Digital Commons Network^™

Synthesis, Characterization And Antioxidant Activities Of Ni(Ii) Cu(Ii), And Zn(Ii) Complexes Of Substituted 4-Phenyl-1,3,5-Triazine-2,6- Salicylaldimine / Abdulaziz Ali Alomari, Abdulaziz Ali Alomari

Student Works (2010-2019)

Six new Schiff bases were prepared from the reaction of 4-phenyl-1,3,5-triazine-2,6-diamine with 5-chlorosalicyladehyde, 5-bromosalicyladehyde, 5-nitrosalicyladehyde, 3-hydroxysalicyladehyde, 4-hydroxysalicyladehyde, and 3,5-di-tert-butylsalicyladehyde. Each of these Schiff bases were then reacted with Ni(II), Cu(II), and Zn(II) acetates to the corresponding complexes (total 18). The Schiff bases were characterized by elemental analysis (CHN), Fourier transform infrared spectroscopy (FT-IR), 1H- and 13C- nuclear magnetic resonance spectroscopy (NMR), ultraviolet-visible spectroscopy (UV-vis), while the complexes were additionally characterized by CHN, FT-IR, UV-vis and thermogravimetric analysis (TGA). All Ni(II) complexes are octahedral, all Cu(II) complexes are square pyramidal, and all Zn(II) complexes are tetrahedral. The thermal stabilities of Ni(II) …

Chemometric Approaches In The Evaluation Of Trace Metals In Commercially Raised Tilapia And Preliminary Health Risk Assessment Of Its Consumption / Low Kah Hin, Kah Hin Low

Student Works (2010-2019)

The aims of this study are to evaluate the presence of trace metals in aquacultural samples using chemometric methods and to assess the safety of their consumption. In this work, chemometric techniques have been utilized to improve the analysis of metal content in commercially raised tilapia. In the method development phase, multivariate calibration techniques involving principal component regression and partial least squares were employed to establish a simple spectrophotometric method for the simultaneous determination of Cu2+, Ni2+ and Zn2+ in water samples in the presence of 1-(2-thiazolylazo)-2-naphthol as chromogenic reagent. In general, no significant difference in analytical performance was observed …

Astatistical Performance In Dicator In Some Image Processing Problems / Chang Yun Fah, Yun Fah Chang

Student Works (2010-2019)

The ability to compare or relate two digital images may be useful in developing performance evaluation algorithms. This thesis investigates the use of a particular correlation measure, 2 p R developed from the multidimensional unreplicated linear functional relationship (MULFR) model with single slope, as a measure or indicator of performance. This MULFR model is an extended version of the ULFR model introduced by Adcock in 1877. A literature survey was carried out showing that 2 p R has not been used before. The coefficient 2 p R was investigated in its ability to handle the issues of non-perfect reference image, …

Prediction Of Rupture Analysis And Hemodynamic Factors On Abdominal Aortic Aneurysm For Normal And High Blood Pressure Subjects / Muhammad Rusydan Amir Hamzah, Amir Hamzah Muhammad Rusydan

Student Works (2010-2019)

Abdominal aortic aneurysm (AAA) is a bulging and widening of the blood vessel due the weakening of aortic wall which may lead to rupture of aneurysm if it is not treated. Normally, the treatment of AAA is considered if the maximal diameter exceeds around 5-6cm. The increasing of the bulge is proportional to potential of aneurysm rupture. The ultimate goal of the study is to investigate the hemodynamic factors at the AAA region in terms of velocity, pressure and wall shear stress for normal and high blood pressure both at resting and exercise condition. The aneurysm model used in this …

The Effect Of Glass Fibre Post Diameter On The Fracture Resistance Of Endodontically Treated Teeth / Tey Kuan Chuan., Kuan Chuan Tey

Student Works (2010-2019)

Objectives: To determine the effect of glass fibre-reinforced composite (FRC) posts of different diameters on the failure load of endodontically treated teeth with different remaining dentine and reinforcing resin composite (RRC) thicknesses and the mode of failure in each group. Methods: Fifty extracted intact human maxillary central incisors were decoronated 2 mm incisal to buccal CEJ and endodontically treated. The teeth were randomly assigned to one of the five groups (n=10): Group B (Blue), post space prepared with size 0 post drill (Ivoclar Vivadent, Liechtenstein)/size 0 FRC post/no RRC; Group W(White), size 1 post space/size 1 FRC post/no RRC; Group …

