Titre : Cellules du mésophylle

Cellules du mésophylle : Questions médicales fréquentes

Termes MeSH sélectionnés :

Observer Variation
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de lumière affecte-t-il le mésophylle ?\nQuels symptômes de carence en nutriments affectent le mésophylle ?", "url": "https://questionsmedicales.fr/mesh/D058503?mesh_terms=Observer+Variation&page=3#section-symptômes" }, { "@type": "MedicalWebPage", "name": "Prévention", "headline": "Prévention sur Cellules du mésophylle", "description": "Comment prévenir les maladies du mésophylle ?\nQuelles pratiques culturales protègent le mésophylle ?\nComment éviter le stress hydrique pour le mésophylle ?\nQuels facteurs environnementaux influencent le mésophylle ?\nComment surveiller la santé du mésophylle ?", "url": "https://questionsmedicales.fr/mesh/D058503?mesh_terms=Observer+Variation&page=3#section-prévention" }, { "@type": "MedicalWebPage", "name": "Traitements", "headline": "Traitements sur Cellules du mésophylle", "description": "Comment traiter un mésophylle endommagé ?\nQuels traitements pour les maladies du mésophylle ?\nComment améliorer la photosynthèse dans le mésophylle ?\nQuels engrais favorisent la santé du mésophylle ?\nComment prévenir les dommages au mésophylle ?", "url": "https://questionsmedicales.fr/mesh/D058503?mesh_terms=Observer+Variation&page=3#section-traitements" }, { "@type": "MedicalWebPage", "name": "Complications", "headline": "Complications sur Cellules du mésophylle", "description": "Quelles complications peuvent survenir avec un mésophylle endommagé ?\nComment les maladies du mésophylle affectent-elles la plante ?\nQuels impacts d'un mésophylle non fonctionnel ?\nQuelles conséquences d'une carence en nutriments sur le mésophylle ?\nComment un stress environnemental affecte-t-il le mésophylle ?", "url": "https://questionsmedicales.fr/mesh/D058503?mesh_terms=Observer+Variation&page=3#section-complications" }, { "@type": "MedicalWebPage", "name": "Facteurs de risque", "headline": "Facteurs de risque sur Cellules du mésophylle", "description": "Quels facteurs augmentent le risque de maladies du mésophylle ?\nComment le type de sol influence-t-il le mésophylle ?\nQuels effets des conditions climatiques sur le mésophylle ?\nComment la pollution affecte-t-elle le mésophylle ?\nQuels rôles des parasites dans les maladies du mésophylle ?", "url": "https://questionsmedicales.fr/mesh/D058503?mesh_terms=Observer+Variation&page=3#section-facteurs de risque" } ] }, { "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Comment identifier les cellules du mésophylle ?", "position": 1, "acceptedAnswer": { "@type": "Answer", "text": "L'identification se fait par microscopie, observant leur structure et leur disposition." } }, { "@type": "Question", "name": "Quels tests sont utilisés pour étudier le mésophylle ?", "position": 2, "acceptedAnswer": { "@type": "Answer", "text": "Des tests histologiques et des analyses de chlorophylle sont couramment utilisés." } }, { "@type": "Question", "name": "Quels signes indiquent un dysfonctionnement du mésophylle ?", "position": 3, "acceptedAnswer": { "@type": "Answer", "text": "Un jaunissement des feuilles et une réduction de la photosynthèse peuvent indiquer des problèmes." } }, { "@type": "Question", "name": "Peut-on évaluer la santé du mésophylle ?", "position": 4, "acceptedAnswer": { "@type": "Answer", "text": "Oui, par des mesures de la photosynthèse et des analyses de pigments." } }, { "@type": "Question", "name": "Quels outils permettent d'analyser le mésophylle ?", "position": 5, "acceptedAnswer": { "@type": "Answer", "text": "Des spectrophotomètres et des microscopes électroniques sont utilisés pour l'analyse." } }, { "@type": "Question", "name": "Quels symptômes indiquent un problème de mésophylle ?", "position": 6, "acceptedAnswer": { "@type": "Answer", "text": "Des feuilles jaunes, flétries ou présentant des taches peuvent signaler un problème." } }, { "@type": "Question", "name": "Comment le stress hydrique affecte-t-il le mésophylle ?", "position": 7, "acceptedAnswer": { "@type": "Answer", "text": "Le stress hydrique peut entraîner une réduction de la photosynthèse et des dommages cellulaires." } }, { "@type": "Question", "name": "Quels effets des maladies sur le mésophylle ?", "position": 8, "acceptedAnswer": { "@type": "Answer", "text": "Les maladies peuvent provoquer des décolorations et des nécroses dans le mésophylle." } }, { "@type": "Question", "name": "Le manque de lumière affecte-t-il le mésophylle ?", "position": 9, "acceptedAnswer": { "@type": "Answer", "text": "Oui, un manque de lumière réduit la photosynthèse et peut entraîner un affaiblissement des cellules." } }, { "@type": "Question", "name": "Quels symptômes de carence en nutriments affectent le mésophylle ?", "position": 10, "acceptedAnswer": { "@type": "Answer", "text": "Des carences en azote ou en magnésium peuvent provoquer un jaunissement des feuilles." } }, { "@type": "Question", "name": "Comment