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Articles 61 - 90 of 3263

Full-Text Articles in Life Sciences

The Demographic Drivers Of California’S Environmental Voting, Lukas Yasuda Jul 2017

The Demographic Drivers Of California’S Environmental Voting, Lukas Yasuda

Journal of Environmental and Resource Economics at Colby

This study examines the demographics of California’s 53 congressional districts and the relationship with the voting patterns on three environmentally focused propositions in the 2008 and 2010 elections. Previous literature on the topic is mixed as some studies suggest that select attributes are found among environmental voting centers, yet other research describes the relationship as more complex than simple characteristics. Previous literature on the topic is mixed, with some studies suggesting that select attributes are found among environmental vote support hubs, whereas alternative research suggests the problem is more complex than simple characteristics. I collected data on income, education, age, …

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How Individuals React To Smog Alerts In Beijing --Evidence From Beijing Subway Volume, Hanjing Shi Jul 2017

How Individuals React To Smog Alerts In Beijing --Evidence From Beijing Subway Volume, Hanjing Shi

Journal of Environmental and Resource Economics at Colby

This paper is going to find out the impact of smog alerts on individuals’ outdoor activities in Beijing. I use the subway volume to represent the outdoor activities. There are four levels of smog alerts in Beijing – blue, yellow, orange, and, red. The blue one is the lowest, and the red one is the highest. People in Beijing in all do not react to smog alerts in all statistically significant both on working days and weekends. But when combine orange alerts and red alerts together, the results show that people react to severe alerts differently during non-weekend days and …

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The Effects From Public Transportation On Property Values: A Closer Look At Scituate, Hanover, And Norwell, Massachusetts, Alexandra Taylor Perticone, Christine S. Coveney Jul 2017

The Effects From Public Transportation On Property Values: A Closer Look At Scituate, Hanover, And Norwell, Massachusetts, Alexandra Taylor Perticone, Christine S. Coveney

Journal of Environmental and Resource Economics at Colby

Prior studies have expressed the value of location in real estate, but more recent studies have explored the influence that public transportation has had on housing prices. Access to public transportation is understood to increase the value of homes. Easier access to public transportation allows for shorter and more convenient commutes into or within cities. However, other studies have found that proximity to public transportation can also have adverse effects on property values. This paper investigates whether the implementation of the Greenbush Commuter line in Massachusetts in October 2007 increased the housing prices in Scituate, Ma--the furthest town from the …

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Invited Introduction To Jerec, Matthew Kahn Jul 2017

Invited Introduction To Jerec, Matthew Kahn

Journal of Environmental and Resource Economics at Colby

No abstract provided.

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Welcome By The Editor, Nathan W. Chan Jul 2017

Welcome By The Editor, Nathan W. Chan

Journal of Environmental and Resource Economics at Colby

No abstract provided.

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Temporal Changes In The Larval Placopecten Magellanicus Population In A Small-Scale Fishery Closure Area In Coastal Maine, Usa, Jessica P. Batchelder Jan 2017

Temporal Changes In The Larval Placopecten Magellanicus Population In A Small-Scale Fishery Closure Area In Coastal Maine, Usa, Jessica P. Batchelder

Honors Theses

The Midcoast Maine Collaborative Scallop Project was established in 2013 by fishers, scientists, and policy makers to determine if a small-scale closure area could restore the local Atlantic sea scallop (Placopecten magellanicus) population to an area in coastal Maine that previously supported high scallop densities. These stakeholders established a three by one mile closure area in the Lower Muscle Ridge Channel to assess the response of the adult and larval scallop populations. Understanding the larval dynamics in a closure area is key to evaluating the recovery potential of the population and for future population stock levels. This study …

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Examining Interactions Between Opsins And Carotenoid Biosynthetic Proteins In Halophilic Archaea, Alexandru M. Plesa Jan 2017

Examining Interactions Between Opsins And Carotenoid Biosynthetic Proteins In Halophilic Archaea, Alexandru M. Plesa

