资源类型

期刊论文 34

年份

2023 3

2022 8

2021 4

2020 1

2019 2

2018 2

2017 3

2016 3

2015 2

2011 1

2010 1

2007 1

展开 ︾

关键词

D1 turnover / photoinhibition / photoprotection / photosynthesis / tomato / xanthophyll cycle 1

SARS-CoV-2干扰 1

佩戴口罩 1

免疫细胞 1

免疫耐受 1

全程氨氧化细菌 1

关节内注射 1

反应器运行 1

发病机制 1

器官移植 1

固有免疫细胞 1

巨噬细胞 1

微污染物降解 1

排斥反应 1

机器翻译;语义角色;句法树;串到树模型 1

污水处理 1

流体;小岩体;成矿作用 1

流行性感冒 1

环境因素 1

展开 ︾

检索范围:

排序: 展示方式:

Investigation of the roles of lignin in biomass-based hydrogel for efficient desalination

《化学科学与工程前沿(英文)》 2023年 第17卷 第7期   页码 954-965 doi: 10.1007/s11705-023-2311-2

摘要: The shortage of freshwater has become a global challenge, and solar-driven interfacial evaporation for desalination is a promising way to alleviate the crisis. To develop highly efficient and environmentally friendly photothermal evaporator, the hydroxyethyl cellulose (HEC)/alkaline lignin (AL)/graphene oxide (GO) hydrogels (CLGs) with remarkable evaporative performance were successfully fabricated by a facile sol–gel method using biomass residues. The influence of AL content on the physicochemical properties of the evaporator was investigated. The increasing content of AL improves the mechanical properties, saturated water content and crosslink density of the hydrogels. The designed materials exhibit outstanding thermal insulation capacity (the thermal conductivity of less than 0.05 W·m–1·K–1) and high light absorption capacity of more than 97%. The solar evaporation efficiency and water evaporation rate of the HEC/64 wt % of AL/GO hydrogels (CLG4) achieve 92.1% and 2.55 kg·m–2·h–1 under 1 sun, respectively. The salt resistance test results reveal that the evaporation rate of the CLG4 can still reach 2.44 kg·m–2·h–1 in 3.5 wt % NaCl solution. The solar evaporation rate of the CLG4 can maintain in the range of 2.45–2.59 kg·m–2·h–1 in five cycles. This low-cost lignin-based photothermal evaporator offers a sustainable strategy for desalination.

关键词: lignin     photothermal     cellulose     desalination     hydrogel    

Emerging roles of liquid metals in carbon neutrality

《能源前沿(英文)》 2022年 第16卷 第3期   页码 393-396 doi: 10.1007/s11708-022-0829-5

Protective roles of heat stress on the neurons in hippocampal CA1 region of mice

WANG Chunxu, WANG Hanxing

《医学前沿(英文)》 2007年 第1卷 第4期   页码 418-422 doi: 10.1007/s11684-007-0082-7

摘要: The effects of heat stress on the neurons in hippocampal CA1 region of brain ischemia/reperfusion were explored. The mice were pretreated with heat stress followed by ischemia/reperfusion by clipping bilateral cervical commo n arteries for 7 min. Mice were divided randomly into four groups as follows: (1) normal control group; (2) heat stress pretreated subsequent to ischemia/reperfusion group (HS/IR); (3) ischemia/reperfusion group (IR); and (4) heat stress group (HS). Animals in the last three groups were subdivided into three subgroups: 1 d, 4 d, 14 d respectively. The Morris water maze was used to test the ability of learning and memorizing, Nissl staining was used to count the average number of survived neurons in hippocampal CA1 region, and immunohistochemistry combined with image analysis system to detect the changes of Microtubule associated protein 2 (MAP-2) expression. The results showed that mice in IR group exhibited increased escape latency when compared with that of normal, HS and HS/IR groups (<0.01), and the mice in IR group adopted an inefficient search strategy, major in circling and restricted searching manners. Nissl staining results showed a significant reduction in the number of pyramidal neurons in hippocampal CA1 regions in HS/IR and IR groups, with a decrease in IR group (<0.01). Compared with normal group, the expression of MAP-2 in hippocampal CA1 region obviously decreased in IR group (<0.05). The present results indicate that heat stress pretreatment can improve the spatial learning and memorizing function through protection to hippocampal neurons.

