bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on Emergency Treatment Measures for Oil and Gas Pipeline Passing Though Mining Subsidence Area
Authors: Wang Dongyuan , Tan Qiuxia , Yang Jian , Zhang Zhenyong
Published: February 2021

With the continuous increase in the mileage of long-distance oil and gas pipelines in China, more and more pipelines need to pass through prospecting areas, mining areas and mined-out areas. In these areas, underground subsidence and surface cracking may occur due to over-exploitation of underground minerals, which may cause damage to buried oil and gas pipelines. In order to ensure the safety of the pipelines in these areas, it is necessary to put forward appropriate measures for the management of different mined-out areas. This is a new topic that needs further study for the mined-out area pipelines. This paper takes the geological disasters of the collapsible subsidence suffered by the Puxian-Hejin gas pipeline as an example, through the establishment of a settlement monitoring system for mined-out area and the analysis and verification of pipeline stress status, comprehensive physical survey, on-site monitoring data analysis, expert experience, calculation and analysis of pipeline stress, evaluation of geological safety in mined-out area, and emergency measures such as trench excavation, interception and drainage, weld protection, timely pipe lift, decompression and gas transmission, and monitoring and early warning measures to effectively reduce the risk of pipeline damage and ensure the safe operation of pipelines. The treatment measures have reference and reference significance for the treatment of oil and gas pipelines in mined-out areas.
Hazard Identification of Portal Crane In-use & Research on Its Application In a Shipbuilding Company
Authors: Huang Zheng-qiu , Tong Yao-ting , Ren Li-xin , Ouyang Wei-ping
Published: February 2021

Fatigue damage is always the main cause of the crane damage. The prediction method of fatigue life take far reaching impact on the design and service life of the crane. Therefore, it is extremely important to study the fatigue life prediction method of crane. In this paper, the existing fatigue life prediction methods are summarized systematically. And the fatigue life research was involved in metal material, mechanics, vibration mechanics, fatigue theory, fracture mechanics and so on, which made a difference between the predicted result and the actual life. The emergence and application of new technologies promote the development of the fatigue life evaluation methods, which could debase the risk of portal crane in use significantly.
Thermal Performance and Insulation Structure Design of ± 400kV Valve Side Bushing of Converter
Authors: Shiling Zhang , Lin Gong
Published: February 2021

The design features of inner and outer insulation structure of valve side bushing of ± 400kV converter transformer are representative. Its main insulation structure type and design method are basically consistent with those of ± 800kV converter transformer valve side bushing in China, but its design margin is lower than that of UHV converter transformer bushing, and the valve side bushing of ± 400kV converter transformer is used more in converter valve hall, so its insulation structure design and engineering should be It is necessary to analyze and discuss the insulation structure design of valve side bushing of ± 400kV converter transformer. In this paper, ± 400kV converter transformer valve side bushing insulation accident is analyzed in detail, from which the specific causes of insulation failure are summarized, providing reference for the design of internal and external insulation structure of converter transformer bushing. Based on this, this paper first analyzes the heating mechanism of the double guide rod structure of the converter bushing, gives the design size of the double guide rod structure from the theoretical analysis point of view, further optimizes the core insulation structure of the converter bushing, and gives the external insulation design scheme of the converter bushing from the perspective of internal and external insulation coordination, and checks and calculates the overall electric field distribution The radial electric field strength is controlled at 3.11kV/mm under working voltage and 0.51kV/mm under power frequency withstand voltage, which meet the requirements of electric field strength control in the design of ± 400kV converter bushing. Furthermore, the valve side bushing of the developed ± 400kV converter transformer is tested, and typical type tests such as power frequency dry withstand voltage test and partial discharge measurement, lightning impulse dry withstand voltage test and partial discharge measurement and temperature rise test are passed. The research results of this paper theoretically give the control requirements for the field strength design of the valve side bushing of converter transformer, and optimize the design size of its double guide rod structure, and develop a prototype to prove the effectiveness and reliability of the theoretical analysis. The above research results have good theoretical guidance value and practical significance for the insulation structure design and operation state maintenance of valve side bushing of ± 400 kV converter transformer.
Research on Aerosol Retrieval Algorithm of Multi-parameter Optimization Model
Authors: Yue Jiabao , Xie Donghai , Yu Jie , Zhu Lin , He Zhengyang
Published: February 2021

Aerosols can have an important impact on human society. Remote sensing method plays an important role in the aerosol retrieval. The aerosol retrieval SARA algorithm isn’t required a lot of prior knowledge and look-up table comparing with the traditional aerosol retrieval algorithms. However, the retrieval results of SARA algorithm are affected by the acquisition time differences and instability of MODIS data and AERONET data. In order to improve SARA algorithm, this paper studies the nonlinear optimization methods to construct the three-parameter model and the five-parameter model. And used the model to optimize the input parameters to improve the accuracy of aerosol retrieval. The correlation of five-parameter optimization results with AERONET sites Beijing and XiangHe is 0.7454 and 0.701 respectively, which is better than that of three-parameter optimization model’s 0.6012, 0.6479, and both are higher than SARA’s 0.3844 and 0.526.
Analysis on the Abnormal Distribution of Large-scale Rainstorm in Guangxi Caused by typhoon Bailu (1911)
Authors: Huang Xiaoyan , He Li , Huang Ying , Zhao Huasheng , Jin Jian
Published: February 2021

