International Journal of Health Geographics
·
2023
·Vol. 22
·期 1
·1-19
·
IF 4.9
Grover Elise N.,Allshouse William B.,Lund Andrea J.,Liu Yang,Paull Sara H.,James Katherine A.,Crooks James L.,Carlton Elizabeth J.
Background Although the presence of intermediate snails is a necessary condition for local schistosomiasis transmission to occur, using them as surveillance targets in areas approaching elimination is challenging because the patchy and dynamic quality of snail host habitats makes collecting and testing snails labor-intensive. Meanwhile, geospatial analyses that rely on remotely sensed data are becoming popular tools for identifying environmental conditions that contribute to pathogen emergence and persistence. Methods In this study, we assessed whether open-source environmental data can be used to predict the presence of human Schistosoma japonicum infections among households with a similar or improved degree of accuracy compared to prediction models developed using data from comprehensive snail surveys. To do this, we used infection data collected from rural communities in Southwestern China in 2016 to develop and compare the predictive performance of two Random Forest machine learning models: one built using snail survey data, and one using open-source environmental data. Results The environmental data models outperformed the snail data models in predicting household S. japonicum infection with an estimated accuracy and Cohen’s kappa value of 0.89 and 0.49, respectively, in the environmental model, compared to an accuracy and kappa of 0.86 and 0.37 for the snail model. The Normalized Difference in Water Index (an indicator of surface water presence) within half to one kilometer of the home and the distance from the home to the nearest road were among the top performing predictors in our final model. Homes were more likely to have infected residents if they were further from roads, or nearer to waterways. Conclusion Our results suggest that in low-transmission environments, leveraging open-source environmental data can yield more accurate identification of pockets of human infection than using snail surveys. Furthermore, the variable importance measures from our models point to aspects of the local environment that may indicate increased risk of schistosomiasis. For example, households were more likely to have infected residents if they were further from roads or were surrounded by more surface water, highlighting areas to target in future surveillance and control efforts.
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Journal of the Australian Ceramic Society
·
2019
·Vol. 56
·期 2
·745-749
·
IF 0.692
Zhang Daixiong,Xiang Qing,Wang Xia,Guo Xiaogang,Li Xueming
Co 3 O 4 coating is one of most studied transition metal oxide due to its wide application in many fields such as gas sensors, electrochromic thin films, supercapacitors, and solar selective absorber. Aqueous electrophoretic deposition (EPD), which is considered as a cost-effective and environment-friendly coating technology, was successfully employed in preparing nano-Co 3 O 4 coating in this study. For the EPD process with the solid loading of 1 g L −1 , 2.0 mM nitric acid was employed as suitable additive and 5 V was employed as deposition voltage. The prepared nano-Co 3 O 4 coating exhibited good film characteristics, which was proved by scanning electron microscopy (SEM) technology. The result suggests that a rapid preparation of nano-Co 3 O 4 coating in aqueous dispersion system can be easily accomplished. Moreover, the optimum concentrations of the added nitric acid would increase with the solid loading of Co 3 O 4 nanoparticle, but the growth rate of the former was obviously lower than that of the latter.
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npj Clean Water
·
2020
·Vol. 3
·期 1
·1-10
·
IF 4.87
Zou Chunzhen,Guo Beibei,Zhuang Xuming,Ren Liying,Ni Shou-Qing,Ahmad Shakeel,Qiao Zhuangming,Cui Zhaojie,Hong Jinglan
The effects of FeS on nitrogen removal performance and microbial community of anammox process were studied. During the start-up period, the removal efficiencies of nitrite and total nitrogen were significantly improved by FeS. The addition of FeS increased the content of iron ions in the reactor and promoted the synthesis of heme c , which was involved in the formation of various enzymes. Compared with the control, the abundance of anammox bacteria in the FeS reactor was increased by 29%, and the expression level of the nirS gene (encoding cd 1 type nitrite reductase containing heme) was nearly doubled. The content of nitrite reductase (ammonia-forming) in the community was increased by 26.4%. The difference in functional bacteria and enzyme contents in the microbial community resulted in a difference in nitrogen removal rate (NRR) between the two reactors. High-throughput results indicated that FeS increased the richness and diversity of microbial community and enhanced the metabolic function of the microbial community. The addition of FeS did not change the dominant position of Ca. Kuenenia in both reactors. But the relative abundance of heterotrophic denitrifying bacteria was reduced with FeS, which may be related to the inhibition effect of S 2− produced by FeS.
