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Effect of iron ion co.figurations on Ni^(2+) removal in electroco.gulation

Journal of Environmental Sciences 2023年第2期124卷 823-834页

作者： Xiaoliu Lü Tao Xu Yihui Zhou Qingjuan Peng Jinhua Ou Bonian Hu Zhihui Xie Xiping Lei Gang Yu co.lege of Chemistry and Chemical Engineering Hunan UniversityChangsha 410082China Research Institute of New Building Materials Hunan Institute of TechnologyHengyang 421008China Chemical Synthesis and Pollution co.trol Key Laboratory of Sichuan Province College of Chemistry and Chemical EngineeringChina West Normal UniversityNanchong 637002China hunan zihong ecology technology co. Ltd.Changsha 410000China

Electroco.gulation(EC)has been widely used to treat the heavymetal wastewater in industry.A novel process of sinusoidal alternating current electroco.gulation(SACC)is adopted to remove Ni2+in wastewater in this *** morphology of precipitates and the distribution of the main functional iron co.figurations were *** timed co.plex spectrosco.y can identify the monomeric iron co.figurations[Fe(a)],oligomeric iron co.figurations[Fe(b)]and polymeric iron co.figurations[Fe(c)].The optimal operating co.ditions of SACC process were determined through single-factor *** maximum Ni2+removal efficiency[Re(Ni^(2+))]was achieved under the co.ditions of pH0=7,current density(j)=7 A/m^(2),electrolysis time(t)=25 min,c0(Ni^(2+))=100 mg/*** pH=7,the proportion of Fe(b)and Fe(c)in the system was 50.4 at.% and 23.1 at.%,*** the SACC process,Fe(b)and Fe(c)are themain iron co.figurations in solution,while Fe(c)are the vastmajority of the iron co.figurations in the direct current electroco.gulation(DCC)***(Ni2+)is 99.56% for SACC and 98.75% for DCC under the same optimum co.ditions,*** precipitates produced by SACC have a high proportion of Fe(b)co.figurations with sphericalα-FeOOH andγ-FeOOH structures which co.tain abundant hydroxyl ***,it is demonstrated that Fe(b)has better adsorption capacity than Fe(c)through adsorption experiments of methyl orange(MO)***(a)co.figurations in the homogeneous solution had no effect on the removal of nickel.

关键词： Electroco.gulation Nickel wastewater Iron co.figurations Alternating current Polynuclear iron-hydroxyl co.plex

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Shortened Basal Internodes Enco.es a Gibberellin 2-Oxidase and co.tributes to Lodging Resistance in Rice

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Molecular Plant 2018年第2期11卷 288-299页

作者： Chang Liu Jinshan Gui Chenjian Fu Hasi Yu Dongliang Song Junhui Shen Peng Qin Xuanming Liu Bin Han Yuanzhu Yang Laigeng Li National Key Laboratory of Plant Molecular Genetics and CAS Center for Excellence in Molecular Plant Sciences Shanghai Institute of Plant Physiology and Ecology Chinese Academy of Sciences Shanghai 200032 China Yuan Longping Agriculture High-Tech co. Ltd. Hunan 410001 China hunan University Hunan 410082 China University of the Chinese Academy of Sciences Beijing 100049 China National Center of Plant Gene Research and CAS Center for Excellence in Molecular Plant Sciences Institute of Plant Physiology and EcologyChinese Academy of Sciences Shanghai 200233 China hunan Ava Seed Research Institute Hunan 410119 China hunan Engineering Laboratory for Disease and Insect-Resistant Rice Breeding Hunan 410119 China

Breeding semi-dwarf varieties to improve lodging resistance has been proven to be enormously successful in increasing grain yield since the advent of the ＂green revolution.＂ However, the breeding of the majority of semi-dwarf rice varieties in Asia has been dependent mainly on genetic introduction of the mutant alleles of SD1, which enco.es a gibberellin （GA） 20-oxidase, OsGA20ox2, for catalyzing GA biosynthesis. Here, we report a new rice lodging-resistance gene, Shortened Basal lnternodes （SBI）, which enco.es a gibberellin 2- oxidase and specifically co.trols the elongation of culm basal internodes through deactivating GA activity. SBI is predominantly expressed in culm basal internodes. Genetic analyses indicate that SBI is a semidominant gene affecting rice height and lodging resistance. SBI allelic variants display different activities and are associated with the height of rice varieties. Breeding with higher activity of the SBI allele generates new rice varieties with improved lodging resistance and increased yield. The disco.ery of the SB! provides a desirable gene resource for producing semi-dwarf rice phenotypes and offers an effective strategy for breeding rice varieties with enhanced lodging resistance and high yield.

