Shrinkage of Latex-Modified and Microsilica Concrete Overlays

2003 ◽  
Vol 1834 (1) ◽  
pp. 33-39 ◽  
Author(s):  
Patricia M. Buchanan ◽  
David W. Mokarem ◽  
Richard E. Weyers ◽  
Michael M. Sprinkel
Keyword(s):  
Laboratory Test ◽  
Bridge Deck ◽  
Test Results ◽  
Department Of Transportation ◽  
Concrete Overlays ◽  
Laboratory Test Results ◽  
Significant Difference ◽  
Time Periods ◽  
Virginia Department

Shrinkage performance was examined of Virginia Department of Transportation-approved latex-modified and microsilica concrete overlay mixtures. Research was conducted on both field-sampled and laboratory-fabricated restrained and unrestrained specimens. From crack and delamination surveys of sampled bridge decks and laboratory test results, a shrinkage performance-based specification for the Virginia Department of Transportation was developed. There was no significant difference between the unrestrained shrinkage values of latex-modified and microsilica concrete overlay mixtures for the specified time periods. Restrained microsilica concrete specimens generally cracked earlier and more frequently than restrained latex-modified concrete specimens. However, the bridge deck crack and delamination surveys show that conditions and quality of construction and type and frequency of traffic may have a greater effect on cracking than the overlay material.

Wisconsin Department of Transportation Hot-Mix Asphalt Round Robin Laboratory Qualification Testing Program

2017 ◽  
Vol 2630 (1) ◽  
pp. 103-109
Author(s):  
Gary C. Whited ◽  
Hala Nassereddine ◽  
Barry Paye
Keyword(s):  
Laboratory Test ◽  
Hot Mix Asphalt ◽  
Round Robin ◽  
Management Program ◽  
Test Results ◽  
Department Of Transportation ◽  
State Highway ◽  
Wisconsin Department ◽  
Laboratory Test Results ◽  
Wisconsin Department Of Transportation

The Wisconsin Department of Transportation (DOT), Madison, uses a quality management program (QMP) specification for acceptance and payment of hot-mix asphalt (HMA) pavement. The QMP allows for product acceptance on the basis of contractor quality control (QC) testing when verified by the Wisconsin DOT quality verification (QV) tests. The contractor is required to do daily QC testing of mix properties in a department-certified, qualified laboratory located at the plant site. The Wisconsin DOT maintains a QV program (QVP) and conducts QV tests to determine the quality of the final product. QV and QC test results are compared, and a mix is considered acceptably verified if the two results are within specified limits. When test results do not meet these limits, the Wisconsin DOT performs referee tests to determine mixture conformance, acceptability, and payment. In 2011, the Wisconsin DOT began to see significant increases in the number of requests for referee testing as a result of wide disparities between QC and QV laboratory test results. To investigate this disparity, the department initiated a round robin laboratory test program. Results from the investigation proved to be insightful. The program was expanded and is now a key component of the Wisconsin DOT annual laboratory qualification certification program. This paper describes the program, how it is administered, how tests results are analyzed, and how nonconforming laboratories are identified. Test results obtained from the program are presented and recommendations developed for program improvements. The program details should be useful to other state highway agencies that use contractor QC tests for acceptance.

scholarly journals Analisa Kandungan Merkuri (Hg) Di Wilayah Penambangan Emas Danau Payawan Desa Tumbang Panggo Kecamatan Tasik Payawan Kabupaten Katingan

PROMINE ◽  
2019 ◽  
Vol 7 (2) ◽  
pp. 59-64
Author(s):  
Fahrul Indrajaya ◽  
Lisa Virgiyanti
Keyword(s):  
Water Quality ◽  
Laboratory Test ◽  
Mercury Content ◽  
Quality Parameters ◽  
Test Results ◽  
Central Kalimantan ◽  
River Water Samples ◽  
Quality Of Water ◽  
Laboratory Test Results

