Planning laboratory tests and field trials for evaluating ATSC DTV on SFN networks in Mexico City

2015 ◽  
Author(s):  
R. A. Zavaleta ◽  
J. Huerta ◽  
M. A. Hernandez ◽  
J. M. Matias
Keyword(s):  
Mexico City ◽  
Laboratory Tests ◽  
Field Trials

scholarly journals Sustainable Control of Equine Nematodes: A Literature Review about Control by Fungal Cultures

2019 ◽  
Vol 8 (2) ◽  
pp. 20
Author(s):  
Heli I. Koskinen
Keyword(s):  
Literature Review ◽  
Laboratory Tests ◽  
Sustainable Use ◽  
Field Trials ◽  
Review Of Literature ◽  
Veterinary Practitioner ◽  
New Knowledge

Larsen, Nansen, Grönvold, Wolstrup and Henriksen (1997) have previously reviewed the prospects of control of equine nematodes by using fungal cultures. Since then more investigations have been implemented and actualized. Field trials and laboratory tests have been reported with new perspectives and increasing number of animals in trials. The aim of this new review of literature is to add new knowledge to those questions that remained open in the 1990s. In particular, on the perspective of veterinary practitioner and sustainable use of deworming practices it is important to know those directions which should be followed.

scholarly journals Laboratory and field evaluation of pyriminyl as a poison for Rattus norvegicus

1980 ◽  
Vol 84 (3) ◽  
pp. 347-354
Author(s):  
B. D. Rentnison ◽  
R. Redfern ◽  
A. C. Dubock ◽  
J. E. Gill ◽  
C. G. J. Richards
Keyword(s):  
Rattus Norvegicus ◽  
Laboratory Tests ◽  
Corn Oil ◽  
Field Evaluation ◽  
Field Trials ◽  
Zinc Phosphide ◽  
Optimum Concentration ◽  
Commercial Use

SUMMARYLaboratory tests indicated that the optimum concentration for pyriminyl in rat baits was between 1% and 3%. In field trials in which 0·5% pyriminyl (the concentration in commercial use) was compared with 2·5% zinc phosphide for the control of rats on farms, the pyriminyl treatments were significantly less effective than the zinc phosphide even when the poisoned baits were left down for 7 days instead of 1 day after prebaiting. Both poisons were as effective in medium oatmeal bait as they were in medium oatmeal containing 5% corn oil and 5% sugar.

RECENT ADVANCES IN DISPERSANT EFFECTIVENESS EVALUATION: EXPERIMENTAL AND FIELD ASPECTS

1985 ◽  
Vol 1985 (1) ◽  
pp. 445-452 ◽  
Author(s):  
J. P. Desmarquest ◽  
J. Croquette ◽  
F. Merlin ◽  
C. Bocard ◽  
G. Castaing ◽  
...  
Keyword(s):  
Laboratory Tests ◽  
Oil Spills ◽  
Practical Interest ◽  
Field Tests ◽  
Field Trials ◽  
Large Field ◽  
Experimental Program ◽  
Experimental Conditions ◽  
Good Accord ◽  
Dispersant Effectiveness

ABSTRACT Although dispersants are used in different countries, it appeared from recent international meetings that more knowledge concerning dispersant effectiveness is still needed for a better response to oil spills. Large field trials which were conducted during the past two years raised some questions as to how dispersants work at sea. Even though the results obtained in different laboratory tests are generally in good accord, significant discrepancies of practical interest may be observed because of variations in the experimental conditions. With EEC support, an experimental program has been conducted by CEDRE and Institut Français du Pétrole (IFP), both with the already-described French middle scale field test and with different laboratory tests (U.K. and French standard tests and the recently developed dilution test). With the objective of correlating the results obtained in field tests and in laboratory tests, several parameters were investigated at sea with different dispersants: the type and viscosity of the oil, slick thickness, and oil to dispersant ratio. Based mainly on the results obtained in the laboratory with dilution tests, new aspects of dispersant behavior have been identified, relating to the nature of the oil and the energy input.

SUSCEPTIBILITY OF THE BLACK SPRUCE CONE MAGGOT, STROBILOMYIA APPALACHENSIS MICHELSEN (DIPTERA: ANTHOMYIIDAE) TO ENTOMOPATHOGENIC NEMATODES (NEMATODA: STEINERNEMATIDAE)

1995 ◽  
Vol 127 (6) ◽  
pp. 865-875 ◽  
Author(s):  
J.D. Sweeney ◽  
G.N. Gesner
Keyword(s):  
Laboratory Tests ◽  
Entomopathogenic Nematodes ◽  
Black Spruce ◽  
Field Trials ◽  
Steinernema Carpocapsae ◽  
Repeated Applications

