1,089 research outputs found
Supplemental Material, IRSR_appendix - High-speed Rail Network and Changing Industrial Dynamics in Chinese Regions
No full textSupplemental Material, IRSR_appendix for High-speed Rail Network and Changing Industrial Dynamics in Chinese Regions by Shengjun Zhu, Chong Wang, and Canfei He in International Regional Science Review</p
sj-docx-1-jef-10.1177_15589250241242009 – Supplemental material for Recycle waste PET yarn on site by feeding waste yarn as grinded powder to improve product quality, increase energy efficiency and reduce environmental impact
No full textSupplemental material, sj-docx-1-jef-10.1177_15589250241242009 for Recycle waste PET yarn on site by feeding waste yarn as grinded powder to improve product quality, increase energy efficiency and reduce environmental impact by Shenghua Gan, Shunli Xiao, Tong Liu, Chen Wang, Shengjun Li, Yanlin Sun and Yuechao Tang in Journal of Engineered Fibers and Fabrics</p
Characteristics of lightweight geopolymers from microwave curing of basalt and waste glass powder mixtures
No full textIn this paper, the feasibility of employing basalt and waste glass powder as raw materials for geopolymer synthesis was investigated. The impact of room temperature and microwave curing on the comprehensive properties of basalt-based geopolymers was firstly compared. Extending microwave curing time can enhance the compressive strength while exceeding 180 W may lead to adverse effects. The strength achieved after 7 min microwave curing is comparable to that obtained at room temperature for 28 days. The geopolymers displayed a low density (from 1.58 to 1.94 g/cm3), high porosity (∼30 %), and compressive strength ranging from 7.4 − 18.6 MPa
3D interconnect technology based on low temperature copper nanoparticle sintering
No full textWe explore a methodology for patterned copper nanoparticle paste for 3D interconnect applications in wafer to wafer (W2W) bonding. A novel fine pitch thermal compression bonding process (sintering) with coated copper nanoparticle paste was developed. Most of the particle size is between 10-30 nm. Lithographically defined stencil printing using photoresist and lift-off was used to apply and pattern the paste. Variations in sintering process parameters, such as: pressure, geometry and ambient atmosphere, were studied. Compared to Sn-Ag-Cu (SAC) microsolder bumps, we achieved better interconnect resistivity after sintering at 260 °C for 10 min, in a 700 mBar hydrogen forming gas (H2/N2) environment. The electrical resistivity was 7.84 ± 1.45 μΩ·cm, which is about 4.6 times that of bulk copper. In addition, metallic nanoparticle interconnect porosity can influence the electrical properties of the interconnect. Consequently, we investigated the porosity effect on conductivity using finite element simulation. A linear relationship between the equivalent conductivity and particle overlapping ratio was found.Accepted Author ManuscriptElectronic Components, Technology and MaterialsEKL Processin
Finite and infinite time interval BSDEs with non-Lipschitz coefficients
No full textThis paper aims at solving multidimensional backward stochastic differential equations (BSDEs) under weaker assumptions on the coefficients, considering both a finite and an infinite time interval. We establish a general existence and uniqueness result of the solutions to finite and infinite time interval BSDEs with non-Lipschitz coefficients, which generalizes the corresponding results in Mao (1995), Wang and Wang (2003), Wang and Huang (2009), Chen (1997) and Chen and Wang (2000).Backward stochastic differential equation Infinite time interval Non-Lipschitz coefficients Mao's condition Existence and uniqueness
Effluent organic matter in Beijing's WWTPs: characterization and comparison
No full textDissolved organic matter (DOM) in sewage effluents from Beijing's wastewater treatment plants (WWTPs) were characterized and compared. Results revealed that the characteristics of DOM in sewage effluents were related to the nitrification degree, sewage property and the adopted technology of WWTPs. Good nitrification contributed to the degradation of effluent organic matter and increase the humification degree of effluent. The physical entrapment effect of membrane biological reactor (MBR) as well as its longer sludge retention time decreased the humification degree of effluent, while a portion of organic matters with high molecular weight were still retained. Aerobic biofilm with a longer sludge retention time might induce the aggregation of protein-like soluble microbial products. Comparing with municipal domestic sewage, the characteristics of DOM from WWTP feeding with domestic and industrial mixed sewage displayed obvious differences
On the crossing numbers of complete graphs
No full textI hereby declare that I am the sole author of this thesis. This is a true copy of the thesis, including any required final revisions, as accepted by my examiners. I understand that my thesis may be made electronically available to the public. ii In this thesis we prove two main results. The Triangle Conjecture asserts that the convex hull of any optimal rectilinear drawing of Kn must be a triangle (for n � 3). We prove that, for the larger class of pseudolinear drawings, the outer face must be a triangle. The other main result is the next step toward Guy’s Conjecture that the crossing number of Kn is
Impact Assessment of ACIAR-funded Projects on Grain-market Reform in China
No full textCrop Production/Industries, Marketing, Research and Development/Tech Change/Emerging Technologies,
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