منابع مشابه
New flier glides into the Pacific
Linking fluids as they twist and writhe Helicity is a measure of corkscrew-like motion described by the amount of twisting, writhing, and linking in a fluid. Total helicity is conserved for ideal fluids, but how helicity changes in real fluids with even tiny amounts of viscosity has been an open question. Scheeler et al. provide a complete measurement of total helicity in a real fluid by using ...
متن کاملFLiER: Practical Topology Error Correction Using Sparse PMUs
In this paper, we present a Fingerprint Linear Estimation Routine (FLiER) to identify topology changes in power networks using readings from sparsely-deployed phasor measurement units (PMUs). When a power line, load, or generator trips in a network, or when a substation is reconfigured, the event leaves a unique “voltage fingerprint” of bus voltage changes that we can identify using only the po...
متن کاملMemoirs of a frequent flier: Phylogenomics reveals 18 long-distance dispersals between North America and South America in the popcorn flowers (Amsinckiinae).
PREMISE OF THE STUDY American amphitropical disjunction (AAD) is an important but understudied New World biogeographic pattern in which related plants occur in extratropical North America and South America, but are absent in the intervening tropics. Subtribe Amsinckiinae (Boraginaceae) is one of the richest groups of plants displaying the AAD pattern. Here, we infer a time-calibrated molecular ...
متن کاملMalnutrition: a frequent misdiagnosis for hemodialysis patients.
Precision in the use of words is necessary in any discipline, and this holds true for physicians and investigators dealing with patients who have chronic kidney disease. Specifically, malnutrition is often used to describe a group of abnormalities — fatigue, loss of body weight with muscle mass being replaced by fatty tissue, declining serum proteins — present in many such patients. However, ma...
متن کاملPostoperative Cognitive Dysfunction in Elderly Patients: A Frequent Complication
also weeks or months after surgery and not always recognized in the early postoperative period because its recognition need the employment of neurological and psychological tests [2]. POCD must be distinguished by delirium that is present early in postoperative period and is characterized by an acute change of attention and thought. It can be diagnosed utilizing confusion assessment method (CAM...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: BMJ
سال: 2005
ISSN: 0959-8138,1756-1833
DOI: 10.1136/bmj.330.7496.869