Digital Commons Network^™

Cytogenetic Investigations And Y-Chromosome Microdeletion Screening In Some Infertile Kurdish Males In Erbil Province/ Iraq, Muhsin Jamil Abdulwahid, Mustafa Saber Al-Attar, Rozhgar Abdullah Mohammed

Baghdad Science Journal

Infertility is a disease of the reproductive system defined by the failure to achieve a clinical pregnancy after 12 months or more of regular unprotected sexual intercourse. Worldwide, infertility affects approximately 15% of all couples trying to conceive. Male infertility is responsible for about 50% of the infertility cases. Chromosomal abnormalities and Y-chromosome microdeletions are the most common genetic causes of male infertility. Klinefelter syndrome (KS) is the most prevalent factor of the chromosomal abnormality in the infertile male. Azoospermia Factor (AZF) microdeletions located on the Y chromosome are one of the recurrent genetic cause of male infertility. This study …

Enhancement Ear-Based Biometric System Using A Modified Adaboost Method, Abdulkareem Merhej Radhi, Subhi Aswad Mohammed

Baghdad Science Journal

The primary objective of this paper is to improve a biometric authentication and classification model using the ear as a distinct part of the face since it is unchanged with time and unaffected by facial expressions. The proposed model is a new scenario for enhancing ear recognition accuracy via modifying the AdaBoost algorithm to optimize adaptive learning. To overcome the limitation of image illumination, occlusion, and problems of image registration, the Scale-invariant feature transform technique was used to extract features. Various consecutive phases were used to improve classification accuracy. These phases are image acquisition, preprocessing, filtering, smoothing, and feature extraction. …

Simultaneous Ratio Derivative Spectrophotometric Determination Of Paracetamol, Caffeine And Ibuprofen In Their Ternary Form, Khalaf F. Alsamarrai, Suham Tawfeq Ameen

Baghdad Science Journal

A new, accurate, precise and economic two spectrophotometric methods for determination of Paracetamol (Par), Ibuprofen (Ibu), and Caffeine (Caf) were suggested. Those methods were the first and second ratio derivative spectrum using a double devisor. Par, Ibu, and Caf showed many useful peaks for their quantified determination. The validity of all analysis modes for determination of the three compounds, peak to baseline, peak area and peak to peak were according to ICH. The linearity of two methods was between 5 µg/ml as a lower concentration and 50 µg/ml as the highest concentration for three compounds. Recovery percentage was around 100% …

Predictive Significance Of Interleukins 17a And 33 In Risk Of Relapsing–Remitting Multiple Sclerosis, Milad Abdul Salam Al-Naseri, Ali Hussein Ad’Hiah, Ehab Dawood Salman

Baghdad Science Journal

Cytokines are signaling molecules between inflammatory cells that play a significant role in the pathogenesis of a disease. Among these cytokines are interleukins (ILs) 17A and 33, and accordingly, the current case-control study sought to investigate the role of each of the two cytokines in the risk of developing multiple sclerosis (MS). Sixty-eight relapsing-remitting MS (RRMS) Iraqi patients and twenty healthy individuals (control group) were enrolled. Enzyme linked immunosorbent assay (ELISA) kits were used to determine serum levels of IL-17A and IL-33. Results revealed that IL-17A and IL-33 levels were significantly higher in MS patients than in controls (14.1 ± …

Describing Polymers Synthesized From Reducing Sugars And Ammonia Employing Ftir Spectroscopy, Ghassan Faisal Mohsin, Wasan J. Al-Kaabi, Azalldeen Kazal Alzubaidi

Baghdad Science Journal

Melanoidins can be diagnosed using the Fourier transform infrared (FTIR) technique. UV/Vis is an effective tool for both qualitative and quantitative analysis of chemical components in melanoidin polymers. The structural and vibrational features of melanoidin synthesized from D-glucose and D-fructose are identical, according to FTIR spectra, with the only difference being the intensity of bands. Using FTIR spectra, the skeleton of melanoidin is divided into seven major regions. The existence of the C=C, C=N, and C=O groups in all melanoidins formed from fructose and glucose with ammonia is confirmed by the areas ranging from 1600 to 1690 cm-1, and the …

