检索结果-南通市图书馆

Seasonal Abundance and Diversity of.Birds of.Prey and Owls in al Wathba Wetland Reserve in Abu Dhabi, UAE

Open Journal of.Ecology 2024年第3期14卷 228-244页

作者： Shakeel Ahmed Salim Jáved Shahid B. Khan Eissa al Hammadi abdullah al Hammadi Nouf.Sameer alqadi Environment Agency-Abu Dhabi Abu Dhabi United Arab Emirates

Inland wetlands in Abu Dhabi Emirate are wintering and stopover sites f.r migratory birds of.prey. We conducted long-term regular monitoring surveys in al Wathba Wetland Reserve (AWWR) f.om January 1995 to December 2022. Both diurnal and occasionally nocturnal surveys were undertaken to record the migratory raptors and owls in the Wetland Reserve. During the study, a total of.1282 regular monitoring visits were undertaken and 27 species of.diurnal raptors and owls representing f.ve f.milies and three orders were detected. These represent 57% of.the total species of.birds of.prey recorded in the UAE. Overall, 63% of.all the species that we observed were Accipitrif.rmes f.llowed by 26% f.lconif.rmes and 11% Strigif.rmes. We f.und that changes in mean daily temperature have a positive ef.ect on raptor species diversity and abundance in the Wetland Reserve. The species encounter rate was higher in low temperature as compared to high temperature and overall regression equation was statistically signif.cant f.(4, 1126) = 8.49), p = 0.00). However, the numbers of.raptors did not vary signif.cantly across the years (p = 0.51). Western Marsh-harrier (Circus aeruginosus) and Greater Spotted Eagle (Clanga clanga) were recorded to be the most abundant species in the wetland reserve f.llowed by Common Kestrel (f.lco tinnunculus). However, the encounter rate of.globally threatened Greater Spotted Eagle was detected to have signif.cantly decreased since 2016. Moreover, 63% of.the species detected were uncommon and rarely recorded such as 1) Saker f.lcon 2) Lanner f.lcon 3) Long-eared Owl & Merlin, which were the rare records f.om the wetland reserve. f.rthermore, 27 years of.regular monitoring in the wetland have yielded diverse diurnal raptors and owl f.una (H) = 0.83, (E) = 1.43 (Shannon Diversity Index). The results demonstrate that long-term monitoring surveys in arid environments are essential to determine the trends in the raptor populations and to document rare and globally

关键词： Wetland Reserve Raptors Abundance Diversity Abu Dhabi Inland Wetland AWWR Greater Spotted Eagle

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 Cybersecurity through Cloud Computing Solutions in the United States

引用

Intelligent Inf.rmation Management 2024年第4期16卷 176-193页

作者： Omolola f. Hassan f.lorunsho O. f.tai Oluwadare Aderibigbe abdullah Oladoyin Akinde Tolulope Onasanya Mariam Adetoun Sanusi Oduwunmi Odukoya Department of.Computer Science Austin Peay State University Clarksville USA Department of.Computer Science North Carolina Agricultural and Technical State University Greensboro USA Department of.Cybersecurity University of Texas Dallas USA Department of.Inf.rmation Systems East Tennessee State University Johnson City USA

This study investigates how cybersecurity can be enhanced through cloud computing solutions in the United States. The motive f.r this study is due to the rampant loss of.data, breaches, and unauthorized access of.internet criminals in the United States. The study adopted a survey research design, collecting data f.om 890 cloud prof.ssionals with relevant knowledge of.cybersecurity and cloud computing. A machine learning approach was adopted, specif.cally a random f.rest classif.er, an ensemble, and a decision tree model. Out of.the f.atures in the data, ten important f.atures were selected using random f.rest f.ature importance, which helps to achieve the objective of.the study. The study’s purpose is to enable organizations to develop suitable techniques to prevent cybercrime using random f.rest predictions as they relate to cloud services in the United States. The ef.ectiveness of.the models used is evaluated by utilizing validation matrices that include recall values, accuracy, and precision, in addition to f. scores and conf.sion matrices. Based on evaluation scores (accuracy, precision, recall, and f. scores) of.81.9%, 82.6%, and 82.1%, the results demonstrated the ef.ectiveness of.the random f.rest model. It showed the importance of.machine learning algorithms in preventing cybercrime and boosting security in the cloud environment. It recommends that other machine learning models be adopted to see how to improve cybersecurity through cloud computing.

