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13篇 您的检索式:作者名="Wang Rongfei"
    题名 作者 年代 出处 被引量
1Cadmium accumulation and tolerance of two castor cultivars in relation to antioxidant systems显示文摘To investigate the effects of Cd on tolerance and antioxidant activities of castor, two different castor(Ricinus communis L.) cultivars(Zibo No. 5 and Zibo No. 8) were used for a hydroponic experiment(0, 1 and 2 mg/L Cd) and a pot experiment using Cd-contaminated soil(34 mg/kg) with the addition of ethylenedinitrilotetraacetic acid(EDTA). The results indicated that there were significant differences between the two cultivars with respect to Cd uptake in shoots(113–248 mg/kg for Zibo No. 5 and 130–288 mg/kg Zibo No. 8), biomass tolerance indexes(64.9%–74.6% for Zibo No. 5 and 80.1%–90.9% for Zibo No. 8) in the hydroponic experiment and survival rates(0% for Zibo No. 5 and 100% for Zibo No. 8)determined by the addition of EDTA in the pot experiment, suggesting that Zibo No. 8 has higher tolerance than Zibo No. 5. Moreover, the castor cultivars have low bioconcentration factors(4.80% for Zibo No. 5 and 5.43% for Zibo No. 8) and low translocation factors(<1%).Consequently, Zibo No. 8 can participate in Cd phytostabilization in highly Cd-polluted areas. The results indicated that glutathione(GSH) as a non-enzymatic antioxidant, and antioxidant enzymes including superoxide dismutase(SOD), catalase(CAT) and guaiacol peroxidase(GPX), were cultivar- and dose-dependent. The higher tolerance of Zibo No. 8compared with Zibo No. 5 can be attributed to the higher GSH levels in the root and higher GPX activity in the leaf.Hanzhi Zhang Qingjun Guo Junxing Yang Tongbin Chen Guangxu Zhu Marc Peters Rongfei Wei Liyan Tian Chunyu Wang Deyun Tan Jie Ma Gangming Wang Yingxin Wan 2014Journal of Environmental Sciences2014,26,10:15
2CKIP-1 regulates macrophage proliferation by inhibiting TRAF6-mediated Akt activation显示文摘巨噬细胞在开发,动态平衡,织物修理和免疫起枢轴的作用。巨噬细胞增长被刺激殖民地的因素(M-CSF ) 导致了 Akt 发信号的巨噬细胞支持;然而,这个过程怎么被终止,仍然保持不清楚。这里,我们作为巨噬细胞增长的一个新奇禁止者识别酷蛋白 kinase 2-interacting protein-1 (CKIP-1 ) 。在放松巨噬细胞, CKIP-1 是在由组成地活跃的 GSK3β 的丝氨酸 342 点的 phosphorylated;, Akt 的下游的目标。这 phosphorylation 触发 CKIP-1 的 polyubiquitination 和 proteasomal 降级。在 M-CSF 刺激之上, Akt 被 CSF-1R-PI3K 激活然后使 GSK3β 失去活性;,导致 CKIP-1 和 β 的稳定; -catenin 蛋白质。β -catenin 包括 cyclin D 和 c-Myc 支持增长基因的表示。CKIP-1 与 TRAF6,为连接 K63 的 ubiquitination 要求的 ubiquitin ligase 和 Akt 的血浆膜招募交往,并且终止调停 TRAF6 的 Akt 激活。由这个工具, CKIP-1 在 M-CSF 刺激以后在迟了的阶段明确地禁止巨噬细胞增长。而且, CKIP-1 缺乏在老鼠自发地开发的 vitro 和 CKIP-1 −/− 导致增加的增长和巨噬细胞的减少的 apoptosis 巨噬细胞主导的脾大和 myeloproliferation。一起,这些数据证明 CKIP-1 由禁止调停 TRAF6 的 Akt 激活在巨噬细胞动态平衡的规定起一个关键作用。Luo Zhang Yiwu Wang Fengjun Xiao Shaoxia Wang Guichun Xing Yang Li Xiushan Yin Kefeng Lu Rongfei Wei Jiao Fan Yuhan Chen Tao Li Ping Xie Lin Yuan Lei Song Lanzhi Ma Lujing Ding Fuchu He Lingqiang Zhang 2014Cell Research2014,24,6:7
3The effect of Fe-Mn minerals and seawater interface and enrich-ment mechanism of ore-forming elements of polymetallic crusts and nodules from the South China Sea显示文摘Ferromanganese crusts and nodules are important submarine mineral resources that contain various metal elements with significant economic value. In this study, polymetallic crusts and nodules obtained from the South China Sea(SCS) were determined by using X-ray power diffraction(XRD), Raman spectroscopy(RS), Fourier transform infrared spectroscopy(FTIR), and X-ray photoelectron spectroscopy(XPS) to systematically investigate and analyze the mineralogical and spectral characteristics of the