This paper compares several, text and image, lossless and lossy, compression techniques for regular gridded elevation data, such as DEMs. Sp compress and progcode, the best lossless methods average 2.0 bits per point on USGS DEMs, about half the size of gzipped files, and 6.2 bits per point on ETOPO5 samples. Lossy compression produces even smaller files at moderate error rates. Finally, some t...

Background—In the United States, efforts are underway to improve timely access to percutaneous coronary intervention in ST-elevation myocardial infarction (STEMI). The Joint Commission (TJC) and the American College of Cardiology National Cardiovascular Data Registry (NCDR) have developed standardized definitions and clinical performance measures for STEMI. The purpose of this study was to dete...

Asymptomatic ST segment elevation in a life insurance applicant's ECG raises several prognostically important possibilities such as myocardial infarction, pericarditis, Brugada syndrome and early repolarization. This ECG case study discusses the ECG features involved in the differential diagnosis.

Ground tilt measurements demonstrate that Askja is in a state of unrest, and that in the period 1988 1991 a maximum 48 +/3 μrad tilt occurred down towards the centre of the caldera. This is consistent with 126 mm of deflation at the centre of the caldera with a 2.5 3.0 km depth to the source of deformation. The volume of the subsidence bowl is 6.2 x 106 m3. When combined with high precision mic...

Activity of total lactate dehydrogenase (LDH) and that of the heat-stable isozyme (LDH-1) was measured by the method of Strandjord and Clayson in the serum of 62 cardiac patients with congenital and valvular heart disease before and after cardiac catheterization and at follow-up examination after cardiac surgery. A universal elevation of both total and heat-stable LDH was found in patients with...

ST-elevation ACS (STE-ACS): patients present with acute chest pain and persistent (>20 minutes) ST-segment elevation. Most of these patients will develop an ST-elevation myocardial infarction (STEMI). Non-ST-elevation ACS (NSTE-ACS): patients present with acute chest pain but without persistent STsegment elevation. The ECG shows persistent or transient ST-segment depression or T-wave inversion,...

  Abstract   Background : Cancer has not been elucidated in colerectal site. C-reactive protein   (CRP) is a product synthesized in hepatocytes and has been reported to be up-regulated   by such proinflammatory cytokines as interleukin-1 (IL-1), interleukin-6 (IL-6),   and tumor necrosis factor (TNF). The significance of a preoperative serum elevation   was evaluated using CRP as a predictive i...

Little is known about the relationships between treeline elevation and climate at regional and local scales. It is compelling to fill this research gap with data from the Tibetan Plateau where some of the highest alpine treelines in the world are found. This research question partially results from the lack of in situ temperature data at treeline sites. Herein, treeline variables (e.g., elevati...