A highly efficient catalytic asymmetric alkynylation of prochiral CH2 groups in tetrahydroisoquinoline was developed using copper catalyzed cross-dehydrogenative-coupling of sp(3) and sp C-H bonds with the assistance of a photocatalyst and visible light.
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http://dx.doi.org/10.1039/c4ob02138j | DOI Listing |
Insects
January 2025
College of Life Science and Technology, Xinjiang University, Urumqi 830017, China.
Beet crops are highly vulnerable to pest infestations throughout their growth cycle, which significantly affects crop development and yield. Timely and accurate pest identification is crucial for implementing effective control measures. Current pest detection tasks face two primary challenges: first, pests frequently blend into their environment due to similar colors, making it difficult to capture distinguishing features in the field; second, pest images exhibit scale variations under different viewing angles, lighting conditions, and distances, which complicates the detection process.
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January 2025
College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China.
Deer oil (DO) is a potentially beneficial functional oil; however, its sensitivity to environmental factors (e.g., oxygen and heat), difficulty in transport, and unfavorable taste hinder practical use.
View Article and Find Full Text PDFNat Commun
January 2025
Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea.
Phase separation of specific proteins into liquid-like condensates is a key mechanism for forming membrane-less organelles, which organize diverse cellular processes in space and time. These protein condensates hold immense potential as biomaterials capable of containing specific sets of biomolecules with high densities and dynamic liquid properties. Despite their appeal, methods to manipulate protein condensate materials remain largely unexplored.
View Article and Find Full Text PDFBioengineering (Basel)
December 2024
Software College, Northeastern University, Shenyang 110819, China.
Cervical cancer is one of the most prevalent cancers among women, posing a significant threat to their health. Early screening can detect cervical precancerous lesions in a timely manner, thereby enabling the prevention or treatment of the disease. The use of pathological image analysis technology to automatically interpret cells in pathological slices is a hot topic in digital medicine research, as it can reduce the substantial effort required from pathologists to identify cells and can improve diagnostic efficiency and accuracy.
View Article and Find Full Text PDFSci Rep
January 2025
Institute of Architectural Engineering, Shanghai Zhongqiao Vocational and Technical University, Shanghai, 201514, China.
Prefabricated buildings have a series of advantages such as high efficiency, energy savings, and environmental protection, and are being strongly promoted by the Chinese government. However, due to the late start of prefabricated buildings in China, the installation process of prefabricated components is relatively complex, leading to difficulties in quality and safety control. A novel evaluation methodology integrating the technique for order preference by similarity to ideal solution (TOPSIS) with prospect theory and interval-valued Pythagorean fuzzy numbers (IVPFNs) is proposed.
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