Results 31 to 40 of about 3,462,180 (319)

Estimation of the characteristic energy of electron precipitation [PDF]

open access: yes, 2002
International audienceData from simultaneous observations (on 13 February 1996, 9 November 1998, and 12 February 1999) with the IRIS, DASI and EISCAT systems are employed in the study of the energy distribution of the electron precipitation during ...
delPozo, C. F.   +6 more
core   +1 more source

The extract of buddleja officinalis maxim. alleviates UVB-induced oxidative damage via the NRF2 pathway in HaCaT cells

open access: yesPharmaceutical Biology
Context Buddleja officinalis Maxim., a prominent medicinal plant from the Scrophulariaceae family, is extensively distributed throught China, Korea, Vietnam, and Myanmar.
Xu Zhu   +4 more
doaj   +1 more source

Current status of the characteristics and control of primary carbides in H13 steel

open access: yes工程科学学报, 2020
The H13 steel is widely used in hot rolling, hot extrusion, and hot forging because of its remarkable fatigue resistance performance, hot strength, and impact toughness.
Yu HUANG, Guo-guang CHENG, Dao-hua BAO
doaj   +1 more source

The behavior of structures based on the characteristic strain model of creep [PDF]

open access: yes, 2011
There has been much work over the past two decades to aid the design and assessment engineer in the selection of a suitable material model of creep for high temperature applications.
Boyle, James, James T. Boyle
core   +1 more source

On characteristic times in generalized thermoelasticity [PDF]

open access: yes, 2001
The model of Green and Lindsay is a popular generalization of the theory of thermoelasticity incorporating second sound. Within the model the second sound is intimately linked to a presence of two characteristic times, t1 and t2, constrained by an ...
Strunin, Dmitry V.
core   +1 more source

Kesuburan Tanah Di Bawah Tegakan Berbagai Jenis Bambu Pada Tanah Andosol-Regosol

open access: yesJurnal Ilmu Lingkungan, 2022
Permintaan bambu yang meningkat dapat dipenuhi dari peningkatan produktivitas bambu melalui budidaya yang intensif. Namun demikian, pengelolaan bambu telah menyebabkan terjadinya perubahan sifat tanah yang terkait dengan kesuburan.
Sutiyono Sutiyono   +2 more
doaj   +1 more source

Characteristic Classes of Hypersurfaces and Characteristic Cycles

open access: yes, 1998
We give a new formula for the Chern-Schwartz-MacPherson class of a hypersurface in a nonsigular compact complex analytic variety. In particular this formula generalizes our previous result on the Euler characteristic of such a hypersurface. Two different approaches are presented. The first is based on the theory of characteristic cycle and the works of
Parusiński, Adam, Pragacz, Piotr
openaire   +3 more sources

When are prime formulae characteristic? [PDF]

open access: yes, 2018
In the setting of the modal logic that characterizes modal refinement over modal transition systems, Boudol and Larsen showed that the formulae for which model checking can be reduced to preorder checking, that is, the characteristic formulae, are ...
Fábregas Alfaro, Ignacio   +4 more
core   +1 more source

IMPROVEMENT OF ECOLOGICAL CHARACTERISTICS OF THE DIESEL ENGINE WORKING ON BIODIESEL FUEL COMPOSITIONS [PDF]

open access: yesAvtomobilʹnyj Transport (Harʹkov), 2015
The ways of decreasing the toxicity of exhaust gases produced by the biodiesel engine are determined analitically. Optimization of the corner of advancing the fuel supply and the coefficient of air surplus is offered as the action of adjusting character,
A. Levterov, V. Savitskyi
doaj  

Characteristics and risk factors for advanced lung cancer with pulmonary embolism: A cross‐sectional, case–control study

open access: yesThe Clinical Respiratory Journal, 2023
Objectives Pulmonary embolism (PE) is a life‐threatening complication that can occur in patients with lung cancer. In this study, we aimed to identify risk factors and examine the clinical characteristics of advanced lung cancer patients with PE. Methods
Yongkang Huang   +10 more
doaj   +1 more source

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