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An Experimental Study on the Effect of a Nanofluid on Oil-Water Relative Permeability
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作者 Hui Tian dandan zhao +3 位作者 Yannan Wu Xingyu Yi Jun Ma Xiang Zhou 《Fluid Dynamics & Materials Processing》 EI 2024年第6期1265-1277,共13页
The low porosity and low permeability of tight oil reservoirs call for improvements in the current technologies for oil recovery.Traditional chemical solutions with large molecular size cannot effectively flow through... The low porosity and low permeability of tight oil reservoirs call for improvements in the current technologies for oil recovery.Traditional chemical solutions with large molecular size cannot effectively flow through the nanopores of the reservoir.In this study,the feasibility of Nanofluids has been investigated using a high pressure high temperature core-holder and nuclear magnetic resonance(NMR).The results of the experiments indicate that the specified Nanofluids can enhance the tight oil recovery significantly.The water and oil relative permeability curve shifts to the high water saturation side after Nanofluid flooding,thereby demonstrating an increase in the water wettability of the core.In the Nanofluid flooding process the oil recovery was enhanced by 15.1%,compared to waterflooding stage.The T2 spectra using the NMR show that after Nanofluid flooding,a 7.18%increment in oil recovery factor was gained in the small pores,a 4.9%increase in the middle pores,and a 0.29%increase in the large pores.These results confirm that the Nanofluids can improve the flow state in micro-sized pores inside the core and increase the ultimate oil recovery factor. 展开更多
关键词 Tight oil reservoir NANOFLUID relative permeability nuclear magnetic resonance T2 spectrum
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Etiological Analysis of 248 Cases of Oculomotor Nerve Palsy
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作者 Bo Xia dandan zhao 《Journal of Clinical and Nursing Research》 2024年第7期287-290,共4页
Objective:To explore the main causes of oculomotor nerve palsy,providing a reference for clinical diagnosis and treatment.Methods:A total of 248 patients with oculomotor nerve palsy treated in the hospital from Januar... Objective:To explore the main causes of oculomotor nerve palsy,providing a reference for clinical diagnosis and treatment.Methods:A total of 248 patients with oculomotor nerve palsy treated in the hospital from January 2016 to January 2018 were selected,and their causes and treatments were summarized.Results:This study found that the main causes of oculomotor nerve palsy were intracranial aneurysms,brain stem lesions,and brain inflammation.A few cases were due to viral infections and congenital oculomotor nerve palsy,while some patients had unknown causes.After treatment in our hospital,most patients experienced relief,although 12 patients died.Conclusion:The etiology of oculomotor nerve palsy is complex,and choosing appropriate drugs during treatment is challenging.Timely identification of the cause is an effective method for treatment. 展开更多
关键词 Oculomotor nerve palsy ETIOLOGY ANALYSIS
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One‑Step Gas-Solid‑Phase Diffusion‑Induced Elemental Reaction for Bandgap‑Tunable Cu_(a)Agm_(1)Bim_(2)I_(n)/CuI Thin Film Solar Cells
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作者 Erchuang Fan Manying Liu +9 位作者 Kangni Yang Siyu Jiang Bingxin Li dandan zhao Yanru Guo Yange Zhang Peng Zhang Chuantian Zuo Liming Ding Zhi Zheng 《Nano-Micro Letters》 SCIE EI CAS CSCD 2023年第4期261-271,共11页
Lead-free inorganic copper-silver-bismuth-halide materials have attracted more and more attention due to their environmental friendliness,high element abundance,and low cost.Here,we developed a strategy of one-step ga... Lead-free inorganic copper-silver-bismuth-halide materials have attracted more and more attention due to their environmental friendliness,high element abundance,and low cost.Here,we developed a strategy of one-step gas-solid-phase diffusioninduced reaction to fabricate a series of bandgap-tunable Cu_(a)Agm_(1)Bim_(2)I_(n)/CuI bilayer films due to the atomic diffusion effect for the first time.By designing and regulating the sputtered Cu/Ag/Bi metal film thickness,the bandgap of Cu_(a)Agm_(1)Bim_(2)I_(n)/CuI could be reduced from 2.06 to 1.78 eV.Solar cells with the structure of FTO/TiO_(2)/Cu_(a)Agm_(1)Bim_(2)I_(n)/CuI/carbon were constructed,yielding a champion power conversion efficiency of 2.76%,which is the highest reported for this class of materials owing to the bandgap reduction and the peculiar bilayer structure.The current work provides a practical path for developing the next generation of efficient,stable,and environmentally friendly photovoltaic materials. 展开更多
关键词 Cu_(a)Agm_(1)Bim_(2)I_(n)/CuI Elemental reaction Bandgap tuning Solar cells Gas-solid phase
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High-Performance Li-ion Batteries and Super-capacitors Based on Prospective 1-D Nanomaterials 被引量:9
