Relevant bibliographies by topics / Extraction procedures

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Extraction procedures'

Author: Grafiati
Published: 4 June 2021
Last updated: 6 February 2022

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Journal articles on the topic "Extraction procedures"

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Lickfeldt, D. W., N. E. Hofmann, J. D. Jones, A. M. Hamblin, and T. B. Voigt. "Comparing Three DNA Extraction Procedures for Cost, Efficiency, and DNA Yield." HortScience 37, no. 5 (August 2002): 822–25. http://dx.doi.org/10.21273/hortsci.37.5.822.

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An efficient deoxyribonucleic acid (DNA) extraction procedure that yields large quantities of DNA would provide adequate DNA for a large number of different analytical procedures. This study was conducted to compare three DNA extraction procedures for cost, time efficiency, and DNA content while extracting DNA from Kentucky bluegrass (Poa pratensis L.). Three students at the Univ. of Illinois with varying levels of DNA extraction experience conducted DNA extractions using Plant DNeasy™ Mini Kits, Plant DNAzol® Reagent, and a PEX/CTAB buffer. Costs varied significantly with cost (US$) per DNA sample of $3.04 for the DNeasy™ method, $0.99 for the DNAzol® method, and $0.39 for the PEX/CTAB extraction. The DNAzol® method was the fastest; although extracting 2.8 ng less DNA than the DNeasy™ method, it did not require the use of hazardous organic solvents, and random amplified polymorphic DNA (RAPD) markers were satisfactory for DNA fingerprinting of Kentucky bluegrass cultivars. The PEX/CTAB method, which did not include a tissue homogenization step, did not have reproducible banding patterns due to miniscule and inconsistent quantities of DNA extracted, or possibly due to inadequate purification. The investigator with the least DNA extraction experience was the slowest, while extracting 75% more DNA. All three methods are easily adapted to laboratories having personnel with different levels of experience. The DNAzol® Reagent method should save time and money, with reproducible results when many individual plant samples need to be identified. Chemical names used: potassium ethyl xanthogenate (PEX); cetyltrimethyl ammonium bromide (CTAB)
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Saravanabavan, Nandhini, Kartik J. Salwe, R. Sudar Codi, and Manimekalai Kumarappan. "Herbal extraction procedures: need of the hour." International Journal of Basic & Clinical Pharmacology 9, no. 7 (June 26, 2020): 1135. http://dx.doi.org/10.18203/2319-2003.ijbcp20202566.

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Extraction is the first most important step for preparing herbal drug formulations. It serves as an alternate method to identify the lead compound by isolating the active compounds from the crude drug using various extraction techniques by adding suitable solvent. Selection of solvent is the most important step as the success rate depends on it. Thus, by identifying the lead compound, extraction plays an important role in the process of drug discovery. In this review, different methods of extraction used for extracting the herbal extracts have been discussed with their advantages and disadvantages and also a brief discussion on solvent selection and actions of few phytochemicals have also been discussed.
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Conte, R., D. Giaccari, and R. Giorgetti. "Second premolar extraction procedures." Progress in Orthodontics 2, no. 1 (January 2001): 46–53. http://dx.doi.org/10.1034/j.1600-9975.2001.20108.x.

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Chiarotti, Marcello. "Overview on extraction procedures." Forensic Science International 63, no. 1-3 (December 1993): 161–70. http://dx.doi.org/10.1016/0379-0738(93)90270-k.

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Tlustoš, Pavel, Jiřina Száková, Alena Stárková, and Daniela Pavlíková. "A comparison of sequential extraction procedures for fractionation of arsenic, cadmium, lead, and zinc in soil." Open Chemistry 3, no. 4 (December 1, 2005): 830–51. http://dx.doi.org/10.2478/bf02475207.

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AbstractTwelve soil samples differing in physicochemical properties and total element contents were extracted by three sequential extraction procedures to determine As, Cd, Pb, and Zn bound to individual soil fractions and are defined by individual operational procedures. In the case of arsenic, two additional sequential extraction schemes were designed entirely for fractionation of soil containing arsenic were tested. The results confirmed that determination of element proportions bound to individual soil fractions is strongly dependent on the extracting agent and/or procedure applied within individual extracting schemes. As expected, absolute values of the elements released among the individual extracting procedures are weakly comparable. More reliable results were determined for the more mobile soil elements i.e. cadmium and zinc, in the fractions characterizing the most mobile proportions of investigated elements where significant correlations with basic soil characteristics were observed. In contrast, ambiguous results were observed for As and Pb, for both the individual extraction procedures and the effect of the soil characteristics. Regardless of the studied element, the poorest results were determined for reducible and oxidizable soil fractions. The application of at least two independent procedures or modification of the extraction scheme according to element investigated and/or particular soil characteristics can also be helpful in definition of element pattern in soils in further research.
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Hutt, Erika, Mohamed Diab, Oussama M. Wazni, Simrat Kaur, Khaldoun G. Tarakji, Walid I. Saliba, Mohamed Kanj, et al. "Transvenous lead extraction in patients with prior extraction procedures: Procedural profiles and outcomes." Heart Rhythm 17, no. 11 (November 2020): 1904–8. http://dx.doi.org/10.1016/j.hrthm.2020.05.042.

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Sidhu, Baldeep S., Justin Gould, Catey Bunce, Mark Elliott, Vishal Mehta, Charles Kennergren, Christian Butter, et al. "The effect of centre volume and procedure location on major complications and mortality from transvenous lead extraction: an ESC EHRA EORP European Lead Extraction ConTRolled ELECTRa registry subanalysis." EP Europace 22, no. 11 (July 20, 2020): 1718–28. http://dx.doi.org/10.1093/europace/euaa131.

