The Maine Annex, vol. 2, no. 14

The Maine Annex introduces a new \u27man on the street\u27 feature and covers the release of Prologue, Maine\u27s first inter-collegiate magazine

Socket preservation using deproteinized horse-derived bone mineral

Purpose: The healing process following tooth extraction apparently results in a pronounced resorption of the alveolar ridge. As a result, the width of alveolar ridge is reduced and severe alveolar bone resorption occurs. The purpose of this experiment is to clinically and histologically evaluate the results of using horse-derived bone mineral for socket preservation. Methods: The study comprised 4 patients who were scheduled for extraction as a consequence of severe chronic periodontitis or apical lesion. The extraction was followed by socket preservation using horse-derived bone minerals. Clinical parameters included buccal-palatal width, mid-buccal crest height, and mid-palatal crest height. A histologic examination was conducted. Results: The surgical sites healed uneventfully. The mean ridge width was 7.75±2.75 mm at baseline and 7.00±2.45 mm at 6 months. The ridge width exhibited no significant difference between baseline and 6 months. The mean buccal crest height at baseline was 7.5±5.20 mm, and at 6 months, 3.50±0.58 mm. The mean palatal crest height at baseline was 7.75±3.10 mm, and at 6 months, 5.00±0.82 mm. There were no significant differences between baseline and 6 months regarding buccal and palatal crest heights. The amount of newly formed bone was 9.88±2.90%, the amount of graft particles was 42.62±6.57%, and the amount of soft tissue was 47.50±9.28%. Conclusions: Socket preservation using horse-derived bone mineral can effectively maintain ridge dimensions following tooth extraction and can promote new bone formation through osteoconductive activities. Copyright © 2010 Korean Academy of Periodontology.

Speed of processing training results in lower risk of dementia

• A randomized trial examined the efficacy of three cognitive training programs. • Speed of processing cognitive training significantly reduced dementia risk. • Each session of speed training completed was associated with reduced dementia risk

Pulse‐labeling studies of carbon cycling in arctic tundra ecosystems: Contribution of photosynthates to soil organic matter

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/95486/1/gbc827.pd

Role of supplemental foods and habitat structural complexity in persistence and coexistence of generalist predatory mites

Variation in the strength of intraguild predation (IGP) may be related to habitat structural complexity and to additional resources outside the narrow predator-prey relationship. We studied the food web interactions on grape, which involves two generalist predatory mites. We evaluated the effects of grape powdery mildew (GPM) as supplemental food, and habitat structural complexity provided by domatia. Our findings suggest that structural and nutritional diversity/complexity promote predatory mite abundance and can help to maintain the beneficial mites - plants association. The effect of these factors on coexistence between predators is influenced by the supplemental food quality and relative differences in body size of interacting species

Shakespeare and the Senses

his article examines recent critical approaches to Shakespeare and the senses. Historicizing the senses has posed certain methodological challenges: what is the relationship between subjective sensory perceptions and broader cultural understandings of sensation? Does the sensate have a history? Recent work on each of the five senses demonstrates that the answer is yes. And, surprisingly, Shakespeare and his literary works are at the center of the field. As an important figure of the English literary canon, yet one about whom we know so very little, Shakespeare's sensory archive is both omnipresent and illusive. Shakespearean sensations thus provide a way of grappling with the larger methodological stakes of this field. This article examines a wide range of critical approaches to Shakespeare's sensory archive and ends by considering possible paths for further research. Publication cover image Volume6, Issue3 May 2009 Pages 726-740 Figures References Related Information Metrics Details © 2009 The Author. Journal Compilation © 2009 Blackwell Publishing Lt

Light and Heavy Fractions of Soil Organic Matter in Response to Climate Warming and Increased Precipitation in a Temperate Steppe

Soil is one of the most important carbon (C) and nitrogen (N) pools and plays a crucial role in ecosystem C and N cycling. Climate change profoundly affects soil C and N storage via changing C and N inputs and outputs. However, the influences of climate warming and changing precipitation regime on labile and recalcitrant fractions of soil organic C and N remain unclear. Here, we investigated soil labile and recalcitrant C and N under 6 years' treatments of experimental warming and increased precipitation in a temperate steppe in Northern China. We measured soil light fraction C (LFC) and N (LFN), microbial biomass C (MBC) and N (MBN), dissolved organic C (DOC) and heavy fraction C (HFC) and N (HFN). The results showed that increased precipitation significantly stimulated soil LFC and LFN by 16.1% and 18.5%, respectively, and increased LFC∶HFC ratio and LFN∶HFN ratio, suggesting that increased precipitation transferred more soil organic carbon into the quick-decayed carbon pool. Experimental warming reduced soil labile C (LFC, MBC, and DOC). In contrast, soil heavy fraction C and N, and total C and N were not significantly impacted by increased precipitation or warming. Soil labile C significantly correlated with gross ecosystem productivity, ecosystem respiration and soil respiration, but not with soil moisture and temperature, suggesting that biotic processes rather than abiotic factors determine variations in soil labile C. Our results indicate that certain soil carbon fraction is sensitive to climate change in the temperate steppe, which may in turn impact ecosystem carbon fluxes in response and feedback to climate change

Separate worlds? Explaining the current wave of regional economic polarization

Inter-regional and inter-metropolitan economic divergence is greater in many western developed countries than it has been in many decades. Divergence manifests itself in many ways, including per capita income, labor force participation, and the spatial the distribution of skills and returns to education. At the same time, geographical polarization of political preferences and electoral choices has increased, with gains in populism and nationalism in some regions, and broadening of socially liberal, pro-trade, and multicultural attitudes in other regions. The task of explaining these developments poses challenges to economic geography and regional and urban economics. These fields have already developed some of the building blocks of an account, but a number of important gaps persist. This article is devoted to identifying priorities for regional science and urban economics, the new economic geography, and proper economic geography to tackle the key mechanisms behind divergence as well as to integrate them in a common overall framework