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Articles 201601 - 201630 of 249416
Full-Text Articles in Life Sciences
Ec95-819 Estate Planning For Farm And Ranch Families: Information For Your Legal And Tax Advisers, Paul H. Gessaman
Ec95-819 Estate Planning For Farm And Ranch Families: Information For Your Legal And Tax Advisers, Paul H. Gessaman
University of Nebraska-Lincoln Extension: Historical Materials
This is one in a series of Cooperative Extension publications providing information and background for estate planning by persons operating Nebraska's farms and ranches. Titles of documents in the series are listed at the end. Reading the documents in this series will improve your understanding of estate planning tools and alternatives, and will make it easier to communicate with your attorney, accountant, and other helpers when your estate plan is prepared.
Genetic Structure Of Mosquitofish Populations In The Altamaha And Ogeechee Drainages Of Georgia: Reporting An Undescribed Form In The Ocmulgee River, Jose D. Hernandez-Martich, James M. Novak, Michael H. Smith, Paul E. Johns
Genetic Structure Of Mosquitofish Populations In The Altamaha And Ogeechee Drainages Of Georgia: Reporting An Undescribed Form In The Ocmulgee River, Jose D. Hernandez-Martich, James M. Novak, Michael H. Smith, Paul E. Johns
Faculty Research & Creative Activity
An electrophoretic survey of genetic variation in mosquitofish populations of the Altamaha and Ogeechee drainages in Georgia revealed significant divergence (fs,=O.270) among populations within the Altamaha. Cluster analysis showed two lineages: one formed by populations from the Ogeechee drainage and the eastern and central Altamaha branches and another consisting of populations from the Ocmulgee River, the westernmost branch of the Altamaha drainage. These lineages may represent two independent forms. Average modified Rogers’ genetic distance was 0.25% between the two groups. The O_cmulgee lineage had significantly higher multilocus heterozygosity (H=0.206) than the other one (I-/=0.120). The high heterozygosity in the Ocmulgee …
Environmental Contamination Is A Major Contributor To Prevalence Of Serpulina Hyodysenteriae Infection Of Swine On Farms Medicating Against Swine Dysentery, Gerald Duhamel, K. J. Christiansen, R. J. Bernard, R. O. Elder, Michelle R. Mathiesen, Scott Hygnstrom
Environmental Contamination Is A Major Contributor To Prevalence Of Serpulina Hyodysenteriae Infection Of Swine On Farms Medicating Against Swine Dysentery, Gerald Duhamel, K. J. Christiansen, R. J. Bernard, R. O. Elder, Michelle R. Mathiesen, Scott Hygnstrom
Nebraska Swine Reports
Swine dysentery is a highly contagious diarrheal disease of growing and finishing swine causing estimated losses of more than $2.4 million monthly to Iowa pork producers.
The spiral-shaped spirochete bacterium, Serpulina hyodysenteriae, is routinely identified by bacteriologic culture of intestinal specimens of swine affected with the disease. Specific differentiation of S. hyodysenteriae from other bacteria normally present in the intestines of swine is now possible with the use of a nucleic acid-based test developed by scientists in the Department of Veterinary & Biomedical Sciences at UN-L. The test can detect very low numbers of S. hyodysenteriae directly in the …
Index Selection For Components Of Litter Size, David Casey, Tom Rathje, Rodger K. Johnson
Index Selection For Components Of Litter Size, David Casey, Tom Rathje, Rodger K. Johnson
Nebraska Swine Reports
Pigs per sow per year has gradually, but steadily, increased in the U.S. during the last 15 to 20 years. More efficient use of better maternal breeds and lines, crossbreeding systems that efficiently utilize heterosis, and improved management and diets are causes for most of this improvement.
Genetic selection to further increase reproductive traits such as litter size and litter weaning rate has recently been implemented and may explain some of the increase in sow productivity in the latter years. However, efficient programs to improve sow reproduction have not been in place long enough to cause much change in the …
Elevation Of Plasma Fsh With A Low Level Of Fsh-P During The Early To Mid Follicular Phase Blocks The Loss Of Greater Numbers Of Medium Follicles In Control Line Gilts Compared To Gilts Selected For High Ovulation Rate, Hui-Wen Yen, Steve Christian, Dwane Zimmerman
Elevation Of Plasma Fsh With A Low Level Of Fsh-P During The Early To Mid Follicular Phase Blocks The Loss Of Greater Numbers Of Medium Follicles In Control Line Gilts Compared To Gilts Selected For High Ovulation Rate, Hui-Wen Yen, Steve Christian, Dwane Zimmerman
Nebraska Swine Reports
The number of follicles ovulated (ovulation rate) at estrus is an important determinant of litter size in the pig because it sets the upper limit for litter size.
