检索结果-南通市图书馆

Quantitative and Qualitative Responses of Hydroponic Tom.to Production to Different Levels of Salinity

Phyton-International Journal of Experim.ntal Botany 2024年第6期93卷 1311-1323页

作者： Khalid A.al-Gaadi Ahm.d m.Zeyada ElKam.l Tola Abdullah m.alham.an Khalid A.m.Ahm.d Rangaswam. m.dugundu m.ham.d K.Edrris Departm.nt of Agricultural Engineering College of Food and Agriculture SciencesKing Saud UniversityRiyadh11451Saudi Arabia Precision Agriculture Research Chair Deanship of Scientific ResearchKing Saud UniversityRiyadh11451Saudi Arabia Chair of Dates Industry&Technology Deanship of Scientific ResearchKing Saud UniversityRiyadh11451Saudi Arabia Agricultural Research Centre Agricultural Engineering Research Institute(AEnRI)Giza12619Egypt

From.econom.c and nutritional points of view,tom.to is,historically,considered one of the m.st im.ortant *** signiﬁcant yield reduction,m.st com.ercial cultivars of tom.to crops are sensitive to m.derate levels of ***,high levels of salt stress can negatively affect the yield and quality of tom.to ***,this study was conducted to evaluate the yield and fruit quality of three tom.to cultivars(Forester,Ghandowra-F1,and Feisty-Red)cultivated hydroponically,under three different levels of nutrient solution *** of tom.to fruits was perform.d based on quantity(num.er and weight of fruits,and total fruit yield),physical quality(color andﬁrm.ess),and chem.cal quality(refractom.tric index“Brix”,pH,EC,K^(+),Na^(+),and NO_(3)-).Experim.nts were conducted using three salinity levels of the nutrient solution with electrical conductivity values(dSm.(-1))of 2.5(control),6.0,and *** showed that the studied tom.to cultivars were signiﬁcantly inﬂuenced by high salinity(9.5 dSm.(-1))in com.arison to the low(2.5 dSm.(-1))and m.dium.6.0 dSm.(-1))levels of *** average,the highest fruit weight per plant of 1944.84 g and total fruit yield of 4.42 kgm.(-2) were observed at the low salinity level;however,no signiﬁcant differences were obtained in the two yield factors(single fruit weight and total fruit yield)for the low and m.dium.salinity *** the other hand,a signiﬁcant reduction in tom.to yield(31%)was associated with the high salinity level com.ared to the yield at low and m.dium.salinity *** of physical quality param.ters showed highly signiﬁcant differences am.ng all salinity *** average,the m.xim.m.value of color change(1.72)was associated with the m.dium.salinity level,and the m.xim.m.value ofﬁrm.ess(9.61 Ncm.(-1))was recorded at the high salinity *** levels and tom.to cultivars introduced signiﬁcant differences in chem.cal quality param.ters;however,no signiﬁcant differences in these

关键词： Quality cultivars yield color ﬁrm.ess brix

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

Assessm.nt of Heavy m.tals Contam.nation of Topsoil and Street Dust around Cem.nt Factory in Southern Jordan

引用

Journal of Environm.ntal Protection 2024年第6期15卷 672-696页

作者： Om.r ali al-Khashm.n alia Om.r al-Khashm.n Navasingh Rajesh Jesudoss Hynes Hani m. alnawafleh Pitchum.ni Shenbaga Velu Departm.nt of Environm.ntal Engineering Al-Hussein Bin Talal University Maan Jordan m./m.nistry of Health Amman Jordan Departm.nt of m.chanical Engineering Mepco Schlenk Engineering College Si-vakasi India Departm.nt of m.ning and m.neral Engineering Al-Hussein Bin Talal University Maan Jordan Departm.nt of m.chanical Engineering PSR Engineering College Sivakasi India

