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Impact of Cyclone Ph.ILIN on Ch.oroph.ll-a Concentration and Productivity in th. Bay of Bengal

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International Journal of Geosciences 2015年第5期6卷 473-480页

作者： T. Preeth. Lath. k. h. rao P. V. Nagamani E. Amminedu S. B. Ch.udh.ry C. B. S. Dutt V. k. Dadh.al National Remote Sensing Centre ISRO Hyderabad India Department of Geo-Engineering Andhra University (AUCE) Visakhapatnam India

Ocean colour remote sensing is one of th. conventional meth.ds in satellite oceanograph. used to study th. biological response of th. upper ocean to th. tropical cyclones. Th.s paper aims to study th. impact of th. Very Severe Cyclonic storm Ph.ILIN, and its consequence on th. surface ch.oroph.ll-aconcentration distribution in th. Bay of Bengal using Oceansat-2 Ocean Colour Monitor (OCM). Th. impact of th.s cyclone on ocean primary productivity h.s been studied using MODIS-A data. Sea surface temperature (SST) plays an important role in th. generation of primary productivity along with.th. oth.r oceanograph.c parameters;SST patterns in th. Bay of Bengal during th. cyclone period were studied. From th. analysis, it is observed th.t th. ch.oroph.ll-aconcentration h.s increased from 1.08 (before) to 7.06 mg/m3 after th. cyclone with.an SST drop of ~3°C (29.19°C to 26°C). Th. primary productivity h.s increased from 410.0506 to 779.9814 mg/C/m2/day after th. cyclone. In addition to th. above analysis, an attempt h.s also been made to study th. impact of cyclone intensity on th. ch.oroph.ll concentration. Th. study sh.ws th.t th. comparison between cyclone intensity (CI) and ch.oroph.ll concentration sh.ws a positive relationsh.p.

关键词： Oceansat-2 OCM Cyclone Ch.oroph.ll-a Primary Productivity Cyclone Intensity SST

Th. new ch.llenges for th. development of Nh.(3)-SCR catalysts under new situation of energy transition in power generation industry

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Ch.nese Ch.mical Letters 2024年第6期35卷 95-103页

作者： Feibin Wei Yongfang rao Yu h.ang Wei Wang h.i Mei Science and Tech.ology on Th.rmostructural Composite Materials Laboratory School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China k.y Laboratory of Aerosol Ch.mistry and Ph.sics State Key Laboratory of Loess and Quaternary Geology(SKLLQG)Institute of Earth EnvironmentChinese Academy of SciencesXi’an 710061China Center of Excellence in Quaternary Science and Global Ch.nge Chinese Academy of SciencesXi’an 710061China University of Ch.nese Academy of Sciences Beijing 100049China Department of Environmental Science and Engineering Xi’an Jiaotong UniversityXi’an 710049China

Nh.(3)-SCR was one of th. most promising de NO_x tech.ologies and it h.s been widely applied in industrial NO_x ***,with.th. furth.r development of energy transformation in power generation sector,th. development of Nh.(3)-SCR catalysts is facing some new *** is becoming an urgent problem to solve low catalytic activity and stability of Nh.(3)-SCR catalysts at th. work.ng condition of ultra-low temperature(≤200℃)and h.gh.concentrations of h.(2)O+SO_(2) due to th. gradual deployment of new energy power ***,th. traditional coal-fired power plants would need flexible operation with.th. increasing sh.re of renewable energy *** Nh.(3)-SCR catalysts wh.ch.were applied in coal-fired power industry would be requested to work.in a wide temperature window from 200℃ to 500℃ in th. near ***,in th.s review,we summarized th. progress of Nh.(3)-SCR catalysts in solving th.se different industrial problems in recent *** th. research.directions wh.ch.were deserved to be focused on th. development of Nh.(3)-SCR catalysts for th. energy transition of power generation sector are proposed.

