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Journal articles on the topic 'Gravimetrics'

To see the other types of publications on this topic, follow the link: Gravimetrics.

Author: Grafiati

Published: 10 December 2022

Last updated: 28 January 2023

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1

Pang, Bob, Marc Earl, Scott Knoer, Angela Yaniv, Marc Willner, and Anthony Boyd. "Comparison of IV oncology infusions compounded via robotics and gravimetrics-assisted workflow processes." American Journal of Health-System Pharmacy 78, no. 2 (October 16, 2020): 122–34. http://dx.doi.org/10.1093/ajhp/zxaa366.

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Abstract Purpose A study was conducted to compare an intravenous (IV) gravimetric technology–assisted workflow (TAWF) platform to an IV robotic system. In the study we reviewed both IV technology platforms using the same gravimetric quality assurance system, which allowed for direct comparison. Methods All oncology preparations compounded from January 2016 through December 2018 using either system were included in our retrospective analysis. Final preparation accuracy, IV system precision, and workflow throughput (analyzed using lean process methodologies) were evaluated. Results Data analysis indicated that use of the IV gravimetric TAWF system was associated with a significantly lower percentage of accuracy errors compared to the IV robotics system (1.58% vs 2.47%, P < 0.001), with no significant difference in absolute precision (1.12 vs 1.12 P = 0.952). Lean analysis demonstrated that overall completion time (17:49 minutes vs 24:45 minutes) and compound preparation time (2:39 minutes vs 6:07 minutes) were less with the IV gravimetric TAWF vs the IV robotics system. Conclusion Implementation of either an IV gravimetric TAWF system or IV robotics system will result in similar compounding accuracy and precision. Preparation time was less with use of the IV gravimetric TAWF vs the IV robotic system, but the IV robotic system required less human intervention. Both systems ensure medication safety for patients, although the IV robotic system has increased safeguards in place. Therefore, the primary driver for implementing these systems is alternative factors such as cost of systems implementation and maintenance, employee safety, and drug waste.

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Piškur, Barbara, Janja Zule, Mitja Piškur, Dušan Jurc, and Franc Pohleven. "Fungal wood decay in the presence of fly ash as indicated by gravimetrics and by extractability of low molecular weight volatile organic acids." International Biodeterioration & Biodegradation 63, no. 5 (July 2009): 594–99. http://dx.doi.org/10.1016/j.ibiod.2009.04.002.

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3

Gomes, Luciana Paulo, Vinícius Martins Marques, Marcelo Oliveira Caetano, Marchello Luiz Grando, Atilio Efrain Bica Grondona, and Greice Carvalho Urruth. "Gravimetria de resíduos sólidos depositados em aterro sanitário antes e durante a pandemia de covid-19." Revista Ibero-Americana de Ciências Ambientais 12, no. 9 (October 20, 2021): 233–44. http://dx.doi.org/10.6008/cbpc2179-6858.2021.009.0019.

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É de suma importância o conhecimento de quais resíduos estão sendo descartados nos aterros, para que seja possível identificar processos que auxiliarão em uma maior eficácia no uso destas áreas, evitando que resíduos que tenham potencial de reciclagem ou compostagem tenham esse destino final. Além disso, o cenário da pandemia de Covid-19 trouxe incertezas quanto a taxa de geração e gravimetria dos resíduos. Com isso, este estudo objetiva determinar a gravimetria dos RSU enviados para o aterro sanitário de São Leopoldo, durante os anos de 2019 e 2020, através do monitoramento de entrada de caminhões no aterro. Evidenciou-se que os RSU são oriundos de coletas regulares municipais, além de outros grandes geradores, como empresas, indústrias e supermercados. Desta forma, através das gravimetrias municipais, obtidas nos PMSB destas localidades, foi possível determinar o montante de cada tipo de RSU e assim estimar a gravimetria durante os períodos analisados. Como resultado final, este estudo indicou que houve crescimento de 1,88% no montante anual depositado, porém quando observadas as gravimetrias, a alteração foi mínima, com o percentual de matéria orgânica putrescível variando de 41% a 40%, os Contaminantes Biológicos e Outros de 27% para 28% e os recicláveis 32% durante todo o período analisado. Diante disto, independente do cenário da pandemia, sugere-se que seja implantada uma Central de Triagem, bem como um pátio de compostagem, afim de otimizar o uso do aterro, evitando que materiais com potencial de reciclagem ou compostagem tenham esta destinação final.