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作者 dandan zhao Ying Wang Yafei Zhang 《Nano-Micro Letters》 SCIE EI CAS 2011年第1期62-71,共10页
One-dimensional(1-D) nanomaterials with superior specific capacity, higher rate capability, better cycling peroperties have demonstrated significant advantages for high-performance Li-ion batteries and supercapacito... One-dimensional(1-D) nanomaterials with superior specific capacity, higher rate capability, better cycling peroperties have demonstrated significant advantages for high-performance Li-ion batteries and supercapacitors. This review describes some recent developments on the rechargeable electrodes by using 1-D nanomaterials(such as Li Mn2O4 nanowires, carbon nanofibers, Ni Mo O4 · n H2O nanorods, V2O5 nanoribbons,carbon nanotubes, etc.). New preparation methods and superior electrochemical properties of the 1-D nanomaterials including carbon nanotube(CNT), some oxides, transition metal compounds and polymers, and their composites are emphatically introduced. The VGCF/Li Fe PO4/C triaxial nanowire cathodes for Li-ion battery present a positive cycling performance without any degradation in almost theoretical capacity(160 m Ah/g).The Si nanowire anodes for Li-ion battery show the highest known theoretical charge capacity(4277 m Ah/g),that is about 11 times lager than that of the commercial graphite(372 m Ah/g). The SWCNT/Ni foam electrodes for supercapacitor display small equivalent series resistance(ESR, 52 m?) and impressive high power density(20 k W/kg). The advantages and challenges associated with the application of these materials for energy conversion and storage devices are highlighted. 展开更多
关键词 One-dimensional nanomaterials Li-ion battery SUPERCAPACITOR Electrochemical property
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Environmental Sustainability of Water Footprint in China' Mainland 被引量:3
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作者 Junguo Liu dandan zhao +3 位作者 Ganquan Mao Wenhui Cui He Chena Hong Yang 《Geography and Sustainability》 2020年第1期8-17,共10页
Water footprint(WF)measures human appropriation of water resources for consumptive use of surface and ground water(blue WF)and soil water(green WF)and for assimilating polluted water(grey WF).Questions have been often... Water footprint(WF)measures human appropriation of water resources for consumptive use of surface and ground water(blue WF)and soil water(green WF)and for assimilating polluted water(grey WF).Questions have been often asked about the exact meaning behind the numbers from WF accounting.However,to date environmental sustainability of WF has never been assessed at the sub-national level over time.This study evaluated the environmental sustainability of blue,green and grey WF for China’s 31 mainland provinces in 2002,2007 and 2012,and identified the unsustainable hotspots.Overall,the total WF increased by 30%between 2002 and 2012.The growth can be attributed to the increase of grey WF because the green and blue WF showed only a slight rise.Among all provinces investigated in 2012,eleven showed unsustainable blue WF(sustainability index SI<0),which were mainly located in the North China Plain.There were 12 provinces that displayed unsustainable green WF,and they were distributed in China’s southern and southeastern areas.The grey WF was not sustainable in approximately two third of provinces(19),which were mainly located in China’s middle and northern regions and Guangdong province.More than half of China’s provinces showed trends of improved SI of green and blue WF from 2002 to 2012.However,the SI of grey WF decreased in almost two third of provinces.Poor levels of WF sustainability were due to water scarcity and pollution,which intensify the degradation of local rivers and ecosystems and make restoration more difficult.The results shed light on the policy making needed to improve sustainable water management,and ecological restoration of hotspot regions. 展开更多
关键词 Green water Blue water Grey water Sustainable development Ecological restoration
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A Security Enhancement Model Based on Switching Edge Strategy in Interdependent Heterogeneous Cyber-Physical Systems 被引量:1
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作者 dandan zhao Can Liu +4 位作者 Guangquan Xu Zhiguo Ding Hao Peng Juan Yu Jianmin Han 《China Communications》 SCIE CSCD 2022年第2期158-173,共16页
