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Добірка наукової літератури з теми "Acetone monitoring"

Автор: Grafiati
Опубліковано: 14 березня 2023

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Статті в журналах з теми "Acetone monitoring"

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Annerino, Anthony, Manoj Srinivasan, and Perena Gouma. "Wearable Acetone Monitoring." ECS Meeting Abstracts MA2022-01, no. 53 (July 7, 2022): 2185. http://dx.doi.org/10.1149/ma2022-01532185mtgabs.

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Анотація:
Most research aimed at measuring biomarkers on the skin is only concerned with sensing chemicals in sweat, but these methods are not truly noninvasive because they require substantial and often inconvenient amounts of sweat to get a reading. This project aims to create a truly non-invasive wearable sensor that continuously detects the gaseous acetone (a biomarker related to metabolic disorders) that ambiently comes out of the skin. Composite films of the intrinsically conducting polymer polyaniline and cellulose acetate, previously shown to exhibit a mechano-chemical actuation response to gaseous acetone, were tested for electrical response to low concentrations of gaseous acetone and possible interferents in dry, breathing quality air at room temperature.
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Fujino, A., T. Satoh, T. Takebayashi, H. Nakashima, H. Sakurai, T. Higashi, H. Matumura, H. Minaguchi, and T. Kawai. "Biological monitoring of workers exposed to acetone in acetate fibre plants." Occupational and Environmental Medicine 49, no. 9 (September 1, 1992): 654–57. http://dx.doi.org/10.1136/oem.49.9.654.

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3

Uchida, Yoko, Toshio Kawai, Tomojiro Yasugi, and Masayuki Ikeda. "Personal monitoring sampler for acetone vapor exposure." Bulletin of Environmental Contamination and Toxicology 44, no. 6 (June 1990): 900–904. http://dx.doi.org/10.1007/bf01702181.

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4

Mishra, Rajneesh Kumar, Vipin Kumar, Le Gia Trung, Gyu Jin Choi, Jeong Won Ryu, Sagar M. Mane, Jae Cheol Shin, Pushpendra Kumar, Seung Hee Lee, and Jin Seog Gwag. "WS2 Nanorod as a Remarkable Acetone Sensor for Monitoring Work/Public Places." Sensors 22, no. 22 (November 8, 2022): 8609. http://dx.doi.org/10.3390/s22228609.

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Here, we report the synthesis of the WS2 nanorods (NRs) using an eco-friendly and facile hydrothermal method for an acetone-sensing application. This study explores the acetone gas-sensing characteristics of the WS2 nanorod sensor for 5, 10, and 15 ppm concentrations at 25 °C, 50 °C, 75 °C, and 100 °C. The WS2 nanorod sensor shows the highest sensitivity of 94.5% at 100 °C for the 15 ppm acetone concentration. The WS2 nanorod sensor also reveals the outstanding selectivity of acetone compared to other gases, such as ammonia, ethanol, acetaldehyde, methanol, and xylene at 100 °C with a 15 ppm concentration. The estimated selectivity coefficient indicates that the selectivity of the WS2 nanorod acetone sensor is 7.1, 4.5, 3.7, 2.9, and 2.0 times higher than xylene, acetaldehyde, ammonia, methanol, and ethanol, respectively. In addition, the WS2 nanorod sensor also divulges remarkable stability of 98.5% during the 20 days of study. Therefore, it is concluded that the WS2 nanorod can be an excellent nanomaterial for developing acetone sensors for monitoring work/public places.
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Righettoni, Marco, Antonio Tricoli, Samuel Gass, Alex Schmid, Anton Amann, and Sotiris E. Pratsinis. "Breath acetone monitoring by portable Si:WO3 gas sensors." Analytica Chimica Acta 738 (August 2012): 69–75. http://dx.doi.org/10.1016/j.aca.2012.06.002.

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Lombardo, Luca, Nicola Donato, Sabrina Grassini, Alessio Gullino, Kaveh Moulaee, Giovanni Neri, and Marco Parvis. "High Sensitive and Selective Minisensor for Acetone Monitoring." IEEE Transactions on Instrumentation and Measurement 69, no. 6 (June 2020): 3308–16. http://dx.doi.org/10.1109/tim.2020.2967161.

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7

Anderson, Joseph C. "Measuring breath acetone for monitoring fat loss: Review." Obesity 23, no. 12 (November 2, 2015): 2327–34. http://dx.doi.org/10.1002/oby.21242.

