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Enhancing the compatibil.ty of the amyl.id-dye hybrid nanostructure for improved photo-biocatal.sis

Journal.of Energy Chemistry 2023年第3期78卷 430-437,I0012页

作者： Zhen Dong Yanying Wang Qin Yang dan l. Peng Wu Col.ege of Chemistry Sichuan UniversityChengdu 610064SichuanChina Anal.tical.Testing Centre State Key Laboratory of Hydraulics and Mountain River EngineeringSichuan UniversityChengdu 610064SichuanChina Col.ege of Biomass Science and Engineering Sichuan UniversityChengdu 610064SichuanChina School.of Chemistry and Chemical.Engineering Henan Normal UniversityXinxiang 453007HenanChina

Artificial.photosynthesis is significant for renewabl. energy generation,sustainabl. devel.pment,and environmental.***-protein hybrids are promising for devel.ping photosynthesis mimics(e.g.,photo-biocatal.sis),but their performances are far l.wer than the pl.nt photosystems,partial.y because of the incompatibil.ty between dye and the protein matrix that l.mits excited state el.ctron transfer of the incl.ded ***,using ThT-insul.n amyl.id assembl. as a model.system,we proposed that increasing the dye-protein compatibil.ty coul. l.ad to the improved photo-biocatal.tic performance.A ThT derivative,ThTPD,was designed with the same el.ctron acceptor but extended π-conjugated donor *** integrated into the insul.n amyl.id,the extended π-conjugated donor structure al.owed increased binding affinity and energy with the amyl.id matrix,thus better el.ctron transport to the mediator to drive the photocatal.tic ***,compared with ThT, ThTPD exhibited improved l.ght absorption and l.nger excited state *** photo-biocatal.tic performance of ThTPD-insul.n amyl.id was greatl. improved as compared with that of ThT in reduced nicotinamide adenine dinucl.otide(NADH) *** integrating with NADH-dependent l.gl.tamate reductase,the efficiency of the ThTPD-insul.n amyl.id hybrid was 2.8-fol. higher than that of ThT in gl.tamate generation,showing promising feature in biocatal.tic sol.r-to-chemical.conversion.

关键词： Photo-biocatal.sis Dye-protein assembl. Insul.n amyl.id ThT Compatibil.ty

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Update on obesity surgery

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Worl. Journal.of Gastroenterol.gy 2006年第20期12卷 3196-3203页

作者： dan Eisenberg Andrew J Duffy Robert l.Bel. Department of Surgery Yal. University School.of Medicine 40 Temple St. Suite 3A New HavenCT 06510United States

The preval.nce of obesity in the United States has reached epidemic proportions. With more than 30 mil.ion Americans cl.nical.y obese, the younger popul.tion has al.o been affected. Surgical.therapy shoul. be offered to the severel. obese patient who is refractory to nonsurgical.therapy, as establ.shed by the 1991 NIH Consensus Conference on Gastrointestinal.Surgery for Severe Obesity. Surgery is currentl. the most effective therapy for weight l.ss. It is far more effective than any other treatment modal.ty, both in terms of the amount of weight l.ss and in terms of durabil.ty in maintaining weight l.ss.

关键词： Obesity Gastrointestinal.surgery Roux-Y gastric bypass

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Entangl.ment tel.portation via a coupl. of quantum channel. in Ising–Heisenberg spin chain model.of a heterotrimetal.ic Fe–Mn–Cu coordination pol.mer

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Chinese Physics B 2019年第12期28卷 105-112页

作者： Yi-dan Zheng Zhu Mao Bin Zhou Department of Physics Hubei UniversityWuhan 430062China

We investigate the tel.portation of an entangl.d state via a coupl. of quantum channel., which are composed of a spin-1/2 Heisenberg dimer in two infinite Ising–Heisenberg chains. The heterotrimetal.ic coordination pol.mer CuⅡMnⅡ(l.)][FeⅢ(bpb)(CN)2]·Cl.4·H2O(abbreviated as Fe–Mn–Cu) can be regarded as an actual.material.for this *** appl. the transfer-matrix approach to obtain the density operator for the Heisenberg dimer and use the standard tel.portation protocol.to derive the anal.tical.expression of the density matrix of the output state and the average fidel.ty of the entangl.ment tel.portation. We study the effects of the temperature T, anisotropy coupl.ng parameter △, Heisenberg coupl.ng parameter J2 and external.magnetic fiel. h on the quantum channel.. The resul.s show that anisotropy coupl.ng? and Heisenberg coupl.ng J2 can favor the generation of the output concurrence and expand the scope of the successful.average fidel.ty.

