Physical Sciences and Mathematics Commons^™

Developing New Germplasm By Wide Hybridization Within Triticeae Grasses, Jinfeng Yun, Jianhua Hou, Zhuo Yu, Zaozhe Li

IGC Proceedings (1993-2023)

No abstract provided.

Genetic Diversity Among Alfalfa (Medicago Sativa L.) Cultivars Using Issr Markers, J. R. Yu, D. Q. Liu, L. M. Chen, K. Z. Li, Yongxiong Yu

IGC Proceedings (1993-2023)

No abstract provided.

A Multiproxy Database Of Western North American Holocene Paleoclimate Records, Cody Routson, Darrell S. Kaufman, Nicholas P. Mckay, Michael P. Erb, Stephanie H. Arcusa, Kendrick J. Brown, Matthew E. Kirby, Jeremiah P. Marsicek, R Scott Anderson, Gonzalo Jimenez-Moreno, Jessica R. Rodysill, Matthew S. Lachniet, Sherilyn C. Fritz, Joseph R. Bennett, Michelle F. Goman, Sarah E. Metcalfe, Jennifer M. Galloway, Gerrit Schoups, David B. Wahl, Jesse L. Morris, Francisca Staines-Urias, Andria Dawson, Bryan N. Shuman, Daniel G. Gavin, Jeffrey S. Munroe, Brian F. Cumming

Department of Earth and Atmospheric Sciences: Faculty Publications

Holocene climate reconstructions are useful for understanding the diverse features and spatial heterogeneity of past and future climate change. Here we present a database of western North American Holocene paleoclimate records. The database gathers paleoclimate time series from 184 terrestrial and marine sites, including 381 individual proxy records. The records span at least 4000 of the last 12 000 years (median duration of 10 725 years) and have been screened for resolution, chronologic control, and climate sensitivity. Records were included that reflect temperature, hydroclimate, or circulation features. The database is shared in the machine readable Linked Paleo Data (LiPD) format …

An Impact Model For Experiential Activities Of Farming And Food Education In Agricultural Sustainable Tourism, Feng-En Lo, Li-Shiue Gau, Yu-Yin Hsu, Rick Gage, Chien-Yun Hung

Natural Resources and Earth Sciences Faculty Research

This paper examines the development, implementation, and implications of farming and food experiential activities and the effects of these activities on agricultural sustainable tourism. A model is proposed that examines the major correlates and possible impacts related to these variables. A heuristic inquiry research design was adopted, employing a major multiple case study approach. In addition to secondary data, primary data were collected through 18 interviews with farmers, customers, government employees, community leaders and scholars, as well as 132 quantitative surveys from tourists and visitors involved in the activities on site.

The major cases of the Small Bee Project, Pitaya …

Gained In Translation: The Sudden Pivot Taking Physics Labs To The Cloud As A Reform Opportunity, William B. Laing Iii

Faculty Works

I will report on a positive experience with using the forced transition to online learning as an opportunity to adopt one of many best-practice examples from the world of Physics Education Research. Following the example in "Developing scientific decision making by structuring and supporting student agency" by N.G. Holmes, et al [1], (and the instructional materials shared on Physport.org), my efforts were directed toward cueing students to make decisions to design their research question during our online meetings, rather than developing materials to micro-manage their behaviors. Characteristics of the new online medium influenced instructional design and accessibility in surprising ways. …

Development Of A Highly Selective Plasmodium Falciparum Proteasome Inhibitor With Anti-Malaria Activity In Humanized Mice., Wenhu Zhan, Hao Zhang, John Ginn, Annie Leung, Yi J. Liu, Mayako Michino, Akinori Toita, Rei Okamoto, Tzu-Tshin Wong, Toshihiro Imaeda, Ryoma Hara, Takafumi Yukawa, Sevil Chelebieva, Patrick K. Tumwebaze, Maria Jose Lafuente-Monasterio, Maria Santos Martinez-Martinez, Jeremie Vendome, Thijs Beuming, Kenjiro Sato, Kazuyoshi Aso, Philip J. Rosenthal, Roland A. Cooper, Peter T Meinke, Carl F. Nathan, Laura A. Kirkman, Gang Lin

Natural Sciences and Mathematics | Faculty Scholarship

Plasmodium falciparum proteasome (Pf20S) inhibitors are active against Plasmodium at multiple stages-erythrocytic, gametocyte, liver, and gamete activation stages-indicating that selective Pf20S inhibitors possess the potential to be therapeutic, prophylactic, and transmission-blocking antimalarials. Starting from a reported compound, we developed a noncovalent, macrocyclic peptide inhibitor of the malarial proteasome with high species selectivity and improved pharmacokinetic properties. The compound demonstrates specific, time-dependent inhibition of the β5 subunit of the Pf20S, kills artemisinin-sensitive and artemisinin-resistant P. falciparum isolates in vitro and reduces parasitemia in humanized, P. falciparum-infected mice.