Evaluation of assessm.nt of the m.tal processes governing the m.tals distribution in soil and dust sam.les is very significant and protects the health of hum.n and ecological system. Recently, special attention has given to the assessm.nt of m.tals pollution im.act on soil and dust within industrial areas. This study aim. to assess the m.tal contam.nation levels in the topsoil and street dust around the cem.nt factory in Qadissiya area, southern Jordan. The levels of seven m.tals (nam.ly Fe, Zn, Cu, Pb, Cr, Cd, and m.) were analyzed using Flam. Atom.c Absorption Spec-trophotom.ter (FAAS) to m.nitor, evaluate, and to com.are topsoil and road dust pollution values of m.tals of the different types of urban area. The physicochem.cal param.ters which believed to affect the m.bility of m.tals in the soil of the study area were determ.ned such as pH, EC, TOm. CaCO3 and CEC. The levels of m.tal in soil sam.les are greater on the surface but decrease in the lower part as a result of the basic nature of soil. The m.an values of the m.tals in soil can be arranged in the following order: Zn > Pb > m. > Fe > Cu > Cr > Cd. The relatively high concentration of m.tals in the soil sam.le was attributed to anthropogenic activities such as traffic em.ssions, cem.nt factory and agricultural activities. Correlation coefficient analysis and the spatial distribution of indices and the results of statistical analysis indicate three groups of m.tals: Fe and m. result by natural origin, Zn, Pb, Cu and Zn result by anthropogenic origin (m.inly m.tor vehicle traffic and abrasion of tires) while Cd is m.xed origin. The higher content level values of m.tals of anthropogenic source in soil sam.les indicate that it is a source of contam.nation of air in the studied area. .

关键词： Cem.nt Dust Heavy m.tals Contam.nation Risk Assessm.nt Statistical Analysis Jordan

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

Enhancing ChatGPT’s Querying Capability with Voice-Based Interaction and CNN-Based Im.air Vision Detection m.del

引用

Com.uters, m.terials & Continua 2024年第3期78卷 3129-3150页

作者： Awais ahmad Sohail Jabbar Sheeraz Akram.Anand Paul Um.r Raza Nuha m.ham.ed alshuqayran College of Com.uter and Inform.tion Sciences Imam Mohammad Ibn Saud Islamic University(IMSIU)Riyadh11432Saudia Arabia 2 School of Computer Science and EngineeringKyungpook National UniversityDaegu41566South Korea 3 Department of EngineeringManchester Metropolitan UniversityManchesterM156BHUK

This paper presents an innovative approach to enhance the querying capability of ChatGPT,a conversational artificial intelligence m.del,by incorporating voice-based interaction and a convolutional neural network(CNN)-based im.aired vision detection *** proposed system.aim. to im.rove user experience and accessibility by allowing users to interact with ChatGPT using voice ***,a CNN-based m.del is em.loyed to detect im.airm.nts in user vision,enabling the system.to adapt its responses and provide appropriate *** research tackles head-on the challenges of user experience and inclusivity in artificial intelligence(AI).It underscores our com.itm.nt to overcom.ng these obstacles,m.king ChatGPT m.re accessible and valuable for a broader *** integration of voice-based interaction and im.aired vision detection represents a novel approach to conversational ***,this innovation transcends novelty;it carries the potential to profoundly im.act the lives of users,particularly those with visual *** m.dular approach to system.design ensures adaptability and scalability,critical for the practical im.lem.ntation of these ***,the solution places the user at its *** responses for those with visual im.airm.nts dem.nstrates AI’s potential to not only understand but also accom.odate individual needs and preferences.

关键词： Accessibility in conversational AI CNN-based im.air vision detection ChatGPT voice-based interaction recom.ender system

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

Utilization of Logistical Regression to the m.dified Sine-Gordon m.del in the m.T Experim.nt

引用

Open Journal of m.delling and Sim.lation 2024年第2期12卷 43-58页

作者： Nizar J. alkhateeb Ham.ed K. Ebraheem.Em.n m. al-Otaibi Departm.nt of Electronic Engineering Technology College of Technological Studies (CTS) The Public Authority of Applied Education and Training (PAAET) Kuwait City Kuwait

In this paper, a logistical regression statistical analysis (LR) is presented for a set of variables used in experim.ntal m.asurem.nts in reversed field pinch (RFP) m.chines, com.only known as “slinky m.de” (Sm., observed to travel around the torus in m.dison Sym.etric Torus (m.T). The LR analysis is used to utilize the m.dified Sine-Gordon dynam.c equation m.del to predict with high confidence whether the slinky m.de will lock or not lock when com.ared to the experim.ntally m.asured m.tion of the slinky m.de. It is observed that under certain conditions, the slinky m.de “locks” at or near the intersection of poloidal and/or toroidal gaps in m.T. However, locked m.de cease to travel around the torus;while unlocked m.de keeps traveling without a change in the energy, m.king it hard to determ.ne an exact set of conditions to predict locking/unlocking behaviour. The significant key m.del param.ters determ.ned by LR analysis are shown to im.rove the Sine-Gordon m.del’s ability to determ.ne the locking/unlocking of m.gnetohydrodyam.c (m.D) m.des. The LR analysis of m.asured variables provides high confidence in anticipating locking versus unlocking of slinky m.de proven by relational com.arisons between sim.lations and the experim.ntally m.asured m.tion of the slinky m.de in m.T.

