Thematische Bibliographien / Methodology 3A

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Auswahl der wissenschaftlichen Literatur zum Thema „Methodology 3A“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 13. Februar 2022

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Zeitschriftenartikel zum Thema "Methodology 3A"

Sayeed-Desta, Naheed, Ajay Babu Pazhayattil, Jordan Collins, Shu Chen, Marzena Ingram und Jana Spes. „Assessment Methodology for Process Validation Lifecycle Stage 3A“. AAPS PharmSciTech 18, Nr. 5 (06.10.2016): 1881–86. http://dx.doi.org/10.1208/s12249-016-0641-9.

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Çiçek, Ekrem, Corneliu Cojocaru, Grazyna Zakrzewska-Trznadel, Marian Harasimowicz und Agnieszka Miskiewicz. „Response surface methodology for the modelling of85Sr adsorption on zeolite 3A and pumice“. Environmental Technology 33, Nr. 1 (Januar 2012): 51–59. http://dx.doi.org/10.1080/09593330.2010.549514.

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Fadda, Ahmed, Ezz Eldeen Kandeel und Eman El-Gendy. „Synthesis and antimicrobial evaluation of some new hydrazo, dihydropyridazinyl and triazolyl derivatives containing indole nucleus“. Pigment & Resin Technology 46, Nr. 2 (06.03.2017): 122–30. http://dx.doi.org/10.1108/prt-11-2015-0118.

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Purpose The aim of this paper is synthesis of some new hydrazo, dihydropyridazinyl and triazolyl derivatives containing indole nucleus and their antimicrobial evaluation. Design/methodology/approach Treatment of 3-(1H-indol-3-yl)-3-oxopropanenitrile (1) with different aryl diazonium salts 2a-j gave the corresponding arylazohydrazone derivatives 3a-j. The azo derivatives 3d and 3e were used as the key intermediate for the synthesis of some new diazines 5d, e and triazoles 7d, e. The newly synthesized compounds were characterized by electronic absorption properties – IR, 1HNMR and MS studies – and screened for their biological evaluation. Compounds 3a-j, 5d, e and 7d, e showed promising results as antimicrobial agents. Findings Compounds 3a-j, 5d, e and 7d, e showed promising results as antimicrobial agents. Originality/value No details regarding the synthesis of such dyes are reported before in the literature.

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Kamal, Mustafa, Arsalan Jamil Raja, Tanveer Ahmed, Mashhood Ali und Faisal Rasheed. „Efficacy of Sofosbuvir Plus Ribavirin with and without Pegylated Interferon-Α in Patients with HCV Genotype 3A Infection“. Pakistan Journal of Medical and Health Sciences 15, Nr. 7 (30.07.2021): 2272–74. http://dx.doi.org/10.53350/pjmhs211572272.

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Background: Hepatitis C virus (HCV) infection is a serious problem in low and middle income countries including Pakistan. Objective: To compare the efficacy of combination therapy, Sofosbuvir plus Ribavirin with and without Pegylated Interferon-α in HCV genotype 3a infected patients. Study Design: Randomized control trial Place and Duration: Department of Gastroenterology, Pakistan Institute of Medical Sciences (PIMS), Islamabad, during from 16th April 2017 to 15th October 2017. Methodology: One hundred and fifty four HCV infected patients with genotype 3a were included in this study. Detailed demographics were recorded after taking informed written consent. Patients were divided in two groups (A and B) randomly, Group A was offered with Sofosbuvir plus Ribavirin with Pegylated Interferon-α for 12 weeks and Group B was offered with Sofosbuvir plus Ribavirin for 24 weeks. The sustained virological response (SVR) after 12 weeks of therapy was compared between the study groups. Results: The frequency of SVR12 was comparatively higher in patients treated with Sofosbuvir plus Ribavirin with Pegylated Interferon-α (94.8%) than Sofosbuvir plus Ribavirin alone (84.4%) with similar trends in gender and age groups. Conclusion: The combination therapy Sofosbuvir plus Ribavirin with Pegylated Interferon-α had higher eradication rate against HCV genotype 3a in our local setting. Key Words: HCV, genotype 3a, Sofosbuvir, Ribavirin, Pegylated Interferon-α, SVR12

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Zhong, Yu-Jie, Jian-Hong Liao, Tzu-Hao Chiu, Yuh-Sheng Wen und C. W. Liu. „A New Synthetic Methodology in the Preparation of Bimetallic Chalcogenide Clusters via Cluster-to-Cluster Transformations“. Molecules 26, Nr. 17 (05.09.2021): 5391. http://dx.doi.org/10.3390/molecules26175391.

