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| 1 | Paracrine and endocrine actions of bone——the functions of secretory proteins from osteoblasts, osteocytes, and osteoclasts显示文摘The skeleton is a dynamic organ that is constantly remodeled. Proteins secreted from bone cells, namely osteoblasts, osteocytes,and osteoclasts exert regulation on osteoblastogenesis, osteclastogenesis, and angiogenesis in a paracrine manner. Osteoblasts secrete a range of different molecules including RANKL/OPG, M-CSF, SEMA3A, WNT5A, and WNT16 that regulate osteoclastogenesis. Osteoblasts also produce VEGFA that stimulates osteoblastogenesis and angiogenesis. Osteocytes produce sclerostin(SOST) that inhibits osteoblast differentiation and promotes osteoclast differentiation. Osteoclasts secrete factors including BMP6, CTHRC1, EFNB2, S1P, WNT10B, SEMA4D, and CT-1 that act on osteoblasts and osteocytes, and thereby influencea A osteogenesis. Osteoclast precursors produce the angiogenic factor PDGF-BB to promote the formation of Type H vessels, which then stimulate osteoblastogenesis. Besides, the evidences over the past decades show that at least three hormones or 'osteokines'from bone cells have endocrine functions. FGF23 is produced by osteoblasts and osteocytes and can regulate phosphate metabolism. Osteocalcin(OCN) secreted by osteoblasts regulates systemic glucose and energy metabolism, reproduction, and cognition. Lipocalin-2(LCN2) is secreted by osteoblasts and can influence energy metabolism by suppressing appetite in the brain.We review the recent progresses in the paracrine and endocrine functions of the secretory proteins of osteoblasts, osteocytes, and osteoclasts, revealing connections of the skeleton with other tissues and providing added insights into the pathogenesis of degenerative diseases affecting multiple organs and the drug discovery process. | Yujiao Han Xiuling You Wenhui Xing Zhong Zhang Weiguo Zou | 2018 | Bone Research2018,6,2: | 52 |
| 2 | Metabolic engineering and flux analysis of Corynebacterium glutamicum for L-serine production显示文摘L-Serine plays a critical role as a building block for cell growth, and thus it is difficult to achieve the direct fermentation of L-serine from glucose. In this study, Corynebacterium glutamicum ATCC 13032 was engineered de novo by blocking and attenuating the conversion of L-serine to pyruvate and glycine, releasing the feedback inhibition by L-serine to 3-phosphoglycerate dehydrogenase (PGDH), in combination with the co-expression of 3-phosphoglycerate kinase (PGK) and feedback-resistant PGDH (PGDHr). The resulting strain, SER-8, exhibited a lower specific growth rate and significant differences in L-serine levels from Phase I to Phase V as determined for fed-batch fermentation. The intracellular L-serine pool reached (14.22±1.41) μmol gCDM 1, which was higher than glycine pool, contrary to fermentation with the wild-type strain. Furthermore, metabolic flux analysis demonstrated that the over-expression of PGK directed the flux of the pentose phosphate pathway (PPP) towards the glycolysis pathway (EMP), and the expression of PGDHr improved the L-serine biosynthesis pathway. In addition, the flux from L-serine to glycine dropped by 24%, indicating that the deletion of the activator GlyR resulted in down-regulation of serine hydroxymethyltransferase (SHMT) expression. Taken together, our findings imply that L-serine pool management is fundamental for sustaining the viability of C. glutamicum, and improvement of C1 units generation by introducing the glycine cleavage system (GCV) to degrade the excessive glycine is a promising target for L-serine production in C. glutamicum. | LAI ShuJuan ZHANG Yun LIU ShuWen LIANG Yong SHANG XiuLing CHAI Xin WEN TingYi | 2012 | Science China(Life Sciences)2012,55,4: | 15 |