Ovulation rate is a moderately heritable trait in pigs (h2 = 40%). Gilts selected for high ovulation rate (Relax Select, RS line) in the University of Nebraska Gene Pool population ovulated about 3.5 more follicles than randomly selected Control (C) line gilts after nine generations of selection. This difference continues to be maintained after many generations of random selection following the end of deliberate selection.
Utilization Of Twin Screw Cold Extrusion To Manufacture Restructured Chops From Lower-Valued Pork, Wesley Osburn, Roger W. Mandigo, Paul Kuber
Utilization Of Twin Screw Cold Extrusion To Manufacture Restructured Chops From Lower-Valued Pork, Wesley Osburn, Roger W. Mandigo, Paul Kuber
Nebraska Swine Reports
Restructured meat products are commonly manufactured by using lower-valued meat trimmings reduced in size by comminution (flaking, chunking, grinding, chopping or slicing). The comminuted meat mixture is mixed with salt and water to extract salt-soluble proteins. These extracted proteins are critical to produce a “glue” which binds muscle pieces together. These muscle pieces may then be reformed to produce a “meat log” of specific form or shape. The log is then cut into steaks or chops which, when cooked, are similar in appearance and texture to their intact muscle counterparts.
Estimation Of Pork Trim Composition By Electromagnetic Scanning, N. L. Meseck, B. L. Gwartney, Chris R. Calkins
Estimation Of Pork Trim Composition By Electromagnetic Scanning, N. L. Meseck, B. L. Gwartney, Chris R. Calkins
Nebraska Swine Reports
The value of pork trim depends on its lean content. Accurate assessment of composition is necessary for proper pricing. Procedures often used to estimate composition lack accuracy and require time, thus a rapid, accurate, non-invasive technology to determine lean content of pork trim is needed.
Electromagnetic scanning, also known as ToBEC (total body electrical conductivity), has been studied for prediction of lean in hams (see 1994 Swine Report, p. 8). The equipment consists of a stainless steel cabinet containing a large, plastic-covered coil, through which meat is conveyed. Energy is absorbed from the electromagnetic field by the sample. Because lean …
Snake River Sockeye Salmon Habitat And Limnological Research, David Teuscher, Doug Taki, Wayne A. Wurtsbaugh
Snake River Sockeye Salmon Habitat And Limnological Research, David Teuscher, Doug Taki, Wayne A. Wurtsbaugh
Watershed Sciences Faculty Publications
Historically, thousands of Snake River Sockeye salmon returned to the Sawtooth Valley to spawn. Evermann (1896) reported that the Sawtooth Valley Lakes were teeming with red fish. Bjornn (1968) estimated that 4,360 sockeye returned to Redfish Lake in 1955. These numbers no longer exist. In the 1980's, less than 50 . Snake River sockeye salmon survived to spawn (Bowler 1990). Since 1990, only 14 sockeye have returned. Because of recent declines, the Shoshone-Bannock Tribes (SBT) petitioned the National - Marine Fisheries Service (NMFS) to list · Snake River sockeye as endangered. As a result, Snake River sockeye were listed and …
Utah's Grazing Lands: Sustaining A Vital Resource, Utah State University Extension
Utah's Grazing Lands: Sustaining A Vital Resource, Utah State University Extension
All Archived Publications
No abstract provided.
Complete Guide To Home Canning, Utah State University Extension
Complete Guide To Home Canning, Utah State University Extension
All Archived Publications
No abstract provided.
Guide 6, Preparing And Canning Fermented Foods And Pickled Vegetables, Utah State University Extension
Guide 6, Preparing And Canning Fermented Foods And Pickled Vegetables, Utah State University Extension
All Archived Publications
No abstract provided.
Guide 7, Preparing And Canning Jams And Jellies, Utah State University Extension
Guide 7, Preparing And Canning Jams And Jellies, Utah State University Extension
All Archived Publications
No abstract provided.