Determination Of Nickel And Cobalt In Cosmetic Products Marketed In Iraq Using Spectrophotometric And Microfluidic Paper-Based Analytical Device (Μpads) Platform, Ekhlas A. Abdulkareem, Jwan O. Abdulsattar

Baghdad Science Journal

Two quantitative, environment-friendly and easily monitored assays for Ni (II) and Co (III) ions analysis in different lipstick samples collected from 500-Iraqi dinars stores located in Baghdad were introduced. The study was based on the reaction of nickel (II) ions with dimethylglyoxime (DMG) reagent and the reaction of cobalt (III) ions with 1-nitroso-2-naphthol (NN) reagent to produce colored products. The color change was measured by spectrophotometric method at 565 nm and 430 nm for Ni and Co, respectively, with linear calibration graphs in the concentration range 0.25-100 mg L-1 (Ni) and 0.5-100 mg L-1 (Co) and LOD and LOQ of …

Dc-Sign Receptor Level In Rheumatoid Arthritis Patients In Baghdad; Serological Study, Hayam A. Mohammed, Zahra’A A. Ahmed, Aymen A. Othman Alrawi

Baghdad Science Journal

Rheumatoid arthritis (RA), is an autoimmune, and inflammatory disease that is closely related to the destruction of cartilage and bone. DC-SIGN are important types of C-type lectin receptors (CLRs), expressed on dendritic cells and macrophages, and have a central role in regulating innate and adaptive immunity, function as pattern recognition receptors, and as cell adhesion molecules. Recent evidence has demonstrated that DC-SIGN is involved in the pathophysiological of chronic inflammation, so DC-SIGN has been linked to several autoimmune and may play an essential indicator in the pathogenesis and progression of RA. Therefore, the purpose of this study is to determine …

Association Of Potent Inflammatory Cytokine And Oxidative Dna Damage Biomarkers In Stomach Cancer Patients, Akam Jasim Mustafa, Parween Abdulsamad Ismail

Baghdad Science Journal

The infection with H. Pylori stimulates a signaling cascade that causes the generation of Cytokines and provokes Oxidative stress that is involved in the chronic inflammatory response leads to Gastric cancers. Reactive oxygen species (ROS) produce 8-Hydroxydeoxyguanosine (8-OHdG), the persistent oxidative DNA damage product. The study objective was to assess if there was a link between inflammatory cytokine levels and the presence of Oxidative DNA damage in Gastric tumor patients. In addition, evaluation of the diagnostic and prognostic value of Oxidative DNA damage and inflammatory cytokine biomarkers for Stomach cancers is being conducted. The study was accomplished on medically diagnosed …

Synthesis, Spectral Identification, Antibacterial Evaluationand Theoretical Study Of Co, Fe, Rh And Pd Complexes For 2-Benzoylthiobenzimidazol, Israa H. Ibraheem, Amaal S. Sadiq, Maha Al-Tameemi, Mahasin F. Alias

Baghdad Science Journal

A new novel series of metalcomplexes are prepared from reactions between 2-benzoylthio- benzimidazole (L) with metal salts of Co (II) , Fe(III) and Rh (III) , while Pd(II) complex was obtained by mixing ligandsof 2-benzoylthiobenzimidazole (L) as primary ligand and bipyridine (L/)as secondary ligand as well as palladium chloride as metal salt in an ethanoic medium. The geometry of these compounds were identified using C.H.N.microanalysis, Ultraviolet–visible, Fourier transforms infrared, magnetic susceptibility, molar conductivity and flame atomic absorption (A.A). From the dataobtained by these spectral analyses, the molecular structures for Rh and Fe complexes were proposed to be octahedral geometry. A …

Immunoglobulin G N-Glycan, Inflammation And Type 2 Diabetes In East Asian And European Populations: A Mendelian Randomization Study, Biyan Wang, Di Liu, Manshu Song, Wei Wang, Bo Guo, Youxin Wang