With the advent of cross-domain interconnection,large-scale sensor network systems such as smart grids,smart homes,and intelligent transportation have emerged.These complex network systems often have a CPS(Cyber-Physi... With the advent of cross-domain interconnection,large-scale sensor network systems such as smart grids,smart homes,and intelligent transportation have emerged.These complex network systems often have a CPS(Cyber-Physical System)architecture and are usually composed of multiple interdependent systems.Minimal faults between interdependent networks may cause serious cascading failures between the entire system.Therefore,in this paper,we will explore the robustness detection schemes for interdependent networks.Firstly,by calculating the largest giant connected component in the entire system,the security of interdependent network systems under different attack models is analyzed.Secondly,a comparative analysis of the cascade failure mechanism between interdependent networks under the edge enhancement strategy is carried out.Finally,the simulation results verify the impact of system reliability under different handover edge strategies and show how to choose a better handover strategy to enhance its robustness.The further research work in this paper can also help design how to reduce the interdependence between systems,thereby further optimizing the interdependent network system’s structure to provide practical support for reducing the cascading failures.In the later work,we hope to explore our proposed strategies in the network model of real-world or close to real networks. 展开更多
关键词 security enhancement switching edge strategy interdependent systems cyber-physical systems
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Ruddlesden–Popper Perovskite for Stable Solar Cells 被引量:1
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作者 Chao Liang dandan zhao +4 位作者 Yan Li Xiaojun Li Shaomin Peng Guosheng Shao Guichuan Xing 《Energy & Environmental Materials》 SCIE EI CAS 2018年第4期221-231,共11页
Three-dimensional metal-halide perovskites have emerged as promising light harvesting materials for converting sunlight to electricity in the last few years.High power conversion efficiency of 23.3%has been demonstrat... Three-dimensional metal-halide perovskites have emerged as promising light harvesting materials for converting sunlight to electricity in the last few years.High power conversion efficiency of 23.3%has been demonstrated.However,the main challenge that currently limits the application of the perovskite solar cells is the long-term stability,which has ambient,thermal,and photo stability weaknesses. 展开更多
关键词 low dimension perovskite solar cells RUDDLESDEN-POPPER stability
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A Study on the Ultrasonic Extraction and Antioxidant Activity of Lychee Pericarp Polysaccharides 被引量:1
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作者 dandan zhao Shengyu CHEN +3 位作者 Shaoming LING Bingfang SHI Jinlei ZHANG Li LI 《Asian Agricultural Research》 2016年第7期61-63,68,共4页
The aim was to optimize ultrasonic extraction conditions and study antioxidant activities of lychee pericarp polysaccharides. The effects of extraction temperature,time,ultrasonic power,solid-liquid ratio on polysacch... The aim was to optimize ultrasonic extraction conditions and study antioxidant activities of lychee pericarp polysaccharides. The effects of extraction temperature,time,ultrasonic power,solid-liquid ratio on polysaccharides yield were investigated by single-factor experiment and orthogonal experiment to obtain optimum extraction conditions; the antioxidant activities of lychee pericarp polysaccharides were evaluated by the total antioxidant activity. Optimum extraction process was under extraction temperature of 80 ℃,extraction time of 2. 5 h,ultrasonic power of 180 W,solid-liquid ratio of 1∶ 25 g / m L; the total antioxidant activity was increased with the increasing concentration of polysaccharides. The extraction process is simple and efficient. The extraction rate of lychee pericarp polysaccharides with antioxidant activities is high. 展开更多
关键词 Lychee PERICARP POLYSACCHARIDES ULTRASONIC extraction ANTIOXIDANT ACTIVITY
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A Study on the Aseptic Germination Method for <i>Rosa rugose</i>Seeds 被引量:1
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作者 Changli Fu Shutang Xing +4 位作者 dandan zhao Dekui Zang Yuyuan Wei Lanyong zhao Xiaoyan Yu 《Agricultural Sciences》 2017年第5期426-434,共9页
In order to find a method to break dormancy of Rosa rugose seeds and interspecific hybrid seeds between Rosa rugose and Rosa hybrid quickly, and accelerate the breeding process of interspecific hybridization between R... In order to find a method to break dormancy of Rosa rugose seeds and interspecific hybrid seeds between Rosa rugose and Rosa hybrid quickly, and accelerate the breeding process of interspecific hybridization between Rosa rugose and Rosa hybrid, the influence of concentrated acid, seed maturity, GA3 (gibberellin) and low temperature (4°C) on seed germination of Rosa rugose from Muping was researched under aseptic condition. The results showed that aseptic germination can significantly shorten the germination time of Rosa rugose seeds and raise its germination ratio. Before inoculation, concentrated acid treatment greatly increased the germination rate and reduced the contamination rate of the seeds. The higher the degree of maturity of seeds is, the lower the germination rate would be, and the best time for seed to aseptic germination is 60 d after pollination. The addition of GA3 in 1/2MS medium could promote seeds germination better, and when the concentration of GA3 was 0.15 mg/L, the seed germination ratio was the highest;the germination time decreased and the seed germination ratio increased gradually as the treatment time at 4°C lasted longer. 展开更多
