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Statistical theory for hydrogen bonding fluid system of A_aD_d type(Ⅲ):Equation of state and fluctuations

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science{1. chemistry 2007年第2期50卷 183-189页

作者： wang haijun1,2,gu fang1,hong xiaozhong3 & ba xinwu1 1 college of chemistry and environment science,hebei university,baoding 071002,china 2 International Center for Materials Physics,Chinese Academy of sciences,Shenyang 110016,china 3 college of Physics science and Technology,hebei university,baoding 071002,china college of {1. and environment science Hebei University Baoding China International Center for Materials Physics Chinese Academy of Sciences Shenyang China college of Physics {1. and Technology Hebei University Baoding China

The equation of the state of the hydrogen bonding fluid system of AaDd type is studied by the principle of statistical mechanics. The influences of hydrogen bonds on the equation of state of the system are obtained based on the change in volume due to hydrogen bonds. Moreover,the number density fluc-tuations of both molecules and hydrogen bonds as well as their spatial correlation property are inves-tigated. Furthermore,an equation describing relation between the number density correlation function of "molecules-hydrogen bonds" and that of molecules and hydrogen bonds is derived. As application,taking the van der Waals hydrogen bonding fluid as an example,we considered the effect of hydrogen bonds on its relevant statistical properties.

关键词： hydrogen bonding fluid equation of state fluctuation correlation effect

Statistical theory for hydrogen bonding fluid system of A_aD_d type(II):Properties of hydrogen bonding networks

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science{1. chemistry 2007年第1期50卷 11-17页

作者： wang {1. hong xiaozhong gu fang ba xinwu college of {1. and environment science Hebei UniversityBaoding 071002China International Center for Materials Physics Chinese Academy of SciencesShenyang 110016China college of Physics {1. and Technology Hebei UniversityBaoding 071002China

Making use of the invariant property of the equilibrium size distribution of the hydrogen bonding clus- ters formed in hydrogen bonding system of AaDd type,the analytical expressions of the free energy in pregel and postgel regimes are *** the gel free energy and the scaling behavior of the number of hydrogen bonds in gel phase near the critical point are investigated to give the corre- sponding scaling exponents and scaling ***,some properties of intermolecular and in- tramolecular hydrogen bonds in the system,sol and gel phases are *** a result,the explicit relationship between the number of intramolecular hydrogen bonds and hydrogen bonding degree is obtained.

关键词： hydrogen bonding network gel phase scaling law

Restoring cellular calcium homeostasis to rescue ER stress by 1.2-bis(2-aminophenoxy)ethane-N,N,N’,N’-tetraacetic acid acetoxymethyl ester-loaded lipid-mPLGA hybrid-nanoparticles for acute kidney injury therapy

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Chinese Chemical Letters 2024年第3期35卷 337-345页

作者： Jingwen Zhang Jiahui Yan Yanan wang {1. Liu Xueping Sun Yuchao gu Liangmin Yu Changcheng Li Jun Wu Zhiyu He Frontiers science Center for Deep Ocean Multispheres and Earth System and Key Laboratory of Marine Chemistry Theory and TechnologyMinistry of EducationOcean University of ChinaQingdao 266100China college of {1. and Chemical Engineering Ocean University of ChinaQingdao 266100China School of Medicine and Pharmacy Ocean University of ChinaQingdao 266003China Sanya Oceanographic Institution Ocean University of ChinaQingdao 572024China Bioscience and Biomedical Engineering Thrust The Hong Kong University of Science and Technology(Guangzhou)NanshaGuangzhou 511400China Division of Life science The Hong Kong University of Science and TechnologyHong Kong 999077China

Early pathogenesis of ischemia-reperfusion(I/R)-induced acute kidney injury(AKI)is dominated by intracellular calcium overload,which induces oxidative stress,intracellular energy metabolism disorder,inflammatory activation,and a series of pathologic cascaded reactions that are closely intertwined with self-amplifying and interactive feedback loops,ultimately resulting in cell damage and kidney ***,most nanomedicines originate from the perspective of antioxidant stress,which can only quench existing reactive oxide species(ROS)but cannot prevent the continuous production of ROS,resulting in insufficient *** a safe and promising drug,baPTA-AM is hydrolyzed into baPTA by intracellular esterase upon entering cells,which can rapidly chelate with overloaded Ca^(2+),restoring intracellular calcium homeostasis,thus inhibiting ROS regeneration at the ***,we designed a KTP-targeting peptide-modified yolk-shell structure of liposome–poly(ethylene glycol)methyl ether-block-poly(L-lactide-co-glycolic)(mPLGA)hybrid nanoparticles(1.0 nm),with the characteristics of high encapsulation rate,high colloid stability,facile modification,and prolonged blood circulation *** the ba/mPLGA@Lipo-KTP was targeted to the site of kidney injury,the cholesteryl hemisuccinate(CHEMS)in the phospholipid bilayer,as an acidic cholesterol ester,was protonated in the simulated inflammatory slightly acidic environment(pH 6.5),causing the liposomes to rupture and release the ba/mPLGA nanoparticles,which were then depolymerized by intracellular *** baPTA-AM was diffused and hydrolyzed to produce baPTA,which can rapidly cut off the malignant loop of calcium overload/ROS generation at its source,blocking the endoplasmic reticulum(ER)apoptosis pathway(ATF4–CHOP–bax/Bcl-2,Casp-1.–Casp-3)and the inflammatory pathway(TNF-α–NF-κB–IL-6 axes),thus alleviating pathological changes in kidney tissue,thereby inhibiting the expression of renal tubular marker kidney injury mole

关键词： baPTA-AM Calcium overload Acid-responsive AKI ER stress

Is the polydispersity exponent of the hyperbranched polymers the 3/2 or 5/2?

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Chinese science Bulletin 2006年第12期51卷 1526-1528页

作者： ba {1. LIU Ying wang Sujuan wang haijun college of {1. and environment science Hebei University Baoding 071002 China Department of chemistry Hebei Normal University of Science and Technology Qinhuangdao 066600 China

The number of the hyperbranched polymers in the system is investigated for the polymerization process to give the asymptotic form of the concentration of the n-mer. The polydispersity exponent is calculated, which coincides with that of the classical result. Finally, the asymptotic forms of the number, the weight and the z-average degrees of the polymerization were evaluated analytically to obtain polydispersity index, which is close to 1.as the reaction is quantitatively completed.

关键词：超分支聚合体多分散指数聚合过程渐近形式