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Potsdam, NY, United States

Not to be confused with the German University of Potsdam in Berlin-BrandenburgThe State University of New York at Potsdam, also known as SUNY Potsdam, or, colloquially, Potsdam, is a public university located in the village of Potsdam in St. Lawrence County, in the U.S. state of New York. Founded in 1816, it is among the 50 oldest colleges in the United States. It is composed of the College of Arts & science, the School of Education and Professional Studies, and the Crane School of Music. Wikipedia.

Bou-Abdallah F.,The State University of New York at Potsdam
Biochimica et Biophysica Acta - General Subjects | Year: 2010

Background: Ferritins are ubiquitous and well-characterized iron storage and detoxification proteins. In bacteria and plants, ferritins are homopolymers composed of H-type subunits, while in vertebrates, they typically consist of 24 similar subunits of two types, H and L. The H-subunit is responsible for the rapid oxidation of Fe(II) to Fe(III) at a dinuclear center, whereas the L-subunit appears to help iron clearance from the ferroxidase center of the H-subunit and support iron nucleation and mineralization. Scope of review: Despite their overall similar structures, ferritins from different origins markedly differ in their iron binding, oxidation, detoxification, and mineralization properties. This chapter provides a brief overview of the structure and function of ferritin, reviews our current knowledge of the process of iron uptake and mineral core formation, and highlights the similarities and differences of the iron oxidation and hydrolysis chemistry in a number of ferritins including those from archaea, bacteria, amphibians, and animals. General Significance: Prokaryotic ferritins and ferritin-like proteins (Dps) appear to preferentially use H2O2 over O2 as the iron oxidant during ferritin core formation. While the product of iron oxidation at the ferroxidase centers of these and other ferritins is labile and is retained inside the protein cavity, the iron complex in the di-iron cofactor proteins is stable and remains at the catalytic site. Differences in the identity and affinity of the ferroxidase center ligands to iron have been suggested to influence the distinct reaction pathways in ferritins and the di-iron cofactor enzymes. Major conclusions: The ferritin 3-fold channels are shown to be flexible structures that allow the entry and exit of different ions and molecules through the protein shell. The H- and L-subunits are shown to have complementary roles in iron oxidation and mineralization, and hydrogen peroxide appears to be a by-product of oxygen reduction at the FC of most ferritins. The di-iron(III) complex at the FC of some ferritins acts as a stable cofactor during iron oxidation rather than a catalytic center where Fe(II) is oxidized at the FC followed by its translocation to the protein cavity. © 2010 Elsevier B.V. Source

Reyome N.D.,The State University of New York at Potsdam
Journal of Aggression, Maltreatment and Trauma | Year: 2010

Within the last three decades, researchers have begun to investigate the long-term consequences of childhood emotional maltreatment on interpersonal and intrapersonal functioning. These investigations have led to the realization that survivors of childhood emotional maltreatment suffer from myriad psychological and social difficulties. These difficulties influence the quality and nature of intimate relationships formed by emotional abuse survivors. The empirical literature looking at the effect of childhood emotional maltreatment on intimate relationships is summarized and discussed. Implications of the current body of research for future research and clinical practice are addressed. Copyright © Eileen L. Zurbriggen. Source

Betrus A.,The State University of New York at Potsdam
TechTrends | Year: 2012

The content and emphasis of the introductory technology courses for undergraduate preservice teachers has historically been examined, with the earliest study conducted by Stracke in 1932. In an attempt to identify trends in the course DeKieffer conducted a series of studies over ten year intervals, in 1947, 1957, 1967, and 1977. In 2000 the first in a similar series of ten-year studies was conducted, and this 2010 study is the first update to that study. Results indicate that the introductory technology course has gone through a particularly dynamic era recently, with nearly half of all topics appearing as new in 2010. Of particular note among the new topics are SMART Boards and Web 2. 0 technologies such as Blogs, Wikis, and Professional and Social Networking Sites. © 2012 Springer Science+Business Media New York. Source

Slatt R.M.,University of Oklahoma | O'Brien N.R.,The State University of New York at Potsdam
AAPG Bulletin | Year: 2011

The identification of "organoporosity" (microscale and nanoscale pores within organic matter in shales), its importance to storage and perhaps transfer of gas molecules through shales, and methods for gathering three-dimensional images of the pores, such as by argon-ion milling and/or field emission scanning electron microscopy, have all been well documented and discussed for unconventional gas shales. However, other types of pores exist within shales that can be important to storage and migration of gas (and oil), and other technologies are available for their identification and imaging. The different pore types found in the Barnett and Woodford shales are described and classified in this article. Copyright © 2011. The American Association of Petroleum Geologists. All rights reserved. Source

Stobiecka M.,The State University of New York at Potsdam | Hepel M.,The State University of New York at Potsdam
Biomaterials | Year: 2011

In view of the prospective applications of polyamine coatings in functional gold nanoparticles for use as carriers in gene delivery systems, in tissue repair and as bactericidal and virucidal non-toxic vehicle, we have investigated the interactions of poly-l-lysine (PLL) with gold nanoparticles (AuNP). Since direct binding of PLL to AuNP is not strong at neutral pH, we have focused on PLL interactions with carboxylated self-assembled monolayers (SAM) on AuNP, such as the citrate-capped AuNP. The double-shell nanoparticles AuNP@Cit/PLL thus produced do not contain any toxic thiols. We have observed strong electrostatic interactions between polycationic chains of PLL and AuNP@Cit in weakly acidic to weakly alkaline solutions (pH 5-9), as evidenced by the bathochromic shift of the local surface plasmon (SP) band and strong increase in resonance elastic light scattering (RELS) intensity. The stoichiometry of interactions evaluated on the basis of RELS data indicates on a hyper-Langmuirian type of interactions with stoichiometric coefficient n = 1.35 (PLL AuNP@Cit). From the RELS titration data, a shift of the deprotonation constant for the bound PLL has been determined (pKa = 11.6 for the bound PLL vs. 10.48 for the free PLL). The deprotonation of PLL leads to AuNP aggregate disassembly, evidenced by sharp RELS decline and hypsochromic shift of SP band. We have found that under these conditions, a residual aggregation due to the interparticle interactions between β-sheets of PLL overcoat become predominant. The molecular dynamics simulations indicate that multiple hydrogen bonds can also be formed between the PLL linker and the shell molecules of AuNP@Cit. The double-shell nanoparticles, AuNP@Cit/PLL, have been shown to attract DNA molecules using highly sensitive RELS measurements presenting the proof-of-concept for the suitability of this non-toxic nanostructured material for gene delivery applications. The advantage of the proposed material is no toxicity related to the ligand release in gene delivery processes in contrast to the thiol-functionalized AuNP. © 2011 Elsevier Ltd. Source

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