Lawyer\u27s Guild, BALSA Hold Demonstration Against Racism

Article from the March 26, 1981 issue of The Advocate (vol.11:no.10) reporting on a demonstration held by the National Lawyer\u27s Guild and the Black American Law Student Association on Wednesday, March 18. The demonstration was held to publicize a real problem at Marshall-Wythe: the lack of minority faculty and students.https://scholarship.law.wm.edu/blackhistorywmls/1033/thumbnail.jp

Seasonal Movements, Migratory Behavior, and Site Fidelity of West Indian Manatees along the Atlantic Coast of the United States as Determined by Radio-telemetry

The study area encompassed the eastern coasts of Florida, Georgia, and South Carolina, including inland waterways such as the St. Johns River (Fig. 1). Manatees inhabited the relatively narrow band of water that lies between the barrier beaches and the mainland, occasionally venturing into the ocean close to shore. Between Miami and Fernandina Beach, Florida, 19 inlets provided manatees with corridors between the intracoastal waters and the Atlantic Ocean; the distance between adjacent inlets averaged 32 km(SD = 24 km) and varied from 3 to 88 km. Habitats used by manatees along this 900-km stretch ofcoastline varied widely and included estuaries, lagoons, rivers and creeks, shallow bays and sounds, and ocean inlets. Salinities in most areas were brackish, but ranged from completely fresh to completely marine. The predominant communities of aquatic vegetation also varied geographically and with salinity: seagrass meadows and mangrove swamps in brackish and marine waters along the southern half of peninsular Florida; salt marshes in northeastern Florida and Georgia; benthic macroalgae in estuarine and marine habitats; and a variety of submerged, floating, and emergent vegetation in freshwater rivers, canals, and streams throughout the region. Radio-telemetry has been used successfully to track manatees in other regions ofFlorida (Bengtson 1981, Powell and Rathbun 1984, Lefebvre and Frohlich 1986, Rathbun et al. 1990) and Georgia (Zoodsma 1991), but these early studies relied primarily on conventional VHF (very high frequency) transmitters and were limited in their spatial and temporal scope (see O'Shea and Kochman 1990 for overview). Typically, manatees were tagged at a thermal refuge in the winter and then tracked until the tag detached, usually sometime between the spring and fall of the same year. Our study differs from previous research on manatee movements in several important respects. First, we relied heavily on data from satellite-monitored transmitters using the Argos system, which yielded a substantially greater number of locations and more systematic collection of data compared to previous VHF tracking studies (Deutsch et al. 1998). Second, our tagging and tracking efforts encompassed the entire range of manatees along the Atlantic coast, from the Florida Keys to South Carolina, so inferences were not limited to a small geographic area. Third, we often used freshwater to lure manatees to capture sites, which allowed tagging in all months of the year; this provided more information about summer movement patterns than had previous studies which emphasized capture and tracking at winter aggregations. Finally, the study spanned a decade, and success in retagging animals and in replacing transmitters allowed long-term tracking ofmany individuals. This provided the opportunity to investigate variation in seasonal movements, migratory behavior, and site fidelity across years for individual manatees. (254 page document.

Conduction band offset in InAs/GaAs self-organized quantum dots measured by deep level transient spectroscopy

The heterostructure conduction band offset, ΔEc,ΔEc, in InAs/GaAs self-organized quantum dots has been measured by deep level transient spectroscopy. Measurements were made with Au–Al0.18Ga0.82AsAu–Al0.18Ga0.82As Schottky diodes in which the multilayer dots are embedded in the ternary layer. The estimated value of the band offset ΔEc = 341±30 meV.ΔEc=341±30meV. © 2000 American Institute of Physics.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/69734/2/APPLAB-76-18-2571-1.pd

Consumption of Aquatic Plants by the West Indian Manatee

Because manatees (Trichechus manatus) are large aquatic herbivores they have often been considered as potential control agents for aquatic plants. Several problems are associated with this concept, and a major one has been the gap in knowledge concerning food consumption rates of manatees. We estimated food consumption by measuring chews per unit time, chews per amount of food consumed, and time spent chewing food. Data were collected on captive manatees of various sizes and used to construct regression equations that predict consumption rates based on body size. Time budget data were obtained by radiotelemetry of free-ranging animals. Estimates of consumption rates for manatees eating hydrilla (Hydrilla verticillata Royle) were compared to the estimates biomass of hydrilla in Kings Bay, Florida, the overwintering site for a large manatee populations (116 in the winter of 1980-1981). Estimates show that nearly ten times as many manatees would have been needed just to consume the standing biomass of hydrilla. The inefficiency of manatees as control agents for aquatic plants becomes even more apparent when plant productivity is included in these estimates

Fluctuations in methane and carbon dioxide concentrations in the nearsurface zone and their genetic characterization in abandoned and active coal mines in the SW part of the Upper Silesian Coal Basin, Poland

