Deformation-induced ferrite transformation (DIFT) has been proved to be an effective approach to refine ferrite grains. This paper shows that the ferrite grains can further be refined through combination of DIFT and...
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Deformation-induced ferrite transformation (DIFT) has been proved to be an effective approach to refine ferrite grains. This paper shows that the ferrite grains can further be refined through combination of DIFT and V or V-N microalloying. Vanadium dissolved in γ matrix restrains DIFT. During deformation, vanadium carbonitrides rapidly precipitate due to strain-induced precipitation, which causes decrease in vanadium dissolved in matrix and indirectly accelerates DIFT. Under heavy deformation, deformation induced ferrite (DIF) grains in V microalloyed steel were finer than those in V free steel. The more V added to steel, the finer DIF grains obtained. Moreover, the addition of N to V microalloyed steels can remarkably accelerate precipitation of V, and then promote DIFT. However, DIF grains in V-N microalloyed steel easily coarsen.
This paper discusses Pritchard's solution to radical skeptical *** holds that seeing shoild be distinguished from verdical seeing and say and only by mixing them up can people have the doctrine of ED.
This paper discusses Pritchard's solution to radical skeptical *** holds that seeing shoild be distinguished from verdical seeing and say and only by mixing them up can people have the doctrine of ED.
The traditional way to filter out the implausible candidate solutions to the semantic paradoxes is to appeal to the so-called "cost/benefit analyses." Yet it is often tedious and controversial to carry out such anal...
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The traditional way to filter out the implausible candidate solutions to the semantic paradoxes is to appeal to the so-called "cost/benefit analyses." Yet it is often tedious and controversial to carry out such analyses in detail. Facing this, it would be helpful for us to rely upon some principles to filter out at least something, if not everything, from them. The proposal in this paper is thereby rather simple: We may use principles of compositionality as a "filter" for this purpose. The paper has four sections. In Section 2, the author uses the filter to examine Kripke's fixed-point theory and to thereby show how it works. In Section 3, the author gives more examples from the classical theories of truth to demonstrate the power of the filter. In Section 4, the author addresses the skepticism concerning whether there is any consistent or non-trivial theory of truth that can survive this filtering procedure. A "nearly sufficient" condition for a theory of truth to survive this test is discussed in order to show that at least some consistent or non-trivial theories of truth do indeed survive the filtering procedure.
The recently emerged severe acute respiratory syndrome coronavirus 2(SARS-CoV-2),which is the causative agent of ongoing global pan demic of COVID-19,may trigger imm uno suppression in the early stage and overactive i...
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The recently emerged severe acute respiratory syndrome coronavirus 2(SARS-CoV-2),which is the causative agent of ongoing global pan demic of COVID-19,may trigger imm uno suppression in the early stage and overactive immune resp onse in the late stage of infection;However,the un derlying mecha nisms are not well *** we dem on strated that the SARS-CoV-2 nucleocapsid(N)protein dually regulated innate immune responses,i.e.,the low-dose N protein suppressed type I interferon(IFN-I)signaling and inflammatory cytokines,whereas high-dose N protein promoted IFN-I signaling and inflammatory ***,the SARS-CoV-2 N protein dually regulated the phosphorylation and nuclear translocation of IRF3,STAT1,and *** on ally,low-dose N protein combined with TRIM25 could suppress the ubiquitination and activatio n of retinoic acidinducible gene I(RIG-I).Our findings revealed a regulatory mechanism of innate immune responses by the SARS-CoV-2 N protein,which would contribute to understanding the pathogenesis of SARS-CoV-2 and other SARS-like coronaviruses,and development of more effective strategies for controlling COVID-19.
Nowadays,collaborative writing has gained much attention of many *** task complexity is a crucial factor that influences second language(L2)***,little research has explored how task complexity affects the quality of L...
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Nowadays,collaborative writing has gained much attention of many *** task complexity is a crucial factor that influences second language(L2)***,little research has explored how task complexity affects the quality of L2 collaborative *** study investigates the impact of task complexity on syntactic complexity,lexical complexity,and accuracy of the second language collaborative *** learners(N=50)in a Chinese university were required to complete two writing tasks collaboratively:a simple task and a complex *** analyzing their compositions,we found that task complexity has a significant impact on syntactic complexity and high complexity writing tasks help increase the syntactic complexity of second language collaborative ***,task complexity has little impact on lexical complexity and *** accuracy of writing tasks is largely influenced by the task *** research results may enhance the understanding of collaborative writing and task complexity and provide valuable guidance for the second language teaching.
This study investigates the effects of alignment in the narrative and expository continuation *** groups of English learners(N=50)in a Chinese university were required to continue one narrative essay and one expositor...
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This study investigates the effects of alignment in the narrative and expository continuation *** groups of English learners(N=50)in a Chinese university were required to continue one narrative essay and one expository essay,both of which had an English version and a Chinese *** analysis of the data using the Antconc software demonstrated that the effects of alignment occurred in the two types of continued compositions to some *** learners committed fewer errors when continuing the English-version *** addition,learners were required to complete a *** questionnaire results showed that the continuation task,as a practical teaching mode,can facilitate the students’writing and learning.
Dear Editor,Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2),the causative agent of the COVID-19 pandemic,has posed severe threats to global public health,highlighting an urgent need to understand its patho...
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Dear Editor,Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2),the causative agent of the COVID-19 pandemic,has posed severe threats to global public health,highlighting an urgent need to understand its pathogenesis and to develop antiviral *** DNA and RNA viruses can modulate cell cycle progression to maximize their replication.1 However,the effects of SARS-CoV-2 on cell cycle progression remains largely unknown.
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