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Asian Pacific Journal of Tropical medicine 2010年第6期3卷 451-453页

作者： Stephen ed Nsimba Phare G mujinja Prospective College of Health & Allied Sciences(CHAS) School Of MedicineP.O.Box 395DodomaTanzania-East Africa muhimbili University of Health and Allied Sciences School of Public Health & Social SciencesP.O.Box 65015Dar-es-Salaam Tanzania

Objective:To observe and assess the compliance to sulfadoxine-pyrimethamine(SP) one and a half years after phasing out chloroquine(CQ) in mkuranga District,Coast region,Tanzania. methods:A randomly controlled baseline community study was conducted in rural areas of mkuranga district,***-structured questionnaire consisted of open-and closed -ended questions including home stocking,home use,last fever episodes and treatment of underfives with malaria using CQ or ***:The prevalence of fever or reported fever rate during the last 48 hours by their mothers or guardians was high(70%).Of all 117 blood samples,only 8 children after drug analysis were found to have CQ and 13 had SP concentrations within their blood *** of these blood drug levels were above therapeutic ranges. Conclusions:Community interventions are urgently needed in rural communities and should specifically target households nucleus on early malaria fever recognition and provision of recommended antimalarials for the sick underfive ***,sadly,there was an increase in underweight and undernourishment in the study areas,probably because of malaria in the area and poverty which are associated with poor nutrition in these youngsters.

关键词： malaria Sulfadoxine-pyrimethamine Complaince Choroquine

纺丝级PA66再生切片生产工艺优化及测试分析

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合成纤维 2024年第10期53卷 11-13,39页

作者：马军贞河南平棉纺织集团股份有限公司河南平顶山467000

研究了纺丝级聚酰胺66(PA66)再生切片的生产技术,对PA66再生切片的熔点、熔程、结晶度、热稳定性能和分子结构等性能进行了分析评价,并验证了PA66再生切片的纺丝性能。结果表明,通过优化PA66废料再利用工艺技术,减少造粒过程中的黏度降... 详细信息

研究了纺丝级聚酰胺66(PA66)再生切片的生产技术,对PA66再生切片的熔点、熔程、结晶度、热稳定性能和分子结构等性能进行了分析评价,并验证了PA66再生切片的纺丝性能。结果表明,通过优化PA66废料再利用工艺技术,减少造粒过程中的黏度降及杂质含量,制备的PA66再生切片能够满足纺丝要求,拓展了再生切片的应用领域,实现了循环利用和绿色发展。

关键词： PA66 再生切片循环再利用工艺技术

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不确定时期的收益多元化

财新周刊 2024年第28期 7-7页

作者： ed Perks 富兰克林入息投资

回顾过去六个月,高于预期的通胀数据导致市场对于2024年降息的预期发生转变。美联储3月份的经济预测摘要堪称完美。美联储预计国内生产总值增长将保持强劲,并维持在高于长期预期的水平。同样,尽管实施了紧缩政策,但美联储的决策者预计... 详细信息

回顾过去六个月,高于预期的通胀数据导致市场对于2024年降息的预期发生转变。美联储3月份的经济预测摘要堪称完美。美联储预计国内生产总值增长将保持强劲,并维持在高于长期预期的水平。同样,尽管实施了紧缩政策,但美联储的决策者预计未来几年的失业率不会显著上升。

关键词：失业率降息紧缩政策美联储国内生产总值增长收益多元化长期预期通胀

Operational guidance for aeration and flow augmentation for the Chicago Area Waterway System—A case study

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Water Science and Engineering 2023年第4期16卷 345-358页

作者： Charles S.melching Jennifer Wasik ed Staudacher Thomas minarik melching Water Solutions LLC GreenfieldWI 53221USA metropolitan Water Reclamation District of Greater Chicago ChicagoIL 60611USA metropolitan Water Reclamation District of Greater Chicago CiceroIL 60804USA

The Chicago Area Waterway System(CAWS)is a 133.9 km branching network of navigable waterways controlled by hydraulic structures,in which the majority of the flow is treated wastewater effluent and there are periods of substantial combined sewer *** CAWS comprises a network of effluent dominated *** stringent dissolved oxygen(DO)standards and a reduced flow augmentation allowance have been recently applied to the ***,a carefully calibrated and verified one-dimensional flow and water quality model was applied to the CAWS to determine emission-based real-time control guidelines for the operation of flow augmentation and aeration *** goal of these guidelines was to attain DO standards at least 95%of the ***“optimal”guidelines were tested for representative normal,dry,and wet *** finally proposed guidelines were found in the simulations to attain the 95%target for nearly all locations in the CAWS for the three test *** developed operational guidelines have been applied since 2018 and have shown improved attainment of the DO standards throughout the CAWS while at the same time achieving similar energy use at the aeration stations on the Calumet River system,greatly lowered energy use on the Chicago River system,and greatly lowered discretionary diversion from Lake michigan,meeting the recently enacted lower amount of allowed annual discretionary *** case study indicates that emission-based real-time control developed from a well calibrated model holds potential to help many receiving water bodies achieve high attainment of water quality standards.

