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2019

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Articles 2311 - 2340 of 15928

Full-Text Articles in Physical Sciences and Mathematics

Microwave Solventless Synthesis Of Meso-Tetrakis (Pentafluorophenyl)Poprphyrin (Tppf20) And Tris(Pentafluorophenyl))Corrole [Chemistry], Sunaina Singh Oct 2019

Microwave Solventless Synthesis Of Meso-Tetrakis (Pentafluorophenyl)Poprphyrin (Tppf20) And Tris(Pentafluorophenyl))Corrole [Chemistry], Sunaina Singh

Open Educational Resources

Organic chemistry is a two-semester course (Organic Chemistry I, SCC 251 and Organic Chemistry II, SCC 252) required for majors in Biology. The SCC 251 course has been designated for the Integrative Learning Core Competency as well the Digital Communication Ability. This course emphasizes the synthesis, structure, reactivity, and mechanisms of reaction of organic compounds. Laboratory stresses various organic synthetic and analytic techniques (distillation, extraction, chromatography and spectroscopy).

This lab provided an opportunity for students to go deeper with the chemistry content by correlating to the concepts they learned in General Chemistry courses such as Valence shell electron pair repulsion …


Titration Of A Newtown Creek Environmental Water Sample To Determine The Amount Of Chloride Ions [Chemistry], Kevin Mark Oct 2019

Titration Of A Newtown Creek Environmental Water Sample To Determine The Amount Of Chloride Ions [Chemistry], Kevin Mark

Open Educational Resources

Main Course Learning Objectives:

The General Chemistry 1 (SCC 201) course has multiple course learning objectives, which articulate key introductory chemistry concepts that all STEM students should possess. In particular, the Newtown Creek titration experiment aligns with SCC 201 learning objectives of:

  1. Demonstrate an appreciation of the role of chemistry in various aspects of life
  2. Perform basic laboratory skills such as the proper execution of titration techniques
  3. Describe and explain the fundamental chemistry concept of solution concentration
  4. Analyze and represent experimental data in tables and graphs, interpret experimental results and write laboratory reports

In the SCC 201 laboratory, students are …


Potential Restoration Methods Of Native Fish In The Clinch And Powell Rivers, Hartley Thacker Oct 2019

Potential Restoration Methods Of Native Fish In The Clinch And Powell Rivers, Hartley Thacker

Fall Showcase for Research and Creative Inquiry

This proposal uses citizen science to attempt to restore native fish populations in southwestern Virginia and the Tennessee River Valley.


A Review Of Protocols For Fiducial Reference Measurements Of Water-Leaving Radiance For Validation Of Satellite Remote-Sensing Data Over Water, Kevin G. Ruddick, Kenneth Voss, Emmanuel Boss, Alexandre Castagna, Robert Frouin, Alex Gilerson, Martin Hieronymi, B. Carol Johnson, Joel Kuusk, Zhongping Lee, Michael Ondrusek, Viktor Vabson, Riho Vendt Oct 2019

A Review Of Protocols For Fiducial Reference Measurements Of Water-Leaving Radiance For Validation Of Satellite Remote-Sensing Data Over Water, Kevin G. Ruddick, Kenneth Voss, Emmanuel Boss, Alexandre Castagna, Robert Frouin, Alex Gilerson, Martin Hieronymi, B. Carol Johnson, Joel Kuusk, Zhongping Lee, Michael Ondrusek, Viktor Vabson, Riho Vendt

Marine Sciences Faculty Scholarship

© 2019 by the authors. This paper reviews the state of the art of protocols for measurement of water-leaving radiance in the context of fiducial reference measurements (FRM) of water reflectance for satellite validation. Measurement of water reflectance requires the measurement of water-leaving radiance and downwelling irradiance just above water. For the former there are four generic families of method, based on: (1) underwater radiometry at fixed depths; or (2) underwater radiometry with vertical profiling; or (3) above-water radiometry with skyglint correction; or (4) on-water radiometry with skylight blocked. Each method is described generically in the FRM context with reference …