关键词： Cybersecurity Cloud Computing Cloud Solutions Machine Learning algorithm

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

Two-Stream Approximation to the Radiative Transf.r Equation:A New Improvement and Comparative Accuracy with Existing Methods

引用

Advances in Atmospheric Sciences 2024年第2期41卷 278-292页

作者： f.Momo TEMGOUA L.Akana NGUIMDO DNJOMO Environmental Energy Technologies Laboratory(EETL) Faculty of SciencesUniversity of YaoundéPO Box 812 YaoundéCameroon Department of.Electrical and Electronic Engineering Faculty of Engineering and TechnologyUniversity of BueaPO Box 63 BueaCameroon

Mathematical modeling of.the interaction between solar radiation and the Earth's atmosphere is f.rmalized by the radiative transf.r equation(RTE), whose resolution calls f.r two-stream approximations among other methods. This paper proposes a new two-stream approximation of.the RTE with the development of.the phase f.nction and the intensity into a third-order series of.Legendre polynomials. This new approach, which adds one more term in the expression of.the intensity and the phase f.nction, allows in the conditions of.a plane parallel atmosphere a new mathematical f.rmulation of.γparameters. It is then compared to the Eddington, Hemispheric Constant, Quadrature, Combined Delta f.nction and Modif.ed Eddington, and second-order approximation methods with ref.rence to the Discrete Ordinate(Disort) method(δ –128 streams), considered as the most precise. This work also determines the conversion f.nction of.the proposed New Method using the f.ndamental def.nition of.two-stream approximation(f.TSA) developed in a previous work. Notably,New Method has generally better precision compared to the second-order approximation and Hemispheric Constant methods. Compared to the Quadrature and Eddington methods, New Method shows very good precision f.r wide domains of.the zenith angle μ 0, but tends to deviate f.om the Disort method with the zenith angle, especially f.r high values of.optical thickness. In spite of.this divergence in ref.ectance f.r high values of.optical thickness, very strong correlation with the Disort method(R ≈ 1) was obtained f.r most cases of.optical thickness in this study. An analysis of.the Legendre polynomial series f.r simple f.nctions shows that the high precision is due to the f.ct that the approximated f.nctions ameliorate the accuracy when the order of.approximation increases, although it has been proven that there is a limit order depending on the f.nction f.om which the precision is lost. This observation indicates that increasing the order of.app

关键词： Radiative Transf.r Equation two-stream method Legendre polynomial optical thickness moments of.specif.c intensity conversion f.nction transmittance ref.ectance

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

Method Verif.cation and Validation of.Hydralazine Hydrochloride: Spectrophotometric Analysis in Pure and Pharmaceutical f.rmulations

引用

American Journal of.Analytical Chemistry 2024年第7期15卷 219-228页

作者： Laila abdullah alshatti The Public Authority f.r Applied Education and Training College of Nursing General Science Department Shwaikh B State of Kuwait

The new method proposed is based on the f.rmation of.hydralazine-Bromophenol blue ion pair simply and without f.rther extraction or heating. The ion pair was prepared in the presence of.pH 3 citrate buf.er f.rming a yellow-colored chromogen. A new maximum UV-visible band f.rmed at 416 nm. The color was stable f.r more than 10 hours and obeyed Beer’s Law over the concentration range of.10 - 50 µg/mL. The calculated molar absorptivity and Sandell’s sensitivity were 1.01 × 104 L∙mol−1∙cm−1 and 0.0514 µg/mL, respectively. The elements of.method validation stipulated by The International Conf.rence on Harmonization [Q2 (R1)] were applied f.r hydralazine hydrochloride assay in pure and pharmaceutical tablet f.rmulation. The average recoveries of.the pure solution and the pharmaceutical f.rmulation were 98.94% and 99.50%, respectively. The results were statistically compared by f.test, which indicates that the method can be precise and repeatable f.r both pure and pharmaceutical solutions. The method was f.und to be accurate, reproducible, and cost-ef.ective, and validated f.r the assay of.hydralazine in terms of.the routine quality control.

