Deep gas wells and fields have the characteristics of high pressure. The vibration tubing string during production causes to be subjected severe stress even dynamic fatigue failure. Therefore, this article is based on finite element theory, aiming at large-size strings in deep wells. mechanics model mathematical packer high-pressure were established, ANSYS software was re-developed. analysis pr...

Articles with 100 citations or more in the scientific literature and with at least one author with Brazilian affiliation, were identified in the Thomson-ISI (Institute for Scientific Information) Web of Science bibliometric database covering a 10-year period, from 1994 to 2003 (see Packer and Meneghini 2006); 248 (0.23%) out of a total of 109,916 articles with Brazilian affiliation were identif...

N.A. Mark Estes III, MD, FAHA, Chair; Ralph L. Sacco, MS, MD, FAHA; Sana M. Al-Khatib, MD, MHS; Patrick T. Ellinor, MD, PhD, FAHA; Judy Bezanson, DSN, CNS, RN; Alvaro Alonso, MD, MPH; Charles Antzelevitch, PhD, FAHA; Randall G. Brockman, MD; Peng-Sheng Chen, MD; Sumeet S. Chugh, MD, FAHA; Anne B. Curtis, MD, FAHA; John P. DiMarco, MD, PhD; Kenneth A. Ellenbogen, MD, FAHA; Andrew E. Epstein, MD,...

Link quality estimation of reliability-crucial wireless sensor networks (WSNs) is often limited by the observability and testability of single-chip radio transceivers. The estimation is often based on collection of packer-level statistics, including packet reception rate, or vendor-specific registers, such as CC2420’s Received Signal Strength Indicator (RSSI) and Link Quality Indicator (LQI). T...

Body packing is a common method for illegal drug trafficking. Complications associated with body packing can be severe and even lead to rapid death. Thus, a timely diagnosis is warranted. As most body packers initially do not show any symptoms, making a correct diagnosis can be rather challenging. We describe a case of a 41-year-old male, who was admitted with an epileptic seizure and who turne...

A workshop on childhood atypical teratoid/rhabdoid tumors of the central nervous system, sponsored by the National Cancer Institute and the Pediatric Brain Tumor Foundation of the United States, was held on January 29, 2001 in Bethesda, Maryland. Drs. Malcolm Smith, Jaclyn Biegel, and Roger Packer hosted the meeting. There were 22 participants from 14 institutions. The sessions were designed to...

Groundwater sampling from open boreholes in fractured-rock aquifers is particularly challenging because of mixing and dilution of fluid within the borehole from multiple fractures. This note presents an alternative to traditional sampling in open boreholes with packer assemblies. The alternative system called ZONFLO (zonal flow) is based on hydraulic control of borehole flow conditions. Fluid f...

Methods: A total of 1050 pigs were assigned to pens (n = 48) on the basis of weight and gender. Average body weight at trial initiation was 78.5 kg. Four dietary treatments were randomly assigned to pens and stratified across weight and gender. Dietary treatments included control (0 g/ tonne RAC for 35 days); constant (5.0 g/ tonne RAC for 35 days); Step 2 (5.0 g/ tonne RAC for 14 days then 10....