Green Infrastructure Solutions To Health Impacts Of Climate Change: Perspectives Of Affected Residents In Detroit, Michigan, Usa, Christine Carmichael, Cecilia Danks, Christine Vatovec Oct 2019

Green Infrastructure Solutions To Health Impacts Of Climate Change: Perspectives Of Affected Residents In Detroit, Michigan, Usa, Christine Carmichael, Cecilia Danks, Christine Vatovec

Rubenstein School of Environment and Natural Resources Faculty Publications

Cities worldwide are incorporating green infrastructure to mitigate climate change and achieve health cobenefits. However, green infrastructure projects are often distributed inequitably based on race and class. Residents' perspectives are necessary to develop and enact effective and equitable 'green' strategies to address climate change and its health impacts. This study reports findings from interviews and ethnographic observations with diverse residents of Detroit, Michigan, USA, who have experience with both green infrastructure projects and intense weather events (flooding). Residents expressed widespread support for green infrastructure solutions, while also sharing concerns about unintended health consequences from unsatisfactory governance of green spaces and …


Descriptive Astronomy I: The Solar System (Csu), Rosa Williams, Kimberly Shaw Oct 2019

Descriptive Astronomy I: The Solar System (Csu), Rosa Williams, Kimberly Shaw

Physics and Astronomy Grants Collections

This Grants Collection for Descriptive Astronomy I was created under a Round Thirteen ALG Textbook Transformation Grant.

Affordable Learning Georgia Grants Collections are intended to provide faculty with the frameworks to quickly implement or revise the same materials as a Textbook Transformation Grants team, along with the aims and lessons learned from project teams during the implementation process.

Each collection contains the following materials:

  • Linked Syllabus
  • Initial Proposal
  • Final Report


Circulation, Volume 25, No. 1, Center For Coastal Physical Oceanography, Old Dominion University, Tal Ezer Oct 2019

Circulation, Volume 25, No. 1, Center For Coastal Physical Oceanography, Old Dominion University, Tal Ezer

CCPO Circulation

Fall 2019 issue of CCPO Circulation featuring the article, "The International Reach of CCPO in Ocean Modeling and Education: Reflections from a Recent Trip to China," by Tal Ezer.


Fall 2019 Oct 2019

Fall 2019

Scientia

Education Taking Flight; The Vincentian Question and the Chemistry Teacher; Science Goes Global; Minister of Hope: Neurosurgeon and cancer researcher Alfredo Quinones-Hinojosa, MD, believes hope is more powerful than fear; What's New: The college introduced four new programs and tracks in its offerings for the 2019-20 academic year; Lab Notes; A Teacher Who Really Counts: Golden Apple Recipient Candice Cortese (CSH MA '10) Reflects on her Love of Teaching Math; One Smart Cookie: Chemistry Student Lucienna Wolf Says, "If You Really Apply Yourself, the Teachers Are More Than Happy to Help You."


Ethnobotany And Dai Medicine: Herbal Roots, Jasper Tsai Oct 2019

Ethnobotany And Dai Medicine: Herbal Roots, Jasper Tsai

Independent Study Project (ISP) Collection

Xishuangbanna is home to one of the most biologically and culturally diverse regions in China. Dai medicine from the Dai people has been recognized by China as one of the four major ethnic minority medicines. With over 2,500 years of practice, Dai medicine utilizes the herbs found in the diverse region mixed with principles and theories from Buddhism. There have been over 500 unique herbs used in Dai medicine, each with different properties and functions. As Xishuangbanna continues to develop as a city and expand its rubber and banana plantations, it has large impacts on the environment, living standard, education, …


Impact Of The Degree Of Urbanization On Bird Abundance And Diversity, Gabrielle Doyle, Sheila Garcia, Sophie Kidd, Tra'dayja Smith Oct 2019

Impact Of The Degree Of Urbanization On Bird Abundance And Diversity, Gabrielle Doyle, Sheila Garcia, Sophie Kidd, Tra'dayja Smith

Fall Showcase for Research and Creative Inquiry

Bird diversity and abundance in Farmville, Virginia. Sampling twice a day, four days a week.