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Ivanova, Anastasia M., and Elena O. Kolomina. "Analytical evaluation of breath acetone tubes." Butlerov Communications 61, no. 2 (February 29, 2020): 125–31. http://dx.doi.org/10.37952/roi-jbc-01/20-61-2-125.

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Анотація:
Breath analysis provides opportunities for further development of precise and quick non-invasive diagnostic tools. The important example is the monitoring of metabolic flexibility through the acetone levels in an exhale. Metabolic changes may cause such pathological conditions as metabolic syndrome, type 2 diabetes mellitus and obesity. It is proven that breath acetone levels can indicate the states of ketosis or ketoacidosis. The development of sensitive, selective and easy-to-use tests for breath acetone is a step to personalized diagnostics, preliminary diagnosis and therapeutic control The aim of the research was to evaluate analytical characteristics of acetone breath tubes intended for non-invasive monitoring of metabolic state. The test is designed as an easy-to-blow glass tube, comprising a chemical reagent highly sensitive to acetone. The reagent changes its color from yellow to magenta depending on acetone concentrations. Sensitivity assessment was performed by lab simulation of an exhaled breath with various acetone concentrations. The acetone levels corresponded to a range associated with various metabolic conditions and were controlled by titrimetric method and a portable breath analyzer. Additionally, specificity to a target gas in the presence of water and ethanol vapors was assessed. The results showed a correlation between the acetone concentration and the color gradients of the acetone sensitive reagent. The tubes show no reactions towards water and ethanol vapors.
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Arakawa, Takahiro, Ming Ye, Kenta Iitani, Koji Toma, and Kohji Mitsubayashi. "Acetone Bio-Sniffer (Gas-Phase Biosensor) for Monitoring of Human Volatile Using Enzymatic Reaction of Secondary Alcohol Dehydrogenase." Engineering Proceedings 6, no. 1 (May 20, 2021): 45. http://dx.doi.org/10.3390/i3s2021dresden-10165.

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Анотація:
We developed a highly sensitive acetone bio-sniffer (gas-phase biosensor) based on an enzyme reductive reaction to monitor breath acetone concentration. The acetone bio-sniffer device was constructed by attaching a flow-cell with nicotinamide adenine dinucleotide (NADH)-dependent secondary alcohol dehydrogenase (S-ADH) immobilized membrane onto a fiber-optic NADH measurement system. This system utilizes an ultraviolet light emitting diode as an excitation light source. Acetone vapor was measured as the fluorescence of NADH consumption by the enzymatic reaction of S-ADH. A phosphate buffer that contained oxidized NADH was circulated into the flow-cell to rinse the products and the excessive substrates from the optode; thus, the bio-sniffer enables the real-time monitoring of acetone vapor concentration. A photomultiplier tube detects the change in the fluorescence emitted from NADH. The relationship between the fluorescence intensity and acetone concentration was identified to be from 20 ppb to 5300 ppb. This encompasses the range of concentration of acetone vapor found in the breath of healthy people and of those suffering from disorders of carbohydrate metabolism. Then, the acetone bio-sniffer was used to monitor the exhaled breath acetone concentration change before and after a meal. When the sensing region was exposed to exhaled breath, the fluorescence intensity decreased and reached saturation immediately. Then, it returned to the initial state upon cessation of the exhaled breath flow. We anticipate its future use as a non-invasive analytical tool for the assessment of lipid metabolism in exercise, fasting and diabetes mellitus.
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Mishra, Rajneesh Kumar, Gyu-Jin Choi, Hyeon-Jong Choi, and Jin-Seog Gwag. "ZnS Quantum Dot Based Acetone Sensor for Monitoring Health-Hazardous Gases in Indoor/Outdoor Environment." Micromachines 12, no. 6 (May 22, 2021): 598. http://dx.doi.org/10.3390/mi12060598.

