Relevant bibliographies by topics / Rf value

Contents

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

Academic literature on the topic 'Rf value'

Author: Grafiati
Published: 3 June 2025
Last updated: 31 July 2025

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Journal articles on the topic "Rf value"

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Spasovski, Dejan, Todor Gruev, Nada Marina, et al. "The Diagnostic Value of the Second Generation Anti-CCP Test in Rheumatoid Arthritis." Journal of Medical Biochemistry 27, no. 1 (2008): 52–58. http://dx.doi.org/10.2478/v10011-007-0043-3.

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The Diagnostic Value of the Second Generation Anti-CCP Test in Rheumatoid ArthritisThe purpose of this research was to compare the diagnostic values of laboratory variables, to present quantitative evaluations of the diagnostic test with reference to sensitivity, and specificity, the predictive value of the positive and negative test and precision of the test for anti-cyclic citrullinated peptide (anti-CCP 2) antibodies, rheumatoid factor (RF), C-reactive protein (CRP), DAS 28 index, in early diagnosis of untreated rheumatoid arthritis (RA). Using the ELISA technology of DIA-STAT™Anti-CCP (Axi
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Mandalapu, Venkateswara Rao, and Venkaiah Yanamala. "Quantitative Estimation and Identification of Phospholipids in Gill, Liver, Intestine, Muscle, Brain Tissue of Fresh Water Fish Channa Punctatus (Bloch) in Thin Layer Chromatography (TLC) Sprayed with Dittmer –Lester Reagent." UTTAR PRADESH JOURNAL OF ZOOLOGY 45, no. 18 (2024): 727–35. http://dx.doi.org/10.56557/upjoz/2024/v45i184490.

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Phosphoipids were quantified and observed in different tissues i.e. gill, liver, intestine, muscle and brain tissue of fresh water fish Channa punctatus through Thin Layer Chromatography (TLC). Gill, liver, intestine, muscle and brain tissues of Channa punctatus punctatus dissected and homogenated in chloroform and methanol mixture (2:1 ratio) and centrifuged. The supernatant homogenate was used for the experiment. The sample tissue is loaded in TLC plate and dipped in a beaker which consists of mixture of chloroform and methanol (2:1 ratio) that works as mobile phase. TLC is a sheet of alumin
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Spasovski, Dejan, Todor Gruev, Nada Marina та ін. "The Diagnostic Value of N-Acetyl-β-D-Glucosaminidase and Microalbumin Concentrations in Rheumatoid Arthritis". Journal of Medical Biochemistry 26, № 4 (2007): 300–308. http://dx.doi.org/10.2478/v10011-007-0038-0.

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The Diagnostic Value of N-Acetyl-β-D-Glucosaminidase and Microalbumin Concentrations in Rheumatoid ArthritisThe purpose of this research was to compare the diagnostic values of laboratory variables, to present quantitative evaluations of the diagnostic sifted test with reference to sensitivity and specificity, the predictive value of the positive and negative test and precision of the test for N-acetyl-β-D-glucosa-minidase (NAG), microalbumin, rheumatoid factor (RF), Creactive protein (CRP), DAS 28 index, in early diagnosis of untreated rheumatoid arthritis (RA), and to define the effect of un
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Suthar, Manju, and Praveen Aggarwal. "Modeling CBR Value using RF and M5P Techniques." MENDEL 25, no. 1 (2019): 73–78. http://dx.doi.org/10.13164/mendel.2019.1.073.

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Two modeling techniques namely (i) Random forest (RF) and (ii) M5P model tree are used to model, soaked California bearing ratio (CBR) value of thermal power plant generated stabilized pond ash. Pond ash was stabilized with the help of commercially available lime and industrial waste lime sludge. CBR data generated from exhaustive experimental programme was used in the study. Variations in doses of stabilizer i.e. lime (L) and lime sludge (LS), curing duration (CP) and proctor test results density (MDD) & moisture (OMC) are considered as input variables. Experimentally observed CBR value w
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Anik Eko Novitasari, Lailatul Fitriyah, and Rosidah Rosidah. "Variasi Konsentrasi Fase Gerak pada Analisis Hidrokuinon dalam Sabun Pemutih dengan Metode Kromatografi Kertas." OBAT: Jurnal Riset Ilmu Farmasi dan Kesehatan 2, no. 4 (2024): 346–55. http://dx.doi.org/10.61132/obat.v2i4.637.