Honors Theses

Organisms have evolved numerous specialized molecules for constantly responding to environmental changes. Examples of such molecules are the light-driven proton-pump rhodopsins, such as bacteriorhodopsin (BR) and cruxrhodopsin (cR), and the carotenoid pigments, such as retinal and bacterioruberin. In halophilic Archaea, retinal can covalently bind bacterioopsin (BO) and cruxopsin (CO) to form the corresponding protein complexes, and its biosynthesis is indirectly controlled by the activity of the lycopene elongase (Lye) enzyme, which converts lycopene, a retinal precursor, to a form of bacterioruberin. Interestingly, opsins were shown to inhibit the activity of Lye, thereby promoting retinal biosynthesis and indirectly regulating the apoprotein-cofactor …

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Vein Patterning During Juvenile Wing Development In Oncopeltus Fasciatus And Jadera Haematoloma, William R. Simmons Jan 2017

Vein Patterning During Juvenile Wing Development In Oncopeltus Fasciatus And Jadera Haematoloma, William R. Simmons

Honors Theses

Wings are a defining characteristic of all pterygote insects and are agreed to originate from a single common winged ancestor. However, essentially nothing is known about the molecular mechanisms that regulate wing development and patterning outside of Endopterygota, and the vast majority of this knowledge comes solely from Drosophila melanogaster. There is reason to suspect that the drastic developmental differences that exist between Endopterygota and Exopterygota have resulted in changes in the mechanisms, timings, or even genes that govern wing development. This study examined the roles of several genes known to be involved in D. melanogaster wing development and patterning …

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Protein Kinase Activity Toward Taabf1 In Imbibing Grains, Taylor P. Enrico Jan 2017

Protein Kinase Activity Toward Taabf1 In Imbibing Grains, Taylor P. Enrico

Honors Theses

The hormones gibberellin and abscisic acid are essential for plant responses to changing environmental conditions, and can send opposing signals. In wheat, the transcription factor TaABF1 plays an important role at the intersection of a gibberellin-induced/abscisic acid-suppressed pathway. When gibberellin dominates, the GA-induced gene, Amy32b, is transcribed. When abscisic acid is dominant, TaABF1 is active and it downregulates GA-induction of Amy32b, while promoting ABA-induced transcription of the gene HVA1. The activity of TaABF1 is thought to be regulated by post-translational phosphorylation at key serine residues. In this study, to determine TaABF1 phosphorylation by wheat kinases, we purified recombinant …

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Crops And Controversy: Industry’S Role In The Gmo Debate, Carina Wallack Jan 2017

Crops And Controversy: Industry’S Role In The Gmo Debate, Carina Wallack

Honors Theses

The use of genetically modified crops (also called GM crops, genetically modified organisms, or GMOs for short) has become a highly contested issue. New genetic modification technologies offer a variety of advantages for improving agricultural efficiency. However, some scientists argue that the safety testing conducted thus far does not provide enough information and worry about possible health and ecological risks. Private industry sponsors a great deal of research on genetically modified crops. As the international controversy regarding the use of GMOs has unfolded, the very companies responsible for commercializing genetically modified crops have gained substantial influence in the resulting scientific …

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Sweating The Small Stuff: Linking Plankton To Climate Change, Brian Kim '18 Makes Conncetions, Stephen Collins Sep 2016

Sweating The Small Stuff: Linking Plankton To Climate Change, Brian Kim '18 Makes Conncetions, Stephen Collins

Colby Magazine

It takes an expansive mind to connect microscopic marine copepods (certain crustacean plankton) unwittingly chomping on floating microplastics with a bigger picture: the planet’s carbon pump and global climate change. But that’s what Brian Kim ’18 decided to investigate during Jan Plan, working with Bigelow Lab Senior Research Scientist David Fields.

