Results 11 to 20 of about 4,368,379 (347)

New finding of Toxorhina (Ceratocheilus) limoniid fly in Eocene Baltic amber and the biogeographical context of the genus

Scientific Reports, 2022
Based on new fossil materials, a new species Toxorhina (Ceratocheilus) christelius sp. nov. has been described herein with complete documentation of drawings and photographs.
Iwona Kania-Kłosok, Wiesław Krzemiński, Jacek Szwedo   +2 more
doaj   +1 more source

Phylogeny and biogeography of the enigmatic ghost lineage Cylindrotomidae (Diptera, Nematocera)

Scientific Reports, 2021
Ghost lineages have always challenged the understanding of organism evolution. They participate in misinterpretations in phylogenetic, clade dating, biogeographic, and paleoecologic studies.
Iwona Kania-Kłosok, André Nel, Jacek Szwedo, Wiktoria Jordan-Stasiło, Wiesław Krzemiński   +4 more
doaj   +1 more source

Transient evolution of non-metallic inclusions in molten high aluminum and high manganese steel contacting with slag and crucible: experimental investigation and FactSage macros modeling

Journal of Materials Research and Technology, 2023
In this work, high temperature experiments of high Al molten steel contacting with crucible and slag were performed to investigate the effect of crucible–slag–steel reaction on transient evolution of inclusions in the high Al molten steel.
Jinlong Wang, Shengqiang Song, Zhengliang Xue   +2 more
doaj   +1 more source

Optimal Control for a Class of Riemann-Liouville Fractional Evolution Inclusions

Symmetry, 2022
In this paper, under symmetric properties of multivalued operators, the existence of mild solutions as well as optimal control for the nonlocal problem of fractional semilinear evolution inclusions are investigated in abstract spaces.
He Yang, Qianqian Ren
semanticscholar   +1 more source

Existence and approximate controllability of non-autonomous functional impulsive evolution inclusions in Banach spaces [PDF]

Journal of Differential Equations, 2020
In this paper, we are concerned with the approximate controllability results for a class of impulsive functional differential control systems involving time dependent operators in Banach spaces.
S. Arora, M. T. Mohan, J. Dabas
semanticscholar   +1 more source

Characterization of the morphological evolution of MnS inclusions in free-cutting steel during heating

Journal of Materials Research and Technology, 2022
The size, morphology and distribution of MnS inclusions in the sulfur bearing free-cutting steel are the key factors to determine the performance of the free-cutting steel. It is thus important to accurately characterize and control the morphology of the
Yi Zhao, Tao Li, Guozhang Tang, Han Guo, Jianchuan Yan, Xiaopei Guo, Yulin Zhu   +6 more
doaj   +1 more source

Hydrocarbon Accumulation Model Controlled by Overpressure Evolution in the Kelasu Thrust Belt of the Kuqa Depression, NW China

Lithosphere, 2022
The Kuqa Depression is the most representative overpressured hydrocarbon accumulation area in western China. The early rapid subsidence since 5 Ma and the strong uplift in the late period have led to a complicated evolution history of the overpressure ...
Yilin Liang, Xianfeng Liu, Nan Wu, Yong Feng, Jian Wang   +4 more
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Study on the thermodynamic stability and evolution of inclusions in Al–Ti deoxidized steel

High Temperature Materials and Processes, 2022
To investigate the thermodynamic stability and the evolution process of inclusions in the Al–Ti deoxidized steels, both laboratory experiments and thermodynamic calculations were conducted in the present work.
Wang Jun, Wang Linzhu, Li Xiang, Li Junqi, Chen Chaoyi, Li Changrong, Zhuang Changling   +6 more
doaj   +1 more source

Evolution of nonmetallic inclusions during production of 20CrMo alloy steel

工程科学学报, 2021
20CrMo alloy steel is commonly used to produce high-pressure pipes, gears, automobile parts, etc., and there are stringent requirements for its yield strength, tensile strength, and impact energy.
Wei-jian WANG, Yan LUO, Li-feng ZHANG, Ying REN   +3 more
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Influence of MnS inclusions on dynamic recrystallization and annealing twins formation during thermal deformation

Journal of Materials Research and Technology, 2022
The existence of MnS inclusions during thermal deformation affects the dynamic recrystallization (DRX) behavior and twinning evolution of FCC matrix.
Ze-long Du, Xin-gang Liu, Jiang-tao Gui, Yu-jiao Ke, Li-feng Zhang   +4 more
doaj   +1 more source