Larvicidal and Oviposition Activity of Commercial Essential Oils of Ledeb., (Blanco) Benth., L. and Their Combinations Against .

is a vector responsible for the transmission of various arboviruses and is considered by the World Health Organization to be one of the main public health problems in the world. This study evaluated the larvicidal and oviposition activity of essential oils from , and and their formulations. Chromatographic analysis by GCMS identified a total of 28, 52 and 18 compounds for the oils of the species , and , respectively.

Recent advances in the study of mercury biogeochemistry in Arctic permafrost ecosystems.

Permafrost predominates in polar and high mountain regions, encompassing nearly 15 % of the exposed land in the Northern Hemisphere. It denotes soil or rock that remains at or below 0 °C for the duration of at least two consecutive years. These frozen soils serve as a barrier to contaminants that are stored and accumulated in permafrost over extended periods of time.

The Psychodidae (Diptera) of Fernando de Noronha, Brazil, with a records overview of volcanic islands fauna.

The family Psychodidae (Diptera) is recorded for the oceanic archipelago of Fernando de Noronha, represented by two genera and three species: Clogmia albipunctata Williston, Psychoda buxoides Quate, P. savaiiensis Edwards, as well as an undetermined species belonging to the tribe Pericomaini. The fauna of Psychodidae in Fernando de Noronha is remarkably inferior to the Brazilian continental fauna, including species known as cosmopolitan due to the introduction into the most varied environments by human action.

Patterns of cognitive decline across different multiple sclerosis clinical courses.

Background: It is still unclear whether patients with progressive MS (PMS) present a distinct pattern of cognitive impairment (CI) and different trajectories of cognitive and clinical decline compared to patients with relapsing-remitting MS (RRMS) with similar age. In addition, the role of reserve (cognitive and cerebral) in cognitive decline in the different forms of MS is not fully understood, and some studies suggest that its effects reduce in the progressive forms.

Objective: To assess the trajectories of cognitive decline in RRMS and PMS patients with similar age, also evaluating the predictive power of baseline clinical and MRI features on cognitive outcomes at follow-up.