Typhoon "Bailu" of 1911 caused extensive rainstorms in Guangxi,and its rain intensity and distribution were abnormal. The rainstorm was mainly concentrated in the east and south, and the rainstorm belt was northeast-southwest. Many forecast products, including subjective and objective forecasts, showed deviations in the area and intensity of this rainstorm. The weather dynamic diagnosis and analysis method was used here to analyze the causes of the abnormal distribution of the rainstorm based on conventional meteorological data and European centre reanalysis data, satellite cloud images, and mesoscale automatic stations. The results showed that this rainstorm caused by "Bailu" was formed by the coupling of low-and-upper level jets circulation and strong water vapor convergence. The guidance of the subtropical high airstream caused the clouds on the southwest side of the "Bailu" to move slowly westward. The input of the southwest monsoon airstream revived, strengthened and maintained the "Bailu" vortex. The plenishment of abundant water vapor caused continuous and concentrated rainstorm in the eastern and southern regions of Guangxi. The asymmetric structure of typhoons was also an important reason of abnormal precipitation distribution.
Analysis of dark matter based on space physics
Authors: Chen Ruijie
Published: February 2021

Cosmological observations indicate that most of the matter in the universe is dark matter. Dark matter is neither ordinary baryonic matter, nor composed of any known particles of the standard model. It does not interact electromagnetically but does interact via gravity that affects various aspects of the structure of the universe. Three complementary methods including direct detection, indirect detection and manmade dark matter in laboratory were applied by astronomers to identify dark matter. Meanwhile, some models such as axion and supersymmetric standard model were proposed to satisfy the existing observations. The nature of dark matter is still a mystery. This paper briefly introduced the background information of discovery of dark matter, and summarized the latest development of dark matter detection in recent years and the model theories of dark matter. It also discussed the current understanding of dark matter and dark energy.
Recultivation of micro-plants of perpetual raspberry after deposition in the culture room conditions on the nutrient media with the use of modifications of the Superstim product in low and ultra-low doses
Authors: Akimova S V , Kirkach V V , Demenko V I , Malevannaya N N
Published: February 2021

In the clonal micro-propagation of raspberry, the aftereffect of micro-plants deposition in the culture room conditions was evaluated when adding Superstim-1 and Superstim-2 products to the nutrient medium in low and ultra-low doses. The advantage of using the Superstim-1 product and planting of regenerant plants for multiplication in a nutrient medium based on Murashige and Skuga inscription enriched with the following substances: (mg/l) thiamine-hydrochloride, pyridoxine-hydrochloride, nicotinamide - 0.5; mesoinosit - 100; glycine - 1000; sucrose - 30000, agar-agar - 6000, 6- benzyl aminopurine in concentrations of 0.25. It is shown that during recultivation after deposition, experimental micro-plants have a propagation coefficient of 3-5 times higher than the control parameters without deposition. The Brilliantovaya variety has the range of active concentrations of the Superstim-1 product from 1 × 10 − 3% to 1 × 10 − 18% (coefficient of multiplication on the first passage is 6.0-8.0 units against 1.5 units under control, on the second passage - 7.6-9.2 units against 2.5 units under control). The Gerakl variety has a range of active concentrations of the Superstim-1 product from 1 × 10 − 3 %…1 × 10 − 12 % (the coefficient of multiplication on the first passage is 10.4-12.4 units against 1.5 units under control, on the second passage - 12.4-14.0 against 2.5 units under control).
Search for antagonists to protect plant raw materials from pathogens
Authors: Valiullin L R , Titova V Y , Skvortsov E V , Muhammadiev R S , Validov S Z , Rud V Y , Davydov V.V. , Glinushkin A P
Published: February 2021

The paper presents the results of research on the selection of biological agents with antagonism to microorganisms affecting raw materials of plant origin. The antagonists selected at the first stage showed significant changes in the antagonistic activity of various isolates when the temperature of the medium increased to 450C. There was no decrease in activity in isolate 20, so it is resistant to high temperature. Isolate No.21 had a significant increase in antagonistic activity, it is likely to be more resistant to high temperatures and some biochemical enzymatic processes are stimulated, leading to increased antagonistic properties. And in isolates 9, 16 and 23, on the contrary, it was lowered, possibly due to the fact that the increased temperature causes structural and biochemical changes in the cell of the microorganism. Similarly, isolated isolates No.9, 16, 23, 21, and 15 had high antagonistic activity against micromycetes that contaminate plant-based feed.
Population and Genetic monitoring the Puccinia triticina to provide food safety of Russia
Authors: Kolomiets T M , Zhemchuzhina A I , Kiseleva M I , Zhemchuzhina N S
Published: February 2021