| 3 | Modeling xeroderma pigmentosum associated neurological pathologies with patients-derived iPSCs显示文摘干皮病 pigmentosum (XP ) 是联系 XP 的基因的变化引起的一组基因混乱,导致 DNA 修理的缺陷。XP 病人经常展出神经病学的退化,而是内在的机制是未知的,部分地由于合适的疾病模型的缺乏。这里,我们产生了包括 XPA, XPB, XPC, XPG,和 XPV 在五不同 XP 基因怀有变化的病人特定的导致的 pluripotent 干细胞(iPSCs ) 。这些 iPSCs 进一步被区分到神经房间,并且他们到 DNA 损坏应力的危险性被调查。在神经干细胞(NSC ) 或神经原的 XPA 的变化导致了严重 DNA 损坏修理缺点,并且有变异的 XPA 的这些神经房间对 DNA 导致损坏的 apoptosis 过分敏感。因此, XP 变异的神经房间代表珍贵工具在 XP 病人澄清神经病学的畸形的分子的机制。 | Lina Fu Xiuling Xu Ruotong Ren Jun Wu Weiqi Zhang Jiping Yang Xiaoqing Ren Si Wang Yang Zhao Liang Sun Yang Yu Zhaoxia Wang Ze Yang Yun Yuan Jie Qiao Juan Carlos Izpisua Belmonte Jing Qu Guang-Hui Liu | 2016 | Protein & Cell2016,7,3: | 11 |
| 4 | Unruptured pregnancy in a noncommunicating rudimentary horn at37 weeks with a live fetus:a case report显示文摘We report an extremely rare case of an unruptured non-communicating rudimentary horn full-term pregnancy.A woman who had a uterine malformation was misdiagnosed as uterus didelphys and gave birth to a live,healthy fetus.The correct diagnosis was not made until cesarean section at 37 4/7 weeks.The case suggests that women who are pregnant in a rudimentary horn could obtain a full-term delivery and give birth to a live and healthy baby. | Chen Cheng Weiwei Tang Lei Zhang Mei Luo Meihua Huang Xiuling Wu Guiping Wan | 2015 | The Journal of Biomedical Research2015,29,1: | 11 |
| 5 | A transgene-free method for rapid and efficient generation of precisely edited pigs without monoclonal selection显示文摘Gene-edited pigs for agricultural and biomedical applications are typically generated using somatic cell nuclear transfer(SCNT).However, SCNT requires the use of monoclonal cells as donors, and the time-consuming and laborious monoclonal selection process limits the production of large populations of gene-edited animals. Here, we developed a rapid and efficient method named RE-DSRNP(reporter RNA enriched dual-sg RNA/CRISPR-Cas9 ribonucleoproteins) for generating gene-edited donor cells. RE-DSRNP takes advantage of the precise and efficient editing features of dual-sg RNA and the high editing efficiency, low off-target effects, transgene-free nature, and low cytotoxic characteristics of reporter RNA enriched RNPs(CRISPR-Cas9ribonucleoproteins), thus eliminating the need for the selection of monoclonal cells and thereby greatly reducing the generation time of donor cells from 3–4 weeks to 1 week, while also reducing the extent of apoptosis and chromosomal aneuploidy of donor cells. We applied RE-DSRNP to produce cloned pigs bearing a deletion edit of the wild-type p53-induced phosphatase 1(WIP1)gene: among 32 weaned cloned pigs, 31(97%) carried WIP1 edits, and 15(47%) were homozygous for the designed fragment deletion, and no off-target event was detected. The WIP1 knockout(KO) pigs exhibited male reproductive disorders, illustrating the utility of RE-DSRNP for rapidly generating precisely edited animals for functional genomics and disease research. REDSRNP's strong editing performance in a large animal and its marked reduction in the required time for producing SCNT donor cells support its application prospects for rapidly generating populations of transgene-free cloned animals. | Kui Xu Xiuling Zhang Zhiguo Liu Jinxue Ruan Changjiang Xu Jingjing Che Ziyao Fan Yulian Mu Kui Li | 2022 | Science China(Life Sciences)2022,65,8: | 9 |
| 6 | Self-powered nanofiber-based screen-print triboelectric sensors for respiratory monitoring显示文摘科学、商业的进展将高要求放为便携电子学。然而,便携电子学的电源供应, breathability,和大量生产仍然有需要被克服的许多挑战。在这研究,一个自我动力的基于 nanofiber 的摩擦电传感器(SNTS ) 被批规模制造技术用 electrospinning 制作并且为经由呼吸监视监视的健康打印屏幕。典型地,一个拱门结构的 SNTS 被 nanofiber 膜和一个 Ag nanoparticle 电极装配。nanofibers 的堆积和 Ag nanoparticles 的传导性的网络越过整个设备保证一条煤气的隧道。当时, SNTS 的煤气的渗透象 6.16 mm/s 一样高,它有压到优势的优点与由密封演员组电影组成的通常使用的便携设备相比。由于 nanofiber 膜的柔软,不管它是否被弄弯,扭曲,或合拢, SNTS 显示出优秀电子输出性能。优异性质 SNTS 的皮友好,自我力量,和批制造例如 breathability,在保健监视和多功能的聪明的系统为他们的申请提供巨大的潜力。 | Ran Cao diaona Wang Shuyu Zhao Wei Yang Zuqing Yuan Yingying Yin Xinyu Du Nian-Wu Li Xiuling Zhang Xiuyan Li Zhong Lin Wang Congju Li | 2018 | Nano Research2018,11,7: | 8 |
