bluuebunny/crossref_metadata_2025 huggingface dataset:
A Fast and Accurate Face Recognition Security System
Authors: Sruthi M S , Sarath S , Sathish R , Shanthosh S
Published: May 2021

Using facial recognition technology, provide the best security system with alerts for smart devices such as laptops and PCs. The design descriptions of the various modules involved in automatic face recognition are presented in this paper: face detection, face identification, and face verification. Also we’re visiting further process the image captured by CV to test whether the person is allowed or unauthorized to access the laptop or PC using openCV and native Binary Pattern Histogram (BPH) Algorithm. The LBPH algorithm is also a simple solution to the problem of face recognition, since it can identify both the front and side faces. A updated LBPH algorithm assisted pixel neighbourhood grey median (MLBPH) is proposed to solve this problem. After detection, the image is verified and allows only the user to access the laptop or PC if he/she’s authorized. And if not, an e-mail or message is pushed to the respective person to alert that somebody else is using his/her laptop by enhance the privacy.
Pollution Based Traffic Control System using IoT
Authors: Jaishankar B , bharathi M Dhivya , Harshavarthini G , Bharanidharan S , Harish S
Published: May 2021

With the rise in vehicle use, the amount of emissions at road intersections has raised, causing harm to those who are connected directly to it. It is proposed to control emissions using the Internet of Things (IoT) over stoplights, the ventilation levels of vehicles, and also the consistency of living air. The Internet of Things (IoT) carries out signals. A sensing element and a temperature probe are used in this prototype system. Carbon dioxide, greenhouse gases, and other toxic gases are identified by a sensor. In the air, carbon dioxide, dust, acid, and moisture are present. This analysis is accurate, distributed to the microcontroller on a daily basis and published to the web browser. The Wi-Fi module is a piece of hardware that allows to connect to the internet. On this basis the ON/OFF road markings modify the timing thresholds automatically. At traffic lights, this suggested technique degree of control emissions and climate.
Design of Digitally Controlled Battery Charging System Using DC-DC Converter
Authors: Saravanan S , Kumar R Senthil , Darshini K , Apurva G , Akassnidi K , Abhinayah R S
Published: May 2021

This initiative proposes a new battery charging device. The fundamental concept is to keep this project up-to-date by restricting charge time. The new constant loading technique is proposed and it has a digitally operated loader. Also, the adapter transfers control mode to continuous voltage charging with the battery voltage increasing to the default voltage mark. For battery charging applications, a digitally controlled charger is developed and introduced. A digitally controlled charger for battery charging applications is developed and introduced. The operation of the loader is subject to the proposed software control system. The closed-loop PID control also guarantees optimum electricity voltage. Three stages are used with the digitally controlled charger. The first step is to change the electric volume of 50 Hz to the DC volume with an appropriate power factor. The second phase is the DC-DC fly-back converter, changing the battery to its level and generating galvanic insulation. Step 3 uses digital power to keep the current and voltage stable. The project’s key aim is to maintain a steady voltage and current. The simulation is performed using Simulink with the MATLAB file Experimental findings show design and execution efficiency.
IoT Based Smart Fertilizer Management System
Authors: Jagadesh T , Sangeetha K , Sarvinprabhu R , Jagadesh R , Varshinee D
Published: May 2021

Agriculture is the backbone of the India and villages are the life lines for the growth of India. In our country, over 72% of individuals rely on cultivating which is 33% of the populace puts resources into cultivating. In this manner, the difficulties and issues concerning horticulture should be engaged to frustrate the nation development. The only one solution recommended to this issue is modernizing agriculture using smart technologies. In agriculture, irrigation and fertilizer supply are the two important processes which support crop production. The Conventional water system techniques include a ton of time and exertion in cultivating. A Sensor-based computerized water system framework with manure tank gives a promising answer for oversee rural action. This exploration article gives an immense report on the water system framework and in savvy horticulture.
Predicting heart disease using hybrid machine learning model
Authors: Renugadevi G , Asha Priya G , Dhivyaa Sankari B , Gowthamani R
Published: May 2021

Multiple Chronic disease are available especially Heart disease is the foremost reasons of death in modern world. Machine learning (ML) is useful for making conclusions and predictions based on a huge volume of data formed by the healthcare industry. The proposed approach uses machine learning techniques to find heart disease in this study. The prediction model, which employs classification techniques, is based on the Cleveland heart dataset. The Random Forest and Decision Tree machine learning techniques are used. This model for heart ailment with hybrid methodology has an accuracy level of 88.7%, according to experimental study. The boundary is determined as an input parameter from the user to predict heart disease using a Decision Tree method and Random Forest hybrid methodology.
Design and analysis of half-mode SIW antenna for home automation in IoT
Authors: Cowsigan S P , Renuka K , Shobika K , Swathi S
Published: May 2021

