Relevant bibliographies by topics / Addition calcaire

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  1. Journal articles

Academic literature on the topic 'Addition calcaire'

Author: Grafiati
Published: 10 October 2023

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Journal articles on the topic "Addition calcaire"

1

Belmahi, Samir, Mohammed Zidour, and Tayeb Bensatllah. "Mechanical behavior of mortars composed of a mixture of cement and lime stone filler." Lebanese Science Journal 19, no. 1 (2018): 95–104. http://dx.doi.org/10.22453/lsj-019.1.095-104.

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This work consists in studying the mechanical behavior of mortars composed of a mixture of cement and fire-clay. The limestone filler is used as an additive in this mixture. The main idea wasto compare this mortar with an ordinary mortar,made with a normal sand, thus,to know the limit of their use in construction.The results showed and confirmed that fire-clay mortar, cannot give better resistances than a normal sand mortar. The second idea wasto introduce the limestone filler manufactured by ENG Tlemcen (Algeria) as an addition. Theproposed percentages varied from 5% to 30% of the cement mass. The resultsobtained showed that the substitution of a part of cement by the limestone filler helps to improve the mechanicals resistances of mortars and that the best fraction of limestone filler wasfixed at 10%.
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2

HAOUAT, Abdellah, and Omar AZZOUZ. "Substitution de Ciment pour Béton par des Pourcentages de Poudre de Marbre." International Journal of Financial Accountability, Economics, Management, and Auditing (IJFAEMA) 3, no. 4 (2021): 552–59. http://dx.doi.org/10.52502/ijfaema.v3i4.122.

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Le but de cette étude est la valorisation des résidus minéraux en tant que substitution partielle du ciment qui entre dans la fabrication du béton. Il s'inscrit dans une démarche de développement durable. Il regroupe les résultats obtenus expérimentalement. L'utilisation des poudres de marbre en remplacement partiel du ciment Portland dans le béton permet de réduire les émissions de gaz à effet de serre et génère un béton ayant un impact moindre sur l'environnement. En mettant à profit diverses techniques expérimentales, une attention particulière est accordée au comportement de la poudre de marbre finement broyée associée au ciment Portland avec addition de calcaire. Cette étude a confirmé l’amélioration des propriétés physiques des bétons avec l’ajout de poudre de marbre, ce qui laisse augurer de bonnes perspectives pour son utilisation comme substituant de ciment.
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3

Bu, X. L., J. Su, J. H. Xue, Y. B. Wu, C. X. Zhao, and L. M. Wang. "Effect of rice husk biochar addition on nutrient leaching and microbial properties of Calcaric Cambisols." Journal of Soil and Water Conservation 74, no. 2 (2019): 172–79. http://dx.doi.org/10.2489/jswc.74.2.172.

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4

López-Martínez, N., A. Olmo, and J. Torrent. "Dissolved reactive phosphorus in a Calcaric Fluvisol as affected by the addition of agricultural wastes." Soil Use and Management 20, no. 1 (2006): 74–80. http://dx.doi.org/10.1111/j.1475-2743.2004.tb00339.x.

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5

López-Martínez, N., A. del Olmo, and J. Torrent. "Dissolved reactive phosphorus in a Calcaric Fluvisol as affected by the addition of agricultural wastes." Soil Use and Management 20, no. 1 (2004): 74–80. http://dx.doi.org/10.1079/sum2003225.

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6

Ingerpuu, Nele, Loore Ehrlich, Mare Leis, Tiiu Kupper, Leiti Kannukene, and Kai Vellak. "Additions and changes to the species list of Estonian bryophytes." Folia Cryptogamica Estonica 59 (July 7, 2022): 23–25. http://dx.doi.org/10.12697/fce.2022.59.05.

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Since the last additions (Vellak et al., 2021), four new species should be added to the list. Two of these (Calypogeia fissa and Timmia austriaca) are new finds, two (Hedwigia emodica and Syntrichia ruraliformis) were earlier known as varieties in Estonia. One species (Seligeria patula) should be excluded from the list since the voucher specimen was re-identified as S. calcarea and no other specimens were found among all collected specimens of genus Seligeria in Estonian herbaria and during inventories of genus Seligeria at all known localities in Estonia in 2020-2021. The number of species in Estonian bryoflora is now 615. The distribution and threats on the new species in Estonia are not known yet and need further inventories, thus all are evaluated here as data deficient (DD). Estonian names for all new species are presented in parenthesis and the distribution and ecology is briefly discussed.
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7

Yu, Yao, Dong-Yi Lan, Li-Ying Tang, et al. "Intrinsic functional connectivity alterations of the primary visual cortex in patients with proliferative diabetic retinopathy: a seed-based resting-state fMRI study." Therapeutic Advances in Endocrinology and Metabolism 11 (January 2020): 204201882096029. http://dx.doi.org/10.1177/2042018820960296.