关键词： Shortened Basal Internodes gibberellin activity lodging resistance yield rice

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Efficient removal of tetracycline hydrochloride through novel Fe/BiOBr/Bi_(2)WO_(6) photocatalyst prepared by dual-strategy under visible-light irradiation

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Journal of Environmental Sciences 2024年第4期138卷 46-61页

作者： Guanlong Yu Kai Yang Yi Yang Yifu Li Qifang Sun Peiyuan Li Wenming Wang Fengming Song Tao Ling Xuejun Peng Zhi Yu Shiquan Sun School of Hydraulic and Environmental Engineering Changsha University of Science&TechnologyChangsha 410114China Key Laboratory of Dongting Lake Aquatic Eco.Environmental co.trol and Restoration of hunan Province Changsha 410114China hunan Pilot Yanghu Reclaimed Water co. Ltd.Changsha 410208China China Railway Wuju Group the First Engineering co. Ltd.Changsha 410117China

It is important to investigate whether co.bining two modification strategies has a synergistic effect on the activity of *** this manuscript,Fe-doped BiOBr/Bi_(2)WO_(6) heterojunctions were synthesized by a one-pot solvothermal method,and excellent photocatalytic performance was obtained for the degradation of tetracycline hydrochloride(TCH)in water without the addition of *** experiments and characterization,the synergistic effect between Fe ion doping and the BiOBr/Bi_(2)WO_(6) heterojunction was *** Fe/BiOBr/Bi_(2)WO_(6) co.posite photocatalyst had a beneficial void structure,enhanced visible light response,and co.ld inhibit the reco.bination of photogenerated support well,which improved the photocatalytic *** presented experiments demonstrate that Fe/BiOBr/Bi_(2)WO_(6) removes 97% of TCH from aqueous solution,while pure BiOBr and Bi_(2)WO_(6) only remove 56% and 65% of TCH,***,the separation and transfer mechanisms of photoexcited carriers were determined in co.junction with the experimental *** study provides a new direction for the design of efficient photocatalysts through the use of a dual co.modification strategy.

关键词： BiOBr/Bi_(2)WO_(6) Fe-doping Dual strategy Tetracycline hydrochloride Photodegradation

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Dietary butyrate,lauric acid and stearic acid improve gut morphology and epithelial cell turnover in weaned piglets

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Animal Nutrition 2022年第4期11卷 276-282页

作者： Xianglin Zeng Yuan Yang Junmin Wang Zhaobin Wang Jun Li Yulong Yin Huansheng Yang hunan International Joint Laboratory of Animal Intestinal ecology and Health Animal Nutrition and Human Health LaboratorySchool of Life SciencesHunan Normal UniversityChangshaHunan 410081China hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process Key Laboratory of Agro-ecological Processes in Subtropical RegionHunan Provincial Engineering Research Center of Healthy LivestockScientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-CentralMinistry of AgricultureInstitute of Subtropical AgricultureChinese Academy of SciencesChangshaHunan 410125China State Key Laboratory of Food Safety technology for Meat Products Yinxiang GroupFujian Aonong Biological Science and Technology Group Co.Ltd.Key Laboratory of Swine Nutrition and Feed Science of Fujian ProvinceAonong GroupZhangzhouFujian 363000China co.lege of Pharmacy Changsha Medical UniversityChangshaHunan410219China

This study was to evaluate the effects of the supplementation of saturated fatty acids with different chain lengths on growth performance,intestinal morphology,epithelial cell proliferation,differentiation and apoptosis in weaned ***-two weaned piglets(Duroc×Landrace×Yorkshire,BW=7.81±0.26 kg)were weaned at 21 d and randomly assigned to 1 of 4 experimental treatments:(1)a basal diet(co.trol);(2)co.trol+0.3% butyrate(BT);(3)co.trol+0.3%lauric acid(LA);(4)co.trol+0.3% stearic acid(SA).All piglets were then slaughtered for tissue sampling after having been fed experimental diets for 28 d after *** of BT increased the gain-to-feed ratio(G:F)(Pco.pared to piglets fed the co.trol diet from 14 to 28 *** addition,the villus height(VH)to crypt depth(CD)ratio(VH:CD ratio)of the ileum were higher in the BT and LA diets than that of the co.trol diet(Pco.pared to the co.trol,diets supplemented with BT,LA,or SA all tended to increase jejunal proliferation(Ki67/crypt positive cells)(P=0.190);diets supplemented with BT or SA significantly increased the number of ki67-positive cells in the ileal crypt(Pco.pared to those on the co.trol diet(Pco.pared with the co.trol diet,the BT diet tended to increase the protein level of mammalian phosphorylation target of rapamycin(p-m TOR,P<0.10);LA or SA diets significantly increased p-m TOR protein expression(P<0.05).These results show that dietary supplementation of BT,LA,or SA promotes jejunal cell renewal in weaned *** the same time,increased proliferation of ileal crypt cells by promoting p-m TOR expression has beneficial effects on ileal morphology in weaned piglets.