Substrate Integrated Waveguide (SIW) technology implemented antenna for home automation in IoT is presented in this paper. SIW exhibits a low copper loss, reduce surface waves, low radiation loss and low dielectric loss property. In this paper the rectangular waveguide has been designed, simulated, and fabricated to operate in 5 – 15 GHz frequency range. The important performance characteristics of antenna are simulated and measured. The rectangular waveguide has two parallel metallic cylinders consisting of via holes in which we can prevent the entering of unwanted radiations.
Six by Two Degrees of Wikipedia using BFS Algorithm
Authors: Jitendran K , Akash S , Aswin N , Rajesh Kumar T
Published: May 2021

SixbyTwo Degrees of Wikipedia is a concept that is built on the idea of Six Degrees of Separation, where articles can be connected within six steps. This theory motivated the invention of online communities, after succeeding in the real world. The above concept has been visualized for connecting two Wikipedia articles with a minimum number of articles connecting them, by using a modified BFS algorithm. This paper is helpful for students and researchers, for their research. The graph approach formulates the theory and evaluates the minimum number of links between any two given articles. This approach provides much faster results than other algorithms and the traditional BFS algorithm.
A Shape Optimization Technique for Medical Images
Authors: Viswanath M. , Seetharaman R. , Mani Lakshmanan H. , Anandan K.
Published: May 2021

Segmentation and restoration are among the primary objectives in the field of medical image processing. Among many methods available today, derivative method specifically domain based derivative method helps immensely in this field of medical imaging. There was a time-based improvement in the aspects of establishing results in a medical image with the aid of topological derivative. Advantage of this method lies in establishing a link between that of the perturbed domain and that of the original domain and solving for the required metrics in the problem. Treating the original domain as the original image and the diseased image to be the perturbed domain, topological derivative helps to solve the problem. Asymptotic analysis also helps in handling both large and small amount of data based on the big-O notation and small-o notation. It also establishes the supremacy of topological derived image metrics to that of other metrics. Here attempts are made for solving problems in medical images with the help of topological derivative method by adapting minimization procedure. Also, the end results are arrived in an outstanding way with help of the receiver operating characteristic curve.
Do more chargers mean more electric cars?
Authors: Sommer Stephan , Vance Colin
Published: May 2021

To reverse the trend of rising CO2 emissions in the European Union’s (EU) transportation sector, several European governments have introduced programs that promote electric vehicles (EVs). One frequently cited impediment to their uptake is insufficient charging infrastructure. Drawing on panel data from Germany, this paper estimates the relationship between public charging infrastructure and the uptake of EVs. We specify models with fixed effects and instrumental variables to gauge the robustness of our findings in the face of alternative channels through which endogeneity bias may emerge. We find that charging infrastructure has a statistically significant and positive impact on EV uptake, with the magnitude of the estimate increasing with population density. The evidence further suggests that although the incidence of charging points in Germany far exceeds the EU’s recommended minimum ratio of one point to ten EVs, inadequate infrastructure coverage remains a binding constraint on EV uptake. We use the model estimates to illustrate the relative cost effectiveness of normal and fast chargers by region, which supports a geographically differentiated targeting of subsidies for charging infrastructure.
Pervious Pavements For Storm Water Control
Authors: Busari Ayobami A. , Adeboje Adeyemi , Modupe Abayomi E. , Fadugba Olaolu G , Loto Roland , Adeyanju Emmanuel
Published: May 2021

Pervious pavement is a special type of pavement with a high porosity used to reduce surface runoff and to recharge underground aquifer. It could also be used to trap solids and keep pollutants from contaminating the water stream. This review of literature examines existing studies methodologies, technologies, advantages and drawbacks on the use of pervious pavement for stormwater control and aquifer recharge. The result of the review revealed that cement content, water-cement ratio and compaction level affect the mechanical strength of pervious concrete in rigid pavement construction. Due to the complex nature pervious properties of this concrete. Pervious concrete requires stricter quality control of the concrete mixture proportioning as compared with the conventional concrete as there are no standard specification for testing. Surface sweeping method of pore-clogging removal was ineffective in the improvement of the hydraulic conductivity of pervious pavements, as it can only help in the removal of surface debris and not sediments removal from deep voids. The development of this pavement is a positive way forward for stormwater management and aquifer recharge. It is a viable technology in the reduction of stormwater runoff and the concentration of pollutants.
Heavy Metal Contamination In Kotopanjang Dam, Indonesia
Authors: Budijono  , Hasbi M
Published: May 2021

