3,206 Works

Phenolic Compounds In Four Astragalus Species

Ilina N. Krasteva
Aim: To investigate the phenolic compounds in four Astragalus species (A. hamosus, A.
ponticus, A. corniculatus and A. cicer) distributed in Bulgarian flora.
Study Design: Using LC-MS, HPLC, UV, NMR and HRESIMS for identification of the
compounds.
Place and Duration of Study: Department of Pharmacognosy, Faculty of Pharmacy,
Medical University of Sofia, Bulgaria, between May 2009 and December 2012.
Methodology: LC/MS/MS analysis was performed using Agilent 1100 and API 365 tripequadrupole
mass spectrometer. HPLC was...

Persistent Bactericidal Action By A Silver Disinfectant On Surfaces Of Hospital Furniture

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Aims: In hospitals, surfaces are often colonized by potentially pathogenic micro organisms
which can remain alive for long periods of time, thus playing a major role in hospitalacquired
infections. One way to overcome this drawback could be to use disinfectants with
long-term action. Recent studies have shown that not only do disinfectants containing silver
present an immediate effect, reducing the surface bacterial load, but that this action also
appears persistent in time. This work assesses...

Combinatorial Geometry With Applications To Field Theory

Linfan Mao
Accompanied with humanity into the 21st century, a highlight trend for developing
a science is its overlap and hybrid, and harmoniously with other sciences, which
enables one to handle complex systems in the WORLD. This is also for developing mathematics. As a powerful tool for dealing with relations among objectives, combinatorics, including combinatorial theory and graph theory mushroomed in last century. Its related with algebra, probability theory and geometry has made it to an important...

About A New Smarandache-Type Sequence

Csaba Biro
The computers can operate with 256 characters and all of them has an ASCII code which is an integer from 0 to 255. If you press ALT key and you type a number, the character of the number will appear. But if you type a number that is greater than 255, the computer will calculate the remainder after division by 256, and the corresponding character will appear. "Can you show each character by pressing the...

On The Number Of Smarandache Zero-Divisors And Smarandache Weak Zero-Divisors In Loop Rings

W.B. Vasantha & K. Moon Chetry
Finding the number of Smarandache zero divisors (S-zero divisors) and Smarandache weak zero divisors (S-weak zero divisors) for the loop rings.

A Variation Of Decomposition Under A Length Constraint

Ismail Sahul Hamid & Mayamma Joseph
Introducing and initiating a study of a new variation of decomposition namely equiparity induced path decomposition of a graph which is defined to be a decomposition in which all the members are induced paths having same parity.

Відкритий Доступ До Наукової Інформації: Від Ідеї До Руху

Alina Synytska
Від ідеї до руху

Embedding N-Dimensional Crossed Hypercube Into Pancake Graphs

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Among Cayley graphs on the symmetric group, the pancake graph is one as a viable
interconnection scheme for parallel computers, which has been examined by a number of
researchers. The pancake was proposed as alternatives to the hypercube for interconnecting
processors in parallel computers. Some good and attractive properties of this interconnection
network include: vertex symmetry, small degree, a sub-logarithmic diameter, extendability, and
high connectivity (robustness), easy routing, and regularity of topology, fault tolerance,
extensibility...

Homework: An Interface Between Home And School. Is It A Myth Or A Reality In Rural Zimbabwean Primary Schools?

Webster Kadodo
This research examines the functionality of homework in rural Zimbabwean primary
schools. The research acknowledges that, whereas homework is intended to extend the
learning from school to home for the benefit of learners, in reality, is this happening in rural
schools where a number of parents and guardians are either lowly educated or
economically disempowered? The intended collaborative effort between teachers and
parents does not seem to be working out well in some of the...

Cognitive Entry Characteristics And Semester Examination Scores As Correlates Of College Students’ Achievement In Mathematics

James Ajogbeje Oke &
Aims: This study was designed (i) to investigate the relationship between cognitive entry
characteristics (CEC), semester examination scores and student’s achievement in
mathematics and (ii) to find out the predictive strength of CEC and semester examination
scores on college students’ achievement in mathematics.
Study Design: The study employed ex-post facto design.
Place and Duration of Study: College of Education, Ikere-Ekiti, Ekiti State, Nigeria
between October 2012 and January 2013.
Methodology: The sample, 415 full-time students...

The Fall And Rise Of Medical Students’ Attitudes To Communication Skills Learning In Ireland: A Longitudinal Approach

Morris M., &
Many studies have explored attitudes to communication skills learning before and after a
teaching intervention but there remains a dearth of published longitudinal studies. An area
currently unexplored is medical student’s attitudes to communication skills teaching and
learning over the entirety of the undergraduate programme. A longitudinal approach was
utilized in this study involving all medical students (n= 128) entering a Medicine Under
Graduate Degree Programme in 2007 in a Dublin Medical School. Participants completed...

