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Journal articles on the topic 'Manometrisk metod'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 February 2022

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1

Roppola, Katri, Toivo Kuokkanen, Jaakko Rämö, Hanna Prokkola, and Eeva Heiska. "Comparison Study of Different BOD Tests in the Determination of BOD7Evaluated in a Model Domestic Sewage." Journal of Automated Methods and Management in Chemistry 2007 (2007): 1–4. http://dx.doi.org/10.1155/2007/39761.

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The aim of this research was to study the suitability of a manometric respirometric test (OECD 301F) for the determination of biological oxygen demand (BOD) in domestic wastewater. This was done by comparing four different BOD tests (a manometric respirometric test, oxygen sensor determination, iodometric titration, and UV absorption measurement) and by evaluating the BOD7value after a short-term measurement applying the manometric respirometric test. Measurements were done in three dif-ferent laboratories. The respirometric test was performed well on municipal sewage, and the precision of results was good. There were minor deviations between BOD7values as determined by the different methods, but the deviations were not essentially big enough to have a practical impact. Evaluation of the BOD7value after two or three days' incubation by the respirometric method was shown to work well; average deviations between measured and evaluated values after three days' incubation were 5–18%. Hence, the manometric respirometric test proved to be a rapid and suitable tool for process control purposes.

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2

Fdz-Polanco, F., P. Nieto, S. I. Pérez-Elvira, and M. Fdz-Polanco. "Automated manometric method to assess anaerobic toxicity of chemicals." Water Science and Technology 54, no. 2 (2006): 95–101. http://dx.doi.org/10.2166/wst.2006.491.

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Industrial additives eventually used for different purposes (antifoaming, cleaning, bactericides, antiscale, etc) are discharged to the wastewater treatment plant. The anaerobic toxicity of these commercial products is not provided by suppliers. A new manometric method is developed and tested to evaluate anaerobic toxicity or inhibition using four different commercial products. Antifoaming Cleron 6 (50–200 ppm), bactericide Divosan-forte (0.05–1.0% v/v), bleach (0.1–1.0% v/v) and cleaning agent Topax 66 (0.10–1.0% v/v). According to the different methods proposed in the literature, from the methane production rate, it is possible to calculate both methanogenic activity evolution and final substrate removal and quantify the potential inhibitory effect of commercial additives. The experimental method is simple and reliable.

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3

Kokurewicz, Łukasz, and Mateusz Muszyński-Huhajło. "Alternative device for ANAMMOX/denitrification rate assessment using manometric method." E3S Web of Conferences 17 (2017): 00040. http://dx.doi.org/10.1051/e3sconf/20171700040.

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4

Zavrazhnov, A. Y., D. N. Turchen, E. G. Goncharov, and V. P. Zlomanov. "Manometric method for the study of P-T-X diagrams." Journal of Phase Equilibria 22, no. 4 (2001): 482–90. http://dx.doi.org/10.1361/105497101770333063.

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5

Sazonova, Svetlana, Sergey Korablin, and Alla Zvyaginceva. "NUMERICAL IMPLEMENTATION OF MODELS FOR REMOTE DETECTION OF LEAKS IN HEAT SUPPLY SYSTEMS." Modeling of systems and processes 13, no. 4 (2021): 58–64. http://dx.doi.org/10.12737/2219-0767-2021-13-4-58-64.

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A description is given of the method of remote detection of the existence or absence of leaks in functioning heat supply systems, developed on the basis of a two-alternative hypothesis. It is proposed to apply a method for determining the location and volume of leaks based on the use of energy equivalent. It is proposed to check the presence of a leak between static assessments of the state of heat supply systems according to the data of remote manometric survey, with the help of which a simultaneous interrogation of pressure sensors in the power nodes of the system under consideration is performed. In case of abrupt changes in the estimated parameters of the system, it is concluded that there is a leak. The results of a computational experiment are presented, compared with the results of calculating the parameters in the system based on the results of manometric survey.

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6

Mordasov, M. M., A. P. Savenkov, and K. E. Chechetov. "A Manometric Method of Measuring the Apparent Density of Granular Materials." Measurement Techniques 58, no. 4 (2015): 419–25. http://dx.doi.org/10.1007/s11018-015-0728-9.

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7

Suprunyuk, V. V. "An improved thermodynamic method of checking the parameters of manometric instruments." Measurement Techniques 35, no. 12 (1992): 1408–10. http://dx.doi.org/10.1007/bf00976885.

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8

Khakimov, O. Sh, N. Sh Muminov, and J. A. Hamidov. "UNCERTAINTY OF A MANOMETRIC METHOD FOR DETERMINING THE HUMIDITY OF FIBROUS MATERIALS." Ukrainian Metrological Journal, no. 3A (November 30, 2020): 160–64. http://dx.doi.org/10.24027/2306-7039.3a.2020.218723.

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9

Fujimiya, Mineko, Rumi Tanaka, Koji Ataka, Kaori Atsuchi, Akihiro Asakawa, and Akio Inui. "W1917 New Method of Manometric Measurement of Gastroduodenal Motility in Conscious Mice." Gastroenterology 138, no. 5 (2010): S—765. http://dx.doi.org/10.1016/s0016-5085(10)63530-5.

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10

Teixeira, Jose A., and Manuel Mota. "Determination of catalase activity and its inhibition by a simple manometric method." Biochemical Education 20, no. 3 (1992): 174–75. http://dx.doi.org/10.1016/0307-4412(92)90066-u.

