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1. Occupation density estimation for noisy high-frequency data

Author:
Jia Li,   et al.   ; Congshan Zhang; Tim Bollerslev;     Show all 3 Authors
Source:
Journal of econometrics 2022 v.227 no.1 pp. 189-211
ISSN:
0304-4076
Subject:
assets; econometric models; economic analysis; economic theory; markets; methodology; prices; risk
Abstract:
... This paper studies the nonparametric estimation of occupation densities for semimartingale processes observed with noise. As leading examples we consider the stochastic volatility of a latent efficient price process, the volatility of the latent noise that separates the efficient price from the actually observed price, and nonlinear transformations of these processes. Our estimation methods are de ...
DOI:
10.1016/j.jeconom.2020.05.013

2. A sensor combination based automatic sorting system for waste washing machine parts

Author:
Jia Li,   et al.   ; Wenjie Tan; Qinyuan Duan; Linpeng Yao;     Show all 4 Authors
Source:
Resources, conservation, and recycling 2022 v.181 pp. 106270
ISSN:
0921-3449
Subject:
automation; electronic wastes; near-infrared spectroscopy; polypropylenes; polystyrenes; principal component analysis; styrene; support vector machines
Abstract:
... In order to solve the difficulties encountered in E-wastes disposal automation, this work investigates the sensor-based sorting of waste washing machine parts. To satisfy the post-processing, we divided the parts into 6 categories (Piece, Cover, Base, Shell, Spin tub and Drain hose) based on the shape differences and used object recognition algorithm to classify them. In the recycling terminal, pa ...
DOI:
10.1016/j.resconrec.2022.106270

3. Cooperation and competition between CRISPR- and omics-based technologies in foodborne pathogens detection: a state of the art review

Author:
Jia Li,   et al.   ; Yang Sun; Liying Zhu; Ling Jiang;     Show all 4 Authors
Source:
Current opinion in food science 2022 v.44 pp. 100813
ISSN:
2214-7993
Subject:
food matrix; food safety; foodomics; gene editing; genes; humans; traceability
Abstract:
... Foodborne pathogens are the main factors causing food safety incidents. Rapid and accurate detection of foodborne pathogens is of great significance to the protection of human life and health. Food omics have been widely used in food safety detection, traceability, and other fields. While the CRISPR-based technologies have a broad application prospect in the detection of foodborne pathogens. Futur ...
DOI:
10.1016/j.cofs.2022.100813

4. Evaluation of Volitional Swimming Behavior of Schizothorax prenanti Using an Open-Channel Flume with Spatially Heterogeneous Turbulent Flow

Author:
Jia Li,   et al.   ; Minne Li; Ruidong An; Min Chen;     Show all 4 Authors
Source:
Animals 2022 v.12 no.6 pp. -
ISSN:
2076-2615
Subject:
Schizothorax prenanti; energy conservation; fish; fish behavior; fish ladders; hydraulic flumes; kinetic energy; turbulent flow
Abstract:
... Effective fishway design requires knowledge of fish swimming behavior in streams and channels. Appropriate tests with near-natural flow conditions are required to assess the interaction between fish behavior and turbulent flows. In this study, the volitional swimming behavior of S. prenanti was tested and quantified in an open-channel flume with three (low, moderate, and high) flow regimes. The re ...
DOI:
10.3390/ani12060752

5. Variation and efficiency of high-frequency betas

Author:
Jia Li,   et al.   ; Congshan Zhang; Viktor Todorov; George Tauchen;     Show all 4 Authors
Source:
Journal of econometrics 2022 v.228 no.1 pp. 156-175
ISSN:
0304-4076
Subject:
common markets; econometrics; empirical research; estimation; paper
Abstract:
... This paper studies the efficient estimation of betas from high-frequency return data on a fixed time interval. Under an assumption of equal diffusive and jump betas, we derive the semiparametric efficiency bound for estimating the common beta and develop an adaptive estimator that attains the efficiency bound. We further propose a Hausman type test for deciding whether the common beta assumption i ...
DOI:
10.1016/j.jeconom.2020.05.022

6. Nucleation roles of cellulose nanocrystals and chitin nanocrystals in poly(ε-caprolactone) nanocomposites

Author:
Jia Li,   et al.   ; Defeng Wu;     Show all 2 Author
Source:
International journal of biological macromolecules 2022 v.205 pp. 587-594
ISSN:
0141-8130
Subject:
biodegradability; cellulose; chitin; crystallization; nanocrystals; polymer nanocomposites
Abstract:
... Using polysaccharide nanocrystals such as chitin nanocrystals (ChNCs) or cellulose nanocrystals (CNCs) as fillers of biodegradable aliphatic polyesters is an attractive approach of fabricating completely biodegradable nanocomposites. Most aliphatic polyesters are semi-crystalline and hence to reveal the effect of nanocrystals on their crystallization behaviors is key to regulate final properties o ...
DOI:
10.1016/j.ijbiomac.2022.02.123