| 7 | Natural continuous influent nitrifier immigration effects on nitrification and the microbial community of activated sludge systems显示文摘Two sequencing batch reactors(SBRs) were operated for 100 days under aerobic conditions,with one being fed with unsterilized municipal wastewater(USBR), and the other fed with sterilized municipal wastewater(SSBR). Respirometric assays and fluorescence in situ hybridization(FISH) results show that active nitrifiers were present in the unsterilized influent municipal wastewater. The maximum ammonia utilization rate(AUR) and nitrite utilization rate(NUR) of the unsterilized influent were 0.32 ± 0.12 mg NH4+-N/(L·hr) and0.71 ± 0.18 mg NO2--N/(L·hr). Based on the maximum utilization rates, the estimated seeding intensity for the ammonia oxidizing bacteria(AOB) and nitrite oxidizing bacteria(NOB) of the USBR was 0.08 g AOB/(g AOB·day) and 0.20 g NOB/(g NOB·day) respectively. The fraction of nitrifiers/total bacteria in the influent was 5.35% ± 2.1%, the dominant AOB was Nitrosomonas spp., Nitrosococcus mobilis hybridizated with Nsm156, and the dominant NOB was Nitrospira hybridizated with Ntspa662. The influent nitrifiers potentially seeded the activated sludge of the bioreactor and hence demonstrated a mitigation of the acclimatization times and instability during start-up and early operation. The AUR and NUR in the USBR was 15% and 13% higher than the SSBR respectively during the stable stage, FISH results showed that nitrifiers population especially the Nitrospira in the USBR was higher than that in the SSBR. These results indicate that the natural continuous immigration of nitrifiers from municipal influent streams may have some repercussions on the modeling and design of bioreactors. | Lifang Yu Ren Li Robert Delatolla Ru Zhang Xiuling Yang Dangcong Peng | 2018 | Journal of Environmental Sciences2018,30,12: | 7 |
| 8 | Speciation of organic phosphorus in a sediment profile of Lake Taihu I:Chemical forms and their transformation显示文摘Organic phosphorus(nonreactive P,NRP)is a major component of P in sediments,but information about its chemical forms and dynamic transformation is limited.The chemical forms and dynamic behaviors of NRP in a sediment profile from Lake Taihu,a freshwater and eutrophic lake in China,were investigated.Five forms of NRP in the sediments were extracted based on a chemical fractionation technique,including easily labile NRP(NaHCO3-NRP),reactive metal oxide-bound NRP(HCl-NRP),humic acid-associated NRP(NaOH-NRPHA),fulvic acid-associated NRP(NaOH-NRPFA)and residual NRP(Res-TP).There were notable transformations with increasing sediment depth from the labile NaHCO3-NRP and NaOH-NRP pools to the recalcitrant HCl-NRP and Res-TP pools,which caused the NRP to become increasingly recalcitrant as the early diagenetic processes proceeded.Further analyses showed that the relative changes in contents of organic matter and reactive Fe oxides in the sediment profile triggered a competition for binding NRP fractions and led to the transformation of NRP.The results highlighted the importance of abiotic processes in regulating the diagenesis of organic P and its stability in sediments. | Di Xu Shiming Ding Bin Li Xiuling Bai Chengxin Fan Chaosheng Zhang | 2013 | Journal of Environmental Sciences2013,25,4: | 7 |