Fe-Mn minerals. XRD measurements revealed that the SCS polymetallic crusts and nodules were composed of vernadite, quartz, and plagioclase. The nodules also contained todorokite. The Fe-phase minerals of the SCS crusts and nodules were composed of amorphous Fe oxide/hydroxide, and the Mn-and Fe-phases minerals exhibited relatively poor degrees of crystallization. FTIR results showed that the Fe-Mn minerals in the crusts and nodules included a large number of surface hydroxyl groups. These surface hydroxyl groups contained protons that could provide reactive sites for complexation of ore-forming elements in seawater. XPS results indicated that the surfaces of the Fe-Mn minerals mainly contained Fe, Mn, and O. Fe was present in the trivalent oxidation state, while Mn, which may contain several bivalent oxidation state, was present in the tetravalent and trivalent oxidation states. The SCS polymetallic crusts and nodules were compared with Pacific seamount crusts, and results showed that the surface hydroxyl(-OH) groups of the SCS crusts and nodules numbered more than the lattice oxygen(O^(2-)). But the lattice oxygen of Pacific seamount crusts numbered more than the surface hydroxyl groups. This characteristic indicated that the degree of crystallization of Fe-Mn minerals from the Pacific Ocean was higher than that of minerals from the South China Sea. Comprehensive studies showed that ore-forming elements in the interface between seawater and the Fe-Mn minerals in the submarine ferromanganese crusts and nodules employed the following enrichment mechanisms:(1) the metal ion complexed with the surface hydroxyl of Fe-Mn minerals to form hydroxyl complexes, which were connected by coordination bonds or stable inner-sphere complexes that exchanged protons on the mineral surfaces;(2) the charged surfaces of the minerals and metal cations formed outer-sphere complexes, which made up the electrostatic double layer, through electrostatic adsorption; and(3) the metal cations isomorphously exchanged the Mn and Fe ions of the mineral lattice structure.GUAN Yao SUN Xiaoming IANG Xiaodong SA Rina ZHOU Li HUANG Yi LIU Yating LI Xiaojie LU Rongfei WANG Chi 2017Acta Oceanologica Sinica2017,36,6:4
4Effects of the standardized ileal digestible lysine to metabolizable energy ratio on performance and carcass characteristics of growing-finishing pigs显示文摘A total of 2,121 growing-finishing pigs (Duroc × Landrace × Large White) were utilized in six experiments conducted to determine the effects of different ratios of standardized ileal digestible lysine (SID-Lys) to metabolizable energy (ME) on the performance and carcass characteristics of growing-finishing pigs. Exps. 1 (30 to 50 kg), 2 (52 to 70 kg) and 3 (81 to 104 kg) were conducted to find an optimum ME level and then this level was used in Exps. 4 (29 to 47 kg), 5 (54 to 76 kg) and 6 (84 to 109 kg) to test the response of pigs to different ratios of SID-Lys:ME. In Exps.1 to 3, four treatments were used consisting of diets with a formulated ME content of 3.1, 3.2, 3.3 or 3.4 in Exps. 1 and 2 while Exp. 3 used 3.05, 3.15, 3.25 or 3.35 Mcal/kg. A constant SID-Lys:ME ratio of 2.6, 2.3 or 2.0 g/Mcal was used in Exps. 1, 2 and 3, respectively. Weight gain was significantly increased with increasing energy level in Exp.1 while weight gain was unaltered in Exps. 2 and 3. For all three experiments, feed intake was decreased (P < 0.05) and feed efficiency was improved (P < 0.05) with increasing energy level. Tenth rib back fat thickness linearly increased (P < 0.05) with increasing energy level. In Exps. 4 to 6, five treatments were used consisting of diets with a SID-Lys:ME ratio of 2.4, 2.6, 2.8, 3.0 or 3.2 in Exp. 1, 2.1, 2.3, 2.5, 2.7, 2.9 or 3.2 in Exp. 2 and 1.8, 2.0, 2.2, 2.4, or 2.6 in Exp. 3. A constant ME level 3.2, 3.2 and 3.05 Mcal/kg was used in Exps. 1, 2 and 3, respectively (selected based on the results of weight gain). For all three experiments, weight gain increased (P < 0.05) and feed efficiency improved linearly (P < 0.05) as the SID-Lys:ME ratio increased. Tenth rib back fat thickness linearly decreased (P < 0.05) as the SID-Lys:ME ratio increased. Based on a straight broken-line model, the estimated SID-Lys:ME ratio to maximize weight gain was 3.0, 2.43 and 2.2 for 29 to 47, 54 to76 and 84 to 109 kg of pigs, respectively.Pengfei Li Zhikai Zeng Ding Wang Lingfeng Xue Rongfei Zhang Xiangshu Piao 2012Journal of Animal Science and Biotechnology2012,3,1:3
5High-performance SSZ-13 membranes prepared using ball-milled nanosized seeds for carbon dioxide and nitrogen separations from methane显示文摘SSZ-13 membranes with high separation performances were prepared using ball-milled nanosized seeds by once hydrothermal synthesis.Separation performances of SSZ-13 membranes in CO2/CH4 and N2/CH4 mixtures were enhanced after synthesis modification.Single-gas permeances of CO2,N2 and CH4 and ideal selectivities were recorded through SSZ-13 membranes.The effects of temperature,pressure,feed flow rate and humidity on separation performance of the membranes were discussed.Three membranes prepared after synthesis modifications had an average CO2 permeance of 1.16×10-6 mol·(m2·s·Pa)-1(equal to 3554 GPU)with an average CO2/CH4 selectivity of 213 in a 50 vol%/50 vol%CO2/CH4 mixture.It suggests that membrane synthesis has a good reproducible.The membrane also displayed a N2 permeance of 1.07×10-7 mol·(m2·s·Pa)-1(equal to 320 GPU)with a N2/CH4 selectivity of 13 for a 50 vol%/50 vol%N2/CH4 mixture.SSZ-13 membrane displayed stable and good separation performance in the wet CO2/CH4 mixture for a long test period over 100 h at 348 K.The current SSZ-13 membranes show great potentials for the simultaneous removals of CO2 and N2 in natural gas purification as a facile process suitable for industrial application.Xinping Li Yaowei Wang Tangyin Wu Shichao Song Bin Wang Shenglai Zhong Rongfei Zhou 2020Chinese Journal of Chemical Engineering2020,28,5:3
6Mechanical prop- erties and crystal structure of HDPE induced by small amount nf high - molecular - weight and low - molecular - weight polyethy- lene under shear stress produced by dynamic packing injection Molding显示文摘Chen Zhanehun Gao Lei Wang Rongfei 2009Polymer- Plastics Technology and Engineering2009,48,3:1
7Preparation and upconversion emission properties of Yb, Er co-doped Y 2 Ti 2 O 7 upconversion inverse opal显示文摘Zhengwen Yang Jialun Zhu Dong Yan Hangjun Wu Rongfei Wang Zhiguo Song Xue Yu Yong Yang Dacheng Zhou Zhaoyi Yin Jianbei Qiu 2012Optical Materials2012,,:1
8Washing out heavy metals from contaminated soils from an iron and steel smelting site显示文摘洗是为由化学动员分开土壤 ex-situ 的粒子一定的沾染物的一个有希望的方法。实验室批洗实验用 deionized 水和草酸酸的变化集中被进行,柠檬性的酸的、酒石的酸,醋酸,盐酸酸和 ethylenediaminetetra 醋酸( EDTA )弄脏估计把这些化学药品用作洗代理人的效率并且重重地从二清理重金属从一个熨斗和 streel 熔炼地点的土壤。毒性减小索引和补习费用被分析,并且结果证明土壤与 Cd, Pb 和 Zn 被弄脏。盐酸酸和 EDTA 是比在测试土壤的补习的另外的洗的代理人更有效的。最大的全部的毒性减小索引显示出毛孔散开不是在吸附过程的限制率的步的那 0.5 molggests。覰?覰??Guangxu ZHU Qingjun GUO Junxing YANG Hanzhi ZHANG Rongfei WEI Chunyu WANG Marc PETERS Xiaoyong ZHOU Jun YANG 2015Frontiers of Environmental Science & Engineering2015,9,4:1
