Digital Commons Network^™

Effect Of Culturing Time And Hormonal Combinations On Organogenesis Of Date Palm (Phoenix Dactylifera L., Cv. Khnazi) In Vitro, Helal Homaid S. Al-Kaabi

Theses

Date palm (Phoenix dactylifera L.) monocotyledon dioecious tree is one of the most important fruit crop trees in the Arabian Gulf region in general and in the UAE in particular.

Date palm is propagated sexually by seeds or vegetative by offshoots. Seed propagation is not appropriate for commercial production because of the high genetic heterozygosity, which resulted in not true-to-type male and female seedlings. The vegetative propagation utilizing offshoots is slow and inefficient for rapidly growing demands of the date industry. Therefore, it seems essential to use plant tissue culture techniques for propagating and producing date palms.

The present …

Growth And Performance Of Some Forage And Landscape Species Directly Irrigated With Saline Water, Mohammed Abdul Muhsen Ali Salem

Theses

This work aimed to study the growth and physiological performance of SIX forage and

landscape species grown in Nahshalah farm , Zayed International Agricultural and Environmental Research Program Among these species 4 mangrove plants were first Introduced to U. A. E cli mate and soils In addition, Acacia ampliceps and Atriplex amnicola The study covered 1- 7 years plants were irrigated With 25 ppt . Saline water. The study investigated also the changes in the soil chemical characteristics and mineral composition during the 1 -9 years direct irrigation with saline water

The growth performance was measured based on the sufficient …

Self-Similarity In A Multi-Stage Queueing Atm Switch Fabric, Adam Lange-Pearson

Theses

Recent studies of digital network traffic have shown that arrival processes in such an environment are more accurately modeled as a statistically self-similar process, rather than as a Poisson-based one. We present a simulation of a combination sharedoutput queueing ATM switch fabric, sourced by two models of self-similar input. The effect of self-similarity on the average queue length and cell loss probability for this multi-stage queue is examined for varying load, buffer size, and internal speedup. The results using two self-similar input models, Pareto-distributed interarrival times and a Poisson-Zeta ON-OFF model, are compared with each other and with results using …

Evaluating The 1931 Cie Color Matching Functions, Mark Shaw

Theses

The use of colorimetry within industry has grown extensively in the last few decades. Central to many of today's instruments is the work of the CIE system, established in 1931. Many have questioned the validity of the assumptions made by Wright (1928-29) and Guild (1931), some suggesting that the 1931 color matching functions are not the best representation of the human visual systems' cone responses. A computational analysis was performed to evaluate the 1931 color matching functions against other responsivity functions using metameric data. The underlying principle is that an optimal set of responsivity functions will yield minimal color difference …

An Examination Of The Self-Perceptions Of The Physical Environment And Psychological Health Of Latina Women Living In The St. Columbia Neighborhood Of Newark, New Jersey, Veronica Maria Maya

Theses

A correlation between perceptions of environmental quality and psychological health has been established in a sample of Latina women. Three psychological scales exist to measure psychological constructs such as learned helplessness, hopelessness, and selfesteem. These three scales have been used in conjunction with an environmental survey designed to capture the perceptions of the sample to their physical environment.

The mean of scores for each psychological construct in the Latina sample were compared to the mean of scores for these constructs in independent samples of oncology, hemodialysis, and spinal cord injured patients being treated for depression. This comparison yields the following …

Study Of Reactive Media For Chromium Removal From Groundwater By Permeable Barriers, Hemant S. Desai

Theses

The purpose of the study was to select reduction media for application in permeable barriers for removing chromate ions from groundwater emanating from chromium refining sites in New Jersey. The high pH condition of groundwater in such sites is expected to pose limitations on the use of metallic iron (Fe⁰) as the sole reductive medium.

Reasonable reduction kinetics was achieved using iron at pH < 9.2. Several pH lowering media were investigated and were found to have either very slow or very fast dissolution kinetics, which rendered them impractical for use in passive permeable barriers. Two other media, namely: pyrite and siderite minerals have shown promising results, but fell short of achieving the required performance. Detailed investigation of interfacial processes in a batch reactor have shown that the addition of a small amount of a neutral salt can significantly improve chromate reduction kinetics, even at high pH conditions around 10.9.