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11

Amodeo, Corrado, Sasha D. Hafner, Rúben Teixeira Franco, et al. "How Different Are Manometric, Gravimetric, and Automated Volumetric BMP Results?" Water 12, no. 6 (2020): 1839. http://dx.doi.org/10.3390/w12061839.

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The objectives of this study were to: (1) quantify differences in biochemical methane potential (BMP) measured using three measurement methods, including two popular methods (a commercial automated system (AMPTS II) and manual manometric) and one newer method (gravimetric), and (2) assess the importance of the mixing position in the measurement sequence. Powdered microcrystalline cellulose was used as the substrate in simultaneous tests. All methods gave similar results (<8% difference in the mean BMP) and were reasonably accurate (recovery of 80–86% of the theoretical maximum BMP). Manometric BMP values were consistently lower than gravimetric by 4–5%. Precision was lower for the automated method (relative standard deviation (RSD) of about 7%) than for the manual methods (RSD about 1–3%). Mixing after biogas measurement resulted in 3% higher BMP for both manual methods than mixing before, due to the lower measured CH4 production from blanks. This effect may be linked to a fraction of CH4 that remains dissolved or even as attached bubbles, and suggests that mixing before measurement is preferable. The automated volumetric and gravimetric methods (mode 2) gave very similar mean BMP values (1% different). However, kinetic analysis showed that methane production was faster with the automated volumetric method. This could come from an error in the estimation of the CH4 production rate for the automated method, or an increase in the degradation rate due to better mixing. Both automatic volumetric and manual gravimetric measurements met current validation criteria for mean cellulose BMP, but the RSD from the automated system exceeded the limit.

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12

Chanut, Julie, Aurélie Lagorce, Sonia Lequin, et al. "Fast manometric method for determining the effective oxygen diffusion coefficient through wine stopper." Polymer Testing 93 (January 2021): 106924. http://dx.doi.org/10.1016/j.polymertesting.2020.106924.

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13

Anand, N. S., Ram Avtar Jat, S. G. Sawant, S. C. Parida, Ziley Singh Chaudhary, and V. Venugopal. "Equilibrium pressure measurements in the Li-N-H system by static manometric method." International Journal of Hydrogen Energy 36, no. 5 (2011): 3580–85. http://dx.doi.org/10.1016/j.ijhydene.2010.12.027.

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14

Shulgina, Yuliya, Maria A. Kostina, P. V. Sorokin, Marina Polonskaya, O. A. Kozhemyak, and Andrey Soldatov. "Quantitative Measurement System of Liquid Products in Sealed Tank." Materials Science Forum 970 (September 2019): 63–74. http://dx.doi.org/10.4028/www.scientific.net/msf.970.63.

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Many industries apply pressure tanks for the storage of various types of liquids [1]. It can be toxic, chemically active liquids or food products. Storage conditions of these liquids can have a wide range of pressures and temperatures; therefore it is preferable to control the liquids levels from the outside of the tank. The most optimal solution in this case is the ultrasonic pulse time method [2-6], which is also widely used in robotics [7], fishing, shipping [8-9], archeology [10-11], non-destructive testing [12-17] and manometric method [18].

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15

dos Santos-Neto, Agenor G., Malone S. Pinheiro, Monica C. dos Santos, et al. "Development of a Manometric Monitoring Method for Early Detection of Air Microbiological Contamination in the Bloodstream." Atmosphere 12, no. 6 (2021): 702. http://dx.doi.org/10.3390/atmos12060702.

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Atmospheric air is a microbial habitat of pathogenic bioaerosols that may pose serious risks to humans. A commonly laboratory-based approach for the diagnosis of such infections in the bloodstream is the blood culture analysis. Its clinical relevance is attributed to the fact that these infections are characterized by high rates of morbidity and mortality, requiring the need for efficient methods for rapid diagnosis. For this reason, our study aimed to develop a method of manometric monitoring for the rapid detection of viable microorganisms in blood culture vials. A methodology was developed to detect pressure variation in intra-vials through a manometric instrument that was coupled to vials of blood culture containing culture broth that allowed microbial growth. This device allowed the early detection of microbial activity based on the production or use of intra-flask gases as a result of microbial metabolic activity. The analyzed variables were the pressure as a function of time, microbial species, and culture medium. The highest pressure found in the flasks without microorganisms was 40 mmHg between 2 and 6 h, and the lowest pressure was −42 mmHg between 21 and 24 h. The variation of the internal pressure in blood culture flasks according to different groups of microorganisms as a function of time demonstrated that the fermentative gram-negative bacilli and gram-positive cocci exhibited a significant increase in relation to their respective control groups (p < 0.001). The non-fermenting gram-negative bacilli showed expected results in relation to the pressure variation in which the production of negative pressures was noticed during the period of analysis, with a significant difference with respect to their control groups (p < 0.001). The developed methodology for the early detection of microorganisms responsible for bloodstream infection was demonstrated to be effective.

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16

Tachecí, Ilja, Věra Radochová, Jaroslav Květina, Stanislav Rejchrt, Marcela Kopáčová, and Jan Bureš. "Oesophageal Manometry in Experimental Pigs: Methods and Initial Experience." Acta Medica (Hradec Kralove, Czech Republic) 58, no. 4 (2015): 131–34. http://dx.doi.org/10.14712/18059694.2016.5.