关键词 ROSA rugose ASEPTIC Germination GA3 TREATMENT Low Temperature TREATMENT
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Salvianolic acid B improves glucolipid metabolism by regulating adipogenic transcription factors in mice with diet-induced obesity 被引量:1
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作者 dandan zhao Jiacheng Zuo +9 位作者 Na Yu Xin Fang Fangfang Mo Rui Wu Tian Tian Rufeng Ma Yushan Gao Dongwei Zhang Guangjian Jiang Sihua Gao 《Journal of Traditional Chinese Medical Sciences》 2017年第3期280-289,共10页
Objective:To determine the effect of Salvianolic acid B (Sal B) on glucose and lipid metabolism in mice with high-fat diet (HFD)-induced obesity,and to investigate the underlying mechanisms by measuring the expression... Objective:To determine the effect of Salvianolic acid B (Sal B) on glucose and lipid metabolism in mice with high-fat diet (HFD)-induced obesity,and to investigate the underlying mechanisms by measuring the expression levels of key adipogenic transcription factors.Methods:Six-week-old C57BL/6J male mice were fed for 12 weeks with a HFD to induce obesity or a standard diet to serve as normal controls.A mean body weight increase of more than 20% after these 12 weeks was used as the criteria for obesity.HFD-fed obese mice then received a supplement of Sal B (100 mg/kg body weight/day),metformin (75 mg/kg body weight/day) or water (an equivalent volume;served as model controls) by oral gavage for an additional 8 weeks,and the normal controls received water (an equivalent volume) by oral gavage for the same period.Results:Sal B significantly reduced body weight gain (P <.05) without influencing food intake in HFD-fed obese mice relative to model controls.Sal B also reduced the body fat mass of the obese mice relative to model controls in a time-dependent manner (P <.05).Sal B significantly decreased the serum concentrations of low-density lipoprotein cholesterol,total cholesterol,triglyceride and free fatty acids by 25.5%,20.2%,20.6% and 13.4%,respectively,and increased the concentration of high-density lipoprotein cholesterol by 50.1% relative to model controls.In addition,Sal B significantly lowered fasting glucose concentrations and improved insulin sensitivity relative to model controls (P <.05).Sal B acted by ameliorating the histopathological changes in both brown and white adipose tissues of obese mice.Moreover,in brown adipose tissue,Sal B up-regulated the mRNA and protein expression of PPARγ and c/EBPα,and the protein expression of PPARα and SREBP-1 (P <.05).In white adipose tissue,Sal B down-regulated the mRNA expression of PPARγ and c/EBPα,and decreased the protein expression of PPARγ and SREBP-1(P <.05).Conclusjons:The results suggest that Sal B can reduce body weight gain and regulate glucose and lipid metabolism in mice with diet-induced obesity by regulating adipogenic transcription factors in their adipose tissues. 展开更多
关键词 Salvianolic acid B OBESITY Blood GLUCOSE ADIPOSE tissue Adipogenic TRANSCRIPTION factors
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Reliability Analysis of Heterogeneous Sensor-Cloud Systems against Targeted Attacks
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作者 Hao Peng Zhen Qian +3 位作者 Guangquan Xu Kejie Mao Kangtian Li dandan zhao 《China Communications》 SCIE CSCD 2022年第8期181-197,共17页
Based on the wide application of cloud computing and wireless sensor networks in various fields,the Sensor-Cloud System(SCS)plays an indispensable role between the physical world and the network world.However,due to t... Based on the wide application of cloud computing and wireless sensor networks in various fields,the Sensor-Cloud System(SCS)plays an indispensable role between the physical world and the network world.However,due to the close connection and interdependence between the physical resource network and computing resource network,there are security problems such as cascading failures between systems in the SCS.In this paper,we propose a model with two interdependent networks to represent a sensor-cloud system.Besides,based on the percolation theory,we have carried out a formulaic theoretical analysis of the whole process of cascading failure.When the system’s subnetwork presents a steady state where there is no further collapse,we can obtain the largest remaining connected subgroup components and the penetration threshold.Theoretically,this result is the critical maximum that the coupled SCS can withstand.To verify the correctness of the theoretical results,we further carried out actual simulation experiments.The results show that a scale-free network priority attack’s percolation threshold is always less than that of ER network which is priority attacked.Similarly,when the scale-free network is attacked first,adding the power law exponentλcan be more intuitive and more effective to improve the network’s reliability. 展开更多
关键词 sensor-cloud systems targeted attacks heterogeneous networks reliability analysis system security
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Loganin regulates glycolipid metabolism by influencing intestinal microbiota and AMPK signaling in obese mice