The formation of passivating layers, which can slowdown the reaction significantly, was found to be important at high pH conditions. It is recommended that an injection system be used with the reactive barrier to …

Development Of Icejet Machining Technology, Dimitri V. Shishkin

Theses

This work was concerned with the application of ice powder for material processing. Material cutting and surface cleaning were also studied. As a result, innovative cleaning and etching technology was pioneered. The corresponding technology was designed and demonstrated.

The study involved investigation of water freezing, crushing of generated ice, ice transportation, formation of ice water and ice air streams and, finally, use of this stream for material cutting and cleaning. The theoretical work included investigation of the phase change in water and ice formation, effect of ice temperature on particles behavior and entrainment of ice particles by the water stream. …

Sustainable Green Manufacturing Of Energetic Materials, Ted Alex Formeza

Theses

Pollution from manufacturing processes of the major energetic materials currently used in the U.S., 1,3,5-trinitro-1,3,5-triazacyclohexane (RDX), 1,3,5,7-tetranitro-1,3,5,7 tetraazacyclooctane (HMX) was briefly evaluated. It was found that acetic acid was a major pollutant. It appeared that the British Process could be controlled to reduce the polluting effluents better than the Bachmann Process used in the U.S. Most of the effort for producing the next generation of energetic materials is currently centered around the production of 1,3,3-trinitroazetidine (TNAZ). We evaluated five synthetic routes for producing TNAZ. We reduced the number of potential processes by carefully considering possible changes in the schemes that …

Fundamentals Of Dry Coating In Fluidized Bed, Rakesh Iyer

Theses

This thesis is devoted to the study of a novel dry coating method in fluidized bed - Dry Coating of Particles in Spouted bed (DCPS). The main objectives of this work were to study the feasibility of the process, both quantitatively and qualitatively, and to compare the results with coating by conventional mechanical mixing. Aerosol mechanics is applied to account for the following: 1) collision between the guest and host particles in a spouted bed (analysis of guest-host particle inertial fluid-dynamic interaction), and 2) to show how collision efficiency of guest particles with host particles affects the coating efficiency. An …

Multi-Lifecycle Assessment Design Tools And Software Development, Ji Jin

Theses

This thesis introduces the concept of Multi-lifecycles and a Multi-lifecycle assessment (MLCA) methodology for evaluating the energy consumption and environmental emissions of a product. MLCA quantifies materials, energy, and environmental burdens associated with end-of-life options, as well as obtains the value of returning parts and materials back to use, through demanufacturing, reengineering and remanufacturing.

A Multi-lifecycle Assessment software is developed as a tool to implement MLCA methodologies. By this software, one can practice a full life-cycle analysis on a product, or compare the environmental impacts of different products. Detailed designs on MLCA software including the databases, user interfaces, and algorithm …

Coagulation And Disinfection By-Products Formation Potential Of Dissolved Organic Matter Fractions, Neeraj S. Pipada

Theses

Both the proposed United States Environmental Protection Agency (USEPA) Disinfectants- Disinfection By-Products and Enhanced Surface Water Treatment rules have provisions for minimizing the formation of undesirable precursors of disinfection by-products (DBPs) in drinking water Natural Organic Matter (NOM) contains many of the precursors to the DBPs formed following disinfection of drinking water. DAX-8 resin procedures were used to isolate and fractionate NOM into six dissolved organic matter (DOM) fractions; Hydrophobic acid (FA), base (FB), neutral (FN), and hydrophilic acid (PA), base (PB) and neutral (PN). Aluminum sulfate (alum) jar coagulation tests were performed to determine the optimum coagulation ranges of …

Assessing The Impact Of Design For Environment Guidelines : A Case Study Of Office Telephones, Hussam Fawzi Al-Okush

Theses

This research addresses a fundamental question: How much of the improvement in a product's environmental performance is directly attributable to the Design for Environment (DFE) tools and guidelines, and how much results simply from other design objectives or enabling technologies? The research examines four generations of a business telephone over the last thirty years, including the current generation, which has been designed using DEE guidelines. A lifecycle assessment (LCA) and demanufacturing analysis were performed on each of the first three generations to determine various technology and non-DEE trends. This information was used to forecast the progression to a 1997 non-DEE …

Design And Engineering Of A Tensile Fabric Structure, Jairo Rios

Theses

Fabric structures are designed in an iterative process between architect and engineer, analysis input and output, and detail and patterning. There are three main steps in designing a fabric structure: shape finding, loading, and patterning/ detailing.

