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Rapid alloying of CoCrFeMnNi high-entropy alloy from elemental feedstock toward high-throughput synthesis

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0727-x

Abstract: Existing in situi> synthesis methods based on additive manufacturing are insufficient for efficientlyIn this work, laser powder bed fusion (L-PBF) is adopted for the in situi> synthesis of equiatomichomogenization heat-treated samples exhibit better processability, with a smaller composition deviation, i.e

Keywords： laser powder bed fusion (L-PBF) in situi> alloying high-entropy alloys heat treatment rapid

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A New Method for Strengthening Wrought Superalloys: micro-alloying with Phosphorus and Boron

Hu Zhuangqi,Sun Wenru,Song Hongwei

Strategic Study of CAE 2005, Volume 7, Issue 3, Pages 17-26

Abstract: By micro-alloying with phosphorus and boron, alloys with extended rupture life are developed, the service

Keywords： wrought superalloy phosphorus boron micro-alloying

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Research on Characteristic of Double Glow Discharge Plasma Surface Alloying Process

Gao Yuan,Xu Jinyong,Gao Qing,An Jinping,Xu Zhong

Strategic Study of CAE 2008, Volume 10, Issue 2, Pages 26-30

Abstract:

The principle, Discharge mode, alloying process and research works ofThe technology is fit for high melting point metal surface alloying and surface alloying in surface of

Keywords： double glow discharge plasma surface alloying process high melting point metal hollow cathode effect

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Mechanical properties of vanadium-alloyed austempered ductile iron for crankshaft applications

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 3, doi: 10.1007/s11465-023-0746-2

Abstract: combination of mechanical properties for crankshaft applications by the combined effect of vanadium (V) alloying

Keywords： austempered ductile iron (ADI) vanadium alloying mechanical properties crankshafts retained austenite

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Industrial-Scale Polypropylene-Polyethylene Physical Alloying Toward Recycling Article

Jinping Qu, Zhaoxia Huang, Zhitao Yang, Guizhen Zhang, Xiaochun Yin, Yanhong Feng, Hezhi He, Gang Jin, Ting Wu, Guangjian He, Xianwu Cao

Engineering 2022, Volume 9, Issue 2, Pages 95-100 doi: 10.1016/j.eng.2021.02.021

Abstract:

Polypropylene (PP) and polyethylene (PE) play central roles in our daily life. However, their immiscibility presents a major hurdle in both industry and academia when recycling them into alloys with favorable mechanical properties. Moreover, typical compatibilizer-enabled approaches are limited due to increased environmental concerns. Herein, inspired by a traditional Chinese technique, we report a facile, industryscale methodology that produces a PP/PE binary blend with a highly ordered honeycomb nanostructure without any additives. Due to its nanostructure, the blend exhibits enhanced tensile properties in comparison with the parent components or with a sample prepared using an internal mixer. This approach has potential for applications not only in immiscible polymer blending, but also in non-sorting, compatibilizer-free waste plastics recycling. Through this technique, we expect that an environmentally friendly and sustainable plastic wastes recycling avenue can be found, and great economic benefits can be gained.

Keywords： Polypropylene Polyethylene Physical alloying Honeycomb structure

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Development of Plasma Surface Metallurgy Technology

Xu Zhong

Strategic Study of CAE 2002, Volume 4, Issue 2, Pages 36-41

Abstract: The double glow surface alloying process, which developed based on the plasma nitriding, is a kind ofRecently the double glow surface alloying process has been applied to titanium and its alloys.

Keywords： plasma plasma surface metallurgy technology double glow surface alloying process

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Development of a new method for RMR and Q classification method to optimize support system in tunneling

Asghar RAHMATI,Lohrasb FARAMARZI,Manouchehr SANEI

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 4, Pages 448-455 doi: 10.1007/s11709-014-0262-x

Abstract: Rock mass classification system is very suitable for various engineering design and stability analysis. classification method is confirmed by Japan Highway Public Corporation that this method can figure out either strength or deformability of rock mass, further appropriating the amount of rock bolts, thickness of shotcrete, and size of pitch of steel ribs just after the blasting procedure. Based on these advantages of method, in this study, according to data of five deep and long tunnels in Iran, two equations for estimating the value of method from and classification systems were developed. These equations as a new method were able to optimize the support system for and classification systems. From classification and its application in these case studies, it is pointed out that the method for the design of support systems in underground working is more reliable than the and classification systems.

