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2012

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Probing The Cob(Ii)Alamin Cond Uctorhhypothesis With Glutamate Mutase From Clostridium Cochlearium, Fe Lyatuu, A Parthasarathy, K Zhou, K Zelenka, Fh Zelder, W Buckel Dec 2012

Probing The Cob(Ii)Alamin Cond Uctorhhypothesis With Glutamate Mutase From Clostridium Cochlearium, Fe Lyatuu, A Parthasarathy, K Zhou, K Zelenka, Fh Zelder, W Buckel

Tanzania Journal of Science

It had been proposed that during reversible coenzyme B12 dependent rearrangements, cob(II)alamin is not merely present as a spectator but also acts as a conductor by stabilizing the methylene radical intermediates. Density functional theory (DFT) calculations suggested a hydrogen bond between C19-H of the corrin ring and the 3'-OH moiety (O3RL) of the 5'- deoxyadenosyl radical resulting in a decrease of the activation energy by about 30 kJ mol-1. We tested this hypothesis with glutamate mutase and artificial coenzyme B12 derivatives. The assembly of coenzyme B12 (adenosylcobalamin) with recombinant components GlmS and GlmE of glutamate mutase from Clostridium cochlearium reconstitutes …

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Effects Of Temperature On The Physicochemical Properties Of Traditionally Processed Vegetable Oils And Their Blends, Fn Ngassapa, Ss Nyandoroa, Tr Mwaisaka Dec 2012

Effects Of Temperature On The Physicochemical Properties Of Traditionally Processed Vegetable Oils And Their Blends, Fn Ngassapa, Ss Nyandoroa, Tr Mwaisaka

Tanzania Journal of Science

The quality and stability of traditionally processed palm, sunflower and sesame oils and their blends as affected by temperature were evaluated by analyzing their physicochemical properties which included acid, saponification, peroxide, iodine values and refractive indices.. The initial quality of traditionally processed oils studied was found to be within the specifications of TZS and Codex requirements. The results further indicate that the quality of both unblended and blended traditionally processed vegetable oils deteriorate significantly at elevated temperatures (p < 0.05). However, the blends showed relatively better quality and stability than the unblended ones whereby the formulations of palm oil (PO) and sesame oil (SSO) appeared to be more stable than those of PO and sunflower oil (SO). This work suggests that blending of traditionally processed PO, SO and SSO improves the quality and stability of these oils.

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Evaluation Of Patterns And Spatial Trends Of Pesticide Residues From Vikuge Farm, Coast Region, Tanzania By Principal Components Analysis, Kf Kilulya, Gs Mhinzi Dec 2012

Evaluation Of Patterns And Spatial Trends Of Pesticide Residues From Vikuge Farm, Coast Region, Tanzania By Principal Components Analysis, Kf Kilulya, Gs Mhinzi

Tanzania Journal of Science

This paper reports on the analysis of organochlorine pesticides pollution data obtained from samples collected from Vikuge farm, Coast Region, Tanzania between 2000 and 2003 by principal component analysis (PCA). PCA of the data sets for pesticide residues in water, soil and sediments samples from Vikuge has shown that the obsolete pesticides dumped at Vikuge pasture farm for a number of years undergo degradation with time and the distribution pattern of the pesticides in the three environments is similar. Strong outliers were also identified in the data by the use of PCA score plots. Further analysis of the data by …

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Biorecognition Ability Of Polysaccharides As Piezo Quartz Biosensors, En Kalmykova, Ca Mgina Dec 2012

Biorecognition Ability Of Polysaccharides As Piezo Quartz Biosensors, En Kalmykova, Ca Mgina

Tanzania Journal of Science

Piezoquartz biosensors (PQB) which are analytical devices for recognition of biochemical interactions have recently attracted increasing interest from different researchers such as analysts, immune-chemists, medical doctors, environmentalists, etc. This is due to the advantages of PQB for having high detection sensitivity (at ng and mg level depending on the mass of sorbates or micro-organisms) and the ability to monitor biochemical reactions in turbid or highly coloured liquids (including in biological fluids) in real time. The use of additional markers and preliminary sample preparation are not required in this biorecognition process. This paper reports on the principle of the PQB and …