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MRS Communications
·
2022
·Vol. 12
·期 5
·850-855
·
IF 2.935
Ren Yihong,Zhu Jinxing,Tian Saiqi,Ding Sheng
In order to monitor the wound healing status with the naked eye, a pH-sensitive polyurethane hydrogel (PUH-DCT) was prepared by incorporated with anthocyanins as a wound dressing. Results showed that the color of PUH-DCT changed from pale violet to deep violet then to blue when the pH increased from 5.0 to 9.0. PUH-DCT had good porous structures, mechanical properties, and swelling behavior. PUH-DCT was antibacterial, non-hemolytic, and cytocompatible, which appears very promising applications as a wound dressing. Graphical abstract
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Journal of Coatings Technology and Research
·
2022
·Vol. 19
·期 4
·1211-1218
·
IF 2.339
Xi Shuang,Zhang Yuzhou,Yang Yutu,Tan Xianhua
Recently, slippery liquid-infused porous surfaces (SLIPS) have attracted extensive attention due to their excellent anti-icing performance. However, the unsatisfactory durability resulting from the loss of lubricant hinders its practical application. Here, a micro/nanointegrated lubricant-infused surface combining microcone hole array and TiO 2 porous nanostructure (P-SLIPS) was fabricated, where its inverted pyramid-shaped microgroove can protect the nanoporous structure from being damaged. Experimental results show that with the aid of microcone hole array, the sanding repelling properties of P-SLIPS have dramatically improved with the significantly decreased ice adhesion strength after 7 sanding cycles. In the process of droplet scouring and dynamic icing, the icing phenomenon in P-SLIPS did not occur even after 10 sanding cycles, while this value is 3 sanding cycles in SLIPS. All of these could be attributed to the introduction of microcone array structure, which makes the coating not be completely damaged during the icing/deicing and sanding polishing processes. Thus, the anti-icing durability of the P-SLIPS can be greatly improved.
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JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
·
2022
·Vol. 103
·期 2
·335-344
·
IF 2.606
Ma Yan,Yang Caixia,Liang Enxiang,Wang Guo-Xiang,Zhou Ningbo,Xu Yixue,Wang Wei
In this paper, poly3-acrylamidophenylboronic acid crosslinked acrylamide hydrogel (P(AAPBA-co-AM) gel) with super tensile characteristics was prepared by acrylamide polymerization using 3-aminophenylboric acid as the raw material, which was used in flexible all-solid-state supercapacitors. By altering the crosslinking density, the gel’s tensile strength was optimized. It can be used as an ideal safe and non-toxic solid-state electrolyte for supercapacitors due to its ability to absorb aqueous electrolytes. The specific capacitance of the flexible supercapacitor is 116 F g −1 and the energy density is 16.11 Wh kg −1 . Additionally, the gel created with a solvent content of 65% may withstand a 5000% strain under 170 kPa stress while retaining electrochemical characteristics at various bending angles. This gel has exceptional tensile deformability, making it suitable for supercapacitors with varying needs.
A non-covalent cross-linked flexible P (AAPBA-co-AM) gel was designed to be used as an electrolyte in supercapacitors. The capacitors not only have good electrochemical performance, but also keep stable performance under different degrees of bending and folding.
