Local field potentials (LFPs) in cortex reflect synchronous fluctuations in the synaptic activity of local populations of neurons. The power of high frequency (>30 Hz) oscillations in LFPs is locked to the phase of low frequency (<30 Hz) oscillations, an effect known as phase-amplitude coupling (PAC). While PAC has been observed in a variety of cortical regions and animal models, its functional...

The preoperative assessment clinic (PAC) has been implemented in most major hospitals. However, there is no uniformity in the way PACs are organised. We compared the organisational structure of the PACs from all eight university hospitals in The Netherlands, looking at the following variables: number of patients visiting the PAC, staffing of the PAC, opening hours, scheduling, and additional pr...

The objective of the study was to review the implementation of Post Abortion Care and effective linkage to other post abortion services in Ebonyi State University Teaching Hospital, Abakaliki, Nigeria. Data on PAC over a five year period (July, 2004 to June, 2009) were analyzed and a standardized questionnaire was administered to 45 direct PAC service providers. Abortion complications constitut...

We have calculated the excess free energy of mixing of 1053 binary mixtures with the OPLS-AA force field using two different methods: thermodynamic integration (TI) of molecular dynamics simulations and the Pair Configuration to Molecular Activity Coefficient (PAC-MAC) method. PAC-MAC is a force field based quasi-chemical method for predicting miscibility properties of various binary mixtures. ...

The artificial chromosome represents a useful tool for gene transfer, both as cloning vectors and in chromosome biology research. To generate a Plasmodium artificial chromosome (PAC), we had to first functionally identify and characterize the parasite's centromere. A putative centromere (pbcen5) was cloned from chromosome 5 of the rodent parasite P. berghei based on a Plasmodium gene-synteny ma...

Peripheral venous access in children with sickle cell anaemia (SCA) requiring regular blood transfusions can become difficult over time. Previous reports have suggested the use of totally implantable venous access devices, Portacaths (PAC) in this patient group are associated with unacceptable high rates of complications. We present our experience in seven children with SCA over a 9-year period...

OBJECTIVE To assess the relative impact of clinical factors versus nonclinical factors-such as postacute care (PAC) supply-in determining whether patients receive care from skilled nursing facilities (SNFs) or inpatient rehabilitation facilities (IRFs) after discharge from acute care. DATA SOURCES AND STUDY SETTING Medicare acute hospital, IRF, and SNF claims provided data on PAC choices; pre...

Over the last five years, comprehensive national surveys of the cost of post-abortion care (PAC) to national health systems have been undertaken in Ethiopia, Uganda, Rwanda and Colombia using a specially developed costing methodology-the Post-abortion Care Costing Methodology (PACCM). The objective of this study is to expand the research findings of these four studies, making use of their exten...

OBJECTIVE To comparatively examine the effects of adiposity on the levels of plasma renin activity (PRA), plasma aldosterone concentration (PAC), and aldosterone-renin ratio (ARR) in young black and white children. STUDY DESIGN We prospectively assessed 248 black and 345 white children and adolescents. A novel analytical technique was used to assess the concurrent influences of age and body m...

Building on the work of Daniely et al. (STOC 2014, COLT 2016), we study the connection between computationally efficient PAC learning and refutation of constraint satisfaction problems. Specifically, we prove that for every concept class P, PAC-learning P is polynomially equivalent to “random-right-hand-side-refuting” (“RRHS-refuting”) a dual class P∗, where RRHS-refutation of a class Q refers ...