Aquatic Insect Fauna of Three River Systems in the Akyem Abuakwa Traditional area of The Eastern Region of Ghana

Three river systems in the Akyem Abuakwa Traditional Area: Ayensu, Birim and Densu were sampled over a period of one year during the wet, dry and intermediate seasons for aquatic insect fauna. Fifteen sampling sites were chosen based on certain parameters such as accessibility as well as the inclusion of high and low impact sites (i.e. close to or far from a town or village) or near areas with high human activity. Four sampling methods were employed: sweeping, core sampling, sieving and washing of stones, wood fragments and submerged objects as well as aquatic plants and leaves. Fifty seven (57) species of aquatic insects belonging to 26 families of 7 orders were recorded. Hemiptera, Ephemeroptera and Odonata were the most diverse and abundant orders with Hemiptera being the most diverse order with 17 species from 8 families. The most abundant species was Rhagovelia obesa (Hemiptera: Veliidae). The highest number of insects was collected in December whiles July recorded the lowest numbers. River Densu recorded the highest number of insects whiles River Birim recorded the highest diversity of insects with 36 species. River Ayensu had both the lowest numbers and diversity of insects

Standing out in the hospitality sector: The case of Bloombar

Undergraduate thesis submitted to the Department of Business Administration, Ashesi University, in partial fulfillment of Bachelor of Science degree in Business Administration, May 2020The hospitality industry is one of the fastest growing industries worldwide and measures need to be put in place to ensure full utilization of the potential of this industry. Ghana’s economy is increasingly becoming more dependent on the hospitality industry however, the food and beverages sector of this industry has not been substantially studied by scholars. The Seven P’s of the Marketing Mix is checklist that service providers can use to ensure the full satisfaction of their target markets. This research paper seeks to analyse the various components of the marketing mix that customers prioritize to serve as a rubric for individuals looking to set up establishments in the food and beverages sector of the hospitality industry. In accordance with the goals of the research, the literature reviewed discusses how the Seven P’s of the marketing mix influences the success of a firm in the food and beverages sector of the hospitality industry. The study concludes with recommendations on the right way to implement the Seven P’s of the marketing mix for a specific target market in the food and beverages sector of the hospitality industry.Ashesi Universit

More Work, Less Reward: The Minority Tax on US Medical Students

Introduction: Minority tax is defined as the burden of time and resources placed on minority persons to represent and advocate for their communities. We determined whether medical students underrepresented in medicine (URM) or from historically excluded (HE) populations experience a minority tax and characterized its effects. Methods: This cross-sectional survey of US medical students occurred November 2020 - June 2021. We used Mann-Whitney U tests to compare metrics between URM and HE participants and their peers. The primary outcome was time invested in activism/diversity initiatives versus other work. Secondary outcomes included measures of microaggressions, discrimination, institutional culture, anxiety/depression, mentorship, and sleep. We performed thematic analysis of open-ended questions about participants’ experiences with minority tax. Results: A total 282 students included 39 (13.8%) URM and 150 (53.9%) HE participants. Compared to peers, URM and HE participants invested an additional 36.4 (p = 0.005) and 46.8 (p = 0.006) annual hours on advocacy and 62.4 (p \u3c 0.001) and 41.6 (p = 0.001) annual hours on diversity initiatives, respectively. URM and HE participants reported more microaggressions / discrimination, less inclusive environments, and no differences in access to mentorship or sleep. Six themes were evident: (1) URM and HE students feel obligated to do diversity, equity, and inclusion (DEI) work, (2) students doing DEI work experience minority tax, (3) minority tax is negatively associated with wellness, (4) learning environment changes may mitigate minority tax, (5) there is a demand for increased representation and improved DEI education, and (6) an increased DEI budget might reduce the minority tax for students. Conclusion: URM and HE medical students experience a minority tax that may affect their wellbeing. These findings should serve as a call for action by medical school leaders

Ghana planning and implementation progress report for the CGIAR Initiative on Sustainable Intensification of Mixed Farming Systems

This report captures key outputs, and follow-up actions since the Ghana Country Planning and Inception Meeting for the Sustainable Intensification of Mixed farming Systems Initiative was held in Accra, Ghana, on 12 July 2022. Various partners have been engaged in the Initiative in Ghana so far, including the National Agricultural Research and Extension Systems (NARES), Universities, and National governments/ agricultural administrations (See participants list in Annex)

Natural enemies of the fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) in Ghana