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Abstract Aims Transvenous lead extraction (TLE) should ideally be undertaken by experienced operators in a setting that allows urgent surgical intervention. In this analysis of the ELECTRa registry, we sought to determine whether there was a significant difference in procedure complications and mortality depending on centre volume and extraction location. Methods and results Analysis of the ESC EORP European Lead Extraction ConTRolled ELECTRa registry was conducted. Low-volume (LoV) centres were defined as <30 procedures/year, and high-volume (HiV) centres as ≥30 procedures/year. Three thousand, two hundred, and forty-nine patients underwent TLE by a primary operator cardiologist; 17.1% in LoV centres and 82.9% in HiV centres. Procedures performed by primary operator cardiologists in LoV centres were less likely to be successful (93.5% vs. 97.1%; P < 0.0001) and more likely to be complicated by procedure-related deaths (1.1% vs. 0.4%; P = 0.0417). Transvenous lead extraction undertaken by primary operator cardiologists in LoV centres were associated with increased procedure-related major complications including death (odds ratio 1.858, 95% confidence interval 1.007–3.427; P = 0.0475). Transvenous lead extraction locations varied; 52.0% operating room, 9.5% hybrid theatre and 38.5% catheterization laboratory. Rates of procedure-related major complications, including death occurring in a high-risk environment (combining operating room and hybrid theatre), were similar to those undertaken in the catheterization laboratory (1.7% vs. 1.6%; P = 0.9297). Conclusion Primary operator cardiologists in LoV centres are more likely to have extractions complicated by procedure-related deaths. There was no significant difference in procedure complications between different extraction settings. These findings support the need for TLE to be performed in experienced centres with appropriate personnel present.
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Jacheć, Wojciech, Anna Polewczyk, Maciej Polewczyk, Andrzej Tomasik, and Andrzej Kutarski. "Transvenous Lead Extraction SAFeTY Score for Risk Stratification and Proper Patient Selection for Removal Procedures Using Mechanical Tools." Journal of Clinical Medicine 9, no. 2 (January 28, 2020): 361. http://dx.doi.org/10.3390/jcm9020361.

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Background: To ensure the safety and efficacy of the increasing number of transvenous lead extractions (TLEs), it is necessary to adequately assess the procedure-related risk. Methods: We analyzed potential clinical and procedural risk factors associated with 2049 TLE procedures. The TLEs were performed between 2006 and 2016 using only simple tools for lead extraction. Logistic regression analysis was used to develop a risk prediction scoring system for TLEs. Results: Multivariate analysis showed that the sum of lead dwell times, anemia, female gender, the number of procedures preceding TLE, and removal of leads implanted in patients under the age of 30 had a significant influence on the occurrence of major complications during a TLE. This information served as a basis for developing a predictive SAFeTY TLE score, where: S = sum of lead dwell times, A = anemia, Fe = female, T = treatment (previous procedures), Y = young patients, and TLE = transvenous lead extraction. In order to facilitate the use of the SAFeTY TLE Score, a simple calculator was constructed. Conclusion: The SAFeTY TLE score is easy to calculate and predicts the potential occurrence of procedure-related major complications. High-risk patients (scoring more than 10 on the SAFeTY TLE scale) must be treated at high-volume centers with surgical backup.
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Benassi, Laura, Ivano Alessandri, and Irene Vassalini. "Assessing Green Methods for Pectin Extraction from Waste Orange Peels." Molecules 26, no. 6 (March 21, 2021): 1766. http://dx.doi.org/10.3390/molecules26061766.

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In this work, we assess three different methods for the extraction of pectin from waste orange peels, using water as extracting solvent. “Hot-water”, Rapid Solid Liquid Dynamic (RSLD) and microwave-assisted extractions have been compared and evaluated in terms of amount and quality of extracted pectin, as well as embodied energy. This analysis provides useful guidelines for pectin production from food waste according to green procedures, enabling the identification of acidic “hot-water” as the most sustainable extraction route.
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Shen, Ye, Ming Zhu, Ming Yue Zhai, Gang Lv, Tan Li, and Xin Sun. "Effect of Procedure Parameters on the Antioxidant Property of Perilla Frutescens Leave Extracts." Applied Mechanics and Materials 644-650 (September 2014): 5259–61. http://dx.doi.org/10.4028/www.scientific.net/amm.644-650.5259.

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The aim of this study was to determine the procedure parameters, including drying, extracting and pH on the antioxidant activity and antioxidative compounds in Perilla frutescens leaves. The extraction of antioxidants from Perilla frutescens leaves is studied considering different drying and extracting procedures to investigate the selectivity of the process. The radical-scavenging activity (RSA) of 1, 1-diphenyl-2-picrylhydrazyl (DPPH) and the determination of the total phenolic content are applied to evaluate the antioxidant activity and antioxidative compounds of the Perilla frutescens leave extracts. The highest antioxidant activity is observed for the extract obtained by freeze drying, extracting by ultrasound with 80% methanol adjusted at pH 4.The antioxidant compound extraction yield was also the highest at these extraction conditions. The total phenol contents among the Perilla frutescens leave extracts produced by different drying procedures were similar, while the antioxidant activities were different This concluding that the amount of phenolic compounds extracted was similar but the type and probable structure of the phenolic changed during heat-drying procedure providing in this way. Our study showed that proper process technology could ultimately extract compounds potentially effective against diseases related to free radical oxidation.
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Dissertations / Theses on the topic "Extraction procedures"

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Amusan, Anuoluwapo. "Optimization of oil extraction procedures from animal tissue." Thesis, McGill University, 2009. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=40832.