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作者 Bingrui Xu Zimengwei Ye +7 位作者 Tian Tian Ruyuan Zhu Chenyue Liu Xin Fang Dongwei Zhang Min Fu Sihua Gao dandan zhao 《Journal of Traditional Chinese Medical Sciences》 CAS 2022年第3期321-329,共9页
Objective: We aimed to observe the effects of loganin(Log) on serum glycolipid levels and probe the mechanisms focusing on intestinal flora and AMP-activated protein kinase(AMPK) signaling in obese mice.Methods: A hig... Objective: We aimed to observe the effects of loganin(Log) on serum glycolipid levels and probe the mechanisms focusing on intestinal flora and AMP-activated protein kinase(AMPK) signaling in obese mice.Methods: A high-fat diet was given for 12 consecutive weeks to generate the obesity model in institute of cancer research(ICR) mice. Body weight was measured weekly and fasting blood glucose(FBG) was determined every 2 weeks. Both the oral glucose tolerance test and the intraperitoneal insulin tolerance test were performed. The serum levels of total cholesterol(TC), triglyceride, high-density lipoproteincholesterol, low-density lipoprotein-cholesterol(LDL-C), and free fatty acids(FFA) were measured. The expression of key proteins in the AMPK signaling pathway in skeletal muscle tissue was detected by immunoblotting, and gut microbiota were characterized using 16S rDNA sequencing.Results: Log significantly decreased the body weight and the FBG in obese mice(P <.05), and it could restore FBG to normal levels. The total cholesterol, LDL-C, and FFA levels were significantly reduced by Log compared with the obese controls(TC: P =.0020;LDL-C: P =.0233;FFA: P =.0127), and the glucose tolerance of animals was significantly improved(P =.0477). The western blot results showed that Log could upregulate the protein expression of Adenosine 5‘-monophosphate(AMP)-activated protein kinase(AMPKa), Sirtuin 1(SIRT1), and peroxisome proliferator-activated receptor-gamma coactivator-1 alpha(PGC1a) in skeletal muscle tissue of obese mice. 16S rDNA sequencing indicated that Log reduced the diversity of the gut flora in feces and altered the floral composition of obese mice.Conclusions: Log was effective in reducing body weight and improving glucolipid metabolism in obese mice, probably through activating AMPK signaling and regulating intestinal microbial diversity. 展开更多
关键词 LOGANIN Insulin resistance OBESITY Glucose metabolism Lipid metabolism Gut microbiota AMPK signaling Pathway Mechanisms
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Quantification of the impact of environmental factors on chlorophyll in the open ocean
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作者 dandan zhao Le GAO Yongsheng XU 《Journal of Oceanology and Limnology》 SCIE CAS CSCD 2021年第2期447-457,共11页
Many previous studies of the impact of oceanic environmental factors on chlorophyll(CHL)in a specific region focused on sea surface temperature(SST),mixed-layer depth(MLD),or wind stress(WS)alone.In this study,relatio... Many previous studies of the impact of oceanic environmental factors on chlorophyll(CHL)in a specific region focused on sea surface temperature(SST),mixed-layer depth(MLD),or wind stress(WS)alone.In this study,relationship between CHL and all those environmental factors(SST,MLD,and WS)in the open ocean was quantified for five regions within the subtropical gyres and the variation trend of 13-year(2003–2015)was analyzed using satellite observations and Argo measurements.The correlation analysis results show that MLD was correlated positively with CHL,SST was correlated negatively with CHL,and the correlation between CHL and WS was either positive or negative.Based on the significance of the correlations,models representing the relationships were established using the multiple linear regression and analyzed,showing that the environmental factors were the major determinants of CHL change.The regression coefficients show that both SST and MLD have remarkable effect on CHL.Our derived models could be used to diagnose the past changes,understand present variability,and predict the future state of CHL changes based on environmental factors,and help us understand the dynamics of CHL variation in the open ocean. 展开更多
关键词 chlorophyll(CHL) mixed layer depth(MLD) multiple linear regression sea surface temperature(SST)
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Overcoming the Limitation of Cs_(2)AgBiBr_(6) Double Perovskite Solar Cells Through Using Mesoporous TiO_(2) Electron Extraction Layer
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作者 dandan zhao Chao Liang +7 位作者 Bingzhe Wang Tanghao Liu Qi Wei Kaiyang Wang Hao Gu Sisi Wang Shiliang Mei Guichuan Xing 《Energy & Environmental Materials》 SCIE EI CAS CSCD 2022年第4期1317-1322,共6页
