Measurement of the Internal Relative Humidity Distribution in Concrete

2010 ◽  
Vol 163-167 ◽  
pp. 1409-1413 ◽  
Author(s):  
Ji Kai Zhou ◽  
Xu Dong Chen ◽  
Jian Zhang ◽  
Xiao Wei Kan
Keyword(s):  
Relative Humidity ◽  
Significant Influence ◽  
Measurement System ◽  
External Environment ◽  
Measuring Method ◽  
Test Results ◽  
Moisture Contents ◽  
Cement Based Materials ◽  
Predrilled Hole ◽  
Internal Relative Humidity

The internal relative humidity (RH) and humidity gradients in concrete at early ages have a significant influence upon the properties of concrete, where exists a great discrepancy among the test results under different methods. By comparing and analyzing the traditional measuring methods of the RH in concrete, a new measuring method will be developed in this study, which could measure the internal RH in cement-based materials accurately, conveniently and digitally. The changing laws of the internal RH in concrete at early ages were discussed. The results indicate that the measuring results under the new developed system was more accurate than that by the predrilled hole method, while the external environment does not have any effect on the measured results obtained by using the new measurement system. What’s more, the results achieved by the new developed system approached the real RH in concrete very quickly; the RH near the surface of the specimen decreased quickly, while the RH in the center of the specimen decreased slowly, the moisture contents unevenly distributed through the various height of the specimen. Hence, there exists an obvious humidity gradient in concrete.

scholarly journals Towards an SI-Traceable Reference Measurement System for Seven Serum Apolipoproteins Using Bottom-Up Quantitative Proteomics: Conceptual Approach Enabled by Cross-Disciplinary/Cross-Sector Collaboration

2020 ◽  
Author(s):  
Christa M Cobbaert ◽  
Harald Althaus ◽  
Ilijana Begcevic Brkovic ◽  
Uta Ceglarek ◽  
Stefan Coassin ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Cardiovascular Disease ◽  
Measurement System ◽  
Protein Quantification ◽  
Test Results ◽  
Conceptual Approach ◽  
Reference Measurement ◽  
Lipid Panel ◽  
Mass Spectrometry Technology ◽  
Reference Measurement System

Abstract Current dyslipidemia management in patients with atherosclerotic cardiovascular disease (ASCVD) is based on traditional serum lipids. Yet, there is some indication from basic research that serum apolipoproteins A-I, (a), B, C-I, C-II, C-III, and E may give better pathophysiological insight into the root causes of dyslipidemia. To facilitate the future adoption of clinical serum apolipoprotein (apo) profiling for precision medicine, strategies for accurate testing should be developed in advance. Recent discoveries in basic science and translational medicine set the stage for the IFCC Working Group on Apolipoproteins by Mass Spectrometry. Main drivers were the convergence of unmet clinical needs in cardiovascular disease (CVD) patients with enabling technology and metrology. First, the residual cardiovascular risk after accounting for established risk factors demonstrates that the current lipid panel is too limited to capture the full complexity of lipid metabolism in patients. Second, there is a need for accurate test results in highly polymorphic and atherogenic apolipoproteins such as apo(a). Third, sufficient robustness of mass spectrometry technology allows reproducible protein quantification at the molecular level. Fourth, several calibration hierarchies in the revised ISO 17511:2020 guideline facilitate metrological traceability of test results, the highest achievable standard being traceability to SI. This article outlines the conceptual approach aimed at achieving a novel, multiplexed Reference Measurement System (RMS) for seven apolipoproteins based on isotope dilution mass spectrometry and peptide-based calibration. This RMS should enable standardization of existing and emerging apolipoprotein assays to SI, within allowable limits of measurement uncertainty, through a sustainable network of Reference Laboratories.

Invariant method for measuring wet gas flow rate

2021 ◽  
pp. 13-19
Author(s):  
Zhanat А. Dayev ◽  
Gulzhan E. Shopanova ◽  
Bakytgul А. Toksanbaeva
Keyword(s):  
Flow Rate ◽  
Measurement System ◽  
Flow Measurement ◽  
Gas Flow ◽  
Test Results ◽  
Invariant System ◽  
Rate Measurement ◽  
Gas Flow Rate ◽  
Flow Rate Measurement ◽  
Wet Gas