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Oil was extracted from chicken and pork fat discards by microwave assisted extraction and soxhlet extraction for comparison. Protease enzyme and pulsed electric field were used as a pretreatment prior to extraction by either soxhlet or microwave assisted extraction by hexane. Conditions for both the enzyme pretreatment and the microwave extraction were optimized for the extraction of the oils from the discards. The fat discards were pretreated with papain enzyme in a phosphate buffer solution (pH 7.0) and incubated at 45oC in a water bath and incubated at various time intervals (30 min, 1 h, 2 h and 3 h). Enzyme pretreatment at 2 h produced the highest oil yield increase of 20.1% when compared to the control samples (P=0.0003) in chicken samples and an oil yield increase of 16.6% in comparison to control samples (P=0.0179) in pork samples. There was a decrease in oil yield at 3 h and no significant difference in oil yield when compared to control in both chicken samples (P=0.217) and pork samples (P=1.0000). Optimization of microwave assisted process shows that microwave irradiation for 7.5 min produced the best oil yield and was the most effective in oil extraction from the animal discards. There was no significant difference in oil yield produced when the irradiation time was increased to 10 min, 12.5 min, and 15min. The results obtained from optimization of microwave assisted extraction were comparable to those obtained by soxhlet extraction for 3 hr. There were significant difference between oil yield obtained from both extraction methods (P=<0.05). There were no differences in the FAME profile when compared to the literature. Pulsed electric field pretreatments were carried out on pork samples at electric field strength of 2 kV cm-1, 4 kV cm-1, 6 kV cm-1. The oil yields obtained were compared to values obtained from control samples after extraction using microwave assisted extraction for 3 min. Pulsed electric field at 4 kV cm-1 produced an oil yield increas
Les matières grasses des déchets associés au parage provenant des industries porcine et avicole ont été extraites par l’utilisation d’une extraction assistée par les microondes et par une méthode standard, la méthode Soxhlet. Deux prétraitements, l’hydrolyse enzymatique et le champ pulsé, ont été utilisés avant l’extraction à l’hexane des matières grasses. Les conditions d’application du prétraitement enzymatique et de l’extraction assistée par les microondes ont été optimisées pour maximiser l’extraction à partir des matières grasses rejetées par l’industrie. Les déchets gras ont été prétraités avec une protéase, la papaïne, dans un tampon phosphate (pH 7.0) et incubés à 45oC dans un bain-marie pour des intervalles de temps variés (30min, 1 h, 2 h et 3h). Les augmentations les plus importantes de l’extraction des matières grasses ont été obtenues avec le prétraitement enzymatique des échantillons de volaille (20.1%, P=0.0003) et de porc (16.6%, P=0.0179) pour une durée de 2 h lorsque comparé aux échantillons témoins. Une diminution du rendement de l’extraction a été notée lors du traitement enzymatique d’une durée de 3h sans que ces valeurs montrent des différences significatives avec les échantillons témoins de volaille (p=0.217) et de porc (P=1.000). L’optimisation du procédé d’extraction par microonde a montré que l’irradiation avec les microondes pendant 7.5 min a produit les meilleurs rendements d’extraction. Aucune différence significative n’a été retrouvée lorsque les échantillons ont été soumis à l’irradiation pour des temps accrus à 10 min, 12.5 min et 15 min. Les résultats obtenus pour l’optimisation de l’extraction assistée par les microondes sont comparables à ceux obtenus par l’extraction pendant 3 h avec la méthode Soxhlet. Des différences significatives de rendement en matières grasses ont été obtenues avec les deux méthodes d’extracti
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Schweizer, Amelia Lee. "Determination and assessment of procedures of the pour-through nutrient extraction procedure for bedding flats and plug trays." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-10312009-020402/.

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Cavins, Todd J. "Adaptation of the PourThru Nutrient Extraction Procedures to Greenhouse Crop Production." NCSU, 2002. http://www.lib.ncsu.edu/theses/available/etd-10312002-105020/.

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The purpose of this research was to adapt the PourThru nutrient extraction technique, which is the displacement of the bulk solution from the production container without a destructive harvest, to commercial greenhouse crop production. PourThru is a quick and easy nutrient sampling technique that is not laboratory oriented and can help prevent costly nutritional problems for greenhouse crop producers. Additionally, time domain reflectometry (TDR) was evaluated as an experimental tool to measure substrate moisture content, which may affect PourThru extraction. Time domain reflectometry is quick, non-destructive and has potential for use in automation of moisture content determination in greenhouse production. Previous PourThru research had focused on techniques for use on large nursery containers (≈ 3800 cm3) versus the smaller floriculture containers (≈ 1500 cm3) and no exact calibration of PourThru nutrient values to saturated media extract (SME) values, the current standard for nutrient testing, had been completed. Therefore, studies were implemented to examine the relationship of PourThru to SME, evaluate irrigation systems and timing effect on PourThru results as well as develop recommended influent and leachate volumes to ensure an unadulterated sample. Calibration curves were developed between PourThru and SME values and r2 values ranged from 0.91 to 0.99 for linear relationships. Irrigation systems did affect electrical conductivity (EC) values and alternative interpretive standard values were developed dependent upon irrigation system. Timing of the PourThru was important to ensure adequate leachate was collected for sample analysis and the amount of influent affected EC values and the amount of leachate collected. The use of TDR was effective in small containers (980.6 and 2177.5 cm3); however, care should be taken to match probe size to container size to ensure representative sampling. The largest limitation to TDR use was the bulk density of the substrate being analyzed. Approximately a 50 to 75% underestimation occurred when substrate bulk densities were below 1.2 g.cm-3, but material specific calibration improved TDR accuracy to within 4%.
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Ma, Hongwei. "A new strategy for the extraction of genomic DNA from various biological matrices." Thesis, University of Strathclyde, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366903.

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Sloan, Raymond. "Enzyme extraction and dye-affinity purification procedures applicable to commercial biomedical diagnostics." Thesis, Queen's University Belfast, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336738.

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Ferreira, Lage Sandra. "The neurotoxin β-N-methylamino-L-alanine (BMAA) : Sources, bioaccumulation and extraction procedures." Doctoral thesis, Stockholms universitet, Institutionen för ekologi, miljö och botanik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-132142.

