scholarly journals Fuzzy and Classical MCDM Techniques to Rank the Slope Stabilization Methods in a Rock-Fill Reservoir Dam

2017 ◽  
Vol 3 (6) ◽  
pp. 382-394 ◽  
Author(s):  
Sina Shafiee Haghshenas ◽  
Reza Mikaeil ◽  
Sami Shaffiee Haghshenas ◽  
Masoud Zare Naghadehi ◽  
Pedram Sirati Moghadam

Slope stabilization is one of the most crucial tasks in rock-fill reservoir dam projects to prevention of erosion and destruction of upstream and downstream slopes. Inappropriate choice and design of the protection can cause irreparable damages imposing additional costs and time to the project. In this paper, the body slope ranking is conducted by using the classical and fuzzy multi-criteria decision making approaches specifically VIKOR and Fuzzy-TOPSIS methods. To this aim, eight important and effective criteria were considered to select the most appropriate cover among five most common ones for protecting and conserving body slope of the rock-fill dams. The study was conducted on a dam in Bijar city located in the province of Guilan, the north of Iran. According to results of a comparative analysis using fuzzy and classical MCDM techniques, the concrete facing cover and the soil-cement cover have placed at the highest and lowest ranks to protect the body of the dam, respectively, suggested by both employed methods.

Author(s):  
Hamed Ahmadi Moghadam ◽  
Sahar Ahmadi ◽  
Mir Ahmad Neshaei

In this study details of structure of Shahr-e-Bijar concrete-faced rock-fill (CFRD) in Guilan (a province in the north of Iran) and the reasons to select CFRD are presented. To select CFRD first by investigation of 18 different types of dam based on local availability of materials and the ability of constructing by available technology (both Iranian and foreign available technology) six types of them were selected for value engineering. By attention to construction costs, execution time, durability, reliability and performance and ease of construction and operation; and also, the importance coefficient for local government were selected for value engineering. After that 3 types of dam structure (vertical clay core dam, asphalt core dam, and CFRD) had maximum scores. Finally, rock fill dam with concrete surface is selected because despite being more expensive in some cases than other options, it could be considered as a successful dam construction option in Iran because the construction needs no foreign technology and its technology of construction and materials are available. On the other hand, the necessary time for the project is 24 months. The main objective of this project is to avoid time loosing because of materials availability and local technology that needs no finance transferring and no foreign contract that may not be affected by some political condition that delays the project.


2019 ◽  
Vol 19 (3) ◽  
pp. 274-278 ◽  
Author(s):  
Saba Fakhrieh Asl ◽  
Mehrnaz Pourvahedi ◽  
Ali Mojtahedi ◽  
Mohammad Shenagari

Objective:Helicobacter pylori is a Gram-negative bacterium which has a serious effect on up to half of the world’s population and has been related to different gastric diseases. The goal of this study was to assess the frequency of babA, cagE and cagA genotypes among H. pylori strains isolated from gastric biopsies of endoscopic patients in the north of Iran.Methods:The present study was performed on 90 strains of H. pylori isolated from patients with gastric diseases (Gastric ulcer (GU), Duodenal ulcer (DU), Gastritis (G), Non-ulcer dyspepsia (NUD) and Gastric adenocarcinoma (GC)). DNA was extracted from all isolated strains and PCR method was performed to detect the prevalence of babA2, cagE and cagA genes using specific primers.Results:Among 90 samples of H. pylori, babA2, cagE, and cagA genes were detected in 42.2%, 30% and 82.2% of strains respectively. The statistical analysis showed that the prevalence of cagA gene in GU, G, DU, and NUD was significantly higher than other genes. Moreover, cagA, and babA2 genes were significantly more prevalent in GC patients compared to cagE gene. Our isolates exhibited 8 distinct arrangements of virulence patterns. The occurrence of cagA (35.6%) was the most prevalent pattern followed by cagA/babA2 (20%) and cagA/babA2/cagE (14.4%).Conclusion:In summary, as first report from Guilan province in the north of Iran, we showed significant association between the presence of babA2, cagE, and cagA genes in different types of gastric disorders.


Author(s):  
Beheshteh Haghparast-kenari ◽  
Tooran Nayeri ◽  
Shahabeddin Sarvi ◽  
Mohammad Taghi Rahimi ◽  
Ehsan Ahmadpour ◽  
...  

