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  1. Article ; Online: Critical Percolation in the Ordering Kinetics of Twisted Nematic Phases.

    Almeida, Renan A L

    Physical review letters

    2024  Volume 131, Issue 26, Page(s) 268101

    Abstract: I report on the experimental confirmation that critical percolation statistics underlie the ordering kinetics of twisted nematic phases in the Allen-Cahn universality class. Soon after the ordering starts from a homogeneous disordered phase and proceeds ... ...

    Abstract I report on the experimental confirmation that critical percolation statistics underlie the ordering kinetics of twisted nematic phases in the Allen-Cahn universality class. Soon after the ordering starts from a homogeneous disordered phase and proceeds toward a broken Z_{2}-symmetry phase, the system seems to be attracted to the random percolation fixed point at a special timescale t_{p}. At this time, exact formulas for crossing probabilities in percolation theory agree with the corresponding probabilities in the experimental data. The ensuing evolution for the number density of hull-enclosed areas is described by an exact expression derived from a percolation model endowed with curvature-driven interface motion. Scaling relation for hull-enclosed areas versus perimeters reveals that the fractal percolation geometry is progressively morphed into a regular geometry up to the order of the classical coarsening length. In view of its universality and experimental possibilities, the study opens a path for exploring percolation keystones in the realm of nonequilibrium, phase-ordering systems.
    Language English
    Publishing date 2024-01-12
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.131.268101
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Clinical trials that will change practices: News in palliative radiotherapy.

    Agnoux, E / Renan, A / Faivre, J-C

    Cancer radiotherapie : journal de la Societe francaise de radiotherapie oncologique

    2023  Volume 27, Issue 8, Page(s) 746–753

    Abstract: Palliative radiotherapy is used to alleviate cancer-related symptoms. Symptomatic responses to palliative radiotherapy may however take several weeks, meaning that patients need to survive long enough to derive a real benefit. Oncologists can be ... ...

    Abstract Palliative radiotherapy is used to alleviate cancer-related symptoms. Symptomatic responses to palliative radiotherapy may however take several weeks, meaning that patients need to survive long enough to derive a real benefit. Oncologists can be optimistic when estimating survival for patients with advanced cancer and as a consequence some patients receiving palliative radiotherapy die before experiencing any gain. Models of patient survival have limited accuracy, particularly for predicting whether patients will die within the next 30 days. Dedicated rapid access palliative radiotherapy clinics, in which patients are assessed, simulated and treated on the same day, reduce the number of patient visits to the radiation oncology department and hence the burden on the patient as well as costs. Teleconsultation and advanced practice nurses can play a crucial role in providing rapid access to palliative radiotherapy in a dedicated palliative radiotherapy service. Single-fraction palliative radiotherapy should be offered to eligible patients if they are able to attend treatment and could potentially benefit from symptom palliation, irrespective of predicted life expectancy. Technical and organizational innovations have been proposed in order to dispense with the computed tomography scanner by carrying out the dosimetry on a recent diagnostic scanner or a magnetic resonance imaging scanner with integrated linear acceleration system. Stereotactic body radiation therapy makes it possible to envisage greater and more lasting analgesic benefits in patients with painful bone metastasis and good prognosis. Flash radiotherapy remains at the preclinical stage.
    MeSH term(s) Humans ; Palliative Care/methods ; Bone Neoplasms/secondary ; Pain ; Radiosurgery ; Costs and Cost Analysis ; Radiotherapy/methods
    Language English
    Publishing date 2023-10-25
    Publishing country France
    Document type Journal Article ; Review
    ZDB-ID 1397169-4
    ISSN 1769-6658 ; 1278-3218
    ISSN (online) 1769-6658
    ISSN 1278-3218
    DOI 10.1016/j.canrad.2023.08.004
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Book ; Online: Critical percolation in the ordering kinetics of twisted nematic phases

    Almeida, Renan A. L.

    2023  

    Abstract: I report on the experimental confirmation that critical percolation statistics underlie the ordering kinetics of twisted nematic phases in the Allen-Cahn universality class. Soon after the ordering starts from a homogeneous disordered phase and proceeds ... ...