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Анотація:
This study reports the ZnS quantum dots (QDs) synthesis by a hot-injection method for acetone gas sensing applications. The prepared ZnS QDs were characterized by X-ray diffraction (XRD) and transmission electron microscopy analysis. The XRD result confirms the successful formation of the wurtzite phase of ZnS, with a size of ~5 nm. Transmission electron microscopy (TEM), high-resolution TEM (HRTEM), and fast Fourier transform (FFT) images reveal the synthesis of agglomerated ZnS QDs with different sizes, with lattice spacing (0.31 nm) corresponding to (111) lattice plane. The ZnS QDs sensor reveals a high sensitivity (92.4%) and fast response and recovery time (5.5 s and 6.7 s, respectively) for 100 ppm acetone at 175 °C. In addition, the ZnS QDs sensor elucidates high acetone selectivity of 91.1% as compared with other intrusive gases such as ammonia (16.0%), toluene (21.1%), ethanol (26.3%), butanol (11.2%), formaldehyde (9.6%), isopropanol (22.3%), and benzene (18.7%) for 100 ppm acetone concentration at 175 °C. Furthermore, it depicts outstanding stability (89.1%) during thirty days, with five day intervals, for 100 ppm at an operating temperature of 175 °C. In addition, the ZnS QDs acetone sensor elucidates a theoretical detection limit of ~1.2 ppm at 175 °C. Therefore, ZnS QDs can be a promising and quick traceable sensor nanomaterial for acetone sensing applications.
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Більше джерел

Дисертації з теми "Acetone monitoring"

1

Qian, Zexin. "The Impact of Humidity on an Optical Chemical Sensing Device for Non-invasive Exhaled Gas Monitoring." University of Cincinnati / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1471347710.

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2

Badmaarag, Ulzii-Orshikh. "Optical Chemical Sensing Device for In-situ Non-Invasive Gas Monitoring." University of Cincinnati / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1583155117533193.

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3

Sahuri, Arisoylu Meliz. "Metabolic engineering by acetate : monitoring effects at a molecular level." Thesis, Imperial College London, 2012. http://hdl.handle.net/10044/1/14740.

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Анотація:
Finding effective life style interventions is paramount in the control of obesity and its comorbidities such as NAFLD. In this thesis I investigate the effects of a short chain fatty acid (SCFA) on obesity and liver fat, using firstly two different carbohydrates, inulin (an indigestible but fermentable carbohydrate) and isomaltulose (a digestible carbohydrate). I go on to investigate the effects of acetate, through the development and implementation of a novel nanoparticle carrier to study the effects of this SCFA on hepatic metabolism. To study the effects of isomaltulose and inulin on adiposity, magnetic resonance imaging (MRI) and spectroscopy (MRS) techniques were used on mice fed on a high fat diet supplemented with these two carbohydrates. Manganese enhanced MRI (MEMRI), was used to monitor hypothalamic brain activation. A significant decrease in hypothalamic activation was detected in both inulin and isomaltulose supplemented animals in the absence of detectable phenotypic changes, including body adiposity and liver fat. As some of the effects of fermentable carbohydrates are thought to occur through the increased production of SCFAs, the potential physiological effects of one of the SCFA, acetate, were further explored. PET imaging was employed to study whole body 11C-acetate biodistribution on a murine model. The highest uptake of 11C-acetate was observed in the heart followed by liver, colon, brown adipose tissue (BAT), brain, fat and muscle (20, 10, 4, 3.6, 3, 2.9 and 2 peak %ID/g respectively). Colonic administration caused significant difference in uptake pattern of heart, liver, brain and BAT (p=0.001), muscle (p=0.0001) and colon (p=0.004) compared with i.v. No difference was observed in fed vs fasted animals. Pre-administration of “cold” acetate prior to systemic administration of 11C-acetate increased uptake of the latter in the liver, heart, brain and BAT suggesting that priming with CA saturates either the GPR43/41 receptors or the transport system of acetate In order to assess the potential beneficial effects of acetate, it was necessary to administer this SCFA in a chronic and consistent manner. Administration of large concentrations of pure SCFA to mice or human is known to have significant detrimental effects, so an alternative nanoparticle based strategy was developed for this purpose. Acetate was encapsulated in liposomal nanoparticles, capable of carrying millimolar concentrations of SCFA. In a murine model fed on normal fat diet, liposomal-encapsulated acetate significantly decreased liver adiposity, but not total body fat, while serum markers of obesity were reduced although they did not reach significance. In a murine model fed on high fat diet, liposomal-encapsulated acetate decreased whole body adiposity, liver fat content and serum free fatty acid (FFA) concentrations and serum markers of liver disease were significantly reduced whereas ketone concentrations in serum were significantly increased. This thesis shows that alterations in dietary carbohydrate composition can lead to significant effects on appetite, probably through the increase production of SCFAs. Furthermore, the use of liposomal-nanoparticles for direct SCFA delivery appears a potentially fast and effective way to treat some of the physiological and metabolic abnormalities associated with obesity.
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4

Jovanovic, Renata. "Butyl acrylate/vinyl acetate emulsion copolymerization: Reaction monitoring and property evaluation." Thesis, University of Ottawa (Canada), 2001. http://hdl.handle.net/10393/9102.

