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Dijkstra once wrote that computer science is no more about
computers than astronomy is about telescopes. Despite the many
incredible advances in c- puter science from times that predate
practical mechanical computing, there is still a myriad of
fundamental questions in understanding the interface between
computers and the rest of the world. Why is it still hard to
mechanize many tasks that seem to be fundamentally routine, even as
we see ever-increasing - pacity for raw mechanical computing? The
disciplined study of domain-speci?c languages (DSLs) is an emerging
area in computer science, and is one which has the potential to
revolutionize the ?eld, and bring us closer to answering this
question. DSLs are formalisms that have four general
characteristics. - They relate to a well-de?ned domain of
discourse, be it controlling tra?c lights or space ships. - They
have well-de?ned notation, such as the ones that exist for
prescribing music, dance routines, or strategy in a football game.
- The informal or intuitive meaning of the notation is clear. This
can easily be overlooked, especially since intuitive meaning can be
expressed by many di?erent notations that may be received very
di?erently by users. - The formal meaning is clear and
mechanizable, as is, hopefully, the case for the instructions we
give to our bank or to a merchant online.
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Spirulina platensis
Helal Moussa, Mohamed Taha, Eldessoky Dessoky
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R1,189
Discovery Miles 11 890
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Out of stock
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The production of phosphoric acid by sulfuric acid from high iron
content phosphate rocks such as (Abu-Tartur phosphate rocks) has
many disadvantages as low quality of produced acid and huge amounts
of calcium sulfate. Also traditional process for production of
dicalcium phosphate from wet phosphoric acid takes many steps.
According to these problems, this work concerned to produce feed
grade DCP by direct acidulation of Abu-Tartur phosphate rock with
HCl in order to decrease production cost and produce relatively
pure phosphoric acid. The leaching of phosphate ore by using dilute
HCl was achieved in order to get maximum P2O5 leaching relative to
minimum impurities. Kinetic analysis of the data indicates that the
leaching process is ash layer diffusion controlled process. The
production of DCP from direct acidulate phosphate rock was achieved
by precipitating P2O5 by CaCO3. This process has many advantages
over the conventional H2SO4 as: decrease production cost. In
addition, the production of phosphoric acid from the produced DCP
overcomes the traditional production problems and the produced
phosphoric acid is more pure than the phosphoric acid produced
directly by phosphate ore.
Zadeh (1965), introduced the basic idea of a fuzzy set as an
extension of classical set theory. In 1968, Chang was the first to
introduce the concept of a fuzzy topology. Kubiak and Sostak (1985)
introduced the fundamental concept of a fuzzy topological
structure, as an extension of both crisp topology and fuzzy
topology, in the sense that not only the objects are fuzzified, but
also the axiomatics. Also, Sostak gave some rules and showed how
such an extension can be realized. The purpose of this book is to
introduce and study some new definitions of fuzzy sets, continuous
mappings and separation axioms On Fuzzy Topological Spaces In
Sostak's Sence.
E. coli serotype O157: H7 is a rare variety of E. coli, a normal
inhabitant of the intestines of all animals, including humans. The
pathogen produces large quantities of one or more related potent
toxins, called Shiga toxins, which cause severe damage to the
lining of the intestine and to other target organs, such as the
kidneys. E. coli O157: H7 was first recognized as a cause of
illness in 1982 during an outbreak of severe bloody diarrhea that
was later traced to contaminated hamburgers. It has since been
implicated in a number of outbreaks of intestinal distress. The
most severe outcome in the general population is typically
hemorrhagic colitis, a prominent symptom of which is bloody
diarrhea. Some victims, particularly the very young, may develop
hemolytic uremic syndrome. Eating meat, particularly ground beef,
that has not been cooked sufficiently to kill E. coli O157: H7 is
thought to be the primary cause of infection. Among other known
sources of infection are consumption of contaminated sprouts,
lettuce, salami, and unpasteurized milk and fruit juice; swimming
in or drinking contaminated water; and contact with the stools of
infected animals or people
Space- Time Block Coding (STBC) are used to improve the
transmission reliably and spectral efficiency of MIMO systems. The
cooperative communication techniques can avoid the difficulties of
implementing actual antennas array by converting the single-input
single-output (SISO) system into a virtual multiple-input
multiple-output (MIMO) system. When STBC applied to cooperative
diversity the system termed as Distributed Space Time Block Code
(D-STBC). Most of the existing research assumes perfect
synchronization among cooperative users in D-STBC. Unfortunately,
perfect synchronization is almost impossible to be achieved.
Therefore, most of the designed space-time codes are no longer
valid. There are different research efforts to overcome this
problem; most of which has high decoding complexity. In this
research, two low decoding complexity schemes for imperfect
synchronized D-STBC have been proposed. The first scheme is based
on the principle of parallel interference cancellation (PIC),
whereas the other is based on successive interference cancellation
(SIC). These approaches have been proved to be a very effective in
suppressing the impact of imperfect synchronization.
Obesity is a condition in which excess body fat may put a person at
the risk of developing insulin resistance and type 2 diabetes
mellitus. With the growing prevalence of obesity, scientific
interest in the biology of adipose tissue [which is the body's
largest reserve of fuel] has been extended to the secretory
products of adipocytes. In recent years, a line of evidence has
demonstrated a much more complex function of adipose tissue, as an
endocrine organ that releases hormones into the blood stream to
take part in their potential implication in insulin resistance,
obesity and diabetes. These adipocytes' specific proteins include
adiponectin, leptin and resistin. This study aimed to assess the
effect of modest weight loss on serum adipocytokines' changes and
hence discover their role as a link between obesity and insulin
resistance diabetes.
A translation from the Sudanese of Taha's major work in which he
outlines the main features of his teachings. Mahmoud Mohamed Taha
had long been known for his radical reinterpretation of Islam. His
reputation, along with his vigorous opposition to the Islamization
program, ultimately led to his demise
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