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951.
Miguel Teixeira Sandra C. Rodrigues Marta Campo David A. Pacheco Tanaka Margot A. Llosa Tanco Luís M. Madeira José M. Sousa Adélio Mendes 《Chemical Engineering Research and Design》2014
Composite carbon molecular sieve membranes (c-CMSM) were prepared in a single dipping–drying–carbonization step from phenolic resin solutions (12.5–15 wt.%) loaded with boehmite nanoparticles (0.5–1.2 wt.%). A carbon matrix with well-dispersed Al2O3 nanowires was formed from the decomposition of the resin and dehydroxylation of boehmite. The effect of the carbon/Al2O3 ratio on the porous structure of the c-CMSM was accessed based on the pore size distribution and gas permeation toward N2, O2, CO2, He, H2, C3H6 and C3H8. c-CMSM with higher carbon/Al2O3 ratios had a more open porous structure, exhibiting higher permeabilities and lower permselectivities. c-CMSM performance was above the upper bound curves for polymeric membranes for several gas pairs, particularly for C3H6/C3H8 (permeability toward C3H6 of 420 barrer and permselectivity of 18.1 for a c-CMSM with carbon/Al2O3 ratio of 4.4). 相似文献
952.
João Paulo P. Rodrigues Ricardo M. de Paula Luciana N. Rennó Marta M.S. Fontes Andreia F. Machado Sebastião de C. Valadares Filho Pekka Huhtanen Marcos I. Marcondes 《Journal of dairy science》2017,100(6):4435-4447
We aimed to quantify the productive and metabolic responses, and digestive changes in dairy cows fed various concentrations of soybean oil (SBO) in high-concentrate, sugarcane-based diets. Eight rumen-cannulated multiparous Holstein cows in mid lactation (574 ± 19.1 kg of body weight and 122 ± 6.9 d in milk), averaging 22.5 ± 1.22 kg/d of milk were assigned to replicated 4 × 4 Latin squares. The experimental period lasted 21 d as follows: 14 d for adaptation, followed by a sampling period from d 15 to 21. The diets were formulated with increasing concentrations of SBO [% of dry matter (DM)]: control (0%), low (LSBO; 1.57%), medium (MSBO; 4.43%), and high (HSBO; 7.34%). Dry matter intake decreased quadratically in response to SBO addition. The greatest decrease in DM intake was observed in MSBO and HSBO diets. Both milk and energy-corrected milk yield were quadratically affected by the SBO inclusion, with a slight decrease up to MSBO and substantial decrease in the HSBO diet. The milk fat concentration linearly decreased from 3.78% in the control to 3.50% in the HSBO diet. The potentially digestible neutral detergent fiber digestibility in the rumen decreased from 55.7% in the control to 35.2% in the HSBO diet. The fractional rate of digestion of potentially digestible neutral detergent fiber in the rumen decreased linearly from 3.13 to 1.39%/h from the control to HSBO diet. The fractional rate of indigestible neutral detergent fiber passage in the rumen was quadratically affected, with the lowest value (2.25%/h) for the HSBO diet. Rumen pH increased from 6.42 to 6.67, and ammonia nitrogen decreased from 28.1 to 21.4 mg/dL, in the control and HSBO diets, respectively. Rumen volatile fatty acids decreased quadratically, with the greatest decrease observed in MSBO and HSBO diets. Serum concentrations of glucose, fatty acids, and β-hydroxybutyrate were unaffected by SBO inclusion. However, serum concentrations of total cholesterol and high- and low-density lipoproteins linearly increased with increasing concentrations of SBO in the diet. Inclusion of SBO at concentrations from 4.43 to 7.34% of the diet DM decreased DM intake, energy-corrected milk production, fiber digestibility, and rumen fermentation and was thus not recommended. Soybean oil supplementation at 1.57% of the diet DM proved to be a safe concentration for dairy cows fed high-concentrate diets with sugarcane as the sole forage. 相似文献
953.
S. da Silva L. Sollenberger Lynn E. Kimberly Mullenix M. Kohmann Marta M. Dubeux Jose C. B. Silveira Maria L. 《Nutrient Cycling in Agroecosystems》2022,122(1):105-117
Nutrient Cycling in Agroecosystems - Soils under grasslands contribute significantly to terrestrial carbon (C) and nitrogen (N) pools, and grassland management practices directly impact pool size... 相似文献
954.