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Several aspects of butyl acrylate/vinyl acetate (BA/VAc) polymerizations were investigated in this thesis. Polymerization process monitoring is a key factor in obtaining high quality products with prespecified properties. Therefore, a considerable part of this work was devoted to the real-time monitoring of BA/VAc emulsion polymerization reactions. An Attenuated Total Reflectance - Fourier Transform Infrared (ATR-FTIR) spectroscopy sensor was used for monitoring conversion and copolymer composition. Due to the novelty of this technique, in the first part of the study, the suitability of this technique for polymerization monitoring was investigated. In the second part of this thesis, the knowledge obtained from the off-line monitoring of the solution polymerizations was employed for the real time monitoring of six high-solids BA/VAc emulsion polymerizations. Finally, the latexes obtained in the second part of this thesis were characterized for a variety of polymer properties of interest to adhesive industry. Among the properties investigated were particle size, rheology, dynamic mechanical properties of the dry polymers and the shear and tensile strength of adhesive bonds when hard maple wood is used as a substrate. (Abstract shortened by UMI.)
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5

Su, Xiaomin. "Evaluation of acetate thresholds under various terminal electron-accepting conditions application to bioremediation monitoring /." College Park, Md. : University of Maryland, 2004. http://hdl.handle.net/1903/171.

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Анотація:
Thesis (M.S.) -- University of Maryland, College Park, 2004.
Thesis research directed by: Dept. of Biological Resources Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
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6

Piwkhow, Supida. "Theoretical and experimental evaluation of acetate thresholds as a monitoring tool for in situ bioremediation." College Park, Md.: University of Maryland, 2008. http://hdl.handle.net/1903/7803.

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Анотація:
Thesis (M.S.) -- University of Maryland, College Park, 2007.
Thesis research directed by: Dept. of Civil and Environmental Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
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7

Rebocho, Rita Costa. "A utilização do pivalato de desoxicorticosterona pela comunidade médico veterinária : a perspetiva da Europa Ocidental." Master's thesis, Universidade de Lisboa, Faculdade de Medicina Veterinária, 2021. http://hdl.handle.net/10400.5/21182.

