SUNY College of Environmental Science and Forestry
SUNY College of Environmental Science and Forestry: Digital Commons @ ESF (State University of New York)Not a member yet
1478 research outputs found
Sort by
Sam Rothenberg at spectrophotometer
No full textSam Rothenberg at working with a spectrophotometer
4910 x 5948https://digitalcommons.esf.edu/paperimages/1151/thumbnail.jp
Student using a beater
No full textAn unknown male student working with a beater. The beater is still in use circa 2017.
5865 x 4725https://digitalcommons.esf.edu/paperimages/1155/thumbnail.jp
Investigating Stainless Steel Particle Synthesis
Get PDFThis thesis focuses on the chemistry for stainless nanoparticle synthesis in order to develop corrosion resistant nanoparticles. Syntheses within the Maye lab have been successful, however at the large scale these processes have been hindered by low yields as a result of byproduct formation and oxidation loss. This study addresses these problems by introducing a new precursor to synthesize the Fe core of FeCr/Ni stainless core/shell particles. Traditionally iron pentacarbonyl (Fe(CO)5 is used, but this study uses iron acetylacetonate (Fe(acac)3) as a substitute. Although the degradation of Fe(CO)5 is more commonly used and is understood relatively well, Fe(acac)3 is safer and less costly. Properly synthesized particles show high crystallinity and have immense magnetic capabilities. A comparison between the two precursors is completed in this work. The ability for Fe0 particles to act as a core for stainless particles and the effects of shells on the cores is also analyzed. Analysis of the particles was done using thermogravimetric analysis (TGA), Laser Ablation Induced Coupled Plasma Mass Spectrometry (LA-ICPMS), Physical Property Measurement System (PPMS), and x-ray diffraction (XRD).
These analysis methods allow for the approximate composition of the particles to be
determined and the approximate extent of oxidation to be estimated. Results of the study
show that Fe(acac)3 iron particles are less metallic than Fe(CO)5, suggesting that
Fe(acac)3 is not an effective substitute for Fe(CO)5. This shows that further research
needs to be completed in order to find a potential substitute or create a new route for the
successful creation of stainless nanoparticles
The Landscape of Fishing : A Study of Iceland’s Fishing Industry
Get PDFThe Landscape of Fishing is a comprehensive look into the history and modern day fishing industry of Iceland. In this study, each active fi shing harbor has been documented, mapped and analyzed to understand how the deeply rooted cultural practice of fishing has infl uenced development across the country as well as its role in shaping the landscape of the country into what it is today. Fishing has been synonymous with the country of Iceland since its settlement. There has arguably been no greater driving force of development that has influenced the country in the same way that the fishing industry has. Over the course of the study it has revealed a truly unique and isolated country which developed around one of their core cultural practices
Developmental and Cross-Generational Distribution and Toxicity of Polystyrene Nanoparticles in Zebrafish (Danio rerio)
Get PDFPlastics are ubiquitous in aquatic environments, accounting for 50-80% of marine debris (Barnes et al., 2009). The hazard of macroplastics (particles with a diameter \u3e 5 mm) is well established, with records of countless different species ingesting or becoming entangled in plastic debris (Laist, 1997). Recently, the degradation of macroplastics debris in the ocean and the beach litter into microplastics and nanoplastics has become a significant concern and an increasingly important area of research (Andrady, 2011). Despite this increase in concern relatively little is known about the presence of micro and nanoplastics in freshwater systems or about their potential toxicity to the aquatic organisms dwelling within those systems. This knowledge gap needs to be filled in order to determine the best course of action in limiting any negative effects within aquatic ecosystems
Unmanned Aerial Systems for Estimating Canopy Structure and Assessing Vegetation Health in Willow Crops
Get PDFOff-the-shelf, low cost small Unmanned Aerial Systems (sUASs) have been increasingly applied for conservation and management of natural resources. Using sUASs to monitor vegetation health and estimate canopy structure in willow crops could provide an avenue for rapid, quality data collection, similar to applications in precision agriculture. Multispectral imagery was collected at two altitudes over three willow sites in Upstate New York in October 2017. Individual bands were calibrated to account for minor variations in weather conditions during acquisition, stitched into orthomosaics and then used to calculate Normalized Difference Vegetation Index (NDVI). Field measurements including canopy depth, Leaf Area Index (LAI), and location were collected in summer 2017. Significant positive, linear relationships between mean NDVI and field LAI measurements were obtained at East Ava and Solvay with r=0.610 (p\u3e.001) and r=0.432 (p=.004), respectively. An analysis determining differences in computed NDVI values using calibrated and uncalibrated imagery was also performed
CHARACTERIZATION AND UTILIZATION OF HOT-WATER EXTRACTED LIGNIN FOR FORMALDEHYDE-FREE RESIN APPLICATIONS
Get PDFPhenol formaldehyde (PF) is found across a wide variety of applications, from wood adhesives in plywood and particleboard, to friction materials in automotive break parts and as a coating material in several markets. However, it is a petrochemical product and formaldehyde has also been classified as a carcinogen by the Environmental Protection Agency (EPA). Lignin-furfural resins are proposed as sustainable and safe formaldehyde-free alternatives. Lignins recovered from hydrolysates of the hot water extraction (HWE) process of select angiosperms; sugar maple (SM), willow (W), mixture of northern hardwoods (NHW), miscanthus, (MS) and wheat straw (WS) were used as raw materials. In addition, crude lignin recovered after acid hydrolysis of sugar maple hot water extract (SMAH) and SMAH after electron-beam irradiation (EBI) at 50 kGy (SMAH_IRR50) and at 100 kGy (SMAH_IRR100), were also used. The biorefinery lignins were characterized for their chemical composition and inherent properties via wet chemistry and instrumental techniques (HSQC, SEC, TGA and DSC). Two technical lignins, kraft (KL) and a lignin from dilute acid treatment (PL) were also selected for control purposes. The effect of reaction pH, furfural content, curing conditions (180°C and 1.9 MPa) and curing agents (HMTA and furfural) on the mechanical properties of the lignin based resins is determined. Testing of mechanical properties was conducted on resin reinforced glass fiber filters. Glass fiber filters were chosen for their inert nature and any improvement in strength was assumed to be of the resin itself. Based on the results obtained from the tests performed on glass fiber filters, select resins were tested for their mechanical properties on friction paper, and softwood and hardwood kraft papers for their reinforcement ability. Commercially available novolac-type PF resin was used as a control for all mechanical testing. Resins prepared from MS and SMAH lignin show better mechanical properties compared to other biorefinery lignins and are also comparable with PF resin. The good mechanical strength of resins prepared from MS and SMAH is attributed to higher S/G ratio and free phenolic hydroxyl group content – features that determine reactivity of the lignin
Left Electrical cabinet and controls for motor generator for Pulp and Paper mill
No full textThe left electrical cabinet and controls for a motor generator and a stane grinder in the Pulp and Paper mill (The stane grinder was decommissioned and removed circa 2010)
5830 x 4528https://digitalcommons.esf.edu/paperimages/1021/thumbnail.jp
Walters Hall view from walkway on south end at second floor level
No full textA second-floor view of Walters Hall from a walkway on the south end
5867 x 4692https://digitalcommons.esf.edu/paperimages/1037/thumbnail.jp
Student in lab 105 Walters during student paper machine run
No full textTwo white, male students working in lab 105 of Walters Hall during a paper machine run
2081 x 2910https://digitalcommons.esf.edu/paperimages/1052/thumbnail.jp