Heavy metal contamination has been reported in commercial fish in the Kampar River as the source of water for the Koto Panjang Reservoir. Heavy metal investigations (Pb, Cd, Zn) in water, sediment and their accumulation were carried out on 6 important commercial fish species, namely Cyprinus carpio, Oreochromis niloticus, Osphronemus gouramy, Hemibagrus nemurus, Channa micropeltes, Barbonymus schwanefeldii). Such accumulation is observed in gill, kidney and muscle tissue. The results showed that the Zn concentration was the highest in water and sediment, followed by Pb and Cd. Similar heavy metal sequence concentrations were found to be accumulated in all the analyzed tissues by means of an accumulation pattern in the kidney, followed by gills and muscle in all fish species. Metal concentrations in the muscles of all fish species meet limits for human consumption.
Changes in Floristic Composition of Meadow Phytocenoses on the Anthropogenically Eroded Slope
Authors: Smelova S S , Zverkov M S
Published: May 2021

It is noted that the solution of geoecological problems largely depends on the availability of reliable and comprehensive information about the state of the geosystem and its development trends. The paper presents ecological-dynamic series reflecting changes in the floristic composition of meadow phytocenoses on the anthropogenically eroded slope under conditions of a developing landslide in 2000–2019. The data obtained make it possible to assess the degree of disturbance of the geosystem and can be used to plan economic and environmental protection measures. The article notes to reduce the anthropogenic load on such easily vulnerable biogeosystems as floodplain meadows located on a landslide slope near the built-up area, first of all it is necessary to identify the boundaries of the water protection zone and the coastal protective zone in the site of landslide process, to provide soil consolidation and to restore the vegetation cover, to organize groundwater discharge points on slope, to catch and to organize and surface runoff treatment. It is important to carry out engineering measures for monitoring the landslide development in order to prevent the adverse consequences.
The Potential Role of Transposable Elements as Molecular Markers
Authors: Arvas Y. E. , Abed M. M. , Zaki Q. A. , Kocaçalışkan İ. , Haji E. K.
Published: May 2021

Molecular markers emerged as very important biotechnological tools in plant biotechnology. Molecular markers represent any gene region or DNA fragment related to the gene region in the genome. Numerous molecular marker techniques have been developed especially after the discovery of the Polymerase Chain Reaction. In agricultural biotechnology studies; they are used effectively in many areas such as physical mapping, gene discovery, labeling and genetic diversity with molecular marker technologies. Transposons can also be used as genetic markers because they cause insertional polymorphism. Transposons are DNA sequences that displace within the genome, causing permanent mutations and responsible for genome size changes. With the development of technologies, new techniques and the completion of genome studies in many species, transposon has been observed that it is found in almost every living species and a large part of the genome of many species consists of transposons. Plants are the living things with the highest percentage of transposons. Transposons are grouped as DNA transposons and retrotransposons according to their working principles. Studies are conducted to determine the relationship between retrotransposon markers and species. For this purpose, many marker methods have been developed; based on IRAP and REMAP retrotransposon insertion polymorphisms.
Molecular Detection of the Gene (Glutathione S-Transferase Zeta Class-Like) Responsible for Stress Tolerance and Studying Its Genetic Expression in a Number of Snake Melon Cultivars
Authors: Abd A. M. , Abdulla A. A. , Al Khazraji H. A. K.
Published: May 2021

The experiment was conducted in the winter agricultural season 2020 in the greenhouses of the Al-Fares Company in Al-Zubair district, with the aim of investigating one of the important genes responsible for tolerating Armenian cucumber for stress conditions, which is the gene (glutathione S-transferase zeta class-like) in 21 Armenian cucumber cultivars. Isolation of RNA from leaves after 100 days of cultivation at the saline level 5 dSm−1, as well as a control treatment of 1 dSm−1and studying their gene expression using RT-qPCR (Real Time-quantitative Polymerase Chain Reaction) technique. The results showed the excelled of the cultivars under the influence of salt stress, Egypt, Babylon, Mosul (Carmelis), Kirkuk, Diyala and Karbala, as they gave the highest expression of their gene expression (25.12, 21.87, 19.04, 21.87, 19.04 and 20.40), respectively, so they can be considered salt-tolerant cultivars. This is because the expression values for the gene (glutathione S-transferase zeta class-like) were high compared to the rest of the cultivars. As for the cultivars whose sensitivity to salinity was confirmed by the experiment, they are Iranian (Ghani), Italian, Baghdad and Amara. These cultivars gave the lowest gene expression values (2.73, 4.46, 4.14 and 3.49), respectively.
Hybrid Vigour, Performance Assessment and Genetic Properties of Some F1 Hybrid Cucumber
Authors: Saeed S. S. , Adday H. A.
Published: May 2021

