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University of Arkansas, Fayetteville
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
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Articles 1 - 13 of 13
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Application Of Cross-Linked Rice Starches As Drug Delivery Matrices In Monolithic Tablets, Christopher F. Peluso, Fernanda O. Onofre, Ya-Jane Wang
Application Of Cross-Linked Rice Starches As Drug Delivery Matrices In Monolithic Tablets, Christopher F. Peluso, Fernanda O. Onofre, Ya-Jane Wang
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
The sustained release properties of regular and waxy rice starches and their derivatives were studied in tablets. The starches were cross-linked to different levels with epichlorohydrin, and the sustained release properties, swelling power, and rheological characteristics of the matrices prepared were determined. Propranolol hydrochloride was used as a model drug. The sustained release properties of waxy rice starch improved with increasing cross-linking levels, whereas cross-linking had little impact on the functionality of regular rice starch matrices. There was an increase in swelling power for both regular and waxy rice starches as cross-linking levels increased. Both starches showed an increase in …
E-85 Vs. Regular Gasoline: Effects On Engine Performance, Fuel Efficiency, And Exhaust Emissions, Jordan W. Steinhaus, Donald M. Johnson, George W. Wardlow
E-85 Vs. Regular Gasoline: Effects On Engine Performance, Fuel Efficiency, And Exhaust Emissions, Jordan W. Steinhaus, Donald M. Johnson, George W. Wardlow
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
This study compared the performance, fuel efficiency, and exhaust emissions of a 2.61 kW engine fueled with regular unleaded gasoline (87 octane) and an 85% ethanol blend (E85) under two load conditions. Four 1-h tests were conducted with each fuel at both governor’s maximum (3400 rpm) and peak torque (2800 rpm) conditions for a total of 16 tests. At governor’s maximum engine speed, there were no significant differences (p>0.05) between fuels for engine torque, power, specific carbon dioxide (sCO2 ), specific carbon monoxide (sCO), specific hydrocarbons (sHC), or specific oxides of nitrogen (sNOX) emissions. However, there was a significant …
Instructions For Authors, Discovery Editors
Instructions For Authors, Discovery Editors
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
No abstract provided.
Effectiveness Of Zinc Given Intra-Nasally Or Orally To Newly Received Stocker Cattle Against Bovine Respiratory Disease And Effects On Growth Performance, Amy Guernsey, Beth Kegley, Jeremy Powell, Doug Galloway, Alicia White, Steve Breeding
Effectiveness Of Zinc Given Intra-Nasally Or Orally To Newly Received Stocker Cattle Against Bovine Respiratory Disease And Effects On Growth Performance, Amy Guernsey, Beth Kegley, Jeremy Powell, Doug Galloway, Alicia White, Steve Breeding
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
Beef calves (n = 88) were purchased from regional auction barns and delivered as a single group. Upon arrival, cattle were assigned to eight pens. Pens were assigned randomly to one of three treatments; two pens received 3 mL of a nasal spray solution (10.8 mg Zn/mL) into each nostril using a single-use nasal atomizer; three pens received 40 mL of an oral drench (16.25 mg Zn/mL), and three pens received no Zn at processing (negative control). Appropriate treatments were administered at processing on d 0 of the 43-d study. After treatment, cattle were worked and housed so they did …
History Of Development And Characterization Of The U.S. Blackberry Market, Thais F. Carvalho, John R. Clark, Michael R. Thomsen
History Of Development And Characterization Of The U.S. Blackberry Market, Thais F. Carvalho, John R. Clark, Michael R. Thomsen
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
The fresh blackberry market within the United States has expanded significantly in the past 10 years based on the development of new cultivars with improved firmness and longer shelf life, permitting their shipment over long distances. Currently, blackberries maintain a nearly continuous presence on the shelves of grocery stores across the U.S., which was uncommon a decade ago. Increased consumption of blackberries is due to increased consumer desire for improved nutrition and diet along with expanded availability. Worldwide, producers have increased production with a 45% increase in area planted from 1995 to 2005. Further expansion has occurred since then. This …
Discovery: The Student Journal Of Dale Bumpers College Of Agricultural, Food And Life Sciences - Volume 10 2009, Several Authors
Discovery: The Student Journal Of Dale Bumpers College Of Agricultural, Food And Life Sciences - Volume 10 2009, Several Authors
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
No abstract provided.
Contents, Discovery Editors
Contents, Discovery Editors
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
No abstract provided.
Letter From The Dean, Lalit Verma
Letter From The Dean, Lalit Verma
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
No abstract provided.