| 9 | Designing near-natural planting patterns for plantation forests in China显示文摘Background: China has a long tradition of managing planted forests. Different species of Populus, Eucalyptus, Larix, Cunninghamia and Pinus are planted to satisfy the local demand for wood products and provide ecological services at the same time. Evidence of the greater resilience of natural forests provides the motivation to develop asymmetric planting patterns, which is the focus of this study. We present a new method for designing plantation patterns that follow those observed in natural ecosystems and to maintain some regularity for operational convenience. Methods: Based on the uniform angle index, we analyzed the spatial structure of six natural forests in different regions of China. The uniform angle index describes the degree of spatial uniformity of the n nearest neighbors of a given reference tree. Accordingly, we identified all possible patterns of a neighborhood group within a regular planting pattern and developed a method to optimize planting point arrangements that contain some randomness as well as a minimum degree of regularity. Results:(1) There are 13 types of structural units in a regular planting, including seven random units, five even units and one cluster unit;(2) Five near-natural arrangements are presented with a minimum proportion of 50% of random units. These five arrangements represent a combination of regularity for operational convenience and asymmetry. Conclusions: The new planting patterns developed in this study are expected to increase the asymmetric competition and resilience of these important ecosystems. Some experimental plantings, based on our findings, have already been established, e.g., in Pinus tabulaeformis plantations in Tianshui, Gansu Province, and in a Populus deltoides plantation in Fangshan near Beijing. | Gongqiao Zhang Gangying Hui Yanbo Hu Zhonghua Zhao Xiuling Guan Klaus von Gadow Ganggang Zhang | 2019 | Forest Ecosystems2019,6,3: | 6 |
| 10 | Mechanical regulation of bone remodeling显示文摘Bone remodeling is a lifelong process that gives rise to a mature, dynamic bone structure via a balance between bone formation by osteoblasts and resorption by osteoclasts. These opposite processes allow the accommodation of bones to dynamic mechanical forces, altering bone mass in response to changing conditions. Mechanical forces are indispensable for bone homeostasis;skeletal formation, resorption, and adaptation are dependent on mechanical signals, and loss of mechanical stimulation can therefore significantly weaken the bone structure, causing disuse osteoporosis and increasing the risk of fracture. The exact mechanisms by which the body senses and transduces mechanical forces to regulate bone remodeling have long been an active area of study among researchers and clinicians. Such research will lead to a deeper understanding of bone disorders and identify new strategies for skeletal rejuvenation. Here, we will discuss the mechanical properties, mechanosensitive cell populations, and mechanotransducive signaling pathways of the skeletal system. | Lijun Wang Xiuling You Lingli Zhang Changqing Zhang Weiguo Zou | 2022 | Bone Research2022,10,1: | 6 |
| 11 | Optimization of a new animal glue binder system cured by CO_2 for use in foundry显示文摘A new sand binder system cured by CO2 was prepared based on the animal bone glue.To overcome the disadvantages of animal glue such as agglomeration at room temperature,high energy consumption and low efficiency,an alkaline decomposition process was selected,and certain modifier was used to modify the performance of the animal glue binder.For the alkaline decomposition,NaOH was used as the catalyst with an addition of 4wt.% to the animal glue.A modifier was determined through the orthogonal experiment with a weight ratio of glycerin:glycol:dextrin:animal glue = 9:16:15:100,and the optimal modification reaction should be performed at 75 ℃ with a reaction time of 90 min.Ca(OH)2 was used as a promoter;the optimal CO2 gas flux blowing into the sand was 0.7 m3.h-1 for a duration of 60s under the experimental conditions.Results show that an original strength above 0.7 MPa and a final strength about 4.2 MPa can be achieved,which could meet the requirement of rapid moulding and core-making for foundry.The new binder was characterized and analyzed by means of IR,and the modification and CO2-cured mechanisms of this animal glue binder were also discussed. | Liu Weihua Zhang Yilin Li Yingmin Liu Xiuling | 2012 | China Foundry2012,9,4: | 5 |