For determine the virulence of P. triticina populations in 7 regions of Russia there were tested 564 isolates on 49 wheat lines possessed juvenile resistance to the pathogen. There were identified from 37 to 42 virulence genes in fungus populations from different regions. The similarities of P. triticina populations were found in the presence of virulence genes p1, p2c, p3a, p3bg, p3ka, p10, p14a, p14b, p17, p18, p21, p27+31, p30, p32, p33, p39, p40, pB, p22a and in the absence of genes p24, p29, p41, p42, p45, p47, p51, p53. The differences were recorded by the frequency of individual virulence genes in fungus populations, for example the genes p2a, p29, p38 weren’t identified in Middle Volga region, p22a – in Low Volga, p19, p28, p22a, p38 – in Volga-Vyatka , p36, p44 - in West Siberian.

Leaf rust resistance genes were classified into 5 groups according to the degree of effectiveness. The resistance genes: Lr24, Lr29, Lr41, Lr42, Lr45, Lr47, Lr51, and Lr53 were assigned to the effective group, since the corresponding wheat lines were not affected by any of the studied P. triticina populations. Wheat lines or varieties with identical resistance genes can be recommended to breeders as sources of resistance against leaf rust.
Scientific and practical basis of rapeseed production in the Central Federal district
Authors: Volovik V T , Shpakov A S
Published: February 2021

The Central Federal district has soil and climate resources, scientific and industrial experience that allows it to produce basic types of food in full from the need. The main task at the present stage is to increase the production of dairy and meat products of cattle by increasing the gross production of feed and improving their quality, especially in terms of protein availability. Cold-resistant oilseeds, and above all, rapeseed, should play a leading role in solving the problem of providing protein for feed. In relation to the region, the scientific and practical bases of rapeseed production have been developed to meet the needs of the fat-and-oil industry and animal husbandry in rapeseed oil seeds. A range of varieties of spring and winter oilseed rape, spring and winter colza different ripening, allowing to obtain raw materials for masloekstraktsionnyh plants from early July to late September. The varieties of spring rapeseed with a potential seed productivity of up to 3.5 t/ha created in the Federal Research Center “VIC named after V. R. Williams” provide up to 1.5 t / ha of edible oil and 0.7 t / ha of raw protein. Winter rapeseed varieties have a potential productivity of 6 t / ha, in production conditions they guarantee 4-5 t/ha, which allows you to get more than 2 t / ha of oil and more than 1 t / ha of raw protein. Created varieties of colza, distinguishing itself with reduced fiber content and increased digestibility, can be successfully used in the poultry industry.
Indicators of the state of forage ecosystems arid and semi-arid territories of Siberia and Kazakhstan
Authors: Trofimov I A , Kosolapov V M , Trofimova L S , Yakovleva E P , Teberdiev D M , Koshen B
Published: February 2021

Science-based management of forage ecosystems of arid and semi-arid territories and the fight against their degradation, carried out on the basis of systematic monitoring, assessment and accounting of their state and dynamics, are becoming actual state problems in Russia and Kazakhstan. As a result of studying, evaluating and agro-landscape-ecological zoning of territories of Siberia and Kazakhstan, creating databases of land resources and natural forage lands, using literary and stock data, the authors developed indicators of the state of forage ecosystems of arid and semi-arid territories. One of the most important ways to improve the effectiveness of assessments of the state and dynamics of degradation of forage ecosystems, as well as the most accurate diagnosis of negative processes is to solve the problem of creating and using a system of geobotanical and soil indicators of degradation of forage ecosystems. The full assessment of the state and development of the process of degradation of forage ecosystems can only be provided by using the entire system of indicators compiled on the basis of a combination of a number of main indicators of forage ecosystems. Geobotanical indicators of forage ecosystems include the following main indicators: change of plant communities, degradation of pastures, projective cover of indigenous and ruderal vegetation, productivity of natural pastures, etc. Soil indicators include: the area of allotments disturbed by erosion, the degree of destruction of surface soil horizons by erosion, the intensity of erosion, etc.
Cereal viruses – brome mosaic virus: prevalence and diagnostics
Authors: Zvyaginceva D D , Beloshapkina O O , Lopatkin A A , Shneider Y A , Morozova O N
Published: February 2021

Analysis of the prevalence and bioecological characteristics of the brome mosaic virus (BMV), which is a widespread polyphage virus that causes significant economic damage to cereals. Experimental studies were carried out in the laboratory of the All-Russian Science-Research Institute of plant Quarantine (Moscow region), visual examinations of crops and sampling of winter wheat in the tillering phase were carried out in the farms of the Rostov region, the Chechen Republic, in the Moscow region (Russian State Agrarian University -Moscow Timiryazev Agricultural Academy) in 2019- 2020. Route surveys of fields in each region were carried out in the spring. The visually estimated prevalence of viroses on average did not exceed 0.5%. The detection and identification of the brome mosaic virus in plants with symptoms of mosaic and mottling was carried out by the method of classical PCR with visualization of the results by gel electrophoresis. Brome mosaic virus was detected by RT-PCR in winter wheat samples from the Rostov region. No brome mosaic virus was detected in winter wheat plants from the Chechen Republic, Moscow region, although the leaves showed virus-like symptoms.
Screening of various chemical additives, including S-containing complexion to enhance phytoextraction of mercury by white creeping clover (Trifolium repens L.)
Authors: Makarova A S , Nikulina E A , Tsirulnikova N V , Avdeenkova T S , Pishaeva K V , Glinushkin A.P. , Podkovyrov I.Yu.
Published: February 2021

