Open Access. Powered by Scholars. Published by Universities.®

Biology Commons

Open Access. Powered by Scholars. Published by Universities.®

36,012 Full-Text Articles 70,131 Authors 6,956,581 Downloads 348 Institutions

All Articles in Biology

Faceted Search

36,012 full-text articles. Page 1 of 1267.

Oil Identification Of Harp Seal And Other Select Marine Mammals, Meghan Pinedo, Deborah A. Duffield, Dalin N. D’Alessandro, Erin R. Price, Edgard O. Espinoza 2024 US Forest Service International Programs Wood Identification and Screening Center, Ashland

Oil Identification Of Harp Seal And Other Select Marine Mammals, Meghan Pinedo, Deborah A. Duffield, Dalin N. D’Alessandro, Erin R. Price, Edgard O. Espinoza

Biology Faculty Publications and Presentations

Because of the rich omega-3 fatty acids content, harp seal (Pagophilus groenlandicus) oil is a popular supplement that is packaged as pills in Canada and sold for medicinal purposes, although this practice is banned in the United States. Due to US regulations, it is important to be able to distinguish between fish oil and seal oil, but the taxonomic determination of oils provenance has been a difficult problem to solve. In this study, Direct Analysis in Real Time time-of-flight mass spectrometry (DART TOFMS) was used to analyze the chemotypes of blubber samples collected from seven species of …


Utilizing Biomimicry To Design Sustainable Architecture, Virginia Hammond 2024 University of Arkansas, Fayetteville

Utilizing Biomimicry To Design Sustainable Architecture, Virginia Hammond

Architecture Undergraduate Honors Theses

Nature has an integral relationship with architecture and serves as a sustainable role model and inspiration for designers. The process of biomimicry in architecture has the potential to produce more sustainable design solutions and foster a connection between humans and nature. Existing biomimetic design projects have varying strengths and weaknesses as examples of the process. Utilizing guidelines and references from key leaders in biomimetic design consultancy (Biomimicry 3.8), selected case studies are assessed for their ability to demonstrate the benefits of this design strategy. Using these evaluations, the case studies are diagrammed and critiqued to determine how new projects could …


Unravelling The Genetic Basis Of Schizophrenia, Clara Casey, John F. Fullard, Roy D. Sleator 2024 Department of Biological Sciences, Munster Technological University, Bishopstown, Cork, Ireland; Center for Disease Neurogenomics, Icahn School of Medicine at Mount Sinai, New York, NY 10029, United States; Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029, United States;

Unravelling The Genetic Basis Of Schizophrenia, Clara Casey, John F. Fullard, Roy D. Sleator

Department of Biological Sciences Publications

Neuronal development is a highly regulated mechanism that is central to organismal function in animals. In humans, disruptions to this process can lead to a range of neurodevelopmental phenotypes, including Schizophrenia (SCZ). SCZ has a significant genetic component, whereby an individual with an SCZ affected family member is eight times more likely to develop the disease than someone with no family history of SCZ. By examining a combination of genomic, transcriptomic and epigenomic datasets, large-scale ‘omics’ studies aim to delineate the relationship between genetic variation and abnormal cellular activity in the SCZ brain. Herein, we provide a brief overview of …


Investigations Of The Eutectic Formation And Skin Rejuvenation By Hyaluronan - Kojic Acid Dipalmitate System, Syed Waqar Hussain Shah, Sumbal Imran, Iram Bibi, Kashif Ali, Nadia Bashir 2024 Department of Chemistry, Hazara University, Mansehra, Pakistan

Investigations Of The Eutectic Formation And Skin Rejuvenation By Hyaluronan - Kojic Acid Dipalmitate System, Syed Waqar Hussain Shah, Sumbal Imran, Iram Bibi, Kashif Ali, Nadia Bashir

Karbala International Journal of Modern Science

Eutectic phenomenon has been investigated in binary system based on biopolymer hyaluronan (HN) and kojic acid dipalmitate (KAD). Solid-liquid phase diagram showed a significant dependence of melting points on weight fraction of KAD up to KAD < 0.5. A negligible regain to melting temperature of pure KAD occurred later. Simulations of molecular mechanics using a four-unit segment of HN and KAD revealed the interaction between carbonyl of KAD with 4-OH on N-acetylglucosamine unit of oligomer. Infrared vibrational spectroscopy also endorsed the existence of a weakly interacting system. Such behavior was expected due to steric hinderance and rigidity of biopolymer. The thermal decomposition temperature of HN (i.e., 215 °C) was increased to 322 °C in HK50 having HN and KAD in 1:50 w/w. Bioelectric impedance analysis revealed that these green materials could promote skin health in humans.


