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减氮对华南早晚兼用型水稻产量、品质及氮吸收利用的影响

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西北农林科技大学学报（自然科学版） 2014年第9期42卷 83-90页

【目的】分析常规施磷钾条件下减氮对不同华南早晚兼用型水稻品种产量、品质及氮吸收利用的影响,为水稻精确减量施肥及氮高效利用提供参考。【方法】在大田常规施磷钾条件下,研究了3个不同水平氮肥处理(常规施氮肥(纯氮187.5kg/hm2)、减... 详细信息

【目的】分析常规施磷钾条件下减氮对不同华南早晚兼用型水稻品种产量、品质及氮吸收利用的影响,为水稻精确减量施肥及氮高效利用提供参考。【方法】在大田常规施磷钾条件下,研究了3个不同水平氮肥处理(常规施氮肥(纯氮187.5kg/hm2)、减氮28%(纯氮135.0kg/hm2)和不施氮肥(纯氮0kg/hm2))对不同基因型水稻("粤晶丝苗2号"、"桂香占"和"天优998")产量、品质及氮素吸收利用的影响。【结果】与常规施氮相比,减氮条件下"粤晶丝苗2号"和"桂香占"的每穗总粒数、结实率和千粒质量增加但有效穗数减少,对"天优998"产量构成因子无显著影响。减氮28%处理对水稻的碾磨品质和蒸煮品质无显著影响,提高了"天优998"的外观品质。减氮28%处理有利于提高"粤晶丝苗2号"和"桂香占"灌浆期剑叶蔗糖磷酸合成酶和蔗糖合成酶活性,对氮吸收影响不显著,但一定程度上利于提高氮素利用效率。【结论】适度减氮有利于华南早晚兼用型水稻增产、稳产及保持或改善稻米品质。

关键词：华南早晚兼用型水稻减氮处理产量稻米品质氮吸收利用

DNA damage response-related immune activation signature predicts the response to immune checkpoint inhibitors: from gastrointestinal cancer analysis to pan-cancer validation

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Cancer Biology & Medicine 2024年第3期21卷 252-266页

作者： Junya Yan Shibo Wang Jing Zhang Qiangqiang Yuan Xianchun Gao Nannan Zhang Yan pan Haohao Zhang Kun Liu Jun Yu Linbin Lu Hui Liu Xiaoliang Gao sheng Zhao Wenyao Zhang Abudurousuli Reyila Yu Qi Qiujin Zhang Shundong Cang Yuanyuan Lu Yanglin pan Yan Kong Yongzhan Nie State Key Laboratory of Holistic Integrative Management of Gastrointestinal Cancers and National Clinical Research Center for Digestive Diseases Xijing Hospital of Air Force Military Medical UniversityXi'an 710032China Department of Oncology Henan Provincial People's HospitalZhengzhou University People's HospitalZhengzhou 450o03China Faculty of Life Science Northwest UniversityXi'an 710069China Unit 73211 of the People's Liberation Army Nanjing 211800China Key Laboratory of Resource Biology and Biotechnology in Western China(Ministry of Education) School of MedicineNorthwest UniversityXi'an 710069China Shaanxi University of Chinese Medicine Second Clinical Medicine FacultyXi'an 712046China Key Laboratory of Carcinogenesis and Translational Research(Ministry of Education) Department of Renal Cancer and MelanomaPeking University Cancer Hospital and InstituteBeijing 100142China

Objective: DNA damage response(DDR) deficiency has emerged as a prominent determinant of tumor immunogenicity. This study aimed to construct a DDR-related immune activation(DRIA) signature and evaluate the predictive accuracy of the DRIA signature for response to immune checkpoint inhibitor(ICI) therapy in gastrointestinal(GI) ***: A DRIA signature was established based on two previously reported DNA damage immune response assays. Clinical and gene expression data from two published GI cancer cohorts were used to assess and validate the association between the DRIA score and response to ICI therapy. The predictive accuracy of the DRIA score was validated based on one ICI-treated melanoma and three pan-cancer published ***: The DRIA signature includes three genes(CXCL10, IDO1, and IFI44L). In the discovery cancer cohort, DRIA-high patients with gastric cancer achieved a higher response rate to ICI therapy than DRIA-low patients(81.8% vs. 8.8%;P pancreatic adenocarcinoma who received dual PD-1 and CTLA-4 blockade with radiation therapy. Furthermore, the predictive performance of the DRIA score was shown to be robust through an extended validation in melanoma, urothelial cancer, and ***: The DRIA signature has superior and robust predictive accuracy for the efficacy of ICI therapy in GI cancer and pancancer, indicating that the DRIA signature may serve as a powerful biomarker for guiding ICI therapy decisions.