Electrical And Dielectric Properties Of Solid And Nanocomposite Polymer Electrolytes Based On Chitosan / Shujahadeen Bakr Aziz, Shujahadeen Bakr Aziz

Student Works (2010-2019)

In solid polymer electrolytes (SPEs) and nano-composite polymer electrolytes (NCPEs) the ion conduction mechanism is still not well understood. This motivates us to study the electrical and dielectric properties of solid polymer electrolytes (CS:AgTf, CS:LiTf and CS:NaTf ) and nano-composite polymer electrolytes ((1-x)(0.9CS:0.1AgTf)-xAl2O3 (0.02 ≤ x ≤ 0.1), (1-x)(0.9CS:0.1NaTf)-xAl2O3 (0.02 ≤ x ≤ 0.1) and (1- x)(0.9CS:0.1LiTf)-xAl2O3 (0.02 ≤ x ≤ 0.1)) based on chitosan. In the present work the SPEs and NCPEs were prepared by the solution cast technique. The XRD results reveal the increase of amorphous fraction in chitosan upon the addition of salts. The UV-vis, TEM, SEM …

Stratigraphy Of The Ransi Member Of The Middle Eocene To Oligocene Tatau Formation In The Tatau-Bintulu Area, Sarawak, East Malaysia / Wong Yien Lim, Yien Lim Wong

Student Works (2010-2019)

A recent study in the Tatau-Bintulu area indicates that the Ransi Member which was originally dated as Upper Miocene to Pliocene (Kamaludin Hassan, 2004) is part of the Upper Eocene to Upper Oligocene Tatau Formation. This finding is inconsistent with that of Liechti, et.al (1960) who proposed that it was equivalent to the Middle to Upper Miocene Begrih Formation while Ismail (2000) proposed that it was equivalent to the Upper Miocene to Pliocene Balingian Formation. The study area is located in a horst bounded by two parallel NE-SW trending faults 4.5 km apart. The gently folded Ransi Member that is …

Syntheses Of Nanoparticles By Wire Explosion Technique / Lee Yen Sian, Yen Sian Lee

Student Works (2010-2019)

Nanoparticles generally refer to particles with sizes less than 100 nm. They exhibit distinguished properties compared to their bulk form due to their small size and high surface-to-volume ratio. Various methods have been developed to fabricate such particles where wire explosion technique is one of them. In brief, wire explosion is realized by allowing a high power pulsed current to pass through a thin wire. The current will provide the energy to vaporize the wire due to the Joule heating effect. The formation of nanoparticles starts when the vaporized wire forms a supersaturated vapour that is followed by nucleation of …

Public Healthcare Facility Planning In Malaysia : Using Location Allocation Models / S. Sarifah Radiah Shariff, Shariff S. Sarifah Radiah

Student Works (2010-2019)

In many developing nations, the locations of public facilities are generally taken locally by government officers or by local elected leaders or by both. In Malaysia, the location of public health care are determined using some guidelines that were developed based on experience or some statistical information. There is still lack of formal analysis being carried out. As a result the decisions can very often be far from optimal. This study attempts to develop some mathematical location-allocation models for the locations of the public health care facilities in Malaysia. Two basic location allocation models with two different objectives are studied: …

Robust Inference In Panel Data Model / Nurul Sima Mohamad Shariff, Nurul Sima Mohamad Shariff

Student Works (2010-2019)

Panel data is a group of many individual units observed for a specific time period. In general, researchers may tend to pool the units together where each observation is treated as independently among the others. Such restriction is invalid because most of the economic data are cross correlated between cross sectional units which may arise from a common influence which affects all units. This is known as cross sectional dependence (CD). The presence of outliers may result in rejection of null hypothesis, that is, in support of cross sectional independence. To overcome such problem, alternative methods which are insensitive to …

Simulation Of Lithium-Ion Concentration Profiles In Separator And Cathode Of Lithium-Ion Battery Using Theta Formulation Under Finite Difference Method / Md Jauharul Haqaiq Harun, Harun Md Jauharul Haqaiq

Student Works (2010-2019)

