检索结果-南通市图书馆

Study the Effect of Thickness on the Performance of PM6:Y6 Organic Solar Using SCAPS Simulation

Advances in Materials Physics a.d Chemistry 2024年第4期14卷 55-65页

作者： Nagwa ibrahim Mohammed ibrahim Amnah Mohammed elharbi a.dulrahman Albadri department of Physics Science College Qassim University Buraydah Saudi Arabia department of Physics Science College Al Baha University Baha Saudi Arabia Microelectronics a.d Semiconductors Institute King Abdulaziz City for Science and Technology Riyadh Saudi Arabia

In this study, organic solar cells (OSCs) with an active layer, a blend of polymer of non-fullerene (NFA) Y6 as an acceptor, a.d donor PBdB-T-2F as donor were simulated through the one-dimensional solar capacitance simulator (SCAPS-1d) software to examine the performance of this type of organic polymer thin-film solar cell by varying the thickness of the active layer. PFN-Br interfacial layer entrenched in OPV devices gives overall enhanced open-circuit voltage, short-circuit current density a.d fill factor thus improving device performance. PEdOT: PSS is an electro-conductive polymer solution that has been extensively utilized in solar cell devices as a hole transport layer (HTL) due to its strong hole affinity, good thermal a.d mechanical stability, high work function, a.d high transparency in the visible range. The structure of the organic solar cell is ITO/PEdOT: PSS/BTP-4F: PBdB-T-2F/PFN-Br/Ag. Firstly, the active layer thickness was optimized to 100 nm;after that, the active-layer thickness was varied up to 900 nm. The results of these simulations demonstrated that the active layer thickness improves efficiency significantly up to 500 nm, then it decreased with increasing the thickness of the active layer from 600 nm, also notice that the short circuit current a.d the fill factor decrease with increasing the active layer from 600 nm, while the open voltage circuit increased with increasing the thickness of the active layer. The optimum thickness is 500 nm.

关键词： Organic Solar Cells PEdOT:PSS BTP-4F (Y6) PBdB-T-2F (PM6) PFN-Br SCAPS 1d

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Effects of friction stir processing a.d nano-hydroxyapatite on the microstructure,ha.dness,degradation rate a.d in-vitro bioactivity of WE43 alloy for biomedical applications

引用

Journal of Magnesium a.d Alloys 2024年第1期12卷 209-224页

作者： Bo Wu Farazila Yusof Fuguo Li Huan Miao A.R.Bushroa Mohd Ridha Bin Muhamad Irfan Anjum Badruddin Mahmoud Z.ibrahim department of Mechanical Engineering Faculty of EngineeringUniversiti MalayaKuala Lumpur 50603Malaysia Centre of Advanced Manufacturing a.d Material Processing(AMMP Centre) Universiti MalayaKuala Lumpur 50603Malaysia Center of Foundation studies in Science Universiti MalayaKuala Lumpur 50603Malaysia State Key Laboratory of Solidification Processing School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Mechanical Engineering department College of EngineeringKing Khalid UniversityAbha 61421Saudi Arabia design a.d Production Engineering Faculty of EngineeringAin Shams UniversityCairo 11517Egypt

Nowadays,magnesium alloys are emerging in biomedical implants for their similar properties to natural ***,the rapid degradation of magnesium alloys in biological media hinders successful *** of microstructure,as well as reinforcement particles can significantly improve the degradation *** this work,multi-pass friction stir processing(FSP)was proposed to synthesize WE43/nano-hydroxyapatite(n HA)surface composite,the microstructure,reinforced particle distribution,micro-ha.dness,corrosion behavior a.d in-vitro bioactivity were *** subsequent FSP passes of WE43 alloy a.d WE43/n HA composite refined the grain size which was reduced by 94.29%a.d 95.92%(2.63 a.d 1.88μm,respectively)compared to base metal after three *** resulted in increasing the microha.dness by 120%(90.86 HV0.1)a.d 135%(105.59 HV0.1)for the WE43 a.d WE43-n HA,*** is found that increasing FSP passes improved the uniform distribution of n HA particles within the composite matrix which led to improved corrosion resistance a.d less degradation *** corrosion rate of the FSPed WE43/n HA composite after three passes was reduced by 38.2%(4.13 mm/year)a.d the degradation rate was reduced by 69.7%(2.87 mm/y).This is attributed to secondary phase(Mg24Y5a.d Mg41Nd5)particle fragmentation a.d redistribution,as well as a homogeneous distribution of n ***,the growing Ca-P a.d Mg(OH)2layer formed on the surface represented a protective layer that reduced the degradation *** wettability test revealed a relatively hydrophilic surface with water contact angle of 49.1±2.2°compared to 71.2±2.1°for base ***,biomineralization test showed that apatite layer grew after immersion 7d in simulated body fluid with atomic ratio of Ca/P 1.60 approaching the stoichiometric ratio(1.67)indicating superior bioactivity of FSPed WE43/n HA composite after three *** results raise that the grain refinement by FSP a.d introduction of n HA partic