    Abstract I report on the experimental confirmation that critical percolation statistics underlie the ordering kinetics of twisted nematic phases in the Allen-Cahn universality class. Soon after the ordering starts from a homogeneous disordered phase and proceeds towards a broken $\mathbb{Z}_2$-symmetry phase, the system seems to be attracted to the random percolation fixed point at a special timescale $t_{\textrm{p}}$. At this time, exact formulae for crossing probabilities in percolation theory agree with the corresponding probabilities in the experimental data. The ensuing evolution for the number density of hull-enclosed areas is described by an exact expression derived from a percolation model endowed with curvature-driven interface motion. Scaling relation for hull-enclosed areas versus perimeters reveals that the fractal percolation geometry is progressively morphed into a regular geometry up to the order of the classical coarsening length. In view of its universality and experimental possibilities, the study opens a path for exploring percolation keystones in the realm of nonequilibrium, phase-ordering systems.
    Keywords Condensed Matter - Statistical Mechanics ; Condensed Matter - Soft Condensed Matter
    Subject code 612
    Publishing date 2023-06-20
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: Cycle of the sexual segment of the kidney: histological insights into the role of the urinary tract in the reproduction of male Notomabuya frenata (Squamata: Scincidae).

    Migliore, Serena N / Ramalho, Renan A / Araújo, Gabrieli S / Almeida-Santos, Selma M

    Zoology (Jena, Germany)

    2024  Volume 162, Page(s) 126146

    Abstract: The kidneys of male Squamata have an important reproductive function as some portions of the nephron may undergo hypertrophy, characterizing the sexual segment of the kidney (SSK). Although its function is still not completely understood, it is believed ... ...

    Abstract The kidneys of male Squamata have an important reproductive function as some portions of the nephron may undergo hypertrophy, characterizing the sexual segment of the kidney (SSK). Although its function is still not completely understood, it is believed that the secretions produced by the SSK may act in the maintenance of spermatozoa. In this study, we investigated the reproductive biology of males of Notomabuya frenata based on the seasonal variation of the SSK. We performed macroscopic and microscopic evaluations of the male reproductive tract of museum specimens to characterize the SSK cycle. The nephron portion in which hypertrophy was observed was the collecting duct with secretory granules accumulation in the apical portion. SSK hypertrophy was observed in all seasons, with the tubule diameter in autumn differing from spring and the epithelium height showing no variation. Alcian Blue reacted positively to acid mucopolysaccharides in all seasons. Periodic acid-Schiff's reacted positively to neutral mucopolysaccharides in all seasons, except autumn. Both stains reacted only in the collecting duct. In addition, spermatozoa were found in the lumen of the SSK of one specimen examined. Cycle of the SSK varied seasonally as does the chemical composition of the secretions produced by the collecting duct. The reflux of spermatozoa into SSK may indicate that (1) these secretions act in sperm maintenance, and (2) possibly there is communication between the seminal and urinary ducts.
    MeSH term(s) Male ; Animals ; Semen ; Kidney ; Urinary Tract ; Snakes ; Reproduction ; Lizards ; Glycosaminoglycans ; Hypertrophy ; Seasons
    Chemical Substances Glycosaminoglycans
    Language English
    Publishing date 2024-01-17
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1191401-4
    ISSN 1873-2720 ; 0944-2006
    ISSN (online) 1873-2720
    ISSN 0944-2006
    DOI 10.1016/j.zool.2024.126146
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Performance in field-tests and dynamic knee valgus in soccer players psychologically ready and not ready to return to sports after ACL reconstruction.

    Correa, Ricardo V / Verhagen, Evert / Resende, Renan A / Ocarino, Juliana M

    The Knee

    2023  Volume 42, Page(s) 297–303

    Abstract: Background: The objective was to compare the performance in field tests, dynamic knee valgus, knee function, and kinesiophobia of soccer players who were psychologically ready and not ready to return to unrestricted training or competitions after ACL ... ...