Shapefinding consists of finding the shape of the fabric where the fabric forces are in equilibrium. This type of structure is geometrically nonlinear which require iterative analysis to converge on a unique solution.

The loading of the structure is similar to that of any conventional structures. The departure is in the major effects that suction and ponding have on fabric surfaces.

Usually the details …

Decision Support System For Forecasting Product And Waste Disposal Over Time, Amit P. Amte

Theses

A current barrier to the end-of-life product strategies is a lack of knowledge of the quantity and timing of product returns or waste generation. Consequently, a Decision Support System (DSS), to predict the timing and quantity of waste generation is needed. Therefore a web-based system that predicts the rate of product entering the waste-stream has been developed. The system accepts information relating to sales, reliability, storage and disposal behavior. This data is used to simulate the return waste flow. The DSS can be used to simulate the effect of different policies and to provide data for end-of-life and multi-lifecycle strategy …

History Of Oxygenated Gasoline Use In New Jersey 1992-1998, Jean Niebuhr Borne

Theses

New Jersey has been required to use oxygenated gasoline from November 1 to March 30 since 1992 in order to reduce carbon monoxide from vehicles. This requirement was part of the Clean Air Act Amendments of 1990. For the past six winters, New Jersey has utilized gasoline with methyl butyl tertiary ether, MTBE, as the oxygenate. In New Jersey, and in many states across the country, health complaints were reported after oxygenated fuel started flowing from gas pumps.

Oxybusters is a grassroots organization dedicated to the removal of oxygenated gasoline off the market. The group has pressured Governor Whitman to …

Effect Of Postural Tilt On The Autonomic Nervous System In Gulf War Veterans, Shrenik Dagli

Theses

Time-frequency signal representations characterize signals over a joint time-frequency plane. They combine time-domain and frequency-domain analysis to yield a potentially more revealing picture of the temporal localization of a signal spectrum. Time-frequency distributions (TFDS) of signals map a one-dimensional function of time, x (t), into a two-dimensional function of time and frequency, p(t, f). Most TFDs are "time-varying representations' which are similar conceptually to a musical score with time running along one axis and frequency along the other axis.

Many Gulf War Veterans complained of symptoms like unexplainable tiredness. This condition is known as the Gulf War Syndrome. The purpose …

Vibration Control Of Ultra-High Precision Magnetic Leadscrew Using Recurrent Neural Network, Bhaskar Vinayak Dani

Theses

Ultra-high precision positioning is of strategic importance to modern industrial processes such as semiconductor manufacturing. Traditional drives with mechanical transmission elements exhibit nonlinearities such as friction, backlash and hysteresis which limit the system performance significantly. The magnetic leadscrew in this work belongs to the class of contactless drives which overcome the above mentioned limitations of contact-type drives. The operation is based on leadscrew/nut coupling but unlike mechanical Ieadscrews, the threads of the nut and the leadscrew are aligned magnetically and do not come in contact. Thus, "hard" nonlinearities are substantially reduced resulting in high precision and high resolution.

The dynamics …

In Situ Enhancement Of Well Recovery By Pneumatic Media Injection, Michael Thomas Galbraith

Theses

The objective of this thesis was to develop a new process for enhancing recovery wells at hazardous waste sites. The process, known as an extended radius well (ERW), involves injection of ceramic beads directly into groundwater plumes to create drainage paths for liquid contaminants. This is a variant of Pneumatic Fracturing, which is a patented in situ remediation process developed to increase permeability of soil and rock formations by injection of high pressure gas.

