Digital Commons Network^™

Radiological And Chemical Safety Assessment Of Drinking Water From Treatment Plants And Rivers In Kut City, Iraq, Ahmed A. Alswaty, Hadi D. Alattabi

Karbala International Journal of Modern Science

Climate change and increasing anthropogenic activities, particularly wastewater discharge into rivers, have raised pollution levels in the water sources of Kut City, necessitating an assessment of the radiological and chemical safety of drinking water at the city's treatment plants. Thirteen water samples were collected, comprising ten treated and three raw water samples from the source rivers. An HPGe detector was used to measure the radionuclides ²¹⁴Bi, ²¹⁴Pb, ²¹²Bi, ²¹²Pb, ⁴⁰K, and ¹³⁷Cs. All measured radionuclides were below the minimum detectable activity (MDA). ICP-OES analysis supported these findings, as U concentrations in most samples were …

A Geological And Geochemical Study Of The Philipsburg Mining District, Granite County, Montana, Celine M. Beaucamp

Graduate Theses & Non-Theses

The Philipsburg district, renowned for its rich mining history, has contributed significantly to Montana's mineral production, ranking as the state's second-most productive district. Active from 1865 to the 1980s, it yielded an impressive array of Ag (50-60 million oz), with notable outputs of Au, Zn, Pb, Cu, and battery-grade MnO2. The district features Cordilleran polymetallic veins, some of which are along bedding in Mississippian and Devonian limestone, and others are steeply dipping quartz veins in silicate-rich sedimentary rocks and in the Philipsburg batholith. The veins exhibit a district-wide mineral zonation, marked by Cu- and Ag-rich ores near granite porphyries, with …

An Estimation Study Of The Co2 Emissions In Saudi Arabia Using Machine Learning, Mohammed A. Albalawi, M.M. El-Halwany, Mahmoud H. Mahmoud, Mohamed Gar Alalm

Mansoura Engineering Journal

As part of the 2015 Paris Climate Agreement, the Kingdom of Saudi Arabia (KSA) pledged to implement policies aimed at reducing greenhouse gas emissions. The 2030 Vision, which KSA unveiled with the goal of building a more sustainable and diverse economy, led to a number of projects, such as the national renewable energy program, the Saudi green initiative, and the circular carbon economy. Additionally, KSA just revealed a bold plan to achieve net-zero status by 2060. The Kingdom pledged to cut its carbon emissions by 278 million tons of CO2eq (equivalent) yearly by 2030 in its revised nationally determined contribution …

Durability And Steel Corrosion Resistance Of Fly Ash Concrete Exposed To Groundwater, Mohamed Ahmed Bayomy, Khaled M. Osman, Hala Emad Elden Fouad

Mansoura Engineering Journal

This article proposes replacing Ordinary Portland Cement (OPC) with a fly ash (FA)-based geopolymer (GP) material, activated by a chemical activator, as the binding material. A 90-day study was conducted to evaluate the performance of fly ash geopolymer concrete (GPC) in a corrosive environment (groundwater). Scanning electron microscopy (SEM), compression testing, and energy-dispersive X-ray spectroscopy (EDX) were used to assess the toughness of the samples. Additionally, the linear polarization resistance (LPR) method was employed to measure the corrosion of steel embedded in the concrete structures. The comparison shows that increasing the fly ash (FA) content in geopolymer concrete (GPC) enhances …

Petrographic Analysis Of The Tel Mikhal (Tel Michal) Pottery (Pp. 57–65), Amir Gorzalczany

'Atiqot

Thirty-six vessels were submitted for petrographic analysis, most of them from the Persian period and several from Middle Bronze Age II. Several wasters from the kilns were analyzed as well. The results point to a large variety of pottery types in the Persian period, which were divided into three main groups: local products; short- to medium-range distance imports; and long-distance imports. These finds parallel those identified at other southern coastal sites, which show an overwhelming amount of imported pottery.

Provenance Of The Clay Artifacts From The Favissa At ‘En Hazeva (Pp. 185–189), Anat Cohen-Weinberger

'Atiqot

The cultic objects from the Favissa at ‘En Hazeva were examined petrographically to determine their origin. The analysis aimed at aiding in assessing whether the vessels were manufactured locally, in the ‘En Hazeva region, or were imported from Edom. The data retrieved was checked against other petrographic studies of ‘Edomite pottery’ in the region, from the Arava, the Negev and Jordan.