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Noviyanty, Yuska Noviyanty, Herlina Herlina, and Cahyan Fazihkun. "IDENTIFICATION AND DETERMINATION OF SAPONIN LEVELS FROM BIDURROT EXTRACT (Calotropis gigantea L) USING GRAVIMETRY METHOD." Journal of Pharmaceutical And Sciences 3, no. 2 (December 31, 2020): 100–105. http://dx.doi.org/10.36490/journal-jps.com.v3i2.52.

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Biduri plants (Calotropis gigantea L) are used as medicinal plants, namely as cough and anti-allergic medicines. Research conducted by (Suchita Siggn. 2014) shows the presence of glycoside compounds, saponins, alkaloids, flavonoids, and tannins. then the researchers are interested in carrying out research on the identification and determination of saponin levels from the extract of the baby root (Calotropis gigantea L) by the Gravimetri method. Qualitative test was carried out by inserting 500 mg of biduri root extract (Calotropis gigantea L) into a test tube, then adding 10 ml of hot water, shaking vigorously for 10 seconds and adding HCL, then a quantitative test was carried out using the gravimetric method. Based on the results of research that has been carried out the extract of the betel root (Calotropis gigante L) positive containing saponin compounds with saponin content is 2.6% with a weight of 1.16 gram saponins using the gravimetric method

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Noviyanty, Yuska Noviyanty, Herlina Herlina, and Cahyan Fazihkun. "IDENTIFICATION AND DETERMINATION OF SAPONIN LEVELS FROM BIDURROT EXTRACT (Calotropis gigantea L) USING GRAVIMETRY METHOD." Journal of Pharmaceutical And Sciences 3, no. 2 (December 31, 2020): 100–105. http://dx.doi.org/10.36490/journal-jps.com.v3i2.52.

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Biduri plants (Calotropis gigantea L) are used as medicinal plants, namely as cough and anti-allergic medicines. Research conducted by (Suchita Siggn. 2014) shows the presence of glycoside compounds, saponins, alkaloids, flavonoids, and tannins. then the researchers are interested in carrying out research on the identification and determination of saponin levels from the extract of the baby root (Calotropis gigantea L) by the Gravimetri method. Qualitative test was carried out by inserting 500 mg of biduri root extract (Calotropis gigantea L) into a test tube, then adding 10 ml of hot water, shaking vigorously for 10 seconds and adding HCL, then a quantitative test was carried out using the gravimetric method. Based on the results of research that has been carried out the extract of the betel root (Calotropis gigante L) positive containing saponin compounds with saponin content is 2.6% with a weight of 1.16 gram saponins using the gravimetric method

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6

Gimenez, Mario E., Carla Braitenberg, M. Patricia Martinez, and Antonio Introcaso. "A Comparative Analysis of Seismological and Gravimetric Crustal Thicknesses below the Andean Region with Flat Subduction of the Nazca Plate." International Journal of Geophysics 2009 (2009): 1–8. http://dx.doi.org/10.1155/2009/607458.

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A gravimetric study was carried out in a region of the Central Andean Range between28∘and32∘south latitudes and from72∘and66∘west longitudes. The seismological and gravimetrical Moho models were compared in a sector which coincides with the seismological stations of the CHARGE project. The comparison reveals discrepancies between the gravity Moho depths and those obtained from seismological investigations (CHARGE project), the latter giving deeper values than those resulting from the gravimetric inversion. These discrepancies are attenuated when the positive gravimetric effect of the Nazca plate is considered. Nonetheless, a small residuum of about 5 km remains beneath the Cuyania terrane region, to the east of the main Andean chain. This residuum could be gravimetrically justified if the existence of a high density or eclogitized portion of the lower crust is considered. This result differed from the interpretations from Project “CHARGE” which revealed that the entire inferior crust extending from the Precordillera to the occidental “Sierras Pampeanas” could be “eclogitized”. In this same sector, we calculated the effective elastic thickness (Te) of the crust. These results indicated an anomalous value of Te = 30 km below the Cuyania terrane. This is further conclusive evidence of the fact that the Cuyania terrane is allochthonous, for which also geological evidences exist.

