排序方式: 共有9条查询结果,搜索用时 15 毫秒
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Ralf Dunkel Roko Bujas Andre Klein Volker Horndt 《Journal of the Society for Information Display》2005,13(7):569-573
Abstract— It is well known that proper encapsulation is crucial for the lifetime of organic light‐emit‐ting‐diode (OLED) displays. With the development of increasingly better barrier coatings and perimeter seals, it has now become very desirable to be able to precisely measure the rate of water‐vapor and oxygen permeation through barrier coatings and perimeter sealing. This paper demonstrates a new permeation‐measurement method that uses tritium‐containing water (HTO) as a tracer material. The theoretical detection limit of this direct method is 2.4 × 10?8 g/(m2‐day). 相似文献
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We present three approaches to value American continuous-installment options written on assets without dividends or with continuous dividend yield. In an American continuous-installment option, the premium is paid continuously instead of up-front. At or before maturity, the holder may terminate payments by either exercising the option or stopping the option contract. Under the usual assumptions, we are able to construct an instantaneous riskless dynamic hedging portfolio and derive an inhomogeneous Black–Scholes partial differential equation for the initial value of this option. This key result allows us to derive valuation formulas for American continuous-installment options using the integral representation method and consequently to obtain closed-form formulas by approximating the optimal stopping and exercise boundaries as multipiece exponential functions. This process is compared to the finite difference method to solve the inhomogeneous Black–Scholes PDE and a Monte Carlo approach. 相似文献
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Igor Smojver Ivan Katalini Roko Bjelica Dragana Gabri Vid Matii Vilim Molnar Dragan Primorac 《International journal of molecular sciences》2022,23(3)
Application of mesenchymal stem cells (MSC) in regenerative therapeutic procedures is becoming an increasingly important topic in medicine. Since the first isolation of dental tissue-derived MSC, there has been an intense investigation on the characteristics and potentials of these cells in regenerative dentistry. Their multidifferentiation potential, self-renewal capacity, and easy accessibility give them a key role in stem cell-based therapy. So far, several different dental stem cell types have been discovered and their potential usage is found in most of the major dental medicine branches. These cells are also researched in multiple fields of medicine for the treatment of degenerative and inflammatory diseases. In this review, we summarized dental MSC sources and analyzed their treatment modalities with particular emphasis on temporomandibular joint osteoarthritis (TMJ OA). 相似文献
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Mojmir Uranjek Vlatko Bosiljkov Roko Žarnić Violeta Bokan-Bosiljkov 《Materials and Structures》2012,45(6):861-879
The injection of grout into multi-leaf stone masonry walls with a sufficient amount of voids can be an effective technique
for the seismic strengthening of such walls. In order to evaluate the effectiveness of different types of commercial grouts
that fulfilled the adopted criteria, the stone masonry walls of an actual building were strengthened by means of grout injection,
using cement and combined cement–lime grouts. The quality and effectiveness of grout injection technique was assessed by non-destructive
tests (sonic and radar tests), minor destructive tests (surface and in-depth probing and coring, and the double flat jack
test), and destructive test (shear-compressive test), all in situ. Preliminary laboratory tests were also performed on mortar
and stone specimens, on the injection grouts, and on cylinders representing the inner core of the strengthened walls. Finally,
the seismic resistance of the building was evaluated in non-strengthened and strengthened variants (i.e. after grout injection
of the walls with cement or lime–cement grout) by means of non-linear static analysis, using the pushover method. Obtained
results show that shear characteristics of the walls (tensile strength and stiffness) depend significantly on the type and
properties of the injected grout, i.e. on the grout’s ability to achieve a solid bond between the stones and the leaves including
the properties (strength and stiffness) of the grout itself. In the case of the type of masonry under consideration, an adequate
level of seismic resistance can be achieved also by using combined cement–lime grouts, although cement grout can provide higher
seismic resistance. 相似文献
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