    Abstract Background: The objective was to compare the performance in field tests, dynamic knee valgus, knee function, and kinesiophobia of soccer players who were psychologically ready and not ready to return to unrestricted training or competitions after ACL reconstruction.
    Methods: Thirty-five male soccer players who had undergone primary ACL reconstruction at least 6 months were divided based on the Anterior Cruciate Ligament Return to Sport after Injury (ACL-RSI) questionnaire score into ready (≥60) and not-ready (<60) groups. The modified Illinois change of direction test (MICODT) and reactive agility test (RAT) were used to impose the demand for directional change and reactive decision-making. We assessed the frontal plane knee projection angle (FPKPA) during a single-leg squat and distance in crossover hop test (CHD). In addition, we assessed kinesiophobia through the shortened version of the Tampa Scale of Kinesiophobia (TSK-11) and knee function using the International Knee Documentation Committee Subjective Knee Form (IKDC). Independent t-tests were used to compare the groups.
    Results: The not-ready group had lower performance on the MICODT (effect size (ES) = -1.2; p < 0.001) and RAT (ES = -1.1; p = 0.004) tests and higher FPKPA (ES = 1.5; p < 0.001). In addition, they presented lower IKDC (ES = 3.1; p < 0.001) and higher TSK-11 (ES = -3.3; p < 0.001) scores.
    Conclusions: Physical and psychological deficits may persist in some individuals after rehabilitation. On-field tests and dynamic knee alignment evaluation should be included in the athlete evaluation before the decision-making about clearance to sports participation, especially in athletes who perceive themselves as psychologically not ready.
    MeSH term(s) Humans ; Male ; Soccer ; Return to Sport/psychology ; Anterior Cruciate Ligament Injuries/surgery ; Recovery of Function ; Knee Joint/surgery
    Language English
    Publishing date 2023-04-27
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 1200476-5
    ISSN 1873-5800 ; 0968-0160
    ISSN (online) 1873-5800
    ISSN 0968-0160
    DOI 10.1016/j.knee.2023.04.011
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: The effects of fiber source on extrusion parameters and kibble structure of dry dog foods

    Donadelli, Renan A / Dogan, Hulya / Aldrich, Greg

    Animal feed science and technology. 2021 Apr., v. 274

    2021  

    Abstract: Beet pulp (BP) and cellulose (CE) are fibrous ingredients commonly used by pet food companies to produce diets targeting weight management and gut health. Miscanthus grass (MG) is a novel fibrous ingredient that might affect food manufacturing in a ... ...

    Abstract Beet pulp (BP) and cellulose (CE) are fibrous ingredients commonly used by pet food companies to produce diets targeting weight management and gut health. Miscanthus grass (MG) is a novel fibrous ingredient that might affect food manufacturing in a similar manner to CE. The objective was to determine the effects of these three fiber sources on extrusion processing and kibble characteristics of dog foods. Diets were composed of 90 % basal ration and 10 % of each MG (827.4 g/kg insoluble fiber, 72.6 g/kg soluble fiber), CE (1000 g/kg insoluble fiber), or BP (360.0 g/kg insoluble fiber, 263.7 g/kg soluble fiber). Three batches of each treatment were mixed separately prior to extrusion. During production, processing conditions were recorded every 20 min after steady state was achieved. At each time point, 10 kibbles were randomly sampled to measure diameter and length out of the extruder and exiting the dryer. Sectional expansion ratio index (SEI) was calculated using the die and kibble diameter. Diet total dietary fiber (TDF) was similar among treatments (MG = 199.7 g/kg, CE = 204.7 g/kg, BP = 175.9 g/kg). The fiber source did not affect preconditioner and extruder parameters, except specific mechanical energy (SME), in which BP was higher than MG and CE (P<0.05; 111.8 vs. 108.9 and 108.7 W h/kg, respectively). Additionally, kibble from the BP diet had larger diameter and SEI than MG and CE (P<0.05). Kibbles from the BP diet tended (P>0.10) to have greater volume than MG kibbles. MG kibbles had a smaller volume than CE and BP kibbles. CE kibbles were less dense than BP kibbles. These results indicate that a diet containing MG can be processed with similar conditions to a diet containing CE. In conclusion, the extrusion parameters were minimally affected by fiber source, and differences in kibble characteristics could be corrected with modest process adjustments.
    Keywords Miscanthus ; beet pulp ; cellulose ; dietary fiber ; digestive system ; dogs ; extrusion ; grasses ; ingredients ; insoluble fiber ; pet foods ; soluble fiber ; specific mechanical energy ; weight control
    Language English
    Dates of publication 2021-04
    Publishing place Elsevier B.V.
    Document type Article
    Note NAL-light
    ZDB-ID 196563-3
    ISSN 0377-8401
    ISSN 0377-8401
    DOI 10.1016/j.anifeedsci.2021.114884
    Database NAL-Catalogue (AGRICOLA)

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  7. Article ; Online: Redescription of the Rio skate Rioraja agassizii (Rajiformes

    Karla D. A. Soares / Renan A. Moreira / Ulisses L. Gomes

    Neotropical Ichthyology, Vol 19, Iss

    Arhynchobatidae) with notes on internal anatomy and intraspecific variation

    2021  Volume 2

    Abstract: Abstract Rioraja agassizii belongs to the monotypic genus Rioraja and differs from the other Riorajini species of the genus Atlantoraja by the shape of anterior nasal flap, squamation, clasper skeleton, body measurements and color pattern. Although R. ... ...