| 12 | Introduction of antisense waxy gene into main parent lines of indica hybrid rice显示文摘Amylose content in rice endosperm is one of the key determinants of rice eating and cooking quality, and the poor quality of indica hybrid rice is closely related to the high amylose level in rice grains. In order to improve the grain quality of the indica hybrid rice by genetic engineering, an antisense fragment of rice waxy gene, driven by the 5’-franking sequences of the rice waxy gene, was successfully introduced into three major parent lines of indica hybrid rice, all contain a high amylose level in the grains, via Agrobacte-rium, and more than 100 hygromycin-resistant plants were regenerated. The analysis of PCR amplification and Southern blots indicated that the T-DNA containing the antisense waxy gene had been integrated into the genome of transgenic rice plants. Most of the primary transgenic rice plants grew normally, and the mature seeds from these transgenic plants were performed for analysis of the amylose content. The results showed that the amylose content in the endosperm of some grains | CHEN Xiuhua LIU Qiaoquan WANG Zongyang WANG Xingwen CAI Xiuling ZHANG Jingliu GU Minghong | 2002 | Chinese Science Bulletin2002,47,14: | 5 |
| 13 | A widely adaptable approach to generate integration-free iPSCs from non-invasively acquired human somatic cells显示文摘 | Zhichao Ding Lina Sui Ruotong Ren Yanjun Liu Xiuling Xu Lina Fu Ruijun Bai Tingting Yuan Ying Hao Weiqi Zhang Huize Pan Wensu Liu Han Yu Concepcion Rodriguez Esteban Xiaobing Yu Ze Yang Jian Li Xiaomin Wang Juan Carlos Izpisua Belmonte Guang-Hui Liu Fei Yi Jing Qu | 2015 | Protein & Cell2015,6,5: | 5 |
| 14 | Isolation and characterization of glacier VMY22, a novel lytic cold-active bacteriophage of Bacillus cereus显示文摘As a unique ecological system with low temperature and low nutrient levels, glaciers are considered a 'living fossil' for the research of evolution. In this work, a lytic cold-active bacteriophage designated VMY22 against Bacillus cereus MYB41-22 was isolated from Mingyong Glacier in China, and its characteristics were studied. Electron microscopy revealed that VMY22 has an icosahedral head(59.2 nm in length, 31.9 nm in width) and a tail(43.2 nm in length). Bacteriophage VMY22 was classified as a Podoviridae with an approximate genome size of 18 to 20 kb. A one-step growth curve revealed that the latent and the burst periods were 70 and 70 min, respectively, with an average burst size of 78 bacteriophage particles per infected cell. The pH and thermal stability of bacteriophage VMY22 were also investigated. The maximum stability of the bacteriophage was observed to be at pH 8.0 and it was comparatively stable at p H 5.0–9.0. As VMY22 is a cold-active bacteriophage with low production temperature, its characterization and the relationship between MYB41-22 and Bacillus cereus bacteriophage deserve further study. | Xiuling Ji Chunjing Zhang Yuan Fang Qi Zhang Lianbing Lin Bing Tang Yunlin Wei | 2015 | Virologica Sinica2015,30,1: | 5 |
| 15 | A Hierarchically Porous Metal-Organic Framework from Semirigid Ligand for Gas Adsorption显示文摘层次地多孔的材料在便于集体运输和吸附和分离过程的改善效率起一个重要作用。在这份报纸,新策略被建议认识到一个层次地多孔的金属器官的框架([Cu 2(OH)(L)]·(DMF)0.8(FJU-11, H 3L=3,5-(4-carboxybenzyloxy ) 安息香的酸, DMF=N, N-dimethylformamide ) 经由使用半硬的多羧基的酸。有趣地, FJU-11 向公司 2 拥有大吸附能力和小 isosteric 热。为 FJU-11 的列突破实验在烟道气体的分离加亮它的潜在的申请。 | Lizhen Liu Yingxiang Ye Zizhu Yao Liuqin Zhang Ziyin Li Lihua Wang Xiuling Ma Qian-Huo Chen Zhangjing Zhang Shengchang Xiang | 2016 | Chinese Journal of Chemistry2016,34,2: | 4 |
