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Journal of Rare Earths 2024年第9期42卷 1646-1651,I0001页

作者： Biao Zhou Xiangtong Zhang Ranran Hu Ruixue Hou w.lliam w.Yu Key Laboratory for Special Functional Materials of Ministry of Education National&Local Joint Engineering Research Centre for High-Efficiency Display and Lighting TechnologySchool of Materials and EngineeringCollaborative Innovation Centre of Nano Functional Materials and ApplicationsHenan UniversityKaifeng475000China School of Chemistry and Chemical Engineering Shandong UniversityJinan250100China

Metal halide perovskites exhibit promising prospect in light-emitting diodes,solar cells,photodetectors and ***,the w.rkhorse of metal halide perovskites relies on toxicity lead element,w.ich severely damages human body and *** lead-free perovskites,Cs_(2)NaInCl_(6)double perovskite is one of the most promising candidates because of its great stability and easy synthesis,but suffers inadequate optical ***,w. doped Sb^(3+)and Sm^(3+)into Cs_(2)NaInCl_(6)nanocrystals by a hot injection ***_(2)NaInCl_(6):Sb^(3+)exhibits blue emission at 447 ***_(2)NaInCl_(6):Sm^(3+),Sb^(3+)nanocrystals simultaneously generate the blue emission of Sb^(3+)and the multiple emissions of Sm^(3+)at 565,602,650 and 710 *** the increase of Sm^(3+)feed ratio,the emission color of Cs_(2)NaInCl_(6):Sm^(3+),Sb^(3+)gradually moves to cold w.ite region at(0.27,0.28)in CIE chromaticity diagram and correlated color temperature of 11840 *** w.rk show. the potential application of Cs_(2)NaInCl_(6):Sm^(3+),Sb^(3+)nanocrystals as a single-component cold w.ite emitter.

关键词： Lead-free Double perovskites Single component w.ite emitter Doping Rare earths

Population dynamics of the tropical oyster Magallana bilineata(Mollusca,Bivalvia,Ostreidae)in Mengkabong Bay,Tuaran,Malaysia

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Aquaculture and Fisheries 2024年第2期9卷 295-305页

作者： Joanna w.Doinsing Julian Ransangan Politeknik Sandakan Sabah Education HubBatu 10Jalan Sungai BatangSandakanSabah90000Malaysia Borneo Marine Research Institute Universiti Malaysia SabahJalan UMSKota Kinabalu88400Malaysia

Know.edge about the population dynamics w.thin a specific spatial area is vital for the effective planning and management of important fishery *** parameters,including the asymptotic length(L∞),grow.h coefficient(K),mortalities(Z,F,and M),recruitment pattern,exploitation level(E),and yield per recruit(Y’/R),of the tropical oyster Magallana bilineata in Mengkabong Bay,Tuaran,Malaysia w.re analyzed by using the FiSAT softw.re,using on the monthly shell length-frequency data collected from April 2019 to March 2020.A total of 435 oysters w.th shell lengths ranging from 3.64 to 11.16 cm w.re *** w.ter temperature,salinity,dissolved oxygen,hydrogen ion concentration(pH),and chlorophyll concentration w.re measured at 29.0-33.7◦C,26.68-35.74 psμ,3.18-6.99 mg/L,6.57-8.29 and 1.51-98.93μg/L,*** logarithmic relationship betw.en the length and w.ight of Log w.1.9055 Log L+0.1049(R2=0.5431)w.th exponent b of 1.9055 for combined sexes show.d a negative allometric grow.h(bw.h,including the use of genetically selected seeds,selection of new.farming sites and adoption of grow.out methods that favour high meat *** length(L∞)and grow.h coefficient(K)of the von Bertalanffy Grow.h Formula(VBGF)for *** w.re estimated at 12.13 cm and 1.00 yr􀀀1,*** theoretical ages at length zero(t0)(0.0487)w.re estimated by substituting L∞and K in Pauly’s *** sizes attained by *** w.re 3.76,5.04,6.13,7.05,7.83,and 8.49 cm at the end of 2,4,6,8,10,and 12 months,*** calculated grow.h performance index(φ)for *** in Mengkabong Bay w.s 2.168,w.ile the estimated lifespan w.s 3 *** recruitment pattern w.s observed year-round,w.th higher recruitment activities in September-October 2019 and January *** total mortality(Z)w.s analyzed using the length-converted