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Petroškevičius, Petras, Rosita Birvydienė, Romuald Obuchovski, and Eimuntas Paršeliūnas. "INVESTIGATION INTO MEASUREMENTS USING GRAVIMETERS SCINTREX CG-5 / MATAVIMŲ SCINTREX CG-5 GRAVIMETRAIS ANALIZĖ / АНАЛИЗ ИЗМЕРЕНИЙ, ПРОВЕДЕННЫХ ГРАВИМЕТРАМИ SCINTREX CG-5." Geodesy and Cartography 37, no. 4 (January 11, 2012): 154–58. http://dx.doi.org/10.3846/13921541.2011.645338.

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The article investigates four automatic gravimeters Scintrex CG-5. With reference to the measurements of the gravimetric calibration base set up in Lithuania, linear scale coefficients and the character of changes in the linear scale coefficients of gravimeters were estimated. The paper examines the vertical gradient of gravity acceleration in the eight-floor building, evaluates the range of changes into gravimeter drifts under laboratory conditions and describes daily gravimeter drift during gravimetric measurements. Santrauka Atlikti keturių Scintrex CG-5 gravimetrų tyrimai. Remiantis gravimetrinės bazės, įrengtos Lietuvos teritorijoje, matavimų duomenimis, nustatyta gravimetrų kalibravimo koeficientai ir jų kitimo pobūdis. Atlikti sunkio pagreičio vertikaliojo gradiento aštuonių aukštų pastate tyrimai. Laboratorinėmis sąlygomis nustatytas gravimetrų paros nulio slinkties kitimo diapazonas. Atlikti gravimetrų nulio slinkties matavimų metu tyrimai. Резюме Проведены исследования четырех гравиметров Scintrex CG-5. На основании измерений гравиметрической базы, находящейся на территории Литвы, получены коэффициенты калибровки гравиметров. Проведены исследования вертикального градиента ускорения силы тяжести в восьмиэтажном здании. Определен диапазон изменения лабораторного суточного смещения нуль-пункта гравиметров. Также оценено смещение нуль-пункта гравиметров во время измерений гравиметрической базы.

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Lucklum, Ralf, Carsten Behling, and Peter Hauptmann. "Gravimetric and non-gravimetric chemical quartz crystal resonators." Sensors and Actuators B: Chemical 65, no. 1-3 (June 2000): 277–83. http://dx.doi.org/10.1016/s0925-4005(99)00311-1.

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Jürgenson, Harli, Kristina Türk, and Jüri Randjärv. "DETERMINATION AND EVALUATION OF THE ESTONIAN FITTED GEOID MODEL EST-GEOID 2003 / ESTIJOS GEOIDO MODELIO EST-GEOID 2003 SUDARYMAS IR VERTINIMAS / СОЗДАНИЕ И ОЦЕНКА МОДЕЛИ ГЕОИДА ЭСТОНИИ EST-GEOID2003." Geodesy and Cartography 37, no. 1 (April 15, 2011): 15–21. http://dx.doi.org/10.3846/13921541.2011.558339.