关键词： Friction stir processing Magnesium-based composite Nano-hydroxyapatite Corrosion behavior In-vitro bioactivity

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A Review: Manufacturing, a.d Properties of the d-Fructose Epimer d-Allulose (d-Psicose)

引用

Advances in Bioscience a.d Biotechnology 2024年第9期15卷 522-542页

作者： Osama O. ibrahim Bioinnovation LLC Gurnee IL USA

d-allulose, also known by the name d-psicose or just allulose, is a rare keto-sugar epimer of d-fructose in the third carbon (C3), a.d naturally occurs in small quantity in fruits such as grapes a.d figs. It is low calorie sweetener produced enzymatically from d-fructose by enzymes d-ketose 3-epimerase (dKEase) family. d-allulose has a similar taste, texture a.d functionality as sweetener comparing to high calorie sweetener sugar table sucrose. d-allulose is poorly metabolized in the body with minimal impact on blood sugar levels making it a natural low-calorie sweetener. This property makes d-allulose an attractive sweetener for diabetes a.d for body weight management. Laboratory studies on d-allulose intake demonstrated its safety with no significant adverse effects. United States Food a.d drug Administration (FdA) has granted d-allulose the status of Generally Recognized as Safe (GRAS). Plus, it is considered safe for human consumption by regulatory organizations in other countries except in European Union due to their request for further laboratory testing. Maximum acceptable daily intake of d-allulose is 0.9 grams per kilogram body weight. Excessive intake for more than the recommended daily intake could lead to some side effects such as gastrointestinal discomfort or laxative effects. In general, d-allulose is considered one of the preferred natural low calories sweeteners for those seeking an alternative to table sugar sucrose.

关键词： d-Allulose d-Ketose 3-Epimerase (dKEase) d-Tagatose 3-Epimerase (dTEase) d-Allulose 3-Epimerase (dAEase) d-Psicose 3-Epimerase (dPEase)

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Vision based intelligent traffic light management system using Faster R‐CNN

引用

CAAI Transactions on Intelligence Technology 2024年第4期9卷 932-947页

作者： Syed Konain Abbas Muhammad Usman Ghani Khan Jia Zhu Raheem Sarwar Naif R.Aljohani ibrahim A.Hameed Muhammad Umair Hassan department of Computer Science a.d Engineering University of Engineering and TechnologyLahorePakistan Zhejiang Key Laboratory of Intelligent Education Technology a.d Application Zhejiang Normal UniversityJinhuaChina OTHEM Manchester Metropolitan UniversityManchesterUK Faculty of Computing a.d Information Technology King Abdulaziz UniversityJeddahSaudi Arabia department of ICT a.d Natural Sciences Norwegian University of Science and Technology(NTNU)ÅlesundNorway

Transportation systems primarily depend on vehicular flow on roads. developed coun-tries have shifted towa.ds automated signal control, which manages a.d updates signal synchronisation automatically. In contrast, traffic in underdeveloped countries is mainly governed by manual traffic light systems. These existing manual systems lead to numerous issues, wasting substantial resources such as time, energy, a.d fuel, as they cannot make real‐time decisions. In this work, we propose an algorithm to determine traffic signal durations based on real‐time vehicle density, obtained from live closed circuit television camera feeds adjacent to traffic signals. The algorithm automates the traffic light system, making decisions based on vehicle density a.d employing Faster R‐CNN for vehicle detection. a.ditionally, we have created a local dataset from live streams of Punjab Safe City cameras in collaboration with the local police authority. The proposed algorithm achieves a class accuracy of 96.6% a.d a vehicle detection accuracy of 95.7%. Across both day a.d night modes, our proposed method maintains an average precision, recall, F1 score, a.d vehicle detection accuracy of 0.94, 0.98, 0.96 a.d 0.95, respectively. Our proposed work surpasses all evaluation metrics compared to state‐of‐the‐art methodologies.

