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Numbers

133

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10K +

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177

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Latest Published Papers

Synthesis, Structure Analysis and Antibacterial Activity of Zn(II) and Co(III) Complexes

Amnah Saud Altamimi, Salma A. Al-Zahrani, Violeta Jevtovic

American Journal of Chemistry, 2021, 11(3), pp. 43-48

DOI: 10.5923/j.chemistry.20211103.01

Open Access
This paper presents the synthesis, structure and biological activity of two new complexes Zn (II) and Co (III) with the pyridoxal-thiosemicarbazone as ligand. Complexes are with molecular formula [Zn (PLTSC) (H2O)2]SO4. H2O and [Co ...

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1827 Views  214 Downloads

Investigation of the Mechanical Behavior of the Oil Shale Ash Filled Chlorinated Polyvinyl Chloride Composite Material

Heba Al-Khlaifat, Raid Banat

International Journal of Composite Materials, 2021, 11(1), pp. 13-21

DOI: 10.5923/j.cmaterials.20211101.03

Open Access
The effect of the oil shale ash (OSA) addition on the impact, tensile, flexural, water uptake, and morphological behavior of the chlorinated polyvinylchloride (CPVC) was investigated. Adding OSA filler to CPVC matrix yielded a greater impact strength of 498 kJ/m2. While the tensile stress ...

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1006 Views  139 Downloads

Survival Analysis and Predictors of Time to First Birth After Marriage in Jordan

Noora Said Salim Al Shanfari, M. Mazharul Islam

International Journal of Statistics and Applications, 2021, 11(3), pp. 51-60

DOI: 10.5923/j.statistics.20211103.01

Open Access
The Waiting time-to-first birth is an important indicator of the reproductive behavior of married women. However, data on waiting time to first birth involve censoring and follow a skewed distribution, and thus need survival analysis techniques to analyze such data. The aim of this study was to ...

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1023 Views  106 Downloads

Synthesis, Structure Analysis and Antibacterial Activity of Zn(II) and Co(III) Complexes

Amnah Saud Altamimi, Salma A. Al-Zahrani, Violeta Jevtovic

American Journal of Chemistry, 2021, 11(3), pp. 43-48

DOI: 10.5923/j.chemistry.20211103.01

Open Access
This paper presents the synthesis, structure and biological activity of two new complexes Zn (II) and Co (III) with the pyridoxal-thiosemicarbazone as ligand. Complexes are with molecular formula [Zn (PLTSC) (H2O)2]SO4. H2O and [Co ...

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1827 Views  214 Downloads

Mapping and Monitoring Invasive Weeds in the Savannah Grasslands of Western Highlands in Cameroon

Mairomi H. Wirngo, Moupou Moise, Stephen K. Ndzeidze

International Journal of Ecosystem, 2021, 11(1), pp. 17-29

DOI: 10.5923/j.ije.20211101.03

Open Access
Rangelands in the Western highlands has notably witnessed change in vegetation cover and vegetation composition largely accounted for by increasing growth of invasive weeds in grasslands. Dominant native grass suitable for livestock grazing are Hyparrhenias and Sporobolus. Very noticeable invasive ...

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1742 Views  172 Downloads

Impact of BIM-based Quantity Take off for Accuracy of Cost Estimation

Sudersan Ambalam Vassen

International Journal of Construction Engineering and Management , 2021, 10(3), pp. 55-69

DOI: 10.5923/j.ijcem.20211003.01

Open Access
In every construction project, cost estimation is one of the most crucial aspects that is critical to the project's success. To achieve a proper estimate, price accuracy is fundamental. Building Information Modeling (BIM) is a distinguishing result of the growth of modern information technology in ...

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1839 Views  224 Downloads

Numerical Analysis of Ceramic Mosaic Armor Subjected to Ballistic Impact

Guodong Guo, Shah Alam, Larry D. Peel

International Journal of Composite Materials, 2021, 11(1), pp. 5-12

DOI: 10.5923/j.cmaterials.20211101.02

Open Access
Ceramic mosaics have been used in lightweight armor systems to gain additional multi-hit capacity. However, the tile-to-tile interfaces in ceramic mosaics are inherently vulnerable and thus require special attention. In this research, we present finite element analysis of bilayer armor systems that ...

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1730 Views  169 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/j.mm.20150501.02

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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420
Citations

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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319
Citations

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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108
Citations

Latest Special Issue - Call for Papers

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The following general guidelines may help you in preparing and editing the special issue and you can also check our current call for papers for special issues.

Please complete your proposal (see the template) and send it to the Assistant Editor(editorialboard.sapub@gmail.com, editorialboard2.sapub@gmail.com).

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