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Nanoscale Research Letters
·
2021
·Vol. 16
·期 1
·1-10
·
IF 4.703
Feng Yanmin,He Meng,Liu Xia,Wang Wei,Yu Aifang,Wan Lingyu,Zhai Junyi
The output power of the triboelectric nanogenerator (TENG) strongly depends on the performance of triboelectric materials, especially microstructures and functional groups of them. In this work, aiming at the excellent triboelectric ability, alternate-layered MXene composite films-based TENG with abundant fluorine groups(-F) through layer-by-layer stacking are designed and fabricated. Benefitting from the uniform intrinsic microstructure and increased dielectric constant, when the amount of the Nb 2 CT x nanosheets increases to 15 wt%, the TENG based on Nb 2 CT x /Ti 3 C 2 T x composite nanosheets films achieves the maximum output. The short-circuit current density of 8.06 μA/cm 2 and voltage of 34.63 V are 8.4 times and 3.5 times over that of pure Ti 3 C 2 T x films, and 3.3 times and 4.3 times over that of commercial poly(tetrafluoroethylene) (PTFE) films, respectively. Furthermore, the fabricated TENG could be attached to human body to harvest energy from human motions, such as typing, texting, and hand clapping. The results demonstrate that the alternate-layered MXene composite nanosheet films through layer-by-layer stacking possess remarkably triboelectric performance, which broaden the choice of negative triboelectric materials and supply a new choice for high output TENG.
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Reaction Kinetics Mechanisms and Catalysis
·
2022
·Vol. 135
·期 2
·1099-1111
·
IF 1.843
Zhang Hewei,Duan Congcong,Xu Zhen,Yin Jiahang
Herein, the C 60 /Cd 0.5 Zn 0.5 S (C 60 /CZS) photocatalysts with excellent photocatalytic performance were prepared using facile one-pot hydrothermal method. The crystal structure, morphology, photoelectric performance and photocatalytic activity of the samples were characterized by XRD, XPS, UV–Vis and electrochemistry. The catalytic degradation of pollutants under the irradiation of visible light was simulated using Rhodamine B (Rh B). The content of C 60 was changed from 0.5 to 5 wt%, and the optimal value for the photocatalytic activity was determined to be 2 wt%. The apparent degradation rate and degradation efficiency of Rh B were 0.024 min −1 and 97.5% within 140 min, which is 3.4 times that of pure CZS. C 60 /CZS exhibited excellent catalytic performance, and its photocatalytic activity was sustained even after three cycles. Moreover, electrochemical test results demonstrated that the separation and transfer of photocarriers on CZS surface were effectively improved by C 60 , thus enhancing its activity. In this study, we innovatively prepared a novel photocatalyst by combining fullerenes with sulfide solid solution for the first time, which has rarely been studied in the past. The synthetic method is simple, efficient and pollution-free. Subsequently, the catalytic degradation of Rh B experiment confirmed that the catalyst has high catalytic efficiency and stability. This experiment has practical significance not only for the catalytic degradation of Rh B but also for the application of fullerene in photocatalysis.
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AAPS PHARMSCITECH
·
2024
·Vol. 25
·期 7
·1-15
·
IF 3.4
Shi Feng,Gong Mingjie,Adu-Frimpong Michael,Jiang Xia,Wang Xiaowen,Hua Qinyang,Li Tingyuan,Li Jiaying,Yu Jiangnan,Toreniyazov Elmurat,Cao Xia,Wang Qilong,Xu Ximing
In this study, N, N '-bis {4- [(α-L- rhamnosyloxy) benzyl]} thiourea (PG-1), a phenolic glycoside compound was purified from Moringa seed. The PG-1 has attracted extensive attention due to its anti-cancer, antioxidant, anti-inflammatory and hypoglycemic properties. However, some of its physicochemical properties such as oral bioavailability has not been studied. Herein, a highly purified PG-1 was extracted and incorporated in multiple layered liposomes (PG-1-L) to avoid its burst release and enhance oral bioavailability. After appropriate characterization, it was discovered that the obtained PG-1-L was stable, homogeneous and well dispersed with the average particle size being 89.26 ± 0.23 nm. Importantly, the in vitro release and in vivo oral bioavailability of PG-1-L were significantly improved compared with PG-1. In addition, MTT results showed that compared with the free PG-1, PG-1-L displayed obvious inhibitory effect on the HepG2 cells, while the inhibitory effect on healthy non-malignant 3T6 and LO-2 cells was not significant, indicating that PG-1-L had high safety. In conclusion, PG-1-L can be used as a promising delivery system and an ideal novel approach to improve the oral bioavailability and anticancer activity of PG-1. Graphical Abstract