This research focuses on the material balance equation governing the lithium-ion concentration in an electrolyte/solution phase of a lithium-ion battery. The main objective of this research is to obtain the solution for this governing equation in order to simulate the concentration profile of a lithium-ion battery during discharge process. The second objective of this research is to study the behavior of these lithium-ion concentrations in the electrolyte/solution phase of a lithium-ion battery under various conditions. In order to achieve the second objective of this study, various simulations of lithium-ion concentrations in the electrolyte/solution phase of a lithium-ion battery were performed. …

Exclusive Photoproduction Of Ψ(2s) In Electron-Proton Collision At Hera / Zulidza Zulkaply, Zulkaply Zulidza

Student Works (2010-2019)

The exclusive photoproduction of y (2S)mesons, g p

The English Language Needs Of Aircraft Maintenance Engineering Students At A Private College / Thevarajah T. Ratnam, Thevarajah T. Ratnam

Student Works (2010-2019)

This research report attempts to identify the English language needs of the students of the Diploma in Aircraft Maintenance Technology at Kolej TAFE Seremban. The study first discusses the importance of English in aircraft maintenance engineering and the English language proficiency of Malaysian students at present. This is followed by a review of related literature. A questionnaire was used to employ feedback from a sample of 100 students while five lecturers were interviewed individually. The findings show that students generally feel they have the required level of proficiency in English to complete the course successfully. However, the lecturers feel that …

Algorithm Optimization And Low Cost Bit-Serial Architecture Design For Integer-Pixel And Sub-Pixel Motion Estimation In H.264/Avc / Mohammad Reza Hosseiny Fatemi, Mohammad Reza Hosseiny Fatemi

Student Works (2010-2019)

H.264/AVC employs variable block-size motion estimation (VBSME) with quarter-pixel accuracy, which significantly improves its coding performance. However, the higher coding performance comes at the price of huge computational complexity and memory bandwidth. Therefore, acceleration of the motion estimation (ME) in H.264/AVC with efficient algorithms and architectures is essential for real-time applications. This thesis is concerned with algorithm optimization and efficient low cost architecture design for integer motion estimation (IME) and sub-pixel motion estimation (SME) of H.264/AVC. Regarding the IME of H.264/AVC, we introduce two low cost bit-serial architectures, which are based on full search (FS) algorithm due to its regularity …

Probing Understanding: Emergent Second Language Readers’ Visual Literacy / Marina Binti Mohd Arif, Mohd Arif Marina

Student Works (2010-2019)

Due to the visually saturated world we live in more children are becoming visual learners but the school curriculum is yet to acknowledge this change and a lot of literacy teaching still focuses on the ability to decode and encode printed words. There is a need then to look into the potential of visuals in the teaching of second language literacy and to acknowledge the individual differences and needs of young learners. This study was conducted to better understand emergent second language readers’ visual literacy by looking at the meaning-making process that children engage in when transacting with books that …

Numerical Solution Of Elliptic Partial Differential Equations By Haar Wavelet Operational Matrix Method / Nor Artisham Che Ghani, Nor Artisham Che Ghani

Student Works (2010-2019)

The purpose of this study is to establish a simple numerical method based on the Haar wavelet operational matrix of integration for solving two dimensional elliptic partial differential equations of the form, Ñ2u(x, y) + ku(x, y) = f (x, y) with the Dirichlet boundary conditions. To achieve the target, the Haar wavelet series were studied, which came from the expansion for any two dimensional functions g(x, y) defined on L2 ([0,1)´ [0,1)), i.e. g(x, y) =Σc h (x)h ( y) ij i j or compactly written as HT (x)CH( y) , where C is the coefficient matrix and H(x) …

Analysis Of Anthocyanin Colour Stability From Fruits Pulp Of Melastoma Malabathricum / Norkasmani Binti Aziz, Norkasmani Aziz

Student Works (2010-2019)

The aim of this dissertation is to evaluate suitability of anthocyanin from M. malabathricum as potential natural colourant for coating system and also to evaluate the colour stability of anthocyanin colorant with and without Ferulic acid (FA) stabilising agent in a polyvinyl alcohol (PVA) binder coating system. Besides that the purpose for this project is to analyse the colour stability of potential natural colourant in a coating system in terms of percentage of FA and pH toward UV-B irradiation using CIE system. The anthocyanin colourant from M.malabathricum using acidified methanol for crude and purified colourant. Purification was performed by liquid-liquid …