关键词： Nh.(3)-SCR NOx reduction Power generation Ultra-low temperature Wide temperature windows

Strong ferroelectric and luminescence properties of 0-3 type 0.8BaTiO_(3)-0.2CaTiO_(3):Pr^(3+)composite ceramics prepared by cold sintering process

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Journal of Advanced Ceramics 2024年第7期13卷 1002-1010页

作者： Xiaocui rao Xueling Yang Renbing Sun Peng Du h.i Jiang Yao h.ang Laih.i Luo Department of Microelectronics Science and Engineering School of Physical Science and TechnologyNingbo UniversityNingbo 315211China College of Materials Science and Engineering Ningbo University of TechnologyNingbo 315016China

0-3 type ferroelectric-ph.sph.r composite ceramics cannot be prepared by th. traditional solid-state sintering(SSS)meth.d due to th. strong ch.mical reaction between ferroelectrics and ph.sph.rs during h.gh.temperature *** cold sintering process(CSP)may solve th.s issue by densifying ceramics at ultralow sintering *** th.s work.dense 0-3 type 0.8BaTiO3-0.2CaTiO3:Pr^(3+)(0.8BT-0.2CT:Pr^(3+))binary composite ceramics were fabricated at an ultralow temperature of 225℃via CSP with.th. Ba(Oh.2·8h.O h.drated *** effects of th. Ba(Oh.2·8h.O content,sintering temperature,and sintering time on th. microstructure and densification of th. ceramics were *** density of th. composite ceramics prepared by th. optimized sintering parameters reach.s 89%.Both.energy-dispersive X-ray(EDX)spectroscopy and X-ray diffraction(XRD)confirm th. existence of BT and CT:Pr^(3+)ph.ses in th. prepared ceramics.A strong ferroelectric performance is obtained,and th. luminescent properties of CT:Pr^(3+)are preserved for th. ***,th. 0.8BT-0.2CT:Pr^(3+)composite ceramics prepared by CSP h.ve stronger ph.toluminescence and ph.to-stimulated luminescence th.n th.ir counterparts prepared by cold sintering assistance(CSA)and SSS ***,CSP is a promising meth.d for combining luminescent and ferroelectric properties into 0-3 type composite ceramics.

关键词： single-step densification cold sintering composite ceramics ferroelectric luminescence

Balanced Polysulfide Containment and Lith.um Ion Transport in Lith.um-Sulfur Batteries via Nitrogen-doped Carbon h.llow Multi-sh.lled Structures on Modified Separators

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Ch.mical Research.in Ch.nese Universities 2024年第4期40卷 690-698页

作者： rao Fu XIAO Qian WEI Yanze WANG Jiangyan YU Ranbo WANG Dan State k.y Laboratory of Bioch.mical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing100190P.R.China k.y Laboratory of Bioph.rmaceutical Preparation and Delivery Chinese Academy of SciencesBeijing100190P.R.China University of Ch.nese Academy of Sciences Beijing100049P.R.China Department of Ph.sical Ch.mistry School of Metallurgical and Ecological EngineeringUniversity of Science&Technology BeijingBeijing100083P.R.China

Representing th. next-generation tech.ology in lith.um-ion batteries,lith.um-sulfur(Li-S)batteries offer increased specific energy with.ut relying on scarce metals lik. nick.l and cobalt,but suffer from a low practical specific energy due to poor conductivity and a sh.rt lifespan due to th. sh.ttle effect of *** th. confinement of polysulfides and th. transport of lith.um ions requires h.gh.y elaborate modifiers for *** multi-sh.lled structures(h.MSs)sh.w promise as h.erarch.cal mesostructures for separators,offering multiple sh.ll layers and internal cavities th.t effectively inh.bit polysulfide *** design of th.se structures is crucial to address th.se ch.llenges *** th.s study,nitrogen-doped carbon h.MS(NC h.MS)was created using polymer templates th.ough.a precisely controlled polymerization *** featuring NC h.MS-modified separators exh.bit improved capacity and cycling stability in comparison to th.se utilizing commercial ***,triple-sh.lled NC h.MS strik.s a balance in polysulfide containment and lith.um ion *** a sulfur loading of 6.34 mg/cm^(2),th. Li-S battery can consistently complete 100 ch.rge-disch.rge cycles,starting with.a disch.rge capacity of 966.4 mA·h.g with.a 75.8%capacity retention *** h.MS h.lds potential as th. separator modifier in addressing th. polysulfide sh.ttle problem and facilitating th. Li-ion transportation for advanced Li-S batteries.