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Анотація:
Dissertação de Mestrado Integrado em Medicina Veterinária
A frequência de utilização do pivalato de desoxicorticosterona (DOCP), a dose inicialmente prescrita e as frequências de administração são variáveis entre a comunidade médico veterinária da Europa Ocidental (MVEO). Este estudo teve como objetivos averiguar a suplementação mineralocorticóide preferencial para maneio crónico do hipoadrenocorticismo (HA) e caraterizar a utilização de DOCP pela comunidade MVEO em cães diagnosticados com esta doença. Um questionário online em português, foi construído, validado e traduzido em 3 idiomas (Espanhol, Francês e Italiano), utilizando a plataforma eletrónica Google Forms. O questionário foi divulgado através de grupos exclusivos a Médicos Veterinários na rede social Facebook e via correio-eletrónico, incluindo questões sobre o regime inicial de tratamento, a dose inicial de DOCP, a monitorização clínica e eletrolítica em cães com doença de Addison. Obteve-se um total de 315 respostas em seis países (Portugal, Espanha, Itália, França, Bélgica e Luxemburgo). Dos que diagnosticaram HA recentemente, cerca de 84% utilizaram, pelos menos uma vez, DOCP e 80% preferem este fármaco ao acetato de fludrocortisona como primeira escolha para suplementação mineralocorticóide. Dos 154 que utilizaram DOCP, 63% indicaram que utilizam a dose inicial recomendada de 2,2mg/kg enquanto que, apenas 15% utilizam doses mais baixas. Após iniciarem tratamento com DOCP, cerca de 91% dos participantes monitorizam os eletrólitos duas vezes por mês e apenas 9% o fazem mensalmente até estabilização. Apenas 65% dos inquiridos se pronunciaram acerca do ajuste terapêutico. Destes, 53% privilegiam alterar a dose administrada enquanto 47% preferem aumentar o intervalo de administração. Após a primeira administração, 10% dos participantes apenas administram uma nova dose de DOCP quando o animal começa a descompensar. Em cães com valores eletrolíticos estáveis, 34% dos participantes fazem avaliações clínicas mensalmente, 44% trimestralmente, 17% duas vezes por ano e 5% anualmente. Este estudo confirma que, o DOCP é o fármaco de eleição para suplementação mineralocorticóide e que a maioria dos inquiridos segue as recomendações para a dose inicial e monitorização a curto prazo. Os ajustes terapêuticos de dose e frequência variam entre a amostra, evidenciando a necessidade de diretrizes específicas. Uma percentagem significativa dos inquiridos só administra DOCP novamente após descompensação clínica, o que pode aumentar o risco de crise addisoniana.
ABSTRACT- The use of desoxycorticosterone pivalate by veterinary surgeons: A Western European perspective - The frequency of use of desoxycorticosterone pivalate (DOCP), initial doses and treatment intervals are variable among Western European Veterinary Surgeons (WEVS). This study aimed to verify which is the preferable mineralocorticoid supplementation for chronic management of hypoadrenocorticism (HA) and characterize the use of DOCP by WEVS in dogs diagnosed with this disease. An online Portuguese survey translated into three different languages (Spanish, French and Italian) was developed and validated using the electronic platform Google Forms. The survey was shared through social network veterinary groups in Facebook and mailing lists including questions focused on initial treatment regimen, DOCP starting dosage, clinical and electrolytic monitoring schedule in dogs diagnosed with Addison’s disease. Overall, a total of 315 responses were obtained in six countries (Portugal, Spain, Italy, France, Belgium and Luxembourg). Of those who had recently diagnosed HA, about 84% used DOCP at least once and 80% indicated they preferred its use over fludrocortisone acetate as first-line choice for mineralocorticoid supplementation. Among 154 respondents who had used DOCP, 63% indicated using 2.2mg/kg as initial dosage while only 15% stated using lower dosages. Following initiation of DOCP treatment, about 91% of respondents indicated monitoring electrolytes twice a month and only 9% do it once a month until stabilization. Only 65% of the respondents indicated their therapeutic adjustment. Of these, 53% prefer changing the dosage while 47% stated increasing the administration interval. Following the initial administration, 10% of respondents indicated administering subsequent DOCP injections only in case of clinical relapse. In dogs with stable electrolytes concentrations, 34% of respondents reported reassessing dogs monthly, 44% quarterly, 17% twice yearly and 5% yearly. This study states DOCP is the preferred treatment for mineralocorticoid supplementation and the majority of WEVS follow the manufacturer’s recommendations for initial dosage and short term monitoring schedule. Subsequent preferred therapeutic adjustments regarding change in dosage or dosing intervals vary among sample, reflecting how relevant specific guidelines are. Of particular concern, a significant proportion of WEVS only administer DOCP in case of clinical relapse following the initial administration, which likely increases the risk of addisonian crisis.
N/A
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8

Winstedt, Dag, Nahreen Tynngård, Knut Olanders, and Ulf Schott. "Free oscillation rheometry monitoring of haemodilution and hypothermia and correction with fibrinogen and factor XIII concentrates." Linköpings universitet, Transfusionsmedicin, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-92708.

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Анотація:
Background Haemodilution and hypothermia induce coagulopathy separately, but their combined effect on coagulation has not been widely studied. Fibrinogen concentrate can correct dilutional coagulopathy and has an additional effect when combined with factor XIII concentrate. However, their effect on dilutional coagulopathy concomitant with hypothermia has not been studied previously. Free oscillation rheometry – FOR (Reorox®) – is a novel viscoelastic haemostatic assay that has not been studied in this context before. Methods Blood from 10 healthy volunteers was diluted by 33% with hydroxyethyl starch or Ringer’s acetate solutions. Effects of fibrinogen added in vitro with and without factor XIII were studied at 33°C and 37°C. Coagulation velocity (coagulation time) and clot strength (elasticity) were assessed with FOR. Coagulation was initiated in vitro with thromboplastin alone, or thromboplastin plus a platelet inhibitor. Results Hydroxyethyl starch increased the coagulation time and decreased clot strength significantly more than Ringer’s acetate solution, both in the presence and absence of a platelet inhibitor. There was a significant interaction between haemodilution with hydroxyethyl starch and hypothermia, resulting in increased coagulation time. After addition of fibrinogen, coagulation time shortened and elasticity increased, with the exception of fibrinogen-dependent clot strength (i.e., elasticity in the presence of a platelet inhibitor) after hydroxyethyl starch haemodilution. Factor XIII had an additional effect with fibrinogen on fibrinogen-dependent clot strength in blood diluted with Ringer’s acetate solution. Hypothermia did not influence any of the coagulation factor effects. Conclusions Both haemodilution and mild hypothermia impaired coagulation. Coagulopathy was more pronounced after haemodilution with hydroxyethyl starch than with Ringer’s acetate. Addition of fibrinogen with factor XIII was unable to reverse hydroxyethyl starch induced clot instability, but improved coagulation in blood diluted with Ringer’s acetate solution. Fibrinogen improved coagulation irrespective of hypothermia.

