Reaction Kinetics Mechanisms and Catalysis
·
2019
·Vol. 128
·期 2
·681-693
·
IF 1.428
Xie Chong,Yang Shenghui,Shi Jian-Wen,Niu Chunming
A novel MnO x –TiO 2 catalyst with hollow silkworm structure was synthesized successfully via an ethanol-thermal strategy by using activated carbon fiber felt as template for the first time. The silkworm-like MnO x –TiO 2 catalyst (MnTi) exhibited higher NO x conversion in the whole experimental temperature region (90–330 °C) under a high space velocity of 36,000 h −1 in comparison with the common MnO x –TiO 2 catalyst without hollow silkworm structure (MnTi-B). The excellent catalytic performance of MnTi can be attributed to its high specific surface area, large content of active surface oxygen species (O S ), and more surface acid sites. In addition, the MnTi catalyst also exhibited excellent resistance to water or SO 2 poisoning.
研究领域:
催化化学
·
环境科学
✓ 已验证
DOI
高影响因子
npj Clean Water
·
2025
·Vol. 8
·期 1
·1-12
·
IF 11.4
Zhao Che,Xiao Yaoxin,Gu Ying,Wang Yazhuo,Lian Xixi,Liang Dong,Shan Rui,Yuan Haoran
Interfacial solar desalination has been widely considered as a promising technology for fresh water production because of its green, pollution-free and sustainable characteristics. Compared with the 2D solar evaporator, the 3D solar evaporator has a larger evaporation area. But traditional 3D evaporators could not utilize solar energy effectively due to its inefficient internal and peripheral spaces. Consequently, based on silk cocoon shell and its natural cavity structure, a 3D solar evaporator with internal and external double evaporation interface was designed and manufactured in this paper. The prepared evaporator had double evaporation surfaces which increased the actual evaporation area and the conversion efficiency of solar energy. Besides, the evaporator of Up-FSCE exhibited excellent thermal management performance, its evaporation rate reached 2.32 kg m −2 h −1 under 1 sun illumination. This study offers new insights into the structural design of 3D solar evaporators and further promotes the practical application of interfacial solar desalination.
研究领域:
环境科学
·
材料科学
·
能源工程
·
可持续技术
·
水处理技术
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2024
·Vol. 25
·期 17
·9263
·
IF 4.9
Xiang Chen,Jiaqi Liu,Yaru Lu,Huijun Liu,Lan Cheng,Zhi Li,Fangyin Dai
The use of biodegradable materials combined with natural metabolites in wound dressings has received much attention. Flavonoids (FLs) from green cocoons, as metabolites, have antibacterial, antioxidant, anti-inflammatory, and other pharmacological effects. In this study, composite membranes of FL-loaded polylactic glycolic acid (PLGA)/silk fibroin (SF) were prepared by an electrospinning method. The prepared membranes, including SF, exhibited a good slow-release effect and cytocompatibility. An in vitro evaluation of the FL-loaded PLGA/SF membranes demonstrated good antioxidant, antibacterial, and anti-inflammatory properties. Animal experiments showed that the wound healing rate of PLGA/SF-2.5FL membranes within 15 days was 97.3%, and that of the control group was 72.5%. The PLGA/SF-2.5FL membranes shortened the inflammatory period of a full-layer wound model and promoted skin regeneration and wound healing by downregulating expression of the pro-inflammatory cytokines IL-1β and TNF-α and promoting expression of the growth factors VEGF, TGF-β, and EGF. In summary, the PLGA/SF-2.5FL composite nanofibre membrane with anti-inflammatory properties is an ideal wound dressing to promote acute wound healing.
