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Orchestrating Mathematical Discussions: A Novice Teacher's Implementation Of Five Practices To Develop Discourse Orchestration In A Sixth-Grade Classroom, Jeffrey Stephen Young Jun 2015

Orchestrating Mathematical Discussions: A Novice Teacher's Implementation Of Five Practices To Develop Discourse Orchestration In A Sixth-Grade Classroom, Jeffrey Stephen Young

Theses and Dissertations

This action research study examined my attempts during a six-lesson unit of instruction to implement five practices developed by Stein, Engle, Smith, and Hughes (2008) to assist novice teachers in orchestrating meaningful mathematical discussions, a component of inquiry-based teaching and learning. These practices are anticipating student responses to a mathematical task, monitoring student responses while they engage with the task, planning which of those responses will be shared, planning the sequence of that sharing, and helping students make connections among student responses. Although my initial anticipations of student responses were broad and resulted in unclear expectations during lesson planning, I …

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Synthesis, Rna Binding And Antibacterial Studies Of 2-Dos Mimetics And Development Of Polymer Supported Nanoparticle Catalysts For Nitroarene And Azide Reduction, Venkata Reddy Udumula Jun 2015

Synthesis, Rna Binding And Antibacterial Studies Of 2-Dos Mimetics And Development Of Polymer Supported Nanoparticle Catalysts For Nitroarene And Azide Reduction, Venkata Reddy Udumula

Theses and Dissertations

Project I 2-Deoxystreptamine (2-DOS), the most conserved central scaffold of aminoglycosides, is known to specifically recognize the 5'-GU-'3 sequence step through highly conserved hydrogen bonds and electrostatic interactions within and without the context of aminoglycosides (Figure 1a). We proposed that a novel monomeric unnatural amino acid building block using 2-DOS as a template would allow us to develop RNA binding molecules with higher affinity and selectivity than those currently available. Conjugating two or more of the monomeric building blocks by an amide bond would introduce extra hydrogen bonding donors and acceptors that are absent in natural aminoglycosides and increase specificity …

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Patterns In Impact, Publication And Themes In International Blended Learning, Kristian Joy Spring Jun 2015

Patterns In Impact, Publication And Themes In International Blended Learning, Kristian Joy Spring

Theses and Dissertations

This research has found that the field of international blended learning (BL) is prepared for stronger communication and collaboration. Collaboration is currently limited, and regions vary greatly in terms of citations. However, BL is growing worldwide and each region has much to offer to the community. Greater collaboration among researchers and practitioners can be profitable regardless of location. In the first article the authors compared the top cited BL articles to understand which articles from each region are the most cited, how the regions compare in terms of citations and which journals publish these highly cited articles. The authors used …

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Identifying And Characterizing Yeast Pas Kinase 1 Substrates Reveals Regulation Of Mitochondrial And Cell Growth Pathways, Desiree Demille Jun 2015

Identifying And Characterizing Yeast Pas Kinase 1 Substrates Reveals Regulation Of Mitochondrial And Cell Growth Pathways, Desiree Demille

Theses and Dissertations

Glucose allocation is an important cellular process that is misregulated in the interrelated diseases obesity, diabetes and cancer. Cells have evolved critical mechanisms for regulating glucose allocation, one of which is sensory protein kinases. PAS kinase is a key sensory protein kinase that regulates glucose allocation in yeast, mice and man; and is a novel therapeutic target for the treatment of metabolic diseases such as obesity, diabetes and cancer. Despite its importance, the molecular mechanisms of PAS kinase function are largely unknown. Through large-scale protein-interaction studies, we have identified 93 novel binding partners for PAS kinase which help to expand …

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Hmgb1 And Ceramides: Potential Mediators Of Cigarette Smoke-Induced Metabolic Dysfunction, Mikayla Orton Thatcher Jun 2015

Hmgb1 And Ceramides: Potential Mediators Of Cigarette Smoke-Induced Metabolic Dysfunction, Mikayla Orton Thatcher

Theses and Dissertations

While cigarette smoking is a common-knowledge way to stay lean, it has long been known as a risk factor for diabetes and obesity. Here we establish that smoking causes fat gain and metabolic disruption in mice, effects which are exacerbated by a high-fat, high-sugar diet. We found that smoke exposure increases levels of ceramide—the lipid responsible for diet-induced insulin resistance—and that blocking ceramide production with the pharmacological inhibitor myriocin restored insulin sensitivity, stopped weight gain, and rescued mitochondrial respiration in vivo and in vitro.We also sought to assess the impact of the RAGE ligand HMGB1 on skeletal muscle metabolism. We …