A Vascular Flora Of The Southern Inyo Mountains, Inyo County, California, Maria J. Jesus

Aliso: A Journal of Systematic and Floristic Botany

The Inyo Mountains in Inyo County, California, are an arid mountain range located between the eastern Sierra Nevada and Death Valley National Park. The study site is ca. 433 km² (167 sq mi), ranging in elevation from 549 to 2955 m (1800 to 9694 ft), and comprises the southern extent of the Inyo Mountains where the Great Basin Desert and Mojave Desert bioregions meet. This area had been poorly represented by botanical collections despite an abundance of distinctive biogeographic features and high diversity in rare and endemic plant species. The objectives of this study were to complete a specimen-based, …

Governance Options For High Seas Pockets Of The Western And Central Pacific : A Case Study Of High Seas Pocket 4 Or The North Fiji Basin, Lusiana Ranadi Dalituicama

World Maritime University Dissertations

No abstract provided.

Effect Of Tropical Cyclones On Coastal Marine Ecosystems, Xenia Neal

Theses, Dissertations and Culminating Projects

Tropical cyclone activity is predicted to intensify with anthropogenic climate change. Therefore, there has been a call to action in the scientific community to increase knowledge of the impacts of tropical cyclones on ecosystems. In particular, there is a wide knowledge gap in the understanding of how tropical cyclones influence coastal marine ecosystems. Using a standardized Web of Science database search, I identified 101 peer-reviewed articles documenting the impacts of tropical cyclones on coastal marine ecosystems in the North Atlantic Ocean, including coral reefs, mangrove forests, salt marshes, and seagrass meadows. Here, I summarize the results of these articles with …

Chapter 002 - Streams, Janice M. Glime

Bryophyte Ecology Volume 4: Habitat and Role

Explore the contents of Bryophyte Ecology, Volume 4, Chapter 2 - Streams by clicking the links above. For the Contents section of this ebook, as well as Volumes 1 through 5, please visit the Bryophyte Ecology Main Page.

Use CTRL+F to easily search within PDF files.

Ebook sponsored by Michigan Technological University and the International Association of Bryologists.

Expanding The Known Ranges Of The Phreatic Snails (Mollusca, Gastropoda, Cochliopidae) Of Texas, Usa, Dominique Alvear, Peter H. Diaz, J. Randy Gibson, Benjamin T. Hutchins, Benjamin Schwartz, Kathryn E. Perez

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Biology)

The Edwards-Trinity Aquifer System of Texas, USA, one of the world’s most ecologically diverse groundwater systems, contains 14 species (across seven genera) of small, poorly studied freshwater snails. Their underground habitat and microscopic size make them difficult to study and identify. Most published records are from original species descriptions, and some have not been seen since they were described more than 100 years ago. Here we use ~150 new collections, including spring and hyporheic zone sampling from across the Texas portions of the Edwards-Trinity Aquifer System, to update the ranges of these species. Two species were very uncommon, if encountered …

Volume 4, Chapter 2-1: Stream Physical Factors Affecting Bryophyte Distribution, Janice M. Glime

Bryophyte Ecology Subchapters

No abstract provided.

A Study Of Genetic Diversity Among Different Population Of Orthochirus Sp. Based On Cytochrome C Oxidase Subunit I And 16srrna Sequencing, Hedieh Jafari, Fatemeh Salabi, Alireza Forouzan

Turkish Journal of Zoology

Orthochirus sp. (Family: Buthidae) is widespread throughout the world. There are 17 species, 7 of which have been reported in Khuzestan Province of Iran, including the most diverse species related to the scorpion. In the present study, specimens of O. iranus, O. farzanpay, O. zagrosensis, and O. stockwelli were collected from different areas in this province. Phylogenetic analysis was conducted through duplicating and sequencing the cytochrome c oxidase subunit 1 (COXI) and 16SrRNA genes and comparing their genetic diversity. Orthochirus iranus had the highest genetic distance from O. stockwelli, while the lowest genetic distance was observed between O. farzanpay and …

