The relationship between physical parameters and wear of dental composites

Canal system conveyance efficiency (CSCE ) is a basic parameter of engineering construction and water management of the irrigation districts, either the response of operation status of an irrigation canal system. It plays great significance in searching quantity relationship between ICSCE and other basic parameters reflecting the condition of irrigation engineering. This paper, gravity irrigation districts in Zhejiang province as an example, sets up the relationship between basic parameters such as irrigation canal lining rate, canal flow and the CSCE, based on determining the CSCE in 61 typical gravity irrigation districts. And it also reflects the influence of basic parameters on CSCE, having a certain accuracy. This result plays a positive role on the further research and actual work on CSCE.

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Pengantar Geofisika

10.52574/syiahkualauniversitypress.196 ◽

2020 ◽

Author(s):

Muhammad Syukri ◽

Keyword(s):

Geophysical Methods ◽

Magnetic Method ◽

Scientific Concept ◽

Physical Parameters ◽

Study Program ◽

The Earth ◽

Engineering Study ◽

Close Relationship ◽

Study Programs ◽

The Relationship

This introductory book on Geophysics was created to support teaching materials for basic subjects in the Geophysical Engineering Study Program, Physics Study Program, and related Study Programs in addition to other major books. This book introduces the basics of the earth and the structure of the earth, as well as the layers of the earth globally. Furthermore, it is also shown how the relationship between geophysics and other related branches of science within the sphere of geoscience. So that each scientific concept is clearly distinguished, although sometimes there is a very close relationship. In another section, various geophysical methods are described, starting from the basic theory, working principles, approaches and applications. All physical parameters that are applied from each discussion such as seismic method, geoelectric method and IP, gravity method, georadar method, and magnetic method. The hope is that this book can provide benefits for readers and enthusiasts of geoscience.

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Studies of Extended Southern Galactic Clusters and Loose Star Groupings using the Bosscha Schmidt Telescope

International Astronomical Union Colloquium ◽

10.1017/s0252921100022193 ◽

1995 ◽

Vol 148 ◽

pp. 365-369

Author(s):

S. D. Wiramihardja ◽

B. Hidayat ◽

I. Tejawijaya ◽

Hakim ◽

L. Malasan

Keyword(s):

Southern Hemisphere ◽

Physical Reality ◽

Physical Parameters ◽

Schmidt Telescope ◽

Luminosity Functions ◽

Galactic Clusters ◽

The Relationship

One of the programs conducted with the Bosscha Schmidt telescope is the study of loose star groupings and extended galactic clusters in the southern hemisphere (The 1963; Hidayat & Wiramihardja 1978; Hidayat et al. 1994). The aims of the study are, in short, to: 1.investigate or to confirm the physical reality of the loose groupings.2.study the relationship between extended clusters or loose groupings with their environment.3.derive their physical parameters which ultimately can be used to construct the luminosity functions of the objects.The purpose of the present paper is to present one of our results for the extended cluster OCL 1104-584 (NGC 3532). The results of studies of loosegrouping objects taken from the list of Loden (1979) will be presented elsewhere.

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Correlations among Physical and Mechanical Parameters of Rocks

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.865.366 ◽

2017 ◽

Vol 865 ◽

pp. 366-372

Author(s):

Jing Sen Liu ◽

Hai Bo Li ◽

Guo Kai Zhang ◽

Jian Deng

Keyword(s):

Shear Modulus ◽

Young’S Modulus ◽

Young's Modulus ◽

P Wave ◽

Physical Parameters ◽

Dynamic Shear Modulus ◽

Regression Equations ◽

Mechanical Parameters ◽

P Wave Velocity ◽

The Relationship

In order to improve the accuracy of the rock mechanical parameters, the correlations among physical and mechanical parameters were investigated. A large number of laboratory testing results curried out on 408 rock specimens including metamorphic rocks, sedimentary rocks and igneous rocks. Through the statistical analysis of the laboratory test data, several regression equations among rock material parameters were established. The research suggests that, in addition to Poisson's ratio, the mechanical parameters (unconfined compressive strength (UCS), elastic Young’s modulus, shear modulus) relate well to physical parameters (porosity, P-wave velocity), and the relationships are mainly described by power and exponential correlations which have good squared regression coefficients. The correlation between elastic Young’s modulus and dynamic elastic modulus was established, as well as the relationship between shear modulus and dynamic shear modulus.

