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Sediment transport mechanisms and selective removal of soil particles under unsteady-state conditions in a sheet erosion system

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International Journal of Sediment Research 2022年第2期37卷 151-161页

作者： elham Sirjani Majid Mahmoodabadi Artemi Cerdà Department of Soil Science Faculty of Agriculture Shahid Bahonar University of Kerman Departament de Geografia Universitat de València

Selective removal of particles and nutrients by water erosion is a key factor in soil erosion *** agricultural soils are located on gentle slopes where fertility is high;however,until now,the main attention on sediment transport mechanisms was paid to high-slope gradients,where soil erosion is intense,but soils are less *** the importance of sediment size distribution(SSD) and transport mechanisms under unsteady-state conditions,few studies have been done on this *** sediment concentrations in the early stages of the runoff indicate the need to deal with unsteady-state *** address this issue,sheet erosion experiments were done using a 0.2 m by 1 m tilting flume under controlled laboratory *** inflow rates(75,100,125,150,175,and 200 mL/s) were applied on two contrasting soils,including an adjacent agricultural soil and a not cultivated soil(namely Cropland soil and Control soil,respectively) at two low slope gradients(1.5% and 2%).No rill formation was observed during the *** sediment-laden runoff was sampled during unsteady-state flow to determine the SSDs and sediment transport mechanisms of eroded particles for unsteadystate *** results indicated different trends in the selective removal of sediment particles depending on hydraulic conditions and soil aggregate *** contribution of suspension-saltation(SS)to the total sediment load for the Cropland and Control soils varied from 22% to 68% and from 35% to 59%,respectively,while up to 78% and 65% of soil particles were transported by bed load(BL),***,SS and BL indicated a reverse trend with stream *** Cropland soil showed a single peak in the SSD at low stream powers because of the selective removal of fine particles(0.042 mm),whereas the SSD was shifted to a bimodal distribution at higher stream powers with the selective depletion of both fine(≤0.084 mm) and coarse(1.5 mm) *** Control soil experienced a

关键词： Aggregate breakdown Bed load Stream power Suspension-saltation Tilting flume

An application of intuitionistic fuzzy sets in medicine

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International Journal of Biomathematics 2016年第3期9卷 81-95页

作者： Bijan Davvaz elham Hassani Sadrabadi Department of MathematicsYazd University Yazd Iran

Intuitionistic fuzzy sets have many applications in different sciences. In this paper we verify one of the applications of intuitionistic fuzzy sets in medical diagnosis according to the ideas of Shannon et al., Wang and Xin, Grzregorzewski, Hung and Yang, and Yang and Chiclana. Actually by using the relationships between intuitionistic fuzzy sets and symptoms of patient we determine the kind of illness and finally we compare the methods.

关键词： Fuzzy set intuitionistic fuzzy set intuitionistic fuzzy relation intuitionisticmedical diagnosis.

A mathematical model for open pit mine production scheduling with Grade Engineering and stockpiling

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International Journal of Mining Science and Technology 2021年第4期31卷 717-728页

作者： Karo Fathollahzadeh elham Mardaneh Mehmet Cigla Mohammad Waqar ali Asad Western Australian School of Mines:Minerals Energy and Chemical EngineeringCurtin UniversityKalgoorlie 6430Australia School of Electrical Engineering Computing and Mathematical SciencesCurtin UniversityPerth 6845Australia

This paper presents the development and implementation of an innovative mixed integer programming based mathematical model for an open pit mining operation with Grade Engineering *** Engineering comprises a range of coarse-separation based pre-processing techniques that separate the desirable(***-grade)and undesirable(***-grade or uneconomic)materials and ensure the delivery of only selected quantity of high quality(or high-grade)material to energy,water,and cost-intensive processing *** model maximizes the net present value under a range of operational and processing *** that the proposed model is computationally complex,the authors employ a data preprocessing procedure and then evaluate the performance of the model at several practical instances using computation time,optimality gap,and the net present value as valid *** addition,a comparison of the proposed and traditional(without Grade Engineering)models reflects that the proposed model outperforms the traditional formulation.

