نتایج جستجو برای: barrier efficiency
تعداد نتایج: 474823 فیلتر نتایج به سال:
The blood-brain barrier is the major obstacle that prevents diagnostic and therapeutic drugs being delivered to the central nervous systems in order to exert their effects. Specific ligand-receptor binding mediated endocytosis is one of the possible strategies to cross this barrier. A 30-amino-acid peptide (leptin30) derived from an endogenic hormone-leptin is exploited as brain-targeting ligan...
The low level doping of a selective emitter by etch back is an easy and low cost process to obtain a better blue response from a solar cell. This work suggests that the contact resistance of the selective emitter can be controlled by wet etching with the commercial acid barrier paste that is commonly applied in screen printing. Wet etching conditions such as acid barrier curing time, etchant co...
Although the approach using non-thermal plasma (NTP) for deNOx has been studied for over 15 years, how to achieve higher removal efficiency with lower cost is still a barrier for its industrial application. In order to investigate the impact of the argon additive on electron density, energy and nitric oxide reduction process in plasma, the spectrum of the dielectric barrier discharge at atmosph...
There are analytic methods for designing protective barriers however, they lack sufficient efficiency and considering the NCRP (National Council on Radiation Protection and measurements) reports, designing mechanical protective barrier in order to protect the initial x-ray radiation and absorption of the ray quality of such radiation is different. In this study, computer software was designed t...
Ultrafast optical spectroscopy was utilized to investigate charge transfer dynamics across organic semiconductor tetracene/C60 interfaces in the presence of a LiF barrier layer. Photoinduced absorption spectra in the 1.6−2.3 eV range reveal a strong effect of the intermediate LiF barrier layer on dynamics of the charge transfer excitons (CTE) creation and recombination. Increasing thickness of ...
In this paper, we propose a primal interior-point method for large sparse generalized minimax optimization. After a short introduction, where the problem is stated, we introduce the basic equations of the Newton method applied to the KKT conditions and propose a primal interior-point method. Next we describe the basic algorithm and give more details concerning its implementation covering numeri...
Guided bone regeneration is a new concept of large bone defect therapy, which employs a barrier membrane to afford a protected room for osteogenesis and prevent the invasion of fibroblasts. In this study, we developed a novel barrier membrane made from lyophilized multilayered acellular human amnion membranes (AHAM). After decellularization, the AHAM preserved the structural and biomechanical i...
multiple sclerosis (ms) is an inflammatory disorder, in which neurons become demyelinated. to date, its etiology has remained unknown. nevertheless, certain features are inspected to provoke ms. for instance, improper function of immune cells is widely believed to be the basis of such disorder. in this concept, ms is stated as an autoimmune disease, which was asserted by major of studies, as cd...
background: family planning is a lifestyle that is selected voluntarily and is based on the knowledge, attitude and responsible decision making by couples in order to promote the health and welfare of the family and the advancement of the society. in this regard, family planning counseling plays an important role in making informed decisions if used properly and in a responsible way. detection ...
abstract the present study deals with a comparison between reactive and pre-emptive focus-on-form in terms of application and efficiency. it was conducted in an intermediate english class in shahroud. 15 male learners participated in this research and their age ranged from 18 to 25. a course book, new interchange 3, and a complementary book were used. every session the learners gave lectures o...
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