98 pg/mL). The results confirm that the Fe-Nx SANs can serve as a satisfactory replacement of enzyme labels, which show great potential as an ultrasensitive colorimetric immunoassay.The O3-type layered oxide cathodes for sodium-ion batteries (SIBs) are considered as one of the most promising systems to fully meet the requirement for future practical application. However, fatal issues in several respects such as poor air stability, irreversible complex multiphase evolution, inferior cycling lifespan, and poor industrial feasibility are restricting their commercialization development. Here, a stable Co-free O3-type NaNi0.4Cu0.05Mg0.05Mn0.4Ti0.1O2 cathode material with large-scale production could solve these problems for practical SIBs. MK-28 concentration Owing to the synergetic contribution of the multielement chemical substitution strategy, this novel cathode not only shows excellent air stability and thermal stability as well as a simple phase-transition process but also delivers outstanding battery performance in half-cell and full-cell systems. Meanwhile, various advanced characterization techniques are utilized to accurately decipher the crystalline formation process, atomic arrangement, structural evolution, and inherent effect mechanisms. Surprisingly, apart from restraining the unfavorable multiphase transformation and enhancing air stability, the accurate multielement chemical substitution engineering also shows a pinning effect to alleviate the lattice strains for the high structural reversibility and enlarges the interlayer spacing reasonably to enhance Na+ diffusion, resulting in excellent comprehensive performance. Overall, this study explores the fundamental scientific understandings of multielement chemical substitution strategy and opens up a new field for increasing the practicality to commercialization.The aim of this study was to evaluate the clinical-epidemiological factors associated with victims of rattlesnake envenoming in the state of Roraima, Brazil. In this location, rattlesnake accidents are caused by the subspecies Crotalus durissus ruruima. This is a prospective observational study carried out at the General Hospital of Roraima from april 2017 until july 2018. A total of 37 alleged rattlesnake victims had their medical records evaluated. However only one of them proved to be by C. d. ruruima. All individuals were residents from the savannas (lavrados) of Roraima. The town of Bonfim on the border between Brazil and Guyana had the highest occurrence of rattlesnake bites. The most affected group were males aged 13-20 years and farmers. The highest number of incidents occurred during daytime and lower limbs (feet) were the most major affected part of the body. Tourniquets were used as first aid after snake envenoming in 32.4% of victims. Out of 37 patients, 16.2% were classified as severe cases of snBrazil.

Contraceptive self-efficacy, a women’s belief about her own ability to complete the actions necessary for successful family planning, is a well-documented determinant of contraceptive use. However, there is currently no validated measure appropriate for low-resource settings. We developed and tested a new scale to measure Contraceptive Self-Efficacy among women in sub-Saharan Africa (CSESSA) using samples in Kenya and Nigeria.

The CSESSA scale was administered to women in Kenya (

 = 314) and Nigeria (

 = 414). Reliability and validity were analyzed separately by setting. Validity analysis included assessment of the area under the curve (AUC) to demonstrate predictive capability of CSESSA score for contraceptive use. Logistic regression was employed to test the relationship between CSESSA score and contraceptive use.

Item reduction resulted in 11 items in Kenya (

 = 0.90) and 10 items in Nigeria (

 = 0.93). Three domains of contraceptive self-efficacy emerged in both settings (1) husband/partner commributes a reliable, valid measure of contraceptive self-efficacy in two African countries. The CSESSA scale and subscales can be administered in research (for example for evaluation of interventions to increase contraceptive uptake) or in a clinical setting to inform and improve contraceptive counseling.This study was carried out to evaluate the nutrient composition and functional properties of dried Moringa oleifera leaves collected from two different ecological zones in Bangladesh, Joypurhat and Mymensingh. The proximate analysis revealed that M. oleifera leaves were rich in protein content, ranging from (22.99-29.36%), and low in fat, from (4.03-9.51%), fiber, from (6.00-9.60%), and ash, from (8.05-10.38%). The vitamin C content of fresh M. oleifera leaves ranged from (187.96-278.50 mg/100 g), Ca ranged from (1.322-2.645%), P ranged from (0.152-0.304 g/100 g), and K ranged from (1.317-2.025 g/100 g). The functional properties included WAC (158.00-415.00%), FC (28.30-117.65 mL/l) and FS (333.33-1000 mL/l). Together, these findings indicate that M. oleifera leaves are rich in vital phytonutrients, suggesting a promising balance of food ingredients for human and animal diets.Cybercrime incidents continue to plague economic development in the African region. Prior research indicates that millions of dollars are lost annually due to this menace. The prospects of Digital Forensics Investigation (DFI) as evident in developed countries provide hope for defeating cybercriminals. The paper assesses the effectiveness of legal infrastructure, technical mechanisms, the availability of capacity building programs, organisational infrastructure as well as the existence of cooperation mechanisms among relevant institutions in Ghana. The paper contends to the existence of legislation and mandated institutions. It concludes that, though the sector has recorded advancements over the years, the progress has been very slow leaving DFI still at an infant stage. Existing legislations are scattered and cumbersome whereas mandated institutions lack the requisite capacity. There is a need to streamline existing laws into a comprehensively harmonized legal framework. Furthermore, heavy investments must be deployed to boost the capacities of relevant institutions.