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A decanuclear silver chalcogenide cluster, [Ag10(Se){Se2P(OiPr)2}8] (2) was isolated from a hydride-encapsulated silver diisopropyl diselenophosphates, [Ag7(H){Se2P(OiPr)2}6], under thermal condition. The time-dependent NMR spectroscopy showed that 2 was generated at the first three hours and the hydrido silver cluster was completely consumed after thirty-six hours. This method illustrated as cluster-to-cluster transformations can be applied to prepare selenide-centered decanuclear bimetallic clusters, [CuxAg10-x(Se){Se2P(OiPr)2}8] (x = 0–7, 3), via heating [CuxAg7−x(H){Se2P(OiPr)2}6] (x = 1–6) at 60 °C. Compositions of 3 were accurately confirmed by the ESI mass spectrometry. While the crystal 2 revealed two un-identical [Ag10(Se){Se2P(OiPr)2}8] structures in the asymmetric unit, a co-crystal of [Cu3Ag7(Se){Se2P(OiPr)2}8]0.6[Cu4Ag6(Se){Se2P(OiPr)2}8]0.4 ([3a]0.6[3b]0.4) was eventually characterized by single-crystal X-ray diffraction. Even though compositions of 2, [3a]0.6[3b]0.4 and the previous published [Ag10(Se){Se2P(OEt)2}8] (1) are quite similar (10 metals, 1 Se2−, 8 ligands), their metal core arrangements are completely different. These results show that different synthetic methods by using different starting reagents can affect the structure of the resulting products, leading to polymorphism.

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Aljohani, Ghadah, Musa Said, Dieter Lentz, Norazah Basar, Arwa Albar, Shaya Alraqa und Adeeb Ali. „Microwave-Assisted Synthesis of Mono- and Disubstituted 4-Hydroxyacetophenone Derivatives via Mannich Reaction: Synthesis, XRD and HS-Analysis“. Molecules 24, Nr. 3 (07.02.2019): 590. http://dx.doi.org/10.3390/molecules24030590.

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An efficient microwave-assisted one-step synthetic route toward Mannich bases is developed from 4-hydroxyacetophenone and different secondary amines in quantitative yields, via a regioselective substitution reaction. The reaction takes a short time and is non-catalyzed and reproducible on a gram scale. The environmentally benign methodology provides a novel alternative, to the conventional methodologies, for the synthesis of mono- and disubstituted Mannich bases of 4-hydroxyacetophenone. All compounds were well-characterized by FT-IR, 1H NMR, 13C NMR, and mass spectrometry. The structures of 1-{4-hydroxy-3-[(morpholin-4-yl)methyl]phenyl}ethan-1-one (2a) and 1-{4-hydroxy-3-[(pyrrolidin-1-yl)methyl]phenyl}ethan-1-one (3a) were determined by single crystal X-ray crystallography. Compound 2a and 3a crystallize in monoclinic, P21/n, and orthorhombic, Pbca, respectively. The most characteristic features of the molecular structure of 2a is that the morpholine fragment adopts a chair conformation with strong intramolecular hydrogen bonding. Compound 3a exhibits intermolecular hydrogen bonding, too. Furthermore, the computed Hirshfeld surface analysis confirms H-bonds and π–π stack interactions obtained by XRD packing analyses.

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Mishra, Bhavesh Kumar, Uday Narayan Yadav, Saroj Khatiwada, Man Kumar Tamang, Shivir Dahal und Yi-Ping Li. „Hepatitis C virus genotype and its correlation with viral load in patients from Kathmandu, Nepal“. Journal of Infection in Developing Countries 14, Nr. 12 (31.12.2020): 1470–74. http://dx.doi.org/10.3855/jidc.10391.