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New Clues To A Mass Extinction: Colby Geologist Robert Gastaldo And Student Researchers Unearth Evidence That Contradicts Prevailing Models About Ancient Die-Offs, Stephen Collins Mar 2016

New Clues To A Mass Extinction: Colby Geologist Robert Gastaldo And Student Researchers Unearth Evidence That Contradicts Prevailing Models About Ancient Die-Offs, Stephen Collins

Colby Magazine

Colby geologists are rewriting deep time history, altering the script of how scientists understand the mother of all mass extinctions—the End-Permian event that occurred approximately 252 million years ago. Or to suggest that they don’t, in fact, understand it.

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They Care What You Eat: With Ingredients From The Classroom, Colbians Are Helping To Shape A New Maine, On The Farm, In The Sea, At The Restaurant Table, Gerry Boyle Mar 2016

They Care What You Eat: With Ingredients From The Classroom, Colbians Are Helping To Shape A New Maine, On The Farm, In The Sea, At The Restaurant Table, Gerry Boyle

Colby Magazine

With ingredients from the classroom, Colbians are helping to shape a new Maine, on the farm, in the sea, at the restaurant table.

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The Real Footprint Of Electric Vehicles, And What That Could Mean For Our Future, Krista Brown Jan 2016

The Real Footprint Of Electric Vehicles, And What That Could Mean For Our Future, Krista Brown

Journal of Environmental and Resource Economics at Colby

This paper looks at the impact of electric vehicles on CO2 emissions specifically based on the type of electricity used in each New England state analyzed. The research looks at the question of whether or not emissions will in fact be lowered as electric cars start to take the majority of vehicles used instead of the conventional cars that take up a much larger percent of the motor vehicles used today. Taking into account the use of electricity and how many sources of electricity also release a substantial amount of emissions, we see how valid the public opinion of electric …

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The Effect Of The Deer Population On The Number Of Car Accidents, Timothy J. Hallock Jr Jan 2016

The Effect Of The Deer Population On The Number Of Car Accidents, Timothy J. Hallock Jr

Journal of Environmental and Resource Economics at Colby

This paper examines the relationship between the deer population and the number of car accidents in New York State from 2002-2012. Data collected includes information on the amount of deer hunted, the number of car accidents, and the number of hunting permits issued. This paper also involves a county level analysis within New York State of 56 counties from 2007 - 2012. An important part of analysis of this paper is the examination of the Buck population vs. the Doe population on the number of car accidents. This is an important study because of its possible policy implications regarding the …

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The Effect Of Information On Avoidance Behavior And Bicycle Transportation: A Study Of “Spare The Air” And Bay Area Bikeshare, Paige W. Whistler Jan 2016

The Effect Of Information On Avoidance Behavior And Bicycle Transportation: A Study Of “Spare The Air” And Bay Area Bikeshare, Paige W. Whistler

Journal of Environmental and Resource Economics at Colby

This paper seeks to address the effect of “Spare the Air” pollution control alerts in the San Francisco Bay Area in California on the use of Bay Area BikeShare as a form of transportation. By observing the daily alerts on the duration of rides using BikeShare, this paper observes if STA ozone alerts are effective in changing human behavior. The results show that only as a subscriber to the BikeShare program and on an alert day does duration decrease whereas customers regardless of if it is an alert day will ride more often and at longer distances. The results contradict …

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Socioeconomic Attributes’ Relationship To Green Commercial Office Buildings, Tianyang Zhou Jan 2016

Socioeconomic Attributes’ Relationship To Green Commercial Office Buildings, Tianyang Zhou

Journal of Environmental and Resource Economics at Colby

This paper examines the relationship between the socioeconomic attributes of a state and its green commercial office space adaptation. I hypothesize that a state with high socioeconomic status will have a high green building adoption. Additionally, the high socioeconomic status states may be more likely to invest in green commercial buildings with higher LEED certification levels, and various types of LEED commericial office projects are affected by the socoeconomic attributes differently.