关键词： Weaned piglet Saturated fatty acid Growth performance Intestinal morphology Proliferation

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Changes in progenitors and differentiated epithelial cells of neonatal piglets

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Animal Nutrition 2022年第1期8卷 265-276页

作者： Lanmei Yin Jun Li Yitong Zhang Qing Yang Cuiyan Yang Zhenfeng Yi Yuebang Yin Qiye Wang Jianzhong Li Nengshui Ding Zhigang Zhang Huansheng Yang Yulong Yin hunan International Joint Laboratory of Animal Intestinal ecology and Health Laboratory of Animal Nutrition and Human HealthCollege of Life SciencesHunan Normal UniversityChangshaHunan410081China hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-CentralMinistry of AgricultureHunan Provincial Engineering Research Center for Healthy Livestock and Poultry ProductionKey Laboratory of Agro-ecological Processes in Subtropical RegionInstitute of Subtropical AgricultureChinese Academy of SciencesChangshaHunan410125China National Center of technology Innovation for Synthetic Biology Tianjin Institute of Industrial BiotechnologyChinese Academy of SciencesTianjin300308China State Key Laboratory of Food Safety technology for Meat Products Yinxiang GroupFujian Aonong BiologicaI Science and Technology Group Co.Ltd.Key Laboratory of Swine Nutrition and Feed Science of Fujian ProvinceAonong GroupZhangzhouFujian363000China

This study aimed to assess the changes of small intestinal morphology,progenitors,differentiated epithelial cells,and potential mechanisms in neonatal *** and eosin staining of samples from 36 piglets suggested that dramatic changes were observed in the jejunum crypts depth and crypt fission index of neonatal piglets(Pco.taining G protein-co.pled receptor 5[Lgr5],Smoc2;Pco.nexin 43[Cnx43];P<0.05).The mRNA expression of relevant genes was up-regulated,and involved in Wnt/b-catenin,epidermal growth factor(EGF),Notch,and bone morphogenetic protein(BMP)signaling on d 7 organoids(P<0.05).Spheroids displayed low differentiated phenotype and high proliferation,while organoids exhibite

关键词： Fetal type of progenitor Adult intestinal stem cell Differentiated epithelial cell Neonatal piglet

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Biological Cycles of Mineral Elements in a Young Mixed Stand in Abandoned Mining Soils

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Journal of Integrative Plant Biology 2007年第9期49卷 1284-1293页

作者： Da-Lun Tian Wen-Hua Xiang Wen-De Yan Wen-Xing Kang Xiang-Wen Deng Zhu Fan Research Section of ecology Central-South University of Forestry & Technology Changsha 410004 China

Phytoremediation as a sustainable and inexpensive technology based on the removal of pollutants from the environment by plants is beco.ing an increasingly important objective in plant research. In this study, biological cycles of five nutrient elements （N, P, K, Ca, and Mg） and eight heavy metal elements （Fe, Cu, Zn, Mn, Cd, Ni, Pb and co. were examined in young paniculed goldraintree （Koelreuteria paniculata Laxm） and co.mon elaeocarpus （Elaeocarpus decipens） mixed stands in an abandoned mining area. We found that after vegetation restoration in abandoned mining areas, the organic matter and co.centrations of nutrient elements were significantly increased and the heavy metal elements were significantly decreased, the annual retention, uptake and return were 75.0, 115.4, and 40.3 kg/hm^2 for nutrient elements, and 1 878.0, 3 231.0 and 1 353.0 g/hm^2 for heavy metal elements, respectively, with the utilization co.fficient, cycling co.fficient and turnover rate of 0.92, 0.35 and 0.32 for nutrient elements, and 1.24, 0.42 and 1.92 for heavy metal elements, respectively. Our results suggested that the vegetation restoration in abandoned mining areas had significant effects in improving environmental co.ditions, enhancing soil available nutrients, and ensuring human health.

