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Atmospheric nitrogen deposition affects forest plant and soil system carbon:nitrogen:phosphorus stoichiometric flexibility:A meta-analysis

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Forest Ecosystems 2024年第3期11卷 307-317页

作者： Xiyan Jiang Xiaojing Wang Yaqi Qiao Yi Cao Yan Jiao An yang Mengzhou Liu Lei Ma mengya Song Shenglei Fu Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions College of Geography and Environmental ScienceHenan UniversityKaifeng475004China Henan Key Laboratory of Integrated Air Pollution Control and Ecological Security College of Geography and Environmental ScienceHenan UniversityKaifeng475004China Henan Dabieshan National Field Observation and Research Station of Forest Ecosystem Henan UniversityZhengzhou450046China

Background:Nitrogen(N)deposition affects forest stoichiometric flexibility through changing soil nutrient availability to influence plant ***,the effect of N deposition on the flexibility of carbon(C),N,and phosphorus(P)in forest plant-soil-microbe systems remains ***:We conducted a meta-analysis based on 751 pairs of observations to evaluate the responses of plant,soil and microbial biomass C,N and P nutrients and stoichiometry to N addition in different N intensity(050,50–100,>100 kg·ha^(-1)·year^(-1)of N),duration(0–5,>5 year),method(understory,canopy),and matter(ammonium N,nitrate N,organic N,mixed N).Results:N addition significantly increased plant N:P(leaf:14.98%,root:13.29%),plant C:P(leaf:6.8%,root:25.44%),soil N:P(13.94%),soil C:P(10.86%),microbial biomass N:P(23.58%),microbial biomass C:P(12.62%),but reduced plant C:N(leaf:6.49%,root:9.02%).Furthermore,plant C:N:P stoichiometry changed significantly under short-term N inputs,while soil and microorganisms changed drastically under high N *** N addition primarily affected plant C:N:P stoichiometry through altering plant N content,while understory N inputs altered more by influencing soil C and P *** N significantly influenced plant and soil C:N and C:P,while ammonia N changed plant N:*** C:P and soil C:N were strongly correlated with mean annual precipitation(MAT),and the C:N:P stoichiometric flexibility in soil and plant under N addition connected with soil ***,N addition decoupled the correlations between soil microorganisms and the ***:N addition significantly increased the C:P and N:P in soil,plant,and microbial biomass,reducing plant C:N,and aggravated forest P ***,these impacts were contingent on climate types,soil layers,and N input *** findings enhance our comprehension of the plant-soil system nutrient cycling mechanisms in forest ecosystems and plant strategy responses to N deposition.

关键词： C:N:P stoichiometry Meta-analysis Forest ecosystem Nitrogen addition form Nutrient cycles

Effects of Fertility and Density on Biomass Production,Translocation and Lodging Resistance of Millet(Setaria italica L.)in North China

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Agricultural Biotechnology 2018年第5期7卷 58-63,66页

作者： Qing ZHAO Guoshun ZHAO mengya yang Susheng CHEN Kai XIAO Baoding Academy of Agricultural Sciences Baoding 071000China College of Agronomy Agricultural University of HebeiBaoding 0710013China Key Laboratory of Crop Growth Regulation of Hebei Province Baoding 071001China

In this study, the plant biomass production, biomass translocation rates across tissues and the lodging resistant-associated traits of millet （ Setaria italica L.） in North China were investigated. Among the four summer millet cultivars, Baogu 19 exhibited improved plant biomass （PB） production at flowering and maturity stages, biomass translocation amount （BTA） from vegetative tissues to seeds during filling period, and lodging resistant-associated （LRA） traits compared with other cultivars, including enhanced stem lignin contents, increased anti-broken resistance （ABR）, anti-puncturing resistance （APR）, and stem diameter （SD） of plants. Compared with treatment regular cultivation （RC）, high fertility treatment （HF） increased the plant BP, BTA from vegetative tissue to seed at filling stage, and the plant LRA traits; whereas high density treatment （HD） decreased the plant BP at plant level, plant BTA from vegetative tissues to seeds at filling stage, and the plant LRA traits. Correlation analysis revealed that stem ABR is significantly correlated with the plant lodging resistant-associated traits including APR and SD in the summer millet cultivars examined under various cultivation treatments. Our investigation indicates that cultivar Baogu 19 together with suitable fertilization and density can promote the plant biomass production, enhance vegetative tissue biomass translocation to seeds, and improve the lodging resistance of summer millet plants in North China.