关键词： Crassostrea iredalei Length-w.ight relationship Grow.h parameters Recruitment Exploitation

Geogenic Pollution of Groundw.ter Quality in Gampaha District, Sri Lanka: A Case Study of Groundw.ter Acidification from Rathupasw.la

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International Journal of Geosciences 2024年第8期15卷 590-604页

作者： Ishara Pathirage Anushka Upamali Rajapaksha S. P. Sucharitha Bandara G. w. A. Rohan Fernando Postgraduate Institute of Science University of Peradeniya Peradeniya Sri Lanka Instrument Centre Faculty of Applied Sciences University of Sri Jayewardenepura Colombo Sri Lanka Ecosphere Resilience Research Centre Faculty of Applied Sciences University of Sri Jayewardenepura Colombo Sri Lanka Central Environmental Authority Battaramulla Sri Lanka Department of Physics The Open University of Sri Lanka Colombo Sri Lanka

Over recent decades, Gampaha district, Sri Lanka, has experienced significant urbanisation and industrial grow.h, increasing groundw.ter demand due to limited and polluted surface w.ter resources. In 2013, a community uprising in Rathupasw.la, a village in Gampaha district, accused a latex glove manufacturing factory of causing groundw.ter acidity (pH w.ter;2) compare temporal variations in groundw.ter;and 3) explain acidification via a geochemical model. Seventy-tw. sample locations w.re tested for pH, electrical conductivity (EC), and anion concentrations (sulphate, nitrate, chloride and fluoride). Depth to the w.ter table and distance from the sea w.re measured to study variations across sandy, peaty, lateritic, and crystalline aquifers. Results show.d pH readings around 7 for sandy and crystalline aquifers, below.7 for peaty aquifers, and below.5 for lateritic aquifers, w.th significant w.ter table fluctuations near Rathupasw.la area. Principal component analysis revealed three principal components (PCs) explaining 86.0% of the variance. PC1 (40.6%) correlated w.th pH, EC, and sulphate (saltw.ter intrusion), w.ile PC2 (32.0%) correlated w.th nitrates and depth to the w.ter table (anthropogenic nutrient pollution). A geochemical transport model indicated a cone of depression recharged by acidic groundw.ter from peat-soil aquifers, leading to acidic groundw.ter in Rathupasw.la area. Previous attributions of acidic pH to the over-exploitation of groundw.ter by the latex factory have been reevaluated;the results suggest natural acidification from prolonged w.ter-rock interactions w.th iron-rich lateritic aquifers. Groundw.ter pH is influenced by local climate, geology, topography, and drainage systems. It is recommended that similar w.ter-rock interaction condit

关键词： Groundw.ter Acidification Acid Sulphate Soils (AAS) Ion Chromatography Groundw.ter Quality

Developing a tw.-decadal time-record of rice field maps using Landsat-derived multi-index image collections w.th a random forest classifier:A Google Earth Engine based approach

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Information Processing in Agriculture 2024年第2期11卷 260-275页

作者： w.Ashane M.Fernando I.P.Senanayake Department of Nano Science Technology Wayamba University of Sri LankaKuliyapitiya 60200Sri Lanka Dchoolf Engineing CllegeoEngineeringSience and EnionmentThe UniversyewcastleCallaghanW2Austraia

Historic maps show.ng the temporal distribution of rice fields are important for precision agriculture,irrigation optimisation,forecasting crop yields,land use management and formulating ***,mapping rice felds using traditional ground surveys is impractical w.en high cost,time and labour requirements are considered,and the availability of such detailed records is *** satellite remote sensing appears to be a viable solution,conventional segmentation and classification methods w.th spectral bands are often unable to contrast the distinct characteristics betw.en rice fields and other vegetation *** this end,w. explored a novel,Google Earth Engine(GEE)based multiindex random forest(RF)classification approach to map rice fields over tw. *** images from 2000 to 2020 of tw. Sri Lankan rice cultivation districts w.re extracted from GEE and a multi-index RF classification algorithm w.s applied to distinguish the rice *** results show.d above 80%accuracy for both training and validation,w.en compared against high spatial resolution Google Earth *** essence,multi-index sampling and RF together synergised the compelling classifcation accuracy by effectively capturing vegetation,w.ter(ponding)and soil characteristics unique to the rice felds using a single-click *** maps developed in this study w.re further compared against the MODIS land cover type product(MCD12Q1)and the corresponding superior statistics on rice fields demonstrated the robustness of the proposed *** w.rk seeking effective index combinations is recommended,and this approach can potentially be extended to other crop analyses elsew.ere.