研究领域:
生物医学工程
·
药理学
·
材料科学
·
组织工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BIOCONTROL
·
2021
·Vol. 67
·期 1
·1-13
·
IF 3.571
Zhang Hao,Wang Jin-Yan,Chen Yi-Juan,Siemann Evan,Ji Xiang-Yun,Jiang Jie-Xian,Wan Nian-Feng
The effects of plant volatiles on parasitoids are important with regards to the tri-trophic interactions among host plants, insect herbivores, and their natural enemies. However, the effects of plant volatiles on the important parasitoid ( Microplitis pallidipes Szépligeti; Hymenoptera: Braconidae) of noctuids have not been determined at the molecular, laboratory, and outdoor scales with complementary approaches. The odorant binding protein 8 of M. pallidipes (MpOBP8) with an open reading frame of 459 bp was cloned and successfully expressed in Escherichia coli (Eubacteriales: Enterobacteriaceae). The purified protein MpOBP8 had a relatively high binding capacity to the plant volatile β- ionone (Ki value was 28.86 μM) in the fluorescence competitive binding assay. Meanwhile, Y-tube olfactometer experiments indicated that β- ionone selectively attracts the parasitic wasp as the ratio of M. pallidipes selecting β- ionone vs. control was 2:1. Likewise, field screenhouse experiments verified the above results as the ratio of M. pallidipes selecting β- ionone vs. control was close to 2:1. This study suggested that β- ionone is a plant volatile that attracts the parasitoid M. pallidipes , and MpOBP8 may play a key role in the discrimination of M. pallidipes in searching for hosts via β- ionone. In general our results suggest that β- ionone has the potential to enhance the biocontrol effect of parasitoids on insect herbivores.
研究领域:
昆虫学
·
分子生物学
·
生态学
·
农业科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yuanchan Yu,Fangxiang Song,Maofa Yang,Shuang Tian,Xiangyu Ji,Xiaofei Yu,Jianfeng Liu,Feng Zhu,Yan Li
The utilization of highly efficient and ecofriendly stimulus-responsive delivery systems for pesticides represents a powerful strategy for enhancing their efficacy and environmental safety. In this study, the application of emamectin benzoate (EB)-loaded amino-functionalized rough mesoporous silica (KMSNs)@poly(glycidyl methacrylate-co-acrylic acid) (PMA) composites (KMSNs@PMA@EB, 6.52 % loading capacity for EB) to control efficacy for Spodoptera frugiperda was investigated in detail. The results showed that, KMSNs@PMA@EB rapidly released EB under acidic and high-temperature conditions. compared with EB and commercial formulations, a solution of KMSNs@PMA@EB with the agricultural organosilicon additive exhibited excellent wetting. Compared with MSNs, KMSNs@PMA significantly enhanced the effective deposition. Moreover, the photostability of KMSNs@PMA@EB was improved by 1.87-fold and 2.25-fold compared to EB and an EB suspension concentrate (EB SC). S. frugiperda larvae preferred corn leaves with low concentrations (0.125 mg/L) of KMSNs@PMA@EB than EB-treated. Bioassays revealed that KMSNs@PMA@EB maintained > 37 % control efficiency after 21 d of spraying, KMSNs@PMA@EB exhibited significantly greater insecticidal activity and persistence against S. frugiperda than commercial formulations. After 21 days of application, the final deposition rates of KMSNs@PMA@EB were lower than the maximum residual limit of EB, spraying KMSNs@PMA@EB has a lower impact on corn plants. Furthermore, biological safety assessments confirmed that KMSNs@PMA@EB did not affect the maize seed germination and growth and posed a low risk to Microplitis manilae . Those results highlight that the advantages of KMSNs@PMA@EB nanoparticles multidimensional enhancement of pesticide efficacy, persistence, and safety to parasitic wasps and has great potential to be used in pest control combining parasitoid and nanopesticides.