Field activities conducted to determine the level of mercury content in the water flow of Lake Payawan,Tumbang Panggo Village, Tasik Payawan District, Katingan Regency, Central Kalimantan Provincebased on laboratory test results to obtain the results of mercury content in upstream to downstream ofLake Payawan. From this research, it is necessary to test the quality of water in the laboratory in orderto analyze the water quality parameters so it can be known mercury content (Hg) in Lake Payawanwater flow. From the test results on 6 points river water samples in the laboratory of the IndustrialResearch and Standardization Center of Banjarbaru City showed the highest mercury content found insample number 3 with P. 2076 test code taken at the location of the middle Lake Payawan TasikPayawan District with mercury levels located At a rate of 0.069 μg / l or 0.000069 mg / l, this reflectsthe presence of other factors that may also affect the level of mercury content in Lake Payawan flow.

scholarly journals OPTIMASI PARAMETER PROSES PEMBUATAN BIOETANOL SORGUM DAN PENGARUH TERHADAP UNJUK KERJA MOTOR BENSIN

Otopro ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. 39
Author(s):  
Teng Sutrisno ◽  
Willyanto Anggono ◽  
Kurniawaan Lay ◽  
Melvin Emil Simanjuntak
Keyword(s):  
Laboratory Test ◽  
Raw Materials ◽  
Test Results ◽  
Alcohol Content ◽  
Fermentation Time ◽  
Renewable Fuel ◽  
Gasoline Engines ◽  
Laboratory Test Results

Bioethanol is a renewable fuel that resembles gasoline, bioethanol is produced from fermentation and distillation processes. One of the raw materials that produce bioethanol is Sorghum. Sorghum was chosen because it is superior to other plants. This study aims to analyze fermentation longtime and enzyme composition for the best composition to produce bioethanol from sorghum, and determine the quality of sorghum bioethanol. This research Sorghum  bioethanol produced with an alcohol content of 94%. The test and analysis variables used were 31 samples. The results of this study are as follows : The best fermentation time is 4 days, the enzyme and yeast variable for the most volume of alcohol is 7% yeast 5% enzyme, the enzyme and yeast variable for the highest alcohol content is 7% yeast 7% enzyme. Laboratory test results when compared with PERTAMINA's standard regulations, especially Pertalite RON 90, Several parameters have rejected the regulations. Therefore sorghum bioethanol is used as an additive for Gasoline. Sorghum bioethanol is made addictive to gasoline RON 90, namely B10 (bioethanol sorghum 10%) and B20 (bioethanol sorghum 20%). It would cause an increase in the performance of gasoline engines.

scholarly journals Children are less affected by COVID-19: a family case study

2020 ◽  
Author(s):  
Di Huang ◽  
KeXin Huang ◽  
Yongya Dai ◽  
Rujun Hu ◽  
Jin Li ◽  
...  
Keyword(s):  
Laboratory Test ◽  
Hospital Stay ◽  
Length Of Hospital Stay ◽  
Test Results ◽  
Laboratory Test Results ◽  
Imaging Results ◽  
Significant Difference ◽  
Family Case ◽  
Family Case Study

Abstract Background: Family clustering has facilitated the transmission of SARS-CoV-2, and the outflows of people from Wuhan to their hometown has become the most important transmission channel in China. The study aimed to investigate the SARS-CoV-2 infection of an entire family, especially children. Methods: This family case study was conducted in General Mountain Hospital, Guizhou Province. In January 2020, we recruited a family of 13 members, including three children and nine adults, at different stages, from admission screening to discharge. We used standardized case report forms to collect clinical data between January 16, 2020 and March 1, 2020. These data included temperature, contact history, incubation period, laboratory test results, imaging results, length of hospital stay, and treatment outcomes. Results: Eight cases had confirmed diagnoses of SARS-CoV-2 infection, including three mild cases (37.5%) and five common cases (62.5%). The child patient had the shortest length of hospital stay and less obvious symptoms. There was no significant difference between the laboratory test results and CT scans. Conclusions: Children are not susceptible to virus infection in their families. Compared with adult patients, pediatric patients have milder symptoms, shorter hospital stays, and lower risk of lung infections. As this cannot confirm whether their nucleic acid amplification tests are negative or positive after discharge, the management and control of discharged patients should therefore be paid additional attention.