The objective of this paper is to determine the origin and variability of methane and carbon dioxide concentrations in the near-surface zone and of coalbed methane in the SW part of the Chwałowice Trough and adjacent areas of the Main Syncline of the Upper Silesian Coal Basin (USCB). For this purpose soil-gas samples were taken at 202 measuring points, arranged along 5 profiles located in the mining area of the abandoned 1 Maja mine and directly adjacent areas as well as in the vicinity of four abandoned and remediated mining shafts. The maximum methane and carbon dioxide concentrations in the gas samples measured exceeds 22 and 9 vol%, respectively. The carbon isotope composition of methane and carbon dioxide was determined in samples in which elevated concentrations of these gases were found. Moreover, seven coalbed gas samples and bituminous coals were collected from coal seams exclusively from virgin parts of the Anna, Marcel, Jastrzębie, and Zofiówka mines. These data were supplemented with results of archival research for genetic interpretation of coalbed gases. Research reveals that typical humic low- and medium-volatile bituminous coals occur in Mississippian and Pennsylvanian coal-bearing strata in the study area. Fluctuations in methane and carbon dioxide concentration in the near-surface zone are related to the lithostratigraphy and tectonics of the area as well as to complicated methane depth distribution. Faults may play an important role in the microseepage of gases from deep to the near-surface zone. The connection of near-surface gases with subsurface gases was confirmed by similar stable carbon isotope composition in the methane recorded in the soil-gas samples and in the gas samples from the coal seams and sandstones of the Carboniferous formations. Distribution of anomalous methane concentrations recorded in soil-gas samples taken from profiles may indicate natural gas accumulations in the top zone of the Pennsylvanian coal-bearing formations. One example of this kind of accumulation is the Marklowice natural gas field, located within the mining area of the Marcel coal mine. Relatively high methane concentrations measured in soil gas in the vicinity of shafts I and III indicate that the degassing systems of closed and remediated mining shafts are not fully effective. Increases in carbon dioxide concentrations in the surface zone and frequent associated decreases in methane concentration were most often the result of microbial methane oxidation

Bioresorbable everolimus-eluting vascular scaffold in patients with ST-segment elevation myocardial infarction: Optical coherence tomography evaluation and clinical outcomes

Background: Bioresorbable vascular scaffold (BVS) implantation is a new, promising treat­ment method of coronary artery disease. Preliminary data in patients with stable angina are encouraging. However, the utility of BVS was not sufficiently evaluated in the setting of acute thrombotic lesions. The aim of this study was an optical coherence tomography (OCT) assessment of acute procedural result of the everolimus-eluting BVS implantation in patients with ST segment elevation myocardial infarction (STEMI) and evaluation of mid-term clinical outcomes. Methods: OCT examination was conducted in 23 STEMI patients who underwent primary angioplasty with BVS implantation. Off-line qualitative and quantitative coronary angiography and OCT analyses were performed by an independent core laboratory. Results: Successful procedural and clinical results were achieved in 95.7% of patients, and device success was observed in all patients. In OCT evaluation, most of the struts (95.4 ± ± 7.96%) were well apposed, 4.6 ± 5.71% were classified as malapposed. The final minimum lumen diameter was 2.6 ± 0.35 mm, minimum scaffold area was 6.9 ± 1.54 mm2 and final residual stenosis was 8.8 ± 24.37%. Edge dissections were found in 3 (7.7%) lesions. Median follow-up period was 229 (interquartile range 199–248) days. One myocardial infarction, due to sub-acute stent thrombosis, occurred in a patient who discontinued pharmacotherapy. Conclusions: The study shows that everolimus-eluting BVS implantation in STEMI is safe and feasible. The OCT evaluation confirmed excellent acute performance with appropriate scaffold expansion and low rate of malapposition.  

Tissue coverage of paclitaxel and sirolimus eluting stents in long term follow-up: Optical coherence tomography study

Background: Implantation of drug eluting stents (DES) has become a standard treatment ofpatients undergoing percutaneous coronary intervention (PCI). Incomplete strut coverage isa potential risk factor for late stent thrombosis. Optical coherence tomography (OCT) enablesin vivo identification of incomplete neointimal coverage.Methods: Study included 62 patients after sirolimus eluting stents (SES) or paclitaxel elutingstents (PES) implantation. OCT examination was performed at least 24 months after theinitial procedure (35.4± 9.4 months). In cross-sectional still frames selected from each 1 mm ofanalyzed stents a total number of visible struts and number of struts with or without completeneointimal coverage was assessed. Measurements of neointimal coverage, presented as a meanthickness of tissue, were performed. Patients were followed up for 3 years and the frequency ofmajor adverse cardiac events was recorded.Results: In the analyzed 28 SES and 37 PES 9998 struts were identified. Complete neointimalcoverage was observed in 83.5% and 79.2% of SES and PES struts respectively (p = 0.48).There was no difference in incidence of not covered or malapposed struts between SES and PES groups. Mean thickness of the tissue covering SES struts was 0.165 ± 0.095 mm, and 0.157 ± 0.121 mm for PES. The mean neointimal thickness difference (SES vs. PES) was notstatistically significant. In a 36 months follow-up 1 death was observed — potentially attributedto stent thrombosis.Conclusions: A long term OCT follow-up after DES implantation shows high incidence ofuncovered struts regardless of the stent type. Clinical significance of this finding remains questionableand requires further large scale trials

Topological Andr\'e-Quillen homology for cellular commutative SS-algebras

Topological Andr\'e-Quillen homology for commutative $S$-algebras was introduced by Basterra following work of Kriz, and has been intensively studied by several authors. In this paper we discuss it as a homology theory on CW $S$-algebras and apply it to obtain results on minimal atomic $p$-local $S$-algebras which generalise those of Baker and May for $p$-local spectra and simply connected spaces. We exhibit some new examples of minimal atomic $S$-algebras.Comment: Final revision, a version will appear in Abhandlungen aus dem Mathematischen Seminar der Universitaet Hambur