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β-methylamino-L-alanine (BMAA) is a neurotoxin linked to neurodegeneration, which is manifested in the devastating human diseases amyotrophic lateral sclerosis, Alzheimer’s and Parkinson’s disease. This neurotoxin is known to be produced by almost all tested species within the cyanobacterial phylum including free living as well as the symbiotic strains. The global distribution of the BMAA producers ranges from a terrestrial ecosystem on the Island of Guam in the Pacific Ocean to an aquatic ecosystem in Northern Europe, the Baltic Sea, where annually massive surface blooms occur. BMAA had been shown to accumulate in the Baltic Sea food web, with highest levels in the bottom dwelling fish-species as well as in mollusks. One of the aims of this thesis was to test the bottom-dwelling bioaccumulation hypothesis by using a larger number of samples allowing a statistical evaluation. Hence, a large set of fish individuals from the lake Finjasjön, were caught and the BMAA concentrations in different tissues were related to the season of catching, fish gender, total weight and species. The results reveal that fish total weight and fish species were positively correlated with BMAA concentration in the fish brain. Therefore, significantly higher concentrations of BMAA in the brain were detected in plankti-benthivorous fish species and heavier (potentially older) individuals. Another goal was to investigate the potential production of BMAA by other phytoplankton organisms. Therefore, diatom cultures were investigated and confirmed to produce BMAA, even in higher concentrations than cyanobacteria. All diatom cultures studied during this thesis work were show to contain BMAA, as well as one dinoflagellate species. This might imply that the environmental spread of BMAA in aquatic ecosystems is even higher than previously thought. Earlier reports on the concentration of BMAA in different organisms have shown highly variable results and the methods used for quantification have been intensively discussed in the scientific community. In the most recent studies, liquid chromatography-tandem mass spectrometry (LC-MS/MS) has become the instrument of choice, due to its high sensitivity and selectivity. Even so, different studies show quite variable concentrations of BMAA. In this thesis, three of the most common BMAA extraction protocols were evaluated in order to find out if the extraction could be one of the sources of variability. It was found that the method involving precipitation of proteins using trichloroacetic acid gave the best performance, complying with all in-house validation criteria. However, extractions of diatom and cyanobacteria cultures with this validated method and quantified using LC-MS/MS still resulted in variable BMAA concentrations, which suggest that also biological reasons contribute to the discrepancies. The current knowledge on the environmental factors that can induce or reduce BMAA production is still limited. In cyanobacteria, production of BMAA was earlier shown to be negative correlated with nitrogen availability – both in laboratory cultures as well as in natural populations. Based on this observation, it was suggested that in unicellular non-diazotrophic cyanobacteria, BMAA might take part in nitrogen metabolism. In order to find out if BMAA has a similar role in diatoms, BMAA was added to two diatom species in culture, in concentrations corresponding to those earlier found in the diatoms. The results suggest that BMAA might induce a nitrogen starvation signal in diatoms, as was earlier observed in cyanobacteria. However, diatoms recover shortly by the extracellular presence of excreted ammonia. Thus, also in diatoms, BMAA might be involved in the nitrogen balance in the cell.

At the time of the doctoral defense, the following paper was unpublished and had a status as follows: Paper 4: Manuscript.

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Björkesten, Johan. "Development and evaluation of procedures and reagents for extraction of proteins from dried blood spots for analysis using Proseek." Thesis, Uppsala universitet, Institutionen för biologisk grundutbildning, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-219292.

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A method for extraction of proteins from dried blood spots (DBS) for analysis using Proseek is developed and evaluated. DBS, as sample format, possesses a number of desirable advantages over for example plasma samples. These advantages include for example minimal patient invasiveness, sampling simplicity and non regulated sample transportation. Highly reproducible quantitative detection of 92 proteins is demonstrated from a 1.2 mm in diameter DBS disk. The DBS inter spot analysis precision (7% coefficient of variance) is comparable to plasma inter assay precision (6% coefficient of variance). Coefficient of variance is the ratio between standard deviation to mean value for the analysed replicates. Proseek analysis of DBS could possibly reveal a unique opportunity to examine health related issues in extremely premature infants hopefully resulting in increased survival rates in the future.
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Batista, Saulo Hilton Botelho. "Evaluation of the use of different local hemostatics procedures to manage post extraction bleeding in patients under anticoagulation treatment." Universidade Federal do CearÃ, 2010. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=6328.

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CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior
The therapeutic use of Varfarin, the most common oral anticoagulant it is indicated in many cases, including the atrial fibrillation, cardiac valvular prostheses and venous trombolic disease. Many discussions still exist related to the suspension or not before tooth extraction. People who are for itâs suspension agree that it may increase the risk of hemorrhage, however the ones who prefer to maintain itâs use refer the high risk of tromboembolism. Due to the controversy related to the cronic use of oral anticoagulant before tooth extraction and what to use to control bleeding after extraction, we decided to perform a one center randomized clinical trial study to compare the effectiveness of the hemostasis using soaked gauze with tranexamic acid at 4,8% and plain gauze and the use of collagen sponge (HemosponÂ), using it inside the tooth socket after extraction. The sample was made of 84 surgical procedures performed in 38 patients who were under anticoagulant treatment and who needed at least one tooth extraction. The trial was divided in three groups regarding the method used to reach hemostasis after tooth extraction. In group I we used compression with soaked gauze with tranexamic acid at 4,8%; in group II we used collagen sponge (HemosponÂ) inside the socket while in group III we compressed the socket with dry gauze for 8 minutes. There were two cases of post surgical bleeding, being one from group I and one from group II. The data collected was evaluated thru SPSS 1.5 (Statistic Package of Social Science) program. All the statistical analysis performed were considered significantly when p was less than 5%. We used the Qui square X2 Test, Fisher Exact Test e Analysis of Variance (ANOVA) to verify the variables of the data. There was no statistically significant difference between the groups, related to bleeding (p>0,05). The compression with dry gauze and suture, compression with soaked gauze with trenaxamic acid at 4.8% and suture and the use of collagen sponge (HemosponÂ) in the tooth socket hold with suture showed similar efficacy to the control of post extraction bleeding in patients who are under anticoagulant treatment.
A terapÃutica com varfarina, o anticoagulante oral mais utilizado, està indicada em mÃltiplas situaÃÃes, incluindo a fibrilaÃÃo atrial, prÃteses valvulares cardÃacas e o tromboembolismo venoso. DiscussÃes ainda existem sobre a indicaÃÃo ou nÃo da sua interrupÃÃo prÃvia a realizaÃÃo de exodontias. Aqueles que defendem a parada de sua administraÃÃo baseiam tal decisÃo no risco aumentado de hemorragias, enquanto os que acreditam na manutenÃÃo da terapia ressaltam o risco de tromboembolismo. Em virtude das controvÃrsias acerca da realizaÃÃo de exodontias em pacientes que fazem uso crÃnico de anticoagulantes orais, alÃm da dÃvida de que mÃtodo empregar no controle do sangramento pÃs-exodontia, decidimos realizar um estudo do tipo ensaio clÃnico, unicÃntrico, randomizado com o objetivo de comparar a efetividade hemostÃtica local da compressÃo com gaze embebida ou nÃo em Ãcido tranexÃmico à 4,8% com o emprego da esponja de colÃgeno (HEMOSPONÂ) no interior do alvÃolo pÃs-exodontia. A amostra foi constituÃda por 84 procedimentos cirÃrgicos realizados em 38 pacientes sob terapia anticoagulante que necessitavam de pelo menos uma extraÃÃo dentÃria. A amostra foi dividida em trÃs grupos a depender do mÃtodo hemostÃtico local empregado para o controle do sangramento apÃs a extraÃÃo dentÃria. No grupo I utilizou-se a compressÃo com gaze embebida em Ãcido tranexÃmico a 4,8%; no grupo II introduziu-se no interior do alvÃolo uma esponja de colÃgeno (HemosponÂ); enquanto no grupo III, a compressÃo com gaze seca por 8 minutos foi o mÃtodo empregado. Em dois casos foi observado sangramento pÃs-operatÃrio sendo um paciente do grupo I e outro do grupo II. Os dados coletados foram consolidados e avaliados por meio do programa SPSS 15.0 (Statistic Package of Social Science). Todas as anÃlises estatÃsticas efetuadas foram consideradas significativas quando valor de p foi menor que 5%. Utilizou-se os testes Qui-Quadrado (XÂ), Teste Exato de Fisher e AnÃlise de VariÃncia (ANOVA) para verificar as diferenÃas entre as variÃveis. NÃo houve diferenÃa estatisticamente significante entre os grupos com relaÃÃo à ocorrÃncia de hemorragias (p-valor>0,05). A compressÃo com gaze seca associado à sutura, a compressÃo com gaze embebida com Ãcido tranexÃmico a 4,8% associada a sutura e o emprego da esponja de fibrina (HemosponÂ) intra-alveolar associado a sutura mostraram eficÃcia semelhante no controle do sangramento pÃs-exodontia em pacientes sob terapia anticoagulante.
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Sahlabadi, Mohammad. "A NOVEL BIOINSPIRED DESIGN FOR SURGICAL NEEDLES TO REDUCE TISSUE DAMAGE IN INTERVENTIONAL PROCEDURES." Diss., Temple University Libraries, 2018. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/508489.