The article deals with one of the important tasks of modern flow measurement, which is related to the measurement of the flow rate and the amount of wet gas. This task becomes especially important when it becomes necessary to obtain information about the separate amount of the dry part of the gas that is contained in the form of a mixture in the wet gas stream. The paper presents the principle of operation and structure of the invariant system for measuring the flow rate of wet gas, which is based on the combined use of differential pressure flowmeters and Coriolis flowmeters. The operation of the invariant wet gas flow rate measurement system is based on the simultaneous application of the multichannel principle and the partial flow measurement method. Coriolis flowmeters and the differential pressure flowmeter are used as the main elements of the system. The proposed measurement system does not offer applications for gases with abundant drip humidity. The article provides information about the test results of the proposed invariant system. The estimation of the metrological characteristics of the invariant system when measuring the flow rate of wet gas is given. The obtained test results of the invariant wet gas flow rate measurement system are relevant for natural gas production, transportation, and storage facilities.

EFFECT OF MOISTURE CONTENT ON VIABILITY AND INFESTATION OF HULLESS TERRA OATS IN STORAGE

1979 ◽  
Vol 59 (4) ◽  
pp. 911-916 ◽  
Author(s):  
R. N. SINHA ◽  
N. D. G. WHITE ◽  
H. A. H. WALLACE ◽  
R. I. H. McKENZIE
Keyword(s):  
Relative Humidity ◽  
Moisture Content ◽  
Mite Infestation ◽  
Tyrophagus Putrescentiae ◽  
Adsorption And Desorption ◽  
Safe Storage ◽  
Moisture Contents ◽  
Seed Moisture ◽  
Effect Of Moisture

The effects of various seed moisture contents in hulless (cv. Terra) and hulled oats (cv. Random) on susceptibility to mite infestation and on mycofloral growth and germination loss were studied at weekly intervals. Fat acidity values were determined for Terra oats only after 4 wk of storage. Moisture content-relative humidity adsorption and desorption curves were determined for Terra at 22 °C and at relative humidities of 35–100%. Terra oats, which had a higher level of Penicillium infection at 90–100% RH than Random oats, lost viability more rapidly than Random. Fat acidity values of Terra increased rapidly from 35 mg KOH/100 g of seed to 87–118 mg KOH/100 g of seed, only when seeds were stored at 90–100% RH. Terra offered a more favorable substrate for the multiplication of the mites Tyrophagus putrescentiae, Acarus farris, and Lepidoglyphus destructor than did Random. With the exception of susceptibility to mite infestation, safe storage criteria are similar for hulled and hulless oats at usual moisture contents.

Implementation for High-Precision and Non-Contact System for the Measurement of Crankshaft and Camshaft

2011 ◽  
Vol 301-303 ◽  
pp. 959-964 ◽  
Author(s):  
Da Lin Cheng ◽  
Yi Wang ◽  
Yong Jie Ren ◽  
Xue You Yang
Keyword(s):  
Standard Deviation ◽  
High Precision ◽  
Measurement System ◽  
General Structure ◽  
Contact System ◽  
Scanning Laser ◽  
Test Results ◽  
Line Measurement ◽  
On Line ◽  
High Depth

A novel crankshaft and camshaft measurement system by optoelectronic scanning of which a flat-crystal was used to generate high depth of parallelism scanning laser was implemented. The general structure and principle were given. Mass of test results showed that the system could achieve high precision. The ranges could achieve ±8μm, standard deviation could achieve 3μm, and easy to operate, work reliably, automatically and on line measurement could be implemented.

scholarly journals PERFORMA ITIK LOKAL JANTAN (Anas plathyrynchos) YANG DIBERI PAKAN SUPLEMEN

2018 ◽  
Vol 32 (1) ◽  
pp. 35
Author(s):  
Wara Pratitis Sabar Suprayogi ◽  
Sudibya Sudibya ◽  
Eko Hari Susilo
Keyword(s):  
Fish Oil ◽  
Research Design ◽  
Significant Influence ◽  
Variance Analysis ◽  
Weight Increase ◽  
Feed Consumption ◽  
Test Results ◽  
Feed Conversion ◽  
Random Design ◽  
Feed Cost

