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Articles 1 - 16 of 16
Full-Text Articles in Physical Sciences and Mathematics
User-Interface Coding For The Cern/Geant Nuclear Physics Program, David L. Roetzel, Wilfred J. Braithwaite
User-Interface Coding For The Cern/Geant Nuclear Physics Program, David L. Roetzel, Wilfred J. Braithwaite
Journal of the Arkansas Academy of Science
Explanations will be given of the various user-written routines required by the Monte Carlo detector-modeling program GEANT, developed by CERN, the European Organization for Nuclear Research. User-written routines must be linked with the CERN library to accomplish the researcher's intentions. Examples will illustrate how GEANT passes information to subprograms needed to model events. Various data structures used by GEANT library calls and included in each user routine, are similarly illustrated. Both computational-speed and memory-size limitations need to be factored into the construction of a simulation model. This will constrain the calls used in the user-written routines. Examples are provided of …
Monte Carlo Director Modeling And Display, Using The Cern Laboratory, Christine A. Byrd, Charles M. Byrd, Wilfred J. Braithwaite
Monte Carlo Director Modeling And Display, Using The Cern Laboratory, Christine A. Byrd, Charles M. Byrd, Wilfred J. Braithwaite
Journal of the Arkansas Academy of Science
Detectors for high energy nuclear physics experiments are being modeled using programs developed and maintained at CERN, the European Organization for Nuclear Research. These programs include data handling and display routines, as well as those using random-sampling Monte Carlo techniques to calculate energy depositions for high energy particles as they pass through the various parts of the detector system. The complete CERN library has been imported for use with our Workstation computers in a multiple user environment. The enormous CERN Monte Carlo program GEANT(French for GIANT) tracks the progress of a particle through a detector on a simulated event-by-event basis. …
Ichthyofauna Of The Village Creek System, Anthony Holt, George L. Harp
Ichthyofauna Of The Village Creek System, Anthony Holt, George L. Harp
Journal of the Arkansas Academy of Science
Village creek is a lowland stream lying in the Mississippi Embayment in Randolph, Lawrence and Jackson counties in northeastern Arkansas. The stream has been channelized in Randolph and Lawrence counties as have most of its tributaries. The Jackson County portion of the stream has not been channelized. Twelve sites were sampled seasonally by seining along Village Creek and its tributaries. In addition to seasonal work, six sites were sampled from one to three times each by several methods. A total of 8000 specimens was collected by all means used (7754 at seasonal sites and 246 at supplemental sites). Forty-two species …
Environmental Analysis Of The Caddo River And Its Tributaries: Comparison Of Water Quality During 1992 With 1974-75, Kelly L. House, Jimmy D. Bragg, Clark Kuyper, T. Kent Thomas, C. Renn Tumlison
Environmental Analysis Of The Caddo River And Its Tributaries: Comparison Of Water Quality During 1992 With 1974-75, Kelly L. House, Jimmy D. Bragg, Clark Kuyper, T. Kent Thomas, C. Renn Tumlison
Journal of the Arkansas Academy of Science
Environmental data related to water quality of the Caddo River and its tributaries were collected from March - October, 1992, and compared with data from August, 1974 - May, 1975. Bacterial, chemical and physical parameters were investigated at six river locations and thirteen tributary sites. Ammonia, nitrates, soluble phosphorus, turbidity and fecal coliform were significantly lower, and sodium and potassium were significantly higher in 1992 than during the previous study. Bacterial loading exceeded EPA criteria at some locations during both studies.
Effects Of Domestic Wastewater Effluent On The Water Quality And Aquatic Macroinvertebrates In A Sharp County, Arkansas Stream, Linda E. Moss, George L. Harp
Effects Of Domestic Wastewater Effluent On The Water Quality And Aquatic Macroinvertebrates In A Sharp County, Arkansas Stream, Linda E. Moss, George L. Harp
Journal of the Arkansas Academy of Science
The purpose of this study was to determine whether the effluent of the Ash Flat Wastewater Treatment Plant changes the water quality or aquatic macroinvertebrate community structure of North Big Creek. Weekly water samples were analyzed for pH, N, P, COD, TSS and fecal coliform bacteria from 17 June to 19 August 1992. Aquatic macroinvertebrates were collected biweekly using a Turtox Indestructible™ Dip Net, and density indices were calculated. Station 1, above the effluent, was a spring habitat. Fecal coliform, N, P, TSS and COD values were higher at this station, while the aquatic macroinvertebrate community was relatively simple. The …
Determination Of Hammett Pyridine 3-Aza And 4-Aza Replacement Constants By 1h Nmr Studies Of Amide Systems, Frank L. Setliff, Nikhil G. Soman, Alan D. Toland
Determination Of Hammett Pyridine 3-Aza And 4-Aza Replacement Constants By 1h Nmr Studies Of Amide Systems, Frank L. Setliff, Nikhil G. Soman, Alan D. Toland
Journal of the Arkansas Academy of Science
Values for Hammett pyridine 3-aza and 4-aza replacement constants were obtained by correlation of the amide proton chemical shifts (in DMSO) of some N-(3-pyridyl)-and N-(4-pyridyl)-dichloronicotinamides, benzamides and acetamides with those of their N-(substituted phenyl) amide analogs using standard Hammett a values
Sinkhole Excavations In Peccary Cave, Newton County, Arkansas, Kenneth M. Ball, Leo Carson Davis
Sinkhole Excavations In Peccary Cave, Newton County, Arkansas, Kenneth M. Ball, Leo Carson Davis
Journal of the Arkansas Academy of Science
No abstract provided.