Annotation

Mercury in the modern world is a global pollutant entering the environment as a result of human activities. Currently, there are a large number of territories in the world whose soils and reservoirs contain mercury in quantities that pose a danger to human health and the environment. However, the methods that are traditionally proposed for remediation may pose a risk of secondary mercury contamination and/or negative health effects for those involved in cleaning. Phytoextraction of heavy metals from the soil environment is currently considered as one of the most promising non-invasive methods of reclamation. However, this approach has limited effectiveness for cleaning soils and reservoirs. Chemically reduced phytoextraction can increase the efficiency of this process both by converting less bioavailable mercury compounds into bioavailable fractions in the soil, and by increasing the rate of metal transfer in plants. The paper presents the results of a screening study of various chemical additives to enhance the phytoextraction of mercury with white creeping clover (Trifolium repens L.). The results obtained showed a good potential for reducing phytoextraction for the first time studied S-containing complexion, in which the monoethanolamine salt of dithiobiacetic acid was used as a sulfur-containing chelant (MEDBA).

The reported study was funded by MUCTR according to the research project No. 3-2020-039.
Innovative ways of suppression of fungal infections of plants:approaches, solutions, outlooks
Authors: Mukovoz P P , Peshkov S A , Levenets T V , Sizentsov A N , Kvitko A B , Glinushkin A P
Published: February 2021

In order to study the possibility of suppressing mycoses with fumigation pyrotechnic compositions, biologically active compositions were developed based on compounds synthesized according to original methods in the organic synthesis laboratory of the Federal State Scientific Institution "All-Russian Research Institute of Phytopathology", synthetic fungicides from the azole group, as well as natural antimycotics from the polyene group obtained by microbial fermentation of Streptomyces bacteria, followed by extraction of supernatants and preparative column chromatography of extracts. Pyrotechnic compositions of fumigation action were developed, including active substances of biologically active compositions (23 … 46%), oxidizer (22…56%), combustible substances (15…56%), flame arresters (14…34%), phlegmatizers (6…20%) and baking powder (4…8%). The stability of complexes of synthesized compounds with putative cellular targets: ergosterol; ergosterol-dependent membrane Na+/K+-ATPases; 14α-demethylases controlling the conversion of lanosterol to ergosterol; and squalene-monooxygenases catalyzing the synthesis of squalene–epoxidase, a lanosterol precursor, was studied using computer modeling methods in the B3LYP/DZP approximation using the ChemCraft and FireFly software package. It was found that the synthesized compounds with nitro groups in the molecule selectively coordinate with the Na+/K+-ATPase membrane enzyme site responsible for phosphorylation and binding to ATP. It is revealed that the nitrogen atom of synthesized benzoxazines selectively coordinates with the iron of Gemma 14α-demethylase, and the binding energy of the complex is significantly lower than the coordination energy of iron with the cysteine residue of the protein matrix of the enzyme. It was fixed that the synthesized compounds at a concentration of 16-500 mcg/ml have fungicidal activity against test cultures Fusauium graminearum, Alternarium alternata, Bipolaris soraciniana, comparable to the activity of comparison drugs phytolavin and previcur. It was fixed that the samples of pyrotechnic charges of fumigation action developed in the laboratory of organic synthesis of the Federal State Scientific Institution VNIIF have fungicidal activity against the phytopathogenic fungi F. graminearum, A. alternata, B. soraciniana with an effective action of 23 … 69% of the test cultures. For wheat affected by the tested crops, the effectiveness of pyrotechnic charges was in the range of 12 … 31% of the death of test crops. It is revealed that the fumigation method of plant mycosis suppression implemented in this work, integrated with modern methods of medical chemistry, organic synthesis and classical methods of chemical treatment, is an effective innovative solution and can be used in the development of food security strategies.
INTEGRATED PROTECTION OF CEREALS AGAINST FUSARIUM SPECIES
Authors: Glinushkin A P , Ovsyankina A V , Kornyukov D A
Published: February 2021

In article, the materials characterizing a condition of grain crops agrocoenosis. The results of long-term investigation of pathogenic cjmplex content of snow mold and root rot agents in different region of Russia were presented. Immunological study stages fo? the development of the grain crops cultivars, resistant and tolerant to Fusarium pathogens.
The ecological situation of the metropolis: introduction from region to region
Authors: Belyakov N V , Glinushkin A P , Stepanenko A A
Published: February 2021

