Resource Type

Journal Article 844

Conference Videos 19

Year

2024 3

2023 70

2022 88

2021 109

2020 83

2019 65

2018 63

2017 71

2016 43

2015 45

2014 44

2013 16

2012 30

2011 17

2010 17

2009 17

2008 21

2007 9

2006 6

2005 7

open ︾

Keywords

simulation 5

different 4

Chlorella sp. HQ 3

Escherichia coli 3

NOx 3

artificial intelligence (AI) 3

3D printing 2

Akkermansia muciniphila 2

Botrytis cinerea 2

C. dubia 2

E. coli 2

Eucalyptus 2

Hevea brasiliensis 2

J-integral 2

N 2

Neospora caninum 2

Triticum aestivum 2

β-glucuronidase 2

COVID-19 2

open ︾

Search scope:

排序： Display mode:

Destructive and non-destructive evaluation of concrete for optimum sand to aggregate volume ratio

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 6,   Pages 1400-1414 doi: 10.1007/s11709-021-0779-8

Abstract: Aggregates are the biggest contributor to concrete volume and are a crucial parameter in dictating itsAs such, a detailed experimental investigation was carried out to evaluate the effect of sand-to-aggregatevolume ratio (<i>si>/<i>ai>) on the mechanical properties of concrete utilizing both destructive, 0.40, 0.44, 0.48, 0.52, and 0.56), cement content (340 and 450 kg/m3), water-to-cement ratiomix designs; optimum ratios of <i>si>/<i>ai> were found to be 0.40 and 0.44 for the maximum aggregate

Keywords： aggregates     non-destructive testing     sand-to-aggregate volume ratio (<i>si>/<i>ai>)     maximum aggregate    

HTML PDF Collect

Effects of coarse and fine aggregates on long-term mechanical properties of sea sand recycled aggregate

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 754-772 doi: 10.1007/s11709-021-0711-2

Abstract: Typical effects of coarse and fine aggregates on the long-term properties of sea sand recycled aggregateTwo different types of fine (coarse) aggregates are considered: sea sand and river sand (natural andHowever, the Poisson’s ratio reduces after 2 years.and cement mortar reduce by adopting sea sand.The aggregate type changes the crack characteristics and propagation of SSRAC.

Keywords： sea sand recycled aggregate concrete     recycled coarse aggregate replacement percentage     sea sand chloride    

HTML PDF Collect

Effects of microfine aggregate in manufactured sand on bleeding and plastic shrinkage cracking of concrete

Branavan ARULMOLY; Chaminda KONTHESINGHA; Anura NANAYAKKARA

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 11,   Pages 1453-1473 doi: 10.1007/s11709-022-0877-2

Abstract: Construction industries have started to utilize manufactured sand (MS) as an effective alternative forriver sand in concrete.High-grade parent rocks are crushed to obtain MS, which also produces a considerable amount of microfine aggregateThe results concluded that the MFA replacements and the effective water-to-cement ratio have a significant

Keywords： manufactured sand     fresh concrete     microfines     admixtures     shrinkage     cracking    

HTML PDF Collect

Influence of nozzle height to width ratio on ignition and NO

Liutao SUN, Yonghong YAN, Rui SUN, Zhengkang PENG, Chunli XING, Jiangquan WU

Frontiers in Energy 2021, Volume 15, Issue 2,   Pages 431-448 doi: 10.1007/s11708-021-0726-3

Abstract: (SC), large-scale experiments were conducted in a 300 kW fired furnace at various nozzle settings, i.eThe combustion tests indicate that the flame stability, ignition performance, and fuel burnout ratioFurthermore, the ratio (denoted by / ) of the strong reduction zone area to the combustion reaction

Keywords： rectangular jet burner     nozzle height to width ratio     ignition characteristics     pyrolyzed semicoke (SC)and bituminous blend     NO<i>xi> formation    

HTML PDF Collect

Transcriptomic basis of neutrophil ratio variation induced by poly I:C stimulation in porcine peripheral

Haiyan WANG, Qiaoxia ZHANG, Lilin YIN, Xiangdong LIU, Shuhong ZHAO, Mengjin ZHU, Changchun LI

Frontiers of Agricultural Science and Engineering 2017, Volume 4, Issue 3,   Pages 342-352 doi: 10.15302/J-FASE-2017162