Keywords： JHi> classification Qi> and RMRi> classification new method

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The Potential Role of Powdery Mildew-Resistance Gene Pm40i> in Chinese Wheat-Breeding Programs inthe Post-Pm21i> Era Perspective

Shengwen Tang,Yuting Hu,Shengfu Zhong,Peigao Luo

Engineering 2018, Volume 4, Issue 4, Pages 500-506 doi: 10.1016/j.eng.2018.06.004

Abstract:

Powdery mildew, which is caused by Blumeria graminis f. sp. tritici (Bgt), is an important leaf disease that affects wheat yield. Powdery mildew-resistance (Pm) gene Pm21 was first transferred into wheat in the 1980s, by translocating the Heuchera villosa chromosome arm 6VS to the wheat chromosome arm 6AL (6VS·6AL). Recently, new Bgt isolates that are virulent to Pm21 have been identified in some wheat fields, indicating that wheat breeders should be aware of the risk of deploying Pm21, although pathological details regarding these virulent isolates still remain to be discovered. Pm40 was identified and mapped on the wheat chromosome arm 7BS from several wheat lines developed from the progenies of a wild cross between wheat and Thinopyrum intermedium. Pm40 offers a broad spectrum of resistance to Bgt, which suggests that it is likely to provide potentially durable resistance. Cytological methods did not detect any large alien chromosomal segment in the wheat lines carrying Pm40. Lines with Pm40 and promising agronomical traits have been released by several wheat-breeding programs in the past several years. Therefore, we believe that Pm40 will play a role in powdery mildew-resistance wheat breeding after Pm21 resistance is overcome by Bgt isolates. In addition, both Pm21 and Pm40 were derived from alien species, suggesting that the resistance genes derived from alien species are potentially more durable or effective than those identified from wheat.

Keywords： Wheat Powdery mildew Pm21i> Pm40i> Alien species Native resistance

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NiFeRuO_xi> nanosheets on Ni foam as an electrocatalyst for efficient

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11, Pages 1698-1706 doi: 10.1007/s11705-023-2334-8

Abstract: The electrocatalyst NiFeRuO_xi>/NF, comprised of NiFeRuO_xi> nanosheetsNiFeRuO_xi>/NF displays high electrocatalytic activity and stability for overall alkalineA solar-driven system containing such a bifunctional NiFeRuO_xi>/NF has an almost 100%The NiFeRuO_xi> coating around Ni foam is an anti-corrosion layer and also a critical

Keywords： NiFeRuO_xi> nanosheets Ni foam electrocatalysis overall seawater splitting solar-driven

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Presence and Antimicrobial Susceptibility of RE-cmeABCi>-Positive Campylobacteri> Isolated Article

Dejun Liu, Weiwen Liu, Xing Li, Hong Yao, Zhangqi Shen, Yang Wang, Jianzhong Shen

Engineering 2020, Volume 6, Issue 1, Pages 34-39 doi: 10.1016/j.eng.2019.10.013

Abstract:

Campylobacter spp. (C. spp.) are the leading cause of human gastroenteritis worldwide. RE-CmeABC is a newly identified resistance-enhancing multidrug efflux pump of C. spp. that confers high-level resistance to fluoroquinolones, phenicols, macrolides, and tetracyclines, all of which are critical drugs in both human and veterinary medicine. In this study, we analyzed the presence and antimicrobial susceptibility of RE-cmeABC-positive Campylobacter isolates of food-animal origin from three representative regions (Shandong, Shanghai, and Guangdong) in China over three successive years, from 2014 to 2016. A total of 1088 Campylobacter isolates (931 C. coli and 157 C. jejuni) were recovered from the RE-cmeABC screening. We detected 122 (11.2%) RE-cmeABC-positive isolates of chicken origin, including 111 (70.7%) C. jejuni and 11 (1.2%) C. coli. This multidrug efflux pump is more prevalent among C. jejuni than C. coli. The level of resistance was significantly different in 111 RE-cmeABC-positive C. jejuni versus 46 RE-cmeABC-negative C. jejuni for florfenicol, clindamycin, and erythromycin (P < 0.05), but not for ciprofloxacin (CIP), tetracycline (TET), and gentamicin. However, the isolates harboring RE-cmeABC could shift the minimum inhibitory concentration distribution to the higher range for CIP and TET. Pulsed-field gel electrophoresis (PFGE) analysis suggested that horizontal transmission might be involved in the dissemination of RE-cmeABC in Shanghai and Guangdong, while clonal expansion was predominant in Shandong. Three isolates shared the indiscriminate PFGE types of RE-cmeABC-positive C. jejuni isolates in Shanghai and Guangdong, and four isolates in Shanghai and Shandong. Our study suggests the possibility of a wide dissemination of RE-cmeABC in Campylobacter of food-animal origin, which would pose a significant threat to public health.