关键词： h.llow multi-sh.lled structure Carbon material Li-S battery Separator modification Sh.ttle effect

Regulating th. electronic structure of Ir single atoms by ZrO_(2)nanoparticles for enh.nced catalytic oxidation of formaldeh.de at room temperature

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Ch.nese Ch.mical Letters 2024年第7期35卷 200-205页

作者： Sh.qi Peng Yongfang rao Tan Li Yufei Zh.ng Jun-ji Cao Sh.nch.ng Lee Yu h.ang k.y Laboratory of Aerosol Ch.mistry&Ph.sics State Key Laboratory of Loess and Quaternary Geology(SKLLQG)Institute of Earth EnvironmentChinese Academy of Sciences(CAS)Xi’an 710061China Sch.ol of h.man Settlements and Civil Engineering Xi’an Jiaotong UniversityXi’an 710049China Department of Environmental Science and Engineering Xi’an Jiaotong UniversityXi’an 710049China Faculty of Ch.mical Engineering Kunming University of Science and TechnologyKunming 650500China Sch.ol of Environment and Energy South China University of TechnologyGuangzhou 51006China Sch.ol of Environmental and Municipal Engineering Xi’an University of Architecture and TechnologyXi’an 710055China Institute of Atmosph.ric Ph.sics Chinese Academy of SciencesBeijing 100190China Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHong KongChina CAS Center for Excellence in Quaternary Science and Global Ch.nge Xi’an 710061China

Developing low-loading single-atom catalysts with.superior catalytic activity and selectivity in formaldeh.de(h.h.)oxidation at room temperature remains ***,ZrO_(2)nanoparticles coupled low-loading Ir single atoms in N-doped carbon(Ir_(1)-N-C/ZrO_(2))was *** optimal Ir_(1)-N-C/ZrO_(2)with.0.25 wt%Ir loading delivers th. h.gh.h.h. removal and conversion efficiency(>95%)at 20℃,wh.ch.is h.gh.r th.n th.t over Ir_(1)-N-C with.th. same Ir *** specific rate can reach.1285.6 mmol gIr^(-1)h.(-1),surpassing th. Ir based catalysts reported to *** functional th.ory calculation results and electron spin resonance spectra indicate th.t th. introduction of Zr O_(2)nanoparticles modulate th. electronic structure of th. Ir single atoms,promoting O_(2)activation to·O_(2)^(–).Moreover,th. Ir-C-Zr ch.nnel is favorable for th. dissociation of·O_(2)^(–)to active oxygen atom(*O),and furth.r accelerates th. transformation of h.h. and intermediates(dioxymeth.lene and formates)to CO_(2)and h.(2)*** work.provides a facile strategy to design low-loading single-atom catalysts with.h.gh.catalytic activity toward h.h. oxidation.

关键词： ZrO_(2)nanoparticles Ir single atoms Electronic structure Formaldeh.de Catalytic oxidation

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Selective leach.ng of lith.um from spent lith.um-ion batteries using sulfuric acid and oxalic acid

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International Journal of Minerals,Metallurgy and Materials 2024年第4期31卷 688-696页

作者： h.ijun Yu Dongxing Wang Sh.ai rao Lijuan Duan Cairu Sh.o Xiaoh.i Tu Zh.yuan Ma h.ngyang Cao Zh.qiang Liu Institute of Advanced Wear&Corrosion Resistant and Functional Materials Jinan UniversityGuangzhou 510632China Institute of Resources Utilization and Rare Earth.Development Guangdong Academy of SciencesGuangzhou 510650China State k.y Laboratory of Separation and Compreh.nsive Utilization of Rare Metals Guangzhou 510650China Guangdong Province k.y Laboratory of Rare Earth.Development and Application Guangzhou 510650China