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Hydroquinone is a compound that is often used in skin whitening beauty products. According to BPOM 2007, the use of hydroquinone at levels above 2% can cause skin disorders, namely hyperpigmentation which can lead to skin cancer. This research was conducted to qualitatively analyze the hydroquinone compound found in skin whitening soap which does not have a BPOM number. The aim of this research is to determine the presence of hydroquinone compounds contained in skin whitening soap samples and to determine the differences in Rf values ​​resulting from the comparison of the concentrations of the
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Mandayatma, Eka. "OPTIMALISASI RESISTANSI FEEDBACK DAN RESISTANSI INPUT PADA PENGUAT INVERTING UNTUK PENGKONDISI SINYAL." JURNAL ELTEK 17, no. 1 (2019): 44. http://dx.doi.org/10.33795/eltek.v17i1.131.

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Penguatan rangkaian penguat inverting dengan Op Amp ditentukan oleh nilai Resistansi Feedback (Rf) dan Resistansi Input (Rin) dimana penguatan merupakan perbandingan antara Rf dan Rin. Biasanya salah satu nilai (Rf atau Rin) diambil secara bebas. Secara teoritis formula tersebut memperbolehkan memberikan nilai Rf dan Rin berapapun asalkan memenuhi syarat kebutuhan penguatan (Av). Penentuan nilai yang bebas (berapapun) ini sering membingungkan karena secara teori semua nilai bisa diterapkan namun secara praktik dilapangan tidak semua nilai bisa memberikan hasil yang diharapkan. Untuk menghilang
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Bai, Jianjun, Wenjing Zhou, Haixiang Wang, et al. "Value of stereoelectroencephalography (SEEG)-guided radiofrequency thermocoagulation in treating drug-resistant focal epilepsy." Brain Science Advances 5, no. 3 (2019): 189–202. http://dx.doi.org/10.26599/bsa.2019.9050015.

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Stereoelectroencephalography (SEEG) has been widely used in the presurgical evaluation of patients with medically intractable epilepsy. In the past, SEEG was commonly used as a method for mapping and localizing the epileptogenic zone (EZ). Since 2004, several studies have been conducted to examine the effectiveness of SEEG-guided radiofrequency thermocoagulation (RF-TC) in treating refractory epilepsy. However, the seizure-free and responder rates varied greatly across studies. We aimed to analyze the outcome of 56 patients who were treated with SEEG-guided RF-TC to evaluate the effectiveness
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Mosy, Furijika Fitriana, and Kuswandani Kuswandani. "Identifikasi Senyawa Jamu Pegal Linu yang Beredar di Kabupaten Bantul dengan Metode Kromatografi Lapis Tipis." Surya Medika: Jurnal Ilmiah Ilmu Keperawatan dan Ilmu Kesehatan Masyarakat 14, no. 2 (2019): 80. http://dx.doi.org/10.32504/sm.v14i2.129.

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Background: Traditional herbal is not permitted to contain chemicals drug. It is possible allowed such as paracetamol and phenylbutazone.Objective: This study is aimed to identify the compounds of paracetamol and phenylbutazone in the traditional herbal of Jamu Pegal Linu (Herbal Medicine).Methods: This type of research was descriptive and the sample was determined by random sampling. The method used Thin Layer Chromatography (TLC) which is a physicochemical method. There were eight samples were extracted by the soxhletation method until a thick extract was obtained to be spotted in the quite
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Kulkarni, Dr Santosh. "PHARMACEUTICO ANALYTICAL STUDY OF SINDHURADYA TAILA." Avishkara 01, no. 01 (2022): 06–09. http://dx.doi.org/10.56804/avishkara.2022.1103.

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Background: Sindhuradya taila is a preparation mentioned in Kushta chikitsadhikara by Chakradatta as well as Bhaishajya Ratnavali. It is specifically claimed to be effective in Pama in the form of external application. Sindhuradya taila is a unique formulation with only two ingredients namely Sindhoora and Jeeraka. Aims & Objectives: In present study an attempt was taken to assess the quality of sindhuradyaTaila Study Setting: ACRL SJGAMC&H Koppal, It includes Organoleptic parameters (colour, smell, appearance, taste) and physico chemical parameters (specific gravity, saponification va
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Damjanovska, Ljubinka, Violeta Atanasovska, and Todor Gruev. "The Diagnostic Value of Anti-Cyclic Citrullinated Peptide Antibodies (anti-CCP) in Patients with Rheumatoid Arthritis." Journal of Medical Biochemistry 26, no. 4 (2007): 285–88. http://dx.doi.org/10.2478/v10011-007-0035-3.

