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Impact of Rainfall Temporal Heterogeneity on Relationship between Curve Number and Rainfall Depth in the Zagros Mountain Region,Iran

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Journal of Mountain Science 2015年第3期12卷 689-698页

作者： hassan REZAEI-SADR Water Resources Department Nahrab Parseh Consulting Engineers Company

The impact of temporal variation of rainfall on the relationship between rainfall and catchment response is investigated in a catchment with high temporally variable rainfalls and a high percentage of permeable soils in the southwest of ***-nine storm events are classified into two classes, High Temporal heterogeneous(HT) and Low Temporal heterogeneous(LT) events using the variogram technique and the storm events of each class are analyzed to detect the relationship between Curve Number(CN) and rainfall depth. It is found that there is not a similar correlation between CN values and rainfall depths for both temporally variable classes, and hence, two different responses can be observed in the catchment according to rainfall temporal heterogeneities. For HT events, a complacent behavior is detected in which the CNs decline as rainfall depth increases while a different response, violent behavior, is observed for LT events in which the CNs rise and asymptotically approach a constant value with increasing storm size. This considerable difference between CN-P relationships derived from the two temporally variable classes of rainfall is attributed to the provocation of different runoff generation mechanisms, infiltration-excess and saturation-excess caused by rainfall temporal heterogeneities. Moreover, the results support the validity of variogram technique to classify storm events into two LT and HT classes.

关键词： Asymptotic approach Curve Numbermethod Infiltration-excess Rainfall temporalvariation Saturation-excess Variogram technique

Left-Symmetric Superalgebra Structures on an Infinite-Dimensional Lie Superalgebra

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Algebra Colloquium 2023年第3期30卷 429-438页

作者： Hongjia Chen Omer hassan School of Mathematical Sciences University of Science and Technology of China Hefei 230026China

In this note, the compatible left-symmetric superalgebra structures on an infinite-dimensional Lie superalgebra with some natural grading conditions are completely determined. The results of earlier work on left-symme... 详细信息

关键词： left-symmetric superalgebra Virasoro algebra Lie superalgebra

Scour around submarine pipes due to high-amplitude transient waves

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Water Science and Engineering 2020年第2期13卷 154-161页

作者： hassan Vosoughi Hooman Hajikandi Department of Civil Engineering Central Tehran BranchIslamic Azad UniversityTehran ***Iran

Estimation of scour dimensions below submarine pipelines is a vital step in designing offshore *** events like tsunami waves produce strong erosive forces below the underwater pipes,apt to create scour holes,jeopardizing the safety of the *** the importance of this issue,previous studies have mainly focused on steady flow cases,and the scour pattern below submarine pipes induced by high-amplitude transient waves has rarely been *** paper reports the results of 40 experimental runs on transient wave-induced scour below a model pipe in a laboratory flume under a variety of initial *** variables included the bed particle size and gradation,initial water depth,wave height,and slope of the bed *** were generated by a sudden release of water from a sluice gate,installed in the middle of the flume.A pressure transducer data acquisition system was used to record the wave heights at different time *** results indicate that,with a shallower initial depth of flow,the scour depth is relatively *** was also found that there exists a direct correlation between the induced wave height and the size of the scour *** was observed that,in clear water conditions,the size of the scour hole in coarse sediments is smaller,while in live-bed conditions,larger scour holes are created in coarser *** was also observed that at high wave amplitudes,the live-bed conditions are dominant,and consequently the bed elevation is altered.

