168 research outputs found
Comparative study of turbidity removal efficiency of green pea (Cicer arietinum) seed and pod extract for turbid water treatment
Natural coagulants are considered affordable and efficient substitutes to chemical coagulants for use in water treatment. The study investigated the turbidity removal efficiency of pea seed and pod extracts from surface water. Chemical and proximate analyses of pea seed and pod were evaluated. Optimum values of coagulant dose, pH and stock solution concentrations were determined using jar test. Turbidity removal efficiencies and residual turbidity of the coagulant were also evaluated. The highest turbidity removal efficiency was found to be 98% and 97% at 10% w/v stock solution concentration of the pea seed and pod extract respectively. The optimum pH suitable for coagulation of surface was found to be 6.8 and 6.6 at 10% w/v stock solution of pea seed and pod extract respectively. The pea seed and pod extract were found to be most efficient in removing turbidity from surface water at 10% (w/v) stock solution with optimum dose of 1600mg/L. The p-value was found to be 0.99, 0.0156 and 0.33 for Turbidity removal efficiency, pH and Residual turbidity of pea seed and pod respectively. Pea seed and pod turbidity removal efficiencies are statistically insignificant, but their pH and Residual turbidity values are statistically significant. The findings in this study suggest that both the Pea pod and Pea seed extract are effective in water coagulation, but pea seed extract is more effective in drinking water coagulation, while pea pod extract was cheaper and readily available.
 
Enzymatic Decolorization of Remazol Brilliant Blue Royal (RB 19) textile dye by White Rot Fungi
Synthetic dyes are widely used by different industries with over 7 ×105 metric tons produce globally each year. Dyes pose adverse effects including chemical oxygen demand, visual pollution, cytotoxicity, genotoxicity, mutagenicity and carcinogenicity on various types of living organisms. The versatile white rot fungi (basidiomycetes fungi) have developed specialized ligninolytic enzymes for reductive cleavage of dyes and xenobiotics. The present study optimized the decolorization of Remazol brilliant blue royal (RBBR) dye by enzymatic extracts of Coriolus versicolor and Pleurotusostreatus. Experiments were carried out by varying one parameter i.e. pH (2.5-6.5), temperature (30oC-60oC), enzyme activity (3.3U-20U), dye concentration (10mg/L-125mg/L) and time (0-480mins), while others constant to study its effects on decolorization of RBBR. From the results obtained, the optimum conditions for decolorization of RBBR by extracts of C. versicolor and P. ostreatus were pH 4.0, temperature of 300C, enzyme activity 20U, dye concentrations of 100mg/L and 50mg/L for C. versicolor and P. ostreatus respectively at the end of 480 minutes. At the optimized conditions, decolorizations for C. versicolor and P. ostreatus were 80.42% and 70.42% respectively. Highest laccase activity (19.50U) was recorded in C. versicolor compare to P. ostreatus (1.41U).
Effectiveness of a Federal Healthy Start Program in Reducing Infant Mortality
Objective: Infant mortality is an important indicator of the health status of a community. In this analysis, we aimed to evaluate temporal changes in infant mortality rates (IMR) in the Central Hillsborough Healthy Start (CHHS) program service area in Tampa, Florida compared to rates in the rest of Hillsborough County and the state.
Method: We conducted a five-year (2010-2014) trends analysis using birth and infant death data extracted from the Florida Community Health Assessment Resource Tool Set (CHARTS). The number of infant deaths and live births were used to calculate and compare IMRs in the CHHS catchment area to those in the rest of Hillsborough County, and the state of Florida. Three-year centered moving averages were directly adjusted to account for differences in the racial/ethnic distribution of mothers across geographic areas.
Results: Between 2010 and 2014, the IMR decreased 42.8% in the CHHS service area (from 14.5 to 8.3 per 1,000 live births) compared to decreases of 10.1% and 7.7% in the rest of Hillsborough County and the state of Florida, respectively. Additionally, the infant mortality gap in the CHHS catchment area narrowed from 72% in 2010 to 14% in 2014 compared to the rest of the state, and was eliminated when compared to the rest of Hillsborough County.