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The Diagnostic Value of Anti-Cyclic Citrullinated Peptide Antibodies (anti-CCP) in Patients with Rheumatoid ArthritisA cross-sectional study was carried out to analyze the prevalence of anti-CCP antibodies and IgM RF in the sera of 160 randomly selected patients from the Rheumatology Department: 60 with RA, 50 with other rheumatic diseases (non-RA), 50 healthy controls (HC). The mean age of the group was 50.06+/-11.9 years. There were 141 females (88.1%) and 19 males (11.9%). RA patients fulfilled the revised ACR criteria. The mean duration of the disease was 82.4 months. Anti-CCP ELISA kit an
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Dissertations / Theses on the topic "Rf value"

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Yousif, Shather, and Amir Douglah. "Hur skall en ishallsvägg byggas? : Fuktrisker och mögelanalys." Thesis, KTH, Byggteknik och design, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-213441.

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In Sweden there are many ice halls and ice halls climate differ from the usual buildings' climate, because temperatures are lower indoors than outdoors during the summer months. This results in a higher vapor content outdoors compared with indoors during the course of the year. Moisture transport takes place from the outside towards the ice halls, which is contrary to what happens in a common building. During the critical period, the vapor transport direction is inward. When the hot air hits the cold surface of the wall structure, it leads to a risk of condensation in the wall that leads to mo
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Lehnertz, Monique. "Alltagsgeographien bildender Künstler in Berlin." Doctoral thesis, Humboldt-Universität zu Berlin, 2018. http://dx.doi.org/10.18452/19145.

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Die vorliegende Arbeit beschäftigt sich mit dem kreativen Akteur "bildender Künstler" und seiner Raumprägung im Wertschöpfungsprozess künstlerischer Innovationen am Beispiel der Kunstmetropole Berlin. Dabei wird der Fokus auf die alltäglichen Interaktionsräume der Akteure - sogenannte Alltagsgeographien - im Wertschöpfungsprozess gelegt. Durch die qualitative Untersuchung des Einzelakteurs und insbesondere seiner lokalen Praktiken werden differenzierte Informationen über die Charakteristika des kreativen Akteurs, über die Kunstbranche und die globalen Dynamiken dieser Branchen gewonnen. Ziel
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Jeronimo, Joice Luiz. "Modelagem de maquinas de solda por indução eletromagnetica em RF." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/259169.

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Orientador: Hugo Enrique Hernandez Figueroa<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação<br>Made available in DSpace on 2018-08-13T12:10:33Z (GMT). No. of bitstreams: 1 Jeronimo_JoiceLuiz_M.pdf: 4749050 bytes, checksum: f44d530638f8a8121e171afc306321ff (MD5) Previous issue date: 2009<br>Resumo: Este trabalho trata do estudo de máquinas industriais de solda por indução eletromagnética na faixa de Rádio Freqüência (RF), visando modelos robustos baseados em circuitos de parâmetros concentrados. Tipicamente as máquinas industriai
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Yu, Jia-Cong, and 余佳璁. "Dynamically Monitoring and Compensating the Thickness of Film using Turning Point Value Analysis－The Preliminary Simulation of Uniformity of Large-Area Ta2O5 Thin Film Deposited by RF Magnetron Sputtering." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/07958095493905949383.

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碩士<br>輔仁大學<br>物理學系<br>96<br>The thickness of film has to reach the specific degree of uniformity, because it effects optical characteristic directly by itself. However, the bigger size of the substrate is, the harder demand of uniformity reach. The thesis mainly concerns the situation of the uniformity in the thickness of Ta2O5 film being deposited on the circular substrate whose diameter is 180mm. The research method is to set up Dynamical Monitoring which optical monitors with turning point value analysis on RF magnetron sputtering coater. The major findings were as follow: (1)The fineness
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Chen, Chin-Feng, and 陳璟鋒. "Predictions of Healing Period & Possible Final RF Values Using Initial RF Values：in Vivo & in Vitro." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/97072074639953582390.