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Do Peers Get Punished: Stock Market Effect Of Bp Oil Spill On Peers, Yuga Koda Jan 2016

Do Peers Get Punished: Stock Market Effect Of Bp Oil Spill On Peers, Yuga Koda

Journal of Environmental and Resource Economics at Colby

This paper examines the stock market reaction to the British Petroleum oil spill on April 20, 2010. This event study looks at different sectors that may be affected by the oil spill. It finds that different industries do not have significant abnormal returns, with two exceptions. First, utilities companies have a very small positive abnormal return for a short period of time after the incident. Second, when only looking at BP's direct competitors, there is a statistically significant negative abnormal return, implying that BP's competitors are punished for BP's mishap.

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Media Effects On Solar Panel Installations Across 20 States, Casey Romeo Jan 2016

Media Effects On Solar Panel Installations Across 20 States, Casey Romeo

Journal of Environmental and Resource Economics at Colby

This paper looks at the relationship between media coverage of solar power and the solar panel installation at a state level. Specifically, it aims to find if more newspaper articles cause more households to adopt solar energy. Use data from 20 states from 2009 to 2014. I find that there is a modest, yet positive and statistically significant relationship between newspaper articles and installations, which suggests that the media does influence the decision to install solar panels. There is possible endogeneity between these two variables. Disentangling this endogeneity is beyond the scope of this research and would be a topic …

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Renewable Energy Consumption: Initiatives In Colorado And Washington, Robin K. Doroff Jan 2016

Renewable Energy Consumption: Initiatives In Colorado And Washington, Robin K. Doroff

Journal of Environmental and Resource Economics at Colby

This paper examines the use of policy mechanisms to increase renewable energy consumption within the United States. In order to effectively measure the change of renewable energy consumption, I analyze two initiatives that promote energy consumption from renewable sources and overall increases in energy conservation. Colorado and Washington had approved initiatives in the years 2004 and 2006, respectively. Although the results are not entirely statistically significant, I find that the initiatives lead to increases in total renewable energy consumption and decreases in total energy use.

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Stock Market Reactions To The Iarc Announcement Linking Red Meat And Processed Meat To Cancer, Scott B. Lehman Jan 2016

Stock Market Reactions To The Iarc Announcement Linking Red Meat And Processed Meat To Cancer, Scott B. Lehman

Journal of Environmental and Resource Economics at Colby

This study investigates how food companies were affected by the International Agency for Research on Cancer’s report that linked processed meat and red meat consumption to increased risk of cancer. The results indicate that neither fast food companies nor meat producers were greatly affected by the announcement in the days immediately following the release.

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Who Wants The Right To Know? An Analysis Of Gmo-Labeling In California, Sylvia M. Xu Jan 2016

Who Wants The Right To Know? An Analysis Of Gmo-Labeling In California, Sylvia M. Xu

Journal of Environmental and Resource Economics at Colby

There are many studies that have been done to examine what types of voting behavior or patterns are present when voting for environmental ballot measures. This paper examines what characteristics of people are likely to cause them to support Proposition 37 in California, an initiative that, if passed, would require GMO-labeling on all genetically modified foods. Using voting data at a zip code level, I use OLS regression to identify specifically what type of political party, education, occupation, household status, and income levels are more likely to support the bill. I also run weighted regressions by population and number of …

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Property Value Changes From Public Transportation: How The Greenbush Commuter Line Affected Property Values, Sarah C. Evans Jan 2016

Property Value Changes From Public Transportation: How The Greenbush Commuter Line Affected Property Values, Sarah C. Evans

Journal of Environmental and Resource Economics at Colby

Prior studies have investigated the impact on property values to the proximity of established public transportation stations. Public transportation is thought to increase value of towns and properties, giving residents more options for transportation to and around the city. Both benefits and consequences of public transportation exist, allowing for either a raise or lower of property values in towns with stops. This paper analyzes the Greenbush Commuter line in Massachusetts, seeing if the proximity to the stops has an affect on the property of values in the towns. A difference – in – difference model is used to investigate a …

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The Effectiveness Of The Colby College Electricity Competition On Promoting Electricity Conservation To Students, Jeff Vaz Jan 2016