Future Vision For Autonomous Ocean Observations, Christopher Whitt, Jay Pearlman, Brian Polagye, Frank Caimi, Frank Muller-Karger, Andrea Copping, Heather Spence, Shyam Madhusudhana, William Kirkwood, Ludovic Grosjean, Bilal Muhammad Fiaz, Satinder Singh, Sikandra Singh, Dana Manalang, Ananya Sen Gupta, Alain Maguer, Justin J. H. Buck, Andreas Marouchos, Malayath Aravindakshan Atmanand, Ramasamy Venkatesan, Vedachalam Narayanaswamy, Pierre Testor, Elizabeth Douglas, Sebastien De Halleux, Siri Jodha Khalsa

Marine Science Faculty Publications

Autonomous platforms already make observations over a wide range of temporal and spatial scales, measuring salinity, temperature, nitrate, pressure, oxygen, biomass, and many other parameters. However, the observations are not comprehensive. Future autonomous systems need to be more affordable, more modular, more capable and easier to operate. Creative new types of platforms and new compact, low power, calibrated and stable sensors are under development to expand autonomous observations. Communications and recharging need bandwidth and power which can be supplied by standardized docking stations. In situ power generation will also extend endurance for many types of autonomous platforms, particularly autonomous surface …

The Response Of Utah Lake's Plant And Algal Community Structure To Cultural Eutrophication, Leighton R. King

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Human activities have long had a negative impact on the water quality of freshwater lakes around the world. Utah Lake, located in north-central Utah, has been a subject of such impacts, as the lake experiences recurrent harmful algal blooms during the summer months. Lake warnings and closures have made the public increasingly aware of the ecological and economic impact of these blooms. The objectives of this study were to: 1) compare historical and present-day water quality and ecosystem conditions using environmental data contained in sediment cores, 2) identify whether, and when, Utah Lake transitioned from clearwater to turbid conditions, and …

Review Of Naturally Occurring Ammonia In Groundwater And Its Effect On Using Chloramines For Drinking Water Disinfection In Louisiana, Athena Lindsay

Honors Capstones

No abstract provided.

Allopatric Speciation In Asia Contributed To The Diversity Anomaly Between Eastern Asia And Eastern North America: Evidence From Anchored Phylogenomics Of Stewartia (Theaceae), Jianhua Li, Peter Del Tredici, Alan R. Lemmon, Emily Moriarty Lemmon, Yunpeng Zhao, Chengxin Fu

Faculty Publications

Premise of research. The disjunct distribution of plant genera between eastern Asia (EA) and eastern North America (ENA) has long attracted the attention of biologists and biogeographers. For most genera that have been studied, there are more species in EA than in ENA, and the diversity anomaly may have resulted from the greater physiographical heterogeneity in EA than in ENA in conjunction with climate and sea level changes. However, few empirical studies have explicitly tested the association between species diversity and allopatric speciation events. The genus Stewartia (Theaceae) displays this diversity anomaly, with two species in ENA and 21 …

Making 3d Laser Cut Stratigraphic Audio-Responsive Tactile Templates, Michael A. Kolitsky

Journal of Science Education for Students with Disabilities

The geologic method of stratigraphy which studies the structure of the earth by making layers was employed with 3D laser cutting techniques to make more easily defined tactile regions in templates of cells, tissues and anatomic regions containing muscles and bones. Templates were made audio responsive by hand-drilling a small hole in a template and filling that hole with conductive electric paint. A finger touch to the template top side now carries a charge similar to an electric circuit to the template bottom side resting on the surface of an iPad or iPad Pro where an audio button produces audio …

Investigations Of The Potential For Irrigated Agriculture On The Bonaparte Plains: Land Capability Assessment Report, Henry Smolinski

Resource management technical reports

This report describes 55 000 hectares of predominantly red sands and sandy loams — locally referred to as Cockatoo Sands — on the Bonaparte Plains about 70 kilometres north of the Ord River Irrigation Area, Kununurra. It builds on soil surveys conducted in 2009 and 2015, which identified significant areas of red soils in the Kununurra area that could be suitable for agriculture.