关键词： Water quality modeling Water quality management Real-time control Stream aeration Flow augmentation Dissolved oxygen

基于三维并行多视野卷积神经网络的脑电信号情感识别

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传感技术学报 2024年第4期37卷 696-703页

作者：韩新龙高云园马玉良杭州电子科技大学自动化学院浙江杭州310018 浙江省脑机协同智能重点实验室浙江杭州310018

利用脑电信号识别情感状态已经成为当前的研究热门。现有的情感识别方法通常提取二维信息作样本,却忽略了包含大脑不同区域重要特征的空间信息。针对这个问题,结合脑电通道间布局和原始脑电信号中的频率相关特征,提出了基于三维并行多... 详细信息

利用脑电信号识别情感状态已经成为当前的研究热门。现有的情感识别方法通常提取二维信息作样本,却忽略了包含大脑不同区域重要特征的空间信息。针对这个问题,结合脑电通道间布局和原始脑电信号中的频率相关特征,提出了基于三维并行多视野卷积神经网络(Three-dimensional Parallel multi-field Convolutional Neural Network, TPmCNN)的脑电情感识别新方法。首先将原始脑电信号划分成多频带,并提取每个频带的微分熵(DE)特征。接着将数据按照电极传感器的位置转变成三维特征矩阵。最后采用TPmCNN网络处理所得到的矩阵。实验结果表明,利用不同频带的微分熵特征构造的三维特征矩阵,能够有效地提取多通道脑电信号中与情感识别有关的特征,所提出的并行多视野卷积神经网络能够充分发挥出深度学习的优势。实验在公开数据集DEAP上进行二分类,在唤醒和效价的准确率分别达到了97.31%和96.72%,四分类的准确率达到了97.17%,证实了所提出的方法对脑电信号情感识别的优越性能。

关键词：情感识别三维特征多视野卷积神经网络并行网络

Energy Guarantee Scheme for Real-time Systems with Energy Harvesting Constraints

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International Journal of Automation and computing 2019年第3期16卷 354-368页

作者： Hussein el Ghor maryline Chetto Laboratory of Embedded and Networked Systems Faculty of TechnologyLebanese UniversityB.P.813 SaidaLebanon Laboratory of Numerical Sciences of Nantes University of Nantes2 Avenue of Professor Jean Rouxel4475 CarquefouFrance

The growth of environmental energy harvesting has been explosive in wireless computing systems especially when replacing or recharging batteries manually is *** work investigates the scheduling of periodic weekly hard real-time tasks under energy *** on this motivation,we proposed a real-time scheduling algorithm,namely energy guarantee dynamic voltage and frequency scaling(EG-DVFS),that utilizes the earliest deadline-harvesting(ed-H)scheduling algorithm combined with dynamic voltage and frequency *** one is qualified as real-time since tasks must satisfy their timing *** assume that the preemptable tasks receive dynamic priorities according to the earliest deadline first(edF)***-DVFS adjusts the processor's behavior by characterizing the properties of the energy source module,capacity of the stored energy as well as the harvested energy in a future ***,tasks are executed at full processor speed if the amount of energy in the battery is enough to finish its ***,the processor slows down task execution to the lowest possible processor speed while still guaranteeing to meet all the timing ***-DVFS mainly depends on the on-line computation of the slack time and the slack energy with dynamic voltage and frequency selection in order to achieve an improved system *** results show that EG-DVFS can achieve capacity savings up of up to 33%when compared to ed-H.

关键词： Real-time systems energy harvesting embedded systems power management dynamic voltage and frequency selection(DVFS) ed-H scheduler

Keypoint Description Using Statistical Descriptor with Similarity-Invariant Regions

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Computer Systems Science & Engineering 2022年第7期42卷 407-421页

作者： Ibrahim.el rube Sameer Alsharif Department of Computer Engineering College of Computers and Information TechnologyTaif UniversityP.o.Box 11099Taif21944Saudi Arabia

This article presents a method for the description of key points using simple statistics for regions controlled by neighboring key points to remedy the gap in existing ***,the existent descriptors such as speeded up robust features(SURF),Kaze,binary robust invariant scalable keypoints(BRISK),features from accelerated segment test(FAST),and oriented FAST and rotated BRIEF(ORB)can competently detect,describe,and match images in the presence of some artifacts such as blur,compression,and ***,the performance and reliability of these descriptors decrease for some imaging variations such as point of view,zoom(scale),and *** intro-duced description method improves image matching in the event of such *** utilizes a contourlet-based detector to detect the strongest key points within a speciﬁed window *** selected key points and their neighbors con-trol the size and orientation of the surrounding regions,which are mapped on rec-tangular shapes using polar *** resulting rectangular matrices are subjected to two-directional statistical operations that involve calculating the mean and standard ***,the descriptor obtained is invariant(translation,rotation,and scale)because of the two methods;the extraction of the region and the polar transformation techniques used in this *** descrip-tion method introduced in this article is tested against well-established and well-known descriptors,such as SURF,Kaze,BRISK,FAST,and ORB,techniques using the standard OXFORD *** presented methodology demonstrated its ability to improve the match between distorted images compared to other descriptors in the literature.

