Effects of Adolescents Exposure to Sexual Contents on Social Media in Nigeria

The study examined the effects of adolescents’ exposure to sexual contents as available in the social media. Data was gathered among 305 literates adolescents using quantitative structured face-to-face interviews. They were distributed using Nigerian age-sex ratio of 51 and 49 between male and female respectively. The study locations consist of densely populated urban areas in Lagos metropolis, Nigeria. The locations were chosen due to high proportion of adolescents in the areas according to the country’s census results. Data were analysed using univariate and multivariate analyses. Common social media identified among the respondents includes Facebook, Twitter, YouTube, Flickr, Instagram and LinkedIn. The result also revealed that users of social media in age group 10-14 years are 4.614 times more likely to be exposed to sexual activity at P-value = 0.000. Adolescent users of social media with primary education are 26.953 times more likely to be involved in sexual activity (P-value = 0.000). Those who use social media like Twitter, Facebook, YouTube and Instagram are 6.932, 4.630, 3.566 and 2.682 times (respectively) more likely to be exposed to sexual activity compared to their counterparts that use other forms of media. The paper posits that it is inimical not to monitor adolescents’ exposure to sexual contents and censor the scenes available on social media gadgets. The study recommends that sexuality education must be popularised in order to stem the risk of HIV/AIDS among the group studied

Quantum codes give counterexamples to the unique pre-image conjecture of the N-representability problem

It is well known that the ground state energy of many-particle Hamiltonians involving only 2-body interactions can be obtained using constrained optimizations over density matrices which arise from reducing an N-particle state. While determining which 2-particle density matrices are "N- representable" is a computationally hard problem, all known extreme N-representable 2-particle reduced density matrices arise from a unique N-particle pre-image, satisfying a conjecture established in 1972. We present explicit counterexamples to this conjecture through giving Hamiltonians with 2-body interactions which have degenerate ground states that cannot be distinguished by any 2-body operator. We relate the existence of such counterexamples to quantum error correction codes and topologically ordered spin systems.Comment: 4 pages, 1 figur

N-Heterocyclic Carbene Non-Innocence in the Catalytic Hydrophosphination of Alkynes

Studies on alkyne hydrophosphination employing nickel-NHC catalysts (NHC=N-heterocyclic carbene) revealed that the free N-alkyl substituted NHCs themselves were catalytically active. DFT calculations showed the mechanism involves the NHC acting as a Bronsted base to form an imidazolium phosphide species which then undergoes rate-limiting nucleophilic attack at the terminal alkyne carbon. This mechanism explains the preference seen experimentally for reactions with aryl substituted phosphines and alkynes, while the rearrangements of the alkenyl anion formed upon P-C bond formation account for the observation of both Z- and E-regioisomers of the products

Seroprevalence and risk factors of Hepatitis B and Hepatitis C infections among pregnant women in the Asante Akim North Municipality of the Ashanti region, Ghana; a cross sectional study.

Background: Viral hepatitis is a serious public health problem affecting billions of people globally with maternal-fetal transmission on the rise. Objectives: This study sought to determine the prevalence and factors associated with hepatitis B virus (HBV) and hepatitis C virus (HCV) infections among pregnant women in the Asante Akim North Municipality, in the Ashanti region of Ghana. Methods: In this cross-sectional study 168 pregnant women were recruited from the Agogo Presbyterian hospital. Blood samples were collected for the detection of Hepatitis B Surface Antigen (HBsAg) and anti-HCV antibodies. A pretested questionnaire was used to obtain demographic data and identify the risk factors associated with the two infections. Results: Of the 168 participants studied, 16 (9.5%) tested positive for HBV and 13 (7.7%) tested positive for HCV representing 9.5% and 7.7% respectively. A participant tested positive for both HBV and HCV co-infection representing 0.6%. Undertaking blood transfusion, tattooing and sharing of needles were associated with hepatitis C infection (P=0.001). HBV was not associated with any of the risk factors (P>0.05). Conclusion: Our findings suggest a high prevalence of hepatitis B and hepatitis C among pregnant women; blood transfusion, tattooing and sharing of hypodermic needles were associated with hepatitis C nfection. Measures to reduce the disease and transmission burden must be introduced

Long-term continuous administration of a hydro-ethanolic extract of Synedrella nodiflora (L) Gaertn in male Sprague-Dawley rats: biochemical, haematological and histopathological changes

Background: Conflicting reports about the toxicity of Synedrella nodiflora (L) Gaertn (family Asteraceae), a plant traditionally used in Ghana for the management of epilepsy, abound in literature. The present study evaluates the effect of a 90-day continuous oral administration of a hydro-ethanolic whole plant extract of Synedrella nodiflora (SNE) in male Sprague-Dawley rats.Methods: The toxicological evaluation of the extract (100, 300 and 1000 mgkg-1) was focused on haematological, serum biochemical parameters and histopathological changes of some isolated organs.Results: The extract produced no mortality in the rats treated during the study period. Only SNE 100 mgkg-1 produced significant decrease in white blood cell and neutrophil counts and an increase in albumin, globulin, total bilirubin, total protein and potassium levels. The higher doses (SNE 300 and 1000 mgkg-1) had no significant effect on all the haematological and biochemical parameters measured. Histopathological assessment of the liver, kidney and heart revealed no abnormalities in rats treated with the extracts. Only the SNE 1000 mgkg-1 produced distortions of the branching arrangements of the myocardial fibres and a congested vessel which indicates a healed infarction.Conclusions: The findings suggest hydro-ethanolic extract of Synedrella nodiflora (L) Gaertn generally has a low toxicity profile following a 90-day continuous oral administration in male Sprague-Dawley rats under the present laboratory conditions. However patients with renal or cardiac problems should use the plant with caution.Funding: Jointly supported by the International Foundation for Science, Stockholm, Sweden, through a grant (# F/5191-1) to Dr. Patrick Amoateng and the Office of Research, Innovation and Development (ORID), University of Ghana, Accra, Ghana, grant awarded to Dr. Patrick Amoateng (reference number: URF/6/ILG-002/2012-2013)Keywords: : Synedrella nodiflora, Sprague-Dawley rats, histopathological, haematologica