Keywords： RE-cmeABCi> Campylobacteri> Ciprofloxacin Florfenicol

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A highly efficient methodology for the preparation of

Yongxin Zhang, Shucheng Wang, Yaodong Huang

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 3, Pages 679-686 doi: 10.1007/s11705-020-1979-9

Abstract: A convenient and highly efficient method is described for the synthesis of -methoxycarbazole derivatives, including those with sterically demanding, benzannulated, or strongly electron-donating or -withdrawing substituents. Various -methoxycarbazole derivatives were directly prepared in good-to-moderate yields by the Pd (dba) CHCl /9,9-dimethyl-4,5-bis(diphenylphosphino)xanthene-catalyzed reactions of the corresponding dibromobiphenyl compounds and methoxya-mine. Based on this methodology, the first total synthesis of 3,3′-[oxybis(methylene)]bis(9-methoxy-9 -carbazole), an antimicrobial dimeric carbazole alkaloid previously isolated from the stem bark of , was achieved in 18% yield over seven steps from 1,2-dibromobenzene.

Keywords： Ni>-methoxyl carbazole dimeric Ni>-methoxyl carbazole alkaloid total synthesis double Ni>-arylation of methoxyamine

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Thermal and Mechanical Properties Optimization of ABi>O₄ Type EuNbO₄ By theBi>-Site Substitution of Ta Article

Lin Chen, Jing Feng

Engineering 2020, Volume 6, Issue 2, Pages 177-184 doi: 10.1016/j.eng.2019.12.006

Abstract:

Ferroelastic ABO₄ type RETaO₄ and RENbO₄ ceramics (where RE stands for rare earth) are being investigated as promising thermal barrier coatings (TBCs), and the mechanical properties of RETaO₄ have been found to be better than those of RENbO₄. In this work, B-site substitution of tantalum (Ta) is used to optimize the thermal and mechanical properties of EuNbO₄ fabricated through a solid-state reaction (SSR). The crystal structure is clarified by means of X-ray diffraction (XRD) and Raman spectroscopy; and the surface microstructure is surveyed via scanning electronic microscope (SEM). The Young's modulus and the thermal expansion coefficient (TEC) of EuNbO₄ are effectively increased; with respective maximum values of 169 GPa and 11.2×10^–6 K^–1 (at 1200 °C). The thermal conductivity is reduced to 1.52 W·K⁻¹·m⁻¹ (at 700 °C), and the thermal radiation resistance is improved. The relationship between the phonon thermal diffusivity and temperature was established in order to determine the intrinsic phonon thermal conductivity by eliminating the thermal radiation effects. The results indicate that the thermal and mechanical properties of EuNbO₄ can be effectually optimized via the B-site substitution of Ta, and that
this proposed material can be applied as a high-temperature structural ceramic in future.

Keywords： Thermal barrier coatings Rare earth niobates Substitution Thermal conductivity Thermal expansion coefficients Young’s modulus

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Traces and echoes of De Architecturai> by Marcus Vitruvius Pollio in the work of Xu Guangqi in 17th

Michela CIGOLA,Yibing FANG

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 1, Pages 3-11 doi: 10.1007/s11465-015-0359-5

Abstract: the 16th and 17th centuries by analyzing a book of Western technology that he wrote, namely, Taixi Shuifai> (On Western Hydraulicsi>).Taixi Shuifai>.found that Archimedes’ screw and Ctesibius’ machine, which are included in Vitruvius’ De Architecturai> volumes, also appear in the work of Xu Guangqi.