The research study comprised laboratory investigations, engineering scale tests, and a field pilot demonstration. The laboratory investigations examined the properties of several candidate media to determine …

Development Of An Ion Source For Implantation Of Decaborane, Ravidath Gurudath

Theses

Future generations of Si technology will require ultra shallow junctions (tens of nm) in the drain and source regions of MOS transistors. Fabrication of such shallow p-type junctions requires implantation of boron at ultra low energies (≡1keV), below the limits of standard ion implantation technology. A proposed solution involves implantation of B₁₀H_X⁺ ions in which boron atoms carry less than 10% of the beam energy. Thus shallow implantation may be possible with standard ion implanters operating at tens of kV.

This thesis is a part of the feasibility study of this novel technology. The ionization of …

Vibration Control On Linear Robots With Digital Servocompensator, Roger Kobla Kwadzogah

Theses

Control application for active damping of structural vibrations and acoustic noise in mechanical systems is one of the engineering fields that can benefit from advances made in digital signal processors. This thesis project is one such application. It is about a vibration control at the loading point of a high speed linear robotic workcell. A lead zirconate titanate piezoelectric ceramic is used as the actuator and an accelerometer provides the sensing. From experimentally measured frequency response of this system, a shaping filter is designed and added on. The reshaped system is fitted with a third order transfer function design model. …

Thermodynamic And Kinetic Analysis On Cl.+Rci -- Cl2+R.Reactions, Ch3cjo+O2= Products And Cjcho+O2= Products, Jongwoo Lee

Theses

Thermodynamic Parameters, ΔH°_f(298), S°₍₂₉₈₎ and Cp(T) are evaluated for C₁ and C₂ chlorocarbon molecules and radicals. These thermodynamic properties are used in evaluation and comparison of R.+ Cl₂ => R-Cl + Cl. (defined forward direction) reaction rate constants from the kinetics literature. Data from some 20 reactions in the literature show linearity on a plot of Ea_fwd vs. ΔH_rxn,fwd, yielding a slope of (0.38 ± 0.04) and intercept of (10.10 ± 0.77) kcal/mole. Thermodynamic properties (ΔH°₍₂₉₈₎, S°₍₂₉₈₎ and Cp(T) from 300 to 1500 K) for reactants, adducts, transition …

Dual Frequency Bi-Othogonally Polarized Antennas For Gps Applications, Anand Arun Mahale

Theses

Dual frequency bi-orthogonally polarized antenna to be used in Global Positioning System applications operating in Li (1575.42 ± 10.23 MHz) and L2 (1227.60 ± 10.23 MHz) Bands has been studied. To ensure compatibility with existing applications, the antenna size is limited in dimensions to 4.120" x 4.680" x 1.250" including the radome. Orthogonally placed two dual frequency probe excited patches were designed using a high dielectric constant substrate (ε r = 9.8 and thickness of 250 mils, Rogers TMM10i material) to obtain vertical and horizontal polarization for each band. The measured performance of this antenna showed good agreement with the …

In Situ Aortic Root In Vitro Testing Of The Stented And Stenless Porcine Aortic Heart Valves, Sean Parker

Theses

Background - The stent, Delrin® support frame, for porcine heart valves has been blamed for reduced durability of these valves due to the additional stress caused by the relative stiffness of the stent. There is a tendency among surgeons to do away with the stent in the aortic position and use porcine stentless valves which are sewn directly in the aortic position after removing diseased valve. These stentless valves are extremely difficult to test and no appropriate holder has been designed for this purpose. New approach for in vitro testing of these valves has been developed at Sheihigh, Inc., Millburn …

Analysis And Modeling Of Ultrasound To Decontaminate Heavy Metals In Dredged Sediments, Ruvini Perera

Theses

Sediments contaminated with heavy metals due to past disposal practices threatens the environment and requires remediation. This research is an attempt to develop a technology to decontaminate heavy metals in the dredged sediments with an integrated set of processes using ultrasound. Acoustic cavitation caused by ultrasound energy can be used to remove chromium from the sediments. Two coupled processes were used to treat both coarse (Process#1) and fine (Process#2) fractions of the sediments. Full factorial experimental designs were carried out to evaluate the treatment technique and to statistically model and optimize the processes. The model for Process#1 had four contributing …

Development Of A Context-Specific Search Engine, An Executive Information System, And A Novel Www Ready External Cost Model, Amit V. Revankar

Theses

NJPIES is associated with Information Ecology and Sustainability, a holistic approach to environmental data collection, compilation, integration and provision that puts people, not technology, at the center of the environmental information world.