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Development And Characterization Of Biodegradable Biorenewable Polymeric Nanocomposites For Food Packaging Applications, Samar Mohamed Ahmed Fadl Jun 2015

Development And Characterization Of Biodegradable Biorenewable Polymeric Nanocomposites For Food Packaging Applications, Samar Mohamed Ahmed Fadl

Theses and Dissertations

During the last 10 decades, plastic products have dominated humans’ lives with various applications in different fields, and particularly in food packaging industry. The fact that plastics do have numerous desirable characteristics does not conceal their detrimental effect on the environment and on human health. In order to overcome these problematic issues and to contribute to sustainable development in the future, other alternatives represented in employing biorenewable biodegradable polymers are implemented for plastics production. Poly (lactic acid) (PLA) is one of the most common employed biopolymer owing to its interesting characteristics. However, PLA exhibits poor mechanical and barrier properties. Natural …

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Preparation And Evaluation Of Poly Lactic Acid Antioxidant Packaging Films Containing Thyme, Rosemary And Oregano Essential Oils., Amr Mostafa Zeid Jun 2015

Preparation And Evaluation Of Poly Lactic Acid Antioxidant Packaging Films Containing Thyme, Rosemary And Oregano Essential Oils., Amr Mostafa Zeid

Theses and Dissertations

Protecting foods from oxidation for appreciable amounts of time is becoming a major challenge for the food industry. Lipid containing foods are the most susceptible types of food to oxidation. In the present research study, thyme, rosemary and oregano essential oils were incorporated into PLA to generate antioxidant active packaging films based on the antioxidant activity of the used essential oils. Antioxidant activity of pure essential oils as well as film extracts were assessed by the DPPH method to ensure their efficiency. The antioxidant effect of prepared active films was also evaluated in contact with minced trout fish meat by …

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Challenges Facing Women Living With Hiv In Upper Egypt, Ahmed Hussein Ali Abdeldaim Jun 2015

Challenges Facing Women Living With Hiv In Upper Egypt, Ahmed Hussein Ali Abdeldaim

Theses and Dissertations

This research aims to identify challenges that face women living with HIV in Upper Egypt in order to help policy makers and different stakeholders to overcome those challenges. Interviews with women living with HIV from different governorates in Upper Egypt were conducted. In addition, this research included interviews with national AIDS program officials and NGOs managers to obtain different perspectives about the condition of women living with HIV. Women represent half of people living with HIV around the world. The burden of disease on women is even more challenging in many countries due to gender inequality. The effect of culture …

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A Study Of Allylic Aminations As Catalyzed By Heterobimetallic Pd-Ti Complexes, Diana Lauren Ellis Jun 2015

A Study Of Allylic Aminations As Catalyzed By Heterobimetallic Pd-Ti Complexes, Diana Lauren Ellis

Theses and Dissertations

Heterobimetallic complexes present a unique approach to catalyzing challenging reactions. By having two metals in close proximity to each other, the metals are able to interact and alter their electronics in a way that simple organic ligands (carbon, nitrogen, sulfur etc.) cannot. Our studies of heterobimetallic complexes focus on a Pd–Ti complex. The complex features a dative interaction between the palladium and the titanium held together by a phosphonamide scaffold. This interaction increases the electrophilicity of the palladium and makes it a very suitable catalyst for allylic amination reactions. We have conducted extensive studies of this catalyst in allylic aminations, …

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Advancing Phage Genomics And Honeybee Health Through Discovery And Characterization Of Paenibacillaceae Bacteriophages, Bryan Douglas Merrill Jun 2015

Advancing Phage Genomics And Honeybee Health Through Discovery And Characterization Of Paenibacillaceae Bacteriophages, Bryan Douglas Merrill

