Comparison of Field Testing with Laboratory Testing of the Durability of Stone

2009 ◽  
pp. 138-138-16
Author(s):  
S. A. Bortz ◽  
Laura Powers ◽  
Bernhard Wonneberger
Keyword(s):  
Laboratory Testing ◽  
Field Testing

Prospects for fertility control in the European rabbit (Oryctolagus cuniculus) using myxoma virus-vectored immunocontraception

2007 ◽  
Vol 34 (7) ◽  
pp. 511 ◽  
Author(s):  
B. H. van Leeuwen ◽  
P. J. Kerr
Keyword(s):  
Laboratory Testing ◽  
Oryctolagus Cuniculus ◽  
Field Testing ◽  
Fertility Control ◽  
Epidemiological Studies ◽  
Myxoma Virus ◽  
European Rabbit ◽  
Medium Term ◽  
Delivery Vector ◽  
Virus Research

Research over the last 15 years has examined whether fertility control can reduce overabundant rabbit populations and whether an effective immunocontraceptive agent can be developed and delivered. The results of this research indicate that for fertility control to have an environmental impact at least 80% of females will need to be infertile and that this infertility will need to be permanent. Epidemiological studies suggest that this level of infertility may be very difficult to obtain with a recombinant myxoma virus because of competition with field strains of virus. Research with laboratory rabbits using recombinant myxoma virus to deliver an immunocontraceptive antigen demonstrated that it was possible to obtain the required level of infertility using rabbit zona pellucida C as an antigen. However, only ~50% of animals remained infertile in the medium term. Further research on delivery vector and antigen selection would be needed to produce a practical immunocontraceptive virus for laboratory testing. Such a virus would then need to be optimised for transmissibility before it would be suitable for field testing.

Comparison of Field Testing with Laboratory Testing of the Durability of Stone

2007 ◽  
Vol 4 (7) ◽  
pp. 100851
Author(s):  
S. A. Bortz ◽  
Laura Powers ◽  
Bernhard Wonneberger ◽  
K. Hoigard ◽  
M. Scheffler ◽  
...  
Keyword(s):  
Laboratory Testing ◽  
Field Testing

Evaluation of Top-Down Cracks in Asphalt Pavements by Using a Self-Calibrating Ultrasonic Technique

2005 ◽  
Vol 1940 (1) ◽  
pp. 63-68 ◽  
Author(s):  
Lev Khazanovich ◽  
Raul Velasquez ◽  
Edouard G. Nesvijski
Keyword(s):  
Asphalt Concrete ◽  
Laboratory Testing ◽  
Asphalt Pavement ◽  
Field Testing ◽  
Test Facility ◽  
Asphalt Pavements ◽  
Concrete Pavements ◽  
Ultrasonic Technique ◽  
Ultrasonic Technology ◽  
Longitudinal Joints

To select the optimal strategy for treatment of a cracked asphalt pavement, it is important to determine the extent of cracking (partial depth or full depth). This paper presents the results of an explanatory study aimed at examining the applicability of the ultrasonic technology for evaluation of cracks and longitudinal joints in flexible pavements. It was shown that this technology, which has been used successfully for many years for the evaluation of concrete structures, could provide a simple, quick, and objective procedure for evaluation of surface distresses in asphalt concrete pavements. The results of laboratory testing and field testing at the Minnesota Road Research Project test facility demonstrate the potential of this technology.

scholarly journals Stop Criteria for Proof Load Tests Verified with Field and Laboratory Testing of the Ruytenschildt Bridge

2018 ◽  
Author(s):  
Eva O.L. Lantsoght ◽  
Yuguang Yang ◽  
Ane de Boer
Keyword(s):  
Laboratory Testing ◽  
Laboratory Tests ◽  
Structural Response ◽  
Bending Moment ◽  
Field Testing ◽  
Load Test ◽  
Load Testing ◽  
Load Tests ◽  
Small Change ◽  
Plain Bars

As the existing bridge stock is aging, improved assessment methods such as proof load testing become increasingly important. Proof load testing involves large loads, and as such the risk for the structure and personnel can be significant. To capture the structural response, extensive measurements are applied to proof load tests. Stop criteria, based on the measured quantities, are used to identify when further loading in a proof load test is not permitted. For proof load testing of buildings, stop criteria are available in existing codes. For bridges, recently stop criteria based on laboratory tests on beams reinforced with plain bars have been proposed. Subsequently, improved stop criteria were developed based on theoretical considerations for bending moment and shear. The stop criteria from the codes and the proposed stop criteria are compared to the results from field testing to collapse on the Ruytenschildt Bridge, and to the results from laboratory tests on beams sawn from the Ruytenschildt Bridge. This comparison shows that only a small change to the stop criteria derived from laboratory testing is necessary. The experimental evidence strengthens the recommendation for using the proposed stop criteria in proof load tests on bridges for bending moment, whereas further testing to confirm the stop criteria for shear is necessary.