The article is revealed the main stages and results of the project "Plant wealth of Russia: from region to region". The project aim is to develop the environmental competence and the overall environmental culture of students of higher and secondary professional educational organizations, young scientists. The project is focused on the study of the practical application, conservation and protection of plants in the regions of Russia. Each stage of the project is designed to expand the target audience. In the future, the author plans to implement the project in the format of all-Russian festivals in different regions.
Obtaining micro cuttings of potatoes by clonal micropropagation
Authors: Sevostyanova E P , Akimova S V , Sevostyanov MA , Nasakina E O , Korshunov A V , Glinushkin A P
Published: February 2021

At present, high-quality healthy planting material of potato tubers cannot be obtained without the use of clonal micropropagation technology, with the help of which, through micro-cuttings, it is possible to recover from viral, viroid, bacterial and fungal infections and mass propagation of economically valuable varieties. The wrong choice of explants and ineffective sterilization are the most common causes of suppression of the growth of microplants, bacterial infections, necrosis of shoot tips, habituation and growth of tissues, lack of rooting at the stage of rhizogenesis and successful acclimatization at the stage of adaptation to non-sterile conditions, etc.
Application of BIM in Construction Management of Large Commercial Complex
Authors: Liu Zhen
Published: February 2021

This paper introduces the connection between construction management and BIM in large commercial complex projects. Through the technical means of BIM technology in construction site management, working face division, l design, steel structure deepening design, safety management, auxiliary simulation construction vehicle driving route, tower crane whole process management, etc. The purpose of shortening construction period, ensuring quality and quantity, ensuring safety and improving cooperation ability in the whole construction project is realized, and good economic benefit is obtained, and the application effect is remarkable.
Study on Seismic Capacity of Single-story and Brick-concrete Structure Building in a Rural Area of Southern Guangxi
Authors: Chen Shan , Zou Chuanlong , Liang Xiaoguang , Li Mingmao
Published: February 2021

Based on the investigation and analysis of the brick-concrete and single-story houses in a rural area of southern Guangxi, the author established four different overall models of single-story house according to a certain proportion by ABAQUS-a software of finite element analysis, so as to analyze the seismic response of brick-concrete and single-storey buildings in this area under the action of 6-magnitude frequent earthquake. The results show that, under the action of 6-magnitude frequent earthquake, if the single-storey and brick-concrete house is built without reinforced concrete, its wood beam support or column support cannot reduce the stress concentration of the structure obviously;the displacement deviation between the top and the middle of the outer wall can be reduced when the wood beam is used as the support between the inner wall and the outer wall.
Analysis of the Damping Effect of Rubber Damping Layer under Explosive Load
Authors: Yuan Yingjie , Sun Huixiang , Chen Zhuo , Zhang Wentang , Xia Wei
Published: February 2021

In order to study the influence of the thickness of the rubber damping layer on the damping performance of the rock mass arch structure under explosive load, a finite element model was established based on the ANSYS/LS-DYNA dynamic finite element analysis software, and four rubber damping layers with different thicknesses of 0 m, 0.2 m, 0.4 m and 0.6 m are set between the rock mass and the lining. The fluid-solid coupling algorithm is used to compare and analyze the maximum effective stress, peak pressure and peak displacement of the outer lining dome, spandrel and arch foot elements. Numerical simulation results show that the maximum effective stress of the arch, spandrel and arch foot decreases after setting the vibration damping layer, and the arch foot reduces by more than 80%; with the increase of the thickness of the vibration damping layer, the peak pressure of the vault, spandrel and arch foot decreases, and the peak displacement increases. When the thickness exceeds 0.4 m, the damping and anti-blasting effect is not obvious, and the peak displacement tends to be stable; the vault is a strong response part, and reinforcement measures should be taken; comprehensive consideration of economic factors, it is recommended to set a 0.4 m thick damping layer.
Research on the influence of the distance between the ribs of the energy dissipating beam section on the seismic performance of the eccentrically supported frame
Authors: Sun Xuanyi , Wang Xinwu , Fan Lidan , Li Xiaopeng , Li Tong
Published: February 2021

A reciprocating force loading test was performed of a single-layer shear-yield eccentric brace frame specimen, and the finite element model of stiffeners of several energy-dissipating beam segments with different spacing is established. On the basis of verifying the validity of the finite element analysis, a non-linear numerical analysis of its hysteretic performance is performed, and the bearing capacity, initial stiffness, stiffness degradation and energy dissipation capacity of different model structures are analyzed. Studies have shown that appropriately reducing the spacing of the stiffeners in the energy dissipating beam segments can increase the load-bearing capacity, initial stiffness and energy dissipation capacity of the component, but the residual stiffness of the structure can be reduced.
Analysis on dynamic eccentricity effect and torsional performance of steel reinforced concrete frame with special-shaped column
Authors: Hu Zongbo
Published: February 2021