7. Comparison of calcium and ultrasonic treatment on fruit firmness, pectin composition and cell wall-related enzymes of postharvest apricot during storage

Author:
Jia Li,   et al.   ; Mengpei Liu; Wei Zong; Wenwen Sun; Wenjuan Mo; Shaofeng Li;     Show all 6 Authors
Source:
Journal of food science and technology 2022 v.59 no.4 pp. 1588-1597
ISSN:
0022-1155
Subject:
apricots; calcium; catechol oxidase; firmness; fruit quality; fruits; juices; pectinesterase; pectins; peroxidase; polygalacturonase; ultrasonic treatment; water solubility
Abstract:
... This study was conducted to examine the effects of calcium treatment (2%, 20 min) and ultrasonic treatment (400 W, 20 min) on postharvest apricot fruit during storage. The results showed that after calcium and ultrasonic treatment, compared with the control, the firmness of apricot fruit increased by 41.53% and 3.83% at 16 d, but juice yield and water-soluble pectin (WSP) content decreased by 8.26 ...
DOI:
10.1007/s13197-021-05170-w

8. Oxidative stress and antioxidant mechanisms of obligate anaerobes involved in biological waste treatment processes: A review

Author:
Jia Li,   et al.   ; Xiaochuan Ran; Mingda Zhou; Kaichong Wang; Han Wang; Yayi Wang;     Show all 6 Authors
Source:
Science of the total environment 2022 v.838 pp. 156454
ISSN:
0048-9697
Subject:
Archaea; anaerobes; anaerobic ammonium oxidation; antioxidant activity; antioxidants; biotechnology; environment; industry; methanogens; nitrogen; oxidative stress; oxygen; sludge; waste treatment; wastewater
Abstract:
... In-depth understanding of the molecular mechanisms and physiological consequences of oxidative stress is still limited for anaerobes. Anaerobic biotechnology has become widely accepted by the wastewater/sludge industry as a better alternative to more conventional but costly aerobic processes. However, the functional anaerobic microorganisms used in anaerobic biotechnology are frequently hampered b ...
DOI:
10.1016/j.scitotenv.2022.156454

9. Research on the Impact of Factor Flow on Urban Land Use Efficiency from the Perspective of Urbanization

Author:
Jia Li,   et al.   ; Xinhai Lu; Zhenxing Shi; Junhao Dong; Mingjie Song; Jiao Hou;     Show all 6 Authors
Source:
Land 2022 v.11 no.3 pp. -
ISSN:
2073-445X
Subject:
capital; labor; land; land use; models; urbanization; China; Yangtze River
Abstract:
... Researching the impact of factor flow on urban land use efficiency (ULUE) is significant in alleviating the contradiction between the accelerated promotion of urbanization and the inefficient use of urban land. This paper theoretically analyzes the impact mechanism of the flow of the three major factors of production—land, capital, and labor—on ULUE. On this basis, taking 54 cities in the urban ag ...
DOI:
10.3390/land11030389

10. The molecular dynamics during gelation of resorcinol and formaldehyde as studied by dielectric relaxation

Author:
Jia Li,   et al.   ; Xi Yang; Lei Yuan; Zhaoguo Li; Yong Zeng; Hao Shen;     Show all 6 Authors
Source:
Colloids and surfaces 2022 v.648 pp. 129300
ISSN:
0927-7757
Subject:
condensation reactions; formaldehyde; gelation; gels; growth models; molecular dynamics; particle size; resorcinol; spectroscopy; temperature
Abstract:
... The gelation of resorcinol and formaldehyde (RF) consists of four secondary processes with no well-defined time boundaries. The growth kinetics of RF gel processes are still many unknown areas. In this work, the sol-gel polycondensation reaction of RF was analyzed by dynamic light scattering (DLS), rheological measurements, and dielectric relaxation spectroscopy (DRS). Through in situ analysis, so ...
DOI:
10.1016/j.colsurfa.2022.129300

11. Uptake and accumulation of naphthalene, phenanthrene, and benzo(b)fluoranthene in winter wheat affected by foliar exposure at different growth stages