Background: Soil-transmitted parasites (STPs) are significant intestinal parasites that infect humans and animals and impose considerable burdens on human society and animal husbandry industries. Therefore, the present study aimed to determine the prevalence of parasitic elements of soil samples collected from the north of Iran. Methods: A total of 256 soil samples were collected from public parks, public places, vegetable gardens, sand heaps, and shadow areas near houses in the north of Iran and examined using the sucrose flotation method. Results: Out of 256 examined samples, 131 (51.2%) ones showed parasitic contamination including larvae (43%), oocysts (14.1%), and different eggs (6.6%). According to the results, the most and least common parasites observed in the samples were larvae (43%), as well as Toxascaris leonina, and Trichuris trichiura (0.4%), respectively. Moreover, the most and least contaminated locations were sand heaps (62.5%) and shadow areas near houses (45.6%), respectively. Regarding cities, Behshahr (68.3%) and Sari (67.5%) had the highest contaminated soil samples, whereas Chalus (37.5%) showed the lowest contamination. On the other hand, rural samples showed more contamination, compared to urban areas (P< 0.05). Conclusion: The findings of the present study indicate that the overall prevalence of STPs in examined areas and highly contaminated soil samples can be considered as a potential source of human contamination particularly tourists with STPs.


2021 ◽  
Vol 13 (11) ◽  
pp. 5861
Author(s):  
Marianne Pedinotti-Castelle ◽  
Pierre-Olivier Pineau ◽  
Kathleen Vaillancourt ◽  
Ben Amor

Transportation is a key factor in the fight against climate change. Consumer behavior changes in transportation are underrepresented in energy policies, even if they could be essential to achieve the fixed GHG emission reduction targets. To help quantify the role of behaviors in energy transition and their implications on the dynamics of an energy system, this study is conducted using the North American TIMES Energy Model, adapted to Quebec (Canada). A behavioral disruption scenario (an increase in carpooling) is introduced in the model’s transportation sector and is compared to a massive electrification scenario. Our results highlight the fact that a behavioral disruption can lead to the same GHG emission reductions (65%) by 2050 as an electrification policy, while alleviating different efforts (such as additional electrical capacity and additional costs) associated with massive electrification. Moreover, the results are sensitive to behavior-related parameters, such as social discount rates and car lifetimes.


1987 ◽  
Vol 24 (6) ◽  
pp. 1086-1097 ◽  
Author(s):  
Mel R. Stauffer ◽  
Don J. Gendzwill

Fractures in Late Cretaceous to Late Pleistocene sediments in Saskatchewan, eastern Montana, and western North Dakota form two vertical, orthogonal sets trending northeast–southwest and northwest–southeast. The pattern is consistent, regardless of rock type or age (except for concretionary sandstone). Both sets appear to be extensional in origin and are similar in character to joints in Alberta. Modem stream valleys also trend in the same two dominant directions and may be controlled by the underlying fractures.Elevation variations on the sub-Mannville (Early Cretaceous) unconformity form a rectilinear pattern also parallel to the fracture sets, suggesting that fracturing was initiated at least as early as Late Jurassic. It may have begun earlier, but there are insufficient data at present to extend the time of initiation.We interpret the fractures as the result of vertical uplift together with plate motion: the westward drift of North America. The northeast–southwest-directed maximum principal horizontal stress of the midcontinent stress field is generated by viscous drag effects between the North American plate and the mantle. Vertical uplift, erosion, or both together produce a horizontal tensile state in near-surface materials, and with the addition of a directed horizontal stress through plate motion, vertical tension cracks are generated parallel to that horizontal stress (northeast–southwest). Nearly instantaneous elastic rebound results in the production of second-order joints (northwest–southeast) perpendicular to the first. In this manner, the body of rock is being subjected with time to complex alternation of northeast–southwest and northwest–southeast horizontal stresses, resulting in the continuous and contemporaneous production of two perpendicular extensional joint sets.


