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Experimental Evaluation of Temperature Effects on Detarium microcarpum, Brachystegia eurycoma and Pleurotus Biomaterial Mud  [PDF]
K. C. Igwilo, G. O. Osueke, S. T. A. Okolie, P. A. L. Anawe, Okoli Nnanna
Open Journal of Yangtze Oil and Gas (OJOGas) , 2017, DOI: 10.4236/ojogas.2017.22007
Abstract: Three sets of drilling fluids were formulated from biomaterials such as Detarium microcarpum, Brachystegia eurycoma and Pleurotus. The laboratory measurements were carried out on plastic viscosity, yield point and fluid loss exposed at required temperatures and then evaluated. The field Polyanionic cellulose additive that is currently in use was also formulated and used as a control sample to biomaterial products. Xanthan gumpolymer on equal concentration was added to both muds. The three sets of muds comprises the one without weighting material and the ones weighted up with calcium carbonate and barite respectively for both biomaterial mud and Polyanionic mud were examined as per American Petroleum Institute Standard. The graphs of the rheological properties and fluid loss against temperature were plotted. It was shown from the plots that the yield point and plastic viscosity decreased with increase in temperature while fluid loss increased with increase in temperature for both biomaterial mud and Polyanionic mud. It was also shown from the tables that the plastic viscosity and yield point are slightly better than the Polyanionic mud but less active in fluid loss than the Polyanionic mud.
Housing Crises: A Theoretical Study of the Home Building Industry in Nigeria
Ugo Joseph Nnanna
International Business Research , 2010, DOI: 10.5539/ibr.v3n3p16
Abstract: The paper examines the housing problems in Nigeria and the home building market on an international viability landscape with special references to the Nigerian housing sector. The paper creates a platform for a global building industry company that is well capitalized through a series of mergers and acquisitions (M&A). Furthermore, the emphasis on the establishment of a global building company is imperative because of its role in developing and emerging housing markets where home ownership has just commenced and mortgage financing is rare.
Trends in treatment outcome of smear-positive pulmonary tuberculosis in Southeastern Nigeria, 1999 – 2008
Kingsley Nnanna Ukwaja
Italian Journal of Public Health , 2012, DOI: 10.2427/8660
Abstract: Background: the Directly Observed Treatment Short Course (DOTS) strategy was introduced into the tuberculosis control programme of Ebonyi, Southeastern, Nigeria in 1996. The impact of the programme on the treatment outcomes for smear-positive tuberculosis has not been assessed ever since. We assessed the trends in treatment outcome for new smear-positive pulmonary tuberculosis between 1999 and 2008. Methods: we conducted a retrospective analysis of the Ebonyi state Ministry of Health quarterly smear-positive tuberculosis statistical returns. Patients were treated and treatment outcome categories computed according to the WHO/National Tuberculosis Control Programme’s guidelines. Chi-square for trends was used to determine significance. Results: the number of smear-positive cases who registered for treatment fell from 1 361 patients in 1999 to 977 in 2008 (Trend χ2=349; P<0.001). The follow-up smear results at month two were not available for 16% of the patients in 1999; this unavailability decreased to 1.7% in 2008. The negative conversion rate at month two increased from 77.5% in 1999 to 95.9% in 2008 (Trend χ2=16.5; P<0.001). Treatment success rose from 74.9% in 1999 to 88.7% in 2008 (Trend χ2=12.8; P<0.001), whilst default rate declined from 12% to 4.3% (Trend χ2=55.6; P<0.001). Though decreasing (Trend χ2=4.64; P=0.031), the annual death rate remained at around 5% during the study period. Conclusions: monitoring, supervision and home visits have improved, and our DOTS programme has achieved an 85% treatment success and declining default rates. However, with the current low case notification and high mortality rates, alternative mechanisms are needed to achieve global stop-TB targets in the State.
Managing Innovation: An Empirical study of innovation and Change in Public and Private Companies
Ugo Joseph Nnanna
Journal of Management Research , 2009, DOI: 10.5296/jmr.v1i2.120
Abstract: The purpose of this research was to study the impact of innovation and change in public and private companies and its relationship to the overall net income or losses in the respective companies. The research describes and explains the relationship between managers/leaders and how innovation and change is perceived in these companies by the key employees’. The factors that will be considered in this study are the behavioral aspects of employees’ perception of innovation, and their ability to accept change in their respective daily functions. Results for Hypothesis 1 for all companies based on the surveyed results demonstrate that under favorable economic conditions companies with good leadership easily implement innovation and have favorable bottom line. Hypothesis 2 for all companies also demonstrates that under favorable economic conditions employees that are open to Innovation and Change in Public and Private Companies directly translates to a favorable bottom line.