9Explore the nucleolus: unveiling the hidden layer with superresolution microscopy显示文摘The nucleolus, a well-known membraneless organelle and the largest substructure with the highest transcriptional activity in the nucleus, was discovered over 200 years ago and is best known for its critical role in ribosome biogenesis(Kresoja-Rakic and Santoro, 2019;Navarro, 2019). Previous studies have reported that the nucleolus comprises three radially distributed layers known as the fibrillar center (FC).Rongfei Wei Xinyu Wang Dong Li 2023Science China(Life Sciences)2023,66,9:0
10Centimeter-sized Cs_(3)Cu_(2)I_(5)single crystals grown by oleic acid assisted inverse temperature crystallization strategy and their films for high-quality X-ray imaging显示文摘Low-dimensional halide perovskites have become the most promising candidates for X-ray imaging,yet the issues of the poor chemical stability of hybrid halide perovskite,the high poisonousness of lead halides and the relatively low detectivity of the lead-free halide perovskites which seriously restrain its commercialization.Here,we developed a solution inverse temperature crystal growth(ITCG)method to bring-up high quality Cs_(3)Cu_(2)I_(5)crystals with large size of centimeter order,in which the oleic acid(OA)is introduced as an antioxidative ligand to inhibit the oxidation of cuprous ions effieiently,as well as to decelerate the crystallization rate remarkalby.Based on these fine crystals,the vapor deposition technique is empolyed to prepare high quality Cs_(3)Cu_(2)I_(5)films for efficient X-ray imaging.Smooth surface morphology,high light yields and short decay time endow the Cs_(3)Cu_(2)I_(5)films with strong radioluminescence,high resolution(12 lp/mm),low detection limits(53 nGyair/s)and desirable stability.Subsequently,the Cs_(3)Cu_(2)I_(5)films have been applied to the practical radiography which exhibit superior X-ray imaging performance.Our work provides a paradigm to fabricate nonpoisonous and chemically stable inorganic halide perovskite for X-ray imaging.Tao Chen Xin Li Yong Wang Feng Lin Ruliang Liu Wenhua Zhang Jie Yang Rongfei Wang Xiaoming Wen Bin Meng Xuhui Xu Chong Wang 2023Journal of Energy Chemistry2023,,4:0
11Chalcogen-dependent catalytic properties of RuX2 (X = S/Se/Te) nanoparticles decorated carbon nanofibers for hydrogen evolution in acidic and alkaline media显示文摘Transition metal dichalcogenides(TMDs),with the general formula MX_(2)(M=Mo/W/Fe/Co/Ni,etc.;X=S/Se/Te),have attracted extensive research interests for hydrogen evolution reaction(HER).Compared with numerous studies on noble-metal-free TMDs,the chalcogen-dependent HER catalytic properties of noble-metal-based TMDs are lack of sufficient research attention.Herein,a facile electrospinning-assisted synthetic strategy is proposed to synthesize ruthenium dichalcogenides(RuX_(2),X=S/Se/Te)nanoparticles decorated carbon nanofibers(CNFs).Benefiting from the identical nanofibrous morphology and exposed crystal planes of RuX_(2)(111),the catalytic activities of RuX_(2)@CNFs samples were investigated and compared in a fair and direct manner.Detailed electrochemical measurements coupled with density functional theory calculations were carried out to probe their intrinsic HER catalytic activities,resulting in the catalytic activity order of RuS_(2)@CNFs>RuSe_(2)@CNFs>RuTe_(2)@CNFs in acidic media and that of RuS_(2)@CNFs>RuTe_(2)@CNFs>RuSe_(2)@CNFs in alkaline media.The superior catalytic performance of RuS_(2)@CNFs mainly stems