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Weighted Composition Followed and Proceeded by Differentiation Operators from Q_k(p,q) Space to Weighted α-Bloch Space

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Journal of Mathematical Research and Exposition 2011年第6期31卷 1097-1107页

作者： jian ren long Peng Cheng WU wSchool of Mathematics and Computer Science Guizhou Normal University Guizhou 550001 P. R. China

We study the boundedness and compactness of the weighted composition followed and proceeded by differentiation operators from Q_k（p,q）space to weighted α-Bloch space and little weighted α-Bloch *** necessary and s... 详细信息

关键词： Q_k(p q)space weighted α-Bloch space weighted composition operators differentiation operators boundedness compactness.

Effect of polymorphism and type II diabetes on aspirin resistance in patients with unstable coronary artery disease

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Chinese Medical Journal 2011年第11期124卷 1731-1734页

作者： GAO Fei WANG Zan-xin MEN jian-long ren Jing WEI Min-xin Department of Carcliovascular Surgery Department of Clinical LaboratoryTianjin Medical University General Hospital Tianjin 300052China

Background Aspirin is widely used in the secondary prevention of coronary artery diseases, including myocardial infarction, stroke, and vascular related deaths. However, the antiplatelet effect of aspirin appears to be variable and aspirin resistance （AR） is currently still controversial for Chinese patients. The aim of this study was to describe the prevalence of AR, and identify possible risk factors associated with a lack of response to aspirin treatments in patients with unstable coronary artery disease.

关键词： aspirin," platelet aggregation," thromboxane genetic polymorphism

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利用内部温度史重构表面未知热通量

山东大学学报（理学版） 2019年第9期54卷 83-90,97页

作者：任建龙兰州交通大学数理学院

讨论了一类利用内部某点不同时刻的温度观测值重构加热器壁表面热通量的热传导反问题。利用分离变量法求解出正问题的解析解,然后将原问题转化为第二类Volterra积分方程,并证明了积分方程解的唯一性。利用一种直接求解法进行数值模拟,... 详细信息

讨论了一类利用内部某点不同时刻的温度观测值重构加热器壁表面热通量的热传导反问题。利用分离变量法求解出正问题的解析解,然后将原问题转化为第二类Volterra积分方程,并证明了积分方程解的唯一性。利用一种直接求解法进行数值模拟,数值结果验证了所提出方法的可行性与有效性,且表面热通量的重构效果很好。

关键词：热通量反问题 Volterra积分方程唯一性数值模拟

On the Growth of Solutions of Second Order Linear Differential Equations with Extremal Coefficients

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数学学报(中文版) 2013年第2期 295-295页

作者： jian ren long Peng Cheng WU Zheng ZHANG

In this paper,we consider the differential equation f" + A(z)f' + B(z)f = 0,where A and B≠0 are entire *** that A is extremal for Yang's inequality,then we will give some conditions on B which can guarantee that ever... 详细信息

关键词： On the Growth of Solutions of Second Order Linear Differential Equations with Extremal Coefficients

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非线性微分--差分方程的整函数解

数学学报（中文版） 2022年第3期65卷 435-446页

作者：秦大专龙见仁贵州师范大学数学科学学院贵阳550025

本文考虑了非线性微分--差分方程f^(n)(z)+q(z)e^(Q(z))f^((k))(z+c)+p_(1)e^(α1z)+p2e^(α2z)与f^(n)(z)+q(z)e^(Q(z))Δ_(c)f=p1e^(λz)+p_(2)e^(-λz)解的增长性,其中n≥l,k≥l是两个整数,q(z)是非零多项式,Q(z)是非常数多项式.c,λ,α_(1),α_(2),p_(1),p_(2)为非零常数,α_(1)≠α_(2).特别地,我们展示了指数多项式满足某些特殊形式时,它们是非线性微分--差分方程的解,这些结果是已有结果的完善和推广.

关键词：指数多项式整函数解非线性微分-差分方程有穷级

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加权Bloch型空间上的广义复合算子

数学学报（中文版） 2016年第2期59卷 279-288页

作者：龙见仁李叶舟贵州师范大学数学与计算机科学学院贵阳550001 北京邮电大学理学院北京100876

研究了加权Bloch型空间上的广义复合算子的有界性和紧性,得到了刻画该算子为有界和紧的一些充分必要条件.

