Relevant bibliographies by topics / Extrakce SPE

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
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Academic literature on the topic 'Extrakce SPE'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Extrakce SPE"

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ČULÍK, Jiří, Tomáš HORÁK, Marie JURKOVÁ, Pavel ČEJKA, Vladimír KELLNER, and Josef DVOŘÁK. "Determination of aromatic alcohols in beer using the solid phase extraction (SPE) followed by gas chromatography - mass spectrometry (GC-MS). Part II. - The content of aromatic alcohols in czech beers." Kvasny Prumysl 55, no. 10 (October 1, 2009): 273–77. http://dx.doi.org/10.18832/kp2009023.

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ČULÍK, Jiří, Tomáš HORÁK, Marie JURKOVÁ, Pavel ČEJKA, Vladimír KELLNER, and Josef DVOŘÁK. "Determination of aromatic alcohols in beer by solid phase extraction and detection with gas chromatography in combination with mass spectrometry (GC-MS). Part I - Creation and validation of the analytical method." Kvasny Prumysl 55, no. 7-8 (July 1, 2009): 177–86. http://dx.doi.org/10.18832/kp2009018.

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Ōba, Minako, and Asa Yoneda. "Once She (Extract)." Wasafiri 35, no. 2 (April 2, 2020): 50–53. http://dx.doi.org/10.1080/02690055.2020.1721118.

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Barbosa-Pereira, Letricia, Ainara Pocheville, Inmaculada Angulo, Perfecto Paseiro-Losada, and Jose M. Cruz. "Fractionation and Purification of Bioactive Compounds Obtained from a Brewery Waste Stream." BioMed Research International 2013 (2013): 1–11. http://dx.doi.org/10.1155/2013/408491.

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The brewery industry generates waste that could be used to yield a natural extract containing bioactive phenolic compounds. We compared two methods of purifying the crude extract—solid-phase extraction (SPE) and supercritical fluid extraction (SFE)—with the aim of improving the quality of the final extract for potential use as safe food additive, functional food ingredient, or nutraceutical. The predominant fractions yielded by SPE were the most active, and the fraction eluted with 30% (v/v) of methanol displayed the highest antioxidant activity (0.20 g L−1), similar to that of BHA. The most active fraction yielded by SFE (EC50of 0.23 g L−1) was obtained under the following conditions: temperature 40°C, pressure 140 bar, extraction time 30 minutes, ethanol (6%) as a modifier, and modifier flow 0.2 mL min−1. Finally, we found that SFE is the most suitable procedure for purifying the crude extracts and improves the organoleptic characteristics of the product: the final extract was odourless, did not contain solvent residues, and was not strongly coloured. Therefore, natural extracts obtained from the residual stream and purified by SFE can be used as natural antioxidants with potential applications in the food, cosmetic, and pharmaceutical industries.
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Tsika, Gretchen, Juan Ji, and Richard Tsika. "Sp3 Proteins Negatively Regulate β Myosin Heavy Chain Gene Expression during Skeletal Muscle Inactivity." Molecular and Cellular Biology 24, no. 24 (December 15, 2004): 10777–91. http://dx.doi.org/10.1128/mcb.24.24.10777-10791.2004.

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ABSTRACT In adult skeletal muscle, β myosin heavy chain (βMyHC) gene expression is primarily restricted to slow type I fibers; however, its expression is down-regulated in response to muscle inactivity. Little is known about the signaling pathways and transcription factors that mediate this important functional response. This study demonstrates that increased binding of Sp3 to GC-rich elements in theβ MyHC promoter is a critical event in down-regulation ofβ MyHC gene expression under non-weight-bearing conditions. Conversely, binding of Sp3 to these elements decreased while Sp1 binding increased with nuclear extracts from plantaris muscle exposed to mechanical overload, a stimulus that increases βMyHC gene expression. In addition, these experiments revealed the existence of an Sp4-DNA binding complex when using adult skeletal muscle nuclear extract was used but not when nuclear extracts from cultured myotubes were used. Sp3 proteins are competitive inhibitors of Sp1-mediatedβ MyHC reporter gene transactivation in both Drosophila SL-2 and mouse C2C12 myotubes. Sp4 is a weak activator of βMyHC gene expression in SL-2 cells, which lack endogenous Sp1 activity, but does not activate βMyHC gene expression in C2C12 myotubes, which have high levels of Sp1. These results suggest that competitive binding of Sp family proteins regulate βMyHC gene transcription in response to altered neuromuscular activity.
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Lambert, Maja, Steen Honoré Hansen, Majid Sairafianpour, and Jerzy W. Jaroszewski. "Rapid Extract Dereplication Using HPLC-SPE-NMR: Analysis of Isoflavonoids fromSmirnowiairanica." Journal of Natural Products 68, no. 10 (October 2005): 1500–1509. http://dx.doi.org/10.1021/np0502037.

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SHIMIZU, Chikara, Hirotoshi FUDA, Young C. LEE, and Charles A. STROTT. "Transcriptional regulation of human 3′-phosphoadenosine 5′-phosphosulphate synthase 2." Biochemical Journal 363, no. 2 (April 8, 2002): 263–71. http://dx.doi.org/10.1042/bj3630263.

