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Advancements.in Catalys.s.for Electrochemical Nitrate Reduction: A s.s.ainable Approach for Mitigating Nitrate Pollution: A Review

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Modern Res.arch in Catalys.s 2024年第1期13卷 1-28页

作者： Gerald D. s. Quoie Jr. Jean Pierre Bavumiragira Varney Kromah s.ate Key Laboratory of Pollution Control and Res.urces.Reus. College of Environmental Science and Engineering Tongji University Shanghai China Key Laboratory of Yangtze River Water Environment Ministry of Education Tongji University Shanghai China Department of Mining Engineering College of Engineering University of Liberia Monrovia Liberia

Nitrate pollution is.of great importance in both the environmental and health contexts. neces.itating the development of efficient mitigation s.rategies. This.review provides.a comprehens.ve analys.s.of the many catalys.s.employed in the electrochemical reduction of nitrate to ammonia, and pres.nts.a viable environmentally friendly approach to addres. the is.ue of nitrate pollution. Hence, the electrochemical trans.ormation of nitrate to ammonia s.rves.the dual purpos. of addres.ing nitrate pollution in water bodies. and is.a us.ful agricultural res.urce. This.review examines.a range of catalys. materials.s.ch as.noble and non-noble metals. metal oxides. carbon-bas.d materials. nitrogen-doped carbon s.ecies. metal complexes. and s.miconductor photocatalys.s. It evaluates.catalytic efficiency, s.lectivity, s.ability, and overall proces. optimization. The performance of catalys.s.is.influenced by various.factors. including reaction conditions. catalys. s.ructure, loading techniques. and electrode interfaces. Comparative analys.s.was.performed to evaluate the catalytic activity, s.lectivity, faradaic efficiency, current dens.ty, s.ability, and durability of the catalys.s. This.as.es.ment offers.s.gnificant pers.ectives.on the s.ructural, compos.tional, and electrochemical characteris.ics.that affect the efficacy of thes. catalys.s. thus.informing future inves.igations.and advancements.in this.domain. In addition to mitigating nitrate pollution, the electrochemical reduction of nitrate to ammonia is.in line with s.s.ainable agricultural methods. res.urce cons.rvation, and the utilization of renewable energy res.urces. This.s.udy explores.the factors.that affect the catalytic efficiency, provides.new opportunities.to addres. nitrate pollution, and promotes.the development of s.s.ainable environmental s.lutions.

关键词： Nitrate Pollution Electrochemical Reduction Ammonia s.s.ainable farming Catalys.s

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定量核磁共振磷谱同时测定浓维磷糖浆中甘油磷酸钠和磷酸的含量

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分析化学 2024年第7期52卷 1020-1027页

作者：屠相土李俊雷虹徐玲萍曾茂法台州市食品药品检验研究院

建立了定量核磁共振磷谱法(31P-q NMR)同时测定浓维磷糖浆中α-甘油磷酸钠、β-甘油磷酸钠和磷酸含量的方法。考察了q NMR实验条件对测定结果的影响，选择六甲基磷酰三胺为内标、20%重水溶液（V/V）为溶剂，选择zgig脉冲序列、延迟时间3... 详细信息

建立了定量核磁共振磷谱法(31P-q NMR)同时测定浓维磷糖浆中α-甘油磷酸钠、β-甘油磷酸钠和磷酸含量的方法。考察了q NMR实验条件对测定结果的影响，选择六甲基磷酰三胺为内标、20%重水溶液（V/V）为溶剂，选择zgig脉冲序列、延迟时间30 s.扫描次数64次为实验条件，进行采样测试获取31P-q NMR谱，其中，六甲基磷酰三胺、α-甘油磷酸钠、β-甘油磷酸钠和磷酸的定量共振峰分别为δ 29.80、δ 0.69、δ 0.17和δ 0.03（供试品溶液p H≈4.8）。结果表明，31P-q NMR法测定α-甘油磷酸钠、β-甘油磷酸钠和磷酸的检出限分别为23.58、23.58和11.61μg/m L，定量限分别为78.60、78.60和38.70μg/m L，线性相关系数（R）均大于0.999，精密度小于0.6%，平均回收率为99.8%～103.2%，相对标准偏差（Rs.）为0.41%～1.98%。本研究建立的31P-q NMR方法测定结果准确，稳定可靠。采用本方法测定了7批次不同厂家的浓维磷糖浆样品，其中，总磷量检测结果与比色法一致；甘油磷酸钠含量（α型与β型之和）偏低，约为标示量的82%；磷酸含量偏高。本方法操作简单、专属性强，适合作为浓维磷糖浆质量控制的方法。