from the relative lower HER energy barriers and thereby the higher intrinsic catalytic activity of RuS_(2)(111),leading to ultralow overpotentials of 44 and 9 mV at 10 mA·cm^(-2) in acidic and alkaline media,respectively.RuSe_(2)(111)is endowed with the more optimized Gibbs free energy of hydrogen adsorption(ΔGH*)than RuTe_(2)(111),but RuTe_(2)(111)shows enhanced catalytic property for H_(2)O dissociation and OH-desorption than RuSe_(2)(111),therefore,resulting in the altered catalytic activity sequences for RuSe_(2) and RuTe_(2) in acidic and alkaline media.Chengkai He Yue Wei Jia Xu Yujie Wei Tao Wang Rongfei Liu Lvlv Ji Zhun Liu Sheng Wang 2024Nano Research2024,17,4:0
12Effects of the Standardized Ileal Digestible Lysine to Metabolizable Energy Ratio on Performance,Nutrient Digestibility,and Plasma Parameters of 10 to 28 kg Pigs显示文摘A total of 480 nursery pigs (Duroc×Landrace×Large White) were utilized in two experiments conducted to determine the effects of different ratios of standardized ileal digestible lysine (SID-Lys) to metabolizable energy (ME) ratio on the performance,nutrient digestibility,plasma urea nitrogen (PUN),and plasma free amino acids of 10 to 28 kg pigs.In Exp.1,192 pigs (10.58 kg) were assigned to one of four treatments.The treatments consisted of diets with a ME content of 3.2,3.25,3.3,or 3.35 Mcal/kg with a constant SID-Lys:ME ratio of 3.7 g/Mcal.The experiment lasted 28 days.Pigs which were fed the diets containing 3.3 and 3.35 Mcal/kg ME had lower feed intakes (P<0.05) than those fed 3.2 Mcal/kg.Feed efficiency was linearly improved with increasing dietary ME (P<0.05).Increasing the dietary ME level also increased (P<0.05) dry matter and energy digestibility.Therefore,3.3 Mcal/kg ME was selected for Exp.2 in which 288 pigs (10.60 kg) were assigned to one of six treatments.Treatments consisted of SID-Lys:ME ratios of 3.1,3.3,3.5,3.7,3.9,or 4.1 g/Mcal with all diets providing 3.3 Mcal of ME/kg.Weight gain and feed efficiency were increased (P<0.05) as the SID-Lys:ME ratio in diet increased.Based on a straight broken-line model,the estimated SID-Lys:ME ratio to maximize weight gain was 3.74.Pengfei Li Xiangshu Piao Zhikai Zeng Ding Wang Lingfeng Xue Rongfei Zhang Bing Dong Sung Woo Kim 2011Journal of Animal Science and Biotechnology2011,2,1:0
13Construction of mechanically robust superamphiphobic surfaces on fiber using large particles显示文摘Superamphiphobic surfaces have attracted the attention of researchers because of their broad application prospects.Currently,superamphiphobicity is primarily achieved by minimizing the solid-liquid contact area.Over the past few decades,researchers have primarily focused on using physical deposition methods to construct superamphiphobic surfaces using fine-sized nanoparticles(<100 nm).However,porous hollow SiO_(2)particles(PH-SiO_(2)),which aretypically large spheres,have a highly hierarchical structure and can provide lower solid-liquid contact fractions than those provided byfine-sized particles.In this study,we used PH-SiO_(2)as building blocks and combined them with poly(dimethylsiloxane)to construct a mechanically robust coating on fiber by spray-coating.After chemical vapordeposition treatment,the coating exhibited excellent superamphiphobicity and could repel various liquids,covering a wide rangeof surfacetensions(27.4-72.0mN-m^(-1)).Chang LV Jinyi WANG Qirong TIAN Zhicheng ZHANG Tao WANG Rongfei LIU Sheng WANG 2022Frontiers of Materials Science2022,16,4:0
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