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Sulphonation is a fundamental process that is essential for normal growth and development as well as maintenance of the internal milieu. The universal sulphonate donor molecule essential for all sulphoconjugation reactions is adenosine 3′-phosphate 5′-phosphosulphate (PAPS), which is produced from ATP and inorganic sulphate by the action of bifunctional PAPS synthase. There are two isozymes encoded by genes located on chromosome 4 (PAPS synthase 1) and chromosome 10 (PAPS synthase 2). The promoter for PAPS synthase 2 contains neither a TATAAA nor a CCAAT box, although a consensus initiator motif is present. Three human cell lines were used to examine promoter activity after transfection with various lengths of the 5′-flanking region of the PAPS synthase 2 gene fused to a reporter gene. Proximal promoter activity was located between bp −84 and bp −124 upstream of the purported transcription start site. This region contains two GC/GT boxes that are essential for full promoter activity, as indicated by deletion analysis and supported further by mutagenesis. A nuclear extract of SW13 cells, which highly express PAPS synthase 2, contained proteins that bound to probes possessing promoter-specific GC/GT boxes. Furthermore, the presence of specificity protein (Sp) 1, Sp2 and Sp3 proteins in the nuclear extract was confirmed by supershift analysis. Co-transfection experiments using SL2 cells yielded additional support for the involvement of Sp1 in transcriptional regulation of the PAPS synthase 2 gene; the involvement of Sp2 and/or Sp3 remains to be clarified further.
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Hashim, N. A., H. Ya'akob, M. N. M. Rosdi, N. A. Zainol, F. Husin, H. H. Soib, and N. F. Norhisham. "Antioxidant properties of extracts and SPE fractions from Annona muricata leaves." Food Research 4, S2 (April 16, 2020): 71–75. http://dx.doi.org/10.26656/fr.2017.4(s2).s02.

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Annona muricata L. (Magnoliales: Annonaceae) is a tropical plant species known for its edible fruit and well known for the medicinal value. In this study, the antioxidant properties of A. muricata leaves is evaluated for different extracts and fractions. The airdried leaves of A. muricata leaves were successively extracted with n-hexane and methanol. The methanolic crude extract was further semi-purified by utilizing solid-phase extraction (SPE) in a mixture of mobile phase aqueous: methanol to methanol and resulted in four semi-purified fractions (ALM 1 – ALM 4). Antioxidant properties of extracts and fractions were evaluated by free radical scavenging activity against 1,1-Diphenyl-2- picrylhydrazyl (DPPH) radicals comparing with standard ascorbic acid, quercetin, and catechin. Results indicated that methanolic extracts showed exceptionally higher radical scavenging activity compared with n-hexane crude extract with IC50 44.21 µg/mL and 302.41 µg/mL, respectively. Meanwhile, fractions ALM 2 (aqueous: methanol; 50: 50) exhibited the highest scavenging activity with the IC50 of 12.46 µg/mL followed by ALM 1 (aqueous: methanol; 80: 20) with 51.44 µg/mL, ALM 3 (aqueous: methanol; 20: 80) with 54.39 µg/mL and ALM 4 (100% methanol) with 89.02 µg/mL, respectively. In conclusion, ALM 2 could be potentially applied as a natural antioxidant agent in both food, nutraceuticals or pharmaceuticals fields for health promotion. However, ALM 2 has to be further purified to study the constituents which possibly condensed mainly with phenolic and flavonoids that known to possess the highest antioxidant effects.
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Dai, De-shu, Xiang Liu, Yang Yang, Xiao-mei Luo, Ren-xian Tang, Zhong-cheng Yin, and Hong-qi Ren. "Protective Effect of Salvia Przewalskii Extract on Puromycin-Induced Podocyte Injury." American Journal of Nephrology 42, no. 3 (2015): 216–27. http://dx.doi.org/10.1159/000440851.

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Background: To determine the effect of Salvia przewalskii extract (SPE) from total phenolic acids on puromycin aminonucleoside (PAN)-induced rat podocyte injury. Methods: The rats were divided into groups that were treated with either PAN only or PAN followed by tacrolimus or SPE. We evaluated the effects of SPE on podocyte injury 5, 10, 15 and 21 days following treatment. Results: (1) Proteinuria was observed starting on day 5 in all groups. The peak levels of proteinuria differed among the groups with tacrolimus and high-dose SPE, which significantly decreased proteinuria relative to the PAN and low- and medium-dose SPE groups. The proteinuria in each group decreased by day 15 and returned to a normal level by day 21. (2) H&E and PAS staining revealed no abnormality in glomerular morphology. With electron microscopy, we observed foot process effacement in the rats of all groups starting on day 5, but rats in the tacrolimus and high-dose SPE groups exhibited a lower degree. (3) IHC staining of nephrin and podocin revealed unaffected expression and better linear distributions in the high-dose SPE and tacrolimus groups. Western blot analysis confirmed that SPE could improve the expression of proteins. (4) The mRNA levels of nephrin and podocin in the tacrolimus and high-dose SPE groups were significantly higher than that in the others. Conclusion: In our study, we first demonstrated the ability of SPE to reduce proteinuria, preserve the morphology and structure of podocytes and retain the levels of slit diaphragm proteins on PAN-induced rat podocytes injury.
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Subramanian, K., G. Harivignesh, and A. Jeevitha. "The in vitro release features of 5-Fluorouracil from tablets with chitosan, soy protein extract and chitosan-soyprotein extract blend as carriers and their thermal degradation characteristics." Research Journal of Chemistry and Environment 25, no. 7 (June 25, 2021): 104–13. http://dx.doi.org/10.25303/257rjce10421.

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Natural polymers are finding widespread applications in drug delivery, scaffold fabrication, bio plastic production, food packaging, wound dressing etc. due to their availability, biodegradability, biocompatibility, renewable nature, ease of modification to achieve the desirable properties etc. In the present study, the commercially available soy protein extract (SPE), chitosan(CSN) and their physical blend(CSN-SPE) have been chosen as drug carrier matrices to campare their in vitro drug release features in simulated intestinal fluid for controlled release applications taking 5-fluorouracil (5-FU) as a typical drug. The percentages of 5-FU released from the SPE, CSN and CSN-SPE tablets as a function of time were quantified by reverse phase High Performance Liquid Chromatography using KH2PO4 solution (pH 6.8) as the mobile phase and C-18 column as the stationery phase. The observed drug release features were found to be different for these polymer carriers. The percentages of drug released during the initial periods upto 60 min were less in the CSN-SPE tablet than those observed for CSN and SPE tablets. This implied that the drug release rate can be modified by the proper choice of natural polymers in the blends as carriers. The thermal degradation characteristics of CSN, SPE and CSN-SPE blend and their 5-FU tablets were also analysed by simultaneous Thermogravimetry (TG) and Differential Thermal Analysis (DTA). Comparative analysis of the TG and DTA traces of these polymers and their 5-FU tablets implied that there may be a drug-matrix interaction. This along with different degrees of swellability and degradability of these polymers might account for the differences in the drug release features. The structures of CSN, SPE and CSN-SPE blend were characterized by FT-IR spectroscopy.
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Dissertations / Theses on the topic "Extrakce SPE"

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Grulichová, Hana. "Extrakce vybraných flavonoidů bezu černého pro potravinářské účely." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2010. http://www.nusl.cz/ntk/nusl-216653.