A Single-Scale Fractal Feature For Classification Of Color Images: A Virus Case Study, Walker Arce, James E. Pierce, Mihaela T. Velcsov

Mathematics Faculty Publications

Current methods of fractal analysis rely on capturing approximations of an images’ fractal dimension by distributing iteratively smaller boxes over the image, counting the set of box and fractal, and using linear regression estimators to estimate the slope of the set count line. To minimize the estimation error in those methods, our aim in this study was to derive a generalized fractal feature that operates without iterative box sizes or any linear regression estimators. To do this, we adapted the Minkowski-Bouligand box counting dimension to a generalized form by fixing the box size to the smallest fundamental unit (the individual …

Discrimination Of Earthquakes And Quarries In Kula District (Manisa, Turkey) And Its Vicinity By Using Linear Discriminate Function Method And Artificial Neural Networks, Aylin Tan, Gündüz Horasan, Doğan Kalafat, Ali Gülbağ

Bulletin of the Mineral Research and Exploration

In this study, seismic events in Kula district (Manisa, Turkey) and its vicinity have been investigated and then natural and artificial seismic activities are discriminated. Total of 77 digital vertical component velocity seismograms of seismic activities with ML≤3.5 magnitude from seismic activity catalogs between 2009 to 2014 recorded by Manisa Kula (KULA) broadband station operated by Bogazici University, Kandilli Observatory and Earthquake Resarch Institute Regional Earthquake- Tsunami Monitoring Center (RETMC) were used in this study. The maximum S-wave and maximum P-wave amplitude ratio (Ratio) of vertical component velocity seismograms and power ratio for (1 and 12 sec.) (Complexity-C) and total …

Ion Beam-Treated Space Polymers: Long-Term Stability In Geo-Simulated Environments, Jacob Kleiman, Zelina Iskanderova, Leonid Krishtein, J. R. Dennison, Brian Wood, Anatoly Grigorievsky, Carl Best

Journal Articles

As part of a large program conducted between years 2010 and 2018, a number of ion beam surface treatments and proprietary coatings formed on advanced space polymers by direct ion beam deposition were developed at Integrity Testing Laboratory (ITL) Inc, in Canada. Thistechnology allowed producing surfaces with controlled surface resistivity in a wide range of charge dissipation values, with negligibly low additional RF losses and other important functional properties, that allowed using such treated materials and products in modern space antennae, solar arrays and other external applications on spacecrafts in GEO environment. This paper will present an overview of results …

Exploring Complementary Strengths Of Invariant And Equivariant Representations For Few-Shot Learning, Mamshad Nayeem Rizve, Salman Khan, Fahad Shahbaz Khan, Mubarak Shah

Computer Vision Faculty Publications

In many real-world problems, collecting a large number of labeled samples is infeasible. Few-shot learning (FSL) is the dominant approach to address this issue, where the objective is to quickly adapt to novel categories in presence of a limited number of samples. FSL tasks have been predominantly solved by leveraging the ideas from gradient-based meta-learning and metric learning approaches. However, recent works have demonstrated the significance of powerful feature representations with a simple embedding network that can outperform existing sophisticated FSL algorithms. In this work, we build on this insight and propose a novel training mechanism that simultaneously enforces equivariance …

Synthesis And Characterization Of Diblock, Ph Responsive Drug Delivery Mpeg Poly(Β Amino Ester) Polymeric Micelles, Maxwell A. Wallace, Julissa Rodriguez, Maria Blahove

College of Science and Mathematics Undergraduate Research Symposium (2021)

Biocompatible micellar nanoparticles provide a platform to increase drug solubility, increasing cellular uptake, and leading to increased control of virus infection We are interested in the utility of pH responsive nanoparticles possessing the ability to deliver drug cargo intracellularly, in a pH dependent manner, coupled with known and novel antiviral compounds The presented research describes the assembly and characterization of mPEG PAE methoxy polyethylene glycol PEG Poly(β amino ester) micelles These micelles have been designed and synthesized to possess the ability to disassemble at pH 6 0 the pH of the trans Golgi this will result in the release of …