The first main goal of this project was to develop an algorithm and associated computer-based tool that could perform a lifecycle cost analysis for a model system. The application developed solved the primary problem associated with the lifecycle cost analysis of a product: it accounted for all costs (e.g., environmental costs such as ecological costs and health costs associated with emissions) of the activity. A lifecycle cost analysis …

Computer Simulation Of Cerebrovascular Responses During Induced Hypotension, John A. Schalago

Theses

The purpose of this project was to develop a computer model of cerebrovascular hemodynamics interacting with a pharmacodynamic drug model to examine the effects of three commonly used anti-hypertensive drugs upon intracranial pressure and cerebral blood flow. The model is used to predict cerebrovascular response during the administration of commonly used anti-hypertensive agents.

The mathematical model of intracranial hemodynamics is a seven compartment constant volume system. A series of resistances relate blood and cerebrospinal fluxes to pressure gradients between compartments. Arterial, venous and tissues compliance are included. Autoregulation is modeled by transmural pressure-dependent arterial-arteriolar resistance. The effects of three drugs …

Oodini 2.0 : An Enhances Graphical Schema Representation For Object-Oriented Database, Kamil Shahab

Theses

The graphical representation of object-oriented database (OODB) schemas is useful for The designers and users of a database system. The aim of our project was to enhance the existing version of OOdini, an interactive graphical tool for editing OODB schema. The new features include interactive modification and description of objects in the schema. Data structures for representing classes and attributes have been altered to incorporate object/data types as well as a descriptive string. The software has been implemented using ObjectMaker, a toolkit to design your own methodology using the ObjectMaker Extension Language.

Digital Library Development : A Case Study Of New Jersey's Virtual Academic Library Environment Project, Paulette Joan Talbot

Theses

Students could become aggressive users of digital libraries and electronically distributed information. This paper shall give background of digital libraries in general and of New Jersey's Virtual Academic Library Environment, VALE, specifically. It shall emphasize research into the dynamics of user and organizational aspects of VALE member organization performance in framing a direction of libraries in the state for years to come. Does the academic libraries of VALE focus on value added to information resources in the academic arena or are the potential users their primary focus?

Catalyctic Reduction Of Nitric Oxide By Copper Catalyzed Granular Activated Carbon In The Presence Of Oxygen, Shan Xiao

Theses

The catalytic reduction of nitric oxides by solid carbonaceous material consisting primarily of granular activated carbon or (GAC) was studied in a fix bed catalytic reactor in order to develop the technology for removing NO and soot simultaneously from diesel engine exhaust. The catalytic activity and conversion of NO as a function of reaction temperature was evaluated as a function of space velocity. The results show that at lean condition and high gaseous hourly space velocity, vis., 50,000 ~ 80,000, Cu-ZSM-5 does not perform as well with CO and GAC as it does with gaseous hydrocarbons(HC). Plain GAC has low …

Recasting Cohn's Many Sorted Logic Into A Constrained Logic, Christopher Brendan Koelbl

Theses

The use of a many sorted logic for theorem proving carries many advantages over a traditional unsorted logic. By placing restrictions on the search space, a many sorted logic can significantly reduce the amount steps in the resolution process. However, as a logic becomes more efficient, it increases in complexity.

One of these efficient log ics is Cohn's Many Sorted Logic, LLAMA. It uses complex data structures such as the sort lattice and sort arrays to maintain information about the sorts. Recasting LLAMA into Bürckert's constrained logic will keep the functionality of LLAMA while using a format that reduces the …