| 16 | Galectin-3-centered paracrine network mediates cardiac inflammation and fibrosis upon β-adrenergic insult显示文摘Rapid over-activation of β-adrenergic receptors (β-AR) following acute stress initiates cardiac inflammation and injury by activating interleukin-18 (IL-18),however,the process of inflammation cascades has not been fully illustrated.The present study aimed to determine the mechanisms of cardiac inflammatory amplification following acute sympathetic activation.With bioinformatics analysis,galectin-3 was identified as a potential key downstream effector of β-AR and IL-18 activation.The serum level of galectin-3 was positively correlated with norepinephrine or IL-18 in patients with chest pain.In the heart of mice treated with β-AR agonist isoproterenol (ISO,5 mg kg^(-1)),galectin-3 expression was upregulated markedly later than IL-18 activation,and Nlrp3^(-/-)and Il18^(-/-)mice did not show ISO-induced galectin-3 upregulation.It was further revealed that cardiomyocyte-derived IL-18 induced galectin-3 expression in macrophages following ISO treatment.Moreover,galectin-3deficiency suppressed ISO-induced cardiac inflammation and fibrosis without blocking ISO-induced IL-18 increase.Treatment with a galectin-3 inhibitor,but not a β-blocker,one day after ISO treatment effectively attenuated cardiac inflammation and injury.In conclusion,galectin-3 is upregulated to exaggerate cardiac inflammation and injury following acute β-AR activation,a galectin-3 inhibitor effectively blocks cardiac injury one day after β-AR insult. | Guomin Hu Jimin Wu Huijun Gu Xiangning Deng Wenli Xu Shan Feng Shuaixing Wang Yao Song Zhengda Pang Xiuling Deng Aleksandr E.Vendrov Nageswara R.Madamanchi Marschall S.Runge Xinyu Wang Youyi Zhang Han Xiao Erdan Dong | 2023 | Science China(Life Sciences)2023,66,5: | 3 |
| 17 | Speciation of organic phosphorus in a sediment profile of Lake Taihu Ⅱ.Molecular species and their depth attenuation显示文摘The understanding of organic phosphorus(P) dynamics in sediments requires information on their species at the molecular level,but such information in sediment profiles is scarce.A sediment profile was selected from a large eutrophic lake,Lake Taihu(China),and organic P species in the sediments were detected using solution phosphorus-31 nuclear magnetic resonance spectroscopy(31 P NMR) following extraction of the sediments with a mixture of 0.25 mol/L NaOH and 50 mmol/L EDTA(NaOH-EDTA) solution.The results showed that P in the NaOH-EDTA extracts was mainly composed of orthophosphate,orthophosphate monoesters,phospholipids,DNA,and pyrophosphate.Concentrations of the major organic P compound groups and pyrophosphate showed a decreasing trend with the increase of depth.Their half-life times varied from 3 to 27 years,following the order of orthophosphate monoesters > phospholipids DNA > pyrophosphate.Principal component analysis revealed that the detected organic P species had binding phases similar to those of humic acid-associated organic P(NaOH-NRP HA),a labile organic P pool that tends to transform to recalcitrant organic P pools as the early diagenetic processes proceed.This demonstrated that the depth attenuation of the organic P species could be partly attributed to their increasing immobilization by the sediment solids,while their degradation rates should be significantly lower than what were suggested in previous studies. | Shiming Ding Di Xu Xiuling Bai Shuchun Yao Chengxin Fan Chaosheng Zhang | 2013 | Journal of Environmental Sciences2013,25,5: | 3 |