Open Access JournalThe fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae), is an invasive insect pest attacking maize in Ghana and sub-Saharan Africa countries. Biological control will need to be an important management strategy, and a first step was to identify potential natural enemies. Sampling was conducted in different localities of the 10 regions of Ghana from May to Nov 2017. A total of 1,062 larvae were collected from 106 maize farms, and the presence of natural enemies was recorded in 18 (17.0%) farms. Among natural enemies recorded, 7 species were parasitoids: Chelonus bifoveolatus Szpligeti, Coccygidium luteum (Brull), Cotesia icipe Fernandez, Meteoridea testacea (Granger), and Bracon sp. (all Hymenoptera: Braconidae), Anatrichus erinaceus Loew (Diptera: Chloropidae), and an undetermined tachinid fly (Diptera: Tachinidae). The parasitism rate was 3.58%. Three predator species were collected: Pheidole megacephala (F.) (Hymenoptera: Formicidae), Haematochares obscuripennis Stål, and Peprius nodulipes (Signoret) (both Heteroptera: Reduviidae). The 2 most abundant parasitoids were C. bifoveolatus and C. luteum with a relative abundance of 29.0% and 23.7%, respectively, and a parasitism rate of 1.04% and 0.85%, respectively. However, C. bifoveolatus was the most dispersed parasitoid, found in 6.6% of the inspected sites within all the agroecological zones of Ghana. This species is a good candidate as a biological control agent for fall armyworm in Africa. The predator that was most abundant (46.0%) and dispersed (3.8% of the farms) was P. megacephala. El cogollero, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae), es una plaga de insectos invasora que ataca el maíz en Ghana y los países de África subsahariana. El control biológico deberá ser una estrategia de manejo importante, y un primer paso es identificar los enemigos naturales potenciales. Se realizó el muestreo en diferentes localidades de las 10 regiones de Ghana desde mayo hasta noviembre del 2017. Se recolectó un total de 1.062 larvas de 106 granjas de maíz, y se registró la presencia de enemigos naturales en 18 granjas (17.0%). Entre los enemigos naturales registrados, 7 especies fueron parasitoides: Chelonus bifoveolatus Szpligeti, Coccygidium luteum (Brull), Cotesia icipe Fernandez, Meteoridea testacea (Granger) y Bracon sp. (todos los Hymenoptera: Braconidae), Anatrichus erinaceus Loew (Diptera: Chloropidae) y una mosca taquinida indeterminada (Diptera: Tachinidae). La tasa de parasitismo fue del 3.58%. Se recolectaron tres especies de depredadores: Pheidole megacephala (F.) (Hymenoptera: Formicidae), Haematochares obscuripennis Stål y Peprius nodulipes (Signoret) (ambos Heteroptera: Reduviidae). Los 2 parasitoides más abundantes fueron C. bifoveolatus y C. luteum con una abundancia relativa del 29.0% y 23.7%, respectivamente, y una tasa de parasitismo del 1.04% y 0.85%, respectivamente. Sin embargo, C. bifoveotus fue el parasitoide más disperso, encontrado en el 6.6% de los sitios inspeccionados dentro de todas las zonas agroecológicas de Ghana. Esta especie es un buen candidato como agente de control biológico para el cogollero en África. El depredador que fue más abundante (46.0%) y disperso (3.8% de las granjas) fue P. megacephala

Potential health impacts of heavy metals on HIV-infected population in USA.

Noninfectious comorbidities such as cardiovascular diseases have become increasingly prevalent and occur earlier in life in persons with HIV infection. Despite the emerging body of literature linking environmental exposures to chronic disease outcomes in the general population, the impacts of environmental exposures have received little attention in HIV-infected population. The aim of this study is to investigate whether individuals living with HIV have elevated prevalence of heavy metals compared to non-HIV infected individuals in United States. We used the National Health and Nutrition Examination Survey (NHANES) 2003-2010 to compare exposures to heavy metals including cadmium, lead, and total mercury in HIV infected and non-HIV infected subjects. In this cross-sectional study, we found that HIV-infected individuals had higher concentrations of all heavy metals than the non-HIV infected group. In a multivariate linear regression model, HIV status was significantly associated with increased blood cadmium (p=0.03) after adjusting for age, sex, race, education, poverty income ratio, and smoking. However, HIV status was not statistically associated with lead or mercury levels after adjusting for the same covariates. Our findings suggest that HIV-infected patients might be significantly more exposed to cadmium compared to non-HIV infected individuals which could contribute to higher prevalence of chronic diseases among HIV-infected subjects. Further research is warranted to identify sources of exposure and to understand more about specific health outcomes

