Digital Commons Network^™

Total Nitrogen Concentrations In Wastewater Treatment Plant Effluent In The Great Bay Estuary Watershed In 2008, Philip Trowbridge

PREP Reports & Publications

Nitrogen enrichment is a growing concern for the Great Bay Estuary. For the 2006 State of the Estuaries report (NHEP, 2006), the NHEP calculated the nitrogen load from wastewater treatment facilities (WWTF) using data on total dissolved nitrogen in WWTF effluent in 2002 from Bolster et al. (2003). The NHEP needs to update this indicator for the 2009 State of the Estuaries report. Not only is more recent data needed but also measurements of total nitrogen are needed to avoid assumptions about the ratio of dissolved to total nitrogen. Therefore, the NHEP allocated staff time to collect effluent samples from …

Design And Development Of A Prototype For A Web-Based Interface For Online Material For Tanzanian Youth, Mjema A.M

Tanzania Journal of Engineering and Technology (TJET)

A prototype of a web-based interface for an online database was developed to be used by youth organizations in Dar-es-Salaam. A participatory approach involving secondary students in the identification of user interface requirements, in designing and testing the prototype was used. A questionnaire was designed and manned in seven secondary schools in Dar-es-Salaam to estimate the Internet usage. Interviews were conducted to countercheck the questionnaire responses. The interview and the questionnaire helped to come up with a set of user requirements for the web-based interface of an online information search. From the specifications of the user requirements the author was …

Joint Fire Science Program – Lake Mead National Recreation Area: Revegetating Burned Arid Lands: Identifying Successful Native Species Using Trait And Competition Analysis, Quarterly Progress Report, October 1 — December 31, 2008, Margaret N. Rees

Fire Science

• Presented poster at Natural Areas Conference in Nashville, TN

• Initiated granivory study at Goodsprings.

• Outplanted 2376 plants for Experiment 1 at Lake Mead nursery.

• Presented poster at Wildfires and Invasive Plants in American Deserts conference in Reno, NV.

• Submitted manuscript covering our distance from road - microsite invasibility study to Journal of Arid Environments.

Limnological Assistance For The Lake Mead National Recreation Area In Meeting The Challenge Of The Water 2025 Initiative: Quarterly Report, Period Ending December 31, 2008, Margaret N. Rees

Limnological Studies

Project 1: Technical input has been provided at four advisory team meetings attended this quarter.

Project 2: A formal report titled, Surface Water Monitoring for Indicator Bacteria in High-use Sites of the Lake Mead National Recreation Area, has been prepared; an accompanying poster presentation for the Lake Mead Science Symposium is in preparation.

Project 3: A draft document titled, “Interagency Monitoring Action Plan (I-MAP): Quagga Mussels in Lakes Mead and Mohave” has been presented to an interagency core group to review and input. Six oral presentations related to quagga mussels are in preparation by this group for the Lake Mead …

Lake Mead National Recreation Area Vegetation Monitoring And Analysis: Quarterly Progress Report, October 1, 2008 To December 31, 2008, Margaret N. Rees

Vegetation Monitoring

Executive Summary

• The Weed Sentry program surveyed over 62 miles of federal land by vehicle and foot in Clark County for incipient populations of exotic plants.
• New weed monitoring botanists and botany assistant joined the staff during this period.
• Vegetation staff presented four presentations at the Natural Areas Association annual conference in Nashville, TN and eight poster presentations at the “wildfires and invasive plants in American deserts” meeting in Reno, NV.
• Several new Brassica tournefortii experiments were initiated.

Lake Mead National Recreation Area Monitoring And Evaluation Of Sensitive Wildlife: Quarterly Progress Report, Period Ending December 31, 2008, Margaret N. Rees

Wildlife Monitoring

Project 1. Relict Leopard Frog Monitoring, Management, and Research

• All milestones and deliverables associated with the MSHCP project are on schedule
• Completion of 2008 monitoring survey efforts
• Coordination is ongoing to identify potential translocation sites, including assisting efforts to identify a potential site in the western Grand Canyon
• RLFCT meeting hosted and minutes of meeting drafted
• Annual report provided to RLFCT, final draft in review
• Sampling for the amphibian chytrid fungus conducted at many sites

Project 2. Bald Eagle Winter Monitoring and Evaluation

• All MSHCP milestones and deliverables are on schedule
• Planning and coordination of the 2009 Eagle Count conducted …

Letter From The Editor-In-Chief, Charles G. Jeane

University of the District of Columbia Law Review

No abstract provided.

