Study of slow-drift damping on wind tracking performance of a new-type FOWT ‘Optiflow’ with single-point mooring

2021 ◽  
Vol 242 ◽  
pp. 110131
Author(s):  
Sharath Srinivasamurthy ◽  
Saika Iwamatsu ◽  
Kazuki Hashimoto ◽  
Hideyuki Suzuki ◽  
Toshiki Chujo ◽  
...  
Keyword(s):  
Single Point ◽  
Tracking Performance ◽  
Slow Drift ◽  
New Type

scholarly journals Sardinian G gamma-HPFH: a T----C substitution in a conserved "octamer" sequence in the G gamma-globin promoter

Blood ◽  
1988 ◽  
Vol 71 (3) ◽  
pp. 815-817 ◽  
Author(s):  
S Ottolenghi ◽  
S Nicolis ◽  
R Taramelli ◽  
N Malgaretti ◽  
R Mantovani ◽  
...  
Keyword(s):  
Globin Gene ◽  
Single Point ◽  
Point Mutations ◽  
Fetal Hemoglobin ◽  
Regulatory Elements ◽  
Globin Genes ◽  
Gamma Globin ◽  
New Type ◽  
Hereditary Persistence ◽  
Globin Promoter

Abstract A survey of hemoglobinopathies in Northern Sardinia allowed the identification of two subjects heterozygous for a new type of G gamma hereditary persistence of fetal hemoglobin (HPFH). The G gamma-globin gene from the HPFH chromosome shows the presence of a T----C substitution 175 nucleotides upstream of the CAP site, adding a new example of single-point mutations occurring in the promoter region of the gamma-globin genes and linked to HPFH phenotypes. In this case the mutation affects the 3′ end nucleotide of a conserved octamer sequence known to be present in other regulatory elements of several genes.

The Suction Mooring, A New Type of Offshore Single Point Mooring

1995 ◽  
Author(s):  
Jens Korsgaard ◽  
Louk Hutter
Keyword(s):  
Single Point ◽  
New Type

Electrically Assisted Global Springback Elimination in AMS-T-9046 Titanium After Single Point Incremental Forming

2016 ◽  
Author(s):  
Tyler J. Grimm ◽  
John T. Roth ◽  
Ihab Ragai
Keyword(s):  
Sheet Metal ◽  
Manufacturing Industry ◽  
Incremental Forming ◽  
Single Point ◽  
Electrical Current ◽  
Stress Concentrations ◽  
Wall Angle ◽  
Element Analysis ◽  
New Type ◽  
Springback Reduction

Incremental Forming (IF) is a new type of sheet metal forming method being investigated by many because of its great potential in the manufacturing industry. The IF method forms sheet metal by use of a hemispherically shaped tool which follows a specified path that gradually forms the material as it traverses across the material. No dies are needed for this process, which is where the potential lies. IF is currently being researched in order to reduce the drawbacks of the process. These drawbacks include a maximum formable wall angle, degraded surface finish, low part accuracy, and local and global springback. This research focuses on the reduction of global springback, which arises from the stresses induced in the workpiece. This research approaches the problem with the use of electrical paths ran through the residual stress concentrations. The stress concentrations were mapped using Finite Element Analysis (FEA) and multiple tests were done to see which path had the greatest effect on springback. It was concluded that the best paths to apply electrical current through in order to reduce springback in an incrementally formed truncated pyramid are: along the formed corners from top to bottom, across the upper section of the formed corner, and along each side of the inner formed square. In addition, it was found that the path the electricity takes has a greater effect on the amount of springback reduction than the amount of paths applied. It is hypothesized that this is due to the stiffening effects of certain stresses.

scholarly journals Sardinian G gamma-HPFH: a T----C substitution in a conserved "octamer" sequence in the G gamma-globin promoter

Blood ◽  
1988 ◽  
Vol 71 (3) ◽  
pp. 815-817
Author(s):  
S Ottolenghi ◽  
S Nicolis ◽  
R Taramelli ◽  
N Malgaretti ◽  
R Mantovani ◽  
...  
Keyword(s):  
Globin Gene ◽  
Single Point ◽  
Point Mutations ◽  
Fetal Hemoglobin ◽  
Regulatory Elements ◽  
Globin Genes ◽  
Gamma Globin ◽  
New Type ◽  
Hereditary Persistence ◽  
Globin Promoter

A survey of hemoglobinopathies in Northern Sardinia allowed the identification of two subjects heterozygous for a new type of G gamma hereditary persistence of fetal hemoglobin (HPFH). The G gamma-globin gene from the HPFH chromosome shows the presence of a T----C substitution 175 nucleotides upstream of the CAP site, adding a new example of single-point mutations occurring in the promoter region of the gamma-globin genes and linked to HPFH phenotypes. In this case the mutation affects the 3′ end nucleotide of a conserved octamer sequence known to be present in other regulatory elements of several genes.