Home Storage Of Wheat, Ralph E. Whitesides
Home Storage Of Wheat, Ralph E. Whitesides
All Archived Publications
No abstract provided.
12 Steps To Successful Canning, Unknown Unknown
12 Steps To Successful Canning, Unknown Unknown
All Archived Publications
This factsheet gives 12 steps to follow in order to can foods successfully.
A Lesson Plan For Teaching Accounting For The Home Using Quicken 8.0, Larry K. Bond
A Lesson Plan For Teaching Accounting For The Home Using Quicken 8.0, Larry K. Bond
All Archived Publications
No abstract provided.
Thermoluminescence Of Zircon, Philibert Iacconi
Thermoluminescence Of Zircon, Philibert Iacconi
Scanning Microscopy
The thermoluminescence (TL) of synthetic zircons into which some impurities have been individually insert-ed is investigated. The results obtained show that, after X-irradiation at 77K, the synthetic zircons present three kinds of thermoluminescent emissions. The first is related to the OH- ions, the second is typical of the SiO44-groups, and the third is characteristic of RE3+ ions with RE = Dy, Tb, Gd, Eu, or Sm (RE = rare earth).
The OH- emission is a large band at 285 nm which appears at 115 and 160K.
The SiO44- TL emission consists of …
Advances In Research Of Defects In Quartz Based On Luminescence, A. Halperin
Advances In Research Of Defects In Quartz Based On Luminescence, A. Halperin
Scanning Microscopy
The first part of this paper reviews the observation of the unconventional thermoluminescence {TL(M), where M = Li or Na} peaks observed in the glow curve of Li-and Na-containing quartz, and describes the full solution of the puzzling effect of the TL(M) peaks which needed a two irradiation procedure for their formation. Of interest is the intermediate warming (IW) method, which consisted of two irradiations and warming of the sample to 150-300 K between the two irradiations. This was explained as follows: the first low temperature irradiation produces {AlO4/M/h}+ centers, when the now loosely bound M ions …
Surface Recombination Velocity And Bulk Carrier Lifetime Measurement Of Silicon Crystals By Using Photoluminescence Time Decay, Karsten Thölmann, Masakazu Yamaguchi, Akihiro Yahata
Surface Recombination Velocity And Bulk Carrier Lifetime Measurement Of Silicon Crystals By Using Photoluminescence Time Decay, Karsten Thölmann, Masakazu Yamaguchi, Akihiro Yahata
Scanning Microscopy
The time decay for photoluminescence (PL) emitted from silicon crystals has been used to obtain both bulk carrier lifetime (Tb) and surface recombination velocity (S). Experimental results were interpreted with the assumptions that the sample was under a low-excitation condition and that the ratio of radiative to non-radiative recombination rates was constant throughout the carrier decay process. Analysis was applied to several wafers covered with different kinds of silicon dioxide (SiO2). The results indicate that PL time decay measurement is effective to obtain the values of Tb and S.
Luminescence From Semiconductor Quantum Wires, Quantum Dots, And Monolayer Quantum Wells: Bottleneck And Localization Issues, C. M. Sotomayor Torres, P. D. Wang, N. N. Ledentsov, Y. -S. Tang, H. Qiang, F. H. Pollak, H. F. Ghaemi, B. B. Goldberg
Luminescence From Semiconductor Quantum Wires, Quantum Dots, And Monolayer Quantum Wells: Bottleneck And Localization Issues, C. M. Sotomayor Torres, P. D. Wang, N. N. Ledentsov, Y. -S. Tang, H. Qiang, F. H. Pollak, H. F. Ghaemi, B. B. Goldberg
Scanning Microscopy
Semiconductors nanostructures are fabricated using a range of techniques which inevitably have an impact in the resulting optical properties. Multilayers are grown by epitaxial techniques with a varying degree of uniformity in thickness, composition, etc., all leading to localisation effects in two-dimension. These multilayers are patterned to fabricate wires and dots using, in this case, electron beam lithography and dry etching. The fabrication steps contribute to modifications of the optical properties, beyond the expected purely confinement-related effects.