Study of Mechanical Behavious and Characterization of a Steel Joints in MIG Welding under Varying Fluxes

A lot of research work has been carried out varying welding parameters and studying its effects but rare work has been done on application of fluxes in MIG welding. Two different FeO based fluxes; Nano-flux and easy- flo flux powder were applied to the joints of 10 pcs each of 50 x 50 mm stainless and mild steel rods, galvanized and mild steel plates using MIG welding process. The samples used were welded under three categories; includes without flux (control), with nano-flux and easy-flow type-flux powder. The weld of the joints were subjected to mechanical test; hardness, tensile and morphological test; SEM and TEM examinations. The weld joints produced using the fluxes were found to have higher average values of hardness and tensile (stress and strain) of 222.73 BHN, 0.03125 and 199.97 BHN, 0.02785 respectively compare to samples without flux having lowest value of 131.36 BHN, 0.01323. The Microstructural analysis results with the use of SEM and TEM were found to have a better ordered grain structure and improved the structure, surface and pattern of the weld than those produced without flux.. The results obtained has revealed the impact of flux in MIG welding for joining steel gave better joint hardness and the structure of the weld

Novel Interconnections in Lipid Metabolism Revealed by Overexpression of Sphingomyelin Synthase-1

This study investigates the consequences of elevating sphingomyelin synthase 1 (SMS1) activity, which generates the main mammalian sphingolipid, sphingomyelin. HepG2 cells stably transfected with SMS1 (HepG2-SMS1) exhibit elevated enzyme activity in vitro and increased sphingomyelin content (mainly C22:0- and C24:0-sphingomyelin) but lower hexosylceramide (Hex-Cer) levels. HepG2-SMS1 cells have fewer triacylglycerols than controls but similar diacylglycerol acyltransferase activity, triacylglycerol secretion, and mitochondrial function. Treatment with 1 mm palmitate increases de novo ceramide synthesis in both cell lines to a similar degree, causing accumulation of C16:0-ceramide (and some C18:0-, C20:0-, and C22:0-ceramides) as well as C16:0- and C18:0-Hex-Cers. In these experiments, the palmitic acid is delivered as a complex with delipidated BSA (2:1, mol/mol) and does not induce significant lipotoxicity. Based on precursor labeling, the flux through SM synthase also increases, which is exacerbated in HepG2-SMS1 cells. In contrast, palmitate-induced lipid droplet formation is significantly reduced in HepG2-SMS1 cells. [14C]Choline and [3H]palmitate tracking shows that SMS1 overexpression apparently affects the partitioning of palmitate-enriched diacylglycerol between the phosphatidylcholine and triacylglycerol pathways, to the benefit of the former. Furthermore, triacylglycerols from HepG2-SMS1 cells are enriched in polyunsaturated fatty acids, which is indicative of active remodeling. Together, these results delineate novel metabolic interactions between glycerolipids and sphingolipids

Multi-instance contingent fusion for the verification of infant fingerprints

It is imperative to establish an automated system for the identification of neonates (1–28 days old) and infants (29 days–12 months old) through the utilisation of the readily accessible 500 ppi fingerprint reader. This measure is crucial in addressing the issue of newborn swapping, facilitating the identification of missing children, monitoring immunisation records, maintaining comprehensive medical history, and other related purposes. The objective of this study is to demonstrate the potential for future identification of infants using fingerprints obtained from a 500 ppi fingerprint reader by employing a fusion technique that combines multiple instances of fingerprints, specifically the left thumb and right index fingers. The fingerprints were acquired from babies who were between the ages of one day and six months at the enrolment session. The sum-score fusion algorithm was implemented. The approach mentioned above yielded verification accuracies of 73.8%, 69.05%, and 57.14% for time intervals of 1 month, 3 months, and 6 months, respectively, between the enrolment and query fingerprints

Spousal Desertion and Coping Strategies among Ever-married Women with Breast Cancer in Kwara and Ogun States Nigeria

AIM: The study examined the coping strategies among ever-married women with breast cancer in disrupted marriages (divorced, separated, or living-alone ever-married women) who also have limited access to social support. METHODS: Data for the study were extracted from 2015 behavioral risk factors for breast and cervical cancers in two states of Nigeria. Respondents for the study were identified through three approaches: (1) Self-reported disclosure of breast cancer, (2) informant-leading approach, and (3) outpatients located in oncological specialized health facilities and herbal homes. Formal approval was sought from the management of selected health facilities and community leaders. The respondents also voluntarily shared their experiences after obtaining their informed consent. Textual data obtained from a total of nine breast cancer survivors and patients identified and interviewed were analyzed for this study, using framework and content analytic procedures. The results were presented as excerpts and in themes. RESULTS: Results revealed two categories of respondents: (1) Breast cancer survivors/patients with husband and (2) those without husbands. Common perspectives were regrets, loss of intimacy, and determination to survive. Basic coping strategies identified are seeking medical support, resignation to fate, and involvement in religion activities. The study concludes that a partner’s support was a great yearning for survivors/patients. CONCLUSION: The authors recommended counseling on partner’s assistance among spouses, especially during sicknesses and diseases. It is also important to raise awareness of the risk factors of breast cancer and the need for constant check-ups among women in the study locations, and by extension, other sub-Saharan African countries