Titre : Substances humiques

Substances humiques : Questions médicales fréquentes

Termes MeSH sélectionnés :

Surgery, Computer-Assisted
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symptômes indiquent un manque de substances humiques dans le sol ?\nLes substances humiques affectent-elles la qualité de l'eau ?\nComment les substances humiques influencent-elles la santé des sols ?\nQuels effets les substances humiques ont-elles sur les cultures ?\nLes substances humiques peuvent-elles causer des symptômes chez l'homme ?", "url": "https://questionsmedicales.fr/mesh/D006812?mesh_terms=Surgery,+Computer-Assisted&page=2#section-symptômes" }, { "@type": "MedicalWebPage", "name": "Prévention", "headline": "Prévention sur Substances humiques", "description": "Comment prévenir la dégradation des substances humiques dans le sol ?\nQuelles pratiques agricoles favorisent les substances humiques ?\nComment la gestion de l'eau influence-t-elle les substances humiques ?\nLes substances humiques peuvent-elles être protégées par des pratiques de conservation ?\nQuel rôle joue la biodiversité dans la préservation des substances humiques ?", "url": 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affecte-t-elle l'environnement ?\nLes substances humiques peuvent-elles causer des problèmes de santé ?\nQuels effets les substances humiques ont-elles sur les écosystèmes aquatiques ?", "url": "https://questionsmedicales.fr/mesh/D006812?mesh_terms=Surgery,+Computer-Assisted&page=2#section-complications" }, { "@type": "MedicalWebPage", "name": "Facteurs de risque", "headline": "Facteurs de risque sur Substances humiques", "description": "Quels facteurs augmentent la dégradation des substances humiques ?\nComment le changement climatique affecte-t-il les substances humiques ?\nQuels types de sols sont plus susceptibles de perdre des substances humiques ?\nL'utilisation de pesticides influence-t-elle les substances humiques ?\nQuels impacts des pratiques agricoles intensives sur les substances humiques ?", "url": "https://questionsmedicales.fr/mesh/D006812?mesh_terms=Surgery,+Computer-Assisted&page=2#section-facteurs de risque" } ] }, { "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Comment diagnostiquer une carence en substances humiques ?", "position": 1, "acceptedAnswer": { "@type": "Answer", "text": "Le diagnostic repose sur l'analyse des sols et des échantillons d'eau pour évaluer leur teneur en humiques." } }, { "@type": "Question", "name": "Quels tests sont utilisés pour mesurer les substances humiques ?", "position": 2, "acceptedAnswer": { "@type": "Answer", "text": "Des tests chimiques et spectroscopiques, comme la spectroscopie UV-Vis, sont couramment utilisés." } }, { "@type": "Question", "name": "Les substances humiques peuvent-elles être mesurées dans le sang ?", "position": 3, "acceptedAnswer": { "@type": "Answer", "text": "Non, elles sont principalement présentes dans le sol et l'eau, pas dans le sang humain." } }, { "@type": "Question", "name": "Quels indicateurs de santé des sols sont liés aux substances humiques ?", "position": 4, "acceptedAnswer": { "@type": "Answer", "text": "La biodiversité microbienne et la capacité de rétention d'eau sont des indicateurs clés." } }, { "@type": "Question", "name": "Comment évaluer l'impact des substances humiques sur la santé des plantes ?", "position": 5, "acceptedAnswer": { "@type": "Answer", "text": "On évalue la croissance des plantes et leur résistance aux maladies en fonction de leur teneur en humiques." } }, { "@type": "Question", "name": "Quels symptômes indiquent un manque de substances humiques dans le sol ?", "position": 6, "acceptedAnswer": { "@type": "Answer", "text": "Des symptômes incluent une croissance réduite des plantes et une mauvaise rétention d'eau." } }, { "@type": "Question", "name": "Les substances humiques affectent-elles la qualité de l'eau ?", "position": 7, "acceptedAnswer": { "@type": "Answer", "text": "Oui, elles améliorent la qualité de l'eau en réduisant la toxicité et en favorisant la filtration." } }, { "@type": "Question", "name": "Comment les substances humiques influencent-elles la santé des sols ?", "position": 8, "acceptedAnswer": { "@type": "Answer", "text": "Elles améliorent la structure du sol, augmentent la fertilité et favorisent la biodiversité." } }, { "@type": "Question", "name": "Quels effets les substances humiques ont-elles sur les cultures ?", "position": 9, "acceptedAnswer": { "@type": "Answer", "text": "Elles augmentent le rendement des cultures et améliorent leur résistance aux stress environnementaux." } }, { "@type": "Question", "name": "Les substances humiques peuvent-elles causer des symptômes chez l'homme ?", "position": 10, "acceptedAnswer": { "@type": "Answer", "text": "Non, elles ne sont pas toxiques pour l'homme et n'entraînent pas de symptômes directs." } }, { "@type": "Question", "name": "Comment prévenir la dégradation des substances humiques dans le sol ?", "position": 11, "acceptedAnswer": { "@type": "Answer", "text": "Pratiquer une agriculture durable et éviter l'érosion du sol aide à préserver les humiques." } }, { "@type": "Question", "name": "Quelles pratiques agricoles favorisent les substances humiques ?", "position": 12, "acceptedAnswer": { "@type": "Answer", "text": "La