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碩士<br>臺北醫學大學<br>口腔復健醫學研究所<br>91<br>In the past thirty years, there were numerous studies published on the stability of dental implant during osseointegration, but there have been still no valid and effective devices yet for dentists to determine the appropriate timing for prosthodontic loading of implants. Recently, implant stability assessment with resonance frequency (RF) has been discussed by numerous studies. However, due to the limit space of oral cavity, the traditional harmonic response method is not suitable for intra-oral practice. Therefore, in the present study, a novel device based
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Bassoo, Vandana. "A digital up-conversion architecture for future high efficiency wireless base stations." Thesis, 2010. https://vuir.vu.edu.au/16051/.

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Over the past few years, there has been a growing need for wireless communications with higher data rates and ubiquitous coverage, and these must be achieved at reduced cost and with a lower carbon footprint. This evolution in wireless demand places a big burden on transmitter architectures. The need for higher efficiency has stimulated research into the potential replacement of current linear power amplifiers (PAs) by switch mode power amplifiers (SMPAs) at cellular frequencies. The radio frequency (RF) PA currently accounts for a significant part of the cost, and most of the power requirem
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Books on the topic "Rf value"

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Ustundag, Alp. The Value of RFID: Benefits vs. Costs. Springer London, 2013.

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Uckelmann, Dieter. Quantifying the Value of RFID and the EPCglobal Architecture Framework in Logistics. Springer Berlin Heidelberg, 2012.

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Ermakov, V. V. Nalog na dobavlennui︠u︡ stoimostʹ, akt︠s︡izy: Kommentariĭ (postateĭnyĭ) k glavam 21 i 22 NK RF : v redakt︠s︡ii Federalʹnykh zakonov ot 07.07.2003 no. 117-FZ i ot 08.12.2003 no. 163-FZ : s primerami zapolnenii︠a︡ schetov-faktur, nalogovykh deklarat︠s︡iĭ i bukhgalterskimi provodkami. Status-Kvo 97, 2004.

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Centre, Bhabha Atomic Research, ed. Development of a state-of-the-art R.F. sputtering coating system for the fabrication of multilayer x-ray mirrors. Bhabha Atomic Research Centre, 2000.

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Nasyrov, R. V. Chelovek kak samot︠s︡ennostʹ: O formulirovke statʹi 2 Konstitut︠s︡ii RF 1993 g. : kurs lekt︠s︡iĭ. I︠U︡rlitinform, 2011.

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C, Moffat Anthony, International Association of Forensic Toxicologists. Committee for Systematic Toxicological Analysis., and Deutsche Forschungsgemeinschaft, eds. Thin-layer chromatographic Rf values of toxicologically relevant substances on standardized systems. VCH, 1987.

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A, De Zeeuw R., Deutsche Forschungsgemeinschaft, and International Association of Forensic Toxicologists. Committee for Systematic Toxicological Analysis., eds. Thin-layer chromatographic Rf values of toxicologically relevant substances on standardized systems. 2nd ed. VCH, 1992.

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Zeeuw, Rokus A. de. Thin-layer chromatographic Rf Values of toxicologically relevant substances on standardized systems: Report XVII of the DFG Commission for Clinical-Toxicological Analysis. 2nd ed. VCH, 1992.

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Ustundag, Alp. The Value of RFID: Benefits vs. Costs. Springer, 2012.

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Ustundag, Alp. The Value of RFID: Benefits vs. Costs. Springer, 2014.

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Book chapters on the topic "Rf value"

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Pereira, Pedro, Fernando V. Coito, and Helena Fino. "PSO-Based Design of RF Integrated Inductor." In Technological Innovation for Value Creation. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-28255-3_52.

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Ahtikoski, Anssi, Peichen Gong, Per Kr Rørstad, Esa-Jussi Viitala, and Jaakko Repola. "Financial Performance." In Managing Forest Ecosystems. Springer Nature Switzerland, 2024. https://doi.org/10.1007/978-3-031-70484-0_8.