AbstractLarvae of the black spruce cone maggot, Strobilomyia appalachensis, were infected and killed by Steinernema carpocapsae (Weiser) All and Umeå strains, S. feltiae (Filipjev) (= bibionis) strain 27, and S. glaseri Steiner strain 326, in laboratory tests. After formation of puparia, however, cone maggots were practically resistant to all species and strains tested. Very few or no maggots were infected when nematodes were sprayed on or injected into infested spruce cones. The survival, activity, and infectivity of infective juveniles held in an aerated infusion of black spruce cones were significantly lower compared with those held in aerated water. In peat–sand columns, the proportion of larvae infected with S. feltiae, but not S. carpocapsae Umeå strain, was significantly greater when larvae were dropped immediately or 1 day following nematode application compared with 1 day before or 3 days following nematode application. Our results suggest that, in field trials for cone maggot suppression, nematodes should be applied within a day prior to larval drop and that repeated applications may be required for persistence of sufficient infectivity.

HAND TOOLS OPERATOR 'S HEALTH WORKSHOP ON MECHANICAL AND LEVEL OF RISK WHITE SYNDROME FINGERS

2016 ◽  
Vol 78 (5) ◽  
Author(s):  
Toni Dwi Putra ◽  
Vitri Pitrandjalisari ◽  
Nurida Finahari
Keyword(s):  
Working Conditions ◽  
Laboratory Tests ◽  
Field Data ◽  
Field Trials ◽  
Safety Equipment ◽  
Hand Tools ◽  
White Syndrome ◽  
Shoulder Joints ◽  
Hand Tool ◽  
Negative Effect

Workers in the metal industry are using the equipment (hand tool) that produces vibrations. These vibrations have a negative effect on the fingers, forearm, or shoulder joints. Disorders that often arises is often called the effects of hand arm vibration. These effects vary of workers, ranging from finger whitened condition to the inability to move the finger. Lack of security and safety equipment will further enlarge this negative effect, because the disturbance will result in declining labor productivity. This study aims to model safety equipment in the form of fluidic damper to reduce glove hand arm vibration. This objective will be carried out in stages: 1) obtain field data on working conditions, workload with a hand tool and type of equipment used, 2) determine the parameters of vibration hand tool that is widely used, 3) modeling and making fluidic damper glove, perform the test comparison of the use and without the use of glove, 4) glove on field trials that have been surveyed. In the period of the study for 2 years, each parameter vibration hand tools frequently used can be measured in the laboratory. Tests conducted to determine the vibration of the arms that operate hand tools. Fluidic damper glove designed to dampen vibrations in the arm so that its effect on health problems can be reduced.

Calcium Naphthenates in Complex Production Systems - Evaluation and Chemical Inhibition Challenges

2014 ◽  
Author(s):  
D.A.. A. Nichols ◽  
F.F.. F. Rosário ◽  
M.C.M.. C.M. Bezerra ◽  
S.E.. E. Gorringe ◽  
H.L.. L. Williams ◽  
...  
Keyword(s):  
Laboratory Tests ◽  
Production Systems ◽  
Field Trials ◽  
Field Application ◽  
Worst Case ◽  
Full Field ◽  
Bicarbonate Ions ◽  
High Calcium ◽  
Low Levels ◽  
Field Deployment

Abstract Over the last 15 years, much research and many field application studies have led to considerable improvement in our understanding of the formation and mitigation of calcium naphthenate deposits. In this field example, calcium naphthenates and stable emulsions are formed following mixing of fluids from different reservoir formations on a single FPSO. High TAN crudes containing low levels of ARN produce with low calcium formation waters whereas low TAN crudes are associated with high calcium formation waters. Mixing of these two systems has led to calcium naphthenate deposition and associated problems with its removal. This paper outlines the challenges in this complex deepwater subsea production system and the interpretation of the cause of the deposit. A series of laboratory tests using a specialised flow rig were conducted to illustrate the effects of mixing different fluids and identify those mixtures with the largest naphthenate potential. The work further illustrates the effect of bicarbonate ions on the system. Laboratory tests at low levels of bicarbonate (to prevent carbonate scaling at separator conditions) do not result in calcium naphthenate formation when mixing the high TAN crude with the current produced brine (moderate calcium). Naphthenates only formed when mixing with the high calcium brine. When bicarbonate is included at full field levels (in the presence of a scale inhibitor) significant calcium naphthenate formation is recorded with the lower calcium brines. The effect of CO2 within the produced fluids has also been evaluated. The paper describes how several variables contribute to the likelihood of calcium naphthenate deposition and presents results from several naphthenate formation and inhibition tests covering a range of fluid compositions and mixtures. Chemical qualification in the lab using the worst case fluid mixtures has been conducted to select a calcium naphthenate inhibitor for field deployment. Field trials demonstrate both the effectiveness of the treatments and also the qualification exercise conducted for this field. The results further indicate the complexity of accurately predicting a calcium naphthenate risk while illustrating that, even under challenging conditions, chemical inhibitors are effective in this system.