关键词：加权Bloch型空间广义复合算子有界性紧性

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基于变分理论与时间相关的抛物型反源问题

山东大学学报（理学版） 2018年第10期53卷 61-71页

作者：甄苇苇曾剑任建龙兰州交通大学数理学院甘肃兰州730070

研究了一类变系数抛物型方程的源项重构问题,这里的源项仅与时间相关。与以往工作不同,文中的附加条件是关于空间变量积分后得到的,这种类型的附加条件有利于消除随机选择所带来的误差,但同时会导致很多分析方法不可用。基于变分理论,... 详细信息

研究了一类变系数抛物型方程的源项重构问题,这里的源项仅与时间相关。与以往工作不同,文中的附加条件是关于空间变量积分后得到的,这种类型的附加条件有利于消除随机选择所带来的误差,但同时会导致很多分析方法不可用。基于变分理论,首先给出了变分公式,并利用变分公式证明了解的唯一性;其次给出了时间离散模型和基于线性离散化的变分形式,导出了一系列先验估计,并证明了弱解的存在性。

关键词：反源问题变分理论唯一性弱解存在性

Transforming waste particles into valuable adsorbents via amyloid-mediated molecular engineering

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Science China Chemistry 2025年第1期68卷 317-328页

作者： Qingmin Yang jian Zhao Yujia Zhang Xingyu Zhou Hao ren Bowen Hu Zhongli Lei Lixin Chen Peng Yang School of Material and Chemical Engineering Bengbu University Anhui Provincial Engineering Laboratory of Silicon-Based Materials School of Chemistry and Chemical Engineering Northwestern Polytechnical University Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical EngineeringShaanxi Normal University Xi'an Key Laboratory of Polymeric Soft Matter School of Chemistry and Chemical Engineering Shaanxi Normal University International Joint Research Center on Functional Fiber and Soft Smart Textile School of Chemistry and Chemical EngineeringShaanxi Normal University

The high-value utilization of industrial solid waste using a facile and eco-friendly process is of great interest and significance in reducing environmental pollution and developing a green circular economy. Herein, we propose an amyloid-mediated molecular engineering strategy to transform particulate waste into valuable adsorbents for metal ions. Our method has the advantage of aqueous solution fabrication under mild conditions without the use of high-temperature hydrothermal methods and toxic chemical reagents. Amyloid-mediated molecular engineering manipulates the phase transition of bovine serum albumin(BSA)on particulate waste surfaces, resulting in a remarkable ～3.1 times improvement in the adsorption capacity of fly ash, a typical industrial solid waste for gold ions after modification with the phase-transitioned BSA(PTB). The resultant adsorption ability was 69–1,980 times higher than those of conventional and emerging adsorbent materials such as ion exchange resins, activated carbon(AC), covalent organic frameworks(COFs), and metal-organic frameworks(MOFs). We further demonstrated the application of our PTB-modified materials in the recovery of precious metals from low-grade gold ore and electronic waste leachates. Consequently, this strategy could increase the value of waste materials nearly 27 times. In addition, this method is generally extendable to other conventional industrial adsorbents such as resin, clay, and Al2O3, and enhances their adsorption capabilities at least twofold. Overall, this work provides a simple and green approach for improving the adsorption performance of solid particles, and is expected to develop into a universal strategy for transforming waste particles into high-value-added products.

关键词： amyloid-like protein aggregates surface engineering fly ash solid waste adsorption

Bacterial indole-3-propionic acid inhibits macrophage IL-1β production through targeting methionine metabolism

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Science China Life Sciences 2025年

作者： Ziyi Han jian Fu Aiyan Gong Wenkai ren State Key Laboratory of Livestock and Poultry Breeding College of Animal Science South China Agricultural University Animal Disease-resistant Nutrition Key Laboratory of Sichuan Province Sichuan Agricultural University China Institute of Veterinary Drug Control

The gut microbiota plays key roles in host health by shaping the host immune responses through their metabolites, like indole derivatives from tryptophan. However, the direct role of these indole derivatives in macrophage fate decision and the underlying mechanism remains unknown. Here, we found that bacterial indole-3-propionic acid(IPA) downregulates interleukin-1beta(IL-1β) production in M1 macrophages through inhibition of nuclear factor-kappa B(NF-κB) signaling. Mechanistically, IPA binds specifically with methionine adenosyltransferase 2A(MAT2A) to promote S-adenosylmethionine(SAM) synthesis, which facilitates the DNA methylation of ubiquitin-specific peptidase 16(USP16, a deubiquitinase), and in turn promotes Toll-like receptor 4(TLR4) ubiquitination and NF-κB inhibition. Furthermore,IPA administration attenuates sepsis in mouse models induced by lipopolysaccharides(LPS), showcasing its potential as a microbial-derived adjunct in alleviating inflammation. Collectively, our findings reveal a newly found microbial metabolite-immune system regulatory pathway mediated by IPA.

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