Theses and Dissertations

The Paenibacillaceae family of bacteria includes two species known to infect the hives of honeybees, Paenibacillus larvae and Brevibacillus laterosporus. P. larvae, the causative agent of American Foulbrood (AFB) causes a lethal infection of honeybee larvae, while B. laterosporus is a secondary invader following European Foulbrood (EFB) infection. Increasing antibiotic resistance of P. larvae bacteria has prompted a search for alternative treatment methods for this disease. Bacteriophages are the most diverse life forms on earth and can provide important insights about the bacterial hosts they infect. However, few Paenibacillaceae phages have been isolated or characterized. In this study, the first …

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The Cost Effectiveness Of Psychotherapy For Treating Adults With Post-Traumatic Stress Disorder, Micah Lavar Ingalls Jun 2015

The Cost Effectiveness Of Psychotherapy For Treating Adults With Post-Traumatic Stress Disorder, Micah Lavar Ingalls

Theses and Dissertations

This paper presents results from cost-analysis research for treating Post-Traumatic Stress Disorder in adults. Data for this research was provided by Cigna, a nation-wide healthcare manager in the United States of America. The sample size was 12,845 adults who were diagnosed with PTSD and received outpatient individual and family psychotherapy from one of the following mental health care providers: Marriage and Family Therapists (MFTs), Master’s Nurses (RNs), Medical Doctors (MDs), Professional Counselors (LPCs), Psychologists (PSYs), and Social Workers (MSWs). Results were compared across treatment modality, across practitioner license type and between practitioner educational levels. The results demonstrated that family therapy …

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The Paradox Of Masculinity In Shakespeare's Macbeth, Howayda Elenany Jun 2015

The Paradox Of Masculinity In Shakespeare's Macbeth, Howayda Elenany

Theses and Dissertations

This thesis analyzes the ambivalent definition of manhood in Shakespeare's Macbeth. It explores the normative cultural constructions of masculinity carried forth from ancient times to the Renaissance to situate the character of Macbeth in the realm of heroic masculinity. By applying the framework of Freud's psychoanalytic theory, particularly in its interpretation of gender and the role of the unconscious, Shakespeare's male hero's struggle to establish, maintain and defend his masculinity becomes comprehensible. The societal and cultural expectations that define masculinity appear at odds not only with the world of the play, but with the world in general. Culture and society …

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Determination Of Phthalate Esters In Egyptian Pet-Bottled Water Investigated Under Different Storage Conditions, Ghada Ismail Zaki Jun 2015

Determination Of Phthalate Esters In Egyptian Pet-Bottled Water Investigated Under Different Storage Conditions, Ghada Ismail Zaki

Theses and Dissertations

Phthalate esters are organic compounds that are extensively used in polymers manufacturing and many commercial products and can induce serious adverse health effects upon human exposure. The migration of phthalates esters from PET plastic bottles into water especially under poor storage conditions is subject to scientific debate. This study is the first to assess the occurrence of six phthalates in different branded PET bottled water locally produced in the Egyptian market. The samples were analyzed using liquid-liquid extraction with dichloromethane and GC/MS under various storage conditions. Among the six analyzed phthalates, three were detected at sub ppb levels where DEHP …

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Fabrication Of Garlic Composites Nano-Biotics And Investigating Their Anti-Bacterial Activities, Sherif Ashraf Saad Fahmy Jun 2015

Fabrication Of Garlic Composites Nano-Biotics And Investigating Their Anti-Bacterial Activities, Sherif Ashraf Saad Fahmy

Theses and Dissertations

Bacterial infections are considered the second main cause of death worldwide and the third main cause of death in the developed countries and as a result, many antibacterial coatings have been prepared in order to fight the different strains of bacteria and decrease the mortality rates. Natural antibacterial products become of great interest nowadays and their use is preferred over the synthetic products in order to overcome the resistance to the synthetic antibiotics. A wide variety of antibacterial coatings have been developed ranging from polymeric to polymer Nano-composites (PNCs) materials. Using nanomaterials as fillers within polymer matrices have been reported …

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Trade And Growth In The Relation Between China And Selected African Countries, Gehad Moawad Ismail Jun 2015

Trade And Growth In The Relation Between China And Selected African Countries, Gehad Moawad Ismail

Theses and Dissertations

China’s economic engagement with African countries has been substantially increasing, since 2001. The trade has accelerated as never before, African countries’ exports to China increased dramatically from US$ 3.1 billion in 2001 to US $31.2 billion in 2007. The growth of China – African relations has increased interest in trade, because it involves crucial issues for the development of African. Consequently, this thesis is trying to assess to what extent does Chinese state- led drive for resources in Africa, especially Sub- Saharan countries affect the economic growth of these countries. The answer to this question is quantitatively assessed, showing that …