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The aim of this study project was to prepare our own method of porcine oesophageal manometry. Ten mature experimental pigs entered the study. Conventional water-perfused system was decided for manometry. Porcine resting and relaxed pressures of the lower oesophageal sphincter are fully comparable with healthy human subjects. Evocable swallowing is doable and oesophageal peristalsis is quantifiable. Basic manometric parameters were different in male and female animals. Oesophageal manometry in experimental pigs is feasible. Porcine oesophageal manometry will be usable for preclinical studies in future.

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17

Vital Júnior, Pedro Félix, José Luiz Martins, and Fábio Luís Peterlini. "Posterior sagittal anorectoplasty in anorectal anomalies: clinical, manometric and profilometric evaluation." Sao Paulo Medical Journal 125, no. 3 (2007): 163–69. http://dx.doi.org/10.1590/s1516-31802007000300007.

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CONTEXT AND OBJECTIVE: Anorectal malformations comprise a spectrum of anomalies that continue to be difficult to treat, even today. The aim was to evaluate the fecal continence of children who underwent posterior sagittal anorectoplasty due to anorectal malformations, via computerized anorectal manometry and profilometry. DESIGN AND SETTING: Prospective study at Universidade Federal de São Paulo. METHOD: 82 patients (56.1% boys; 43.9% girls) of mean age 85.5 months were evaluated. They were divided into continent, partially continent and incontinent groups. Age, sex, manometric variables and profilometric parameters were studied. The results were statistically analyzed. RESULTS: Among the 82 patients, 37.8% were continent, 25.6% were partially continent and 36.6% were incontinent. The overall mean resting pressure was 22 mmHg, and the means for the continent, partially continent and incontinent groups were, respectively, 30.7 mmHg, 23 mmHg and 14.7 mmHg. The overall mean pressure response to voluntary contraction was 56 mmHg, and the means for the groups were 65.4 mmHg, 55.8 mmHg and 46.6 mmHg, respectively. The rectosphincteric reflex was absent in 82.9% of the cases. In the profilometry analysis for all patients together, blue (20 to 50 mmHg) and yellow (50 to 80 mmHg) were predominant, and there was a similar distribution for the continent and partially continent patients. However, among the incontinent patients, green (< 20 mmHg) and blue prevailed. CONCLUSIONS: Manometric and computerized profilometric analyses were an excellent method for postoperative evaluations on patients with intermediate and high anorectal anomalies, and for therapeutic planning.

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18

Brekalo, Ivana, Wenbing Yuan, Cristina Mottillo, et al. "Manometric real-time studies of the mechanochemical synthesis of zeolitic imidazolate frameworks." Chemical Science 11, no. 8 (2020): 2141–47. http://dx.doi.org/10.1039/c9sc05514b.

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19

Samanci, Cesur, Yilmaz Onal, and Ugur Korman. "Videofluoroscopic and Manometric Evaluation of Oropharyngeal and Esophageal Motility Disorders." Current Medical Imaging Formerly Current Medical Imaging Reviews 16, no. 1 (2020): 65–69. http://dx.doi.org/10.2174/157340561501190611154916.

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Background:Esophageal motility studies are performed in patients who have dysphagia that is not explained by stenosis. Diagnosis can be challenging and requires expertise in the interpretation of tests and symptoms.Aims:Our aim is to investigate the diagnostic value of videofluoroscopic swallowing study (VFSS) in combination with esophageal manometry.Study Design: :This study has a prospective study design.Methods:73 patients with dysphagia underwent videofluoroscopy in a standing position. Each subject swallowed barium boluses and findings were correlated with manometry findings.Results:The study cohort was categorized into five groups according to their disease as achalasia (31.1%), presbyesophagus (4.1%), scleroderma (5.5%), neurogenic dysphagia (6.8%), and other diseases (54.4%), which included gastroesophageal reflux, diffuse esophageal spasm, cricopharyngeal achalasia, and diseases with nonspecific VFSS patterns. When evaluating VFSS, the perfect agreement was observed between two observers in the final diagnosis. (kappa: 0.91, p<0,001Conclusion:Although it does not replace manometry, VFSS is important as an additional useful imaging method in EMDs.

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20

Muniak, W., Z. Witkiewicz, E. Woryna, E. Kusińska, A. Twardowski, and B. Goca. "Preparation of standard gaseous mixtures by a manometric method using the Benedict—Webb—Rubin equation." Journal of Chromatography A 436 (January 1988): 323–27. http://dx.doi.org/10.1016/s0021-9673(00)94590-4.

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21

Truong, Tuyen, Martin Palmer, Nidhi Bansal, and Bhesh Bhandari. "Investigation of solubility of carbon dioxide in anhydrous milk fat by lab-scale manometric method." Food Chemistry 237 (December 2017): 667–76. http://dx.doi.org/10.1016/j.foodchem.2017.05.141.

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22

Quigley, E. M., J. Dent, and S. F. Phillips. "Manometry of canine ileocolonic sphincter: comparison of sleeve method to point sensors." American Journal of Physiology-Gastrointestinal and Liver Physiology 252, no. 4 (1987): G585—G591. http://dx.doi.org/10.1152/ajpgi.1987.252.4.g585.