Lead-free double perovskite Cs_(2)AgBiBr_(6) has gained increasing attention recently.However,the power conversion efficiency(PCE)of Cs_(2)AgBiBr_(6) perovskite solar cells(PSCs)is still low compared with their lead-b... Lead-free double perovskite Cs_(2)AgBiBr_(6) has gained increasing attention recently.However,the power conversion efficiency(PCE)of Cs_(2)AgBiBr_(6) perovskite solar cells(PSCs)is still low compared with their lead-based counterparts.Here,by using photoluminescence(PL),time-resolved photoluminescence(TRPL),and ultrafast transient absorption(TA)measurements,the unbalance between the electron and hole in diffusion and transfer,which limits the performance of the Cs_(2)AgBiBr_(6) PSCs,was further revealed.Considering this issue,a strategy of using the mesoporous TiO_(2) electron transport layer(ETL)to construct a bulk heterojunction in Cs_(2)AgBiBr_(6) PSCs was proposed.Consequently,the PCE had improved by over 24%comparing with that only used compact TiO_(2) ETL.Moreover,based on mesoporous TiO_(2),the unencapsulated Cs_(2)AgBiBr_(6) PSCs maintained 90%of their initial performance after approximately 1200 h of storage in a desiccator(humidity~30%).This work gives further understanding of Cs_(2)AgBiBr_(6) perovskite and demonstrates that a proper design of balancing the electron and hole diffusion can improve device performance. 展开更多
关键词 bulk heterostructure charge carrier dynamics Cs_(2)AgBiBr_(6) lead-free double perovskite solar cells
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Ginsenoside rg3 reduces body weight by regulating fat content and browning in obese mice
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作者 Qianqian Mu Jiacheng Zuo +7 位作者 dandan zhao Xiaoshan Zhou Jing Hua Ying Bai Fangfang Mo Xin Fang Min Fu Sihua Gao 《Journal of Traditional Chinese Medical Sciences》 2021年第1期65-71,共7页
Objective:To determine the effects of ginsenoside rg3 on the body weight of C57BL/6J obese mice and to investigate its underlying weight loss mechanisms with a focus on white fat browning-related factors.Methods:Eight... Objective:To determine the effects of ginsenoside rg3 on the body weight of C57BL/6J obese mice and to investigate its underlying weight loss mechanisms with a focus on white fat browning-related factors.Methods:Eight-week-old C57BL/6J male mice were fed a high-fat diet for 12 successive weeks to construct the obese model.C57BL/6J male mice were fed a standard chow diet to construct normal control group.After 8 weeks of intervention with ginsenoside rg3,the food intake,body weight,body fat mass,blood sugar,and lipid profiles of the mice in each group were detected.Hematoxylin and eosin(HE)staining was used to observe the histological morphology of the adipose tissues.Real-time polymerase chain reaction(RT-PCR)and Western blotting(WB)were applied to detect the gene and protein expression levels of peroxisome proliferators-activated receptor gama(PPARg),Peroxisome proliferatoractivated receptor-gamma coactivator-1alpha(PGC-1a),PR domain containing 16(PRDM16),and uncoupling protein 1(UCP-1).Results:Compared to normal control group mice,the body weight,food intake,body fat composition,and blood lipid levels of model group mice increased significantly.After 8 weeks of intervention with ginsenoside rg3,body weight,body fat composition,food intake,and blood lipid profiles decreased.HE staining showed that ginsenoside rg3 can improve white adipocyte hypertrophy to a certain extent.RTPCR and WB demonstrated that ginsenoside rg3 can increase the mRNA and protein expression levels of PPARg,PGC-1a,PRDM16,and UCP-1 in the adipose tissues of obese mice.Conclusion:The weight reduction effect of ginsenoside rg3 may be related to the promotion of white fat browning. 展开更多
关键词 Ginsenoside rg3 White fat BROWNING OBESITY
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Cloning and Bioinformatics Analysis of <i>Rosa rugose S</i>Locus F-Box Gene (<i>RrSLF</i>)
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作者 Yuyuan Wei Kang Li +5 位作者 Shutang Xing dandan zhao Changli Fu Lanyong zhao Dekui Zang Xiaoyan Yu 《American Journal of Plant Sciences》 2017年第7期1550-1559,共10页
In order to reveal the phenomenon of R. rugose pollination incompatibility, the full-length cDNA sequence of S Locus F-box Gene was cloned for the first time from the pollen of Rosa rugose “Zilong wochi” with RT-PCR... In order to reveal the phenomenon of R. rugose pollination incompatibility, the full-length cDNA sequence of S Locus F-box Gene was cloned for the first time from the pollen of Rosa rugose “Zilong wochi” with RT-PCR and RACE methods and named as RrSLF. The full-length cDNA is 1236 bp with an open reading frame of 1122 bp, encoding 343 amino acids. The derived protein has a molecular weight of 43.7 kD, a calculated pI of 6.24, an F-box conserved domain at position 343 - 741, and belongs to F-box family. The derived protein is a Hydrophobicity protein secreted into the cytoplasm. There is no transmembrane domain and no signal peptide cleavage site, twenty-one Ser phosphorylation sites, seven Thr phosphorylation sites, seven Tyr phosphorylation sites, two N-glycosylation sites, and no O-glycosylation sites. There are 22.25% α-helixes, 31.37% random coil, 32.17% extended peptide chain, and 14.21% β-corner structure. This protein and the SFB/SLF protein from Rosaceae Prunus fruit, including Prunus speciose, share a sequence homology of 59% - 61%;all of the proteins contain an F-box conserved domain, two hypervariable regions HVa, HVb, and two variable regions V1, V2. Furthermore, their phylogenetic relationships are consistent with their traditional classifications. These results were meaningful to reveal the molecular mechanism of Rosa rugose pollination incompatibility and improve the theory and techniques of breeding ornamental Rosa rugose. 展开更多
