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You searched for: Journal name Transactions of the ASAE Remove constraint Journal name: Transactions of the ASAE Publication year rev 7998-2002 Remove constraint Publication year rev: 7998-2002 Source 2002 v.45 no.2 Remove constraint Source: 2002 v.45 no.2
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1. A Chemiluminescence Fiber-Optic Biosensor Coupled with Immunomagnetic Separation for Rapid Detection of E. Coli O157:H7

Author:
Ye, J.; Liu, Y.; Li, Y.
Source:
Transactions of the ASAE 2002 v.45 no.2 pp. 473-478
ISSN:
0001-2351
Subject:
Campylobacter jejuni; Escherichia coli O157; Listeria monocytogenes; Salmonella Typhimurium; antibodies; bacteria; biosensors; chemiluminescence; detection limit; fiber optics; immunomagnetic separation; magnetic fields; peroxidase; rapid methods; regression analysis
Abstract:
... A biosensor, consisting of a chemiluminescence reaction cell, a fiber-optic light guide, and a luminometer linked to a PC, was developed in conjunction with immunomagnetic separation for rapid detection of E. coli O157:H7. The sample containing E. coli O157:H7 was first incubated with anti- E. coli O157:H7 coated magnetic beads and horseradish peroxidase (HRP) labeled anti- E. coli O157:H7 antibod ...
DOI:
10.13031/2013.8505

2. Effect of Riparian Buffer Width and Vegetation Type on Shallow Groundwater Quality in the Middle Coastal Plain of North Carolina

Author:
Dukes, M.D.; Evans, R.O.; Gilliam, J.W.; Kunickis, S.H.
Source:
Transactions of the ASAE 2002 v.45 no.2 pp. 327-336
ISSN:
0001-2351
Subject:
Festuca; coastal plains; cool season grasses; corn; forests; groundwater; hardwood; hurricanes; indigenous species; mixing; monitoring; nitrate nitrogen; nitrates; no-tillage; pastures; riparian buffers; rye; streams; water quality; wells; North Carolina
Abstract:
... The effect of riparian buffer width and vegetation type on shallow groundwater quality has not been evaluated in the Middle Coastal Plain of North Carolina. Four riparian buffer vegetation types and no-buffer (no-till corn and rye rotation or pasture) were established at 8 and 15 m widths as follows: cool season grass (fescue), deep-rooted grass (switch grass), forest (pine and mixed hardwood), an ...
DOI:
10.13031/2013.8528

3. A Flowmeter for Low Discharges of Laboratory Flumes

Author:
Stomph, T.J.; Ridder, N. de; Giesen, N.C. van de
Source:
Transactions of the ASAE 2002 v.45 no.2 pp. 345-349
ISSN:
0001-2351
Subject:
flowmeters; hydrograph; monitoring
Abstract:
... Discharge measurements over a range from 1 L/s to as low as 0.03 L/s require special instruments. A flowmeter was designed on the basis of theoretical analysis and two major design criteria: (1) the flowmeter should be accurate and flexible in monitoring the full range of indicated discharge rates, and (2) instantaneous measurements of hydrographs should be possible. Furthermore, the relationship ...
DOI:
10.13031/2013.8523

4. Friction of Wheat: Grain-on-Grain and on Corrugated Steel

Author:
Molenda, M.; Horabik, J.; Ross, I.J.; Montross, M.D.
Source:
Transactions of the ASAE 2002 v.45 no.2 pp. 415-420
ISSN:
0001-2351
Subject:
bulk density; friction; soft red winter wheat; steel; water content
Abstract:
... Coefficients of friction of wheat for grain-on-grain and on galvanized corrugated steel sheet were investigated using a modified direct shear apparatus. Tests were conducted under a normal pressure of 20.7 kPa using soft red winter wheat at a moisture content of 11.2% (w.b.) and an uncompressed bulk density of 740 kg/m3. Three consolidation procedures and three methods of deposition of grain in th ...
DOI:
10.13031/2013.8522