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This paper focuses on issues related to the calculation of a high-precision fitted geoid model on Estonian territory. Model Est-Geoid2003 have been used in Estonia several years in geodesy and other applications. New data from precise levelling, new global models and terrestrial gravity data give plenty of possibilities for updates and accuracy evaluation. The model is based on a gravimetric geoid. From the gravimetric data gathered, a gravimetric geoid for Estonia was calculated as an approximately 3-km net using the FFT method. After including the new gravimetric data gathered, the gravimetric geoid no longer had any significant tilt relative to the height anomalies derived from GPS-levelling points. The standard deviation between the points was 2.7 cm. The surface of the calculated gravimetric geoid was fitted by high-precision GPS-levelling points. As a result, a height transformation model was determined to reflect the differences between the normal heights of BK77 and the ellipsoidal heights of EUREF-EST97 on Estonian territory. The model was originally called Est-Geoid2003 and is part of the official national geodetic system in Estonia. The model is updated and evaluated here using precise GPS-levelling points obtained from different measurement campaigns. In 2008–2010 the preliminary results from the latest precise levelling sessions became available, leading to a significant increase in the number of precise GPS-levelling points. Both networks are part of the Estonian integrated geodetic network. Using very precise levelling connections from new levelling lines, normal heights of several RGP points were calculated additionally. Misclosure of 300 km polygons are less than 2–3 mm normally. Ealier all precisely levelled RGP points were included into fitting points. Now many new points are available for fitting and independent evaluation. However, the use of several benchmarks for the same RGP point sometimes results in a 1–2 cm difference in normal height. This reveals problems with the stability of older wall benchmarks, which are widely used in Estonia. Even we recognized, that 0.5 cm fitted geoid model is not achievable using wall benchmarks. New evaluation of the model Est-Geoid2003 is introduced in the light of preliminary data from new precise levelling. Model accuracy is recognised about 1.2 cm as rms. Santrauka Akcentuojami klausimai, susiję su tiksliausio Estijos geoido modelio skaičiavimu. Šis modelis Estijoje geodezijoje ir kitose mokslo bei technikos šakose taikomas nuo 2003 metų. Nauji precizinės niveliacijos duomenys, nauji globalieji geopotencialo modeliai ir žemyno gravimetriniai duomenys – prielaidos geoido modeliui atnaujinti ir jo tikslumui įvertinti. Modelio pagrindas – gravimetrinis geoidas. Pagal surinktus gravimetrinius duomenis Estijos geoidas buvo apskaičiuotas greitųjų Furjė tranformacijų (FFT) metodu, sukuriant apie 3 km akių tinklą. Įtraukus naujuosius gravimetrinius duomenis, gravimetrinis geoidas daugiau nebeturi aukščių anomalijų. Vidutinė kvadratinė paklaida – 2,7 cm. Apskaičiuoto gravimetrinio geoido paviršius susietas su aukščių sistema pagal GPS niveliacijos taškus. 2008–2010 m. gavus precizinės niveliacijos duomenis, žymiai padidėjo GPS niveliacijos taškų skaičius bei jų tikslumas, nes precizinės niveliacijos poligonų iki 300 km nesąryšiai gauti mažesni nei 2–3 mm. Įvertinus naujo Estijos geoido modelio tikslumą nustatyta 1,2 cm vidutinė kvadratinė paklaida. Резюме Акцентируются вопросы, касающиеся вычисления точной модели геоида Эстонии. Эта модель применяется в Эстонии с 2003 г. в геодезии и других отраслях науки и техники. Новые данные высокоточной нивеляции, новые глобальные модели геопотенциала, а также гравиметрические данные создают предпосылки для обновления модели геоида и оценки его точности. Модель основана на гравиметрическом геоиде. Модель геоида Эстонии была вычислена быстрым методом Фурье с использованием всех гравиметрических данных и созданием сети 3×3 км. После использования новых гравиметрических данных в геоиде не оказалось значительного превышения высот по сравнению с точками, измеренными методом GPS. Среднеквадратическая погрешность составила 2,7 см. Вычисленная модель геоида была соединена с системой высот по точкам GPSнивелирования. Благодаря новым данным по высокоточной нивеляции, полученным в 2008–2010 гг., значительно увеличилось количество точек GPSнивелирования и тем самым увеличилась точность геоида, так как невязки полигонов нивелирования составляют всего 2–3 мм. Оценив точность нового геоида Эстонии, выявлено среднеквадратическое отклонение в 1,2 см.

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Demirci, Umit B., and Philippe Miele. "Chemical hydrogen storage: ‘material’ gravimetric capacity versus‘system’ gravimetric capacity." Energy & Environmental Science 4, no. 9 (2011): 3334. http://dx.doi.org/10.1039/c1ee01612a.

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11

Kahn, J. R., and C. A. Wykoff. "Gravimetric flowmeter calibration." Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films 9, no. 2 (March 1991): 362–63. http://dx.doi.org/10.1116/1.577564.

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12

Sanogo, S., M. Sacande, and P. Van Damme. "Gravimetric sorting to improve germination of Anogeissus leiocarpa seed lots." Seed Science and Technology 43, no. 2 (August 1, 2015): 318–23. http://dx.doi.org/10.15258/sst.2015.43.2.20.

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13

Petroskevicius, Petras, Eimuntas Parseliunas, Rosita Birvydiene, Darius Popovas, Romuald Obuchovski, and Lina Papsiene. "Analiza kakovosti nacionalne gravimetrične mreže v Litvi." Geodetski vestnik 58, no. 04 (2014): 746–55. http://dx.doi.org/10.15292/geodetski-vestnik.2014.04.746-755.

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Teixeira, W. G., G. Schroth, J. D. Marques, and Bernd Huwe. "Sampling and TDR probe insertion in the determination of the volumetric soil water content." Revista Brasileira de Ciência do Solo 27, no. 4 (August 2003): 575–82. http://dx.doi.org/10.1590/s0100-06832003000400001.