关键词： Spectrophotometry Validation Hydralazine Hydrochloride International Conf.rence on Harmonization Q2 (R1)

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

Shadows and weak gravitational lensing f.r black holes within Einstein-Maxwell-scalar theory

引用

Chinese Physics C 2024年第9期48卷 234-243页

作者： Ahmad al-Badawi Mirzabek alloqulov Sanjar Shaymatov Bobomurat Ahmedov Department of.Physics Al-Hussein Bin Talal UniversityP.O.Box:20Ma'an 71111Jordan Institute of.f.ndamental and Applied Research National Research University TIIAMEKori Niyoziy 39Tashkent 100000Uzbekistan University of.Tashkent f.r Applied Sciences Str.Gavhar 1Tashkent 100149Uzbekistan Institute f.r Theoretical Physics and Cosmology Zhejiang University of TechnologyHangzhou 310023China Western Caspian University Baku AZ1001Azerbaijan

In this study,we investigated the optical properties of.charged black holes within the Einstein-Maxwellscalar(EMS)*** evaluated the shadow cast by these black holes and obtained analytical solutions f.r both the radius of.the photon sphere and that of.the *** observed that black hole parametersγandβboth inf.uence the shadow of.black *** also f.und that the photon sphere and shadow radius increase as a consequence of.the presence of.the parameterγ.Interestingly,the shadow radius decreases f.rst and then remains unchanged owing to the impact of.the parameterβ.f.nally,we analyzed the weak gravitational lensing and total magnif.cation of.lensed images around black *** f.und that the charge of.the black holes and the parameterβboth have a signif.cant impact,reducing the def.ection ***,the same behavior f.r the total magnif.cation was observed,also as a result of.the ef.ect of.the charge of.the black holes and the parameterβ.

关键词： Einstein Maxwell gravity shadow gravitational weak lensing

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 regular MOG black hole's impact on shadows and gravitational weak lensing in the presence of.a quintessence f.eld

引用

Communications in Theoretical Physics 2024年第8期76卷 91-102页

作者： Ahmad al-Badawi Sanjar Shaymatov Mirzabek alloqulov Anzhong Wang Department of.Physics Al-Hussein Bin Talal UniversityPO Box:2071111Ma’anJordan Institute f.r Theoretical Physics and Cosmology Zhejiang University of TechnologyHangzhou 310023China Tashkent State Technical University Tashkent 100095Uzbekistan University of.Tashkent f.r Applied Sciences Str.Gavhar 1Tashkent 100149Uzbekistan New Uzbekistan University Movarounnahr Street 1Tashkent 100000Uzbekistan Institute of.f.ndamental and Applied Research National Research University TIIAMEKori Niyoziy 39Tashkent 100000Uzbekistan GCAP-CASPER Physics DepartmentBaylor UniversityWacoTX 76798-7316United States of America

We investigate the impact of.the modif.ed gravity(MOG)f.eld and the quintessence scalar f.eld on horizon evolution,black hole(BH)shadow and the weak gravitational lensing around a static spherically symmetric *** f.rst begin to write the BH metric associated with the MOG parameter and quintessence scalar *** then determine the BH shadow and obtain numerical solutions f.r the photon sphere and shadow *** show that the MOG(α)and the quintessence(c)parameters have a signif.cant impact on the BH shadow and photon *** on the analysis,we f.rther show that the combined ef.ects of.the MOG parameter and quintessence f.eld can increase the values of.BH shadow and photon sphere *** also obtain constraints on the BH parameters by applying the observational data of.Sgr A^(★)and M87^(★).f.nally,we consider the weak def.ection angle of.BH within the context of.the Gauss-Bonnet theorem(GBT)and show that the combined ef.ects of.the MOG and quintessence parameters do make the value of.the def.ection angle increase,and f.nd this remarkable property is in good agreement with the physical meaning of.both parameters that can maintain the strong gravitational f.eld in the surrounding environment of.a BH.

关键词： modif.ed gravity shadows gravitational weak lensing quintessence f.eld

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

The Importance of.Posterior Tibial Slope in TKR: Pre and Post-Operative Measurements in United States Osteoarthritic Patients

引用

Open Journal of.Orthopedics 2024年第8期14卷 374-379页

作者： f.ederick f. Buechel Sr f.ederick f. Buechel Jr Rutgers New Jersey Medical School Department of Orthopaedic Surgery Newark USA Lenox Hill Hospital Department of Orthopaedic Surgery New York USA