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An Ultra-Low Power Communication Protocol For A Self-Powered Wireless Sensor Based Animal Monitoring System, Tao Ma Dec 2012

An Ultra-Low Power Communication Protocol For A Self-Powered Wireless Sensor Based Animal Monitoring System, Tao Ma

Department of Computer Electronics and Engineering: Dissertations, Theses, and Student Research

To prevent and control the outbreak of contagious animal disease, many countries have developed animal identification and tracking systems. However, the current animal identification and tracking system, which is based on passive RFID technology, has many limitations such as the short communication range and incapability of automatically monitoring the animal. To overcome these limitations, our Advanced Telecommunications Engineering Laboratory (TEL) in Department of Computer and Electronics Engineering (CEEN), University of Nebraska-Lincoln took the mission of developing a more advanced monitoring system for animal identification and tracking. This dissertation work as a part of this mission was focusing on developing an …

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Successfully Climbing The "Stairs": Surmounting Failed Translation Of Experimental Ischemic Stroke Treatments, Michael Kahle, Gregory J. Bix Dec 2012

Successfully Climbing The "Stairs": Surmounting Failed Translation Of Experimental Ischemic Stroke Treatments, Michael Kahle, Gregory J. Bix

Sanders-Brown Center on Aging Faculty Publications

The Stroke Therapy Academic Industry Roundtable (STAIR) provided initial (in 1999) and updated (in 2009) recommendations with the goal of improving preclinical stroke therapy assessment and to increase the translational potential of experimental stroke treatments. It is important for preclinical stroke researchers to frequently consider and revisit these concepts, especially since promising experimental stroke treatments continue to fail in human clinical trials. Therefore, this paper will focus on considerations for several key aspects of preclinical stroke studies including the selection and execution of the animal stroke model, drug/experimental treatment administration, and outcome measures to improve experimental validity and translation potential. …

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The Enforcement Methodology Of Non-Domestic Arbitral Awards Rendered In The United States & Foreign-Related Arbitral Awards Rendered In The People's Republic Of China Pursuant To Domestic Law And The New York Convention, Christina Cheung Dec 2012

The Enforcement Methodology Of Non-Domestic Arbitral Awards Rendered In The United States & Foreign-Related Arbitral Awards Rendered In The People's Republic Of China Pursuant To Domestic Law And The New York Convention, Christina Cheung

Santa Clara Journal of International Law

No abstract provided.

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Identifying Significant Changes In Serials With Title Changes In The Recognition Of New Works, Mavis B. Molto Dec 2012

Identifying Significant Changes In Serials With Title Changes In The Recognition Of New Works, Mavis B. Molto

Library Faculty & Staff Publications

The purpose of the study was to develop a means for identifying significant subject and function changes in serials with title changes and then to recommend ways to recognize new serial works in cataloging. A sample of serials with title changes was used to classify the underlying subject and function changes found into thirty-five subcategories, which were then each assigned a level (high, medium, or low) according to the evidence provided for a new work. The FRBR (Functional Requirements for Bibliographic Records) concept of a work and other FRBR guidelines were used in assigning the levels. It was determined that …

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Ict Skills And Computer Self-Efficacy Of Research Students: The Case Of Institute Of Pure & Applied Biology And Biotechnology, Bahauddin Zakariya University, Multan, Pakistan, Muhammad Naushad Sabzwari, Rubina Bhatti, Bashir Ahmed Dec 2012

Ict Skills And Computer Self-Efficacy Of Research Students: The Case Of Institute Of Pure & Applied Biology And Biotechnology, Bahauddin Zakariya University, Multan, Pakistan, Muhammad Naushad Sabzwari, Rubina Bhatti, Bashir Ahmed

Library Philosophy and Practice (e-journal)

In the current changing higher education environment research students need to possess ample skills related to use of computer and different ICTs for education and research purposes. This study aims to investigate the awareness, usage and impact of information and communication technologies (ICTs) for information, education and research purposes among the Botany, Zoology and Biotechnology research students of Bahauddin Zakariya University, Multan. For this purpose, data was collected from students involved in research, in order to get information and awareness about their competencies and skills in ICT and other searching and data analyzing tools. The literature review shows that most …