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Abstract Financial comparisons between rotation forestry (RF) and continuous cover forestry (CCF) are based on simulations in which the growth and yield of trees is estimated using a growth simulator. These often include an optimisation tool to present the maximum value of the objective function (usually the present value of net income). Studies have shown that the profitability of CCF depends on the initial state of a stand, especially the diameter distribution of the trees. The effect of interest discount rate also depends on the initial state. As a rule, it is safe to say that the more the
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Wang, Yaning, Desheng Wei, Lei Zhai, Huilai Qin, Zheng Chen, and Yuxuan Zhu. "Experimental Study on Parameters of Hardening Soil Model with Small Strain Stiffness for Muddy Silty Clay and Silty Sandy Soil in Yangtze Floodplain Area." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-4355-1_1.

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AbstractTo obtain test parameters for the hardening soil model with small strain stiffness (HSS) of the muddy silty clay and silty sandy soil in the Nanjing Yangtze River floodplain, the following tests were conducted: consolidation test, consolidated-drained triaxial test, triaxial loading and unloading test, resonant column test and other common geotechnical tests. These test parameters included reference tangent modulus Eoedref, reference secant modulus E50ref, reference unloading and reloading modulus Eurref, failure ratio Rf, etc. A standardized process for determining HSS model parameter
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Xin, Cun, Dangfeng Yang, Xiaodong Liu, Yong Huang, and Xueming Qian. "Research on Dam Crack Identification Method Based on Multi-source Information Fusion." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-9184-2_1.

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AbstractCracks as the main safety concern of dams, high-precision identification of dam cracks is of great application value and scientific significance to ensure the safety of dams. The paper proposes a dam crack identification method based on multi-source information fusion. Specifically, image gray scale and geometric features are extracted based on the image information. And then a single crack identification model based on Support Vector Machine (SVM), Decision Tree (DT), Random Forest (RF), XGBoost, and BP Neural Network are established based on the features, respectively. Finally, a mul
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Sahabni, Sabrine, Rachid Toujani, Nabiha Ben M’Barek, et al. "Effect of Climate Change and anthropogenic pressures on the European eel Anguilla anguilla from RAMSAR Wetland Ichkeul Lake: prediction from the Random Forest model." In Ninth International Symposium “Monitoring of Mediterranean Coastal Areas: Problems and Measurement Techniques”. Firenze University Press, 2022. http://dx.doi.org/10.36253/979-12-215-0030-1.72.

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This study aims to assess the trophic level of Lake Ichkeul and predict the effect of climate change and anthropogenic pressures on European eel using the trophic index TRIX and the Random Forest RF model. The TRIX values show the poor water quality of the lake. While the RF model shows that eel landing depends on water level, turbidity, and salinity. The RF model gave an R2 =58.4% &gt; R2 =40.3% from Multiple linear regression, confirming the high performance of the RF model. The combination of the two models is an appropriate approach to be used in decision making by civil authorities.
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Azzopardi, Joel. "AI and Machine Learning to extend Meteo-Marine Station Observations into the Future." In Monitoring of Mediterranean Coastal Areas: Problems and Measurement Techniques. Firenze University Press, 2024. https://doi.org/10.36253/979-12-215-0556-6.73.

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The real-time availability of data from coastal meteo-marine stations is crucial for various stakeholders, including port authorities, government agencies, researchers, and the general public. While observation data is fundamental, short-term forecasts can significantly enhance planning and decision-making processes. This study explores the application of Machine Learning (ML) techniques to predict hourly values of air temperature, wind speed, atmospheric pressure, and humidity for the next 24 hours. We evaluate three ML models: Long Short-Term Memory Network (LSTM), Random Forest (RF), and Mu
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Tuulentie, Seija, Therese Bjärstig, Inger Hansen, et al. "Multiple Use of Forests." In Managing Forest Ecosystems. Springer Nature Switzerland, 2024. https://doi.org/10.1007/978-3-031-70484-0_10.

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Abstract Sustainable forest management approaches, regardless of whether they involve continuous cover forestry (CCF) or rotation forestry (RF), require a holistic landscape perspective that acknowledges the multiple interests, values, and uses that depend on the locally relevant economic, ecological, and socio-cultural circumstances. These must be considered alongside the use of forests and forest landscapes as a resource for rural development. Forests provide a wide range of goods and services. Those addressed here (i.e. tourism, recreation, health, grazing, non-timber forest products, and s
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"Rf Value." In Encyclopedia of Genetics, Genomics, Proteomics and Informatics. Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6754-9_14568.