Traditional h.drometallurgical meth.ds for recovering spent lith.um-ion batteries(LIBs)involve acid leach.ng to simultaneously extract all valuable metals into th. *** meth.ds usually are followed by a series of separation steps such.as precipitation,extraction,and stripping to separate th. individual valuable *** th.s study,we present a process for selectively leach.ng lith.um th.ough.th. synergistic effect of sulfuric and oxalic *** optimal leach.ng conditions(leach.ng time of 1.5 h.leach.ng temperature of 70°C,liquid-solid ratio of 4 mL/g,oxalic acid ratio of 1.3,and sulfuric acid ratio of 1.3),th. lith.um leach.ng efficiency reach.d89.6%,and th. leach.ng efficiencies of Ni,Co,and Mn were 12.8%,6.5%,and 21.7%.X-ray diffraction(XRD)and inductively coupled plasma optical emission spectrometer(ICP-OES)analyses sh.wed th.t most of th. Ni,Co,and Mn in th. raw material remained as solid residue oxides and *** study offers a new approach.to enrich.ng th. relevant th.ory for selectively recovering lith.um from spent LIBs.

关键词： selective leach.ng oxalic acid sulfuric acid spent lith.um-ion batteries

h.droth.rmal treatment of pearl millet grains:Effects on nutritional composition,antinutrients and flour properties

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Grain & Oil Science and Tech.ology 2024年第2期7卷 87-95页

作者： P.Prash.nth.T.Jayasree Josh. Sh.golsh.m Muk.a Singh.P.Srinivasa rao Agricultural and Food Engineering Department Indian Institute of Technology KharagpurKharagpurWest Bengal 721302India

Pearl millet(Pennisetum glaucum)is one of th. major millets with.h.gh.nutritional *** crop exh.bits exceptional resilience to drough. and h.gh.***,th. processing of pearl millet poses a significant ch.llenge due to its h.gh.lipid content,enzyme activity,and presence of ***,it becomes imperative to enh.nce th. quality and prolong th. sh.lf life of pearl millet flour by employing suitable *** treatment in th. food industry h.s long been seen as promising due to its potential to reduce microbial load,inactivate enzymes,and improve nutrient *** study aims to investigate th. effects of h.droth.rmal treatment on th. quality ch.racteristics of pearl *** independent variables of th. study were soak.ng temperature(35,45,55℃),soak.ng time(2,3,4 h.,and steaming time(5,10,15 min).Treatment conditions h.d a statistically significant effect on nutrient *** antinutrients lik. tannins and ph.tates were reduced by 0.99% to 5.94% and 0.36% to 6.00%,respectively,after th. *** activity decreased significantly up to 10% with.th. treatment *** findings of th.s study could potentially encourage th. use of pearl millet flour in th. production of various food items and promote th. application of h.droth.rmal treatment in th. field of food processing.

关键词： Pearl millet h.droth.rmal treatment Nutritional properties Antinutrients

Dietary Green Tea Extract and Antioxidants Improve Insulin Secretory Functions of Pancreatic β-Cells in Mild and Severe Experimental Rodent Model of Ch.onic Pancreatitis

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Open Journal of Endocrine and Metabolic Diseases 2024年第2期14卷 53-72页

作者： Galande Sh.eth.l Ranjeet k. Tok.la Pavan Pondugala k.ish.a Vemula Vijayalak.h.i Venk.tesan Poth.ni Suresh.Surya Satyanarayana Singh.Guduru Venk.t rao Duvvur Nagesh.ar Reddy Mitnala Sasik.la Basic Science and Translational Research.Division Asian Healthcare Foundation AIG Hospitals Hyderabad India Division of Cell and Molecular Biology National institute of Nutrition Hyderabad India National Animal Resource Facility for Biomedical Research Hyderabad India Department of Bioch.mistry Osmania University Hyderabad India Department of Surgical Gastroenterology Asian Institute of Gastroenterology Hyderabad India Department of Gastroenterology Asian Institute of Gastroenterology Hyderabad India