关键词： DNA damage response-related immune activation immune checkpoint inhibitors biomarker gastrointestinal cancer pan-cancer

Modulated noble metal/2D MOF heterostructures for improved hydrogen storage of MgH_(2)

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Rare Metals 2024年第4期43卷 1672-1685页

作者： Zeng-Yi Li Li-Xian Sun Fen Xu Yu-Mei Luo Yong-Peng Xia sheng Wei Chen-Chen Zhang Ri-Guang Cheng Chao-Feng Ye Meng-Yuan Liu Ju-Lan Zeng Zhong Cao Hong-Ge pan School of Material Science and Engineering Guilin University of Electronic TechnologyGuilin541004China School of Chemistry and Chemical Engineering Changsha University of Science and TechnologyChangsha410114China Institute of Science and Technology for New Energy Xi’an Technological UniversityXi’an710021China

The conjugation of external species with twodimensional(2D)materials has broad application *** this study,we have explored the potential of noble metal/2D MOF heterostructures in hydrogen ***,the MgH_(2)-Ni-MOF@Pd system has shown remarkable hydrogen desorption/sorption performances,starting to liberate hydrogen at 1810C,which is 2300C lower than that of pristine *** the catalytic effect of Ni-MOF@Pd,the dehydrogenation apparent activation energy of MgH2 is noticeably decreased from(133.5±17.5)to(34.58±1.87)kJ·moL^(-1),and the hydrogenation apparent activation energy is reduced from(70.41±7.43)to(25.78±4.64)kJ·moL^(-1),which is lowered by 63.4%.The fully-dehydrogenated MgH2-NiMOF@Pd composite rapidly uptakes hydrogen,with 2.62wt%at 100℃and 6.06 wt%at 150℃within 300 s,*** mechanism analysis of MgH2 catalyzed by Ni-MOF@Pd has revealed that the transformation of Mg_2Ni and Mg_2NiH_4 could act as a"hydrogen pump",providing numerous channels for fast diffusion and transport of hydrogen ***,in the dehydrogenation process,the element Pd reacts with MgH_(2)to form the MgPd alloy phase,which makes MgH_(2)take precedence to decompose through the Mg-Pd alloy rather than self-decomposition,further reducing thermal stability and improving de/hydrogenation *** synergistic effect of Mg-Pd,Mg_2Ni,and the special ultra-thin 2D sheet structure of the additive is the main reason for the good hydrogen storage property of MgH_(2)-Ni-MOF@*** findings provide inspiration for designing efficient multifunctional additives with unique morphologies to optimize the hydrogen desorption/sorption behaviors of hydrogen storage materials.

关键词： Hydrogen storage Magnesium hydride 2D metal-organic framework nanosheets Ni/Pd Synergistic catalysis

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脉络膜生理特性及其与儿童青少年近视的关联

中国学校卫生 2024年第2期45卷 296-299,304页

作者：梁刚潘臣炜云南大学附属医院眼科昆明650021 苏州大学苏州医学院公共卫生学院

脉络膜是位于巩膜和Bruch膜之间的一个多功能动态结构,可能参与了眼球生长调节与近视发展,脉络膜厚度可能是预测儿童青少年近视发展及治疗防控效果的重要生物标志物。研究对脉络膜的生理结构、测量方法进行了综述和总结,探讨了脉络膜的... 详细信息

脉络膜是位于巩膜和Bruch膜之间的一个多功能动态结构,可能参与了眼球生长调节与近视发展,脉络膜厚度可能是预测儿童青少年近视发展及治疗防控效果的重要生物标志物。研究对脉络膜的生理结构、测量方法进行了综述和总结,探讨了脉络膜的影响因素,包括年龄、生理变化、屈光状态和眼轴长度、药物影响及光学环境等,指出了脉络膜厚度在儿童青少年近视研究中可能的应用。

关键词：脉络膜生理学近视影响因素

Alterations in the gut microbiota and the faecal metabolomes are potentially associated with gestational diabetes mellitus through inflammatory response

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Food Science and Human Wellness 2024年

