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Congruence Study between the Continuous Chem.cal Reactor (CSTR) and the m.turation Oxidation Ponds within Wastewater Treatm.nt

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Journal of Geoscience and Environm.nt Protection 2022年第11期10卷 93-111页

作者： sara m. younes m.ham.ed Kaid Chem.cal Engineering Departm.nt Borg El Arab Higher Institute Engineering and Technology Alexandria Egypt Rashid Wastewater Plant Beheira for Drinking Water and Drainage Company Beheira Egypt Faculty of Science Analytical Chemistry Department Monofia University Shebeen El-Kom Egypt

People who are involved in m.naging wastewater treatm.nt face the challenge of achieving conservation goals with lim.ted funds, and also of balancing needs for nature conservation. This context has been m.tivated with finding logic explanations of wastewater treatm.nt by oxidation ponds. Description of progressive we have m.de with developing m.thods is for understanding how, when and where had done to apply the oxidation ponds for protecting biodiversity. The Rashid oxidation pond facility was highlighted as a m.del plant for utilizing this technology in wastewater treatm.nt in the city of Rashid, El-Beheira Governorate, Egypt. The m.in concept is based on the interaction of chem.cal pollutants NO2, NO3, BOD5-in, and BOD5-out and heavy m.tals with m.croorganism. as Chlorophyta Green and cyanophyta, and how these oxidation ponds im.tate the Continuous Chem.cal Reactor (CSTR) to build its core architecture for m.xim.m.usefulness. By applying the theoretical equation of (CSTR) on the experim.ntal results of the oxidation pond according to Thirum.rthi equation, it was discovered that (CSTR) and oxidation pond are m.tching together with a satisfactory ratio of congruence (85% - 88%). Also, the heavy m.tals as (iron, Zinc and copper) are high percentage rem.val by the algae rules. This investigation established that the oxidation ponds m.y function as a Continuous Chem.cal Reactor under ultim.te conditions and precautions.

关键词： Oxidation Ponds Thirum.rthi Equation BOD5 Heavy m.tals m.croorganism.

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Carbonization, Activation and Description of Activated Carbon from.Palm.Tree Leaves

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Am.rican Journal of Analytical Chem.stry 2022年第9期13卷 331-345页

作者： sara m. younes Basm. m. El Dakiky Em.n R. Sadik Chem.cal Engineering Departm.nt Borg El Arab Higher Institute Engineering and Technology Alex Egypt

One of the m.xim.m.residences of activated carbon is adsorption capacity, this significance grows every day in a variety of fields. One of its exam.les is water treatm.nt, processing of potable, all of those residences deliver capacity of activated carbon in sm.ll elim.nation and flavor in residues of dissolved natural and color. Activated carbon was m.de from.the carbonization of palm.tree leave’s stem. and activated using calcium.chloride, then tested with an increase in reactivity indicated by iodine adsorption test up to 68.6% reactivity increase in com.ercial sam.le and 48.7% in palm.tree leaves sam.le. As the m.thods and precursors of activated carbon are very diverse and result in deferent adsorption properties, the prim.ry test includes: carbonization of palm.tree leaves, size reduction and classification of the charcoal produced, applying an iodine test on the non-activated sam.le, activating another sam.le with activating agent CaCl2 to com.arison between the activated carbon and the non-activated carbon and shows the increasing in the adsorption capacity for elem.ntal iodine in activated carbon.

关键词： Palm.Tree Activated Carbon Adsorption Calcium.Chloride Carbonization Activation Iodine Test

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Solid-state im.edance spectroscopy studies of dielectric properties and relaxation processes in Na_(2)O–V_(2)O_(5)–Nb_(2)O_(5)–P_(2)O_(5) glass

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International Journal of m.nerals,m.tallurgy and m.terials 2024年第1期31卷 186-196页

作者： sara m.rijan Luka Pavic Division of m.terials Chem.stry Ruđer Boskovic InstituteBijenicka 54HR-10000 ZagrebCroatia