Research outputs 2022 to 2026

Background: Immunoglobulin G (IgG) N-glycans have been shown to be associated with the risk of type 2 diabetes (T2D) and its risk factors. However, whether these associations reflect causal effects remain unclear. Furthermore, the associations of IgG N-glycans and inflammation are not fully understood. Methods: We examined the causal associations of IgG N-glycans with inflammation (C-reactive protein (CRP) and fibrinogen) and T2D using two-sample Mendelian randomization (MR) analysis in East Asian and European populations. Genetic variants from IgG N-glycan quantitative trait loci (QTL) data were used as instrumental variables. Two-sample MR was conducted for IgG N-glycans with inflammation (75,391 and …

External-Memory Dictionaries With Worst-Case Update Cost, Rathish Das, John Iacono, Yakov Nekrich

Michigan Tech Publications, Part 1

The Bϵ-tree [Brodal and Fagerberg 2003] is a simple I/O-efficient external-memory-model data structure that supports updates orders of magnitude faster than B-tree with a query performance comparable to the B-tree: for any positive constant ϵ < 1 insertions and deletions take O(B11-ϵ logB N) time (rather than O(logB N) time for the classic B-tree), queries take O(logB N) time and range queries returning k items take O(logB N + Bk) time. Although the Bϵ-tree has an optimal update/query tradeoff, the runtimes are amortized. Another structure, the write-optimized skip list, introduced by Bender et al. [PODS 2017], has the same performance as the Bϵ-tree but with runtimes that are randomized rather than amortized. In this paper, we present a variant of the Bϵ-tree with deterministic worst-case running times that are identical to the original’s amortized running times.

Water-Soluble Saponins Accumulate In Drought-Stressed Switchgrass And May Inhibit Yeast Growth During Bioethanol Production, Sarvada Hemant Chipkar, Katherine Smith, Elizabeth M. Whelan, Derek J. Debrauske, Annie Jen, Katherine A. Overmyer, Andrea Senyk, Larkin Hooker-Moericke, Marissa Gallmeyer, Joshua J. Coon, A. Daniel Jones, Trey K. Sato, Rebecca G. Ong

Michigan Tech Publications, Part 1

Background: Developing economically viable pathways to produce renewable energy has become an important research theme in recent years. Lignocellulosic biomass is a promising feedstock that can be converted into second-generation biofuels and bioproducts. Global warming has adversely affected climate change causing many environmental changes that have impacted earth surface temperature and rainfall patterns. Recent research has shown that environmental growth conditions altered the composition of drought-stressed switchgrass and directly influenced the extent of biomass conversion to fuels by completely inhibiting yeast growth during fermentation. Our goal in this project was to find a way to overcome the microbial inhibition and …

Examining The Perceived Benefits Of A Career Course For English-Speaking First-Generation Hispanic And Latino Students, David Benjamin Mason

Electronic Theses and Dissertations

The problem that provoked this research is the incessant, declining retention, completion, and transfer rates among English-speaking, first-generation Hispanic and Latino students. Educational institutions continue to increase services, improve academic programs, enhance curriculum design, integrate technology, and consider alternative career paths to success with marginal to no improvement. The purpose of this study was to determine the perceived benefits of English-speaking, first-generation Hispanic and Latino students who participated in a career course instructed by a career professional compared to a course instructed by an academic adjunct faculty member. Developing one’s career remains a vital aspect of the college experience, and …

English And Russian Guitars In Poland: A Summary Of Sources Using Open-G Tuning, From The Nineteenth Century To The Present Day, Wojciech Gurgul

Soundboard Scholar

Polish sources related to the guitar in open-G tuning are a little-explored area of guitar scholarship — one, however, well worthy of introduction. We can distinguish two groups of such sources, according to the period and the type of guitar intended: the first group consists of publications and manuscripts for the English guitar from the first two decades of the nineteenth century; the second consists of publications for the Russian seven-string guitar from the first four decades of the twentieth century. These two instruments were cultivated in Poland contemporaneously with the Spanish guitar. The Spanish guitar, however, garnered a significantly …

Luigi Legnani's Missing Opus 9, Robert Coldwell

Soundboard Scholar

The guitar composer Luigi Legnani (1790–1877) published some 250 works with opus number, most of them for solo guitar. His catalog, however, contains many gaps. This article explores the particular circumstances of the discovery of Legnani's opus 9, focusing on Legnani’s possible contact with the French guitarist Luigi [Louis] Sagrini (1809–74).