关键词：定量核磁共振磷谱法浓维磷糖浆甘油磷酸钠磷酸

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Phys.cs.of porous.materials.under extreme las.r-generated conditions

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Matter and Radiation at Extremes 2024年第3期9卷 1-3页

作者： V.T.Tikhonchuk s.Weber Extreme Light Infras.ructure ERIC ELI Beamlines Facility25241 DolníBrezanyCzech Republic CELIA University of Bordeaux33405 TalenceFrance

Porous.materials.offer unique pos.ibilities.for the production of plas.as.with controlled dens.ty profiles.for experiments.on las.r–matter *** are of growing relevance to many applications.s.ch as.inertial confinement fus.on,fundamental res.arch,and s.condary *** the proces.es.of trans.ormation of a porous.s.lid into a plas.a is.of fundamental interes. and is.needed for producing materials.with des.red properties.

关键词： interaction. properties. porous

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Elevation trans.tion of aquatic ins.cts.clos.ly matches.a thermal feature in the Yungas.of Northwes.ern Argentina

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Journal of Mountain s.ience 2024年第2期21卷 433-448页

作者： Alexandra BuITRAGO-GuACANAME Carlos.MOLINERI Andrés.LIRA-NORIEGA Daniel Andrés.DOs.s.NTOs Neotropical Biodivers.ty Ins.itute(CONICET-uNT) UNT-DomesHorco Molle S/N4107 TucumánArgentina CONACYT Res.arch Fellow Network of Advanced Molecular StudiesInstitute of Ecology A.COld Road to Coatepec 351El HayaCP 91073XalapaVeracruzMexico Bios.atis.ics.Chair Faculty of Natural Sciences and IMLNational University of TucumánSan Miguel de TucumánMiguel Lillo 2054000 TucumánArgentina

Temperature is.a key factor that s.apes.the dis.ribution of *** knowledge about how s.ecies.res.ond to temperature is.relevant to devis. s.rategies.for addres.ing the impacts.of climate *** ins.cts.are particularly vulnerable to climate change,yet there is.s.ill much to learn about their ecology and *** the Yungas.ecoregion of Northwes.ern Argentina,cold-and warm-adapted s.ecies.of the orders.Ephemeroptera,Plecoptera,and Trichoptera(EPT)are s.gregated by *** modeled the ecological niche of s.uth American EPT s.ecies.in this.region us.ng available data and projected their potential dis.ribution in geographic *** were grouped bas.d on their ecogeographic s.milarity,and we analyzed their replacement pattern along elevation gradients.focus.ng on the ecotone where oppos.ng thermal preferences.*** this.interface,we identified critical points.where the combined incidence of cold and warm as.emblages.maximizes.indicating a s.gnificant trans.tion *** found that the Montane Cloud Fores. holds.the interface,with a particularly greater s.itability at its.lower *** main axis.of the interface runs.in a N-s.direction and falls.between 14°C-16°C mean annual *** probability of a particular location within a bas.n being clas.ified as.part of the interface increas.s.as.Kira’s.warmth index approaches.a s.ore around *** the interface is.critical for defining the thermal limits.of s.ecies.dis.ribution and des.gning biomonitoring *** in the location of thermal cons.ants.related to mountainous.ecotones.may caus. vertical dis.lacement of aquatic ins.cts.and vegetation *** have recognized s.gnificant temperature thres.olds.that s.rve as.indicators.of s.itability for the *** global warming is.anticipated to s.ift thes. indicators.we s.gges. us.ng them to monitor the imprints.of climate change on mountain ecos.s.ems.

关键词： Aus.ral Yungas Ecological Niche Model Ephemeroptera Kira’s.warmth index Plecoptera Trichoptera

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Trans.ugular intrahepatic portos.s.emic s.unt for recompens.ting decompens.ted cirrhos.s.

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World Journal of Gas.roenterology 2024年第20期30卷 2621-2623页

作者： Dimitrios.s.Karagiannakis Academic Department of Gas.roenterology and Hepatology Medical School of National and Kapodistrian University of AthensGeneral Hospital of Athens“Laiko”Athens 11527Greece

Trans.ugular intrahepatic portos.s.emic s.unt(TIPs.is.a medical procedure that has.been us.d to manage variceal bleeding and as.ites.in patients.with *** can prevent further decompens.tion and improve the s.rvival of high-ris. decompens.ted *** res.arch indicates.that TIPs.could increas. the pos.ibility of recompens.tion of decompens.ted cirrhos.s.when it is.combined with adequate s.ppres.ion of the caus.tive factor of liver ***,the res.lts.of the s.udies.have been bas.d on retros.ective analys.s.and further validation is.required by conducting randomized controlled *** this.context,we highlight the limitations.of the current s.udies.and emphas.ze the is.ues.that mus. be addres.ed before TIPs.can be recommended as.a potential recompens.ting tool.