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Volumetric soil water content (theta) can be evaluated in the field by direct or indirect methods. Among the direct, the gravimetric method is regarded as highly reliable and thus often preferred. Its main disadvantages are that sampling and laboratory procedures are labor intensive, and that the method is destructive, which makes resampling of a same point impossible. Recently, the time domain reflectometry (TDR) technique has become a widely used indirect, non-destructive method to evaluate theta. In this study, evaluations of the apparent dielectric number of soils (epsilon) and samplings for the gravimetrical determination of the volumetric soil water content (thetaGrav) were carried out at four sites of a Xanthic Ferralsol in Manaus - Brazil. With the obtained epsilon values, theta was estimated using empirical equations (thetaTDR), and compared with thetaGrav derived from disturbed and undisturbed samples. The main objective of this study was the comparison of thetaTDR estimates of horizontally as well as vertically inserted probes with the thetaGrav values determined by disturbed and undisturbed samples. Results showed that thetaTDR estimates of vertically inserted probes and the average of horizontally measured layers were only slightly and insignificantly different. However, significant differences were found between the thetaTDR estimates of different equations and between disturbed and undisturbed samples in the thetaGrav determinations. The use of the theoretical Knight et al. model, which permits an evaluation of the soil volume assessed by TDR probes, is also discussed. It was concluded that the TDR technique, when properly calibrated, permits in situ, nondestructive measurements of q in Xanthic Ferralsols of similar accuracy as the gravimetric method.

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Li, Y. C., and M. G. Sideris. "Improved Gravimetric Terrain Corrections." Geophysical Journal International 119, no. 3 (December 1994): 740–52. http://dx.doi.org/10.1111/j.1365-246x.1994.tb04013.x.

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Olsen, Adam P., Richard C. Flagan, and Julia A. Kornfield. "Scanning Activity Gravimetric Analysis." Macromolecules 39, no. 17 (August 2006): 5946–51. http://dx.doi.org/10.1021/ma061027r.

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17

Robens, E. "Early gravimetric adsorption measurements." Colloids and Surfaces A: Physicochemical and Engineering Aspects 104, no. 2-3 (November 1995): 375–76. http://dx.doi.org/10.1016/0927-7757(95)03320-6.

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18

Cunha, Ildenise B. S., and Celio Pasquini. "Automated gravimetric management of solutions. Part 1. High-performance microcomputer-controlled gravimetric burette." Analyst 117, no. 5 (1992): 905. http://dx.doi.org/10.1039/an9921700905.

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Gillies, G. T. "Gravimetrists in Action." Science 264, no. 5161 (May 13, 1994): 1001–2. http://dx.doi.org/10.1126/science.264.5161.1001.

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Taimazov, D. G. "Stringed vertical gravimetric gradient meter." Seismic Instruments 45, no. 1 (June 2009): 115–18. http://dx.doi.org/10.3103/s0747923909010204.

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Cheborin, O. G., and V. A. Yatsenko. "Cryogenic sensor for gravimetric devices." Kosmìčna nauka ì tehnologìâ 4, no. 5-6 (September 30, 1998): 129–40. http://dx.doi.org/10.15407/knit1998.05.129.

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Чепюк, Ларіна Олексіївна. "String gravimeter aviation gravimetric system." Technology audit and production reserves 6, no. 4(8) (December 13, 2012): 23–24. http://dx.doi.org/10.15587/2312-8372.2012.5640.

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Gilliland, J. R. "A gravimetric geoid of Australia." Australian Surveyor 34, no. 7 (September 1989): 699–706. http://dx.doi.org/10.1080/00050326.1989.10438602.

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Simonson, Larry A. "Tablet Analysis Using Gravimetric Dilutions." Journal of Chemical Education 78, no. 10 (October 2001): 1387. http://dx.doi.org/10.1021/ed078p1387.

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Conair Europe Limited. "Gravimetric blending meets processing needs." Plastics, Additives and Compounding 2, no. 11 (November 2000): 26–28. http://dx.doi.org/10.1016/s1464-391x(00)80094-x.

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Tejera-Garcia, Roberto, Lisa Connell, Walter A. Shaw, and Paavo K. J. Kinnunen. "Gravimetric determination of phospholipid concentration." Chemistry and Physics of Lipids 165, no. 6 (September 2012): 689–95. http://dx.doi.org/10.1016/j.chemphyslip.2012.06.005.