Based on the seismic simulation shaking table test of steel reinforced concrete frame model with special-shaped column, the lateral-torsional vibration response, dynamic eccentricity effect and nonlinear torsion response law of the model structure are studied. The results show that, under the action of three-way earthquake, the Y-direction and X-direction horizontal torsion coupling phenomena occur in the high-order vibration mode of the model structure, and the accidental eccentric torsion has a light influence on the seismic performance of the special-shaped column structure which does not exceed the height limit. The nonlinear torsion analysis shows that the inter-storey displacement angle of the model structure is affected by floor position, eccentricity and ground motion intensity. As the eccentricity and seismic intensity increases, the inter-storey torsion Angle of the model structure increases constantly. In case the relative eccentricity is less than or equal to 0.5 and the peak acceleration is less than or equal to 0.62g, then the amplitude of the inter-storey torsion Angle of the model increases slightly; In case the relative eccentricity is more than 0.5, then the lateral-torsional coupled effect of earthquake response of the structure is obvious, and the influence of eccentricity on torsion effect of the model structure is more obvious. The results show that steel reinforced concrete frame with special-shaped column has good ductility and torsion resistance.
Study on performance-based seismic design theory
Authors: Wang Yujie
Published: February 2021

There are many other names for performance-based design, such as “performance based”, “performance evaluation”, “performance explicit standards” and “performance-based standards”. The so-called “performance-based” refers to the performance specified in the specification or the performance proposed in the specification. When designing the design method, the specification only specifies the target performance, and leaves the checking method to the designer. In other words, performance-based design is a technology to set reliable performance goals and achieve them through reasonable structural analysis methods.
Study on low temperature performance of recycled concrete
Authors: Guan Hongjie , Tian Jing , Wang Qun
Published: February 2021

Recycled concrete is a product of the recycling of building materials. It has the characteristics of low cost and large demand, and its application in engineering is gradually expanding. However, there are still many unclear problems in the performance of recycled concrete in cold regions. In order to solve this problem, this paper puts forward the performance research of recycled concrete under low temperature condition, and designs the recycled concrete low temperature structure model through the ratio of recycled concrete materials and experimental construction. According to its indexes, the changes of its cryogenic antifreeze performance, compressive strength, stiffness stability and other aspects are compared and analyzed. The comparative experimental results show that when the air content of recycled concrete is gradually reduced, the insulation effect is reduced, the strength of recycled concrete is reduced, the frost resistance is also reduced, the durability and stability is poor, and the frost resistance is poor. With the continuous increase of displacement and load seismic force, the crack of recycled concrete gradually changes, the stiffness decreases faster, the stiffness degrades to a greater extent, and the low temperature seismic performance is poor.
Statistical Analysis of the Influence of Temperature and Humidity on the Stability of Geomembrane Mechanical Test
Authors: Zheng Airong
Published: February 2021

Using mathematical statistics, we analyzed the influence of temperature and relative humidity during test on the results. The test data of geomembrane were obtained by changing the temperature and relative humidity ranging from 18°C to 25°C and from 50% to 70% respectively. The results show that under different temperature and humidity, the coefficient of variation of the maximum tensile test value is 8.0%∼17.4%, and the coefficient of variation of average value is 6.7%, which is poor in stability; the coefficient of variation of the test value of elongation at break is 4.7% ∼ 11.7%, and the coefficient of variation of average value is 4.6%, and the value increases with increasing temperature; the coefficient of variation of right angle tear strength is 6.0% ∼ 20.7%, and the coefficient of variation of average value is 6.4%; the coefficient of variation of puncture strength test value is 4.2% ∼ 7.3%, and the coefficient of variation of average value is 6.1%, and the value decreases with the increase of temperature. These results will shed light on analyzing the influence of temperature and humidity on the mechanical test results of geomembrane and determining a reasonable temperature and humidity control range for geomembrane testing.
The Balance Mechanism of Project Cost Audit Based on Game Theory
Authors: Zhou Hanbin , Nie Chunlong
Published: February 2021

As the last step of the project cost review, auditing plays a vital role in the entire project. It can not only make the project cost more accurate, but also bring some economic indicators to the entire construction industry. This article uses the game method to take the auditor as The center analyzes the pros and cons of the auditors and the reviewers during the audit, and proposes a series of balancing mechanisms based on the pros and cons of each party to alleviate the contradictions between the two parties. This article also analyzes the psychology of the game between the auditors and the leadership. It is hoped that various management and control will make the development of the engineering audit industry more stable.
Modifying Single-Cylinder Diesel Engine Become Dual-fuel System to Reduce NOx Emission and Maintain Fuel Efficiency
Authors: Santoso A. , Semin  , Sampurno B. , Cahyono B.
Published: February 2021

Tier III of Annex VI from MARPOL 73/78 about NOx emission control soon may be implemented at a global level. There are three potential methods to fulfill the Tier III. First is derating power, second is using gas as fuel, and the third one is installing SCR. This research deals with using CNG as diesel engine fuel. This initial study was occupied a single-cylinder diesel engine. Gas cannot burn inside conventional diesel cycles. Dual fuel technology also tends to reduce fuel efficiency compared with the conventional one. Therefore, the single-cylinder engine was modified its piston crown part to overcome both problems. The modification of piston crown geometry affects the engine compression ratio. Modify the conventional diesel engine to become the dual-fuel type is concluded as a potential technique to be developed. The study results show NOx reduction up to 33.68% and the fuel efficiency increase up to 1.512% without any disruption to the engine operating conditions.
Extending the Capability of Vessel Integrated Automation System for Damaged Control Flooding System in 80 Meter Offshore Patrol Vessel
Authors: Saihilmi M.I. , Santoso A. , Kusuma I.R.
Published: February 2021