5. Infiltration and Soil Water Storage under Winter Cover Cropping in California's Sacramento Valley

Author:
Joyce, B.A.; Wallender, W.W.; Mitchell, J.P.; Huyck, L.M.; Temple, S.R.; Brostrom, P.M.; Hsiao, T.C.
Source:
Transactions of the ASAE 2002 v.45 no.2 pp. 315-326
ISSN:
0001-2351
Subject:
cover crops; evaporation; evapotranspiration; fallow; farming systems; field capacity; hydraulic conductivity; hydrologic models; infiltration (hydrology); irrigation; lysimeters; rain; rhizosphere; runoff; simulation models; soil water; soil water content; soil water storage; surface water; sustainable agriculture; time series analysis; water content; winter; California
Abstract:
... Winter cover cropping on agricultural fields may improve rainfall infiltration and enhance soil water storage in areas such as California's Sacramento Valley, where the majority of precipitation occurs in the winter over a relatively short period of time in a series of heavy rainfall events. Enhanced soil water storage within the root zone on cover-cropped fields may benefit a grower by reducing t ...
DOI:
10.13031/2013.8526

6. Kernel Handling Performance of an Automatic Grain Quality Inspection System

Author:
Wan, Y.N.
Source:
Transactions of the ASAE 2002 v.45 no.2 pp. 369-377
ISSN:
0001-2351
Subject:
cameras; computer vision; containers; grain inspection; grain quality; rice; seeds; wheat
Abstract:
... An automatic kernel handling system, consisting of an automatic inspection machine and an image-processing unit, was developed for machine vision inspection of grain quality. The system could continually present matrix-positioned grain kernels to CCD cameras, singularize each kernel image from the background, and discharge kernels to assigned containers. The inspection machine had scattering and p ...
DOI:
10.13031/2013.8508

7. Management Practices for Sediment Reduction from Forest Roads in the Coastal Plains

Author:
Appelboom, T.W.; Chescheir, G.M.; Skaggs, R.W.; Hesterberg, D.L.
Source:
Transactions of the ASAE 2002 v.45 no.2 pp. 337-344
ISSN:
0001-2351
Subject:
coastal plains; edge effects; energy; forest roads; forests; grasses; gravel; pollutants; rain; runoff; surface water; North Carolina
Abstract:
... Sediment has been identified as one of the most important non-point source pollutants of surface waters. In forested areas, the predominant source of sediment is from the construction and maintenance of access roads, which contribute as much as 90% of the total eroded sediments. Seven different road management practices were studied to determine their effectiveness in reducing sediment production ...
DOI:
10.13031/2013.8529

8. Moisture Adsorption Characteristics of Wheat and Barley

Author:
Casada, M.E.
Source:
Transactions of the ASAE 2002 v.45 no.2 pp. 361-368
ISSN:
0001-2351
Subject:
adsorption; barley; desorption; diffusivity; drying; endosperm; equations; humidity; models; stored grain; temperature; wheat
Abstract:
... Moisture adsorption rates for stored grains are important for accurate modeling of drying and storage. Wheat and barley samples at initial moisture contents typical of grain storage were exposed to several levels of higher humidity at two temperatures to measure adsorption rates. The best fit to the data was achieved with the Page equation and the cellular diffusion equations. The adsorption rates ...
DOI:
10.13031/2013.8507

9. Near-Infrared Spectroscopy as a Tool for Real-Time Determination of BOD(5) for Single-Source Samples

Author:
Stephens, A.B.; Walker, P.N.
Source:
Transactions of the ASAE 2002 v.45 no.2 pp. 451-458
ISSN:
0001-2351
Subject:
absorption; biochemical oxygen demand; detectors; lead; least squares; models; near-infrared spectroscopy; polymerase chain reaction; prediction; silicon; spectral analysis; wastewater; wastewater treatment
Abstract:
... Near-infrared/visible spectroscopy was used to develop predictive models for rapid measurement of five-day biochemical oxygen demand (BOD(5) ), bypassing the traditional five-day incubation time. Spectral absorption measurements and standard method BOD(5) tests of 158 wastewater samples were completed. The transmission spectral measurements were performed on the samples after filtering out particl ...
DOI:
10.13031/2013.8514

10. Pecan Mechanical Harvesting Parameters for Yield Monitoring

Author:
Rains, G.C.; Thomas, D.L.; Perry, C.D.
Source:
Transactions of the ASAE 2002 v.45 no.2 pp. 281-285
ISSN:
0001-2351
Subject:
crop yield; mechanical harvesting; pecans; tree trunk; tree yields; trees; yield monitoring
Abstract:
... A study was conducted to examine how pecan yield from individual trees can be correlated to pecan yield measurements from a mechanical harvester equipped with a yield monitor that weighs pecans as they are dropped into a wagon. For purposes of determining individual tree yields, a method was devised for taking the yield of pecans and foreign material collected by a mechanical harvester close to th ...
DOI:
10.13031/2013.8518