prévenir les maladies du mésophylle ?", "position": 11, "acceptedAnswer": { "@type": "Answer", "text": "Maintenir une bonne circulation d'air et éviter l'humidité excessive aide à prévenir les maladies." } }, { "@type": "Question", "name": "Quelles pratiques culturales protègent le mésophylle ?", "position": 12, "acceptedAnswer": { "@type": "Answer", "text": "La rotation des cultures et l'utilisation de variétés résistantes sont des pratiques efficaces." } }, { "@type": "Question", "name": "Comment éviter le stress hydrique pour le mésophylle ?", "position": 13, "acceptedAnswer": { "@type": "Answer", "text": "Un arrosage régulier et un paillage peuvent aider à maintenir l'humidité du sol." } }, { "@type": "Question", "name": "Quels facteurs environnementaux influencent le mésophylle ?", "position": 14, "acceptedAnswer": { "@type": "Answer", "text": "La température, l'humidité et la lumière sont des facteurs clés influençant le mésophylle." } }, { "@type": "Question", "name": "Comment surveiller la santé du mésophylle ?", "position": 15, "acceptedAnswer": { "@type": "Answer", "text": "Des inspections régulières des feuilles et des tests de sol permettent de surveiller la santé." } }, { "@type": "Question", "name": "Comment traiter un mésophylle endommagé ?", "position": 16, "acceptedAnswer": { "@type": "Answer", "text": "Améliorer les conditions de culture et appliquer des engrais peut aider à la récupération." } }, { "@type": "Question", "name": "Quels traitements pour les maladies du mésophylle ?", "position": 17, "acceptedAnswer": { "@type": "Answer", "text": "Des fongicides ou des insecticides peuvent être utilisés selon le type de maladie." } }, { "@type": "Question", "name": "Comment améliorer la photosynthèse dans le mésophylle ?", "position": 18, "acceptedAnswer": { "@type": "Answer", "text": "Optimiser l'éclairage et l'humidité peut améliorer l'efficacité de la photosynthèse." } }, { "@type": "Question", "name": "Quels engrais favorisent la santé du mésophylle ?", "position": 19, "acceptedAnswer": { "@type": "Answer", "text": "Les engrais riches en azote et en potassium sont bénéfiques pour le mésophylle." } }, { "@type": "Question", "name": "Comment prévenir les dommages au mésophylle ?", "position": 20, "acceptedAnswer": { "@type": "Answer", "text": "Assurer un arrosage adéquat et un bon éclairage aide à prévenir les dommages." } }, { "@type": "Question", "name": "Quelles complications peuvent survenir avec un mésophylle endommagé ?", "position": 21, "acceptedAnswer": { "@type": "Answer", "text": "Un mésophylle endommagé peut entraîner une croissance réduite et une faible production de fruits." } }, { "@type": "Question", "name": "Comment les maladies du mésophylle affectent-elles la plante ?", "position": 22, "acceptedAnswer": { "@type": "Answer", "text": "Elles peuvent provoquer un affaiblissement général et une susceptibilité accrue aux autres stress." } }, { "@type": "Question", "name": "Quels impacts d'un mésophylle non fonctionnel ?", "position": 23, "acceptedAnswer": { "@type": "Answer", "text": "Un mésophylle non fonctionnel entraîne une photosynthèse inefficace et un appauvrissement des nutriments." } }, { "@type": "Question", "name": "Quelles conséquences d'une carence en nutriments sur le mésophylle ?", "position": 24, "acceptedAnswer": { "@type": "Answer", "text": "Des carences peuvent entraîner des décolorations, une croissance ralentie et des maladies." } }, { "@type": "Question", "name": "Comment un stress environnemental affecte-t-il le mésophylle ?", "position": 25, "acceptedAnswer": { "@type": "Answer", "text": "Le stress environnemental peut provoquer des dommages cellulaires et réduire la photosynthèse." } }, { "@type": "Question", "name": "Quels facteurs augmentent le risque de maladies du mésophylle ?", "position": 26, "acceptedAnswer": { "@type": "Answer", "text": "L'humidité excessive et le manque de circulation d'air augmentent le risque de maladies." } }, { "@type": "Question", "name": "Comment le type de sol influence-t-il le mésophylle ?", "position": 27, "acceptedAnswer": { "@type": "Answer", "text": "Un sol pauvre en nutriments peut affecter la santé et la fonction des cellules du mésophylle." } }, { "@type": "Question", "name": "Quels effets des conditions climatiques sur le mésophylle ?", "position": 28, "acceptedAnswer": { "@type": "Answer", "text": "Des conditions climatiques extrêmes peuvent provoquer un stress et endommager le mésophylle." } }, { "@type": "Question", "name": "Comment la pollution affecte-t-elle le mésophylle ?", "position": 29, "acceptedAnswer": { "@type": "Answer", "text": "La pollution de l'air peut réduire la photosynthèse et nuire à la santé des cellules du mésophylle." } }, { "@type": "Question", "name": "Quels rôles des parasites dans les maladies du mésophylle ?", "position": 30, "acceptedAnswer": { "@type": "Answer", "text": "Les parasites peuvent affaiblir les cellules du mésophylle et favoriser l'apparition de maladies." } } ] } ] }