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Amount of rutin and quercetin in bark and leaves from different type of Sambucus nigra was determined in this diploma thesis. Records of amounts were compared with amounts in significant sources of these flavonoids. Matters from raw matrix were obtained with pressurized solvent extraction (PSE) and pressurized hot water extraction (PHWE). There was use temperature 120°C, pressure 150 bar, three times 5-min cycles for PSE. There were used 80°C, 150 bar, three 5-min cycles for rutin extracted with PHWE and the same condition were used for extraction of quercetin only the temperature was changed to 100 °C. Analysis of rutin and quercetin were carry out high performance liquid chromatography (HPLC) with diode array detection (DAD), where was used SUPELCOSILTM LC 8DB column (5µm; 250 x 4.6 mm). Methanol: water: formic acid (36: 61.5: 2.5, pH 2.17 2.28) was used like a mobile phase. The flow of the mobile phase was set up 0.7 ml/min. Size of sample was 10 µl. The most amount of rutin was determined in the leaves of wild kind of Sambucus nigra with methanol extraction and hot water too. Extraction with PHWE was more effectively. There were determined 5.58 mg of rutin in one gram of sample from wild Sambucus nigra. There were determined the smallest amount of rutin in Sambucus nigra Körsör. There was found only 0.13 mg/g with extraction PHWE. The quercetin wasn’t determined in any Sambucus nigra leaves. There were found both of the flavonoids (rutin and quercetin) in the branch of Sambucus nigra. The rutin was determined in the small amount in wild kind but it was found in the important amount in Sambucus nigra cultivar. Whereas the quercetin was found in higher concentration than rutin when was finding the ideal conditions for extraction of branch. The quercetin was chosen like more important in light of amount. In the end the quercetin wasn’t detected in any Sambucus nigra cultivars. The most amount of quercetin was determined in wild sambucus nigra, 0.24 mg/g. The most amount of rutin was found in Sambucus nigra Albida, 2.33 mg/g.
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Kosárová, Hedvika. "Aplikace prekoncentračních/separačních technik pro stanovení platiny v životním prostředí atomovou spektrometrií." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2013. http://www.nusl.cz/ntk/nusl-216914.

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This thesis deals with optimization of conditions for the determination of platinum by electrothermal atomic absorption spectrometry. The theoretical part describes the occurrence of platinum in different part of the environment, its physical and chemical properties, transport and bioavailability. There is also evaluated appropriate method for determination and preconcentration of platinum. The experimental part describes advance of optimize the measurement conditions for ETA-AAS, further is describes optimization of condition for SPE and work with real samples on which are applied this conditions.
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Blažková, Eva. "Stanovení perfluorovaných sloučenin pomocí separačních metod." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2010. http://www.nusl.cz/ntk/nusl-216600.

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The theoretical part of this diploma thesis consists of current matters regarding the presence of perfluorinated organic compounds in living environment elements. The attention has been focused on perfluoroktanoic acid (PFOA), (PFOS), and (FOSA). Physical-chemical characteristics of these organic pollutants and their toxicological and environmental aspects have been described. Possible ways of the pollutants analytical determination have been specified. The experimental part has explored effects of extraction techniques (sonication, pressurized solvent extraction, solid-phase extraction) used for PFAS separation from seats of fire soil sample. Identification of the analytes have been achieved by liquid chromatography/mass spektrometry.
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Sedláček, Jaroslav. "Stanovení nonylfenolu a jeho izomerů ve vodách." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2013. http://www.nusl.cz/ntk/nusl-216949.

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This diploma thesis is focused on the issue of nonylphenol, degradation product of surfactants. Nonylphenol however most often arises in wastewater treatment plants predominantly during the microbial degradation of nonylphenol ethoxylates used in industry. It is a substance highly bioaccumulative, toxic predominantly to aquatic organisms. Furthermore, it belongs among hormone disruptors. The detailed research was prepared, on the basis which experimental part of diploma thesis was solved. Nonylphenol was determined in samples of the wastewater. The solid phase extraction (SPE) was used for the isolation of the analyte and purification of the extract. The final determination was performed on the gas chromatography with tandem mass spectrometry with time of flight analyzer (TOF). All steps of the preanalytical and the analytical procedure were optimized.
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Benešová, Markéta. "Stanovení léčiv pomocí HPLC s různými typy detektorů." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2011. http://www.nusl.cz/ntk/nusl-216704.

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This diploma thesis deals with the determination of macrolide antibiotics in wastewater, especially with erythromycin, clarithromycin and roxithromycin. In this time are these pharmaceuticals prescribed quite frequently. Solid phase extraction (SPE) was used for the isolation and the purification of selected analytes from an aqueous matrix; as the suitable procedure was found the using Oasis HLB cartridges. High performance liquid chromatography with mass spectrometry detection (HPLC-MS) was optimized for its analysis of selected pharmaceuticals. The optimized method was used for the determination of pharmaceuticals in real water samples, which was taken at the inflow and the outflow of the urban wastewater treatment plant in Brno-Modřice.
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Vydrová, Lucie. "Využití separačních metod pro studium biologicky aktivních látek ve vodách." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2011. http://www.nusl.cz/ntk/nusl-233344.