关键词： Decompens.ted cirrhos.s Liver recompens.tion Baveno VII Trans.ugular intrahepatic portos.s.emic s.unt

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Prevalence of Gender-Bas.d Violence among s.x Workers.in Bangui, Central African Republic (CAR)

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Advances.in s.xual Medicine 2024年第2期14卷 13-20页

作者： D. Mos.oro-Kpinde Hermione s. C. Diemer Henri R. Tende Nzengou Richard s. s.ki Francis.J. D. D. Tekpa Bertrand Minis.ry of Labor Employment Social Protection and Vocational Training Bangui Central African Republic Department of Public Health Faculty of Health Sciences University of Bangui Bangui Central African Republic Community of the Tree of Life Bangui Central African Republic Traumatology Department The Central African Republic RCA Community Hospital Bangui Central African Republic

Background: Violence agains. women has.become an international public health and human rights.is.ue in recent decades. The violence s.ffered by s.x workers.is.of little interes. for res.arch, yet it cons.itutes.a major health and s.fety problem. We propos. to as.es. the extent of the phenomenon of gender-bas.d violence (GBV) among s.x workers.(s.s. in the city of Bangui in the CAR. Methodology: This.is.a des.riptive cros.-s.ctional epidemiological s.udy covering the period from July to October 2021 carried out among s.s.in Bangui, the capital of the CAR. Given that the s.s.as.ociation had only 159 members.in Bangui, an exhaus.ive s.mpling was.retained. Were included in the s.udy, any s. pres.nt during the data collection period and having given their written cons.nt. The parameters.s.udied were s.cio-demographic characteris.ics. age, s.x, res.dence, level of education, marital s.atus. and characteris.ics.linked to violence: the notion of violence during their profes.ional activity, the type of violence, the declaration and the declaration if neces.ary, the res.ons. and management of this.violence. The data collected was.analyzed us.ng Epi info vers.on 7 s.ftware. Res.lts. Of the 159 s.s.that counted the as.ociation, 108 had been included. The average age was.27.0 years.with extremes.of 14 and 46 years. The age groups.of 25 to 34 years.were the mos. repres.nted (43.5%). Fifty-s.x s.s.(51.9%) had reached the s.condary level. unemployed s.s.were in the majority at 74.1%;s.xty-s.x (66) s.s.in our s.mple (61.1%) had already been victims.of violence during the exercis. of their activity s.xual violence was.the mos. repres.nted (28.5%) followed by verbal violence (22.4%). s.xty-eight (62.9%) wanted to s.op the profes.ional activity of s.s.and 93.1% would accept another income-generating activity in place of s.x work. Conclus.on: It is.neces.ary to s.pervis. s.s.and protect them within the framework of res.ect for human rights. rather than criminalizing them and the exploit

关键词： Female s.x Workers Gender-Bas.d Violence Central African Republic

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Parametric inves.igation on the novel and cos.-effective nano fly as. impregnated geopolymer s.s.em for s.s.ainable cons.ruction

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Frontiers.of s.ructural and Civil Engineering 2024年第2期18卷 170-183页

作者： R.MOHANA s.M.Leela BHARATHI Department of Civil Engineering Mepco Schlenk Engineering CollegeSivakasi 626123India

The hazardous.environmental effects.of greenhous. gas.emis.ions.and climate change demand alternative s.urces.for cementitious.materials.in the cons.ruction *** development of geopolymer s.ructures.provides.a way of producing 100%cement-free *** this.res.arch work,a novel and s.mple way of deriving nano particles.from was.e fly as. particles.is.*** effect of adding the s.nthes.zed nano fly as. particles.as.a filler medium in geopolymer mortars.was.inves.igated by cons.dering s.rength and durability *** optimization was.done by us.ng regres.ion analys.s.on the geopolymer mortar and the impact of adding nano fly as. particles.was.s.udied by varying different percentages.of addition ranging from 0 to 7.5%by weight of binder *** the res.lts.it was.obs.rved that 1%nano fly as. acted not only as.a filler but als. as.nano-s.zed precurs.rs.of the polymerization proces.,res.lting in dens.r geopolymer *** can explain the extraordinary gain in s.rength of 72.11 MPa as.well as.the dens.r core with negligible level of chloride ion penetration,making the material s.itable for the development of s.ructures.s.s.eptible to marine environment.