关键词： Submarine pipe Scour hole Transient wave Flume experiment Live-bed condition Sediment

New aspects about Supella longipalpa(Blattaria:Blattellidae)

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Asian Pacific Journal of Tropical Biomedicine 2016年第12期6卷 1065-1075页

作者： hassan Nasirian Department of Medical Entomology and Vector Control School of Public HealthTehran University of Medical Sciences

The brown-banded cockroach,Supella longipalpa(Blattaria:Blattellidae)(***),recently has infested the buildings and hospitals in wide areas of Iran,and this review was prepared to identify current knowledge and knowledge gaps about the brown-banded *** reports and peer-reviewed papers concerning *** and relevant topics were collected and synthesized with the objective of learning more about health-related impacts and possible management of *** in *** the German cockroach,the brown-banded cockroach is a known vector for food-borne diseases and drug resistant bacteria,contaminated by infectious disease agents,involved in human intestinal parasites and is the intermediate host of Tnchospirura leptostoma and Moniliformis *** its habitat is widespread,distributed throughout different areas of homes and buildings,it is difficult to *** its possible resistance to insecticides,the control situation may be far more *** improved control of *** an integrated pest management program is ***,indoor insecticide spraying in the initial cockroach control phase and insecticide formulation baits are recommended simultaneously.

关键词： Brown-banded cockroach Blattellidae Blattaria Integrated pest management New aspects Supella longipalpa

Quantum Distribution Functions for Dusty Plasma in Saturn’s Rings by Using Curvilinear Coordinates

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International Journal of Astronomy and Astrophysics 2019年第2期9卷 115-132页

作者： Nagat Abd El Rahman Hussein Abd El-Rahim hassan Ahmed esraa Gamal Sayed Mathematics Department Faculty of Science Assiut University Assiut Egypt Mathematics Department Faculty of Science Al-Azhar University Assiut Egypt

This study aims to estimate the quantum Bogoliubov-Born-Green-Kirkwood-Yvon (BBGKY) hierarchy in curvilinear coordinates. We used the results to calculate the quantum binary and triplet distribution functions in curvilinear coordinates. The analytical form of the quantum distribution functions was obtained for dusty plasma in Saturn’s rings model. We use particles-in-cell (PIC) simulations to find a visualization of dusty three-component plasma phase space in curvilinear coordinates. Our results were compared with others.

关键词： Dusty Plasma Binary and Triplet Distribution Functions Three Component Plasma BBGKY Hierarchy

A Triple-Channel Encrypted Hybrid Fusion Technique to Improve Security of Medical Images

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Computers, Materials & Continua 2021年第7期68卷 431-446页

作者： Ahmed S.Salama Mohamed Amr Mokhtar Mazhar B.Tayel esraa Eldesouky Ahmed Ali Future University in Egypt CairoEgypt Cairo Higher Institute for Engineering Computer Science and ManagementCairoEgypt Department of Electrical Engineering Faculty of EngineeringAlexandria UniversityAlexandria21544Egypt Department of Computer Science Faculty of Computers and InformaticsSuez Canal UniversityIsmailia CityEgypt Higher Future Institute for Specialized Technological Studies CairoEgypt Department of Computer Science College of Computer Engineering and SciencesPrince Sattam Bin Abdulaziz UniversityAl-Kharj11942Saudi Arabia

Assuring medical images protection and robustness is a compulsory necessity *** this paper,a novel technique is proposed that fuses the wavelet-induced multi-resolution decomposition of the Discrete Wavelet Transform(DWT)with the energy compaction of the Discrete Wavelet Transform(DCT).The multi-level Encryption-based Hybrid Fusion Technique(EbhFT)aims to achieve great advances in terms of imperceptibility and security of medical images.A DWT disintegrated sub-band of a cover image is reformed simultaneously using the DCT ***,a 64-bit hex key is employed to encrypt the host image as well as participate in the second key creation process to encode the ***,a PN-sequence key is formed along with a supplementary key in the third layer of the ***,the watermarked image is generated by enclosing both keys into DWT and DCT *** fusions ability of the proposed EbHFT technique makes the best use of the distinct privileges of using both DWT and DCT *** order to validate the proposed technique,a standard dataset of medical images is *** results show higher performance of the visual quality(i.e.,57.65)for the watermarked forms of all types of medical *** addition,EbHFT robustness outperforms an existing scheme tested for the same dataset in terms of Normalized Correlation(NC).Finally,extra protection for digital images from against illegal replicating and unapproved tampering using the proposed technique.