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Nature Communications
·
2024
·Vol. 15
·期 1
·1-9
·
IF 14.7
Su Yusen,Berbille Andy,Li Xiao-Fen,Zhang Jinyang,PourhosseiniAsl MohammadJavad,Li Huifan,Liu Zhanqi,Li Shunning,Liu Jianbo,Zhu Laipan,Wang Zhong Lin
Precious metals are core assets for the development of modern technologies in various fields. Their scarcity poses the question of their cost, life cycle and reuse. Recently, an emerging catalysis employing contact-electrification (CE) at water-solid interfaces to drive redox reaction, called contact-electro-catalysis (CEC), has been used to develop metal free mechano-catalytic methods to efficiently degrade refractory organic compounds, produce hydrogen peroxide, or leach metals from spent Li-Ion batteries. Here, we show ultrasonic CEC can successfully drive the reduction of Ag(ac), Rh 3+ , [PtCl 4 ] 2- , Ag + , Hg 2+ , Pd 2+ , [AuCl 4 ] - , and Ir 3+ , in both anaerobic and aerobic conditions. The effect of oxygen on the reaction is studied by electron paramagnetic resonance (EPR) spectroscopy and ab-initio simulation. Combining measurements of charge transfers during water-solid CE, EPR spectroscopy and gold extraction experiments help show the link between CE and CEC. What’s more, this method based on water-solid CE is capable of extracting gold from synthetic solutions with concentrations ranging from as low as 0.196 ppm up to 196 ppm, reaching in 3 h extraction capacities ranging from 0.756 to 722.5 mg g −1 in 3 h. Finally, we showed CEC is employed to design a metal-free, selective, and recyclable catalytic gold extraction methods from e-waste aqueous leachates.
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MRS Communications
·
2022
·Vol. 12
·期 5
·824-830
·
IF 2.935
Zhuang L. H.,Pei L. Z.,Jiang C. H.,Chen X.,Zhang Y.
Zinc bismuthate/bismuth oxide nanocomposites have been prepared by one-step precipitation method. Zinc bismuthate/bismuth oxide nanocomposites were used as the electrode-modified materials for the benzoic acid electrochemical sensors. The electrochemical properties were analyzed by electrochemical impedance spectroscopy and cyclic voltammetric (CV) method. The results show that the intensity of the CV peaks increases obviously with the increase of benzoic acid concentration and scan rate. The sensor based on the zinc bismuthate/bismuth oxide nanocomposites shows a low detection limit of 0.053 µM at a signal-to-noise ratio of 3, a wide linear range of 0.0002–2 mM, good reproducibility, and stability. Graphical abstract
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JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 36
·17247-17264
·
IF 4.682
Zhou Dong,Hu Shuyu,Xie Chen,Xu Shiqing,Xu Jing,Li Rong,Hu Pengfei
The room-temperature mechanochemical synthesis method was employed to fabricate the AgCl@Ag-NPs and AgCl@AgNPs/TiO 2 composite photocatalysts efficiently. The polyethylene glycol 400 was introduced to adjust the microstructure and layout of nanoparticles to form a large number of heterojunctions or even heterojunction chains between Ag-NPs and AgCl/TiO 2 . The surface plasmon resonance effect of metallic silver nanoparticle extends the absorption spectrum of composite to the visible region. And the metal–semiconductor heterojunction configuration enables the effective separation of electron–hole pairs to endow them strong catalytic activity for degradation of oxytetracycline under man-made natural light irradiation and, meanwhile, suppresses the bleaching of AgCl to give them good microstructural stability and photocatalytic reusability. In the process of photodegradation of oxytetracycline, AgCl@AgNPs/TiO 2 showed the higher catalytic efficiency through fuller synergy compared to AgCl@AgNPs. This work lays out a green degradation strategy for antibiotics in the ecological environment. Graphical abstract
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