Due to the XML’s flexibility and semi-structured nature, complications arise when trying to transplant data from one XML to another. Researchers have made great strides in solving the problem of integrating homogenous XML. But there are very few specifically addressing the problem of integrating heterogenous documents. We introduce XSD Matcher, a system for automatically mapping a collection of...

To modulate the rate of hydration calcium sulfate hemihydrate (HH) to dihydrate for industrial applications, additives (both accelerants and retardants) are added HH. Here we explore in detail kinetics mechanism HH presence accelerators K 2 SO 4 or ZnSO , also when a retardant (citric acid tartaric acid) is added. Retardants tend lower maximum temperature reaction increase time needed reach 50%...

Knoevenagel condensation between barbituric acid and aldehyde was investigated in the presence of sulfonic acid functionalized nanoporous silica (SBA-Pr-SO3H) and resulted in the formation of arylidene and bis-arylidene barbiturates. Excellent yields and short reaction times are related to the high efficiency of SBA-Pr-SO3H that the reactions take place easily in its nano-pores. SBA-Pr-SO3H as ...

Knoevenagel condensation between barbituric acid and aldehyde was investigated in the presence of sulfonic acid functionalized nanoporous silica (SBA-Pr-SO3H) and resulted in the formation of arylidene and bis-arylidene barbiturates. Excellent yields and short reaction times are related to the high efficiency of SBA-Pr-SO3H that the reactions take place easily in its nano-pores. SBA-Pr-SO3H as ...

platinum extraction from different secondary sources has been experimentally tested by many researchers. in this article, dissolution of platinum in aqua-regia solution from two types of spent catalysts (reforming and nitric acid production) was kinetically studied. a variety of kinetic models for heterogeneous solid-liquid reactions, including homogeneous diffusion model, shrinking core model,...

Recently, a novel technique called coded cache have been proposed to facilitate the wireless content distribution. Assuming the users have the identical cache size, prior works have described the fundamental performance limits of such scheme. However, when heterogenous user cache sizes is taken into account, there remains open questions regarding the performance of the cache. In this work, for ...

Invasive mole also known as chorioadenoma destruens comprises about 15 % of all gestational trophoblastic neoplasia [1]. It is a trophoblastic tumor characterized by myometrial invasion by direct extension or through venous channels. The most common presenting symptom is vaginal bleeding (97 %) [2]. The diagnosis is usually suggested after a hydatidiform mole is removed and bhCG remains elevate...

Although essential tremor (ET) has been well characterized since 1887, there is still considerable controversy about the definition of ET, and there is no agreement among the experts as to whether ET is a symptom, a syndrome, or a specific disease entity. Some experts, including my esteemed colleague, Dr. Elble, have concluded that ET “may not be a single entity.” As I agree with this view, the...

Electron Microscope is popular and powerful techniques used to characterize heterogeneous catalysts. In heterogeneous catalysis, frequently used catalysts are metal particles supported on an oxidic material. The size of the metal particles plays a crucial role for the catalyst efficiency, and the determination of size distribution is one of the main tasks of electron microscopy in catalysis. Th...