rotation des cultures et l'utilisation de cultures de couverture favorisent leur accumulation." } }, { "@type": "Question", "name": "Comment la gestion de l'eau influence-t-elle les substances humiques ?", "position": 13, "acceptedAnswer": { "@type": "Answer", "text": "Une gestion adéquate de l'eau prévient le lessivage des humiques et maintient leur concentration." } }, { "@type": "Question", "name": "Les substances humiques peuvent-elles être protégées par des pratiques de conservation ?", "position": 14, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les pratiques de conservation comme le paillage aident à maintenir leur niveau dans le sol." } }, { "@type": "Question", "name": "Quel rôle joue la biodiversité dans la préservation des substances humiques ?", "position": 15, "acceptedAnswer": { "@type": "Answer", "text": "Une biodiversité riche favorise la décomposition et la formation de substances humiques dans le sol." } }, { "@type": "Question", "name": "Comment améliorer la teneur en substances humiques du sol ?", "position": 16, "acceptedAnswer": { "@type": "Answer", "text": "L'ajout de compost, de fumier ou d'amendements organiques enrichit le sol en humiques." } }, { "@type": "Question", "name": "Quels produits contiennent des substances humiques ?", "position": 17, "acceptedAnswer": { "@type": "Answer", "text": "Des extraits de tourbe, de lignite et des produits à base de compost en contiennent." } }, { "@type": "Question", "name": "Les substances humiques peuvent-elles être utilisées en agriculture ?", "position": 18, "acceptedAnswer": { "@type": "Answer", "text": "Oui, elles sont utilisées comme amendements pour améliorer la fertilité et la structure du sol." } }, { "@type": "Question", "name": "Comment les substances humiques aident-elles à traiter les sols pollués ?", "position": 19, "acceptedAnswer": { "@type": "Answer", "text": "Elles peuvent immobiliser les contaminants et améliorer la dégradation des polluants." } }, { "@type": "Question", "name": "Les substances humiques sont-elles utilisées en médecine ?", "position": 20, "acceptedAnswer": { "@type": "Answer", "text": "Elles sont explorées pour leurs propriétés antioxydantes et anti-inflammatoires, mais pas encore validées." } }, { "@type": "Question", "name": "Quelles complications peuvent survenir avec une carence en substances humiques ?", "position": 21, "acceptedAnswer": { "@type": "Answer", "text": "Une carence peut entraîner une baisse de la fertilité du sol et des rendements agricoles." } }, { "@type": "Question", "name": "Les substances humiques peuvent-elles interagir avec des polluants ?", "position": 22, "acceptedAnswer": { "@type": "Answer", "text": "Oui, elles peuvent se lier à des polluants, réduisant leur biodisponibilité et leur toxicité." } }, { "@type": "Question", "name": "Comment une mauvaise gestion des substances humiques affecte-t-elle l'environnement ?", "position": 23, "acceptedAnswer": { "@type": "Answer", "text": "Elle peut entraîner une dégradation des sols, une perte de biodiversité et une pollution de l'eau." } }, { "@type": "Question", "name": "Les substances humiques peuvent-elles causer des problèmes de santé ?", "position": 24, "acceptedAnswer": { "@type": "Answer", "text": "Non, elles ne sont pas considérées comme nocives pour la santé humaine lorsqu'elles sont utilisées correctement." } }, { "@type": "Question", "name": "Quels effets les substances humiques ont-elles sur les écosystèmes aquatiques ?", "position": 25, "acceptedAnswer": { "@type": "Answer", "text": "Elles peuvent améliorer la qualité de l'eau et soutenir la vie aquatique en réduisant la toxicité." } }, { "@type": "Question", "name": "Quels facteurs augmentent la dégradation des substances humiques ?", "position": 26, "acceptedAnswer": { "@type": "Answer", "text": "L'érosion, la surexploitation des sols et l'utilisation excessive de produits chimiques sont des facteurs clés." } }, { "@type": "Question", "name": "Comment le changement climatique affecte-t-il les substances humiques ?", "position": 27, "acceptedAnswer": { "@type": "Answer", "text": "Le changement climatique peut modifier la décomposition de la matière organique, affectant les humiques." } }, { "@type": "Question", "name": "Quels types de sols sont plus susceptibles de perdre des substances humiques ?", "position": 28, "acceptedAnswer": { "@type": "Answer", "text": "Les sols sableux et ceux soumis à une forte érosion sont plus susceptibles de perdre des humiques." } }, { "@type": "Question", "name": "L'utilisation de pesticides influence-t-elle les substances humiques ?", "position": 29, "acceptedAnswer": { "@type": "Answer", "text": "Oui, l'utilisation excessive de pesticides peut nuire à la biodiversité et réduire les humiques." } }, { "@type": "Question", "name": "Quels impacts des pratiques agricoles intensives sur les substances humiques ?", "position": 30, "acceptedAnswer": { "@type": "Answer", "text": "Elles entraînent une dégradation du sol et une diminution des substances humiques, affectant la fertilité." } } ] } ] }

Sources (10000 au total)

The role of computer aided design/computer assisted manufacturing (CAD/CAM) and 3- dimensional printing in head and neck oncologic surgery: A review and future directions.