关键词： Mine planning Grade Engineering Optimization Scheduling Stockpiling Exact methods

Reduction of local scour around bridge pier groups using collars

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International Journal of Sediment Research 2010年第4期25卷 411-422页

作者： Manouchehr HEIDARPOUR Hossein AFZalIMEHR elham IZADINIA Department of Water Engineering Isfahan University of Technology Isfahan Iran Graduate Student of Water Engineering Isfahan University of Technology Isfahan Iran Department of Water Engineering Isfahan University of Technology Isfahan Iran

In this paper reduction of scour around group of two and three piers using circular collar has been carried out for the case of clear-water flow over uniform sediment. The efficiency of collars, with different sizes and spaces between piers is studied through experiments in group of two and three piers. The result reveals that collar has more influence in reduction of scour depth in rear piers than the first pier. also, when the spacing between the piers increases the area without protection between the piers is washed away resulting deeper scour holes at the rear piers.

关键词： Scour Bridges Group piers Collar

Physiological traits and anatomic structures of the seed for two short cotton season genotypes(Gossypium hirsutum L.) under water stress

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Journal of Integrative Agriculture 2020年第1期19卷 89-98页

作者： Maryam KOLAHI elham FAGHANI Andrea GOLDSON-BARNABY Borhan SOHRABI Faculty of Science Shahid Chamran University of AhvazAhvaz ***Iran Agronomy Department Cotton Research InstituteAgricultural ResearchEducation and Extension Organization(AREEO)Gorgan ***Iran Department of Chemistry the University of the West IndiesMona 37816Jamaica Agricultural Engineering Department AREEOGorgan ***Iran

Cotton(Gossypium hirsutum L.) is utilized commercially in the production of textile, clothing, and household goods. Its growth is affected by various environmental conditions such as soil, climate, and water supply. Irrigation is one of the most important factors for crop management. This research was designed with the aim of studying the biochemical and anatomical features of two genotypes of cottonseed(Latif and Golestan) in order to determine optimum irrigation. Protein, starch, gossypol gland, total soluble protein, starch content, and the anatomical structure of the cotton seeds were investigated. The data were analyzed using the SAS Software. The results showed that when rainfed, Golestan genotype seeds had a larger number of secretory cavities, soluble protein, and starch compared to Latif seeds. There was also a noticeable difference in the size of the seeds. Cellulosic cell walls and protein particles were also observed in the seed structure under induced water stress conditions. It can therefore be concluded that in response to water shortage, there was a noticeable change in the morphometric, anatomic, and biochemical features of the cottonseeds. It can be concluded that when rainfed, the Golestan genotype of cottonseed has more compatibility than the Latif genotype. In general, the application of different levels of irrigation showed that at moderate levels of irrigation, anatomical features appeared more normal. The observations indicate that at high levels of irrigation, some cells begin to dehisce due to osmotic stress, which results in a lack of accurate formation of tissue structures. The Golestan genotype is therefore the best suited for dryland farming.

关键词： anatomic structure cotton seed metabolites water stress

A Review on Selenium Function under Oxidative Stress in Plants Focusing on ROS Production and

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Phyton-International Journal of Experimental Botany 2023年第7期92卷 1921-1941页

作者： Armin Saed-Moucheshi elham Rezaei Mirghaed Horticulture and Crop Research Department Kermanshah Agricultural and Natural Resources Research and Education Center(AREEO)KermanshahIran Department of Agricultural Biotechnology Faculty of AgricultureLorestan UniversityKhorramabadIran

One of the main reasons of the annual reduction in plant production all around the world is the occurrence of abiotic stresses as a result of an unpredicted changes in environmental *** stresses basically trigger numerous pathways related to oxygen free radicals’generation resulting in a higher rate of reactive oxygen species(ROS)***,higher rate of oxygen free radicals than its steady state causes to oxidize various types of molecules and compartments within the plants’cells and *** stress is the result of high amount free radicals of oxygen interfering with different functions leading to undergo signiﬁcant changes from molecular to phenotypic *** response to oxidative stress,plants deploy different enzymatic and non-enzy-matic antioxidant mechanisms to detoxify extra free radicals and get back to a normal *** some spe-ciﬁc treatments have shown to signiﬁcantly affect the antioxidant capacity and efﬁciency of the stressed cells and *** of such reportedly effective treatments is the utilization of selenium(Se)element in stressed *** the past years some different experiments evaluated the probable effect or efﬁciency of Se regarding its impact on plant under oxidative ***,based on the recent studies,Se has a signiﬁcant role in plant responses to abiotic stresses probably due to its ability to improve the plants’tolerance to oxidative *** signiﬁcant inﬂuences of Se,and its related components such as nano-selenium,in plants under oxidative stress rooting from abiotic stresses,along with the newﬁnding pertaining to its metabolism and translocation mechanisms inside the plant cells under oxidative stress condition are clearly explained in this ***,there are still lack of a comprehensive explanation related to the precise mechanism of Se in plants under oxida-tive stress.