Funding Agencies|Region Skane (Sweden)||CSL Beehring||

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"Noninvasive Metabolic Monitoring: An Assessment of Thermoelectric Gas Adsorption Biosensors for Acetone and Ethanol Detection in Breath Analysis." Master's thesis, 2011. http://hdl.handle.net/2286/R.I.9265.

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abstract: In the search for chemical biosensors designed for patient-based physiological applications, non-invasive diagnostic approaches continue to have value. The work described in this thesis builds upon previous breath analysis studies. In particular, it seeks to assess the adsorptive mechanisms active in both acetone and ethanol biosensors designed for breath analysis. The thermoelectric biosensors under investigation were constructed using a thermopile for transduction and four different materials for biorecognition. The analytes, acetone and ethanol, were evaluated under dry-air and humidified-air conditions. The biosensor response to acetone concentration was found to be both repeatable and linear, while the sensor response to ethanol presence was also found to be repeatable. The different biorecognition materials produced discernible thermoelectric responses that were characteristic for each analyte. The sensor output data is presented in this report. Additionally, the results were evaluated against a mathematical model for further analysis. Ultimately, a thermoelectric biosensor based upon adsorption chemistry was developed and characterized. Additional work is needed to characterize the physicochemical action mechanism.
Dissertation/Thesis
M.S. Bioengineering 2011
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10

Kuo, Chia-Hui, and 郭佳慧. "Using SPME-GC Technique in Propylene Glycol Ether acetate Airborne Monitoring." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/96245944700907969503.

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Анотація:
碩士
弘光科技大學
職業安全與防災研究所
98
A headspace solid-phase microextraction (HS-SPME) combining capillary gas chromatography with flame ionization detection (GC-FID) for use in the determination of three frequentlly used propylene glycol ethers (PEs) at ppb level is described. A commercial 75m carboxen- polydimethylsiloxane fiber was used to extract the analytes from PEs standard gas. The factors affecting the HS-SPME extraction, such as coating material, desorption time, temperature, concentration and wind velocity etc. were discussed. The concentration ranges for calibration curves were 23 μg/ml~2.2 mg/ml for PGME, 24.3μg/ml ~2.9 mg/ml for PGMEA and 23.9 μg/ml ~2.9 mg/ml for DPGME, and the correlation coefficients were greater than 0.995. The method detection limits were 0.13 μg/ml , 0.04 μg/ml,and 0.05 μg/ml per sample for PGME, PGMEA and DPGME, respectively. The optimal desorption time was 5 min, and experimental sampling rate were (5.796± 0.581)´10-7, (5.266 ±0.429)´10-7, (5.107± 0.548) ´10-7 m3/min for PGME, PGMEA, DPGME respectively, tested under 100ppm, 21C and 10%RH. The experimental uptake rate of SPME for PGMEA was 30-50 times higher than that of the theoretical values. Such discrepancy likely results from PGMEA hydrolysis. The experimental uptake rates were significantly (p<0.05) affected by temperature and relative humidity, but was not (p>0.05) significant by wind velocity. Samples were stable for 9 days under 4°C and 7 days under room temperature. The current study demonstrated that the proposed sampler is suitable for monitoring airborne PEs and assess time-weighted average (TWA) exposures for workers. Nonetheless, future study is needed to validate the performance of the proposed method in the field.
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Книги з теми "Acetone monitoring"

1

Horner, Richard R. Environmental monitoring and evaluation of calcium magnesium acetate (CMA). Washington, D.C: Transportation Research Board, National Research Council, 1988.

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2

Aceto, Holly. Glucose Log Book: Dog Cover Glucose Log Book, Your Glucose Monitoring Log - Professional Diabetic Glucose Log Book, 120 Pages, Size 6 X 9 by Holly Aceto. Independently Published, 2021.

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Частини книг з теми "Acetone monitoring"

1

Mohapatra, Sumant Kumar, Sushil Kumar Mahapatra, Shuvendra Kumar Tripathy, and Lalit Kanoje. "Concentration of Acetone Levels in Breath for Monitoring Blood Glucose Level." In Advances in Intelligent Systems and Computing, 17–24. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-2035-3_3.