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Pharmaceuticals are biological active compounds with different functional groups, physico-chemical and biological properties. These chemical compounds are called as “new contaminants” which cumulate in various environmental components. These contaminants input to environment from industrial processes, hospitals and health care institutions or household sources and these pollutants can to negatively interact with environmental components. Pharmaceuticals are separated according to structure and their effects to live organisms. On the basis of drug consumption in Czech Republic the non-steroidal anti-inflammatory drugs are the most using pharmaceuticals, because these drugs can be obtain without prescriptions. The choosing analgesics for study were monitored in waste water from waste waters treatment plant (WWTP Brno – Modřice) and in surface water from two sampling sites of river Kretinka. Pharmaceuticals were monitored in surface waters in Czech Republic, in Scotland (river Thurso) and in Taiwan (river Erren, Agongdian, Yanshuei and canal of Tainan) Solid phase extraction (SPE) is used for extraction of study pharmaceutical from water system. The high performance liquid chromatography (HPLC) with diode array detection or mass spectrometry was used for determination of drugs in surface waters from Czech Republic. The water samples from Scotland and Taiwan were analysed and the high performance liquid chromatography with mass spectrometry (HPLC/MS) was used for determination of pharmaceuticals. The method of HPLC/MS enables the determination of study compounds in the very low range of concentrations (ng ? l-1). All monitored pharmaceuticals were identified and quantified in water samples from river Kretinka in Czech Republic, river Thurso (Scotland) and rivers Erren, Agongdian, Yanshuei and canal of Tainan in Taiwan and the obtained data were compared.
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Vašíčková, Petra. "Stanovení reziduí léčiv pomocí separačních metod." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2010. http://www.nusl.cz/ntk/nusl-216632.

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Nonsteroidal anti-inflammatory substances became a very frequently used and constantly evolved group of the drugs, particularly in a human medicine. The risk of their penetration into the environment, especially to the water environment, is rising during the recent years. The diploma thesis is focused on a selection of appropriate separation method and optimization of analytical procedure for the identification and determination of the non-steroidal anti-inflammatory drugs in sewage and surface waters. Salicylic acid, ketoprofen, diclofenac and ibuprofen were chosen from the wide range of NSAIDs as the most widespread agents of this drugs group in the medical practice. The method was optimized and elaborated using the model water samples. This method was used for determination of the analytes contained in the real water samples. Waste water samples were taken from the large-scale wastewater treatment plant in Brno-Modřice and surface water samples were taken from the Highlands river Křetínka. Solid phase extraction (SPE) was used for the real samples treatment and preconcentration, the determination was performed using the high performance liquid chromatography with mass spectroscopy method (LC-MS).
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Stehlík, Pavel. "Stanovení vybraných strobilurinových pesticidů v ječmeni, sladu a pivu." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2008. http://www.nusl.cz/ntk/nusl-216412.

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This diploma work is aimed determination of strobilurine pesticide in barly, malt and berr. Identifikation of strobilurine was made according to mass spectra library and base of commercialy standard. The next quantifikation in samples was made. The work consist of three main parts refer about problems. In therotical part is the method of plant, grown protection. This part is about pesticides and their fission, history and effects. In experimental part is method for determination strobilurine. In part results and discussion are all result and data in tables a graphs. At the end is sumed up result this work.
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Allers, NJ, L. Hay, PJ Schutte, ML Steinmann, Plooy S. du, and LH Bohmer. "Long-term effects of a low dosage of grape seed proanthocyanidin extract on blood pressure in spontaneously hypertensive rats." South African Journal of Science, 2008. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1000779.

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Most studies on the antihypertensive effects of bioflavonoids have reported short-term effects (within 7 weeks) at high concentrations (40–100 mg kg–1 day–1). The present study by contrast has investigated long-term effects of low concentrations of bioflavonoids on arterial blood pressure and left ventricular performance in spontaneously hypertensive rats (SHR). Spontaneously hypertensive rats were divided into a treated (n = 16) and a control (n = 16) group. The treated group received daily a grape seed proanthocyanidin extract (GSPE) at a concentration of 4mg kg–1day–1over six months. Arterial blood pressure (ABP) was measured once monthly on six randomly selected rats from both groups using an indirect tail-cuff method. After three months, the remaining rats underwent catheterizations to measure left ventricular performance and aortic pressure. The possible role of nitric oxide (NO) in the effects of GSPE was investigated by blocking NO synthase with N-nitro-Larginine methyl ester (L-NAME). Animals in the treated group had significantly lower arterial end-diastolic pressures (AEDP) after three months of treatment compared with control animals, and this trend continued until six months. In the treated group, left ventricular systolic pressures (LVSP) were reduced by 16.6% (P = 0.005), their dP/dtmax (left ventricular pressures) were reduced by 19.7% (P = 0.050), and cardiac work was reduced by 22.0% (P = 0.045) at the end of three months. Treatment with L-NAMEsuggested a contribution of NO to the effects of GSPE on blood pressure. A low concentration of GSPE administered over six months lowered AEDP significantly, and the L-NAME response suggested that NO is involved. The decreased AEDP had a lowering effect on left ventricular dynamics of hypertensive rats.
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Thembo, MK, SR Magano, and LJ Shai. "The effects of aqueous root extract of Senna italica subsp. arachoides on the feeding performance of Hyalomma marginatum rufipes adults." African Journal of Biotechnology, 2010. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001202.

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The effects of aqueous root extracts of Senna italica subsp. arachoides on the feeding performance of adults of Hyalomma marginatum rufipes in three consecutive infestations of rabbits were studied under laboratory conditions. Rabbits were divided into treatment group (n = 3), fed aqueous root extracts and rabbit pellets while the control group (n = 3) was fed with rabbit pellets and given distilled water only. Ticks that infested the treatment rabbits fed poorly, taking significantly longer feeding periods (P < 0.05) to acquire the bloodmeal, and having significantly reduced engorgement weights (P < 0.05) compared to those that fed on the control rabbits during the first and second infestations. These results suggest that aqueous root extracts of S. italica subsp. arachoides reduced the feeding performance of H. marginatum rufipes adults.
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Books on the topic "Extrakce SPE"

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Williams, Belinda. Translation with commentary of an extract from Geh doch wieder rüber!: Jana wei nicht, wohin sie gehört by -ky. 1996.

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Ecklund, Elaine Howard, David R. Johnson, Brandon Vaidyanathan, Kirstin R. W. Matthews, Steven W. Lewis, Robert A. Thomson, and Di Di. Secularity and Science. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780190926755.001.0001.