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Students’ Science Knowledge As A Constraint In Developing Interests In Science Studies Among Secondary School Learners In Tanzania, John F. Kalolo, Eugenia J. Kafanabo Dec 2012

Students’ Science Knowledge As A Constraint In Developing Interests In Science Studies Among Secondary School Learners In Tanzania, John F. Kalolo, Eugenia J. Kafanabo

Journal of Humanities and Social Sciences

The paper examines how students’ science knowledge is a constraint in developing interests in science studies. There are three objectives that guided the study on which this paper is based: examining student’s background knowledge about science and its related careers; assessing student’s awareness on science related professions; and examining the availability of various sources of science knowledge in schools for developing interest in science subjects in secondary schools. A total of 246 respondents participated in the study; and these included 60 teachers, 180 students and 6 heads of schools. The data were collected through questionnaire, interview, focus group discussion, and …

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Electrocatalytic Oxidation Of Formic Acid On Pd/Ni Heterostructured Catalyst, Mingjun Ren, Liangliang Zou, Ju Chen, Ting Yuan, Qinghong Huang, Haifeng Zhang, Hui Yang, Songlin Feng Dec 2012

Electrocatalytic Oxidation Of Formic Acid On Pd/Ni Heterostructured Catalyst, Mingjun Ren, Liangliang Zou, Ju Chen, Ting Yuan, Qinghong Huang, Haifeng Zhang, Hui Yang, Songlin Feng

Journal of Electrochemistry

A Pd/Ni bimetallic nanostructured electrocatalyst was fabricated via a two-step reduction route. Owing to an epitaxial growth of Pd atoms on the surface of Ni nanoparticles, heterostructured Pd/Ni nanocomposites were formed and verified by high resolution transmission electron microscopy combined with energy-dispersion X-ray spectroscopy. X-ray diffraction confirmed that the as-prepared Pd/Ni nanocomposites possessed a single face-centered-cubic (fcc) Pd structure, probably due to a weaker diffraction intensity of metallic Ni and/or overlapping by that of Pd. The intrinsic catalytic activity on the Pd/Ni is higher than that on the Pd. Moreover, the durability of formic acid oxidation on the Pd/Ni was …

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Electrochemical Performance Of Screen-Printed Composite Coatings Of Conducting Polymers And Carbon Nanotubes On Titanium Bipolar Plates In Aqueous Asymmetrical Supercapacitors, Xiaohang Zhou, George Z. Chen Dec 2012

Electrochemical Performance Of Screen-Printed Composite Coatings Of Conducting Polymers And Carbon Nanotubes On Titanium Bipolar Plates In Aqueous Asymmetrical Supercapacitors, Xiaohang Zhou, George Z. Chen

Journal of Electrochemistry

Composites of conducting polymers (polypyrrole and polyaniline) with acid treated multi-walled carbon nanotubes were formulated into printable aqueous inks, with the aid of functional additives (benzethonium chloride as a surfactant with or without polyvinyl alcohol as a binder). The inks were screen-printed as fairly uniform coatings of various mass loading densities and areas (up to 75 mg cm-2 and 100 cm2) on thin titanium plates (0.1 mm in thickness). These screen-printed plates were used to fabricate both unit cell and multi-cell stack of asymmetrical supercapacitors with screen-printed negative electrodes of activated carbon (pigment black) in aqueous electrolytes …

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Content Validity Of National Examinations In Assessing The Curriculum Objectives In Tanzania, Kitila Mkumbo Dec 2012

Content Validity Of National Examinations In Assessing The Curriculum Objectives In Tanzania, Kitila Mkumbo

Journal of Humanities and Social Sciences

Several factors have been attributed to poor performance of students in the national form four examinations in the past five years. These factors include lack of teachers’ qualifications and poor commitment to teach; lack of teaching and learning facilities such as books, laboratory equipment and libraries; and poor teachers’ working conditions. Nevertheless, there has been no attempt to systematically examine the content of examinations as related to the implemented curriculum, with a view to assessing the validity of these examinations. This paper examines the content validity of the Form IV national examinations in assessing the curriculum objectives. The key question …