A trial was conducted during spring of 2015 cucumber in private plastic house belongs to Abu-Ghraib-Baghdad province to assess performance, hybrid vigor and genetic parameters of hybrids Five lines were subjected to diallel cross there after produced genotype were compared on exported hybrid. Results showed that the two hybrids (1×3) and (1×4) were superior in no .of leaves of 60.1 and 58.38 leaves plant1,no .of nodes of 35.51 and 34.79 nodes plant-1 and fruit no 54.31 and 48.00 fruit plant-1, respectively. whereas, the two hybrids (4×1) and (3×1) were superior in internode length of 7.57 and 7.64 cm, respectively. The two hybrids (5×1) and (4×3) achieved highest . T.S.S of 5.13 and 5.06, for each hybrids, respectively. Line 1, 3 and 4 possessed best GCA and SCA there by their hybrids (1×3) and (1×4) gave best average for most properties. Gene action of node number and T.S.S was additive and non-additive. while for internode length and fruit number was non –additive. whereas,for leaves no was additive gene action, Heritability was increase. so, we recommend to exploit these lines to locally reproduce for supplying seeds in our country.
The impacts of treatment with newly developed probiotic versus phaleria macrocarpa leaves extract on the histological features in immunocompromised New Zealand white rabbits
Authors: Saleh I.D. , Zain H. H. M. , Ibrahim H. , Salih N. D. , Gopalan H. K.
Published: May 2021

This research aimed to examine the possible effectiveness of treatment with a freshly formulated new probiotic versus Phaleria macrocarpa leaves extract indicated by the histopathological changes occurred to the colon of the immunocompromised New Zealand White (NZW) rabbits. The study included 40 rabbits, divided into 4 groups. Three of the groups were fed with the immunosuppressive medication (azathioprine, 500 mg/kg/day) to be immunocompromised, Group B was treated with P. macrocarpa extract, Group Ctreated with our developed probiotic, and the group D left untreated as a positive control, Group A regarded as control negative. The duration of immunocompromising drug induction was set as 14 days; and the period of treatment was set for another 14 days. Distinctly, the treated rabbits were showing improvements of healing processes compared to non-treated, where the signs of lack of normal mucous folds, different degrees of mucosal edema and congestion, submucosal hemorrhage, accumulative score of gross colon morphology and major severe lesions of the colon tissue of the non-treated were significantly improved in the probiotic treated, as well as, P. macrocarpa treated groups. As a conclusion, the results indicated that uptake of the formulated probiotic could strengthen rabbits’ immune responses of the immunoco-mpromised rabbits significantly (both the specific and non-specific responses) and retain the weakened colon tissues (caused by the immunosuppressant drug). These findings are recommended to be used in future for development of promising commercial supplements to mitigate the medical risks that comes with immunosuppressant medications currently given to animals or human patients under certain circumstances.
Optimization Design of Polymer Flooding Scheme for Class II Reservoir in Sazhong Development Zone
Authors: Chen Xueying
Published: May 2021

At present, Daqing Oilfield has entered the stage of high water cut, high difficulty and high cost development. The polymer injection blocks of the main oil layers are gradually reduced, and the reserve potential of the oilfield is obviously insufficient, and the potential of stable production replacement is reduced. Therefore, the polymer flooding development of the second type of oil layers has become one of the main ways to replace the production capacity of the oilfield, which is an important guarantee for the sustainable development of the oilfield. The optimization degree of oil displacement scheme for Class II reservoir directly affects the ultimate recovery of polymer flooding. Therefore, according to the development characteristics of Class II reservoir in Block A of Sazhong Development Zone, this paper carries out the optimization design of polymer flooding scheme based on different parameter design methods, laboratory experimental research results and mature experience of other Class II reservoir blocks that have been injected.
Research on the calculation method of the horizontal well reserves in the A oil field
Authors: Mei Zhang
Published: May 2021

The application of horizontal well development is one of the effective methods for the utilization of low permeability reservoir at present. The horizontal well development test in A oil field started from 2002, and it achieved better results. But it is one of the difficulties in the designs that how to find out the development about the horizontal wells. Volume method is the most suitable method for calculating reserves in Z oil field by studying in this paper, so the author prefers Delaunay triangular network method to calculate the single horizontal well control area at first, then considers the key points of reserve calculation, obtains the reserve results of A oil field by applying the reserve calculation software at last.
Practice and Understanding of Improving Recovery Efficiency of Polymer Flooding in Fault Well Area
Authors: Meng Fandong
Published: May 2021

In view of the problems of high development ratio of thin and poor layers and imperfect injection-production relationship in fault-intensive areas, this paper puts forward corresponding comprehensive treatment measures to further tap the reservoir potential and improve polymer flooding recovery.
Research on Oil Layer Protection and Seepage Improvement Capacity Technology in Untabulated Reservoir of Oilfield A
Authors: Song Jinyan
Published: May 2021

On the basis of the experience and practices accumulated in the development of low-permeability untabulated reservoirs in oilfield A, in this paper, oil layer protection and seepage improvement technology of low-permeability untabulated reservoir formed in the well completion process, water injection process and subsequent adjustment process were described, the formation of the above mature technologies has laid the technical foundation for the industrialized development of untabulated reservoir in the oilfield A, and it is of great significance to the effective and efficient development of this type of oil layer.
Analysis on the source of scale-forming ions in water injection wells of No.1 structure in Nanpu Oilfield
Authors: Tian Mingbang , Yan rongkun , Chen Dong
Published: May 2021