Keywords： Vitruvius’ De Architecturai> Xu Guangqi’s Taixi Shuifai> Jesuit missionaries Italian Renaissance

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Accounting for the uncertainties in the estimation of average shear wave velocity using – correlations

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5, Pages 1199-1208 doi: 10.1007/s11709-021-0749-1

Abstract: Shear wave velocity ( Vi> _S) is a key parameter in such analysis, although the economyVarious Vi> _S–SPT– Ni> correlations are routinely incorporated in seismic hazardanalysis to estimate the value of Vi> _S.i> _S calculations.The scattering nature of the Vi> _S values estimated using different Vi> _{S

Keywords：

uncertainties


Vi> _S– Ni> correlations


Vi> _S30


SPT data


statistical


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RR1i> and RR2i> gene deletion affects the immunogenicity of a live attenuated pseudorabies

Shijun YAN,He YAN,Chaolin ZHANG,Tongyan WANG,Qingyuan YANG,Zhe SUN,Yan XIAO,Feifei TAN,Xiangdong LI,Kegong TIAN

Frontiers of Agricultural Science and Engineering 2016, Volume 3, Issue 1, Pages 81-86 doi: 10.15302/J-FASE-2016088

Abstract: As virulence-determining genes, and encode the small subunit and large subunit of viral ribonucleotide reductase (RR) in pseudorabies virus which have been extensively studied in mice. However, their role in pigs has not been adequately investigated. In this study, we deleted and genes based on a / / triple gene-deleted pseudorabies virus and tested its efficacy in pigs as a vaccine candidate. The rescued virus showed similar growth properties and plaque size as its parent strain. In an animal study, the virus could elicit humoral immune responses shown by generation of gB-specific antibodies and virus neutralizing antibodies. However, vaccination could not provide protection against virulent pseudorabies virus challenge since vaccinated pigs showed clinical pseudorabies-specific syndromes. The deficiency in protection may due to the generation of late and low levels of gB antibodies and virus neutralizing antibodies.

Keywords： pseudorabies virus RR1i> and RR2i> ribonucleotide reductase vaccine candidate

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Title Author Date Type Operation

Rapid alloying of CoCrFeMnNi high-entropy alloy from elemental feedstock toward high-throughput synthesis

Journal Article

A New Method for Strengthening Wrought Superalloys: micro-alloying with Phosphorus and Boron

Hu Zhuangqi,Sun Wenru,Song Hongwei

Journal Article

Research on Characteristic of Double Glow Discharge Plasma Surface Alloying Process

Gao Yuan,Xu Jinyong,Gao Qing,An Jinping,Xu Zhong

Journal Article

Mechanical properties of vanadium-alloyed austempered ductile iron for crankshaft applications

Journal Article

Industrial-Scale Polypropylene-Polyethylene Physical Alloying Toward Recycling

Jinping Qu, Zhaoxia Huang, Zhitao Yang, Guizhen Zhang, Xiaochun Yin, Yanhong Feng, Hezhi He, Gang Jin, Ting Wu, Guangjian He, Xianwu Cao

Journal Article

Development of Plasma Surface Metallurgy Technology

Xu Zhong

Journal Article

Development of a new method for RMR and Q classification method to optimize support system in tunneling

Asghar RAHMATI,Lohrasb FARAMARZI,Manouchehr SANEI

Journal Article

The Potential Role of Powdery Mildew-Resistance Gene Pm40i> in Chinese Wheat-Breeding Programs inthe Post-Pm21i> Era

Shengwen Tang,Yuting Hu,Shengfu Zhong,Peigao Luo

Journal Article

NiFeRuO_xi> nanosheets on Ni foam as an electrocatalyst for efficient

Journal Article

Presence and Antimicrobial Susceptibility of RE-cmeABCi>-Positive Campylobacteri> Isolated

Dejun Liu, Weiwen Liu, Xing Li, Hong Yao, Zhangqi Shen, Yang Wang, Jianzhong Shen

Journal Article

A highly efficient methodology for the preparation of

Yongxin Zhang, Shucheng Wang, Yaodong Huang

Journal Article

Thermal and Mechanical Properties Optimization of ABi>O₄ Type EuNbO₄ By theBi>-Site Substitution of Ta

Lin Chen, Jing Feng

Journal Article

Traces and echoes of De Architecturai> by Marcus Vitruvius Pollio in the work of Xu Guangqi in 17th

Michela CIGOLA,Yibing FANG

Journal Article

Accounting for the uncertainties in the estimation of average shear wave velocity using – correlations

Journal Article

RR1i> and RR2i> gene deletion affects the immunogenicity of a live attenuated pseudorabies

Shijun YAN,He YAN,Chaolin ZHANG,Tongyan WANG,Qingyuan YANG,Zhe SUN,Yan XIAO,Feifei TAN,Xiangdong LI,Kegong TIAN

Journal Article

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