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2

Frauendorfer, Eric, Muhammad Babar, Timo Melchin, and Wolf-Dieter Hergeth. "Monitoring of Vinyl Acetate–Ethylene Processes: An Industrial Perspective." In Polymer Reaction Engineering of Dispersed Systems, 183–214. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/12_2017_22.

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Hiyama, Satoshi. "Self-monitoring of fat metabolism using portable/wearable acetone analyzers." In Chemical, Gas, and Biosensors for Internet of Things and Related Applications, 307–22. Elsevier, 2019. http://dx.doi.org/10.1016/b978-0-12-815409-0.00021-8.

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Тези доповідей конференцій з теми "Acetone monitoring"

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Lombardo, Luca, Nicola Donato, Sabrina Grassini, Alessio Gullino, Kaveh Moulaee, Giovanni Neri, and Marco Parvis. "Nb2O5 thin film-based conductometric sensor for acetone monitoring." In 2019 IEEE International Symposium on Medical Measurements and Applications (MeMeA). IEEE, 2019. http://dx.doi.org/10.1109/memea.2019.8802126.

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Gomes, A. D., M. F. S. Ferreira, J. P. Moura, R. M. André, S. O. Silva, J. Kobelke, J. Bierlich, K. Wondraczek, K. Schuster, and O. Frazão. "Acetone evaporation monitoring using a caterpillar-like microstructured fiber." In International Conference on Optical Fibre Sensors (OFS24), edited by Hypolito J. Kalinowski, José Luís Fabris, and Wojtek J. Bock. SPIE, 2015. http://dx.doi.org/10.1117/12.2194932.

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Righettoni, M., A. Tricoli, S. Gass, S. E. Pratsinis, A. Schmid, and A. Amann. "7.1.3 Breath acetone monitoring by portable Si:WO3 gas sensors." In 14th International Meeting on Chemical Sensors - IMCS 2012. AMA Service GmbH, Von-Münchhausen-Str. 49, 31515 Wunstorf, Germany, 2012. http://dx.doi.org/10.5162/imcs2012/7.1.3.

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Chen, Yi, Hyejun Jung, and Jaehwan Kim. "Acetone vapor sensor made with cellulose-TiO 2 /MWCNTs hybrid nanocomposite." In SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, edited by Vijay K. Varadan. SPIE, 2012. http://dx.doi.org/10.1117/12.915756.

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5

Nakamura, Tatsuya, Yuki Yamada, and Satoshi Hiyama. "A prototype foot-sole acetone analyzer and its applicability to caloric balance monitoring." In 2018 IEEE International Conference on Consumer Electronics (ICCE). IEEE, 2018. http://dx.doi.org/10.1109/icce.2018.8326086.

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Mwakikunga, Bonex Wakufwa, Suprakas Sihna Ray, Malose Mokwena, John Dewar, Irina Geibelhaus, Trilok Singh, Thomas Fischer, and Sanjay Mathur. "Tin dioxide nano-wire device for sensing kinetics of acetone and ethanol towards diabetes monitoring." In 2013 IEEE Sensors. IEEE, 2013. http://dx.doi.org/10.1109/icsens.2013.6688338.

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7

Boumali, Sara, Mohamed Taoufik Benhabiles, Khalifa Aguir, and Fouad Kerrour. "Can WO3 and SnO2 be used as acetone gas sensors in exhaled human breath for noninvasive blood glucose monitoring?" In 2017 E-Health and Bioengineering Conference (EHB). IEEE, 2017. http://dx.doi.org/10.1109/ehb.2017.7995482.

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Mallick, Shoaib, Zubair Ahmad, and Farid Touati. "Polymer Nanocomposite-based Moisture Sensors for Monitoring of the Water Contents in the Natural Gas Pipelines." In Qatar University Annual Research Forum & Exhibition. Qatar University Press, 2020. http://dx.doi.org/10.29117/quarfe.2020.0073.