    Abstract Abstract Rioraja agassizii belongs to the monotypic genus Rioraja and differs from the other Riorajini species of the genus Atlantoraja by the shape of anterior nasal flap, squamation, clasper skeleton, body measurements and color pattern. Although R. agassizii is a well-known species, commonly captured in inshore waters of the southwestern Atlantic, its external morphology and internal anatomy have never been fully described and little is known on intraspecific variation within the species. Juvenile and adult, male and female specimens were examined, measured and dissected. Herein, we redescribe the species and present detailed descriptions and illustrations of external morphology, neurocranium, jaws, hyoid and gill arches, and pelvic fin and girdle. Additionally, notes on sexual dimorphism and ontogenetic differences in coloration, body and cranial measurements, and dermal denticles are provided.
    Keywords Anatomy ; Sexual dimorphism ; Taxonomy ; Zoology ; QL1-991
    Subject code 590
    Language English
    Publishing date 2021-06-01T00:00:00Z
    Publisher Sociedade Brasileira de Ictiologia
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: The effects on nutrient utilization and stool quality of Beagle dogs fed diets with beet pulp, cellulose, and Miscanthus grass12.

    Donadelli, Renan A / Aldrich, Charles G

    Journal of animal science

    2019  Volume 97, Issue 10, Page(s) 4134–4139

    Abstract: Dogs can benefit from dietary fibers. Traditionally, cellulose (CE) and beet pulp (BP) have been used by pet food companies as insoluble and soluble fiber sources. Miscanthus grass (MG) is a novel fiber ingredient made from Miscanthus giganteus, a C4 ... ...

    Abstract Dogs can benefit from dietary fibers. Traditionally, cellulose (CE) and beet pulp (BP) have been used by pet food companies as insoluble and soluble fiber sources. Miscanthus grass (MG) is a novel fiber ingredient made from Miscanthus giganteus, a C4 grass produced for its fiber content, but it has not been evaluated for dogs. The objectives of this study were to determine the effects of different fiber sources on nutrient utilization and stool consistency by dogs. Twelve Beagle dogs were fed 3 dietary treatments varying in their fiber sources (BP, CE, MG). Diets were fed for a 14-d period (9 d adaptation), fecal samples were collected (5 d total fecal collection) and scored. Nutrient digestibility was estimated using total fecal collection (TFC). Dogs fed BP diet had softer stools than dogs fed CE and MG (3.15 vs. 3.68 and 3.64, respectively). Wet fecal output was higher for dogs fed CE compared to MG, with dogs fed BP having the lowest values (254.3 g vs. 241.6 g vs. 208.5 g, respectively). Dogs fed CE and MG had lower DM digestibility than dogs fed BP (P < 0.05), dogs fed BP had lower CP digestibility compared with dogs fed MG and CE (81.4% vs. 85.5% and 85.8%, respectively). In conclusion, MG could be used as an alternative fiber source to CE.
    MeSH term(s) Animal Feed/analysis ; Animals ; Beta vulgaris ; Cellulose/metabolism ; Diet/veterinary ; Dietary Fiber/metabolism ; Digestion ; Dogs/physiology ; Feces/chemistry ; Female ; Nutrients/metabolism ; Poaceae
    Chemical Substances Dietary Fiber ; Cellulose (9004-34-6)
    Language English
    Publishing date 2019-08-15
    Publishing country United States
    Document type Journal Article
    ZDB-ID 390959-1
    ISSN 1525-3163 ; 0021-8812
    ISSN (online) 1525-3163
    ISSN 0021-8812
    DOI 10.1093/jas/skz265
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Impact of Pressure Recovery Adjustment on Aortic Valve Area Classification of Disease Severity in Transcatheter Aortic Valve Replacement Patients.

    Gonzalez-Ciccarelli, Luis F / Ferrufino, Renan A / Alfadhel, Abdulaziz / Brovman, Ethan / Ortoleva, Jamel / Wessler, Benjamin S / Fettiplace, Michael / Cobey, Frederick

    Journal of cardiothoracic and vascular anesthesia

    2024  Volume 38, Issue 6, Page(s) 1309–1313

    Abstract: Objectives: To determine the impact of pressure recovery (PR) adjustment on disease severity grading in patients with severe aortic stenosis. The authors hypothesized that accounting for PR would result in echocardiographic reclassification of aortic ... ...