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Mechanical Engineering
Ph.D.
The needle-based procedures are usually considered minimally invasive. However, in insertion into soft tissues such as brain and liver, the tissue damage caused by needle insertion can be very significant. From the literature, it has been known that reduction in needle insertion and extraction forces as well as tissue deformation during the insertion results in less invasive procedure. This work aims to design and develop a new bioinspired design for surgical needles which reduce the insertion and extraction forces of the needle, and its damage to the tissue. Barbs in honeybee stinger decrease its insertion force significantly. Inspired by that finding, a new honeybee-inspired needle was designed and developed, and its insertion mechanics was studied. To study the insertion mechanics of honeybee-inspired needle, insertion tests into artificial and biological tissues were performed using both honeybee-inspired and conventional needles. The barb design parameters effects on needle forces were studied through multiple insertion and extraction tests into PVC gels. The design parameters values of the barbs were experimentally modified to further reduce the ultimate insertion and extraction forces of the needle. Bioinspired needle with modified barb design parameters values reduces the insertion force by 35%, and the extraction force by 20%. To show the relevance, the insertion tests into bovine liver and brain tissue were performed. Our results show that there was a 10-25% decrease in the insertion force for insertions into bovine brain, and a 35-45% reduction in the insertion force for insertions into the bovine liver using the proposed bioinspired needles. The bioinspired and conventional needles were manufactured in different scales and then used to study the size scale effect on our results. To do so, the insertion tests into tissue-mimicking PVC gels and liver tissues were performed. The results obtained for different sizes of the needle showed 25-46% decrease in the insertion force. The tissue deformations study was conducted to measure tissue deformation during the insertion using digital image correlation. The tissue deformation results showed 17% decrease in tissue deformation using barbed needles. A histological study was performed to accurately measure the damage caused by needle insertion. Our results showed 33% less tissue damage using bioinspired needles. The results of the histological study are in agreement with our hypothesis that reducing needle forces and tissue deformation lead to less invasive percutaneous procedures.
Temple University--Theses
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Davis, Derek Charles. "The applicability of environmental impact assessment (EIA) procedures to mineral extraction, waste disposal and land reclamation schemes in south Essex." Thesis, Queen Mary, University of London, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.409292.

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Books on the topic "Extraction procedures"

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Koerner, Karl R. Clinical procedures for third molar surgery. Tulsa, Okla: PennWell Books, 1986.

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Koerner, Karl R. Clinical procedures for third molar surgery. 2nd ed. Tulsa, Okla: PennWell Books, 1995.

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Belott, Peter H. Endocardial lead extraction: A videotape and manual. Armonk, NY: Futura Pub. Co., 1998.

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Huggett, Joanna Lydia. The inclusion of ecological and nature conservation information in UK sand and gravel extraction environmental statements: With a review of current restoration procedures utilised on two extraction sites in Berkshire. [Oxford]: Oxford Brookes University, 2002.

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Hutson, Cecil Kirk. "Dilation and extraction" abortions: Medical procedure or infanticide. Sacramento, CA: Assembly Publications Office, 1996.

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Chacón, Freddy José Díaz. 30 años de casación penal: Máximas y extractos, 1959-1988. Caracas, Venezuela: Livrosca, 1990.

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Panama. Corte Suprema de Justicia. Jurisprudencia de casación penal: Extractos tecnicos de la doctrina casacionista de la Corte Suprema de Justicia. Panamá: Cultural Portobelo, 2007.

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International workshop on new frontiers in reclamation: facts and procedures in extractive industry (1st 2001 Milos Island, Greece). Proceedings of the International workshop on new frontiers in reclamation: Facts and procedures in extractive industry (REFAPRO). Greece: Milos Conference Center-George Eliopoulos, 2001.

