Results 61 to 70 of about 7,465,089 (357)

miRNA‐29 regulates epidermal and mesenchymal functions in skin repair

open access: yesFEBS Letters, EarlyView.
miRNA‐29 inhibits cell‐to‐cell and cell‐to‐matrix adhesion by silencing mRNA targets. Adhesion is controlled by complex interactions between many types of molecules coded by mRNAs. This is crucial for keeping together the layers of the skin and for regenerating the skin after wounding.
Lalitha Thiagarajan   +10 more
wiley   +1 more source

Research on influence law of circuit parameters on heating characteristics of graphite heating elements

open access: yesHangkong gongcheng jinzhan
Circuit parameters are the decisive factors for the heating performance of graphite heating elements,and the research on the influence of circuit parameters is the basis for the design of high-performance and high-reliability graphite heaters.
LI Junpeng   +4 more
doaj   +1 more source

A Review of the Research on the Test Technology of Aircraft Engine Blade-casing Rub-impact

open access: yesHangkong gongcheng jinzhan, 2020
The static rotor rub-impact problem is one of the main reasons of vibration over-standard failure during transition mode of engine. In order to carry out more effective assessment verification and analysis, the current domestic and abroad research status
MU Qinqin, XU Jian
doaj   +1 more source

Research on Compression Buckling and Failure Characteristics of Composite Fuselage Cap-stringer Stiffened Panel

open access: yesHangkong gongcheng jinzhan, 2021
Carbon fiber reinforced polymer(CFRP)is widely used in the design of aircraft fuselage panel.It is important to study the buckling and failure characteristics of panel to improve the efficiency of structural design.The compression buckling load,failure ...
LI Zhen, CHENG Liping
doaj   +1 more source

Strength-dependent Transition of Graphite Under Shock Condition Resolved by First Principles [PDF]

open access: yesarXiv, 2023
The shock strength dependent formation of diamond represents one of the most intriguing questions in graphite research. Using ab initio DFT-trained carbon GNN model, we observe a strength-dependent graphite transition under shock. The poor sliding caused by scarce sliding time under high-strength shock forms hexagonal diamond with an orientation of ...
arxiv  

STRENGTH TRAINING AND STRENGTH TRAINING IN CHILDREN

open access: yes, 2023
There are some important stages in the process of psychomotor development in children. A period of sports-related activities is included in these stages. At this stage, which covers the period of childhood, the level of physical and motor development of children increases significantly.
openaire   +3 more sources

A cellular system to study responses to a collision between the transcription complex and a protein‐bound nick in the DNA template

open access: yesFEBS Letters, EarlyView.
We present the cellular transcription‐coupled Flp‐nick system allowing the introduction of a Top1‐mimicking cleavage complex (Flpcc) at a Flp recognition target site within a controllable LacZ gene. LacZ transcription leads to the collision of RNA polymerase II (RNAPII) with Flpcc, and this causes RNAPII stalling, ubiquitination, and degradation.
Petra Herring   +6 more
wiley   +1 more source

Vibration fatigue comparative test and life prediction for titanium alloy connection structures

open access: yesHangkong gongcheng jinzhan
A large number of mechanical connection structures in aircraft face vibration fatigue problems,and the evaluation of vibration fatigue performance is the key to determine the service life,safety design and evaluation of the structure.
HE Shi   +4 more
doaj   +1 more source

Acoustic emission characterization of sliding wear under condition of direct and inverse transformations in low-temperature degradation aged Y-TZP and Y-TZP-AL2O3

open access: yesFriction, 2018
In this research, results of the investigation of the sliding friction and wear of yttria-stabilized tetragonal zirconia polycrystalline (Y-TZP) and Y-TZP-Al2O3 samples preliminarily subjected to low-temperature degradation are reported.
Nikolai L. Savchenko   +5 more
doaj   +1 more source

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