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Promotion effects of salt-alkali on ammonia volatilization in a coastal soil

Pedosphere 2024年第1期34卷 191-199页

作者： Zhenqi SHI Dongli she Yongchun PAn Yongqiu XIA College of Agricultural Science and Engineering Hohai UniversityNanjing 210098China Jiangsu Province Engineering Research Center for Agricultural Soil-Water Efficient Utilization Carbon Sequestration and Emission ReductionNanjing 210098China key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China

Coastal ecosystems are highly susceptible to salt-related problems due to their formation process and geographical location. As such ecosystems are the most accessible land resources on Earth, clarifying and quantifying the effects of salt-alkali conditions on n concentration and ammonia(nH_(3)) volatilization are pivotal for promoting coastal agricultural productivity. The challenge in establishing this effect is to determine how salt-alkali conditions impact nH_(3) volatilization through direct or indirect interactions. An incubation experiment using a coastal soil from a paddy farmland, combined with the structural equation modeling(SEM) method, was conducted to reveal the net effects of salt-alkali on nH_(3) volatilization and the role of environmental and microbial factors in mutual interaction networks. The specific experimental design consisted of four salt treatments(S1, S2, S3, and S4: 1‰, 3‰, 8‰, and 15‰ naCl by mass of soil, respectively), four alkaline treatments(A1, A2, A3, and A4: 0.5‰, 1‰, 3‰, and 8‰ naHCO_(3)by mass of soil, respectively) and a control without naCl or naHCO_(3) addition(Ck), and each treatment had three urea concentrations(n1, n2, and n3: 0.05, 0.10, and 0.15 g n kg^(-1) soil,respectively) and three replicates. At the n1, n2, and n3 levels, nH_(3)volatilization increased by 9.31%–34.98%, 3.07%–26.92%, and 2.99%–43.61% as the naCl concentration increased from 1‰ to 15‰, respectively, compared with Ck. With an increase in the naHCO_(3)concentration from 0.5‰ to 8‰, nH_(3) volatilization increased by 8.36%–56.46%, 5.49%–30.10%, and 30.72%–73.18% at the n1, n2, and n3 levels, respectively, compared with Ck. According to the SEM method, salinity and alkalinity had positive direct effects on nH_(3)volatilization, with standardized path coefficients of 0.40 and 0.19, *** the total effects(net positive and negative effects) in the SEM results, alkalinity had a greater influence than salinity(total standardized coefficien

关键词： alkalinity coastal ecosystem nH_(3)emission n-transforming microbe salinity structural equation modeling

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Evolution of inclusions in vacuum induction melting of superalloys containing 70%return material

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Journal of Iron and Steel Research International 2024年第3期31卷 719-728页

作者： Jin-guo Gao Shu-lei Yang Shu-feng Yang Jing-she Li Wei Liu Meng-jing Zhao An-ren Wang School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China State key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China Metallurgical and Building Materials Business Department China International Engineering Consulting CorporationBeijing 100048China

The variation law of inclusions type and size in the vacuum induction melting process and ingot of ni-based superalloy containing 70%return material was studied by industrial test sampling,and the mechanism of inclusions formation was analyzed with thermodynamic *** results show that there are mainly two types of composite inclusions in the vacuum induction melting of ni-based superalloys,which are nitride-and oxide-based composite inclusions,like Al_(2)O_(3)-SiO_(2)-Cr_(2)O_(3),Tin-(Mo,nb)C,*** type and proportion of inclusions from the center to the edge of the vacuum induction ingot did not change *** number density of inclusions from the center to the edge of the ingot varied less,and the size of inclusions became smaller from the center to the *** addition,thermodynamic calculations show that oxides(M_(2)O_(3))are present in the liquid phase and mainly contain Al,Ti,Cr,Fe and O *** nitride consists mainly of Ti and n and contains small amounts of Cr,C,nb,and Mo *** is consistent with the results of industrial *** the temperature decreases,the precipitation phases such as M_(2)O_(3),Mn,γ,MC,δ,γ'andμphases are gradually precipitated,where oxides and nitrides are present in the liquid *** contents of O and n elements are the main influencing factors for the inclusions content and precipitation temperature;when the nitrogen content is reduced to below 0.0015%,it can make Mn precipitate below the liquid-phase line.