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Tonic and phasic pressures at the canine ileocolonic sphincter (ICS) were recorded by a manometric assembly that combined a sleeve sensor with multiple side-hole pressure ports. By aligning the side holes precisely it was possible to evaluate in vivo the fidelity of the sleeve relative to simultaneous pressure records from the point sensors. The ICS exhibited tonic and phasic pressures, often in excess of 100 cmH2O of pressure. The sleeve sensor was tolerant of small, but potentially important, movements of the assembly relative to the ICS. Point sites of recording moved in and out of the high-pressure zone and side holes were, therefore, not ideal sensors of sphincteric tone. The anticipated properties of this sleeve, that it would display reduced fidelity for rapid changes in pressure at sites away from its point of perfusion, were confirmed in vivo. The sleeve also “summarized” phasic bursts and was unable to monitor propagation of such events. However, the combined assembly proved excellent for examining overall function of the canine ICS.

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23

Xie, Lan-Gui, Xia Zhao, Si-Hong Dou, Long Tang, and Hui-Min Sun. "A new standard reference film for oxygen gas transmission measurements." Royal Society Open Science 6, no. 4 (2019): 190142. http://dx.doi.org/10.1098/rsos.190142.

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A novel reference film was characterized to improve the oxygen gas transmission measurement accuracy of plastic materials for pharmaceutical packaging. The material processing, homogeneity, stability, jointly determined value and uncertainty evaluation were discussed. The film is the first reference film characterized by multiple laboratories using both manometric and coulometric methods. The oxygen transmission rate of the reference film was 20.53 with the expanded uncertainty of 1.36. The newly characterized reference film can be used in the calibration and self-calibration of oxygen transmission measurement equipment and analytical method verification to improve the measurement accuracy and achieve traceable data.

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24

Keymel, Stefanie. "Management des Spontanpneumothorax: Die Therapieentscheidung mit digitaler pleuraler Manometrie beeinflussen." Kompass Pneumologie 8, no. 3 (2020): 150–51. http://dx.doi.org/10.1159/000508010.

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Background: The initial management of pneumothorax remains controversial, and we speculated that this might be because there is no method available for evaluation of air leak during initial management. We have developed a system for measurement of intrapleural pressure in pneumothorax to address air leak without the need for chest drainage. The aim of this clinical study was to confirm the ability of this measurement system and to determine the clinical impact of management of air leak. Methods: Patients in whom need aspiration was indicated for spontaneous pneumothorax were enrolled in the study. The intrapleural pressure was measured during stable breathing and data recorded when patients were coughing were excluded. Results: Eleven patients were enrolled in the study between December 2016 to July 2017. The patterns in change of intrapleural pressure varied widely depending on the state of the pneumothorax. The mean intrapleural pressure values on end-inspiration and end-expiration in patients with persistent air leak was significantly lower than those in patients without persistent air leak (p = 0.020). The number of negative mean pressure recordings in endinspiration and end-expiration was significantly lower in patients with persistent air leak than in those without persistent air leak (p = 0.0060). Conclusions: In this study, we demonstrated that intrapleural pressure could be successfully measured and visualized in patients with pneumothorax. Whether or not the pressure value is a predictor of persistent air leak needs to be confirmed in the future.

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Safarov, Ismoil, Мuhsin Теshaev, Sharifboy Axmedov, Doniyor Rayimov, and Farhod Homidov. "Manometric Tubular Springs Oscillatory Processes Modeling with Consideration of its Viscoelastic Properties." E3S Web of Conferences 264 (2021): 01010. http://dx.doi.org/10.1051/e3sconf/202126401010.

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This article is dedicated to the operation and management of systems of machine-building and aviation enterprises, systems of production, transport, storage of oil and gas, issues of control of technological processes are of great importance. Control of technological processes is carried out by monitoring the pressure and other parameters. These measuring instruments must have high reliability and the necessary accuracy. In this connection, there is a sharp increase in interest in determining the dynamic parameters of the elements of measuring devices. The main elements of such devices are monomeric tubular springs (Bourdon tubes). The paper considers the natural and forced steady-state oscillations of a thin curved rod interacting with a liquid. Based on the principle of possible displacements, a resolving system of partial differential equations and the corresponding boundary conditions are obtained. The problem is solved numerically by the Godunov orthogonal run method, and the Muller method and the Eigen frequencies found are compared with the experimental results. As a result, for a given axial perturbation, it was possible to select such an effect, in the orthogonal direction, that the amplitude of the longitudinal vibrations of the rod at the first resonance decreased by 20 times. The described vibration damping effect is due to the interrelation of transverse and longitudinal vibrations and is fundamentally impossible in the case of a straight rod.

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26

Van Aardt, W. J. "Respirometrie — soos toegepas op terrestriële en akwatiese invertebrate." Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie 9, no. 4 (1990): 162–77. http://dx.doi.org/10.4102/satnt.v9i4.470.

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A review is presented of the apparatus and techniques used to determine the oxygen consumption rate (MO₂) of terrestrial and aquatic invertebrates. The classic manometric method (especially constant pressure respirometry) has been extensively used in the past to measure MO₂. At present this method is still being used with success for small invertebrates weighing less than 1 mg in live weight. The more modern electrochemical techniques have the advantage that measurements can be made over longer time intervals because these instruments are better suited to automation. MO₂ measurements were first performed on aquatic animals with polarographic oxygen sensors. After the invention of the zirkonium oxygen sensor it is now possible to make accurate measurements of MO₂ on bigger terrestrial invertebrates.