Suppression Of The Oxidation Of S(Iv) In Rainwater, David M. Chittenden Ii
Suppression Of The Oxidation Of S(Iv) In Rainwater, David M. Chittenden Ii
Journal of the Arkansas Academy of Science
No abstract provided.
S-H Stretching Frequencies In Ruthenium Mercaptan Complexes And The Crystal And Molecular Structures Of [Cpru(Pph3)2(S-C4h, Haengsoon Park, David Minick, Mark Draganjac, Joey W. Crump, A. W. Cordes, Elizabeth M. Holt
S-H Stretching Frequencies In Ruthenium Mercaptan Complexes And The Crystal And Molecular Structures Of [Cpru(Pph3)2(S-C4h, Haengsoon Park, David Minick, Mark Draganjac, Joey W. Crump, A. W. Cordes, Elizabeth M. Holt
Journal of the Arkansas Academy of Science
No abstract provided.
Time Projection Chamber's Efficiency, Obtained Using Cern's Geant Code, Christine A. Byrd, Charles M. Byrd, Wilfred J. Braithwaite
Time Projection Chamber's Efficiency, Obtained Using Cern's Geant Code, Christine A. Byrd, Charles M. Byrd, Wilfred J. Braithwaite
Journal of the Arkansas Academy of Science
Geometrical acceptance and reconstruction of tracks have been carried out for a Time Projection Chamber (TPC) used in Experiment NA35: the 35th experiment in the North Area of the Super Proton Synchrotron (SPS), located at the European Organization for Nuclear Research (CERN). NA35 used the SPS at CERN to produce 6.4 TeV beams of 32S for central collisions with Au nuclei. The TPC modeling effort used a modified version of CERN's Monte Carlo program GEANT, which simulates the response of the NA35 TPC to output from CERN's primary event generators. GEANT was used to simulate three-dimensional pixel data in the …
Larval Chironomids Of The St. Francis Sunken Lands In Northeast Arkansas, Betty G. Cochran, Edmond J. Bacon Jr., George L. Harp
Larval Chironomids Of The St. Francis Sunken Lands In Northeast Arkansas, Betty G. Cochran, Edmond J. Bacon Jr., George L. Harp
Journal of the Arkansas Academy of Science
Sixty semi-annual collections (August 1987-July 1988) were made from 30 stations by sampling each station twice for 1.5 man-hours with an aquatic dipnet. Larval chironomids were mounted on slides and identified at 400-1000 magnifications using a Leitz Dialux 20 EB microscope. A survey of the aquatic macroinvertebrates of the St. Francis Sunken Lands in northeast Arkansas revealed 36 taxa of Order Diptera, Family Chironomidae. The taxa were used to evaluate the general health of the aquatic environment. Stations that were located within the least disturbed areas, which were old river channels and oxbows, contained the highest number of organisms and …
Ultraviolet Spectra Of Acetic Acid, Glycine, And Glyphosate, J. Scott Mcconnell, Rose M. Mcconnell, Lloyd R. Hossner
Ultraviolet Spectra Of Acetic Acid, Glycine, And Glyphosate, J. Scott Mcconnell, Rose M. Mcconnell, Lloyd R. Hossner
Journal of the Arkansas Academy of Science
The influence of pH on the ultraviolet spectra of 0.001, 0.005, and 0.010 M glyphosate, glycine, and acetic acid was investigated. Each dilution of each acid was adjusted to acidic, neutral, and basic pH values. Ultraviolet spectra were recorded from 300 to 200 nm for each acid-dilution-pH combination. The wavelength of maximum absorption (Lambdamax) of glyphosate and glycine was slightly higher in the high pH solutions than in the neutral and low pH solutions. The Lambdamax of acetic acid was apparently unaffected by changes in ph. Molar extinction coefficients (epsilon) at Lambdamax increased with pH for all three acids. Regression …
Three Year Study On A Cypress-Tupelo Swamp In Independence County, Arkansas, Veryl V. Board, Andrea Reeves, Charlotte Allen
Three Year Study On A Cypress-Tupelo Swamp In Independence County, Arkansas, Veryl V. Board, Andrea Reeves, Charlotte Allen
Journal of the Arkansas Academy of Science
No abstract provided.
Ichthyofauna Of A Cypress-Tupelo Swamp, Veryl V. Board, Charlotte Allen, Andrea Reeves
Ichthyofauna Of A Cypress-Tupelo Swamp, Veryl V. Board, Charlotte Allen, Andrea Reeves
Journal of the Arkansas Academy of Science
No abstract provided.
Rapid Reduction Of Nitrate Ion In Rain Water, David M. Chittenden Ii
Rapid Reduction Of Nitrate Ion In Rain Water, David M. Chittenden Ii
Journal of the Arkansas Academy of Science
No abstract provided.
Microscale Preparation Of Pyrocatechol: The Use Of Sodium Percarbonate In The Dakin Reaction, T. Evans Yamazaki, Dominic T.C. Yang
Microscale Preparation Of Pyrocatechol: The Use Of Sodium Percarbonate In The Dakin Reaction, T. Evans Yamazaki, Dominic T.C. Yang
Journal of the Arkansas Academy of Science
No abstract provided.