关键词： Medical image processing digital image watermarking discrete wavelet transforms discrete cosine transform encryption image fusion hybrid fusion technique

Study on genetic coadaptability of wild quail populations in China

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Science China(Life Sciences) 2006年第2期49卷 172-181页

作者： hassan Hussein Animal Science & Technology College Yangzhou University

Genetic coadaptability of wild Japanese quail, wild Common quail and Domestic quail populations in China was studied using 7 microsatellite DNA markers and Monte Carlo method to test genetic disequilibrium. The molecular effects of genetic coadaptability were analyzed through a new statistical model of neutral site. The results showed that genetic coadaptability dominated the genetic disequilibrium of the three quail populations, and totally 16.67%, 9.66% and 10.05% of non-allelic combinations were in the genetic disequilibrium in wild Japanese quail, wild Common quail and Do-mestic quail populations, respectively. Genetic coadaptability existed at almost all the tested sites. In the molecular point of view, genetic coadaptability plays an important role of keeping lots of poly-morphisms in natural populations. Therefore, it is another key factor to the genetic disequilibrium in the population except for linkage. The results enrich the conceptions and connotations of genetic disequilibrium, and help us know more about genetic coadaptability and its effects, and lay a founda-tion of evaluation and protection of wild quail genetic resources in China.

关键词： microsatellite, wild quail, genetic coadaptability, linkage, genetic disequilibrium.

Flow behavior and deposition study of pollen-shape carrier particles in an idealized inhalation path model

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Particuology 2010年第1期8卷 51-59页

作者： Meer Saiful hassan Raymond Lau School of Chemical and Biomedical Engineering (SCBE) Nanyang Technological University (NTU)

Pollen-shape （spiked sphere） hydroxyapatite （HA） particles for drug carrier application are studied. The particle shape and size effect on flow characteristics and deposition are assessed. The pollen-shape HA particles are synthesized to have comparable size as typical carrier particles with mean diameter of 30-50 μm and effective density less than 0.3 g/cm^3. The flow behaviors of HA and commonly used lactose （LA） carrier particles are characterized by the Carr＇s compressibility index （CI）. The HA particles have lower CI than the LA particles for the same size range. The flow fields of HA and LA carrier particles are measured in an idealized inhalation path model using particle image velocimetry （PLY） technique. The particle streamlines indicate that a large portion of particles may deposit at the bending section due to inertial impaction and gravitational deposition. The flow field result shows that HA particles give smaller separation regions than the LA particles for the same size range. The pollen-shape HA particles are found to be able to follow the gas flow in the model and minimize undesired deposition. Deposition result confirms the bending section to have the most deposition. Deposition is found to be a function of particle properties. An empirical correlation is derived for the deposition efficiency of the pollen-shape particles as a function of particles Stokes number.

关键词： Aerosol Fluid mechanics Multiphase flow Particle Powder technology Pulmonary drug delivery

Elastic Mechanical Stress Analysis in a 2D-FGM Thick Finite Length Hollow Cylinder with Newly Developed Material Model

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Acta Mechanica Solida Sinica 2016年第2期29卷 178-191页

作者： Amir Najibi Mohammad hassan Shojaeefard Faculty of Mechanical Engineering Semnan University School of Mechanical Engineering Iran University of Science & Technology

In this paper a new 2D-FGM material model based on Mori-Tanaka scheme and third-order transition function has been developed for a thick hollow cylinder of finite *** mechanical stress analysis is performed by utilizing the finite element *** corresponding material,displacement and stress distributions are evaluated for different values of nr and ***,the effects of different material property distributions on the effective stress with respect to the metallic phase volume fraction are *** is demonstrated that the increase in nr and V_m leads to a significant reduction in the effective ***,it is shown that the ceramic phase rich cylinder wall has lower maximum effective stresses of which the lowest value of effective stress has been evaluated for nr=20 and nz=*** minimum value is about half the maximum effective stress which has been evaluated for the non-FGM cylinder case（nr=nz=0.1）.

关键词： 2D-FGM elastic analysis thick hollow cylinder Mori-Tanaka material model