An Optimal DASH Diet Model for People with Hypertension Using Linear Programming Approach  [PDF]
Anayo Charles Iwuji, Mercy Nnanna, Nonso Ifeyinwa C. Ndulue
Open Journal of Optimization (OJOp) , 2016, DOI: 10.4236/ojop.2016.51002
Abstract: Selecting diets by quantitative techniques is becoming increasingly common. Linear programming is the most popular technique for the selection of least cost mixes of food to meet specific nutritional requirements for a particular group of persons for either general health or disease-related reason. Hypertension is a silent killer and its prevalence rate especially in the developing countries, which has been mostly associated to demographic, environmental and genetic factors, is becoming alarming. The DASH diet has been clinically proven to prevent and control hypertension. In this paper, a model that provides a Daily Optimal (minimum cost) DASH Diet plan for people with hypertension is formulated. The objective is to obtain daily minimum cost diet plans that satisfy the DASH Diets’ nutrients Tolerable Upper and Lower Intake for different daily Calorie Levels. The formulated DASH diet model was further illustrated using real data set with food samples gotten from the DASH eating plan chart. A DASH diet model for a hypertensive person with a 2000-daily-caloric need was formulated and its optimal diet plan for a day obtained with a total cost of 944.41 Naira. Optimal diet plans for other recommended daily calorie levels were also obtained.
Rural households perception of the impact of crude iol exploration in Ogba/Egbema/Ndoni Local Government area of Rivers State, Nigeria
CG Okoli
Journal of Agriculture and Social Research (JASR) , 2006,
Abstract: Ogba/Egbema/Ndoni local government area of Rivers State, Nigeria is one of the largest reservoirs of crude oil in Nigeria and has experienced oil exploration and exploitation activities for many decades. This study assesses rural households’ perception of the impact of these activities on their environment, health and socio-economic lives. Findings revealed that oil exploitation and its attendant pollution had impacted negatively on the socio-economic activities of respondents compelling them to combine farming activities and fishing with trading as alternative survival strategy. Oil exploitation was linked to pollution of the air, soils, waters and the moral fabric of the communities. About 42% of the inhabitants were engaged in farming prior to oil exploration, 38.09% in fishing while 19.05% were engaged in hunting but currently 19.05% were engaged in farming, 14.29% were engaged in fishing and 11.00% in hunting, while 26.00% now combine fishing with trading and 28.57% combine farming with trading. The high cases of sexual promiscuity, prostitution, sexually transmitted diseases, high rate of school dropouts, broken homes and unwanted pregnancies among others in the area were linked to activities in the area. About 38% of the habitants reported fever due to heat generated by gas flares, while 23.81% and 19.05% indicated various gastrointestinal disorders contacted by drinking rain water, water from polluted rivers and streams or the consumption of fish from polluted water bodies. Another 19.05% suffer from various respiratory ailments such as bronchitis, asthma, cough asphyxiation as well as ocular diseases (4.76%). This study indicates that from the perspective of the rural farmers, the negative impacts of oil exploitation activities greatly outweigh the benefits derived.
Anti-Microbial Resistance Profiles Of E. Coli Isolated From Free Range Chickens In Urban And Rural Environments Of Imo State, Nigeria
Okoli IC
Online Journal of Health & Allied Sciences , 2006,
Abstract: Information on the resistance profiles of normal intestinal flora of extensively reared chickens that hardly receive antibiotics in the developing countries can serve as important means of understanding the human/animal pathogens drug resistance interactions in the zone. Three hundred and fifty E. coli isolates, comprising 133 from urban and 217 from rural sites in Imo state, Nigeria, were screened for anti-microbial resistance profile against 10 antibiotics using the disc diffusion method. Overall percentage anti-microbial resistance of the isolates against cotrimoxazole, ampicillin, nalidixic acid, chloramphenicol and nitrofurantoin (72–92%) were very high. The organisms were highly sensitive to other antibiotics, especially gentamicin and ciprofloxacin. The 59.5% overall mean percentage resistance recorded at the urban area was significantly higher than the 46.8% recorded at the rural area (p<0.05). With the exception of the figures for cotrimoxazole and ampicillin, resistance values obtained against the other antibiotics at the urban sites were statistically higher than those obtained at the rural sites (p<0.05). Zero resistance was recorded against the fluoroquinolones, norfloxacin and ciprofloxacin at all the rural sites except at Enyiogwugwu where a 28.6% resistance was obtained against norfloxacin. Since free-range chickens rarely receive antibiotic medication, it is concluded that the highly resistant E. coli organisms isolated from them may be reflecting consequences of human drug use in the study areas.