MicroRNAs and their roles in osteoclast differentiation

Zhuying Xia, Chao Chen, Peng Chen, Hui Xie, Xianghang Luo

《医学前沿(英文)》 2011年 第5卷 第4期   页码 414-419 doi: 10.1007/s11684-011-0168-0

摘要: Osteoclasts, which are derived from monocyte-macrophage precursors, are exclusive bone resorption cells. Limited evidence indicates that a class of small non-coding single-stranded RNAs known as “microRNAs” (miRNAs) is also involved in bone resorption. Although various miRNAs regulate cell proliferation and differentiation, few miRNAs have been reported to play a key role in the regulation of osteoclast differentiation. In this short review, the biology and functional mechanisms of miRNAs in osteoclastogenesis are summarized. The profiling, function, and target prediction of miRNAs are discussed as well.

关键词: miRNA     osteoclast differentiation     antagomirs    

Emerging roles of podoplanin in vascular development and homeostasis

null

《医学前沿(英文)》 2015年 第9卷 第4期   页码 421-430 doi: 10.1007/s11684-015-0424-9

摘要:

Podoplanin (PDPN) is a mucin-type O-glycoprotein expressed in diverse cell types, such as lymphatic endothelial cells (LECs) in the vascular system and fibroblastic reticular cells (FRCs) in lymph nodes. PDPN on LECs or FRCs activates CLEC-2 in platelets, triggering platelet activation and/or aggregation through downstream signaling events, including activation of Syk kinase. This mechanism is required to initiate and maintain separation of blood and lymphatic vessels and to stabilize high endothelial venule integrity within lymph nodes. In the vascular system, normal expression of PDPN at the LEC surface requires transcriptional activation of Pdpn by Prox1 and modification of PDPN with core 1-derived O-glycans. This review provides a comprehensive overview of the roles of PDPN in vascular development and lymphoid organ maintenance and discusses the mechanisms that regulate PDPN expression related to its function.

关键词: podoplanin     CLEC-2     Prox1     O-glycosylation     lymphatic vascular development and maintenance     lymphoid organ homeostasis    

Digitalization for supply chain resilience and robustness: The roles of collaboration and formal contracts

《工程管理前沿(英文)》   页码 5-19 doi: 10.1007/s42524-022-0229-x

摘要: Black swan events such as the coronavirus (COVID-19) outbreak cause substantial supply chain disruption risks to modern companies. In today’s turbulent and complex business environment, supply chain resilience and robustness as two critical capabilities for firms to cope with disruptions have won substantial attention from both the academia and industry. Accordingly, this study intends to explore how digitalization helps build supply chain resilience and robustness. Adopting organizational information processing theory, it proposes the mediating effect of supply chain collaboration and the moderating effect of formal contracts. Using survey data of Chinese manufacturing firms, the study applied structural equation modelling to test the research model. Results show that digitalization has a direct effect on supply chain resilience, and supply chain collaboration can directly facilitate both resilience and robustness. Our study also indicates a complementary mediating effect of supply chain collaboration on the relationship between digitalization and supply chain resilience and an indirect-only mediation effect on the relationship between digitalization and supply chain robustness. Findings reveal the differential roles of digitalization as a technical factor and supply chain collaboration as an organizational factor in managing supply chain disruptions. Paradoxically, formal contracts enhance the relationship between digitalization and supply chain resilience but weaken the relationship between supply chain collaboration and supply chain resilience. The validation of moderating effects determines the boundary conditions of digitalization and supply chain collaboration and provides insights into governing supply chain partners’ behavior. Overall, this study enhances the understanding on how to build a resilient and robust supply chain.

