Journal Articles: Recent submissions
Now showing items 481-500 of 1000
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Effect of boron concentration on physicochemical properties of boron-doped carbon nanotubes
(Elsevier, 2015-01-07)Boron-doped carbon nanotubes (B-CNTs) were synthesized using chemical vapour deposition (CVD) floating catalyst method. Toluene was used as the carbon source, triphenylborane as boron as well as the carbon source while ... -
Charge extracting buffer layers in bulkheterojunction organic solar cell
(Springer, 2015-08-27)The effects of boron and nitrogen-doped carbon nanotubes (B- or N-CNTs) have been investigated as photoactive and charge extracting layer in bulk heterojunction organic solar cell composed of poly(3-hexylthiophene) [P3HT] ... -
(4-{[(Pyridin-4-yl)methylidene]amino}- phenyl)ferrocene
(2012-11-21)The asymetric unit of the title compound, [Fe(CH)(CHN)], contains two independent mol-ecules whose conformations differ, especially in the 4-{(pyridin-4-yl)methyl-idene]amino}-phenyl unit where one is flipped by almost ... -
Organic Solar Cells with Boron- or Nitrogen-Doped Carbon Nanotubes in the P3HT : PCBM Photoactive Layer
(Hindawi Publishing Corporation, 2015-12-02)Either boron- or nitrogen-doped carbon nanotubes (B- or N-CNTs) were incorporated in bulk heterojunction organic solar cells photoactive layer composed of poly(3 hexylthiophene) (P3HT) : (6,6)-phenyl-C61-butyric acid methyl ... -
Bulk Heterojunction Solar Cell with Nitrogen-Doped Carbon Nanotubes in the Active Layer: Effect of Nanocomposite Synthesis Technique on Photovoltaic Properties
(2015-05-08)Nanocomposites of poly(3-hexylthiophene) (P3HT) and nitrogen-doped carbon nanotubes (N-CNTs) have been synthesized by two methods; specifically, direct solution mixing and in situ polymerization. The nanocomposites were ... -
Nitrogen-Doped Carbon Nanotubes Synthesised by Pyrolysis of (4-{[(Pyridine-4-yl)methylidene]amino}phenyl)ferrocene
(Hindawi Publishing Corporation, 2013-08-13)Nitrogen-doped carbon nanotubes (N-CNTs) were synthesized by pyrolysis of (4-{[(pyridine-4-yl)methylidene]amino}phenyl) ferrocene in a solution of either acetonitrile or toluene as carbon source. This was achieved by testing ... -
A review on carbon nanotube/polymer composites for organic solar cells
(John Wiley & Sons, Ltd., 2014-04-13)Carbon nanotubes (CNTs) have unique properties, such as their electrical conductivity, that enable them to be combined with conducting polymers to form composites for use in organic solar cells (OSCs). It is envisaged that ... -
An Effort Estimation Method for Service-Oriented Architecture
(2020-10-16)Determining size and effort of SOA systems is critical for managing SOA projects. As a consequence, a number of methods have been proposed to estimate effort of building SOA projects but the problem of estimating SOA ... -
Instructional Usefulness of ICT’s as perceived by Lecturers in Technical Training Institutions in Kenya
(2021-01)Information Communication Technologies (ICT’s) is now the source of information used for instruction in our institutions of learning. Teacher education has received a big challenge as educators have to keep pace with the ... -
Species composition and distribution of mayflies (Ephemeroptera) in relation to land use systems along the Thika River, Kenya
(Taylor & Francis Group, 2021-02-26)Mayflies (order Ephemeroptera) are widely distributed and commonly used in biological assessment of water quality because of their sensitivity. Their application as bio-indicators in tropical streams and rivers, however, ... -
Effect of Transformational Leadership Style on Employee Engagement In Public Secondary Schools, Murang’a County, Kenya
(Society for Science and Education, 2018-11-25)This study sought to examine the effect of employee transformational leadership style on employee engagement in public secondary schools of Murang’a County in Kenya. A survey research design was employed. The target ... -
Effect of Authentic Leadership Style on Employee Engagement In Public Secondary Schools, Murang’a County, Kenya
(Society for Science and Education, 2018-11-25)This study sought to examine the effect of employee authentic leadership style on employee engagement in public secondary schools of Murang’a County in Kenya. A survey research design was employed. The target population ... -
Effect of Transactional Leadership Style on Employee Engagement
(Strategic Journals, 2020-11-12)This study examined the effect transactional leadership style on employee engagement in public secondary schools of Murang’a County in Kenya. A survey research design was employed. The target population was 3,860 teachers. ... -
Gender, Leadership Style and Employee Engagement
(IOSR Journals, 2021-01)This study sought to establish the relationship between gender, leadership styles and teacher engagement in public secondary schools of Murang’a County, Kenya. A survey research design was used. A sample of 368 respondents ... -
Level of Education, Leadership Style and Employee Engagement
(IISTE, 2021-01-31)This study sought to establish the relationship between the level of education, leadership style and teacher engagement in public secondary schools of Murang’a County, Kenya. A survey research design was used. A sample of ... -
Effect of Dark Leadership Style on Employee Engagement
(Strategic Journals, 2020-11-12)This study examined the effect of dark leadership style on employee engagement in public secondary schools of Murang’a County in Kenya. A survey research design was employed. The target population was 3,860 teachers. ... -
Effect of Governace on Performance of County Governments In Kenya
(2020-10-25)This study’s purpose was to evaluate the effect of governance on performance of county governments in Kenya. The data collection instrument used was Questionnaire. The questionnaire collected primary data from seven counties ... -
Using Feature Selection Methods to Discover Common Users’ Preferences for Online Recommender Systems
(2021-01)Recommender systems have taken over user’s choice to choose the items/services they want from online markets, where lots of merchandise is traded. Collaborative filtering-based recommender systems uses user opinions and ... -
The Influence of Communication Climate on Employee Performance in Selected Large Manufacturing Businesses in Eritrea
(2019-04)Manufacturing businesses, particularly the manufacturing businesses in Eritrea, face challenges in terms of increasing productivity in which their products are competitive in the market. The contribution of the manufacturing ... -
Social Media and Personal Branding of Gospel Musicians in Kenya
(2020-09)The paper investigated the influence of social media on personal branding of gospel Musicians in Kenya. The objectives of the study were to establish the forms of social media used for personal branding, to identify the ...