Untapped Capacity For Resilience In Environmental Law, Ahjond Garmestani, J. B. Ruhl, Brian C. Chaffin, Robin K. Craig, Helena F.M.W. Van Rijswick, David G. Angeler, Carl Folke, Lance Gunderson, Dirac Twidwell, Craig R. Allen Oct 2019

Untapped Capacity For Resilience In Environmental Law, Ahjond Garmestani, J. B. Ruhl, Brian C. Chaffin, Robin K. Craig, Helena F.M.W. Van Rijswick, David G. Angeler, Carl Folke, Lance Gunderson, Dirac Twidwell, Craig R. Allen

School of Natural Resources: Faculty Publications

Over the past several decades, environmental governance has made substantial progress in addressing environmental change, but emerging environmental problems require new innovations in law, policy, and governance. While expansive legal reform is unlikely to occur soon, there is untapped potential in existing laws to address environmental change, both by leveraging adaptive and transformative capacities within the law itself to enhance socialecological resilience and by using those laws to allow socialecological systems to adapt and transform. Legal and policy research to date has largely overlooked this potential, even though it offers a more expedient approach to addressing environmental change than waiting …


Practice Problem Worksheets For Freshman Chemistry I (Openstax Chemistry 2nd Edition), Suzanne Ellenberger, Wenjian Du, Sara Blankenship, Ana West, Rupa Gokal, Joel Caughran Oct 2019

Practice Problem Worksheets For Freshman Chemistry I (Openstax Chemistry 2nd Edition), Suzanne Ellenberger, Wenjian Du, Sara Blankenship, Ana West, Rupa Gokal, Joel Caughran

Chemistry Ancillary Materials

This set of practice problem worksheets for Freshman Chemistry I was created under a Round Thirteen Mini-Grant for Ancillary Materials Creation and Revision. These materials are made to supplement OpenStax Chemistry (https://openstax.org/details/books/chemistry-2e).

Topics covered include:

  • Atoms, Molecules, and Ions;
  • Gases;
  • Compounds;
  • Solutions and Colloids;
  • Stoichiometry


Mathematical Modeling (Fvsu), Samuel Cartwright, Bhavana Burell Oct 2019

Mathematical Modeling (Fvsu), Samuel Cartwright, Bhavana Burell

Mathematics Grants Collections

This Grants Collection for Mathematical Modeling was created under a Round Thirteen ALG Textbook Transformation Grant.

Affordable Learning Georgia Grants Collections are intended to provide faculty with the frameworks to quickly implement or revise the same materials as a Textbook Transformation Grants team, along with the aims and lessons learned from project teams during the implementation process.

Each collection contains the following materials:

  • Linked Syllabus
  • Initial Proposal
  • Final Report


Survey Of Calculus (Ga Southern), Paul Hadavas Oct 2019

Survey Of Calculus (Ga Southern), Paul Hadavas

Mathematics Grants Collections

This Grants Collection for Survey of Calculus was created under a Round Twelve ALG Textbook Transformation Grant.

Affordable Learning Georgia Grants Collections are intended to provide faculty with the frameworks to quickly implement or revise the same materials as a Textbook Transformation Grants team, along with the aims and lessons learned from project teams during the implementation process.

Documents are in .pdf format, with a separate .docx (Word) version available for download. Each collection contains the following materials:

  • Linked Syllabus
  • Initial Proposal
  • Final Report


College Algebra (Atlm), Shreyas Desai, Anthonia Ekwuocha, Noel Whelchel Oct 2019

College Algebra (Atlm), Shreyas Desai, Anthonia Ekwuocha, Noel Whelchel

Mathematics Grants Collections

This Grants Collection for College Algebra was created under a Round Twelve ALG Textbook Transformation Grant.

Affordable Learning Georgia Grants Collections are intended to provide faculty with the frameworks to quickly implement or revise the same materials as a Textbook Transformation Grants team, along with the aims and lessons learned from project teams during the implementation process.