关键词: digitalization     supply chain     resilience     robustness     collaboration     formal contract    

The greater roles of indigenous microorganisms in removing nitrobenzene from sediment compared with the

Xiangqun Chi, Yingying Zhang, Daosheng Wang, Feihua Wang, Wei Liang

《环境科学与工程前沿(英文)》 2018年 第12卷 第1期 doi: 10.1007/s11783-018-1016-0

摘要: The feasibility of using -JS45 system in removing nitrobenzene from sediments was conducted. However, it was observed that nitrobenzene degraded rapidly and was removed completely within 20 days in native sediments, raising the possibility that indigenous microorganisms may play important roles in nitrobenzene degradation. Consequently, this study aimed to verify this possibility and investigate the potential nitrobenzene degraders among indigenous microorganisms in sediments. The abundance of inoculated strain JS45 and indigenous bacteria in sediments was quantified using real-time polymerase chain reaction. Furthermore, community structure of the indigenous bacteria was analyzed through high throughput sequencing based on Illumina MiSeq platform. The results showed that indigenous bacteria in native sediments were abundant, approximately 10 CFU/g dry weight, which is about six orders of magnitude higher than that in fertile soils. In addition, the levels of indigenous ( , , , and ) and ( , , , , and ) increased significantly during nitrobenzene removal. Their quantities sharply decreased after nitrobenzene was removed completely, except for and . Based on the results, it can be concluded that indigenous microorganisms including and can have great potential for removing nitrobenzene from sediments. Although . - JS45 system was set up in an attempt to eliminate nitrobenzene from sediments, and the system did not meet the expectation. The findings still provide valuable information on enhancing nitrobenzene removal by optimizing the sediment conditions for better growth of indigenous and .

关键词: Community structure     Indigenous microorganisms     Nitrobenzene     Plant-microbe associated remediation     Sediment    

Cadmium removal mechanistic comparison of three Fe-based nanomaterials: Water-chemistry and roles of

《环境科学与工程前沿(英文)》 2022年 第16卷 第12期 doi: 10.1007/s11783-022-1586-8

摘要:

● nZVI, S-nZVI, and nFeS were systematically compared for Cd(II) removal.

关键词: Nano zero valent iron     Sulfided zero valent iron     FeS     Cd(II) immobilization     Fe dissolution    

Balancing resilience and efficiency in supply chains: Roles of disruptive technologies under Industry

《工程管理前沿(英文)》   页码 171-176 doi: 10.1007/s42524-022-0247-8

摘要: In the Industry 4.0 era, disruptive technologies such as big data analytics, blockchain, Internet-of-Things, and additive manufacturing have become major forces driving supply chain transformation. Under such circumstances, particular attention should be attached to balancing resilience and efficiency of the supply chain, especially in the presence of more turbulence. In this study, we first summarize the conflicts between supply chain efficiency and supply chain resilience regarding practices and objectives. Then, we discuss the positive effects of disruptive technologies in improving resilience and efficiency. Afterwards, we propose a research agenda that covers both the influence mechanism and trade-off mechanism of these technologies in terms of resilience and efficiency.

关键词: disruptive technologies     supply chain     resilience     efficiency     paradox     balance    