Who Should Appoint Judges Of The D.C. Courts?, Charles A. Miller

University of the District of Columbia Law Review

Since 1970, the District of Columbia court system has been comprised of the District of Columbia Court of Appeals and the Superior Court of the District of Columbia.' From the time of the establishment of the District, judges of its courts have been appointed by the President of the United States, acting on the advice of the Attorney General. When the general issue of District home rule came before Congress in the 1960s, one of the subjects considered was the judicial appointment process. In 1970, the District of Columbia Court Reform and Criminal Procedure Act 2 continued the Presidential appointment …

The Systemic Nature Of Action Learning Programmes, G Mwaluko

Tanzania Journal of Engineering and Technology (TJET)

A lot of attention has been paid on action learning in the last four decades or so and the success of such programmes has also been widely publicized. But why have these programmes been so effective in helping organizations cope with change? Many authors state that the success of such programmes is due to the fact that they link learning to actions. Yet others claim that action learning programmes succeed because they involve employee empowerment and provide a much greater learning curve. In this paper the authors hold that action learning programmes succeed because they are partly systemic and can …

Analytical Modeling Of A Large Local Area Network - Part I: Internet Traffic Characterization, Mathew Luhanga

Tanzania Journal of Engineering and Technology (TJET)

The goal of both IP network operators and the end users is to get the highest performance from the system for a given cost. This makes Performance a key criterion in the design, procurement, and use of computer and communication systems. In order to address problems associated with performance degradation of operational communications systems, over the last decade, traffic engineering techniques have emerged in an attempt to optimize communication systems’ performance and ensure more efficient use of their resources. One of these techniques is analytical modeling. Analytic performance models are an excellent tool for quickly evaluating the performance of operational …

Reference Database Usage Statistics 2007-2008

Technical Services Reports and Statistics

Statistics on the use of online reference databases at the University of Rhode Island during the period from July 2007 through June 2008. Includes COUNTER-compliant data on sessions, searches, turnaways, full text articles downloaded, cost per search, and other metrics.

Improving The Design Of Low Volume Sealed Roads In Tanzania, Mfinanga A

Tanzania Journal of Engineering and Technology (TJET)

The main objective of the study was to identify appropriate road designs for Low Volume Sealed Roads (LVSRs) with the aim of improving the design of such roads in Tanzania. The study was conducted in Dar es Salaam and Morogoro regions in Tanzania where data for LVSRs were collected from primary and secondary sources in the two regions. The study found that by using an improved pavement design method specifically meant for LVSRs results in cost savings for LVSRs of up to 51% compared with the conventional method of pavement design in Tanzania. The study recommends that the pavement design …

Integrated Remote Sensing And Gis Techniques For Groundwater Exploration In Semi-Arid Region: A Case Of Karamoja Region – Uganda, Lubang Nobert

Tanzania Journal of Engineering and Technology (TJET)

Groundwater is a precious resource that covers wide geographical extent. Proper evaluation is required in order to ensure prudent use of groundwater resources. The current groundwater assessment in Karamoja region, as in many parts of the world, uses Apparent Resistivity and Vertical Electrical Sounding, which has limited coverage to some localized usually predetermined areas. Comprehensive groundwater development program needs a wide area coverage and large volume of multidisciplinary data. In the present study, an integrated remote sensing and GIS based methodology is developed and tested for the evaluation of groundwater resources of Karamoja Sub Region, Northeastern Uganda. The components of …

The Effect Of Rotation And Temperature On The Inhibition Performance Of Cashew (Anacardium Occidentale L.) Nut Shell Liquid On Co2 Corrosion Of Carbon Steel, J Mutasingwa

Tanzania Journal of Engineering and Technology (TJET)