关键词： abandoned mining areas biological cycle co.mon elaeocarpus (Elaeocarpus decipens) heavy metal elements mixed stand paniculed goldraintree (Koelreuteria paniculata).

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Influence of Thinning on Soil co.2 Efflux in Chinese Fir Plantations

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Pedosphere 2009年第3期19卷 273-280页

作者： WANG Guang-Jun Forest ecology Section Faculty of Life Sciences and Technology Central South University of Forestry and TechnologyChangsha 410006 （China）

Forest management is expected to influence soil co. effiux （Fco.） as a result of changes in microenvironmental co.ditions, soil microclimate, and root dynamics. Soil EGO2 rate was measured during the growing season of 2006 in both thinning and non-thinning locations within stands ranging from 0 to 8 years after the most recent thinning in Chinese fir （Cunninghamia lanceolata （Lamb.） Hook） plantations in Huitong Eco.ystem Research Station, hunan, China. Soil temperature and moisture were also measured to examine relationships between Fco. and soil properties. Forest thinning resulted in huge changes in Fco. that varied with time since cutting. Immediately following harvest （year 0） Fco. in thinning area increased by about 30%, declined to 20%-27% below pre-cutting levels during years 4-6, and reco.ered to pre-cutting levels at 8 years post-cutting. A similar temporal pattern, but with smaller changes, was found in non-thinning locations. The initial increase in Fco. co.ld be attributed to a co.bination of root decay, soil disturbance, and increased soil temperature in gaps, while the subsequent decrease and reco.ery to the death and gradual regrowth of active roots. Strong effects of soil temperature and soil water co.tent on Fco. were found. Forest thinning mainly influenced Fco. through changes in tree root respiration, and the net result was a decrease in integrated Fco. flux through the entire felling cycle.

关键词： forest soil moisture soil properties soil respiration soil temperature

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co.parison of the meat quality and fatty acid profile of muscles in finishing Xiangcun Black pigs fed varied dietary energy levels

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Animal Nutrition 2022年第4期11卷 15-24页

作者： Can Yang Wenlong Wang Xiaowu Tang Ruilin Huang Fengna Li Wenxuan Su Yulong Yin Chaoyue Wen Jian Liu co.lege of Life Sciences and Environment Hunan Provincial Key Laboratory of Biological Resources Protection and Utilization in Nanyue Mountain AreaHengyang Normal UniversityHengyangHunan 421008China Key Laboratory of Agro-eco.ogical Processes in Subtropical Region National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry ProductionInstitute of Subtropical AgricultureChinese Academy of ScienceChangsh1Hunan 410125China hunan International Joint Laboratory of Animal Intestinal ecology and Health Hunan Normal UniversityChangshaHunan 410081China co.lege of Bioengineering Hunan Vocational Technical College of Environment and BiologyHengyangHunan 421005China Key Laboratory of Animal Feed and Nutrition of Zhejiang Province College of Animal SciencesZhejiang UniversityHangzhou 310058China Xiangcun High-technology Agricultural co.LTD LoudiHunan 417000China

To study the effects of dietary energy level on the meat quality of different muscles in finishing pigs,400Xiangcun Black pigs(BW=79.55±4.77 kg)were randomly assigned to 5 treatments with varied calculated digestive energy(DE)at 3,050,3,100,3,150,3,200 and 3,250 kcal/kg,*** treatment had 8replicates with 10 pigs per *** quality,amino acid and fatty acid co.position were tested in this *** differences in average daily gain,average daily feed intake or feed-to-gain ratio(P>0.05)were observed among dietary *** co.centrations of longissimus dorsi(LD)muscle in DE3150was higher than those in other groups(Pco.centration of biceps femoris(BF)muscle in DE3250 tended to be higher than that in DE3150 and DE3100 groups(Pco.centration in LD muscle co.pared with those in DE3200,DE3250(Pco.clusion,a200 kcal/kg decrease in digestible energy for 4 co.secutive weeks did not affect growth performance of Xiangcun Black ***,LD and BF muscle respond differently to dietary energy level,and meat quality was improved by the medium energy level during the finishing phase.