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The Role Of Heads Of Departments In Enhancing The Quality Of Education In Secondary Schools In Tanzania, Perpetua J. Urio Dec 2012

The Role Of Heads Of Departments In Enhancing The Quality Of Education In Secondary Schools In Tanzania, Perpetua J. Urio

Journal of Humanities and Social Sciences

Heads of department are perceived as instructional leaders. This paper is based on a study that aimed to find out how heads of departments in Tanzanian secondary schools deal with their tasks in enhancing the quality of education, and the support accorded to them by the school administrative system in the performance of their duties. The study was conducted in Arusha and Coast regions, comprising a sample of 72 respondents from eight secondary schools. Data were collected through interviews, questionnaires and documentary review. Data collected were subjected to content analysis and numerical data were summarized into tables. Findings revealed that, …

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Development Of Information And Communication Technology In Education In Tanzania: How Is Duce Playing Its Role?, Josta L. Nzilano, Ayoub C. Kafyulilo Dec 2012

Development Of Information And Communication Technology In Education In Tanzania: How Is Duce Playing Its Role?, Josta L. Nzilano, Ayoub C. Kafyulilo

Journal of Humanities and Social Sciences

This paper presents the ICT integration situation in Tanzania, and the efforts that are being made by the Dar es Salaam University College of Education (DUCE), as a teacher training institution, to have ICT integrated in the education system at the college and country at large. Over 60 articles and reports were gathered and read in the process of writing the paper. However, through rigorous review of each article only 35 were found to match best with the goal of this study. Results from literature indicate that technology integration in the country was still at an infant stage. Most educational …

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Effectiveness Of Basic Mathematics Continuous Assessment Feedback In Secondary Schools In Tanzania: The Case Of Schools In Coast And Dar Es Salaam Regions, Florence Kyaruzi Dec 2012

Effectiveness Of Basic Mathematics Continuous Assessment Feedback In Secondary Schools In Tanzania: The Case Of Schools In Coast And Dar Es Salaam Regions, Florence Kyaruzi

Journal of Humanities and Social Sciences

This paper assesses the effectiveness of Basic Mathematics Continuous Assessment (CA) feedback in selected high performing (HP) and low performing (LP) secondary schools in Coast and Dar es Salaam regions, Tanzania. Various aspects that constitute an effective CA feedback were scrutinised. The paper is based on research. In this research, a mixed research approach of the concurrent triangulation design was employed where stratified, simple random and purposeful sampling techniques were used. The study was informed by documentary review, questionnaires and classroom observations. Data were both qualitatively and quantitatively analysed using content analysis and Statistical Software for Social Sciences (SPSS), version …

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Advances And Challenges Of Intermediate Temperature Solid Oxide Fuel Cells: A Concise Review, Sanping Jiang Dec 2012

Advances And Challenges Of Intermediate Temperature Solid Oxide Fuel Cells: A Concise Review, Sanping Jiang

Journal of Electrochemistry

Fuel cell is an electrochemical energy conversion device to directly convert the chemical energy of fuels to electricity. Among all types of fuel cells, solid oxide fuel cells (SOFCs) operating at intermediate temperatures of 600~800 oC offer an attractive option that is much more fuel flexible than low temperature fuel cells such as proton exchange membrane fuel cells, and is suitable for a wide range of applications. However, two main challenges remain towards the commercial viability and acceptance of the SOFC technologies: the cost and durability. Both are critically dependent on the process, fabrication, performance, chemical and microstructural stability …

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Electrocatalytic Activity Of Palladium Nanocatalysts Supported On Carbon Nanoparticles In Formic Acid Oxidation, Jie Huang, Zhiyou Zhou, Yang Song, Xiongwu Kang, Ke Liu, Wancheng Zhou, Shaowei Chen Dec 2012

Electrocatalytic Activity Of Palladium Nanocatalysts Supported On Carbon Nanoparticles In Formic Acid Oxidation, Jie Huang, Zhiyou Zhou, Yang Song, Xiongwu Kang, Ke Liu, Wancheng Zhou, Shaowei Chen