The Effectiveness Of The Colby College Electricity Competition On Promoting Electricity Conservation To Students, Jeff Vaz

Journal of Environmental and Resource Economics at Colby

This paper examines the effectiveness of the Colby College electricity reduction competition in altering students’ behavior to conserve electricity. The Colby College electricity reduction competition is an information-based policy that Colby implemented to promote the conservation of electricity, which are a major contributor to greenhouse gas (GHG) emissions in the United States. The study analyzes if different residence halls reduce electricity consumption by different amounts during the competition period. Results indicate that only 4 of 22 residence halls reduced electricity usage during competition periods in a statistically significant manner. The study concludes that the electricity competition at Colby College is …

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Invited Introduction To Jerec, Matthew Kotchen Jan 2016

Invited Introduction To Jerec, Matthew Kotchen

Journal of Environmental and Resource Economics at Colby

No abstract provided.

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Welcome By The Editor, Nathan W. Chan Jan 2016

Welcome By The Editor, Nathan W. Chan

Journal of Environmental and Resource Economics at Colby

No abstract provided.

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Flying Past, Present, And Future, Gerry Boyle Jan 2016

Flying Past, Present, And Future, Gerry Boyle

Colby Magazine

The story is about Peter Agelasto ’96 and his groundbreaking digital-archiving work for Bob Dylan and others. Peter Agelasto thinks like an archaeologist to help Bob Dylan and others preserve their legacies.

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Development Of A Chemical Genetic Screen To Determine Synergistic Compounds With Laromustine In Treating Glioblastoma Multiforme Cultured Cells, Ryan Weeks Jan 2016

Development Of A Chemical Genetic Screen To Determine Synergistic Compounds With Laromustine In Treating Glioblastoma Multiforme Cultured Cells, Ryan Weeks

Honors Theses

Laromustine is a chemotherapeutic sulfonylhydrazine prodrug used in clinical trials to treat acute myeloid leukemia (AML) and glioblastoma multiforme (GBM). While treatment of AML with laromustine has more demonstrative clinical success, there are enough promising data against GBM to pursue additional pre-clinical and clinical experiments. To determine the synergistic effects caused by treating cultured GBM cells with laromustine and a library of FDA-approved compounds, a chemical genetic screen was developed. To optimize the screen, optimal cultured GBM cell seed density, growth period and maximum well capacity were determined. The treatment period for a lethal dose of laromustine in cultured GBM …

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The Effect Of Cyanobacterium Gloeotrichia Echinulata In The Belgrade Lakes, Maine, Harriet T. Rothschild Jan 2016

The Effect Of Cyanobacterium Gloeotrichia Echinulata In The Belgrade Lakes, Maine, Harriet T. Rothschild

Honors Theses

Gloeotrichia echinulata is a cyanobacteria species that has been increasingly forming blooms in oligotrophic lakes in the Northeastern United States. The Belgrade Lakes in central Maine have experienced increasing blooms over the past decades. Long Pond and Great Pond in the Belgrade Lakes region are popular locations for summer tourism and year-round residents. Research into G. echinulata is important to the Belgrade community because of potential effects to water quality, public health, and recreation. Studying G. echinulata bloom density throughout the summer and how it may affect the phosphorous cycle, the nitrogen cycle, and the plankton community will help scientists …

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Global Reach, Local Markets: The Challenges Of Leading Global Innovation, Sarah Higgins Jan 2016

Global Reach, Local Markets: The Challenges Of Leading Global Innovation, Sarah Higgins

Honors Theses

This Global Studies honors thesis addresses how managers and leaders of global firms manage innovation across multiple markets. Current research on multinational corporations provides an understanding of different kinds of innovation and the ways to attend to multiple markets. However, there is less documentation of how these innovation strategies are actually implemented on the ground and the tensions that these efforts might produce. Therefore, my research focuses in particular on the challenges and tensions faced by leaders of global firms as they implement transnational innovation strategies. This study is based upon in-depth interviews with 20 participants who held positions in …

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