The Cockatoo Sands generally have loamy, sand topsoils that grade to sandy loam with depth. The soil profiles are very deep, well drained to rapidly drained, and highly permeable. These soil characteristics support a large range of …

1953 - Santa Cruz-Monterey Counties Investigation - Bulletin No. 5

Miscellaneous Documents and Reports

The area in Santa Cruz and Monterey Counties under this investigation has recently experienced a substantial increase in water utilization, in common with many other parts of California. As a result, it is confronted with a need for more complete conservation of its water resources. Diversion of surface water in Santa Cruz County has increased until in dry years insufficient summer How exists in certain streams to meet peak water demands for urban and recreational requirements. Expanding irrigated acreage in Pajaro Valley together with trends toward more intensive agriculture have increased the ground water draft in that valley and have …

2001 - Hydrogeologic Investigation Of Salinas Valley Basin In The Vicinity Of Fort Ord And Marina Salinas Valley, California - Final Report

Monterey County Water Resources Agency Engineering Reports

This report evaluated the then current state or potential for seawater intrusion in the city of Marina and the former Fort Order area. Groundwater from this area primarily supplied drinking water wells as opposed to agricultural wells. Aquifers evaluated in this study area include the perched zone or A-aquifer, the Pressure 180-Foot Aquifer (180-Foot Aquifer), the Pressure 400-Foot Aquifer ( 400-Foot Aquifer), the Deep Aquifer, and aquifers within the Purisima and Santa Margarita Formations. The I80-Foot and 400-Foot Aquifers are the focus of this study because both aquifers outcrop along the canyon walls of Monterey Bay where they interface with …

A 3,000‐Year Lag Between The Geological And Ecological Shutdown Of Florida's Coral Reefs, Lauren T. Toth, Isla B. Kuffner, Anastasios Stathakopoulos, Eugene Shinn

Marine Science Faculty Publications

The global‐scale degradation of coral reefs has reached a critical threshold wherein further declines threaten both ecological functionality and the persistence of reef structure. Geological records can provide valuable insights into the long‐term controls on reef development that may be key to solving the modern coral‐reef crisis. Our analyses of new and existing coral‐reef cores from throughout the Florida Keys reef tract (FKRT) revealed significant spatial and temporal variability in reef development during the Holocene. Whereas maximum Holocene reef thickness in the Dry Tortugas was comparable to elsewhere in the western Atlantic, most of Florida's reefs had relatively thin accumulations …

Antimicrobial Activities Of Culturable Microorganisms (Actinomycetes And Fungi) Isolated From Chaabe Cave, Algeria, Larbi Belyagoubi, Nabila Belyagoubi-Benhammou, Valme Jurado, Joëlle Dupont, Sandrine Lacoste, Fatima Djebbah, Fatima Z. Ounadjela, Souad Benaissa, Salim Habi, Djamel E. Abdelouahid, Cesareo Saiz-Jimenez

International Journal of Speleology

The discovery of new antibiotics and other bioactive microbial metabolites is a priority given the frequency of the emerging multi-drug resistant pathogenic microorganisms. Thus, scientists are searching for new antibiotics in microorganisms isolated from extreme habitats such as caves. In the present study, we aimed to perform the first analysis on culturable microorganisms in the Chaabe Cave (Algeria), and to test the antimicrobial activities of the isolates (Streptomyces spp. and Penicillium spp.). The potential for antimicrobial activity of 47 strains of actinomycetes and 23 strains of fungi were tested on Candida albicans, Staphylococcus aureus, Micrococcus luteus, Listeria monocytogenes, …

1974 - Geology Of The Southern Salinas Valley Area, California

State and Federal Documents Relating to Monterey and San Luis Obispo Counties

This 1974 report about the geology of the southern Salinas Valley was concerned mainly with relating the occurrence of petroleum and other mineral commodities to the Cenozoic history of the area. The investigation had two phases. First phase involved detailed geologic mapping of quadrangles that cover most of Tertiary beds west of the Salinas River. Second phase included a reconnaissance geologic mapping to extend the results of the first phase to a larger area. The report summarizes results of the geologic investigation of the entire southern Salinas Valley area.

