scholarly journals Broadly Applicable Hydrogel Fabrication Procedures Guided by Yap/Taz‐Activity Reveal Stiffness, Adhesiveness and Nuclear Projected Area as Checkpoints for Mechanosensing

2021 ◽  
pp. 2102276
Author(s):  
Alessandro Gandin ◽  
Veronica Torresan ◽  
Lorenzo Ulliana ◽  
Tito Panciera ◽  
Paolo Contessotto ◽  
...  
Keyword(s):  
Projected Area

Ground Transportation: Ships

2017 ◽  
Author(s):  
Peter Rez
Keyword(s):  
Speed Of Sound ◽  
Projected Area ◽  
Drag Coefficients ◽  
Wetted Area ◽  
Large Container ◽  
Density Of Water

The drag on ships comes from movement through the water. There is a part that is analogous to the parasitic drag in aircraft, and a part that comes from creating the bow and stern waves—in some ways similar to the compressibility drag in aircraft that approach the speed of sound. Given that the density of water is more than 800 times that of air, speeds through the water are slower. Drag coefficients are specified differently for ships than for cars, trucks and airplanes. The relevant area is the total wetted area, and not the frontal projected area. Ships can be very efficient—the very powerful two-stroke diesels that power large container ships and tankers can be over 50% thermally efficient.

scholarly journals Effect of direct solar projected area factor on outdoor thermal comfort evaluation: A case study in Shanghai, China

Urban Climate ◽  
2022 ◽  
Vol 41 ◽  
pp. 101033
Author(s):  
Zhengrong Li ◽  
Xiwen Feng ◽  
Xueke Fan ◽  
Jingting Sun ◽  
Zhaosong Fang
Keyword(s):  
Thermal Comfort ◽  
Outdoor Thermal Comfort ◽  
Projected Area ◽  
Comfort Evaluation

scholarly journals Biochemical composition and shape-dimensional traits of rosehip genotypes

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Bünyamin Demir ◽  
Bahadır Sayıncı ◽  
Mehmet Yaman ◽  
Ahmet Sümbül ◽  
Ercan Yıldız ◽  
...  
Keyword(s):  
Biochemical Composition ◽  
Paired Comparison ◽  
Geometric Mean ◽  
Fruit Shape ◽  
Image Processing Technique ◽  
Shape Variation ◽  
Elliptic Fourier Analysis ◽  
Projected Area ◽  
Vertical Orientation ◽  
Linear Discriminant

Abstract In the present study, the biochemical composition and shape and dimensional traits of 25 rosehip (Rosa canina) genotypes were investigated. The shape and dimensional traits were determined by image processing technique. Seed-propagated rosehip genotypes belonging to R. canina were collected from the natural flora of Mesudiye (Ordu) and Talas (Kayseri) districts. Antioxidant activity (39.510–72.673 mmol · kg−1), total flavonoids (287.80–1,686.20 mg quercetin equivalent (QE) · kg−1) and total phenolics (38,519.40–79,080.60 mg gallic acid equivalent · kg−1) of the genotypes exhibited large variations. Width (12.2 mm) and thickness (12.5 mm) of fruits averages were found to be close to each other. The genotypes exhibited fruit lengths between 12.0 mm and 29.5 mm. Average projected area at horizontal orientation (179.7 mm2) was greater than the projected area at vertical orientation (120.4 mm2). Sphericity average was calculated as 71.4%. According to principal component (PC) analysis, the most important dimensional traits discriminating genotypes from each other were identified as surface area, geometric mean diameter and volume. In terms of shape attributes, distinctive differences were observed in sphericity, circularity, elongation and surface closure rates (SCR) of the genotypes. According to elliptic Fourier analysis (EFA), genotypes look like a sphere. In terms of shape, there were long, spherical, flat bottomed, pointed bottomed and asymmetric-looking genotypes indicating how environment and genotype affect the fruit shape. The greatest shape variation was transverse contraction and expansion. According to the clustering analysis for shape attributes, rosehip genotypes were classified into six groups. Dendrogram, scatter plots of linear discriminant analysis and paired comparison test results put forth the shape differences of the genotype successfully.

scholarly journals A research on the calculation method of car proportion based on image processing

2018 ◽  
Vol 169 ◽  
pp. 01006
Author(s):  
Hong-Wei Xiao ◽  
Chang-Jiang Jiang ◽  
Jia-Xing Zhai ◽  
Jing-Wei Chen
Keyword(s):  
Image Processing ◽  
Calculation Method ◽  
Processing Method ◽  
European American ◽  
Projected Area ◽  
Computer Image Processing ◽  
New Thinking ◽  
Length Width ◽  
Line Relationship ◽  
Total Average

The proportion of the car is one of the important parts of car styling design. The study of the car proportion is of great significance. The proportion of the car is determined by the technical conditions, functions and aesthetics. At present, there're not many studies on the area proportion of the car .There're studies on the line relationship and length, width, height proportion of the car. This paper uses computer image processing method to calculate the projected area proportion of the hatchback car. And it provides a new thinking and method for the car proportion study. The result shows that the projected area proportion values of the hatchback cars of European, American, Japanese, Korean and Chinese series on the market have a difference, but are close. And the total average projected area proportion values of car window and car body of the hatchbacks have been calculated.