研究领域:
农业科学
·
纳米技术
·
害虫管理
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY
·
2023
·
IF 4.7
Yan Song,Fengming Gu,Yijiangcheng Li,Weihong Zhou,Fu-an Wu,Jun Wang,Sheng Sheng
The general cutworm, Spodoptera litura (Lepidoptera: Noctuidae) is a worldwide destructive omnivorous pest and the endoparasitoid wasp Meteorus pulchricornis (Hymenoptera: Braconidae) is the dominant endoparasitoid of S. litura larvae. Trehalase is a key enzyme in insect trehalose metabolism and plays an important role in the growth and development of insects. However, the specific function of trehalase in parasitoid and host associations has been less reported. In this study, we obtained two trehalase genes ( SlTre1 and SlTre2 ) from our previously constructed S. litura transcriptome database; they were highly expressed in 3rd instar larvae. SlTre1 was mainly expressed in the midgut, and SlTre2 was expressed highest in the head. SlTre1 and SlTre2 were highly expressed 5 days after parasitization by M. pulchricornis . Treatment with the trehalase inhibitor validamycin A significantly inhibited the expression levels of SlTre1 and SlTre2 , and the trehalase activity. Besides, the content of trehalose was increased but the content of glucose was decreased 24 h after validamycin A treatment in parasitized S. litura larvae. In addition, the immune-related genes in phenoloxidase (PO) pathway and fatty acid synthesis-related genes in lipid metabolism were upregulated in parasitized host larvae after validamycin A treatment. Importantly, the emergence rate, proportion of normal adults, and body size of parasitoid offspring was decreased in parasitized S. litura larvae after validamycin A treatment, indicating that validamycin A disrupts the trehalose metabolism of parasitized host and thus reduces the fitness of parasitoid offspring. The present study provides a novel perspective for coordinating the application of biocontrol and antibiotics in agroecosystem.
研究领域:
昆虫学
·
生物化学
·
分子生物学
·
寄生虫学
·
农业生态学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2022
·
IF 8.025
Jianmei Chen,Yurui Xu,Xinghai Ning
Although cellular therapy holds enormous promise in treating intractable diseases, its application potential has been significantly hampered due to the scarcity of reliable and consistent cell sources. Therefore, a high-efficiency strategy that improves cell production and storage is desperately needed. Herein, we develop a versatile 3D bioinspired scaffold (Cryosilk) for improving scalable cell manufacture and cryopreservation. A bottom-up fabrication technique integrating electrospinning, in situ surface functionalization and freeze-shaping was explored to construct Cryosilk with biomimetic features and functions of silkworm cocoons. Cryosilk is composed of a core-shell heterostructure with silk fibroin/poly alanine fiber core and silk sericin shell, generating a 3D cocoon-mimicking fibrous structure. Importantly, Cryosilk possesses improved thermal conductivity and ice crystal resistance capability, thus enabling to cryopreserve biological samples with minimal cryodamage. Furthermore, Cryosilk not only promotes cell adhesion and growth, but achieves rapid and uniform rewarming process, which provides high cryopreservation efficacy for immune cells and stem cells. Particularly, Cryosilk can maintain cell viability and biofunctions of stem cell-scaffold constructs after freeze-thawing, which can be directly implanted to promote wound healing. Thus, Cryosilk offers unprecedented efficacy in cell manufacture and cryopreservation, which provides sufficient and high-quality precious cells and tissue engineered scaffolds for cellular therapy.
研究领域:
生物材料
·
组织工程
·
细胞疗法
·
生物技术
·
低温生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY
·
2022
·
IF 4.966
Ming-yang Li,Chang-wei Gong,Yun-zheng Zhang,Xia Zhao,Yan Jia,Jian Pu,Xue-mei Liu,Xiang Xu,Xue-gui Wang
Chilo suppressalis Walker (Lepidoptera: Crambidae) is one of the most destructive pests occurring in the rice-growing regions of Asia. Parasitoids , mainly egg parasitoids , have been of interest for several years even with practical used cases. Therefore, the potential impact of insecticides on natural enemies needs great attention. In this study, chlorantraniliprole was evaluated for its impact on C. suppressalis and two dominant parasitic wasps . Bioassays showed that chlorantraniliprole had negligible toxicity to Eriborus terebrans but was significantly toxic to Chelonus munakatae ; the mortality exceeded 50% when the concentration reached 46.83 ng/cm 2 . Enzyme assays suggested that the significantly different carboxylesterase activity may be involved in the high-level detoxification metabolism of E. terebrans . According to the results of enzyme gene correlation analysis, P450s may be the dominant factor in the detoxification metabolism of C. munakatae . In addition, the ryanodine receptor C-terminus of C. suppressalis (CsRyR), C. munakatae (CmRyR) and E. terebrans (EtRyR) were successfully cloned. Different amino acids at resistance mutation I4758 M between susceptible C. suppressalis (I) and parasitic wasps (M) may be related to susceptibility differences. Simulated docking showed that CsRyR and CmRyR can interact with chlorantraniliprole but not EtRyR. More interaction forces were formed between CsRyR and chlorantraniliprole than CmRyR. Furthermore, a Pi-Pi T-shape formed between 73PHE in CsRyR and the benzene ring in chlorantraniliprole. These results indicated that both detoxification metabolism and the target site could mediate the susceptibility difference between C. suppressalis and its parasitic wasps.