Discussion: The absolute and relative decreases in IMR in the CHHS catchment area reflect the program’s effectiveness in decreasing disparity in infant mortality. The quality services provided by the CHHS program have had a significant positive impact on the families served
The Effects of Childhood Social Support and Family Resiliency on Mental Health in Adulthood
The effect of social support on the overall health and quality of life in adulthood has been well documented particularly in chronic disease populations. Very few studies examined the relationships between childhood social support, family resiliency and mental health in adulthood in the community and among disadvantaged minority populations. We examined the role of social support and family resilience during childhood on subsequent mental health-related quality of life (HRQoL) in adulthood among racial/ethnic minorities.
A needs assessment survey which was designed to explore health determinants and quality of life indicators using a community-based participatory research (CBPR) approach in a low-income community in Tampa was analyzed. Participants were predominantly low-income non-Hispanic black and Hispanic population (n=187). The outcome mental HRQoL was measured using the validated Centers for Disease Control and Prevention’s (CDC) “Healthy Days Measure” instrument. We utilized sequential multivariable logistic regression models to examine the independent effects of childhood social support and family resiliency on mental HRQoL in adulthood.
Approximately 12.3% of study participants reported poor mental HRQoL (i.e. ≥14 unhealthy days due to mental health). Childhood social support and family resiliency were significant predictors of mental HRQoL in adulthood, after controlling for sociodemographic characteristics. Sleep and composite health issues in adulthood were also associated with mental HRQoL.
Our analyses highlight an opportunity to promote mental health through support of interventions that improve positive family relationships and reduce the burden of chronic health issues among non-Hispanic black and Hispanic children
Phytochemical screening and antifungal potentials of Citrus limon peels against Fusarium oxysporum and Rhizopus stolonifer causing rots in water melon (Citrullus lanatus L.)
This study investigated the phytochemical constituents and antifungal potential of Citrus limon peels using aqueous and methanol extracts against Fusarium oxysporum and Rhizopus stolonifer causing rots in water melon. The result of phytocemical screening revealed the presence of Saponin, Tannin, Phenols, Alkaloid and Flavanoid. Pathogenicity test conducted showed that F. oxysporum and R. stolonifer causes rots of Citrullus lanatus. The extracts inhibited the growth of F. oxysporum (76.67% and 60.00 %) methanol and aqueous respectively. R. stolonifer growth was inhibited (85.93% and 71.11%) methanol and aqueous extracts. The fungitoxicity of synthetic fungicide Benomyl was 95.56%. The methanol extracts has highest inhibitory activity than aqueous extract. The result of the findings indicates the Biofungicide potentials of Citrus limon peels as alternative to synthetic fungicide in management of phyto-pathogens of water lemon
Effective methods to detect metamorphic malware: A systematic review
The succeeding code for metamorphic Malware is routinely rewritten to
remain stealthy and undetected within infected environments. This characteristic is
maintained by means of encryption and decryption methods, obfuscation through
garbage code insertion, code transformation and registry modification which makes
detection very challenging. The main objective of this study is to contribute an
evidence-based narrative demonstrating the effectiveness of recent proposals. Sixteen
primary studies were included in this analysis based on a pre-defined protocol. The
majority of the reviewed detection methods used Opcode, Control Flow Graph (CFG)
and API Call Graph. Key challenges facing the detection of metamorphic malware
include code obfuscation, lack of dynamic capabilities to analyse code and application
difficulty. Methods were further analysed on the basis of their approach, limitation,
empirical evidence and key parameters such as dataset, Detection Rate (DR) and
False Positive Rate (FPR)
Correlates of postpartum sexual activity and contraceptive use in Kano, northern Nigeria