关键词： Millet ( Setaria italica L.) cultivation condition plant biomass biomass translocation rate anti-lodging resistance

Effects of Nitrogen Amount on the Photosynthesis Parameters of Summer Millet in North China

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Agricultural Biotechnology 2018年第3期7卷 19-23页

作者： Qing ZHAO Guoshun ZHAO mengya yang Susheng CHEN Kai XIAO Baoding Academy of Agricultural Sciences Baoding 071000 China College of Agronomy Agricultural University of Hebei Baoding 071001 China Key Laboratory of Crop Growth Regulation of Hebei Province Baoding 071001 China

In this study,effects of nitrogen（ N） amount applied on photosynthesis behaviors of the summer millet in North China was investigated. Photosynthetic rates（ Pn）,chlorophyll contents（ Chl）,photosynthetic active duration（ PAD）,and chlorophyll relative steady phase（ RSP） in flag and the upper third leaves were assessed in cultivars of Baogu 19,Jigu 19,9050,and 60 D under three N treatments [i. e.,0（ control）,75,and 150 kg/hm2]. Results indicated that the photosynthesis parameters were drastically regulated by external N levels,all of them showing elevation along with the increased N input in both assayed *** the cultivars examined,behaviors of the photosynthetic parameters were much better in Baogu 19 and worse in 60 D. The plant yields in the cultivars under various N treatments were shown to be in consistent with the behavior of the photosynthesis parameters. Correlation analysis revealed that plant yield is positively correlated with Pn and Chl and significantly positively correlated with PAD and RSP,suggesting that longer effective photosynthetic duration of leaves impacts largely on plant biomass production and the yield formation potential. Our investigation indicates that suitable external N applied can increase the yield of summer millet associating with the improvement of photosynthesis behaviors in upper leaves that contribute to plant biomass at the late growth stage. Baogu 19 exhibited higher plant yield together with improved photosynthetic parameters in upper leaves,suggesting its potential as an elite cultivar in planting in the summer season of North China.

关键词： Millet (Setaria italica L. ) Summer-sown eultivar N application level Photosynthesis parameter Plant productivity

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泰戈尔访华与20世纪20年代中国文坛

中州学刊 2006年第4期 212-216页

作者：杨萌芽复旦大学中文系上海200433

泰戈尔访华所产生的影响已经具有了文学史意义。泰戈尔对“五四”以后的中国文学产生过重要影响,针对1924年泰戈尔访华,文学界有不同的反应,新文学内部反对的浪潮压倒了欢迎的声音。茅盾等左翼作家对借泰戈尔宣扬东方文明优胜论进行了... 详细信息

泰戈尔访华所产生的影响已经具有了文学史意义。泰戈尔对“五四”以后的中国文学产生过重要影响,针对1924年泰戈尔访华,文学界有不同的反应,新文学内部反对的浪潮压倒了欢迎的声音。茅盾等左翼作家对借泰戈尔宣扬东方文明优胜论进行了激烈批评,胡适等自由主义知识分子相对肯定了泰戈尔的思想价值,王统照等较为客观的评价了泰戈尔的文学价值,对泰戈尔访华的不同意见反映出后五四文学场域的复杂性。文章认为,在围绕泰戈尔访华的激烈论争中,泰戈尔的文学成就并未得到仔细深入地研究,这次事件之后的中国文学越来越无力摆脱与政治意识的纠缠。

关键词：泰戈尔访华激进思维文学场域

A nanoagent for concurrent therapy of breast cancer bone metastasis and cancer-induced bone pain through SLC7A11 interruption and photodynamic therapy

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Chinese Chemical Letters 2024年第2期35卷 295-299页

作者： Qi Fu Zhongming Lian mengya Niu Yaru Huang Yanqiu Ai Long He Dandan Zhang Cuixia Zheng Jian-Jun yang Lei Wang Dandan Tian Department of Anesthesiology Pain and Perioperative MedicineThe First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450001China School of Pharmaceutical Sciences Zhengzhou UniversityZhengzhou 450001China Translational Medical Center of Huaihe Hospital Henan UniversityKaifeng 475004China Key Laboratory of Advanced Drug Preparation Technologies Ministry of EducationSchool of Pharmaceutical SciencesZhengzhou UniversityZhengzhou 450001China