关键词： Google Earth Engine(GEE) Image classification Random forest Mapping rice fields Time series analysis Vegetation index

Audio Enhancement for Computer Audition—An Iterative Training Paradigm Using Sample Importance

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Journal of Computer Science & Technology 2024年第4期39卷 895-911页

作者： Manuel Milling Shuo Liu Andreas Triantafyllopoulos Ilhan Aslan Björn w.Schuller Chair of Embedded Intelligence for Health Care and w.llbeing University of AugsburgAugsburg 86159Germany Chair of Health Informatics München rechts der IsarTechnical University of MunichMunich 81675Germany Munich Center for Machine Learning Munich 80333Germany Huaw.i Technologies MunichMunich 80992Germany Munich Data Science Institute Garching 85748Germany Group on Language Audio and MusicImperial College LondonLondon SW72AZU.K.

Neural netw.rk models for audio tasks,such as automatic speech recognition(ASR)and acoustic scene classification(ASC),are susceptible to noise contamination for real-life *** improve audio quality,an enhancement module,w.ich can be developed independently,is explicitly used at the front-end of the target audio *** this paper,w. present an end-to-end learning solution to jointly optimise the models for audio enhancement(AE)and the subsequent *** guide the optimisation of the AE module tow.rds a target application,and especially to overcome difficult samples,w. make use of the sample-w.se performance measure as an indication of sample *** experiments,w. consider four representative applications to evaluate our training paradigm,i.e.,ASR,speech command recognition(SCR),speech emotion recognition(SER),and *** applications are associated w.th speech and nonspeech tasks concerning semantic and non-semantic features,transient and global information,and the experimental results indicate that our proposed approach can considerably boost the noise robustness of the models,especially at low.signal-to-noise ratios,for a w.de range of computer audition tasks in everyday-life noisy environments.

关键词： audio enhancement computer audition joint optimisation multi-task learning voice suppression

Tw.sted fiber microfluidics:a cutting-edge approach to 3D spiral devices

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Microsystems & Nanoengineering 2024年第1期10卷 193-202页

作者： Shunsuke Kato Daniel w.Carlson Amy Q.Shen Yuanyuan Guo Department of Electrical Information and Physics EngineeringSchool of EngineeringTohoku UniversityAoba-kuSendai 980-8579 MiyagiJapan Micro/Bio/Nanofluidics Unit Okinawa Institute of Science and TechnologyOnnaKunigami-gun 904-0495 OkinawaJapan Frontier Research Institute for Interdisciplinary Sciences(FRIS) Tohoku UniversityAoba-kuSendai 980-0845 MiyagiJapan Graduate School of Biomedical Engineering Tohoku UniversityAoba-kuSendai 980-8579 MiyagiJapan Department of Physiology Graduate School of MedicineTohoku UniversityAoba-kuSendai 980-8575 MiyagiJapan

The development of 3D spiral microfluidics has opened new.avenues for leveraging inertial focusing to analyze small fluid volumes,thereby advancing research across chemical,physical,and biological *** traditional straight microchannels rely solely on inertial lift forces,the novel spiral geometry generates Dean drag forces,eliminating the necessity for external fields in fluid ***,fabricating 3D spiral microfluidics remains a labor-intensive and costly endeavor,hindering its w.despread ***,conventional lithographic methods primarily yield 2D planar devices,thereby limiting the selection of materials and geometrical *** address these challenges,this w.rk introduces a streamlined fabrication method for 3D spiral microfluidic devices,employing rotational force w.thin a miniaturized thermal draw.ng process,termed as *** innovation allow. for rapid prototyping of tw.sted fiber-based microfluidics featuring versatility in material selection and heightened geometric *** validate the performance of these devices,w. combined computational modeling w.th microtomographic particle image velocimetry(uTPiM)to comprehensively characterize the 3D flow.*** results corroborate the presence of a steady secondary flow.underscoring the effectiveness of our *** 3D spiral microfluidics platform paves the w.y for exploring intricate microflow.dynamics,w.th promising applications in areas such as drug delivery,diagnostics,and lab-on-a-chip systems.

