School of Pure, Applied and Health Sciences (JA): Recent submissions
Now showing items 101-120 of 260
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Blood Pressure and Arterial Stiffness in Kenyan Adolescents With a+Thalassemia
(2017-03)Background-—Recent studies have discovered that a-globin is expressed in blood vessel walls where it plays a role in regulating vascular tone. We tested the hypothesis that blood pressure (BP) might differ between normal ... -
Analysis of Patterns of Physical Activity and Sedentary Behavior in an Urban Slum Setting in Nairobi, Kenya
(2016-03)Background: Insufficient physical activity and sedentary behavior are key risk factors for the emergence of noncommunicable diseases in the sub-Saharan African setting. Given the limited evidence base, research is required ... -
Interlinkage among cardio-metabolic disease markers in an urban poor setting in Nairobi, Kenya
(2016-02-09)Introduction: The main cardio-metabolic diseases _ mostly cardiovascular diseases such as stroke and ischemic disease _ share common clinical markers such as raised blood pressure and blood glucose. The pathways of development ... -
Blood Pressure and Arterial Stiffness in Kenyan Adolescents With the Sickle Cell Trait
(2017-05-22)The potential association between sickle cell trait (SCT) and increased arterial stiffness/blood pressure (BP) has not been evaluated in detail despite its association with stroke, sudden death, and renal disease. We ... -
Treatment of tungiasis with a twocomponent dimeticone: a comparison between moistening the whole foot and directly targeting the embedded sand fleas
(2017)Background: Tungiasis (sand flea disease) is caused by the penetration of female sand fleas (Tunga penetrans, Siphonaptera) into the skin. It belongs to the neglected tropical diseases and is prevalent in South America, ... -
Implementation of genomics research in Africa: challenges and recommendations
(2018-01-16)Background: There is exponential growth in the interest and implementation of genomics research in Africa. This growth has been facilitated by the Human Hereditary and Health in Africa (H3Africa) initiative, which aims to ... -
The effect of enhanced public–private partnerships on Maternal, Newborn and child Health Services and outcomes in Nairobi–Kenya: the PAMANECH quasi-experimental research protocol
(2014-09-30)Introduction: Rapid urbanisation in Kenya has resulted in growth of slums in urban centres, characterised by poverty, inadequate social services and poor health outcomes. The government's initiatives to improve access to ... -
Genomic and environmental risk factors for cardiometabolic diseases in Africa: methods used for Phase 1 of the AWI-Gen population crosssectional study
(2018-09-27)There is an alarming tide of cardiovascular and metabolic disease (CMD) sweeping across Africa. This may be a result of an increasingly urbanized lifestyle characterized by the growing consumption of processed and calorie-dense ... -
Treatment of Tungiasis with Dimeticone: A Proof-of- Principle Study in Rural Kenya
(2014-07)Tungiasis (sand flea disease) is a neglected tropical disease, prevalent in resource-poor communities in South America and sub-Saharan Africa. It is caused by an inflammatory response against penetrated female sand fleas ... -
Fully immunized child: coverage, timing and sequencing of routine immunization in an urban poor settlement in Nairobi, Kenya
(2016-05)Background: More efforts have been put in place to increase full immunization coverage rates in the last decade. Little is known about the levels and consequences of delaying or vaccinating children in different schedules.Vaccine ... -
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 ... -
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 Acid Treatment on the Chemical Properties of Clays from Selected Sites in Murang’a and Nyeri counties, Kenya
(2020-11-30)Assessing improvement on the quality of clay has been conducted by treatment with different concentrations of hydrochloric and oxalic acid. This project intended to assess the effect of acid treatment on the elemental ... -
Insecticidal Activity of Ocimum Suave Willd Extracts and Compounds against Sitophilus Zeamais Motschulsky
(2020-11-28)Insect pests cause significant loss of maize production in Africa. Among pests of maize, beetles are the most important, with the maize weevil (Sitophilus zeamais Motsch.) and the larger grain borer (Prostephanus truncatus ...