研究领域:
昆虫学
·
毒理学
·
生物化学
·
分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2019
·Vol. 9
·期 25
·14254-14259
·
IF 3.049
Qiaoyun Qi,Yanru Li,Wu Qiu,Wenhai Zhang,Chenyang Shi,Chen Hou,Wen Yan,Jiani Huang,Likun Yang,Hao Wang,Wenxi Guo,Xiang Yang Liu,Naibo Lin
Transient devices have attracted extensive interest because they allow changes in physical form and device function under the control of external stimuli or related commands and have very broad application prospects for information security, biomedical care and the environment. Transient bioelectrical devices were fabricated inspired by a silkworm moth breaking out of its cocoon, which has shown many advantages, including the use of mild stimulation, biocompatible materials, a simple process, and a universal strategy. For the fabrication of the transient devices, heat-sensitive microspheres with a 9.3 mol L−1 LiBr solution in wax shells were prepared by microfluidic technology, which were then assembled into silk fibroin (SF) electronic materials/devices, such as SF conductive film, an LED circuit on SF film, and a Ag/SF film/Pt/SF film memristor. The contribution from the LiBr/wax microspheres to the transient time of the SF films upon exposure to heat was quantitatively investigated. This approach was applied to transiently dissolve a flexible Ag-nanowire resistance circuit line on a SF substrate. Moreover, memristors constructed with a functional layer of SF were destroyed by melting the LiBr/wax microspheres. This technique paves the way for realizing transient bioelectrical devices inspired by biological behavior, which have been well optimized by nature via evolution.
研究领域:
材料科学
·
生物医学工程
·
纳米技术
·
生物电子学
·
微流控技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED MATERIALS
·
2025
·Vol. 37
·期 40
·e03926
·
IF 26.8
Jianyu Pu,Yuantao Zhang,Huiming Ning,Yuanhao Tian,Chenxing Xiang,Hui Zhao,Yafeng Liu,Alamusi Lee,Xinglong Gong,Ning Hu,Tonghua Zhang,Shu Wang
Iontronic pressure sensors are widely used in human motion monitoring and human–machine interactions owing to their high sensitivity, wide measurement range, and excellent resolution. However, conventional dielectric layer designs often involve complex fabrication processes, high costs, and limited performances. This paper proposes a novel sensor structure, the dual-dielectric-layer iontronic pressure sensor (DLIPS), which integrates high- and low-permittivity layers. Validated using silkworm cocoon ion gel and open-cell polyurethane foam as dielectrics, the DLIPS exhibited ultrahigh sensitivity (72548.7 kPa −1 ), a wide working pressure range (0.001–420 kPa), an exceptionally low detection limit (0.832 Pa), and remarkable durability exceeding 5000 cycles. By leveraging the distinct responses of the capacitance and resistance to pressure and temperature, the sensor can simultaneously measure both parameters. A deep learning regression model is integrated to decouple the mixed temperature and pressure signals, enabling accurate identification. Owing to its ultrahigh sensitivity and capability to detect minute pressure fluctuations, the DLIPS exhibited strong potential for skin-mounted silent speech recognition systems, achieving a recognition accuracy of up to 98.5%. Furthermore, the DLIPS provides a cost-effective and scalable approach for fabricating ultrahigh-sensitivity pressure sensors, underscoring its versatility in wearable technology applications.
研究领域:
可穿戴电子学
·
传感器与传感技术
·
人机交互
·
柔性电子学
·
信号处理中的人工智能
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）