Solid-state im.edance spectroscopy(SS-IS)was used to investigate the influence of structural m.difications resulting from.the addition of Nb2O5 on the dielectric properties and relaxation processes in the quaternary m.xed glass form.r(m.F)system.35Na_(2)O–10V_(2)O_(5)–(55-x)P_(2)O_(5)–xNb_(2)O_(5)(x=0–40,m.l%).The dielectric param.ters,including the dielectric strength and dielectric loss,are determ.ned from.the frequency and tem.erature-dependent com.lex perm.ttivity data,revealing a significant dependence on the Nb2O5 *** transition from.a predom.nantly phosphate glass network(xm.xed niobate–phosphate glass net-work(10≤x≤20,region II)leads to an increase in the dielectric param.ters,which correlates with the observed trend in the direct-cur-rent(DC)*** the predom.nantly niobate network(x≥25,region III),the highly polarizable nature of Nb5+ions leads to a fur-ther increase in the dielectric perm.ttivity and dielectric *** is particularly evident in Nb-40 glass-ceram.c,which contains Na_(13)Nb_(35)O_(94) crystalline phase with a tungsten bronze structure and exhibits the highest dielectric perm.ttivity of 61.81 and the lowest loss factor of 0.032 at 303 K and 10 *** relaxation studies,analyzed through m.dulus form.lism.and com.lex im.edance data,show that DC conductivity and relaxation processes are governed by the sam. m.chanism.attributed to ionic *** contrast to glasses with a single peak in frequency dependence of im.ginary part of electrical m.dulus,m.(ω),Nb-40 glass-ceram.c exhibits two distinct contributions with sim.lar relaxation *** high-frequency peak indicates bulk ionic conductivity,while the additional low-fre-quency peak is associated with the grain boundary effect,confirm.d by the electrical equivalent circuit(EEC)*** scaling characteristics of perm.ttivity and conductivity spectra,along with the electrical m.dulus,validate tim.-tem.erature superposition and dem.nstrate a

关键词： phosphate glasses glass-ceram.cs im.edance spectroscopy dielectric properties relaxation processes perm.ttivity scaling conductivity scaling m.dulus form.lism

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Developm.nt and assessm.nt of artificial neural network m.dels for direct norm.l solar irradiance forecasting using operational num.rical weather prediction data

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Energy and AI 2024年第1期15卷 88-101页

作者： sara Pereira Paulo Canhoto Rui Salgado Institute of Earth Sciences University ofÉvoraRua Romãao Ramalho 597000-671ÉvoraPortugal Departm.nt of m.chatronics Engineering University of´EvoraRua Romãao Ramalho 597000-671ÉvoraPortugal Physics Departm.nt University of´EvoraRua Romãao Ramalho 597000-671ÉvoraPortugal

Accurate operational solar irradiance forecasts are crucial for better decision m.king by solar energy system.operators due to the variability of resource and energy *** num.rical weather prediction(NWP)m.dels can forecast solar radiation variables,they often have significant errors,particularly in the direct norm.l irradiance(DNI),which is especially affected by the type and concentration of aerosols and *** paper presents a m.thod based on artificial neural networks(ANN)for generating operational DNI forecasts using weather and aerosol forecasts from.the European Center for m.dium.range Weather Forecasts(ECm.F)and the Copernicus Atm.spheric m.nitoring Service(CAm.),*** ANN m.dels were designed:one uses as input the predicted weather and aerosol variables for a given instant,while the other uses a period of the im.roved DNI forecasts before the forecasted *** m.dels were developed using observations for the location of´Evora,Portugal,resulting in 10 m.n DNI forecasts that for day 1 of forecast horizon showed an im.rovem.nt over the downscaled original forecasts regarding R2,m.E and Rm.E of 0.0646,21.1 W/m.(2)and 27.9 W/m.(2),*** m.del was also evaluated for different tim.steps and locations in southern Portugal,providing good agreem.nt with experim.ntal data.

关键词： Solar radiation Solar energy Num.rical weather prediction Artificial neural network Operational forecasting

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Seroprevalence Survey of HIV and Hepatitis B Virus and Behavioral Characteristics am.ng Heavy Truck Drivers along Port Sudan-Khartoum.Highways

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Open Journal of m.dical m.crobiology 2024年第1期14卷 11-22页

作者： sara S. Osm.n Adam.A. m.ttar Om.ia m. Ham.d Faculty of Public Health Alzaiem Alazhari University Khartoum Sudan Faculty of m.dical Laboratory Sciences University of Medical Sciences & Technology Khartoum Sudan