An overview of linear and modulation spectroscopy is presented to demonstrate the impact of fabrication steps as well as of lateral confinement upon …
Multi-Laboratory Results For The Cathodoluminescence Emission Spectrum From A Synthetic Zircon Standard, John M. Hanchar, Donald J. Marshall
Multi-Laboratory Results For The Cathodoluminescence Emission Spectrum From A Synthetic Zircon Standard, John M. Hanchar, Donald J. Marshall
Scanning Microscopy
The Standards Committee of the Society for Luminescence Microscopy and Spectroscopy (SLMS) circulated doped zircon crystals as a standard for comparison of cathodoluminescence (CL) emission spectra obtained at different laboratories. Eleven laboratories have submitted spectra acquired from this standard. The crystals are synthetic zircons doped with 1.4 wt.% of Dy2O3
The participating laboratories used a variety of CL instrumentation including cold cathode optical micro-scope attachments, hot cathode optical microscope attachments, and EMPA/SEM-based systems. Two laboratories provided both uncorrected and corrected spectra. All other spectra are uncorrected. A variety of different spectrometers/spectrographs and detector systems were used. Photomultiplier …
Structure Of Woody Riparian Vegetation In Great Basin National Park, S. D. Smith, K. J. Murray, F. H. Landau, A. M. Sala
Structure Of Woody Riparian Vegetation In Great Basin National Park, S. D. Smith, K. J. Murray, F. H. Landau, A. M. Sala
Life Sciences Faculty Research
The community composition and population structure of the woody riparian vegetation in Great Basin National Park are described. Community analyses were accomplished by sampling 229 plots along an elevational gradient of 8 major stream systems in the Park. TWINSPAN analysis identified 4 primary species groups that were characterized by Populus tremuloides (aspen), Abies concolor (white fir), Rosa woodsii (Woods rose), and Populus angustifolia (narrowleaf cottonwood) as dominants, respectively. Detrended Correspondence Analysis (DECORANA) showed that the most important environmental factors associated with the distribution of species were elevation and slope, with flood-related physiographic factors having a secondary effect. Analysis of size-class …
Where The Sky Began, James W. Ruwalt
Where The Sky Began, James W. Ruwalt
United States Fish and Wildlife: Staff Publications
"My own feeling for tallgrass prairie is that of modem man fallen in love with the face in a faded tintype. Only the frame is still real; the rest is illusion and dream. So it is with the original prairie. The beautiful face of it had faded before I was born, before I had a chance to touch and feel it, and all that I have known of the prairie is the setting and mood-that broad sky of pure and intense light, with a sort of loftiness to the days, and the young prairie-born winds running past me from open …
On-Line Cursive Korean Character Recognition By Using Curvature Models, Chang-Soo Kim, Byung Hwan Jun, Moo Young Kim, Woo Seong Kim, Jaihie Kim
On-Line Cursive Korean Character Recognition By Using Curvature Models, Chang-Soo Kim, Byung Hwan Jun, Moo Young Kim, Woo Seong Kim, Jaihie Kim
Electrical and Computer Engineering Faculty Research & Creative Works
A cursive Korean character consists of several Korean alphabets where connection is present within and among the alphabets. Recognition of Korean characters can be carried out by splitting each character into smaller primitives. Small line segments can be used as the primitives. But this approach requires too much processing time, for there can be many candidate references to be matched to one input character and each reference usually consists of too many primitives. In this paper, we propose an approach using structural curvature models to overcome the difficulties of using small line segments. These models are obtained by segmenting the …
Trace Element Concentrations In Water, Sediment And Biota From Pathfinder National Wildlife Refuge, Natrona And Carbon Counties, Wyoming, Pedro Ramirez Jr., Kimberly Dickerson, Mary Jennings
Trace Element Concentrations In Water, Sediment And Biota From Pathfinder National Wildlife Refuge, Natrona And Carbon Counties, Wyoming, Pedro Ramirez Jr., Kimberly Dickerson, Mary Jennings
United States Fish and Wildlife: Staff Publications
Pathfinder National Wildlife Refuge (Pathfinder NWR), located in Natrona and Carbon Counties, is 50 miles southwest of Casper, Wyoming. Pathfinder NWR, established in 1936, is a refuge and breeding area for migratory waterfowl. The refuge initially encompassed the entire Pathfinder Reservoir, an impoundment of the North Platte River. In 1965, the U.S. Fish and Wildlife Service reduced it to four smaller units to allow more intensive management: the Sweetwater Arm, Goose Bay Unit, DeWeese Creek Unit, and the Sage Creek-Platte Unit. We collected water, sediment and biota samples for trace element analyses in May, June and July 1993 from wetlands …
Substratum-Associated Microbiota, Nancy Tuchman, Christopher G. Peterson
Substratum-Associated Microbiota, Nancy Tuchman, Christopher G. Peterson
School of Environmental Sustainability: Faculty Publications and Other Works
No abstract provided.