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27

Velardi, Salvatore A., Valeria Rasetto, and Antonello A. Barresi. "Dynamic Parameters Estimation Method: Advanced Manometric Temperature Measurement Approach for Freeze-Drying Monitoring of Pharmaceutical Solutions." Industrial & Engineering Chemistry Research 47, no. 21 (2008): 8445–57. http://dx.doi.org/10.1021/ie7017433.

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28

Чубукін, О. С. "The calculation of wound tubular manometric springs sensitivity of average thickness by the shells theory method." Збірник наукових праць Харківського національного університету Повітряних Сил, no. 1(55) (February 27, 2018): 146–52. http://dx.doi.org/10.30748/zhups.2018.55.20.

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29

Porter, Martin J., A. Richard Maw, David H. Kerridge, and Ian M. Williamson. "Manometric Rhinometry: A New Method of Measuring the Volume of the Air in the Nasal Cavity." Acta Oto-Laryngologica 117, no. 2 (1997): 298–301. http://dx.doi.org/10.3109/00016489709117791.

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30

Hol, Sander, Yves Gensterblum, and Christopher J. Spiers. "Direct determination of total CO2 uptake by coal: A new technique compared with the manometric method." Fuel 105 (March 2013): 192–205. http://dx.doi.org/10.1016/j.fuel.2012.08.002.

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31

Karhu, M., J. Kaakinen, T. Kuokkanen, and J. Rämö. "Biodegradation of Light Fuel Oils in Water and Soil as Determined by the Manometric Respirometric Method." Water, Air, and Soil Pollution 197, no. 1-4 (2008): 3–14. http://dx.doi.org/10.1007/s11270-008-9752-6.

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32

Tanaka, Rumi, Akio Inui, Akihiro Asakawa, Kaori Atsuchi, Koji Ataka, and Mineko Fujimiya. "New method of manometric measurement of gastroduodenal motility in conscious mice: effects of ghrelin and Y2 depletion." American Journal of Physiology-Gastrointestinal and Liver Physiology 297, no. 5 (2009): G1028—G1034. http://dx.doi.org/10.1152/ajpgi.90692.2008.

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Since no previous studies have reported dual measurements of stomach and duodenal motility in conscious mice, we developed a manometric method to measure the gastroduodenal motility in the physiological fed and fasted states of conscious mice. By this method we measured, for the first time, the gastroduodenal motility in Y2 knockout mice and analyzed the effects of ghrelin on the gastroduodenal motility in conscious mice. To evaluate this new method, we provide the comparison on the effects of CCK-8 examined by present and previous methods. In the fasted state of mice, phase III-like contractions with frequencies of 7.8 ± 0.5 contractions/h in the antrum and 6.6 ± 0.7 contractions/h in the duodenum were observed. This fasted pattern was disrupted and replaced by the fed pattern after feeding, with an increase of the motor index (MI) immediately after feeding. Intravenous injection of ghrelin induced the fasted pattern in the duodenum when injected in the fed state and increased %MI (114.3 ± 9.8%) compared with saline-injected controls (64.4 ± 9.6%) in the antrum. Intravenous injection of CCK-8 disrupted phase III-like contractions in both antrum and duodenum, which were replaced by fed-like motor patterns accompanied with the elevation of baseline pressure. In Y2 knockout mice, the frequency of phase III-like contractions was decreased in the antrum compared with wild-type mice and the immediate increase of MI after feeding seen in wild-type mice was disrupted in Y2 knockout mice. Our model provides a new method for studies of gastrointestinal motility in various mouse models, including transgenic and knockout ones.

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Wen, Zhi-You, and Jian-Jiang Zhong. "A simple and modified manometric method for measuring oxygen uptake rate of plant cells in flask cultures." Biotechnology Techniques 9, no. 7 (1995): 521–26. http://dx.doi.org/10.1007/bf00159570.

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34

Rubal, B. J., J. A. Ward, B. S. Jordan, et al. "317: A Manometric Method for Evaluating Flow Dynamics and Thrombus Burden of Intraosseous Devices: Theory and Application." Annals of Emergency Medicine 54, no. 3 (2009): S99. http://dx.doi.org/10.1016/j.annemergmed.2009.06.348.

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35

Trancoso, Maria Ascensão, and Sandra Catarina S. Calisto. "Comparison of models for estimation of measurement uncertainties. Determination of BOD5 in wastewaters using a manometric method." Accreditation and Quality Assurance 13, no. 1 (2007): 19–28. http://dx.doi.org/10.1007/s00769-007-0327-9.

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36

Benard, Thierry, Michel Bouchoucha, Michel Dupres, and Paul-Henri Cugnenc. "In vitro analysis of rat intestinal wall movements at rest and during propagated contraction: a new method." American Journal of Physiology-Gastrointestinal and Liver Physiology 273, no. 4 (1997): G776—G784. http://dx.doi.org/10.1152/ajpgi.1997.273.4.g776.