Bismuth-Based Erbium-Doped Fiber For Mode-Locking And Nonlinear Applications / Mohammadreza Abdolhosseini Moghaddam, Mohammadreza Abdolhosseini Moghaddam

Student Works (2010-2019)

Nature of Bi-related emission centers is not yet clear. Further research must be conducted to have a broadband low noise amplification and to raise efficiencies to level exhibited by silica-EDF systems. The pulse duration in generated train of pulses is one order of magnitude lower than that of a typical EDFA.This thesis describes laser generation process based on nonlinear effects, utilizing highly nonlinear fibers or/and Bismuth-based Erbium Doped Fiber (Bi-EDF). Various configurations were demonstrated using the Bi-EDF to generate various seed signals for optical amplifiers and nonlinear applications. Nonlinear effects both through stimulated Brillouin Scattering and slicing of spectrum were …

The Discourse On Science, Islam And Modernity In 19th Century Thought: Sayid Jamal Al-Din Al-Afghani’S Exchange With Ernest Renan As A Casestudy / Fadzlullah Bin Shuib, Fadzlullah Shuib

Student Works (2010-2019)

The purpose of this dissertation is to describe and contextualize an account of the discourse on modern science, Islam and modernity in the nineteenth century. It is a descriptive and analytic undertaking, written in an academic language.The study is primarily based on the assumption that the current debate on science, Islam and modernity in the the nineteenth century can be presented through the elaboration and analysis of the works of renowned thinkers. The research scope encompasses both Islamic and Western thought in relation to works written by two scholars namely Sayyid Jamal al-Din Al-Afghani and Ernest Renan, as well as …

Wavelet Based Fault Tolerant Control Of Induction Motor / Khalaf Salloum Gaeid, Khalaf Salloum Gaeid

Student Works (2010-2019)

IMs are an important part of the industry as they provide convenience through their simple construction and a minimum maintenance. In addition they are highly rigid and reliable. They are mostly used in compressors, fans and pumps, but their usage has progressed to a much advanced level such as, aircrafts, space shuttles and military applications. These operations are crucial and cannot tolerate compromise in reliability and safety. This thesis aims at exploring the fault tolerant control of the IMs. This involves sensor based closed loop vector control for a healthy IM, Variable frequency with constant flux(V/F) closed loop for both …

A Study Of Real Hypersurfaces In Complex Space Forms With Condition On The Jacobi Operator / Ren Shiquan, Shiquan Ren

Student Works (2010-2019)

In this thesis, we first review some basic concepts in Riemannian geometry and then give a detailed survey on real hypersurfaces in a non-flat complex space form. After this, some new results on characterizing real hypersurfaces in a non-flat complex space form in terms of R� are presented. The main results are proved in the last two chapters. We give a characterization for ruled real hypersurfaces in a non-flat complex space form by the condition (rXR�)� = 0, for X 2

Resonant Inelastic X-Ray Scattering Of Methyl Chloride At The Chlorine K Edge, L. El Khoury, Loic Journel, Renaud Guillemin, Stephane Carniato, Wayne C. Stolte, T. Marin, Dennis W. Lindle, Marc Simon

Chemistry and Biochemistry Faculty Research

We present a combined experimental and theoretical study of isolated CH3Cl molecules using resonant inelastic x-ray scattering (RIXS). The high-resolution spectra allow extraction of information about nuclear dynamics in the core-excited molecule. Polarization-resolved RIXS spectra exhibit linear dichroism in the spin-orbit intensities, a result interpreted as due to chemical environment and singlet-triplet exchange in the molecular core levels. From analysis of the polarization-resolved data, Cl 2px, y and 2pz electronic populations can be determined.

Thomson-Resonant Interference Effects In Elastic X-Ray Scattering Near The Cl K Edge Of Hcl, Stephane Carniato, P. Selles, Loic Journel, Renaud Guillemin, Wayne C. Stolte, L. El Khoury, T. Marin, Faris Gel'mukhanov, Dennis W. Lindle, Marc Simon

Chemistry and Biochemistry Faculty Research

We experimentally observed interference effects in elastic x-ray scattering from gas-phase HCl in the vicinity of the Cl K edge. Comparison to theory identifies these effects as interference effects between non-resonant elastic Thomson scattering and resonant Raman scattering. The results indicate the non-resonant Thomson and resonant Raman contributions are of comparable strength. The measurements also exhibit strong polarization dependence, allowing an easy identification of the resonant and non-resonant contributions.