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In this study, the polymer-based humidity sensors were investigated for humidity sensing applications. The key advantages of polymers that have garnered this attraction are their lightweight, easy preparation, and low cost of both materials and fabrication process. Different techniques are used to enhance the surface morphology and sensitivity of polymeric films, which include synthesis of nanocomposites, copolymerization techniques, and blending of polymers. The incorporation of nanoparticles to the polymer matrix improves the electrical and mechanical properties of the polymeric film. We have investigated different polymer nanocomposites based humidity sensors on enhancing the sensitivity of the sensor, on achieving faster response and recovery time and lower hysteresis loss as compared to the polymeric humidity sensors. In the first phase, we investigated the PLA-TiO2 nanocomposite for humidity sensing applications. We have optimized the concentration of TiO2 in the PLA-TiO2 nanocomposite and apply acetone for the surface treatment of the sensing film. In the second phase, we studied the PVDF-TiO2 nanocomposite-based humidity sensor, achieved a linear response of the sensor, and optimized the concentration of PVDF. In the third phase, we incorporated the BaTiO3 nanoparticles within optimized PVDF and studied the dielectric property of the nanocomposite film. PVDF-BaTiO3 sensors show a smaller hysteresis response. In the 4th phase, we blend the PVDF with SPEEK polymer; the optimized concentration of SPEEK improves the sensitivity of the humidity sensors at a lower humidity level.
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Tshotetsi, Lumbani, Bonex W. Mwakikunga, and Paul Rheeder. "Monitoring of glucose in people living with diabetes mellitus: A study comparing nano-based acetone/glucose breath analyzer, two commercial glucometers and laboratory-based glucose analysis." In 2021 6th International Conference on Nanotechnology for Instrumentation and Measurement (NanofIM). IEEE, 2021. http://dx.doi.org/10.1109/nanofim54124.2021.9737347.

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Cho, K. Y., H. K. Lim, Y. Chen, Jaehwan Kim, and K. S. Kang. "Micro-mold fabrication using cellulose acetate." In The 14th International Symposium on: Smart Structures and Materials & Nondestructive Evaluation and Health Monitoring, edited by Vijay K. Varadan. SPIE, 2007. http://dx.doi.org/10.1117/12.715881.

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Звіти організацій з теми "Acetone monitoring"

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Wang, Francis W., and Susannah B. Schiller. Preparation and monitoring of lead acetate containing drinking water solutions for toxicity studies. Gaithersburg, MD: National Institute of Standards and Technology, 1994. http://dx.doi.org/10.6028/nist.ir.5388.

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Patron, Maria Carmela, and Marilou P. Costello. The DMPA service provider: Profile, problems and prospects, August 1995. Population Council, 1995. http://dx.doi.org/10.31899/rh1995.1024.

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This report presents the results of interviews conducted with 60 trained DMPA service providers from seven of the ten local government units (LGUs) covered by Phase I of the Philippine Department of Health's DMPA Reintroduction Program. DMPA, or Depot-medroxyprogesterone acetate, is an injectable contraceptive commonly known as Depo-Provera. The interviews were undertaken as part of the DMPA Monitoring and Follow-up Studies sponsored by the Population Council under the Asia and Near East Operations Research and Technical Assistance (ANE OR/TA) Project. While the monitoring study and the follow-up survey focused on DMPA users and dropouts, this study centered on the service provider. The DMPA Reintroduction Program was launched by the DOH in April 1994 by the Philippine Bureau of Food and Drugs. The program aims to reintroduce DMPA into the Philippine Family Planning Program through training local-level doctors, nurses, and midwives as service providers, and providing free DMPA services in selected public health facilities.
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Reintroducing DMPA to the Philippine Family Planning Program: A longitudinal study of continuing users and drop-outs. Population Council, 1996. http://dx.doi.org/10.31899/rh1996.1017.

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In 1994, the Population Council, Manila, conducted an operations research (OR) project entitled “DMPA Monitoring and Follow-up Studies.” The activity was undertaken to provide accurate and timely support to the DMPA Reintroduction Program of the Department of Health. Commonly known as Depo-Provera, DMPA stands for Depo-Medroxy Progesterone Acetate, an extremely effective injectable contraceptive given every three months. This report focuses on the survey component of these studies which aims to comprehensively examine the influence on DMPA use of factors classified into the following eight major areas: socioeconomic and demographic characteristics; reproductive history; contraceptive history; adoption of DMPA; quality of care related to DMPA; the respondent's experience with DMPA; husband-wife communication regarding family size and family planning practice; and attitudes towards DMPA held by relatives and peers. Findings are taken from bivariate and multivariate analyses of 812 women randomly selected from DMPA acceptors in nine of the ten local government units covered by the first phase of the program. These acceptors were surveyed first in February and then again in June-July 1995 to document DMPA experience and perceptions since the first DMPA injection.
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