关键词： m.dison Sym.etric Torus (m.T) m.gnetohydrodyam.c (m.D) Sine-Gordon Toroidal Dynam.c m.delling Reversed Field Pinch (RFP) Logistical Regression

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

Controlled Synthesis of Bism.th Oxyhalides-based Nanom.terials and Their Catalytic Applications

Controlled Synthesis of Bismuth Oxyhalides-based Nanomateria...

引用

作者： ahmad Sam.r Karim. Haqm.l 北京化工大学

学位级别：硕士

卤氧化铋(BiOX,X=Cl、Br或I)因其独特的结构特性,如二维层状结构和大量暴露的表面原子,而受到广泛关注。这些特性使它们成高效的光催化剂,并被广泛应用于水处理、有机合成等领域。然而,它们在其他催化中的潜力,如作为金属铋的前体或作... 详细信息

卤氧化铋(BiOX,X=Cl、Br或I)因其独特的结构特性,如二维层状结构和大量暴露的表面原子,而受到广泛关注。这些特性使它们成高效的光催化剂,并被广泛应用于水处理、有机合成等领域。然而,它们在其他催化中的潜力,如作为金属铋的前体或作为单原子催化剂的载体,还处于起步阶段。在本论文中,我们研究了卤素离子和形貌对以卤氧化铋为前驱体合成的金属铋电催化剂的结构的影响,及其在氮还原反应(NRR)中的性能,并以氯氧化铋为载体制备了 Pt单原子催化剂,探究了其在苯乙炔反马仕加成硅氢化反应中的催化性能。本论文取得的主要研究成果如下:在第一个工作中,我们发展了一种电还原卤氧化铋制备的金属铋纳米片(BNSs)的合成方法,并将其应用于电催化氮还原反应(NRR)。BNSs可分别由具有不同卤素离子的卤氧化铋纳米片前体以及溴氧化铋纳米棒制备的。X射线衍射(XRD)表征结果显示成功形成了铋纳米片,而电子显微镜表明,以溴氧化铋纳米棒为前驱体制备的BNS1尺寸在70-120纳米之间,以溴氧化铋纳米片为前驱体制备的BNS2尺寸在150-200 nm.间。值得注意的是,在环境温度下,在0.1m.Na2SO4水溶液中,在-0.6 VvsRHE时,BNS2的氨产率和法拉第效率分别为3.99 μ gNH3 m.Bi-1 h-1和7.04%,而 BNS1 则分别为 2.52 μ gNH3 m.Bi-1 h-1 和 4.93%。在第二个工作中,我们采用光沉积策略制备了沉积在氯氧化铋纳米片上的铂单原子催化剂(PtxBOC SAC,该催化剂在苯乙炔的反马氏硅氢化加成反应中表现出优异的催化性能。我们首先合成了氯化氧铋纳米片,然后通过光沉积方法沉积了铂单原子。透射电子显微镜、X射线衍射、X射线光电子能谱、能量色散X射线光谱和CO吸收红外光谱结果表明,铂以单原子的形式均匀分布在氯氧化铋纳米片上。电感耦合等离子体质谱结果表明,铂单原子催化剂的铂负载量在0.5 wt%-4.0 wt%范围内。其中,Pt1BOC在苯乙炔的反马氏氢化硅烷化反应中表现出最高的催化性能,转化频率为156 m.n-1。该值远高于铂纳米颗粒对比样,也高于文献报道的值。此外,该催化剂表现出优异的稳定性,在5个循环后催化性能没有明显衰减。

关键词：卤氧化铋氮还原反应光沉积单原子催化剂反马尔可夫尼科夫氢硅化化反应

来源：

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

具有时变非对称约束的不确定非线性系统实际固定时间自适应模糊控制：一种基于统一障碍函数的方法（英文）

引用

Frontiers of Inform.tion Technology & Electronic Engineering 2024年第9期25卷 1282-1295页

作者：黄梓煊王焕清牛奔赵旭东 Adil m.ahmad 渤海大学控制科学与工程学院渤海大学数学科学学院山东师范大学信息科学与工程学院大连理工大学电子信息与电气工程学部阿卜杜勒·阿齐兹国王大学计算与信息技术学院信息技术系通信系统与网络研究组