| 18 | Visible-light-promoted sulfonylmethylation of imidazopyridines显示文摘The visible light promoted C-H sulfonylmethylation of imidazopyridines with easily accessible bromomethyl sulfones under mild reaction conditions was described.This protocol provides an effective and practical access to sulfonylmethylated imidazopyridines with good functional group tolerance.The desired products were provided in moderate to excellent yields for 50 examples at room temperature.The method could also be an attractive strategy to install a methyl group on imidazopyridines. | Xia Mi Yuanfang Kong Jingyu Zhang Chao Pi Xiuling Cui | 2019 | Chinese Chemical Letters2019,30,12: | 3 |
| 19 | Methane conversion under cold plasma over Pd-containing ionic liquids immobilized on γ-Al_2O_3显示文摘Pd-containing ionic liquid(IL) 1-hexyl-3-methylimidazolium tetrafluoroborate(C6MIMBF4) immobilized on 7-Al2O3(Pd-IL/γ-Al2O3) was prepared and characterized by Fourier transform infrared spectroscopy(FTIR),scanning electron microscopy(SEM) and Brunauer-Emmett-Teller (BET) analysis.The influences of C6MIMBF4 loading and Pd on methane conversion to C2 hydrocarbons under cold plasma were investigated.FTIR and SEM analyses indicated that C6MIMBF4 had been successfully immobilized on 7-Al2O3 and the C6MIMBF4 showed excellent stability under cold plasma.The results of BET and methane conversion showed that with the increase in immobilization amount of C6MIMBF4 ontoγ-Al2O3,the specific surface area and pore volume of IL/γ-Al2O3 decreased,while the selectivity and yield of C2 hydrocarbons increased.The selectivity of C2 hydrocarbons was 94.6%when the loading of C6MIMBF4 was 40%,and the percentage of C2H4 in C2 hydrocarbons was as high as 64%when using Pd-IL/γ-Al2O3 as a catalyst with no conventional thermal reduction treatment. Optical emission spectra(OES) from the cold plasma reactor during methane conversion were also studied.The results indicated that the intensity of the C2,CH,H,and C active species from methane and hydrogen decomposition increased when IL/γ-Al2O3 or Pd-IL/γ-Al2O3 was introduced into the plasma system.Based on the analyses of the gas product and OES spectra,it can be concluded that the surface catalyzed reactions between plasma and ionic liquid were very important for the reduction of Pd2+ and the formation of C2H4. | Xiuling Zhang Lanbo Di Qian Zhou | 2013 | Journal of Energy Chemistry2013,22,3: | 2 |
| 20 | Variation of the Vaginal Microbiome During and After Pregnancy in Chinese Women显示文摘A comprehensive profiling of the vaginal microbial communities and their variability enables an accurate description of the microbiome in women.However,there is a lack of studies available on Chinese women.In the present study,the composition of the vaginal microbiota during pregnancy and the 6-week postpartum period of 454 Chinese women was characterized by sequencing the V3-V4 region of the 16S ribosomal RNA(rRNA)gene.The vaginal microbiome showed variations during pregnancy and the postpartum period based on the abortion history,hypertensive disorders,delivery mode,and maternal age.Co-variation of 22 bacterial taxa,including the Lactobacillus genus and two of its species,may account for the common characteristics of the vaginal microbiome under scenarios of different medical histories and pregnancy outcomes.In contrast,discriminant bacterial species were significantly different between women who had preterm birth(PTB)with and without premature rupture of membranes(PROM),and the community state type(CST)IV-A without any predominant Lactobacillus species in the microbiota was more prevalent during pregnancy in the PROM-PTB cases,suggesting that specific bacterial species could be considered to distinguish between different types of PTB.By providing data on Chinese women,this study will enrich the knowledge of the human microbiome and contribute to a better understanding of the association between the vaginal microbiome and reproductive health. | Xiaoai Zhang Qingzhi Zhai Jinfeng Wang Xiuling Ma Bo Xing Hang Fan Zhiying Gao Fangqing Zhao Wei Liu | 2022 | Genomics, Proteomics & Bioinformatics2022,20,2: | 2 |