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Introduction: Knowledge about the distribution of hepatitis C virus (HCV) genotype and its correlation with viral load are important for the decision of treatment and the prediction of disease progression, however such information is very limited in Nepal. Here, we investigated the distribution of HCV genotypes and viral load for HCV-infected patients from Kathmandu, Nepal. Methodology: Ninety-six patients with HCV infection and not on antiviral therapy were enrolled from three different medical centers in Kathmandu valley, Nepal. Demographics were recorded and blood samples were collected. Plasma was separated and HCV RNA was extracted. Reverse transcriptase PCR (RT-PCR) was performed to measure the viral load, and virus genotype was determined. Results: Genotype 3a (n = 53, 55.2%) was the most prevalent, followed by 1b (n = 19, 19.8%), 1a (n = 18, 18.8%), 5a (n = 3, 3.1%), and mix types (n = 3, 3.1%). The median viral load for HCV genotype 1a was 770,942 IU/mL (IQR, 215,268-3,720,075), 1b was 700,000 IU/mL (IQR, 431,560-919,000), 3a was 1,060,000 IU/mL (IQR, 641,050-6,063,500), 5a was 673,400 IU/mL, and mixed was 6,428,000 IU/mL. A correlation between genotype and viral load was observed (p = 0.02), of which genotype 3a showed a high viral load. Conclusions: HCV genotypes 1a, 1b, 3a, and 5a were identified in Kathmandu, Nepal, and mixed genotype patients were observed in the patients studied. HCV genotype showed a correlation with viral load in patient plasma. This finding may contribute to the treatment and prevention of hepatitis C in Kathmandu, Nepal.

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Joshi, Dhruval J., Meesook Jun, Lijing Yang, Alan J. Lough und Hongbin Yan. „Further investigation on the nitration of BODIPY with cupric nitrate: crystal structures of 4,4-difluoro-1,3,5,7,8-pentamethyl-2-nitro-4-bora-3a,4a-diaza-s-indacene, 4,4-difluoro-3-nitro-8-phenyl-4-bora-3a,4a-diaza-s-indacene, and 3-chloro-6-ethyl-5,7,8-trimethyl-2-nitro-4,4-diphenyl-4-bora-3a,4a-diaza-s-indacene“. Acta Crystallographica Section E Crystallographic Communications 74, Nr. 2 (09.01.2018): 103–8. http://dx.doi.org/10.1107/s2056989017018564.

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The treatment of non-fully substituted 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) with cupric nitrate leads to the introduction of a nitro group at different positions of the BODIPY core, depending on the substitution pattern. This methodology complements the treatment of fully substituted BODIPY with cupric nitrate that was previously reported. The crystal structures of 4,4-difluoro-1,3,5,7,8-pentamethyl-2-nitro-4-bora-3a,4a-diaza-s-indacene, C14H16BF2N3O2 (5a) 4,4-difluoro-3-nitro-8-phenyl-4-bora-3a,4a-diaza-s-indacene, C15H10BF2N3O2 (5b) and 3-chloro-6-ethyl-5,7,8-trimethyl-2-nitro-4,4-diphenyl-4-bora-3a,4a-diaza-s-indacene, C26H25BClN3O2 (5d) are presented. In all three structures, the fused ring system is in a very flattened `V-shape', with dihedral angles between the two outer five membered rings of 8.12 (14), 6.67 (9) and 12.30 (18) Å for 5a, 5b and 5d, respectively. In each case, the central six-membered ring is in a flattened sofa conformation. In the crystal of 5a, molecules are linked by weak C—H...O and C—H...F hydrogen bonds forming sheets parallel to (10-1). In the crystal of 5b molecules are linked by weak C—H...O and C—H...F hydrogen bonds and π–π interactions forming sheets parallel to (001). In the crystal of 5d, weak C—H...O hydrogen bonds link molecules into chains along [001]. In compound 5d, the atoms of the nitro group were refined as disordered over two sets of sites with occupancies 0.618 (12) and 0.382 (12).

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Wallander, Michelle L., Katherine B. Geiersbach, Sheryl R. Tripp und Lester J. Layfield. „Comparison of Reverse Transcription-Polymerase Chain Reaction, Immunohistochemistry, and Fluorescence In Situ Hybridization Methodologies for Detection of Echinoderm Microtubule-Associated Proteinlike 4–Anaplastic Lymphoma Kinase Fusion–Positive Non–Small Cell Lung Carcinoma: Implications for Optimal Clinical Testing“. Archives of Pathology & Laboratory Medicine 136, Nr. 7 (01.07.2012): 796–803. http://dx.doi.org/10.5858/arpa.2011-0321-oa.