关键词： ni-based superalloy Vacuum induction melting Return material Inclusion Thermodynamic

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Synthetic strategy of biomimetic sea urchin-like Co-nC@PAnI modified MXene-based magnetic aerogels with enhanced electromagnetic wave absorption properties

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nano Research 2024年第3期17卷 2025-2037页

作者： Meng Yu Ying Huang Xudong Liu kaihang she Xiaoxiao Zhao Wanqing Fan Xiaofang Ma Junhui Zou Tiehu Li MOE key Laboratory of Material Physics and Chemistry Under Extraordinary Conditions School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710129China nPU-nCP Joint International Research Center on Advanced nanomaterials&Defects Engineering State Key Laboratory of Solidification ProcessingShaanxi Engineering Laboratory for Graphene New Carbon Materials and ApplicationsSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China

The rational and effective combination of multicomponent materials and ingenious microstructure design for efficient electromagnetic wave(EMW)absorption are still *** this paper,MXene was used as the aerogel matrix,modified with sea urchin-like magnetic Co/n-doped carbon@polyaniline(Co-nC@PAnI),gelatin was introduced as the reinforcement phase of the aerogel backbone,and a microwave absorber with high efficiency and excellent performance was successfully *** sea urchin-like Co-nC@PAnI not only adjusted the impedance matching of the MXene but also introduced a magnetic loss mode into the *** multicomponent interfacial polarization,heterostructure,three-dimensional(3D)lightweight porous structure,and electromagnetic synergy strategy enabled the MXene-based aerogel modified by Co-nC@PAnI(MCoP)to exhibit surprising EMW absorption *** maximum reflection loss(RL_(max))of the aerogel composite reached-62.4 dB,and the effective absorption bandwidth(EAB)reached 6.56 GHz when the loading was only 12%.In addition,through electromagnetic simulation experiments,the change in the electromagnetic field before and after EMW passed through the materials and the distribution of the volume loss density of EMW by the coaxial ring were *** coordinated electromagnetic balance strategy in the 3D network provides inspiration for the construction of materials and expands the research direction of lightweight and outstanding microwave absorbers.

关键词： MXene sea urchin-like Co/n-doped carbon@polyaniline(Co-nC@PAnI) aerogel electromagnetic synergy strategy electromagnetic wave absorption

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Rational design of unrestricted pRn1 derivatives and their application in the construction of a dual plasmid vector system for Saccharolobus islandicus

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mLife 2024年第1期3卷 119-128页

作者： Pengpeng Zhao Xiaonan Bi Xiaoning Wang Xu Feng Yulong shen Guanhua Yuan Qunxin she CRISPR and Archaea Biology Research Center State Key Laboratory of Microbial Technology and Microbial Technology InstituteShandong UniversityQingdaoChina

Saccharolobus islandicus REY15A represents one of the very few archaeal models with versatile genetic tools,which include efficient genome editing,gene silencing,and robust protein expression ***,plasmid vectors constructed for this crenarchaeon thus far are based solely on the pRn2 cryptic *** this plasmid coexists with pRn1 in its original host,early attempts to test pRn1-based vectors consistently failed to yield any stable host-vector system for *** hypothesized that this failure could be due to the occurrence of CRISPR immunity against pRn1 in this *** identified a putative target sequence in orf904 encoding a putative replicase on pRn1(target n1).Mutated targets(n1a,n1b,and n1c)were then designed and tested for their capability to escape the host CRISPR immunity by using a plasmid inter-ference *** results revealed that the original target triggered CRISPR immunity in this archaeon,whereas all three mutated targets did not,indicating that all the designed target mutations evaded host *** mutated targets were then incorporated into orf904 individually,yielding corresponding mutated pRn1 backbones with which shuttle plasmids were constructed(pn1aSD,pn1bSD,and pn1cSD).*** transformation revealed that pn1aSD and pn1bSD were functional shuttle vectors,but pn1cSD lost the capability for *** results indicate that the missense mutations in the conserved helicase domain in pn1c inactivated the *** further showed that pRn1-based and pRn2-based vectors were stably maintained in the archaeal cells either alone or in combination,and this yielded a dual plasmid system for genetic study with this important archaeal model.

