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Latest Published Papers

A Mesh-Wire Cuvette for Aqueous Sample Analysis in UV-Vis and Far UV Spectroscopy

Tarek R. Farhat, Hasan El Rifai, Rana Jisr, Faith Tharp, Katie Pennington

Advances in Analytical Chemistry, 2024, 13(1), pp. 1-6

DOI: 10.5923/j.aac.20241301.01

Open Access
The design and characterization of a new type of cuvette for UV-Vis spectroscopy and Far UV spectroscopy are presented in this paper. The Mesh-Wire Cuvette MWC is a sample cell that accommodates a sample of aqueous nature for instrumental analysis. The MWC is a modified conventional plastic cuvette ...

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6467 Views  168 Downloads

About Dynamic Fractal Space

A. Bakhtiari, T. Berberashvili, P. Kervalishvili

American Journal of Condensed Matter Physics, 2024, 13(1), pp. 1-8

DOI: 10.5923/j.ajcmp.20241301.01

Open Access
Today Regarding to the matter structure as very small size particles arrangement, their dimension change means space manipulation. There are different methods of mathematical physics that try to explain space in different orientations and physicists try to use which is suitable in their specific ...

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2059 Views  144 Downloads

Biodiesel Synthesis from Vegetable Oils Using a Recyclable Heterogeneous Catalyst: Employing Active Learning to Implement Education for Sustainable Development

Omar A. El Seoud, Nicolas Keppeler, Narciso Rodrigo S. Vagula

Journal of Laboratory Chemical Education, 2024, 12(1), pp. 1-14

DOI: 10.5923/j.jlce.20241201.01

Open Access
We report here on a project regarding the synthesis and properties of biodiesel (BD) from two Brazilian vegetable oils, babassu- (BO), cottonseed oil (CSO), and bioethanol (EtOH). The project was given to our chemistry major students as an introduction to Education for Sustainable Development (ESD). ...

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755 Views  227 Downloads

Optical and Electrical Characterization of SnO2:Ga and Sb-co-doped SnO2:Ga Thin Films Prepared by Sol-Gel Dip-Coating Method

Sally Kemuma Gichana, David M. Mulati, Timonah N. Soitah

American Journal of Materials Science, 2024, 14(1), pp. 1-11

DOI: 10.5923/j.materials.20241401.01

Open Access
P-type Gallium doped tin oxide and Antimony co-doped Gallium-tin oxide thin films have been prepared on blue plus microscope glass substrates using the sol-gel dip-coating method. In this paper, Optical and electrical properties of the prepared thin films are presented. The obtained transmittance ...

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438 Views  147 Downloads

The Relationship Between Body Image Inflexibility and Female Collegiate Athletes Strength and Conditioning Habits

Braden Goimarac, Marcus M. Lawrence, Mark DeBeliso

International Journal of Sports Science, 2024, 14(1), pp. 5-12

DOI: 10.5923/j.sports.20241401.02

Open Access
Body image negativity affects several populations including female athletes. A type of body image negativity is body image inflexibility: the inability or unwillingness to experience negative appearance-related thoughts and emotions. Purpose: The purpose of this study is to investigate the ...

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1528 Views  174 Downloads

Comparing Regular Random Forest Model with Weighted Random Forest Model for Classification Problem

Sanjib Ghosh

International Journal of Statistics and Applications, 2024, 14(1), pp. 7-12

DOI: 10.5923/j.statistics.20241401.02

Open Access
Several studies have demonstrated that effectively combining machine learning models can improve the individual predictions made by the base models. Random forests allow for the selection of a random number of features while bagging increases diversity by sampling with replacement and generating ...

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627 Views  151 Downloads

Estimation of the Dynamics of Development Indicators of the Trachea and Lung Bronches in Babies under One Year of Birth

Ravshan K. Sultonov, Dilnoz B. Buriyeva, Xusnitdin B. Xujanov, Alisher R. Babamuratov

American Journal of Medicine and Medical Sciences, 2024, 14(3), pp. 548-555

DOI: 10.5923/j.ajmms.20241403.03

Open Access
In this article, the development dynamics and structure of tissue structures of the trachea and bronchial walls of infants under one year of age have been investigated. It has been proven that all the layers of the tracheal wall are not well developed at the age of one month of the babies, that the ...

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414 Views  145 Downloads

Most Cited Papers

A Review of Leadership Theories, Principles and Styles and Their Relevance to Educational Management

Rose Ngozi Amanchukwu, Gloria Jones Stanley, Nwachukwu Prince Ololube

Management, 2015, 5(1), pp. 6-14

DOI: 10.5923/

Open Access

This study was motivated by the premise that no nation grows further than the quality of its educational leaders. The purpose of this theoretical debate is to examine the wider context of leadership and its effectiveness towards improving school management. This academic evaluation examines recent theoretical developments in the study of educational leadership in school management. It begins with a concise overview of the meaning and concept of leadership in terms of research, theory, and practice. This is followed by an examination of the theories of leadership, principles and styles of leadership. Each section ends with an identification of contemporary issues and possible means of amelioration. This article concludes that success is certain if the application of the leadership styles, principles and methods is properly and fully applied in school management because quality educational leadership tradition offers great opportunity to further refine educational leadership and management policies and practices by accepting and utilizing the basic principles and styles of educational leadership.

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Internet of Things: Ubiquitous Home Control and Monitoring System using Android based Smart Phone

Rajeev Piyare

International Journal of Internet of Things, 2013, 2(1), pp. 5-11

DOI: 10.5923/j.ijit.20130201.02

Open Access

This paper presents a low cost and flexible home control and monitoring system using an embedded micro-web server, with IP connectivity for accessing and controlling devices and appliances remotely using Android based Smart phone app. The proposed system does not require a dedicated server PC with respect to similar systems and offers a novel communication protocol to monitor and control the home environment with more than just the switching functionality. To demonstrate the feasibility and effectiveness of this system, devices such as light switches, power plug, temperature sensor and current sensor have been integrated with the proposed home control system.

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Aqueous Two Phase Systems for the Recovery of Biomolecules – A Review

Selvaraj Raja, Vytla Ramachandra Murty, Varadavenkatesan Thivaharan, Vinayagam Rajasekar, Vinayagam Ramesh

Science and Technology, 2011, 1(1), pp. 7-16

DOI: 10.5923/j.scit.20110101.02

Open Access

Aqueous two phase system (ATPS) is a liquid – liquid extraction method which employs two aqueous phases having applications in the field of biotechnology for the separation and purification of biological materials such as proteins, enzymes, nucleic acids, virus, antibodies and cell organelles. This review discusses the basic principles of ATPS, the factors affecting partitioning, optimization by design of experiments and the recent applications like extractive fermentation, membrane supported liquid – liquid extraction and aqueous two phase floatation. A comparative study between ATPS and other conventional methods is also discussed. The emphasis is given to PEG/salt two-phase systems because of the low cost of the system.

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