Results 61 to 70 of about 3,460,426 (309)

Biomimetic synthesis of vesicular covalent organic frameworks by gemini surfactants for in-situ enzyme cascade immobilization

Nature Communications
In nature, enzymes in biofilms often lack robustness and chemical functionality. Covalent organic frameworks (COFs) have emerged as a robust platform for enzyme immobilization, but mimicking biofilm structures for in-situ enzyme immobilization remains ...
Jin Zhang, You Li, Jiaxuan Li, Lin Zhu, Shangbin Jin   +4 more
doaj   +1 more source

Effect of Nitrogen Fertilizer on Milling Quality of Rice (Oryza sativa) [PDF]

, 1988
The effect of nitrogen fertilizer on milling quality or milling yield of rice (Oryza sativa) was tested for two cultivars, \u27Lemont\u27 and \u27Newbonnet\u27.
Dilday, R. H.
core   +2 more sources

Covalent Nitrogen Doping and Compressive Strain in MoS2 by Remote N2 Plasma Exposure

, 2016
Controllable doping of two-dimensional materials is highly desired for ideal device performance in both hetero- and p-n homo-junctions. Herein, we propose an effective strategy for doping of MoS2 with nitrogen through a remote N2 plasma surface treatment.
Addou, Rafik, Appenzeller, Joerg, Azcatl, Angelica, Cheng, Lanxia, Cho, Kyeongjae, Hinkle, Christopher L., Kim, Jiyoung, Kim, Moon J., Lu, Ning, Prakash, Abhijith, Qin, Xiaoye, Wallace, Robert M., Wang, Qingxiao, Zhang, Chenxi   +13 more
core   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

Effects of Nitrogen Fertilization on Monoterpenes of Jack Pine Seedlings and Weight Gain of Jack Pine Budworm (Lepidoptera: Tortricidae) [PDF]

, 2017
Nine-month old jack pine (Pinus banksiana) seedlings were grown in a greenhouse under four nitrogen fertilization regimes. Levels of total nitrogen and five monoterpenes in new foliage were measured. Fertilization resulted in four significantly different
Kulman, Herbert M, McCullough, Deborah G, Swedenborg, Paul D   +2 more
core   +2 more sources

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

Oxygen molecule dissociation on carbon nanostructures with different types of nitrogen doping

, 2011
Energy barrier of oxygen molecule dissociation on carbon nanotube or graphene with different types of nitrogen doping is investigated using density functional theory.
Blochl, Chan, Czerw, Feng, Genga, Gong, Henkelman, Ikeda, Iwazaki, Jang, Jinlong Yang, Kresse, Kresse, Kresse, Kundu, Liu, Luo, Lyth, Maldonado, Maldonado, Monkhorst, Niwaa, Okamoto, Perdew, Qu, Rao, Shan, Shuang Ni, Sorescu, Steele, Tang, Wang, Wang, Wang, Winter, Xiong, Yang, Yang, Yu, Yu, Yu, Zhang, Zhenyu Li, Zhu   +43 more
core   +1 more source

Probing photo-ionization: Experiments on positive streamers in pure gasses and mixtures [PDF]

, 2010
Positive streamers are thought to propagate by photo-ionization whose parameters depend on the nitrogen:oxygen ratio. Therefore we study streamers in nitrogen with 20%, 0.2% and 0.01% oxygen and in pure nitrogen, as well as in pure oxygen and argon.
, , , Aleksandrov N L, Blom P P M, Blom P P M, Bourdon A, Briels T M P, Briels T M P, Briels T M P, Cravath A M, Creyghton Y, Dubrovin D, E M van Veldhuizen, Ebert U, Ebert U, F M J H van de Wetering, Flegler E, Kao C Y Brau F Ebert U Schäfer L Tanveer S, Kashiwagi Y, Kulikovsky A A, Luque A, Morrow R, Naidis G V, Nijdam S, Nudnova M M, Ono R, Pancheshnyi S, Pancheshnyi S, Pasko V P, R Blanc, Raether H, Raizer Y P, S Nijdam, Shcherbakov Y V, Smith P W, Townsend J S E, U Ebert, van Heesch E J M, van Veldhuizen E M, van Veldhuizen E M, Winands G J J, Yi W J, Zhelezniak M B   +43 more
core   +3 more sources

pH‐mediated activation of the lysosomal arginine sensor SLC38A9

FEBS Letters, EarlyView.
Cells monitor nutrient levels via the lysosomal transporter SLC38A9 to activate the mechanistic target of rapamycin complex 1 (mTORC1). This study reveals that SLC38A9 function is regulated by pH. We identified histidine 544 as a critical pH sensor that undergoes conformational changes to control amino acid efflux from lysosomes; therefore, it ...
Xuelang Mu, Ampon Sae Her, Tamir Gonen
wiley   +1 more source

Potential uptake of dissolved organic matter by seagrasses and macroalgae [PDF]

, 2011
Dissolved organic nitrogen (DON) acts as a large reservoir of fixed nitrogen. Whereas DON utilization is common in the microbial community, little is known about utilization by macrophytes.
Bouma, Tjeerd J., Brun Murillo, Fernando Guillermo, Hendriks, Iris E., Lara, Miguel, Middelburg, Jack J., Morris, Edward P., Peralta González, Gloria, Soetaert, Karline, Van Engeland, Tom   +8 more
core   +5 more sources