Indonesia is an archipelago country that owns thousands of islands. The worthy treasures must be protected properly from any maritime disruption such as foreign invasion, pirate, hijack, terrorist, illegal fishing, illegal logging, etc. The internal ship also needs to be protected from any disaster at sea caused by natural and enemy. There is a high demand for many numbers of modern OPVs that have the capability of a warship in terms of safety and security system. One of the features is the DCFS (Damage Control Flooding System). The system assures that the ship could intact from hull damages on any recoverable scale. In this research, DCFS was built for working automatically under the integration of the installed VIAS (Vessel Integrated Automation System). A sub-program was developed so that the DCFS capable of automatically switch on/off all ship alarms and sensors systems, fire and bilge pumps systems, even main engine and auxiliary engine when the emergency call situation declared. Integrated DCFS under ship automation system will work faster than any human response to the sources of disaster can be detected and override much earlier. All integrated DCFS can be monitored in a progressive LCD multi-screen by interactive windows and menus as the results of this research.
Human Error Assessment of Situation Awareness in Bridge Operations: A Case Study of Indonesian Maritime Accidents
Authors: Bowo L. P. , Prilana R. E. , Furusho M.
Published: February 2021

In the maritime industry, the role of human on-board operations is frequently cited in accidents report due to its relation to human error. Furthermore, according to the European Maritime Safety Agency, human error in bridge operations in the 2018 maritime accident cases due to lack of situational awareness has affected 65%. This study aims to assess the Indonesian maritime accidents concerning situational awareness in bridge operation in the collision, grounding, and sinking accidents by applying the new propose HRA method, Maritime Accidents Analysis and Reduction Technique (MAART). Finally, the forty-seven maritime accident data derived from the National Transportation and Safety Committee of Indonesia from 2008 to 2018 are assessed. In conclusion, Indonesian seafarers’ situational awareness has to be given more concern because most of the analyzed accidents’ causal factors show a lack of continuous monitoring, communication, and coordination on-board operation.
A Hybrid Methodology for Human Reliability Assessment in Maritime Cargo Accidents
Authors: Prilana R E , Bowo L P , Furusho M
Published: February 2021

The maritime cargo shipment is always looking for implementing new safety measures to reduce the cargo accident rates. However, it is challenging to find the root cause that led to a specific cargo accident. The accidents result from a complex chain of events, where there is usually more than one factor solely responsible for maritime cargo accidents. The present contribution aims to find the causal factor of the accidents and predict human error probability after the accidents using the hybrid methodology. The hybrid methodology that uses this study to assess human error of maritime cargo accidents is Human Error Assessment and Reduction Technique (HEART) – 4M and TOPSIS with Technique for Risk Perception. The HEART methodology assumes that any predicted reliability of task performance may be modified according to the presence of identified Error Promoting Conditions (EPCs). A technique for Risk Perception decomposes a task into sub-task steps for which quantification data are provided. The corresponding results show that the most common situation that maritime cargo accidents occurred due to the man factor is during the loading and unloading process.
Analysis of Power Requirements and Turning Circle of Amphibi Coach
Authors: Moganti V D , Garetno R E , Irvana R , Fadillah A
Published: February 2021

This research is a continuation of the previous one. It is an analysis to find the power requirements and turning circle of Amphibi Coach. In this analysis, the method used for calculating the propulsion power when in water uses the KR-Barge calculation method. In turning circle analysis using the Hovgaard method, this method is a simple method for estimating turning circle without field testing. The standard used for turning circles refers to the standard Resolution MSC 137 (76) (adopted on 4 December 2002) Standards For Ship Maneuverability. From the calculation of the driving power, the driving power needed when the Amphibi Coach is in the water is 126.99 HP while the Amphibi Coach driving power when on the ground is 420 HP. The final propulsion is determined based on the greatest propulsion, which is 420 HP. The results of the Amphibi Coach turning circle analysis showed that the Amphibi Coach turning circle without Fin Stabilizer was 25.96 m and had a tactical diameter of 51.92 m. For Amphibi Coach turning circle with Fin Stabilizer of 26.34 m and has a tactical diameter of 52.69 m. Amphibi Coach turning circle analysis using the approach formula shows that the results obtained have met the applicable criteria.
Automated door with face recognition: using artificial neural network approach
Authors: Bashir A , Tahir N M , Zimit A Y , Bature U I , Abubakar K A , Nasir A Y
Published: February 2021