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Beker, Benjamin, George Cokkinides, and Myung Jin Kong. "Boundary-Value Problems." In Encyclopedia of RF and Microwave Engineering. John Wiley & Sons, Inc., 2005. http://dx.doi.org/10.1002/0471654507.eme038.

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Agrawal, Pankaj, Akhilesh Tiwari, and Uday Pratap Singh. "An Innovative Design of RF Energy Harvester for Wireless Sensor Devices." In Advances in Computer and Electrical Engineering. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-3531-7.ch015.

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Due to growing demand of energy, green technologies are highly attractive among researchers because of their non-conventional nature. Energy harvesting is one of their best parts. Very low cost of maintenance and non-polluting nature are major reasons behind their growing demand. However, for ultra-low power applications, such as in wireless sensor devices, the energy scavenging from RF signal is another alternative. In the last few years, a great interest has been seen in microwave power scavenging for charging wireless devices. This chapter presents a RF energy harvesting circuit with tuned
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Conference papers on the topic "Rf value"

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Chen, C.-T., and B. S. Skerry. "Assessing the Corrosion Resistance of Painted Steel by the Application of AC Impedance and Electrochemical Noise Techniques." In CORROSION 1991. NACE International, 1991. https://doi.org/10.5006/c1991-91413.

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Abstract Four organic coatings of commercial grade (polyurethane, epoxy-polyamide, medium quality and low cost alkyds) with an expected range of corrosion protective properties were applied to steel substrates and immersed for up to 4,300 hours in 0.6 M NaCl solution. These painted electrodes were assessed by AC impedance in the frequency range 60 kHz - 0.1/0.01 Hz and also by a statistical analysis of the voltage and current noise transients generated under freely corroding conditions. Good corrosion resistance coatings were associated with stable paint film AC resistance (Rf) values and deri
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Ji, Yanning, Elena Dubrova, and Ruize Wang. "Is Your Chip Leaking Secrets via RF Signals?" In 2025 IEEE 55th International Symposium on Multiple-Valued Logic (ISMVL). IEEE, 2025. https://doi.org/10.1109/ismvl64713.2025.00035.

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Rosine, Germanicus, and El-Hassani Othman. "Machine Learning for Predicting DataCube Atomic Force Microscope (AFM)—MultiDAT-AFM." In ISTFA 2024. ASM International, 2024. http://dx.doi.org/10.31399/asm.cp.istfa2024p0351.

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Abstract In nanoscience, techniques based on Atomic Force Microscope (AFM) stand as a cornerstone for exploring local electrical, electrochemical and magnetic properties of microelectronic devices at the nanoscale. As AFM's capabilities evolve, so do the challenges of data analysis. With the aim of developing a prediction model for AFM mappings, based on Machine Learning, this work presents a step towards the analysis and benefit of Big Data recorded in the hyperspectral modes: AFM DataCube. The MultiDAT-AFM solution is an advanced 2000-line Python-based tool designed to tackle the complexitie
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Cheng, Jung-Fu Thomas, Atieh R. Khamesi, and Yufei Blankenship. "Complex-Valued Neural Networks for Distributed Machine Learning Assisted RF Positioning." In MILCOM 2024 - 2024 IEEE Military Communications Conference (MILCOM). IEEE, 2024. https://doi.org/10.1109/milcom61039.2024.10773773.

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Esa, Mazlina, Rozeha A. Rashid, Razimah Abdullah, and Mohd Saidfudin Masodi. "Value-adding through Internal Audits: A Continuous Improvement Process in Microwave Engineering Education." In 2006 International RF and Microwave Conference. IEEE, 2006. http://dx.doi.org/10.1109/rfm.2006.331097.

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Jamaludin, Izzuddin, Zhao Zheng Tan, Nicholas Aloysius Surin, and Zhong Ying Hew. "Improving Aging Field Value Through Production Data Revitalization." In Offshore Technology Conference Asia. OTC, 2022. http://dx.doi.org/10.4043/31524-ms.

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Abstract Field-D consists of multi-stacked oil reservoirs with commingle production and dual strings. Well integrity issues are main challenges causing crossflow between zones and unintentional production/injection. With massive effort of rebuilding static model and rework on history matching (HM), many inconsistencies of production data allocation were discovered, such as oil recovery factor (RF) &amp;gt;60%. This paper discusses the exercise of cleaning up production data as per latest subsurface understanding and memory production logging tool (MPLT) campaigns. Reinterpretation of stratigra
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Ab Razak, Norsyuhada, Normawani Kerya, May Sari Hendrawati, et al. "Strategic Value Framing for Brownfield Redevelopment." In International Petroleum Technology Conference. IPTC, 2021. http://dx.doi.org/10.2523/iptc-21863-ms.