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Intestinal wall motions are not easily studied and are frequently deduced from manometric and electromyographic measurements. This study aimed to establish a method of wall movement analysis based on an automatic technique of image processing. Segments of rat jejunum were fixed in an organ bath under isometric conditions. A real-time edge-detection algorithm was used to find the contours of the intestine using video imaging. After the measurement, a mapping of intestinal wall movements was performed based on diameter variations. In the 260 experiments without stimulation, intestinal wall activity was always detected. Propagated activity was found in 40% of the experiments and periodic wall motion in 60%, with 0.5-Hz activity found more frequently (41%) than 0.24-Hz activity (19%). These cyclic activities, related to intestinal slow waves, had their amplitude decreased by acetylcholine and were modified by vapreotide. Analysis of a propagated wave after cholinergic stimulation showed that it is characterized by an increase of the diameter of the intestine followed by a decrease. Moreover, this methodology allows analysis of the initiation of a propagated wave.

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37

Xia, Hua, Jeffrey Vriens, and David DeWire. "Uptake Rate of Hydrogen Getter for Effectively Removing Outgassed H2 from Microelectronic Packages." International Symposium on Microelectronics 2020, no. 1 (2020): 000298–301. http://dx.doi.org/10.4071/2380-4505-2020.1.000298.

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Abstract Hydrogen absorption kinetic properties of palladium foil-based getter elements have been studied by manometric method based pressure amplitude measurement. The getter H2 uptake rate can be simply converted by pressure amplitude change, and can be fairly described by a mixed gas sorption modeling analysis. It has been found that the sorption rate of Pd-based getter element has a maximum rate of 40 ppm/min at initial absorption stage but it gets slowly down to 0.5ppm/min when approaching maximum sorption capacity, determined by a getter foil thickness. Based on different H2 outgassing rates of metal and polymer based package materials, a safety factor based methodology has been proposed for down selecting an appropriate getter element that can effectively removing outgassed H2 from microelectronic packages.

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Cavenaghi, Simone, Otaviano Cardoso da Silva Felicio, Luis Sergio Ronchi, Geni Satomi Cunrath, Marcelo Maia Caixeta de Melo, and João Gomes Netinho. "Prevalence of rectoanal inhibitory reflex in chagasic megacolon." Arquivos de Gastroenterologia 45, no. 2 (2008): 128–31. http://dx.doi.org/10.1590/s0004-28032008000200007.

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BACKGROUND: Rectoanal inhibitory reflex is not always evident in patients with chagasic megacolon. This may be due to insufficient volumes of air used during insufflation for the manometric examination. AIMS: To identify the volume of air necessary to induce rectoanal inhibitory reflex in patients with chagasic megacolon and to observe its prevalence in these individuals. METHODS: Rectoanal inhibitory reflex in 39 patient with chagasic megacolon was studied by means of anorectal manometry using the balloon method. The balloon was insufflated using sequential volumes up to 300 mL to induce reflex. RESULTS: Rectoanal inhibitory reflex was identified in 43.6% of the patients using a mean volume of 196 mL of insufflated air (standard error = 13.5). CONCLUSION: Rectoanal inhibitory reflex can be induced in patients with chagasic megacolon when greater volumes of air are used.

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Arlander, Eva, Robert Löfberg, Leif Törkvist, and Ulrik Lindforss. "Exploring Anorectal Manometry as a Method to Study the Effect of Locally Administered Ropivacaine in Patients with Ulcerative Colitis." ISRN Gastroenterology 2013 (February 17, 2013): 1–8. http://dx.doi.org/10.1155/2013/656921.

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The symptoms of distal ulcerative colitis have been related to changes in rectal sensitivity and capacity due to inflammation, altered gastrointestinal motility, and sensory perception. With the use of anorectal manometry, the function was measured in seven patients with active distal proctitis during local treatment with ropivacaine. Seven healthy subjects were studied in the same way for comparison with normal conditions. The anal resting pressure and squeezing pressure were similar in all groups. Significantly lower rectal distention volumes were required for rectal sensation, critical volume, and to induce rectal contractility in patients with active disease compared to controls. Rectal compliance was significantly reduced in patients with active and quiescent disease. The increased rectal sensitivity and contractility in patients with active colitis appear to be related to active mucosal inflammation and ulceration. The frequency and urgency of defecation and the fecal incontinence may be due to a hypersensitive, hyperactive, and poorly compliant rectum. The findings in our study indicate that the inflammatory damage to the rectal wall with poor compliance is unaffected by local anaesthetics such as ropivacaine. The symptomatic relief and reduction in clinical symptoms following treatment are not reflected in the anorectal manometric findings.

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Kaakinen, Juhani, Pekka Vähäoja, Toivo Kuokkanen, and Katri Roppola. "Studies on the Effects of Certain Soil Properties on the Biodegradation of Oils Determined by the Manometric Respirometric Method." Journal of Automated Methods and Management in Chemistry 2007 (2007): 1–7. http://dx.doi.org/10.1155/2007/34601.

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The biodegradability of certain biofuels was studied in the case of forest soils using the manometric respirometric technique, which was proved to be very suitable for untreated, fertilized as well as pH adjusted soils. Experiments carried out in infertile sandy forest soil gave a BOD/ThOD value of 45.1% for a typical model substance, that is, sodium benzoate after a period of 30 days and mineral addition improved the BOD/ThOD value to a value of 76.2%. Rapeseed oil-based chain oil almost did not biodegrade at all in 30 days in nonprocessed soil, and when pH was adjusted to 8.0, the BOD/ThOD value increased slightly to a value of 7.4%. Mineral addition improved the BOD/ThOD value on average to 43.2% after 30 days. The combined mineral addition and pH adjustment together increased the BOD/ThOD value to 75.8% in 30 days. The observations were similar with a rapeseed oil-based lubricating oil: after 30 days, the BOD/ThOD value increased from 5.9% to an average value of 51.9%, when the pH and mineral concentrations of the soil were optimized. The mineral addition and pH adjustment also improved the precision of the measurements significantly.