A Multiproxy Database Of Western North American Holocene Paleoclimate Records, Cody C. Routson, Darrell S. Kaufman, Nicholas P. Mckay, Michael P. Erb, Stéphanie H. Arcusa, Kendrick J. Brown, Matthew E. Kirby, Jeremiah P. Marsicek, R. Scott Anderson, Gonzalo Jiménez-Moreno, Jessica R. Rodysill, Matthew S. Lachniet, Sherilyn C. Fritz, Joseph R. Bennett, Michelle F. Goman, Sarah E. Metcalfe, Jennifer M. Galloway, Gerrit Schoups, David B. Wahl, Jesse L. Morris, Francisca Staines-Urías, Andria Dawson, Bryan N. Shuman, Daniel G. Gavin, Jeffrey S. Munroe, Brian F. Cumming

Geoscience Faculty Research

Holocene climate reconstructions are useful for understanding the diverse features and spatial heterogeneity of past and future climate change. Here we present a database of western North American Holocene paleoclimate records. The database gathers paleoclimate time series from 184 terrestrial and marine sites, including 381 individual proxy records. The records span at least 4000 of the last 12 000 years (median duration of 10 725 years) and have been screened for resolution, chronologic control, and climate sensitivity. Records were included that reflect temperature, hydroclimate, or circulation features. The database is shared in the machine readable Linked Paleo Data (LiPD) format …

Artificial De Novo Tetramer Hydrogenase Mimic, Co-Metallopeptide Titration, And Photocatalysis, Thuy Hien Le

Honors Theses

Alternative energy is more imperative than ever as we continue to exhaust nonrenewable resources. There is promise in artificial hydrogenases that produce hydrogen gas which can be an alternate source of clean, sustainable renewable energy. Moreover, artificial metalloenzymes were designed for solar H2 production using de novo designed metallopeptides. A computer-guided design approach was used to conceive the peptides. These peptides are 30 amino acids long and are designed to self-assemble into tetrameric structures. There are suitably positioned cysteine residues that bind the metal Co and form metallic clusters within these artificial proteins. The Co-metallopeptides were then characterized by employing …

New Characterizations Of Reproducing Kernel Hilbert Spaces And Applications To Metric Geometry, Daniel Alpay, Palle E. T. Jorgensen

Mathematics, Physics, and Computer Science Faculty Articles and Research

We give two new global and algorithmic constructions of the reproducing kernel Hilbert space associated to a positive definite kernel. We further present a general positive definite kernel setting using bilinear forms, and we provide new examples. Our results cover the case of measurable positive definite kernels, and we give applications to both stochastic analysis and metric geometry and provide a number of examples.

Aboveground Biomass Production Of Switchgrass And Sainfoin On Loess Plateau Of China, B. C. Xu, F. M. Li, L. Shan

IGC Proceedings (1993-2023)

No abstract provided.

Study On The Adaptability Of Brachiaria Spp. In Subtropical Region Of Fujian, X. H. Luo, Y. S. Lin, Z. Y. Ying

IGC Proceedings (1993-2023)

No abstract provided.

Physiological Responses To Salt Stress At Seedling Stage In Festuca, Xinming Wu, Y. Q. Wang, J. N. Liu, P. Guo, Y. Zhang, H. W. Chi

IGC Proceedings (1993-2023)

No abstract provided.

Studies On The Salt Tolerance Compensatory Growth Characteristics Of Elytrigia Elongata, Liujun Wen, Jin Yi, Shunji Piao, Hao Zhang, Jia Xu

IGC Proceedings (1993-2023)

No abstract provided.

Analysis Of Genetic Diversity In Alfalfa With Molecular Markers, Zhenwu Wei, Xiaoli Geng, Zhanhua Yang, Linyou Lu, Yan Zhao

IGC Proceedings (1993-2023)

No abstract provided.

Co-Evolutionary Analysis Suggests A Role For Tlr9 In Papillomavirus Restriction, Kelly King, Brendan B. Larsen, Sophie Gryseeis, Cécile Richet, Simona Kraberger, Robert Jackson, Michael Worobey, Joseph S. Harrison, Arvind Varsani, Koenraad Van Doorslaer

College of the Pacific Faculty Articles

Upon infection, DNA viruses can be sensed by pattern recognition receptors (PRRs) leading to the activation of type I and III interferons, aimed at blocking infection. Therefore, viruses must inhibit these signaling pathways, avoid being detected, or both. Papillomavirus virions are trafficked from early endosomes to the Golgi apparatus and wait for the onset of mitosis to complete nuclear entry. This unique subcellular trafficking strategy avoids detection by cytoplasmic PRRs, a property that may contribute to establishment of infection. However, as the capsid uncoats within acidic endosomal compartments, the viral DNA may be exposed to detection by toll-like receptor (TLR) …