Each collection contains the following materials:

  • Linked Syllabus
  • Initial Proposal
  • Final Report


Age And Growth Of Hardhead Catfish And Gafftopsail Catfish In Coastal Louisiana, Usa, Shane Flinn, Stephen Midway Oct 2019

Age And Growth Of Hardhead Catfish And Gafftopsail Catfish In Coastal Louisiana, Usa, Shane Flinn, Stephen Midway

Faculty Publications

The Hardhead Catfish Ariopsis felis and Gafftopsail Catfish Bagre marinus are marine catfishes that have low recreational and commercial landings in U.S. waters, although they are among the most abundant species in coastal waters of the Gulf of Mexico. Few biological studies exist on marine catfishes, with most studies focusing on their unique reproductive biology. This study evaluated weight-length relationships for Gafftopsail Catfish (n = 264) and Hardhead Catfish (n = 823) sampled from across coastal Louisiana, USA, during 2016-2018; subsamples (93 and 266, respectively) were aged using lapilli for age and growth analyses. Hardhead Catfish showed a small but …


Nature Of The Crust In The Northern Gulf Of California And Salton Trough, Patricia Persaud Oct 2019

Nature Of The Crust In The Northern Gulf Of California And Salton Trough, Patricia Persaud

Faculty Publications

In the southern Gulf of California, the generation of new oceanic crust has resulted in linear magnetic anomalies and seafloor bathymetry that are characteristic of active seafloor-spreading systems. In the northern Gulf of California and the onshore (southeastern California, USA) Salton Trough region, a thick sedimentary package overlies the crystalline crust, masking its nature, and linear magnetic anomalies are absent. We use potential-field data and a geotherm analysis to constrain the composition of the crust (oceanic or continental) and develop a conceptual model for rifting. Gravity anomalies in the northern Gulf of California and Salton Trough are best fit with …


South Dakota State University : Research Fall 2019, South Dakota State University Oct 2019

South Dakota State University : Research Fall 2019, South Dakota State University

Research: South Dakota State University

[Page] 2 Curcumin formulation on its way to health product market
[Page] 4 Flexibility key to forging research partnership with Kodo Kids
[Page] 6 Researcher examines hope among children in Flint, Michigan
[Page] 7 Plant pathologist battles stem canker
[Page] 8 Removing ‘Typhoid Marys’ restores health of Custer bighorn sheep herd
[Page] 10 Breeder, food scientist help improve quality of oats, increase local production
[Page] 13 SDSU, community leaders explore new ways to drive research, partnerships
[Page] 14 SDSU, community leaders explore new ways to drive research, partnerships
[Page] 16 Engineering builds business connections through Research Park
[Page] 17 Research …


How To Reconcile Randomness With Physicists' Belief That Every Theory Is Approximate: Informal Knowledge Is Needed, Ricardo Alvarez, Nick Sims, Christian Servin, Martine Ceberio, Vladik Kreinovich Oct 2019

How To Reconcile Randomness With Physicists' Belief That Every Theory Is Approximate: Informal Knowledge Is Needed, Ricardo Alvarez, Nick Sims, Christian Servin, Martine Ceberio, Vladik Kreinovich

Departmental Technical Reports (CS)

In this paper, we show that physicists' intuition about randomness is not fully consistent with their belief that every theory is only approximate. We also prove that there is no formal way to reconcile these two intuitions, this reconciliation has to be informal. Thus, there are fundamental reasons why informal knowledge is needed for describing the real world.


Artificial Intelligence, Real Impact, Singapore Management University Oct 2019

Artificial Intelligence, Real Impact, Singapore Management University

Perspectives@SMU

AI use in China continues to push innovation envelopes, but technology must be utilised and updated with expert advice


Σ-Ary, Minnesota State University Moorhead, Mathematics Department Oct 2019

Σ-Ary, Minnesota State University Moorhead, Mathematics Department

Math Department Newsletters

No abstract provided.