PROTECTIVE ROLES OF D1 PROTEIN TURNOVER AND THE XANTHOPHYLL CYCLE IN TOMATO (

Tao LU, Jiazhi LU, Mingfang QI, Zhouping SUN, Yufeng LIU, Tianlai LI

《农业科学与工程前沿(英文)》   页码 262-279 doi: 10.15302/J-FASE-2021383

摘要: D1 protein turnover and the xanthophyll cycle (XC) are important photoprotective mechanisms in plants that operate under adverse conditions. Here, streptomycin sulfate (SM) and dithiothreitol (DTT) were used in tomato plants as inhibitors of D1 protein turnover and XC to elucidate their photoprotective impacts under sub-high temperature and high light conditions (HH, 35°C, 1000 µmol·m ·s ). SM and DTT treatments significantly reduced the net photosynthetic rate, apparent quantum efficiency, maximum photochemical efficiency, and potential activity of photosystem II, leading to photoinhibition and a decline in plant biomass under HH. The increase in reactive oxygen species levels resulted in thylakoid membrane lipid peroxidation. In addition, there were increased non-photochemical quenching and decreased chlorophyll pigments in SM and DTT application, causing an inhibition of D1 protein production at both transcriptional and translational levels. Overall, inhibition of D1 turnover caused greater photoinhibition than XC inhibition. Additionally, the recovery levels of most photosynthesis indicators in DTT-treated plants were higher than in SM-treated plants. These findings support the view that D1 turnover has a more important role than XC in photoprotection in tomato under HH conditions.

关键词: D1 turnover     photoinhibition     photoprotection     photosynthesis     tomato     xanthophyll cycle    

核能在制氢领域发挥重要作用 Views & Comments

Shinji Kubo

《工程(英文)》 2022年 第16卷 第9期   页码 16-20 doi: 10.1016/j.eng.2021.12.024

Critical roles of chemokines and cytokines in antiviral innate immune responses during rabies virus infection

Ying HUANG, Clement Wesley GNANADURAI, Zhenfang FU

《农业科学与工程前沿(英文)》 2017年 第4卷 第3期   页码 260-267 doi: 10.15302/J-FASE-2016116

摘要: The innate immune response is the first line of defense against viral invasion and pro-inflammatory chemokines and cytokines have a critical function in the innate immune responses against virus infections. The ability of a rabies virus (RABV) to induce the expression of chemokines and cytokines can lead to viral clearance from the central nervous system (CNS), whereas the ability to evade such expression and activation contributes to virulence and pathogenicity. In this review, the crucial contribution of chemokines/cytokines to clearing RABV from the CNS is discussed, including recruiting leukocytes into the CNS, enhancement of blood brain barrier permeability and activation of various immune cells that are essential for viral clearance. In addition, recombinant RABV expressing cytokines and chemokines can induce elevated innate and adaptive immune responses which result in clearing an established wild-type RABV infection in the CNS.

关键词: antiviral     blood brain barrier     chemokines and cytokines     innate immunity     rabies virus    

Astrocytes in depression and Alzheimer’s disease

《医学前沿(英文)》 2021年 第15卷 第6期   页码 829-841 doi: 10.1007/s11684-021-0875-0

摘要: Astrocytes are an abundant subgroup of cells in the central nervous system (CNS) that play a critical role in controlling neuronal circuits involved in emotion, learning, and memory. In clinical cases, multiple chronic brain diseases may cause psychosocial and cognitive impairment, such as depression and Alzheimer’s disease (AD). For years, complex pathological conditions driven by depression and AD have been widely perceived to contribute to a high risk of disability, resulting in gradual loss of self-care ability, lower life qualities, and vast burden on human society. Interestingly, correlational research on depression and AD has shown that depression might be a prodrome of progressive degenerative neurological disease. As a kind of multifunctional glial cell in the CNS, astrocytes maintain physiological function via supporting neuronal cells, modulating pathologic niche, and regulating energy metabolism. Mounting evidence has shown that astrocytic dysfunction is involved in the progression of depression and AD. We herein review the current findings on the roles and mechanisms of astrocytes in the development of depression and AD, with an implication of potential therapeutic avenue for these diseases by targeting astrocytes.

关键词: astrocytes     depression     Alzheimer’s disease     roles     mechanisms    

Breast cancer-associated fibroblasts: their roles in tumor initiation, progression and clinical applications

null

《医学前沿(英文)》 2016年 第10卷 第1期   页码 33-40 doi: 10.1007/s11684-016-0431-5

摘要:

Breast cancer is the most common malignant tumor in women, and the incidence of this disease has increased in recent years because of changes in diet, living environment, gestational age, and other unknown factors. Previous studies focused on cancer cells, but an increasing number of recent studies have analyzed the contribution of cancer microenvironment to the initiation and progression of breast cancer. Cancer-associated fibroblasts (CAFs), the most abundant cells in tumor stroma, secrete various active biomolecules, including extracellular matrix components, growth factors, cytokines, proteases, and hormones. CAFs not only facilitate the initiation, growth, angiogenesis, invasion, and metastasis of cancer but also serve as biomarkers in the clinical diagnosis, therapy, and prognosis of breast cancer. In this article, we reviewed the literature and summarized the research findings on CAFs in breast cancer.