The implementation of an accurate face recognition system in a hardware device is a very important aspect of various security applications. In a security system, any type of password is used to access private and confidential data, some are hard to remember and can be stolen or guessed, misplaced, forgotten, purloined or duplicated, or become corrupted and unreadable. While there have been significant improvements in the algorithms with increasing recognition accuracy, only a few types of research were conducted on implementing these face recognitions in hardware devices. Door access control systems based on face recognition is geared towards simplifying much-difficult face recognition problems in uncontrolled environments. This report comprised mainly of three sub-phases: face detection, face recognition, and automatic door access control. The face is detected by using the Viola-Jones method and face recognition is implemented by using the Principal Component Analysis (PCA). If a face is recognized, it is known, else it is unknown. The door will open automatically for the known person due to the command of the microcontroller (Atmega328P) received from the MATLAB program. On the other hand, the alarm will ring for an unknown person.
Resistance Analysis of Rescue Boat in Calm Water Condition
Authors: Utama I K A P , Sutiyo  , Suastika I K , Sulisetyono A , Hasanudin  , Hermawan Y A , Aryawan W D
Published: February 2021

Search and rescue operations, especially in ship accidents, require speed and reliability from the rescue vessels in facing the challenges of extreme weather and sea waves. A rescue boat hydrodynamic performance study is very important to be carried out in order to determine the ship’s ability to withstand dangerous conditions while in operation. A combination of using Maxsurf and CFD method are implemented to estimate the resistance of 3 (three) selected designs of crew boat, which demonstrated a good agreement between the two techniques. Selection of the final design also uses seakeeping criteria, i.e. having lower pitching and rolling responses. The final model is further tested in a towing tank belongs to the Institut Teknologi Sepuluh Nopember (ITS) and agrees well with Maxsurf and CFD calculation.
Infobot: An Autonomous System for Offline Shopping
Authors: Balaji A , Ragunathan R , Rithic Sai R , Nithya V
Published: February 2021

Transfiguring the customer expectation requires a ubiquitous range of precision and speed that conventional approaches can’t meet in real time. Recent technological progress in robotics has resulted in developing information bot which can interact with customers and made products feasible to commoditize. The source of information is the wealthiest thing in the world. As a human being everyone will tend to seek information from various sources. The source of information before a certain period of time were only books but now it has experienced a drastic growth. The proposed project facilitates the role of guide robot to locomote from unit to unit in the shopping mall. In most of the shopping malls and organizations, there is no provision to provide information about certain products that are available in the shopping mall itself. It becomes a tedious process to search for a product in the mall. To overcome the situation, people tend to move for online shopping. In online shopping, there will be lot of disappointment like product misplacement, product damage, product with low quality etc., while purchasing the products. To solve this problem a mini bot is introduced in this project that would provide information about the products. The same concept if introduced in organizations it will be quite easier to collect the information about any person or department. The motivation of the project is to design a movable bot which provides the information in all aspects based on user interaction. Thus, the project elicits a wireless operating bot with fast track product navigation in a continual zealous of incumbent based on direct customer choice.
IoT Based Well-organized Hostel Power Consumption and Attendance Administration System
Authors: Geetha V , Anbumani V , Selvi T , Sindhuja C S , Vanathi S
Published: February 2021

Most of the educational institutions in India are with the conservative follows for monitoring their resources precisely hostel facilities. In this project, two major issues namely energy conservation and monitoring of hostel attendance are considered. Now a days the power consumption by the educational institutions is more than 2 billion units as per the survey held in 2015. Energy demand is one of the increasing burdens for government and it is increasing exponentially in the recent scenario. Energy conservation can be the greatest key for rising energy demand. In this regard, power saving is a vital matter and it is more serious in hostels as some irresponsible students who leave the room without switching OFF the lights and fans. Another issue with today’s hostel maintenance is student’s attendance and their in/out time. Conventional system follows camera facilities. But many miserable incidents have happened to the students especially girls when they had a long travel to their hometown. Hence by means of well-organized hostel administration system with RFID reader, fingerprint sensor, PIR sensor is designed to work under two modes namely Manual Mode and Automatic Mode and provides solution for these two issues.
3D Printing Concrete: A Review
Authors: Krishnaraja A.R. , Guru K.V.
Published: February 2021

3D Printing concrete is new developed technology with no reinforcement or by providing reinforcement as like cable in the year 1987. The printing concrete is printed with the printer in different shapes and sizes. Size of aggregate used is very minimum which passes through the nozzle of printer. The strength of 3DPC is tested by compression, flexural, tensile, shear tests for identifying durability, extrudability, workability of printing concrete. The slump flow is carried for finding the flowability of concrete that passes through the nozzle of the printer. Fibers such as polypropylene, PVA, GGBS, Steel were used in addition of mix to increase the strength of 3DPC. Superplasticizers, Fly ash Silica fume, Geopolymer are used in concrete with percentage addition into the mix for raising the strength of the printing concrete. Result shows the strength of PC in different mix proportions along with varring size of specimens. Pumpabality and Buildability of printing concrete is analysed by slump flow test. Reinforcement for this concrete is provided as in form of cables that passes freely through nozzle for printing the concrete.