In order to define the working in the Nanpu oilfield no. 1 injection Wells into scale ion source structure, introducing the Stiff - Davis, prediction of calcium carbonate scale, combining this method with actual production, the scale formation prediction model is set up, find out critical calcium ions concentration, calculated the critical calcium content. According to the content of nanpu oil field in three-phase water outlet ion data, using linear regression method, set up at different times of calcium ion content change curve, compared with critical calcium ion content, find the fouling ion source. Through research shows that working in the nanpu oilfield no. 1 main scale structure type is calcium carbonate scale, the main scale ion Ca2+ and HCO3-from high pressure well liquid.
Study on Stiffness Characteristics of Driver Airbag Cover under Simulated Finger Pressing
Authors: Zeng Yu , Mo Yan
Published: May 2021

The cover of driver airbag should not only satisfy the performance request of deployment, but also satisfy the sufficient stiffness while pressing on the horn. However, the stiffness of the cover is only evaluated by subjective pressure at present, and there is no quantitative test and data description. Through the subjective pressure evaluation and stiffness test of the driver airbag and other different models of the driver’s airbag cover, the assumption of the stiffness of the cover was obtained, and then the stiffener was used to increase the stiffness of the cover. The subjective press evaluation and the stiffness test were carried out, and the verification hypothesis was established, and the test method of the cover stiffness and the quantitative description method were obtained.
Research on geological structure characteristics of Lubanshan mine field
Authors: Liu Wenwu
Published: May 2021

Mine geological structure is an important geological factor that affects coal mine safety production. Based on detailed underground geological observations and surface geological survey data, starting with the study of structural traces and structural stress field, the Lubanshan mine field’s geological structural characteristics and structural stress field distribution are analyzed. The research results show that the structural profile of the Lubanshan mine field is mainly controlled by the NE-directed Xunsi anticline. The geological structure at the edge of the minefield is more complicated and the internal geological structure is relatively simple. The development of small faults and layer-slip faults, often in groups of coal seams or coal seam roof and floor, has become one of the biggest obstacles restricting coal mine safety production.
Exploration and experimental study on test method of AEPS
Authors: Yang Liang
Published: May 2021

In this paper, based on the analysis of the existing limitations in the application of the existing fire performance test methods of AEPS, an improved scheme is proposed. The cone calorimeter is introduced to obtain the differential fire characteristics of AEPS with different density conditions under different radiation intensity conditions. Through the optimization of the combustion heat test sampling and calculation method, the repeatability and representativeness of the test results are significantly improved and verified by experiments.
Research on the Sealability of Interlayer Based on Numerical Simulation Method
Authors: Li Ke , Li Yao , Zhang Peng , Wang Kai , Pan Yue , Liu Fan
Published: May 2021

Reservoir barriers and interlayers are an indispensable part of revealing the heterogeneity of oil reservoirs. Researching the plugging properties of reservoir barriers is of great significance to the recovery of remaining oil in the middle and late stages of oilfield development and the formulation of oilfield development plans. In this paper, using reservoir numerical simulation technology, based on the three types of reservoirs divided, a numerical simulation model of barrier-intercalation pluggability is established, and the influence of permeability and barrier thickness on the sensitivity of barrier-intercalation pluggability is studied and analyzed. To provide a theoretical basis for the development of remaining oil in the oilfield. Studies have shown that the trend of the permeability of the barrier on the cumulative oil production is mainly “first and then slow”, and the oil production gradually decreases with the increase of the permeability; the thickness of the barrier the impact on the cumulative oil production is mainly manifested in that as the thickness of the barrier increases, the cumulative oil production gradually decreases, and the rate of deceleration changes from abruptly to a slower to stable. The permeability and barrier thickness sensitivity analysis results obtained in this study, It provides a theoretical basis for the further development of the oilfield work area.
Experimental Study on the Performance of Improved Collapsible Loess Mixture with Concrete Crushed Gravel
Authors: Zhen Yao , Liu Bailai
Published: May 2021

Based on the climatic and geological characteristics of the non-weight collapsible loess area, the paper analyses the cooperative working conditions of the concrete surface structure and the non-weight collapsible loess subgrade. The thesis uses coal gangue powder, fly ash, calcium carbide slag powder, and silica fume to modify the permeable concrete, and studies the unconfined compression test after the modification, the load ratio (cbr) test, and the eds-sem scanning electron microscope test. And other physical and mechanical properties. The experimental results prove that the modified soil with 30% calcium carbide slag powder after 28 days of curing has the best compressive performance, but has a heavier industrial peculiar smell; 30% silica fume and 30% silica fume are mixed the compressive performance of the modified soil with coal gangue powder is close; the compressive performance of the modified soil with 30% fly ash is relatively low. Among the four different admixtures in the test, the improved soil mixed with 30% calcium carbide slag powder and 30% concrete gravel has the best compressive effect, and the other three improved soils have similar effects. In the experiment, after four different admixtures were used to improve soil mixing and concrete crushed gravel, the bearing ratio of the modified soil obtained by mixing 30% calcium carbide slag powder and 30% concrete crushed gravel was the best and much higher than that of the other three materials. Scanning through the electron microscope, it was observed that the admixture had a greater effect on the adhesion of the soil foundation and the concrete gravel, which made the soil structure more stable.
Numerical simulation of factors affecting water flooding efficiency
Authors: Liu Lili
Published: May 2021