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Purpose: In this study, we aimed to investigate the differences in the intrinsic functional connectivity (iFC) of the primary visual cortex (V1), based on resting-state functional magnetic resonance imaging (rs-fMRI), between patients with proliferative diabetic retinopathy (PDR) and healthy controls (HCs). Methods: In total, 26 patients (12 males, 14 females) with PDR and 26 HCs (12 males, 14 females), matched for sex, age, and education status, were enrolled in the study. All individuals underwent rs-fMRI scans. We acquired iFC maps and compared the differences between PDR patients and the HCs. Results: The PDR group had significantly increased FC between the left V1 and the right middle frontal gyrus (RMFG), and significantly reduced FC between the left V1 and the cuneus/calcarine/precuneus. In addition, the PDR patients had significantly increased FC between the right V1 and the right superior frontal gyrus (RSFG), and significantly reduced FC between the right V1 and the cuneus/calcarine/precuneus. The individual areas under the curve (AUCs) of FC values for the left V1 were as follows: RMFG (0.871, p < 0.001) and the cuneus/calcarine/precuneus (0.914, p < 0.001), while the AUCs of FC values for the right V1 were as follows: RSFG (0.895, p < 0.001) and the cuneus/calcarine/precuneus (0.918, p < 0.001). Conclusions: The results demonstrated that, in PDR patients, altered iFC in distinct brain regions, including regions related to visual information processing and cognition. Considering the rise in the diabetes mellitus incidence rate and the consequences of PDR, the results could provide promising clues for exploring the neural mechanisms related to PDR and possible approaches for the early identification of PDR.
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8

Reis, Ana Carolina Botelho dos, and Júlia Ronzella Ottoni. "Antifungal activity of homeopathic medicines against the white mold causing agent Sclerotinia sclerotiorum." Acta Scientiarum. Biological Sciences 43 (October 25, 2021): e56548. http://dx.doi.org/10.4025/actascibiolsci.v43i1.56548.

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White mold disease, caused by fungus Sclerotinia sclerotiorum (Lib.) de Bary., is a disease hard to control due to the high amount of sclerotia produced, which guarantees its survival in the soil for years leading to significant yield losses. Alternative techniques to control the pathogen have been researched, including homeopathy. The present work aimed to evaluate the in vitro antifungal effect of homeopathic medicines on S. sclerotiorum mycelial growth. Homeopathic medicines Sulphur, fungal sclerotium Nosode and Calcarea carbonica, in 30CH, 200CH and 1000CH dynamizations were tested. Assays were carried out in a completely randomized design, with four repetitions. Experiments were performed through the addition of homeopathic medicines on the surface of plates containing culture medium, followed by insertion of a disc containing fungus mycelia and incubation. Control treatment received no homeopathic medicine. The mycelial progression was monitored by seven halo diameter measurements during experiment period. All homeopathic medicines tested and their dynamizations were able to inhibit partially the development of the fungus. Calcarea carbonica at the dynamization of 1000 CH showed the best inhibitory effect on S. sclerotiorum, which under its effect produced a mycelial halo 40% smaller than the control treatment.
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9

Glass, Phillip J., and William L. Gannon. "Description of M. uropataginalis (a new muscle), with additional comments from a microscopy study of the uropatagium of the fringed myotis (Myotis thysanodes)." Canadian Journal of Zoology 72, no. 10 (1994): 1752–54. http://dx.doi.org/10.1139/z94-236.

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We describe a bundle of skeletal muscle extending between the last caudal vertebrae and the calcar in the distal uropatagium of the fringed myotis, Myotis thysanodes, and we name this muscle M. uropataginalis. This discovery may elucidate the function of the fringe hairs of M. thysanodes and other bats with hairs projecting distally and ventrally along the trailing edge of the uropatagium.
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10

Saul, Dominik, Tobias Himmelmann, and Klaus Dresing. "Humeral Tip-apex-distance as a Prognostic Marker for Proximal Humeral Fractures in 203 Patients." Open Orthopaedics Journal 11, no. 1 (2017): 297–308. http://dx.doi.org/10.2174/1874325001711010297.

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Background:Humeral head fractures and their postoperative outcome remain a challenging problem in surgical daily routine. Predictive factors for loss of fixation are rare.Objective:Determination of predictive factors for the failure of osteosynthesis with the loss of fixation or migration of screws in humeral head fractures.Method:From 1995 to 2011, 408 patients with proximal humeral fractures [mean age 66.6 years, 50.9-82.3 years] and osteosynthesis were analyzed. Two hundred and three received open reduction internal fixation (ORIF) with the PHILOS®plate. The non-locking plate was used in 80, the locking plate in 16 and humeral head prosthesis in 26 patients, in addition to 23 patients undergoing other procedures. Intraoperative reduction that achieved an anatomical alignment of the medial aspect of the humerus (humeral calcar) was assessed in 94 patients by postoperative X-ray analysis. The loss of fixation was evaluated by a follow-up of three to five X-rays and measurement of the humeral tip-apex-distance (HTAD).Results:For stable fixed fractures with an intact calcar, percentual HTAD was significantly higher than for unstable fixed fractures (p=0.04). Morbidity, such as hypertension, orthopedic operations or diabetes, strongly influenced the HTAD, while postoperative passive motion treatment modestly affected the HTAD over time.Conclusion:The anatomic reconstruction of the calcar, leading to stable fixation of humeral head fractures, can significantly prevent an overproportioned decrease in the HTAD in postoperative X-rays and seems to be vital in multimorbid patients. Measurement of the HTAD over time delivers a tool for early detection of secondary loss of fixation.
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