Results 61 to 70 of about 3,419,395 (293)

A Magneto‐Mechanically Activated Nerve Guidance Conduit Promotes Peripheral Nerve Regeneration via TIMP1‐Mediated Membrane Tension Transfer

Advanced Functional Materials, EarlyView.
This study presents a magneto‐mechanical strategy that incorporates FP@MSCs into an aligned PCL/GelMA nerve guidance conduit. Magnetic stimulation increases membrane tension in FP@MSCs, triggering cytoskeletal remodeling, Schwann cell‐like differentiation, and TIMP1 secretion. TIMP1 activates ITGB1/CD63–FAK signaling in NE‐4C cells, increasing membrane
Xinyu Zhu, Yumin Wu, Xiang Gao, Tianlu Wang, Wanting Jia, Xueying Mei, Huanzhong Ji, Zongxi Wu, Yujie Liang, Xiang Li, Kan Li, Jingyuan Li, Guangsen Zheng, Guiqing Liao, Siyong Gao   +14 more
wiley   +1 more source

Lowering the Mo limit for nitrogen fixation by Mo-nitrogenase

Communications Earth & Environment
Archean ocean marine primary productivity may have been limited by biologically available nitrogen. Due to low molybdenum abundances, early biological nitrogen fixation is thought to have relied on alternative nitrogenases that incorporate vanadium or ...
Zackry Stevenson, Dylan L. Schultz, Michelle Chamberlain, Kathryn Rico, Ariel Anbar, Anne E. Dekas, Elizabeth D. Swanner   +6 more
doaj   +1 more source

Promoting black oat and ryegrass growth via Azospirillum brasilense inoculation after corn and soybean crop rotation [PDF]

Emirates Journal of Food and Agriculture
Inadequate management of nitrogen fertilization, due to high costs, compromises the nutrition and productivity of winter forage plants, highlighting the need to adopt sustainable alternatives, such as using nitrogen-fixing bacteria.
Vinícius dos Santos Cunha, Marcos da Silva Brum, André Brugnara Soares, Evandro Ademir Deak, Léo Antônio Limberger Speth, Thomas Newton Martin   +5 more
doaj   +3 more sources

Nitride MXenes Beyond Carbides: Bridging the Gap Between Computational Prediction and Experimental Realization

Advanced Functional Materials, EarlyView.
Nitride MXenes remain constrained by a persistent gap between computational prediction and experimental realization. This Review identifies the thermodynamic, kinetic, and chemical barriers limiting their synthesis, critically evaluates emerging fabrication routes, and proposes a multidimensional computational‐experimental framework to accelerate the ...
Naresh Varnakavi, Masoud Soroush
wiley   +1 more source

Comparison of two soil tillage treatments for winter barley-soybean growing based only on residual nitrogen after soybean [PDF]

, 2008
The winter barley crop growing has not been adequately researched regarding soil tillage systems, especially in crop rotation with the soybean, both crops gaining importance as food or fodder.
Jug, I., Samota, D., Stipesevic, B., Babic, D., Kratovalieva, S., Birkás, Márta, Jug, D.   +6 more
core   +1 more source

Improving the quantification of global free-living and symbiotic nitrogen fixation in natural terrestrial ecosystems: present-day estimates and 21st century projections

Environmental Research Letters
Biological nitrogen fixation (BNF) is a critical natural nitrogen input that sustains terrestrial carbon cycling, yet it remains poorly represented in terrestrial ecosystem models (TEMs).
Ye Yuan, Qianlai Zhuang, Bailu Zhao, Licheng Liu   +3 more
doaj   +1 more source

Rare‐Earth–Functionalized Carbon Dot Hydrogels as Mechanically Robust Antibacterial Wound Dressings

Advanced Healthcare Materials, EarlyView.
The schematic depicts a dynamically cross‐linked PVA hydrogel network in which reversible borate ester bonds and hydrogen‐bonding interactions integrate lanthanum‐doped carbon dots (La‐CDs) and dipotassium glycyrrhizinate (DPG) to form a mechanically robust, multifunctional matrix.
Shih‐Han Tsai, Ramadhass Keerthika Devi, Muthusankar Ganesan, Guo‐Ping Chang Chien, Chun Che Lin   +4 more
wiley   +1 more source

Depth-dependent variability of biological nitrogen fixation and diazotrophic communities in mangrove sediments

Microbiome, 2021
Background Nitrogen-fixing prokaryotes (diazotrophs) contribute substantially to nitrogen input in mangrove sediments, and their structure and nitrogen fixation rate (NFR) are significantly controlled by environmental conditions.
Zhiwen Luo, Qiuping Zhong, Xingguo Han, Ruiwen Hu, Xingyu Liu, Wenjun Xu, Yongjie Wu, Weiming Huang, Zhengyuan Zhou, Wei Zhuang, Qingyun Yan, Zhili He, Cheng Wang   +12 more
doaj   +1 more source

Role of Hydroxylamine in Biological Fixation of Nitrogen [PDF]

Nature, 1949
THE position of hydroxylamine as an intermediate in the nitrogen fixation process has become increasingly doubtful as a result of recent studies1,2. No direct attempts have been made, however, to find the effect of hydroxylamine on nitrogen fixation. An application of the isotope tracer method to this problem is being made in these laboratories, using ...
B A, PETHICA, E R, ROBERTS, E R S, WINTER   +2 more
openaire   +2 more sources

Water‐Activated Phospholipid Phase‐Separation Gel as an Immunomodulatory Anti‐Adhesion Barrier for Postoperative Adhesion Prevention

Advanced Healthcare Materials, EarlyView.
A water‐activated phospholipid phase‐separation gel is repurposed as a drug‐free surgical barrier for postoperative adhesion prevention. Propylene glycol promotes rapid lamellar gel reinforcement, prolonged local retention, and tissue coverage, while phosphatidylcholine‐mediated immunomodulation suppresses inflammatory and fibrotic responses. This dual‐
Jong‐Ju Lee, Yulseung Sung, Yeji Kim, Heesang Yang, Suyeon Pyo, Byeol Yun, Sung‐Joo Hwang   +6 more
wiley   +1 more source