scholarly journals FACTORS AFFECTING THE RESPONSE OF CLOVER ESTABLISHMENT TO INOCULATION AND PELLETING

1976 ◽  
pp. 175-181
Author(s):  
W.L. Lowther
Keyword(s):  
Environmental Conditions ◽  
Laboratory Testing ◽  
Soil Acidity ◽  
Acid Soils ◽  
Field Testing ◽  
Vegetative Cover ◽  
Cover Time ◽  
Factors Affecting ◽  
Practical Applications ◽  
Tussock Grassland

Results of trials evaluating the effectiveness of different inoculation and pelleting techniques on the establishment of clovers oversown in tussock grassland sites are discussed. These trials were carried out simulating as far as possible the practical applications. Response to inoculation and pelleting varied with environmental conditions (e.g., altitude, soil acidity and vegetative cover), time of sowing, and populations of rhizobia in the soil. On some soils, clover established reasonably Erom inoculated seed, while on some acid soils effective pelleting of inoculated seed was essential. Environmental conditions influenced the standards required for inoculants and pelleted seed. The importance of field testing in addition to laboratory testing is stressed.

scholarly journals Identifying best practice, installation, laboratory testing and field testing

2014 ◽  
Vol 8 (2) ◽  
pp. 74-83 ◽  
Author(s):  
T. Amis ◽  
J. S. McCartney ◽  
F. Loveridge ◽  
C. G. Olgun ◽  
M. E. Bruce ◽  
...  
Keyword(s):  
Laboratory Testing ◽  
Best Practice ◽  
Field Testing

Development of Corexit 9580—A Chemical Beach Cleaner

1991 ◽  
Vol 1991 (1) ◽  
pp. 395-400 ◽  
Author(s):  
Robert J. Fiocco ◽  
Gerard P. Canevari ◽  
John B. Wilkinson ◽  
Hans O. Jahns ◽  
Jan Bock ◽  
...  
Keyword(s):  
Laboratory Testing ◽  
Field Testing ◽  
New Product ◽  
Wash Water ◽  
Marine Biota ◽  
Prince William Sound ◽  
Exxon Valdez ◽  
Successful Development ◽  
Low Levels

ABSTRACT Chemical beach cleaners can facilitate cleanups of oiled shorelines by improving the efficiency of washing with water. The improvement is a result of reduced adhesion of the oil coating, which makes it easier to remove from shoreline surfaces, thereby reducing washing time and lowering the temperature of the wash water needed to clean a given area. The criteria established for use of chemical beach cleaners in the Exxon Valdez spill cleanup included demonstrating enhanced cleaning with low levels of toxicity to marine biota and with minimal oil dispersion. Since no commercially available products satisfactorily met these criteria for use in Alaska, a new product, Corexit 9580, was specifically developed in response to this need. This paper describes the successful development of this chemical, including both laboratory testing and field testing in Prince William Sound.

scholarly journals CONSTRUCTION QUALITY CONTROL OF UNBOUND LAYERS BASED ON STIFFNESS MODULUS CRITERIA / NESUJUNGTŲ SLUOKSNIŲ KONSTRUKCIJŲ KOKYBĖS KONTROLĖ, ĮVERTINANT STANDUMO MODULIO KRITERIJŲ

2012 ◽  
Vol 18 (1) ◽  
pp. 5-13 ◽  
Author(s):  
Kamran Rafiei ◽  
Amir Kavussi ◽  
Shahaboddin Yasrobi
Keyword(s):  
Quality Control ◽  
Moisture Content ◽  
Laboratory Testing ◽  
Field Testing ◽  
Engineering Properties ◽  
Construction Sites ◽  
Construction Quality ◽  
Stiffness Modulus ◽  
In Situ Conditions ◽  
Moisture Percentage

