University of Nairobi Institutional Repository: Recent submissions
Now showing items 58201-58220 of 116514
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An Image Watermarking Method Based On The Singular Value Decomposition And The Wavelet Transform
(University of Nairobi, 28-09-07)A robust image watermarking scheme in which a binary image is embedded in the singular values of selected DWT blocks in the horizontal and vertical sub-bands of a 1-level decomposition of a gray-scale image is proposed. ... -
A spectral Subtraction Method for Noise reduction in Speech Signals
(University of Nairobi, 27-09-96)A noise suppression algorithm for enhancing speech signals corrupted by additive white Gaussian noise is presented in this paper. The algorithm is based on the subtraction of estimated noise spectrum from the noisy speech ... -
An Improved Enhancement Of Degraded Binary Text Document Images Using Morphological And Single Scale Retinex Operations
(University of Nairobi, 2012-07)This paper proposes a novel enhancement algorithm for degraded binary document images captured using a low end cell phone camera. The algorithm starts with colour to grey scale conversion followed by contrast stretching. ... -
Feeding Structures And Associated Organs In The Cichlid Fish, Oreochromis Esculentus (graham)
(2014-04-30)Teeth anatomy and gut morphology are described in Oreochromis esculentus (Graham) and related to the food habits of the species based on existing information and diet and food utilization. Three rows of oral teeth of ... -
Dry Matter Production And Partitioning In Two Cultivars Of Phaseolus Vulgaris Under Different Watering Regimes
(University of Nairobi, 1988-04)2 cultivars of the common bean were planted in 20 litre buckets filled with forest soil. 3 plants were maintained per bucket and the buckets spaced at 10 x 30 cm to approximate field spacing. The field capacity (FC) was ... -
Thiabendazole resistance in a field population of H. contortus from sheep in Rongai Division, Nakuru, Kenya
(University of Nairobi,, 1994)Representatives of 3 major groups of broad spectrum anthelmintics with different modes of action (thiabendazole (TBZ), levamisole (LVM) and ivermectin (IVM)) were used at the manufacturer's recommended dose rates against ... -
Case of G!S in Food Emergency Response:Case of G!S in Food Emergency Response
(University of Nairobi, 2013-09)This paper presents a framework for food emergency response and demonstrates the use of Geographical Information Systems as a solution to planning for and managing food emergencies.This is particularly critical in countries ... -
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A Colour Image Watermarking Technique Resistant To Affine Geometric Attacks
(University of Nairobi, 2013-09)This paper presents a colour image watermarking scheme resistant to affine geometric distortions. The technique involves embedding of the watermark in the host image in the Discrete Cosine Transform (DCT) domain in a ... -
Influence of ivermectin and clorsulon strategic treatments on liveweight gain and helminth infections of grazing calves in Kenya.
(University of Nairobi,, 2001)The growth rates of grazing calves were evaluated after subcutaneous strategic treatments using ivermectin (IVM, Ivomec) or IVM in combination with clorsulon (CLS, MSD Agvet). Thirty weaner calves harbouring infections of ... -
Autoradiographic analysis of the effects of Roll-0761 on the attrition and distribution patterns of 75Se-labelled Schistosoma mansoni schistosomula in mice.
(University of Nairobi,, 1991)The fate of 75Se-labelled S. mansoni (Puerto Rican strain) schistosomula in albino male mice (CD-1 strain) treated with Roll-0761 compared to untreated controls was followed by compressed tissue autoradiography. Roll-0761 ... -
Lateral Erosion of Rivers
(University of Nairobi, 1991)Lateral erosion in many rivers occurs on one bank while a concomitant deposition takes place on the alternate bank thus causing meandering rivers. The factors that cause this type of erosion are discussed and evaluated. A ... -
Verminous pneumonia and other microscopic lung lesions in wild animals in Kenya.
(University of Nairobi,, 1998)The following study describes the microscopic changes in the lungs of wild animals in Kenya suffering from lungworm infection and other diseases caused by other pathogens. Verminous pneumonia was the most common lesion ... -
A geometric attack resistant image watermarking scheme based on invariant centroids
(University of Nairobi, 2007)A digital image watermarking scheme that uses invariant centroids to detect and correct geometric attacks is proposed. The centroids are determined by computing a convergent geometric moment of a circular region of a ... -
Evaluating nurses' implementation of an infant-feeding counseling protocol for HIV-infected mothers: The Ban Study in Lilongwe, Malawi.
(University of Nairobi, 2009-04)A process evaluation of nurses' implementation of an infant-feeding counseling protocol was conducted for the Breastfeeding, Antiretroviral and Nutrition (BAN) Study, a prevention of mother-to-child transmission of HIV ... -
Histopathology of tissues from albino Wistar rats poisoned with Spirostachys venenifera
(University of Nairobi,, 1984)This African tree of the Euphorbiaceae family was suspected of being poisonous. It produces a copious white latex. Portions of branches were dried, ground up and fed to rats. Those receiving a diet containing 60% of the ... -
Maternal or infant antiretroviral drugs to reduce HIV-1 transmission.
(University of Nairobi, 2010-06)BACKGROUND: We evaluated the efficacy of a maternal triple-drug antiretroviral regimen or infant nevirapine prophylaxis for 28 weeks during breast-feeding to reduce postnatal transmission of human immunodeficiency virus ... -
Mucoid enteritis of rabbits in Kabete area, Kenya: a review of post-mortem cases.
(University of Nairobi,, 1988) -
Addition of 7 days of zidovudine plus lamivudine to peripartum single-dose nevirapine effectively reduces nevirapine resistance postpartum in HIV-infected mothers in Malawi.
(University of Nairobi, 2010-08)BACKGROUND: We assessed whether 7 days of zidovudine + lamivudine postpartum with single-dose nevirapine at labor decreases nevirapine resistance in HIV-infected women in Malawi. METHODS: HIV-infected pregnant women ...