Matanya Ophee’S Contributions To Soundboard Magazine: A Retrospective, Stanley Yates

Soundboard Scholar

The guitar historian Matanya Ophee's writings in Soundboard span almost his entire career as a researcher. In this restrospective, Stanley Yates surveys Ophee's work in general before offering a bibliography and commentary on his contributions to Soundboard: articles, reviews, and columns.

Asset Pricing With Cohort-Based Trading In Mbs Markets, Nicola Fusari, Wei Li, Haoyang Liu, Zhaogang Song

Research Collection Lee Kong Chian School Of Business

Agency mortgage-backed securities (MBSs) with diverse characteristics are traded in parallel through individualized specified pool (SP) contracts and standardized to-be-announced (TBA) contracts with delivery flexibility. This parallel trading environment generates distinctive effects on MBS pricing and trading: (i) Although cheapest-to-deliver (CTD) issues are present in TBA trading and absent from SP trading by design, MBS heterogeneity associated with CTD discounts affects SP yields positively, with the effect stronger for lower-value SPs; (ii) high selling pressure amplifies the effects of MBS heterogeneity on SP yields; and (iii) greater MBS heterogeneity dampens SP and TBA trading activities but increases their ratio.

Les Facteurs Qui Influencent L'Émergence D'Un Sentiment D'Injustice Suite À Un Accident Du Travail, Michael J. L. Sullivan, Manon Truchon, Pierre Coté, Marie Achille

Rapports de recherche scientifique

De nombreuses études ont rapporté que des niveaux élevés de sentiment d’injustice sont associés à un rétablissement problématique chez les personnes souffrant d’un large éventail de problèmes débilitants de santé et de santé mentale. On en sait peu actuellement sur les facteurs déterminants du sentiment d’injustice dans les suites immédiates d’un accident du travail, ou sur les facteurs déterminants des changements dans le sentiment d’injustice.

L’objectif principal de cette recherche était d’identifier les déterminants du sentiment d’injustice dans les premières semaines suivant un accident du travail. L’échantillon de participants comprenait 187 personnes (92 hommes et 95 femmes) ayant subi une …

Multiscale Topology Optimization With A Strong Dependence On Complementary Energy, Dustin Dean Bielecki

All Dissertations

A discrete approach introduces a novel deep learning approach for generating fine resolution structures that preserve all the information from the topology optimization (TO). The proposed approach utilizes neural networks (NNs) that map the desired engineering properties to seed for determining optimized structure. This framework relies on utilizing parameters such as density and nodal deflections to predict optimized topologies. A three-stage NN framework is employed for the discrete approach to reduce computational runtime while maintaining physics constraints.

A continuous representation that uses complementary energy (CE) methods to solve a representative element's homogenized properties consists of an embedded structure that is …

Machine Learning Models For Human Synapse Genomics, Anqi Wei

All Dissertations

In the central nervous system, synapses are essential junctions that connect neurons and play important roles in neurotransmission and synaptic plasticity. While there are many challenges in human synapse genomics, machine learning techniques, which are capable of mining and interpreting large amounts of genomic data, may be utilized to facilitate the functional studies of human synapses. In this study, we have developed machine learning models for human synapse genomics to address several biological problems.

RNA localization plays an important role at the synapse, allowing local protein synthesis required for synaptic plasticity during brain development. Previous studies were conducted in mice …

Pedagogical Data Literacy With A Multi-Tiered System Of Supports: A Mixed Methods Study Of Teachers Using Data-Driven Reading Instruction In A Title I School, Paula Alexander

All Dissertations

The purpose of this research study was to examine how teachers use pedagogical data literacy methods using the South Carolina Multi-Tiered System of Supports (SCMTSS) framework, and its influence on positive student outcomes in reading achievement for all students and students receiving reading intervention supports in Kindergarten through third grade.