Sediment And Plant Dynamics In A Degrading Coastal Louisiana Landscape, Glenn Michael. Suir

LSU Doctoral Dissertations

Alterations to Louisiana’s river systems and local hydrology have resulted in reduced freshwater, sediment, and nutrient inputs into wetland landscapes, causing significant negative impacts on marsh productivity and stability. To combat these losses many restoration projects have been constructed or planned throughout coastal Louisiana. Typical goals of wetland restoration efforts are to conserve, create, or enhance wetland form, and to achieve wetland function that approaches natural conditions. Failure to adequately maintain wetland elevation and hydrology can have serious implications on sedimentation and vegetation processes, which significantly reduces the likelihood of reaching structural and functional targets. Measures of wetland condition have …

1974 - Geology Of The Southern Salinas Valley Area, California

Miscellaneous Federal Documents & Reports

This 1974 report about the geology of the southern Salinas Valley was concerned mainly with relating the occurrence of petroleum and other mineral commodities to the Cenozoic history of the area. The investigation had two phases. First phase involved detailed geologic mapping of quadrangles that cover most of Tertiary beds west of the Salinas River. Second phase included a reconnaissance geologic mapping to extend the results of the first phase to a larger area. The report summarizes results of the geologic investigation of the entire southern Salinas Valley area.

The Blurred Line Between Photic And Aphotic Environments: A Large Mexican Cave With Almost No Dark Zone, Luis M. Mejía-Ortíz, Tanja Pipan, David C. Culver, Peter Sprouse

International Journal of Speleology

Sistema Muévelo Rico is a 1.2 km long cave in Quintana Roo, less than 2 km from the Caribbean Sea. We measured illuminance to a level of 0.1 lux, organic matter (weight loss on ignition), temperature, and relative humidity. The last two were measured at hourly intervals for nearly one year. Approximately one-third of the cave has illuminance values greater than 0.01 lux, and most of the rest of the cave has light as well. Temperature and relative humidity were relatively constant, but they showed a daily cycle at all stations, albeit with different strengths. Organic matter averaged 8%, intermediate …

Hydrology And Macroinvertebrates As Biological Indicators- An Integrated Study Of The Río Zamora Watershed, Loja, Ecuador, Isabel Ryde

Independent Study Project (ISP) Collection

Water quality and access is under grave threat in Ecuador, yet remains poorly studied. Macroinvertebrates were used as biological indicators to study water quality around Reserva Natural Madrigal del Podocarpus, Loja Province, Ecuador. Data on macroinvertebrates was combined with hydrologic measurements of stream functions. Macroinvertebrate sampling was conducted from 6 sites within the Upper Río Zamora watershed. Geologic outcrops were observed along several roadcuts and stream banks. Hydrologic data was collected by measuring discharge, elevation change, and finding the highest permanent spring. The EPT index (number of EPT individuals and percentage of EPT individuals) and the BMWP/Colombia Index for macroinvertebrates …

Systematics, Biogeography, And Species Delimitation Of The Malagasy Psorospermum (Hypericaceae), Heritiana S. Ranarivelo

Dissertations

Psorospermum belongs to the tribe Vismieae (Hypericaceae). Morphologically, Psorospermum is very similar to Harungana, which also belongs to Vismieae along with another genus, Vismia. Interestingly, Harungana occurs in both Madagascar and mainland Africa, as does Psorospermum; Vismia occurs in both Africa and the New World. However, the phylogeny of the tribe and the relationship between the three genera are uncertain. Using freshly collected specimens from my fieldwork as well as extant herbarium specimens, I aimed first, to generate a phylogeny of Psorospermum; second, to investigate its biogeography; and third, to investigate species boundaries within Malagasy Psorospermum …

Antibiotic Resistance Genes In Minnesota Soil Bacteria From Areas Of High And Low Ferric Iron, Gunner L. Drossel, Presley Martin Phd

Departmental Honors Projects

Naturally-occurring antibiotic resistance genes in soil bacteria represent a potentially important reservoir of genes that could contribute to antibiotic resistance of human pathogens. It has been reported that over 40 genes in bacterial genomes are controlled by concentrations of ferric iron. We examined the effect of soil metal content on the level of resistance to two antibiotics, ampicillin (Amp) and tetracycline (Tet), and the presence of multiple genes that code for efflux pump-mediated resistance. These pumps act to export toxins (e.g. heavy metals and antibiotics, perhaps). Because of this, growth in heavy metal-contaminated soils might select for antibiotic resistance. Ninety-six …