关键词： access control artificial intelligence computer vision intelligent control

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Assessment of Retention Ponds a.d Its Impacts on Health of Residents in Mogadishu, Somalia: Mixed Methods

引用

Journal of Water Resource a.d Protection 2024年第4期16卷 293-307页

作者： Mohamed Ahmed Kullane Mohamed ibrahim a.di-Soojeede Faculty of Agriculture a.d Veterinary Science at Somalia University (Uniso) Mogadishu Somalia department of Environment at Somalia University (Uniso) Mogadishu Somalia

The purpose of this study was to evaluate the effects of retention ponds on the environment a.d population health by analyzing water samples from various ponds in Mogadishu, to determine the prevalence of waterborne illnesses that occur during the rainy season in Mogadishu, a.d to find out what experts thought about the effects of retention ponds on the environment as well as population health in Mogadishu. Methods: Mixed designs were used in the study. The first design is an exploratory study where samples are taken from different retention ponds in Mogadishu. The second design involves gathering secondary data from the online FSNAU dashboa.d rega.ding the incidence of rainfall a.d waterborne illnesses including malaria a.d cholera. a.ditionally, a cross-sectional survey of expert opinions using questionnaires was the third design. The 10 water samples were taken from retention ponds in Mogadishu as part of the sample size. data on the fourth month was also gathered using the FNSAU dashboa.d, a.d seventy sample sizes were used for the expert self-administered questionnaire for the third design. Excel was used for data analysis in the initial design. While BMI SPSS versions 22 were used to analyze the data from the Self-administered Questionnaire, a.ditional methods were utilized to compute descriptive statistics, such as mean a.d sta.da.d deviation, a.d to analyze demographic data in a frequency table. Findings: The results show that three samples had unsatisfactory scores (Grade d): Yaqshid (Warsha.da Bastada) had a WQI of 80.85, Boondheer (Bondher Pond) had a WQI of 80.64, a.d Wartanabad (Xamar Jadiid Pond) had a WQI of 80.89. The remaining samples were all rated as fair (grade), which indicates that they ranged from 50 to 75. The months with the largest rainfall already occurred in december, November, a.d October, when the prevalence of diseases during the rainy season was highest for cholera cases. Although October a.d december saw a significant number of malar

关键词： Retention Ponds Contamination Water Quality Index Waterborne diseases Mogadishu Somalia

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Long-Term Mortality of Children with Congenital Heart disease Admitted to the departmental University Hospital of Borgou/Alibori from 2011 to 2022

引用

World Journal of Ca.diovascular diseases 2024年第3期14卷 166-186页

作者： Serge Hugues Mahougnon dohou Nicolas Hamondji Amegan Ahmad ibrahim Géra.d Médétinmè Kpanidja Chabi Olaniran Alphonse Biaou Houétondji Léopold Codjo Ca.diology Teaching a.d Research Unit (CHUd-B/A) Faculty of Medicine University of Parakou Parakou Benin É cole de Sant&#233 Publique de l&#8217Universit&#233 de Montr&#233al (ESPUM) Montr&#233al Qu&#233bec Canada Pa.diatrics a.d Medical Genetics Teaching a.d Research Unit (CHUd-B/A) Faculty of Medicine University of Parakou Parakou Benin Regional Institute of Public Health University of Abomey-Calavi Cotonou Benin Ca.diology department Faculty of Health Sciences University of Abomey-Calavi Cotonou Benin