Bone metastasis,a life-threatening complication of advanced breast cancer,is often accompanied by debilitating pain(cancer-induced bone pain,CIBP)that severely impairs life quality and *** concurrent treatment of bone metastases and CIBP remains a clinical challenge because the therapeutic options are *** this study,we construct a near-infrared light-activated nano-therapeutic system to meet this *** detail,sorafenib(SRF)and photosensitizer(chlorin e6,Ce6)are encapsulated into mesoporous hydroxyapatite nanoparticles(HANPs),which are further functionalized with hyaluronic acid(HA)to obtain HA-SRF/Ce6@HANPs *** designed nanoplatform destroys tumor cells in vitro and in vivo via the synergism of SRF(interrupting the exchange of cystine/glutamate by inhibiting SLC7A11)and photodynamic therapy(PDT,inducing reactive oxygen species generation).The decrease in tumor burden and reduction of extracellular glutamate significantly attenuate CIBP in mice model with developing bone ***,the combination of HA-SRF/Ce6@HANPs and PDT inhibit osteoclasts activation,promote osteoblast differentiation and accelerate bone ***,the nanoagent with good biocompatibility may provide an effective therapy method for the concurrent treatment of breast cancer bone metastasis and CIBP.

关键词： Breast cancer bone metastasis Cancer-induced bone pain Cystine/glutamate antiporter Sorafenib Photodynamic therapy

Li-promoted C3N4 catalyst for efficient isomerization of glucose into fructose at 50℃ in water

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Green Energy & Environment 2024年第9期9卷 1419-1426页

作者： Wang Liu Yanfei Zhang mengya Sun Xinpeng Zhao Shenggang Li Xinqing Chen Liangshu Zhong Lingzhao Kong CAS Key Laboratory of Low-Carbon Conversion Science and Engineering Shanghai Advanced Research Institute Chinese Academy of Sciences University of Chinese Academy of Sciences School of Physical Science and Technology Shanghai Tech University School of Environmental Science and Engineering Suzhou University of Science and Technology

Efficient and selective glucose-to-fructose isomerization is a crucial step for production of oxygenated chemicals derived from sugars,which is usually catalyzed by base or Lewis acid heterogeneous ***,high yield and selectivity of fructose cannot be simultaneously obtained under mild conditions which hamper the scale of application compared with enzymatic ***,a Li-promoted C3N4catalyst was exploited which afforded an excellent fructose yield （40.3 wt%） and selectivity （99.5%） from glucose in water at 50~oC,attributed to the formation of stable Li–N bond to strengthen the basic sites of ***,the so-formed N6–Li–H2O active site on Li–C3N4catalyst in aqueous phase changes the local electronic structure and strengthens the deprotonation process during glucose isomerization into *** superior catalytic performance which is comparable to biological pathway suggests promising applications of lithium containing heterogeneous catalyst in biomass refinery.

关键词： Glucose Fructose Isomerization Li–C 3 N 4 Density functional theory calculations

Construction and validation of a risk-prediction model for anastomotic leakage after radical gastrectomy: A cohort study in China

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Laparoscopic, Endoscopic and Robotic Surgery 2024年第1期7卷 34-43页

作者： Jinrui Wang Xiaolin Liu Hongying Pan Yihong Xu Mizhi Wu Xiuping Li yang Gao Meijuan Wang mengya Yan Nursing Department Sir Run Run Shaw HospitalZhejiang University School of MedicineHangzhou 310016China Department of General Surgery Sir Run Run Shaw HospitalZhejiang University School of MedicineHangzhou 310016China School of Nursing Zhejiang Chinese Medical UniversityHangzhou 310053China