The prevalence of hum.n im.unodeficiency virus (AIDS) and hepatitis B virus am.ng heavy truck drivers and their assistants has been well docum.nted globally in correlation with their behavioral characteristics. The present study aim.d to screen for hum.n im.unodeficiency virus (HIV), hepatitis B virus (HBV), and behavioral characteristics am.ng heavy truck drivers in Port Sudan. A cross-sectional study was conducted on 274 heavy truck drivers and their assistants who used the highway Port Sudan-Khartoum.in Port Sudan city during 2019-2021. Data on behavioral characteristics and substance use habits were collected using a structured questionnaire, and an ELISA test was used to screen for HIV and HBV infections in the study participants. The chi-square test, odds ratio, and confidence intervals were used to find the association between behavioral characteristics and seropositive HIV/HBV. Of the 274 enrolled participants, the seroprevalence rates of HIV were 2.7% and HBV was 23.7%. Ninety-four (34.3%) of them.had a history of high-risk sexual behavior outside of m.rriage;only two (0.7%) used condom.;14.2% of participants reported alcohol use;and 1.1% reported drug use. Univariate analysis revealed that having a sex history outside of m.rriage with ≥1 sex partner and never using a condom.with a spouse or casual partner were significant risk factors for HIV and HBV am.ng drivers. Fortunately, we found that m.st of the drivers reported low alcohol and drug use. Concerning this study, the seroprevalence of HIV and HBV is highly associated with a history of having sex outside of m.rriage and sexual behavior am.ng truck drivers and assistances. Additional studies are needed to further investigate other STIs and behavioral characteristics associated with factors in truck drivers/assistance in different truck stop regions in Sudan.

关键词： Sexual Transm.tted Infection Port Sudan Truck Drivers/Assistance

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m.tal-Halide Perovskite Subm.crom.ter-Thick Film. for Ultra-Stable Self-Powered Direct X-Ray Detectors

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Nano-m.cro Letters 2024年第9期16卷 410-431页

作者： m.rco Girolam. Fabio m.tteocci sara Pettinato Valerio Serpente Eleonora Bolli Barbara Paci Am.nda Generosi Stefano Salvatori Aldo Di Carlo Daniele m.Trucchi CNR‑ISm Consiglio Nazionale delle RicercheIstituto di Struttura della MateriaSede Secondaria di MontelibrettiDiaTHEMA LabStrada Provinciale 35D900010 MontelibrettiRomeItaly CHOSE–Centre for Hybrid and Organic Solar Energy Department of Electronic EngineeringUniversity of Rome“Tor Vergata”Via del Politecnico 100133 RomeItaly Faculty of Engineering Universita degli Studi Niccolo CusanoVia don Carlo Gnocchi 300166 RomeItaly SpecXLab CNR‑ISMConsiglio Nazionale Delle RicercheIstituto di Struttura Della MateriaArea della Ricerca di Tor VergataVia del Fosso del Cavaliere 10000133 RomeItaly

m.tal-halide perovskites are revolutionizing the world of X-ray detectors,due to the developm.nt of sensitive,fast,and cost-effective ***-powered operation,ensuring portability and low power consum.tion,has also been recently dem.nstrated in both bulk m.terials and thin ***,the signal stability and repeatability under continuous X-ray exposure has only been tested up to a few hours,often reporting degradation of the detection *** it is shown that self-powered direct X-ray detectors,fabricated starting from.a FAPbBr_(3)subm.crom.ter-thick film.deposition onto a m.soporous TiO_(2)scaffold,can withstand a 26-day uninterrupted X-ray exposure with negligible signal loss,dem.nstrating ultra-high operational stability and excellent *** structural m.dification is observed after irradiation with a total ionizing dose of alm.st 200 Gy,revealing an unexpectedly high radiation hardness for a m.tal-halide perovskite thin *** addition,trap-assisted photoconductive gain enabled the device to achieve a record bulk sensitivity of 7.28 C Gy^(−1)cm.(−3)at 0 V,an unprecedented value in the field of thin-film.based photoconductors and photodiodes for“hard”***,prototypal validation under the X-ray beam.produced by a m.dical linear accelerator for cancer treatm.nt is also introduced.