Numerical simulation method is used to study the influence of reservoir physical properties and development mode on oil displacement efficiency, and the factors affecting oil displacement efficiency are qualitatively described. The core factor affecting oil displacement efficiency is water injection multiple. When the water injection multiple reaches a certain value, the increase of oil displacement efficiency is very small; when the reservoir rock wettability is neutral and weak, the oil displacement efficiency is higher than that of strong water wettability.
Sensitivity Analysis of F Reservoir in M Area
Authors: Gao Yuan
Published: May 2021

The sensitivity analysis of F reservoir in M area is carried out by core laboratory experiment. The experimental results show that F reservoir in this area belongs to medium weak-strong water sensitivity, strong acid sensitivity and medium strong alkali sensitivity, and its speed sensitivity is very weak, and its sensitivity is basically weak-no speed sensitivity. Through laboratory experimental analysis, it provides a basis for rational selection of injection fluid for F reservoir in this area.
Comprehensive Evaluation of Source Rocks Characteristics in Yiliping Area, Qaidam Basin
Authors: Wang Xintong
Published: May 2021

Yiliping area in the middle of Qaidam Basin is a key area for oil and gas exploration in Qinghai Oilfield in recent years. However, the geochemistry characteristics of source rocks in Neogene are relatively vague, which results in the inaccuracy of hydrocarbon resource potential. Based on the seismic interpretation, well logging results, and analytical tests, the comprehensive characteristics of Neogene source rocks in the Yiliping area have been studied. The results show that the distribution of source rocks varies widely. The kerogen type is II2-III. The total organic content is from 0.2% to 1.96%. The vitrinite reflectance (Ro) is from 0.5% to 1.2%, which reflects a mature stage. The content of (S1+S2) varies from 0.01 mg/g to 89.66 mg/g. Through the comprehensive analysis, the Yiliping area is qualified for hydrocarbon generation, but has a fair resource potential. In the future, it can be considered to exploit when the cost of oilfield development is reduced.
New technology of greening waste to make buffer packaging materials
Authors: Yu Longkun , Liu Xue , Yu Xinyuan
Published: May 2021

Developed a new technical solution for making cushioning packaging materials using greening waste as raw materials. Collect greening wastes that have been pruned or fallen off naturally in the city, crushed and sieved, and then alkalized to obtain crude cellulose powder. Through the addition of additives, the foaming is carried out in a microwave manner, and the buffering packaging material is finally made by drying treatment. The material has been verified by the test of cushioning characteristics, has excellent resilience and impact resistance, and is environmentally friendly and degradable. It can replace the non-degradable cushioning materials on the market, such as polystyrene foam (EPS), etc., to reduce environmental pollution.
Multi-Objective Optimized Operation Model Based on Demand Side Grid
Authors: Wang Qingran
Published: May 2021

The multi-objective optimized scheduling model is proposed considering demand side management. The load side resources are divided into nine categories based on three characteristics of fixed, transferable, and user-action loads. The management of transferable load is especially significant based on the example calculation in many regions. In the case of time-of-use price, the multi-objective optimization scheduling method with the objectives of minimizing the total operation cost of demand side energy grid is established. The economic utilization scale is calculated based on the collaborative utilization mode of user side resources and power supply. The numerical tests for the micro-grid indicate that with demand side management consideration, the total cost reduces significantly.
Hazard of heavy metal pollution in farmland soil and its ecological risk assessment method
Authors: Ma Zhaodi
Published: May 2021

The farmland soil heavy metal pollution, not only has a great harm to the crops, and also caused great influence to human life and health. False degree is high, due to the evaluation of traditional ecological assessment method for reliability is poor, so it is necessary to strengthen the farmland soil heavy metal pollution risk assessment method research. This study analyzes the harm of soil heavy metal pollution, and will affect soil environmental toxicity of heavy metal element coefficient to join in the form of weighting ecological assessment, combining with the degree of heavy metal pollution index, potential ecological harm index calculation, and then formulated and pollution level classification standards and the potential ecological harm level compared with complete ecological assessment.
Study on indoor pollutants in the decoration of houses
Authors: Wang Yingchun , Feng Jiao
Published: May 2021