Abstract: Neutrophils are vital components of defense mechanisms against invading pathogens and are closely linked with the individual antiviral capacity of pigs and other mammals. Neutrophilia is a well-known clinical characteristic of viral and bacterial infections. Using Affymetrix porcine genome microarrays, we investigated the gene expression profiles associated with neutrophil variation in porcine peripheral blood before and after polyriboinosinic-polyribocytidylic acid stimulation. Transcriptomic analysis showed 796 differentially expressed genes (DEGs) in extreme response (ER) pigs and 192 DEGs in moderate response (MR) pigs. Most DEGs were related to immune responses, included , , , , , , , and . Gene ontology analysis indicated that the DEGs of both ER and MR pigs were involved in common biological processes, such as cell proliferation, growth regulation, immune response, inflammatory response and cell activation. The ER and MR groups also showed differences in DEGs involved in biological processes. DEGs involved in cell division and cell cycle were specifically found in the ER pigs, whereas DEGs involved in cell migration were specifically found in the MR pigs. The study provides a basic understanding of the molecular basis for the antiviral capacity of pigs and other mammals.

Keywords： neutrophil     peripheral blood     pig     poly I:C     transcriptome    

HTML PDF Collect

Long term performance of recycled concrete beams with different water–cement ratio and recycled aggregate

Jingwei YING; Feiming SU; Shuangren CHEN

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 3,   Pages 302-315 doi: 10.1007/s11709-022-0803-7

Abstract: The purpose of this study is to reveal the service performance of recycled aggregate concrete (RAC) componentsfor different values of water−cement ratio and replacement rate of recycled coarse aggregate (RCA).requirements when changing the replacement rate of RCA, it is necessary to change the water−cement ratioResults showed that the damage pattern of RAC was the same as that of natural aggregate concrete (NACThe water−cement ratio has an evident influence on the axial compressive strength and early creep of

Keywords： recycled concrete     beam     the replacement rate of recycled coarse aggregate     water–cement ratio     digital    

HTML PDF Collect

Roles of acid-producing bacteria in anaerobic digestion of waste activated sludge

Sijia Ai, Hongyu Liu, Mengjie Wu, Guangming Zeng, Chunping Yang

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 6, doi: 10.1007/s11783-018-1050-y

Abstract:

<i>Bacillus coagulansi> improved TCOD removal

The optimal inoculum concentration of <i>Bacilluscoagulans i>AFB-1 was 30%.

Keywords： Anaerobic digestion     Waste activated sludge     Acid-producing bacteria     <i>Bacillus coagulansi>    

HTML PDF Collect

Effects of nano-silicon and common silicon on lead uptake and translocation in two rice cultivars

Jianguo LIU,Hui CAI,Congcong MEI,Mingxin WANG

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 5,   Pages 905-911 doi: 10.1007/s11783-015-0786-x

Abstract: The current study investigated the effects of nano-silicon (Si) and common Si on lead (Pb) toxicity,nano-Si were 1.8%–5.2% and 3.3%–11.8% higher, respectively, than those of plants with no Si supply (controlCompared to the control, Pb concentrations in rice shoots supplied with common Si and nano-Si were reducedPb concentrations in rice grains treated with common Si and nano-Si decreased by 21.3%–40.9% and 38.6%The results of the study indicate that nano-Si is more efficient than common Si in ameliorating the toxic

Keywords： silicon (Si)     lead (Pb)     rice (<i>Oryza sativai> L.)     toxicity     accumulation    

HTML PDF Collect

Experimental research on the mixed sand ratio and initial dry density of weathered sand improved expansive

Yang Jun,Yang Zhi,Zhang Guodong,Tang Yunwei and Chen Hongping

Strategic Study of CAE 2014, Volume 16, Issue 2,   Pages 73-78

Abstract: Key analysis free load swelling rate of a non-load time，the proportion of mixed sand，the relationshipexpansion and eventually stabilize in three stages；during the initial dry density is constant，weathered sandsoil free load swelling rate will increase the proportion of sand mixed with the rapid decrease slowlyafter the first lower，weathered sand soil modified free load swelling rate is not sensitive to the amountof sand mixed；in the same mixed sand ratio， weathered sand soil free load swelling rate increases with

Keywords： expansive soils     weathered sand     initial dry density     mixing sand ratio     free load swelling rate    