Practices related to resumption of coitus after childbirth remains poorly documented in Nigeria. This study examined factors associated with sexual intercourse, delivery-coitus interval, and contraceptive use among postpartum women attending a tertiary centre in Kano, northern Nigeria. A cross section of 317 women attending immunization, postnatal and family planning clinics within 12 months of childbirth was interviewed using a structured questionnaire. Vaginal intercourse was resumed by most women (n=212; 66.9%, 95% Confidence Interval (CI) = 61.8%, 72.2%) with delivery-coitus resumption interval (mean ± SD) of 9.6±5.2 weeks postpartum. The majority (67.9%) resumed sexual activity within 8 weeks of delivery. Nearly two-thirds 65.6% (n=139/212) of the sexually active women reported current use of contraceptives. Onset of postpartum sexual activity was independently associated with mode of delivery adjusted odds ratio (AOR) (95%CI)= 1.10 (1.03,1.78), baby‘s age AOR (95%CI) =2.10 (1.27, 8.70), number of living children AOR (95%CI)=1.21 (1.07,1.79), onset of menstruation AOR (95%CI)=0.34 (0.17,0.69) and co-habitation AOR (95%CI)=0.47 (0.016, 0.14). Contraceptive use was predicted by educational status, sexual activity, baby‘s age and menstruation. Most women attending maternal and child health clinics resumed sexual intercourse within 2 months of delivery, but only two-thirds used modern contraceptive methods. Contraceptive counseling should commence early, preferably during pregnancy.Keywords: sexual intercourse, postpartum, contraceptive use, predictors, Nigeri
The effect of acute respiratory events and respiratory stimulants on EEG-recorded brain activity in neonates: a systematic review
Objective: We conducted a systematic review to investigate electroencephalography (EEG) changes during periods of acute respiratory events such as apnoea and the effect of respiratory stimulants on EEG features in infants.
Methods: Studies examining respiration and EEG-recorded brain activity in human neonates between 28 and 42 weeks postmenstrual age were included. Two reviewers independently screened all records and included studies were assessed using the Joanna Briggs Institute Critical Appraisal Tool. The protocol was registered in PROSPERO (CRD42022339873).
Results: We identified 14 studies with a total of 534 infants. Nine articles assessed EEG changes in relation to apnoea, one assessed hiccups, and four investigated the effect of respiratory stimulants. The relationship between neonatal apnoea and EEG changes was inconsistent; EEG suppression and decreased amplitude and frequency were observed during some, but not all, apnoeas. Respiratory stimulants increased EEG continuity compared with before use.
Conclusions: Current studies in this area are constrained by small sample sizes. Diverse exposure definitions and outcome measures impact inference.
Significance: This review highlights the need for further work; understanding the relationship between respiration and the developing brain is key to mitigating the long-term effects of apnoea
Assessing compliance of cardiologists with the national cholesterol education program (NCEP) III guidelines in an ambulatory care setting
INTRODUCTION: The NCEP III -ATP guidelines provide clear clinical directives for lipid management especially statins therapy in appropriate patient groups. Compliance of primary care physicians with these guidelines especially in ambulatory care settings has been shown to be poor. The compliance of cardiologist to these guidelines is less documented. METHODS: A retrospective chart review of 386 patients managed in a large urban cardiology practice was undertaken. Patients with documented contraindications to use of statins were excluded from the study. Only patients with two or more years of follow-up in the practice were included. Demographic variables and medical history including CAD or its equivalent and its major risk factors were identified. The proportion of patients on statins and adequacy of statins therapy were recorded. The lipid profiles of all patients were also analyzed. RESULTS: Fifteen patients with documented contraindications to statins therapy including persistent/severe LFT abnormalities, allergies, and gastrointestinal intolerance were excluded. A total of 371 patients were included in the analysis. The mean age for patients in the study was 65 years (range: 42–84). 236 (64%) were males while 141 (36%) were females. 161 (43%) patients were on statins while 210 (57%) weren't. 88 (62%) of females were on stain compared to 116 (49%) of males (p = 0.001). 68% of patients below the age of 50 yrs were not on statins compared with 55% of those greater than 50 yrs (p = 0.01). 38% of patients on statins therapy had sub-optimal lipid profile despite greater than two years of therapy. No statistically significant differences in race and use of satins were noted. CONCLUSION: This study demonstrates a higher than expected prevalence of sub-optimal management of dyslipidemia among patients with established coronary heart disease without contraindications to statins managed by cardiologists. Cardiology and primary care practices require similar comprehensive routine lipid management program that is assiduously maintained and evaluated at both in-patient and out patient settings to ensure most patients receive optimal therapy with statins and other lipid lowering agents
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