Background: The management of Class II malocclusion without extractions remains a therapeutic challenge, particularly in borderline cases where esthetic concerns and dentoalveolar compensation must be carefully balanced. Adequate control of lower anterior torque plays a pivotal role in achieving stable and esthetically satisfactory outcomes while avoiding undesirable proclination. Case presentation: This case report describes the orthodontic treatment of an 18-y...

Dentistry 

We report a rare case of breast myofibroblastoma diagnosed during the third trimester of pregnancy in a 32-year-old gravida 3 para 2 woman who presented with a progressively enlarging exophytic nipple mass. Breast ultrasound revealed a heterogeneous, vascularized lesion measuring 55 × 48 mm, classified as BIRADS 4C. Ultrasound-guided core needle biopsy demonstrated a spindle-cell mesenchymal proliferation with strong desmin positivity, focal CD34 expression, and absence of epithelial marker expr...

Gynecology & Obstetrics 

The increased advocacy for the consumption of vegetables such as spinach, kale and African nightshade to promote good health has led to the use of irrigation water polluted with industrial and household waste. Use of such water results in the vegetables being contaminated with PTEs like lead, cadmium, copper, and zinc. This study investigated the health risk assessment (HRA) of heavy metals (HMs), Cu, Zn, Pb and Cd from consuming vegetables grown along River Kabuthi in Nairobi City County, where...

Biochemistry 

Objective: The purpose of this study was to investigate cephalometric norms for two Sub-Saharan populations residing in Morocco the Hausa and Somali, and to compare these norms with those of Steiner and Tweed. Method: A total of 40 lateral cephalometric radiographs from Hausa and Somali students in Casablanca area, aged 18 to 32 years, with Class I dental occlusion and facial harmony, were analyzed. Twenty cephalometric variables, comprising 14 angular and 6 lin...

Dentistry 

In the context of the digital economy, digital transformation has become a key driver for enterprises to develop new quality productivity, while the business environment plays a crucial role in influencing both digital transformation and productivity growth. However, theoretical research on the relationship between digital transformation, business environment, and new quality productivity remains limited. This study examines annual data from China’s specialized, refined, distinctive, and innovat...

Environmental Economics 

Urban sprawl is a critical issue, especially given the rapid urbanization transforming megacities worldwide. As metropolitan areas expand and often overlook sustainable development, the growth of low-density, automobile-dependent communities exacerbates several urban challenges. Residents are usually distanced from urban centers and other essential locations, and their reliance on cars increases due to limited access to efficient public transportation. Improving the efficiency of mass public tra...

Transportation Engineering 

Against the background of the integration of industry and education, the career growth of students in technical and vocational schools is deeply embedded in the dual fields of campus and enterprise, and their career adversity experience presents distinct contextual and structural characteristics. Existing research on career adversity quotient (AQ) mostly adheres to the individual trait paradigm, defining career AQ as a stable internal psychological resource while ignoring its dynamic generation ...

Educational Psychology  Educational Reform  Educational Technology 

The population size of the earthworm Eudrilus eugeniae necessary for good stabilization of cashew residues was studied in this experiment. Thus, cashew apples and leaves separately and their mixtures with cow dung were mineralized with 5, 10, 15 and 20 individuals of the African nightcrawler E. eugeniae. Total organic carbon (C), total nitrogen (N), C:N ratio, pH, total potassium (K) and total available phosphorus (P) were measured at 0, 30, 60 and 90 days of the vermicompostin...

Agricultural Science  Plant Science  Soil Science 

Background: The effective organization and delivery of refractive error services are essential for reducing avoidable visual impairment. Limited evidence exists regarding how refractive services are structured and implemented within Francophone Sub-Saharan Africa (FSSA). This study assessed the organization and delivery of refractive error services across FSSA countries. Methods: A multicountry descriptive cross-sectional survey was conducted between March and August 2020 among eye health stakeh...

Public Health  Ophthalmology 

In this paper, the analysis of a mathematical model for the control of measles using vaccination is presented. The disease reproductive number (R₀) is computed and used to derive an expression of a reduction factor in the disease spread resulting from the implementation of immunization program in the community. The Routh-Hurwitz stability conditions are adopted to analyze the model equilibria in terms of their local stability. Lyapunov function candidates are used to determine the glo...

Mathematical Analysis  Mathematics