Results 61 to 70 of about 64,002 (271)

Nitrogen Insertion via Asymmetric Condensation and Chirality Transfer: A Stereodivergent Entry to Cyanocyclopropanes

Angewandte Chemie, EarlyView.
The synthesis of cyanocyclopropanes is achieved via asymmetric nitrogen insertion into prochiral cyclobutanones. Key mechanistic steps involve an organocatalyzed asymmetric condensation followed by chirality transfer via an intercepted Neber rearrangement.
Marlene Arnold, Jasmin Hammes, Mike Ong, Christian Mück‐Lichtenfeld, Johannes M. Wahl   +4 more
wiley   +2 more sources

Evaluation of Antioxidants and Antimicrobial Properties of Indigenous Plants: Elaeocarpus sphaericus and Ficus religiosa

International Journal of Environment, 2021
Elaeocarpus sphaericus (Rudraksha) and Ficus religiosa (Peepal) are the two different indigenous and religious plants found in Nepal. These plants are rich in antimicrobial as well as anti-inflammatory properties.
Barsha Koirala, Evance Pakuwal, Hookman Jimi Rai, Angela Shrestha   +3 more
doaj   +1 more source

ROS‐Responsive Microneedle Patches Enable Peri‐Lacrimal Gland Therapeutic Administration for Long‐Acting Therapy of Sjögren's Syndrome‐Related Dry Eye

Advanced Science, EarlyView.
A new strategy for constructing smart gel‐based MN patches is developed to overcome the insufficient drug delivery of eye drops to the lacrimal gland. The gel‐based MN patches achieved long‐acting drug release in a ROS‐responsive manner, and separable base in a temperature‐responsive manner.
Jingqing Mu, Xiangyu Ding, Yapeng Song, Baoyue Mi, Xiaolong Fang, Baihua Chen, Bin Yao, Xuguang Sun, Xiaoyong Yuan, Shutao Guo, Xia Hua   +10 more
wiley   +1 more source

Detecting External Electron Spins Using Nitrogen-Vacancy Centers [PDF]

, 2012
Near-surface nitrogen-vacancy (NV) centers have been created in diamond through low energy implantation of 15N to sense electron spins that are external to the diamond. By performing double resonance experiments, we have verified the presence of g=2 spins on a diamond crystal that was subjected to various surface treatments, including coating with a ...
arxiv   +1 more source

Orally Administered Functional Polyphenol‐Nanozyme‐Armored Probiotics for Enhanced Amelioration of Intestinal Inflammation and Microbiota Dysbiosis

Advanced Science, EarlyView.
This study presents a novel polyphenol‐nanozyme‐armored probiotic system (ECA@EcN) for enhanced treatment of inflammatory bowel disease (IBD). By integrating chitosan‐modified epigallocatechin gallate (EGCG‐CS) with gold nanozymes, the system effectively scavenges ROS, improves probiotic viability, and restores gut microbiota balance.
Yong Zhu, Ziqu Fang, Jie Bai, Longhui Wang, Jiaqing Chen, Zehua Zhang, Qiang Wang, Weiwei Sheng, Xueyin Pan, Zhenyuan Gao, Dengqiu Xu, Pengkai Wu, Beicheng Sun   +12 more
wiley   +1 more source

Comparative analysis on bioactive compounds and antioxidant activity of Algerian fenugreek (Trigonella foenum-graecum L.) and Syrian cumin (Cuminum cyminum L.) seeds

Herba Polonica, 2021
Introduction: Natural products represent a gold mine for scientists looking for compounds for the treatment of health problems and diseases with their different biological and pharmacological activities.
Bouhenni Hasna, Doukani Koula, Hanganu Daniela, Olah Neli-Kinga, Şekeroğlu Nazim, Gezici Sevgi, Spinu Marina, Niculae Mihaela   +7 more
doaj   +1 more source

Synergistic Modulating of Mitochondrial Transfer and Immune Microenvironment to Attenuate Discogenic Pain

Advanced Science, EarlyView.
Gallic acid (GA) and copper ions self‐assemble to form nanoparticles, which are then modified with mitochondrial targeting peptides and gap junction modulator. These nanoparticles scavenge mitochondrial reactive oxygen species to induce M2 polarization and enhance intercellular mitochondrial transfer.
Xinzhou Wang, Zhenyu Guo, Linjie Chen, Jing Sun, Kenny Yat Hong Kwan, Morgan Jones, Yan Michael Li, Yangyang Hu, Xueqiang Wang, Pooyan Makvandi, Xiangyang Wang, Qiuping Qian, Yunlong Zhou, Aimin Wu   +13 more
wiley   +1 more source

YBCO microwave resonators for strong collective coupling with spin ensembles [PDF]

, 2015
Coplanar microwave resonators made of 330 nm-thick superconducting YBCO have been realized and characterized in a wide temperature ($T$, 2-100 K) and magnetic field ($B$, 0-7 T) range. The quality factor $Q_L$ exceeds 10$^4$ below 55 K and it slightly decreases for increasing fields, remaining 90$\%$ of $Q_L(B=0)$ for $B=7$ T and $T=2$ K.
arxiv   +1 more source

Biomimetic Microstructured Scaffold with Release of Re‐Modified Teriparatide for Osteoporotic Tendon‐to‐Bone Regeneration via Balancing Bone Homeostasis

Advanced Science, EarlyView.
This study develops RPTH by re‐modifying teriparatide and designs a biomimetic microstructured scaffold (BMRP) loaded with RPTH to address osteoporotic tendon‐to‐bone interface repair. The BMRP restores tissue architecture by balancing bone homeostasis and remodeling the microstructure, achieving functional recovery in an osteoporotic rotator cuff tear
Chengzhong Xu, Sijie Qiu, Zhigen Yuan, Chongyin Qiu, Wenyu Xu, Jialiang Guo, Gen Wen, Shuai Liu, Wenjuan Yan, Haibing Xu, Honghao Hou, Dehong Yang   +11 more
wiley   +1 more source

Hydrogel‐Transformable Probiotic Powder for Targeted Eradication of Helicobacter pylori with Enhanced Gastric Mucosal Repair and Microbiota Preservation

Advanced Science, EarlyView.
A multifunctional, edible, and hydrogel‐transformable probiotic powder is developed based on the “bacteria‐mediated bacterial eradication” strategy. By leveraging the targeted binding capability of L. reuteri to H. pylori, this approach achieves an integrated therapeutic effect, including bactericidality, anti‐inflammation, gastric mucosal repair, and ...
Yongkang Lai, Hanchun Shen, Shige Wang, Yongliang Ouyang, Xinyuan Zhang, Bin Hu, Xiaoyi Zhang, Guisheng Li, Lizhi Xu, Jiulong Zhao   +9 more
wiley   +1 more source