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Non-Formal Education For A Sustainable Development Program In Cairo, Mennatallah Sabry Nada Jun 2015

Non-Formal Education For A Sustainable Development Program In Cairo, Mennatallah Sabry Nada

Theses and Dissertations

Education for Sustainable Development (ESD) is important for moving countries toward a sustainable future. In Egypt, ESD is not a common subject found in the national formal educational system, so non-formal education in ESD is needed. The research question is what is the best-suited structure for an experiential learning based ESD non-formal education program designed for private middle-school students in Egypt? To answer this question a review of existing international non-formal ESD programs and a needs assessment was conducted. The review examined five programs for common components; these components included activities such as experiments, camps, research, community engagement, general discussions …

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Effect Of Building Materials On Indoor Air Quality In Residential Buildings In Egypt: A Pre Occupancy Assessment, Dalia Wagdi Jun 2015

Effect Of Building Materials On Indoor Air Quality In Residential Buildings In Egypt: A Pre Occupancy Assessment, Dalia Wagdi

Theses and Dissertations

Materials selection and construction practices significantly affect Indoor Environmental Quality (IEQ). While there are many individual studies on the effect of building materials on thermal comfort, day lighting, and other factors of IEQ, further investigations are needed to study their effect on the Indoor Air Quality (IAQ) in hot arid climates, such as Egypt. Construction materials contribute to the emission of air pollutants in indoor environments; consequently occupants are exposed to multiple pollutants simultaneously as an apparent interaction between the different types of construction materials and room temperature. Limited information is published on specific standards and guidelines for the IAQ …

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Isolation And Host Range Of Staphylococcus Aureus Bacteriophages And Use For Decontamination Of Fomites, Kyle C. Jensen Jun 2015

Isolation And Host Range Of Staphylococcus Aureus Bacteriophages And Use For Decontamination Of Fomites, Kyle C. Jensen

Theses and Dissertations

Staphylococcus aureus is a common bacterium found on the skin and mucosal membranes of about 20% of the population. S. aureus growth on the skin is harmless, but if it bypasses the skin it can causes life-threatening diseases such as pneumonia, meningitis, bacteremia, and sepsis. Antibiotic-resistant strains of S. aureus, called Methicillin Resistant S. aureus (MRSA), are resistant to most antibiotics except vancomycin. However, vancomycin resistant strains of MRSA are becoming more common. In this study, 12 phages were isolated capable of infecting human S. aureus and/or MRSA strains. Five phages were discovered through mitomycin C induction of prophages and …

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Estimating Pinyon And Juniper Cover Across Utah Using Naip Imagery, Darrell B. Roundy Jun 2015

Estimating Pinyon And Juniper Cover Across Utah Using Naip Imagery, Darrell B. Roundy

Theses and Dissertations

Expansion of Pinus L. (pinyon) and Juniperus L. (juniper) (P-J) trees into sagebrush (Artemisia L.) steppe communities can lead to negative effects on hydrology, loss of wildlife habitat, and a decrease in desirable understory vegetation. Tree reduction treatments are often implemented to mitigate these negative effects. In order to prioritize and effectively plan these treatments, rapid, accurate, and inexpensive methods are needed to estimate tree canopy cover at the landscape scale. We used object based image analysis (OBIA) software (Feature AnalystTM for ArcMap 10.1®, ENVI Feature Extraction®, and Trimble eCognition Developer 8.2®) to extract tree canopy cover using NAIP (National …

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Botheration And Recognition Of Prescriptive Rules, Sara D. Smith Jun 2015

Botheration And Recognition Of Prescriptive Rules, Sara D. Smith

Theses and Dissertations

Passions flare up around the use and “misuse” of prescriptive rules. Where there is variation in language use, language judgment usually follows—attaching value judgment to linguistic variants forms the foundation of prescriptive ideology in English. Prescriptive attitudes prevail among speakers and writers of English, who feel some pressure to use these forms to avoid a negative judgment. This study surveyed American English speakers using Mechanical Turk to determine which types of rules—spelling, syntactic, morphological, and lexical—bother people the most and inspire the harshest judgments when violated. The surveys asked participants to identify a violated prescriptive rule in a sentence, found …

