Results 81 to 90 of about 421,332 (261)

Structural design and vibration characteristics of a contra-rotating drilling tool based on planetary gear trains

Frontiers in Mechanical Engineering
IntroductionTo reduce severe drill string vibration and improve drilling efficiency in deep drilling, which are often accompanied by significant energy loss.MethodThe contra- rotation of the inner and outer drill bits was facilitated by planetary gear ...
Li Qian, Liu Xuyong, Liu Huaiwei, Zhu Zhigang, Deng Hehong, Li Guangjun, Zhou Haina, Feng Xuming, Zeng Yuefei   +8 more
doaj   +1 more source

Purification and preparation of Marchantia polymorpha Auxin Response Factor 2 for phase separation studies

FEBS Open Bio, EarlyView.
We describe detailed protocols for the purification and preparation of Marchantia polymorpha Auxin Response Factor 2 (MpARF2). This protein is fused to an MBP solubility tag and an mNG fluorescent tag and is purified from Escherichia coli. The presented procedures make it possible to study MpARF2 assemblies, which could arise from phase separation ...
Bas Janssen, Robin Romein, Willy A. M. van den Berg, Simon Lindhoud, Jan Willem Borst, Carlo P. M. van Mierlo   +5 more
wiley   +1 more source

Research on the selection of rotation stopping block’s arrangement for single-type low-floor tram

机车电传动, 2022
Single-type low-floor trams have been widely used in the construction of urban light rail transit in recent years. As a common component of low-floor trams, the rotation stopping block can limit the relative swing angle range between the car body and the
XIE Yuchen, LIANG Shulin, CHI Maoru, CAI Wubin, WANG Huansheng, FAN Qingyu   +5 more
doaj  

Heterotropic regulation and negative homotropic cooperativity

FEBS Open Bio, EarlyView.
We identified a structural module common to some proteins that couple negative cooperativity with heterotropic regulation, two features that rarely coexist. These proteins are ring‐like and present an ordered asymmetry whereby noncontacting subunits are symmetric, and their tertiary structure differs from that of contacting subunits.
Veronica Morea, Francesco Angelucci, Federica Arnesano, Gianmarco Pascarella, Patrizio Di Micco, Andrea Bellelli   +5 more
wiley   +1 more source

First Metatarsal Pronation, Distal metatarsal articular angle and sesamoid reduction after Modified scarf osteotomy with single screw fixation

Foot & Ankle Orthopaedics, 2018
Category: Bunion Introduction/Purpose: Scarf osteotomy is a very popular procedure to hallux valgus surgical correction. No literature reported the correction of rotation of first metatarsal after a Scarf osteotomy.
Chao Sun MD, Zhi Wang MD
doaj   +1 more source

Adolescent differences in knee stability following computer-assisted anterior cruciate ligament reconstruction

Orthopedic Reviews, 2014
Anterior cruciate ligament (ACL) surgery is being increasingly performed in the adolescent population. Computer navigation offers a reliable way to quantitatively measure knee stability during ACL reconstruction.
Melissa A. Christino, Bryan G. Vopat, Gregory R. Waryasz, Alexander Mayer, Steven E. Reinert, Robert M. Shalvoy   +5 more
doaj   +1 more source

Structural and biochemical insights into the thermostable esterase Ta0887 from Thermoplasma acidophilum

FEBS Open Bio, EarlyView.
In this study, a novel esterase from the thermoacidophilic archaeon Thermoplasma acidophilum was biochemically and structurally characterized. Our results demonstrate that Ta0887 is a highly thermostable esterase that preferentially hydrolyzes p‐nitrophenyl hexanoate and possesses an α‐helical cap domain that likely contributes to its substrate ...
Alejandro Delgado‐Rey, Miriam Livier Llamas‐García, Gabriela M. Montero‐Morán, Leticia Santos, Samuel Lara‐González   +4 more
wiley   +1 more source

Output and rotation frequency of single-shaft gas turbine

RUDN Journal of Engineering Research, 2009
The equation (7) gives dependence between single-shaft gas turbine output and rotation frequency.
Yu A Antipov, I A Barsky, I K Shatalov
doaj  

Broadband High-Precision Faraday Rotation Spectroscopy with Uniaxial Single Crystal CeF₃ Modulator

Photonics
We present a low-noise (
John H. Lacy, Gabriel E. Patenotte, Abby C. Kinney, Protik K. Majumder   +3 more
doaj   +1 more source

A minimal cellulosome‐like system in Cellulosilyticum lentocellum

FEBS Open Bio, EarlyView.
Cellulose‐degrading bacteria typically use cellulosomes, large multi‐enzyme complexes on a scaffold protein. In Cellulosilyticum lentocellum, we characterise a far smaller arrangement, a single scaffold bound to one cellulase through a single cohesin‐dockerin interaction.
John Allan, Amias Alstrom‐Moore, Gary W Black   +2 more
wiley   +1 more source