关键词： archaeal genetics CRISPR-Cas CRISPR escape mutations dual plasmid vectors Saccharolobus-E.coli shuttle vectors

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Clinical risk factors for preterm birth and evaluating maternal psychology in the postpartum period

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World Journal of Psychiatry 2024年第5期14卷 661-669页

作者： Jia-Jun Chen Xue-Jin Chen Qiu-Min she Jie-Xi Li Qiu-Hong Luo Department of Clinical Laboratory Shenzhen Bao’an District Songgang People’s HospitalShenzhen 518000Guangdong ProvinceChina Department of Otolaryngology Head and neck Surgery Outpatient Shenzhen Children’s HospitalShenzhen 518000Guangdong ProvinceChina Department of Prevention and Health Care Shenzhen Bao’an District Songgang People’s HospitalShenzhen 518000Guangdong ProvinceChina Department of Obstetrics Shenzhen Bao’an District Songgang People’s HospitalShenzhen 518000Guangdong ProvinceChina

BACkGROUnD Although the specific pathogenesis of preterm birth(PTB)has not been thoroughly clarified,it is known to be related to various factors,such as pregnancy complications,maternal socioeconomic factors,lifestyle habits,reproductive history,environmental and psychological factors,prenatal care,and nutritional *** has serious implications for newborns and families and is associated with high mortality and ***,the prediction of PTB risk can facilitate early intervention and reduce its resultant adverse *** To analyze the risk factors for PTB to establish a PTB risk prediction model and to assess postpartum anxiety and depression in *** A retrospective analysis of 648 consecutive parturients who delivered at shenzhen Bao’an District Songgang People’s Hospital between January 2019 and January 2022 was *** to the diagnostic criteria for premature infants,the parturients were divided into a PTB group(n=60)and a full-term(FT)group(n=588).Puerperae were assessed by the Self-rating Anxiety Scale(SAS)and Self rating Depression Scale(SDS),based on which the mothers with anxiety and depression symptoms were screened for further *** factors affecting PTB were analyzed by univariate analysis,and the related risk factors were identified by logistic *** According to univariate analysis,the PTB group was older than the FT group,with a smaller weight change and greater proportions of women who underwent artificial insemination and had gestational diabetes mellitus(Pn addition,greater proportions of women with reproductive tract infections and greater white blood cell(WBC)counts(Pngths in the second trimester and lower neutrophil percentages(Pn the PTB group than in the FT *** PTB group exhibited higher postpartum SAS and SDS scores than did the FT group(Pnumber of mothers experiencing anxiety and depress

关键词： Preterm birth Risk factors Postpartum psychological state Risk model Prediction

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Indications of pro-inflammatory cytok.nes in laparoscopic and open liver resection for early-stage hepatocellular carcinoma

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Hepatobiliary & Pancreatic Diseases International 2024年第3期23卷 257-264页

作者： kevin Tak-Pan ng Li Pang Jia-Qi Wang Wong Hoi she Simon Hing-Yin Tsang Chung Mau Lo kwan Man Tan To Cheung Department of Surgery HKU-SZH&School of Clinical MedicineLi Ka Shing Faculty of MedicineThe University of Hong KongHong KongChina State key Laboratory of Liver Research The University of Hong KongHong KongChina

Background:Our clinical practice of laparoscopic liver resection(LLR)had achieved better short-term and long-term benefits for patients with hepatocellular carcinoma(HCC)over open liver resection(OLR),but the underlying mechanisms are not *** study was to find out whether systemic inflammation plays an important ***:A total of 103 patients with early-stage HCC under liver resection were enrolled(LLR group,n=53;OLR group,n=50).The expression of 9 inflammatory cytok.nes in patients at preoperation,postoperative day 1(POD1)and POD7 was quantified by Luminex Multiplex *** relationships of the cytok.nes and the postoperative outcomes were compared between LLR and ***:Seven of the circulating cytok.nes were found to be significantly upregulated on POD1 after LLR or OLR compared to their preoperative *** to OLR,the POD1 levels of granulocytemacrophage colony-stimulating factor(GM-CSF),interleuk.n-6(IL-6),IL-8,and monocyte chemoattractant protein-1(MCP-1)in the LLR group were significantly *** POD1 levels of these cytok.nes were significantly correlated with longer operative time and higher volume of blood loss during *** levels of these cytok.nes were positively associated with postoperative liver injury,and the length of hospital ***,a high level of IL-6 at POD1 was a risk factor for HCC recurrence and poor disease-free survival after liver ***:Significantly lower level of GM-CSF,IL-6,IL-8,and MCP-1 after liver resection represented a milder systemic inflammation which might be an important mechanism to offer better short-term and long-term outcomes in LLR over OLR.