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In order to take an in-depth look at the relationship between science and religion around the world, the authors of this book completed the most comprehensive international study of scientists’ attitudes toward religion ever undertaken, surveying more than twenty thousand scientists and conducting in-depth interviews with over six hundred of them. From this wealth of data, the authors extract the real story of the relationship between science and religion in the lives of scientists around the world. Secularity and Science makes four big claims: There are more religious scientists than we might think. Religion and science sometimes overlap in scientific work. Scientists—even some atheist scientists—see spirituality in science. And finally, the idea that religion and science must conflict is an invention of the West. Throughout the chapters, the book couples nationally representative survey data with captivating stories of individual scientists, whose experiences highlight these important themes in the data. Secularity and Science leaves inaccurate assumptions about science and religion behind, and offers a new, more nuanced understanding of how science and religion interact and how they can be integrated for the common good.
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Kaplan, Gisela. Bird Minds. CSIRO Publishing, 2015. http://dx.doi.org/10.1071/9781486300198.

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In her comprehensive and carefully crafted book, Gisela Kaplan demonstrates how intelligent and emotional Australian birds can be. She describes complex behaviours such as grieving, deception, problem solving and the use of tools. Many Australian birds cooperate and defend each other, and exceptional ones go fishing by throwing breadcrumbs in the water, extract poisonous parts from prey and use tools to crack open eggshells and mussels. The author brings together evidence of many such cognitive abilities, suggesting plausible reasons for their appearance in Australian birds. Bird Minds is the first attempt to shine a critical and scientific light on the cognitive behaviour of Australian land birds. In this fascinating volume, the author also presents recent changes in our understanding of the avian brain and links these to life histories and longevity. Following on from Gisela’s well-received books, Australian Magpie and Tawny Frogmouth, as well as two earlier titles on birds, Bird Minds contends that the unique and often difficult conditions of Australia's environment have been crucial for the evolution of unusual complexities in avian cognition and behaviour. This book is written for a general audience, especially amateur ornithologists and naturalists but it will equally appeal to specialists in bird behaviour and students working in biology, comparative psychology, cognitive ecology, field ornithology, zoology, aviculture and animal welfare. It will also be of interests to veterinarians, zoo personnel, bird lovers and members of other groups concerned with birds. Recipient of a 2016 Whitley Award commendation for Behavioural Zoology
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Ringuelet, Jorge Abel, and Sonia Zulma Viña, eds. Productos naturales vegetales. Editorial de la Universidad Nacional de La Plata (EDULP), 2013. http://dx.doi.org/10.35537/10915/27885.

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El mundo vegetal es, quizás, el que muestra un abanico de moléculas más diverso y del cual el hombre ha hecho y hace una provechosa utilización. La maquinaria química de un vegetal es tan ingeniosa que asombra al estudiar en su profundidad la estructura, función, metabolismo y regulación de cada molécula identificada y de los innumerables procesos en que participan a nivel celular. Por otra parte, al no contar con el mecanismo de evasión y encontrarse ancladas al suelo o algún otro sustrato, las variadas especies vegetales han necesitado desarrollar mecanismos químicos de defensa que posibilitan su supervivencia frente al ataque de parásitos y herbívoros. A dichos mecanismos ha contribuido, sin lugar a dudas, el amplio espectro de sustancias orgánicas propias de los organismos vegetales. A toda esa diversidad de compuestos que el hombre extrae de un vegetal y aprovecha o intenta darle alguna utilización los denominamos productos naturales vegetales. En la elaboración de este texto hemos tratado de describir los más importantes, agrupándolos para un estudio ordenado. Se ha iniciado la obra abarcando una serie de consideraciones generales sobre dichos productos. Seguidamente se han descripto las características estructurales, propiedades, distribución en la naturaleza, funciones en las plantas, actividades biológicas, biosíntesis y métodos de extracción y/o cuantificación de los diferentes productos naturales vegetales. Los grupos a los que se ha hecho referencia son: metabolitos secundarios nitrogenados y/o azufrados, sustancias fenólicas y compuestos terpénicos. Se ha incluido, finalmente, un capítulo donde se trata, en particular, la vinculación entre distintos productos naturales vegetales y la adaptación de las plantas al medio ambiente, como así también su participación en las relaciones bióticas observadas en diferentes sistemas naturales y/o agroecosistemas. El objetivo principal de la obra es resumir los aspectos más importantes de esta área para quien quiera profundizar en el estudio de diversas moléculas orgánicas distribuidas en el mundo vegetal. La misma es el resultado de la experiencia acumulada durante varios años por los docentes del curso Bioquímica y Fitoquímica de la Facultad de Ciencias Agrarias y Forestales de la Universidad Nacional de La Plata. Pretendemos modestamente que sirva de base y guía para los estudiantes de grado en áreas biológicas, como la Ingeniería Agronómica, Ingeniería Forestal, Biología, Ciencias Farmacéuticas y otras que pudieran estar relacionadas a este interesante campo de estudio.
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Book chapters on the topic "Extrakce SPE"

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Barale, R., R. Micheletti, C. Sbrana, I. Glussich, C. Scapoli, and I. Barrai. "N-Acetylcysteine Inhibits Diesel Extract Mutagenicity in the Ames Test and SCE Induction in Human Lymphocytes." In Antimutagenesis and Anticarcinogenesis Mechanisms III, 149–60. Boston, MA: Springer US, 1993. http://dx.doi.org/10.1007/978-1-4615-2984-2_14.

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Beyer, Dirk, and Sudeep Kanav. "An Interface Theory for Program Verification." In Leveraging Applications of Formal Methods, Verification and Validation: Verification Principles, 168–86. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-61362-4_9.