关键词： Keypoint detection descriptors neighbor region similarity invariance

固相萃取-超高效液相色谱-串联质谱法同时测定水中61种激素

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色谱 2024年第9期42卷 866-874页

作者：陈月琴马明徐红丹潘春燕江苏联合职业技术学院无锡卫生分院江苏无锡214000 无锡市疾病预防控制中心江苏无锡214023

甾体激素类的污染及危害问题不容忽视,为了实现更加全面、准确的高通量分析,研究建立了固相萃取-超高效液相色谱-串联质谱同时测定水中糖皮质激素类(48种)、盐皮质激素类(1种)、雄激素类(4种)及孕激素类(8种)等共61种激素成分的多残留... 详细信息

甾体激素类的污染及危害问题不容忽视,为了实现更加全面、准确的高通量分析,研究建立了固相萃取-超高效液相色谱-串联质谱同时测定水中糖皮质激素类(48种)、盐皮质激素类(1种)、雄激素类(4种)及孕激素类(8种)等共61种激素成分的多残留分析方法。采用HC-C18固相萃取柱对大体积(1 L)水样中的目标化合物进行富集净化,乙腈洗脱,以BEH C18色谱柱分离,以01%甲酸水溶液和乙腈为流动相梯度洗脱,用超高效液相色谱-串联质谱仪分离和检测。质谱采用电喷雾正离子电离、多反应监测模式,外标法定量。61种激素在相应的范围内,线性关系良好,相关系数均大于099,方法检出限为005~150 ng/L,在低、中、高3个加标水平下的回收率为623%~1252%,相对标准偏差为11%~105%。将建立的方法应用于太湖流域的地表水、相关区域的地下水以及末梢水的分析,部分地表水和地下水中检出了可的松、丙酸氟替卡松、环索奈德、倍他米松双丙酸酯、氯倍他松丁酸酯、戊酸双氟可龙、卤倍他索丙酸酯、异氟泼尼龙、二氟孕甾丁酯和己酸羟孕酮等10种成分,其余51种成分未检出。该方法操作简单,灵敏度高,准确度好,对后续水安全的监测以及溯源调查有重要意义。对水中激素水平进行了地区分析,提出了未来污水处理工艺应将激素残留作为目标物进行针对性处理的建议。

关键词：超高效液相色谱-串联质谱固相萃取激素水

Design and Parametric Simulation of a miniaturized PIFA Antenna for the PCS Band

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Wireless Engineering and Technology 2013年第2期4卷 105-111页

作者： Abdelhakim.elouadih Ahmed Oulad-Said moha mrabet Hassani Department of electrical and Telecommunications Engineering Royal Air Academy (ERA) Marrakesh Morocco Department of Physics Semlalia University of Sciences (FSSM) Marrakesh Morocco

This paper describes the design and simulation by HFSS simulator of a probe-fed Planar Inverted-F Antenna (PIFA) for the use in PCS band [1850 mHz - 1990 mHz]. A methodology based on parametric simulations (parameters are ground plan dimensions, height of radiating plate, feeding point position, shorting plate dimensions and positioning) was used to design optimized antenna. The simulation allowed the characterization of the designed antenna and the computing of different antenna parameters like S11 parameter, resonant frequency, SWR, bandwidth impedance in feeding point, gain, 2D and 3D diagram pattern, Fields distribution. The simulation results are interesting and respect the mean PCS requirements.

关键词： PCS HFSS PIFA Patch Antenna Parametric Simulation

Synthesis and applications of lanthanoid complexes of pentadentate and hexadentate N_(5) and N_(6) macrocycles:A review

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Journal of Rare Earths 2024年第1期42卷 1-15,I0001页

作者： Julio Corredoira-Vázquez Cristina González-Barreira Paula Oreiro-martínez Ana m.García-Deibe Jesús Sanmartín-matalobos matilde Fondo Departamento de Química Inorganica Facultade de QuímicaUniversidade de Santiago de CompostelaCampus Vida15782Santiago de CompostelaSpain Phantom-g CICECO-Aveiro Institute of MaterialsDepartment of PhysicsUniversity of Aveiro3810-193AveiroPortugal Institute of materials(imaTUS) Universidade de Santiago de Compostela15782Santiago de CompostelaSpain

In this paper,the lanthanoid complexes of N_(5) and N_(6) macrocycle ligands,without pendant arms or additional heteroatoms,are *** review covers the period from 2015 to the current date,since in 2014 Schiff base macrocyclic ligands incorporating the pyridine moiety,and their complexes,were revised,and in 2015 the chemistry of pentaaza macrocycle ligands with rare earth metals was also *** and phthalocyanine ligands are not included in this review,which primarily focuses on complexes with Schiff bases and amines without pendant arms or any additional donor other than *** synthetic methods,structural characterization,based on single X-ray crystal data,and properties of the lanthanoid complexes,with special attention to magneto-structural correlations,are presented herein.

关键词： Lanthanoid N_(5),N_(6)macrocycle Coordination chemistry Chirality Biological activity molecule magnet