in this paper, the performance evaluation of a two-way hybrid photovoltaic/thermal (pv/t) solar collector was analytically and experimentally carried out. mathematical expressions for operating parameters in glass to glass and glass to tedlar pv/t solar collectors were developed and experimentally validated by a glass to tedlar pv/t solar collector system. also the influence of air flow rate on...

background: myeloproliferative neoplasms (mpns) are clonal malignant diseases that represent a group of conditions including polycythemia vera (pv), essential thrombocythemia (et) and primary myelofibrosis (pmf). the aim of this study was to evaluate possible correlations between jak2v617f allele burden and clinicohematologic characteristics in iranian patients with mpns. we also aimed at deter...

Shading reduces the power output of a photovoltaic (PV) system. The design engineering of PV systems requires modeling and evaluating shading losses. Some PV systems are affected by complex shading scenes whose resulting PV energy losses are very difficult to evaluate with current modeling tools. Several specialized PV design and simulation software include the possibility to evaluate shading l...

BACKGROUND A qualitative highly predictive urinary test for polyomavirus nephropathy (PVN) is the PV-Haufen test. This article evaluates whether a quantitative PV-Haufen analysis, that is, the number of PV-Haufen shed per milliliter urine, predicts PVN disease grades and the severity of intrarenal PV replication. METHODS Polyomavirus-Haufen were counted in 40 urine samples from patients with ...

The flaccid paralyses characteristic of poliomyelitis are a direct consequence of the infection of motor neurons with poliovirus (PV). In PV-infected mice, motor neurons die by apoptosis. However, the mechanisms by which PV induces cell death in neurons remain unclear. Analyses of the apoptotic pathways induced by PV infection in several cell lines have demonstrated that mitochondria play a key...

• Basic components of Solar PV system and its merits and demerits. • Involvement of power electronic devices in Solar PV components. • MATLAB/SIMULINK model of different control strategies of power conditioning unit. • Importance of MATLAB/SIMULINK model in improving the efficiency of the overall solar PV system. • Characteristics of Solar PV panel and its MATLAB/SIMULINK model. • Characteristi...

• Basic components of Solar PV system and its merits and demerits. • Involvement of power electronic devices in Solar PV components. • MATLAB/SIMULINK model of different control strategies of power conditioning unit. • Importance of MATLAB/SIMULINK model in improving the efficiency of the overall solar PV system. • Characteristics of Solar PV panel and its MATLAB/SIMULINK model. • Characteristi...

The strength of the acoustic startle response (ASR) to short bursts of broadband noise or tone pips (4, 8 and 16 kHz) and the prepulse inhibition (PPI) of the ASR elicited by prepulse tones (4, 8 and 16 kHz) were measured in parvalbumin-deficient (PV-/-) mice and in age-matched PV+/+ mice as controls. Hearing thresholds as determined from recordings of auditory brainstem responses were found to...

BACKGROUND Electrical disconnection of the myocardial extensions into arrhythmogenic pulmonary veins (PVs) is recognized as a curative technique for paroxysmal atrial fibrillation (AF). However, the presence of electrical connections between the PVs, which may make achievement of PV disconnection difficult, has not been systematically evaluated. METHODS AND RESULTS Forty-nine consecutive pati...

Starting-up of photovoltaic (PV) inverters involves pre-charging of the input dc bus capacitance. Ideally, direct precharge of this capacitance from the PV modules is possible as the PV modules are current limited. Practically, the parasitic elements of the system such as the PV module capacitance, effective wire inductance and resistance determine the startup transient. The start-up transient ...