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Analysis of the Temporal-Spatial Characteristics of Cloud Parameters and the Relationship with the Precipitation over Qilian Mountains Area in Northwest China

10.5194/egusphere-egu2020-5226 ◽

2020 ◽

Author(s):

Wu Zhang ◽

Ying Wang ◽

Qingyun Zhao ◽

Chen Pu ◽

Yan Chen

Keyword(s):

Water Resources ◽

Water Resource ◽

Northwest China ◽

Cloud Water ◽

Qilian Mountains ◽

Physical Parameters ◽

Cloud Parameters ◽

Four Seasons ◽

Cloud Parameter ◽

The Relationship

Qilian mountains, located in the arid and semi-arid region of Northwest China, has more amount of natural precipitation than that on both north and south sides, with unique geographical environment and abundant water vapor supply. It is a very important water resource for the surrounding areas. To deeper understand the features of cloud over the areas is significant for the utilization of cloud water resources and sustainable development in this region. In this article, based on MOD08-M3 data, grid ground precipitation data and FY-2 series satellite cloud parameter inversion products, the spatial and temporal features of cloud macro/micro physical parameters, such as Cloud Amount&#65288;CA&#65289;, Cloud Water Path&#65288;CWP&#65289;, Cloud Top Temperature&#65288;CTT&#65289;, Cloud Top Pressure&#65288;CTP&#65289;, Cloud Optical Depth&#65288;COD&#65289; and Cloud Particle Effective Radius (CPER) over Qilian Mountains area were analyzed, as well as the relationship between the precipitation and cloud parameters. The results are as follows:<ul><li>(1) The regional average values of CA, CWP, CTP, COD and CPER in Qilian Mountains area are 55.50 %, 148.95 g/m&#178;, -21.13 &#8451;, 456.56 hPa, 12.64 and 21.04 &#956;m, respectively. From 2006 to 2015, CA, CWP, COD and CPER decreased by 2.3 %, 21 g/m&#178;, 0.68 and 0.51 &#956;m, respectively. CTT and CTP increased by 1.9 &#8451; and 65.2 hPa, respectively. Cloud water resources over the area are abundant.</li> <li>(2) There is the richest cloud water resource over the main area of Qilian Mountains, and the cloud parameter condition in Wushaoling area is the best for precipitation. The high value areas of CA in four seasons are distributed in Xining and surroundings, main and south part of mountain range, and Lenghu area, respectively. The high value areas of CWP in four seasons are located in the northeast, north-middle the main part of mountain area and the eastern side of Subei, respectively. The high value areas of COD are located in the east of Subei in winter and in the southeast of the study area in other seasons. The high value areas of CPER in spring are located in the region except Hexi Corridor. In other seasons they are located between Lenghu and Subei, Subei and Tuole, and in the northeast of range, respectively.</li> <li>(3) The monthly precipitation is positively correlated with CA , CWP, COD, but negatively correlated with CTT and CTP. The relationship between CPERs and precipitation is positive in January, April, July, November and December, but negative in other months. CA and CPERs are most correlated with precipitation in May and September, respectively. while the correlation between other cloud parameters and precipitation are the highest in January.</li> <li>(4) When the values of COD and CPER are too small or too large, the actual precipitation will be limited.</li> </ul>Key words: Cloud physical parameters; Precipitation; Water resource; Qilian Mountains

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Research on Layered Design of Ring-Shaped Acoustic Cloaking Using Bimode Metamaterial

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.687-691.4399 ◽

2014 ◽

Vol 687-691 ◽

pp. 4399-4404

Author(s):

Qian Jin Xiao ◽

Lei Wang ◽

Tao Wu ◽

Zhi Gao Zhao

Keyword(s):