A natural extract of cashew nut shells, Cashew Nut Shell Liquid (CNSL) was investigated as a corrosion inhibitor for carbon steel in 3% NaCl solutions saturated with CO2 gas using electrochemical techniques (i.e. potentiodynamic polarization and ac-impedance). The investigation was performed at different temperatures under static and dynamic conditions using a Rotating Disk Electrode (RDE). It was found that CNSL reduces the electrochemical processes taking place on carbon steel undergoing corrosion. The percentage inhibitor efficiency increases with increase in CNSL concentration and decreases with rise in temperature. Better performance at low CNSL concentration was registered under dynamic conditions and room …

Potential Use Of Waterguard As A Disinfectant For Domestic Water Use, Yohana L

Tanzania Journal of Engineering and Technology (TJET)

been identified as an alternative method for treatment of domestic drinking water. The aim of this study was to investigate the effectiveness of Water Guard in disinfecting drinking water from different sources drawn from Kinondoni district, Dar es Salaam as well as to establish appropriate dosage that can be used during the treatment. Results showed that, a dose of 4.0mL per 20 litrer of water guard is sufficient for disinfection of urban water sources. The above prescribed doses provide 100% disinfection efficiency with residue chlorine of less than 0.3mg/l. Water with turbidity values of 30-35 NTU, chlorine dosage of 8mL/20 …

Investigation Of The Effect Of Particle Size On Groundnut-Oil Solvent Extraction, S Manyele

Tanzania Journal of Engineering and Technology (TJET)

An investigation of the effect of particle size on the performance of vegetable oil recovery by solvent extraction is reported. Experiments were conducted using soxhlet extractor, groundnuts and n-hexane. Samples were grouped into mean particle sizes of 0.25, 0.75, 1.3, 3.3, and 7.5 mm using standard sieves. The effect of particle size was studied for extraction time intervals of 1, 2, 3, 4, 5 and 8 hours. The oil yield, oil recovered per kg solvent used, kg solvent lost per unit time, and the rate of extraction (kg oil recovered per hour) decreased with increasing particle size. Meanwhile, the percent …

Front Matter

Journal of Digital Forensics, Security and Law

No abstract provided.

Masthead

Journal of Digital Forensics, Security and Law

No abstract provided.

Back Matter

Journal of Digital Forensics, Security and Law

No abstract provided.

Original Curriculum For Encouraging Meaningful Community Service In High School Students, Elizabeth H. Naylor

Critical and Creative Thinking Capstones Collection

In this paper I have explored the importance of community service experiences and ultimately created a guide for implementing a high quality and meaningful community service program at the high school level. This paper begins with an initial discussion of my personal experiences in New Orleans after Hurricane Katrina, when I discovered firsthand the importance of personal reflection and sharing. I have defined community as a group of people with common place and common interest. Community service is an action within the community that betters the community in some way. The reader will find examples of communities coming together to …

Effects Of Rotational Grazing On Rodents And Raptors In A Coastal Grassland, Matthew D. Johnson, Christa M. Horn

Western North American Naturalist

We conducted a 4-year experiment to assess the impacts of rotational cattle grazing on rodents and raptors in a mesic coastal grassland in northwestern California. Live-trapping indicated that rodent abundance declined by 69% on the grazed area and increased by 14% on the ungrazed area. Raptor use of the grazed area declined by 15% and increased on the ungrazed area by 63%. Measures of giving-up density indicated that rodents perceived a 25% higher predation risk on grazed area than on ungrazed area, but raptor hunting surveys indicated that risk of depredation from raptors was 2.5 times lower in the grazed …

Optimal Temperatures For Growth And Upper Thermal Tolerance Of Juvenile Northern Leatherside Chub, Eric J. Billman, Eric J. Wagner, Ronney E. Arndt, Erin Vandyke

Western North American Naturalist

We examined optimal temperatures for growth and the upper thermal tolerance of juvenile northern leatherside chub (Lepidomeda copei). We conducted 2 experiments using the acclimated chronic-exposure method to estimate optimal temperature for growth of age-0 northern leatherside chub (range 12.8–28.3 °C). Upper thermal tolerance was estimated using the critical thermal maximum (CTM) and upper incipient lethal temperature (UILT) methods for fish acclimated at 15, 18, 23, and 28 °C. We also measured stream temperatures in Yellow Creek, Summit County, Utah, during July–August 2006 to compare our results to actual summer stream temperatures. Survival in growth tests was not …

