Stripper Field Performance Comparison of Chemical and Microbial Paraffin Control Systems

1999 ◽  
Author(s):  
Leo A. Giangiacomo
Keyword(s):  
Control Systems ◽  
Field Performance ◽  
Performance Comparison

Line-of-Sight Wall versus Conventional Noise Wall for Traffic Noise Abatement: Field Performance Comparison

2015 ◽  
Vol 29 (6) ◽  
pp. 04014145
Author(s):  
Shuo Li ◽  
Bowen Guan ◽  
Yingzi (Eliza) Du ◽  
Samy Noureldin
Keyword(s):  
Traffic Noise ◽  
Field Performance ◽  
Performance Comparison ◽  
Line Of Sight ◽  
Noise Abatement

Buildings with environmental quality management, part 2: Integration of hydronic heating/cooling with thermal mass

2017 ◽  
Vol 41 (5) ◽  
pp. 397-417 ◽  
Author(s):  
A Romanska-Zapala ◽  
M Bomberg ◽  
M Fedorczak-Cisak ◽  
M Furtak ◽  
D Yarbrough ◽  
...  
Keyword(s):  
Control Systems ◽  
Design Process ◽  
Architectural Design ◽  
Integrated Design ◽  
Field Performance ◽  
Functional Materials ◽  
Heating System ◽  
Transient Temperature ◽  
Thermal Mass ◽  
Integrated Design Process

The quest for a sustainable built environment brought dramatic changes to architectural design because of the integrated design process. The integrated design process is the modern way to realize “performance architecture,” that is, design with a view to field performance. Integrated design process permits merging of concepts from passive-house designs, solar engineering, and an integration of the building enclosure with mechanical services. In part 1 of this series, the emergence of many new multi-functional materials was discussed. Yet, current innovation is guided by lessons from history. Thermal mass in heavy masonry buildings allowed periodic heating. The authors postulate integration of a hydronic heating system with the walls and the use of smart temperature control of the heating system to modify and optimize the thermal mass contribution. To use the mass of a building, one must accept transient temperature conditions where the indoor temperature varies but is confined by comfort requirements for both summer and winter conditions. On the other side, resiliency requirements dictate that in the absence of electricity the air temperature does not fall below about 12°C over a period of several hours. This requirement implies that summer cooling will likely be separated from the heating systems and that operation of a low-energy building is heavily dependent on the design of smart control systems. Analysis of control systems provided in this article for earth-to-air heat exchangers and cooling of houses with lightweight walls lead us to the requirements of separation between heating and ventilation and needs for different sources of fresh air. Finally, a new concept emerges.

Field performance comparison of asphalt crack-filling materials: hot pour versus cold pour

2007 ◽  
Vol 34 (4) ◽  
pp. 505-512 ◽  
Author(s):  
Yetkin Yildirim
Keyword(s):  
Field Performance ◽  
Weather Conditions ◽  
Performance Comparison ◽  
Asphalt Pavements ◽  
Asphalt Emulsion ◽  
Pavement Maintenance ◽  
Filling Materials ◽  
Crack Sealing ◽  
Study Results ◽  
Crack Sealant

One of the most important components of pavement maintenance has been the sealing of cracks. The most commonly used materials for crack sealing are hot-pour sealants, such as hot rubber asphalt. However, this material can be hazardous at high operating temperatures and is more likely to be picked up by vehicle tires if the sealant is not sufficiently adhered to the pavement. Thus, cold-pour sealants have been considered as an alternative for crack sealing purposes. This study aims to compare the performance of hot-pour rubber asphalt crack sealant and cold-pour asphalt emulsion crack sealant in five different Texas districts that experience different weather conditions. The comparison includes seven different crack sealants: three cold pour and four hot pour. Five different roads in five districts were selected for comparison of the sealants. The field study results indicate that hot-pour sealants performed better than cold-pour sealants.Key words: sealants, emulsified crack sealants, crack sealing, asphalt pavements.

