Results 61 to 70 of about 454 (211)

A distinct gene expression mechanism for d‐amino acid utilization in hyperthermophilic archaeon Pyrococcus horikoshii

The FEBS Journal, EarlyView.
The genes PH0137, PH0138, and PH0140 form a cluster in the genome of Pyrococcus horikoshii. The PH0140 gene encodes a transcription factor identified as a d‐amino acid‐responsive regulatory protein (DARP). In feast mode, l‐Ile‐bound DARP binds to the promoter and represses transcription of PH0137 and PH0138. In famine mode, DARP binds to d‐allo‐Ile and
Ryushi Kawakami, Tomoki Kawase, Taira Uehara, Haruhiko Sakuraba, Tomohiko Matsuzawa, Junji Hayashi, Toshihisa Ohshima   +6 more
wiley   +1 more source

Influence of Quiet Spike on Supersonic Transport for Low Boom Effect

Xibei Gongye Daxue Xuebao, 2019
One of the biggest technical challenges of supersonic flight is the mitigation of sonic boom. To deal with this problem, the Gulfstream Aerospace Corporation came up with the spike concept, and it showed to be efficient.

doaj   +1 more source

Structural and thermodynamic analyses of a novel β‐1,2‐glucan binding mode in the ABC transporter solute‐binding protein Chy400_4166 from Chloroflexus aurantiacus

The FEBS Journal, EarlyView.
Cyclic β‐1,2‐glucan (CβG)‐associated solute‐binding protein of type I ABC transporter was originally identified in Chloroflexus aurantiacus, a phototrophic bacterium. Crystal structures in complex with CβGs revealed unique binding modes that are fundamentally distinct from that of the short β‐1,2‐glucooligosaccharides‐binding protein.
Kazuya Kato, Tatsuya Kaneko, Rintaro Hirayama, Nobukiyo Tanaka, Hiroyuki Nakai, Hidetaka Torigoe, Masahiro Nakajima   +6 more
wiley   +1 more source

Evaluation of Aerodynamic and Sonic Boom Performance of Supersonic Transport Aircrafts with Multiple Wing Configurations

Aerospace
In this study, two-dimensional airfoil shapes obtained in aerodynamic optimizations are converted to three-dimensional wing models and then their aerodynamic and sonic boom performance are evaluated. The airfoil shapes analyzed are the diamond, Busemann,
Wataru Yamazaki, Shu Ishida
doaj   +1 more source

Wee1 kinase differentially regulates maize CDKA2;1a and CDKB1;1

The FEBS Journal, EarlyView.
In eukaryotes, Wee1 kinase inhibits the kinase activity of CDK/Cyc complexes through phosphorylation of a conserved residue in the CDK moiety. Wee1 is also present in plants, but has been scarcely studied. We have studied maize Wee1 regulation of CDKA/CycD2;2a or CDKB/CycD2;2a complexes.
Mingyar N. López‐Hernández, Estefany D. Guerrero‐Molina, Ulises Martínez‐Ortega, Aurora Lara‐Núñez, Jorge M. Vázquez‐Ramos   +4 more
wiley   +1 more source

A Numerical Approach for the Integration of Sonic Boom Requirements into the Matching Chart

Aerospace
The Matching Chart is a well-established tool in conceptual and preliminary aircraft design, providing a graphical representation of performance requirements based on wing loading (W/S) and thrust-to-weight ratio (T/W).
Samuele Graziani, Leonardo Ialongo, Davide Ferretto   +2 more
doaj   +1 more source

Modern problems of aircraft aerodynamics

Advances in Aerodynamics, 2019
The article represents the discussion of several separate directions of investigations, which are performed by TsAGI flight vehicles aerodynamics specialists at the time.
Sergey L. Chernyshev, Sergey V. Lyapunov, Andrey V. Wolkov   +2 more
doaj   +1 more source

Serotypic and Genomic Diversity of Vibrio anguillarum in Rainbow Trout Farms in Turkey: Implications for Vibriosis Control and Vaccine Candidate Selection

Journal of Fish Diseases, EarlyView.
ABSTRACT Outbreaks of vibriosis caused by Vibrio anguillarum are a persistent constraint on rainbow trout (Oncorhynchus mykiss) aquaculture. However, information on the population structure of field strains in Turkey has been lacking. Here, we report the first systematic serotypic, proteomic, and genomic characterization of 23 V.
Soner Altun, Muhammed Duman, Jesús L. Romalde, Nihed Ajmi, Gorkem Tasci, Cuneyt Ozakin, Nazmiye Ulku Tuzemen, Bekir Akça, Sebahattin Ergün, Sevdan Yılmaz, Izzet Burcin Saticioglu   +10 more
wiley   +1 more source

Effects of Algae β‐Glucan Supplementation on the Performance and Intestinal Immune System of Healthy Weaned Piglets

Journal of Animal Physiology and Animal Nutrition, EarlyView.
ABSTRACT While β‐glucans from plants and yeasts have been extensively studied in weaned piglets, studies examining algae β‐glucans are scarce. Thus, the present study aimed to examine the effects of feeding algae β‐glucan in weaned piglets. Male, 21‐day‐old, weaned crossbred piglets were allotted to three experimental groups, which were fed either an ...
Johanna O. Buckenberger, Felizitas Gutöhrlein, Manfred Henrich, Erika Most, Rose Whelan, John K. Htoo, Robert Ringseis, Klaus Eder   +7 more
wiley   +1 more source

Impact of reduced sonic boom exposure on psychophysical and cognitive performance for simulated booms presented in a realistic indoor environment

Acta Acustica
This study aimed to quantify, in situations representative of the daily life of European citizens, the effects of sonic boom exposure on human responses, in the case of a new generation of supersonic commercial aircraft that should emit a reduced ...
Marmel Frédéric, Cretagne Léo, Thuong Linh-Thao, Coulouvrat François, Fritz Claudia   +4 more
doaj   +1 more source