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Pehl, Christian, Ilona Boccali, Barbara Wendl, Ralf Czekalla, Thomas Schmidt, and Wolfgang Schepp. "Can the manometric method of pH-probe placement for 24 hour pH-metry be replaced by the pH step-up method in clinical routine." Gastroenterology 118, no. 4 (2000): A1291. http://dx.doi.org/10.1016/s0016-5085(00)81020-3.

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Triantafyllou, Tania, Charalampos Theodoropoulos, Georgios Zografos, and Dimitrios Theodorou. "PS01.003: EVALUATION OF BOTH STANDARD AND NOVEL HRM METRICS OF THE UPPER ESOPHAGEAL SPHINCTER (UES) IN ACHALASIA AND REFLUX DISEASE. APPLICATION OF THE CONTRACTILE INTEGRAL IN THE UES." Diseases of the Esophagus 31, Supplement_1 (2018): 50. http://dx.doi.org/10.1093/dote/doy089.ps01.003.

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Abstract Background The literature is still lacking thorough manometric analysis of the function of the Upper Esophageal Sphincter (UES) among patients with motility disorders. Assessment of the High Resolution Manometry (HRM) features of the UES may be the key in further understanding the manometric profile of achalasia and even predicting treatment outcome. Furthermore, the Contractile Integral (CI) may be a more representative measure of contractility of the UES too. Methods Achalasia patients (study group) and a control group of individuals underwent HRM. Resting pressure, residual pressure, UES length and the Landmark UES-CI corrected for respiration were analyzed and compared between the two groups. The UES-CI metric was calculated according to the method applied for the Distal Contractile Integral (DCI). Results 24 achalasia patients and 24 subjects consisting the control group with mean age 55.2 and 56.1, respectively, were enrolled. Although the mean UES length was found significantly lower in our study group (3.2 vs. 4.3, P = 0), mean residual pressure was found significantly higher among the same group as compared to controls (12.5 vs. 3, P = 0.01). Interestingly, we found a trend towards lower values of the corrected UES-CI in achalasia compared to the control group (132 vs. 207.8, P = 0.08). The resting pressure did not differ between the two groups. Conclusion Increased residual pressure values of the UES in achalasia compared to control group is a reasonable finding that indicates that UES may also be affected by the neuronal damage in this disorder or that the pressurization phenomenon (mainly in achalasia type II) disrupts the function of the UES during swallowing. However, results on the UES-CI in resting phase cannot confirm the hypothesis of higher risk of aspiration among achalasia patients whose esophageal lumen is known to present with incomplete clearance and stasis. Disclosure All authors have declared no conflicts of interest.

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Bak, T. "A manometric method for the determination of chemical diffusion in non-stoichiometric oxides: Example of (La,Sr)Mn)O3." Solid State Ionics 135, no. 1-4 (2000): 557–61. http://dx.doi.org/10.1016/s0167-2738(00)00636-6.

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Keller, J. U., N. Iossifova, and W. Zimmermann. "Volumetric–Densimetric Measurements of the Adsorption Equilibria of Binary Gas Mixtures." Adsorption Science & Technology 23, no. 9 (2005): 685–702. http://dx.doi.org/10.1260/026361705776316550.

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A new method for measuring the binary co-adsorption equilibria of gas mixtures with non-isomeric components on porous solids such as activated carbons or zeolites is proposed. The method does not require an analysis of the sorptive gas phase in adsorption equilibrium and can be automated fairly simply. It consists of a simple volumetric/manometric gas expansion arrangement combined with the measurement of the density of the sorptive gas mixture in equilibrium via the buoyancy of a sinker fixed to a microbalance. These gas density measurements can be performed on-line preferably with a magnetic suspension balance (MSB) (Rubotherm GmbH, Bochum, Germany, 2-site-type). The experimental lay-out of the instrument used is given and the measurement procedure is outlined. The theory of the measurement is presented and expressions for experimental uncertainties of component masses adsorbed are provided. As examples, the co-adsorption equilibria data of gas mixtures (CO2/CH4) and (H2/CH4) on activated carbon (D47/3, CarboTech, Essen, Germany) at 293 K and 333 K for pressures up to 2 MPa are presented and discussed to a certain extent.

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Štencl, Jiří, and Tomáš Komprda. "Water activity changes of multicomponent food mixture during processing." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 52, no. 4 (2004): 111–18. http://dx.doi.org/10.11118/actaun200452040111.

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Water activity of multicomponent food mixture was analysed and measured. Samples of dry fermented sausages with two different starter cultures (Pediococcus pentosaceus + Staphylococcus carnosus and Staphylococcus carnosus + Staphylococcus xylosus + Lactobacillus farciminis) were tested during ripening (21 days) and storing (91 days). The basic raw materials were the same for all samples: lean beef meat, lean pork and pork fat in equal parts, nitrite salt mixture (2.5 %), and sugars (1.0 %). The method used for water activity tests was indirect manometric in a static environment. Moisture content of samples was measured using halogen dryer. The course of water activity and moisture content of sausages was variable during ripening and steady during storage. Diagrams showed gradual decrease of both parameters. Mathematical models of water activity and moisture content for storage of dry fermented sausages were developed and statistically verified. The influence of starter cultures was not significant.