Paper 8: The Dynamic Performance of Tractor–Implement Combinations

1969 ◽  
Vol 184 (17) ◽  
pp. 68-82
Author(s):  
M. J. Dwyer
Keyword(s):  
Control System ◽  
Control Systems ◽  
Dynamic Performance ◽  
Field Tests ◽  
Field Performance ◽  
Standard Test ◽  
Forward Speed ◽  
Response Characteristics ◽  
Sensing Systems ◽  
Significant Difference

The dynamic performance of tractor-implement combinations is considered theoretically in terms of the changes in load, weight transfer, and forward speed arising from variations in implement working depth. Two tractors, one having a top-link sensing control system and the other having a lower-link sensing control system, were modified so that the driving wheels ran eccentrically, imparting a sinusoidal variation in working depth to mounted implements and field tests were carried out using mouldboard and chisel ploughs. The draught and vertical forces between the tractors and implements were recorded continuously during the test runs, together with implement working depth, tractor engine speed, and forward speed. Measured variations in draught correlated well with the variations predicted from laboratory measurements of the tractor implement-control system characteristics. It is concluded, therefore, that field performance can be predicted from standard test data if such measurements are incorporated. The theoretical analysis is used to suggest optimum parameters for implement-control systems. With fully-mounted implements, no significant difference was found between top- and lower-link sensing systems which were otherwise similar. Chisel ploughs were shown to be more difficult to control than mouldboard ploughs. Higher sensititivies would be required to retain control at higher working speeds and also for operating semi-mounted implements with lower-link sensing systems. Semi-mounted chisel ploughs are likely to be more easily controlled than fully mounted ones, but semi-mounted mouldboard ploughs would be slightly more difficult to control than fully mounted ones. A small dead-band in the response characteristics of implement-control systems is shown to have negligible effect on performance, and current maximum rates of lift are likely to be adequate for control purposes.

scholarly journals Field Performance Comparison of Two Transgenic Summer Squash Hybrids to Their Parental Hybrid Line

HortScience ◽  
1995 ◽  
Vol 30 (3) ◽  
pp. 492-493 ◽  
Author(s):  
Juan Pablo Arce-Ochoa ◽  
Frank Dainello ◽  
Leonard M. Pike ◽  
David Drews
Keyword(s):  
Mosaic Virus ◽  
Zucchini Yellow Mosaic Virus ◽  
Field Performance ◽  
Performance Comparison ◽  
Yellow Mosaic Virus ◽  
Watermelon Mosaic Virus ◽  
Parental Line ◽  
Summer Squash ◽  
Transgenic Squash ◽  
Marketable Fruit

`Pavo', a commercially grown, virus-susceptible squash (Cucurbita pepo L.) hybrid, and two experimental virus-resistant transgenic squash hybrids, XPH-1719 and XPH-1739, were tested for field performance. The two transgenic squash hybrids possess the desired fruit and plant characteristics of their parental line, `Pavo', plus resistance to zucchini yellow mosaic virus and watermelon mosaic virus 2 (XPH-1719), and resistance to zucchini yellow mosaic virus, watermelon mosaic virus 2, and cucumber mosaic virus (XPH-1739). Percent emergence and days to flowering were similar among the three hybrids. XPH-1719 and XPH-1739 were equally effective in producing a high percentage of quality marketable fruit and yields with 90% and 13,800 kg·ha–1 and 87% and 16,500 kg·ha–1, respectively. XPH-1719 and XPH-1739 demonstrated their outstanding virus resistance over `Pavo' by producing only 3% and 14% symptomatic plants, respectively, compared to 53% for `Pavo'. They also produced the lowest percentage of infected fruit, 0% and 7%, respectively, with `Pavo' at 26%.

Field performance comparison of the combine harvesters utilized for rice harvesting in Malaysia

Food Research ◽  
2018 ◽  
Vol 3 (2) ◽  
pp. 177-181 ◽  
Author(s):  
N.A. Wagiman ◽  
N.M. Nawi ◽  
A. Yahya ◽  
A.S.M. Su ◽  
R.M. Nasir
Keyword(s):  
Field Performance ◽  
Performance Comparison ◽  
Combine Harvesters

Field performance comparison of IEEE 802.11b and HomePlug 1.0

2003 ◽  
Author(s):  
M.K. Lee ◽  
H.A. Latchman ◽  
R.E. Newman ◽  
S. Katar ◽  
L. Yonge
Keyword(s):  
Field Performance ◽  
Performance Comparison ◽  
Ieee 802.11B

Field performance of tractor draught control systems

1967 ◽  
Vol 12 (3) ◽  
pp. 205-221 ◽  
Author(s):  
P.A. Cowell ◽  
S.C. Len
Keyword(s):  
Control Systems ◽  
Field Performance
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