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Abstract Program verification is the problem, for a given program $$P$$ and a specification $$\phi $$, of constructing a proof of correctness for the statement “program $$P$$ satisfies specification $$\phi $$” ($$P \models \phi $$) or a proof of violation ("Equation missing"). Usually, a correctness proof is based on inductive invariants, and a violation proof on a violating program trace. Verification engineers typically expect that a verification tool exports these proof artifacts. We propose to view the task of program verification as constructing a behavioral interface (represented e.g. by an automaton). We start with the interface $$I_{P}$$ of the program itself, which represents all traces of program executions. To prove correctness, we try to construct a more abstract interface $$I_{C}$$ of the program (overapproximation) that satisfies the specification. This interface, if found, represents more traces than $$I_{P}$$ that are all correct (satisfying the specification). Ultimately, we want a compact representation of the program behavior as a correctness interface $$I_{C}$$ in terms of inductive invariants. We can then extract a correctness witness, in standard exchange format, out of such a correctness interface. Symmetrically, to prove violation, we try to construct a more concrete interface $$I_{V}$$ of the program (underapproximation) that violates the specification. This interface, if found, represents fewer traces than $$I_{P}$$ that are all feasible (can be executed). Ultimately, we want a compact representation of the program behavior as a violation interface $$I_{V}$$ in terms of a violating program trace. We can then extract a violation witness, in standard exchange format, out of such a violation interface. This viewpoint exposes the duality of these two tasks — proving correctness and violation. It enables the decomposition of the verification process, and its tools, into (at least!) three components: interface synthesizers, refinement checkers, and specification checkers. We hope the reader finds this viewpoint useful, although the underlying ideas are not novel. We see it as a framework towards modular program verification.
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Harris, E. L. V. "Concentration of the extract." In Protein Purification Techniques. Oxford University Press, 2001. http://dx.doi.org/10.1093/oso/9780199636747.003.0010.

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A concentration step is frequently required after a clarified solution of the protein has been obtained, in order to aid subsequent purification steps. This is particularly important when the protein is obtained in culture medium from cells (e.g. bacteria or tissue culture cells). Concentration of the protein solution results in a decreased volume, as well as a higher protein concentration. Clearly a smaller volume of solution is easier to handle in subsequent steps, such as precipitation or loading onto a chromatography column. Higher protein concentration minimize protein losses by non-specific adsorption to container walls or column matrices. In addition many subsequent purification steps require a minimum protein concentration to be effective, for example, precipitation is more efficient at concentrations above 100 μg/ml, whilst for adsorption chromatography (e.g. ion exchange or affinity) the concentration of protein must be greater than the dissociation constant. Concentration is achieved by removal of water and other small molecules: (a) By addition of a dry matrix polymer with pores that are too small to allow entry of the large protein molecules (Section 2). (b) By removal of the small molecules through a semi-permeable membrane which will not allow the large molecules through (i.e. ultrafiltration, Section 3). (c) By removal of water in vacua (i.e. lyophilization, Section 4). Precipitation can also be used to concentrate proteins if the pellet is redissolved in a smaller volume, and in addition often results in some degree of purification of the protein of interest. However, as mentioned above precipitation is more effective if the total protein concentration is above 100 μg/ml (see Section 6). Two-phase aqueous extraction can also be used to concentrate the protein, with an associated degree of purification (see Section 7). This is one of the simplest and quickest methods of concentrating solutions of proteins, requiring minimal apparatus. A dry matrix polymer, such as Sephadex, is added to the protein solution and allowed to absorb the water and other small molecules; the pores within the matrix are too small to allow the protein to be absorbed.
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Gaskell, Elizabeth. "Chapter X." In The Life of Charlotte Brontë. Oxford University Press, 2009. http://dx.doi.org/10.1093/owc/9780199554768.003.0027.

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Soon after she returned home, her friend paid her a visit. While she stayed at Haworth, Miss Brontë wrote the letter from which the following extract is taken. The strong sense and right feeling displayed in it on the subject of friendship, sufficiently account...
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Lagerlund, Terrence D., Devon I. Rubin, and Jasper R. Daube. "Volume Conduction." In Clinical Neurophysiology, 33–52. Oxford University Press, 2009. http://dx.doi.org/10.1093/med/9780195385113.003.0003.

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This chapter reviews the principles of volume conduction as applied to the potentials recorded in clinical neurophysiologic studies. Knowledge of these principles is necessary for proper interpretation of EEG, EMG, NCS, SEP, VEP, and BAEP recordings in order to extract information concerning the function and location of the neural structures that generate the recorded activity or waveforms.
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Gerard, Philip. "Rose of the Rebellion." In The Last Battleground, 168–75. University of North Carolina Press, 2019. http://dx.doi.org/10.5149/northcarolina/9781469649566.003.0025.

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One of the most glamorous and successful spies for the Confederacy, Rose O’Neale Greenhow uses her Washington society connections to extract sensitive military information from infatuated officers. She acquires the U.S. Army’s plans for the Battle of Manassas and passes them on the Gen. P.G.T. Beauregard. Her treason is discovered by Allan Pinkerton and she is imprisoned, first in her own home, later at Old Capitol Prison. Released for want of evidence, she sails to England as an envoy of the Confederacy, writes a book about her imprisonment, and sails home aboard Condor, a fast blockade runner, bearing the gold she earned form the sale of her book. In the stormy midnight waters off Cape Fear, Condor founders on a shoal, and she insists on being ferried to shore in a small boat-which capsizes. Her body washes ashore near Fort Fisher and she is buried in a city of strangers.
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Russell, Conn. "Transthoracic echocardiography, sonoanatomy, and standard views." In Focused Intensive Care Ultrasound, edited by Marcus Peck and Peter Macnaughton, 35–46. Oxford University Press, 2019. http://dx.doi.org/10.1093/med/9780198749080.003.0005.

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This chapter will describe all the standard focused cardiac ultrasound (FoCUS) views, including the anatomical structures one should expect to see and, importantly, how to obtain and optimize these images to extract the best diagnostic information. It will discuss the cardiac axis, probe handling, and pitfalls in image acquisition. The advanced section will introduce additional views, which are used in comprehensive echocardiography, because some are obtained inadvertently during FoCUS scanning and can be used to guide the operator back to standard views.
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Ricketts, Mitch. "Making Health Information Personal." In Packaging Digital Information for Enhanced Learning and Analysis, 1–36. IGI Global, 2014. http://dx.doi.org/10.4018/978-1-4666-4462-5.ch001.