11. Separating Septicemic and Normal Chicken Livers by Visible/Near - Infrared Spectroscopy and Back-Propagation Neural Networks

Author:
Hsieh, C.; Chen, Y.R.; Dey, B.P.; Chan, D.E.
Source:
Transactions of the ASAE 2002 v.45 no.2 pp. 459-469
ISSN:
0001-2351
Subject:
chickens; infrared spectroscopy; liver; neural networks; principal component analysis; wavelengths
Abstract:
... The visible/near-infrared spectra of 300 chicken livers were analyzed to explore the feasibility of using spectroscopy to separate septicemic livers from normal livers. Three strategies involving offset, second difference, and functional link methods were applied to preprocess the spectra, while principal component analysis (PCA) was utilized to reduce the input data dimensions. PCA scores were fe ...
DOI:
10.13031/2013.8515

12. Use of Airborne Multi-Spectral Imagery for Weed Detection in Field Crops

Author:
Goel, P.K.; Prasher, S.O.; Patel, R.M.; Smith, D.L.; DiTommaso, A.
Source:
Transactions of the ASAE 2002 v.45 no.2 pp. 443-449
ISSN:
0001-2351
Subject:
Abutilon theophrasti; Glycine max; Zea mays; agronomy; corn; field crops; grasses; multispectral imagery; planting; remote sensing; soybeans; statistical analysis; wavelengths; weeds; Quebec
Abstract:
... In this article, the potential of multi-spectral airborne remote sensing is evaluated for the detection of weed infestation in corn ( Zea mays L.) and soybean ( Glycine max .) crops. A field plot experiment was laid out at the Lods Agronomy Research Center of Macdonald Campus, McGill University, Ste-Anne-de-Bellevue, Quebec, Canada. A multi-spectral image in 24 wavebands (475.12 nm to 910.01 nm wa ...
DOI:
10.13031/2013.8513

13. Use of Nontopographic Stereophotogrammetry to Measure Morphological Characteristics of Soybean Plants

Author:
Chen, X.; Welch, S.M.
Source:
Transactions of the ASAE 2002 v.45 no.2 pp. 423-431
ISSN:
0001-2351
Subject:
growth chambers; leaf angle; methodology; petioles; photogrammetry; photographs; soybeans
Abstract:
... A new method of measuring soybean geometry via stereophotogrammetry using a hand-held camera was developed and compared with existing approaches. Photographs were taken from both field and greenhouse-reared "Flyer" soybean plants. Leaf lengths were calculated from measurements of the three-dimensional coordinates of leaf tips and petioles. The accuracy of calculated coordinates was improved consid ...
DOI:
10.13031/2013.8511

14. Appropriate Land Use Planning for Slope Land in Taiwan

Author:
Lo, K.F.A.
Source:
Transactions of the ASAE 2002 v.45 no.2 pp. 309-313
ISSN:
0001-2351
Subject:
conservation practices; humans; interviews; land use planning; models; soil water; sustainable development; water conservation; water resources; watersheds; Taiwan
Abstract:
... Thorough land use planning in a slope land watershed requires careful consideration of both natural and social conditions. A modified "simple-accurate" method was used to estimate a land use potential value for each terrain unit of a slope land watershed in Taiwan. Soil loss estimates based on erosion modeling served as a guide for determining the most suitable land use type. The social feedback t ...
DOI:
10.13031/2013.8525

15. Coupling Soybean Cyst Nematode Damage to CROPGRO-Soybean

Author:
Fallick, J.B.; Batchelor, W.D.; Tylka, G.L.; Niblack, T.L.; Paz, J.O.
Source:
Transactions of the ASAE 2002 v.45 no.2 pp. 433-441
ISSN:
0001-2351
Subject:
Glycine max; Heterodera glycines; biomass; canopy; crop damage; crop models; crop production; cultivars; eggs; equations; financial economics; photosynthesis; population density; root water potential; simulation models; soil types; soybeans; water uptake; weather; Iowa; Missouri
Abstract:
... The soybean cyst nematode (SCN) Heterodera glycines Ichinohe is responsible for substantial economic losses in soybean (Glycine max L. Merr.) production throughout the U.S. Results from past efforts to quantify the severity of crop damage resulting from SCN are often subject to variable experimental conditions resulting from differences in weather, soil type, and cultivar. Because of the difficult ...
DOI:
10.13031/2013.8512