Design Method ◽

Micro Milling ◽

Physical Parameters ◽

Microstructure Design ◽

Research Results ◽

Processing Capability ◽

Microstructure Model ◽

Layered Design ◽

The Relationship ◽

Transformation Acoustics

The microstructure design of acoustic cloaking is the key to realizing physical parameters required, and it is also closely correlated with realization of such projects as processing capability. The paper investigates the layered design of ring-shaped acoustic cloaking based on BM. According to the principle of transformation acoustics and the theory of PM cloaking, physical parameters of the acoustic cloaking are offered. Further, the relationship between the parameters of each layer of BM microstructure and the physical parameters of acoustic cloaking made of BM is determined. And the layered design of the acoustic cloaking are discussed. At last, the microstructure model of the acoustic cloaking is designed, and the ultra-precise micro-milling center is adopted for trial produce, to make a sample of the acoustic cloaking. The research results provide a kind of layered design method for ring-shaped acoustic cloaking, and indicat that the acoustic cloaking is realizable in engineering.

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Comparison of methods for determining the physical parameters of the resonator of a solid-state wave gyroscope

10.22213/2658-3658-2020-6-11 ◽

2020 ◽

Author(s):

Ramis I. Mingazov ◽

◽

Fedor I. Spiridonov ◽

Ivan A. Vikhlyaev ◽

Konstantin V. Shishakov

Keyword(s):

Solid State ◽

Quartz Resonator ◽

Physical Parameters ◽

Dynamic Parameters ◽

State Wave ◽

Algorithmic Support ◽

Hemispherical Resonator ◽

Technological Stage ◽

And Control ◽

The Relationship

The article deals with the problem of identifying the dynamic parameters of the resonator of a solid-state wave gyroscope, based on the signals measured when the sensor is operating in free-run mode. The search for the dynamic parameters of a solid-state wave gyroscope is one of the most important operations of the quality control of its production. The paper describes two methods for determining the physical parameters of a quartz resonator of a solid-state wave gyroscope. For each method, the mathematical substantiation of the relationship between the dynamic behavior of the resonator and its physical parameters is given. On the basis of each of the techniques, an algorithmic support for the extraction of the physical parameters of the resonator of a solid-state wave gyroscope is presented. The research of the accuracy of calculating the visual parameters by the described methods on experimental data of a resonator with known parameters has been carried out. The results obtained show the practical applicability of the described methods. An example of using the methods described in the work is the identification and control of the dynamic parameters of a quartz hemispherical resonator of a solid-state wave gyroscope at the technological stage of “balancing”.

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Ecophysiological interactions in species of peacock bass Cichla spp. from the Amazon

Revista Ibero-Americana de Ciências Ambientais ◽

10.6008/cbpc2179-6858.2020.005.0053 ◽

2020 ◽

Vol 11 (5) ◽

pp. 594-599

Author(s):

Philip Dalbert da Silva Castro ◽

Daniel Da Silva Ladislau ◽

Maiko Willas Soares Ribeiro ◽

Antônia Jaqueline Vitor de Paiva ◽

Ariany Rabello da Silva Liebl ◽

...

Keyword(s):

Principal Component Analysis ◽

Physical Properties ◽

Principal Component ◽

Ornamental Fish ◽

Plasma Metabolites ◽

Physical Parameters ◽

Sport Fishing ◽

Fish Market ◽

The Relationship ◽

Peacock Bass

The peacock bass species Cichla spp. are economically important in the Amazon region, being used in food, sport fishing and the ornamental fish market. The aims of present study was investigate the ecophysiological interactions and the relationship to the physical parameters of the water. In order to compare and ecologically correlate the species of peacock bass (Cichla monoculus, Cichla temensis and Cichla vazzoleri) in Lake Balbina, Presidente Figueiredo. The total of 45 animals, 15 individuals of each species, was captured with rod and reel, hand line with natural and artificial bait. The animals blood was removed by means of caudal puncture and the hematological data were determined according to methodology previously described in the literature. The analysis of water physical properties was determined during the collections. The Principal Component Analysis (PCA) was used for observations of interactions (60.00%). The PCA of the erythrogram showed an interaction of 86.26%, the thrombogram and leukogram of the peacock bass species showed no interaction. The PCA of the plasma metabolites showed no interaction with a rate of 51.55%, however, there is a tendency in the x axis, where the species C. monoculos presents distinct ecophysiological patterns of C. temensis and C. vazzoleri. In the analysis of the physical properties of the water, was observed interaction 96.59%, where in the X axis the species C. monoculos and C. vazzoleri inhabit exclusive localities. It is possible to infer that C. monoculos presents a different pattern compared to other species.