HTML PDF Collect

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： <i>JHi> classification     <i>Qi> and <i>RMRi> classification     new method    

HTML PDF Collect

The Potential Role of Powdery Mildew-Resistance Gene <i>Pm40i> in Chinese Wheat-Breeding Programs inthe Post-<i>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     <i>Pm21i>     <i>Pm40i>     Alien species     Native resistance    

HTML PDF Collect

Bamboo-like -doped carbon nanotubes encapsulating M(Co, Fe)-Ni alloy for electrochemical production of syngas with potential-independent CO/H ratios

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 4,   Pages 498-510 doi: 10.1007/s11705-021-2082-6

Abstract: Low-cost electrocatalysts to produce tunable syngas with a potential-independent CO/H2 ratioHerein, a series of <i>Ni>-doped carbon nanotubes encapsulating binary alloy nanoparticles (Mi>Ni-NCNT.More importantly, stable CO/H2 ratios of 2:1 and 1.5:1, corresponding to the ratio to producepotential-independent electrocatalysts to effectively produce syngas with an adjustable CO/H2 ratio

Keywords： electrochemical reduction of CO2     syngas     <i>Ni>-doped carbon nanotubes     encapsulated alloynanoparticles     CO/H2 ratio    

HTML PDF Collect

NiFeRuO<i>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<i>xi>/NF, comprised of NiFeRuO<i>xi> nanosheetsNiFeRuO<i>xi>/NF displays high electrocatalytic activity and stability for overall alkalineA solar-driven system containing such a bifunctional NiFeRuO<i>xi>/NF has an almost 100%The NiFeRuO<i>xi> coating around Ni foam is an anti-corrosion layer and also a critical

Keywords： NiFeRuO<i>xi> nanosheets     Ni foam     electrocatalysis     overall seawater splitting     solar-driven    

HTML PDF Collect

Presence and Antimicrobial Susceptibility of RE-<i>cmeABCi>-Positive <i>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-<i>cmeABCi>     <i>Campylobacteri>     Ciprofloxacin     Florfenicol    

HTML PDF Collect

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

HTML PDF Collect

Title Author Date Type Operation

Destructive and non-destructive evaluation of concrete for optimum sand to aggregate volume ratio

Journal Article

Effects of coarse and fine aggregates on long-term mechanical properties of sea sand recycled aggregate

Journal Article

Effects of microfine aggregate in manufactured sand on bleeding and plastic shrinkage cracking of concrete

Branavan ARULMOLY; Chaminda KONTHESINGHA; Anura NANAYAKKARA

Journal Article

Influence of nozzle height to width ratio on ignition and NO

Liutao SUN, Yonghong YAN, Rui SUN, Zhengkang PENG, Chunli XING, Jiangquan WU

Journal Article

Transcriptomic basis of neutrophil ratio variation induced by poly I:C stimulation in porcine peripheral

Haiyan WANG, Qiaoxia ZHANG, Lilin YIN, Xiangdong LIU, Shuhong ZHAO, Mengjin ZHU, Changchun LI

Journal Article

Long term performance of recycled concrete beams with different water–cement ratio and recycled aggregate

Jingwei YING; Feiming SU; Shuangren CHEN

Journal Article

Roles of acid-producing bacteria in anaerobic digestion of waste activated sludge

Sijia Ai, Hongyu Liu, Mengjie Wu, Guangming Zeng, Chunping Yang

Journal Article

Effects of nano-silicon and common silicon on lead uptake and translocation in two rice cultivars

Jianguo LIU,Hui CAI,Congcong MEI,Mingxin WANG

Journal Article

Experimental research on the mixed sand ratio and initial dry density of weathered sand improved expansive

Yang Jun,Yang Zhi,Zhang Guodong,Tang Yunwei and Chen Hongping

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 <i>Pm40i> in Chinese Wheat-Breeding Programs inthe Post-<i>Pm21i> Era

Shengwen Tang,Yuting Hu,Shengfu Zhong,Peigao Luo

Journal Article

Bamboo-like -doped carbon nanotubes encapsulating M(Co, Fe)-Ni alloy for electrochemical production of syngas with potential-independent CO/H ratios

Journal Article

NiFeRuO<i>xi> nanosheets on Ni foam as an electrocatalyst for efficient

Journal Article

Presence and Antimicrobial Susceptibility of RE-<i>cmeABCi>-Positive <i>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