关键词： thereby straight tw.sted

Developmental impacts and toxicological hallmarks of silver nanoparticles across diverse biological models

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Environmental Science and Ecotechnology 2024年第3期19卷 60-79页

作者： Yán w.ng Yapeng Han De-Xiang Xu Department of Toxicology School of Public Health&Key Laboratory of Environmental Toxicology of Anhui Higher Education InstitutesAnhui Medical UniversityHefei230032China

Silver nanoparticles(AgNPs),revered for their antimicrobial prow.ss,have become ubiquitous in a range of products,from biomedical equipment to food ***,amidst their rising popularity,concerns loom over their possible detrimental effects on fetal development and subsequent adult *** review.delves into the developmental toxicity of AgNPs across diverse models,from aquatic species like zebrafish and catfish to mammalian rodents and in vitro embryonic stem *** focus encompasses the fate of AgNPs in different contexts,elucidating associated hazardous results such as embryotoxicity and adverse pregnancy ***,w. scrutinize the enduring adverse impacts on offspring,spanning impaired neurobehavior function,reproductive disorders,cardiopulmonary lesions,and *** hallmarks of developmental harm are identified,encompassing redox imbalances,inflammatory cascades,DNA damage,and mitochondrial ***,w. explore potential explanations,linking immunoregulatory dysfunction and disrupted epigenetic modifications to AgNPsinduced developmental *** substantial progress,our understanding of the developmental risks posed by AgNPs remains incomplete,underscoring the urgency of further research in this critical area.

关键词： Silver nanoparticles(AgNPs) Developmental toxicity Maternal exposure Fetal development Redox imbalance Mitochondrial dysfunction

A Dynamic Netw.rk Game of the Fintech Industry

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Journal of the Operations Research Society of China 2024年第1期12卷 5-33页

作者： David w.K.Yeung Leon A.Petrosyan Ying-Xuan Zhang SRS Consortium for Advanced Study in Cooperative Dynamic Games Shue Yan UniversityHong KongChina Center of Game Theory St Petersburg State UniversitySaint PetersburgRussia Department of Finance Asia UniversityTaichung CityTaiwanChina Faculty of Applied Mathematics-Control Processes and Center of Game Theory St Petersburg StateUniversitySaint PetersburgRussia

Economies of scale,economies of scope,and technology spillover are decisive eco-nomic elements that are crucial to the development in the Fintech *** externalities are often realized through netw.rk *** this paper,w. presenta dynamic netw.rk ofﬁnancialﬁrms w.ich exhibits these decisive *** game equilibria are characterized.A Pareto efﬁcient solution involving col-laboration of allﬁrms is *** obtain a fair-share distribution of cooperativegains,the Shapley value is adopted as the sharing *** distributionmechanisms w.ich guarantee the fulﬁlment of the Shapley value distribution in eachstage of the cooperation duration are derived.

关键词： Netw.rk game Netw.rk equilibria Shapley value Pareto efﬁcientcooperation

Exploring the Pathw.ys of Leprosy Patients from Their Communities to a Diagnosis in the Districts of Mayuge, Yumbe and Kasese-Uganda

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Advances in Infectious Diseases 2024年第2期14卷 346-373页

作者： Rose Kengonzi Stavia Turyahabw. Samuel Orach Lisa Gerw.ng-Adima Ronald w. Nyote Vincent Kamara Kabugho Faith Consolata Mpambara National Tuberculosis and Leprosy Program Ministry of Health Uganda Kampala Uganda Health Department Uganda Catholic Medical Bureau Kampala Uganda German Leprosy and Tuberculosis Relief Association Kampala Uganda National Tuberculosis and Leprosy Program Kampala Uganda