关键词： Laparoscopic liver resection Open liver resection Hepatocellular carcinoma Postoperative cytok.nes Inflammatory responses

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Clinical heterogeneity and five phenotypes identified in pediatric Behçet’s syndrome: a cohort study from Shanghai Behçet’s syndrome database

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World Journal of Pediatrics 2024年第8期20卷 801-808页

作者： Dan Hu Chun-Hui she Hua-Fang Bao Jun Zou Jian-Fei Cai Jing‑Fen Ye Yan shen Hai‑Fen Ma Dan Luo Jian-Long Guan Department of Rheumatology and Immunology Huadong Hospital Affiliated to Fudan University221 Yan’an West Road200040ShanghaiChina

Objectives Behçet’s syndrome(BS)is a rare disease of unknown etiology,with limited reports especially in pediatric *** clinical characteristics and phenotypes of pediatric BS as a highly heterogeneous variable vessel vasculitis were investigated in this *** A cross-sectional study was conducted to compare clinical variables and descriptive characteristics of BS by age of onset and *** analysis was then performed to identify the phenotypes of pediatric *** A total of 2082 BS patients were included in this study,1834 adults and 248 *** with adult-onset BS,pediatric BS had a higher incidence of folliculitis[relative risks(RR)and 95%confidence interval(CI)1.3(1.0–1.5)],uveitis of the left eye[RR and 95%CI 2.3(1.0–5.0)],intestinal ulcer complications[RR and 95%CI 2.1(1.1–4.2)],pericarditis[RR and 95%CI 2.5(1.0–6.2)],and psychiatric disorders[RR and 95%CI 2.8(1.0–7.9)],while the incidence of thrombocytopenia was lower[RR 0.2(0.1–1.0)].Among pediatric BS,females had more genital ulcers,while males were more likely to have sk.n lesions,panuveitis,vascular involvement,venous lesions,cardiac involvement,and aortic *** analysis classified pediatric BS into five clusters(C1–C5):C1(n=61,24.6%)showed gastrointestinal(GI)involvement;C2(n=44,17.7%)was the central nervous system(CnS)type where 23 cases overlapped joint involvement;in C3(n=35,14.1%),all patients presented with arthritis or arthralgia;all patients in C4(n=29,11.7%)manifested ocular involvement,with a few patients overlapping with GI involvement or joint damage;C5(n=79,31.9%)was the mucocutaneous type,presenting both oral ulcers,genital ulcers,and sk.n *** The clinical features of pediatric and adult BS differ *** and female pediatric BS also have a distinct *** phenotypes including GI,CnS,joint,ocular,and mucocutaneous types were identified for pediatric BS.

关键词： Behget's syndrome Clinical manifestation Cluster analysis-Pediatric Phenotype

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Fabrication of a novel electrochemical sensor based on MnFe_(2)O_(4)/graphene modified glassy carbon electrode for the sensitive detection of bisphenol A

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Journal of Central South University 2024年第6期31卷 1856-1869页

作者： GAO Si-lei TAnG Jian-she XIAnG Li LOnG Jin-wei Department of Environmental and Energy Engineering Anhui Jianzhu UniversityHefei 230601China Anhui Provincial key Laboratory of Environmental Pollution Control and Resource Reuse Hefei 230601China

Manganese ferrite(MnFe_(2)O_(4))has the advantages of simple preparation,high resistivity,and high crystal ***,we have developed an electrochemical sensor utilizing graphene and MnFe_(2)O_(4) nanocomposites modified glassy carbon electrode(GCE),which is very efficient and sensitive to detect bisphenol A(BPA).MnFe_(2)O_(4)/graphene(GR)was synthesized by immobilizing the MnFe_(2)O_(4) microspheres on the graphene nanosheets via a simple one-pot solvothermal *** morphology and structure of the MnFe_(2)O_(4)/GR nanocomposite have been characterized through scanning electron microscopy(SEM),Fourier transform infrared spectroscopy(FT-IR),X-ray diffraction(XRD)and X-ray photoelectron spectroscopy(XPS).In addition,electrochemical properties of the modified materials are comparably explored by means of cyclic voltammetry(CV),electrochemical impedance spectroscopy(EIS)and differential pulse voltammetry(DPV).Under the optimal conditions,the proposed electrochemical sensor for the detection of BPA has a linear range of 0.8-400μmol/L and a detection limit of 0.0235μmol/L(S/n=3)with high sensitivity,good selectivity and high *** addition,the proposed sensor was used to measure the content of BPA in real water samples with a recovery rate of 97.94%-104.56%.At present,the synthesis of MnFe_(2)O_(4)/GR provides more opportunities for the electrochemical detection of BPA in practical applications.