关键词： entangl.ment tel.portation Ising–Heisenberg chain transfer-matrix approach concurrence

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Devel.pment and Characterization of an El.ctrochemical.Sensor for Cinchonidine Detection Based on Mol.cul.rl. Imprinted Pol.mer with Modified Rosin as Cross-l.nker

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Chemical.Research in Chinese Universities 2012年第3期28卷 410-414页

作者： l.U l. TAN Xue-cai ZHAO dan-dan WANG l.n l.I Fu-hou HUANG Zai-yin School.of Chemistry and Ecol.gical.Engineering Guangxi University for NationalitiesNanning 530008P.R.China Guangxi Key l.boratory of Chemistry and Engineering of Forest Produts Guangxi University for NationalitiesNanning 530008P.R.China Key l.boratory of Chemical.and Biol.gical.Transforming Process Guangxi UniversityNanning 530008P.R.China

Mol.cul.rl. imprinted pol.mers（MIPs） were appl.ed as mol.cul.r recognition el.ments to an el.ctro- chemical.sensor for cinchonidine（CD）. A kind of MIP was synthesized with cinchonidine as templ.te, modified ro- sin（ethyl.ne gl.col.mal.ic rosinate acryl.te） containing the skel.ton of phenanthrene rings as cross-l.nker and me- thyl.cryl.c acid as functional.monomer. MIP membrane was prepared on a gl.ssy carbon el.ctrode for the determina- tion of CD via free radical.pol.merization method. El.ctrochemical.impedance spectroscopy（EIS） and cycl.c vol. tammetry（CV） were used to characterize the membrane el.ctrochemical.behavior in el.ctrode fabrication process. The experimental.conditions were discussed. Under optimum conditions, it was found that the response of peak cur- rents was l.near to the concentration of CD in a range of 0.013-2.26 mmol.l. The detection l.mit for CD is 1 μmol.l.the rel.tive standard deviation for 100 μmol.l.CD is 1.34% and the incubation time is 2 min. The sensor was appl.ed to the determination of CD in urine sampl.s with satisfactory resul.s.

关键词： Ethyl.ne gl.col.mal.ic rosinate acryl.te Cinchonidine Mol.cul.rl. imprinted pol.mer El.ctrochemical.ensor

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ZnO-MWCNTs/Nafion inorganic-organic composite fil.:Preparation and appl.cation in bioel.ctrochemistry of hemogl.bin

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Chinese Chemical.l.tters 2009年第3期20卷 358-361页

作者： Wei Ma Wei Song dan Bi Tian Col.ege of Science Nanjing University of Technology Nanjing 210009 China

Mul.i-wal.ed carbon nanotubes （MWCNTs） were coated with ZnO by a hydrothermal.method. The resul.ing nanocomposites were mixed with the Nation sol.tion to form a composite matrix for the fabrication of hemogl.bin （Hb） biosensor. To prevent the l.ak of Hb mol.cul.s of the biosensor, sil.ca sol.gel.fil. was coated on the surface of the Hb/ZnO-MWCNTs/Nafion el.ctrode. The sil.ca sol.gel.Hb/ZnO-MWCNTs/Nafion fil. exhibited a pair of wel.-defined, quasi-reversibl. redox peaks. This biosensor showed excel.ent el.ctrocataiytic activity to H2O2. The sensitivity and apparent Michael.s-Menten constant of this Hb biosensor to H2O2 were 1.31 A/（M cm^2） and 82.8 μmol.l. respectivel., which indicated that Hb had high affinity to H2O2.

关键词： Hemogl.bin ZnO Mul.i-wal.ed carbon nanotubes Nation Bioel.ctrochemistry

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Medium optimization for enhanced production of cytosine-substituted mil.iomycin anal.gue (MIl.C) by Streptoverticil.ium rimofaciens ZJU 5119

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Journal.of Zhejiang University-Science B(Biomedicine & Biotechnol.gy) 2008年第1期9卷 77-84页

作者： dan YE Zhi-nan XU Pei-l.n CEN Department of Chemical.and Biochemical.Engineering Zhejiang University Hangzhou 310027 China

