Over the last two decades there have been a growing number of designs for positron emission tomography (PET) cameras optimized to image the breast. These devices, commonly known as positron emission mammography (PEM) cameras allow much more spatial resolution by putting the photon detectors directly on the breast. PEM cameras have a compact geometry with a restricted field of view (FOV) thus ex...

BACKGROUND Protein-energy malnutrition (PEM) is a common condition among patients admitted to hospitals, and it is associated with a worse prognosis and increased mortality. Although several screening systems have been developed, PEM is still poorly recognized, and there is no consensus on which test is more reliable and feasible in clinical practice. Prealbumin (PAB) is a potential useful PEM ...

<span lang="EN-US">Large-scale integration of inverter-based renewables is displacing synchronous machine generation, causing a reduction in the inertia electrical power systems. This reflected an increase rate change frequency (RoCoF). Additionally, variation RoCoF will depend on uncertainty associated with generation non-conventional renewable energy sources. For planning operation syst...

This paper proposes an accurate and efficient probabilistic method for modeling the nonlinear complex uncertainty effects mainly focuses on Electric Vehicle (EV) in Peer-to-Peer (P2P) trading. The proposed captures of input parameters with a low computational burden regardless probability density function (PDF) shape. To this end, each uncertain parameter, multitude random vectors specification...

Using data from extensive vibrational tests of the new aircraft Saab 2000 a combined method for vibration analysis is studied. The method is based on a realization algorithm followed by standard prediction error methods (PEM). We nd that the realization algorithm gives good initial model parameter estimates that can be further improved by the use of PEM. We use the method to get insights into t...

Abstract. Tropospheric vertical structure was analyzed using in situ measurements of 03, CO, CH4, and H20 taken on board the NASA DC-8 aircraft during three Pacific Exploratory Missions (PEMs): PEM-West A, September-October 1991 in the western Pacific; PEM-West B, FebruaryMarch 1994 in the western Pacific; and PEM-Tropics A, September-October 1996 in the central and eastern Pacific. PEM-Tropics...

Fuel cells output power depends on the operating conditions, including cell temperature, oxygen pressure, hydrogen tempureter . In each particular condition, there is only one unique point for a fuel system with maximum output. Thus, tracking (MPPT) controller needed to increase efficiency of PEMFC systems. this paper an efficient method fuzzy logic proposed MPPT proton exchange membrane (PEM) ...

Although culture of Trichomonas vaginalis is more sensitive than wet mounts in the diagnosis of trichomoniasis, the lack of convenience of culture prevents it from being widely used. To improve the acceptability of diagnosis by culture, a plastic envelope method (PEM) was devised. PEM permits both immediate examination and culture in one self-contained system. The medium consists of dry ingredi...

Production efficiency models (PEMs) are based on the theory of light use efficiency (LUE) which states that a relatively constant relationship exists between photosynthetic carbon uptake and radiation receipt at the canopy level. Challenges remain however in the application of the PEM methodology to global net primary productivity (NPP) monitoring. The objectives of this review are as follows: ...