Author:
Jia Li,   et al.   ; Jinfeng Wang; Huanyu Bao; Jun Cai; Jiao Li; Fuyong Wu;     Show all 6 Authors
Source:
Environmental science and pollution research 2022 v.29 no.31 pp. 47617-47628
ISSN:
0944-1344
Subject:
Triticum aestivum; biomass; foliar uptake; leaf area; lipophilicity; naphthalene; phenanthrenes; pollution; research; risk; vegetative growth; winter wheat
Abstract:
... Foliar uptake, as an important pathway of polycyclic aromatic hydrocarbons (PAHs) accumulation in winter wheat, has a great contribution to wheat PAHs, which mainly depends on atmospheric PAHs level. An indoor simulation experiment was conducted to explore the effects of foliar exposure to PAHs at different growth stages on PAHs uptake in wheat. Three levels (0, 0.75, 4.5 mg L⁻¹) of mixed solution ...
DOI:
10.1007/s11356-022-19263-2

12. A multifunctional nanoprobe for real-time SERS monitoring of invasion ability affected by photodynamic therapy

Author:
Jia Li,   et al.   ; Yang Tian; Tingting Zheng;     Show all 3 Authors
Source:
Chemical communications 2022 v.58 no.45 pp. 6542-6545
ISSN:
1364-548X
Subject:
Raman spectroscopy; cell lines; glioblastoma; models; photochemotherapy
Abstract:
... A multifunctional RhB-PLGM@CN nanoprobe was created, in which g-C₃N₄ played dual pivotal functions in photodynamic therapy (PDT) and monitoring of invasion-related MMP-9 by surface-enhanced Raman spectroscopy. Significantly, using this probe, PDT was found to inhibit the cell invasion in a glioblastoma multiforme cell line model by down regulation of MMP-9. ...
DOI:
10.1039/d2cc01140a

13. Chemical degrader enhances the treatment of androgen receptor-positive triple-negative breast cancer

Author:
Jia Li,   et al.   ; Yingchun Wu; Jinqiu Xue;     Show all 3 Authors
Source:
Archives of biochemistry and biophysics 2022 v.721 pp. 109194
ISSN:
0003-9861
Subject:
androgen receptors; androgens; biophysics; breast neoplasms; cell viability; drug resistance; proteolysis; therapeutics
Abstract:
... Androgen receptor (AR) is a promising therapeutic target for AR-positive triple-negative breast cancer (TNBC). However, clinical trials of AR inhibitors only reveal modest therapeutic efficacy for AR-positive TNBC, and drug resistance is also inevitable. To address these challenges, we herein report the use of an AR-targeting proteolysis targeting chimera (AR-PROTAC) to treat AR-positive TNBC. We ...
DOI:
10.1016/j.abb.2022.109194

14. Evaluating performance dependency of a geomorphologic instantaneous unit hydrograph-based hydrological model on DEM resolution

Author:
Zhi-jia Li,   et al.   ; Cheng Yao; Ke Zhang; Ying-chun Huang; Jing-feng Wang; Satish Bastola;     Show all 6 Authors
Source:
Water Science and Engineering 2022 pp. -
ISSN:
1674-2370
Subject:
digital elevation models; hydrograph; hydrologic models; landscapes; model validation; water
Abstract:
... The digital elevation model (DEM) is a type of model that has been widely used in terrain analysis and hydrological modeling. DEM resolution influences the hydrological and geomorphologic features of delineated catchments and consequently affects hydrological simulations. This study investigated the impacts of DEM resolution on the performance of the XAJ-GIUH hydrological model, a model coupling t ...
DOI:
10.1016/j.wse.2022.04.002

15. Improved osseointegration of strontium-modified titanium implants by regulating angiogenesis and macrophage polarization

Author:
Jia Li,   et al.   ; Wei Lu; Chuan Zhou; Yang Ma; Jimin Jiang; Yanqi Chen; Lingqing Dong; Fuming He;     Show all 8 Authors
Source:
Biomaterials science 2022 v.10 no.9 pp. 2198-2214
ISSN:
2047-4849
Subject:
angiogenesis; biocompatible materials; bone formation; macrophages; orthopedics; phenotype; phosphorylation; platelet-derived growth factor; secretion; therapeutics; titanium
Abstract:
... Strontium (Sr) has shown strong osteogenic potential and thereby been widely incorporated into dental and orthopedic implants. However, the improved osseointegration of strontium-modified titanium implants through regulation of angiogenesis and macrophage polarization is still beginning to be explored. Here, we demonstrated that the angiogenic capacity of human umbilical vein endothelial cells on ...
DOI:
10.1039/d1bm01488a