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Context.—Echinoderm microtubule–associated proteinlike 4–anaplastic lymphoma kinase (EML4-ALK) gene fusions are detected in 3% to 13% of non–small cell lung carcinomas. Accurate testing for detection of EML4-ALK fusions is essential for appropriate therapy selection. Objective.—To compare reverse transcription-polymerase chain reaction (RT-PCR), immunohistochemistry (IHC), and fluorescence in situ hybridization (FISH) methodologies for detection of EML4-ALK fusions. Design.—Forty-six pulmonary adenocarcinomas were selected with enrichment for wild-type epidermal growth factor receptor (EGFR) status (wild type, n = 42; mutant, n = 4). Specimens were tested by IHC (Dako; clone ALK1), FISH (Abbott Molecular; LSI ALK break apart), and RT-PCR (variants 1 and 3a/b). Results.—EML4-ALK variant 3a/b was detectable by RT-PCR, FISH, and IHC in 4% (2 of 46) of specimens. Complete agreement among FISH and IHC reviewers was obtained for variant 3a/b. No concordance existed among methodologies for the detection of EML4-ALK variant 1. The RT-PCR method detected variant 1 in 20% (9 of 46) of specimens. Agreement among FISH viewers was poor for variant 1 because only 11% (1/9) of specimens were scored as positive by all 3 viewers. The sensitivity of IHC for detection of variant 1 was also poor because only 1 of 9 samples (11%) was scored as positive. Overall, the frequency of EML4-ALK variants 1 and 3a/b was 24% (11 of 46) in adenocarcinomas enriched for wild-type EGFR status. One EML4-ALK variant 1 fusion was found to coexist with an EGFR exon 21 mutation. Conclusions.—The FISH interpretation demonstrated great variability among observers. The RT-PCR method was the most sensitive and least-subjective methodology for detection of EML4-ALK fusions.

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Zhang, Xuejiao, Yihong Hu, Chenzhong Jin und Weiguo Wu. „Extraction and Hypolipidemic Activity of Low Molecular Weight Polysaccharides Isolated from Rosa Laevigata Fruits“. BioMed Research International 2020 (22.10.2020): 1–20. http://dx.doi.org/10.1155/2020/2043785.

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Three novel low molecular weight polysaccharides (RLP-1a, RLP-2a, and RLP-3a) with 9004, 8761, and 7571 Da were first obtained by purifying the crude polysaccharides from the fruits of a traditional Chinese medicinal herb Rosae Laevigatae. The conditions for polysaccharides from the R. Laevigatae fruit (RLP) extraction were optimized by the response surface methodology, and the optimal conditions were as follows: extraction temperature, 93°C; extraction time, 2.8 h; water to raw material ratio, 22; extraction frequency, 3. Structural characterization showed that RLP-1a consisted of rhamnose, arabinose, xylose, glucose, and galactose with the ratio of 3.14 : 8.21 : 1 : 1.37 : 4.90, whereas RLP-2a was composed of rhamnose, mannose, glucose, and galactose with the ratio of 1.70 : 1 : 93.59 : 2.73, and RLP-3a was composed of rhamnose, arabinose, xylose, mannose, glucose, and galactose with the ratio of 6.04 : 26.51 : 2.05 : 1 : 3.17 : 31.77. The NMR analyses revealed that RLP-1a, RLP-2a, and RLP-3a contained 6, 4, and 6 types of glycosidic linkages, respectively. RLP-1a and RLP-3a exhibited distinct antioxidant abilities on the superoxide anions, 1,1-diphenyl-2-picrylhydrazyl (DPPH), and hydroxyl radicals in vitro. RLPs could decrease the serum lipid levels, elevate the serum high-density lipoprotein cholesterol levels, enhance the antioxidant enzymes levels, and upregulate of FADS2, ACOX3, and SCD-1 which involved in the lipid metabolic processes and oxidative stress in the high-fat diet-induced rats. These results suggested that RLPs ameliorated the high-fat diet- (HFD-) induced lipid metabolism disturbance in the rat liver through the peroxisome proliferator-activated receptor (PPAR) signaling pathway. Low molecular weight polysaccharides of RLP could be served as a novel potential functional food for improving hyperlipidemia and liver oxidative stress responses.

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Dissertationen zum Thema "Methodology 3A"

Šafránková, Martina. „3A analýza školní aktivity s důrazem na prvky projektové výuky“. Master's thesis, 2021. http://www.nusl.cz/ntk/nusl-446087.

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The thesis focuses on a school project on the topic of waste. The project is analysed and evaluated using the 3A methodology. The emphasis in the examination and evaluation of individual activities is placed primarily on the use of project elements and compliance with the principles of project-based learning. The content of the theoretical part deals with the chapter about project-based learning and the principles of this learning. This section also discusses the advantages and disadvantages of the method. Further, the work presents an analysis of the current curricular document from the perspective of project teaching and waste. The last part of the theory describes the characteristics of methodology 3A. The practical part deals with the description, analysis, evaluation, and design of convenient alterations of project activities. The thesis also contains a draft for other activities with project elements on the topic of waste, which can be included in the existing project. KEYWORDS Project-based learning, project, methodology 3A, waste, environmental education

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Řeháková, Anna. „Video jako prostředek pro zvýšení motivace a rozvoj dovedností studentů v didaktice biologie“. Master's thesis, 2016. http://www.nusl.cz/ntk/nusl-344993.

