Results 61 to 70 of about 27,701 (306)

Welded repairs of punctured thin-walled aluminum pressure vessels [PDF]

, 1969
Punctures in thin-walled aluminum pressure vessels are repaired by plugging the hole with an interference-fit disc and welding the unit. The repaired vessels withstood test pressures in excess of vessel ultimate design values for 2-, 4-, and 6-inch holes
Jones, D. J.
core   +1 more source

KLK7 overexpression promotes an aggressive phenotype and facilitates peritoneal dissemination in colorectal cancer cells

FEBS Open Bio, EarlyView.
KLK7, a tissue kallikrein‐related peptidase, is elevated in advanced colorectal cancer and associated with shorter survival. High KLK7 levels in ascites correlate with peritoneal metastasis. In mice, KLK7 overexpression increases metastasis. In vitro, KLK7 enhances cancer cell proliferation, migration, adhesion, and spheroid formation, driving ...
Yosr Z. Haffani, Tobias Dreyer, Meriem Naim, Rea Lo Dico, Natalia A. Ignatenko, Viktor Magdolen, Dalila Darmoul   +6 more
wiley   +1 more source

The Influence of Confining Stresses on Rock Fragmentation, Thrust Force, and Penetration Energy in Sandstone Indentation Tests Using Disc Cutters

Advances in Civil Engineering, 2021
Hard rock Tunnel Boring Machines (TBMs) engaging disc cutters as cutting tools have been employed in considerable underground coal mines to accommodate the requirement of more stone drivage as operations are going deeper.
Gaofeng Wang, Ting Ren, Gaolei Zhu
doaj   +1 more source

Calculation of the parameters for disc saws that use method of running for toolmaking with uneven tooth pitch [PDF]

, 2014
Розглянуто особливості розрахунку кутового кроку зубів інструменту другого порядку, а так само їх розташування, для обробки заготовок з нерівномірним кроком зубів.
Parnenko, V., Парненко, В. С.
core  

Notes on the Nests of \u3ci\u3eAugochloropsis metallica fulgida\u3c/i\u3e and \u3ci\u3eMegachile mucida\u3c/i\u3e in Central Michigan (Hymenoptera: Halictidae, Megachilidae) [PDF]

, 2017
Notes on the nesting biology of two ground-nesting species are provided from Central Michigan. A single nest of Augochloropsis metallica fulgida was excavated on 12 July 2014 in Shiawassee County. There were two female nest inhabitants.
Gibbs, Jason
core   +2 more sources

Nuclear pore links Fob1‐dependent rDNA damage relocation to lifespan control

FEBS Open Bio, EarlyView.
Damaged rDNA accumulates at a specific perinuclear interface that couples nucleolar escape with nuclear envelope association. Nuclear pores at this site help inhibit Fob1‐induced rDNA instability. This spatial organization of damage handling supports a functional link between nuclear architecture, rDNA stability, and replicative lifespan in yeast.
Yamato Okada, Mina Iwaki, Kyosuke Hagiri, Rei Izumi, Masahiko Harata, Chihiro Horigome   +5 more
wiley   +1 more source

Visual Recovery Reflects Cortical MeCP2 Sensitivity in Rett Syndrome

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Rett syndrome (RTT) is a devastating neurodevelopmental disorder with developmental regression affecting motor, sensory, and cognitive functions. Sensory disruptions contribute to the complex behavioral and cognitive difficulties and represent an important target for therapeutic interventions.
Alex Joseph Simon, Nathalie Picard, Valeria d'Andrea, Enchi Chang, Joseph Leffler, Eleonora Centofante, Matthew Taylor, Francesca Bardi, Francesca Cavicchiolo, Takao K. Hensch, Stefano Panzeri, Chinfei Chen, Michela Fagiolini   +12 more
wiley   +1 more source

Research of Chamfering Tooth Crest of Spiral Bevel Gear based on Disc Cutter

Jixie chuandong, 2018
In order to solve low accuracy and inefficiency of tooth crest chamfering for spiral bevel gear,a method of tooth crest chamfering by using disc cutter is proposed. Gear solid model with the chamfering feature is established,crest lines are used as sweep
Wei Wei, Zhang Lianhong
doaj  

Rapid assembly bolt connection design method for TBM disc cutter box based on AHP

Advances in Mechanical Engineering
With the TBM disc cutter box as the subject of investigation, this study addresses the intricate and labor-intensive nature of the assembly process in TBM disc cutter box welding assembly.
Chunya Sun, Xuan Zhao, Yanqiu Xiao, Guangzhen Cui, Lianhui Jia, Shengquan Wu, Wei Zhang, Baoping Shang   +7 more
doaj   +1 more source

From lab forces to field lifespans: How rock and operating parameters govern TBM disc cutter wear

Rock Mechanics Bulletin
Tunnel boring machines (TBMs) are considered a reliable and fast method for boring long tunnels. However, the wear and failure of disc cutters in hard rock influences the efficiency of equipment, ultimate timeline, and project cost. Therefore, estimating
Ehsan Mohtarami, Amin Hekmatnejad, Georg H. Erharter, Alvaro Pena   +3 more
doaj   +1 more source