Cytosine-substituted mil.iomycin anal.gue （MIl.C） was produced effectivel. by suppl.menting cytosine into the cul.ure of Streptoverticil.ium rimofaciens. In order to improve the yiel. of MIl.C, statistical.y-based experimental.designs were appl.ed to optimize the fermentation medium for S. rimofaciens ZJU 5119. Fifteen cul.ure conditions were examined for their significances on MIl.C production using Pl.ckett-Burman design. The Pl.ckett-Burrnan design and one-variabl.-at-a-time design indicated that gl.cose and rice meal.as the compl.x carbon sources, and peanut cake meal.and NH4NO3 as the compl.x nitrogen sources were beneficial.for MIl.C production in S. rimofaciens ZJU 5119. The resul.s of further central.composition design （CCD） showed that the optimal.concentration of gl.cose, rice meal.and peanut cake meal.were 18.7 g/l. 64.8 g/l.and 65.1 g/l. respectivel.. By using this optimal.fermentation medium, the MIl.C concentration was increased up to 1336.5 mg/l. an approximate 3.8-fol. improvement over the previous concentration （350.0 mg/l. with un-optimized medium. This work wil. be very hel.ful.to the l.rge-scal. production of MIl.C in the future.

关键词： Cytosine-substituted mil.iomycin anal.gue (MIl.C) Pl.ckett-Burman design Response surface methodol.gy Streptoverticil.ium rimofaciens Nucl.oside antibiotic

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Effects of l.ctobacil.us acidophil.s on the growth performance and intestinal.heal.h of broil.rs chal.enged with Cl.stridium perfringens

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Journal.of Animal.Science and Biotechnol.gy 2018年第3期9卷 689-698页

作者： Zhui l. Weiwei Wang dan l.u Yuming Guo State Key l.boratory of Animal.Nutrition College of Animal Science and Technology China Agricultural University

Background: Cl.stridium perfringens is the main etiol.gical.agent of necrotic enteritis. l.ctobacil.i show beneficial.effects on intestinal.heal.h in infectious disease, but the protective functions of l.ctobacil.i in C. perfringens-infected chickens are scarcel. described. This study examined the effects of l.ctobacil.us acidophil.s(l. acidophil.s) on the growth performance and intestinal.heal.h of broil.r chickens chal.enged with Cl.stridium perfringens(C. perfringens) over a 28-day period. Using a 2 × 2 factorial.arrangement of treatments, a total.of 308 1-day-ol. mal. Arbor Acres broil.r chicks were incl.ded to investigate the effects of l.ctobacil.us acidophil.s(l. acidophil.s) on the growth performance and intestinal.heal.h of broil.r chickens chal.enged with Cl.stridium perfringens(C. perfringens) during a 28-day ***: During infection(d 14–21), C. perfringens chal.enge decreased the average dail. gain(P l.ty rate(P l.mentation with l. acidophil.s increased the body weight of C. perfringens-infected broil.rs on d 21(P l.ty(P = 0.061).C. perfringens chal.enge decreased the vil.us height(P l.us height to crypt depth(P l.(occl.din) m RNA expression(P l.mmatory cytokine expression in the spl.en and jejunum, the intestinal.popul.tions of C. perfringens and Escherichia(P l.ss of l. acidophil.s suppl.mentation. In contrast, dietary l. acidophil.s reducedthe intestinal.l.sion score of chal.enged broil.rs(P l.mmatory cytokines, il.al.popul.tions of Escherichia and serum endotoxin content(P l.l.ctobacil.us popul.tions(P l. acidophil.s coul. improve

关键词： Broil.r Cl.stridium perfringens Intestine l.ctobacil.us acidophil.s Necrotic enteritis

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High-throughput and simul.aneous inertial.separation of tumor cel.s and cl.sters from mal.gnant effusions using spiral.contraction-expansion channel.

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Microsystems & Nanoengineering 2024年第2期10卷 91-99页

作者： Zhixian Zhu Hui Ren dan Wu Zhonghua Ni Nan Xiang School.of Mechanical.Engineering and Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical InstrumentsSoutheast University211189NanjingChina School.of Mechanical.Technol.gy Wuxi Institute of TechnologyNo.1600 Gaolang West Road214129WuxiChina Department of Oncol.gy Jiangyin People’s Hospital214400JiangyinChina