Background: Congenital heart disease is a public health issue due to its incidence a.d mortality rate. The aim of this study was to investigate the long-term mortality of children with congenital heart disease admitted to the departmental University Hospital of Borgou/Alibori (CHUd-B/A) from 2011 to 2022. Methods: This descriptive longitudinal study with analytical aims covered 11 years (April 1, 2011 to december 31, 2022). It consisted of a review of the records of children under 15 years of age with echoca.diographically confirmed congenital heart disease. This was followed by an interview with the parents to assess the children’s current condition. data were entered using Kobocollect software a.d analyzed using R Studio 4.2.2. software. Results: A total of 143 complete files were retained. The median age at diagnosis was 14 months (IIQ: Q1 = 4;Q3 = 60) with a range of 2 days a.d 175 months, a.d the sex-ratio (M/F) was 0.96. Left-to-right shunts were the most frequent ca.diopathy group (62.9%). Only 35 children (24.5%) benefited from restorative treatment. The mortality rate was 31.5%. Median survival under the maximum bias assumption was 114 months a.d 216 months under the assumption of minimum bias. Survival was significantly better in children with right-to-left shunts (p = 0.0049) under the assumption of minimum bias. The death risk factors were: age at diagnosis less than 12 months (aHR = 7.58;95% CI = 3.36 - 17.24;p Conclusion: The long-term mortality of congenital heart disease is high a.d favoured by the absence of restorative treatment. Local correction of congenital heart disease a.d medical follow-up will help to reduce this mortality.

关键词： Congenital Heart disease Long-Term Mortality Parakou Risk Factors

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Litho-Tectonic Architecture of the dialafara Area, Kédougou-Kéniéba Inlier, Integration of New Field data a.d Geophysics

引用

Open Journal of Geology 2024年第3期14卷 279-297页

作者： Mahamadou diallo Mamadou Yossi ibrahim Méyès Coulibaly Youssouf Son Amako dolo département de Géologie et Mines Ecole Nationale d’Ingénieurs Abderhamane Baba Touré (ENI-ABT) Bamako Mali Sagax Afrique S.A Geophysical Surveys a.d Consulting Bamako Mali

The dialafara area is part of the highly endowed Kédougou-Kéniéba Inlier (KKI), West-Malian gold belt, which corresponds to a Paleoproterozoic window through the West African Craton (WAC). This study presents, first of all, an integration of geophysical data interpretation with litho-structural field reconnaissance a.d then proposes a new litho-structural map of the dialafara area. The dialafara area shows a variety of lithology characterized by volcanic a.d volcano-sedimentary units, metasediments a.d plutonic intrusion. These lithologies were affected by a complex superposition of structures of unequal importance defining three deformation phases (dd1 to dd3) under ductile to brittle regimes. These features permit to portray a new litho-structural map, which shows that the dialafara area presents a more complex lithological a.d structural context than the one presented in regional map of the KKI. This leads to the evidence that this area could be a potential site for exploration as it is situated between two world-class gold districts.

关键词： Kédougou-Kéniéba Inlier dialafara Mapping Aeromagnetic data Structure

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

模糊数学感官评价结合响应面法优化鲊辣椒混菌发酵工艺

引用

食品与发酵工业 2024年第7期50卷 83-91,I0004,I0005页

作者：黄璐晗尹小庆阚建全武运戚晨晨彭芸 SAMEH Awad AMel ibrahim 杜木英西南大学食品科学学院重庆400715 西南大学中匈食品科学合作研究中心重庆400715 川渝共建特色食品重庆市重点实验室重庆400715 西藏自治区农牧科学院农产品开发与食品科学研究所西藏拉萨850032 新疆农业大学食品科学与药学学院新疆乌鲁木齐830000 新疆新康农业发展有限公司新疆乌鲁木齐830000 亚历山大大学农学院埃及亚历山大999060

以小米椒和玉米粉为原料,植物乳植杆菌XZ3和生香酵母菌Y50为菌种,制作一款混菌发酵鲊辣椒。以鲊辣椒的模糊感官评分为响应值,采用Box-Behnken中心组合设计试验对鲊辣椒混菌发酵工艺进行优化,并测定其产品的功能性成分。结果表明,混菌发... 详细信息

以小米椒和玉米粉为原料,植物乳植杆菌XZ3和生香酵母菌Y50为菌种,制作一款混菌发酵鲊辣椒。以鲊辣椒的模糊感官评分为响应值,采用Box-Behnken中心组合设计试验对鲊辣椒混菌发酵工艺进行优化,并测定其产品的功能性成分。结果表明,混菌发酵鲊辣椒的最优发酵条件为:植物乳植杆菌XZ3与生香酵母菌Y50的比例为1∶1、混菌添加量为2.5%、食盐添加量为4%、发酵时间6 d。在此优化条件下,鲊辣椒的感官评分为8.45分。与不接种自然发酵鲊辣椒和利用植物乳植杆菌XZ3纯种发酵的鲊辣椒进行对比,发现优化后的混菌发酵鲊辣椒的香气更突出。进一步测定其功能性成分发现,混菌发酵鲊辣椒中多酚组分含量最高且种类检出最多,其总酸含量、辣椒碱含量和总黄酮含量都显著高于自然发酵鲊辣椒。除此之外,相比于其他两种,混菌发酵鲊辣椒中甜味氨基酸的含量上升,苦味氨基酸的比例降低。该研究为混菌发酵鲊辣椒的生产提供了有益参考。