Sources (10000 au total)

A Novel Method to Improve Inter-Clinician Variation in the Diagnosis of Retinopathy of Prematurity Using Machine Learning.

Inter-clinician variation could cause uncertainty in disease management. This is reported to be high in Retinopathy of Prematurity (ROP), a potentially blinding retinal disease affecting premature inf... An anonymized survey of ROP images was administered to the expert(s) and the trainee(s) using a study-designed user interface. The results were analyzed for repeatability as well as to identify the le... Correlation and disagreement between the expert and the trainees were visualized using the Dipstick™ diagram. Intra-clinician repeatability and reclassification statistics were assessed for all. The r... This novel, automated algorithm quantifies the differences using machine learning techniques. This will help audit the training process by objectively measuring differences between experts and trainee... Training for image-based ROP diagnosis can be more objectively performed using this novel, machine learning-based automated image analyzer and classifier....

Inter-observer variability of expert-derived morphologic risk predictors in aortic dissection.

Establishing the reproducibility of expert-derived measurements on CTA exams of aortic dissection is clinically important and paramount for ground-truth determination for machine learning.... Four independent observers retrospectively evaluated CTA exams of 72 patients with uncomplicated Stanford type B aortic dissection and assessed the reproducibility of a recently proposed combination o... Pre-training ICCs of the four morphologic features ranged from 0.04 (-0.05 to 0.13) to 0.68 (0.49-0.81) between observer 1 and observers 2-4 and from 0.50 (0.32-0.69) to 0.89 (0.78-0.95) between obser... Manual morphologic feature measurements on CTA images can be optimized resulting in improved inter-observer reliability. This is essential for robust ground-truth determination for machine learning mo... • Clinical fashion manual measurements of aortic CTA imaging features showed poor inter-observer reproducibility. • A standardized workflow with standardized training resulted in substantial improveme...

Inter-observer Variability of Clinical Activity Score: Assessments in Patients With Thyroid Eye Disease.