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Shannon, Joyce Brennfleck. Dental care and oral health sourcebook: Basic consumer health information about caring for the mouth and teeth, including facts about dental hygiene and routine care guidelines, fluoride, sealants, tooth whitening systems, cavities, root canals, extractions, implants, veneers, dentures, and orthodontic and orofacial procedures; along with information about periodontal (gum) disease, canker sores, dry mouth, temporomandibular joint and muscle disorders (TMJ), oral cancer, and other conditions that impact oral health ... 4th ed. Detroit, MI: Omnigraphics, 2012.

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Ph, Quevauviller, and Royal Society of Chemistry, eds. Methodologies in soil and sediment fractionation studies: Single and sequential extraction procedures. Cambridge: Royal Society of Chemistry, 2002.

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Book chapters on the topic "Extraction procedures"

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Huibregtse, K., J. Haringsma, and D. A. Cohen. "Endoscopic sphincterotomy and stone extraction." In Procedures in Hepatogastroenterology, 159–71. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5702-5_15.

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Stahl, Egon, Karl-Werner Quirin, and Dieter Gerard. "General Picture of Separation Procedures." In Dense Gases for Extraction and Refining, 1–7. Berlin, Heidelberg: Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-72892-1_1.

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He, Jingwen, Sandeep Purao, Jon Becker, and David Strobhar. "Service Extraction from Operator Procedures in Process Industries." In Service-Oriented Perspectives in Design Science Research, 335–49. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-20633-7_24.

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Etxebarria, N., P. Navarro, A. Prieto, M. Olivares, A. Usobiaga, L. A. Fernández, and Olatz Zuloaga. "Extraction Procedures for Organic Pollutants Determination in Water." In Environmental Chemistry for a Sustainable World, 171–235. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-2439-6_4.

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Fernandes, Virgínia Cruz, M. Luz Maia, Luísa Correia Sá, Sara Sousa, Paula Paíga, José L. Vera, Valentina F. Domingues, and Cristina Delerue-Matos. "Extraction Procedures and Chromatography of Pesticides Residues in Strawberries." In Sustainable Agriculture Reviews, 167–201. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-54712-7_5.

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Asakawa, Yoshinori, and Agnieszka Ludwiczuk. "Bryophytes: Liverworts, Mosses, and Hornworts: Extraction and Isolation Procedures." In Methods in Molecular Biology, 1–20. Totowa, NJ: Humana Press, 2013. http://dx.doi.org/10.1007/978-1-62703-577-4_1.

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Weich, Klaus. "Decision Procedures for Intuitionistic Propositional Logic by Program Extraction." In Lecture Notes in Computer Science, 292–306. Berlin, Heidelberg: Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/3-540-69778-0_29.

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van der Kraan, Geert M., Maarten de Ridder, Bart P. Lomans, and Gerard Muyzer. "Sampling and Nucleic Extraction Procedures from Oil Reservoir Samples." In Applied Microbiology and Molecular Biology in Oilfield Systems, 7–16. Dordrecht: Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-9252-6_2.

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Jackson, Andrew O., and John D. O. Wagner. "Procedures for Plant Rhabdovirus Purification, Polyribosome Isolation, and Replicase Extraction." In Plant Virology Protocols, 77–97. Totowa, NJ: Humana Press, 1998. http://dx.doi.org/10.1385/0-89603-385-6:77.

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Luxen, Marc. "Variance Component Estimation in Performance Characteristics Applied to Feature Extraction Procedures." In Lecture Notes in Computer Science, 498–506. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-540-45243-0_64.

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Conference papers on the topic "Extraction procedures"

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Rege, Robert, Ann Majewicz, and Marzieh Ershad. "Surgical skill level assessment using automatic feature extraction methods." In Image-Guided Procedures, Robotic Interventions, and Modeling, edited by Robert J. Webster and Baowei Fei. SPIE, 2018. http://dx.doi.org/10.1117/12.2293911.

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Simon, Franz G., Ute Kalbe, and Wolfgang Berger. "Waste Characterization by Leaching and Extraction Procedures." In GeoCongress 2008. Reston, VA: American Society of Civil Engineers, 2008. http://dx.doi.org/10.1061/40970(309)85.

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Sabah, Shafiya, and Salam Dhou. "Image-based extraction of breathing signal from cone-beam CT projections." In Image-Guided Procedures, Robotic Interventions, and Modeling, edited by Baowei Fei and Cristian A. Linte. SPIE, 2020. http://dx.doi.org/10.1117/12.2550462.

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Herrmann, Christian, Jürgen Metzler, Dieter Willersinn, and Jürgen Beyerer. "Distant pulse oximetry based on skin region extraction and multi-spectral measurement." In Image-Guided Procedures, Robotic Interventions, and Modeling, edited by Robert J. Webster and Baowei Fei. SPIE, 2018. http://dx.doi.org/10.1117/12.2293623.

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McAndrew, Colin C., and Tamara Bettinger. "Improved parameter extraction procedures for the R3 model." In 2011 International Conference on Microelectronic Test Structures (ICMTS). IEEE, 2011. http://dx.doi.org/10.1109/icmts.2011.5976858.

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Li, Chen, Xiaoyao Fan, Joshua Aronson, and Keith D. Paulsen. "A comparison of geometry- and feature-based sparse data extraction for model-based image updating in deep brain stimulation surgery." In Image-Guided Procedures, Robotic Interventions, and Modeling, edited by Baowei Fei and Cristian A. Linte. SPIE, 2019. http://dx.doi.org/10.1117/12.2513142.

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Narandzic, Milan, Markus Landmann, Christian Schneider, and Reiner S. Thoma. "Influence of Extraction Procedures on Estimated Wideband MIMO Channel Parameters." In 2007 16th IST Mobile and Wireless Communications Summit. IEEE, 2007. http://dx.doi.org/10.1109/istmwc.2007.4299287.

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Klęsk, Przemysław, and Aneta Bera. "Constant-time Extraction of Statistical Moments for Object Detection Procedures." In 7th International Conference on Pattern Recognition Applications and Methods. SCITEPRESS - Science and Technology Publications, 2018. http://dx.doi.org/10.5220/0006550000490059.