Journal of Electrochemistry

Palladium nanostructures were deposited onto carbon nanoparticle surface by a chemical reduction method. Transmission electron microscopic studies showed that whereas the resulting metal-carbon (Pd-CNP) nanocomposites exhibited a diameter of 20 to 30 nm, the metal components actually showed a cauliflower-like surface morphology that consisted of numerous smaller Pd nanoparticles (3 to 8 nm). Electrochemical studies showed that the effective surface area of the Pd-CNP nanoparticles was about 40% less than that of Pd black, possibly because the Pd nanoparticles were coated with a layer of carbon nanoparticles; yet, the Pd-CNP nanocomposites exhibited marked enhancement of the electrocatalytic activity in formic …

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Adsorption And Electrooxidation Of Carbon Monoxide On Platinum Surfaces Modified With Sulfur, A. Mattox Mathew, W. Henney Matthew, Johnson Adam, Zou Shouzhong Dec 2012

Adsorption And Electrooxidation Of Carbon Monoxide On Platinum Surfaces Modified With Sulfur, A. Mattox Mathew, W. Henney Matthew, Johnson Adam, Zou Shouzhong

Journal of Electrochemistry

Adsorbed sulfur is commonly considered as a reaction poison. However, small amounts of sulfur on platinum significantly increase the surface reactivity toward carbon monoxide (CO) electrooxidation. For the solution CO oxidation, the onset potential was shifted up to over 300 mV negative to that on S-free surface, and the extent of the negative potential shift increases with the sulfur coverage (Xs) up to about 0.6. The enhanced CO oxidation also depends on the solution pH. For the adsorbed CO, at low sulfur coverages (Xs < 0.3), the oxidation peak potential is about 40 mV negative to that of the corresponding clean Pt. However, at higher coverages, the peak potential is about 30 mV more positive. Surface-enhanced Raman spectra show that the adsorption of sulfur significantly redshifts the Pt-CO stretching frequency. These observations are explained by the weakening of the Pt-CO bond and the hindrance of CO diffusion by Sads.

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Kinetic Study Of Photoelectrochemical Oxidation Of Lignin Model Compounds On Tio2 Nanotubes, Min Tian, Daniel Liba, Aicheng Chen Dec 2012

Kinetic Study Of Photoelectrochemical Oxidation Of Lignin Model Compounds On Tio2 Nanotubes, Min Tian, Daniel Liba, Aicheng Chen

Journal of Electrochemistry

In this study, TiO2 nanotubes were prepared via the electrochemical oxidation of titanium substrates in a non-aqueous electrolyte and their morphology and microstructures were examined by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The photoelectrochemical oxidation of two lignin model compounds, 1-(3,4-dimethoxyphenoxy)-2-(2-methoxyphenoxy)-1,3-propanediol (DMP) and 3-hydroxy-1-(3,4-dimethoxyphenoxy)-2-(2-methoxyphenoxy)-1,3-propanone (HDM), was investigated. A new band appeared at ~304 nm during the photoelectrochemical oxidation of DMP. The rate of DMP intermediate formation was amplified with the increase of initial concentrations, while it was diminished with increased temperature. Despite the similarity in structure between HDM and DMP, there are only small increases in absorbance …

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Ternary Alloy Electrocatalysts For Oxygen Reduction Reaction, Jin Luo, Lefu Yang, Binghui Chen, Chuanjian Zhong Dec 2012

Ternary Alloy Electrocatalysts For Oxygen Reduction Reaction, Jin Luo, Lefu Yang, Binghui Chen, Chuanjian Zhong

Journal of Electrochemistry

Proton exchange membrane fuel cell represents an important electrochemical energy conversion device with many attractive features in terms of efficiency of energy conversion and minimization of environmental pollution. However, the large overpotential for oxygen reduction reaction at the cathode and the low activity, poor durability and high cost of platinum-based catalysts in the fuel cells constitute a focal point of major barriers to the commercialization of fuel cells. The development of nanostructured catalysts shows promises to addresses some of the challenging problems. The ability to engineer the composition and nanostructure of nanoalloy catalysts is important for developing active, robust and …