Thyroid eye disease (TED) can be difficult to manage. The range of available treatments is expanding rapidly; however, cost is a concern and some patients do not respond. The Clinical Activity Score (... Prospective reliability analysis.... Nine patients with a spectrum of clinical features of TED were assessed by 6 experienced observers on the same day. Agreement among the observers was analyzed using the Krippendorff alpha.... The Krippendorff alpha for the total CAS was 0.532 (95% CI = 0.199-0.665), whereas alpha values for the individual components of the CAS varied between 0.171 (CI = 0.000-0.334) for lid redness and 0.6... This study has shown unreliable inter-observer variability in total CAS and most individual CAS components, thus highlighting the need for improving the performance of the CAS or seeking other methods...

Evaluation of validity and reliability of video analysis and live observations to assess trauma team performance.

A trauma resuscitation is dynamic and complex process in which failures could lead to serious adverse events. In several trauma centers, evaluation of trauma resuscitation is part of a hospital's qual... In this prospective observational study, validity was assessed by comparing the observed adherence to 28 advanced trauma life support (ATLS) guideline related tasks by video analysis to life observati... Eleven simulated and thirteen real-life resuscitations were assessed. Overall, the percentage of observed ATLS related tasks performed during simulated resuscitations was 10.4% (P < 0.001) higher when... Video analysis of trauma resuscitations may be more valid and reliable compared to evaluation by live observers. These outcomes may guide the debate to justify video review instead of live observation...

Intra- and inter-observer agreement in distal radius fracture dislocation measurement of casting position.

Most displaced distal radius fractures (DRF) are treated nonoperatively, with reduction and immobilization in a cast. Studies assessing intra- or inter-observer agreement on radiologic measurements of... Our study is based on the Kuopio Osteoporosis Risk Factor and Prevention (OSTPRE) study. All detected DRFs during the OSTPRE follow-up were retrieved and based on sample size calculations 50 fractures... For radial inclination, radial shortening, and dorsal/volar tilt, intra- and inter-observer correlations were high (CCC > 0.76). In addition, measurements of wrist angle in a splint had high correlati... Intra- and inter-observer repeatability of casting position of radial inclination, radial shortening, and dorsal/volar tilt were high whereas intra-articular gap and step had poor correlations....

Inter-observer agreement in grading severity of diabetic retinopathy in wide-field fundus photographs.

To examine the inter-observer agreement between two retina specialists in grading diabetic retinopathy (DR) severity in ultra-wide-field fundus photographs.... Two hundred and seventy patients with diabetes, who visited the vitreoretinal specialty at a tertiary eye care hospital, with or without DR underwent comprehensive ophthalmic examination, dilated reti... The two graders showed agreement in 229/270 images (84.8%) and disagreement in 41/270 images (15.2%). The unweighted kappa for agreement between graders was k = 0.715, SE = 0.037 and the weighted kapp... The impact of disagreement noted between observers in grading DR on UWF fundus photographs should be considered when utilizing UWF system in clinical studies....

Comparison of supervised-learning approaches for designing a channelized observer for image quality assessment in CT.

The current paradigm for evaluating computed tomography (CT) system performance relies on a task-based approach. As the Hotelling observer (HO) provides an upper bound of observer performances in spec... Here we investigated the efficiency of a supervised ML-algorithm used to design a CO for predicting the performance of unconstrained HO. The ML-algorithm was applied either (1) in the estimator for di... A channelized support vector machine (CSVM) was employed and compared against the CHO in terms of ability to predict HO performances. Both the CSVM and the CHO were estimated with channels derived fro... The CSVM outperformed the CHO for all types of channels and regularization strategies. Furthermore, even though both COs generalized well to images reconstructed with the same regularization strategy ... These results argue for introducing the supervised-learning paradigm in the detector function rather than in the operator of the channels when designing a CO to provide an accurate estimate of HO perf...

Impact of metal artifact reduction algorithm on gross tumor volume delineation in tonsillar cancer: reducing the interobserver variation.

Patients with tonsillar cancer (TC) often have dental fillings that can significantly degrade the quality of computed tomography (CT) simulator images due to metal artifacts. We evaluated whether the ... Eighteen patients with TC with dental fillings were enrolled in this study. Contrast-enhanced CT simulator images were reconstructed using the conventional (CT... GTV... The use of the MAR algorithm led to the delineation of smaller GTVs and reduced interobserver variations in delineating GTV of the primary tumors in patients with TC....