Potentials of leaves of Aspilia africana (Compositae) in wound care: an experimental evaluation
CO Okoli, PA Akah, AS Okoli
BMC Complementary and Alternative Medicine , 2007, DOI: 10.1186/1472-6882-7-24
Abstract: The effect of the methanol extract (ME) and the hexane (HF) and methanol (MF) fractions (obtained by cold maceration and graded solvent extraction respectively) on bleeding/clotting time of fresh experimentally-induced wounds in rats, coagulation time of whole rat blood, growth of microbial wound contaminants and rate of healing of experimentally-induced wounds in rats were studied as well as the acute toxicity and lethality (LD50) of the methanol extract and phytochemical analysis of the extract and fractions.The extract and fractions significantly (P < 0.05) reduced bleeding/clotting time in rats and decreased coagulation time of whole rat blood in order of magnitude of effect: MF>ME>HF. Also, the extract and fractions caused varying degrees of inhibition of the growth of clinical isolates of Pseudomonas fluorescens and Staphylococcus aureus, as well as typed strains of Ps. aeruginosa (ATCC 10145) and Staph. aureus (ATCC 12600), and reduced epithelialisation period of wounds experimentally-induced in rats. Acute toxicity and lethality (LD50) test in mice established an i.p LD50 of 894 mg/kg for the methanol extract (ME). Phytochemical analysis revealed the presence of alkaloids, saponins, tannins, flavonoids, resins, sterols, terpenoids and carbohydrates.The leaves of A. africana possess constituents capable of arresting wound bleeding, inhibiting the growth of microbial wound contaminants and accelerating wound healing which suggest good potentials for use in wound care.Wounds occur when the continuity of the skin or mucous membrane is broken [1]. Injury to tissues results in bleeding (which may be life-threatening depending on the severity) with subsequent activation of acute inflammatory reactions. Bleeding from damaged blood vessels in the injured tissue must be arrested through the process of haemostasis. The injury and associated acute inflammatory response result to necrosis of specialized cells and damage to the surrounding matrix [2] and the host tissues
Serum procalcitonin: Early detection of neonatal bacteremia and septicemia in a tertiary healthcare facility
Ibeh Isaiah Nnanna,Osifo John Ehis,Iyere Itoya Sidiquo,Ibeh Georgina Nnanna
North American Journal of Medical Sciences , 2011,
Abstract: Background: The benefits of procalcitonin measurement in neonatal bacteremia/septicemia with suspected nosocomial infection are unclear and unresearched. Aim: The aim of the study was to assess procalcitonin value as an early or first line diagnosis/prognosis for bacterial neonatal septicemic infection in selected critically ill neonates. Patients and Methods: An observational cohort study in a 10-bed intensive care unit was performed. Sixty neonates, with either proven or clinically suspected, but not confirmed, bacterial neonatal septicemic infection were included. Procalcitonin measurements were obtained on the day when the infection was suspected. Neonates with proven septicemic infection were compared to those without. The diagnostic value of procalcitonin was determined through the area under the corresponding receiver operating characteristic curve (AUROCC). In addition, the predictive value of procalcitonin variations preceding the clinical suspicion of infection was also assessed. Results: Procalcitonin was the best early predictor of proven infection in this population of neonates with a clinical suspicion of septicemia (AUROCC = 0.80; 91.6% CI, 0.68–0.91). In contrast, CRP elevation, leukocyte count and fever had a poor predictive value in our population. Conclusion: PCT monitoring could be helpful in the early diagnosis of neonatal septicemic infection in the intensive care unit. Both absolute values and variations should be considered and evaluated in further studies.
An Overview of the Challenges and Opportunities for Globalization of Nigeria Libraries
SE Odeh, AC Okoli
Information Manager (The) , 2008,
Abstract: The paper is an overview of the existing challenges and opportunities of globalization of Nigerian libraries. It examine the challenges and opportunities for the establishment of viable information and communication Technologies (ICTs) and recommends the way forward for interconnectivity of Nigerian libraries to facilitate resource sharing and exchange of information.
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