Hypoxia In Mangroves: Occurrence And Impact On Valuable Tropical Fish Habitat, Alexia Dubuc, Ronald Baker, Cyril Marchand, Nathan Waltham, Marcus Sheaves Oct 2019

Hypoxia In Mangroves: Occurrence And Impact On Valuable Tropical Fish Habitat, Alexia Dubuc, Ronald Baker, Cyril Marchand, Nathan Waltham, Marcus Sheaves

School of Marine and Environmental Sciences Faculty and Staff Publications and Presentations

Intertidal mangrove forests are harsh environments that can naturally experience hypoxia in association with low tide. However, we know relatively little about dissolved oxygen (DO) fluctuations and DO-induced responses by fish, although DO is a fundamental water quality parameter. This study examines DO as a potential factor regulating the utilization of intertidal mangrove forests by fish and consequently their widely recognized feeding, refuge and nursery values. We deployed underwater video cameras, coupled with DO and depth loggers, in a mangrove forest to record changes in fish assemblages in response to tidal variations in DO and other associated environmental parameters. Our …


The Intensification Of Hurricane Maria 2017 In The Antilles, Mark Jury, Sen Chiao, Raphael Cécé Oct 2019

The Intensification Of Hurricane Maria 2017 In The Antilles, Mark Jury, Sen Chiao, Raphael Cécé

Faculty Publications, Meteorology and Climate Science

Environmental influences on Hurricane Maria in the Antilles Islands are analyzed at the large-scale (1–25 September) and at the meso-scale (17–20 September 2017). The storm intensified rapidly prior to landfall in Dominica, going from category 1 to 5 in 15 h. As the storm progressed toward Puerto Rico (PR), its NE flank entrained air from seas cooled by the earlier passage of two hurricanes, and strengthened on its SW flank. Operational model forecasts tended to delay intensification until west of the Antilles Islands, thus motivating two independent weather research and forecasting (WRF) simulations. These gave minimal track errors at 1- …


Traditional Knowledge Of Fire Use By The Confederated Tribes Of Warm Springs In The Eastside Cascades Of Oregon, Michelle M. Steen-Adams, Susan Charnley, Rebecca Mclain, Mark D. O. Adams, Kendra L. Wendel Oct 2019

Traditional Knowledge Of Fire Use By The Confederated Tribes Of Warm Springs In The Eastside Cascades Of Oregon, Michelle M. Steen-Adams, Susan Charnley, Rebecca Mclain, Mark D. O. Adams, Kendra L. Wendel

Institute for Sustainable Solutions Publications and Presentations

We examined traditional knowledge of fire use by the Ichishikin (Sahaptin), Kitsht Wasco (Wasco), and Numu (Northern Paiute) peoples (now Confederated Tribes of Warm Springs, CTWS) in the eastside Cascades of Oregon to generate insights for restoring conifer forest landscapes and enhancing culturally-valued resources. We examined qualitative and geospatial data derived from oral history interviews, participatory GIS focus groups, archival records, and historical forest surveys to characterize cultural fire regimes (CFRs) –an element of historical fire regimes– of moist mixed conifer (MMC), dry mixed conifer (DMC), and shrub-grassland (SG) zones. Our ethnohistorical evidence indicated a pronounced cultural fire regime in …


Impact Of Titanium Dioxide Nanoparticles On Nutrient And Contaminant Reduction In Wastewater Treatment Wetlands, Madeline Hubbard Oct 2019

Impact Of Titanium Dioxide Nanoparticles On Nutrient And Contaminant Reduction In Wastewater Treatment Wetlands, Madeline Hubbard

Civil and Environmental Engineering Master's Project Reports

Metallic nanoparticles are found in a variety of commercial products and industrial processes, and have become more common in the last few decades. As nanoparticles are toxic to biota and have the potential to spread other types of contamination, their increased use has become a concern. Research into the transport of nanoparticles in subsurface and surface waters shows a wide range in mobility, but that they are most likely to collect in systems with low linear velocities and high organic content. As a result, wetlands are the most vulnerable to nanoparticle contamination. Wetlands receiving and treating wastewater effluent have an …


Quasilinearization And Boundary Value Problems At Resonance, Kareem Alanazi, Meshal Alshammari, Paul W. Eloe Oct 2019

Quasilinearization And Boundary Value Problems At Resonance, Kareem Alanazi, Meshal Alshammari, Paul W. Eloe

Mathematics Faculty Publications

A quasilinearization algorithm is developed for boundary value problems at resonance. To do so, a standard monotonicity condition is assumed to obtain the uniqueness of solutions for the boundary value problem at resonance. Then the method of upper and lower solutions and the shift method are applied to obtain the existence of solutions. A quasilinearization algorithm is developed and sequences of approximate solutions are constructed, which converge monotonically and quadratically to the unique solution of the boundary value problem at resonance. Two examples are provided in which explicit upper and lower solutions are exhibited.