Synthesis And Characterization Of Renewable Heterogeneous Catalyst Zno Supported Biogenic Silica From Pineapple Leaves Ash For Sustainable Biodiesel Conversion, Nadila Pratiwi, Suriati Eka Putri, Yulia Shinta, Arya Ibnu Batara, Diana Eka Pratiwi, Abd Rahman, Nur Ahmad, Heryanto Heryanto 2024 Department of Chemistry, Faculty of Mathematics and Natural Science, Universitas Negeri Makassar, Makassar, South Sulawesi, Indonesia;

Synthesis And Characterization Of Renewable Heterogeneous Catalyst Zno Supported Biogenic Silica From Pineapple Leaves Ash For Sustainable Biodiesel Conversion, Nadila Pratiwi, Suriati Eka Putri, Yulia Shinta, Arya Ibnu Batara, Diana Eka Pratiwi, Abd Rahman, Nur Ahmad, Heryanto Heryanto

Karbala International Journal of Modern Science

This study reports on the first case of the low-cost and environmentally friendly ZnO/SiO2 heterogeneous catalyst from pineapple leaves ash (PLA). Catalyst shows excellent performance in catalyzing the transesterification of waste cooking oil (WCO) with methanol for biodiesel conversion. This study focuses on assessing the influence of Zn content on physicochemical characteristics, using XRD, FTIR, SEM, and N2 adsorption-desorption methods. In addition, three different Zn content levels (20, 25, and 30 %wt) were applied. The results showed that all ZnO/SiO2 samples exhibited characteristics suitable for use as catalyst with an average crystallite size of 31.83-34.15 nm, and a surface area …


Dissecting The Impact Of Medicinal Plants On Systemic Diseases, Karen Ayetiwa 2024 Roseman University of Health Sciences

Dissecting The Impact Of Medicinal Plants On Systemic Diseases, Karen Ayetiwa

Annual Research Symposium

For this literature review, a range of databases were used such as Google Search, PubMed, and Web of Science (mentioned all the ones you used). The search strategy used was a combination of terms such as "medicinal plant compounds," "plant polysaccharides on metabolic diseases," "effects of berberine on diabetes mellitus," " and "effects of medicinal plants on Alzheimer's." Articles chosen for review were published between 2020 and 2022, and only studies in the English language were considered. The majority of the selected studies were devised to observe and analyze the effects of medicinal plant compounds on various systemic diseases. Medicinal …


Biology Department Publications: 2023, Sam Lindgren 2024 Washington University in St. Louis

Biology Department Publications: 2023, Sam Lindgren

Biology Department Bibliographies

This document is a non-comprehensive list of publications made by graduate students, post-doctoral researchers, and faculty members in the Biology Department in 2023. It indexes those publications available through PubMed and Scopus, and serves as an archival record of the Department’s robust scholarly contributions.


Butterworth Filter To Reduce Reactivity Fluctuations, Daniel Suescún-Díaz, Geraldyne Ule-Duque, Luis E. Cardoso-Páez 2024 Department of Natural Sciences, Avenida Pastrana, Universidad Surcolombiana, Neiva, Huila, Colombia

Butterworth Filter To Reduce Reactivity Fluctuations, Daniel Suescún-Díaz, Geraldyne Ule-Duque, Luis E. Cardoso-Páez

Karbala International Journal of Modern Science

In this study, we introduce the calculation of reactivity in nuclear reactors. The proposed method uses the Euler-Maclaurin series to approximate the integral in the inverse equation of point kinetics. The approximation is done with the first three terms, the first term represents the approximation of a zero-order sum, the second term the trapezoidal rule and the third term the first Bernoulli number. These three terms improve the approximation, along with an estimate of the neutron density using the prompt jump approximation. To reduce neutron density fluctuations, a second-order Butterworth filter for the reactivity calculation was implemented, which offers the …