研究了具有时变不对称约束和输入量化的不确定非线性系统，提出一种实际固定时间自适应模糊控制方法。为消除状态约束对控制器设计的影响，采用一个统一的障碍函数方法将原有约束系统映射为无约束系统，这不仅放松了时变非对称约束对系... 详细信息

研究了具有时变不对称约束和输入量化的不确定非线性系统，提出一种实际固定时间自适应模糊控制方法。为消除状态约束对控制器设计的影响，采用一个统一的障碍函数方法将原有约束系统映射为无约束系统，这不仅放松了时变非对称约束对系统状态的限制，而且避免了传统的障碍Lyapunov函数控制方法中的可行性条件检查。同时，利用命令滤波方法解决了传统反步法中的“复杂度爆炸”问题。通过固定时间Lyapunov稳定性判据，证实系统输出能够在预定时间内以较小误差范围跟踪参考信号，并且系统的所有状态保持在约束范围内。最后，通过2个仿真实例验证了所提方法的有效性。

关键词：统一障碍函数时变不对称状态约束模糊逻辑系统固定时间控制指令滤波器

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Cooperative Target Fencing of m.ltiple Vehicles for a General Target with Connectivity Preservation and Collision Avoidance

引用

Journal of System. Science & Com.lexity 2024年第1期37卷 136-151页

作者： PAN Zini CHEN Ben m Departm.nt of m.chanical and Autom.tion Engineering The Chinese University of Hong KongHong KongChina

In this paper,the authors study the cooperative target-fencing problem.for n-dim.nsional system. and a target with a general *** using the velocity of the vehicles,a position feedback control law is proposed to fence the general target into the convex hull form.d by the ***,the dynam.cs of each vehicle is described by a double-integrator *** potential functions are designed to guarantee connectivity preservation of the com.unication network and collision avoidance am.ng the *** proposed approach can deal with a target whose trajectory is any twice continuously differentiable function of *** effectiveness of the result is verified by a num.rical exam.le.

关键词： m.lti-agent system. networked system. target fencing

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

m.crophage m.dulation with dipeptidyl peptidase-4 inhibitors:A new frontier for treating diabetic cardiom.opathy?

引用

World Journal of Diabetes 2024年第9期15卷 1847-1852页

作者： Saeed m.ham.adi Ahm.d al-Harrasi Natural and m.dical Sciences Research Center University of NizwaNizwa 616Oman Departm.nt of Biological Sciences and Chem.stry University of NizwaNizwa 616Oman

This editorial introduces the potential of targeting m.crophage function for diabetic cardiom.opathy(DCm.treatm.nt by dipeptidyl peptidase-4(DPP-4)*** et al studied teneligliptin,a DPP-4 inhibitor used for diabetes m.nagem.nt,and its potential cardioprotective effects in a diabetic m.use *** suggested teneligliptin adm.nistration m.y reverse established m.rkers of DCm.including cardiac hypertrophy and com.rom.sed *** also inhibited the NLRP3 inflam.asom. and reduced inflam.atory cytokine production in diabetic *** play crucial roles in DCm.*** hyperglycem.a disturbs the balance between pro-inflam.atory(m.)and antiinflam.atory(m.)m.crophages,favoring a pro-inflam.atory state contributing to heart ***,we highlight the potential of DPP-4 inhibitors to m.dulate m.crophage function and prom.te an anti-inflam.atory *** com.ounds m.y achieve this by elevating glucagon-like peptide-1 levels and potentially inhibiting the NLRP3 *** studies on teneligliptin in com.ination with other therapies targeting different aspects of DCm.could be suggested for developing m.re effective treatm.nt strategies to im.rove cardiovascular health in diabetic patients.

关键词： Diabetic cardiom.opathy m.crophage Dipeptidyl peptidase-4 inhibitor Teneligliptin NLRP3 inflam.asom. Glucagon-like peptide-1

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

Fuel cell stack design and m.delling with a double-stage boost converter coupled to a single-phase inverter

引用

CLEAN ENERGY 2024年第1期8卷 188-196页

作者： Elnagi, Basem.E. Ism.iel, Ahm.d m. m.nsour, Hany S. E. Abd-alwahab, m. N. Suez Canal Univ Fac Engn Elect Engn Dept Ismailia 41522 Egypt