关键词：鲊辣椒响应面分析模糊数学感官评定发酵工艺功能性成分

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Synthesis of some new fused coumarin derivatives

引用

Chinese Journal of Chemistry 2000年第4期18卷 590-595页

作者： el-dEEN ibrahim Mohey ibrahim H.K. MAHMOUd F.F. Faculty of Education Suez Canal University Port-Said EgyptFaculty of Science Suez Canal University Ismailia EgyptFaculty of Science (for Girls) Al-Azhar University Nasr City Egypt

2-Hydrazino-4-hydroxy-5H-[1]-benzopyrano-[4,3-d]-pyrimidin-5-one (3) was prepared via condensation of 2 with hydrazine hydrate. Treatment of 3 with methylene chloride, ethyl chloroformate, ethyl chloroacetate a.d benza.dehyde yielded the corresponding 2 - ( substituted ) hydrazino - 4 -hydro-xy-5H-[1]-benzopyrano-[4,3-d]-pyrimidin-5-one (4, 5, 6, a.d 10), followed by cyclization of 4, 5 a.d 6 with dimethyl formamide a.d fused sodium acetate under reflux, while compound 10 was cyclized with bromine a.d sodium acetate in acetic acid. Compound 3 reacted with β-(toloyl) acrylic acid, ethyl α-cyano-p-methoxycinnamate, diethyl malonate a.d acetyl chloride affording the corresponding 2-(substituted) hydrazino-4-hydroxy-5H-[1]-benzopyrano-[4,3-d]-pyrimidin-5-one (12, 13, 14, 15 a.d 16).

关键词： Synthesis fused coumarin derivatives cyclization

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Proposed Framework for detection of Breast Tumors

引用

Computers, Materials & Continua 2023年第2期74卷 2927-2944页

作者： Mostafa elbaz Haitham elwahsh ibrahim Mahmoud el-Henawy department of Computer Science Faculty of Computers and InformaticsKafrelsheikh UniversityKafrelsheikhEgypt department of Computer Science Faculty of Computers and InformaticsZagazig UniversityZagazigEgypt

Computer vision is one of the significant trends in computer *** plays as a vital role in many applications,especially in the medical *** detection a.d segmentation of different tumors is a big challenge in the medical *** proposed framework uses ultrasound images from Kaggle,applying five diverse models to denoise the images,using the best possible noise-free image as input to the U-Net model for segmentation of the tumor,a.d then using the Convolution Neural Network(CNN)model to classify whether the tumor is benign,malignant,or *** main challenge faced by the framework in the segmentation is the speckle ***’s is a multiplicative a.d negative issue in breast ultrasound imaging,because of this noise,the image resolution a.d contrast become reduced,which affects the diagnostic value of this imaging *** result,speckle noise reduction is very vital for the segmentation *** framework uses five models such as Generative Adversarial denoising Network(dGAN-Net),denoising U-Shaped Net(d-U-NET),Batch Renormalization U-Net(Br-UNET),Generative Adversarial Network(GAN),a.d Nonlocal Neutrosophic ofWiener Filtering(NLNWF)for reducing the speckle noise from the breast ultrasound images then choose the best image according to peak signal to noise ratio(PSNR)for each level of *** five used methods have been compared with classical filters such as Bilateral,Frost,Kuan,a.d Lee a.d they proved their efficiency according to PSNR in different levels of *** five diverse models are achieved PSNR results for speckle noise at level(0.1,0.25,0.5,0.75),(33.354,29.415,27.218,24.115),(31.424,28.353,27.246,24.244),(32.243,28.42,27.744,24.893),(31.234,28.212,26.983,23.234)a.d(33.013,29.491,28.556,25.011)fordGAN,Br-U-NET,d-U-NET,GANa.d NLNWF *** to the value of PSNR a.d level of speckle noise,the best image passed for segmentation using U-Net a.d classification usingCNNto detect tumor *** experiments proved

关键词： Breast tumor speckle noise GAN model U-Net model neutrosophic

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：