Projected area measurement of complex 3D objects based on point cloud data

2021 ◽  
Author(s):  
Lujing Qian ◽  
Yubang Yang ◽  
Shuyu Sun ◽  
Tengchao Huang
Keyword(s):  
Point Cloud ◽  
Area Measurement ◽  
Point Cloud Data ◽  
Projected Area ◽  
Cloud Data ◽  
3D Objects

scholarly journals Flare of 1970 March 01: A Review and Further Evidence for Adiabatic Heating

1980 ◽  
Vol 86 ◽  
pp. 177-181
Author(s):  
C. Mätzler ◽  
H.J. Wiehl
Keyword(s):  
Thermal Plasma ◽  
Emission Measure ◽  
Impulsive Phase ◽  
Maximum Temperature ◽  
Adiabatic Process ◽  
Projected Area ◽  
X Ray ◽  
Time Profiles ◽  
Average Electron Density ◽  
Average Electron

SummaryThe microwave and hard-X-ray burst of 1970 March 01, 11:27 UT was found to originate from a common thermal plasma with a maximum temperature of 57 keV. The low coronal plasma with an average electron density of about 3.108cm−3 covered a projected area of 5.1018 cm2. In Fig. 1 the time profiles of the emission measure and the temperature are compared with the 10.5 GHz flux while Fig. 2 shows the reversible relationship between the hard X-ray emission measure and temperature during the impulsive phase. The arrows indicate the direction of increasing time. The dashed-dotted line, representing an adiabatic process with an index χ = 5/3, agrees well with the observations showing a compression followed by an expansion (Mätzler et al. 1978).

scholarly journals Growth Analysis of Wheat Using Machine Vision: Opportunities and Challenges

Sensors ◽  
2020 ◽  
Vol 20 (22) ◽  
pp. 6501
Author(s):  
Mohammad Ajlouni ◽  
Audrey Kruse ◽  
Jorge A. Condori-Apfata ◽  
Maria Valderrama Valencia ◽  
Chris Hoagland ◽  
...  
Keyword(s):  
Growth Rate ◽  
Machine Vision ◽  
Leaf Area ◽  
Relative Growth Rate ◽  
Growth Analysis ◽  
Growth Parameters ◽  
Dry Weight ◽  
Projected Area ◽  
Relative Growth ◽  
Leaf Dry Weight

Crop growth analysis is used for the assessment of crop yield potential and stress tolerance. Capturing continuous plant growth has been a goal since the early 20th century; however, this requires a large number of replicates and multiple destructive measurements. The use of machine vision techniques holds promise as a fast, reliable, and non-destructive method to analyze crop growth based on surrogates for plant traits and growth parameters. We used machine vision to infer plant size along with destructive measurements at multiple time points to analyze growth parameters of spring wheat genotypes. We measured side-projected area by machine vision and RGB imaging. Three traits, i.e., biomass (BIO), leaf dry weight (LDW), and leaf area (LA), were measured using low-throughput techniques. However, RGB imaging was used to produce side projected area (SPA) as the high throughput trait. Significant effects of time point and genotype on BIO, LDW, LA, and SPA were observed. SPA was a robust predictor of leaf area, leaf dry weight, and biomass. Relative growth rate estimated using SPA was a robust predictor of the relative growth rate measured using biomass and leaf dry weight. Large numbers of entries can be assessed by this method for genetic mapping projects to produce a continuous growth curve with fewer replicates.

scholarly journals Experimental and Numerical Investigation of Self-Burial Mechanism of Pipeline with Spoiler under Steady Flow Conditions

2019 ◽  
Vol 7 (12) ◽  
pp. 456 ◽  
Author(s):  
Woo-Dong Lee ◽  
Hyo-Jae Jo ◽  
Han-Sol Kim ◽  
Min-Jun Kang ◽  
Kwang-Hyo Jung ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Steady Flow ◽  
Pressure Field ◽  
Dynamic Pressure ◽  
The Self ◽  
Navier Stokes ◽  
Flow Conditions ◽  
Projected Area ◽  
Experimental Values ◽  
Subsea Pipelines

Herein, hydraulic model experiments and numerical simulations were performed to understand the self-burial mechanism of subsea pipelines with spoilers under steady flow conditions. First, scour characteristics and self-burial functions according to the spoiler length-to-pipe diameter ratio (S/D) were investigated through hydraulic experiments. Further, the Navier–Stokes solver was verified. The experimental values of the velocity at the bottom of the pipeline with a spoiler and the pressure on the sand foundation where the pipeline rested were represented with the degree of conformity. Scour characteristics of a sand foundation were investigated from the numerical analysis results of the velocity and vorticity surrounding the pipelines with spoilers. The compilation of results from the hydraulic experiment and numerical analysis showed that the projected area increased when a spoiler was attached to the subsea pipes. This consequently increased the velocity of fluid leaving the top and bottom of the pipe, and high vorticity was formed within and above the sand foundation. This aggravated scouring at the pipe base and increased the top and bottom asymmetry of the dynamic pressure field, which developed a downward force on the pipeline. These two primary effects acting simultaneously under steady flow conditions explained the self-burial of pipelines with a spoiler attachment.

Sign in / Sign up

Export Citation Format

Share Document