Mobile Based Symptom Management For Palliative Care, Md Munirul Haque

Dissertations (1934 -)

The goal of palliative care is to improve the quality of life of terminally ill patients through the management of pain and other symptoms. Though the term `palliative care' is well known in the developed world, it is relatively a new term in the developing world. According to WHO, each year 4.8 million people suffering from severe pain caused by cancer, fail to receive treatment due to lack of resources and other barriers.

In this thesis we have elaborated on the challenges faced by the rural breast cancer (BC) patients of Bangladesh and a solution for their palliative care treatment. …

Plant-Soil Feedbacks Provide An Alternative Explanation For Diversity-Productivity Relationships, Andrew Kulmatiski, Karen H. Beard, Justin Heavilin

Wildland Resources Faculty Publications

Plant–soil feedbacks (PSFs) have gained attention for their role in plant community dynamics, but their role in productivity has been overlooked. We developed and tested a biomass-specific, multi-species model to examine the role of PSFs in diversity–productivity relationships. The model predicts a negative relationship between PSFs and overyielding: plants with negative PSFs grow more in communities than in monoculture (i.e. overyield), and plants with positive PSFs grow less in communities than in monoculture (i.e. underyield). This effect is predicted to increase with diversity and saturate at low species richness because the proportion of ‘self-cultivated’ soils rapidly decreases as species are …

Cultural Humility: A Framework For Local And Global Engagement, Eloise Hockett, Linda Samek, Scot Headley

International Christian Community of Teacher Educators Journal

Many institutions of higher education have implemented local and global engagement opportunities as a way to expose both students and faculty to different cultures and further their knowledge of those cultures. One of the primary goals of these cultural experiences is for students and faculty to become more culturally competent. However, it is possible that our current way of thinking and promoting cultural competency within education specifically may not go deep enough and could be considered limiting in the ways we partner, collaborate, and interact with people groups different than ourselves. Cultural humility, a construct currently accepted in some professional …

Annual Report 2011, Belfius

Documents

No abstract provided.

Holocene Arroyo Cut And Fills Cycles, South-Central Washington, Matthew Ian Durkee

All Master's Theses

Ephemeral streams have cut deeply incised arroyos into alluvial and eolian sediments in many of the watersheds within the Yakima Training Center (YTC) military reservation, south-central Washington. The most recent channel incision episode along Selah Creek is primarily attributed to multiple failures of an irrigation reservoir dam during the winters of 1909 and 1910. The modern arroyo exposed evidence of at least one previous episode of arroyo incision to a depth of ~4 m that occurred just prior to 1530- 1340 cal yr BP. Filling of this paleo-arroyo with fine to coarse grained sand ceased between 650-103 cal yr BP. …

Applying Gis Metrics To Determine Degree Of Glacial Modification In Mountainous Landscapes, Carl Delbert Swanson Ii

All Master's Theses

The ability to quantitatively assess the degree of glaciation in mountainous areas can be a powerful tool in unraveling the evolution of landscapes, and provide key insights in regions where field research is difficult. Here we determine, test, and apply metrics that assess the relative degree of past glacial modification in mountainous landscapes. Results show that slope results can be used to quantitatively assess the degree to which an area is modified by glaciation. In particular, analysis of basins using slope frequency distribution curves and slope vs. elevation plots capture steeper slopes, flatter valley bottoms, cirques, and arêtes of glaciated …

Documenting The Origin Of Compositional Diversity Of Subduction Zone Magmatism, Alicudi, Aeolian Arc (Southern Tyrrhenian Sea, Italy) Using In Situ Plagioclase Data, Rachel Hunt

All Master's Theses

Processes that generate magma compositional diversity are important to document because composition affects degree of explosivity, which impacts hazard mitigation. Magnesium to silicon rich magmas are produced by processes such as magma recharge, assimilation, and fractional crystallization (RAFC) that occur in subvolcanic magma chamber(s). This study evaluates how magma chamber processes contribute to compositional diversity at Alicudi Volcano, Italy. Analytical and petrographic data from ten samples that span the subaerial history include whole rock major and trace elements and strontium/neodymium isotopes, and plagioclase textural types, major and trace elements, and strontium isotopes; numerical modeling was also conducted. Integration of these …