Human Blood Concentrations of Cotinine, a Biomonitoring Marker for Tobacco Smoke, Extrapolated from Nicotine Metabolism in Rats and Humans and Physiologically Based Pharmacokinetic Modeling

The present study defined a simplified physiologically based pharmacokinetic (PBPK) model for nicotine and its primary metabolite cotinine in humans, based on metabolic parameters determined in vitro using relevant liver microsomes, coefficients derived in silico, physiological parameters derived from the literature, and an established rat PBPK model. The model consists of an absorption compartment, a metabolizing compartment, and a central compartment for nicotine and three equivalent compartments for cotinine. Evaluation of a rat model was performed by making comparisons with predicted concentrations in blood and in vivo experimental pharmacokinetic values obtained from rats after oral treatment with nicotine (1.0 mg/kg, a no-observed-adverseeffect level) for 14 days. Elimination rates of nicotine in vitro were established from data from rat liver microsomes and from human pooled liver microsomes. Human biomonitoring data (17 ng nicotine and 150 ng cotinine per mL plasma 1 h after smoking) from pooled five male Japanese smokers (daily intake of 43 mg nicotine by smoking) revealed that these blood concentrations could be calculated using a human PBPK model. These results indicate that a simplified PBPK model for nicotine/cotinine is useful for a forward dosimetry approach in humans and for estimating blood concentrations of other related compounds resulting from exposure to low chemical doses

Developmental Sex Differences in Nicotinic Currents of Prefrontal Layer VI Neurons in Mice and Rats

There is a large sex difference in the prevalence of attention deficit disorder; yet, relatively little is known about sex differences in the development of prefrontal attention circuitry. In male rats, nicotinic acetylcholine receptors excite corticothalamic neurons in layer VI, which are thought to play an important role in attention by gating the sensitivity of thalamic neurons to incoming stimuli. These nicotinic currents in male rats are significantly larger during the first postnatal month when prefrontal circuitry is maturing. The present study was undertaken to investigate whether there are sex differences in the nicotinic currents in prefrontal layer VI neurons during development.Using whole cell recording in prefrontal brain slice, we examined the inward currents elicited by nicotinic stimulation in male and female rats and two strains of mice. We found a prominent sex difference in the currents during the first postnatal month when males had significantly greater nicotinic currents in layer VI neurons compared to females. These differences were apparent with three agonists: acetylcholine, carbachol, and nicotine. Furthermore, the developmental sex difference in nicotinic currents occurred despite male and female rodents displaying a similar pattern and proportion of layer VI neurons possessing a key nicotinic receptor subunit.This is the first illustration at a cellular level that prefrontal attention circuitry is differently affected by nicotinic receptor stimulation in males and females during development. This transient sex difference may help to define the cellular and circuit mechanisms that underlie vulnerability to attention deficit disorder

A Descriptive Study of Emotional Well-Being Among Women in Ghana

<p>Mental illness is prevalent worldwide in all cultures with varying manifestations. Its socioeconomic impact cannot be underestimated. Mental health accounts for as much as 14 percent of the global disease burden (Prince, et al. 2007) and depression is ranked as the fourth leading contributor to the global disease burden. Nevertheless, mental health remains largely ignored worldwide, especially in developing nations. </p><p>This cross-sectional study, examines depression in two rural districts in Ghana, West Africa. Ghana, like many African nations, consists of many ethnic groups, with lineage networks that dictate personal and public behaviors. Ghana is unique in that approximately half of the population belongs to the Akan, matrilineal clan. The study hypothesized that by examining two clan groups (the Akan and Ga-Adangbe) that differed in lineage a statistically significant difference in rates of depression would be ascertained.</p><p>Upon receipt of ethical board approval from the Duke University Institutional Review Board in Durham, NC and Noguchi Memorial Institute for Medical Research Institutional Review Board in Ghana, researchers using the Depression Anxiety Stress Scales Short form (DASS-21) in a geographically randomly selected sample to measure depression as well as anxiety and stress among the participants and a demographic survey, researchers compared the prevalence of depression between the matrilineal Akan clan and patrilineal Ga-Adangbe clan. Data was analyzed using STATA 11.0.</p><p>The results indicate a rejection of the null hypothesis. There is a statistically significant difference in depression score between the women in the Ga-Adangbe clan and Akan clan. This study reports high co-morbidity of anxiety and stress with depression. Further research should expand to include other tribes in Ghana and other mental illnesses.</p>Thesi