Education For All In Low-Income Countries: A Crucial Role For Cognitive Scientists

Donor funding has helped enroll in school most children of low-income countries. However,
students get little schooling and few opportunities to encode and consolidate information.
Many fail to learn and automatize the small units needed for more complex skills, such as
reading. As a result, many children remain illiterate and drop out in the early primary
grades. However, donors and governments often focus on the socioeconomic difficulties of
the very poor and have limited insights...

On 15-Th Smarandache'S Problem

Mladen Vassilev
Studying the 15-th Smarandache's problem.

On The 83-Th Problem Of F. Smarandache

Gao Nan
Studying the properties of a Smarandache sequence, and giving an interesting asymptotic formula.

The 97-Th Problem Of F. Smarandache

Yi Yuan
The main purpose of this paper is using the analytic method to study the n-ary sieve sequence, and solved one conjecture about this sequence.

About An Equation

Mihaly Bencze
There exists infinitely many n belongs to N such that S(n) = S(n - S(n)), where S is the Smarandache function.

Two Hundred Conjectures And One Hundred And Fifty Open Problems On Fermat Pseudoprimes (Collected Papers)

Marius Coman
30 articles posted on VIXRA about Poulet numbers (Fermat pseudoprimes to base 2), Carmichael numbers (absolute Fermat pseudoprimes), Fermat pseudoprimes to base 3 and other relative Fermat pseudoprimes, also 30 sequences of such numbers posted on OEIS and 150 open problems regarding, of course, these numbers.

A Unifying Field In Logics: Neutrosophic Logic. Neutrosophy, Neutrosophic Set, Neutrosophic Probability And Statistics

F. SMARANDACHE
In 1960s Abraham Robinson has developed the non-standard analysis, a formalization of analysis and a branch of mathematical logic, which rigorously defines the infinitesimals.

Enciclopedia Matematică A Claselor De Numere Întregi

Marius Coman
Numerele naturale au fascinat dintotdeauna omenirea, ce le-a considerat, pe bună dreptate, ca fiind mai mult decât mijloace de a studia cantităţile, le-a considerat entităţi având o personalitate proprie. Mistica tuturor popoarelor abundă de proprietăţi supranaturale atribuite numerelor. Într-adevăr, pare că, pe măsură ce le cercetezi mai adânc, descoperi că au „consistenţă”, că, departe de a fi o creaţie conceptuală a omului, un simplu instrument la îndemâna sa, se conduc de fapt după legităţi proprii,...

Mainly Natural Numbers

Henry Ibstedt
A few elementary studies on Smarandache sequences and other number problems.

International Journal Of Mathematical Combinatorics, Vol.1

Linfan (Editor-in-Chief) Mao
The International J.Mathematical Combinatorics (ISSN 1937-1055) is a fully refereed international journal, sponsored by the MADIS of Chinese Academy of Sciences and published in USA quarterly comprising 460 pages approx. per volume, which publishes original research papers and survey articles in all aspects of Smarandache multi-spaces, Smarandache geometries, mathematical combinatorics, non-euclidean geometry and topology and their applications to other sciences.

International Journal Of Mathematical Combinatorics, Vol.4

Linfan (Editor-in-Chief) Mao
The International J.Mathematical Combinatorics (ISSN 1937-1055) is a fully refereed international journal, sponsored by the MADIS of Chinese Academy of Sciences and published in USA quarterly comprising 460 pages approx. per volume, which publishes original research papers and survey articles in all aspects of Smarandache multi-spaces, Smarandache geometries, mathematical combinatorics, non-euclidean geometry and topology and their applications to other sciences.

International Journal Of Mathematical Combinatorics, Vol.7

Linfan (Editor-in-Chief) Mao
The International J.Mathematical Combinatorics (ISSN 1937-1055) is a fully refereed international journal, sponsored by the MADIS of Chinese Academy of Sciences and published in USA quarterly comprising 460 pages approx. per volume, which publishes original research papers and survey articles in all aspects of Smarandache multi-spaces, Smarandache geometries, mathematical combinatorics, non-euclidean geometry and topology and their applications to other sciences.

International Journal Of Mathematical Combinatorics, Vol.6A

Linfan (Editor-in-Chief) Mao
The International J.Mathematical Combinatorics (ISSN 1937-1055) is a fully refereed international journal, sponsored by the MADIS of Chinese Academy of Sciences and published in USA quarterly comprising 460 pages approx. per volume, which publishes original research papers and survey articles in all aspects of Smarandache multi-spaces, Smarandache geometries, mathematical combinatorics, non-euclidean geometry and topology and their applications to other sciences.

International Journal Of Mathematical Combinatorics, Vol.7A

Linfan (Editor-in-Chief) Mao
The International J.Mathematical Combinatorics (ISSN 1937-1055) is a fully refereed international journal, sponsored by the MADIS of Chinese Academy of Sciences and published in USA quarterly comprising 460 pages approx. per volume, which publishes original research papers and survey articles in all aspects of Smarandache multi-spaces, Smarandache geometries, mathematical combinatorics, non-euclidean geometry and topology and their applications to other sciences.

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