Nir Mapping Of The Mastodon Tusk Layers, Carli Jo Russenberger Oct 2019

Nir Mapping Of The Mastodon Tusk Layers, Carli Jo Russenberger

Fall 2019 - Chemical Analysis Class Projects

This tusk was unearthed in September of 1933 in the town of Hampton, Iowa. About two feet from the proximal end, the tip broke upon extrication. In order to preserve this archaeological finding, many layers of lacquers, plasters, and varnishes were applied. 3 The layers of preservation are not well identified, as well as the timing of application.

By using the Near Infrared (NIR) technique, infrared light is applied to the tusk and wavelengths are absorbed. The absorbances can help determine the functional groups of the restoration materials in the NIR range of 4,000 to 10,000 wavenumbers.

The objective of …


Mapping The Exterior Of A Mastodon Tusk Using Uv-Vis Diffuse Reflectance, Teresa Feldman Oct 2019

Mapping The Exterior Of A Mastodon Tusk Using Uv-Vis Diffuse Reflectance, Teresa Feldman

Fall 2019 - Chemical Analysis Class Projects

The 12-foot, 600-pound mastodon tusk was discovered in Hampton, Iowa, in the 1930s by a man digging in the gravel. It was the largest discovered mastodon tusk until the 1970s. The tusk was donated to UNI in 1933, under Dr. Cable, and put on display at the UNI Museum in the 1960s. Over the years, there have been many efforts to conserve the tusk, but it has still sustained breakage and water damage. It has also been subject to inadvertent degradation from some of the previous conservation efforts.

The purpose of the research conducted was to create a spectral map …


Identification Of Dye Compounds In Chinese Artifacts By Gc Ms, Pratima Raut Oct 2019

Identification Of Dye Compounds In Chinese Artifacts By Gc Ms, Pratima Raut

Fall 2019 - Chemical Analysis Class Projects

UNI Museum homes wide variety of textile artworks.
Many of them have historical significance. Two of them are UNIM 2005.2.24 (Tapestry) and UNIM1986.14.1985.1.124 (Hanging)

Figure 1: UNIM 2005.2.24 (Tapestry)
Rectangular Textile
Dimension: 36cm × 69cm
Dark blue silk embroidery of an old bearded man believed to be Chinese god, Shou Hsing
Contrasting floral designed 1'' border
“Made in China” stamp on the plain cotton fabric back

Figure 2: UNIM 1986.14.1985.1.124 (Hanging)
Silk fabric
Dimension 158cm × 74cm
Dimension: 36cm × 69cm
Depiction of an elderly man like the one in Chinese folklore about prosperity
Assumed to be of Chinese origin


Increasing Expression Of Civic-Engagement Values By Students In A Service-Learning Chemistry Course, Audrey E. Mcgowin, Rebecca Teed Oct 2019

Increasing Expression Of Civic-Engagement Values By Students In A Service-Learning Chemistry Course, Audrey E. Mcgowin, Rebecca Teed

Chemistry Faculty Publications

A service-learning course at a midsized Midwestern research university was modified over a period of six years to integrate best-practice pedagogies that have been shown to increase civic engagement by students. Best-practice pedagogies included regular interaction with community partner(s), significant time spent on the service activity, and regular reflection (written and verbal) on the implications of the service activity. Besides water quality monitoring, students performed private well water analysis, wrote multiple formal reflection papers, and presented a public talk on the results of their project that included significant discussion time with community partners. Authentic expression of civic engagement values was …