关键词： Energy Growth performance Fatty acid Myofibrillar morphology Muscle

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Dietary high protein-induced diarrhea and intestinal inflammation by activation of NF-kB signaling in piglets

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Animal Nutrition 2021年第4期7卷 1070-1077页

作者： Lanmei Yin Jun Li Meiwei Wang Qiye Wang Jianzhong Li Nengshui Ding Huansheng Yang Yulong Yin hunan International Joint Laboratory of Animal Intestinal ecology and Health Laboratory of Animal Nutrition and Human HealthCollege of Life SciencesHunan Normal UniversityChangsha 410081China hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-CentralMinistry of AgricultureHunan Provincial Engineering Research Center for Healthy Livestock and Poultry ProductionKey Laboratory of Agro-ecological Processes in Subtropical RegionInstitute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125China State Key Laboratory of Food Safety technology for Meat Products Yinxiang GroupFujian Aonong Biological Science and Technology Group Co.Ltd.Key Laboratory of Swine Nutrition and Feed Science of Fujian ProvinceZhangzhou 363000China

The present study aimed to investigate whether inflammation-associated responses in piglets are induced by high protein(HP)through activating nuclear factor kappa B(NF-κB)*** piglets(35 d of age,Duroc×[Landrace×Yorkshire],weaned at d 21,initial BW=9.70±0.11 kg)were allocated to 18%and 26%CP(HP group)at random,co.prising 8 replicate pens per *** piglets were slaughtered to co.lect intestinal tissues when apparent,persistent,and stable diarrhea syndromes happened(on d 12).No significant differences were observed in their growth performance(P>0.05),but reduction by 19.11%,25.31%,23.64%of ADFI,ADG,and G:F,respectively was detected in the HP *** HP group had greater(P=0.002)diarrhea ***,dietary HP had lower ileal villus height(VH;P=0.048),ratio of villus height to crypt depth(VH/CD ratio;P=0.016),and co.onic CD(P=0.034),as well as had the trend(P=0.075)to reduce the ileal villus absorptive ***,HP diets significantly elevated the goblet cell numbers in the ileal villi(P=0.016)and co.onic crypts(Pco.centration in the ileum(P=0.002)and co.on(P=0.007)of *** HP significantly down-regulated the mRNA expression of tumor necrosis factor-α(TNF-α;Pco.on,and inclined to down-regulate interleukin-1β(IL-1β;P=0.076)expression in the *** relative protein abundance of Galectin-3(P=0.046)in the co.on and the ratio of phosphorylation NF-κB to NF-κB(p-NF=κB/NF-κB ratio)in the ileum of HP piglets were also greater(P=0.038).These results suggest that dietary HP may cause diarrhea in piglets by activating NF-icB signaling induced intestinal inflammation.

关键词： High protein Diarrhea Intestinal inflammation Piglet NF-kB signaling

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Effects of redox potential on soil cadmium solubility:Insight into microbial co.munity

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Journal of Environmental Sciences 2019年第1期31卷 224-232页

作者： Delong Meng Juan Li Tianbo Liu Yongjun Liu Mingli Yan Jin Hu Xiaoqi Li Xueduan Liu Yili Liang Hongwei Liu Huaqun Yin School of Minerals Processing and Bioengineering Central South University Key laboratory of Biometallurgy Ministry of Education co.lege of Agronomy Hunan Agricultural University co.lege of Plant protection Hunan Agricultural University School of Life Science Hunan University of Science and Technology

Understanding the role of microbes in the solubility of cadmium(Cd) is of fundamental importance for remediation of Cd toxicity. The present study aimed to identify the microbes that involved in regulating Cd solubility and to reveal possible mechanisms. Therefore,microbial co.munities were investigated through high-throughput sequencing approach, the molecular eco.ogical network was co.structed and metagenomes were predicted. Our results indicated that redox co.ditions affected both the solubility of soil Cd and the microbial co.munities. Anaerobic microbes, such as Anaerolineaceae, did not only play important roles in shaping the microbial co.munity in soils, but might also be involved in regulating the Cd solubility. Two possible mechanisms that how Anaerolineaceae involved in Cd solubility are(1) Anaerolineaceae are important organic matter degraders under anoxic co.ditions and(2) Anaerolineaceae can co.exist with methane metabolism microbes, while methane metabolism promotes the precipitation of soluble Cd. Thus, application of Anaerolineaceae in bioremediation of soil Cadmium co.tamination is a potential approach. The study provided a novel insight into the role of microbial co.munity in the regulation of Cd solubility under different redox co.ditions, and suggested a potential approach for the remediation of soil Cd co.tamination.

关键词： Cd solubility Redox potential Microbial co.munity Molecular ecology networks (MENs) Anaerolineaceae

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