8 results on '"Cai, Linlin"'
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2. Sugarcane bagasse amendment improves the quality of green waste vermicompost and the growth of Eisenia fetida.
- Author
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Cai, Linlin, Sun, Xiangyang, Hao, Dan, Li, Suyan, Gong, Xiaoqiang, Ding, Hao, and Yu, Kefei
- Abstract
Vermicomposting is a feasible method for disposing of lignocellulosic waste while generating a useful product. The current study assessed the potential of vermicomposting green waste mixed with sugarcane bagasse in proportions of 25%, 50%, and 75% (v:v, based on dry weight). The suitability was evaluated based on the agrochemical properties, earthworm biomass, and phytotoxicity. The final vermicomposts exhibited near-neutral pH values (7.1–7.6), and lower EC values (0.43–0.72 mS/cm) and C:N ratios (14.1–19.9).The content of available nutrients and CEC for all the vermicomposts exceeded those of the control compost (without earthworms). For vermicomposts, the average values of NO
3 − -N, AP, AK, and CEC were 53, 517, 1362 mg/kg, and 158 cmol/kg, respectively. The total contents of heavy metals increased in all vermicompost treatments compared to control composts with the following average final percentages: Zn (2.0%), Cr (15.5%), Pb (23.4%), and Cu (44.3%), but these amounts were safe for application in agroforestry. The addition of sugarcane bagasse to green waste significantly increased the content of total humic substance, humic acid and urease activity, acid and alkaline phosphatase activity, and Eisenia fetida reproduction. The addition of 25% sugarcane bagasse to green waste decreased the toxicity to germinating seeds. These results revealed that vermicomposting is a feasible way to degrade green waste into a value-added chemical product. [ABSTRACT FROM AUTHOR]- Published
- 2020
- Full Text
- View/download PDF
3. Tensile, Creep, and Fatigue Behaviors of 3D-Printed Acrylonitrile Butadiene Styrene.
- Author
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Zhang, Hanyin, Cai, Linlin, Golub, Michael, Zhang, Yi, Yang, Xuehui, Schlarman, Kate, and Zhang, Jing
- Subjects
ACRYLONITRILE butadiene styrene resins ,THERMOPLASTICS ,THREE-dimensional printing ,MATERIAL fatigue ,CREEP (Materials) ,MEASUREMENT of tensile strength ,EQUIPMENT & supplies - Abstract
Acrylonitrile butadiene styrene (ABS) is a widely used thermoplastics in 3D printing. However, there is a lack of thorough investigation of the mechanical properties of 3D-printed ABS components, including orientation-dependent tensile strength and creep fatigue properties. In this work, a systematic characterization is conducted on the mechanical properties of 3D-printed ABS components. Specifically, the effect of printing orientation on the tensile and creep properties is investigated. The results show that, in tensile tests, the 0° printing orientation has the highest Young's modulus of 1.81 GPa, and ultimate strength of 224 MPa. In the creep test, the 90° printing orientation has the lowest k value of 0.2 in the plastics creep model, suggesting 90° is the most creep resistant direction. In the fatigue test, the average cycle number under load of 30 N is 3796 cycles. The average cycle number decreases to 128 cycles when the load is 60 N. Using the Paris law, with an estimated crack size of 0.75 mm, and stress intensity factor is varied from 352 to 700 $$N\sqrt m$$ , the derived fatigue crack growth rate is 0.0341 mm/cycle. This study provides important mechanical property data that is useful for applying 3D-printed ABS in engineering applications. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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- View/download PDF
4. A physics-based electromigration reliability model for interconnects lifetime prediction.
- Author
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Cai, Linlin, Chen, Wangyong, Kang, Jinfeng, Du, Gang, Liu, Xiaoyan, and Zhang, Xing
- Published
- 2021
- Full Text
- View/download PDF
5. Genetic manipulation of a high-affinity PHR1 target cis-element to improve phosphorous uptake in Oryza sativa L.
- Author
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Ruan, Wenyuan, Guo, Meina, Cai, Linlin, Hu, Hongtao, Li, Changying, Liu, Yu, Wu, Zhongchang, Mao, Chuanzao, Yi, Keke, Wu, Ping, and Mo, Xiaorong
- Abstract
Phosphorus (P) is an essential macronutrient for crop development and production. Phosphate starvation response 1 (PHR1) acts as the central regulator for Pi-signaling and Pi-homeostasis in plants by binding to the cis-element PHR1 binding sequence (P1BS; GNATATNC). However, how phosphate starvation-induced gene expression is regulated remains obscure. In this work, we investigated the DNA binding affinity of the PHR1 ortholog OsPHR2 to its downstream target genes in Oryza sativa (rice). We confirmed that a combination of P1BS and P1BS-like motifs are essential for stable binding by OsPHR2. Furthermore, we report that variations in P1BS motif bases affected the binding affinity of OsPHR2 and that the highest affinity motif was GaATATtC (designated the A-T-type P1BS). We also found that a combination of two A-T-type P1BS elements in tandem, namely HA-P1BS, was very efficient for binding of OsPHR2. Using the cis-regulator HA-P1BS, we modified the promoters of Transporter Traffic Facilitator 1 ( PHF1), a key factor controlling endoplasmic reticulum-exit of phosphate transporters to the plasma membrane, for efficient uptake of phosphorous in an energetically neutral way. Transgenic plants with the modified promoters showed significantly enhanced tolerance to low phosphate stress in both solution and soil conditions, which provides a new strategy for crop improvement to enhance tolerance of nutrient deficiency. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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6. Matching Schemas for Geographical Information Systems Using Semantic Information.