Aleksandra Siekierzynska Dorota Piasecka-Kwiatkowska Wojciech Litwinczuk Marta Burzynska Aleksander Myszka Pawel Karpinski Elzbieta Zygala Narcyz Piorecki Ewa Springer Tomasz Sozanski 《International journal of molecular sciences》2021,22(7)
About 50–70% of patients allergic to birch pollen suffer from sensitization after apple ingestion. Apple allergenicity was established in only few varieties. Studies were performed on apple fruits of 21 traditional and nine modern varieties organically, intensively, or integratively produced. The aim of the study was to assess whether the factors like cultivation method, maturity stage, genotype, or type of tissue place an impact on the allergenic potential of apples. To answer these questions, we used semiquantitative real-time PCR, ELISA, and immunoblotting. Apple allergen genes present divergent expression across apple cultivars. Expression of the Mal d 1.06A correlates with the Mal d 1 level and is affected by the cultivation method and maturity of the fruit. The content of the main allergen Mal d 1 varied widely across cultivars. Interestingly, in our study, the Gala variety presented a low Mal d 1 concentration regardless of the cultivation method. Based on the Mal d 1.06A expression, the Mal d 1 protein content, and the immunoreactivity assay, the Kandil Sinap, Kosztela, Rumianka from Alma-Ata, Kantówka Gdańska, Reinette Coulon, and Gala cultivars emerged as potentially hypoallergenic apple cultivars. Our study allowed distinguishing between potentially low, medium, and highly allergenic varieties. 相似文献
955.
956.
Giovanni Zarrilli Valentina Angerilli Gianluca Businello Marta Sbaraglia Giulia Traverso Francesco Fortarezza Stefania Rizzo Monica De Gaspari Cristina Basso Fiorella Calabrese Angelo Paolo Dei Tos Matteo Fassan 《International journal of molecular sciences》2021,22(2)
A complete understanding of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) physiopathology and related histopathologic lesions is necessary to improve treatment and outcome of coronavirus disease 2019 (COVID-19) patients. Many studies have focused on autopsy findings in COVID-19-related deaths to try and define any possible specific pattern. Histopathologic alterations are principally found within lungs and blood vessels, and these abnormalities also seem to have the highest clinical impact. Nevertheless, many of the morphological data collected so far are non-specific, fickle, and possibly associated with other co-existing factors. The aim of this minireview is to describe the main histopathological features related to COVID-19 and the mechanism known as “cytokine storm”. 相似文献
957.
Laia Just-Borrs Víctor Cilleros-Ma Erica Hurtado Olivier Biondi Frdric Charbonnier Marta Toms Neus Garcia Josep Toms Maria A. Lanuza 《International journal of molecular sciences》2021,22(9)
Physical exercise improves motor control and related cognitive abilities and reinforces neuroprotective mechanisms in the nervous system. As peripheral nerves interact with skeletal muscles at the neuromuscular junction, modifications of this bidirectional communication by physical activity are positive to preserve this synapse as it increases quantal content and resistance to fatigue, acetylcholine receptors expansion, and myocytes’ fast-to-slow functional transition. Here, we provide the intermediate step between physical activity and functional and morphological changes by analyzing the molecular adaptations in the skeletal muscle of the full BDNF/TrkB downstream signaling pathway, directly involved in acetylcholine release and synapse maintenance. After 45 days of training at different intensities, the BDNF/TrkB molecular phenotype of trained muscles from male B6SJLF1/J mice undergo a fast-to-slow transition without affecting motor neuron size. We provide further knowledge to understand how exercise induces muscle molecular adaptations towards a slower phenotype, resistant to prolonged trains of stimulation or activity that can be useful as therapeutic tools. 相似文献
958.
Santos Paulo Oliveira Ana Correia Beirão Daniel Franclim Carlos Magalhães Marta Couto Luciana Sá Luísa Hespanhol Alberto 《Universal Access in the Information Society》2021,20(2):417-420
Universal Access in the Information Society - Medical practice has changed since the classical paternalistic model to nowadays. Currently, the patient assumes a more important role in the decision... 相似文献
959.
Kowal Marta Sorokowski Piotr Kulczycki Emanuel Żelaźniewicz Agnieszka 《Scientometrics》2022,127(1):265-273
Scientometrics - The beauty of science lies within its core assumption that it seeks to identify the truth, and as such, the truth stands alone and does not depend on the person who proclaims it.... 相似文献
960.
Marta Cuaresma Saturio Víctor López Óscar González de Dios Fernando Muñoz del Nuevo Juan Pedro Fernández-Palacios 《Journal of Network and Systems Management》2014,22(3):488-508
Path computation element (PCE) architecture has been defined for different scenarios such as multi-layer and multi-domain. PCE computes the routes based on the information in the traffic engineering database (TED). TED is updated with the control plane information. However, resource status in the network elements may differ from the information in the TED, because there is a delay from the network element reserves a resource, until the TED is updated. Therefore, PCE can reply with resources, which are busy leading to extra blocking. Pre-reservation mechanism eliminates this blocking, because PCE can book the computed path resources for a certain period as if they were busy. This work demonstrates the importance of this mechanism in two scenarios: multiple PCEs architecture and massive restoration. To do so, we have implemented and tested on a real control plane set-up three schemes to operate with multiple PCEs in a single domain and a massive restoration scenario. 相似文献