Gigi Gaucher-Morales, 1939-2008

Gigi Gaucher-Morales, 1939-200

In Memoriam: Jon S. Vincent (1938-1999)

In Memoriam: Jon S. Vincent (1938-1999

Introducción

Introducció

Quantifying the Carbon Sequestration and Economic Potential of Natural Climate Solutions from Maine\u27s Working Forests

The purpose of this thesis is to develop a dynamic, regionally integrated forest sector model framework to identify cost-effective forest management and carbon sequestration practices across Maine’s 17,000,000 acres from 2019 to 2119. We take a three-pronged approach, each with its own set of inputs, parameters, accuracies, and skill level requirements. To achieve this we first review a group of biophysical, spatial, and silvicultural studies in the northeast to determine changes and costs of forest carbon sequestration across different treatments and harvesting practices. This allows us to estimate sequestration above baseline, the cost of mitigation, and determine the strength of Maine’s forest carbon sink over various levels of implementation via landowner participation. Secondly, we analyze forest growth and yield projections (and subsequently carbon sequestration) across 6 different management practices from the Forest Vegetation Simulator (FVS) and determine the net present value (NPV) of each pathway across 100 years. Lastly, we use the commercialized linear programming solver Woodstock to estimate total NPV to the point where harvest levels are maintained simultaneously with increasing forest carbon sequestration under different economic and policy conditions. In Woodstock, we employ both a regimes-based approach (Model I) and a treatment-based approach (Model II). Combined, the three approaches create a range of carbon sequestration estimates and total NPV of timber harvests and carbon credits across harvest and area constraints. Both Woodstock models reveal that conducting harvests on stands well-suited to fast growth and recovery can use a mix of intensive, partial harvests, and thinnings can increase forest carbon stocking while also satisfying historical demand for harvested wood products over the long term. This integrated modeling approach will facilitate in developing a more precise forecast over a 100-year horizon, allowing us to determine the carbon price or policy incentive that minimizes the societal cost of increasing mitigation level from Maine’s diverse forest landscape

Annealing characteristics of amorphous silicon alloy solar cells irradiated with 1.00 MeV protons

Amorphous Si:H and amorphous Si sub x, Ge sub (1-x):H solar cells were irradiated with 1.00 MeV proton fluences in the range of 1.00E14 to 1.25E15 cm (exp -2). Annealing of the short circuit current density was studied at 0, 22, 50, 100, and 150 C. Annealing times ranged from an hour to several days. The measurements confirmed that annealing occurs at 0 C and the initial characteristics of the cells are restored by annealing at 200 C. The rate of annealing does not appear to follow a simple nth order reaction rate model. Calculations of the short-circuit current density using quantum efficiency measurements and the standard AM1.5 global spectrum compare favorably with measured values. It is proposed that the degradation in J sub sc with irradiation is due to carrier recombination through the fraction of D (o) states bounded by the quasi-Fermi energies. The time dependence of the rate of annealing of J sub sc does appear to be consistent with the interpretation that there is a thermally activated dispersive transport mechanism which leads to the passivation of the irradiation induced defects

Deoxygenation of organic nitrites

Organic nitrites deoxygenated in presence of tervalent phosphorus reagent

Radiation resistance studies of amorphous silicon films

Hydrogenated amorphous silicon thin films were irradiated with 2.00 MeV helium ions using fluences ranging from 1E11 to 1E15 cm(-2). The films were characterized using photothermal deflection spectroscopy and photoconductivity measurements. The investigations show that the radiation introduces sub-band-gap states 1.35 eV below the conduction band and the states increase supralinearly with fluence. Photoconductivity measurements suggest the density of states above the Fermi energy is not changing drastically with fluence

Radiation resistance of thin-film solar cells for space photovoltaic power

Copper indium diselenide, cadmium telluride, and amorphous silicon alloy solar cells have achieved noteworthy performance and are currently being studied for space power applications. Cadmium sulfide cells had been the subject of much effort but are no longer considered for space applications. A review is presented of what is known about the radiation degradation of thin film solar cells in space. Experimental cadmium telluride and amorphous silicon alloy cells are reviewed. Damage mechanisms and radiation induced defect generation and passivation in the amorphous silicon alloy cell are discussed in detail due to the greater amount of experimental data available

An Editorial Farewell

An Editorial Farewel

The Lived Experiences of Male Victims of Intimate Partner Violence

This qualitative study explored the lived experiences of male victims of intimate partner violence (IPV). Few studies exist about the experiences of men who are victims of female-perpetrated IPV and there are not many studies about these men\u27s experiences in seeking and receiving psychological help. Maslow\u27s hierarchy of needs and Peck\u27s gender role strain paradigm guided this study to understand victimology and perceptions of gender roles. Research questions attempted to understand the lived experiences of male IPV victims of female-perpetrated IPV, accessing supportive and psychological services, and their experiences of these services. Seven male individuals were recruited through flyers in community centers, law enforcement agencies, and social media sites; 5 participants were interviewed via Skype and 2 responded via e-mail. Data from interviews were analyzed and coded following an interpretative phenomenological method. Five themes were identified from 2 research questions including: male victimization is seen as less severe than female victimization, family is not easy to talk to about experience, therapy and hospitalization were used, law enforcement officers are biased, and mental health workers are routine. Findings were evaluated with existing literature and suggestions are made for help-seeking option accessibility for male victims. This study promotes social change by discussing how supporting survivors may decrease negative gender roles and social norms while promoting the betterment of professionals who work with male victims. Victim-centered services, patient-centered approaches, and treatment and support for survivors of IPV will help to improve awareness about male victims in society while offering insight to decrease negative stigma