NDT methods such as Portable Falling Weight Deflectometer (PFWD) provide measurements based on the engineering properties of materials (stiffness) instead of physical properties like field density and moisture content. However, PFWD testing method is not yet proven to be reliable enough for construction quality control. In this research, a laboratory testing unit box was prepared in which unbound materials were compacted at different compaction levels. The stiffness modulus of the compacted layers were then determined under PFWD Testing. The tests were repeated several days after construction when the materials moisture content was decreased to lower values. The results indicated that acceptable correlations exist between the stiffness modulus and both compaction percentage and moisture percentage. In addition, field testing was carried out on different unbound layers in several highway construction sites in Tehran and laboratory results were used in order to control in-situ conditions. With Comparing field and laboratory testing results, it was concluded that PFWD is an appropriate testing device for quality control and compaction monitoring of pavement layers during construction phases. Santrauka NDT metodai, kaip krintančio svorio deflektometrai (PFWD), leidžia matuoti technologines ir fizikines medzcaron;iagu savybes (standumą, tankį ir įmirki). Tačiau PFWD bandymu metodas ir dabar dar nera patvirtintas kaip patikimas konstrukcijų kokybei kontroliuoti. Šiame darbe atlikti laboratoriniai ir natūriniai bandymai, kuriuose buvo tirtos skirtingais lygiais sutankintų tarpusavyje nesujungtų sluoksnių konstrukcijos. Tiriamų medžiagų sluoksnių standumo moduliai buvo nustatyti PFWD metodu. Bandymas buvo pakartotas išlaikius konstrukciją keletą dienų, kai drėgmės kiekis medžiagose sumažejo. Rezultatai parodė, kad yra reikšmine koreliacija tarp standumo modulio ir abiejų sluoksnių sutankinimo lygio bei drėgmės kiekio. Vėliau Teherano vietovese buvo atlikti natūriniai konstrukcijų su skirtingais nesujungtais sluoksniais bandymai. Išanalizavus natūriniu ir laboratoriniu bandymų tyrimų rezultatus, buvo nustatyta, kad PFWD yra tinkamas bandymo metodas konstrukcijų kokybei kontroliuoti ir tinkamam dangos sluoksnių tankinimui parinkti.

A Flexible Genetic Algorithm System for Multi-UAV Surveillance: Algorithm and Flight Testing

2015 ◽  
Vol 03 (01) ◽  
pp. 49-62 ◽  
Author(s):  
Marjorie Darrah ◽  
Jay Wilhelm ◽  
Thilanka Munasinghe ◽  
Kristin Duling ◽  
Steve Yokum ◽  
...  
Keyword(s):  
Genetic Algorithm ◽  
Unmanned Aerial Vehicles ◽  
Laboratory Testing ◽  
Field Testing ◽  
Integration Testing ◽  
Flight Testing ◽  
Aerial Vehicles ◽  
Development Laboratory ◽  
Multi Uav

This paper discusses the development and testing of a flexible genetic algorithm (GA)-based system used for tasking a team of unmanned aerial vehicles (UAVs) to complete a coordinated surveillance mission. The GA development, laboratory testing of the GA to ensure convergence to a "good" solution, integration testing with two ground stations, and the field testing of the algorithms are explained. The algorithm was found to be robust and flexible enough to work in various settings with different UAV types and ground stations.

Assessing Sexual Dysfunction, Part 1: Male Sexual Dysfunction

2016 ◽  
Vol 21 (2) ◽  
pp. 3-8
Author(s):  
Seth D. Cohen ◽  
Steven Mandel ◽  
David B. Samadi
Keyword(s):  
Sexual Dysfunction ◽  
Health Care Professionals ◽  
Laboratory Testing ◽  
Aging Male ◽  
Testosterone Deficiency ◽  
Subjective Complaint ◽  
Validated Questionnaire ◽  
Male Sexual Dysfunction ◽  
Multiple Health

Abstract To properly assess men and women with sexual dysfunction, evaluators should take a biopsychosocial approach that may require consultation with multiple health care professionals from various fields in order to get to the root of the sexual dysfunction; this multidisciplinary methodology offers the best chance of successful treatment. For males, this article focuses on erectile dysfunction (ED) and hypogonadism. The initial evaluation of ED involves a thorough case history, preferably taken from the patient and partner, physical examination, and proper laboratory and diagnostic tests, including an acknowledgment of the subjective complaint. The diagnosis is established on the basis of an individual's report of the consistent inability to attain and maintain an erection sufficient to permit satisfactory sexual intercourse. Initial workups for ED should entail a detailed history that can be obtained from a validated questionnaire such as the International Index of Erectile Function and the Sexual Health Inventory for Men. Hypogonadism is evaluated using the validated Androgen Deficiency in the Aging Male questionnaire and laboratory testing for testosterone deficiency. Treatments logically can begin with the least invasive and then progress to more invasive strategies after appropriate counseling. The last and most important treatment component when caring for men with sexual dysfunction—and, arguably, the least practiced—is close follow-up.

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