Guidelines for Selecting Single-Point Urban and Diamond Interchanges: Nationwide Survey and Literature Review

1998 ◽  
Vol 1612 (1) ◽  
pp. 48-54
Author(s):  
Michelle J. Smith ◽  
Nicholas J. Garber
Keyword(s):  
Literature Review ◽  
Traffic Congestion ◽  
Single Point ◽  
Nationwide Survey ◽  
The United States ◽  
Sources Of Information ◽  
Traffic Demand ◽  
Geometric Conditions ◽  
New Type ◽  
Diamond Interchanges

Metropolitan areas in the United States are experiencing a steep increase in traffic growth and traffic congestion on their urban freeways. In the past, the most prevalent type of urban interchange has been the diamond interchange (DI). In more recent years, however, to overcome the need for significant additional right-of-way that is generally required for this type of interchange and still respond to increased traffic demand, a new type of interchange has emerged: the single-point urban interchange (SPUI). Traffic engineers do not agree about the relative operational efficiency of the SPUI compared with the DI. Also, the unfamiliar geometry and operation of the SPUI and its large, uncontrolled conflict area have raised several concerns about the safety of motorists who travel through it. The purpose of this study was to evaluate and compare the safety and operational characteristics of the SPUI and DI and to develop guidelines that identify traffic and geometric conditions that favor one over the other. We surveyed state traffic engineers across the nation about their experiences and opinions of the two interchanges in terms of operational performance and safety. A complete literature review on the subject revealed significant findings as well. We used both of these sources of information to develop guidelines to aid traffic engineers in selecting and designing the appropriate type of interchange.

A New Type Of Single Point Mooring Developed And Built In One Year

1980 ◽  
Author(s):  
Robert H. Vilain ◽  
Jean L. Pinto ◽  
Daniel M.J. Guillaume
Keyword(s):  
Single Point ◽  
New Type ◽  
One Year

Seismic Reliability of UHV Porcelain arrester with Damping System

2014 ◽  
Vol 8 (1) ◽  
pp. 222-228 ◽  
Author(s):  
Xuesong Zhang ◽  
Meigen Cao ◽  
Zhicheng Lu
Keyword(s):  
Fragility Curves ◽  
Single Point ◽  
Analysis Method ◽  
Element Analysis ◽  
Seismic Reliability ◽  
Seismic Motion ◽  
Earthquake Model ◽  
New Type ◽  
The Mean ◽  
Very High

The vulnerability of the UHV porcelain arrester is very high under strong earthquake. To rise seismic reliability of the UHV porcelain arrester, a new type lead damper, which is a new patent product, is installed at the bottom of the equipment. To investigate the damping effect of the dampers, the experimental research and finite element analysis on seismic behavior of the UHV porcelain arrester with and without the dampers are carried out by means of single point input and single point output(SISO)measurement. The analyzed results show that the damper is well functioning, effectively decreasing stochastic earthquake response of the UHV porcelain arrester, thus the seismic reliability of porcelain arrester is improved. A seismic reliability analysis method is put forward based on the stochastic earthquake model .The mean and standard deviation of the seismic responses of the arrester with and without the dampers under the different site conditions are gained based on physical stochastic seismic motion model. Then its seismic reliability is calculated by the FOSM, and the fragility curves of the arrester are built. Calculation result shows that seismic reliability of the arrester with the dampers can be effectively enhanced under Ms 8.0 earthquake. A conclusion is given that the damper is capable to improve the seismic reliability of the UHV porcelain arrester effectively, and may be widely applied to the seismic design of the UHV porcelain arrester.

Influence of slow-drift damping on the weathervaning of single-point moored floating offshore wind turbines

2020 ◽  
Vol 217 ◽  
pp. 107899
Author(s):  
Yasunori Nihei ◽  
Sharath Srinivasamurthy ◽  
Kazuki Hashimoto ◽  
Kazuhiro Iijima
Keyword(s):  
Wind Turbines ◽  
Single Point ◽  
Offshore Wind ◽  
Offshore Wind Turbines ◽  
Slow Drift ◽  
Floating Offshore Wind Turbines

Two-Level Signalized Intersection

2008 ◽  
Vol 2060 (1) ◽  
pp. 53-64 ◽  
Author(s):  
Eon Kyo Shin ◽  
Jang Hee Lee ◽  
Ju Hyun Kim ◽  
Jung Sik Kim ◽  
Yong Woo Jeong
Keyword(s):  
Traffic Congestion ◽  
Single Point ◽  
High Volume ◽  
Complete Separation ◽  
Signalized Intersection ◽  
Traffic Conditions ◽  
Delay Times ◽  
Traffic Volumes ◽  
New Type ◽  
Intersection Types

Severe traffic congestion often occurs at intersections of high-volume traffic arteries. To reduce this congestion, innovative intersection designs such as the single-point urban interchange (SPUI), center-turn overpass (CTO), and echelon interchange (EI) have been implemented. This paper introduces a new type of intersection, the two-level signalized intersection (TLSI), which improves the efficiency of intersection operations under a wide variety of traffic conditions. The paper compares the TLSI with other innovative intersection types. Unlike the SPUI, CTO, or EI, the TLSI provides for complete separation of east–west and north–south traffic. The TLSI also enables the use of directional separation and leading, lagging, or overlapping lefts on both upper and lower levels. Simulation results indicate that, compared with these other innovative intersection types, the TLSI has the shortest delay times in most evaluation scenarios as well as the least sensitivity to variations in traffic volume. However, the TLSI shows significant delay when traffic volumes on the major and minor roads are vastly different.

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