Investigating Optimal Laboratory Growth Conditions Of Gracilibacillus Halotolerans In Media Supplemented With Salt, Isaac Young 2024 Roseman University of Health Sciences

Investigating Optimal Laboratory Growth Conditions Of Gracilibacillus Halotolerans In Media Supplemented With Salt, Isaac Young

Annual Research Symposium

As interest continues to grow in the field of persister cells and their morphology, there arises an ever-evolving desire to further understand specific strains of bacteria that exemplify the qualities of seemingly anomalous survival regardless of anti-bacterial treatment. In the case of the Gracilibacillus halotolerans, a halotolerant extremophile extracted from the Great Salt Lake with known persistent characteristics, uncovering its optimal growth conditions was essential for future investigations. Identifying the optimal salinity for the growth of G. halotolerans will allow us to standardize our growth methods, uncover several mechanisms of saline tolerance, and add to future investigations of persistence with …


Impairment Of The Glial Phagolysosomal System Drives Prion-Like Propagation Of Huntington’S Disease, Graham Davis 2024 Rowan University

Impairment Of The Glial Phagolysosomal System Drives Prion-Like Propagation Of Huntington’S Disease, Graham Davis

Theses and Dissertations

The ability of glia to tightly regulate neuronal health and homeostasis in the CNS is conserved across species. Yet, despite the ability to degrade protein aggregates, glia are vulnerable to the accumulation of neurotoxic amyloid aggregates during neurodegenerative disease progress, and even exacerbate their spread. A developing narrative highlights glia as a double-edged sword in neurodegenerative diseases: initially capable of dynamically responding to amyloid aggregate-ladened dying neurons but also capable of inducing chronic inflammation and creating seeding-competent amyloid oligomers. Thus, uncovering the mechanisms that allow glia to control aggregate deposition while preventing the neurotoxic effects and seed generation is vital …


Dorsal Fin Innervation Of The Bluegill, Lepomis Macrochirus, Amanda Torick 2024 Rhode Island College

Dorsal Fin Innervation Of The Bluegill, Lepomis Macrochirus, Amanda Torick

Honors Projects

Recent work has shown that the dorsal fins in fish operate not only as locomotive appendages, but also as sensory structures that aid in proprioception. To investigate how fish use these structures for sensing, the innervation of the dorsal fins in bluegill sunfish (Lepomis macrochirus) was assessed through immunohistochemistry assays. I conducted staining using anti-acetylated tubulin (AAT), a non-specific neuron marker, calcitonin-gene related peptide (CGRP) which stains sensory neurons and cytokeratin 20 (CK20), which binds to mechanoreceptor structures. Stained samples of bluegill dorsal fins were imaged under a laser scanning epifluorescence microscope to visualize mechanoreceptors, as well as sensory and …


Machine Learning Model And Molecular Docking For Screening Medicinal Plants As Hiv-1 Reverse Transcriptase Inhibitors, Muthia Rahayu Iresha, Firdayani Firdayani, Agam Wira Sani, Nihayatul Karimah, Shelvi Listiana, Irfansyah Yudhi Tanasa, Arief Sartono, Ayu Masyita 2024 Research Center for Vaccine and Drugs, National Research and Innovation Agency (BRIN), South Tangerang, Indonesia

Machine Learning Model And Molecular Docking For Screening Medicinal Plants As Hiv-1 Reverse Transcriptase Inhibitors, Muthia Rahayu Iresha, Firdayani Firdayani, Agam Wira Sani, Nihayatul Karimah, Shelvi Listiana, Irfansyah Yudhi Tanasa, Arief Sartono, Ayu Masyita

Karbala International Journal of Modern Science

The human immunodeficiency virus type 1 reverse transcriptase (HIV-1 RT) plays a significant role in viral replication and is one of the targets for anti-HIV. However, a mutation in viral strains rapidly developed the resistance of the com-pounds to the protein, reducing the effectiveness of the inhibitors. This work seeks to utilize machine learning-based quantitative structure-activity relationship (QSAR) analysis in combination with molecular docking simulations to forecast the presence of active compounds derived from medicinal plants. Specifically, the objective is to identify com-pounds that have the potential to operate as inhibitors of HIV-1 reverse transcriptase (RT), encompassing both wild-type and …