关键词 ROSA RUGOSA SFB/SLF Gene Clone GAMETOPHYTE Self INCOMPATIBILITY
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Cloning and Bioinformatics Analysis of <i>Rosa rugosa</i>TFL1 Gene (<i>RrTFL1</i>)
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作者 dandan zhao Xiao Wei +2 位作者 Leilei Wang Lanyong zhao Xiaoyan Yu 《Advances in Bioscience and Biotechnology》 2017年第6期185-194,共10页
In order to determine if the TFL1 is related with the continuous flowering phenotype of wild Rosa rugosa from Muping, the full-length cDNA sequence of TFL1 Gene was cloned for the first time from the flower buds of wi... In order to determine if the TFL1 is related with the continuous flowering phenotype of wild Rosa rugosa from Muping, the full-length cDNA sequence of TFL1 Gene was cloned for the first time from the flower buds of wild Rosa rugosafrom Muping with RT-PCR and RACE methods and named as RrTFL1. The full-length cDNA is 973 bp with an open reading frame of 519 bp, encoding 172 amino acids. The derived protein has a molecular weight of 19.48 kD, a calculated pI of 9.13, a c100227 conserved domain at position 1-172, and belongs to PEBP family. The derived protein is a Hydrophilic protein secreted into the cytoplasmic. There is no transmembrane domain and no signal peptide cleavage site, five Ser phosphorylation sites, seven Thr phosphorylation sites, three Tyr phosphorylation sites, one O-glycosylation site, and no N-glycosylation sites. There are 24.42% α-helixes, 36.63% random coil, 27.91% extended peptide chain, and 11.05% β-corner structure. This protein and the TFL1 protein from Rosaceae plants, including Rosa chinensis, share a sequence homology of 87% - 96%. All of the proteins contain a c100227 conserved domain, two highly conserved modules D-P-D-x-P, G-x-H-R, and two functional sites His, Asp. Furthermore, their phylogenetic relationships are consistent with their traditional classifications. These results not only laid a foundation for further researching the expression and function of RrTFL1, but also cultivating new varieties of R. rugosawhich can flower continuously by gene engineering. 展开更多
关键词 ROSA RUGOSA TFL1 Gene CLONE Biological Analysis
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Water consumption and biodiversity:Responses to global emergency events
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作者 dandan zhao Junguo Liu +15 位作者 Laixiang Sun Klaus Hubacek Stephan Pfister Kuishuang Feng Heran Zheng Xu Peng Daoping Wang Hong Yang Lei Shen Fei Lun Xu zhao Bin Chen Marko Keskinen Shaohui Zhang Jialiang Cai Olli Varis 《Science Bulletin》 SCIE EI CAS CSCD 2024年第16期2632-2646,共15页
Given that it was a once-in-a-century emergency event,the confinement measures related to the coronavirus disease 2019(COVID-19)pandemic caused diverse disruptions and changes in life and work patterns.These changes s... Given that it was a once-in-a-century emergency event,the confinement measures related to the coronavirus disease 2019(COVID-19)pandemic caused diverse disruptions and changes in life and work patterns.These changes significantly affected water consumption both during and after the pandemic,with direct and indirect consequences on biodiversity.However,there has been a lack of holistic evaluation of these responses.Here,we propose a novel framework to study the impacts of this unique global emergency event by embedding an environmentally extended supply-constrained global multi-regional input-output model(MRIO)into the drivers-pressure-state-impact-response(DPSIR)framework.This framework allowed us to develop scenarios related to COVID-19 confinement measures to quantify country-sector-specific changes in freshwater consumption and the associated changes in biodiversity for the period of 2020-2025.The results suggest progressively diminishing impacts due to the implementation of COVID-19 vaccines and the socio-economic system’s self-adjustment to the new normal.In 2020,the confinement measures were estimated to decrease global water consumption by about 5.7% on average across all scenarios when compared with the baseline level with no confinement measures.Further,such a decrease is estimated to lead to a reduction of around 5% in the related pressure on biodiversity.Given the interdependencies and interactions across global supply chains,even those countries and sectors that were not directly affected by the COVID-19 shocks experienced significant impacts:Our results indicate that the supply chain propagations contributed to 79% of the total estimated decrease in water consumption and 84%of the reduction in biodiversity loss on average.Our study demonstrates that the MRIO-enhanced DSPIR framework can help quantify resource pressures and the resultant environmental impacts across supply chains when facing a global emergency event.Further,we recommend the development of more locally based water conservation measures—to mitigate the effects of trade disruptions—and the explicit inclusion of water resources in post-pandemic recovery schemes.In addition,innovations that help conserve natural resources are essential for maintaining environmental gains in the post-pandemic world. 展开更多