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Schaeffer, P., R. Schwartz-Narbonne, P. Adam, D. Rush, and M. Rohmer. "Comparison Between Extraction Procedures for the Recovery of Polyfunctionalized Biohopanoids." In 30th International Meeting on Organic Geochemistry (IMOG 2021). European Association of Geoscientists & Engineers, 2021. http://dx.doi.org/10.3997/2214-4609.202134113.

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Castro, L., S. Pecha, S. Amin, M. Linder, N. Gosau, S. Willems, H. Reichenspurner, and S. Hakmi. "Up to 5-Year Follow-up after Transvenous Lead Extraction Procedures." In 48th Annual Meeting German Society for Thoracic, Cardiac, and Vascular Surgery. Georg Thieme Verlag KG, 2019. http://dx.doi.org/10.1055/s-0039-1678947.

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Reports on the topic "Extraction procedures"

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Gallotta, C., S A Gouwy, and L. Komaromi. Evaluation and optimization of acid processing procedures for the extraction of conodont elements from calcareous rock. Natural Resources Canada/CMSS/Information Management, 2021. http://dx.doi.org/10.4095/328273.

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Li, Howell, Enrique Saldivar-Carranza, Jijo K. Mathew, Woosung Kim, Jairaj Desai, Timothy Wells, and Darcy M. Bullock. Extraction of Vehicle CAN Bus Data for Roadway Condition Monitoring. Purdue University, 2020. http://dx.doi.org/10.5703/1288284317212.

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Obtaining timely information across the state roadway network is important for monitoring the condition of the roads and operating characteristics of traffic. One of the most significant challenges in winter roadway maintenance is identifying emerging or deteriorating conditions before significant crashes occur. For instance, almost all modern vehicles have accelerometers, anti-lock brake (ABS) and traction control systems. This data can be read from the Controller Area Network (CAN) of the vehicle, and combined with GPS coordinates and cellular connectivity, can provide valuable on-the-ground sampling of vehicle dynamics at the onset of a storm. We are rapidly entering an era where this vehicle data can provide an agency with opportunities to more effectively manage their systems than traditional procedures that rely on fixed infrastructure sensors and telephone reports. This data could also reduce the density of roadway weather information systems (RWIS), similar to how probe vehicle data has reduced the need for micro loop or side fire sensors for collecting traffic speeds.
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David, W. J., V. J. McNicoll, D. R. Bellerive, K. Santowski, and D. J. Scott. Modified chemical procedures for the extraction and purification of uranium from titanite, allanite, and rutile in the Geochronology Laboratory, Geological Survey of Canada. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1997. http://dx.doi.org/10.4095/209090.

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Crouch, Rebecca, Jared Smith, Bobbi Stromer, Christian Hubley, Samuel Beal, Guilherme Lotufo, Afrachanna Butler, et al. Methods for simultaneous determination of legacy and insensitive munition (IM) constituents in aqueous, soil/sediment, and tissue matrices. Engineer Research and Development Center (U.S.), August 2021. http://dx.doi.org/10.21079/11681/41720.

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Currently, no standard method exists for analyzing insensitive munition (IM) compounds in environmental matrices, with or without concurrent legacy munition compounds, resulting in potentially inaccurate determinations. The primary objective of this work was to develop new methods of extraction, pre-concentration, and analytical separation/quantitation of 17 legacy munition compounds along with several additional IM compounds, IM breakdown products, and other munition compounds that are not currently included in U.S. Environmental Protection Agency (EPA) Method 8330B. Analytical methods were developed to enable sensitive, simultaneous detection and quantitation of the 24 IM and legacy compounds, including two orthogonal high-performance liquid chromatography (HPLC) column separations with either ultraviolet (UV) or mass spectrometric (MS) detection. Procedures were developed for simultaneous extraction of all 24 analytes and two surrogates (1,2-dinitrobenzene, 1,2-DNB; o-NBA) from high- and low-level aqueous matrices and solid matrices, using acidification, solid phase extraction (SPE), or solvent extraction (SE), respectively. The majority of compounds were recovered from four tissue types within current limits for solids, with generally low recovery only for Tetryl (from 4 to 62%). A preparatory chromatographic interference removal procedure was adapted for tissue extracts, as various analytical interferences were observed for all studied tissue types.
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Stromer, Bobbi, Rebecca Crouch, Katrinka Wayne, Ashley Kimble, Jared Smith, and Anthony Bednar. Methods for simultaneous determination of 29 legacy and insensitive munition (IM) constituents in aqueous, soil-sediment, and tissue matrices by high-performance liquid chromatography (HPLC). Engineer Research and Development Center (U.S.), September 2021. http://dx.doi.org/10.21079/1168142105.

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Standard methods are in place for analysis of 17 legacy munitions compounds and one surrogate in water and soil matrices; however, several insensitive munition (IM) and degradation products are not part of these analytical procedures. This lack could lead to inaccurate determinations of munitions in environmental samples by either not measuring for IM compounds or using methods not designed for IM and other legacy compounds. This work seeks to continue expanding the list of target analytes currently included in the US Environmental Protection Agency (EPA) Method 8330B. This technical report presents three methods capable of detecting 29 legacy, IM, and degradation products in a single High Performance Liquid Chromatography (HPLC) method with either ultraviolet (UV)-visible absorbance detection or mass spectrometric detection. Procedures were developed from previously published works and include the addition of hexahydro-1-nitroso-3,5-dinitro-1,3,5-triazine (MNX); hexahydro-1,3-dinitroso-5-nitro-1,3,5-triazine (DNX); hexahydro-1,3,5-trinitroso-1,3,5-triazine (TNX); 2,4-diamino-6-nitrotoluene (2,4-DANT); and 2,6-diamino-4-nitrotoluene (2,6-DANT). One primary analytical method and two secondary (confirmation) methods were developed capable of detecting 29 analytes and two surrogates. Methods for high water concentrations (direct injection), low-level water concentrations (solid phase extraction), soil (solvent extraction), and tissue (solvent extraction) were tested for analyte recovery of the new compounds.
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Serne, R. J., W. J. Martin, R. O. Lokken, V. L. LeGore, C. W. Lindenmeier, and P. F. C. Martin. Leach and EP (extraction procedure) toxicity tests on grouted waste from Tank 106-AN. Office of Scientific and Technical Information (OSTI), September 1989. http://dx.doi.org/10.2172/5715878.