"Pando" Lives: Molecular Genetic Evidence Of A Giant Aspen Clone In Central Utah, Jennifer Dewoody, Carol A. Rowe, Valerie D. Hipkins, Karen E. Mock

Western North American Naturalist

While clones of trembling aspen (Populus tremuloides, Michx.) in the Intermountain West of North America are expected to be large, one putative genet in central Utah, identified from morphological evidence, has garnered particular attention for its size, even gaining the nickname "Pando" (Latin for "I spread"). In order to determine if a single genetic individual coincides with the morphological boundary of "Pando," we sampled 209 stems on a 50-m grid throughout the putative clone for analysis at 7 microsatellite loci. We have identified a single genetic entity concurrent with that described from morphological characteristics. Spatial analyses indicate that the …

Water Stress And Hybridization Between Quercus Gambelii And Quercus Grisea, Nathan G. Swenson, Jeanne M. Fair, Jeff Heikoop

Western North American Naturalist

The historical and environmental forces involved in determining the geographic location of plant hybrid zones have long been of interest. Often hybrid zones appear to be intimately tied to the environment, yet because many abiotic factors covary it is often difficult to understand which are truly the most important in maintaining the position and structure of a hybrid zone. This study uses empirical data and modeling analyses to examine whether abiotic factors are responsible for the location and structure of an oak (Quercus) hybrid zone and, if so, which factors are the most important. Specifically, leaf trait measurements …

Diet And Sexual Dimorphism Of The Desert Iguana, Dipsosaurus Dorsalis, From Sonora, Mexico, Christopher J. Dibble, Geoffrey R. Smith, Julio A. Lemos-Espinal

Western North American Naturalist

We examined the diet and sexual dimorphism of the desert iguana, Dipsosaurus dorsalis, from Sonora, Mexico. The diet consisted primarily of vegetation, with insect material contributing little to the overall volume of the diet. Plant matter was restricted to leaves and seeds. Animal prey consisted mostly of ants, termites, and beetles. Males and females did not differ significantly in snout–vent length, head length, or head width. These results confirm that in general D. dorsalis is herbivorous and not sexually dimorphic through much of its range.


Examinamos la dieta y dimorfismo sexual de la Iguana del Desierto, Dipsosaurus dorsalis, en Sonora, …

New Distributional Records Of The Red Squirrel (Tamiasciurus Hudsonicus) In Western New Mexico And Evidence For Its Extirpation From The Zuni Mountains, Jennifer K. Frey

Western North American Naturalist

In the American Southwest, the red squirrel (Tamiasciurus hudsonicus) occurs as disjunct populations in coniferous forests on mountaintops. There is a paucity of information concerning the species' distribution and habitat in western New Mexico. I report new records that document and verify the occurrence of red squirrels in additional montane areas in west central New Mexico, including the Mangas Mountains, Canovas Rim, Turner Mountain, Tularosa Mountains, Elk Mountains, Bearwallow Mountain, and Pinos Altos Mountains. I also report observations of red squirrels from an atypical habitat—low-elevation riparian forests. These new records suggest that the geographic distribution of the species …

Unnatural Landscapes: Tracking Invasive Species By Ceiridwen Terrill, Howard O. Clark Jr.

Western North American Naturalist

No abstract provided.

Volume 46, Number 19: December 31, 2008, University Of North Dakota

University Letter Archive

No abstract provided.

Effective Implementation Of Emission Control Area Towards Cleaner Shipping Operations : Focusing On Sulphur Oxides (Sox) Emission Reducation, Fajar Nugraha

World Maritime University Dissertations

No abstract provided.

An Analytical Review Of The Treatment Of Seafarers Under The Current Milieu Of The International Law Relating To Maritime Labour And Human Rights, Maria R. S. B. Hubilla

World Maritime University Dissertations

No abstract provided.