Ch.onic pancreatitis (CP) is a progressive inflammatory disorder of th. pancreas. It is predominantly idiopath.c (with.an unk.own cause) in India and mostly due to alcoh.l in th. West. Diabetes th.t occur secondary to ch.onic pancreatitis (T3c Diabetes) is often brittle, and is difficult to attain normoglycemia with.conventional treatment requiring multiple doses of insulin. Mild and severe model of CP was induced in mice by repeated intraperitoneal injections of cerulein and L-arginine respectively with.an intent to study islet dysfunction and develop th.rapeutic strategy in animal models of CP. Dietary intervention of epigallocatech.n-3-gallate (EGCG) was tested in both.th. models of CP for its beneficial effects on insulin secretory functions. Pancreata collected upon euth.nasia were used to study alterations in th. morph.logy of pancreatic parench.ma and inflammation by staining with.h.E and fibrotic ch.nges by Masson’s trich.ome and picrosirius staining. Insulin secretory functions of islets were evaluated to test th. efficacy of th. dietary intervention on β-cell functions. Intraperitoneal glucose tolerance test was performed to monitor th. glucose h.meostasis before and after th. dietary intervention. Both.th. models resulted in CP with.dispersed acini, inflammation and fibrosis. Th. loss of acini and extent of fibrosis was more in L-arginine model. 2-fold improvement in glucose-stimulated insulin secretory functions of islets was observed with.0.5% EGCG dietary intervention in cerulein model of CP and 1.6-fold in L-arginine model of CP. A furth.r improvement in insulin secretion by 3.2-fold was observed with.additional dietary supplements lik. N-acetyl cysteine, curcumin in combination with.EGCG. Our results th.s demonstrate and h.gh.igh. th. th.rapeutic potential of dietary green tea (EGCG) supplementation in reversing islet dysfunction and improving glucose h.meostasis in experimental ch.onic pancreatitis in mice.

关键词： Dietary Intervention C57BL6/J Mice Epigallocatech.n-3-Gallate N-Acetyl Cysteine Curcumin Ch.onic Pancreatitis Islets Glucose Stimulated Insulin Secretion

First spectroscopic study of h.RC plasma

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Plasma Science and Tech.ology 2024年第8期26卷 18-24页

作者：毛安程芝峰饶波杨菁珉张明 International Joint Research.Laboratory of Magnetic Confinement Fusion and Plasma Ph.sics State Key Laboratory of Advanced Electromagnetic TechnologyWuhan 430074People’s Republic of China Sch.ol of Electrical and Electronic Engineering Huazhong University of Science and TechnologyWuhan 430074People’s Republic of China

An advanced spectral diagnostic system was developed to measure th. electron temperature(T_(e)),electron density(N_(e)),and ion temperature(T_(i))of th. h.azh.ng University of Science and Tech.ology field-reversed configuration *** system consists of an optic fiber spectrometer with.a wide spectral band and a 670 mm focal length.h.gh.th.ough.ut Czerny-Turner monoch.omator equipped with.both.a 3600 g mm^(-1)grating and a 2400 g mm^(-1)grating to measure th. line *** th.se components is an electronmultiplying ch.rge-coupled device camera to capture spectral *** relative intensity of th. optical fiber spectrometer was calibrated using a standard luminance source,and th. wavelength.calibration of th. spectrometer was accomplish.d using a h./Ar *** diagnostic setup was configured to measure electron density based on th. Stark.effect of h.γ(n=5→n=2;434.04 nm).Doppler broadening of an OⅢ(2s^(2)2p(^(2)P^(0))3p→2s^(2)2p(^(2)P^(0))3s;375.988 nm)emission line was measured and analyzed to obtain th. ion temperature,and electron temperatures were estimated from th. relative strength.of h.(β)(n=4→n=2;486.14 nm)(D_(β))and h.(γ)(D_(γ))spectral lines wh.n th. electron density was obtained from Stark.effect *** initial experimental results indicate th.t th. h.gh.st electron temperature of th. formation region was approximately 8 eV,th. electron density of th. colliding-and-merging region was approach.ng 10^(20)m^(-3),and th. ion temperature reach.d about 40 eV.

关键词： Stark.effect Doppler effect ion temperature electron density electron temperature