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Testing Diagnostics Of Nuclear Activity And Star Formation In Galaxies At Z > 1, Jonathan R. Trump, Nicholas P. Konidaris, Guillermo Barro, David C. Koo, Dale D. Kocevski, Stéphanie Juneau, Benjamin J. Weiner, S. M. Faber, Ian S. Mclean, Renbin Yan, Pablo G. Pérez-González, Victor Villar Dec 2012

Testing Diagnostics Of Nuclear Activity And Star Formation In Galaxies At Z > 1, Jonathan R. Trump, Nicholas P. Konidaris, Guillermo Barro, David C. Koo, Dale D. Kocevski, Stéphanie Juneau, Benjamin J. Weiner, S. M. Faber, Ian S. Mclean, Renbin Yan, Pablo G. Pérez-González, Victor Villar

Physics and Astronomy Faculty Publications

We present some of the first science data with the new Keck/MOSFIRE instrument to test the effectiveness of different AGN/SF diagnostics at z ~ 1.5. MOSFIRE spectra were obtained in three H-band multi-slit masks in the GOODS-S field, resulting in 2 hr exposures of 36 emission-line galaxies. We compare X-ray data with the traditional emission-line ratio diagnostics and the alternative mass-excitation and color-excitation diagrams, combining new MOSFIRE infrared data with previous HST/WFC3 infrared spectra (from the 3D-HST survey) and multiwavelength photometry. We demonstrate that a high [O III]/Hβ ratio is insufficient as an active galactic nucleus (AGN) indicator …

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Exploitation Of Rf-Dna For Device Classification And Verification Using Grlvqi Processing, Donald R. Reising Dec 2012

Exploitation Of Rf-Dna For Device Classification And Verification Using Grlvqi Processing, Donald R. Reising

Theses and Dissertations

This dissertation introduces a GRLVQI classifier into an RF-DNA fingerprinting process and demonstrates applicability for device classification and ID verification. Unlike MDA/ML processing, GRLVQI provides a measure of feature relevance that enables Dimensional Reduction Analysis (DRA) to enhance the experimental-to-operational transition potential of RF-DNA fingerprinting. Using 2D Gabor Transform RF-DNA fingerprints extracted from experimentally collected OFDM-based 802.16 WiMAX and 802.11 WiFi device emissions, average GRLVQI classification accuracy of %C greater than or equal to 90% is achieved using full and reduced dimensional feature sets at SNR greater than or equal to 10.0 dB and SNR greater than or equal to …

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Polymorphism And Polyamorphism In Bilayer Water Confined To Slit Nanopore Under High Pressure, Jaeil Bai, Xiao Cheng Zeng Dec 2012

Polymorphism And Polyamorphism In Bilayer Water Confined To Slit Nanopore Under High Pressure, Jaeil Bai, Xiao Cheng Zeng

Xiao Cheng Zeng Publications

A distinctive physical property of bulk water is its rich solid-state phase behavior, which includes 15 crystalline (ice I–ice XIV) and at least 3 glassy forms ofwater, namely, low-density amorphous, highdensity amorphous, and very-high-density amorphous (VHDA). Nanoscale confinement adds a new physical variable that can result in a wealth of new quasi-2D phases of ice and amorphous ice. Previous computer simulations have revealed that when water is confined between two flat hydrophobic plates about 7–9 Å apart, numerous bilayer (BL) ices (or polymorphs) can arise [e.g., BL-hexagonal ice (BL-ice I)]. Indeed, growth of the BL-ice I through vapor deposition on …

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Adapting To Scarcity: Developing An Integrated Allocation Formula, George Stachokas, Tim Gritten Dec 2012

Adapting To Scarcity: Developing An Integrated Allocation Formula, George Stachokas, Tim Gritten

Libraries Faculty and Staff Scholarship and Research

Rising costs for library materials and shrinking budgets make it more necessary than ever for academic libraries to target their scarce resources to meet the specific needs of academic programs. The authors surveyed other institutions to determine current practices in the allocation of library materials funds in different formats. The results of our survey were inconclusive, which led us to combine monographs and continuations in a single allocation formula. By crafting an allocation formula for both monographs and continuations in print and electronic format, the Cunningham Memorial Library at Indiana State University hopes to satisfy the growing demand for information …

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U.S. Drought Monitor, December 25, 2012, Richard R. Heim Jr. Dec 2012

U.S. Drought Monitor, December 25, 2012, Richard R. Heim Jr.

