1,297 Works

Relationship between "chloramphenicol reductase activity" and chloramphenicol resistance

Joseph Robert Merkel

The determination of amino nitrogen in plant extracts. Nitrogenousmetabolism in tubers of Solanum tuberosum L.

Neil Wade Stuart

Self-Assembled InAs/GaAs Quantum Dot Solar Cells

Tian Li
Our work focuses on experimental and theoretical studies aimed at establishing a fundamental understanding of the principal electrical and optical processes governing the operation of quantum dot solar cells (QDSC) and their feasibility for the realization of intermediate band solar cell (IBSC). Uniform performance QD solar cells with high conversion efficiency have been fabricated using carefully calibrated process recipes as the basis of all reliable experimental characterization. The origin for the enhancement of the short...

A liming study on nine prominent Maryland soils

John H. Hoyert

EFFECTS OF AGING ON MIDBRAIN AND CORTICAL SPEECH-IN-NOISE PROCESSING

Alessandro Presacco
Older adults frequently report that they can hear what they have been told but cannot understand the meaning. This is particularly true in noisy conditions, where the additional challenge of suppressing irrelevant noise (i.e. a competing talker) adds another layer of difficulty to their speech understanding. Hearing aids improve speech perception in quiet, but their success in noisy environments has been modest, suggesting that peripheral hearing loss may not be the only factor in the...

AN EXPLORATORY INVESTIGATION OF THE ROLES AND RESPONSIBILITIES OF ELEMENTARY AND SECONDARY SCHOOL PRINCIPAL SUPERVISORS

Jane Wallace Spence
ABSTRACT Title of Document: AN EXPLORATORY INVESTIGATION OF THE ROLES AND RESPONSIBILITIES OF ELEMENTARY AND SECONDARY SCHOOL PRINCIPAL SUPERVISORS Jane W. Spence, Doctor of Education, 2015 Directed By: Dr. Margaret McLaughlin, College of Education This study explored elementary and secondary versions of a new principal supervisor role in order to determine whether there might be marked differences in the functions and responsibilities at each level. The new iteration of this role, which is becoming increasingly...

The Issue with Issues Management: An Engagement Approach to Integrate Gender and Emotion into Issues Management

Stephanie Madden
Using sexual assault on college campuses as a context for interrogating issues management, this study offers a normative model for inclusive issues management through an engagement approach that can better account for the gendered and emotional dimensions of issues. Because public relations literature and research have offered little theoretical or practical guidance for how issues managers can most effectively deal with issues such as sexual assault, this study represents a promising step forward. Results for...

Measurement and Simulation of Suppression Effects in a Buoyant Turbulent Line Fire

James Patrick White
An experimental and numerical study of turbulent fire suppression is presented. For this work, a novel and canonical facility has been developed, featuring a buoyant, turbulent, methane or propane-fueled diffusion flame suppressed via either nitrogen dilution of the oxidizer or application of a fine water mist. Flames are stabilized on a slot burner surrounded by a co-flowing oxidizer, which allows controlled delivery of either suppressant to achieve a range of conditions from complete combustion through...

The status of the genus Erysipelothrix

George Curtis Langford

Vibrations of a two span symmetrical beam with an elastic midsupport under the action of a constant, uniformly moving force

Irving Herman Shames

Online Supplement to ‘Myopic Allocation Policy with Asymptotically Optimal Sampling Rate’

Yijie Peng & Michael Fu
This document is the Online Supplement to ‘Myopic Allocation Policy with Asymptotically Optimal Sampling Rate,’ to be published in the IEEE Transactions of Automatic Control in 2017.

Effects of Information and Time of Use Pricing on Irish Electricity Demand and Supply

Shirley Pon
In this dissertation I quantify residential behavior response to interventions designed to reduce electricity demand at different periods of the day. In the first chapter, I examine the effect of information provision coupled with bimonthly billing, monthly billing, and in-home displays, as well as a time-of-use (TOU) pricing scheme to measure consumption over each month of the Irish Consumer Behavior Trial. I find that time-of-use pricing with real time usage information reduces electricity usage up...

Bodies on the Line: Violence, Disposable Subjects, and the US-Mexico Border Industrial Complex

Cristina Jo Perez
Bodies On the Line: Violence, Disposable Subjects, and the Border Industrial Complex explores the construction of identity and notions of belonging within an increasingly privatized and militarized Border Industrial Complex. Specifically, the project interrogates how discourses of Mexican migrants as racialized, gendered, and hypersexualized “deviants” normalize violence against border crossers. Starting at Juárez/El Paso border, I follow the expanding border, interrogating the ways that Mexican migrants, regardless of sexual orientation, have been constructed and disciplined...