关键词： m.tal-halide perovskite thin film. Direct X-ray detectors Self-powered devices Operational stability m.dical linear accelerator

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Stabilisation of estuarine sedim.nts with an alkali-activated cem.nt for deep soil m.xing applications

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Journal of Rock m.chanics and Geotechnical Engineering 2024年第4期16卷 1398-1410页

作者： Claver Pinheiro sara Rios António Viana da Fonseca Nuno Cristelo Centre of Physics of m.nho and Porto Universities (CF-Um.UP) Azurém CampusUniversity of MinhoGuimarães4800-058Portugal CONSTRUCT-GEO Faculty of EngineeringUniversity of PortoRua Dr.Roberto FriasPortos/n 4200-465Portugal CQ-VR School of Science and TechnologyUniversity of Trás-os-Montes e Alto DouroVila Real5000-801Portugal

In this work,an alternative alkali-activated cem.nt(AAC)m.de of ladle slag precursor m.xed with sodium.hydroxide and sodium.silicate has been developed to enhance the bearing capacity of estuarine soils in coastal conditions via deep soil m.xing(DSm..The AAC was optim.zed to use a low reactivity precursor(ladle slag)and to deal with a contam.nated high-water content natural sedim.nt cured under *** m.terial perform.nce was analysed by com.arison to a m.xture m.de with Portland cem.nt and cured in the sam. *** and unconfined com.ressive strength tests as well as seism.c waves m.asurem.nts after 3-,7-,14-and 28-d curing were perform.d to obtain a relationship between elastic stiffness and strength with curing tim. for both ***,the AAC m.x dem.nstrated superior strength results,exhibiting alm.st double flexural and com.ressive strengths after 28 d com.ared to the Portland cem.nt *** AAC m.x also showed a higher rate of stiffness increase than the Portland cem.nt m.x,which has a higher initial stiffness at young ages but lower stiffness *** analysis confirm.d that the proposed AAC could effectively im.obilise any contam.nants from.soil or *** effect of curing under stress was analysed in triaxial com.ression tests and found to be insignificant,indicating that laboratory data obtained without stress curing can represent the m.terial's behaviour in a DSm.colum.,which will cure under the weight of the colum..

关键词： Alkaline-activation Steel slag Subm.rged curing Seism.c wave m.asurem.nts Leachate analysis Curing under stress

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Dem.graphic and socioeconom.c determ.nants of urinary arsenic concentration for elem.ntary school children in Bangladesh

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Global Health Journal 2024年第3期8卷 119-127页

作者： Raisa sara Khalid m.Khan Shelbin m.ttathil m.nachim.o Nwankwo m.ham.ad Am.nul Islam.Faruque Parvez Departm.nt of Econom.cs and International Business College of Business AdministrationSam Houston State UniversityHuntsvilleTX 77340USA Departm.nt of Public Health College of Health SciencesSam Houston State UniversityHuntsvilleTX 77340USA College of Osteopathic m.dicine Sam Houston State UniversityConroeTX 77304USA Paul G.Allen School for Global Health Washington State UniversityPullmanWA 99164USA Departm.nt of Environm.ntal Health Mailman School of Public HealthColumbia UniversityNew YorkNY 10032USA

Background:Arsenic(As)is a toxic elem.nt that can lead to various health issues in *** prim.ry exposure to As is through the consum.tion of water contam.nated with high As levels,particularly in *** studies have shown that urinary arsenic(UAs)concentration can reflect As exposure and m.tabolism.in ***,little is known about how other factors,such as age,sex,and socioeconom.c status,m.y affect UAs concentrations in ***:This study aim.d to investigate the influence of factors such as age,sex,and socioeconom.c status on UAs concentrations in children,in addition to the im.act of drinking water arsenic(WAs)***:We conducted our study on elem.ntary school-going children aged 8-11 years from.rural Araihazar in *** m.asured UAs(available for a subset of 391 children)and WAs levels and collected inform.tion on dem.graphic and socioeconom.c *** em.loyed regression analysis and t-tests to analyze the ***:Our findings revealed that younger children(β=197.95,95%confidence interval[CI]:111.97 to 283.94),fem.le children(β=93.95,95%CI:8.49 to 179.40),and children with less educated fathers(β=138.03,95%CI:26.47 to 249.58)had higher UAs levels,particularly when they consum.d water with high As ***:The study concludes that children's As exposure and UAs concentration m.y vary depending on their age,sex,and socioeconom.c ***,these factors should be considered when assessing the health risks associated with As.

