Analysis of a Stormwater Pond for Stormwater Management on the Buffalo State College Campus – Year 1 Operation Conditions

Under U.S.EPA Phase II stormwater regulations Buffalo State was required to develop a stormwater management plan. This plan pursues both hard‐engineering and low impact development approaches for stormwater management. As part of the plan, a detention pond came on‐line in early summer, 2010, to collect flow before it discharges to Scajaquada Creek. The objective of this study was to assess the detention pond impact on water quantity and quality prior to discharge to the creek. A meter was installed in 2007 (pre‐construction) and 2010 (post‐construction) to record stormwater discharge to Scajaquada Creek. Regression analysis between rainfall and runoff characteristics showed that peak discharge was higher in 2010 than 2007 for the same rainfall depth, while the relationship between peak discharge and peak rainfall intensity was similar for the two years. Total discharge volume for rainfall events \u3e0.5” was greater in 2010 than 2007. Samples for total suspended solids (TSS), E. coli, total phosphorus, and nitrate were collected at the inflow to the pond, within the pond, and at the outflow from the pond throughout 6 storms, May‐September, 2010. On average, the pond did not reduce TSS and E. coli levels, but is becoming more efficient in reducing TSS as vegetation becomes better established. There were mixed results for phosphorus and nitrate, as levels were reduced for about 50% of the storms, but were higher at the outlet for other storms. Because the pond is new, there is a need for continued monitoring to determine the time required for it to reach design performance

Vagabond

In lieu of an abstract, below is the essay\u27s first paragraph. I can\u27t tell you how many time I\u27ve walked these streets. The same streets. Over and over, counting the cracks, avoiding the discarded candy bar wrappers and the occasional trampled magazine. And I wasn\u27t alone, of course. Alone as my footsteps echoed from alley to alley. Past beggars, businessmen, and derelicts, all in search for their helpless prey. And this place, this city of decadence, it got bleeding cold. Why then, did it have to happen like this

Vagabond

In lieu of an abstract, below is the essay\u27s first paragraph. I can\u27t tell you how many time I\u27ve walked these streets. The same streets. Over and over, counting the cracks, avoiding the discarded candy bar wrappers and the occasional trampled magazine. And I wasn\u27t alone, of course. Alone as my footsteps echoed from alley to alley. Past beggars, businessmen, and derelicts, all in search for their helpless prey. And this place, this city of decadence, it got bleeding cold. Why then, did it have to happen like this

Automated Acquisition of Cryo-Electron Microscope Images With Slow-Scan CCD Cameras and Microscope Control

Recording electron microscope images of frozen-hydrated samples under cryo-conditions is a difficult and challenging task. The inherently low sample contrast makes accurate focusing difficult. Furthermore most frozen-hydrated samples are very beam sensitive so that electron dose on the sample must be kept to the minimum. In recent years, the new generation of cooled slow-scan CCD (SSC) cameras have shown superior properties in sensitivity, resolution, dynamic range, linearity, and more importantly their ability to display images on-line. Computer control of electron microscopes via the standard RS232C serial interface has been greatly facilitated by the use of on-line CCD images. We have developed a software package that allows cryo-electron microscope images to be automatically acquired onto a CCD camera via computer control of the microscope. This fully automated feature allows quality cryo-electron microscope images to be recorded with increased efficiency and enhances the possibility of obtaining three-dimensional reconstructions from images.</jats:p