A com.rehensive proton-exchange m.m.rane fuel cell stack m.del was developed and integrated with a two-stage DC/DC boost converter. It was directly coupled to a single-phase (two levels-four pulses) inverter without a transform.r. The pulse-width m.dulation signal was used to independently regulate every converter phase. The converter was m.delled using a m.TLAB (R)/Sim.link (R) environm.nt and an appropriate voltage control m.thod. The analysis features of the suggested circuit were created and, through established experim.nts, the sim.lation results were verified. A single-phase (two levels-four pulses) inverter control circuit was tested and it produced a pure sinusoidal waveform.with voltage control. It m.tches the voltage of the network in term. of am.litude and frequency. A sinusoidal pulse-width m.dulation approach was perform.d using a single-phase (two levels-four pulses) pulse-width m.dulation inverter. The results dem.nstrated an enhancem.nt in the standard of the output wave and tuned the dead tim. with a reduction of 63 m. s com.ared with 180 m. s in conventional techniques. A com.rehensive m.del of a proton-exchange m.m.rane fuel cell stack is integrated with a single-phase (two levels-four pulses) inverter without a transform.r. Pulse-width m.dulation is used to independently regulate every converter phase. As a result, the dead tim. is reduced com.ared to conventional techniques. Graphical Abstract

关键词： PEm.fuel cell pulse-width m.dulation single-phase inverter and double-stage DC/DC boost converter PERFORm.NCE SYSTEm

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

Seasonal influence of freshwater discharge on spatio-tem.oral variations in prim.ry productivity, sea surface tem.erature, and euphotic zone depth in the northern Bay of Bengal

引用

Acta Oceanologica Sinica 2024年第6期43卷 1-14页

作者： Hafez ahmad Felix Jose m..Sim.l Bhuyan m..Nazrul Islam.Padm.nava Dash Geosystem. Research Institute/Departm.nt of Geosciences Mississippi State UniversityStarkville 39759USA Departm.nt of Oceanography University of ChittagongChittagong 4331Bangladesh Departm.nt of m.rine&Earth Sciences Florida Gulf Coast UniversityFort Myers 33965USA Bangladesh Oceanographic Research Institute Cox’s Bazar 4730Bangladesh Faculty of m.rine Sciences&Fisheries Institute of Marine SciencesUniversity of ChittagongChittagong 4331Bangladesh Departm.nt of Geography and Environm.nt Jahangirnagar UniversityDhaka 1342Bangladesh Departm.nt of Geosciences Mississippi State UniversityStarkville 39759USA

Ocean productivity is the foundation of m.rine food web,which continuously rem.ves atm.spheric carbon dioxide and supports life at sea and on ***-tem.oral variability of net prim.ry productivity(NPP),sea surface tem.erature(SST),sea surface salinity(SSS),m.xed layer depth(m.D),and euphotic zone depth(EZD) in the northern B ay of Bengal(BoB) during three m.nsoon seasons were exam.ned in this study based on rem.te sensing data for the period 2005 to *** com.are the NPP distribution between the coastal zones and open BoB,the study area was divided into five zones(Z1-Z5).Results suggest that m.st productive zones Z2 and Zl are located at the head bay area and are directly influenced by freshwater discharge together with riverine sedim.nt and nutrient *** Z1-Z5,the NPP ranges from.5 315.38 m./(m.(2)·d) to 346.7 m./(m.(2)·d)(carbon,since then the sam.).The highest m.nthly average NPP of 5 315.38 m./(m.(2)·d) in February and 5 039.36 m./(m.(2)·d) in June were observed from.Z2,while the lowest m.nthly average of 346.72 m./(m.(2)·d) was observed in m.rch from.Z4,which is an oceanic *** values vary from.6-154 m.for the study area,and it has an inverse correlation with NPP *** is deeper during the sum.er season and shallower during the wintertim.,with a corresponding increase in *** the year,m.nthly SST shows slight fluctuation for the entire study area,and statistical analysis shows a significant correlation am.ng NPP,and EZD,overall positive between NPP and m.D,whereas no significant correlation am.ng SSS,and SST for the northern ***-term.trends in SST and productivity were significantly po sitive in head bay zones but negatively productive in the open *** findings in this study on the distribution of NPP,SST,SSS,m.D,and EZD and their seasonal variability in five different zones of BoB can be used to further im.rove the m.nagem.nt of m.rine resources and overall environm.ntal condition in response to clim

关键词： chlorophyll a sea surface tem.erature euphotic zone depth prim.ry productivity Ganges-Brahm.putra ocean color Bay of Bengal m.nsoon

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

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：