Hazara University's Monocot Specimen Data In Openherbarium.Org On 20 December 2023, Mary Barkworth, Liaqat Ullah, Abdul Majid, Ghulam Mujtaba Shah, Jan Alam 2024 Utah State University

Hazara University's Monocot Specimen Data In Openherbarium.Org On 20 December 2023, Mary Barkworth, Liaqat Ullah, Abdul Majid, Ghulam Mujtaba Shah, Jan Alam

Browse all Datasets

Northern Pakistan is interpreted here as including three administrative regions: Khyber Pakhtunkhwa, Gilgit-Baltistan, and Azad Jammu and Kashmir. It is dominated by multiple mountain ranges whose valleys drain, directly or indirectly, into the Indus River. Hazara University, which is in Khyber Pakhtunkhwa, was started in 2002 and its herbarium (HUP) in 2005. Digitization of the herbarium's vascular plants began in 2021 with its records being shared in OpenHerbarium and GBIF. Its online presence is now growing more rapidly than any other Pakistani herbarium. This paper summarizes the taxonomic diversity and geographic origin of its monocot holdings in 2023. In 2023, …


Evidence That Aquaporin 11 (Aqp11) In The Spiny Dogfish (Squalus Acanthias) May Represent A Pseudogene, Christopher P. Cutler, Meghan Canicatti, Esosa Omoregie 2024 Georgia Southern University

Evidence That Aquaporin 11 (Aqp11) In The Spiny Dogfish (Squalus Acanthias) May Represent A Pseudogene, Christopher P. Cutler, Meghan Canicatti, Esosa Omoregie

Department of Biology Faculty Publications

Various attempts to amplify an AQP11 cDNA from tissues of the spiny dogfish (Squalus acanthias) were made. Two pairs of deoxy-inosine-containing degenerate primers were designed based on conserved amino acid sequences from an AQP11 alignment. These primers yielded some faint bands from gill cDNA that were sequenced. Blast searches with the sequences showed they were not AQP11. An elasmobranch AQP11 nucleotide sequence alignment was produced to identify conserved regions to make further degenerate primers. One primer pair produced a short 148 bp fragment showing particularly strong amplification in gill and intestine. It was sequenced and represented a piece of the …


Exploring Definitions Of Daily Enteric Methane Emission Phenotypes For Genetic Evaluations Using A Population Of Indoor-Fed Multi-Breed Growing Cattle With Feed Intake Data, Clodgah V. Ryan, Thierry Pabiou, Deirdre C. Purfield, Donagh P. Berry, Stephen Conroy, Craig P. Murphy, Ross Evans 2024 Irish Cattle Breeding Federation, Ballincollig, Co. Cork, Ireland; Department of Biological Sciences, Munster Technological University, Bishopstown, Ireland

Exploring Definitions Of Daily Enteric Methane Emission Phenotypes For Genetic Evaluations Using A Population Of Indoor-Fed Multi-Breed Growing Cattle With Feed Intake Data, Clodgah V. Ryan, Thierry Pabiou, Deirdre C. Purfield, Donagh P. Berry, Stephen Conroy, Craig P. Murphy, Ross Evans

Department of Biological Sciences Publications

Genetic selection has been identified as a promising approach for reducing enteric methane (CH4) emissions; a prerequisite for genetic evaluations; however, these are estimates of the necessary genetic parameters based on a population representative of where the genetic evaluations will be used. The objective of this study was, therefore, to derive genetic parameters for a series of definitions of CH4, carbon dioxide (CO2), and dry matter intake (DMI) as well as genetic correlations between CH4, CO2, and DMI in a bid to address the paucity of studies involving methane emissions …


Multi-Agent System For Portfolio Profit Optimization For Future Stock Trading, Usha Devi, Mohan R 2024 Department of Computer Science and Engineering, National Institute of Technology Tiruchirappalli, Tuvakudi, India.