Objectives:Anastomotic leakage(AL)stands out as a prevalent and severe complication following gastric cancer *** frequently precipitates additional serious complications,significantly influencing the overall survival time of *** study aims to enhance the risk-assessment strategy for AL following gastrectomy for gastric ***:This study included a derivation cohort and validation *** derivation cohort included patients who underwent radical gastrectomy at Sir Run Run Shaw Hospital,Zhejiang University School of Medicine,from January 1,2015 to December 31,*** evidence-based predictor questionnaire was crafted through extensive literature review and panel *** on the questionnaire,inpatient data were collected to form a model-derivation *** cohort underwent both univariate and multivariate analyses to identify factors associated with AL events,and a logistic regression model with stepwise regression was developed.A 5-fold cross-validation ensured model *** validation cohort included patients from August 1,2021 to December 31,2021 at the same *** the same imputation method,we organized the validation-queue *** then employed the risk-prediction model constructed in the earlier phase of the study to predict the risk of AL in the subjects included in the validation *** compared the predictions with the actual occurrence,and evaluated the external validation performance of the model using model-evaluation indicators such as the area under the receiver operating characteristic curve(AUROC),Brier score,and calibration ***:The derivation cohort included 1377 patients,and the validation cohort included 131 *** independent predictors of AL after radical gastrectomy included age65 y,preoperative albumin<35 g/L,resection extent,operative time240 min,and intraoperative blood loss90 *** predictive model exhibited a solid AUROC of 0.750(95%CI:0.694e0.806;p<0.001)with a Br

关键词： Stomach neoplasms Anastomotic leak Risk factors Prediction model Risk assessment

Effects of Biogas Slurry Recirculation on Anaerobic Digestion Performance of Maize Straw Silage

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Asian Agricultural Research 2018年第12期10卷 49-51,54页

作者： Xinhe LIU Nan LI mengya yang Benyue ZHANG Guangbo XU Renzhe PIAO Hongyan ZHAO College of Agronomy Yanbian University

In order to investigate the effects of slurry recirculation technology on anaerobic digestion performance of maize straw silage,maize straw silage was fermented with recirculated biogas slurry,and the gas production,p H value,methane content,volatile organic acids( VFAs)contents,chemical oxygen demand( COD) removal rate and other indicators were studied. The results showed that the fermentation time was positively correlated with daily gas production,methane content,cumulative gas production,VFAs and COD removal rate. Although the p H value fluctuated,it was still in the normal reaction range. The daily gas production was about 1. 26 L. The acetic acid content increased first,then decreased,then increased,and finally stabilized. The biogas slurry recirculation technology saves water resources by 40 m L/d without affecting the normal gas production of anaerobic fermentation,and reduces the consumption of environmental resources. It has important development significance for the sustainable use of biomass resources.

关键词： Biogas slurry recirculation Maize straw silage Anaerobic digestion performance Biomass resources

Pectin Oligosaccharides Glycosylation Modification Reduced the Sensitization of Shrimp Tropomyosin by Regulating Cytokines Expression and Th1/Th2 Immune Balance

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Food Science and Human Wellness 2024年

作者： mengya Zhao Chunyu Wu Jing Liu Xinian Li Zhenpeng Gao Xin yang Di Liu Fangyu Long College of Food Science and Engineering， Northwest A&F University Institute of Animal Husbandry and Veterinary Medicine， Guizhou Academy of Agricultural Sciences College of Animal Science and Technology， Northwest A&F University

Tropomyosin (TM) is the predominant allergenic protein in shrimp， which has induced IgE-mediated food allergy reactions. In this study， Lit v 1 was purified from Penaeus vannamei muscles， which were glycosylated by pectic oligosaccharides. The results showed that Di-Galacturonic acid (DGA) and galacturonic acid (GA) induced the unfolding of the primary protein structure of TM， and changed alpha-helical structure， and IgE binding capacity. In addition， compared with TM-sensitized BALB/c mice， galacturonic acid-modified TM (GA-TM) and Di-Galacturonic acid-modified TM (DGA-TM) were insufficient to stimulate sensitization， and significantly reduced the hypersecretion of IgE， IgG1， HIS， and IL-4， up-regulated IgG2a and IFN-γ levels to improve imbalanced Th1/Th2， Treg/Th17 immunity， and promoted mRNA expression of tight junction proteins. Together， this study confirmed that glycosylation modification alleviated sensitization by altering TM structure， reducing IgE binding allergic inflammatory response， and regulating cytokine immune balance. Overall， these results indicated that glycosylation modification was a promising method for decreasing the allergenic reactivity of allergic proteins.

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