Results 91 to 100 of about 124,422 (325)

Cold seep nitrogen fixation and its potential relationship with sulfur cycling

Microbiology Spectrum
Dinitrogen (N2) fixation is a crucial source of bioavailable nitrogen in carbon-dominated cold seep systems. Previous studies have shown that diazotrophy is not necessarily dependent on sulfate-dependent anaerobic oxidation of methane for energy, and ...
Qiumei Quan, Jiaxing Liu, Xiaomin Xia, Si Zhang, Zhixin Ke, Minxiao Wang, Yehui Tan   +6 more
doaj   +1 more source

Engineering Nitrogen Fixation Activity in an Oxygenic Phototroph

mBio, 2018
Biological nitrogen fixation is catalyzed by nitrogenase, a complex metalloenzyme found only in prokaryotes. N2 fixation is energetically highly expensive, and an energy-generating process such as photosynthesis can meet the energy demand of N2 fixation.
Deng Liu, Michelle Liberton, Jingjie Yu, Himadri B. Pakrasi, Maitrayee Bhattacharyya-Pakrasi   +4 more
doaj   +1 more source

Micropillar‐Engineered Hybrid Adhesive Patch for Surface‐Conformable and Directional Adhesion

Advanced Materials Technologies, EarlyView.
This work presents a surface‐conformable hybrid adhesive integrating height‐optimized hexagonal micropillars with open‐rectangular cuts. The micropillars enhance rough‐surface contact and microscale crack arrest, while the cuts guide and reverse interfacial cracks for strong and directional adhesion. The multiscale architecture achieves robust pull‐off
Seongjin Park, Dong Kwan Kang, Haejin Bae, Ho‐Sup Jung, Hoon Eui Jeong   +4 more
wiley   +1 more source

Nitrification amplifies the decreasing trends of atmospheric oxygen and implies a larger land carbon uptake [PDF]

, 2007
[1] Atmospheric O-2 trend measurements are used to partition global oceanic and land biotic carbon sinks on a multiannual basis. The underlying principle is that a terrestrial uptake or release of CO2 is accompanied by an opposite flux of O-2.
Bopp, L, Ciais, P, Manning, AC, Reichstein, M, Zaehle, S   +4 more
core   +2 more sources

Graphene‐Interfaced Stretchable Sweat Patch for Multiplexed Electrochemical Monitoring of IL‐6, Glucose, and Calcium Ions

Advanced Materials Technologies, EarlyView.
Flexible sweat sensor patch integrating graphene‑interfaced gold microelectrodes functionalized with bio‑receptors and ion‑selective membrane, coupled with a capillary‑driven microfluidic layer and portable potentiostat electronics for multiplexed monitoring of inflammatory, metabolic, and electrolyte biomarkers in microliter sweat volumes.
Roomia Memon, Ali Tufani, Süleyman Çelik, Javed H. Niazi, Anjum Qureshi   +4 more
wiley   +1 more source

Response of Snap Bean Cultivars to Rhizobium Inoculation under Dryland Agriculture in Ethiopia

Agronomy, 2015
High yield in snap bean (Phaseolus vulgaris L.) production requires relatively high nitrogen (N) inputs. However, little information is available on whether the use of rhizobial inoculants for enhanced biological dinitrogen fixation can provide adequate ...
Hussien Mohammed Beshir, Frances L. Walley, Rosalind Bueckert, Bunyamin Tar'an   +3 more
doaj   +1 more source

Input of nitrogen from N2 fixation to northern grasslands [PDF]

, 2005
Forage legumes form N2-fixing symbioses with rhizobia and may thus make substantial contributions to the N pool in grasslands. However, to optimize their use as sources of N, it is important to elucidate the effects of management factors that influence ...
Carlsson, Georg
core  

Genome sequence of the Ornithopus/Lupinus-nodulating Bradyrhizobium sp. strain WSM471 [PDF]

, 2013
Bradyrhizobium sp. strain WSM471 is an aerobic, motile, Gram-negative, non-spore-forming rod that was isolated from an effective nitrogen-(N-2) fixing root nodule formed on the annual legume Ornithopus pinnatus (Miller) Druce growing at Oyster Harbour ...
Ardley, Julie, Bruce, David, Chen, I-Min, De Meyer, Sofie, Detter, Chris, Goodwin, Lynne, Han, Cliff, Han, James, Howieson, John, Huntemann, Marcel, Ivanova, Natalia, Kyrpides, Nikos C, Lu, Megan, Markowitz, Victor, Mavromatis, Konstantinos, Melino, Vanessa, Ninawi, Mohamed, O'Hara, Graham, Pagani, Ioanna, Pati, Amrita, Reeve, Wayne Gerald, Tapia, Roxanne, Terpolilli, Jason, Tian, Rui, Tiwari, Ravi, Wei, Chia-Lin, Woyke, Tanja, Yates, Ronald   +27 more
core   +1 more source

Near‐Infrared‐Driven Metal–Organic Frameworks‐Based Nanorobots for Controlled Photothermal‐Chemical Therapy Synergistic Induction of Cancer Cell Death

Advanced Robotics Research, EarlyView.
To achieve efficient cancer cell death, a bowl‐shaped PDA@UiO‐66@DOX nanorobot drug‐delivery nanoplatform was developed. Near‐infrared irradiation not only drives the nanorobot to exhibit self‐thermophoretic motion and elevates temperature but also triggers Doxorubicin (DOX) release via hyperthermia, enhancing cancer cells uptake of DOX and thereby ...
Tong Lin, Jie Yang, Yongcheng Li, Yuepeng Cai, Xiaosong Zhou, Ting Chen, Renfeng Dong   +6 more
wiley   +1 more source

N2-fixation and residual N effect of four legume species and four companion grass species [PDF]

, 2011
Inclusion of forage legumes in low-input forage mixtures improves herbage production and soil fertility through addition of nitrogen (N) from N2-fixation.
Eriksen, Jørgen, Pirhofer-Walzl, Karin, Rasmussen , Jim, Søegaard, Karen   +3 more
core   +1 more source