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Beltz, N., W. Jaeschke, and F. X. Meixner. "Gravimetric calibration of standard gases." Thermochimica Acta 103, no. 1 (July 1986): 57–62. http://dx.doi.org/10.1016/0040-6031(86)80012-0.

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Olliver, J. G. "The Gravimetric geoid of Tanzania." Survey Review 39, no. 305 (July 2007): 212–25. http://dx.doi.org/10.1179/003962607x165186.

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Cheong, Hin‐Fatt. "Gravimetric Statistics of Riprap Quarrystones." Journal of Waterway, Port, Coastal, and Ocean Engineering 111, no. 3 (May 1985): 589–93. http://dx.doi.org/10.1061/(asce)0733-950x(1985)111:3(589).

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Holstein, Horst, and Ben Ketteridge. "Gravimetric analysis of uniform polyhedra." GEOPHYSICS 61, no. 2 (March 1996): 357–64. http://dx.doi.org/10.1190/1.1443964.

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Analytical formulas for the gravity anomaly of a uniform polyhedral body are subject to numerical error that increases with distance from the target, while the anomaly decreases. This leads to a limited range of target distances in which the formulas are operational, beyond which the calculations are dominated by rounding error. We analyze the sources of error and propose a combination of numerical and analytical procedures that exhibit advantages over existing methods, namely (1) errors that diminish with distance, (2) enhanced operating range, and (3) algorithmic simplicity. The latter is achieved by avoiding the need to transform coordinates and the need to discriminate between projected observation points that lie inside, on, or outside a target facet boundary. Our error analysis is verified in computations based on a published code and on a code implementing our methods. The former requires a numerical precision of one part in [Formula: see text] (double precision) in problems of geophysical interest, whereas our code requires a precision of one part in [Formula: see text] (single precision) to give comparable results, typically in half the execution time.

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France, R. C., M. L. Cune, and C. P. P. Reid. "Gravimetric determination of ectomycorrhizal infection." Soil Biology and Biochemistry 17, no. 3 (January 1985): 381–82. http://dx.doi.org/10.1016/0038-0717(85)90077-x.

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Huang, Jianliang, and Marc Véronneau. "Canadian gravimetric geoid model 2010." Journal of Geodesy 87, no. 8 (June 12, 2013): 771–90. http://dx.doi.org/10.1007/s00190-013-0645-0.

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Robens, E., C. H. Massen, and J. J. Hardon. "Studies on historical gravimetric hygrometers." Thermochimica Acta 235, no. 1 (April 1994): 125–33. http://dx.doi.org/10.1016/0040-6031(94)80090-1.

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Hashim Fashir, Hassan. "The gravimetric geoid of Sudan." Journal of Geodynamics 14, no. 1-4 (January 1991): 19–36. http://dx.doi.org/10.1016/0264-3707(91)90005-y.

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Agrawal, Y. K., and R. D. Roshania. "Hydroxamic Acids in Gravimetric Analysis." Bulletin des Sociétés Chimiques Belges 89, no. 3 (September 1, 2010): 159–74. http://dx.doi.org/10.1002/bscb.19800890303.

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Robinson, T., B. Bronson, P. Gogolek, and P. Mehrani. "Sample preparation for thermo-gravimetric determination and thermo-gravimetric characterization of refuse derived fuel." Waste Management 48 (February 2016): 265–74. http://dx.doi.org/10.1016/j.wasman.2015.11.018.

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Plaumann, S. "Gravimetrie und magnetik." Geoexploration 24, no. 1 (July 1986): 81. http://dx.doi.org/10.1016/0016-7142(86)90021-9.

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DEME, I. "AVALIAÇÃO DA INCERTEZA DE MEDIÇÃO NA CALIBRAÇÃO DE MEDIDOR DE VAZÃO DE LÍQUIDOS PELO MÉTODO GRAVIMÉTRICO." Revista SODEBRAS 15, no. 174 (June 2020): 99–101. http://dx.doi.org/10.29367/issn.1809-3957.15.2020.174.99.

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Medved, Klemen, Oleg Odalović, and Božo Koler. "New Bouguer Anomaly Map for the Territory of the Slovenia." Remote Sensing 13, no. 22 (November 10, 2021): 4510. http://dx.doi.org/10.3390/rs13224510.