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Does Video Game Content Matter? An Examination Of Two Competing Ideas, Nathan J. Smith Jun 2015

Does Video Game Content Matter? An Examination Of Two Competing Ideas, Nathan J. Smith

Theses and Dissertations

The current paper addresses the associations between video game content (i.e., physically aggressive, relationally aggressive, and prosocial) and physical aggression, relational aggression, and prosocial behavior in two distinct developmental periods. The purpose of the paper is to test whether playing video games with a particular type of content influences behaviors over time, or whether individuals who have higher levels of physical aggression, relational aggression, or prosocial behavior prefer to play games with similar content. Two theories will be simultaneously examined and tested in order to determine the relative merit in using each in research examining the relationships between video game …

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Bioinformatics For The Comparative Genomic Analysis Of The Cotton (Gossypium) Polyploid Complex, Justin Thomas Page Jun 2015

Bioinformatics For The Comparative Genomic Analysis Of The Cotton (Gossypium) Polyploid Complex, Justin Thomas Page

Theses and Dissertations

Understanding the composition, evolution, and function of the cotton (Gossypium) genome is complicated by the joint presence of two genomes in its nucleus (AT and DT genomes). Specifically, read-mapping (a fundamental part of next-generation sequence analysis) cannot adequately differentiate reads as belonging to one genome or the other. These two genomes were derived from progenitor A-genome and D-genome diploids involved in ancestral allopolyploidization. To better understand the allopolyploid genome, we developed PolyCat to categorize reads according to their genome of origin based on homoeo-SNPs that differentiate the two genomes. We re-sequenced the genomes of extant diploid relatives of tetraploid cotton …

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Finnishness And Colonization In Akseli Gallen-Kallela's Representations Of Africa, Camille Kathryn Richey Jun 2015

Finnishness And Colonization In Akseli Gallen-Kallela's Representations Of Africa, Camille Kathryn Richey

Theses and Dissertations

Akseli Gallen-Kallela is often discussed as the national painter of Finland, as one who helped define Finnishness when Finland was still a colonized area of Russia. However, his trip to Africa from 1909-1911 shows where Gallen-Kallela acts as a pictorial colonizer himself, not only sympathizing with the Africans but representing them through a European cosmopolitan lens, as purer and closer to nature, but still inferior. The assumptions inherent in his representations of Africa reveal that Gallen-Kallela is not only a colonized subject but a colonizer of his own country.

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Interactions Between Social Support, Acculturationand Health Among Mexican Immigrants, Christopher D. Anderson Jun 2015

Interactions Between Social Support, Acculturationand Health Among Mexican Immigrants, Christopher D. Anderson

Theses and Dissertations

The impact of acculturation and poor social support as potential risk factors for cardiovascular and metabolic disease amongst Mexican immigrants to the United States (U.S.) is a developing area of research. One theory is that acculturation to U.S. society is negatively associated with health due to the stress of immigration as well as the less healthy diet and lifestyle in the U.S. It is also theorized that positive social support is associated with better health during immigration due to the buffering effect relationships have on stress. Despite these theories, mixed findings have been found regarding the associations between acculturation and …

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Electrophysiological Endophenotypes In Autism Spectrum Disorder: A Family Study, Ann Clawson Jun 2015

Electrophysiological Endophenotypes In Autism Spectrum Disorder: A Family Study, Ann Clawson

Theses and Dissertations

Autism spectrum disorder (ASD) is a highly heritable neurodevelopmental disorder associated with altered neural connectivity and deficits in self-monitoring, response inhibition, and planning. One promising avenue of research to improve understanding of the symptoms and heritable nature of ASD may be the identification of neural endophenotypes of ASD. The error-related negativity (ERN) and post-error positivity (Pe), scalp-recorded event-related potentials (ERPs), reflect performance monitoring processes and may qualify as candidate endophenotypes of ASD. We collected ERP and behavioral data (error rates, response times) from 18 ASD probands and their families (mother, father, sibling) and 38 control youth and their parents to …

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Will Ultrasound Performed With The Rich-Mar Autosound™ Be As Effective At Increasing Tissue Temperature As Ultrasound Performed With A Traditional Machine?, Heather Diane Black Jun 2015

Will Ultrasound Performed With The Rich-Mar Autosound™ Be As Effective At Increasing Tissue Temperature As Ultrasound Performed With A Traditional Machine?, Heather Diane Black