    Abstract Objectives: To determine the impact of pressure recovery (PR) adjustment on disease severity grading in patients with severe aortic stenosis. The authors hypothesized that accounting for PR would result in echocardiographic reclassification of aortic stenosis severity in a significant number of patients.
    Design: A retrospective observational study between October 2013 and February 2021.
    Setting: A single-center, quaternary-care academic center.
    Participants: Adults (≥18 years old) who underwent transcatheter aortic valve implantation (TAVI).
    Interventions: TAVI.
    Measurements and main results: A total of 342 patients were evaluated in this study. Left ventricle mass index was significantly greater in patients who continued to be severe after PR (100.47 ± 28.77 v 90.15 ± 24.03, p = < 0.000001). Using PR-adjusted aortic valve area (AVA) resulted in the reclassification of 81 patients (24%) from severe to moderate aortic stenosis (AVA >1.0 cm
    Conclusion: Adjusting calculated AVA for PR resulted in a reclassification of a significant number of adult patients from severe to moderate aortic stenosis. PR was significantly larger in patients who reclassified from severe to moderate aortic stenosis after adjusting for PR. PR appeared to remain relevant in patients with STJ ≥3.0 cm. Clinicians need to be aware of PR and how to account for its effect when measuring pressure gradients with Doppler.
    MeSH term(s) Humans ; Male ; Female ; Retrospective Studies ; Transcatheter Aortic Valve Replacement/methods ; Aortic Valve Stenosis/surgery ; Aortic Valve Stenosis/diagnostic imaging ; Aortic Valve Stenosis/physiopathology ; Severity of Illness Index ; Aged ; Aged, 80 and over ; Aortic Valve/surgery ; Aortic Valve/diagnostic imaging ; Aortic Valve/physiopathology ; Echocardiography/methods
    Language English
    Publishing date 2024-02-29
    Publishing country United States
    Document type Journal Article ; Observational Study
    ZDB-ID 1067317-9
    ISSN 1532-8422 ; 1053-0770
    ISSN (online) 1532-8422
    ISSN 1053-0770
    DOI 10.1053/j.jvca.2024.02.036
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Influence of reduced passive ankle dorsiflexion range of motion on lower limb kinetics and stiffness during gait.

    Aquino, Mariana R C / Resende, Renan A / Van Emmerik, Richard / Souza, Thales R / Fonseca, Sergio T / Kirkwood, Renata N / Ocarino, Juliana M

    Gait & posture

    2024  Volume 109, Page(s) 147–152

    Abstract: Background: The ankle dorsiflexion range of motion (ADF-ROM) during single support phase allows elastic energy storage in the calcaneal tendon, contributing to advance the body forward. Reduced ADF-ROM may influence lower limb kinetics and stiffness.: ...

    Abstract Background: The ankle dorsiflexion range of motion (ADF-ROM) during single support phase allows elastic energy storage in the calcaneal tendon, contributing to advance the body forward. Reduced ADF-ROM may influence lower limb kinetics and stiffness.
    Research question: What is the influence of reduced passive ADF-ROM on lower limb internal moments and stiffness during gait?
    Methods: Thirty-two participants, classified into two groups according to passive ADF-ROM (smaller than 10° and greater than 15°), were submitted to gait assessment at self-selected speed with a force platform and a three-dimensional motion analysis system. Statistical parametrical mapping (SPM) analyses were used to compare the lower limbs' internal moments between groups. Independent t-tests analyzed the differences between groups on lower limb stiffness during gait.
    Results: The lower ADF-ROM group had greater knee flexor moment (terminal stance and push-off), greater ankle abductor (i.e., shank internal rotator) moment in terminal stance and greater knee internal rotator moment in mid to terminal stance. The lower ADF-ROM group also had higher lower limb stiffness during gait.
    Significance: Individuals with reduced passive ADF-ROM had greater lower limb stiffness and adopted a gait pattern with increased knee and ankle moments, suggesting increased loading at these joints.
    MeSH term(s) Humans ; Ankle ; Walking ; Gait ; Lower Extremity ; Knee Joint ; Ankle Joint ; Range of Motion, Articular ; Biomechanical Phenomena
    Language English
    Publishing date 2024-01-19
    Publishing country England
    Document type Journal Article
    ZDB-ID 1162323-8
    ISSN 1879-2219 ; 0966-6362
    ISSN (online) 1879-2219
    ISSN 0966-6362
    DOI 10.1016/j.gaitpost.2024.01.020
    Database MEDical Literature Analysis and Retrieval System OnLINE

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