Importation Of Shellfish From Outside The Coastal Waters Of Virginia, William D. Dupaul
Importation Of Shellfish From Outside The Coastal Waters Of Virginia, William D. Dupaul
Reports
No abstract provided.
Activation Of Transfer Rna-Guanine Ribosyltransferase By Protein Kinase C, Rana C. Morris, Bonnie J. Brooks, Panayota Eriotou, Deborah F. Kelly, Sandeep Sagar, K. Lenore Hart, Mark S. Elliot
Activation Of Transfer Rna-Guanine Ribosyltransferase By Protein Kinase C, Rana C. Morris, Bonnie J. Brooks, Panayota Eriotou, Deborah F. Kelly, Sandeep Sagar, K. Lenore Hart, Mark S. Elliot
Chemistry & Biochemistry Faculty Publications
Transfer RNA-guanine ribosyltransferase (TGRase) irreversibly incorporates queuine into the first position in the anticodon of four tRNA isoacceptors. Rat brain protein kinase C (PKC) was shown to stimulate rat liver TG Rase activity, TGRase preparations derived from rat liver have been observed to decrease in activity over time in storage at -20 or -70°C, Contamination of the samples by phosphatases was indicated by a p-nitrophenylphosphate conversion test, The addition of micromolar concentrations of the phosphatase inhibitors sodium pyrophosphate and sodium fluoride into TGRase isolation buffers resulted in a greater return of TGRase activity than without these inhibitors, Inactive TGRase preparations …
Unstable And Stable Classifications Of Scombroid Fishes, Kent E. Carpenter, Bruce B. Collette, Joseph L. Russo
Unstable And Stable Classifications Of Scombroid Fishes, Kent E. Carpenter, Bruce B. Collette, Joseph L. Russo
Biological Sciences Faculty Publications
Many cladists believe that a classification should strictly reflect a cladistic hypothesis. Consequently, they propose classifications that often differ markedly from existing ones and are potentially unstable due to phylogenetic uncertainty. This is problematic for economically or ecologically important organisms since changing classifications can cause confusion in their management as resources. The classification of the 44 genera of scombroid fishes (the mackerels, tunas, billfishes, and their relatives) illustrates this problem of instability. Previous cladistic analyses and analyses presented in this paper, using different data sets, result in many different cladistic hypotheses. In addition, the inferred cladograms are unstable because of …
Impacts Of Irrigation Development On Anadromous Fish In The Yakima River Basin, Washington, Robert L. Tuck
Impacts Of Irrigation Development On Anadromous Fish In The Yakima River Basin, Washington, Robert L. Tuck
All Master's Theses
Prior to Euroamerican development, the Yakima River Basin was a major producer of salmon. Total runs of approximately 800,000 have declined to 3,000-5,000, or less than 1% of original run size. Three species are extinct in the basin, including summer chinook, coho, and sockeye.
Irrigation development, including the construction of unscreened diversions, the blockage of spawning and rearing habitat by reservoir dams, and the dewatering of spawning and rearing habitat, began in the mid-1800's and today totals approximately 500,000 acres. Historical records provide a wealth of information documenting irrigation development and its consequences on anadromous fish populations.
Interaction Of Diffuse Competition And Insect Herbivory In Limiting Brittle Prickly Pear Cactus, Opuntia Fragilis (Cactaceae), Jutta C. Burger, Svata M. Louda
Interaction Of Diffuse Competition And Insect Herbivory In Limiting Brittle Prickly Pear Cactus, Opuntia Fragilis (Cactaceae), Jutta C. Burger, Svata M. Louda
Svata M. Louda Publications
We tested the effects of above- and below-ground competition and evaluated insect herbivory on the growth of a common cactus (Opuntia fragilis) in Sandhills prairie. Our purpose was to determine the independent and joint contribution of these factors to the variation observed in cactus size and local abundance. We manipulated ambient prairie vegetation and surface water availability in a full factorial design. When Opuntia fragilis was released from competition with surrounding vegetation, it grew significantly larger in the second growing season, both in terms of number and size of new cladodes. Ramets grown within live prairie vegetation averaged …