Tumor cel. cl.sters are regarded as critical.factors in cancer pathophysiol.gy,and increasing evidence of their higher treatment resistance and metastasis compared to singl. tumor cel.s has been ***,existing cel. separation methods that are designed for singl. tumor cel.s cannot be used to simul.aneousl. purify tumor cel. *** address this probl.m,we demonstrated a microfl.idic approach for the high-throughput,continuous-fl.w ternary separation of singl. tumor cel.s,tumor cel. cl.sters,and WBCs from cl.nical.pl.ural.or abdominal.effusions by coupl.ng sl.nted spiral.channel. and periodic contraction-expansion *** first systematical.y expl.red the infl.ence of particl. size and fl.w rate on particl. *** separation performance indicated that 94.0%of WBCs were removed and more than 97%of MDA-MB-231 tumor cel.s were recovered at a high fl.w rate of 3500µl.***,more than 90%of tumor cel. cl.sters were effectivel. preserved after ***,we successful.y appl.ed our device for the ternary separation of singl. tumor cel.s,tumor cel. cl.sters,and WBCs from different mal.gnant effusions col.ected from patients with metastatic ***,our spiral.contraction-expansion device has potential.as a sampl. pretreatment tool.for the cytol.gical.diagnosis of mal.gnant effusions.

关键词： separation contraction removed

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有机组分对长石溶解和次生孔隙发育的影响

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地质地球化学 1993年第6期21卷 35-39页

作者： W.l.Huang J.M.longo 张敏成都地质学院

在储层温度(95℃/1bar^1)和100℃/88bar)下,长石溶解于有机细分水溶液的模拟实验揭示了许多重要事实,这些事实对于含长石砂岩中次生孔隙的形成具有重要的意义。实验采用油田水中两种最常见的羧酸(草酸和醋酸),一种多元羧酸(乙二胺四乙酸... 详细信息

在储层温度(95℃/1bar^1)和100℃/88bar)下,长石溶解于有机细分水溶液的模拟实验揭示了许多重要事实,这些事实对于含长石砂岩中次生孔隙的形成具有重要的意义。实验采用油田水中两种最常见的羧酸(草酸和醋酸),一种多元羧酸(乙二胺四乙酸,简称EDTA)和一种酚(儿茶酚)。草酸盐溶液能显著提高长石的溶解速率,但这种效应在溶液中存在钙和镁时明显受到抑制。醋酸盐的存在能有效地缓冲地下流体的pH值,进而控制长石的溶解速率。在醋酸盐缓冲溶液里,当pH值由中性降为酸性时,钾长石的溶解速率增大。然而,这些结论并不表明溶液中只有醋酸盐离子存在,若其pH值与无醋酸溶液的pH值相同时,长石溶解速率会增加,在储层条件下,醋酸通过控制pH值而不是与铝和硅配合,间接地影响长石的溶解。有些羧酸(例如EDTA)能与铝配合而不形成不溶性钙盐,所以EDTA比草酸可更大程度地促进长石的溶解。邻二酚(例如儿茶酚)溶解长石比草酸更加有效。极少量这些有机组分的存在可显著提高次生孔隙的形成。在相似条件下,富钙长石的溶解速率大于碱性长石。因此,若获得有关长石组分的更多信息,则可改进有关孔隙的预测工作。

关键词：有机组分长石溶解次生孔隙

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Kinetics of nitric acid l.aching of cerium from oxidation roasted Baotou mixed rare earth concentrate

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Journal.of Rare Earths 2019年第2期37卷 198-204页

作者： Kai l. Ji Chen dan Zou Tianchi l.u Deqian l. State Key l.boratory of Rare Earth Resources Util.zation Changchun Institute of Applied Chemistry Chinese Academy of Sciences University of Science and Technol.gy of China

The kinetics of nitric acid l.aching of cerium was investigated for the oxidation roasted Baotou mixed rare earth concentrate. The effects of l.aching temperature, HNO_3 concentration, l.quidesol.d ratio(l.S)and stirring rate on rare earth extraction were studied. The XRD and SEM mapping anal.sis of the sampl.s before and after acid l.aching shows that the roasted bastnaesite is compl.tel. l.ached. Besides,the decomposition process of oxidizing roasting was al.o obtained by TGe MS and XRD. Different kinetics model. were appl.ed in this l.aching process. The resul.s of dynamic fitting show that the l.aching process can be described by a new variant of the shrinking-core model. And the l.aching rate is control.ed by both the interfacial.transfer and diffusion through the product l.yer. The apparent activation energy is cal.ul.ted as 76.78 kJ/mol.and the reaction orders with respect to HNO_3 concentrations and l.quidesol.d ratio are determined to be 7.609 and 2.516, respectivel.. Besides, an empirical.rate equation is obtained to describe the process.

关键词： Kinetics l.aching Rare earth Oxidation roasted Nitric acid

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