United States Agricultural Commodities in Drought Archive

Drought map of the United States for December 25, 2012 (12/25/12) plus: United States crop areas experiencing drought (map), an approximate percentage of crop located in drought by state (bar graph), and the percentage of crop area located in drought during the past 52 weeks (line graph) for hay, cattle, and winter wheat.

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Method And System For Non-Invasive Optical Blood Glucose Detection Utilizing Spectral Data Analysis, Zhi Xu Dec 2012

Method And System For Non-Invasive Optical Blood Glucose Detection Utilizing Spectral Data Analysis, Zhi Xu

UMSL Patents

Systems and methods are disclosed for non-invasively measuring blood glucose levels in a biological sample based on spectral data. A variety of techniques are disclosed for improving signal-to-noise ratio in the acquisition of spectral data and calculating attenuance of light attributable to blood in a sample. Disclosed techniques include (1) using a standard deviation operation in conjunction with the logarithm function, (2) using a normalization factor, (3) using a ratio factor, (4) accounting for the effect of temperature on various system components such as resistors, and (5) accounting for dark current in a light detector by performing a calibration.

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Iterative Adaptive Solar Tracking Having Variable Step Size, Wasfy Mikhael, Issa Batarseh, Nasser Kutkut, Raghuram Ranganathan Dec 2012

Iterative Adaptive Solar Tracking Having Variable Step Size, Wasfy Mikhael, Issa Batarseh, Nasser Kutkut, Raghuram Ranganathan

UCF Patents

A system controller for position controlling a photovoltaic (PV) panel in a PV system including a power sensor sensing output power (P), and a motor for positioning the PV panel. The system controller includes a computing device having memory that provides motor control signal and implements an iterative adaptive control (IAC) algorithm stored in the memory for adjusting an angle of the PV panel. The IAC algorithm includes an iterative relation that relates P at current time k (P(k)), its elevation angle at k (?s(k)), P after a next step (P(k+1)) and its elevation angle at k+1(?s(k+1)). The IAV algorithm …

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Systems And Method For Performing Gabor-Domain Optical Coherence Microscopy, Jannick Rolland, Panomsak Meemon Dec 2012

Systems And Method For Performing Gabor-Domain Optical Coherence Microscopy, Jannick Rolland, Panomsak Meemon

UCF Patents

In one embodiment, imaging a medium under evaluation includes generating acquired images of the medium, each acquired image comprising a cross-sectional image along a lateral and a depth direction of the medium that results from scanning the medium at a different depths, filtering each acquired image to remove out-of-focus portions of the images and generate filtered images, and merging the filtered images to form a high-resolution fused image.

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Phylogeny Of Indonesian Nostoc (Cyanobacteria) Isolated From Paddy Fields As Inferred From Partial Sequence Of 16s Rrna Gene, Dian Hendrayanti, Lestari Rahayu Kusmadji, Pratiwi Yuliana, Mardhotillah Asma Amanina Dec 2012

Phylogeny Of Indonesian Nostoc (Cyanobacteria) Isolated From Paddy Fields As Inferred From Partial Sequence Of 16s Rrna Gene, Dian Hendrayanti, Lestari Rahayu Kusmadji, Pratiwi Yuliana, Mardhotillah Asma Amanina

Makara Journal of Science

In order to collect Indonesian Nostoc, isolation of soil microflora from several paddy fields in West Java, Bali, and South Celebes was carried out. Fast-growing isolates of Nostoc were selected to describe and perform molecular identification using partial sequences of 16S rRNA. The results showed that partial sequences of 16S rRNA could not resolve the phylogeny of the isolates. However, it supported the morphological studies that recognize isolates as different species of Nostoc. Potential use of Nostoc as a nitrogen source for paddy growth was carried out using six strains as single inoculums. A total biomass of 2 g (fresh …

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