Multi-Agent System For Portfolio Profit Optimization For Future Stock Trading, Usha Devi, Mohan R

Karbala International Journal of Modern Science

Stock trading highly contributes to the economic growth of the country. The stock trading objective is to earn profits with buy/sell/hold decisions on the set of stocks in the portfolio. The portfolio optimization problem is finding the decision sequence that leads to higher profit and lower risk. Portfolio optimization is challenging due to complex price history patterns and an uncertain environment. Incorrect decisions in stock trading lead to massive losses. The proposed Multi-Agent System for Portfolio Profit Optimization (MASPPO) aims to optimize trading profit and reduce risk with accurate predictions. The proposed model integrates the Fuzzy c-means with the Deep …


Overlapping Extractive Land Use Rights Increases Deforestation And Forest Degradation In Managed Natural Production Forests, Bingcai Liu, Anand Roopsind, Brent Sohngen 2024 Denison University

Overlapping Extractive Land Use Rights Increases Deforestation And Forest Degradation In Managed Natural Production Forests, Bingcai Liu, Anand Roopsind, Brent Sohngen

Biology Faculty Publications and Presentations

Guyana manages an estimated 5.3 million hectares of old-growth tropical forests, 29% of its total forest area, for timber extraction. Individuals and companies can apply for time-limited leases that allocate access, management, and extraction rights for timber through a concession system. In many tropical regions, including Guyana, a lack of integrated land use planning often leads to overlapping extractive and forest use rights for logging and mining. Overlapping land rights in turn create uncertainty and limit investments toward sustainable forest management, affecting deforestation and forest degradation rates. In this study, we use matched fixed-effect and difference-in-differences panel data models to …


Targeting Strategies To Optimize The Therapeutic Potential Of Gold Compounds Against Her2-Positive Breast Cancers, Afruja Ahad 2024 The Graduate Center, City University of New York

Targeting Strategies To Optimize The Therapeutic Potential Of Gold Compounds Against Her2-Positive Breast Cancers, Afruja Ahad

Dissertations, Theses, and Capstone Projects

The overexpression of HER2 accounts for 20-30% of breast cancer tumors and not only serves as a marker for poor predictive clinical outcomes but also as a target for treatment. Antibody-drug conjugates (ADCs) combine the selectivity of monoclonal antibodies (mAbs) with the efficacy of chemotherapeutic drugs to provide targeted treatment without toxicity to normal tissue. Most of the ADCs currently in the clinic for cancer chemotherapy are based on complex organic molecules. In contrast, the conjugation of metallodrugs to mAbs has been overlooked when there is enormous potential in this area with the resurgence of metal-based drugs as prospective cancer …


Methamphetamine-Induced Dna Double-Stranded Breaks: The Impact Of The Dopamine Transporter And Insights Into The Mechanisms Of Dna Damage In Mouse Neuro 2a Cells, Lizette Couto 2024 The Graduate Center, City University of New York

Methamphetamine-Induced Dna Double-Stranded Breaks: The Impact Of The Dopamine Transporter And Insights Into The Mechanisms Of Dna Damage In Mouse Neuro 2a Cells, Lizette Couto

Dissertations, Theses, and Capstone Projects

Methamphetamine (METH) abuse remains a global health concern, with emerging evidence highlighting its genotoxic potential. In the central nervous system METH enters dopaminergic cells primarily through the dopamine transporter (DAT), which controls the dynamics of dopamine (DA) neurotransmission by driving the reuptake of extracellular DA into the presynaptic neuronal cell. Additional effects of METH on the storage of DA in synaptic vesicles lead to the dysregulated cytosolic accumulation of DA. Previous studies have shown that after METH disrupts intracellular vesicular stores of DA, the excess DA in the cytosol is rapidly oxidized. This generates an abundance of reactive oxygen species …


College Of Natural Sciences 2023 Year-End Publication, College Of Natural Sciences 2024 South Dakota State University

College Of Natural Sciences 2023 Year-End Publication, College Of Natural Sciences

College of Natural Sciences Newsletters and Reports

Page 1 Dean's Message
Page 3 Department Highlights
Page 4 One Day for State
Page 5 Noble Prize Winner Speaks on Campus
Page 6-7 Faculty Excellence
Page 8-9 Student Excellence
Page 10 Outreach Program
Page 10 Events and Traditions
Page 11 Connections Abroad
Page 12 Student Spotlight
Page 13 Alumni Spotlight
Page 14 First Ever Drone Day
Page 15 Grand Opening of POET Bioproducts Center
Page 16 Work Anniversaries


Digital Commons powered by bepress