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Research suggests people often fail to understand the personal relevance of generalized health information. To make health information more meaningful, communicators can employ anecdotes that take the form of instructive stories about the illnesses or injuries of particular people. Appropriate anecdotes may help audiences internalize health information by triggering insights such as: “I see how that could happen to me…I’d better take action.” Vivid anecdotes appear to activate many of the same neurological pathways that help us extract meaning from direct experience and observation. By eliciting vivid imagery, provoking deep thought, and forging lasting memories, anecdotes may shape beliefs and behaviors to nearly the same extent as a lived event. This chapter explores methods for integrating anecdotes into health messages to increase personal relevance and prompt important changes in health-related behavior.
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Vivitsou, Marianna. "Values and Purposes in Digital Pedagogies." In Innovative Applications of Online Pedagogy and Course Design, 25–41. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-5466-0.ch002.

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This chapter aims to use metaphor analysis in order to discuss and analyze the patterns resulting from Finnish and Greek language and science teachers' (N= 8) interviews on how they integrate digital technologies into classroom practices. To this end, the author performs a meta-analysis of findings from two previous studies on teacher's metaphorical thinking. This is done through the theoretical lens of two cognitive science related theories (conceptual metaphor and conceptual integration or blending theory) and a theory originating from philosophy of language (semantic theory of metaphor). To meet the ends of the study, the author examined the input sources that inform the teachers' thinking in order to extract single-scope and double-scope networks of metaphors. In this way, we can see what values and purposes emerge out of the teachers' choices when digital pedagogies are introduced into the classroom practice.
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Gutiérrez, Jesús Manuel Puentes, Salvador Sánchez-Alonso, Miguel-Angel Sicilia, and Elena García Barriocanal. "Predicting Patterns in Hospital Admission Data." In Advances in Bioinformatics and Biomedical Engineering, 322–36. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-2607-0.ch013.

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Predicting patterns to extract knowledge can be a tough task but it is worth. When you want to accomplish that task you have to take your time analysing all the data you have and you have to adapt it to the algorithms and technologies you are going to use after analysing. So you need to know the type of data that you own. When you have finished making the analysis, you also need to know what you want to find out and, therefore, which methodologies you are going to use to accomplish your objectives. At the end of this chapter you can see a real case making all that process. In particular, a Classification problem is shown as an example when using machine learning methodologies to find out if a hospital patient should be admitted or not in Cardiology department.
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Conference papers on the topic "Extrakce SPE"

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Petcavich, Robert, Hisham A. Nasr-El-Din, Guanqun Wang, and Roy T. Estrada, III. "A New Solvent to Extract Bitumen from Oil Sands." In SPE Heavy Oil Conference-Canada. Society of Petroleum Engineers, 2013. http://dx.doi.org/10.2118/165465-ms.

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"In Vitro Antimicrobial Mode of Action of Cynodon Dactylon (L.) Pers. SPE Extract Against Selected Gram Positive Bacterial Pathogens." In International Conference on Civil, Biological and Environmental Engineering. International Institute of Chemical, Biological & Environmental Engineering, 2014. http://dx.doi.org/10.15242/iicbe.c514543.

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Tollefsen, Svein, Na Jia, Jinglin Gao, Hongying Zhao, Tao Yang, Jarle Larsen, Jon Knut Ringen, and Afzal I. Memon. "A New Method to Extract In-situ Bitumen From Core Samples." In SPE Heavy Oil Conference-Canada. Society of Petroleum Engineers, 2013. http://dx.doi.org/10.2118/165561-ms.

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Belakshe, Ravikant, and Lalit Salgaonkar. "Application of Plant Extract for Inhibiting Corrosion in Acidic Environments." In SPE International Oilfield Corrosion Conference and Exhibition. Society of Petroleum Engineers, 2014. http://dx.doi.org/10.2118/169637-ms.

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Wachikwu-Elechi, Virtue Urunwo, Sunday Sunday Ikiensikimama, Joseph Atubokiki Ajienka, Onyewuchi Emmanuel Akaranta, and Okon Efiong Okon. "Suppression Performance of an Unmodified Bio-Extract for Simulated Offshore Gas Hydrate Mitigation." In SPE Annual Technical Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/206304-ms.

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Abstract Gas hydrate inhibition through the use of chemicals has been ongoing over the years and these chemicals are toxic, synthetic and expensive, adding to the cost of doing oil and gas business, and also leads to environmental degradation. The call for greener environment has necessitated the search for more eco-friendly gas hydrate inhibitors. This paper takes a look at the use of a bio-extract in its unmodified state to inhibit gas hydrate using a locally made mini flow loop for gas hydrate studies. The bio extract was compared to a conventional gas hydrate inhibitor 2-Di(methylaminoethyl)methacrylate (2-DMAEM). For all the weight percentages considered (0.01-0.05wt%), the bio-extract had better pressure profiles. At the end of the experiment which lasted for 120 minutes, this is attributed to the fact that the pressures in the system were more regulated which prevented rapid gas dissolution in water. The Bio-extract is plant based, locally available in the commercial quantity and is eco-friendly so it should be harnessed as gas hydrate inhibitors in lieu of the expensive and imported conventional hydrate inhibitor 2-DMAEM which non-eco-friendly.
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Lawama, Ayman. "Processing of atmospheric signals to extract the lightning range." In SPIE Proceedings, edited by Ryszard S. Romaniuk. SPIE, 2006. http://dx.doi.org/10.1117/12.675082.

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Karmaker, Kulada, and Brij B. Maini. "A Stochastic Approach to Extract Vapex Related Dispersion Coefficients from Magnetic Resonance Images." In SPE Annual Technical Conference and Exhibition. Society of Petroleum Engineers, 2003. http://dx.doi.org/10.2118/84198-ms.