作者： Ruili pan Xiaopeng Xu Ying Chen Haojue Wang Linlin Wang Peijun Tian Xing Jin Jianxin Zhao Wei Chen gang Wang State Key Laboratory of Food Science and Resources， Jiangnan University School of Food Science and Technology， Jiangnan University The Department of Clinical Laboratory， Wuxi Xishan People's Hospital The Department of Obstetrics and Gynecology， Wuxi Xishan People's Hospital National Engineering Research Center for Functional Food， Jiangnan University (Yangzhou) Institute of Food Biotechnology， Jiangnan University

Gestational diabetes mellitus (GDM) is a disease of glucose intolerance that first occurs during pregnancy. Accumulating evidence underlined a link between gut microbiota dysbiosis and GDM， and microbial metabolites represent a unique way to explore microbiota–host interactions. However， the associations between changes in the gut microbiota and microbial metabolites and immune homeostasis in the GDM pathogenesis remain largely unclear. In this prospective study， the characteristics of gut microbiota in both first trimester (T1) and second trimester (T2 ) were investigated in 46 GDM patients and 44 matched controls. We comprehensively profiled the microbial metabolites using non-targeted metabolomics and quantitatively targeted metabolomics， measurements of inflammatory cytokines and biomarkers of intestinal barrier function， and combined with correlation analysis in T2. Gut microbiota dybiosis was observed in GDM patients in both T1 and T2， and was characterised by the enrichment of multiple potentially harmful bacteria， such as UBA1819 and Erysipelatoclostridium. Besides， alterations in the microbiota were accompanied by a disturbance in tryptophan metabolism， mainly manifested as a shift towards the production of more kynurenine and less indole derivatives. Most importantly， correlation network analysis indicated that overgrowth of potential pathogens and tryptophan metabolism disorder were associated with inflammatory imbalance and disrupted epithelial barrier in GDM patients. Theses findings provide a greater understanding of the pathogenesis and new targets for microecological interventions by mediating tryptophan metabolism in GDM.

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Efficient micrometer-scale thick-film perovskite solar cells with superior stability

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Rare Metals 2024年第4期43卷 1647-1657页

作者： Jian-Fei Hu gang Chen Shun-Zhang Yu Yue-Xin Lin Kai-Yu Wang Zong-Wei Li Guo-Dong Zhang Teng-Fei pan Ya-Jing Li Ming-Jie Li Ying-Dong Xia Yi-Fan Lv Yong-Hua Chen Key Laboratory of Flexible Electronics(KLoFE)and Institute of Advanced Materials(IAM) School of Flexible Electronics(Future Technologies)Nanjing Tech University(NanjingTech)Nanjing211816China Department of Applied Physics The Hong Kong Polytechnic UniversityHong Kong999077China Shenzhen Research Institute The Hong Kong Polytechnic UniversityShenzhen518057China Optics Valley Laboratory Hubei430074China

It is essential to enhance the thickness of the absorber layer for perovskite solar cells(PSCs)to improve device performance and reduce industry ***,thick perovskite films(>1μm)are difficult to be fabricated by employing traditional solvents,such as N,N-dimethylformamide(DMF),dimethyl sulfoxide(DMSO).Besides,it is a challenge to fabricate thick-film perovskite owing to the deteriorated surface morphology and serious defect ***,a simple method was reported to deposit uniform pinhole-free perovskite films with a thickness of more than 2μm utilizing the methylamine acetate(MAAc)ionic liquid as the *** with methylammonium chloride(MACl)as an additive,thick-film perovskite with~2μm in grain size and few grain boundaries(GBs)was prepared,which dramatically improved the perovskite crystal quality and enhanced carrier transport *** final PSCs exhibited a power conversion efficiency(PCE)of 20.16%.The device showed improved stability with 95%of its initial efficiency in a nitrogen environment over 5000 *** work provides an alternative strategy to produce extremely efficient and stable thick-film *** can be believed that this device has great potential in the application of large areas and laminated PSCs.