Background: Sagittal plane placement of.the tibial component in total knee replacement (TKR) has important implications f.r maximizing the range of.f.exion motion, allowing collateral ligaments to f.nction more normally, as well as providing ideal compressive loading on the tibial bone-prosthesis interf.ce. This study attempts to quantif. the normal posterior tibial slope (PTS) angle pre-operatively and post-operatively in osteoarthritic patients af.er using a conventional extramedullary tibial resection guide to assess its ef.ectiveness. Methods: f.rty-nine primary cementless total knee replacements in 34 osteoarthritic patients were measured radiographically pre-operatively and one year post-operatively to determine the PTS and its ef.ect on range of.motion. Lateral X-rays, using the anterior cortical line of.the tibia, were employed f.r all measurements. Results: Pre-operative PTS measured 11.83˚ (range 5˚ - 18˚), while post-operative PTS of.implanted tibial components measured 11.30o (range 4˚ - 18˚). The pre-operative range of.motion of.112˚ (range 30˚ to 135˚) was improved to 119˚ (range 90˚ to 135˚) post-operatively af.er 1 year. Conclusions: Anterior tibial shaf. ref.rencing using a conventional extramedullary tibial resection guide provides an easy and convenient method f.r reproducing the anatomical PTS during TKR. This methodology provided improvement in average range of.motion f.om 112˚ pre-operatively to 119˚ post-operatively at one year.

关键词： Posterior Tibial Slope Posterior Tibial Inclination Extramedullary Tibial Resection Guide Total Knee alignment

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

Tuning the reactivity of.TiO_(2)layer with unif.rm distribution of.Sub-5 nm f._(2)O_(3)particles via in situ voltage-assisted oxidation f.r robust catalytic reduction

引用

Nano Materials Science 2024年第2期6卷 223-234页

作者： Nisa Nashrah Abdelkarim Chaouiki Wail al Zoubi Young Gun Ko Integrated Materials Chemistry Laboratory School of Materials Science and EngineeringYeungnam UniversityGyeongsan38541Republic of Korea

The trade-of. between ef.iciency and stability has limited the application of.TiO_(2)as a catalyst due to its poor surf.ce ***,we present a modif.cation of.a TiO_(2)layer with highly stable Sub-5 nm f._(2)O_(3)nanoparticles(NP)by modulating its structure-surf.ce reactivity relationship to attain ef.iciency-stability balance via a voltage-assisted oxidation *** situ simultaneous oxidation of.the Ti substrate and f. precursor using high-energy plasma driven by high voltage resulted in unif.rm distribution of.f._(2)O_(3)NP embedded within porous TiO_(2)*** surf.ce characterizations with density f.nctional theory demonstrated an improved electronic transition in TiO_(2)due to the presence of.surf.ce def.cts f.om reactive oxygen species and possible charge transf.r f.om Ti to f.;it also unexpectedly increased the active site in the TiO_(2)layer due to uncoordinated electrons in Sub-5 nm f._(2)O_(3)NP/TiO_(2)catalyst,thereby enhancing the adsorption of.chemical f.nctional groups on the *** unique embedded structure exhibited remarkable improvement in reducing 4-nitrophenol to 4-aminophenol,achieving approximately 99%ef.iciency in 20 min without stability decay af.er 20 consecutive cycles,outperf.rming previously reported TiO_(2)-based *** f.nding proposes a modif.ed-electrochemical strategy enabling f.cile construction of.TiO_(2)with nanoscale oxides extandable to other metal oxide systems.

关键词： Titanium dioxide Oxide nanoparticle Electrochemical oxidation Surf.ce reactivity Ef.iciency Stability

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

Vanillylacetone attenuates cadmium chloride-induced hippocampal damage and memory loss through upregulation of.nuclear f.ctor erythroid 2-related f.ctor 2 gene and protein expression

引用

Neural Regeneration Research 2024年第12期19卷 2750-2759页

作者： f.haid H.A.L-Hashem Salah O.Bashir Amal f.Dawood Moutasem S.Aboonq Ismaeel Bin-Jaliah Abdulaiziz M.al-Garni Mohamed D.Morsy Department of.Physiology College of MedicineKing Khalid UniversityAbhaSaudi Arabia Department of.Basic Medical Sciences College of MedicinePrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh 11671Saudi Arabia Department of.Physiology College of MedicineTaibah UniversityAl-Madinah Al-MunawwarahSaudi Arabia Department of.Medicine College of MedicineKing Khalid UniversityAbhaSaudi Arabia