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Abstract Objectives/Scope Field A is a brownfield that has been produced for 52 years under natural depletion via a total of 207 strings. The field comprises 7000 ft of reservoir section, multiple fault blocks and over 200 separate reservoir units has been produced to date. Despite the long period of production, the field recovery factor (RF) to date is only 29%. To improve the RF, a strategic assest value framing exercise was carried out to identify the additional subsurface opportunities i.e. infill well drilling, secondary recovery, late field life appraisal in underdeveloped fault blocks a
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Shibata, T., K. Shinto, A. Takagi, et al. "Observation of plasma density oscillation with doubled value of RF frequency in J-PARC RF ion source." In Proceedings of the 17th International Conference on Ion Sources. Author(s), 2018. http://dx.doi.org/10.1063/1.5053250.

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Jaramillo, Juan Fernando Garlindo, Antonio Carlos Zambon, and Pedro Fernandes de Anunciação. "Identification of stakeholders for public value detection in public sector initiatives." In 13th CONTECSI International Conference on Information Systems and Technology Management. TECSI, 2016. http://dx.doi.org/10.5748/9788599693124-13contecsi/rf-3975.

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Macohon, Edson Roberto, Nádia Nara de Godoy, Vitor Paulo Rigo, and Roberto Carlos Klann. "DISCLOSURE OF LIABILITIES AT FAIR VALUE SECTOR ENTERPRISES CONSTRUCTION OF BM&FBOVESPA." In 10th CONTECSI International Conference on Information Systems and Technology Management. TECSI, 2013. http://dx.doi.org/10.5748/9788599693094-10contecsi/rf-67.

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Reports on the topic "Rf value"

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Roldán-Ferrín, Felipe, and Julián A. Parra-Polania. ENHANCING INFLATION NOWCASTING WITH ONLINE SEARCH DATA: A RANDOM FOREST APPLICATION FOR COLOMBIA. Banco de la República, 2025. https://doi.org/10.32468/be.1318.

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This paper evaluates the predictive capacity of a machine learning model based on Random Forests (RF), combined with Google Trends (GT) data, for nowcasting monthly inflation in Colombia. The proposed RF-GT model is trained using historical inflation data, macroeconomic indicators, and internet search activity. After optimizing the model’s hyperparameters through time series cross-validation, we assess its out-of-sample performance over the period 2023–2024. The results are benchmarked against traditional approaches, including SARIMA, Ridge, and Lasso regressions, as well as professional forec
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ภุมมางกูร, สุนิพนธ์, ราณี สุรกาญจน์กุล та ลาวัลย์ ศรีพงษ์. การตรวจสอบเภสัชภัณฑ์โดยใช้ฟลูโอเรสคามีน : รายงานผลการวิจัย. จุฬาลงกรณ์มหาวิทยาลัย, 1989. https://doi.org/10.58837/chula.res.1989.10.

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การใช้ fluorescamine เป็น spraying reagent พ่นบน plate ที่เคลือบด้วย silica gel GF 254 สามารถใช้ตรวจสอบยาที่มีหมู่ฟังก์ชัน –NH2, -NH, และ –N- ได้ พบว่ายาที่เป็น primary amine จะเกิด fluorescence กับ fluorescamine แต่ยาที่เป็น secondary amine จะเกิด quenching ส่วนที่เป็น tertiary amine หรือ quarternary amine จะไม่เกิดอะไรกับ fluorescamine โดยอาศัยผลการทดลองอันนี้จะทำให้สามารถแบ่งยาเป็น 3 กลุ่ม คือกลุ่มที่ 1 เป็นยาที่เกิด fluorescence กับ fluorescamine กลุ่มที่ 2 เกิด quenching และกลุ่มที่ 3 ไม่เกิด fluorescence หรือ quenching กับ fluorescamine โดยอาศัยการแบ่งยาเป็นสามกลุ่มและการใช้ข้อมูลจาก Rf
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Weinberg, Zwi G., Richard E. Muck, Nathan Gollop, Gilad Ashbell, Paul J. Weimer, and Limin Kung, Jr. effect of lactic acid bacteria silage inoculants on the ruminal ecosystem, fiber digestibility and animal performance. United States Department of Agriculture, 2003. http://dx.doi.org/10.32747/2003.7587222.bard.