<p><em>The research was to know the influence of the supplementation lemuru fish oil and L-carnitine on the local male ducks’ performance. The cattle used were 96 local male ducks aged 10 days. Research materials were corn, bran, concentrate 144, lemuru fish oil, and L-carnitine. The research design used was Complete Random Design with 3 treatments and 8 repetitions; each repetition contained 4 local male ducks. The treatment consisted of ration control P0 = corn, barn, concentrate and mineral; P1 = corn, barn, mineral and 4% lemuru fish oil; P2 = corn, barn, concentrate, mineral, 4% lemuru fish oil and 30 ppm L-carnitine. The investigated modifiers were feed consumption, feed conversion, daily weight increase and Income Over Feed Cost value. Data feed consumption, daily weight increase, feed conversion was analyzed using variance analysis. If there were a concrete influence, further analysis should be conducted using orthogonal contrast. Results showed that the supplementation of lemuru fish oil and L-carnitine had a very significant influence (P&lt;0.01) on feed consumption, daily weight increase and feed conversion. Further test results orthogonal contrast showed that the supplementation of lemuru fish oil and L-carnitine could decrease feed consumption, feed conversion and increase daily weight rate (P&lt;0.01) if compared control. Result Income Over Feed Cost showed that treatment with add lemuru fish oil and L-carnitine produced Income Over Feed Cost value higher if compared control. Based on the results of the research, it could be concluded that the supplementation of 4% lemuru fish oil and 30 ppm L-carnitine in ration could decrease feed consumption and feed conversion, increase daily weight rate, and the IOFC of local male ducks.</em></p>

scholarly journals Peranan Kompetensi Dalam Meningkatkan Kinerja Karyawan PT. Summit Oto Finance

MBIA ◽  
2019 ◽  
Vol 18 (2) ◽  
pp. 43-51
Author(s):  
Shandra Bahasoan
Keyword(s):  
Linear Regression ◽  
Multiple Linear Regression ◽  
Significant Influence ◽  
Employee Performance ◽  
Self Concept ◽  
Research Approach ◽  
Test Results ◽  
Quantitative Descriptive ◽  
Descriptive Method

The study was conducted aimed at knowing the role of competencies, namely knowledge, skills and self-concept in improving the performance of employees of PT. Summit Oto Finance, with a sample of 54 people . The method used in this study using questionnaires, interviews and documentation. Research approach by using quantitative descriptive method by analyzing Multiple Linear Regression to measure the performance of employees of PT. Summit Oto Finance. The results of this study simultaneously independent competency variables consisting of knowledge, skills and self-concept have a positive and significant influence on the dependent variable,namely employee performance. From the test results the correlation of the influence of competencies on employee performance is 94.1 percent while 5.9 percent is influenced by other factors. Dominant competencies affect the performance of employees of PT. Summit Oto Finance is a skill.

scholarly journals Pengaruh Harga, Kualitas Pelayanan, dan Costumer Relationship Management Terhadap Keputusan Pembelian Pada Asuransi Astra (Garda OTO)

2021 ◽  
Vol 4 (2) ◽  
pp. 673-679
Author(s):  
Dhita Adriani Rangkuti ◽  
Mey Monita Lestari Manalu ◽  
Sartika Nanda Lestari ◽  
Brian Robuli ◽  
Irfan Boy Samosir
Keyword(s):  
Service Quality ◽  
Hypothesis Testing ◽  
Customer Relationship Management ◽  
Significant Influence ◽  
Relationship Management ◽  
Customer Relationship ◽  
Primary Data ◽  
Test Results ◽  
Purchasing Decisions ◽  
F Test

The purpose of this study was to determine and analyze the effect oprice, service quality, and customer relationship management on the purchase decision of Asuransi Astra Garda OtoMedan, JL.ImanBonjol. The data used are primary data obtained from the answer of 85 respondents by accidental sampling method. Data collection techniques used in this study used a questionnaire and interview technique. Data analysis techniquesin the study used linear regression, classic assumption  tests, hypothesis testing (t test and f test) and the coefficiecnt of determination. Hypothesis testing results indicate that partially (t) obtained value for t count price of 2,833 > t table 1,658 and sig value obtained 0,005<0,05 which means that price has a positive and significant influence on purchasing decisions in using Astra Insurance services (Garda Oto). Partially obtained value for service quality tcount 5.152 >ttable 1.658 and sig value obtained 0.000 <0.05 which means that service quality has a positive and significant influence on purchasing decisions in using Astra Insurance (Garda Oto) services, partially obtained value for customer relationship management t count 8.878 > 1.658 t table and the sig value obtained is 0.000 <0.05 which means that customer relationship management has a positive and significant influence on purchasing decisions in using Astra Insurance (Garda Oto) services, for the F test results obtained calculated F value = 77.769 > f table (2.69), and a significance probability of 0.000 <0.05, meaning that simultaneously prices, service quality and customer relationship management have a positive and significant effect on purchasing decisions in using Astra Insurance Services (Garda Oto). Keywords: Price, Service Quality, and Customer Relationship Management.

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