Organic Geochemical Characteristics, Depositional Environment And Hydrocarbon Potential Of Bituminous Marls In Bozcahüyük (Seyitömer/Kütahya) Basin, Fatih Büyük, Ali Sari

Bulletin of the Mineral Research and Exploration

In this study, the geochemical properties, sedimentation conditions and hydrocarbon potential of the bituminous marls, having quite rich organic carbon content (average 9.27% TOC), composed of gray-green colored, dominant marl lithology with marl-claystone intercalation in the Bozcahüyük (Seyitömer/Kütahya) Basin has been evaluated. In this context, Rock-Eval pyrolysis, Gas Chromatography (GC), Gas Chromatography-Mass Spectrometry (GC-MS) and Modified Fischer Assay (MFA) analyses of the samples taken from the study area were performed and their organic facies have been evaluated. The marls have an excellent source rock characteristics, and include kerogen predominantly as Type I and rarely as Type II. The precipitation of …

Morphological Variation Of Sickle Alfalfa (Medicago Falcata L.) In China, J. Wang, S. Lu, Y. Wang, H. Wang, H. Liu

IGC Proceedings (1993-2023)

No abstract provided.

A Comparative Test Of Melilotoides Ruthenica Experimental Varieties, Zhaolan Wang, Jiancai Du, Lili Zhao, Huifang Hu, Wanguang Shi, Feixue Zhu, Yanyan Zhang, Xiaotao Mao

IGC Proceedings (1993-2023)

No abstract provided.

Domestication Of Leymus Paboanus (Claus) Pilger, Dusu Wen, Hailian Sun, Chunli Bai, A. Lata

IGC Proceedings (1993-2023)

No abstract provided.

Study On Genetic Diversity Of Wild Lespedeza Germplasm Resources, W. H. Yan, Zhu Xu, T. Y. Xilin

IGC Proceedings (1993-2023)

No abstract provided.

Investigation Of The Paleodepositional Environment Of The Middle Miocene Aged Organic Matter Rich Rocks (Tavas/Denizli/Sw Turkey) By Using Biomarker Parameters And Stable Isotope Compositions (¹³C And ¹⁵N), Demet Banu Koralay

Bulletin of the Mineral Research and Exploration

The study area is located 45 km south of Denizli. The purpose of this study is to identify the organic geochemical properties and paleo depositional environment of organic matter rich rocks from Tavas (Denizli/SW Turkey). For this purpose, total organic carbon (TOC, wt.%) and pyrolysis, n-alkane, isoprenoid, sterane, terpane and aromatic hydrocarbon parameters have been investigated of the studied samples. In addition, scanning electron microscopy (SEM) and stable isotope (δ¹³C and δ¹⁵N) investigations were also carried out. Organic matter rich rocks which have type III kerogen have got 25.80 and 44.00 wt.% TOC content. Hydrogen index (HI, 73 and 120 …

Factoring: Difference Of Squares, Thomas Lauria

Open Educational Resources

This lesson plan will explain how to factor basic difference of squares problems

Distribution And Conservation Status Of Camellia Longzhouensis (Theaceae), A Critically Endangered Plant Species Endemic To Southern China, Zhanhui Xu, Hai Ren, Xiao Wei, Kangting Ouyang, Dongxing Li, Yili Guo, Shujun Wen, Jifeng Long, Jun Wang, Dafeng Hui

Biology Faculty Research

Camellia longzhouensis (Theaceae) is an endemic evergreen shrub or small tree with a distribution restricted to South China. It is listed as Grade-II in the National Key Protected Wild Plants List. In this study, we surveyed its distribution, examined its population structure, identified factors affecting its survival, and reassessed its extinction risk. We found that C. longzhouensis was only distributed in the Nonggang National Nature Reserve and the surrounding area. Its individuals only grew under the secondary forest canopy in the karst mountain. A total of 58 individuals of C. longzhouensis in three sub-populations were found. Soil fertility and understory …

Investigation On Genetic Diversity In Subgenus Eospalax Of Myospalax Genus Using Cytochrome B Gene Sequences Of Gansu Province, Hongshan Yang, Xiaoqin He, Genzhu Chang

IGC Proceedings (1993-2023)

No abstract provided.

Study On Hybrid Selective Breeding Of High Quality Variety — Medicago Sativa L. Cv. Xinduo, Zhizhong Yang, Aikebar, Jie Li, Ming Din

IGC Proceedings (1993-2023)

No abstract provided.