关键词： Reactive oxygen species abiotic stress reactive oxygen species stress tolerance antioxidant defense system

Incidence and risk factors for infantile colic in Iranian infants

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World Journal of Gastroenterology 2008年第29期14卷 4662-4666页

作者： elham Talachian ali Bidari Mohammad Hossein Rezaie Division of Pediatric Gastroenterology Ali-Asghar Children's HospitalTehran *** Iran Medical School Iran University of Medical SciencesTehran 158756177 Iran

AIM: To assess the incidence of infantile colic and its association with variable predictors in infants born in a community maternity hospital, Tehran, Iran. METHODS: In this prospective cohort study, mothers who gave birth to live newborns between February 21 and March 20, 2003 at the hospital were invited to join to the study. For every infant-mother dyad data were collected on infant gender, type of delivery, gestational age at birth, birth weight, birth order, and mother's reproductive history. Then mothers were given a diary to document the duration of crying/fussiness behav-iors of their infants for the next 12 wk. We scheduled home visits at the time the infants were 3 mo of age to collect the completed diaries and obtain additional information on infants' nutritional sources and identify if medications were used for colic relief. Cases of colic were identifi ed by applying Wessel criteria to recorded data. Chi-square and Mann-whitney U tests were used to compare proportions for non-parametric and para-metric variables, respectively. RESULTS: From 413 infants, follow-up was completed for 321 infants. In total, 65 infants (20.24%) satisfi ed the Wessel criteria for infantile colic. No statistical sig-nifi cance was found between colicky and non-colicky infants according to gender, gestational age at birth, birth weight, type of delivery, and, infant's feeding pattern. However, fi rstborn infants had higher rate for developing colic (P = 0.03). CONCLUSION: Colic incidence was 20% in this popu-lation of Iranian infants. Except for birth order status, no other variable was signifi cantly associated with in-fantile colic.

关键词： Infantile colic Incidence Iran, Risk factors

Personalized microblog recommendations based on trustpropagation and implicit microblog similarity

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Frontiers of Computer Science 2021年第4期15卷 215-216页

作者： elham MAZINAN Hassan NADERI Mitra MIRZAREZAEE Saber SAATI Department of Computer Engineering Science and Research BranchIslamic Azad UniversityTehran ***Iran Department of Computer Engineering Iran University of Science and TechnologyTehran ***Iran Department of Mathematics Tehran North branchIslamic Azad UniversityTehran ***Iran

1 Introduction and main contributions Everyone knows about the effectiveness of microblog social recommender systems,such as Twitter,in sharing information[1–3]One of the challenges posed by social recommender systems is the offering of relevant recommendations to the target user in spite of the heterogeneity of the links in the social ***,the mere consideration of links cannot offer proper recommendations to the target user.

关键词： similarity offering spite

Effects of physical form of diet on nutrient digestibility, rumen fermentation, rumination,growth performance and protozoa population of finishing lambs

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Animal Nutrition 2017年第2期3卷 139-144页

作者： elham Karimizadeh Morteza Chaji Tahereh Mohammadabadi Department of Animal Science Ramin Agriculture and Natural Resources University of Khuzestan

This study was conducted to compare effects of 3 physical forms of feed including mash(diet 1), pellet(diet 2) and complete feed block(CFB; diet 3) on digestion, fermentation and performance of ***-one lambs with an initial average body weight of 26 ± 2.5 kg and 6 ± 1.5 months of age were assigned through a completely randomized design to 3 treatments and 7 replicates. The experimental treatments had the same formulation. The results of present experiment showed that CFB significantly increased feed intake and nutrient digestibility(P 0.05), except acetic acid(P al detergent fiber(NDF), acid detergent fiber(ADF) intake, and total body weight gain of lambs in CFB diet were the highest among all diets(P al period were better in CFB than in other diets(P all, according to the findings of the present study, among 3 physical forms of the diets, CFB had the best efficiency due to improvement of nutrient digestibility, rumen fermentation and performance of lambs. Therefore, the CFB diet offers the best result in lambs compared with mash and pellet diets.

关键词： Complete feed blocks Digestibility Mash Pellet Performance Protozoa