Efficient Extraction, Chemical Characterization, and Bioactivity of Essential Oil From Pine Needles.

Introduction: Pine needles are a rich source of bioactive compounds, and there are few reports on the extraction and identification of active substances in various types of pine needles.

Objectives: The objective of this study is to enhance the efficiency and yield of pine needle essential oil extraction by employing an innovative ultrasonic-assisted salt-out hydrodistillation technology. It also aims to establish a correlation between gas chromatography-mass spectrometry (GC-MS) and electronic nose (E-nose) to distinguish essential oils from Cedrus deodara, Pinus thunbergii, Pinus massoniana, and Pinus koraiensis.

δN and δC cycles in narwhal () embedded teeth reveal seasonal variation in ecology and/or physiology.

Monitoring Arctic marine mammals in response to rapid climate change requires reliable longitudinal data. To obtain such data is challenging, but sequential measurements of stable isotopes (SI) from metabolically inert tissues like dentine allow for chronological reconstruction of SI data that can provide insights into whale life history, behaviour and physiology. This study examined dentine samples from narwhal embedded canines to reconstruct individual SI profiles and assess intra-annual variation in δN and δC.

Developing an advanced course of vaccinology in middle-income countries: The case of China.

•We provide the Chinese Vaccinology Course was the only national advanced vaccinology training course in China, in response to the global call to improve vaccine capacity and meet local needs.•To address the challenges for both the development of the country as well as world sustainability and to address the major needs of the country and for the lives and health of the people.•Science and technology has provided strong support in controlling infection, developing vaccines and promoting drug research and development (R& D), CNVAC provide model problems and solutions for the research community.

Applying virtual reality to sail education: an innovative strategy to enhance knowledge learning for student novices.

Background: Sailing has been proved beneficial for physical and mental health promotion, which has made it a prevalent sport among children and adolescents. Nevertheless, the existing pedagogical strategies cannot satisfy students' demands for learning. To bridge this gap, virtual reality (VR) is considered an innovative approach to addressing the challenges in sailing education.

Asymmetric Synthesis of S(IV)-Stereogenic Sulfinimidate Esters by Sulfinamide Activation.

Catalyst-controlled approaches for the synthesis of S-stereogenic compounds have propelled significant advancements in asymmetric synthetic chemistry. In contrast, control over S-heteroatom (e.g.