1971 ◽  
Vol 36 (2) ◽  
pp. 170-182 ◽  
Author(s):  
David A. Breternitz ◽  
Alan C. Swedlund ◽  
Duane C. Anderson

AbstractAn isolated burial was excavated from the bank of a tributary of Gordon Creek, Roosevelt National Forest, northern Colorado. A preliminary report was prepared (D. Anderson 1966, 1967) but further analysis of the skeletal material and newly obtained cultural information add significantly to the documentation of the burial.The body of a woman, aged 25-30 years, was given primary interment in a pit coated with red ocher. The body was placed on its left side with the head to the north, was tightly flexed, and was also coated with red ocher. Burial accompaniments include a large precussion flaked biface or preform, a small biface used as a scraping tool, a hammerstone, an end scraper, a preform with fire pocks, cut and incised animal ribs, and a perforated elk incisor. A radiocarbon assay of bone material from the left ilium produced an age of 9700± 250 radiocarbon years: 7750 B.C. (GX-0530).No indications of habitation which might be associated with the burial were located in its immediate vicinity.A reconstruction of the burial ritual is attempted, and the skeletal remains are compared to other early human remains from North America.A summary of this paper was given at the 34th Annual Meeting of the Society for American Archaeology, May 3, 1969, in Milwaukee, Wisconsin.


2021 ◽  
Author(s):  
◽  
Evgeniya Kryssova

<p>The press was at the centre of the reform of the meaning of insanity, during its evolution from an equivocal eighteenth-century concept of melancholia to a medicalised Victorian notion of ‘lunacy’. During the late Georgian era newspapers provided a public forum for the opinion of newly emerging psychiatric practitioners and fostered the fears and concerns about mental illness and its supposed increase. The press was also the main source of news on crime, providing readers with reports on criminal insanity and suicide. In the first half of the nineteenth century, newspaper contents included official legal reports, as well as editorial commentary and excerpts from other publications, and newspaper articles can rarely be traced to one single author. Historians of British insanity avoid consulting periodical literature, choosing to use asylum records and coroners’ reports, as these sources are more straightforward than newspapers. However, Rab Houston’s recent study of the coverage of suicide in the north of Britain shows that the provincial press has been unjustly overlooked and can offer the material for a unique social analysis. Asylum records and coroners’ records do not contain the same detail provided in the press. Newspaper commentary can arguably reveal contemporary attitudes towards insanity and, moreover, sources such as asylum records only deal with the lower-class patients, as the middle- and upper-class insane were usually privately detained.  This thesis examines the press coverage of insanity in Leeds newspapers, and expands on previous research by looking at the way insanity was portrayed in the two most popular publications in the industrial region of Yorkshire: the Leeds Intelligencer and the Leeds Mercury. Chapter one focuses on legal cases that featured a verdict of insanity and explores the language used by the press in the reports of, mainly, violent domestic crime. Chapter two looks at reports of suicide and considers how contemporary views on financial and moral despondency influenced the portrayal of self-murder. Chapter three considers editorial articles that cannot be described as either crime or suicide reports. This chapter uncovers the presence of surprisingly humorous and entertaining articles on insanity found in editorials and the ‘Miscellany’ sections of the newspapers. Ultimately, this thesis argues that the reportage of insanity in the Leeds press was sensational, moralistic and selectively sympathetic; furthermore, such portrayal of insanity was reinforced throughout the body of the paper. Leeds newspapers segregated the insane by adopting a moralising tone and by choosing to use class-specific language towards the insane of different social ranks.</p>


Author(s):  
L. W. Byrne
Keyword(s):  
The Body ◽  

No description of the young of this species seems to exist, with the exception of that given by Emery (1) of some examples from Naples.The specimens here described were captured at Newquay, on the north coast of Cornwall, in September, 1898, and have been preserved in formol. They were caught in sandy pools surrounding or surrounded by rocks in the shelter of which they seemed to be fond of lying. When disturbed they darted with considerable rapidity from place to place, and in doing so were seemingly assisted by the large pectoral fins which were carried nearly at right angles to the body by the fish when at rest.


2018 ◽  
Vol 40 (1) ◽  
pp. 83-99
Author(s):  
Lindsay Dunbar ◽  
Mike Roy

The islands of Orkney have long been associated with examples of Viking-age activity and often yield unique and well preserved records from the Viking and Late Norse periods. Investigations on the island of Sanday in Orkney, as part of a call off contract for human remains between Historic Environment Scotland and AOC Archaeology Group, have revealed the presence of an inhumation in association with an iron knife. Further investigation reveals that the burial is that of an adolescent skeleton (12–17 years). The north-east/south-west alignment of the body, in a flexed position, and its association with an iron knife indicates a pre-Christian burial rite, in line with a 9th or 10th century AD date, which corresponds with radiocarbon dating carried out on the skeletal remains. This burial contributes a new record to the wealth of evidence from around this period within the surrounding landscape on the island of Sanday.


Sign in / Sign up

Export Citation Format

Share Document