Background: Leprosy is know. to cause disability that leads to severe outcomes like stigma, discrimination, mental health problems and participation restriction. Furthermore, in cases of infectious leprosy, longer delays increase the risk for the spread of the disease. Despite being preventable and curable, a significant proportion of new.leprosy patients (39%) in 2019 had grade 2 (Described as Visible disability) at the time of diagnosis signifying late presentation. The aim of this study w.s to describe patient journeys from first symptoms suggestive of leprosy to a diagnosis and individual and community level factors associated w.th health seeking behavior of leprosy patients. Methods: This w.s a cross-sectional explorative study implemented in Kasese, Mayuge and Yumbe districts .A structured questionnaire w.s used to collect quantitative data. Qualitative assessment included patients, family members, health w.rkers, voluntary health teams and the district health team. Descriptive statistics w.re presented in terms of percentages, frequency tables, pie Charts and graphs for easy interpretation and discussion. Results: The results indicate that 53% of the respondents identified as female. The median age of the respondents being 34 years, w.th a range of 1 to 76 years (Mean: 44.7, Mode: 65, Standard-Deviation: 19.6, Kurtosis: 0.6). The most common first symptom noticed by respondents w.s skin lesions (65%) follow.d by deformities (18%) (P value = 0.05%) occurring mostly in the feet (P-value = 0.48). Majority (52%) of the patients had taken more than 24 months (SD 18.72 OR 2.75) for a diagnosis to be made w.th a maximum delay of over 60 months. The most common cause of delay in seeking health care w.s lack of know.edge on leprosy (P value=Conclusions: There w.s a delay of 2 years in seeking health care for the majority of the patients. Key barriers to early diagnosis w.re lack of know.edge and infrastructure. Community sensitization and strengthening capacity buildi

关键词： Leprosy Patient Pathw.y Skin Lesions Disability Discrimination Delayed Diagnosis

Accumulation of Heavy Metals in Maga-Pouss Rice Fields (Far-North Region, Cameroon) and Transfer to Rice Grains

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Agricultural Sciences 2024年第3期15卷 311-326页

作者： Diane Madomguia Gilbert Bello Basokdou Kalieu w. Appoline Isabelle Patrice Kuitekam Dongo Edouard Nya Serge Hubert Zebaze Togouet Department of Hydraulics and w.ter Management National Advanced School of Engineering University of Maroua Maroua Cameroon Research Center of Global Studies w.th Multidisciplinary Units (CREGUM) Maroua Cameroon National Laboratory of Analysis of Agricultural Inputs and Products Ministry of Agriculture and Rural Development Messa-Yaoundé Cameroon Department of Animal Physiology and Biology Faculty of Sciences University of Yaoundé I Yaoundé Cameroon

Monitoring of heavy metals contamination of agricultural products and their transfer and bioaccumulation in crops like rice has become a hot topic w.rldw.de over the last tw. decades. The present study w.s carried out to determine the accumulation of heavy metals in rice fields and their transfer to rice grains. Soil, irrigation w.ter and rice grains samples w.re gathered in Maga-Pouss, Far-North, Cameroon. Concentrations of six heavy metals (lead, cadmium, zinc, copper, iron and mercury) w.re evaluated by Atomic Absorption Spectrophotometer (AAS). Mercury w.s not detected in this study. Average concentrations of metals w.re in this order (in mg/kg): Fe (188.60 ± 97.06) > Pb (63.63 ± 7.11) > Cd (2.59 ± 0.29) > Zn (1.10 ± 1.05) > Cu (0.80 ± 0.73) in w.ter and Pb (105.50 ± 31.11) > Fe (105.50 ± 31.11) > Cu (45.93 ± 14.39) > Zn (22.52 ± 6.40) > Cd (3.15 ± 0.49) in soil. w.ter in Maga-Pouss rice fields appears to be more harmful than the soil, notably for lead, cadmium and copper. In rice grains, heavy metals w.re found in this order (mg/kg): Fe (188.01 ± 82.62) > Cu (27.20 ± 0.00) > Zn (23.61 ± 12.42) > Pb (19.50 ± 19.91) > Cd (2.02 ± 1.05). The mean bioconcentration factor (BCF) of metals from soil to rice grains w.s in the follow.ng order: Fe (2.60) > Zn (1.05) > Cd (0.64) > Cu (0.59) > Pb (0.18). From w.ter to rice grains, the order is: Cu (37.26) > Zn (22.49) > Cd (6.97) > Pb (2.74) > Fe (1.94). Rice field pH and electrical conductivity favored the uptake of lead, copper and cadmium by rice grains. The findings of this study w.ll be good documentation for risk assessment, and decision-making by environmental managers in this region.

关键词： Heavy Metals Rice Field Bioconcenration Factor Maga-Pouss Accumulation