Results 31 to 40 of about 327,042 (281)

Neuromuscular control of aerodynamic forces and moments in the blowfly, Calliphora vicina [PDF]

, 2004
Flies are among the most agile of flying insects, a capacity that ultimately results from their nervous system's control over steering muscles and aerodynamic forces during flight.
Balint, Claire N., Dickinson, Michael H.
core   +1 more source

1-[(1,3-Dithiolan-2-yl)methyl]-6-methyl-8-nitro-1,2,3,5,6,7-hexahydroimidazo[1,2-c]pyrimidine

Acta Crystallographica Section E, 2010
In the title compound, C11H18N4O2S2, the dithiolane ring displays an envelope conformation, the tetrahydropyrimidine ring has a conformation that is between half-chair and screw-boat, and the imidazole ring is essentially planar (r.m.s.
Zhongzhen Tian, Haijun Dong, Dongmei Li, Gaolei Wang   +3 more
doaj   +1 more source

Throttling Growth Speed: Evaluation of aux1-7 Root Growth Profile by Combining D-Root system and Root Penetration Assay

Plants, 2022
Directional root growth control is crucial for plant fitness. The degree of root growth deviation depends on several factors, whereby exogenous growth conditions have a profound impact. The perception of mechanical impedance by wild-type roots results in
Judith García-González, Jozef Lacek, Wolfram Weckwerth, Katarzyna Retzer   +3 more
doaj   +1 more source

Rapid adaptation of a polygenic trait after a sudden environmental shift

, 2017
Although a number of studies have shown that natural and laboratory populations initially well-adapted to their environment can evolve rapidly when conditions suddenly change, the dynamics of rapid adaptation are not well understood.
Jain, Kavita, Stephan, Wolfgang
core   +1 more source

Analysis for the Effect of Spatial Discretization Method on AP1000 Reactor Pressure Vessel Fluence Calculation

Science and Technology of Nuclear Installations, 2016
Maintaining the structural integrity of the reactor pressure vessel (RPV) is a critical concern related to the safe operation of nuclear power plants. To estimate the structural integrity over the designed lifetime and to support analyses for a potential
Junxiao Zheng, Bin Zhang, Shengchun Shi, Yixue Chen   +3 more
doaj   +1 more source

9-(4-Bromobutyl)-9H-carbazole

Acta Crystallographica Section E, 2012
In the title compound, C16H16BrN, the tricyclic carbazole system is essentially planar (r.m.s. deviation of all non-H atoms = 0.010 Å). The dihedral angle between the two outer carbazole rings is 1.1 (3)°.
Rodolfo Moreno-Fuquen, Carlos Grande, Rigoberto C. Advincula, Juan C. Tenorio, Javier Ellena   +4 more
doaj   +1 more source

Application of mouth section hole forming technique for directional drilling in Yangquan Mining Area

Meikuang Anquan, 2021
In the construction of long borehole in coal mine, the construction of the start of directional drilling is not paid enough attention. Especially for the installation of the ultra-deep casing(≥100 m), the casing is often not in place due to the hole ...
SUN Haoda, TANG Shengli, LIU Xusan
doaj   +1 more source

Local structure study of In_xGa_(1-x)As semiconductor alloys using High Energy Synchrotron X-ray Diffraction

, 2000
Nearest and higher neighbor distances as well as bond length distributions (static and thermal) of the In_xGa_(1-x)As ...
A. Balzarotti, A. Balzarotti, A. M. Glass, A. S. Martins, A. Sher, A. Silverman, A. Zunger, A.-B. Chen, B. E. Warren, B. J. Thijsse, C. K. Shih, C. N. J. Wagner, C. W. Dwiggins, Jr., F. A. Cunnel, F. Glas, F. Glas, F. Mohiuddin-Jacobs, I.-K. Jeong, I.-K. Jeong, J. B. Boyce, J. C. Mikkelson, J. C. Woicik, J. C. Woolley, J. G. Kirkwood, J. Hwang, J. L. Martins, J. S. Chung, J. S. Chung, K. A. Jones, K. C. Hass, L. Bellaiche, L. Pauling, L. Vegard, M. C. Schabel, M. F. Ling, M. Podgorny, M. W. Muller, O. U. Anders, P. A. Fedders, R. Serimaa, S. J. L. Billinge, S. Kycia, S. N. Ekpenuma, Th. Proffen, V. Petkov, V. Petkov, V. Petkov, W. Ruland, W. Zhonghua, Y. Cai, Y. Waseda, Z. Q. Li, Z. Wu   +52 more
core   +1 more source

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

Aspherical Surface Measurement With Multi-Directional Lateral Shearing Phase-Shifting Interferometry

IEEE Photonics Journal
Lateral shearing interferometry is an effective method for directly measuring the depth gradient of aspherical surfaces. To address the low phase reconstruction accuracy resulting from the fact that lateral shear interferometers typically obtain only two
Yahui Zhu, Ailing Tian, Hongjun Wang, Bingcai Liu   +3 more
doaj   +1 more source