In the decoration of houses, the use of decoration materials will often produce formaldehyde, benzene, ammonia, radon and other harmful substances, so there will be air pollution, water pollution and other pollution problems, seriously affecting the indoor environment, serious harm to human health. To study how the decoration of houses causes serious pollution to the indoor environment. And the main pollutants in the decoration material formaldehyde, benzene, ammonia and radon for specific analysis, to understand the decoration materials in the main pollutants on the indoor environment pollution and damage to human health and life. Through the study, it is found that decoration materials can cause serious pollution. We must pay attention to this, and take certain measures to deal with, to create a low-carbon, green and comfortable living environment.
Analysis of Suzhou’s Ecological Environment Construction Measures Based on Caohu’s Experience and Achievements
Authors: Cheng Xiaorong , Ling Jin , Zhou Feng
Published: May 2021

In recent years, the city’s ecological environment construction and environmental protection work have made good progress. The ecological environment still have many weak links and problems in the construction of ecological environment. This article combines Suzhou’s achievements and experience in ecological environment construction of Caohu Lake, and analyzes Suzhou’s measures and achievements in ecological environment construction and environmental protection. Provide experience reference for the construction of ecological environment in other regions.
Research on screen pipe hole protection technology of large diameter directional long drilling hole
Authors: Zhu Shikui , Sun Dongling , Xu Rui , Zhang Yongjiang , Yuan Benqing , Cao Jianjun , Ren Qihan
Published: May 2021

In order to solve the problems of serious hole collapse and poor gas drainage effect of large diameter directional long borehole in roof under complex geological conditions, based on the gas geological conditions of 32 coal seam in Zouzhuang coal mine, the research on hole protection technology of full hole under large diameter directional long borehole of roof under complex geological conditions was carried out. The construction efficiency was improved by 32%, the drilling hole forming effect was good, and the gas drainage effect reached the expectation.
A Decision Analysis Platform for Energy Big Data Based on Artificial Intelligence
Authors: Wang Yuyan , Huang Shujun
Published: May 2021

With the advent of the knowledge economy era, the application of energy big data has gradually emerged, and smart energy has begun to receive widespread attention. Decision analysis in the energy sector is fundamentally different in frequency, breadth, and complexity compared to the past. Traditional decision analysis techniques cannot meet the increasingly fierce market competition and corporate needs. Applying artificial intelligence technology into the energy field, realizing intelligent analysis and in-depth mining of energy big data, and providing better scientific decision-making have become a problem worthy of in-depth study in the new era. Through the analysis of the development of energy big data, this paper proposes the overall framework of an artificial intelligence-based energy big data analysis platform. We conducted analysis and evaluation from four aspects: data standardization, clustering analysis, classification analysis, and regression analysis. Through the discussion of data types and structures, we put forward a data simulation and evaluation plan, thus providing the energy resources provided in this article. The data decision analysis platform has more advantages in intelligent analysis capabilities.
Transformer Fault Diagnosis Based on Optimized CPSO-BP Neural Network
Authors: Zou Jiyan , Liang Quan , Xu Xiaoming , Wang Qiang
Published: May 2021

Oil chromatographic analysis (DGA) is an important way to transformer fault diagnosis, combining research topics based on I-K-means clustering, t SNE visual clustering in data mining, fault classification number. In order to improve the convergence speed of neural network, an improved back-propagation BP neural network using ADAM gradient optimization algorithm instead of traditional stochastic gradient descent optimization to update the weight of neural network is proposed. Fuzzy C-means clustering and particle swarm optimization are proposed to optimize the initial parameters of neural network. By using 3500 data samples of transformers from a power plant in a city of Liaoning Province to carry out simulation experiments, and comparing the traditional BP network algorithm, CPSO-BP network algorithm and the CPSO-BP network algorithm optimized by Adam, it is proved that the CPSO-BP network optimized by Adam has fast training convergence, strong generalization ability and high accuracy. At the same time, the accuracy, precision, recall and F-1 values were used to evaluate the CPSO-BP network algorithm optimized by ADAM to verify the effectiveness and stability of the algorithm in transformer fault diagnosis.
Research on high instantaneous power droplet generator by using super-hydrophobic electrode
Authors: Yongbo Hu , Nie Dezhi
Published: May 2021

In 2020, a droplet-based electricity generator (DEG) was proposed. Compared with the traditional water drop generator structure, the voltage and current generated by the DEG structure are much higher. In our work, an aluminum electrode with a superhydrophobic surface was prepared by electrodepositing an aluminum substrate in an organic electrolyte. This electrode is applied to the DEG friction generator to optimize the coupling process between the surface water droplets and the DEG structure, which reduces the residual water droplets while maintaining the same level of electrical output characteristics. And the model of the solid-liquid coupling is also discussed.
Influence and Simulation of Pipeline in Floating Wave Power Generation System
Authors: Zhao Shuhao , Li Detang
Published: May 2021