关键词: cancer-associated fibroblast     breast cancer     progression     prognosis    

PROTECTIVE ROLES OF D1 PROTEIN TURNOVER AND THE XANTHOPHYLL CYCLE IN TOMATO (SOLANUM LYCOPERSICUM) UNDER

《农业科学与工程前沿(英文)》 2021年 第8卷 第2期

摘要:

D1 protein turnover and the xanthophyll cycle (XC) are important photoprotective mechanisms in plants that operate under adverse conditions. Here, streptomycin sulfate (SM) and dithiothreitol (DTT) were used in tomato plants as inhibitors of D1 protein turnover and XC to elucidate their photoprotective impacts under sub-high temperature and high light conditions (HH, 35°C, 1000 µmol·m-2·s-1). SM and DTT treatments significantly reduced the net photosynthetic rate, apparent quantum efficiency, maximum photochemical efficiency, and potential activity of photosystem II, leading to photoinhibition and a decline in plant biomass under HH. The increase in reactive oxygen species levels resulted in thylakoid membrane lipid peroxidation. In addition, there were increased non-photochemical quenching and decreased chlorophyll pigments in SM and DTT application, causing an inhibition of D1 protein production at both transcriptional and translational levels. Overall, inhibition of D1 turnover caused greater photoinhibition than XC inhibition. Additionally, the recovery levels of most photosynthesis indicators in DTT-treated plants were higher than in SM-treated plants. These findings support the view that D1 turnover has a more important role than XC in photoprotection in tomato under HH conditions.

 

关键词: D1 turnover / photoinhibition / photoprotection / photosynthesis / tomato / xanthophyll cycle    

标题 作者 时间 类型 操作

Investigation of the roles of lignin in biomass-based hydrogel for efficient desalination

期刊论文

Emerging roles of liquid metals in carbon neutrality

期刊论文

Protective roles of heat stress on the neurons in hippocampal CA1 region of mice

WANG Chunxu, WANG Hanxing

期刊论文

MicroRNAs and their roles in osteoclast differentiation

Zhuying Xia, Chao Chen, Peng Chen, Hui Xie, Xianghang Luo

期刊论文

Emerging roles of podoplanin in vascular development and homeostasis

null

期刊论文

Digitalization for supply chain resilience and robustness: The roles of collaboration and formal contracts

期刊论文

The greater roles of indigenous microorganisms in removing nitrobenzene from sediment compared with the

Xiangqun Chi, Yingying Zhang, Daosheng Wang, Feihua Wang, Wei Liang

期刊论文

Cadmium removal mechanistic comparison of three Fe-based nanomaterials: Water-chemistry and roles of

期刊论文

Balancing resilience and efficiency in supply chains: Roles of disruptive technologies under Industry

期刊论文

PROTECTIVE ROLES OF D1 PROTEIN TURNOVER AND THE XANTHOPHYLL CYCLE IN TOMATO (

Tao LU, Jiazhi LU, Mingfang QI, Zhouping SUN, Yufeng LIU, Tianlai LI

期刊论文

核能在制氢领域发挥重要作用

Shinji Kubo

期刊论文

Critical roles of chemokines and cytokines in antiviral innate immune responses during rabies virus infection

Ying HUANG, Clement Wesley GNANADURAI, Zhenfang FU

期刊论文

Astrocytes in depression and Alzheimer’s disease

期刊论文

Breast cancer-associated fibroblasts: their roles in tumor initiation, progression and clinical applications

null

期刊论文

PROTECTIVE ROLES OF D1 PROTEIN TURNOVER AND THE XANTHOPHYLL CYCLE IN TOMATO (SOLANUM LYCOPERSICUM) UNDER

期刊论文