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Experimental Investigation of Adaptive Thermal Comfort in French Healthcare Buildings

Buildings ◽

10.3390/buildings11110551 ◽

2021 ◽

Vol 11 (11) ◽

pp. 551

Author(s):

Zoubayre El Akili ◽

Youcef Bouzidi ◽

Abdelatif Merabtine ◽

Guillaume Polidori ◽

Amal Chkeir

Keyword(s):

Thermal Comfort ◽

Thermal Environment ◽

Winter Season ◽

Environmental Parameters ◽

Physical Parameters ◽

Predicted Mean Vote ◽

Adaptive Thermal Comfort ◽

Important Research Topic ◽

Radiant Temperature ◽

The Relationship

The thermal comfort requirements of disabled people in healthcare buildings are an important research topic that concerns a specific population with medical conditions impacted by the indoor environment. This paper experimentally investigated adaptive thermal comfort in buildings belonging to the Association of Parents of Disabled Children, located in the city of Troyes, France, during the winter season. Thermal comfort was evaluated using subjective measurements and objective physical parameters. The thermal sensations of respondents were determined by questionnaires adapted to their disability. Indoor environmental parameters such as relative humidity, mean radiant temperature, air temperature, and air velocity were measured using a thermal microclimate station during winter in February and March 2020. The main results indicated a strong correlation between operative temperature, predicted mean vote, and adaptive predicted mean vote, with the adaptive temperature estimated at around 21.65 °C. These findings highlighted the need to propose an adaptive thermal comfort strategy. Thus, a new adaptive model of the predicted mean vote was proposed and discussed, with a focus on the relationship between patient sensations and the thermal environment.

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Hubungan Keanekaragaman dan Keberadaan Plankton Terhadap Faktor Fisika Kimia Sungai Batanghari

Jurnal Daur Lingkungan ◽

10.33087/daurling.v1i2.11 ◽

2018 ◽

Vol 1 (2) ◽

pp. 55

Author(s):

Marhadi Marhadi ◽

Ira Galih Prabasari ◽

Ria Pratiwi

Keyword(s):

Water Pollution ◽

Lead Chloride ◽

Primary Data ◽

Physical Parameters ◽

Strongly Correlated ◽

Phosphate Nitrate ◽

Pollutant Level ◽

Physical And Chemical ◽

The Relationship

Water pollution can not only be measured only by chemical and physical parameters, Plankton have properties that are always moving so that they can be used as indicators of water pollution. Plankton play an important role in influencing the primary productivity of river waters. The purpose of this study was to determine the relationship between the diversity and presence of plankton to the quality of the Batanghari River. The study was conducted in February 2018 in Jambi City. Primary data taken in the form of concentrations of physical and chemical parameters include turbidity, pH, TDS, BOD, COD, DO, Phosphate, Nitrate, Nitrite, Ammonia, Lead, Chloride, Sulfate and the amount of plankton abundance (ind / L) on the Batanghari River. The time of sampling was in the morning and evening on the same day. The results showed that the relationship between the existence of plankton and the quality of the Batanghari River showed the condition of the Batanghari River in Jambi City was in phase a - Mesosaprobic (heavy pollutant level). Parameters of pH, COD, Phosphate, Nitrite, Lead and Chloride are moderately correlated to phytoplankton, while TDS, BOD, DO, Nitrate and Ammonia are weakly correlated with phytoplankton. And for temperature parameters it is strongly correlated with phytoplankton. For correlation to zooplankton, parameters of pH, TDS, BOD, COD, COD, DO, Phosphate, Nitrate, Nitrite, Lead, chloride are very weakly correlated while ammonia and turbidity correlate moderately to zooplankton.

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