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Lumpkin, Shamsie, Isaac Parrish, Austin Terrell, and Dwayne Accardo. Pain Control: Opioid vs. Nonopioid Analgesia During the Immediate Postoperative Period. University of Tennessee Health Science Center, July 2021. http://dx.doi.org/10.21007/con.dnp.2021.0008.

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Background Opioid analgesia has become the mainstay for acute pain management in the postoperative setting. However, the use of opioid medications comes with significant risks and side effects. Due to increasing numbers of prescriptions to those with chronic pain, opioid medications have become more expensive while becoming less effective due to the buildup of patient tolerance. The idea of opioid-free analgesic techniques has rarely been breached in many hospitals. Emerging research has shown that opioid-sparing approaches have resulted in lower reported pain scores across the board, as well as significant cost reductions to hospitals and insurance agencies. In addition to providing adequate pain relief, the predicted cost burden of an opioid-free or opioid-sparing approach is significantly less than traditional methods. Methods The following groups were considered in our inclusion criteria: those who speak the English language, all races and ethnicities, male or female, home medications, those who are at least 18 years of age and able to provide written informed consent, those undergoing inpatient or same-day surgical procedures. In addition, our scoping review includes the following exclusion criteria: those who are non-English speaking, those who are less than 18 years of age, those who are not undergoing surgical procedures while admitted, those who are unable to provide numeric pain score due to clinical status, those who are unable to provide written informed consent, and those who decline participation in the study. Data was extracted by one reviewer and verified by the remaining two group members. Extraction was divided as equally as possible among the 11 listed references. Discrepancies in data extraction were discussed between the article reviewer, project editor, and group leader. Results We identified nine primary sources addressing the use of ketamine as an alternative to opioid analgesia and post-operative pain control. Our findings indicate a positive correlation between perioperative ketamine administration and postoperative pain control. While this information provides insight on opioid-free analgesia, it also revealed the limited amount of research conducted in this area of practice. The strategies for several of the clinical trials limited ketamine administration to a small niche of patients. The included studies provided evidence for lower pain scores, reductions in opioid consumption, and better patient outcomes. Implications for Nursing Practice Based on the results of the studies’ randomized controlled trials and meta-analyses, the effects of ketamine are shown as an adequate analgesic alternative to opioids postoperatively. The cited resources showed that ketamine can be used as a sole agent, or combined effectively with reduced doses of opioids for multimodal therapy. There were noted limitations in some of the research articles. Not all of the cited studies were able to include definitive evidence of proper blinding techniques or randomization methods. Small sample sizes and the inclusion of specific patient populations identified within several of the studies can skew data in one direction or another; therefore, significant clinical results cannot be generalized to patient populations across the board.
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Van Wychen, Stefanie R., and Lieve M. Laurens. Determination of Total Sterols in Microalgae by Acid Hydrolysis and Extraction: Laboratory Analytical Procedure (LAP). Issue Date: December 21, 2018. Office of Scientific and Technical Information (OSTI), December 2018. http://dx.doi.org/10.2172/1488917.

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Crapse, K., A. Cozzi, C. Crawford, and A. Jurgensen. TOXICITY CHARACTERISTIC LEACHING PROCEDURE APPLIED TO RADIOACTIVE SALTSTONE CONTAINING TETRAPHENYLBORATE: DEVELOPMENT OF A MODIFIED ZERO-HEADSPACE EXTRACTOR. Office of Scientific and Technical Information (OSTI), September 2006. http://dx.doi.org/10.2172/1039279.

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Harris, Gregory, Brooke Hatchell, Davelin Woodard, and Dwayne Accardo. Intraoperative Dexmedetomidine for Reduction of Postoperative Delirium in the Elderly: A Scoping Review. University of Tennessee Health Science Center, July 2021. http://dx.doi.org/10.21007/con.dnp.2021.0010.

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Background/Purpose: Post-operative delirium leads to significant morbidity in elderly patients, yet there is no regimen to prevent POD. Opioid use in the elderly surgical population is of the most significant risk factors for developing POD. The purpose of this scoping review is to recognize that Dexmedetomidine mitigates cognitive dysfunction secondary to acute pain and the use of narcotic analgesia by decreasing the amount of norepinephrine (an excitatory neurotransmitter) released during times of stress. This mechanism of action also provides analgesia through decreased perception and modulation of pain. Methods: The authors developed eligibility criteria for inclusion of articles and performed a systematic search of several databases. Each of the authors initially selected five articles for inclusion in the scoping review. We created annotated literature tables for easy screening by co-authors. After reviewing the annotated literature table four articles were excluded, leaving 11 articles for inclusion in the scoping review. There were six level I meta-analysis/systematic reviews, four level II randomized clinical trials, and one level IV qualitative research article. Next, we created a data-charting form on Microsoft Word for extraction of data items and synthesis of results. Results: Two of the studies found no significant difference in POD between dexmedetomidine groups and control groups. The nine remaining studies noted decreases in the rate, duration, and risk of POD in the groups receiving dexmedetomidine either intraoperatively or postoperatively. Multiple studies found secondary benefits in addition to decreased POD, such as a reduction of tachycardia, hypertension, stroke, hypoxemia, and narcotic use. One study, however, found that the incidence of hypotension and bradycardia were increased among the elderly population. Implications for Nursing Practice: Surgery is a tremendous stressor in any age group, but especially the elderly population. It has been shown postoperative delirium occurs in 17-61% of major surgery procedures with 30-40% of the cases assumed to be preventable. Opioid administration in the elderly surgical population is one of the most significant risk factors for developing POD. With anesthesia practice already leaning towards opioid-free and opioid-limited anesthetic, the incorporation of dexmedetomidine could prove to be a valuable resource in both reducing opioid use and POD in the elderly surgical population. Although more research is needed, the current evidence is promising.
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