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السجلات المعروضة 411 -- 420 من 654
Thermal properties of phase-change materials based on high-density polyethylene filled with micro-encapsulated paraffin wax for thermal energy storage
(
Elsevier Ltd
, 2015 , Article)
Microcapsules consisting of paraffin wax cores with a melting point of approximately 42 °C and a melamine-formaldehyde resin shell were synthesized using in situ polymerization. These microcapsules have a uniform distribution ...
Unconventional experimental technologies used for phase change materials (PCM) characterization: Part 2 - Morphological and structural characterization, physico-chemical stability and mechanical properties
(
Elsevier Ltd
, 2015 , Article)
Due to the high interest of appropriate characterization of PCM and hybrid PCM composites, different research centres and universities are using several material characterization techniques not commonly used with PCM, to ...
Positive influence of expanded graphite on the physical behavior of phase change materials based on linear low-density polyethylene and paraffin wax
(
Elsevier B.V.
, 2015 , Article)
The preparation of Phase Change Materials (PCM) with improved thermal conductivity, based on linear low-density polyethylene (LLDPE), paraffin wax with a melting point of approximately 42 °C and expanded graphite as well ...
Implementation of iterative learning control based deadtime compensation for PWM inverters
(
IEEE
, 2015 , Conference Paper)
Deadtime effects in PWM inverters are nonlinear and depend on the switching frequency of the inverters and the types of power devices, snubber circuits, and loads. Several deadtime compensation methods were proposed in the ...
ANN-based extraction approach of PV cell equivalent circuit parameters
(
IEEE
, 2015 , Conference Paper)
In most practical cases, a PV array is constructed from a combination of standard PV units (solar cells or panels) connected in series and/or in parallel to obtain the desired power, voltage and current ratings. However, ...
Space vector pulse width modulation techniques for a five-phase impedeance source and quazi impedeance source inverters
(
IEEE
, 2015 , Conference Paper)
Impedance source inverter (ZSI) and its variant quasi impedance source inverter (qZSI) are single stage inverters that transform dc to ac and boost the source voltage at the same time. These topologies have attracted great ...
The electrolytic treatment of synthetic urine using DSA electrodes
(
Elsevier
, 2015 , Article)
In this work, the electrochemical treatment of synthetic urine by anodic oxidation using dimensionally stable anode (DSA) was studied. The influence of current density and temperature on the kinetics and efficiency of ...
Pharmacists' attitudes towards pharmacy practice research: A review
(
Springer International Publishing
, 2015 , Book chapter)
Despite an increase in pharmacy practice research, literature addressing the attitudes and involvement of pharmacists is limited. Our own observations as pharmacy practitioners and educators lead us to believe that, so ...
Pharmacists' involvement in and attitudes toward pharmacy practice research: A systematic review of the literature
(
Elsevier
, 2015 , Article Review)
Background: The role of pharmacists in health care has evolved toward patient-centered care. Pharmacy practice-based research is essential to the advancement of practice; however, literature addressing attitudes and ...
Clinical pharmacokinetics: perceptions of hospital pharmacists in Qatar about how it was taught and how it is applied
(
Kluwer Academic Publishers
, 2015 , Article)
Background The application of clinical pharmacokinetics (PK) is essential when providing pharmaceutical care. Appropriate application of PK monitoring results in improved patient outcomes including decreased mortality, ...