16. Design and Tests of a Variable-Flow Fan Nozzle

Author:
Womac, A.R.; Bui, Q.D.
Source:
Transactions of the ASAE 2002 v.45 no.2 pp. 287-295
ISSN:
0001-2351
Subject:
droplet size; droplets; equipment design; fan nozzles; prototypes
Abstract:
... A new-concept variable-flow fan nozzle (VFFN) was developed with an aim to variable-rate chemical application. A split-end meter plunger in a tapered sleeve served as a variable orifice that varied flow rate and droplet size and created a fan spray by impinging streams of liquid together. The fan spray exited at a right angle to the plane of the slit as previously hypothesized due to jetting of sp ...
DOI:
10.13031/2013.8519

17. Effects of Laying Hen Manure Application Rate on Water Quality

Author:
Chinkuyu, A.J.; Kanwar, R.S.; Lorimor, J.C.; Xin, H.; Bailey, T.B.
Source:
Transactions of the ASAE 2002 v.45 no.2 pp. 299-308
ISSN:
0001-2351
Subject:
agricultural land; ammonium nitrate; animal manures; corn; crop yield; fertilizer rates; fertilizers; groundwater; laying hens; lysimeters; manure spreading; nitrate nitrogen; nitrogen; orthophosphates; runoff; surface quality; urea ammonium nitrate; water pollution; water quality
Abstract:
... Excessive use of animal manure on agricultural lands can impact the quality of surface and groundwater resources. A three-year study (1998-2000) was conducted on nine 0.4-ha plots and on six 2.1-m 2 lysimeters to investigate the effect of two nitrogen (N) application rates from laying hen manure and one N application rate from urea ammonium nitrate (UAN) fertilizer on surface and groundwater quali ...
DOI:
10.13031/2013.8524

18. A Method for Rapid Analysis of Biofilm Morphology and Coverage on Glass and Polished and Brushed Stainless Steel

Author:
Lomander,A.; Schreuders, P.; Russek-Cohen, E.; Ali, L.
Source:
Transactions of the ASAE 2002 v.45 no.2 pp. 479-487
ISSN:
0001-2351
Subject:
Escherichia coli; bacteria; biofilm; cleaning; computer software; fluorescence microscopy; food contact surfaces; glass; image analysis; morphometry; propidium; quantitative analysis; rapid methods; sanitizers; stainless steel
Abstract:
... A tool for the rapid analysis of biofilms, using epifluorescence microscopy and image analysis was developed. The tool allows the evaluation of overall biofilm coverage and biofilm patch morphology. It will provide a quantitative method for identifying relationships between biofilms and their substrates and for identifying the morphology of patches of damaged bacteria. The coverage percentage allo ...
DOI:
10.13031/2013.8506

19. A Multiple Locally-Linearized Diesel Engine Model

Author:
Wu, K.; Zhang, Q.; Hansen, A.; Alleyne, A.
Source:
Transactions of the ASAE 2002 v.45 no.2 pp. 273-280
ISSN:
0001-2351
Subject:
all-terrain vehicles; diesel engines; linear models
Abstract:
... The simulation of a diesel engine power source for off-road vehicle powertrains can be simplified by controlling an electric motor to mimic the operation and response of the engine to changes in loading and governor setting. The objective of this research was to develop a diesel engine model to be used to control an electric motor so that it produced torque-speed characteristics closely matching t ...
DOI:
10.13031/2013.8517

20. Predicting Near-Floor Air Velocities for a Slot-Inlet Ventilated Building by Jet Velocity Decay Principles

Author:
Strøm, J.S.; Zhang, G.; Morsing, S.
Source:
Transactions of the ASAE 2002 v.45 no.2 pp. 407-413
ISSN:
0001-2351
Subject:
air; air flow; buildings; momentum; prediction; ventilation systems
Abstract:
... Air velocities near the floor of slot-ventilated buildings are the result of interaction between the supply air jet and the geometry of the confined space. To predict air velocity, the effect of the inlet air jet momentum and the room geometry has to be included. Air movements in a 5 m wide × 3 m high × 8.5 m deep empty slot-ventilated room were studied for two different jet momentum situations un ...
DOI:
10.13031/2013.8521