Teachers' pedagogical data literacy, or the intersection of educators' knowledge and skills to transform the data into instructional strategies to meet students' needs, provides a lens to fulfill the SCMTSS framework approach of using data-based problem solving to maximize growth of all students. This research study identified SCMTSS Tier I …

In Vitro Bioreactor For Mechanical Control And Characterization Of Tissue Constructs, Samuel Coeyman

All Dissertations

Heart failure (HF) currently affects over 6 million Americans, 50% of whom die within 5 years of their initial diagnosis. A major contributor to the onset of HF is cardiac fibrosis in the myocardium, which arises when fibroblasts (FBs) are activated in response to heightened mechanical stress from overload conditions like hypertension. Activated FBs remodel the extracellular matrix (ECM) and secrete ECM proteins including collagen. FB remodeling has been studied in the past by applying forces and/or deformations to three-dimensional, cell-seeded gels and tissue constructs in vitro. Unfortunately, previous stretching platforms have traditionally not enabled mechanical property assessment to be …

The Experience Of Severe Food Allergy At Residential Camp, Alexsandra Dubin

All Dissertations

Severe food allergy is an emerging issue in public, educational, and recreational spaces, as the condition rises in prevalence and severity (Capucilli et al., 2019). Nearly all camps serve children with food allergies (Schellpfeffer et al., 2020). Research focusing on documenting rates of food allergy, anaphylaxis management, and food allergy management in summer camps has been foundational to ensuring a safe experience for youth attending camp (Gonzalez-Mancebo et al., 2019; Schellpfeffer et al., 2020). However, less research has focused on the socio-emotional impacts of attending camp with a food allergy or exploring how children with food allergy experience summer camp …

Influence Of Climate And Droughts On Visibility Degradation In Saudi Arabia, Saleh Alhathloul

All Dissertations

The spatial and temporal distribution of temperature and precipitation determines the availability of water resources for ecosystems. The hydrological cycle can be disrupted by differences in meteorological variables and the random nature of water demand. Horizontal visibility degradation is an indicator of the changes in local meteorological variables, rainfall deficits, and drought conditions. Long-term analysis of meteorological variables and visibility records helps understand the causes of visibility degradation. The first objective of this dissertation is to investigate the long-term variability of horizontal visibility along with metrological variables based on annual and seasonal time scales over Saudi Arabia. The second objective …

Effect Of Crosslinking Agent (Zinc Chloride) On The Swelling Ratio And Water Retention Capacity Of Polyacrylate And Polyvinyl Alcohol, Saja Kadhim, Awham M. Hameed, Rashed T. Rasheed

Journal of Applied Sciences and Nanotechnology

In this study, using potassium polyacrylate (KPA), polyvinylalcohol (PVA), and zinc chloride as cross-linking agents, successfully synthesized novel superabsorbent polymers. Different weight ratios of KPA and PVA were used to prepare the polymers using polymerization solution. So, polymers with different weight ratios made from PVA and KPA. Superabsorbent polymers (SAPs) were produced using a simple approach at ambient temperature. By comparing absorption peaks, Fourier transform infrared spectroscopy (FTIR) and UV analysis were utilized to investigate the molecular interactions. The morphology of superabsorbent polymers was investigated by scanning electron microscopy (SEM). According to FT-IR, UV, and SEM results, the superabsorbent polymers …

Heterogeneous Paths Of Industrialization, Federico Huneeus, Richard Rogerson

Cowles Foundation Discussion Papers

Industrialization experiences differ substantially across countries. We use a benchmark model of structural change to shed light on the sources of this heterogeneity and, in particular, the phenomenon of premature deindustrialization. Our analysis leads to three key findings. First, benchmark models of structural change robustly generate hump-shaped patterns for the evolution of the industrial sector. Second, heterogeneous patterns of catch-up in sectoral productivities across countries can generate variation in industrialization experiences similar to those found in the data, including premature deindustrialization. Third, differences in the rate of agricultural productivity growth across economies can account for the majority of the variation …

Interview With Ellie Wilhite, Utah State University Special Collections & Archives

Utah State University COVID-19 Oral History Collection

No abstract provided.

Interview With David Vernon, Utah State University Special Collections & Archives

Utah State University COVID-19 Oral History Collection

No abstract provided.

Interview With Dirk Vanderwall, Utah State University Special Collections & Archives

Utah State University COVID-19 Oral History Collection

No abstract provided.

Interview With Larry Smith, Utah State University Special Collections & Archives

Utah State University COVID-19 Oral History Collection

No abstract provided.