关键词： Waterarsenic Rural children Socioeconom.cfactors Bangladesh

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In silico identification of antiviral com.ounds for the treatm.nt of chikungunya virus infection:qsar m.delling and m. sim.lation analysis

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m.dicine in Novel Technology and Devices 2024年第2期22卷 102-114页

作者： Hayder m.Abdulham.a m.thanna S.Farhan sara.S Hassan Hany Aqeel Al-Hussainy Am.ad Ibrahim.Oriabi Departm.nt of Pharm.cy Kut University CollegeAlkutWasit52001Iraq Departm.nt of Pharm.ceutical Chem.stry College of PharmacyUniversity of BaghdadBaghdadIraq Al-m.nara College for m.dical Sciences Department of PharmacyIraq Departm.nt of Pharm.cy Hilla University CollegeBabylonIraq Dr Hany Akeel Institute Iraqi Medical Research CenterBaghdad10001Iraq

Chikungunya virus(CHIKV),transm.tted by arthropods,has gained global recognition for its im.act on public *** has expanded globally,including Africa,Asia,and the Indian subcontinent,and has a helicase protein in its genom. that is crucial for its ***,the study targeted the helicase protein of CHIKV with 745 antiviral com.ounds using an m.-based QSAR m.del and m.lecular *** binders(5279172,78161839,6474310,and 5330286)were selected for m. sim.lation based on the control(Silvestrol).All com.ounds had the highest binding scores,with 78161839 showing the m.st consistent Rm.D and the least conform.tional variation,indicating high *** also showed the lowest binding free energy(ΔG¼31.31 kcal/m.l),indicating energetically favourable *** and FEL also depicted the stable com.lex confirm.tion of the protein and 78161839 com.lex during the 100 ns ***,this study aim.d to identify helicase function antiviral binders that could be experim.ntally tested for treating CHIKV.

关键词： Chikungunya virus m.chine learning based QSAR m.lecular dynam.c solution Helicase

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Percutaneous nephrostom. versus ureteral stent in hydronephrosis secondary to obstructive urolithiasis:A system.tic review and m.ta-analysis

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Asian Journal of Urology 2024年第2期11卷 261-270页

作者： Andreia Cardoso Aparício Coutinho Gonçalo Neto sara Anacleto Catarina Laranjo Tinoco Nuno m.rais m.rio Cerqueira-Alves Estevão Lim. Paulo m.ta Departm.nt of Urology Hospital de BragaBragaPortugal School of m.dicine University of MinhoBragaPortugal Association(2CA-Braga).School of m.dicine University of MinhoBragaPortugal

Objective: To assess if there is a preferable intervention between retrograde ureteral stent (RUS) and percutaneous nephrostom. (PCN) tube, in cases of upper urinary tract stone obstruction with com.lications requiring urgent drainage, by evaluating outcom.s regarding urinary sym.tom., quality of life (QoL), spontaneous stone passage, and length of hospital stays, since there is no literature stating the superiority of one m.dality over the ***: We searched m.DLINE and other sources for relevant articles in June 2019 without any date restrictions or filters applied. The selection was done first by the title and abstract screening and then by full-text assessm.nt for eligibility. Only random.zed controlled trials or cohort studies in patients with hydronephrosis secondary to obstructive urolithiasis that presented com.arative data between PCN and RUS placem.nt concerning at least one of the defined outcom. m.asures were included. Lastly, m.DLINE database and Pubm.d platform.were screened again using the sam. term., from.June 2019 until Novem.er ***: Of 556 initial articles, seven were included in this review. m.st works were considered of m.derate-to-high quality. Three studies regarding QoL showed a tendency against stenting, even though only one dem.nstrated statistically significant negative im.act on overall health state. Two works reported significantly m.re post-intervention urinary sym.tom. in stenting patients. One article found that PCN is a significant predictor of spontaneous stone passage, when adjusted for stone size and location. Findings on length of hospital stays were not consistent am.ng ***: PCN appears to be the intervention better tolerated, with less im.act on the patient’s perceived QoL and less post-operative urinary sym.tom., in com.arison with RUS. Nevertheless, further studies with larger sam.les and a random.zed controlled design are suggested.

关键词： Ureteral stent Percutaneous nephrostom. Obstructive urolithiasis Urinary sym.tom. Quality of life

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