DISPERSANTS: COMPARISON OF LABORATORY TESTS AND FIELD TRIALS WITH PRACTICAL EXPERIENCE AT SPILLS

1985 ◽  
Vol 1985 (1) ◽  
pp. 421-427 ◽  
Author(s):  
J. A. Nichols ◽  
H. D. Parker
Keyword(s):  
Laboratory Tests ◽  
Oil Spills ◽  
Practical Experience ◽  
Field Trials ◽  
Field Conditions ◽  
Published Data ◽  
Methods Of Application

ABSTRACT Laboratory tests can demonstrate the effectiveness of dispersants relatively easily but it is far more difficult to assess effectiveness in field conditions. In many oil spills, timely application of dispersants is the best approach. It is therefore necessary to study their use in field trials and actual incidents to see what lessons can be learned about the amounts used relative to the amount of oil spilled, types of oil on which dispersants are relatively effective, methods of application, the period after release into the sea during which dispersants remain effective, and the influence of sea conditions and temperatures. This paper discusses these questions, reviewing published data on the performance of dispersants infield trials and in actual oil spills in which staff of the International Tanker Owners Pollution Federation Ltd. have been involved in recent years. Recommendations are made regarding further work in the laboratory and field that appears necessary to determine the conditions under which dispersants are likely to be most effective.

scholarly journals Assessment of Quality and Reliability of Measurements with XBT Sippican T5 and T5/20

2018 ◽  
Vol 35 (10) ◽  
pp. 1935-1960 ◽  
Author(s):  
Franco Reseghetti ◽  
Lijing Cheng ◽  
Mireno Borghini ◽  
Igor M. Yashayaev ◽  
Giancarlo Raiteri ◽  
...  
Keyword(s):  
Laboratory Tests ◽  
World Ocean ◽  
Field Trials ◽  
Matched Pairs ◽  
Temperature Profiles ◽  
Fall Rate ◽  
Ocean Climate ◽  
The World ◽  
Quality And Reliability ◽  
Climate Study

AbstractThe T5 expendable bathythermographs reach the greatest depth within the current XBT family. Since the early 1970s, in several areas they have been providing a significant part of available temperature profiles below 1000 m and therefore represent an important resource for ocean climate study. In this paper we present new results from laboratory tests of Sippican T5 and T5/20 probes and analyses of more than 350 XBT–CTD matched pairs from our own field trials and the World Ocean Database (WOD), and we propose an improved fall rate equation (coefficients: A = 6.720 ± 0.025 m s−1, B = 0.001 60 ± 0.000 15 m s−2, Offset = 1.00 ± 0.65 m). Possible influences of probe physical characteristics and initial launch conditions on the probe motion have also been investigated with launching height and probe weight being identified as important factors. Analyses also confirm that fall speed and pure temperature error increase with water temperature, as previously reported for other XBT types. The uncertainties in depth and temperature measurements are then calculated. Finally, a new correction for a global T5 dataset is proposed, with an update of the currently available schemes.

scholarly journals Mechanical Design and Development of the RB211 Dry Low Emissions Engine

1993 ◽  
Author(s):  
Alan H. Summerfield ◽  
David Pritchard ◽  
Dave W. Tuson ◽  
David A. Owen
Keyword(s):  
Laboratory Tests ◽  
Computer Modelling ◽  
Mechanical Design ◽  
Reverse Flow ◽  
Water Injection ◽  
Field Trials ◽  
Modular Construction ◽  
Lean Burn ◽  
System A ◽  
Design Analyses

To meet current and proposed worldwide emissions regulations without recourse to steam or water injection, the Industrial RB211 is being upgraded with a premix lean burn series staged combustion system. To incorporate this system a reverse flow cannular concept was adopted. This design retains the inherent proven modular construction and is suitable for retrofit. This paper discusses the mechanical design analysis undertaken to ensure integration of the chosen solution into the RB211. Theoretical studies, combustion laboratory tests, aerodynamic scale and full size laboratory tests, together with extensive computer modelling were used to ensure the timely achievement of this design study. To verify the design analyses a detailed full power test programme is in place, which is to be followed by field trials with a pre-production engine during 1993.

Assessing Surface Engineering Solutions for Oilfield Scale; Correlating Laboratory Tests to Field Trials

2016 ◽  
Author(s):  
Mohammad Mohsen Vazirian ◽  
Thibaut T. J. Charpentier ◽  
Anne Neville ◽  
Felipe Batista Alvim ◽  
Mônica de Oliveira Penna
Keyword(s):  
Laboratory Tests ◽  
Surface Engineering ◽  
Field Trials
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