关键词 Global emergency events Water-biodiversity causal effect COVID-19 BIODIVERSITY MRIO-enhanced DPSIR framework Supply-chain network High-resolution water consumption dataset Supply-constrained multi-regional input-output(mixed MRIO)model
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A comprehensive analysis of the Bencao(herbal)small RNA Atlas reveals novel RNA therapeutics for treating human diseases 被引量:6
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作者 Yinghao Cao Yexuan Lin +23 位作者 Na Sun Xinyi Du Yixin Dong Song Mei Xingyu Deng Xiaobei Li Shaoting Guo Kegong Tang Jiaqi Liu Xiangyu Qiao dandan zhao Yuhao Qin Cong Zhang Tianyi Xin Xiaohu Shi Congzhao Zhou Tao Dong De-an Guo Benedikt MKessler Dong Xu Jingyuan Song Fengming Huang Xiaoyue Wang Chengyu Jiang 《Science China(Life Sciences)》 SCIE CAS CSCD 2023年第10期2380-2398,共19页
Cross-kingdom herbal mi RNA was first reported in 2012.Using a modified herbal extraction protocol,we obtained 73,677,287sequences by RNA-seq from 245 traditional Chinese Medicine(TCM),of which 20,758,257 were unique ... Cross-kingdom herbal mi RNA was first reported in 2012.Using a modified herbal extraction protocol,we obtained 73,677,287sequences by RNA-seq from 245 traditional Chinese Medicine(TCM),of which 20,758,257 were unique sequences.We constructed a Bencao(herbal)small RNA(s RNA)Atlas(http://bencao.bmicc.cn),annotated the sequences by sequence-based clustering,and created a nomenclature system for Bencao s RNAs.The profiles of 21,757 mi RNAs in the Atlas were highly consistent with those of plant mi RNAs in mi RBase.Using software tools,our results demonstrated that all human genes might be regulated by s RNAs from the Bencao s RNA Atlas,part of the predicted human target genes were experimentally validated,suggesting that Bencao s RNAs might be one of the main bioactive components of herbal medicines.We established roadmaps for oligonucleotide drugs development and optimization of TCM prescriptions.Moreover,the decoctosome,a lipo-nano particle consisting of 0.5%–2.5%of the decoction,demonstrated potent medical effects.We propose a Bencao(herbal)Index,including small-molecule compounds(SM),protein peptides(P),nucleic acid(N),non-nucleic and non-proteinogenic large-molecule compounds(LM)and elements from Mendeleev's periodic table(E),to quantitatively measure the medical effects of botanic medicine.The Bencao s RNA Atlas is a resource for developing gene-targeting oligonucleotide drugs and optimizing botanical medicine,and may provide potential remedies for the theory and practice of one medicine. 展开更多
关键词 small RNA herbal decoction cross-kingdom regulation traditional Chinese medicine RNA oligonucleotide drug RNA therapeutics Bencao small RNA Atlas
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Orally administered BZL-s RNA-20 oligonucleotide targeting TLR4 effectively ameliorates acute lung injury in mice 被引量:4
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作者 dandan zhao Yuhao Qin +16 位作者 Jiaqi Liu Kegong Tang Shuaiyao Lu Zirui Liu Yexuan Lin Cong Zhang Fengming Huang Jiahui Chang Chang Li Mingyao Tian Yiming Ma Xiaoyun Li Congzhao Zhou Xiao Li Xiaozhong Peng Ningyi Jin Chengyu Jiang 《Science China(Life Sciences)》 SCIE CAS CSCD 2023年第7期1589-1599,共11页
The global COVID-19 pandemic emerged at the end of December 2019.Acute respiratory distress syndrome(ARDS)and acute lung injury(ALI)are common lethal outcomes of bacterial lipopolysaccharide(LPS),avian influenza virus... The global COVID-19 pandemic emerged at the end of December 2019.Acute respiratory distress syndrome(ARDS)and acute lung injury(ALI)are common lethal outcomes of bacterial lipopolysaccharide(LPS),avian influenza virus,and SARS-Co V-2.Toll-like receptor 4(TLR4)is a key target in the pathological pathway of ARDS and ALI.Previous studies have reported that herbal small RNAs(s RNAs)are a functional medical component.BZL-s RNA-20(Accession number:B59471456;Family ID:F2201.Q001979.B11)is a potent inhibitor of Toll-like receptor 4(TLR4)and pro-inflammatory cytokines.Furthermore,BZLs RNA-20 reduces intracellular levels of cytokines induced by lipoteichoic acid(LTA)and polyinosinic-polycytidylic acid(poly(I:C)).We found that BZL-s RNA-20 rescued the viability of cells infected with avian influenza H5N1,SARS-Co V-2,and several of its variants of concern(VOCs).Acute lung injury induced by LPS and SARS-Co V-2 in mice was significantly ameliorated by the oral medical decoctosome mimic(bencaosome;sphinganine(d22:0)+BZL-s RNA-20).Our findings suggest that BZLs RNA-20 could be a pan-anti-ARDS/ALI drug. 展开更多
关键词 oligonucleotide drug herbal medicine ARDS/ALI SARS-CoV-2
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