With the gradual decrease of land resources, people pay more and more attention to the development of marine resources, and the use of marine wave energy has become the focus of people. In this paper, the pipeline parameters and pipeline model of the floating power generation device are set up. The comprehensive simulation of the hydraulic system is established by AMESim software. Under the condition of ensuring the normal results of the simulation model, the simulation model is solved by the solver to obtain the pressure fluctuation in the pipeline. The influence of inner diameter and length of pipeline on pressure fluctuation is analyzed. At the same time, through the feedback of pipeline pressure and the actual situation analysis, the feasible suggestions are given, which has certain reference significance for the design of hydraulic pipeline and provides theoretical support for the actual large wave power generation.
Simulation research on hydraulic characteristics of conical X-shaped flaring gate piers in lock chamber based on CLSVOF method
Authors: Xue Yang , Wen Bo , Peng Yu
Published: May 2021

3-D numerical simulation was carried out for flood discharge and energy dissipation process of conical X-shaped flaring gate piers in a hydropower project by using coupled Level Set and VOF method and RNG k-ε turbulent model. The change laws of flow pattern, water surface profile, velocities and pressures distributions in lock chamber of conical X-shaped flaring gate piers were gained. The results of numerical simulation were compared with the model test data and good agreement was found. The numerical results show that, there are differences on both of water surface profiles in lock chamber. With the increase of discharge, water surface profiles falls at the longitudinal axis and vertical diffusion of ski-jump flows are large on the downstream of flaring gate piers.
Application of Clean Energy in Transportation Infrastructure
Authors: Cheng Zilu , Chen Jing
Published: May 2021

It is of great significance to optimize the structure of transportation energy, promote the application of clean energy, and promote the comprehensive realization of new energy and clean transportation infrastructure. This paper describes the development process, application status and practical significance of clean energy in transportation infrastructure at home and abroad. By comparing the application of clean energy in transportation infrastructure at home and abroad and combining with the actual situation, feasible suggestions are put forward, and the future development prospect of clean energy in transportation infrastructure industry is predicted.
Conceptual design and technical requirements analysis of nuclear-powered icebreaker
Authors: Yang Hu , Rao Jianbo , Zhu Chenghua
Published: May 2021

As the Arctic’s strategic position has become increasingly prominent, China’s existing icebreaker fleet has been unable to meet the growing demand for polar affairs such as polar scientific research, Arctic shipping, and polar emergency. From the perspective of route planning, the marine environmental conditions faced by nuclear-powered icebreakers have been sorted out. The research status of domestic nuclear power plant, the selection and design of nuclear power propulsion plant and the main technical requirements were put forward. Finally, the overall plan design was carried out from the aspects of general layout, main dimensions, shaft power, etc., and the main technical requirements for hull design were put forward.
A Study of Factors Influencing Wood Decay and Fungal Activities Based on Mathematical Modelling Methods
Authors: Liu Yuxin , Shi Yinyao
Published: May 2021

This paper establishes a series of mathematical models to describe the wood decay by fungi and important factors affecting fungi activities. First, it is assumed that the external environment will not change; by doing so, a simplified model was established. In continuous time intervals, the model took two situations into account – only single species involved and only multiple species involved. We then used the logistic model to describe the growth rate of fungi. In the situation of multiple species, we also considered competitions between different species. Given the initial area, combined with the relationship between fungal growth rate and decomposition rate, a simplified lignin decomposition model was established. On the basis of this model, a graph of the expansion rate and decomposition rate of different fungi over time was drawn, describing the decay effect of a single fungus and multiple fungi on wood in two different time ranges, short-term and long-term. When multiple species involved, competition between each fugal strain will also be considered. Secondly, considering the complexity of the environment in reality, we include two factors – temperature and moisture – into our model. These two would significantly affect fungi’s activities. Based on the research of Dianel S. Maynard and others, we establish a linear model-The Temperature and Moisture Change Model-to describe the impact of temperature and moisture. We also apply the model in five regions of different climatic characteristics and compare the growth rate and decomposition rate of different fungi to these five regions.
Molecular Docking Analysis Chitosan-Zeolite-ZnO Nanocomposite and Its Potency Against SARS-CoV-2
Authors: Maharani D K , Sanjaya I G M , Amaria A , Anggraeni M A , Jannah L R
Published: May 2021

Nanocomposite has gain great attention in many applications due to its better properties in nanoscale. Chitosan-Zeolite-ZnO nanocomposite were prepared via sol-gel method and were analysed by molecular docking study to predict its antiviral activity against SARS CoV-2. The SARS CoV-2 glycoprotein as receptor from RCSB PDB and complex ligand of Chitosan-Zeolite and ZnO were chosen as interaction model between ligand and receptor. According to free binding energy, it was found that chitosan has better potency in nanocomposite against SARS Cov-2.