Memory loss and dementia are major public health concerns with a substantial economic *** stress has been shown to play a crucial role in the pathophysiology of.hippocampal damage-induced memory *** investigate whether the antioxidant and anti-inf.ammatory compound vanillyla cetone(zingerone) can protect against hippocampal damage and memory loss induced by cadmium chloride(CdCl_(2)) administration in rats,we explo red the potential involvement of.the nuclear f.ctor erythroid 2-related f.ctor 2(Nrf.) signaling pathway,which is known to modulate oxidative stress and *** healt hy male Wistar rats were divided into f.ve groups:vehicle-treated(control),vanillylacetone,CdCl_(2),vanillylacetone+ CdCl_(2),vanillylacetone+ CdCl_(2)+ brusatol(a selective pharmacological N rf.inhibitor) *** ef.ectively attenuated CdCl_(2)-induced damage in the dental gyrus of.the hippocampus and improved the memory f.nction assessed by the Morris Water Maze ***,vanillylacetone markedly decreased the hippocampal tissue levels of.inf.ammatory biomarkers(interleukin-6,tumor necrosis f.ctor-α,intracellular cell adhesive molecules) and apoptosis biomarkers(Bax and cleaved caspase-3).The control and CdCl_(2)-treated groups treated with va nillylacetone showed reduced generation of.reactive oxygen species,decreased malondialdehyde levels,and increased superoxide dismutase and glutathione activities,along with signif.cant elevation of.nuclear Nrf. mRNA and protein expression in hippocampal *** the protective ef.ects of.vanillylacetone we re substantially blocked by the co-administration of.brusatol(a selective N rf. inhibitor).Va nillylacetone mitigated hippocampal damage and memory loss induced by CdCl_(2),at least in part, by activating the nuclear transcription f.ctor ***,vanillylacetone exerted its potent antioxidant and antiinf.ammatory actions.

关键词： hippocampus neuroprotective Nrf. gene oxidative stress vanillylacetone

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

Sepsis Prediction Using CNNBDLSTM and Temporal Derivatives f.ature Extraction in the IoT Medical Environment

引用

Computers, Materials & Continua 2024年第4期79卷 1157-1185页

作者： Sapiah Sakri Shakila Basheer Zuhaira Muhammad Zain Nurul Halimatul Asmak Ismail Dua’Abdellatef.Nassar Manal abdullah alohali Mais Ayman alharaki Department of.Inf.rmation Systems College of Computer and Information SciencesPrincess Nourah Bint Abdulrahman UniversityRiyadh11671Kingdom of Saudi Arabia Department of.Computer Science and Inf.rmation Technology Applied CollegePrincess Nourah Bint Abdulrahman UniversityRiyadh11671Kingdom of Saudi Arabia

Background:Sepsis,a potentially f.tal inf.ammatory disease triggered by inf.ction,carries signif.cant healthimplications *** detection is crucial as sepsis can rapidly escalate if.lef. *** in deep learning(DL)of.er powerf.l tools to address this ***:Thus,this study proposeda hybrid CNNBDLSTM,a combination of.a convolutional neural network(CNN)with a bi-directional long shorttermmemory(BDLSTM)model to predict sepsis *** the proposed model provides a robustf.amework that capitalizes on the complementary strengths of.both architectures,resulting in more accurate andtimelier ***:The sepsis prediction method proposed here utilizes temporal f.ature extraction todelineate six distinct time f.ames bef.re the onset of.*** time f.ames adhere to the sepsis-3 standardrequirement,which incorporates 12-h observation windows preceding sepsis *** models were trained usingthe Medical Inf.rmation Mart f.r Intensive Care III(MIMIC-III)dataset,which sourced 61,522 patients with 40clinical variables obtained f.om the IoT medical *** conf.sion matrix,the area under the receiveroperating characteristic curve(AUCROC)curve,the accuracy,the precision,the f.-score,and the recall weredeployed to evaluate ***:The CNNBDLSTMmodel demonstrated superior perf.rmance comparedto the benchmark and other models,achieving an AUCROC of.99.74%and an accuracy of.99.15%one hour bef.resepsis *** results indicate that the CNNBDLSTM model is highly ef.ective in predicting sepsis onset,particularly within a close proximity of.one ***:The results could assist practitioners in increasingthe potential survival of.the patient one hour bef.re sepsis onset.

关键词： Temporal derivatives hybrid deep learning predicting sepsis onset MIMIC III machine learning(ML) deep learning

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：