Measurement Of Transient Smoke Emissions From Diesel And Biodiesel Fuel Blends In An Agricultural Tractor, Kristin M. Pennington, Sonia R. Munoz, Donald M. Johnson, George Wardlow
Measurement Of Transient Smoke Emissions From Diesel And Biodiesel Fuel Blends In An Agricultural Tractor, Kristin M. Pennington, Sonia R. Munoz, Donald M. Johnson, George Wardlow
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
Transient smoke emissions pose potential hazards to human health and the environment. With the increased popularity of biodiesel, there is a need to determine if these fuels produce different levels of particulate matter in exhaust emissions. This study examined the transient smoke emissions of three fuels: No. 2 petroleum diesel fuel (D2, ASTM D 975), a blend of 20% biodiesel and 80% petroleum diesel (B20, ASTM 6751), and a 100% pure biodiesel derived from animal fats (B100, ASTM D 6751). Measurements of smoke emissions were taken using the SAE J1677 snap acceleration test procedure on a John Deere 3203 compact …
Correlation Of Calcium And Magnesium Intakes To Frequency Of Muscle Cramps In Female College Athletes, Jennifer Schneider, Marjorie Fitch-Hilgenberg
Correlation Of Calcium And Magnesium Intakes To Frequency Of Muscle Cramps In Female College Athletes, Jennifer Schneider, Marjorie Fitch-Hilgenberg
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
Muscle cramps are involuntary, painful, sudden contractions of skeletal muscles that can cause detrimental effects on athletic performance. Recent data suggest that low intakes of dietary calcium (Ca) and magnesium (Mg) can enhance or cause muscle cramps. The purpose of this study was to determine the correlation between Ca and Mg intakes and muscle cramping in female college athletes. Athletes completed a 24-hour dietary recall and a survey on frequency and location of muscle cramps. Of those surveyed, 8 participated in basketball, 21 in softball, and 10 in gymnastics. Calcium and Mg intakes were calculated from dietary recall data using …
Establishing A Rapid And Effective Method For Screening Salt Tolerance In Soybean, Mioko Tamura, Pengyin Chen
Establishing A Rapid And Effective Method For Screening Salt Tolerance In Soybean, Mioko Tamura, Pengyin Chen
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
Chlorine (Cl) toxicity has been recognized as a constraint for soybean production. Although the use of a Cl-tolerant crop easily solves the problem, current screening methodologies for Cl tolerance are often ineffective because of inadequate means of detecting and measuring plant response to salinity. In order to facilitate the evaluation process and selection of Cl-tolerant genotypes, a study was conducted to develop a rapid and effective method for screening Cl tolerance in soybean. Seeds of five soybean cultivars, each representing either the includer or excluder genotype to salt stress, were grown in a greenhouse in two different growing media (potting …
Processing And Storage Effects On The Polyphenolic Content And Antioxidant Capacity Of Conventional And Sugar-Free Blueberry Jams, Chelsea Castrodale, Luke Howard, Cindi Brownmiller
Processing And Storage Effects On The Polyphenolic Content And Antioxidant Capacity Of Conventional And Sugar-Free Blueberry Jams, Chelsea Castrodale, Luke Howard, Cindi Brownmiller
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
Fresh blueberries have received much attention due to their positive role in human health and disease prevention. The abundance of polyphenolics, namely anthocyanins and procyanidins, is thought to play an important role in health promotion. Due to seasonal availability and limited shelf-life, blueberries are commonly preserved and consumed in various thermally processed forms (jams, juices, canned whole fruit, and purées). Both conventional high sugar and sugar-free blueberry jams are available on the market, but no information is available on how different formulations, processing conditions, and storage of processed jams affect the retention of polyphenolics and antioxidant capacity found in fresh …
Developing Enterprise Budgets For Sustainable School Gardens: Service Learning In A Global Context, Ashley D. Jones, Jennie S. Popp
Developing Enterprise Budgets For Sustainable School Gardens: Service Learning In A Global Context, Ashley D. Jones, Jennie S. Popp
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
Service learning programs are becoming a part of curricula in universities throughout the United States. The University of Arkansas, Fayetteville, (UAF) established a service learning program that targeted the educational, health, social, and agricultural needs of a community. The focus of this research aimed to provide students, faculty, community members, school officials, and students with a template for crop budgets. These crop budgets are used to evaluate the costs and returns of producing multiple crops at a school. Crops produced in a sustainable garden must meet three criteria: 1) have minimal negative environmental impact, 2) provide just-in-time production of quality …