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Elechi, Virtue Urunwo, Sunday Sunday Ikiensikimama, Joseph Atubokiki Ajienka, Onyewuchi Emmanuel Akaranta, and Okon Efiong Okon. "Zingiberales Extract ZE: A Locally Sourced Natural Compound as Gas Hydrate Inhibitor." In SPE Nigeria Annual International Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/207154-ms.

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Abstract Gas hydrates are impediments to flow of gas and oil and its avoidance and mitigation is key to oil and gas operators. Mitigation via chemical controls is more suitable for marine environments. The effectiveness of 2wt% of an extract from the plant order, Zingiberales has been compared to that of Mono-Ethylene Glycol in a simulated offshore laboratory mini flow loop of 0.5-inch ID. The results from final pressure shows the value of ZE to be 107 psi while that of the MEG was 99 psi. The ∆P for ZE was 43 psi while that of MEG was 51 psi. The difference in ∆P was 8psi more than that of MEG. The Inhibition Capacity (%) values showed ZE to have performed better with a value of 62.28% while that of MEG was 55.26%. ZE had an Inhibition Capacity that was 7.02% more than that of MEG which is mostly imported and is termed a toxic alcohol, meaning that it is both human and environmentally hazardous. ZE therefore should be considered for development as a gas hydrate inhibitor.
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Pogribny, Wlodzimierz, Igor Rozhankivsky, and Tadeusz Leszczynski. "Influence of short signals parameters on extract them from noise." In SPIE Proceedings, edited by Ryszard S. Romaniuk. SPIE, 2006. http://dx.doi.org/10.1117/12.674966.

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Chandler, Kody, Michael Dykalski, John Wolfe, Sean Frisky, and William Duffy. "Dump, Condition, Dilute: Utilizing High Voltage Technology to Extract Solids from Drilling Fluid." In SPE/IADC International Drilling Conference and Exhibition. Society of Petroleum Engineers, 2019. http://dx.doi.org/10.2118/194102-ms.

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Reports on the topic "Extrakce SPE"

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Hunter, Fraser, and Martin Carruthers. Iron Age Scotland. Society for Antiquaries of Scotland, September 2012. http://dx.doi.org/10.9750/scarf.09.2012.193.

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The main recommendations of the panel report can be summarised under five key headings:  Building blocks: The ultimate aim should be to build rich, detailed and testable narratives situated within a European context, and addressing phenomena from the longue durée to the short-term over international to local scales. Chronological control is essential to this and effective dating strategies are required to enable generation-level analysis. The ‘serendipity factor’ of archaeological work must be enhanced by recognising and getting the most out of information-rich sites as they appear. o There is a pressing need to revisit the archives of excavated sites to extract more information from existing resources, notably through dating programmes targeted at regional sequences – the Western Isles Atlantic roundhouse sequence is an obvious target. o Many areas still lack anything beyond the baldest of settlement sequences, with little understanding of the relations between key site types. There is a need to get at least basic sequences from many more areas, either from sustained regional programmes or targeted sampling exercises. o Much of the methodologically innovative work and new insights have come from long-running research excavations. Such large-scale research projects are an important element in developing new approaches to the Iron Age.  Daily life and practice: There remains great potential to improve the understanding of people’s lives in the Iron Age through fresh approaches to, and integration of, existing and newly-excavated data. o House use. Rigorous analysis and innovative approaches, including experimental archaeology, should be employed to get the most out of the understanding of daily life through the strengths of the Scottish record, such as deposits within buildings, organic preservation and waterlogging. o Material culture. Artefact studies have the potential to be far more integral to understandings of Iron Age societies, both from the rich assemblages of the Atlantic area and less-rich lowland finds. Key areas of concern are basic studies of material groups (including the function of everyday items such as stone and bone tools, and the nature of craft processes – iron, copper alloy, bone/antler and shale offer particularly good evidence). Other key topics are: the role of ‘art’ and other forms of decoration and comparative approaches to assemblages to obtain synthetic views of the uses of material culture. o Field to feast. Subsistence practices are a core area of research essential to understanding past society, but different strands of evidence need to be more fully integrated, with a ‘field to feast’ approach, from production to consumption. The working of agricultural systems is poorly understood, from agricultural processes to cooking practices and cuisine: integrated work between different specialisms would assist greatly. There is a need for conceptual as well as practical perspectives – e.g. how were wild resources conceived? o Ritual practice. There has been valuable work in identifying depositional practices, such as deposition of animals or querns, which are thought to relate to house-based ritual practices, but there is great potential for further pattern-spotting, synthesis and interpretation. Iron Age Scotland: ScARF Panel Report v  Landscapes and regions:  Concepts of ‘region’ or ‘province’, and how they changed over time, need to be critically explored, because they are contentious, poorly defined and highly variable. What did Iron Age people see as their geographical horizons, and how did this change?  Attempts to understand the Iron Age landscape require improved, integrated survey methodologies, as existing approaches are inevitably partial.  Aspects of the landscape’s physical form and cover should be investigated more fully, in terms of vegetation (known only in outline over most of the country) and sea level change in key areas such as the firths of Moray and Forth.  Landscapes beyond settlement merit further work, e.g. the use of the landscape for deposition of objects or people, and what this tells us of contemporary perceptions and beliefs.  Concepts of inherited landscapes (how Iron Age communities saw and used this longlived land) and socal resilience to issues such as climate change should be explored more fully.  Reconstructing Iron Age societies. The changing structure of society over space and time in this period remains poorly understood. Researchers should interrogate the data for better and more explicitly-expressed understandings of social structures and relations between people.  The wider context: Researchers need to engage with the big questions of change on a European level (and beyond). Relationships with neighbouring areas (e.g. England, Ireland) and analogies from other areas (e.g. Scandinavia and the Low Countries) can help inform Scottish studies. Key big topics are: o The nature and effect of the introduction of iron. o The social processes lying behind evidence for movement and contact. o Parallels and differences in social processes and developments. o The changing nature of houses and households over this period, including the role of ‘substantial houses’, from crannogs to brochs, the development and role of complex architecture, and the shift away from roundhouses. o The chronology, nature and meaning of hillforts and other enclosed settlements. o Relationships with the Roman world
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