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The existing Bouguer anomaly map, which covers the territory of the Republic of Slovenia is a few decades old. Since then, quite a few new gravimetric measurements (data) for the territory of Slovenia as well as high quality digital terrain models that are needed for creating such a map have been made available. The methodology and standards for creating gravity anomaly maps are also changing. Thus, the national Bouguer anomaly map was updated. There were some gross errors detected in the set of old gravimetric data. Additionally, the influence of new updated gravimetric data was analyzed. The comparison of the various maps and the analysis of the influence of input gravimetric data indicates that the new gravimetric data of Slovenia has a significant influence on the creation of the gravimetric anomaly maps for Slovenia (even over 30 mGals at some points).

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Margosis, Michel, William Horwitz, and Richard Albert. "Performance Characteristics of Methods of Analysis Used for Regulatory Purposes. I. Drug Dosage Forms. F. Gravimetric and Titrimetric Methods." Journal of AOAC INTERNATIONAL 71, no. 3 (May 1, 1988): 619–35. http://dx.doi.org/10.1093/jaoac/71.3.619.

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Abstract The original gravimetric and titrimetric methods approved by AOAC for the analysis of pharmaceutical preparations, particularly during the period 1915-1950, show precision, recovery, and outlier parameters approximately the same as those exhibited by the previously reviewed instrumental methods that are currently used. Fifty-nine published collaborative studies utilized gravimetric methods and 85 used titrimetric. The studies of the gravimetric methods encompassed 47 analytes, 95 dosage forms, and 136 assays; the corresponding figures for the titrimetric studies are 72, 112, and 152. An average of approximately 7 laboratories participated per study. The line of best fit of the relative standard deviation between-laboratories (RSDR) plotted against the negative logarithm of the fractional concentration, C, extends from 1.2 and 1.0% for the gravimetric and titrimetric methods, respectively, at 100% concentration to 2.2 and 2.8% at 1.0% concentration. Below this concentration the precision of the titrimetric methods degenerates faster than that of the gravimetric methods. Above about 0.1% concentration the gravimetric and titrimetric methods are somewhat more precise than the instrumental methods in current use for drug analysis. The difference, however, is not statistically significant and the general equation, RSDR = 2 exp(l - 0.5 log C), is also applicable to gravimetric and titrimetric methods above a concentration level of about C = 0.001 (0.1%)

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Abreu, Mário A. de, Giuliano S. Marotta, Lavoisiane Ferreira, Denizar Blitzkow, Ana C. O. C. de Matos, and João Francisco Galera Monico. "ANALYSIS OF THE PRINCIPAL CONSTITUENTS OF SOLID EARTH TIDES ESTIMATED WITH GRAVIMETRIC AND GNSS DATA IN MANAUS AND BRASÍLIA." Brazilian Journal of Geophysics 37, no. 1 (March 27, 2019): 11. http://dx.doi.org/10.22564/rbgf.v37i1.1986.

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ABSTRACT. Solid Earth tide is the periodic displacement due to the tidal force. This effect is present in all geodesic and geophysical observations and should be eliminated when high accuracy surveying is required. It is necessary to determine the amplitudes and phases of the harmonic constituents to estimate the terrestrial tide effect magnitude. This article presents a methodology for estimating and analyzing the amplitudes and phases of the solid Earth tide principal constituents from gravimetric/GNSS observations. The methodology was applied to data collected in the Manaus/AM and Brasília/DF stations, Brazil, to determine the amplitude and phase values for the long period, monthly, diurnal and semidiurnal constituents, besides determining the time required for the convergence of the estimated constituent values. The estimated amplitude and phase values, using gravimetric data, converged between the 2nd and 6th months of the time series. For the positioning observations, the constituents values converged between the 2nd and 17th month of the data series, except for the long period constituent, which requires a longer time series to obtain satisfactory values for both methods. The results show that the solid Earth tide constituents were better estimated by the gravimetric data compared to the positioning data considering the series analyzed.Keywords: gravimetry, GNSS, solid Earth tide, tidal constituents.RESUMO. Maré terrestre é o deslocamento periódico decorrente da força de maré. Este é um efeito que deve ser eliminado quando se deseja realizar levantamentos nos quais é necessária alta acurácia tanto em observações geodésicas quanto geofísicas. Para estimar o efeito de maré terrestre deve-se determinar as amplitudes e fases de suas componentes harmônicas. Este artigo apresenta uma metodologia para a estimativa das amplitudes e fases das principais componentes de maré terrestre, a partir de observações gravimétricas/GNSS. A metodologia foi aplicada a dados coletados em estações instaladas em Manaus/AM e Brasília/DF, Brasil, resultando na determinação dos valores de amplitude e fase para componentes de longo período, mensais, diurnas e semidiurnas, além da análise da convergência dos valores estimados para estas componentes. As amplitudes e fases calculadas, utilizando dados gravimétricos, convergiram entre o 2_ e o 6_ mês analisados, enquanto para os dados de posicionamento a convergência ocorreu entre o 2_ e o 17_ mês observado, com exceção da componente de longo período, que não pôde ser determinada em ambos os métodos. Para o período analisado, as componentes de maré terrestre foram melhor estimadas utilizando dados gravimétricos, se comparadas aos resultados obtidos com dados de posicionamento.Palavras-chave: gravimetria, GNSS, maré terrestre, componentes de maré.

