Sun-induced chlorophyll fluorescence (SIF) is a promising remote sensing signal for early stress detection due to its close link with photosynthesis. Canopy SIF signals are controlled by leaf physiology, canopy structure, radiation intensity and sun-observer geometry. Variations in observations affected variations these controlling factors besides water stress. Mitigating the interference of no...

INTRODUCTION Correct choice of osteosynthesis method is a very important factor in providing the optimal conditions for appropriate healing of the fracture. There are still disagreements about the method of stabilization of some long bone fractures. Critically observed, no method of fracture fixation is ideal. Each osteosynthesis method has both advantages and weaknesses. OBJECTIVE The object...

carbon nanotube (cnt) is considered as a new generation of material possessing superior mechanical, thermal and electrical properties. the applications of cnt, especially in composite materials, i.e. carbon nanotube reinforced polymer have received great attention and interest in recent years. to characterize the influence of cnt on the stress intensity factor of nanocomposites, three fracture ...

In this article, the size effect on the dynamic behavior of a simply supported multi-cracked microbeam is studied based on the Modified Couple Stress Theory (MCST).  At first, based on MCST, the equivalent torsional stiffness spring for every open edge crack at its location is calculated; in this regard, the Stress Intensity Factor (SIF) is al...

The presented work introduces a numerical parametric study on the crack propagation direction under mixed-mode conditions (mode I + II). It is conducted for the geometry of an eccentric asymmetric fourpoint bending of a single edge notched beam specimen; various levels of mode-mixity are ensured by modifications in the crack length and crack eccentricity. The direction of crack propagation is e...

The micro- and macroscopic fatigue crack growth (FCG) rates of a wide class structural materials were analyzed it was concluded that both coincide either during high-temperature tests or at high stress intensity factor (SIF) values. Their coincidence requires level cyclic deformation the metal along entire front as necessary condition for formation striations (FS). Based on analysis digital fra...

Binding of granulocyte colony-stimulating factor (G-CSF) to normal myeloid cells activates the protein tyrosine kinases Lyn and Syk and results in the immediate early upregulation of G-CSF receptor (R) mRNA. In our studies of the signaling pathways activated by G-CSF that are coupled to proliferation and differentiation of myeloid cells, we examined whether G-CSF activated a latent transcriptio...

This study uses the droughts of 2011 in Texas and 2012 over the central Great Plains as case studies to explore the potential of satellite-observed solar-induced chlorophyll fluorescence (SIF) for monitoring drought dynamics. We find that the spatial patterns of negative SIF anomalies from the Global Ozone Monitoring Experiment 2 (GOME-2) closely resembled drought intensity maps from the U.S. D...

With the construction of underground rock engineering, surrounding in deep tunnels appears zonal disintegration fracture and intact zones alternate distribution, which is a special engineering geological phenomenon. This study establishes partitioned model under coupling high in-situ stress osmotic pressure, identify key influencing factors model. Furthermore, intensity factor (SIF) initial cra...

Aluminium alloy (AA2024-T4) is a material commonly used in the aerospace industry, where it forms part of fuselage aircraft and spacecraft thanks to its good machinability strength/weight ratio. These characteristics allowed be applied construction structure pilot plant produce biological extracts nano-encapsulated bioproducts for phytosanitary control diseases associated with microorganisms cr...