EFFECTS OF GRAPE POMACE ON METABOLIC SYNDROME: DIABETES AND OBESITY

Haiwen Li
ABSTRACT Title of Document: EFFECTS OF GRAPE POMACE ON METABOLIC SYNDROME: DIABETES AND OBESITY Haiwen Li, Doctor of Philosophy, 2015 Directed by: Professor Thomas W. Castonguay Department of Nutrition and Food Science Diabetes and obesity are twin epidemics that are closely linked to each other. In the United States, diabetes currently affects approximately 29.1 million adults and children. The estimated economic cost of treating diabetic patients and their related complications reached $245 billion in the...

Further studies on the oxidation products of friedelin

Joseph Sidney Lann

Some socio-geographic factors pertaining to the spread of urbanism in the San Fernando Valley, Los Angeles, California

George Robert Pappas

Growth and fruitfulness of the Blakemore strawberry especially in relation to plant thinning

Julian Coburn Crane

AN ENTROPIC THEORY OF DAMAGE WITH APPLICATIONS TO CORROSION-FATIGUE STRUCTURAL INTEGRITY ASSESSMENT

Anahita Imanian
This dissertation demonstrates an explanation of damage and reliability of critical components and structures within the second law of thermodynamics. The approach relies on the fundamentals of irreversible thermodynamics, specifically the concept of entropy generation due to materials degradation as an index of damage. All failure mechanisms that cause degradation, damage accumulation and ultimate failure share a common feature, namely energy dissipation. Energy dissipation, as a fundamental measure for irreversibility in a thermodynamic treatment of...

DISSOLVED AND GASEOUS FLUXES OF CARBON AND NITROGEN FROM URBAN WATERSHEDS OF THE CHESAPEAKE BAY

Rose Marie Smith
Carbon and nitrogen loading to streams and rivers contributes to eutrophication as well as greenhouse gas (GHG) production in streams, rivers and estuaries. My dissertation consists of three research chapters, which examine interactions and potential trade-offs between water quality and greenhouse gas production in urban streams of the Chesapeake Bay watershed. My first research project focused on drivers of carbon export and quality in an urbanized river. I found that watershed carbon sources (soils and...

Predictors of feelings of depression among Asian American college students

Katie Koo
The purpose of this study is to explore the relationship between various collegiate experiences including substance use, religiosity, campus climate, academic life, social life, self-concept, satisfaction with college, and perceived feelings of depression among Asian American college students compared to other racial groups. Employing Astin’s (1993) I-E-O model, the study utilized the 2008 Cooperative Institutional Research Program (CIRP) the Freshman Survey (TFS) and the follow up College Senior Survey (CSS) in 2012 with the final...

A chemical investigation of ergot of rye

H. L. Greenberg

The botanical erosion control, and economic significance of white poplar in Maryland

Samuel Grober

Dynamic Resource Allocation in Wireless Heterogeneous Networks

Vaibhav Singh
Deployment of low power basestations within cellular networks can potentially increase both capacity and coverage. However, such deployments require efficient resource allocation schemes for managing interference from the low power and macro basestations that are located within each other’s transmission range. In this dissertation, we propose novel and efficient dynamic resource allocation algorithms in the frequency, time and space domains. We show that the proposed algorithms perform better than the current state-of-art resource management algorithms....

An Examination of Parental Engagement During the Middle School Years

Sheila Michelle Jackson
The purpose of this quantitative study was to explore the previously unexamined phenomenon of middle school parental engagement in a large urban/suburban/rural school district of 209 schools in the mid-Atlantic region of the United States. Across 22 middle schools serving grades six-eight, this study collected and examined perceptions of the three key adult stakeholder groups – administrators, teachers, and parents – most actively involved in middle school parental engagement as described within the theoretical framework...

EMBEDDED TWO-PHASE COOLING OF HIGH FLUX ELECTRONICS VIA MICRO-ENABLED SURFACES AND FLUID DELIVERY SYSTEM (FEEDS)

Raphael Kahat Mandel
A novel cooler utilizing thin Film Evaporation on micro-Enabled surfaces and fluid Delivery System (FEEDS) is embedded into silicon die with the goal of achieving the metrics proposed by the Defense Advanced Research Project Agency’s (DARPA) ICECool fundamentals program: a heat flux of 1 kW/cm2 at superheats below 30 K, vapor qualities above 90%, pressure drops below 10% of absolute pressure, and heat densities of 1 kW/cm3. Preliminary models were used to investigate the various...

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