Microvascular free flap reconstruction has remained the standard of care in reconstruction of large tissue defects following ablative head and neck oncologic surgery, especially for bony structures. C...

The impact of cone beam computer tomography field of view on the precision of digital intra-oral scan registration for static computer-assisted implant surgery: A CBCT analysis.

Registration of intra-oral surface scans to cone beam computer tomography (CBCT) is critical in the digital workflow for static computer-aided implant surgery (sCAIS). This study aimed to assess the i... Cone beam computer tomography data and intra-oral scans from 20 patients were included. Small FoV CBCT's were created by digitally segmenting a large FoV into three sextants. Virtual implant planning ... Differences in 3D implant position based on the registration precision between small FoV and large FoV present at both the implant entry point (0.37 ± 0.25 mm vs 0.35 ± 0.23 mm, p = .482) and implant ... CBCT with a small FoV is accompanied by greater precision errors in intra-oral scan registration. However, when sufficient well-distributed teeth are visible in small FoV CBCT, the precision of digita...

Can computer-assisted implant surgery improve clinical outcomes and reduce the frequency and intensity of complications in implant dentistry? A critical review.

Computer-assisted implant surgery (CAIS), either static or dynamic, is well documented to significantly improve the accuracy of implant placement. Whether the increased accuracy leads to a correspondi...

Accuracy of implant placement with a combined use of static and dynamic computer-assisted implant surgery in single tooth space: A randomized controlled trial.

To compare implant accuracy of combined static and dynamic (SD) computer-assisted implant surgery (CAIS) with static (S), dynamic (D) CAIS, and freehand surgery (FH) for single implant placement.... One hundred and twenty patients were randomized into four groups. Implants were placed using both stereolithographic surgical guide and dynamic navigation in the SD group, stereolithographic surgical ... Significant differences were found among the four groups (p < .001): The 3D deviation at the platform (mm) of SD, S, D, and FH groups was 0.62 ± 0.50, 1.06 ± 0.67, 1.02 ± 0.45, and 1.48 ± 0.68, respec... The use of combined static and dynamic CAIS provided significantly higher accuracy than the two alone and freehand surgery for single implant placement....

The Cost Utility of Virtual Surgical Planning and Computer-Assisted Design/Computer-Assisted Manufacturing in Mandible Reconstruction Using the Free Fibula Osteocutaneous Flap.

The use of virtual surgical planning and computer-assisted design and computer-assisted manufacturing (CAD/CAM) has become widespread for mandible reconstruction with the free fibula flap. However, th... The authors used a decision tree model to evaluate the cost utility, from the perspective of a hospital or insurer, of mandible reconstruction using CAD/CAM relative to the conventional (non-CAD/CAM) ... Although CAD/CAM reconstruction had a higher expected cost compared with the conventional technique ($36,487 vs. $26,086), the expected QALYs were higher (17.25 vs. 16.93), resulting in an ICUR = $32,... This cost utility analysis suggests that mandible reconstruction with the free fibula osteocutaneous flap using CAD/CAM is more cost effective than the conventional technique....

Influence of drilling sequence and guide-hole design on the accuracy of static computer-assisted implant surgery in extraction sockets and healed sites-An in vitro investigation.

To evaluate the effect of drilling sequence, guide-hole design, and alveolar ridge morphology on the accuracy of implant placement via static computer-assisted implant surgery (sCAIS).... Standardized maxillary bone models including single-tooth gaps with fresh extraction sockets or healed alveolar ridge morphologies were evaluated in this study. Implants were placed using different dr... Based on a sample size analysis, a total of 72 implants were included in this study. Significantly higher implant position accuracy was found at healed sites compared to extraction sockets and in SL c... Implant placement via sCAIS resulted in higher accuracy in healed sites than extraction sockets, when using SL compared to MS guides, and tended to be more accurate when using CDS compared to MDS. The...

Software-related recalls in computer-assisted hip and knee arthroplasty.

Computer-assisted arthroplasty supports the surgeons in planning, simulating, and performing the replacement procedure, using robotic or navigation technologies. However, the safety of the technology ... The Medical Device Recalls database was investigated about software-related recalls in computer-assisted hip and knee arthroplasty surgery, between 2017 and 2022. The incidence of the software-related... Eighteen recall numbers could be identified (1.6%), corresponding to 11 recall events. A total of 4634 units were involved. The FDA determined root causes were: software design (66.6%), design change ... Software-related recalls in computer-assisted hip and knee arthroplasty were quite uncommon among all the recalls, deemed non-life threatening and usually due to software design errors. The main actio...