关键词： Perovskite solar cells Thick-film Stability Ionic liquid

施氮水平对杂交中稻红莲优6号产量和品质的影响

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湖北农业科学 2006年第4期45卷 436-438页

作者：潘圣刚曹凑贵蔡明历程建平华中农业大学植物科学技术学院武汉430070

采用小区试验,研究了不同施氮水平对杂交中稻红莲优6号产量和品质的影响。结果表明,合适的施氮量(公顷施纯氮210 kg)可以增加群体叶面积指数、提高光合速率、改善群体光环境,最终达到增加产量和改善品质之目的。

关键词：施氮水平杂交中稻红莲优6号产量品质

Value of negative pressure sealing drainage on wound healing of Gustilo IIIB and IIIC open fractures

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World Journal of Clinical Cases 2024年第20期12卷 4199-4205页

作者： Bo Fang Yong-sheng Wang Wei Li Kai Ying gang Zong Department of Trauma Surgery The Second People’s Hospital of DalianDalian 116019Liaoning ProvinceChina

BACKGROUND Gustilo III fractures have a high incidence and are difficult to *** often experience difficulty in wound *** pressure drainage technology can help shorten wound healing time and has positive value in improving patient *** To explore the clinical value of the negative pressure sealing drainage technique in wound healing of Gustilo IIIB and IIIC open *** Eighty patients with Gustilo IIIB and IIIC open fractures with skin and soft tissue injuries who were treated in the Second People’s Hospital of Dalian from March 2019 to December 2021 were selected as the research *** were divided into a study group(n=40,healed with negative pressure closed drainage)and a control group(n=40,healed with conventional dressing changes)according to the variation in the healing they *** efficacy of the clinical interventions,the variations in the regression indicators(time to wound healing,time to fracture healing,time to hospitalization),and the conversion and healing of bacterial wounds were compared 1-3 mo after the *** The total effective rate of patients among the study group was 95.00%(38/40),which was notably higher than 75.00%(30/40)among the control group(P<0.05).The wound healing time,fracture healing time,and hospital stay of the patients in the study group was shorter than the control group(P<0.05).After the intervention,the negative bacterial culture at the wound site rate and wound healing rate of the patients among the study group increased compared to the control group(P<0.05).CONCLUSION Negative pressure sealing and drainage technology has a good therapeutic effect on patients with Gustilo IIIB and IIIC open fracture wounds with skin and soft tissue *** can notably enhance the wound healing rate and the negative rate of bacteria on the wound surface and help to speed up the recovery process of patients.

关键词： Negative pressure closed drainage Gustilo type III open fracture Wound healing Clinical outcome Research value

Study on the Mechanism of Glutamine Promoting the Synthesis of Colonic Mucin and Maintaining the Stability of Intestinal Microbiota in Septic Mice

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Food Science and Human Wellness 2024年

作者： Yanyan pan gang Yang Dan Wu Yan Wei Shijun Fan Lin Xia Qian Chen Qianying Huang Yongling Lu Xi Peng Clinical Medical Research Center， Southwest Hospital， Third Military Medical University (Army Medical University) Burn Department， Ningbo No.2 Hospital nstitute of Burn Research， State Key Laboratory of Trauma and Chemical Poisoning， Southwest Hospital， Third Military Medical University (Army Medical University)

Colonic mucus and gut microbiota closely linked through mutual regulatory effect. While their alterations during sepsis and whether glutamine can maintain the colonic mucus barrier and gut microbiota stability are unclear. Cecal ligation and puncture-induced sepsis in mice was utilized to observe changes in colonic mucus， gut microbiota， and their interaction with glutamine intervention. Our findings indicated that glutamine mitigated sepsis-induced intestinal damage and restores colonic mucus barrier function by augmenting mucin synthesis. Further analysis revealed that goblet cells were under oxidative stress after sepsis， resulting in anterior gradient-2 (AGR2)， the key mucin-modifying enzyme， being dissynthesized， and inhibiting mucin2 (MUC2) maturation. glutamine could ameliorates this situation by promoting the key enzyme glucose-6-phosphate dehydrogenase (G6PD) glycosylation in the pentose phosphate pathway， increasing the reduced nicotinamide adenine dinucleotide phosphate (NADPH) synthesis， reducing endoplasmic reticulum stress， and accelerating AGR2 synthesis and MUC2 maturation. Additionally， glutamine aided in maintaining gut microbiota stability during sepsis， up-regulating mucin-associated bacteria such as Akkermansia and Alistipes. These bacteria， intimately linked to mucin synthesis and degradation， may impact intestinal mucus stability. In conclusion， glutamine can maintain goblet cell redox balance， promotes AGR2 synthesis and MUC2 maturation， shields the mucus barrier， and potentially maintains gut microbiota stability by regulating the interaction between bacteria and mucus， thus alleviating sepsis-induced intestinal damage.

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