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Badwal, S. P. S., S. P. Jiang, J. Love, J. Nowotny, M. Rekas, and E. R. Vance. "A manometric method for the determination of chemical diffusion in perovskite-type cathode materials of the solid oxide fuel cell." Ceramics International 27, no. 4 (2001): 431–41. http://dx.doi.org/10.1016/s0272-8842(00)00098-5.

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Scaglione, D., S. Caffaz, E. Ficara, F. Malpei, and C. Lubello. "A simple method to evaluate the short-term biogas yield in anaerobic codigestion of WAS and organic wastes." Water Science and Technology 58, no. 8 (2008): 1615–22. http://dx.doi.org/10.2166/wst.2008.502.

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The present study was aimed at setting and applying a procedure to measure the anaerobic degradability of different organic substrates by short-term tests (2–7 days) carried out at lab-scale with a low food to biomass (F/M) ratio. All tests were carried out using an acclimated sludge taken from a pilot-plant anaerobic digester (200 L). Trials were performed with a manometric system. The experimental reliability of the device in measuring the anaerobic degradability was assessed by several preliminary tests carried out using acetate and glucose as reference substrates. The average conversion to methane was 99% for acetate and of 83% for glucose. The results of tests in triplicate showed the high repeatability of the method with an average coefficient of variation lower than 2%. Then, the lab-scale procedure was applied to study the short-term anaerobic degradability of complex organic substrates: thickened waste activated sludge, two kinds of organic fraction of municipal solid waste (a kitchen waste and a fruit and vegetable waste collected at the wholesale market of Florence), olive mill wastewater and freshly harvested grass. Results indicated that organic fraction of municipal solid waste, olive mill wastewater and grass were characterized by a much higher anaerobic degradability if compared to the thickened activated sludge, well in agreement with literature data.

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Zang, Wang, and Liu. "Phenomenological Over-Parameterization of the Triple-Fitting-Parameter Diffusion Models in Evaluation of Gas Diffusion in Coal." Processes 7, no. 4 (2019): 241. http://dx.doi.org/10.3390/pr7040241.

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Gas diffusivities of coal are not measured directly but are normally regressed by fitting mathematical diffusion models to fractional sorption data measured in sorption experiments. This paper firstly measured three fractional adsorption curves at various equilibrium pressures with the manometric method. The measured fractional adsorption curves were then modeled with one single-fitting-parameter (SFP) model and three triple-fitting-parameter (TFP) models. The modeling results showed that the TFP models were phenomenologically over-parameterized due to the usage of three fitting parameters, which may be excessive for curve fitting. The phenomenological over-parameterization resulted in multiple pressure-dependences of gas diffusivity for the TFP models. The TFP models should thus be carefully used. On the other hand, the dual-fitting-parameter (DFP) models also have excellent performance in curve fitting and can produce interpretable modeling results. The DFP models can be used as an alternative to the TFP model in the future.

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Fransson, S. G., H. Sökjer, K. E. Johansson, and L. Tibbling. "Radiologic Diagnosis of Gastro-Oesophageal Reflux." Acta Radiologica 30, no. 2 (1989): 187–92. http://dx.doi.org/10.1177/028418518903000214.

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In 149 patients, a standardized radiologic method for the detection of gastro-oesophageal reflux was applied and compared with the results obtained at endoscopy and by a manometric reflux test. Radiologic reflux was recorded in 53 patients, of whom 25 had reflux without abdominal compression and 51 with compression. At least one of the other two types of examination disclosed pathologic conditions in all but 2 of 53 patients. Oesophagitis was significantly more severe among the patients with reflux observed at radiography. The presence of hiatal incompetence with reflux only to the hiatal hernia but not to the oesophagus was not a strong indicator of gastro-oesophageal reflux disease. Hiatal hernia was present in a significantly larger number of the patients with reflux at radiography than in those without reflux. Increased width of the hiatus gave stronger evidence for reflux disease than in patients with a normal hiatus. Thus, the width of the hiatus also had a bearing on the diagnosis of gastro-oesophageal reflux disease.

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Banipal, T. S., B. S. Lark, and S. Singh. "Excess Gibbs energy for binary mixtures of acetonitrile with acetic acid, propionic acid, isobutyric acid, and trimethylacetic acid." Canadian Journal of Chemistry 69, no. 12 (1991): 2117–21. http://dx.doi.org/10.1139/v91-305.

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Total vapour pressures for binary mixtures containing acetic acid, propionic acid, isobutyric acid, and trimethylacetic acid with acetonitrile have been measured for the entire composition range at 298.15 and 318.15 K using a static manometric method. All systems show positive deviations from Raoult's law, enhanced by both an increase in temperature and an increase in the methylation of acetic acid. Activity coefficients have been calculated by taking into consideration the dimerization of these carboxylic acids in the vapour phase. TSE values obtained from GE and earlier reported HE values are found to be negative for acetic acid, about zero for propionic and isobutyric acids, and positive for trimethylacetic acid for the whole composition range. The results have been interpreted in terms of various contributions such as depolymerization, heteromolecular dipole–dipole interactions, and the increasing dimerization constant and steric hindrance with increase of complexity of the acid. Key words: excess Gibbs energy, carboxylic acids, acetonitrile, activity coefficients

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