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The overall objective of the whole research was to elucidate the mechanisms by which LAB silage inoculants enhance ruminant performance. The results generated will permit the development of better silage inoculants that maximize both silage preservation and animal performance. For this one-year BARD feasibility study, the objectives were to: 1. determine whether lactic acid bacteria (LAB) used in inoculants for silage can survive in rumen fluid (RF) 2.select the inoculants that survived best, and 3. test whether LAB silage inoculants produce bacteriocins-like substances. The most promising str
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Song, J. J. RF characteristics of the APS storage ring isolation valve. Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/87851.

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Weller, Michael, and D. Welch. Modeling Fast-Valve in Chicago to Check for RF Oscillations and Beam Degradation. Office of Scientific and Technical Information (OSTI), 2022. http://dx.doi.org/10.2172/1844119.

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Dippold, Marcel, Makrina A. Chairopoulou, Maximilian Drexler,, Michael Scheiber, and Holger Ruckdäschel. From vibrating molecules to a running shoe: connecting dielectric properties with process feedback in radio-frequency welding of TPU bead foams. Universidad de los Andes, 2024. https://doi.org/10.51573/andes.pps39.gs.pfm.1.

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Besides new material solutions, innovative processing technologies are key for working towards a more sustainable future for bead foam products. Compared to standard steam chest molding, innovative radio frequency (RF) welding shows great potential based on its direct energy input, which results in reduced energy consumption. Thus, the present study provides fundamental insights into the correlation of dielectric properties of expanded thermoplastic polyurethane (ETPU) bead foams with the processing behavior. Impedance spectroscopy is used to analyze the complex relative permittivity 𝜀𝜀!∗ of b
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DCE-MRI V.2, Consensus QIBA Profile. Chair Hendrik Laue and James O'Connor. Radiological Society of North America (RSNA)/Quantitative Imaging Biomarkers Alliance (QIBA), 2023. https://doi.org/10.1148/qiba/20231206.

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The goal of the DCE-MRI quantification QIBA Profile version 2.0 is to provide an update from the Dynamic Contrast Enhanced MRI (DCE-MRI) Quantification profile (version 1.0, dated July 1, 2012) in order to include the use of 3 Tesla (T) MRI and the use of parallel imaging with receiver coil arrays. While many pharmacokinetic models have been described, this QIBA Profile (DCE-MRI Quantification) specifically addresses the physiological parameter Ktrans derived from the Tofts or generalized kinetic model (GKM) (1), which is correlated with the vessel (surface/area product and permeability) and h
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Chutimaworapan, Suchada, Chaiyo Chaichantippayuth, and Areerat Laopaksa. Formulation of pharmaceutical products of Garcinia mangostana Linn. extracts. Chulalongkorn University, 2006. https://doi.org/10.58837/chula.res.2006.32.

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Part I: The purpose of the investigation was to develop the extraction process that was simple, practical and giving high yield. The maceration of dried powder of Garcinia mangostana fruit husk with ethyl acetate gave yellow crystalline powder of mangostin. The yield was calculated as 7.47%. The identification of the Garcinia mangostanahusk extract was carried out by thin-layer chromatography (TLC) and differential scanning calorimetry. The TLC of mangostin was done by using the alumina sheet and ethyl acetate: hexane (3:1) as mobile phase. The Rf value as compared with standard mangostin was
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Mizrach, Amos, Sydney L. Spahr, Ephraim Maltz, et al. Ultrasonic Body Condition Measurements for Computerized Dairy Management Systems. United States Department of Agriculture, 1993. http://dx.doi.org/10.32747/1993.7568109.bard.

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The body condition (BC) score is recognized in the dairy industry as an essential tool for managing the energy reserves of the dairy cow, which is essential for sustaining optimal and efficient production over several lactations. The current use of BC scoring depends on the accuracy of subjective visual estimates, and this limits its kusefulness as a management aid in the dairy industry. A measuring tool that would frequently provide objective data on the cow's body reserves would be a major contribution to efficient dairy herd management. Ultrasonic sensors have the potential to be developed
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