scholarly journals Use of laboratory test results in patient management by clinicians in Malawi

2015 ◽  
Vol 4 (1) ◽  
Author(s):  
Kundai Moyo ◽  
Carol Porter ◽  
Ben Chilima ◽  
Reuben Mwenda ◽  
Mark Kabue ◽  
...  
Keyword(s):  
Laboratory Test ◽  
Laboratory Tests ◽  
Patient Management ◽  
Cross Sectional Study ◽  
Laboratory System ◽  
Test Results ◽  
Cross Sectional ◽  
Key Informants ◽  
Laboratory Test Results

Background: Malawi has a high burden of infectious disease. The expansion of programmes targeting these diseases requires a strong laboratory infrastructure to support both diagnosis and treatment.Objectives: To assess the use of laboratory test results in patient management and to determine the requirements for improving laboratory services.Methods: A cross-sectional study was conducted in 2012 to survey practising clinicians.Two hospitals were purposively selected for observations of clinicians ordering laboratory tests. Twelve management-level key informants were interviewed. Descriptive statistics were conducted.Results: A total of 242 clinicians were identified and 216 (89%) were interviewed. Of these, 189 (87%) reported doubting laboratory test results at some point. Clinicians most often doubted the quality of haematology (67%), followed by malaria (53%) and CD4 (22%) test results. A total of 151 (70%) clinicians reported using laboratory tests results in patient management. Use of laboratory test results at all times in patient management varied by the type of health facility (P < 0.001). Ninety-one percent of clinicians reported that laboratories required infrastructure improvement. During 97 observations of clinicians’ use of laboratory test results, 80 tests were ordered, and 73 (91%) of these were used in patient management. Key informants reported that the quality of laboratory services was good and useful, but that services were often unavailable.Conclusion: Gaps in the public laboratory system were evident. Key recommendations to enhance the use of laboratory test results in patient management were to strengthen the supply chain, reduce turn-around times, improve the test menu and improve the laboratory infrastructure.

Effect of Ibuprofen on Serum Laboratory Test Results

1983 ◽  
Vol 40 (6) ◽  
pp. 1025-1034
Author(s):  
Carol L. Colvin ◽  
Raymond J. Townsend ◽  
William R. Gillespie ◽  
Kenneth S. Albert
Keyword(s):  
Laboratory Test ◽  
Test Results ◽  
Laboratory Test Results

Sinonasal effects of external dacryocystorhinostomy

2021 ◽  
pp. 1-4
Author(s):  
H Eyigor ◽  
E A Cetinkaya ◽  
D T Coban ◽  
G Ozturk ◽  
Ö Erdem
Keyword(s):  
Mucociliary Clearance ◽  
Nasal Symptom ◽  
Ciliary Activity ◽  
Test Results ◽  
Saccharine Test ◽  
Significant Difference ◽  
Symptom Scores ◽  
Endoscopic Score ◽  
External Dacryocystorhinostomy

Abstract Objective External dacryocystorhinostomy is thought to cause mucociliary dysfunction by damaging the mucosa, in turn affecting ciliary activity and mucus quality. This study investigated the effect of external dacryocystorhinostomy on sinonasal function. Methods Patients scheduled for unilateral external dacryocystorhinostomy who underwent endoscopic nasal examination and paranasal sinus computed tomography were included in this study. A saccharine test was performed on the planned surgical side and the mucociliary clearance time was determined. The sinonasal quality of life was measured in all patients, pre-operatively and at six months post-operatively, using the Sino-Nasal Outcome Test-22. The Lund–Kennedy endoscopic score was also determined in all patients, both pre- and post-operatively. Results The study comprised 28 patients (22 females and 6 males). A statistically significant difference was found between the pre- and post-operative saccharine test results (p = 0.006), but not between the pre- and post-operative Sino-Nasal Outcome Test-22 scores (p > 0.05). Conclusion This study is one of only a few to investigate the effect of external dacryocystorhinostomy on sinonasal function. The results showed that external dacryocystorhinostomy impairs mucociliary clearance. The surgical procedure is well tolerated and does not significantly change nasal symptom scores.

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