16. Insight into melting point depression of polylactide nanocomposites with acetylated chitin nanocrystals

Author:
Jia Li,   et al.   ; Yuankun Wang; Zhifeng Wang; Defeng Wu;     Show all 4 Authors
Source:
Carbohydrate polymers 2021 v.273 pp. 118594
ISSN:
0144-8617
Subject:
acetylation; biodegradability; chitin; crystallization; nanocomposites; nanocrystals; polylactic acid
Abstract:
... Chitin nanocrystal (ChNC) was used to prepare fully biodegradable nanocomposites with polylactide (PLA). The nucleation and melting behavior of nanocomposites were studied with the objective to correlate PLA-ChNC affinity to PLA crystallization. The results disclose that the PLA nanocomposites with pristine ChNCs and the ones with acetylated ChNCs show completely different nucleation and melting b ...
DOI:
10.1016/j.carbpol.2021.118594

17. Wind speed modeling for cascade clusters of wind turbines Part 2: Wind speed reduction and aggregation superposition

Author:
Jia Li,   et al.   ; Xinghui Dong; Di Gao; Kai Zheng;     Show all 4 Authors
Source:
Energy 2021 v.215 pp. 119145
ISSN:
0360-5442
Subject:
energy conversion; friction; models; wind power; wind speed
Abstract:
... Wind speed calculation is not only the core problem of the wind energy conversion, but also the key to improve the WT conversion efficiency. Wind speed is affected by many factors, so it is difficult to model. The influencing factors of the wind speed and relationship between wind speed are contained in big data of the WTs’ historical monitoring. In this paper, the “coupling element” (CE) and “agg ...
DOI:
10.1016/j.energy.2020.119145

18. Optimal Frequency for Changing Single-Use Enteral Delivery Sets in Infants after Congenital Heart Surgery: A Randomized Controlled Trial

Author:
Jia Li,   et al.   ; Linfang Zhang; Hui Shi; Na Du; Xiuchun Chen; Jielin Wang; Xiurong Gao; Wenyue Si; Yanqin Cui;     Show all 9 Authors
Source:
Journal of the American Nutrition Association 2022 v.41 no.2 pp. 140-148
ISSN:
2769-707X
Subject:
bacterial colonization; cost effectiveness; dysbiosis; enteral feeding; gastrointestinal system; heart; heart diseases; intestinal microorganisms; milk; patients; randomized clinical trials; surgery
Abstract:
... Objective We aimed to assess the optimal frequency for changing single-use enteral delivery sets during postoperative enteral feeding in infants with congenital heart disease (CHD). Methods We enrolled 120 CHD infants who were fed using an enteral nutrition pump directly connected to a milk bottle with a single-use enteral delivery set in a four-arm randomized controlled trial (ChiCTR2000039544). ...
DOI:
10.1080/07315724.2020.1852129

19. Response of Soil Enzyme Activities to Natural Vegetation Restorations and Plantation Schemes in a Landslide-Prone Region

Author:
Jia Li,   et al.   ; Donglei Guo; Yansheng Ou; Xiaohe Zhou; Xia Wang; Yunfei Zhao; Jinjin Xiao; Zhiguo Hao; Kaichang Wang;     Show all 9 Authors
Source:
Forests 2022 v.13 no.6 pp. -
ISSN:
1999-4907
Subject:
carbon; ecological restoration; ecosystems; enzymes; forest land; grasslands; land use; landslides; nitrogen; phosphorus; soil enzymes; soil quality; China
Abstract:
... Soil enzyme activities in different plantation types and land use patterns could indicate changes in soil quality. This research was aimed at exploring the dynamics of soil enzyme activities involved in carbon, nitrogen and phosphorus cycling, and their responses to changes in soil physicochemical properties resulting from natural vegetation restorations and plantation schemes. Knowing about the e ...
DOI:
10.3390/f13060880

20. Accelerated Oxidation of Organic Sulfides by Microdroplet Chemistry

Author:
Jia Li,   et al.   ; Chengyuan Liu; Hao Chen; Richard N. Zare;     Show all 4 Authors
Source:
Journal of organic chemistry 2021 v.86 no.7 pp. 5011-5015
ISSN:
1520-6904
Subject:
ambient temperature; atomization; ionization; mass spectrometry; methanol; methionine; nuclear magnetic resonance spectroscopy; organic chemistry; oxidation; sodium hypochlorite; sulfides; sulfoxides; ultrasonics
Abstract:
... We report the rapid oxidation of organic sulfides to sulfoxides by means of microdroplet chemistry at room temperature using a spray solution containing an organic sulfide dissolved in water/methanol, dilute (11%–14%) sodium hypochlorite (NaClO), and 5% chloroauric acid (HAuCl₄). Ultrasonic nebulization, easy ambient sonic-spray ionization, or electrosonic spray ionization serves as the microdropl ...
DOI:
10.1021/acs.joc.0c02942