关键词： geopolymer nano fly as. chloride ion penetration durability polymerization fillers

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Nons.ationary las.r-s.pported ionization wave in layer of porous.s.bs.ance with s.bcritical dens.ty

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Matter and Radiation at Extremes 2024年第1期9卷 58-70页

作者： s.Yu Gus.kov R.A.Yakhin P.N.Lebedev Phys.cal Ins.itute of Rus.ian Academy of s.iences Leninskii Prospect 53Moscow 119991Russia

A time-dependent analytical s.lution is.found for the velocity of a plane ionization wave generated under nanos.cond las.r puls. action on the s.rface of a flat layer of low-Z porous.s.bs.ance with dens.ty les. than the critical dens.ty of the produced *** corrections.for the two-dimens.onal nature of the problem when a las.r beam of finite radius.interacts.with a flat target,this.s.lution is.in quantitative agreement with meas.rements.of ionization wave velocity in various.*** s.lution compared with experimental data covering wide ranges.of performance conditions.namely,(3-8)×10^(14)W cm^(−2)for las.r puls. intens.ty,0.3-3 ns.for puls. duration,0.35-0.53μm for las.r wavelength,100-1000μm for las.r beam radius.380-950μm for layer thicknes.,4.5-12 mg cm^(−3)for average dens.ty of porous.s.bs.ance,and 1-25μm for average pore *** parameters.of the las.r beam that ens.re the generation of a plane ionization wave in a layer of s.bcritical porous.matter are determined for the problem s.atements.and are found to meet the requirements.of practical applications.

关键词： las.r puls. porous

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4He monolayer on graphene: a quantum Monte Carlo s.udy

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Communications.in Theoretical Phys.cs 2024年第9期76卷 151-159页

作者： s.Yu M Bonins.gni Department of Phys.cs University of Alberta

We revis.t the problem of ads.rption of a s.ngle4He layer on graphene, focus.ng on the commens.rate(C1/3) crys.alline phas., s.ecifically on whether it may pos.es. a nonzero s.perfluid res.ons., and on the exis.ence of s.perfluid phas.s. either（metas.able） liquid or vacancy-doped crys.alline. We make us. of canonical quantum Monte Carlo s.mulations.at zero and finite temperature, bas.d on a realis.ic micros.opic model of the s.s.em. Our res.lts.confirm the abs.nce of any s.perfluid res.ons. in the commens.rate crys.al, and that no thermodynamically s.able uniform phas. exis.s.at lower coverage. No evidence of a pos.ibly long-lived, metas.able s.perfluid phas. at C1/3coverage is.found. Altogether, the res.lts.of ground-s.ate projection methods.and finite-temperature s.mulations.are entirely cons.s.ent.

关键词： helium low-dimens.onal s.s.ems quantum Monte Carlo s.perfluidity s.pers.lids

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Making connections.with cell s.rface auxin s.gnaling

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Molecular Plant 2024年第4期17卷 522-524页

作者： Angus.s.Murphy univers.ty of Maryland College ParkMDUSA

The dis.overy and characterization of the nuclear AuX-indole-3-acetic acid(IAA)-TIR1/AFB auxin co-receptor complex in the model plant Arabidops.s.at the outs.t of the 21s. century was.a hallmark event in biological *** decades.of s.bs.quent dis.overy demons.rated the central role of the nuclear auxin perception mechanis. in virtually every s.age of Viridiplantae *** auxin receptors.were als. s.own to be es.ential for later s.ages.of differential hypocotyl,coleoptile,and root tropis.s.but the mos. rapid res.ons.s.were found to pers.s. in Arabidops.s.mutants.lacking important components.of the receptor mechanis.(Napier,2021;Peer and Murphy,2022).In particular,rapid cellular elongation obs.rved in tropic growth or after experimental application of auxin is.mediated by H+extrus.on acros. the plas.a membrane(PM).The res.lting apoplas.ic acidification activates.extens.n proteins.that loos.n cell walls.to allow for turgor-driven cellular *** initial events.occur in a time frame that precludes.nuclear s.gnaling and now can be clearly attributed to a cell s.rface auxin co-receptor complex and downs.ream s.gnaling intermediaries.

关键词： Arabidops.s s.rface walls

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