Theses and Dissertations

STUDY DESIGN: Randomized crossover experiment. OBJECTIVE: To determine whether the Rich-Mar AutoSound™ would be as effective as traditional ultrasound at increasing the temperature of the triceps surae muscle during a 10-min, 1 MHz, 1.0 W/cm2 ultrasound treatment. BACKGROUND: The AutoSound™ is a hands-free ultrasound device that is strapped on the body and left for the duration of the ultrasound treatment. It requires no clinician during the actual ultrasound treatment, thus freeing the clinician to perform other tasks and reducing clinician error during treatments. METHODS: 16 healthy subjects (6 males, 10 females, age = 22 ± 1.6 yrs, height = 173.2 …

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Environmental And Adaptive Buffers That Mediate The Response Of Subalpine Ecosystems To Environmental Change, Lafe G. Conner Jun 2015

Environmental And Adaptive Buffers That Mediate The Response Of Subalpine Ecosystems To Environmental Change, Lafe G. Conner

Theses and Dissertations

This document reports the results of 4 studies of subalpine ecosystem ecology, describing ways that spatial heterogeneity in soils and plant communities mediate ecosystem responses to environmental change. Ecosystem responses to environmental change are also mediated by regional climate patterns and interannual variability in weather. In the first chapter we report the results of an experiment to test for the mediating effects of associational resistance in a forest community that experienced wide-spread beetle kill. We found that Engelmann spruce were more likely to survive a beetle outbreak when growing in low densities (host dilution) and not through other types of …

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Studies On The Roles Of Translationally Recoded Proteins From Cyclooxygenase-1 And Nucleobindin Genes In Autophagy, Jonathan J. Lee Jun 2015

Studies On The Roles Of Translationally Recoded Proteins From Cyclooxygenase-1 And Nucleobindin Genes In Autophagy, Jonathan J. Lee

Theses and Dissertations

Advances in next-generation sequencing and ribosomal profiling methods highlight that the proteome is likely orders of magnitude larger than previously thought. This expansion potentially occurs through translational recoding, a process that results in the expression of multiple variations of a protein from a single messenger RNA. Our laboratory demonstrated that cyclooxygenase-3/1b (COX-3/1b), a frameshifted, intron-1-retaining, alternative splice variant from the COX-1 gene, is multiply recoded, which results in the translation of at least seven different COX-3 proteins. Two of the recoded COX-3 proteins that we identified are active prostaglandin synthases and are inhibited by non-steroidal anti-inflammatory drugs (NSAIDs). Here we …

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Metagenomic Profiling Of Microbial Metal Interaction In Red Sea Deep-Anoxic Brine Pools, Mina Magdy Abdelsayed Hanna Jun 2015

Metagenomic Profiling Of Microbial Metal Interaction In Red Sea Deep-Anoxic Brine Pools, Mina Magdy Abdelsayed Hanna

Theses and Dissertations

Extreme environmental conditions induce evolution of microbiomes and shape microbial abundance. Different geochemical studies reported high metal abundance in Red Sea deep-anoxic brine pools, especially in Atlantis II Deep, which has the highest metals content. Brine pools show wide diversity of biologically essential and non-essential metals. Several metals known for their toxicity to biological life were detected in these pools. Yet, previous microbiome analyses of the pools demonstrated vast microbiological diversity. In this study, we compare metal-resistant prokaryotic microbiomes in different metal-rich brine water samples from Atlantis II lower convective layer (ATII-LCL), Atlantis II upper convective layer (ATII-UCL), Discovery Deep …

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Optimum Design Of Rc Affordable Housing, Amr Mostafa Hussein Fathy Jun 2015

Optimum Design Of Rc Affordable Housing, Amr Mostafa Hussein Fathy

Theses and Dissertations

Efforts have been made to minimize the cost of affordable housing through modular construction, prefabrication, economies of scale and low cost materials. However, there is a gap in the literature regarding the integration of the varying sizes of the units with design optimization to mutually benefit developers and potential residents of affordable homes. This research introduces an optimization model to integrate optimization with ranges of units' dimensions. The model proposed exploits the variations in the reinforced concrete cost versus area through applying several scenarios. Available options are tailored to optimize the reinforced concrete floor cost of housing units through varying …

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