关键词： MnFe_(2)O_(4) graphene electrochemical sensor bisphenol A

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Proxitome profiling reveals a conserved SGT1- nSL1 signaling module that activates nLRmediated immunity

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Molecular Plant 2024年第9期17卷 1369-1391页

作者： Dingliang Zhang Xinxin Yang Zhiyan Wen Zhen Li Xinyu Zhang Chenchen Zhong Jiajie she Qianshen Zhang He Zhang Wenli Li Xiaoyun Zhao Mingliang Xu Zhen Su Dawei Li Savithramma P.Dinesh-kumar Yongliang Zhang State key Laboratory of Plant Environmental Resilience College of Biological SciencesChina Agricultural UniversityBejing 100193China Department of Plant Biology and The Genome Center College of Biological SciencesUniversity of CaliforniaDavisDavisCA 95616USA State key Laboratory of Plant Environmental Resilience College of Agronomy and BiotechnologyChina Agricultural UniversityBejing 100193China

Suppressor of G2 allele of skp1(SGT1)is a highly conserved eukaryotic protein that plays a vital role in growth,development,and immunity in both animals and *** some SGT1 interactors have been identified,the molecular regulatory network of SGT1 remains ***1 serves as a co-chaperone to stabilize protein complexes such as the nucleotide-binding leucine-rich repeat(nLR)class of immune receptors,thereby positively regulating plant ***1 has also been found to be asso-ciated with the SkP1-Cullin-F-box(SCF)E3 ubiquitin ligase ***,whether SGT1 targets im-mune repressors to coordinate plant immune activation remains *** this study,we constructed a toolbox for TurbolD-and split-TurbolD-based proximity labeling(PL)assays in nicotiana benthamiana and used the PL toolbox to explore the SGT1 interactome during pre-and post-immune *** comprehensive SGT1 interactome network we identified highlights a dynamic shift from proteins associ-ated with plant development to those linked with plant immune *** found that SGT1 interacts with necrotic Spotted Lesion1(nSL1),which negatively regulates salicylic acid-mediated defenseby inter-fering with the nucleocytoplasmic traffick.ng of non-expressor of pathogenesis-related genes 1(nPR1)during n nLR-mediated response to tobacco mosaic ***1 promotes the SCF-dependent degrada-tion of nSL1 to facilitate immune activation,while salicylate-induced protein k.nase-mediated phosphory-lation of SGT1further potentiates this *** nnLR,nSL1also functions in several other nLR-mediated ***,our study unveils the regulatory landscape of SGT1 and reveals a novel SGT1-nSL1 signaling module that orchestrates plant innate immunity.

关键词： suppressor of G2 allele of skp1 SGT1 proximity labeling n nLR immune receptor necrotic Spotted Lesion 1 nSL1 salicylic acid ubiquitination

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大同火山群及邻区中小地震重定位

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地震地质 2024年第2期46卷 336-356页

作者：许永强雷建设山西大同大学煤炭工程学院大同037000 应急管理部国家自然灾害防治研究院地壳动力学重点实验室北京100085

文中基于中国地震台网中心在大同火山群及周边地区记录到的2008年1月-2023年1月期间3 218个地震的到时资料,采用双差地震重定位法开展了重新定位研究,获得了2 447个事件的重定位结果。结果显示,地震大多发生在16km深度以浅处,集中分布... 详细信息

文中基于中国地震台网中心在大同火山群及周边地区记录到的2008年1月-2023年1月期间3 218个地震的到时资料,采用双差地震重定位法开展了重新定位研究,获得了2 447个事件的重定位结果。结果显示,地震大多发生在16km深度以浅处,集中分布于断陷盆地内及盆地边界的断裂带附近,整体走向nE-SW,与区域活动构造的活动断裂及其控制的地堑、半地堑型断陷盆地的走向较为一致。这些地震E-W向、S-n向、垂直向的平均定位误差约为0.21km、0.22km、0.30km,平均均方根残差为0.14s。口泉断裂带附近的地震分布由南部的较深、较集中变化为北部的较浅、较分散,可能与矿山开采活动有关。大同-阳高地震震源区的地震多集中在与大王村断裂平行的东侧隐伏断层的3~16km深度处,该隐伏断层与团堡断裂和六棱山山前断裂交会,可能与大同-阳高地震的余震活动有关。火山区内部的地震活动并不强烈。结合该区域新的背景噪声层析成像结果分析发现,大多数地震发生在低速异常边界,可能暗示了这些地震的发生与热物质上涌所携带的流体上升至地壳深度,进而降低断面有效正应力密切相关。

关键词：大同火山群口泉断裂带大同-阳高震区地震重定位

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