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Bulyarskiy, S. V., A. V. Lakalin, and E. V. Latipov. "Thermo Gravimetric Analysis of Carbon Nanotube." Nano- i mikrosistemnaya tehnika 22, no. 4 (April 22, 2020): 185–90. http://dx.doi.org/10.17587/nmst.22.185-190.

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43

Bezvesilnaya, E., A. G. Tkachuk, L. Chepyuk, and K. S. Kozko. "Modern gravimeters of aviation gravimetric system." Geofizicheskiy Zhurnal 37, no. 2 (October 3, 2017): 86–94. http://dx.doi.org/10.24028/gzh.0203-3100.v37i2.2015.111309.

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Haq, Z. U., A. K. Khattak, Z. Khan, F. U. Khan, A. Ather, and S. U. Khan. "Thermal gravimetric analysis of fiber glass." Asian Journal of Research in Chemistry 9, no. 1 (2016): 22. http://dx.doi.org/10.5958/0974-4150.2016.00004.3.

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Miyazawa, M., M. A. Pavan, E. L. de Oliveira, M. Ionashiro, and A. K. Silva. "Gravimetric determination of soil organic matter." Brazilian Archives of Biology and Technology 43, no. 5 (2000): 475–78. http://dx.doi.org/10.1590/s1516-89132000000500005.

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Studies were carried out to evaluate a gravimetric method for the determination of soil organic matter by the mass loss at 300ºC. The gravimetric method was compared with Walkley-Black, using several brazilian soils with variable chemical and physical properties. Gravimetric method was positively correlated with Walkley-Black method with the following linear regression equation: y = 3.72x + 0.29, r = 0.94. The angular coefficient 3.72 for tropical soils was greater than those reported in the literature for temperate soils (from 1.68 to 2.13). The difference was due to greater oxidation degree of the organic matter. When compared with Walkley-Black method, gravimetric technique showed certain distinct advantages such as no environmental contamination with Cr6+ and improved laboratory safety eliminating the use of concentrated sulfuric acid.

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Tereshchenko, A. G. "Hygroscopic gravimetric quantitative chemical analysis. Review." Аналитика и контроль 20, no. 2 (2016): 110–20. http://dx.doi.org/10.15826/analitika.2016.20.2.001.

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47

Nechitaĭlov, A. A., E. V. Astrova, Yu A. Kukushkina, and S. Yu Kameneva. "Oxidative-gravimetric porosimetry of macroporous silicon." Semiconductors 40, no. 10 (October 2006): 1222–26. http://dx.doi.org/10.1134/s1063782606100174.

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48

Posligua, Paola, Michelle Peñaherrera, Elvito Villegas, and Carlos Banchon. "Gravimetric Evolution During Sewage Sludge Biostabilization." Journal of Ecological Engineering 19, no. 5 (September 1, 2018): 76–85. http://dx.doi.org/10.12911/22998993/91272.

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Llubes, M., and P. Mazzega. "The ocean tide gravimetric loading reconsidered." Geophysical Research Letters 23, no. 12 (June 1, 1996): 1481–84. http://dx.doi.org/10.1029/96gl01262.

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Gachari, M. K., and J. G. Olliver. "THE DETAILED GRAVIMETRIC GEOID OF KENYA." Survey Review 28, no. 221 (July 1986): 365–71. http://dx.doi.org/10.1179/sre.1986.28.221.365.

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