in the calculation ...

Tópico(s): Nuclear and radioactivity studies

2008 - Taylor & Francis | Journal of Nuclear Science and Technology

Artigo Acesso aberto Revisado por pares

Charles Forsberg,

A new type of boiling water reactor (BWR) – the process inherent ultimate safety (PIUS) BWR – has been conceived. A PIUS BWR is an advanced BWR that differs from the typical BWR in that a prestressed concrete reactor vessel (PCRV) ... and balance of plant are similar to current BWR designs. This approach effectively eliminates the possibility of ... core meltdown and simplifies plant design.The PIUS BWR does not require operation of any mechanical or ... the PCRV. The PCRV contains a natural circulation BWR; cool, borated water for emergency core cooling; a ...

Tópico(s): Nuclear reactor physics and engineering

1986 - Taylor & Francis | Nuclear Technology

Artigo Acesso aberto Revisado por pares

Isabel Couck, Brent Cauwberghs, Maïté Van Aelst, Alexandre J. Vivanti, Jan Deprest, Liesbeth Lewi,

... digital photograph. We calculated the birth weight ratio (BWR), placental ratio (PR), and birth weight ratio/placenta ratio (BWR/PR), as well as total AV size and ... univariate analyses to assess the following predictors for BWR/PR: VV size, AA size, total AV size, ... with VV anastomoses and 189 without (77%). The BWR and PR were higher in the group with VV. In contrast, BWR/PR was lower in the group with VV ... size and AA size were significantly associated with BWR/PR. However, in multivariate regression, only VV size ...

Tópico(s): Pregnancy and preeclampsia studies

2022 - Elsevier BV | Placenta

Artigo Acesso aberto Revisado por pares

Derek W. Barchenger, Yu-Ming Hsu, Jheng-Yang Ou, Ya‐Ping Lin, Yao‐Cheng Lin, Mark Angelo Balendres, Yun‐Che Hsu, Roland Schafleitner, Peter Hanson,

... destructive. Extensive research has identified two major loci, Bwr-6 and Bwr-12 , that contribute to resistance to BW in ... that were homozygous dominant or heterozygous for all Bwr-6 and Bwr-12 associated molecular markers suggested the action of ... to identify candidate genes that, in addition to Bwr-6 and Bwr-12, contributed to resistance. Through this approach we ... gene Asc which was inside the previously identified Bwr-3 locus. This study provides a foundation for ...

Tópico(s): Legume Nitrogen Fixing Symbiosis

2022 - Nature Portfolio | Scientific Reports

Artigo Acesso aberto Revisado por pares

Friederike Litzenburger, Katrin Heck, Dalia Kaisarly, Karl‐Heinz Kunzelmann,

... teeth were arranged pairwise, examined with bitewing radiography (BWR) and NIRR and validated with micro-computed tomography. ... 24.8% for NIRR and 26.4% for BWR. Overestimation was 10.4% for occlusal NIRR and 0% for BWR. Trilateral NIRR had overall accuracy of 64.8%, ... 6% and underestimation of 19.6%. NIRR and BWR showed high specificity and low sensitivity for proximal caries detection.NIRR achieved diagnostic results comparable to BWR. Trilateral NIRR assessments overestimated presence of proximal caries, ...

Tópico(s): Dental Research and COVID-19

2021 - Springer Nature | Clinical Oral Investigations

Artigo Acesso aberto Revisado por pares

Anna Detkina, Aiden Peakman, Dzianis Litskevich, Jenq‐Horng Liang, Bruno Merk,

... with PWRs, while there is limited knowledge in BWR technologies. Hence, an important aim of this work ... the discrepancies between codes to assess uncertainties in BWR lattice and depletion calculations, while identifying specific development ... the UK WIMS-10A deterministic lattice code for BWR lattice and burnup modelling. Two models of BWR systems were considered for this new systematic comparison. They are a single BWR pin-cell with UO2 fuel only, and a 3 by 3 array of BWR UO2 fuel rods with gadolinia rod in the ...

Tópico(s): Nuclear Physics and Applications

2020 - Multidisciplinary Digital Publishing Institute | Energies

Artigo Acesso aberto Revisado por pares

Majdi I. Radaideh, Dean Price, Daniel O’Grady, Tomasz Kozłowski,

Due to the increased amounts of BWR spent fuel that will need to be transported and stored, additional research is needed in the area of BWR criticality safety and burnup credit. This study performs an advanced depletion analysis for a BWR lattice capturing various BWR operating complexities simultaneously. This is done to address ... k∞ uncertainty, and isotopic inventory. A set of BWR lattice models is developed with evolving complexity, these ... for criticality safety considerations. It was found that BWR modeling require many complexities which make the depletion ...

Tópico(s): Nuclear and radioactivity studies

2019 - Elsevier BV | Progress in Nuclear Energy