Results 61 to 70 of about 19,281 (195)

Machine learning‐driven advances in carbon‐based quantum dots: Opportunities accompanied by challenges

Responsive Materials, EarlyView.
Machine learning provides a unifying framework to connect structure, fluorescence properties, and applications of carbon‐based quantum dots. This review highlights how data‐driven strategies enable fluorescence regulation, reveal underlying mechanisms, and accelerate the rational design of functional carbon dots.
Liangfeng Chen, Siwei Yang, Xiangqian Cui, Ziheng Liu, Hang Wang, Yongqiang Li, Peng He, Miao Wang, Guqiao Ding   +8 more
wiley   +1 more source

A-Ring-Modified Triterpenoids and Their Spermidine–Aldimines with Strong Antibacterial Activity

Molbank, 2019
Synthesis of A-ring-modified lupane, oleanane and ursane type triterpenoid conjugates with spermidine through an aldimine linkage or diethylentriamine via an amide bond is described.
Oxana B. Kazakova, Jean Michel Brunel, Elmira F. Khusnutdinova, Sophie Negrel, Gulnara V. Giniyatullina, Tatyana V. Lopatina, Anastasiya V. Petrova   +6 more
doaj   +1 more source

Peroxiredoxin 4 Involved in Spermatogenesis by Affecting Oxidative Stress and Ferroptosis

Andrology, EarlyView.
ABSTRACT Background The main functions of testes are sperm production and androgen secretion in testicular befitting microenvironment. Excessive level of the reactive oxygen species (ROS) from metabolism and cellular events can lead to oxidative stress (OS) and ferroptosis, which injure the functions of mitochondria and endoplasmic reticulum (ER) of ...
Shuning Yuan, Nini Wei, Weiwei Ma, Mengting Hu, Bei Zhang, Li Gao, Chao Gao, Xiaoyu Yang, Yan Meng, Jiayin Liu, Yugui Cui   +10 more
wiley   +1 more source

Phytochemical Study of Aerial Parts of Leea asiatica

Molecules, 2019
Leea asiatica (L.) Ridsdale (Leeaceae) is found in tropical and subtropical countries and has historically been used as a traditional medicine in local healthcare systems. Although L.
Hyun Woo Kil, Taewoong Rho, Kee Dong Yoon   +2 more
doaj   +1 more source

Fecal Steroids as Tracers of Human Population and Waste Management Practices at the Ancient Maya City of Ucanal, Guatemala

Archaeometry, EarlyView.
ABSTRACT Geochemical data compiled from dried sediments from three water reservoirs at the ancient Maya city of Ucanal, Petén, Guatemala, reveal low to undetectable fecal biomarker concentrations. These low concentrations may be the result of the aerobic decay of sterols combined with well‐managed waste disposal practices.
Jean D. Tremblay, Peter M. J. Douglas, Christina T. Halperin, Yves Gélinas   +3 more
wiley   +1 more source

Extraction of triterpenoids from Carya cathayensis Sarg. husks and enhancement of their antibacterial properties by loading into chitosan aerogels

Food Innovation and Advances
Carya cathayensis Sarg. is widely cultivated in China as a specialized nut crop, and its discarded husks (outer pericarp) are rich in triterpenoids with known antibacterial properties.
Haixin Sun, Xinya Gu, Baozhu Shi, Tianhua Huang, Junlai Nian, Jidong Sun, Tarun Belwal, Liezhou Zhong, Benu Adhikari, Zisheng Luo   +9 more
doaj   +1 more source

Triterpenóides tipo cicloartano de própolis de Teresina - PI Cycloartane triterpenoids of propolis from Teresina - PI

Química Nova, 2005
The chemical study of the propolis produced in Teresina city, state of Piaui, resulted in the identification of six cycloartane triterpenoids: isomangiferolic acid, 24-methylenecycloartane-3beta,26-diol, mangiferolic acid, mangiferonic acid, ambonic acid
Maria do Socorro Sousa da Silva, Antônia Maria das Graças Lopes Citó, Mariana H. Chaves, José Arimatéia Dantas Lopes   +3 more
doaj   +1 more source

Novel approaches for drug development against chronic primary pain: A systematic review

British Journal of Pharmacology, EarlyView.
Abstract Chronic primary pain (CPP) persisting for more than 3 months, associated with significant emotional distress without any known underlying cause, is an unmet medical need. Traditional or adjuvant analgesics do not provide satisfactory pain relief for a great proportion of these patients.
Valéria Tékus, Éva Borbély, Andreas Goebel, Ralf Baron, Zsófia Hajna, Zsuzsanna Helyes   +5 more
wiley   +1 more source

Development of a Tandem Mass Spectral Library for the Detection of Triterpenoids in Plant Metabolome Based on Reference Standards

Plants
Plant triterpenoids represent a diverse group of secondary metabolites and are thought to be valuable for therapeutic applications. For drug development, lead optimization, better knowledge of biological pathways, and high-throughput detection of ...
Bibi Zareena, Syed Usama Y. Jeelani, Adeeba Khadim, Arslan Ali, Jalal Uddin, Satyajit D. Sarker, Matthias Rainer, Shaden A. M. Khalifa, Hesham R. El-Seedi, Muhammad Ramzan, Syed Ghulam Musharraf   +10 more
doaj   +1 more source

Triterpenoid profile of fruit and leaf cuticular waxes of edible honeysuckle Lonicera caerulea var. kamtschatica

Acta Societatis Botanicorum Poloniae, 2017
Edible honeysuckle (honeyberry) Lonicera caerulea is becoming popular as a novel berry crop with several useful features such as early fruit ripening and exceptional hardiness, particularly resistance to pests and diseases as well as severe frosts in ...
Rafał Becker, Cezary Pączkowski, Anna Szakiel   +2 more
doaj   +1 more source