- Author
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Meersman, Robert, Tari, Zahir, Herrero, Pilar, Quix, Christoph, Ragia, Lemonia, Cai, Linlin, and Gan, Tian
- Abstract
Integration and interoperability is a basic requirement for geographic information systems (GIS). The web provides access to geographic data in several ways: on the one hand, web-based interactive GIS applications provide maps and routing information to end users; on the other hand, the data of some GIS can be accessed in a programmatic way using a web service. Thereby, the data is made available for other GIS applications. However, integrating data from various sources is a tedious task which requires the mapping of the involved schemas as a first step. Schema matching analyzes and identifies similarities of two schemas, but all approaches can be only semi-automatic as human intervention is required to verify the result of a schema matching algorithm. In this paper, we present an approach that improves the matching result of existing solutions by using semantic information provided by the context of the geographic application. This reduces the effort for manually correcting the results which has been validated in several application examples. [ABSTRACT FROM AUTHOR]
- Published
- 2006
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7. Multiparametric bifurcations of an epidemiological model with strong Allee effect.
- Author
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Cai, Linlin, Chen, Guoting, and Xiao, Dongmei
- Subjects
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EPIDEMIOLOGICAL models , *BIFURCATION theory , *PARAMETER estimation , *ALLEE effect , *EQUILIBRIUM , *COMPUTER simulation - Abstract
In this paper we completely study bifurcations of an epidemic model with five parameters introduced by Hilker et al. (Am Nat 173:72-88, ), which describes the joint interplay of a strong Allee effect and infectious diseases in a single population. Existence of multiple positive equilibria and all kinds of bifurcation are examined as well as related dynamical behavior. It is shown that the model undergoes a series of bifurcations such as saddle-node bifurcation, pitchfork bifurcation, Bogdanov-Takens bifurcation, degenerate Hopf bifurcation of codimension two and degenerate elliptic type Bogdanov-Takens bifurcation of codimension three. Respective bifurcation surfaces in five-dimensional parameter spaces and related dynamical behavior are obtained. These theoretical conclusions confirm their numerical simulations and conjectures by Hilker et al., and reveal some new bifurcation phenomena which are not observed in Hilker et al. (Am Nat 173:72-88, ). The rich and complicated dynamics exhibit that the model is very sensitive to parameter perturbations, which has important implications for disease control of endangered species. [ABSTRACT FROM AUTHOR]
- Published
- 2013
- Full Text
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8. Geochemical Characteristics of Amino Acids in Sediments of Lake Taihu, A Large, Shallow, Eutrophic Freshwater Lake of China.
- Author
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Yao, Xin, Zhu, Guangwei, Cai, Linlin, Zhu, Mengyuan, Zhao, Linlin, Gao, Guang, and Qin, Boqiang
- Abstract
To examine the biogeochemistry of amino acids (AAs) in the sediment of Lake Taihu, surface sediments (0-3 cm) and deeper sediments (18-21 cm) were collected at 21 sites from different ecotype zones of the lake. AAs were extracted from the sediments, and the total hydrolyzable amino acids (THAA) were determined by high-performance liquid chromatography instrument. The THAA contents in Taihu sediment were much lower than that in marine sediments, ranging from 6.84 to 38.24 μmol g in surface sediments and from 2.91 to 18.75 μmol g in deeper sediments in Taihu, respectively. AAs were a major fraction of the organic matter (OM) and organic nitrogen in Taihu sediments. The AAs on average contributed 8.2% of organic carbon (OC) and 25.0% of total nitrogen (TN) from surface sediments, and 5.9% of OC and 20.5% of TN in deeper sediments, respectively. AA composition provided very useful information about the degradation of OM. Glycine (Gly) and lysine (Lys) were the predominant forms of AAs in the sediments, irrespective of lake regions, followed by alanine, glutamic acid, serine (Ser), and aspartic acid (Asp). The high concentrations of Gly, Lys, and Ser suggested that these forms of AAs were relatively refractory during OM degradation in sediments. The relationship between the Asp/Gly ratio and Ser + Thr [mol%] indicated that OM in surface sediment was relatively fresher than that in deeper sediments. The AAs-based degradation index (DI) gave a similar conclusion. The composition and DI of AAs in surface sediments are markedly different across different zones in Taihu. The percentages of AAs to organic carbon (AA-C%) and total nitrogen (AA-N%) were higher in phytoplankton-dominated zones than those in macrophyte-dominated zones. These results suggest that DI could provide useful information about the degradation of OM in shallow lakes such as Taihu. [ABSTRACT FROM AUTHOR]
- Published
- 2012
- Full Text
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