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This master's thesis refers to the use of video as a teaching tool in the subject Didactics of Biology. It comprises two parts, one theoretical and another practical. The theoretical part charts the didactical and practical subjects taught at the Faculty of Education, Charles University in Prague, and deals with the use of video for the professional development of teachers. For the practical part, 8 lesson observation videos were recorded and placed on a newly created website (www.didaktikabiologievidea.cz). The observation videos were submitted to an analysis based on the 3A method and were used afterwards during the courses on Didactics of Biology. A questionnaire was carried out among the students of the teaching profession to evaluate the benefits of the videos for them. The questionnaire surveyed the motivation for studying Didactics of Biology, as well as the impact that these observation videos had on the performance of the teaching profession and the improvement of the teaching abilities. All above stated goals were accomplished in this work. Key words: lesson observation videos, didactics of biology, 3A, methodology, teaching profession, motivation, teaching abilities

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Bücher zum Thema "Methodology 3A"

Slovenije, Statistični urad Republike, Hrsg. Prijava podatkov v pokojninsko in invalidsko ter zdravstveno zavarovanje, zavarovanje za starševsko varstvo, zavarovanje za primer brezposelnosti in o sklenitvi delovnega razmerja (M-1, M-2, M-1A, M-3, M-3A, M-DČ). Ljubljana: Statistični urad Republike Slovenije, 2004.

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Buchteile zum Thema "Methodology 3A"

Primignani, Massimo, Luca Carpinelli, Shiv K. Sarin und Patrick S. Kamatb. „Session 3A - Portal Hypertensive Gastropathy“. In Portal Hypertension III: Proceedings of the Third Baverno International Consensus Workshop on Definitions, Methodology and Therapeutic Strategies, 65–75. Oxford, UK: Blackwell Science Ltd, 2008. http://dx.doi.org/10.1002/9780470760154.ch5.

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Konferenzberichte zum Thema "Methodology 3A"

Stepanov, A., V. Fateev und V. Mileshin. „Study of Rotor Blades Vibration Behavior of Counter Rotating Fan Models“. In ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gt2014-26310.

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Three test campaigns were carried out at CIAM C-3A test facility (Turaevo, Russia) with the aim of investigating aerodynamic and acoustic performances of three counter rotating fan models under the European VITAL project [1–3]. The second fan configuration CRTF2a [2] differs from the reference fan configuration CRTF1 by thickened blades profiling designed for simulation the composite blades. The third version of counter rotating fan model CRTF2b [4] was manufactured according to “blisk” technology to simulate composite blades. Along with studies of aerodynamic and acoustic performances of fan models, the C-3A test facility provides an opportunity to investigate and estimate the rotor blades vibration behavior. The rotor blade as the most loaded fan component, experiences the impact of various types of flow disturbances leading to its resonance vibrations and sometimes creating conditions for initiation of flutter at rotor blade natural frequencies. This is the reason for extending the information content of the measurements, improvement the measurement tools and methodology. The contactless method of blade vibration measurements (tip-timing) was used on the basis of MIC-DPM equipment («Mera» Research and Production Enterprise, Russia) [5,6] in combination with a traditional technique of strain gauges installation for determination of counter rotating fan rotor blades vibration behavior. This work presents the description of applied methodologies for measurements of rotor blades vibration parameters. Additionally, the paper presents the measurement results of rotor blades vibration behavior for three counter rotating fan models studied by means of a strain gauges technique and a contactless blade tip-timing method as well as the comparison analysis of numerical and experimental results in relation to vibration behavior of tested fan models.

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Berichte der Organisationen zum Thema "Methodology 3A"

Joyce, Marilyn, Andrew Marcotte, Van Calvez, Richard Barker und Pat Crawford. Preventing Work-Related Musculoskeletal Illnesses Through Ergonomics: The Air Force PREMIER Program. Volume 3A: Level I Ergonomics Methodology Guide For Administrative Work Areas. Fort Belvoir, VA: Defense Technical Information Center, Februar 1997. http://dx.doi.org/10.21236/ada325659.

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